diff options
author | Stephen Rothwell <sfr@canb.auug.org.au> | 2011-01-05 11:26:19 +1100 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2011-01-05 11:26:19 +1100 |
commit | b1b70d4e05f4a8b7e3d4464fc3e5fbf73f47d776 (patch) | |
tree | 915ed03b452b452e9ee20eff6c5a19551e434d6e /fs | |
parent | 4d3a04d7a9293a942b476cf152d691a4ec421f2a (diff) | |
parent | 64c2ce8b72eceec4030b04bca32d098b3d1431bb (diff) |
Merge remote branch 'nfs/linux-next'
Diffstat (limited to 'fs')
-rw-r--r-- | fs/lockd/Makefile | 6 | ||||
-rw-r--r-- | fs/lockd/clnt4xdr.c | 605 | ||||
-rw-r--r-- | fs/lockd/clntlock.c | 4 | ||||
-rw-r--r-- | fs/lockd/clntproc.c | 18 | ||||
-rw-r--r-- | fs/lockd/clntxdr.c | 627 | ||||
-rw-r--r-- | fs/lockd/host.c | 409 | ||||
-rw-r--r-- | fs/lockd/mon.c | 110 | ||||
-rw-r--r-- | fs/lockd/svc4proc.c | 20 | ||||
-rw-r--r-- | fs/lockd/svclock.c | 34 | ||||
-rw-r--r-- | fs/lockd/svcproc.c | 28 | ||||
-rw-r--r-- | fs/lockd/xdr.c | 287 | ||||
-rw-r--r-- | fs/lockd/xdr4.c | 255 | ||||
-rw-r--r-- | fs/nfs/dir.c | 28 | ||||
-rw-r--r-- | fs/nfs/idmap.c | 2 | ||||
-rw-r--r-- | fs/nfs/internal.h | 11 | ||||
-rw-r--r-- | fs/nfs/mount_clnt.c | 83 | ||||
-rw-r--r-- | fs/nfs/nfs2xdr.c | 1297 | ||||
-rw-r--r-- | fs/nfs/nfs3xdr.c | 2822 | ||||
-rw-r--r-- | fs/nfs/nfs4_fs.h | 8 | ||||
-rw-r--r-- | fs/nfs/nfs4proc.c | 85 | ||||
-rw-r--r-- | fs/nfs/nfs4xdr.c | 1401 | ||||
-rw-r--r-- | fs/nfs/pagelist.c | 7 | ||||
-rw-r--r-- | fs/nfs/proc.c | 5 | ||||
-rw-r--r-- | fs/nfs/super.c | 18 | ||||
-rw-r--r-- | fs/nfs/unlink.c | 2 | ||||
-rw-r--r-- | fs/nfsd/nfs4callback.c | 690 |
26 files changed, 5726 insertions, 3136 deletions
diff --git a/fs/lockd/Makefile b/fs/lockd/Makefile index 97f6073ab339..ca58d64374ca 100644 --- a/fs/lockd/Makefile +++ b/fs/lockd/Makefile @@ -4,7 +4,7 @@ obj-$(CONFIG_LOCKD) += lockd.o -lockd-objs-y := clntlock.o clntproc.o host.o svc.o svclock.o svcshare.o \ - svcproc.o svcsubs.o mon.o xdr.o grace.o -lockd-objs-$(CONFIG_LOCKD_V4) += xdr4.o svc4proc.o +lockd-objs-y := clntlock.o clntproc.o clntxdr.o host.o svc.o svclock.o \ + svcshare.o svcproc.o svcsubs.o mon.o xdr.o grace.o +lockd-objs-$(CONFIG_LOCKD_V4) += clnt4xdr.o xdr4.o svc4proc.o lockd-objs := $(lockd-objs-y) diff --git a/fs/lockd/clnt4xdr.c b/fs/lockd/clnt4xdr.c new file mode 100644 index 000000000000..f848b52c67b1 --- /dev/null +++ b/fs/lockd/clnt4xdr.c @@ -0,0 +1,605 @@ +/* + * linux/fs/lockd/clnt4xdr.c + * + * XDR functions to encode/decode NLM version 4 RPC arguments and results. + * + * NLM client-side only. + * + * Copyright (C) 2010, Oracle. All rights reserved. + */ + +#include <linux/types.h> +#include <linux/sunrpc/xdr.h> +#include <linux/sunrpc/clnt.h> +#include <linux/sunrpc/stats.h> +#include <linux/lockd/lockd.h> + +#define NLMDBG_FACILITY NLMDBG_XDR + +#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ) +# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!" +#endif + +#if (NLMCLNT_OHSIZE > NLM_MAXSTRLEN) +# error "NLM host name cannot be larger than NLM's maximum string length!" +#endif + +/* + * Declare the space requirements for NLM arguments and replies as + * number of 32bit-words + */ +#define NLM4_void_sz (0) +#define NLM4_cookie_sz (1+(NLM_MAXCOOKIELEN>>2)) +#define NLM4_caller_sz (1+(NLMCLNT_OHSIZE>>2)) +#define NLM4_owner_sz (1+(NLMCLNT_OHSIZE>>2)) +#define NLM4_fhandle_sz (1+(NFS3_FHSIZE>>2)) +#define NLM4_lock_sz (5+NLM4_caller_sz+NLM4_owner_sz+NLM4_fhandle_sz) +#define NLM4_holder_sz (6+NLM4_owner_sz) + +#define NLM4_testargs_sz (NLM4_cookie_sz+1+NLM4_lock_sz) +#define NLM4_lockargs_sz (NLM4_cookie_sz+4+NLM4_lock_sz) +#define NLM4_cancargs_sz (NLM4_cookie_sz+2+NLM4_lock_sz) +#define NLM4_unlockargs_sz (NLM4_cookie_sz+NLM4_lock_sz) + +#define NLM4_testres_sz (NLM4_cookie_sz+1+NLM4_holder_sz) +#define NLM4_res_sz (NLM4_cookie_sz+1) +#define NLM4_norep_sz (0) + + +static s64 loff_t_to_s64(loff_t offset) +{ + s64 res; + + if (offset >= NLM4_OFFSET_MAX) + res = NLM4_OFFSET_MAX; + else if (offset <= -NLM4_OFFSET_MAX) + res = -NLM4_OFFSET_MAX; + else + res = offset; + return res; +} + +static void nlm4_compute_offsets(const struct nlm_lock *lock, + u64 *l_offset, u64 *l_len) +{ + const struct file_lock *fl = &lock->fl; + + BUG_ON(fl->fl_start > NLM4_OFFSET_MAX); + BUG_ON(fl->fl_end > NLM4_OFFSET_MAX && + fl->fl_end != OFFSET_MAX); + + *l_offset = loff_t_to_s64(fl->fl_start); + if (fl->fl_end == OFFSET_MAX) + *l_len = 0; + else + *l_len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1); +} + +/* + * Handle decode buffer overflows out-of-line. + */ +static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) +{ + dprintk("lockd: %s prematurely hit the end of our receive buffer. " + "Remaining buffer length is %tu words.\n", + func, xdr->end - xdr->p); +} + + +/* + * Encode/decode NLMv4 basic data types + * + * Basic NLMv4 data types are defined in Appendix II, section 6.1.4 + * of RFC 1813: "NFS Version 3 Protocol Specification" and in Chapter + * 10 of X/Open's "Protocols for Interworking: XNFS, Version 3W". + * + * Not all basic data types have their own encoding and decoding + * functions. For run-time efficiency, some data types are encoded + * or decoded inline. + */ + +static void encode_bool(struct xdr_stream *xdr, const int value) +{ + __be32 *p; + + p = xdr_reserve_space(xdr, 4); + *p = value ? xdr_one : xdr_zero; +} + +static void encode_int32(struct xdr_stream *xdr, const s32 value) +{ + __be32 *p; + + p = xdr_reserve_space(xdr, 4); + *p = cpu_to_be32(value); +} + +/* + * typedef opaque netobj<MAXNETOBJ_SZ> + */ +static void encode_netobj(struct xdr_stream *xdr, + const u8 *data, const unsigned int length) +{ + __be32 *p; + + BUG_ON(length > XDR_MAX_NETOBJ); + p = xdr_reserve_space(xdr, 4 + length); + xdr_encode_opaque(p, data, length); +} + +static int decode_netobj(struct xdr_stream *xdr, + struct xdr_netobj *obj) +{ + u32 length; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + length = be32_to_cpup(p++); + if (unlikely(length > XDR_MAX_NETOBJ)) + goto out_size; + obj->len = length; + obj->data = (u8 *)p; + return 0; +out_size: + dprintk("NFS: returned netobj was too long: %u\n", length); + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * netobj cookie; + */ +static void encode_cookie(struct xdr_stream *xdr, + const struct nlm_cookie *cookie) +{ + BUG_ON(cookie->len > NLM_MAXCOOKIELEN); + encode_netobj(xdr, (u8 *)&cookie->data, cookie->len); +} + +static int decode_cookie(struct xdr_stream *xdr, + struct nlm_cookie *cookie) +{ + u32 length; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + length = be32_to_cpup(p++); + /* apparently HPUX can return empty cookies */ + if (length == 0) + goto out_hpux; + if (length > NLM_MAXCOOKIELEN) + goto out_size; + p = xdr_inline_decode(xdr, length); + if (unlikely(p == NULL)) + goto out_overflow; + cookie->len = length; + memcpy(cookie->data, p, length); + return 0; +out_hpux: + cookie->len = 4; + memset(cookie->data, 0, 4); + return 0; +out_size: + dprintk("NFS: returned cookie was too long: %u\n", length); + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * netobj fh; + */ +static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh) +{ + BUG_ON(fh->size > NFS3_FHSIZE); + encode_netobj(xdr, (u8 *)&fh->data, fh->size); +} + +/* + * enum nlm4_stats { + * NLM4_GRANTED = 0, + * NLM4_DENIED = 1, + * NLM4_DENIED_NOLOCKS = 2, + * NLM4_BLOCKED = 3, + * NLM4_DENIED_GRACE_PERIOD = 4, + * NLM4_DEADLCK = 5, + * NLM4_ROFS = 6, + * NLM4_STALE_FH = 7, + * NLM4_FBIG = 8, + * NLM4_FAILED = 9 + * }; + * + * struct nlm4_stat { + * nlm4_stats stat; + * }; + * + * NB: we don't swap bytes for the NLM status values. The upper + * layers deal directly with the status value in network byte + * order. + */ +static void encode_nlm4_stat(struct xdr_stream *xdr, + const __be32 stat) +{ + __be32 *p; + + BUG_ON(be32_to_cpu(stat) > NLM_FAILED); + p = xdr_reserve_space(xdr, 4); + *p = stat; +} + +static int decode_nlm4_stat(struct xdr_stream *xdr, __be32 *stat) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + if (unlikely(*p > nlm4_failed)) + goto out_bad_xdr; + *stat = *p; + return 0; +out_bad_xdr: + dprintk("%s: server returned invalid nlm4_stats value: %u\n", + __func__, be32_to_cpup(p)); + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * struct nlm4_holder { + * bool exclusive; + * int32 svid; + * netobj oh; + * uint64 l_offset; + * uint64 l_len; + * }; + */ +static void encode_nlm4_holder(struct xdr_stream *xdr, + const struct nlm_res *result) +{ + const struct nlm_lock *lock = &result->lock; + u64 l_offset, l_len; + __be32 *p; + + encode_bool(xdr, lock->fl.fl_type == F_RDLCK); + encode_int32(xdr, lock->svid); + encode_netobj(xdr, lock->oh.data, lock->oh.len); + + p = xdr_reserve_space(xdr, 4 + 4); + nlm4_compute_offsets(lock, &l_offset, &l_len); + p = xdr_encode_hyper(p, l_offset); + xdr_encode_hyper(p, l_len); +} + +static int decode_nlm4_holder(struct xdr_stream *xdr, struct nlm_res *result) +{ + struct nlm_lock *lock = &result->lock; + struct file_lock *fl = &lock->fl; + u64 l_offset, l_len; + u32 exclusive; + int error; + __be32 *p; + s32 end; + + memset(lock, 0, sizeof(*lock)); + locks_init_lock(fl); + + p = xdr_inline_decode(xdr, 4 + 4); + if (unlikely(p == NULL)) + goto out_overflow; + exclusive = be32_to_cpup(p++); + lock->svid = be32_to_cpup(p); + fl->fl_pid = (pid_t)lock->svid; + + error = decode_netobj(xdr, &lock->oh); + if (unlikely(error)) + goto out; + + p = xdr_inline_decode(xdr, 8 + 8); + if (unlikely(p == NULL)) + goto out_overflow; + + fl->fl_flags = FL_POSIX; + fl->fl_type = exclusive != 0 ? F_WRLCK : F_RDLCK; + p = xdr_decode_hyper(p, &l_offset); + xdr_decode_hyper(p, &l_len); + end = l_offset + l_len - 1; + + fl->fl_start = (loff_t)l_offset; + if (l_len == 0 || end < 0) + fl->fl_end = OFFSET_MAX; + else + fl->fl_end = (loff_t)end; + error = 0; +out: + return error; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * string caller_name<LM_MAXSTRLEN>; + */ +static void encode_caller_name(struct xdr_stream *xdr, const char *name) +{ + /* NB: client-side does not set lock->len */ + u32 length = strlen(name); + __be32 *p; + + BUG_ON(length > NLM_MAXSTRLEN); + p = xdr_reserve_space(xdr, 4 + length); + xdr_encode_opaque(p, name, length); +} + +/* + * struct nlm4_lock { + * string caller_name<LM_MAXSTRLEN>; + * netobj fh; + * netobj oh; + * int32 svid; + * uint64 l_offset; + * uint64 l_len; + * }; + */ +static void encode_nlm4_lock(struct xdr_stream *xdr, + const struct nlm_lock *lock) +{ + u64 l_offset, l_len; + __be32 *p; + + encode_caller_name(xdr, lock->caller); + encode_fh(xdr, &lock->fh); + encode_netobj(xdr, lock->oh.data, lock->oh.len); + + p = xdr_reserve_space(xdr, 4 + 8 + 8); + *p++ = cpu_to_be32(lock->svid); + + nlm4_compute_offsets(lock, &l_offset, &l_len); + p = xdr_encode_hyper(p, l_offset); + xdr_encode_hyper(p, l_len); +} + + +/* + * NLMv4 XDR encode functions + * + * NLMv4 argument types are defined in Appendix II of RFC 1813: + * "NFS Version 3 Protocol Specification" and Chapter 10 of X/Open's + * "Protocols for Interworking: XNFS, Version 3W". + */ + +/* + * struct nlm4_testargs { + * netobj cookie; + * bool exclusive; + * struct nlm4_lock alock; + * }; + */ +static void nlm4_xdr_enc_testargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_args *args) +{ + const struct nlm_lock *lock = &args->lock; + + encode_cookie(xdr, &args->cookie); + encode_bool(xdr, lock->fl.fl_type == F_WRLCK); + encode_nlm4_lock(xdr, lock); +} + +/* + * struct nlm4_lockargs { + * netobj cookie; + * bool block; + * bool exclusive; + * struct nlm4_lock alock; + * bool reclaim; + * int state; + * }; + */ +static void nlm4_xdr_enc_lockargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_args *args) +{ + const struct nlm_lock *lock = &args->lock; + + encode_cookie(xdr, &args->cookie); + encode_bool(xdr, args->block); + encode_bool(xdr, lock->fl.fl_type == F_WRLCK); + encode_nlm4_lock(xdr, lock); + encode_bool(xdr, args->reclaim); + encode_int32(xdr, args->state); +} + +/* + * struct nlm4_cancargs { + * netobj cookie; + * bool block; + * bool exclusive; + * struct nlm4_lock alock; + * }; + */ +static void nlm4_xdr_enc_cancargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_args *args) +{ + const struct nlm_lock *lock = &args->lock; + + encode_cookie(xdr, &args->cookie); + encode_bool(xdr, args->block); + encode_bool(xdr, lock->fl.fl_type == F_WRLCK); + encode_nlm4_lock(xdr, lock); +} + +/* + * struct nlm4_unlockargs { + * netobj cookie; + * struct nlm4_lock alock; + * }; + */ +static void nlm4_xdr_enc_unlockargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_args *args) +{ + const struct nlm_lock *lock = &args->lock; + + encode_cookie(xdr, &args->cookie); + encode_nlm4_lock(xdr, lock); +} + +/* + * struct nlm4_res { + * netobj cookie; + * nlm4_stat stat; + * }; + */ +static void nlm4_xdr_enc_res(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_res *result) +{ + encode_cookie(xdr, &result->cookie); + encode_nlm4_stat(xdr, result->status); +} + +/* + * union nlm4_testrply switch (nlm4_stats stat) { + * case NLM4_DENIED: + * struct nlm4_holder holder; + * default: + * void; + * }; + * + * struct nlm4_testres { + * netobj cookie; + * nlm4_testrply test_stat; + * }; + */ +static void nlm4_xdr_enc_testres(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_res *result) +{ + encode_cookie(xdr, &result->cookie); + encode_nlm4_stat(xdr, result->status); + if (result->status == nlm_lck_denied) + encode_nlm4_holder(xdr, result); +} + + +/* + * NLMv4 XDR decode functions + * + * NLMv4 argument types are defined in Appendix II of RFC 1813: + * "NFS Version 3 Protocol Specification" and Chapter 10 of X/Open's + * "Protocols for Interworking: XNFS, Version 3W". + */ + +/* + * union nlm4_testrply switch (nlm4_stats stat) { + * case NLM4_DENIED: + * struct nlm4_holder holder; + * default: + * void; + * }; + * + * struct nlm4_testres { + * netobj cookie; + * nlm4_testrply test_stat; + * }; + */ +static int decode_nlm4_testrply(struct xdr_stream *xdr, + struct nlm_res *result) +{ + int error; + + error = decode_nlm4_stat(xdr, &result->status); + if (unlikely(error)) + goto out; + if (result->status == nlm_lck_denied) + error = decode_nlm4_holder(xdr, result); +out: + return error; +} + +static int nlm4_xdr_dec_testres(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nlm_res *result) +{ + int error; + + error = decode_cookie(xdr, &result->cookie); + if (unlikely(error)) + goto out; + error = decode_nlm4_testrply(xdr, result); +out: + return error; +} + +/* + * struct nlm4_res { + * netobj cookie; + * nlm4_stat stat; + * }; + */ +static int nlm4_xdr_dec_res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nlm_res *result) +{ + int error; + + error = decode_cookie(xdr, &result->cookie); + if (unlikely(error)) + goto out; + error = decode_nlm4_stat(xdr, &result->status); +out: + return error; +} + + +/* + * For NLM, a void procedure really returns nothing + */ +#define nlm4_xdr_dec_norep NULL + +#define PROC(proc, argtype, restype) \ +[NLMPROC_##proc] = { \ + .p_proc = NLMPROC_##proc, \ + .p_encode = (kxdreproc_t)nlm4_xdr_enc_##argtype, \ + .p_decode = (kxdrdproc_t)nlm4_xdr_dec_##restype, \ + .p_arglen = NLM4_##argtype##_sz, \ + .p_replen = NLM4_##restype##_sz, \ + .p_statidx = NLMPROC_##proc, \ + .p_name = #proc, \ + } + +static struct rpc_procinfo nlm4_procedures[] = { + PROC(TEST, testargs, testres), + PROC(LOCK, lockargs, res), + PROC(CANCEL, cancargs, res), + PROC(UNLOCK, unlockargs, res), + PROC(GRANTED, testargs, res), + PROC(TEST_MSG, testargs, norep), + PROC(LOCK_MSG, lockargs, norep), + PROC(CANCEL_MSG, cancargs, norep), + PROC(UNLOCK_MSG, unlockargs, norep), + PROC(GRANTED_MSG, testargs, norep), + PROC(TEST_RES, testres, norep), + PROC(LOCK_RES, res, norep), + PROC(CANCEL_RES, res, norep), + PROC(UNLOCK_RES, res, norep), + PROC(GRANTED_RES, res, norep), +}; + +struct rpc_version nlm_version4 = { + .number = 4, + .nrprocs = ARRAY_SIZE(nlm4_procedures), + .procs = nlm4_procedures, +}; diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c index 25509eb28fd7..8d4ea8351e3d 100644 --- a/fs/lockd/clntlock.c +++ b/fs/lockd/clntlock.c @@ -79,7 +79,7 @@ EXPORT_SYMBOL_GPL(nlmclnt_init); */ void nlmclnt_done(struct nlm_host *host) { - nlm_release_host(host); + nlmclnt_release_host(host); lockd_down(); } EXPORT_SYMBOL_GPL(nlmclnt_done); @@ -273,7 +273,7 @@ restart: spin_unlock(&nlm_blocked_lock); /* Release host handle after use */ - nlm_release_host(host); + nlmclnt_release_host(host); lockd_down(); return 0; } diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c index 332c54cf75e0..adb45ec9038c 100644 --- a/fs/lockd/clntproc.c +++ b/fs/lockd/clntproc.c @@ -58,7 +58,7 @@ static void nlm_put_lockowner(struct nlm_lockowner *lockowner) return; list_del(&lockowner->list); spin_unlock(&lockowner->host->h_lock); - nlm_release_host(lockowner->host); + nlmclnt_release_host(lockowner->host); kfree(lockowner); } @@ -207,22 +207,22 @@ struct nlm_rqst *nlm_alloc_call(struct nlm_host *host) printk("nlm_alloc_call: failed, waiting for memory\n"); schedule_timeout_interruptible(5*HZ); } - nlm_release_host(host); + nlmclnt_release_host(host); return NULL; } -void nlm_release_call(struct nlm_rqst *call) +void nlmclnt_release_call(struct nlm_rqst *call) { if (!atomic_dec_and_test(&call->a_count)) return; - nlm_release_host(call->a_host); + nlmclnt_release_host(call->a_host); nlmclnt_release_lockargs(call); kfree(call); } static void nlmclnt_rpc_release(void *data) { - nlm_release_call(data); + nlmclnt_release_call(data); } static int nlm_wait_on_grace(wait_queue_head_t *queue) @@ -436,7 +436,7 @@ nlmclnt_test(struct nlm_rqst *req, struct file_lock *fl) status = nlm_stat_to_errno(req->a_res.status); } out: - nlm_release_call(req); + nlmclnt_release_call(req); return status; } @@ -593,7 +593,7 @@ again: out_unblock: nlmclnt_finish_block(block); out: - nlm_release_call(req); + nlmclnt_release_call(req); return status; out_unlock: /* Fatal error: ensure that we remove the lock altogether */ @@ -694,7 +694,7 @@ nlmclnt_unlock(struct nlm_rqst *req, struct file_lock *fl) /* What to do now? I'm out of my depth... */ status = -ENOLCK; out: - nlm_release_call(req); + nlmclnt_release_call(req); return status; } @@ -755,7 +755,7 @@ static int nlmclnt_cancel(struct nlm_host *host, int block, struct file_lock *fl NLMPROC_CANCEL, &nlmclnt_cancel_ops); if (status == 0 && req->a_res.status == nlm_lck_denied) status = -ENOLCK; - nlm_release_call(req); + nlmclnt_release_call(req); return status; } diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c new file mode 100644 index 000000000000..180ac34feb9a --- /dev/null +++ b/fs/lockd/clntxdr.c @@ -0,0 +1,627 @@ +/* + * linux/fs/lockd/clntxdr.c + * + * XDR functions to encode/decode NLM version 3 RPC arguments and results. + * NLM version 3 is backwards compatible with NLM versions 1 and 2. + * + * NLM client-side only. + * + * Copyright (C) 2010, Oracle. All rights reserved. + */ + +#include <linux/types.h> +#include <linux/sunrpc/xdr.h> +#include <linux/sunrpc/clnt.h> +#include <linux/sunrpc/stats.h> +#include <linux/lockd/lockd.h> + +#define NLMDBG_FACILITY NLMDBG_XDR + +#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ) +# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!" +#endif + +/* + * Declare the space requirements for NLM arguments and replies as + * number of 32bit-words + */ +#define NLM_cookie_sz (1+(NLM_MAXCOOKIELEN>>2)) +#define NLM_caller_sz (1+(NLMCLNT_OHSIZE>>2)) +#define NLM_owner_sz (1+(NLMCLNT_OHSIZE>>2)) +#define NLM_fhandle_sz (1+(NFS2_FHSIZE>>2)) +#define NLM_lock_sz (3+NLM_caller_sz+NLM_owner_sz+NLM_fhandle_sz) +#define NLM_holder_sz (4+NLM_owner_sz) + +#define NLM_testargs_sz (NLM_cookie_sz+1+NLM_lock_sz) +#define NLM_lockargs_sz (NLM_cookie_sz+4+NLM_lock_sz) +#define NLM_cancargs_sz (NLM_cookie_sz+2+NLM_lock_sz) +#define NLM_unlockargs_sz (NLM_cookie_sz+NLM_lock_sz) + +#define NLM_testres_sz (NLM_cookie_sz+1+NLM_holder_sz) +#define NLM_res_sz (NLM_cookie_sz+1) +#define NLM_norep_sz (0) + + +static s32 loff_t_to_s32(loff_t offset) +{ + s32 res; + + if (offset >= NLM_OFFSET_MAX) + res = NLM_OFFSET_MAX; + else if (offset <= -NLM_OFFSET_MAX) + res = -NLM_OFFSET_MAX; + else + res = offset; + return res; +} + +static void nlm_compute_offsets(const struct nlm_lock *lock, + u32 *l_offset, u32 *l_len) +{ + const struct file_lock *fl = &lock->fl; + + BUG_ON(fl->fl_start > NLM_OFFSET_MAX); + BUG_ON(fl->fl_end > NLM_OFFSET_MAX && + fl->fl_end != OFFSET_MAX); + + *l_offset = loff_t_to_s32(fl->fl_start); + if (fl->fl_end == OFFSET_MAX) + *l_len = 0; + else + *l_len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1); +} + +/* + * Handle decode buffer overflows out-of-line. + */ +static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) +{ + dprintk("lockd: %s prematurely hit the end of our receive buffer. " + "Remaining buffer length is %tu words.\n", + func, xdr->end - xdr->p); +} + + +/* + * Encode/decode NLMv3 basic data types + * + * Basic NLMv3 data types are not defined in an IETF standards + * document. X/Open has a description of these data types that + * is useful. See Chapter 10 of "Protocols for Interworking: + * XNFS, Version 3W". + * + * Not all basic data types have their own encoding and decoding + * functions. For run-time efficiency, some data types are encoded + * or decoded inline. + */ + +static void encode_bool(struct xdr_stream *xdr, const int value) +{ + __be32 *p; + + p = xdr_reserve_space(xdr, 4); + *p = value ? xdr_one : xdr_zero; +} + +static void encode_int32(struct xdr_stream *xdr, const s32 value) +{ + __be32 *p; + + p = xdr_reserve_space(xdr, 4); + *p = cpu_to_be32(value); +} + +/* + * typedef opaque netobj<MAXNETOBJ_SZ> + */ +static void encode_netobj(struct xdr_stream *xdr, + const u8 *data, const unsigned int length) +{ + __be32 *p; + + BUG_ON(length > XDR_MAX_NETOBJ); + p = xdr_reserve_space(xdr, 4 + length); + xdr_encode_opaque(p, data, length); +} + +static int decode_netobj(struct xdr_stream *xdr, + struct xdr_netobj *obj) +{ + u32 length; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + length = be32_to_cpup(p++); + if (unlikely(length > XDR_MAX_NETOBJ)) + goto out_size; + obj->len = length; + obj->data = (u8 *)p; + return 0; +out_size: + dprintk("NFS: returned netobj was too long: %u\n", length); + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * netobj cookie; + */ +static void encode_cookie(struct xdr_stream *xdr, + const struct nlm_cookie *cookie) +{ + BUG_ON(cookie->len > NLM_MAXCOOKIELEN); + encode_netobj(xdr, (u8 *)&cookie->data, cookie->len); +} + +static int decode_cookie(struct xdr_stream *xdr, + struct nlm_cookie *cookie) +{ + u32 length; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + length = be32_to_cpup(p++); + /* apparently HPUX can return empty cookies */ + if (length == 0) + goto out_hpux; + if (length > NLM_MAXCOOKIELEN) + goto out_size; + p = xdr_inline_decode(xdr, length); + if (unlikely(p == NULL)) + goto out_overflow; + cookie->len = length; + memcpy(cookie->data, p, length); + return 0; +out_hpux: + cookie->len = 4; + memset(cookie->data, 0, 4); + return 0; +out_size: + dprintk("NFS: returned cookie was too long: %u\n", length); + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * netobj fh; + */ +static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh) +{ + BUG_ON(fh->size != NFS2_FHSIZE); + encode_netobj(xdr, (u8 *)&fh->data, NFS2_FHSIZE); +} + +/* + * enum nlm_stats { + * LCK_GRANTED = 0, + * LCK_DENIED = 1, + * LCK_DENIED_NOLOCKS = 2, + * LCK_BLOCKED = 3, + * LCK_DENIED_GRACE_PERIOD = 4 + * }; + * + * + * struct nlm_stat { + * nlm_stats stat; + * }; + * + * NB: we don't swap bytes for the NLM status values. The upper + * layers deal directly with the status value in network byte + * order. + */ + +static void encode_nlm_stat(struct xdr_stream *xdr, + const __be32 stat) +{ + __be32 *p; + + BUG_ON(be32_to_cpu(stat) > NLM_LCK_DENIED_GRACE_PERIOD); + p = xdr_reserve_space(xdr, 4); + *p = stat; +} + +static int decode_nlm_stat(struct xdr_stream *xdr, + __be32 *stat) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + if (unlikely(*p > nlm_lck_denied_grace_period)) + goto out_enum; + *stat = *p; + return 0; +out_enum: + dprintk("%s: server returned invalid nlm_stats value: %u\n", + __func__, be32_to_cpup(p)); + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * struct nlm_holder { + * bool exclusive; + * int uppid; + * netobj oh; + * unsigned l_offset; + * unsigned l_len; + * }; + */ +static void encode_nlm_holder(struct xdr_stream *xdr, + const struct nlm_res *result) +{ + const struct nlm_lock *lock = &result->lock; + u32 l_offset, l_len; + __be32 *p; + + encode_bool(xdr, lock->fl.fl_type == F_RDLCK); + encode_int32(xdr, lock->svid); + encode_netobj(xdr, lock->oh.data, lock->oh.len); + + p = xdr_reserve_space(xdr, 4 + 4); + nlm_compute_offsets(lock, &l_offset, &l_len); + *p++ = cpu_to_be32(l_offset); + *p = cpu_to_be32(l_len); +} + +static int decode_nlm_holder(struct xdr_stream *xdr, struct nlm_res *result) +{ + struct nlm_lock *lock = &result->lock; + struct file_lock *fl = &lock->fl; + u32 exclusive, l_offset, l_len; + int error; + __be32 *p; + s32 end; + + memset(lock, 0, sizeof(*lock)); + locks_init_lock(fl); + + p = xdr_inline_decode(xdr, 4 + 4); + if (unlikely(p == NULL)) + goto out_overflow; + exclusive = be32_to_cpup(p++); + lock->svid = be32_to_cpup(p); + fl->fl_pid = (pid_t)lock->svid; + + error = decode_netobj(xdr, &lock->oh); + if (unlikely(error)) + goto out; + + p = xdr_inline_decode(xdr, 4 + 4); + if (unlikely(p == NULL)) + goto out_overflow; + + fl->fl_flags = FL_POSIX; + fl->fl_type = exclusive != 0 ? F_WRLCK : F_RDLCK; + l_offset = be32_to_cpup(p++); + l_len = be32_to_cpup(p); + end = l_offset + l_len - 1; + + fl->fl_start = (loff_t)l_offset; + if (l_len == 0 || end < 0) + fl->fl_end = OFFSET_MAX; + else + fl->fl_end = (loff_t)end; + error = 0; +out: + return error; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * string caller_name<LM_MAXSTRLEN>; + */ +static void encode_caller_name(struct xdr_stream *xdr, const char *name) +{ + /* NB: client-side does not set lock->len */ + u32 length = strlen(name); + __be32 *p; + + BUG_ON(length > NLM_MAXSTRLEN); + p = xdr_reserve_space(xdr, 4 + length); + xdr_encode_opaque(p, name, length); +} + +/* + * struct nlm_lock { + * string caller_name<LM_MAXSTRLEN>; + * netobj fh; + * netobj oh; + * int uppid; + * unsigned l_offset; + * unsigned l_len; + * }; + */ +static void encode_nlm_lock(struct xdr_stream *xdr, + const struct nlm_lock *lock) +{ + u32 l_offset, l_len; + __be32 *p; + + encode_caller_name(xdr, lock->caller); + encode_fh(xdr, &lock->fh); + encode_netobj(xdr, lock->oh.data, lock->oh.len); + + p = xdr_reserve_space(xdr, 4 + 4 + 4); + *p++ = cpu_to_be32(lock->svid); + + nlm_compute_offsets(lock, &l_offset, &l_len); + *p++ = cpu_to_be32(l_offset); + *p = cpu_to_be32(l_len); +} + + +/* + * NLMv3 XDR encode functions + * + * NLMv3 argument types are defined in Chapter 10 of The Open Group's + * "Protocols for Interworking: XNFS, Version 3W". + */ + +/* + * struct nlm_testargs { + * netobj cookie; + * bool exclusive; + * struct nlm_lock alock; + * }; + */ +static void nlm_xdr_enc_testargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_args *args) +{ + const struct nlm_lock *lock = &args->lock; + + encode_cookie(xdr, &args->cookie); + encode_bool(xdr, lock->fl.fl_type == F_WRLCK); + encode_nlm_lock(xdr, lock); +} + +/* + * struct nlm_lockargs { + * netobj cookie; + * bool block; + * bool exclusive; + * struct nlm_lock alock; + * bool reclaim; + * int state; + * }; + */ +static void nlm_xdr_enc_lockargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_args *args) +{ + const struct nlm_lock *lock = &args->lock; + + encode_cookie(xdr, &args->cookie); + encode_bool(xdr, args->block); + encode_bool(xdr, lock->fl.fl_type == F_WRLCK); + encode_nlm_lock(xdr, lock); + encode_bool(xdr, args->reclaim); + encode_int32(xdr, args->state); +} + +/* + * struct nlm_cancargs { + * netobj cookie; + * bool block; + * bool exclusive; + * struct nlm_lock alock; + * }; + */ +static void nlm_xdr_enc_cancargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_args *args) +{ + const struct nlm_lock *lock = &args->lock; + + encode_cookie(xdr, &args->cookie); + encode_bool(xdr, args->block); + encode_bool(xdr, lock->fl.fl_type == F_WRLCK); + encode_nlm_lock(xdr, lock); +} + +/* + * struct nlm_unlockargs { + * netobj cookie; + * struct nlm_lock alock; + * }; + */ +static void nlm_xdr_enc_unlockargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_args *args) +{ + const struct nlm_lock *lock = &args->lock; + + encode_cookie(xdr, &args->cookie); + encode_nlm_lock(xdr, lock); +} + +/* + * struct nlm_res { + * netobj cookie; + * nlm_stat stat; + * }; + */ +static void nlm_xdr_enc_res(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_res *result) +{ + encode_cookie(xdr, &result->cookie); + encode_nlm_stat(xdr, result->status); +} + +/* + * union nlm_testrply switch (nlm_stats stat) { + * case LCK_DENIED: + * struct nlm_holder holder; + * default: + * void; + * }; + * + * struct nlm_testres { + * netobj cookie; + * nlm_testrply test_stat; + * }; + */ +static void encode_nlm_testrply(struct xdr_stream *xdr, + const struct nlm_res *result) +{ + if (result->status == nlm_lck_denied) + encode_nlm_holder(xdr, result); +} + +static void nlm_xdr_enc_testres(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nlm_res *result) +{ + encode_cookie(xdr, &result->cookie); + encode_nlm_stat(xdr, result->status); + encode_nlm_testrply(xdr, result); +} + + +/* + * NLMv3 XDR decode functions + * + * NLMv3 result types are defined in Chapter 10 of The Open Group's + * "Protocols for Interworking: XNFS, Version 3W". + */ + +/* + * union nlm_testrply switch (nlm_stats stat) { + * case LCK_DENIED: + * struct nlm_holder holder; + * default: + * void; + * }; + * + * struct nlm_testres { + * netobj cookie; + * nlm_testrply test_stat; + * }; + */ +static int decode_nlm_testrply(struct xdr_stream *xdr, + struct nlm_res *result) +{ + int error; + + error = decode_nlm_stat(xdr, &result->status); + if (unlikely(error)) + goto out; + if (result->status == nlm_lck_denied) + error = decode_nlm_holder(xdr, result); +out: + return error; +} + +static int nlm_xdr_dec_testres(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nlm_res *result) +{ + int error; + + error = decode_cookie(xdr, &result->cookie); + if (unlikely(error)) + goto out; + error = decode_nlm_testrply(xdr, result); +out: + return error; +} + +/* + * struct nlm_res { + * netobj cookie; + * nlm_stat stat; + * }; + */ +static int nlm_xdr_dec_res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nlm_res *result) +{ + int error; + + error = decode_cookie(xdr, &result->cookie); + if (unlikely(error)) + goto out; + error = decode_nlm_stat(xdr, &result->status); +out: + return error; +} + + +/* + * For NLM, a void procedure really returns nothing + */ +#define nlm_xdr_dec_norep NULL + +#define PROC(proc, argtype, restype) \ +[NLMPROC_##proc] = { \ + .p_proc = NLMPROC_##proc, \ + .p_encode = (kxdreproc_t)nlm_xdr_enc_##argtype, \ + .p_decode = (kxdrdproc_t)nlm_xdr_dec_##restype, \ + .p_arglen = NLM_##argtype##_sz, \ + .p_replen = NLM_##restype##_sz, \ + .p_statidx = NLMPROC_##proc, \ + .p_name = #proc, \ + } + +static struct rpc_procinfo nlm_procedures[] = { + PROC(TEST, testargs, testres), + PROC(LOCK, lockargs, res), + PROC(CANCEL, cancargs, res), + PROC(UNLOCK, unlockargs, res), + PROC(GRANTED, testargs, res), + PROC(TEST_MSG, testargs, norep), + PROC(LOCK_MSG, lockargs, norep), + PROC(CANCEL_MSG, cancargs, norep), + PROC(UNLOCK_MSG, unlockargs, norep), + PROC(GRANTED_MSG, testargs, norep), + PROC(TEST_RES, testres, norep), + PROC(LOCK_RES, res, norep), + PROC(CANCEL_RES, res, norep), + PROC(UNLOCK_RES, res, norep), + PROC(GRANTED_RES, res, norep), +}; + +static struct rpc_version nlm_version1 = { + .number = 1, + .nrprocs = ARRAY_SIZE(nlm_procedures), + .procs = nlm_procedures, +}; + +static struct rpc_version nlm_version3 = { + .number = 3, + .nrprocs = ARRAY_SIZE(nlm_procedures), + .procs = nlm_procedures, +}; + +static struct rpc_version *nlm_versions[] = { + [1] = &nlm_version1, + [3] = &nlm_version3, +#ifdef CONFIG_LOCKD_V4 + [4] = &nlm_version4, +#endif +}; + +static struct rpc_stat nlm_rpc_stats; + +struct rpc_program nlm_program = { + .name = "lockd", + .number = NLM_PROGRAM, + .nrvers = ARRAY_SIZE(nlm_versions), + .version = nlm_versions, + .stats = &nlm_rpc_stats, +}; diff --git a/fs/lockd/host.c b/fs/lockd/host.c index ed0c59fe23ce..5f1bcb2f06f3 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -25,9 +25,22 @@ #define NLM_HOST_EXPIRE (300 * HZ) #define NLM_HOST_COLLECT (120 * HZ) -static struct hlist_head nlm_hosts[NLM_HOST_NRHASH]; +static struct hlist_head nlm_server_hosts[NLM_HOST_NRHASH]; +static struct hlist_head nlm_client_hosts[NLM_HOST_NRHASH]; + +#define for_each_host(host, pos, chain, table) \ + for ((chain) = (table); \ + (chain) < (table) + NLM_HOST_NRHASH; ++(chain)) \ + hlist_for_each_entry((host), (pos), (chain), h_hash) + +#define for_each_host_safe(host, pos, next, chain, table) \ + for ((chain) = (table); \ + (chain) < (table) + NLM_HOST_NRHASH; ++(chain)) \ + hlist_for_each_entry_safe((host), (pos), (next), \ + (chain), h_hash) + static unsigned long next_gc; -static int nrhosts; +static unsigned long nrhosts; static DEFINE_MUTEX(nlm_host_mutex); static void nlm_gc_hosts(void); @@ -40,8 +53,6 @@ struct nlm_lookup_host_info { const u32 version; /* NLM version to search for */ const char *hostname; /* remote's hostname */ const size_t hostname_len; /* it's length */ - const struct sockaddr *src_sap; /* our address (optional) */ - const size_t src_len; /* it's length */ const int noresvport; /* use non-priv port */ }; @@ -88,127 +99,83 @@ static unsigned int nlm_hash_address(const struct sockaddr *sap) } /* - * Common host lookup routine for server & client + * Allocate and initialize an nlm_host. Common to both client and server. */ -static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni) +static struct nlm_host *nlm_alloc_host(struct nlm_lookup_host_info *ni, + struct nsm_handle *nsm) { - struct hlist_head *chain; - struct hlist_node *pos; - struct nlm_host *host; - struct nsm_handle *nsm = NULL; - - mutex_lock(&nlm_host_mutex); + struct nlm_host *host = NULL; + unsigned long now = jiffies; - if (time_after_eq(jiffies, next_gc)) - nlm_gc_hosts(); - - /* We may keep several nlm_host objects for a peer, because each - * nlm_host is identified by - * (address, protocol, version, server/client) - * We could probably simplify this a little by putting all those - * different NLM rpc_clients into one single nlm_host object. - * This would allow us to have one nlm_host per address. - */ - chain = &nlm_hosts[nlm_hash_address(ni->sap)]; - hlist_for_each_entry(host, pos, chain, h_hash) { - if (!rpc_cmp_addr(nlm_addr(host), ni->sap)) - continue; - - /* See if we have an NSM handle for this client */ - if (!nsm) - nsm = host->h_nsmhandle; - - if (host->h_proto != ni->protocol) - continue; - if (host->h_version != ni->version) - continue; - if (host->h_server != ni->server) - continue; - if (ni->server && ni->src_len != 0 && - !rpc_cmp_addr(nlm_srcaddr(host), ni->src_sap)) - continue; - - /* Move to head of hash chain. */ - hlist_del(&host->h_hash); - hlist_add_head(&host->h_hash, chain); - - nlm_get_host(host); - dprintk("lockd: nlm_lookup_host found host %s (%s)\n", - host->h_name, host->h_addrbuf); - goto out; - } - - /* - * The host wasn't in our hash table. If we don't - * have an NSM handle for it yet, create one. - */ - if (nsm) + if (nsm != NULL) atomic_inc(&nsm->sm_count); else { host = NULL; nsm = nsm_get_handle(ni->sap, ni->salen, ni->hostname, ni->hostname_len); - if (!nsm) { - dprintk("lockd: nlm_lookup_host failed; " - "no nsm handle\n"); + if (unlikely(nsm == NULL)) { + dprintk("lockd: %s failed; no nsm handle\n", + __func__); goto out; } } - host = kzalloc(sizeof(*host), GFP_KERNEL); - if (!host) { + host = kmalloc(sizeof(*host), GFP_KERNEL); + if (unlikely(host == NULL)) { + dprintk("lockd: %s failed; no memory\n", __func__); nsm_release(nsm); - dprintk("lockd: nlm_lookup_host failed; no memory\n"); goto out; } - host->h_name = nsm->sm_name; - host->h_addrbuf = nsm->sm_addrbuf; + memcpy(nlm_addr(host), ni->sap, ni->salen); - host->h_addrlen = ni->salen; + host->h_addrlen = ni->salen; rpc_set_port(nlm_addr(host), 0); - memcpy(nlm_srcaddr(host), ni->src_sap, ni->src_len); - host->h_srcaddrlen = ni->src_len; + host->h_srcaddrlen = 0; + + host->h_rpcclnt = NULL; + host->h_name = nsm->sm_name; host->h_version = ni->version; host->h_proto = ni->protocol; - host->h_rpcclnt = NULL; - mutex_init(&host->h_mutex); - host->h_nextrebind = jiffies + NLM_HOST_REBIND; - host->h_expires = jiffies + NLM_HOST_EXPIRE; - atomic_set(&host->h_count, 1); + host->h_reclaiming = 0; + host->h_server = ni->server; + host->h_noresvport = ni->noresvport; + host->h_inuse = 0; init_waitqueue_head(&host->h_gracewait); init_rwsem(&host->h_rwsem); - host->h_state = 0; /* pseudo NSM state */ - host->h_nsmstate = 0; /* real NSM state */ - host->h_nsmhandle = nsm; - host->h_server = ni->server; - host->h_noresvport = ni->noresvport; - hlist_add_head(&host->h_hash, chain); + host->h_state = 0; + host->h_nsmstate = 0; + host->h_pidcount = 0; + atomic_set(&host->h_count, 1); + mutex_init(&host->h_mutex); + host->h_nextrebind = now + NLM_HOST_REBIND; + host->h_expires = now + NLM_HOST_EXPIRE; INIT_LIST_HEAD(&host->h_lockowners); spin_lock_init(&host->h_lock); INIT_LIST_HEAD(&host->h_granted); INIT_LIST_HEAD(&host->h_reclaim); - - nrhosts++; - - dprintk("lockd: nlm_lookup_host created host %s\n", - host->h_name); + host->h_nsmhandle = nsm; + host->h_addrbuf = nsm->sm_addrbuf; out: - mutex_unlock(&nlm_host_mutex); return host; } /* - * Destroy a host + * Destroy an nlm_host and free associated resources + * + * Caller must hold nlm_host_mutex. */ -static void -nlm_destroy_host(struct nlm_host *host) +static void nlm_destroy_host_locked(struct nlm_host *host) { struct rpc_clnt *clnt; + dprintk("lockd: destroy host %s\n", host->h_name); + BUG_ON(!list_empty(&host->h_lockowners)); BUG_ON(atomic_read(&host->h_count)); + hlist_del_init(&host->h_hash); + nsm_unmonitor(host); nsm_release(host->h_nsmhandle); @@ -216,6 +183,8 @@ nlm_destroy_host(struct nlm_host *host) if (clnt != NULL) rpc_shutdown_client(clnt); kfree(host); + + nrhosts--; } /** @@ -249,12 +218,76 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, .hostname_len = strlen(hostname), .noresvport = noresvport, }; + struct hlist_head *chain; + struct hlist_node *pos; + struct nlm_host *host; + struct nsm_handle *nsm = NULL; dprintk("lockd: %s(host='%s', vers=%u, proto=%s)\n", __func__, (hostname ? hostname : "<none>"), version, (protocol == IPPROTO_UDP ? "udp" : "tcp")); - return nlm_lookup_host(&ni); + mutex_lock(&nlm_host_mutex); + + chain = &nlm_client_hosts[nlm_hash_address(sap)]; + hlist_for_each_entry(host, pos, chain, h_hash) { + if (!rpc_cmp_addr(nlm_addr(host), sap)) + continue; + + /* Same address. Share an NSM handle if we already have one */ + if (nsm == NULL) + nsm = host->h_nsmhandle; + + if (host->h_proto != protocol) + continue; + if (host->h_version != version) + continue; + + nlm_get_host(host); + dprintk("lockd: %s found host %s (%s)\n", __func__, + host->h_name, host->h_addrbuf); + goto out; + } + + host = nlm_alloc_host(&ni, nsm); + if (unlikely(host == NULL)) + goto out; + + hlist_add_head(&host->h_hash, chain); + nrhosts++; + + dprintk("lockd: %s created host %s (%s)\n", __func__, + host->h_name, host->h_addrbuf); + +out: + mutex_unlock(&nlm_host_mutex); + return host; +} + +/** + * nlmclnt_release_host - release client nlm_host + * @host: nlm_host to release + * + */ +void nlmclnt_release_host(struct nlm_host *host) +{ + if (host == NULL) + return; + + dprintk("lockd: release client host %s\n", host->h_name); + + BUG_ON(atomic_read(&host->h_count) < 0); + BUG_ON(host->h_server); + + if (atomic_dec_and_test(&host->h_count)) { + BUG_ON(!list_empty(&host->h_lockowners)); + BUG_ON(!list_empty(&host->h_granted)); + BUG_ON(!list_empty(&host->h_reclaim)); + + mutex_lock(&nlm_host_mutex); + nlm_destroy_host_locked(host); + mutex_unlock(&nlm_host_mutex); + } } /** @@ -279,12 +312,18 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, const char *hostname, const size_t hostname_len) { + struct hlist_head *chain; + struct hlist_node *pos; + struct nlm_host *host = NULL; + struct nsm_handle *nsm = NULL; struct sockaddr_in sin = { .sin_family = AF_INET, }; struct sockaddr_in6 sin6 = { .sin6_family = AF_INET6, }; + struct sockaddr *src_sap; + size_t src_len = rqstp->rq_addrlen; struct nlm_lookup_host_info ni = { .server = 1, .sap = svc_addr(rqstp), @@ -293,27 +332,91 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, .version = rqstp->rq_vers, .hostname = hostname, .hostname_len = hostname_len, - .src_len = rqstp->rq_addrlen, }; dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__, (int)hostname_len, hostname, rqstp->rq_vers, (rqstp->rq_prot == IPPROTO_UDP ? "udp" : "tcp")); + mutex_lock(&nlm_host_mutex); + switch (ni.sap->sa_family) { case AF_INET: sin.sin_addr.s_addr = rqstp->rq_daddr.addr.s_addr; - ni.src_sap = (struct sockaddr *)&sin; + src_sap = (struct sockaddr *)&sin; break; case AF_INET6: ipv6_addr_copy(&sin6.sin6_addr, &rqstp->rq_daddr.addr6); - ni.src_sap = (struct sockaddr *)&sin6; + src_sap = (struct sockaddr *)&sin6; break; default: - return NULL; + dprintk("lockd: %s failed; unrecognized address family\n", + __func__); + goto out; + } + + if (time_after_eq(jiffies, next_gc)) + nlm_gc_hosts(); + + chain = &nlm_server_hosts[nlm_hash_address(ni.sap)]; + hlist_for_each_entry(host, pos, chain, h_hash) { + if (!rpc_cmp_addr(nlm_addr(host), ni.sap)) + continue; + + /* Same address. Share an NSM handle if we already have one */ + if (nsm == NULL) + nsm = host->h_nsmhandle; + + if (host->h_proto != ni.protocol) + continue; + if (host->h_version != ni.version) + continue; + if (!rpc_cmp_addr(nlm_srcaddr(host), src_sap)) + continue; + + /* Move to head of hash chain. */ + hlist_del(&host->h_hash); + hlist_add_head(&host->h_hash, chain); + + nlm_get_host(host); + dprintk("lockd: %s found host %s (%s)\n", + __func__, host->h_name, host->h_addrbuf); + goto out; } - return nlm_lookup_host(&ni); + host = nlm_alloc_host(&ni, nsm); + if (unlikely(host == NULL)) + goto out; + + memcpy(nlm_srcaddr(host), src_sap, src_len); + host->h_srcaddrlen = src_len; + hlist_add_head(&host->h_hash, chain); + nrhosts++; + + dprintk("lockd: %s created host %s (%s)\n", + __func__, host->h_name, host->h_addrbuf); + +out: + mutex_unlock(&nlm_host_mutex); + return host; +} + +/** + * nlmsvc_release_host - release server nlm_host + * @host: nlm_host to release + * + * Host is destroyed later in nlm_gc_host(). + */ +void nlmsvc_release_host(struct nlm_host *host) +{ + if (host == NULL) + return; + + dprintk("lockd: release server host %s\n", host->h_name); + + BUG_ON(atomic_read(&host->h_count) < 0); + BUG_ON(!host->h_server); + atomic_dec(&host->h_count); } /* @@ -413,20 +516,28 @@ struct nlm_host * nlm_get_host(struct nlm_host *host) return host; } -/* - * Release NLM host after use - */ -void nlm_release_host(struct nlm_host *host) +static struct nlm_host *next_host_state(struct hlist_head *cache, + struct nsm_handle *nsm, + const struct nlm_reboot *info) { - if (host != NULL) { - dprintk("lockd: release host %s\n", host->h_name); - BUG_ON(atomic_read(&host->h_count) < 0); - if (atomic_dec_and_test(&host->h_count)) { - BUG_ON(!list_empty(&host->h_lockowners)); - BUG_ON(!list_empty(&host->h_granted)); - BUG_ON(!list_empty(&host->h_reclaim)); + struct nlm_host *host = NULL; + struct hlist_head *chain; + struct hlist_node *pos; + + mutex_lock(&nlm_host_mutex); + for_each_host(host, pos, chain, cache) { + if (host->h_nsmhandle == nsm + && host->h_nsmstate != info->state) { + host->h_nsmstate = info->state; + host->h_state++; + + nlm_get_host(host); + goto out; } } +out: + mutex_unlock(&nlm_host_mutex); + return host; } /** @@ -438,8 +549,6 @@ void nlm_release_host(struct nlm_host *host) */ void nlm_host_rebooted(const struct nlm_reboot *info) { - struct hlist_head *chain; - struct hlist_node *pos; struct nsm_handle *nsm; struct nlm_host *host; @@ -452,32 +561,15 @@ void nlm_host_rebooted(const struct nlm_reboot *info) * lock for this. * To avoid processing a host several times, we match the nsmstate. */ -again: mutex_lock(&nlm_host_mutex); - for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) { - hlist_for_each_entry(host, pos, chain, h_hash) { - if (host->h_nsmhandle == nsm - && host->h_nsmstate != info->state) { - host->h_nsmstate = info->state; - host->h_state++; - - nlm_get_host(host); - mutex_unlock(&nlm_host_mutex); - - if (host->h_server) { - /* We're server for this guy, just ditch - * all the locks he held. */ - nlmsvc_free_host_resources(host); - } else { - /* He's the server, initiate lock recovery. */ - nlmclnt_recovery(host); - } - - nlm_release_host(host); - goto again; - } - } + while ((host = next_host_state(nlm_server_hosts, nsm, info)) != NULL) { + nlmsvc_free_host_resources(host); + nlmsvc_release_host(host); } - mutex_unlock(&nlm_host_mutex); + while ((host = next_host_state(nlm_client_hosts, nsm, info)) != NULL) { + nlmclnt_recovery(host); + nlmclnt_release_host(host); + } + nsm_release(nsm); } @@ -497,13 +589,11 @@ nlm_shutdown_hosts(void) /* First, make all hosts eligible for gc */ dprintk("lockd: nuking all hosts...\n"); - for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) { - hlist_for_each_entry(host, pos, chain, h_hash) { - host->h_expires = jiffies - 1; - if (host->h_rpcclnt) { - rpc_shutdown_client(host->h_rpcclnt); - host->h_rpcclnt = NULL; - } + for_each_host(host, pos, chain, nlm_server_hosts) { + host->h_expires = jiffies - 1; + if (host->h_rpcclnt) { + rpc_shutdown_client(host->h_rpcclnt); + host->h_rpcclnt = NULL; } } @@ -512,15 +602,13 @@ nlm_shutdown_hosts(void) mutex_unlock(&nlm_host_mutex); /* complain if any hosts are left */ - if (nrhosts) { + if (nrhosts != 0) { printk(KERN_WARNING "lockd: couldn't shutdown host module!\n"); - dprintk("lockd: %d hosts left:\n", nrhosts); - for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) { - hlist_for_each_entry(host, pos, chain, h_hash) { - dprintk(" %s (cnt %d use %d exp %ld)\n", - host->h_name, atomic_read(&host->h_count), - host->h_inuse, host->h_expires); - } + dprintk("lockd: %lu hosts left:\n", nrhosts); + for_each_host(host, pos, chain, nlm_server_hosts) { + dprintk(" %s (cnt %d use %d exp %ld)\n", + host->h_name, atomic_read(&host->h_count), + host->h_inuse, host->h_expires); } } } @@ -538,29 +626,22 @@ nlm_gc_hosts(void) struct nlm_host *host; dprintk("lockd: host garbage collection\n"); - for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) { - hlist_for_each_entry(host, pos, chain, h_hash) - host->h_inuse = 0; - } + for_each_host(host, pos, chain, nlm_server_hosts) + host->h_inuse = 0; /* Mark all hosts that hold locks, blocks or shares */ nlmsvc_mark_resources(); - for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) { - hlist_for_each_entry_safe(host, pos, next, chain, h_hash) { - if (atomic_read(&host->h_count) || host->h_inuse - || time_before(jiffies, host->h_expires)) { - dprintk("nlm_gc_hosts skipping %s (cnt %d use %d exp %ld)\n", - host->h_name, atomic_read(&host->h_count), - host->h_inuse, host->h_expires); - continue; - } - dprintk("lockd: delete host %s\n", host->h_name); - hlist_del_init(&host->h_hash); - - nlm_destroy_host(host); - nrhosts--; + for_each_host_safe(host, pos, next, chain, nlm_server_hosts) { + if (atomic_read(&host->h_count) || host->h_inuse + || time_before(jiffies, host->h_expires)) { + dprintk("nlm_gc_hosts skipping %s " + "(cnt %d use %d exp %ld)\n", + host->h_name, atomic_read(&host->h_count), + host->h_inuse, host->h_expires); + continue; } + nlm_destroy_host_locked(host); } next_gc = jiffies + NLM_HOST_COLLECT; diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c index e0c918949644..23d7451b2938 100644 --- a/fs/lockd/mon.c +++ b/fs/lockd/mon.c @@ -401,26 +401,22 @@ void nsm_release(struct nsm_handle *nsm) * Status Monitor wire protocol. */ -static int encode_nsm_string(struct xdr_stream *xdr, const char *string) +static void encode_nsm_string(struct xdr_stream *xdr, const char *string) { const u32 len = strlen(string); __be32 *p; - if (unlikely(len > SM_MAXSTRLEN)) - return -EIO; - p = xdr_reserve_space(xdr, sizeof(u32) + len); - if (unlikely(p == NULL)) - return -EIO; + BUG_ON(len > SM_MAXSTRLEN); + p = xdr_reserve_space(xdr, 4 + len); xdr_encode_opaque(p, string, len); - return 0; } /* * "mon_name" specifies the host to be monitored. */ -static int encode_mon_name(struct xdr_stream *xdr, const struct nsm_args *argp) +static void encode_mon_name(struct xdr_stream *xdr, const struct nsm_args *argp) { - return encode_nsm_string(xdr, argp->mon_name); + encode_nsm_string(xdr, argp->mon_name); } /* @@ -429,35 +425,25 @@ static int encode_mon_name(struct xdr_stream *xdr, const struct nsm_args *argp) * (via the NLMPROC_SM_NOTIFY call) that the state of host "mon_name" * has changed. */ -static int encode_my_id(struct xdr_stream *xdr, const struct nsm_args *argp) +static void encode_my_id(struct xdr_stream *xdr, const struct nsm_args *argp) { - int status; __be32 *p; - status = encode_nsm_string(xdr, utsname()->nodename); - if (unlikely(status != 0)) - return status; - p = xdr_reserve_space(xdr, 3 * sizeof(u32)); - if (unlikely(p == NULL)) - return -EIO; - *p++ = htonl(argp->prog); - *p++ = htonl(argp->vers); - *p++ = htonl(argp->proc); - return 0; + encode_nsm_string(xdr, utsname()->nodename); + p = xdr_reserve_space(xdr, 4 + 4 + 4); + *p++ = cpu_to_be32(argp->prog); + *p++ = cpu_to_be32(argp->vers); + *p = cpu_to_be32(argp->proc); } /* * The "mon_id" argument specifies the non-private arguments * of an NSMPROC_MON or NSMPROC_UNMON call. */ -static int encode_mon_id(struct xdr_stream *xdr, const struct nsm_args *argp) +static void encode_mon_id(struct xdr_stream *xdr, const struct nsm_args *argp) { - int status; - - status = encode_mon_name(xdr, argp); - if (unlikely(status != 0)) - return status; - return encode_my_id(xdr, argp); + encode_mon_name(xdr, argp); + encode_my_id(xdr, argp); } /* @@ -465,68 +451,56 @@ static int encode_mon_id(struct xdr_stream *xdr, const struct nsm_args *argp) * by the NSMPROC_MON call. This information will be supplied in the * NLMPROC_SM_NOTIFY call. */ -static int encode_priv(struct xdr_stream *xdr, const struct nsm_args *argp) +static void encode_priv(struct xdr_stream *xdr, const struct nsm_args *argp) { __be32 *p; p = xdr_reserve_space(xdr, SM_PRIV_SIZE); - if (unlikely(p == NULL)) - return -EIO; xdr_encode_opaque_fixed(p, argp->priv->data, SM_PRIV_SIZE); - return 0; } -static int xdr_enc_mon(struct rpc_rqst *req, __be32 *p, - const struct nsm_args *argp) +static void nsm_xdr_enc_mon(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nsm_args *argp) { - struct xdr_stream xdr; - int status; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - status = encode_mon_id(&xdr, argp); - if (unlikely(status)) - return status; - return encode_priv(&xdr, argp); + encode_mon_id(xdr, argp); + encode_priv(xdr, argp); } -static int xdr_enc_unmon(struct rpc_rqst *req, __be32 *p, - const struct nsm_args *argp) +static void nsm_xdr_enc_unmon(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nsm_args *argp) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - return encode_mon_id(&xdr, argp); + encode_mon_id(xdr, argp); } -static int xdr_dec_stat_res(struct rpc_rqst *rqstp, __be32 *p, - struct nsm_res *resp) +static int nsm_xdr_dec_stat_res(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nsm_res *resp) { - struct xdr_stream xdr; + __be32 *p; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - p = xdr_inline_decode(&xdr, 2 * sizeof(u32)); + p = xdr_inline_decode(xdr, 4 + 4); if (unlikely(p == NULL)) return -EIO; - resp->status = ntohl(*p++); - resp->state = ntohl(*p); + resp->status = be32_to_cpup(p++); + resp->state = be32_to_cpup(p); - dprintk("lockd: xdr_dec_stat_res status %d state %d\n", - resp->status, resp->state); + dprintk("lockd: %s status %d state %d\n", + __func__, resp->status, resp->state); return 0; } -static int xdr_dec_stat(struct rpc_rqst *rqstp, __be32 *p, - struct nsm_res *resp) +static int nsm_xdr_dec_stat(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nsm_res *resp) { - struct xdr_stream xdr; + __be32 *p; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - p = xdr_inline_decode(&xdr, sizeof(u32)); + p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) return -EIO; - resp->state = ntohl(*p); + resp->state = be32_to_cpup(p); - dprintk("lockd: xdr_dec_stat state %d\n", resp->state); + dprintk("lockd: %s state %d\n", __func__, resp->state); return 0; } @@ -542,8 +516,8 @@ static int xdr_dec_stat(struct rpc_rqst *rqstp, __be32 *p, static struct rpc_procinfo nsm_procedures[] = { [NSMPROC_MON] = { .p_proc = NSMPROC_MON, - .p_encode = (kxdrproc_t)xdr_enc_mon, - .p_decode = (kxdrproc_t)xdr_dec_stat_res, + .p_encode = (kxdreproc_t)nsm_xdr_enc_mon, + .p_decode = (kxdrdproc_t)nsm_xdr_dec_stat_res, .p_arglen = SM_mon_sz, .p_replen = SM_monres_sz, .p_statidx = NSMPROC_MON, @@ -551,8 +525,8 @@ static struct rpc_procinfo nsm_procedures[] = { }, [NSMPROC_UNMON] = { .p_proc = NSMPROC_UNMON, - .p_encode = (kxdrproc_t)xdr_enc_unmon, - .p_decode = (kxdrproc_t)xdr_dec_stat, + .p_encode = (kxdreproc_t)nsm_xdr_enc_unmon, + .p_decode = (kxdrdproc_t)nsm_xdr_dec_stat, .p_arglen = SM_mon_id_sz, .p_replen = SM_unmonres_sz, .p_statidx = NSMPROC_UNMON, diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c index 38d261192453..9a41fdc19511 100644 --- a/fs/lockd/svc4proc.c +++ b/fs/lockd/svc4proc.c @@ -51,7 +51,7 @@ nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp, return 0; no_locks: - nlm_release_host(host); + nlmsvc_release_host(host); if (error) return error; return nlm_lck_denied_nolocks; @@ -92,7 +92,7 @@ nlm4svc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp, else dprintk("lockd: TEST4 status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rc; } @@ -134,7 +134,7 @@ nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp, else dprintk("lockd: LOCK status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rc; } @@ -164,7 +164,7 @@ nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp, resp->status = nlmsvc_cancel_blocked(file, &argp->lock); dprintk("lockd: CANCEL status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rpc_success; } @@ -197,7 +197,7 @@ nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp, resp->status = nlmsvc_unlock(file, &argp->lock); dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rpc_success; } @@ -229,7 +229,7 @@ static void nlm4svc_callback_exit(struct rpc_task *task, void *data) static void nlm4svc_callback_release(void *data) { - nlm_release_call(data); + nlmsvc_release_call(data); } static const struct rpc_call_ops nlm4svc_callback_ops = { @@ -261,7 +261,7 @@ static __be32 nlm4svc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args stat = func(rqstp, argp, &call->a_res); if (stat != 0) { - nlm_release_call(call); + nlmsvc_release_call(call); return stat; } @@ -334,7 +334,7 @@ nlm4svc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp, resp->status = nlmsvc_share_file(host, file, argp); dprintk("lockd: SHARE status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rpc_success; } @@ -367,7 +367,7 @@ nlm4svc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp, resp->status = nlmsvc_unshare_file(host, file, argp); dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rpc_success; } @@ -399,7 +399,7 @@ nlm4svc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp, return rpc_success; nlmsvc_free_host_resources(host); - nlm_release_host(host); + nlmsvc_release_host(host); return rpc_success; } diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index ef5659b211e9..6e31695d046f 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -46,6 +46,7 @@ static void nlmsvc_remove_block(struct nlm_block *block); static int nlmsvc_setgrantargs(struct nlm_rqst *call, struct nlm_lock *lock); static void nlmsvc_freegrantargs(struct nlm_rqst *call); static const struct rpc_call_ops nlmsvc_grant_ops; +static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie); /* * The list of blocked locks to retry @@ -233,7 +234,7 @@ nlmsvc_create_block(struct svc_rqst *rqstp, struct nlm_host *host, failed_free: kfree(block); failed: - nlm_release_call(call); + nlmsvc_release_call(call); return NULL; } @@ -266,7 +267,7 @@ static void nlmsvc_free_block(struct kref *kref) mutex_unlock(&file->f_mutex); nlmsvc_freegrantargs(block->b_call); - nlm_release_call(block->b_call); + nlmsvc_release_call(block->b_call); nlm_release_file(block->b_file); kfree(block->b_fl); kfree(block); @@ -934,3 +935,32 @@ nlmsvc_retry_blocked(void) return timeout; } + +#ifdef RPC_DEBUG +static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) +{ + /* + * We can get away with a static buffer because we're only + * called with BKL held. + */ + static char buf[2*NLM_MAXCOOKIELEN+1]; + unsigned int i, len = sizeof(buf); + char *p = buf; + + len--; /* allow for trailing \0 */ + if (len < 3) + return "???"; + for (i = 0 ; i < cookie->len ; i++) { + if (len < 2) { + strcpy(p-3, "..."); + break; + } + sprintf(p, "%02x", cookie->data[i]); + p += 2; + len -= 2; + } + *p = '\0'; + + return buf; +} +#endif diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c index 0caea5310ac3..d27aab11f324 100644 --- a/fs/lockd/svcproc.c +++ b/fs/lockd/svcproc.c @@ -80,7 +80,7 @@ nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp, return 0; no_locks: - nlm_release_host(host); + nlmsvc_release_host(host); if (error) return error; return nlm_lck_denied_nolocks; @@ -122,7 +122,7 @@ nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp, dprintk("lockd: TEST status %d vers %d\n", ntohl(resp->status), rqstp->rq_vers); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rc; } @@ -164,7 +164,7 @@ nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp, else dprintk("lockd: LOCK status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rc; } @@ -194,7 +194,7 @@ nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp, resp->status = cast_status(nlmsvc_cancel_blocked(file, &argp->lock)); dprintk("lockd: CANCEL status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rpc_success; } @@ -227,7 +227,7 @@ nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp, resp->status = cast_status(nlmsvc_unlock(file, &argp->lock)); dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rpc_success; } @@ -257,9 +257,17 @@ static void nlmsvc_callback_exit(struct rpc_task *task, void *data) -task->tk_status); } +void nlmsvc_release_call(struct nlm_rqst *call) +{ + if (!atomic_dec_and_test(&call->a_count)) + return; + nlmsvc_release_host(call->a_host); + kfree(call); +} + static void nlmsvc_callback_release(void *data) { - nlm_release_call(data); + nlmsvc_release_call(data); } static const struct rpc_call_ops nlmsvc_callback_ops = { @@ -291,7 +299,7 @@ static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args stat = func(rqstp, argp, &call->a_res); if (stat != 0) { - nlm_release_call(call); + nlmsvc_release_call(call); return stat; } @@ -366,7 +374,7 @@ nlmsvc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp, resp->status = cast_status(nlmsvc_share_file(host, file, argp)); dprintk("lockd: SHARE status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rpc_success; } @@ -399,7 +407,7 @@ nlmsvc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp, resp->status = cast_status(nlmsvc_unshare_file(host, file, argp)); dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status)); - nlm_release_host(host); + nlmsvc_release_host(host); nlm_release_file(file); return rpc_success; } @@ -431,7 +439,7 @@ nlmsvc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp, return rpc_success; nlmsvc_free_host_resources(host); - nlm_release_host(host); + nlmsvc_release_host(host); return rpc_success; } diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c index b583ab0a4cbb..964666c68a86 100644 --- a/fs/lockd/xdr.c +++ b/fs/lockd/xdr.c @@ -149,37 +149,6 @@ nlm_decode_lock(__be32 *p, struct nlm_lock *lock) } /* - * Encode a lock as part of an NLM call - */ -static __be32 * -nlm_encode_lock(__be32 *p, struct nlm_lock *lock) -{ - struct file_lock *fl = &lock->fl; - __s32 start, len; - - if (!(p = xdr_encode_string(p, lock->caller)) - || !(p = nlm_encode_fh(p, &lock->fh)) - || !(p = nlm_encode_oh(p, &lock->oh))) - return NULL; - - if (fl->fl_start > NLM_OFFSET_MAX - || (fl->fl_end > NLM_OFFSET_MAX && fl->fl_end != OFFSET_MAX)) - return NULL; - - start = loff_t_to_s32(fl->fl_start); - if (fl->fl_end == OFFSET_MAX) - len = 0; - else - len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1); - - *p++ = htonl(lock->svid); - *p++ = htonl(start); - *p++ = htonl(len); - - return p; -} - -/* * Encode result of a TEST/TEST_MSG call */ static __be32 * @@ -372,259 +341,3 @@ nlmsvc_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) { return xdr_ressize_check(rqstp, p); } - -/* - * Now, the client side XDR functions - */ -#ifdef NLMCLNT_SUPPORT_SHARES -static int -nlmclt_decode_void(struct rpc_rqst *req, u32 *p, void *ptr) -{ - return 0; -} -#endif - -static int -nlmclt_encode_testargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ - struct nlm_lock *lock = &argp->lock; - - if (!(p = nlm_encode_cookie(p, &argp->cookie))) - return -EIO; - *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; - if (!(p = nlm_encode_lock(p, lock))) - return -EIO; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlmclt_decode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ - if (!(p = nlm_decode_cookie(p, &resp->cookie))) - return -EIO; - resp->status = *p++; - if (resp->status == nlm_lck_denied) { - struct file_lock *fl = &resp->lock.fl; - u32 excl; - s32 start, len, end; - - memset(&resp->lock, 0, sizeof(resp->lock)); - locks_init_lock(fl); - excl = ntohl(*p++); - resp->lock.svid = ntohl(*p++); - fl->fl_pid = (pid_t)resp->lock.svid; - if (!(p = nlm_decode_oh(p, &resp->lock.oh))) - return -EIO; - - fl->fl_flags = FL_POSIX; - fl->fl_type = excl? F_WRLCK : F_RDLCK; - start = ntohl(*p++); - len = ntohl(*p++); - end = start + len - 1; - - fl->fl_start = s32_to_loff_t(start); - if (len == 0 || end < 0) - fl->fl_end = OFFSET_MAX; - else - fl->fl_end = s32_to_loff_t(end); - } - return 0; -} - - -static int -nlmclt_encode_lockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ - struct nlm_lock *lock = &argp->lock; - - if (!(p = nlm_encode_cookie(p, &argp->cookie))) - return -EIO; - *p++ = argp->block? xdr_one : xdr_zero; - *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; - if (!(p = nlm_encode_lock(p, lock))) - return -EIO; - *p++ = argp->reclaim? xdr_one : xdr_zero; - *p++ = htonl(argp->state); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlmclt_encode_cancargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ - struct nlm_lock *lock = &argp->lock; - - if (!(p = nlm_encode_cookie(p, &argp->cookie))) - return -EIO; - *p++ = argp->block? xdr_one : xdr_zero; - *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; - if (!(p = nlm_encode_lock(p, lock))) - return -EIO; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlmclt_encode_unlockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ - struct nlm_lock *lock = &argp->lock; - - if (!(p = nlm_encode_cookie(p, &argp->cookie))) - return -EIO; - if (!(p = nlm_encode_lock(p, lock))) - return -EIO; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlmclt_encode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ - if (!(p = nlm_encode_cookie(p, &resp->cookie))) - return -EIO; - *p++ = resp->status; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlmclt_encode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ - if (!(p = nlm_encode_testres(p, resp))) - return -EIO; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlmclt_decode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ - if (!(p = nlm_decode_cookie(p, &resp->cookie))) - return -EIO; - resp->status = *p++; - return 0; -} - -#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ) -# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!" -#endif - -/* - * Buffer requirements for NLM - */ -#define NLM_void_sz 0 -#define NLM_cookie_sz 1+XDR_QUADLEN(NLM_MAXCOOKIELEN) -#define NLM_caller_sz 1+XDR_QUADLEN(NLMCLNT_OHSIZE) -#define NLM_owner_sz 1+XDR_QUADLEN(NLMCLNT_OHSIZE) -#define NLM_fhandle_sz 1+XDR_QUADLEN(NFS2_FHSIZE) -#define NLM_lock_sz 3+NLM_caller_sz+NLM_owner_sz+NLM_fhandle_sz -#define NLM_holder_sz 4+NLM_owner_sz - -#define NLM_testargs_sz NLM_cookie_sz+1+NLM_lock_sz -#define NLM_lockargs_sz NLM_cookie_sz+4+NLM_lock_sz -#define NLM_cancargs_sz NLM_cookie_sz+2+NLM_lock_sz -#define NLM_unlockargs_sz NLM_cookie_sz+NLM_lock_sz - -#define NLM_testres_sz NLM_cookie_sz+1+NLM_holder_sz -#define NLM_res_sz NLM_cookie_sz+1 -#define NLM_norep_sz 0 - -/* - * For NLM, a void procedure really returns nothing - */ -#define nlmclt_decode_norep NULL - -#define PROC(proc, argtype, restype) \ -[NLMPROC_##proc] = { \ - .p_proc = NLMPROC_##proc, \ - .p_encode = (kxdrproc_t) nlmclt_encode_##argtype, \ - .p_decode = (kxdrproc_t) nlmclt_decode_##restype, \ - .p_arglen = NLM_##argtype##_sz, \ - .p_replen = NLM_##restype##_sz, \ - .p_statidx = NLMPROC_##proc, \ - .p_name = #proc, \ - } - -static struct rpc_procinfo nlm_procedures[] = { - PROC(TEST, testargs, testres), - PROC(LOCK, lockargs, res), - PROC(CANCEL, cancargs, res), - PROC(UNLOCK, unlockargs, res), - PROC(GRANTED, testargs, res), - PROC(TEST_MSG, testargs, norep), - PROC(LOCK_MSG, lockargs, norep), - PROC(CANCEL_MSG, cancargs, norep), - PROC(UNLOCK_MSG, unlockargs, norep), - PROC(GRANTED_MSG, testargs, norep), - PROC(TEST_RES, testres, norep), - PROC(LOCK_RES, res, norep), - PROC(CANCEL_RES, res, norep), - PROC(UNLOCK_RES, res, norep), - PROC(GRANTED_RES, res, norep), -#ifdef NLMCLNT_SUPPORT_SHARES - PROC(SHARE, shareargs, shareres), - PROC(UNSHARE, shareargs, shareres), - PROC(NM_LOCK, lockargs, res), - PROC(FREE_ALL, notify, void), -#endif -}; - -static struct rpc_version nlm_version1 = { - .number = 1, - .nrprocs = 16, - .procs = nlm_procedures, -}; - -static struct rpc_version nlm_version3 = { - .number = 3, - .nrprocs = 24, - .procs = nlm_procedures, -}; - -static struct rpc_version * nlm_versions[] = { - [1] = &nlm_version1, - [3] = &nlm_version3, -#ifdef CONFIG_LOCKD_V4 - [4] = &nlm_version4, -#endif -}; - -static struct rpc_stat nlm_stats; - -struct rpc_program nlm_program = { - .name = "lockd", - .number = NLM_PROGRAM, - .nrvers = ARRAY_SIZE(nlm_versions), - .version = nlm_versions, - .stats = &nlm_stats, -}; - -#ifdef RPC_DEBUG -const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) -{ - /* - * We can get away with a static buffer because we're only - * called with BKL held. - */ - static char buf[2*NLM_MAXCOOKIELEN+1]; - unsigned int i, len = sizeof(buf); - char *p = buf; - - len--; /* allow for trailing \0 */ - if (len < 3) - return "???"; - for (i = 0 ; i < cookie->len ; i++) { - if (len < 2) { - strcpy(p-3, "..."); - break; - } - sprintf(p, "%02x", cookie->data[i]); - p += 2; - len -= 2; - } - *p = '\0'; - - return buf; -} -#endif diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c index ad9dbbc9145d..dfa4789cd460 100644 --- a/fs/lockd/xdr4.c +++ b/fs/lockd/xdr4.c @@ -93,15 +93,6 @@ nlm4_decode_fh(__be32 *p, struct nfs_fh *f) return p + XDR_QUADLEN(f->size); } -static __be32 * -nlm4_encode_fh(__be32 *p, struct nfs_fh *f) -{ - *p++ = htonl(f->size); - if (f->size) p[XDR_QUADLEN(f->size)-1] = 0; /* don't leak anything */ - memcpy(p, f->data, f->size); - return p + XDR_QUADLEN(f->size); -} - /* * Encode and decode owner handle */ @@ -112,12 +103,6 @@ nlm4_decode_oh(__be32 *p, struct xdr_netobj *oh) } static __be32 * -nlm4_encode_oh(__be32 *p, struct xdr_netobj *oh) -{ - return xdr_encode_netobj(p, oh); -} - -static __be32 * nlm4_decode_lock(__be32 *p, struct nlm_lock *lock) { struct file_lock *fl = &lock->fl; @@ -150,38 +135,6 @@ nlm4_decode_lock(__be32 *p, struct nlm_lock *lock) } /* - * Encode a lock as part of an NLM call - */ -static __be32 * -nlm4_encode_lock(__be32 *p, struct nlm_lock *lock) -{ - struct file_lock *fl = &lock->fl; - __s64 start, len; - - if (!(p = xdr_encode_string(p, lock->caller)) - || !(p = nlm4_encode_fh(p, &lock->fh)) - || !(p = nlm4_encode_oh(p, &lock->oh))) - return NULL; - - if (fl->fl_start > NLM4_OFFSET_MAX - || (fl->fl_end > NLM4_OFFSET_MAX && fl->fl_end != OFFSET_MAX)) - return NULL; - - *p++ = htonl(lock->svid); - - start = loff_t_to_s64(fl->fl_start); - if (fl->fl_end == OFFSET_MAX) - len = 0; - else - len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1); - - p = xdr_encode_hyper(p, start); - p = xdr_encode_hyper(p, len); - - return p; -} - -/* * Encode result of a TEST/TEST_MSG call */ static __be32 * @@ -379,211 +332,3 @@ nlm4svc_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) { return xdr_ressize_check(rqstp, p); } - -/* - * Now, the client side XDR functions - */ -#ifdef NLMCLNT_SUPPORT_SHARES -static int -nlm4clt_decode_void(struct rpc_rqst *req, __be32 *p, void *ptr) -{ - return 0; -} -#endif - -static int -nlm4clt_encode_testargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ - struct nlm_lock *lock = &argp->lock; - - if (!(p = nlm4_encode_cookie(p, &argp->cookie))) - return -EIO; - *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; - if (!(p = nlm4_encode_lock(p, lock))) - return -EIO; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlm4clt_decode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ - if (!(p = nlm4_decode_cookie(p, &resp->cookie))) - return -EIO; - resp->status = *p++; - if (resp->status == nlm_lck_denied) { - struct file_lock *fl = &resp->lock.fl; - u32 excl; - __u64 start, len; - __s64 end; - - memset(&resp->lock, 0, sizeof(resp->lock)); - locks_init_lock(fl); - excl = ntohl(*p++); - resp->lock.svid = ntohl(*p++); - fl->fl_pid = (pid_t)resp->lock.svid; - if (!(p = nlm4_decode_oh(p, &resp->lock.oh))) - return -EIO; - - fl->fl_flags = FL_POSIX; - fl->fl_type = excl? F_WRLCK : F_RDLCK; - p = xdr_decode_hyper(p, &start); - p = xdr_decode_hyper(p, &len); - end = start + len - 1; - - fl->fl_start = s64_to_loff_t(start); - if (len == 0 || end < 0) - fl->fl_end = OFFSET_MAX; - else - fl->fl_end = s64_to_loff_t(end); - } - return 0; -} - - -static int -nlm4clt_encode_lockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ - struct nlm_lock *lock = &argp->lock; - - if (!(p = nlm4_encode_cookie(p, &argp->cookie))) - return -EIO; - *p++ = argp->block? xdr_one : xdr_zero; - *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; - if (!(p = nlm4_encode_lock(p, lock))) - return -EIO; - *p++ = argp->reclaim? xdr_one : xdr_zero; - *p++ = htonl(argp->state); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlm4clt_encode_cancargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ - struct nlm_lock *lock = &argp->lock; - - if (!(p = nlm4_encode_cookie(p, &argp->cookie))) - return -EIO; - *p++ = argp->block? xdr_one : xdr_zero; - *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; - if (!(p = nlm4_encode_lock(p, lock))) - return -EIO; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlm4clt_encode_unlockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ - struct nlm_lock *lock = &argp->lock; - - if (!(p = nlm4_encode_cookie(p, &argp->cookie))) - return -EIO; - if (!(p = nlm4_encode_lock(p, lock))) - return -EIO; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlm4clt_encode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ - if (!(p = nlm4_encode_cookie(p, &resp->cookie))) - return -EIO; - *p++ = resp->status; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlm4clt_encode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ - if (!(p = nlm4_encode_testres(p, resp))) - return -EIO; - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; -} - -static int -nlm4clt_decode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ - if (!(p = nlm4_decode_cookie(p, &resp->cookie))) - return -EIO; - resp->status = *p++; - return 0; -} - -#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ) -# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!" -#endif - -#if (NLMCLNT_OHSIZE > NLM_MAXSTRLEN) -# error "NLM host name cannot be larger than NLM's maximum string length!" -#endif - -/* - * Buffer requirements for NLM - */ -#define NLM4_void_sz 0 -#define NLM4_cookie_sz 1+XDR_QUADLEN(NLM_MAXCOOKIELEN) -#define NLM4_caller_sz 1+XDR_QUADLEN(NLMCLNT_OHSIZE) -#define NLM4_owner_sz 1+XDR_QUADLEN(NLMCLNT_OHSIZE) -#define NLM4_fhandle_sz 1+XDR_QUADLEN(NFS3_FHSIZE) -#define NLM4_lock_sz 5+NLM4_caller_sz+NLM4_owner_sz+NLM4_fhandle_sz -#define NLM4_holder_sz 6+NLM4_owner_sz - -#define NLM4_testargs_sz NLM4_cookie_sz+1+NLM4_lock_sz -#define NLM4_lockargs_sz NLM4_cookie_sz+4+NLM4_lock_sz -#define NLM4_cancargs_sz NLM4_cookie_sz+2+NLM4_lock_sz -#define NLM4_unlockargs_sz NLM4_cookie_sz+NLM4_lock_sz - -#define NLM4_testres_sz NLM4_cookie_sz+1+NLM4_holder_sz -#define NLM4_res_sz NLM4_cookie_sz+1 -#define NLM4_norep_sz 0 - -/* - * For NLM, a void procedure really returns nothing - */ -#define nlm4clt_decode_norep NULL - -#define PROC(proc, argtype, restype) \ -[NLMPROC_##proc] = { \ - .p_proc = NLMPROC_##proc, \ - .p_encode = (kxdrproc_t) nlm4clt_encode_##argtype, \ - .p_decode = (kxdrproc_t) nlm4clt_decode_##restype, \ - .p_arglen = NLM4_##argtype##_sz, \ - .p_replen = NLM4_##restype##_sz, \ - .p_statidx = NLMPROC_##proc, \ - .p_name = #proc, \ - } - -static struct rpc_procinfo nlm4_procedures[] = { - PROC(TEST, testargs, testres), - PROC(LOCK, lockargs, res), - PROC(CANCEL, cancargs, res), - PROC(UNLOCK, unlockargs, res), - PROC(GRANTED, testargs, res), - PROC(TEST_MSG, testargs, norep), - PROC(LOCK_MSG, lockargs, norep), - PROC(CANCEL_MSG, cancargs, norep), - PROC(UNLOCK_MSG, unlockargs, norep), - PROC(GRANTED_MSG, testargs, norep), - PROC(TEST_RES, testres, norep), - PROC(LOCK_RES, res, norep), - PROC(CANCEL_RES, res, norep), - PROC(UNLOCK_RES, res, norep), - PROC(GRANTED_RES, res, norep), -#ifdef NLMCLNT_SUPPORT_SHARES - PROC(SHARE, shareargs, shareres), - PROC(UNSHARE, shareargs, shareres), - PROC(NM_LOCK, lockargs, res), - PROC(FREE_ALL, notify, void), -#endif -}; - -struct rpc_version nlm_version4 = { - .number = 4, - .nrprocs = 24, - .procs = nlm4_procedures, -}; diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 996dd8989a91..65d5cb4f70b1 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -35,6 +35,7 @@ #include <linux/sched.h> #include <linux/vmalloc.h> #include <linux/kmemleak.h> +#include <linux/xattr.h> #include "delegation.h" #include "iostat.h" @@ -125,9 +126,10 @@ const struct inode_operations nfs4_dir_inode_operations = { .permission = nfs_permission, .getattr = nfs_getattr, .setattr = nfs_setattr, - .getxattr = nfs4_getxattr, - .setxattr = nfs4_setxattr, - .listxattr = nfs4_listxattr, + .getxattr = generic_getxattr, + .setxattr = generic_setxattr, + .listxattr = generic_listxattr, + .removexattr = generic_removexattr, }; #endif /* CONFIG_NFS_V4 */ @@ -172,7 +174,7 @@ struct nfs_cache_array { struct nfs_cache_array_entry array[0]; }; -typedef __be32 * (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int); +typedef int (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, int); typedef struct { struct file *file; struct page *page; @@ -378,14 +380,14 @@ error: return error; } -/* Fill in an entry based on the xdr code stored in desc->page */ -static -int xdr_decode(nfs_readdir_descriptor_t *desc, struct nfs_entry *entry, struct xdr_stream *stream) +static int xdr_decode(nfs_readdir_descriptor_t *desc, + struct nfs_entry *entry, struct xdr_stream *xdr) { - __be32 *p = desc->decode(stream, entry, NFS_SERVER(desc->file->f_path.dentry->d_inode), desc->plus); - if (IS_ERR(p)) - return PTR_ERR(p); + int error; + error = desc->decode(xdr, entry, desc->plus); + if (error) + return error; entry->fattr->time_start = desc->timestamp; entry->fattr->gencount = desc->gencount; return 0; @@ -566,6 +568,7 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page, entry.eof = 0; entry.fh = nfs_alloc_fhandle(); entry.fattr = nfs_alloc_fattr(); + entry.server = NFS_SERVER(inode); if (entry.fh == NULL || entry.fattr == NULL) goto out; @@ -1217,7 +1220,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru goto out_unblock_sillyrename; } inode = nfs_fhget(dentry->d_sb, fhandle, fattr); - res = (struct dentry *)inode; + res = ERR_CAST(inode); if (IS_ERR(res)) goto out_unblock_sillyrename; @@ -1351,8 +1354,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry if (nd->flags & LOOKUP_CREATE) { attr.ia_mode = nd->intent.open.create_mode; attr.ia_valid = ATTR_MODE; - if (!IS_POSIXACL(dir)) - attr.ia_mode &= ~current_umask(); + attr.ia_mode &= ~current_umask(); } else { open_flags &= ~(O_EXCL | O_CREAT); attr.ia_valid = 0; diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 4e2d9b6b1380..18696882f1c6 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -238,7 +238,7 @@ int nfs_map_gid_to_group(struct nfs_client *clp, __u32 gid, char *buf, size_t bu return nfs_idmap_lookup_name(gid, "group", buf, buflen); } -#else /* CONFIG_NFS_USE_IDMAPPER not defined */ +#else /* CONFIG_NFS_USE_NEW_IDMAPPER not defined */ #include <linux/module.h> #include <linux/mutex.h> diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index e6356b750b77..435eae3666bd 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -185,17 +185,20 @@ extern int __init nfs_init_directcache(void); extern void nfs_destroy_directcache(void); /* nfs2xdr.c */ -extern int nfs_stat_to_errno(int); +extern int nfs_stat_to_errno(enum nfs_stat); extern struct rpc_procinfo nfs_procedures[]; -extern __be32 *nfs_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int); +extern int nfs2_decode_dirent(struct xdr_stream *, + struct nfs_entry *, int); /* nfs3xdr.c */ extern struct rpc_procinfo nfs3_procedures[]; -extern __be32 *nfs3_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int); +extern int nfs3_decode_dirent(struct xdr_stream *, + struct nfs_entry *, int); /* nfs4xdr.c */ #ifdef CONFIG_NFS_V4 -extern __be32 *nfs4_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int); +extern int nfs4_decode_dirent(struct xdr_stream *, + struct nfs_entry *, int); #endif #ifdef CONFIG_NFS_V4_1 extern const u32 nfs41_maxread_overhead; diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c index 4f981f1f6689..d4c2d6b7507e 100644 --- a/fs/nfs/mount_clnt.c +++ b/fs/nfs/mount_clnt.c @@ -236,10 +236,8 @@ void nfs_umount(const struct nfs_mount_request *info) .authflavor = RPC_AUTH_UNIX, .flags = RPC_CLNT_CREATE_NOPING, }; - struct mountres result; struct rpc_message msg = { .rpc_argp = info->dirpath, - .rpc_resp = &result, }; struct rpc_clnt *clnt; int status; @@ -248,7 +246,7 @@ void nfs_umount(const struct nfs_mount_request *info) args.flags |= RPC_CLNT_CREATE_NONPRIVPORT; clnt = rpc_create(&args); - if (unlikely(IS_ERR(clnt))) + if (IS_ERR(clnt)) goto out_clnt_err; dprintk("NFS: sending UMNT request for %s:%s\n", @@ -280,29 +278,20 @@ out_call_err: * XDR encode/decode functions for MOUNT */ -static int encode_mntdirpath(struct xdr_stream *xdr, const char *pathname) +static void encode_mntdirpath(struct xdr_stream *xdr, const char *pathname) { const u32 pathname_len = strlen(pathname); __be32 *p; - if (unlikely(pathname_len > MNTPATHLEN)) - return -EIO; - - p = xdr_reserve_space(xdr, sizeof(u32) + pathname_len); - if (unlikely(p == NULL)) - return -EIO; + BUG_ON(pathname_len > MNTPATHLEN); + p = xdr_reserve_space(xdr, 4 + pathname_len); xdr_encode_opaque(p, pathname, pathname_len); - - return 0; } -static int mnt_enc_dirpath(struct rpc_rqst *req, __be32 *p, - const char *dirpath) +static void mnt_xdr_enc_dirpath(struct rpc_rqst *req, struct xdr_stream *xdr, + const char *dirpath) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - return encode_mntdirpath(&xdr, dirpath); + encode_mntdirpath(xdr, dirpath); } /* @@ -320,10 +309,10 @@ static int decode_status(struct xdr_stream *xdr, struct mountres *res) u32 status; __be32 *p; - p = xdr_inline_decode(xdr, sizeof(status)); + p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) return -EIO; - status = ntohl(*p); + status = be32_to_cpup(p); for (i = 0; i < ARRAY_SIZE(mnt_errtbl); i++) { if (mnt_errtbl[i].status == status) { @@ -351,18 +340,16 @@ static int decode_fhandle(struct xdr_stream *xdr, struct mountres *res) return 0; } -static int mnt_dec_mountres(struct rpc_rqst *req, __be32 *p, - struct mountres *res) +static int mnt_xdr_dec_mountres(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct mountres *res) { - struct xdr_stream xdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - - status = decode_status(&xdr, res); + status = decode_status(xdr, res); if (unlikely(status != 0 || res->errno != 0)) return status; - return decode_fhandle(&xdr, res); + return decode_fhandle(xdr, res); } static int decode_fhs_status(struct xdr_stream *xdr, struct mountres *res) @@ -371,10 +358,10 @@ static int decode_fhs_status(struct xdr_stream *xdr, struct mountres *res) u32 status; __be32 *p; - p = xdr_inline_decode(xdr, sizeof(status)); + p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) return -EIO; - status = ntohl(*p); + status = be32_to_cpup(p); for (i = 0; i < ARRAY_SIZE(mnt3_errtbl); i++) { if (mnt3_errtbl[i].status == status) { @@ -394,11 +381,11 @@ static int decode_fhandle3(struct xdr_stream *xdr, struct mountres *res) u32 size; __be32 *p; - p = xdr_inline_decode(xdr, sizeof(size)); + p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) return -EIO; - size = ntohl(*p++); + size = be32_to_cpup(p); if (size > NFS3_FHSIZE || size == 0) return -EIO; @@ -421,15 +408,15 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res) if (*count == 0) return 0; - p = xdr_inline_decode(xdr, sizeof(entries)); + p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) return -EIO; - entries = ntohl(*p); + entries = be32_to_cpup(p); dprintk("NFS: received %u auth flavors\n", entries); if (entries > NFS_MAX_SECFLAVORS) entries = NFS_MAX_SECFLAVORS; - p = xdr_inline_decode(xdr, sizeof(u32) * entries); + p = xdr_inline_decode(xdr, 4 * entries); if (unlikely(p == NULL)) return -EIO; @@ -437,7 +424,7 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res) entries = *count; for (i = 0; i < entries; i++) { - flavors[i] = ntohl(*p++); + flavors[i] = be32_to_cpup(p++); dprintk("NFS: auth flavor[%u]: %d\n", i, flavors[i]); } *count = i; @@ -445,30 +432,28 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res) return 0; } -static int mnt_dec_mountres3(struct rpc_rqst *req, __be32 *p, - struct mountres *res) +static int mnt_xdr_dec_mountres3(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct mountres *res) { - struct xdr_stream xdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - - status = decode_fhs_status(&xdr, res); + status = decode_fhs_status(xdr, res); if (unlikely(status != 0 || res->errno != 0)) return status; - status = decode_fhandle3(&xdr, res); + status = decode_fhandle3(xdr, res); if (unlikely(status != 0)) { res->errno = -EBADHANDLE; return 0; } - return decode_auth_flavors(&xdr, res); + return decode_auth_flavors(xdr, res); } static struct rpc_procinfo mnt_procedures[] = { [MOUNTPROC_MNT] = { .p_proc = MOUNTPROC_MNT, - .p_encode = (kxdrproc_t)mnt_enc_dirpath, - .p_decode = (kxdrproc_t)mnt_dec_mountres, + .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath, + .p_decode = (kxdrdproc_t)mnt_xdr_dec_mountres, .p_arglen = MNT_enc_dirpath_sz, .p_replen = MNT_dec_mountres_sz, .p_statidx = MOUNTPROC_MNT, @@ -476,7 +461,7 @@ static struct rpc_procinfo mnt_procedures[] = { }, [MOUNTPROC_UMNT] = { .p_proc = MOUNTPROC_UMNT, - .p_encode = (kxdrproc_t)mnt_enc_dirpath, + .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath, .p_arglen = MNT_enc_dirpath_sz, .p_statidx = MOUNTPROC_UMNT, .p_name = "UMOUNT", @@ -486,8 +471,8 @@ static struct rpc_procinfo mnt_procedures[] = { static struct rpc_procinfo mnt3_procedures[] = { [MOUNTPROC3_MNT] = { .p_proc = MOUNTPROC3_MNT, - .p_encode = (kxdrproc_t)mnt_enc_dirpath, - .p_decode = (kxdrproc_t)mnt_dec_mountres3, + .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath, + .p_decode = (kxdrdproc_t)mnt_xdr_dec_mountres3, .p_arglen = MNT_enc_dirpath_sz, .p_replen = MNT_dec_mountres3_sz, .p_statidx = MOUNTPROC3_MNT, @@ -495,7 +480,7 @@ static struct rpc_procinfo mnt3_procedures[] = { }, [MOUNTPROC3_UMNT] = { .p_proc = MOUNTPROC3_UMNT, - .p_encode = (kxdrproc_t)mnt_enc_dirpath, + .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath, .p_arglen = MNT_enc_dirpath_sz, .p_statidx = MOUNTPROC3_UMNT, .p_name = "UMOUNT", diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 5914a1911c95..51f1cfa04d27 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -61,584 +61,1013 @@ #define NFS_readdirres_sz (1) #define NFS_statfsres_sz (1+NFS_info_sz) + /* - * Common NFS XDR functions as inlines + * While encoding arguments, set up the reply buffer in advance to + * receive reply data directly into the page cache. */ -static inline __be32 * -xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fhandle) +static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages, + unsigned int base, unsigned int len, + unsigned int bufsize) { - memcpy(p, fhandle->data, NFS2_FHSIZE); - return p + XDR_QUADLEN(NFS2_FHSIZE); + struct rpc_auth *auth = req->rq_cred->cr_auth; + unsigned int replen; + + replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize; + xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len); } -static inline __be32 * -xdr_decode_fhandle(__be32 *p, struct nfs_fh *fhandle) +/* + * Handle decode buffer overflows out-of-line. + */ +static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) { - /* NFSv2 handles have a fixed length */ - fhandle->size = NFS2_FHSIZE; - memcpy(fhandle->data, p, NFS2_FHSIZE); - return p + XDR_QUADLEN(NFS2_FHSIZE); + dprintk("NFS: %s prematurely hit the end of our receive buffer. " + "Remaining buffer length is %tu words.\n", + func, xdr->end - xdr->p); +} + + +/* + * Encode/decode NFSv2 basic data types + * + * Basic NFSv2 data types are defined in section 2.3 of RFC 1094: + * "NFS: Network File System Protocol Specification". + * + * Not all basic data types have their own encoding and decoding + * functions. For run-time efficiency, some data types are encoded + * or decoded inline. + */ + +/* + * typedef opaque nfsdata<>; + */ +static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_readres *result) +{ + u32 recvd, count; + size_t hdrlen; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + count = be32_to_cpup(p); + hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; + recvd = xdr->buf->len - hdrlen; + if (unlikely(count > recvd)) + goto out_cheating; +out: + xdr_read_pages(xdr, count); + result->eof = 0; /* NFSv2 does not pass EOF flag on the wire. */ + result->count = count; + return count; +out_cheating: + dprintk("NFS: server cheating in read result: " + "count %u > recvd %u\n", count, recvd); + count = recvd; + goto out; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * enum stat { + * NFS_OK = 0, + * NFSERR_PERM = 1, + * NFSERR_NOENT = 2, + * NFSERR_IO = 5, + * NFSERR_NXIO = 6, + * NFSERR_ACCES = 13, + * NFSERR_EXIST = 17, + * NFSERR_NODEV = 19, + * NFSERR_NOTDIR = 20, + * NFSERR_ISDIR = 21, + * NFSERR_FBIG = 27, + * NFSERR_NOSPC = 28, + * NFSERR_ROFS = 30, + * NFSERR_NAMETOOLONG = 63, + * NFSERR_NOTEMPTY = 66, + * NFSERR_DQUOT = 69, + * NFSERR_STALE = 70, + * NFSERR_WFLUSH = 99 + * }; + */ +static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + *status = be32_to_cpup(p); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; } -static inline __be32* -xdr_encode_time(__be32 *p, struct timespec *timep) +/* + * 2.3.2. ftype + * + * enum ftype { + * NFNON = 0, + * NFREG = 1, + * NFDIR = 2, + * NFBLK = 3, + * NFCHR = 4, + * NFLNK = 5 + * }; + * + */ +static __be32 *xdr_decode_ftype(__be32 *p, u32 *type) { - *p++ = htonl(timep->tv_sec); - /* Convert nanoseconds into microseconds */ - *p++ = htonl(timep->tv_nsec ? timep->tv_nsec / 1000 : 0); + *type = be32_to_cpup(p++); + if (unlikely(*type > NF2FIFO)) + *type = NFBAD; return p; } -static inline __be32* -xdr_encode_current_server_time(__be32 *p, struct timespec *timep) +/* + * 2.3.3. fhandle + * + * typedef opaque fhandle[FHSIZE]; + */ +static void encode_fhandle(struct xdr_stream *xdr, const struct nfs_fh *fh) { - /* - * Passing the invalid value useconds=1000000 is a - * Sun convention for "set to current server time". - * It's needed to make permissions checks for the - * "touch" program across v2 mounts to Solaris and - * Irix boxes work correctly. See description of - * sattr in section 6.1 of "NFS Illustrated" by - * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5 - */ - *p++ = htonl(timep->tv_sec); - *p++ = htonl(1000000); + __be32 *p; + + BUG_ON(fh->size != NFS2_FHSIZE); + p = xdr_reserve_space(xdr, NFS2_FHSIZE); + memcpy(p, fh->data, NFS2_FHSIZE); +} + +static int decode_fhandle(struct xdr_stream *xdr, struct nfs_fh *fh) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, NFS2_FHSIZE); + if (unlikely(p == NULL)) + goto out_overflow; + fh->size = NFS2_FHSIZE; + memcpy(fh->data, p, NFS2_FHSIZE); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * 2.3.4. timeval + * + * struct timeval { + * unsigned int seconds; + * unsigned int useconds; + * }; + */ +static __be32 *xdr_encode_time(__be32 *p, const struct timespec *timep) +{ + *p++ = cpu_to_be32(timep->tv_sec); + if (timep->tv_nsec != 0) + *p++ = cpu_to_be32(timep->tv_nsec / NSEC_PER_USEC); + else + *p++ = cpu_to_be32(0); return p; } -static inline __be32* -xdr_decode_time(__be32 *p, struct timespec *timep) +/* + * Passing the invalid value useconds=1000000 is a Sun convention for + * "set to current server time". It's needed to make permissions checks + * for the "touch" program across v2 mounts to Solaris and Irix servers + * work correctly. See description of sattr in section 6.1 of "NFS + * Illustrated" by Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5. + */ +static __be32 *xdr_encode_current_server_time(__be32 *p, + const struct timespec *timep) { - timep->tv_sec = ntohl(*p++); - /* Convert microseconds into nanoseconds */ - timep->tv_nsec = ntohl(*p++) * 1000; + *p++ = cpu_to_be32(timep->tv_sec); + *p++ = cpu_to_be32(1000000); return p; } -static __be32 * -xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) +static __be32 *xdr_decode_time(__be32 *p, struct timespec *timep) +{ + timep->tv_sec = be32_to_cpup(p++); + timep->tv_nsec = be32_to_cpup(p++) * NSEC_PER_USEC; + return p; +} + +/* + * 2.3.5. fattr + * + * struct fattr { + * ftype type; + * unsigned int mode; + * unsigned int nlink; + * unsigned int uid; + * unsigned int gid; + * unsigned int size; + * unsigned int blocksize; + * unsigned int rdev; + * unsigned int blocks; + * unsigned int fsid; + * unsigned int fileid; + * timeval atime; + * timeval mtime; + * timeval ctime; + * }; + * + */ +static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr) { u32 rdev, type; - type = ntohl(*p++); - fattr->mode = ntohl(*p++); - fattr->nlink = ntohl(*p++); - fattr->uid = ntohl(*p++); - fattr->gid = ntohl(*p++); - fattr->size = ntohl(*p++); - fattr->du.nfs2.blocksize = ntohl(*p++); - rdev = ntohl(*p++); - fattr->du.nfs2.blocks = ntohl(*p++); - fattr->fsid.major = ntohl(*p++); - fattr->fsid.minor = 0; - fattr->fileid = ntohl(*p++); - p = xdr_decode_time(p, &fattr->atime); - p = xdr_decode_time(p, &fattr->mtime); - p = xdr_decode_time(p, &fattr->ctime); + __be32 *p; + + p = xdr_inline_decode(xdr, NFS_fattr_sz << 2); + if (unlikely(p == NULL)) + goto out_overflow; + fattr->valid |= NFS_ATTR_FATTR_V2; + + p = xdr_decode_ftype(p, &type); + + fattr->mode = be32_to_cpup(p++); + fattr->nlink = be32_to_cpup(p++); + fattr->uid = be32_to_cpup(p++); + fattr->gid = be32_to_cpup(p++); + fattr->size = be32_to_cpup(p++); + fattr->du.nfs2.blocksize = be32_to_cpup(p++); + + rdev = be32_to_cpup(p++); fattr->rdev = new_decode_dev(rdev); - if (type == NFCHR && rdev == NFS2_FIFO_DEV) { + if (type == (u32)NFCHR && rdev == (u32)NFS2_FIFO_DEV) { fattr->mode = (fattr->mode & ~S_IFMT) | S_IFIFO; fattr->rdev = 0; } + + fattr->du.nfs2.blocks = be32_to_cpup(p++); + fattr->fsid.major = be32_to_cpup(p++); + fattr->fsid.minor = 0; + fattr->fileid = be32_to_cpup(p++); + + p = xdr_decode_time(p, &fattr->atime); + p = xdr_decode_time(p, &fattr->mtime); + xdr_decode_time(p, &fattr->ctime); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * 2.3.6. sattr + * + * struct sattr { + * unsigned int mode; + * unsigned int uid; + * unsigned int gid; + * unsigned int size; + * timeval atime; + * timeval mtime; + * }; + */ + +#define NFS2_SATTR_NOT_SET (0xffffffff) + +static __be32 *xdr_time_not_set(__be32 *p) +{ + *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET); + *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET); return p; } -static inline __be32 * -xdr_encode_sattr(__be32 *p, struct iattr *attr) +static void encode_sattr(struct xdr_stream *xdr, const struct iattr *attr) { - const __be32 not_set = __constant_htonl(0xFFFFFFFF); + __be32 *p; - *p++ = (attr->ia_valid & ATTR_MODE) ? htonl(attr->ia_mode) : not_set; - *p++ = (attr->ia_valid & ATTR_UID) ? htonl(attr->ia_uid) : not_set; - *p++ = (attr->ia_valid & ATTR_GID) ? htonl(attr->ia_gid) : not_set; - *p++ = (attr->ia_valid & ATTR_SIZE) ? htonl(attr->ia_size) : not_set; + p = xdr_reserve_space(xdr, NFS_sattr_sz << 2); - if (attr->ia_valid & ATTR_ATIME_SET) { + if (attr->ia_valid & ATTR_MODE) + *p++ = cpu_to_be32(attr->ia_mode); + else + *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET); + if (attr->ia_valid & ATTR_UID) + *p++ = cpu_to_be32(attr->ia_uid); + else + *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET); + if (attr->ia_valid & ATTR_GID) + *p++ = cpu_to_be32(attr->ia_gid); + else + *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET); + if (attr->ia_valid & ATTR_SIZE) + *p++ = cpu_to_be32((u32)attr->ia_size); + else + *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET); + + if (attr->ia_valid & ATTR_ATIME_SET) p = xdr_encode_time(p, &attr->ia_atime); - } else if (attr->ia_valid & ATTR_ATIME) { + else if (attr->ia_valid & ATTR_ATIME) p = xdr_encode_current_server_time(p, &attr->ia_atime); - } else { - *p++ = not_set; - *p++ = not_set; - } - - if (attr->ia_valid & ATTR_MTIME_SET) { - p = xdr_encode_time(p, &attr->ia_mtime); - } else if (attr->ia_valid & ATTR_MTIME) { - p = xdr_encode_current_server_time(p, &attr->ia_mtime); - } else { - *p++ = not_set; - *p++ = not_set; - } - return p; + else + p = xdr_time_not_set(p); + if (attr->ia_valid & ATTR_MTIME_SET) + xdr_encode_time(p, &attr->ia_mtime); + else if (attr->ia_valid & ATTR_MTIME) + xdr_encode_current_server_time(p, &attr->ia_mtime); + else + xdr_time_not_set(p); } /* - * NFS encode functions + * 2.3.7. filename + * + * typedef string filename<MAXNAMLEN>; */ +static void encode_filename(struct xdr_stream *xdr, + const char *name, u32 length) +{ + __be32 *p; + + BUG_ON(length > NFS2_MAXNAMLEN); + p = xdr_reserve_space(xdr, 4 + length); + xdr_encode_opaque(p, name, length); +} + +static int decode_filename_inline(struct xdr_stream *xdr, + const char **name, u32 *length) +{ + __be32 *p; + u32 count; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + count = be32_to_cpup(p); + if (count > NFS3_MAXNAMLEN) + goto out_nametoolong; + p = xdr_inline_decode(xdr, count); + if (unlikely(p == NULL)) + goto out_overflow; + *name = (const char *)p; + *length = count; + return 0; +out_nametoolong: + dprintk("NFS: returned filename too long: %u\n", count); + return -ENAMETOOLONG; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + /* - * Encode file handle argument - * GETATTR, READLINK, STATFS + * 2.3.8. path + * + * typedef string path<MAXPATHLEN>; */ -static int -nfs_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) +static void encode_path(struct xdr_stream *xdr, struct page **pages, u32 length) { - p = xdr_encode_fhandle(p, fh); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + __be32 *p; + + BUG_ON(length > NFS2_MAXPATHLEN); + p = xdr_reserve_space(xdr, 4); + *p = cpu_to_be32(length); + xdr_write_pages(xdr, pages, 0, length); +} + +static int decode_path(struct xdr_stream *xdr) +{ + u32 length, recvd; + size_t hdrlen; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + length = be32_to_cpup(p); + if (unlikely(length >= xdr->buf->page_len || length > NFS_MAXPATHLEN)) + goto out_size; + hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; + recvd = xdr->buf->len - hdrlen; + if (unlikely(length > recvd)) + goto out_cheating; + + xdr_read_pages(xdr, length); + xdr_terminate_string(xdr->buf, length); return 0; +out_size: + dprintk("NFS: returned pathname too long: %u\n", length); + return -ENAMETOOLONG; +out_cheating: + dprintk("NFS: server cheating in pathname result: " + "length %u > received %u\n", length, recvd); + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; } /* - * Encode SETATTR arguments + * 2.3.9. attrstat + * + * union attrstat switch (stat status) { + * case NFS_OK: + * fattr attributes; + * default: + * void; + * }; */ -static int -nfs_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs_sattrargs *args) +static int decode_attrstat(struct xdr_stream *xdr, struct nfs_fattr *result) { - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_sattr(p, args->sattr); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + enum nfs_stat status; + int error; + + error = decode_stat(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS_OK) + goto out_default; + error = decode_fattr(xdr, result); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } /* - * Encode directory ops argument - * LOOKUP, RMDIR + * 2.3.10. diropargs + * + * struct diropargs { + * fhandle dir; + * filename name; + * }; */ -static int -nfs_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs_diropargs *args) +static void encode_diropargs(struct xdr_stream *xdr, const struct nfs_fh *fh, + const char *name, u32 length) { - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_array(p, args->name, args->len); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + encode_fhandle(xdr, fh); + encode_filename(xdr, name, length); } /* - * Encode REMOVE argument + * 2.3.11. diropres + * + * union diropres switch (stat status) { + * case NFS_OK: + * struct { + * fhandle file; + * fattr attributes; + * } diropok; + * default: + * void; + * }; */ -static int -nfs_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) +static int decode_diropok(struct xdr_stream *xdr, struct nfs_diropok *result) { - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_array(p, args->name.name, args->name.len); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + int error; + + error = decode_fhandle(xdr, result->fh); + if (unlikely(error)) + goto out; + error = decode_fattr(xdr, result->fattr); +out: + return error; +} + +static int decode_diropres(struct xdr_stream *xdr, struct nfs_diropok *result) +{ + enum nfs_stat status; + int error; + + error = decode_stat(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS_OK) + goto out_default; + error = decode_diropok(xdr, result); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } + /* - * Arguments to a READ call. Since we read data directly into the page - * cache, we also set up the reply iovec here so that iov[1] points - * exactly to the page we want to fetch. + * NFSv2 XDR encode functions + * + * NFSv2 argument types are defined in section 2.2 of RFC 1094: + * "NFS: Network File System Protocol Specification". */ -static int -nfs_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) + +static void nfs2_xdr_enc_fhandle(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_fh *fh) { - struct rpc_auth *auth = req->rq_cred->cr_auth; - unsigned int replen; - u32 offset = (u32)args->offset; + encode_fhandle(xdr, fh); +} + +/* + * 2.2.3. sattrargs + * + * struct sattrargs { + * fhandle file; + * sattr attributes; + * }; + */ +static void nfs2_xdr_enc_sattrargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_sattrargs *args) +{ + encode_fhandle(xdr, args->fh); + encode_sattr(xdr, args->sattr); +} + +static void nfs2_xdr_enc_diropargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_diropargs *args) +{ + encode_diropargs(xdr, args->fh, args->name, args->len); +} + +static void nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_readlinkargs *args) +{ + encode_fhandle(xdr, args->fh); + prepare_reply_buffer(req, args->pages, args->pgbase, + args->pglen, NFS_readlinkres_sz); +} + +/* + * 2.2.7. readargs + * + * struct readargs { + * fhandle file; + * unsigned offset; + * unsigned count; + * unsigned totalcount; + * }; + */ +static void encode_readargs(struct xdr_stream *xdr, + const struct nfs_readargs *args) +{ + u32 offset = args->offset; u32 count = args->count; + __be32 *p; - p = xdr_encode_fhandle(p, args->fh); - *p++ = htonl(offset); - *p++ = htonl(count); - *p++ = htonl(count); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + encode_fhandle(xdr, args->fh); - /* Inline the page array */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readres_sz) << 2; - xdr_inline_pages(&req->rq_rcv_buf, replen, - args->pages, args->pgbase, count); + p = xdr_reserve_space(xdr, 4 + 4 + 4); + *p++ = cpu_to_be32(offset); + *p++ = cpu_to_be32(count); + *p = cpu_to_be32(count); +} + +static void nfs2_xdr_enc_readargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_readargs *args) +{ + encode_readargs(xdr, args); + prepare_reply_buffer(req, args->pages, args->pgbase, + args->count, NFS_readres_sz); req->rq_rcv_buf.flags |= XDRBUF_READ; - return 0; } /* - * Decode READ reply + * 2.2.9. writeargs + * + * struct writeargs { + * fhandle file; + * unsigned beginoffset; + * unsigned offset; + * unsigned totalcount; + * nfsdata data; + * }; */ -static int -nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) +static void encode_writeargs(struct xdr_stream *xdr, + const struct nfs_writeargs *args) { - struct kvec *iov = req->rq_rcv_buf.head; - size_t hdrlen; - u32 count, recvd; - int status; - - if ((status = ntohl(*p++))) - return nfs_stat_to_errno(status); - p = xdr_decode_fattr(p, res->fattr); - - count = ntohl(*p++); - res->eof = 0; - hdrlen = (u8 *) p - (u8 *) iov->iov_base; - if (iov->iov_len < hdrlen) { - dprintk("NFS: READ reply header overflowed:" - "length %Zu > %Zu\n", hdrlen, iov->iov_len); - return -errno_NFSERR_IO; - } else if (iov->iov_len != hdrlen) { - dprintk("NFS: READ header is short. iovec will be shifted.\n"); - xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); - } + u32 offset = args->offset; + u32 count = args->count; + __be32 *p; - recvd = req->rq_rcv_buf.len - hdrlen; - if (count > recvd) { - dprintk("NFS: server cheating in read reply: " - "count %u > recvd %u\n", count, recvd); - count = recvd; - } + encode_fhandle(xdr, args->fh); - dprintk("RPC: readres OK count %u\n", count); - if (count < res->count) - res->count = count; + p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4); + *p++ = cpu_to_be32(offset); + *p++ = cpu_to_be32(offset); + *p++ = cpu_to_be32(count); - return count; + /* nfsdata */ + *p = cpu_to_be32(count); + xdr_write_pages(xdr, args->pages, args->pgbase, count); } +static void nfs2_xdr_enc_writeargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_writeargs *args) +{ + encode_writeargs(xdr, args); + xdr->buf->flags |= XDRBUF_WRITE; +} /* - * Write arguments. Splice the buffer to be written into the iovec. + * 2.2.10. createargs + * + * struct createargs { + * diropargs where; + * sattr attributes; + * }; */ -static int -nfs_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) +static void nfs2_xdr_enc_createargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_createargs *args) { - struct xdr_buf *sndbuf = &req->rq_snd_buf; - u32 offset = (u32)args->offset; - u32 count = args->count; - - p = xdr_encode_fhandle(p, args->fh); - *p++ = htonl(offset); - *p++ = htonl(offset); - *p++ = htonl(count); - *p++ = htonl(count); - sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); + encode_diropargs(xdr, args->fh, args->name, args->len); + encode_sattr(xdr, args->sattr); +} - /* Copy the page array */ - xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); - sndbuf->flags |= XDRBUF_WRITE; - return 0; +static void nfs2_xdr_enc_removeargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_removeargs *args) +{ + encode_diropargs(xdr, args->fh, args->name.name, args->name.len); } /* - * Encode create arguments - * CREATE, MKDIR + * 2.2.12. renameargs + * + * struct renameargs { + * diropargs from; + * diropargs to; + * }; */ -static int -nfs_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs_createargs *args) +static void nfs2_xdr_enc_renameargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_renameargs *args) { - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_array(p, args->name, args->len); - p = xdr_encode_sattr(p, args->sattr); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + const struct qstr *old = args->old_name; + const struct qstr *new = args->new_name; + + encode_diropargs(xdr, args->old_dir, old->name, old->len); + encode_diropargs(xdr, args->new_dir, new->name, new->len); } /* - * Encode RENAME arguments + * 2.2.13. linkargs + * + * struct linkargs { + * fhandle from; + * diropargs to; + * }; */ -static int -nfs_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args) +static void nfs2_xdr_enc_linkargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_linkargs *args) { - p = xdr_encode_fhandle(p, args->old_dir); - p = xdr_encode_array(p, args->old_name->name, args->old_name->len); - p = xdr_encode_fhandle(p, args->new_dir); - p = xdr_encode_array(p, args->new_name->name, args->new_name->len); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + encode_fhandle(xdr, args->fromfh); + encode_diropargs(xdr, args->tofh, args->toname, args->tolen); } /* - * Encode LINK arguments + * 2.2.14. symlinkargs + * + * struct symlinkargs { + * diropargs from; + * path to; + * sattr attributes; + * }; */ -static int -nfs_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs_linkargs *args) +static void nfs2_xdr_enc_symlinkargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_symlinkargs *args) { - p = xdr_encode_fhandle(p, args->fromfh); - p = xdr_encode_fhandle(p, args->tofh); - p = xdr_encode_array(p, args->toname, args->tolen); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + encode_diropargs(xdr, args->fromfh, args->fromname, args->fromlen); + encode_path(xdr, args->pages, args->pathlen); + encode_sattr(xdr, args->sattr); } /* - * Encode SYMLINK arguments + * 2.2.17. readdirargs + * + * struct readdirargs { + * fhandle dir; + * nfscookie cookie; + * unsigned count; + * }; */ -static int -nfs_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_symlinkargs *args) +static void encode_readdirargs(struct xdr_stream *xdr, + const struct nfs_readdirargs *args) { - struct xdr_buf *sndbuf = &req->rq_snd_buf; - size_t pad; + __be32 *p; - p = xdr_encode_fhandle(p, args->fromfh); - p = xdr_encode_array(p, args->fromname, args->fromlen); - *p++ = htonl(args->pathlen); - sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); + encode_fhandle(xdr, args->fh); - xdr_encode_pages(sndbuf, args->pages, 0, args->pathlen); + p = xdr_reserve_space(xdr, 4 + 4); + *p++ = cpu_to_be32(args->cookie); + *p = cpu_to_be32(args->count); +} - /* - * xdr_encode_pages may have added a few bytes to ensure the - * pathname ends on a 4-byte boundary. Start encoding the - * attributes after the pad bytes. - */ - pad = sndbuf->tail->iov_len; - if (pad > 0) - p++; - p = xdr_encode_sattr(p, args->sattr); - sndbuf->len += xdr_adjust_iovec(sndbuf->tail, p) - pad; - return 0; +static void nfs2_xdr_enc_readdirargs(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_readdirargs *args) +{ + encode_readdirargs(xdr, args); + prepare_reply_buffer(req, args->pages, 0, + args->count, NFS_readdirres_sz); } /* - * Encode arguments to readdir call + * NFSv2 XDR decode functions + * + * NFSv2 result types are defined in section 2.2 of RFC 1094: + * "NFS: Network File System Protocol Specification". */ -static int -nfs_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs_readdirargs *args) + +static int nfs2_xdr_dec_stat(struct rpc_rqst *req, struct xdr_stream *xdr, + void *__unused) { - struct rpc_auth *auth = req->rq_cred->cr_auth; - unsigned int replen; - u32 count = args->count; + enum nfs_stat status; + int error; + + error = decode_stat(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS_OK) + goto out_default; +out: + return error; +out_default: + return nfs_stat_to_errno(status); +} - p = xdr_encode_fhandle(p, args->fh); - *p++ = htonl(args->cookie); - *p++ = htonl(count); /* see above */ - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); +static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_fattr *result) +{ + return decode_attrstat(xdr, result); +} - /* Inline the page array */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readdirres_sz) << 2; - xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); - return 0; +static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_diropok *result) +{ + return decode_diropres(xdr, result); } /* - * Decode the result of a readdir call. - * We're not really decoding anymore, we just leave the buffer untouched - * and only check that it is syntactically correct. - * The real decoding happens in nfs_decode_entry below, called directly - * from nfs_readdir for each entry. + * 2.2.6. readlinkres + * + * union readlinkres switch (stat status) { + * case NFS_OK: + * path data; + * default: + * void; + * }; */ -static int -nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy) +static int nfs2_xdr_dec_readlinkres(struct rpc_rqst *req, + struct xdr_stream *xdr, void *__unused) { - struct xdr_buf *rcvbuf = &req->rq_rcv_buf; - struct kvec *iov = rcvbuf->head; - struct page **page; - size_t hdrlen; - unsigned int pglen, recvd; - int status; - - if ((status = ntohl(*p++))) - return nfs_stat_to_errno(status); - - hdrlen = (u8 *) p - (u8 *) iov->iov_base; - if (iov->iov_len < hdrlen) { - dprintk("NFS: READDIR reply header overflowed:" - "length %Zu > %Zu\n", hdrlen, iov->iov_len); - return -errno_NFSERR_IO; - } else if (iov->iov_len != hdrlen) { - dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); - xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); - } + enum nfs_stat status; + int error; + + error = decode_stat(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS_OK) + goto out_default; + error = decode_path(xdr); +out: + return error; +out_default: + return nfs_stat_to_errno(status); +} - pglen = rcvbuf->page_len; - recvd = rcvbuf->len - hdrlen; - if (pglen > recvd) - pglen = recvd; - page = rcvbuf->pages; - return pglen; +/* + * 2.2.7. readres + * + * union readres switch (stat status) { + * case NFS_OK: + * fattr attributes; + * nfsdata data; + * default: + * void; + * }; + */ +static int nfs2_xdr_dec_readres(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_readres *result) +{ + enum nfs_stat status; + int error; + + error = decode_stat(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS_OK) + goto out_default; + error = decode_fattr(xdr, result->fattr); + if (unlikely(error)) + goto out; + error = decode_nfsdata(xdr, result); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } -static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) +static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_writeres *result) { - dprintk("nfs: %s: prematurely hit end of receive buffer. " - "Remaining buffer length is %tu words.\n", - func, xdr->end - xdr->p); + /* All NFSv2 writes are "file sync" writes */ + result->verf->committed = NFS_FILE_SYNC; + return decode_attrstat(xdr, result->fattr); } -__be32 * -nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus) +/** + * nfs2_decode_dirent - Decode a single NFSv2 directory entry stored in + * the local page cache. + * @xdr: XDR stream where entry resides + * @entry: buffer to fill in with entry data + * @plus: boolean indicating whether this should be a readdirplus entry + * + * Returns zero if successful, otherwise a negative errno value is + * returned. + * + * This function is not invoked during READDIR reply decoding, but + * rather whenever an application invokes the getdents(2) system call + * on a directory already in our cache. + * + * 2.2.17. entry + * + * struct entry { + * unsigned fileid; + * filename name; + * nfscookie cookie; + * entry *nextentry; + * }; + */ +int nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, + int plus) { __be32 *p; + int error; + p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) + if (unlikely(p == NULL)) goto out_overflow; - if (!ntohl(*p++)) { + if (*p++ == xdr_zero) { p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) + if (unlikely(p == NULL)) goto out_overflow; - if (!ntohl(*p++)) - return ERR_PTR(-EAGAIN); + if (*p++ == xdr_zero) + return -EAGAIN; entry->eof = 1; - return ERR_PTR(-EBADCOOKIE); + return -EBADCOOKIE; } - p = xdr_inline_decode(xdr, 8); - if (unlikely(!p)) + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) goto out_overflow; + entry->ino = be32_to_cpup(p); - entry->ino = ntohl(*p++); - entry->len = ntohl(*p++); + error = decode_filename_inline(xdr, &entry->name, &entry->len); + if (unlikely(error)) + return error; - p = xdr_inline_decode(xdr, entry->len + 4); - if (unlikely(!p)) + /* + * The type (size and byte order) of nfscookie isn't defined in + * RFC 1094. This implementation assumes that it's an XDR uint32. + */ + entry->prev_cookie = entry->cookie; + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) goto out_overflow; - entry->name = (const char *) p; - p += XDR_QUADLEN(entry->len); - entry->prev_cookie = entry->cookie; - entry->cookie = ntohl(*p++); + entry->cookie = be32_to_cpup(p); entry->d_type = DT_UNKNOWN; - p = xdr_inline_peek(xdr, 8); + /* Peek at the next entry to see if we're at EOD */ + p = xdr_inline_peek(xdr, 4 + 4); + entry->eof = 0; if (p != NULL) - entry->eof = !p[0] && p[1]; - else - entry->eof = 0; - - return p; + entry->eof = (p[0] == xdr_zero) && (p[1] != xdr_zero); + return 0; out_overflow: print_overflow_msg(__func__, xdr); - return ERR_PTR(-EAGAIN); -} - -/* - * NFS XDR decode functions - */ -/* - * Decode simple status reply - */ -static int -nfs_xdr_stat(struct rpc_rqst *req, __be32 *p, void *dummy) -{ - int status; - - if ((status = ntohl(*p++)) != 0) - status = nfs_stat_to_errno(status); - return status; + return -EAGAIN; } /* - * Decode attrstat reply - * GETATTR, SETATTR, WRITE - */ -static int -nfs_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) -{ - int status; - - if ((status = ntohl(*p++))) - return nfs_stat_to_errno(status); - xdr_decode_fattr(p, fattr); - return 0; -} - -/* - * Decode diropres reply - * LOOKUP, CREATE, MKDIR + * 2.2.17. readdirres + * + * union readdirres switch (stat status) { + * case NFS_OK: + * struct { + * entry *entries; + * bool eof; + * } readdirok; + * default: + * void; + * }; + * + * Read the directory contents into the page cache, but don't + * touch them. The actual decoding is done by nfs2_decode_dirent() + * during subsequent nfs_readdir() calls. */ -static int -nfs_xdr_diropres(struct rpc_rqst *req, __be32 *p, struct nfs_diropok *res) +static int decode_readdirok(struct xdr_stream *xdr) { - int status; + u32 recvd, pglen; + size_t hdrlen; - if ((status = ntohl(*p++))) - return nfs_stat_to_errno(status); - p = xdr_decode_fhandle(p, res->fh); - xdr_decode_fattr(p, res->fattr); - return 0; + pglen = xdr->buf->page_len; + hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; + recvd = xdr->buf->len - hdrlen; + if (unlikely(pglen > recvd)) + goto out_cheating; +out: + xdr_read_pages(xdr, pglen); + return pglen; +out_cheating: + dprintk("NFS: server cheating in readdir result: " + "pglen %u > recvd %u\n", pglen, recvd); + pglen = recvd; + goto out; } -/* - * Encode READLINK args - */ -static int -nfs_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_readlinkargs *args) +static int nfs2_xdr_dec_readdirres(struct rpc_rqst *req, + struct xdr_stream *xdr, void *__unused) { - struct rpc_auth *auth = req->rq_cred->cr_auth; - unsigned int replen; - - p = xdr_encode_fhandle(p, args->fh); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - - /* Inline the page array */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readlinkres_sz) << 2; - xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); - return 0; + enum nfs_stat status; + int error; + + error = decode_stat(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS_OK) + goto out_default; + error = decode_readdirok(xdr); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } /* - * Decode READLINK reply + * 2.2.18. statfsres + * + * union statfsres (stat status) { + * case NFS_OK: + * struct { + * unsigned tsize; + * unsigned bsize; + * unsigned blocks; + * unsigned bfree; + * unsigned bavail; + * } info; + * default: + * void; + * }; */ -static int -nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy) +static int decode_info(struct xdr_stream *xdr, struct nfs2_fsstat *result) { - struct xdr_buf *rcvbuf = &req->rq_rcv_buf; - struct kvec *iov = rcvbuf->head; - size_t hdrlen; - u32 len, recvd; - int status; - - if ((status = ntohl(*p++))) - return nfs_stat_to_errno(status); - /* Convert length of symlink */ - len = ntohl(*p++); - if (len >= rcvbuf->page_len) { - dprintk("nfs: server returned giant symlink!\n"); - return -ENAMETOOLONG; - } - hdrlen = (u8 *) p - (u8 *) iov->iov_base; - if (iov->iov_len < hdrlen) { - dprintk("NFS: READLINK reply header overflowed:" - "length %Zu > %Zu\n", hdrlen, iov->iov_len); - return -errno_NFSERR_IO; - } else if (iov->iov_len != hdrlen) { - dprintk("NFS: READLINK header is short. iovec will be shifted.\n"); - xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); - } - recvd = req->rq_rcv_buf.len - hdrlen; - if (recvd < len) { - dprintk("NFS: server cheating in readlink reply: " - "count %u > recvd %u\n", len, recvd); - return -EIO; - } + __be32 *p; - xdr_terminate_string(rcvbuf, len); + p = xdr_inline_decode(xdr, NFS_info_sz << 2); + if (unlikely(p == NULL)) + goto out_overflow; + result->tsize = be32_to_cpup(p++); + result->bsize = be32_to_cpup(p++); + result->blocks = be32_to_cpup(p++); + result->bfree = be32_to_cpup(p++); + result->bavail = be32_to_cpup(p); return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; } -/* - * Decode WRITE reply - */ -static int -nfs_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) +static int nfs2_xdr_dec_statfsres(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs2_fsstat *result) { - res->verf->committed = NFS_FILE_SYNC; - return nfs_xdr_attrstat(req, p, res->fattr); + enum nfs_stat status; + int error; + + error = decode_stat(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS_OK) + goto out_default; + error = decode_info(xdr, result); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } -/* - * Decode STATFS reply - */ -static int -nfs_xdr_statfsres(struct rpc_rqst *req, __be32 *p, struct nfs2_fsstat *res) -{ - int status; - - if ((status = ntohl(*p++))) - return nfs_stat_to_errno(status); - - res->tsize = ntohl(*p++); - res->bsize = ntohl(*p++); - res->blocks = ntohl(*p++); - res->bfree = ntohl(*p++); - res->bavail = ntohl(*p++); - return 0; -} /* * We need to translate between nfs status return values and * the local errno values which may not be the same. */ -static struct { +static const struct { int stat; int errno; } nfs_errtbl[] = { @@ -678,28 +1107,30 @@ static struct { { -1, -EIO } }; -/* - * Convert an NFS error code to a local one. - * This one is used jointly by NFSv2 and NFSv3. +/** + * nfs_stat_to_errno - convert an NFS status code to a local errno + * @status: NFS status code to convert + * + * Returns a local errno value, or -EIO if the NFS status code is + * not recognized. This function is used jointly by NFSv2 and NFSv3. */ -int -nfs_stat_to_errno(int stat) +int nfs_stat_to_errno(enum nfs_stat status) { int i; for (i = 0; nfs_errtbl[i].stat != -1; i++) { - if (nfs_errtbl[i].stat == stat) + if (nfs_errtbl[i].stat == (int)status) return nfs_errtbl[i].errno; } - dprintk("nfs_stat_to_errno: bad nfs status return value: %d\n", stat); + dprintk("NFS: Unrecognized nfs status value: %u\n", status); return nfs_errtbl[i].errno; } #define PROC(proc, argtype, restype, timer) \ [NFSPROC_##proc] = { \ .p_proc = NFSPROC_##proc, \ - .p_encode = (kxdrproc_t) nfs_xdr_##argtype, \ - .p_decode = (kxdrproc_t) nfs_xdr_##restype, \ + .p_encode = (kxdreproc_t)nfs2_xdr_enc_##argtype, \ + .p_decode = (kxdrdproc_t)nfs2_xdr_dec_##restype, \ .p_arglen = NFS_##argtype##_sz, \ .p_replen = NFS_##restype##_sz, \ .p_timer = timer, \ @@ -707,21 +1138,21 @@ nfs_stat_to_errno(int stat) .p_name = #proc, \ } struct rpc_procinfo nfs_procedures[] = { - PROC(GETATTR, fhandle, attrstat, 1), - PROC(SETATTR, sattrargs, attrstat, 0), - PROC(LOOKUP, diropargs, diropres, 2), - PROC(READLINK, readlinkargs, readlinkres, 3), - PROC(READ, readargs, readres, 3), - PROC(WRITE, writeargs, writeres, 4), - PROC(CREATE, createargs, diropres, 0), - PROC(REMOVE, removeargs, stat, 0), - PROC(RENAME, renameargs, stat, 0), - PROC(LINK, linkargs, stat, 0), - PROC(SYMLINK, symlinkargs, stat, 0), - PROC(MKDIR, createargs, diropres, 0), - PROC(RMDIR, diropargs, stat, 0), - PROC(READDIR, readdirargs, readdirres, 3), - PROC(STATFS, fhandle, statfsres, 0), + PROC(GETATTR, fhandle, attrstat, 1), + PROC(SETATTR, sattrargs, attrstat, 0), + PROC(LOOKUP, diropargs, diropres, 2), + PROC(READLINK, readlinkargs, readlinkres, 3), + PROC(READ, readargs, readres, 3), + PROC(WRITE, writeargs, writeres, 4), + PROC(CREATE, createargs, diropres, 0), + PROC(REMOVE, removeargs, stat, 0), + PROC(RENAME, renameargs, stat, 0), + PROC(LINK, linkargs, stat, 0), + PROC(SYMLINK, symlinkargs, stat, 0), + PROC(MKDIR, createargs, diropres, 0), + PROC(RMDIR, diropargs, stat, 0), + PROC(READDIR, readdirargs, readdirres, 3), + PROC(STATFS, fhandle, statfsres, 0), }; struct rpc_version nfs_version2 = { diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index f6cc60f06dac..df30a26cc4fa 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -37,18 +37,16 @@ #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) #define NFS3_fattr_sz (21) -#define NFS3_wcc_attr_sz (6) +#define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2) +#define NFS3_wcc_attr_sz (6) #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) -#define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) -#define NFS3_fsstat_sz -#define NFS3_fsinfo_sz -#define NFS3_pathconf_sz -#define NFS3_entry_sz (NFS3_filename_sz+3) - -#define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) +#define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) -#define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) + +#define NFS3_getattrargs_sz (NFS3_fh_sz) +#define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) +#define NFS3_lookupargs_sz (NFS3_fh_sz+NFS3_filename_sz) #define NFS3_accessargs_sz (NFS3_fh_sz+1) #define NFS3_readlinkargs_sz (NFS3_fh_sz) #define NFS3_readargs_sz (NFS3_fh_sz+3) @@ -57,14 +55,16 @@ #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) +#define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) -#define NFS3_readdirargs_sz (NFS3_fh_sz+2) +#define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3) +#define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4) #define NFS3_commitargs_sz (NFS3_fh_sz+3) -#define NFS3_attrstat_sz (1+NFS3_fattr_sz) -#define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) -#define NFS3_removeres_sz (NFS3_wccstat_sz) +#define NFS3_getattrres_sz (1+NFS3_fattr_sz) +#define NFS3_setattrres_sz (1+NFS3_wcc_data_sz) +#define NFS3_removeres_sz (NFS3_setattrres_sz) #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) @@ -100,1079 +100,2367 @@ static const umode_t nfs_type2fmt[] = { [NF3FIFO] = S_IFIFO, }; +/* + * While encoding arguments, set up the reply buffer in advance to + * receive reply data directly into the page cache. + */ +static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages, + unsigned int base, unsigned int len, + unsigned int bufsize) +{ + struct rpc_auth *auth = req->rq_cred->cr_auth; + unsigned int replen; + + replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize; + xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len); +} + +/* + * Handle decode buffer overflows out-of-line. + */ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) { - dprintk("nfs: %s: prematurely hit end of receive buffer. " + dprintk("NFS: %s prematurely hit the end of our receive buffer. " "Remaining buffer length is %tu words.\n", func, xdr->end - xdr->p); } + /* - * Common NFS XDR functions as inlines + * Encode/decode NFSv3 basic data types + * + * Basic NFSv3 data types are defined in section 2.5 of RFC 1813: + * "NFS Version 3 Protocol Specification". + * + * Not all basic data types have their own encoding and decoding + * functions. For run-time efficiency, some data types are encoded + * or decoded inline. */ -static inline __be32 * -xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) + +static void encode_uint32(struct xdr_stream *xdr, u32 value) { - return xdr_encode_array(p, fh->data, fh->size); + __be32 *p = xdr_reserve_space(xdr, 4); + *p = cpu_to_be32(value); } -static inline __be32 * -xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) +static int decode_uint32(struct xdr_stream *xdr, u32 *value) { - if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { - memcpy(fh->data, p, fh->size); - return p + XDR_QUADLEN(fh->size); - } - return NULL; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + *value = be32_to_cpup(p); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; } -static inline __be32 * -xdr_decode_fhandle_stream(struct xdr_stream *xdr, struct nfs_fh *fh) +static int decode_uint64(struct xdr_stream *xdr, u64 *value) { __be32 *p; + + p = xdr_inline_decode(xdr, 8); + if (unlikely(p == NULL)) + goto out_overflow; + xdr_decode_hyper(p, value); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * fileid3 + * + * typedef uint64 fileid3; + */ +static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid) +{ + return xdr_decode_hyper(p, fileid); +} + +static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid) +{ + return decode_uint64(xdr, fileid); +} + +/* + * filename3 + * + * typedef string filename3<>; + */ +static void encode_filename3(struct xdr_stream *xdr, + const char *name, u32 length) +{ + __be32 *p; + + BUG_ON(length > NFS3_MAXNAMLEN); + p = xdr_reserve_space(xdr, 4 + length); + xdr_encode_opaque(p, name, length); +} + +static int decode_inline_filename3(struct xdr_stream *xdr, + const char **name, u32 *length) +{ + __be32 *p; + u32 count; + p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) + if (unlikely(p == NULL)) goto out_overflow; - fh->size = ntohl(*p++); + count = be32_to_cpup(p); + if (count > NFS3_MAXNAMLEN) + goto out_nametoolong; + p = xdr_inline_decode(xdr, count); + if (unlikely(p == NULL)) + goto out_overflow; + *name = (const char *)p; + *length = count; + return 0; - if (fh->size <= NFS3_FHSIZE) { - p = xdr_inline_decode(xdr, fh->size); - if (unlikely(!p)) - goto out_overflow; - memcpy(fh->data, p, fh->size); - return p + XDR_QUADLEN(fh->size); - } - return NULL; +out_nametoolong: + dprintk("NFS: returned filename too long: %u\n", count); + return -ENAMETOOLONG; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} +/* + * nfspath3 + * + * typedef string nfspath3<>; + */ +static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages, + const u32 length) +{ + BUG_ON(length > NFS3_MAXPATHLEN); + encode_uint32(xdr, length); + xdr_write_pages(xdr, pages, 0, length); +} + +static int decode_nfspath3(struct xdr_stream *xdr) +{ + u32 recvd, count; + size_t hdrlen; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + count = be32_to_cpup(p); + if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN)) + goto out_nametoolong; + hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; + recvd = xdr->buf->len - hdrlen; + if (unlikely(count > recvd)) + goto out_cheating; + + xdr_read_pages(xdr, count); + xdr_terminate_string(xdr->buf, count); + return 0; + +out_nametoolong: + dprintk("NFS: returned pathname too long: %u\n", count); + return -ENAMETOOLONG; +out_cheating: + dprintk("NFS: server cheating in pathname result: " + "count %u > recvd %u\n", count, recvd); + return -EIO; out_overflow: print_overflow_msg(__func__, xdr); - return ERR_PTR(-EIO); + return -EIO; } /* - * Encode/decode time. + * cookie3 + * + * typedef uint64 cookie3 */ -static inline __be32 * -xdr_encode_time3(__be32 *p, struct timespec *timep) +static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie) { - *p++ = htonl(timep->tv_sec); - *p++ = htonl(timep->tv_nsec); - return p; + return xdr_encode_hyper(p, cookie); } -static inline __be32 * -xdr_decode_time3(__be32 *p, struct timespec *timep) +static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie) { - timep->tv_sec = ntohl(*p++); - timep->tv_nsec = ntohl(*p++); - return p; + return decode_uint64(xdr, cookie); } -static __be32 * -xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) +/* + * cookieverf3 + * + * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE]; + */ +static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier) +{ + memcpy(p, verifier, NFS3_COOKIEVERFSIZE); + return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE); +} + +static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE); + if (unlikely(p == NULL)) + goto out_overflow; + memcpy(verifier, p, NFS3_COOKIEVERFSIZE); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * createverf3 + * + * typedef opaque createverf3[NFS3_CREATEVERFSIZE]; + */ +static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier) +{ + __be32 *p; + + p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE); + memcpy(p, verifier, NFS3_CREATEVERFSIZE); +} + +static int decode_writeverf3(struct xdr_stream *xdr, __be32 *verifier) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE); + if (unlikely(p == NULL)) + goto out_overflow; + memcpy(verifier, p, NFS3_WRITEVERFSIZE); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * size3 + * + * typedef uint64 size3; + */ +static __be32 *xdr_decode_size3(__be32 *p, u64 *size) +{ + return xdr_decode_hyper(p, size); +} + +/* + * nfsstat3 + * + * enum nfsstat3 { + * NFS3_OK = 0, + * ... + * } + */ +#define NFS3_OK NFS_OK + +static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + *status = be32_to_cpup(p); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * ftype3 + * + * enum ftype3 { + * NF3REG = 1, + * NF3DIR = 2, + * NF3BLK = 3, + * NF3CHR = 4, + * NF3LNK = 5, + * NF3SOCK = 6, + * NF3FIFO = 7 + * }; + */ +static void encode_ftype3(struct xdr_stream *xdr, const u32 type) +{ + BUG_ON(type > NF3FIFO); + encode_uint32(xdr, type); +} + +static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode) { - unsigned int type, major, minor; - umode_t fmode; + u32 type; - type = ntohl(*p++); + type = be32_to_cpup(p++); if (type > NF3FIFO) type = NF3NON; - fmode = nfs_type2fmt[type]; - fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; - fattr->nlink = ntohl(*p++); - fattr->uid = ntohl(*p++); - fattr->gid = ntohl(*p++); - p = xdr_decode_hyper(p, &fattr->size); - p = xdr_decode_hyper(p, &fattr->du.nfs3.used); - - /* Turn remote device info into Linux-specific dev_t */ - major = ntohl(*p++); - minor = ntohl(*p++); - fattr->rdev = MKDEV(major, minor); - if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) - fattr->rdev = 0; + *mode = nfs_type2fmt[type]; + return p; +} - p = xdr_decode_hyper(p, &fattr->fsid.major); - fattr->fsid.minor = 0; - p = xdr_decode_hyper(p, &fattr->fileid); - p = xdr_decode_time3(p, &fattr->atime); - p = xdr_decode_time3(p, &fattr->mtime); - p = xdr_decode_time3(p, &fattr->ctime); +/* + * specdata3 + * + * struct specdata3 { + * uint32 specdata1; + * uint32 specdata2; + * }; + */ +static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev) +{ + __be32 *p; - /* Update the mode bits */ - fattr->valid |= NFS_ATTR_FATTR_V3; + p = xdr_reserve_space(xdr, 8); + *p++ = cpu_to_be32(MAJOR(rdev)); + *p = cpu_to_be32(MINOR(rdev)); +} + +static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev) +{ + unsigned int major, minor; + + major = be32_to_cpup(p++); + minor = be32_to_cpup(p++); + *rdev = MKDEV(major, minor); + if (MAJOR(*rdev) != major || MINOR(*rdev) != minor) + *rdev = 0; return p; } -static inline __be32 * -xdr_encode_sattr(__be32 *p, struct iattr *attr) +/* + * nfs_fh3 + * + * struct nfs_fh3 { + * opaque data<NFS3_FHSIZE>; + * }; + */ +static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh) +{ + __be32 *p; + + BUG_ON(fh->size > NFS3_FHSIZE); + p = xdr_reserve_space(xdr, 4 + fh->size); + xdr_encode_opaque(p, fh->data, fh->size); +} + +static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) { + u32 length; + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + length = be32_to_cpup(p++); + if (unlikely(length > NFS3_FHSIZE)) + goto out_toobig; + p = xdr_inline_decode(xdr, length); + if (unlikely(p == NULL)) + goto out_overflow; + fh->size = length; + memcpy(fh->data, p, length); + return 0; +out_toobig: + dprintk("NFS: file handle size (%u) too big\n", length); + return -E2BIG; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +static void zero_nfs_fh3(struct nfs_fh *fh) +{ + memset(fh, 0, sizeof(*fh)); +} + +/* + * nfstime3 + * + * struct nfstime3 { + * uint32 seconds; + * uint32 nseconds; + * }; + */ +static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep) +{ + *p++ = cpu_to_be32(timep->tv_sec); + *p++ = cpu_to_be32(timep->tv_nsec); + return p; +} + +static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep) +{ + timep->tv_sec = be32_to_cpup(p++); + timep->tv_nsec = be32_to_cpup(p++); + return p; +} + +/* + * sattr3 + * + * enum time_how { + * DONT_CHANGE = 0, + * SET_TO_SERVER_TIME = 1, + * SET_TO_CLIENT_TIME = 2 + * }; + * + * union set_mode3 switch (bool set_it) { + * case TRUE: + * mode3 mode; + * default: + * void; + * }; + * + * union set_uid3 switch (bool set_it) { + * case TRUE: + * uid3 uid; + * default: + * void; + * }; + * + * union set_gid3 switch (bool set_it) { + * case TRUE: + * gid3 gid; + * default: + * void; + * }; + * + * union set_size3 switch (bool set_it) { + * case TRUE: + * size3 size; + * default: + * void; + * }; + * + * union set_atime switch (time_how set_it) { + * case SET_TO_CLIENT_TIME: + * nfstime3 atime; + * default: + * void; + * }; + * + * union set_mtime switch (time_how set_it) { + * case SET_TO_CLIENT_TIME: + * nfstime3 mtime; + * default: + * void; + * }; + * + * struct sattr3 { + * set_mode3 mode; + * set_uid3 uid; + * set_gid3 gid; + * set_size3 size; + * set_atime atime; + * set_mtime mtime; + * }; + */ +static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr) +{ + u32 nbytes; + __be32 *p; + + /* + * In order to make only a single xdr_reserve_space() call, + * pre-compute the total number of bytes to be reserved. + * Six boolean values, one for each set_foo field, are always + * present in the encoded result, so start there. + */ + nbytes = 6 * 4; + if (attr->ia_valid & ATTR_MODE) + nbytes += 4; + if (attr->ia_valid & ATTR_UID) + nbytes += 4; + if (attr->ia_valid & ATTR_GID) + nbytes += 4; + if (attr->ia_valid & ATTR_SIZE) + nbytes += 8; + if (attr->ia_valid & ATTR_ATIME_SET) + nbytes += 8; + if (attr->ia_valid & ATTR_MTIME_SET) + nbytes += 8; + p = xdr_reserve_space(xdr, nbytes); + if (attr->ia_valid & ATTR_MODE) { *p++ = xdr_one; - *p++ = htonl(attr->ia_mode & S_IALLUGO); - } else { + *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO); + } else *p++ = xdr_zero; - } + if (attr->ia_valid & ATTR_UID) { *p++ = xdr_one; - *p++ = htonl(attr->ia_uid); - } else { + *p++ = cpu_to_be32(attr->ia_uid); + } else *p++ = xdr_zero; - } + if (attr->ia_valid & ATTR_GID) { *p++ = xdr_one; - *p++ = htonl(attr->ia_gid); - } else { + *p++ = cpu_to_be32(attr->ia_gid); + } else *p++ = xdr_zero; - } + if (attr->ia_valid & ATTR_SIZE) { *p++ = xdr_one; - p = xdr_encode_hyper(p, (__u64) attr->ia_size); - } else { + p = xdr_encode_hyper(p, (u64)attr->ia_size); + } else *p++ = xdr_zero; - } + if (attr->ia_valid & ATTR_ATIME_SET) { *p++ = xdr_two; - p = xdr_encode_time3(p, &attr->ia_atime); + p = xdr_encode_nfstime3(p, &attr->ia_atime); } else if (attr->ia_valid & ATTR_ATIME) { *p++ = xdr_one; - } else { + } else *p++ = xdr_zero; - } + if (attr->ia_valid & ATTR_MTIME_SET) { *p++ = xdr_two; - p = xdr_encode_time3(p, &attr->ia_mtime); + xdr_encode_nfstime3(p, &attr->ia_mtime); } else if (attr->ia_valid & ATTR_MTIME) { - *p++ = xdr_one; - } else { - *p++ = xdr_zero; - } - return p; + *p = xdr_one; + } else + *p = xdr_zero; +} + +/* + * fattr3 + * + * struct fattr3 { + * ftype3 type; + * mode3 mode; + * uint32 nlink; + * uid3 uid; + * gid3 gid; + * size3 size; + * size3 used; + * specdata3 rdev; + * uint64 fsid; + * fileid3 fileid; + * nfstime3 atime; + * nfstime3 mtime; + * nfstime3 ctime; + * }; + */ +static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr) +{ + umode_t fmode; + __be32 *p; + + p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2); + if (unlikely(p == NULL)) + goto out_overflow; + + p = xdr_decode_ftype3(p, &fmode); + + fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode; + fattr->nlink = be32_to_cpup(p++); + fattr->uid = be32_to_cpup(p++); + fattr->gid = be32_to_cpup(p++); + + p = xdr_decode_size3(p, &fattr->size); + p = xdr_decode_size3(p, &fattr->du.nfs3.used); + p = xdr_decode_specdata3(p, &fattr->rdev); + + p = xdr_decode_hyper(p, &fattr->fsid.major); + fattr->fsid.minor = 0; + + p = xdr_decode_fileid3(p, &fattr->fileid); + p = xdr_decode_nfstime3(p, &fattr->atime); + p = xdr_decode_nfstime3(p, &fattr->mtime); + xdr_decode_nfstime3(p, &fattr->ctime); + + fattr->valid |= NFS_ATTR_FATTR_V3; + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; } -static inline __be32 * -xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) +/* + * post_op_attr + * + * union post_op_attr switch (bool attributes_follow) { + * case TRUE: + * fattr3 attributes; + * case FALSE: + * void; + * }; + */ +static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) { - p = xdr_decode_hyper(p, &fattr->pre_size); - p = xdr_decode_time3(p, &fattr->pre_mtime); - p = xdr_decode_time3(p, &fattr->pre_ctime); + __be32 *p; + + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + if (*p != xdr_zero) + return decode_fattr3(xdr, fattr); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +/* + * wcc_attr + * struct wcc_attr { + * size3 size; + * nfstime3 mtime; + * nfstime3 ctime; + * }; + */ +static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) +{ + __be32 *p; + + p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2); + if (unlikely(p == NULL)) + goto out_overflow; + fattr->valid |= NFS_ATTR_FATTR_PRESIZE | NFS_ATTR_FATTR_PREMTIME | NFS_ATTR_FATTR_PRECTIME; - return p; -} -static inline __be32 * -xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) -{ - if (*p++) - p = xdr_decode_fattr(p, fattr); - return p; + p = xdr_decode_size3(p, &fattr->pre_size); + p = xdr_decode_nfstime3(p, &fattr->pre_mtime); + xdr_decode_nfstime3(p, &fattr->pre_ctime); + + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; } -static inline __be32 * -xdr_decode_post_op_attr_stream(struct xdr_stream *xdr, struct nfs_fattr *fattr) +/* + * pre_op_attr + * union pre_op_attr switch (bool attributes_follow) { + * case TRUE: + * wcc_attr attributes; + * case FALSE: + * void; + * }; + * + * wcc_data + * + * struct wcc_data { + * pre_op_attr before; + * post_op_attr after; + * }; + */ +static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) { __be32 *p; p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) + if (unlikely(p == NULL)) goto out_overflow; - if (ntohl(*p++)) { - p = xdr_inline_decode(xdr, 84); - if (unlikely(!p)) - goto out_overflow; - p = xdr_decode_fattr(p, fattr); - } - return p; + if (*p != xdr_zero) + return decode_wcc_attr(xdr, fattr); + return 0; out_overflow: print_overflow_msg(__func__, xdr); - return ERR_PTR(-EIO); + return -EIO; } -static inline __be32 * -xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) +static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr) { - if (*p++) - return xdr_decode_wcc_attr(p, fattr); - return p; + int error; + + error = decode_pre_op_attr(xdr, fattr); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, fattr); +out: + return error; } +/* + * post_op_fh3 + * + * union post_op_fh3 switch (bool handle_follows) { + * case TRUE: + * nfs_fh3 handle; + * case FALSE: + * void; + * }; + */ +static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) +{ + __be32 *p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + if (*p != xdr_zero) + return decode_nfs_fh3(xdr, fh); + zero_nfs_fh3(fh); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} -static inline __be32 * -xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) +/* + * diropargs3 + * + * struct diropargs3 { + * nfs_fh3 dir; + * filename3 name; + * }; + */ +static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, + const char *name, u32 length) { - p = xdr_decode_pre_op_attr(p, fattr); - return xdr_decode_post_op_attr(p, fattr); + encode_nfs_fh3(xdr, fh); + encode_filename3(xdr, name, length); } + /* - * NFS encode functions + * NFSv3 XDR encode functions + * + * NFSv3 argument types are defined in section 3.3 of RFC 1813: + * "NFS Version 3 Protocol Specification". */ /* - * Encode file handle argument + * 3.3.1 GETATTR3args + * + * struct GETATTR3args { + * nfs_fh3 object; + * }; */ -static int -nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) +static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_fh *fh) { - p = xdr_encode_fhandle(p, fh); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + encode_nfs_fh3(xdr, fh); } /* - * Encode SETATTR arguments + * 3.3.2 SETATTR3args + * + * union sattrguard3 switch (bool check) { + * case TRUE: + * nfstime3 obj_ctime; + * case FALSE: + * void; + * }; + * + * struct SETATTR3args { + * nfs_fh3 object; + * sattr3 new_attributes; + * sattrguard3 guard; + * }; */ -static int -nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) -{ - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_sattr(p, args->sattr); - *p++ = htonl(args->guard); - if (args->guard) - p = xdr_encode_time3(p, &args->guardtime); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; +static void encode_sattrguard3(struct xdr_stream *xdr, + const struct nfs3_sattrargs *args) +{ + __be32 *p; + + if (args->guard) { + p = xdr_reserve_space(xdr, 4 + 8); + *p++ = xdr_one; + xdr_encode_nfstime3(p, &args->guardtime); + } else { + p = xdr_reserve_space(xdr, 4); + *p = xdr_zero; + } +} + +static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_sattrargs *args) +{ + encode_nfs_fh3(xdr, args->fh); + encode_sattr3(xdr, args->sattr); + encode_sattrguard3(xdr, args); } /* - * Encode directory ops argument + * 3.3.3 LOOKUP3args + * + * struct LOOKUP3args { + * diropargs3 what; + * }; */ -static int -nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) +static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_diropargs *args) { - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_array(p, args->name, args->len); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + encode_diropargs3(xdr, args->fh, args->name, args->len); } /* - * Encode REMOVE argument + * 3.3.4 ACCESS3args + * + * struct ACCESS3args { + * nfs_fh3 object; + * uint32 access; + * }; */ -static int -nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) +static void encode_access3args(struct xdr_stream *xdr, + const struct nfs3_accessargs *args) { - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_array(p, args->name.name, args->name.len); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + encode_nfs_fh3(xdr, args->fh); + encode_uint32(xdr, args->access); +} + +static void nfs3_xdr_enc_access3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_accessargs *args) +{ + encode_access3args(xdr, args); } /* - * Encode access() argument + * 3.3.5 READLINK3args + * + * struct READLINK3args { + * nfs_fh3 symlink; + * }; */ -static int -nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) +static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_readlinkargs *args) { - p = xdr_encode_fhandle(p, args->fh); - *p++ = htonl(args->access); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + encode_nfs_fh3(xdr, args->fh); + prepare_reply_buffer(req, args->pages, args->pgbase, + args->pglen, NFS3_readlinkres_sz); } /* - * Arguments to a READ call. Since we read data directly into the page - * cache, we also set up the reply iovec here so that iov[1] points - * exactly to the page we want to fetch. + * 3.3.6 READ3args + * + * struct READ3args { + * nfs_fh3 file; + * offset3 offset; + * count3 count; + * }; */ -static int -nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) +static void encode_read3args(struct xdr_stream *xdr, + const struct nfs_readargs *args) { - struct rpc_auth *auth = req->rq_cred->cr_auth; - unsigned int replen; - u32 count = args->count; + __be32 *p; + + encode_nfs_fh3(xdr, args->fh); - p = xdr_encode_fhandle(p, args->fh); + p = xdr_reserve_space(xdr, 8 + 4); p = xdr_encode_hyper(p, args->offset); - *p++ = htonl(count); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + *p = cpu_to_be32(args->count); +} - /* Inline the page array */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; - xdr_inline_pages(&req->rq_rcv_buf, replen, - args->pages, args->pgbase, count); +static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_readargs *args) +{ + encode_read3args(xdr, args); + prepare_reply_buffer(req, args->pages, args->pgbase, + args->count, NFS3_readres_sz); req->rq_rcv_buf.flags |= XDRBUF_READ; - return 0; } /* - * Write arguments. Splice the buffer to be written into the iovec. + * 3.3.7 WRITE3args + * + * enum stable_how { + * UNSTABLE = 0, + * DATA_SYNC = 1, + * FILE_SYNC = 2 + * }; + * + * struct WRITE3args { + * nfs_fh3 file; + * offset3 offset; + * count3 count; + * stable_how stable; + * opaque data<>; + * }; */ -static int -nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) +static void encode_write3args(struct xdr_stream *xdr, + const struct nfs_writeargs *args) { - struct xdr_buf *sndbuf = &req->rq_snd_buf; - u32 count = args->count; + __be32 *p; - p = xdr_encode_fhandle(p, args->fh); + encode_nfs_fh3(xdr, args->fh); + + p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4); p = xdr_encode_hyper(p, args->offset); - *p++ = htonl(count); - *p++ = htonl(args->stable); - *p++ = htonl(count); - sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); - - /* Copy the page array */ - xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); - sndbuf->flags |= XDRBUF_WRITE; - return 0; + *p++ = cpu_to_be32(args->count); + *p++ = cpu_to_be32(args->stable); + *p = cpu_to_be32(args->count); + xdr_write_pages(xdr, args->pages, args->pgbase, args->count); +} + +static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_writeargs *args) +{ + encode_write3args(xdr, args); + xdr->buf->flags |= XDRBUF_WRITE; } /* - * Encode CREATE arguments + * 3.3.8 CREATE3args + * + * enum createmode3 { + * UNCHECKED = 0, + * GUARDED = 1, + * EXCLUSIVE = 2 + * }; + * + * union createhow3 switch (createmode3 mode) { + * case UNCHECKED: + * case GUARDED: + * sattr3 obj_attributes; + * case EXCLUSIVE: + * createverf3 verf; + * }; + * + * struct CREATE3args { + * diropargs3 where; + * createhow3 how; + * }; */ -static int -nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) +static void encode_createhow3(struct xdr_stream *xdr, + const struct nfs3_createargs *args) { - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_array(p, args->name, args->len); - - *p++ = htonl(args->createmode); - if (args->createmode == NFS3_CREATE_EXCLUSIVE) { - *p++ = args->verifier[0]; - *p++ = args->verifier[1]; - } else - p = xdr_encode_sattr(p, args->sattr); + encode_uint32(xdr, args->createmode); + switch (args->createmode) { + case NFS3_CREATE_UNCHECKED: + case NFS3_CREATE_GUARDED: + encode_sattr3(xdr, args->sattr); + break; + case NFS3_CREATE_EXCLUSIVE: + encode_createverf3(xdr, args->verifier); + break; + default: + BUG(); + } +} - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; +static void nfs3_xdr_enc_create3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_createargs *args) +{ + encode_diropargs3(xdr, args->fh, args->name, args->len); + encode_createhow3(xdr, args); } /* - * Encode MKDIR arguments + * 3.3.9 MKDIR3args + * + * struct MKDIR3args { + * diropargs3 where; + * sattr3 attributes; + * }; */ -static int -nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) +static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_mkdirargs *args) { - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_array(p, args->name, args->len); - p = xdr_encode_sattr(p, args->sattr); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + encode_diropargs3(xdr, args->fh, args->name, args->len); + encode_sattr3(xdr, args->sattr); } /* - * Encode SYMLINK arguments + * 3.3.10 SYMLINK3args + * + * struct symlinkdata3 { + * sattr3 symlink_attributes; + * nfspath3 symlink_data; + * }; + * + * struct SYMLINK3args { + * diropargs3 where; + * symlinkdata3 symlink; + * }; */ -static int -nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) +static void encode_symlinkdata3(struct xdr_stream *xdr, + const struct nfs3_symlinkargs *args) { - p = xdr_encode_fhandle(p, args->fromfh); - p = xdr_encode_array(p, args->fromname, args->fromlen); - p = xdr_encode_sattr(p, args->sattr); - *p++ = htonl(args->pathlen); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + encode_sattr3(xdr, args->sattr); + encode_nfspath3(xdr, args->pages, args->pathlen); +} - /* Copy the page */ - xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); - return 0; +static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_symlinkargs *args) +{ + encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); + encode_symlinkdata3(xdr, args); } /* - * Encode MKNOD arguments + * 3.3.11 MKNOD3args + * + * struct devicedata3 { + * sattr3 dev_attributes; + * specdata3 spec; + * }; + * + * union mknoddata3 switch (ftype3 type) { + * case NF3CHR: + * case NF3BLK: + * devicedata3 device; + * case NF3SOCK: + * case NF3FIFO: + * sattr3 pipe_attributes; + * default: + * void; + * }; + * + * struct MKNOD3args { + * diropargs3 where; + * mknoddata3 what; + * }; */ -static int -nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) -{ - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_array(p, args->name, args->len); - *p++ = htonl(args->type); - p = xdr_encode_sattr(p, args->sattr); - if (args->type == NF3CHR || args->type == NF3BLK) { - *p++ = htonl(MAJOR(args->rdev)); - *p++ = htonl(MINOR(args->rdev)); +static void encode_devicedata3(struct xdr_stream *xdr, + const struct nfs3_mknodargs *args) +{ + encode_sattr3(xdr, args->sattr); + encode_specdata3(xdr, args->rdev); +} + +static void encode_mknoddata3(struct xdr_stream *xdr, + const struct nfs3_mknodargs *args) +{ + encode_ftype3(xdr, args->type); + switch (args->type) { + case NF3CHR: + case NF3BLK: + encode_devicedata3(xdr, args); + break; + case NF3SOCK: + case NF3FIFO: + encode_sattr3(xdr, args->sattr); + break; + case NF3REG: + case NF3DIR: + break; + default: + BUG(); } +} - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; +static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_mknodargs *args) +{ + encode_diropargs3(xdr, args->fh, args->name, args->len); + encode_mknoddata3(xdr, args); } /* - * Encode RENAME arguments + * 3.3.12 REMOVE3args + * + * struct REMOVE3args { + * diropargs3 object; + * }; */ -static int -nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args) -{ - p = xdr_encode_fhandle(p, args->old_dir); - p = xdr_encode_array(p, args->old_name->name, args->old_name->len); - p = xdr_encode_fhandle(p, args->new_dir); - p = xdr_encode_array(p, args->new_name->name, args->new_name->len); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; +static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_removeargs *args) +{ + encode_diropargs3(xdr, args->fh, args->name.name, args->name.len); } /* - * Encode LINK arguments + * 3.3.14 RENAME3args + * + * struct RENAME3args { + * diropargs3 from; + * diropargs3 to; + * }; */ -static int -nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) +static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_renameargs *args) { - p = xdr_encode_fhandle(p, args->fromfh); - p = xdr_encode_fhandle(p, args->tofh); - p = xdr_encode_array(p, args->toname, args->tolen); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + const struct qstr *old = args->old_name; + const struct qstr *new = args->new_name; + + encode_diropargs3(xdr, args->old_dir, old->name, old->len); + encode_diropargs3(xdr, args->new_dir, new->name, new->len); } /* - * Encode arguments to readdir call + * 3.3.15 LINK3args + * + * struct LINK3args { + * nfs_fh3 file; + * diropargs3 link; + * }; */ -static int -nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) +static void nfs3_xdr_enc_link3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_linkargs *args) { - struct rpc_auth *auth = req->rq_cred->cr_auth; - unsigned int replen; - u32 count = args->count; - - p = xdr_encode_fhandle(p, args->fh); - p = xdr_encode_hyper(p, args->cookie); - *p++ = args->verf[0]; - *p++ = args->verf[1]; - if (args->plus) { - /* readdirplus: need dircount + buffer size. - * We just make sure we make dircount big enough */ - *p++ = htonl(count >> 3); - } - *p++ = htonl(count); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - - /* Inline the page array */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; - xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); - return 0; + encode_nfs_fh3(xdr, args->fromfh); + encode_diropargs3(xdr, args->tofh, args->toname, args->tolen); } /* - * Decode the result of a readdir call. - * We just check for syntactical correctness. + * 3.3.16 READDIR3args + * + * struct READDIR3args { + * nfs_fh3 dir; + * cookie3 cookie; + * cookieverf3 cookieverf; + * count3 count; + * }; */ -static int -nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) +static void encode_readdir3args(struct xdr_stream *xdr, + const struct nfs3_readdirargs *args) { - struct xdr_buf *rcvbuf = &req->rq_rcv_buf; - struct kvec *iov = rcvbuf->head; - struct page **page; - size_t hdrlen; - u32 recvd, pglen; - int status; - - status = ntohl(*p++); - /* Decode post_op_attrs */ - p = xdr_decode_post_op_attr(p, res->dir_attr); - if (status) - return nfs_stat_to_errno(status); - /* Decode verifier cookie */ - if (res->verf) { - res->verf[0] = *p++; - res->verf[1] = *p++; - } else { - p += 2; - } + __be32 *p; - hdrlen = (u8 *) p - (u8 *) iov->iov_base; - if (iov->iov_len < hdrlen) { - dprintk("NFS: READDIR reply header overflowed:" - "length %Zu > %Zu\n", hdrlen, iov->iov_len); - return -errno_NFSERR_IO; - } else if (iov->iov_len != hdrlen) { - dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); - xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); - } + encode_nfs_fh3(xdr, args->fh); - pglen = rcvbuf->page_len; - recvd = rcvbuf->len - hdrlen; - if (pglen > recvd) - pglen = recvd; - page = rcvbuf->pages; + p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4); + p = xdr_encode_cookie3(p, args->cookie); + p = xdr_encode_cookieverf3(p, args->verf); + *p = cpu_to_be32(args->count); +} - return pglen; +static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_readdirargs *args) +{ + encode_readdir3args(xdr, args); + prepare_reply_buffer(req, args->pages, 0, + args->count, NFS3_readdirres_sz); } -__be32 * -nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus) +/* + * 3.3.17 READDIRPLUS3args + * + * struct READDIRPLUS3args { + * nfs_fh3 dir; + * cookie3 cookie; + * cookieverf3 cookieverf; + * count3 dircount; + * count3 maxcount; + * }; + */ +static void encode_readdirplus3args(struct xdr_stream *xdr, + const struct nfs3_readdirargs *args) { __be32 *p; - struct nfs_entry old = *entry; - - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - if (!ntohl(*p++)) { - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - if (!ntohl(*p++)) - return ERR_PTR(-EAGAIN); - entry->eof = 1; - return ERR_PTR(-EBADCOOKIE); - } - - p = xdr_inline_decode(xdr, 12); - if (unlikely(!p)) - goto out_overflow; - p = xdr_decode_hyper(p, &entry->ino); - entry->len = ntohl(*p++); - p = xdr_inline_decode(xdr, entry->len + 8); - if (unlikely(!p)) - goto out_overflow; - entry->name = (const char *) p; - p += XDR_QUADLEN(entry->len); - entry->prev_cookie = entry->cookie; - p = xdr_decode_hyper(p, &entry->cookie); + encode_nfs_fh3(xdr, args->fh); - entry->d_type = DT_UNKNOWN; - if (plus) { - entry->fattr->valid = 0; - p = xdr_decode_post_op_attr_stream(xdr, entry->fattr); - if (IS_ERR(p)) - goto out_overflow_exit; - entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); - /* In fact, a post_op_fh3: */ - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - if (*p++) { - p = xdr_decode_fhandle_stream(xdr, entry->fh); - if (IS_ERR(p)) - goto out_overflow_exit; - /* Ugh -- server reply was truncated */ - if (p == NULL) { - dprintk("NFS: FH truncated\n"); - *entry = old; - return ERR_PTR(-EAGAIN); - } - } else - memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); - } + p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4); + p = xdr_encode_cookie3(p, args->cookie); + p = xdr_encode_cookieverf3(p, args->verf); - p = xdr_inline_peek(xdr, 8); - if (p != NULL) - entry->eof = !p[0] && p[1]; - else - entry->eof = 0; + /* + * readdirplus: need dircount + buffer size. + * We just make sure we make dircount big enough + */ + *p++ = cpu_to_be32(args->count >> 3); - return p; + *p = cpu_to_be32(args->count); +} -out_overflow: - print_overflow_msg(__func__, xdr); -out_overflow_exit: - return ERR_PTR(-EAGAIN); +static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_readdirargs *args) +{ + encode_readdirplus3args(xdr, args); + prepare_reply_buffer(req, args->pages, 0, + args->count, NFS3_readdirres_sz); } /* - * Encode COMMIT arguments + * 3.3.21 COMMIT3args + * + * struct COMMIT3args { + * nfs_fh3 file; + * offset3 offset; + * count3 count; + * }; */ -static int -nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) +static void encode_commit3args(struct xdr_stream *xdr, + const struct nfs_writeargs *args) { - p = xdr_encode_fhandle(p, args->fh); + __be32 *p; + + encode_nfs_fh3(xdr, args->fh); + + p = xdr_reserve_space(xdr, 8 + 4); p = xdr_encode_hyper(p, args->offset); - *p++ = htonl(args->count); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - return 0; + *p = cpu_to_be32(args->count); } -#ifdef CONFIG_NFS_V3_ACL -/* - * Encode GETACL arguments - */ -static int -nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, - struct nfs3_getaclargs *args) +static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_writeargs *args) { - struct rpc_auth *auth = req->rq_cred->cr_auth; - unsigned int replen; + encode_commit3args(xdr, args); +} - p = xdr_encode_fhandle(p, args->fh); - *p++ = htonl(args->mask); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); +#ifdef CONFIG_NFS_V3_ACL - if (args->mask & (NFS_ACL | NFS_DFACL)) { - /* Inline the page array */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + - ACL3_getaclres_sz) << 2; - xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, - NFSACL_MAXPAGES << PAGE_SHIFT); - } - return 0; +static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_getaclargs *args) +{ + encode_nfs_fh3(xdr, args->fh); + encode_uint32(xdr, args->mask); + if (args->mask & (NFS_ACL | NFS_DFACL)) + prepare_reply_buffer(req, args->pages, 0, + NFSACL_MAXPAGES << PAGE_SHIFT, + ACL3_getaclres_sz); } -/* - * Encode SETACL arguments - */ -static int -nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, - struct nfs3_setaclargs *args) +static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_setaclargs *args) { - struct xdr_buf *buf = &req->rq_snd_buf; unsigned int base; - int err; - - p = xdr_encode_fhandle(p, NFS_FH(args->inode)); - *p++ = htonl(args->mask); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); - base = req->rq_slen; + int error; + encode_nfs_fh3(xdr, NFS_FH(args->inode)); + encode_uint32(xdr, args->mask); if (args->npages != 0) - xdr_encode_pages(buf, args->pages, 0, args->len); - else - req->rq_slen = xdr_adjust_iovec(req->rq_svec, - p + XDR_QUADLEN(args->len)); + xdr_write_pages(xdr, args->pages, 0, args->len); - err = nfsacl_encode(buf, base, args->inode, + base = req->rq_slen; + error = nfsacl_encode(xdr->buf, base, args->inode, (args->mask & NFS_ACL) ? args->acl_access : NULL, 1, 0); - if (err > 0) - err = nfsacl_encode(buf, base + err, args->inode, - (args->mask & NFS_DFACL) ? - args->acl_default : NULL, 1, - NFS_ACL_DEFAULT); - return (err > 0) ? 0 : err; + BUG_ON(error < 0); + error = nfsacl_encode(xdr->buf, base + error, args->inode, + (args->mask & NFS_DFACL) ? + args->acl_default : NULL, 1, + NFS_ACL_DEFAULT); + BUG_ON(error < 0); } + #endif /* CONFIG_NFS_V3_ACL */ /* - * NFS XDR decode functions + * NFSv3 XDR decode functions + * + * NFSv3 result types are defined in section 3.3 of RFC 1813: + * "NFS Version 3 Protocol Specification". */ /* - * Decode attrstat reply. + * 3.3.1 GETATTR3res + * + * struct GETATTR3resok { + * fattr3 obj_attributes; + * }; + * + * union GETATTR3res switch (nfsstat3 status) { + * case NFS3_OK: + * GETATTR3resok resok; + * default: + * void; + * }; */ -static int -nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) +static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_fattr *result) { - int status; - - if ((status = ntohl(*p++))) - return nfs_stat_to_errno(status); - xdr_decode_fattr(p, fattr); - return 0; + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_default; + error = decode_fattr3(xdr, result); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } /* - * Decode status+wcc_data reply - * SATTR, REMOVE, RMDIR + * 3.3.2 SETATTR3res + * + * struct SETATTR3resok { + * wcc_data obj_wcc; + * }; + * + * struct SETATTR3resfail { + * wcc_data obj_wcc; + * }; + * + * union SETATTR3res switch (nfsstat3 status) { + * case NFS3_OK: + * SETATTR3resok resok; + * default: + * SETATTR3resfail resfail; + * }; */ -static int -nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) +static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_fattr *result) { - int status; - - if ((status = ntohl(*p++))) - status = nfs_stat_to_errno(status); - xdr_decode_wcc_data(p, fattr); - return status; + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_wcc_data(xdr, result); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; +out: + return error; +out_status: + return nfs_stat_to_errno(status); } -static int -nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) +/* + * 3.3.3 LOOKUP3res + * + * struct LOOKUP3resok { + * nfs_fh3 object; + * post_op_attr obj_attributes; + * post_op_attr dir_attributes; + * }; + * + * struct LOOKUP3resfail { + * post_op_attr dir_attributes; + * }; + * + * union LOOKUP3res switch (nfsstat3 status) { + * case NFS3_OK: + * LOOKUP3resok resok; + * default: + * LOOKUP3resfail resfail; + * }; + */ +static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs3_diropres *result) { - return nfs3_xdr_wccstat(req, p, res->dir_attr); + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_default; + error = decode_nfs_fh3(xdr, result->fh); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->dir_attr); +out: + return error; +out_default: + error = decode_post_op_attr(xdr, result->dir_attr); + if (unlikely(error)) + goto out; + return nfs_stat_to_errno(status); } /* - * Decode LOOKUP reply + * 3.3.4 ACCESS3res + * + * struct ACCESS3resok { + * post_op_attr obj_attributes; + * uint32 access; + * }; + * + * struct ACCESS3resfail { + * post_op_attr obj_attributes; + * }; + * + * union ACCESS3res switch (nfsstat3 status) { + * case NFS3_OK: + * ACCESS3resok resok; + * default: + * ACCESS3resfail resfail; + * }; */ -static int -nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) +static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs3_accessres *result) { - int status; - - if ((status = ntohl(*p++))) { - status = nfs_stat_to_errno(status); - } else { - if (!(p = xdr_decode_fhandle(p, res->fh))) - return -errno_NFSERR_IO; - p = xdr_decode_post_op_attr(p, res->fattr); - } - xdr_decode_post_op_attr(p, res->dir_attr); - return status; + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_default; + error = decode_uint32(xdr, &result->access); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } /* - * Decode ACCESS reply + * 3.3.5 READLINK3res + * + * struct READLINK3resok { + * post_op_attr symlink_attributes; + * nfspath3 data; + * }; + * + * struct READLINK3resfail { + * post_op_attr symlink_attributes; + * }; + * + * union READLINK3res switch (nfsstat3 status) { + * case NFS3_OK: + * READLINK3resok resok; + * default: + * READLINK3resfail resfail; + * }; */ -static int -nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) +static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_fattr *result) { - int status = ntohl(*p++); - - p = xdr_decode_post_op_attr(p, res->fattr); - if (status) - return nfs_stat_to_errno(status); - res->access = ntohl(*p++); - return 0; + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_default; + error = decode_nfspath3(xdr); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } -static int -nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) +/* + * 3.3.6 READ3res + * + * struct READ3resok { + * post_op_attr file_attributes; + * count3 count; + * bool eof; + * opaque data<>; + * }; + * + * struct READ3resfail { + * post_op_attr file_attributes; + * }; + * + * union READ3res switch (nfsstat3 status) { + * case NFS3_OK: + * READ3resok resok; + * default: + * READ3resfail resfail; + * }; + */ +static int decode_read3resok(struct xdr_stream *xdr, + struct nfs_readres *result) { - struct rpc_auth *auth = req->rq_cred->cr_auth; - unsigned int replen; + u32 eof, count, ocount, recvd; + size_t hdrlen; + __be32 *p; - p = xdr_encode_fhandle(p, args->fh); - req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); + p = xdr_inline_decode(xdr, 4 + 4 + 4); + if (unlikely(p == NULL)) + goto out_overflow; + count = be32_to_cpup(p++); + eof = be32_to_cpup(p++); + ocount = be32_to_cpup(p++); + if (unlikely(ocount != count)) + goto out_mismatch; + hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; + recvd = xdr->buf->len - hdrlen; + if (unlikely(count > recvd)) + goto out_cheating; + +out: + xdr_read_pages(xdr, count); + result->eof = eof; + result->count = count; + return count; +out_mismatch: + dprintk("NFS: READ count doesn't match length of opaque: " + "count %u != ocount %u\n", count, ocount); + return -EIO; +out_cheating: + dprintk("NFS: server cheating in read result: " + "count %u > recvd %u\n", count, recvd); + count = recvd; + eof = 0; + goto out; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} - /* Inline the page array */ - replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; - xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); - return 0; +static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_readres *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; + error = decode_read3resok(xdr, result); +out: + return error; +out_status: + return nfs_stat_to_errno(status); } /* - * Decode READLINK reply + * 3.3.7 WRITE3res + * + * enum stable_how { + * UNSTABLE = 0, + * DATA_SYNC = 1, + * FILE_SYNC = 2 + * }; + * + * struct WRITE3resok { + * wcc_data file_wcc; + * count3 count; + * stable_how committed; + * writeverf3 verf; + * }; + * + * struct WRITE3resfail { + * wcc_data file_wcc; + * }; + * + * union WRITE3res switch (nfsstat3 status) { + * case NFS3_OK: + * WRITE3resok resok; + * default: + * WRITE3resfail resfail; + * }; */ -static int -nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) +static int decode_write3resok(struct xdr_stream *xdr, + struct nfs_writeres *result) { - struct xdr_buf *rcvbuf = &req->rq_rcv_buf; - struct kvec *iov = rcvbuf->head; - size_t hdrlen; - u32 len, recvd; - int status; - - status = ntohl(*p++); - p = xdr_decode_post_op_attr(p, fattr); - - if (status != 0) - return nfs_stat_to_errno(status); - - /* Convert length of symlink */ - len = ntohl(*p++); - if (len >= rcvbuf->page_len) { - dprintk("nfs: server returned giant symlink!\n"); - return -ENAMETOOLONG; - } + __be32 *p; - hdrlen = (u8 *) p - (u8 *) iov->iov_base; - if (iov->iov_len < hdrlen) { - dprintk("NFS: READLINK reply header overflowed:" - "length %Zu > %Zu\n", hdrlen, iov->iov_len); - return -errno_NFSERR_IO; - } else if (iov->iov_len != hdrlen) { - dprintk("NFS: READLINK header is short. " - "iovec will be shifted.\n"); - xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); - } - recvd = req->rq_rcv_buf.len - hdrlen; - if (recvd < len) { - dprintk("NFS: server cheating in readlink reply: " - "count %u > recvd %u\n", len, recvd); - return -EIO; - } + p = xdr_inline_decode(xdr, 4 + 4 + NFS3_WRITEVERFSIZE); + if (unlikely(p == NULL)) + goto out_overflow; + result->count = be32_to_cpup(p++); + result->verf->committed = be32_to_cpup(p++); + if (unlikely(result->verf->committed > NFS_FILE_SYNC)) + goto out_badvalue; + memcpy(result->verf->verifier, p, NFS3_WRITEVERFSIZE); + return result->count; +out_badvalue: + dprintk("NFS: bad stable_how value: %u\n", result->verf->committed); + return -EIO; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} - xdr_terminate_string(rcvbuf, len); - return 0; +static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_writeres *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_wcc_data(xdr, result->fattr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; + error = decode_write3resok(xdr, result); +out: + return error; +out_status: + return nfs_stat_to_errno(status); } /* - * Decode READ reply + * 3.3.8 CREATE3res + * + * struct CREATE3resok { + * post_op_fh3 obj; + * post_op_attr obj_attributes; + * wcc_data dir_wcc; + * }; + * + * struct CREATE3resfail { + * wcc_data dir_wcc; + * }; + * + * union CREATE3res switch (nfsstat3 status) { + * case NFS3_OK: + * CREATE3resok resok; + * default: + * CREATE3resfail resfail; + * }; */ -static int -nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) +static int decode_create3resok(struct xdr_stream *xdr, + struct nfs3_diropres *result) { - struct kvec *iov = req->rq_rcv_buf.head; - size_t hdrlen; - u32 count, ocount, recvd; - int status; + int error; + + error = decode_post_op_fh3(xdr, result->fh); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + /* The server isn't required to return a file handle. + * If it didn't, force the client to perform a LOOKUP + * to determine the correct file handle and attribute + * values for the new object. */ + if (result->fh->size == 0) + result->fattr->valid = 0; + error = decode_wcc_data(xdr, result->dir_attr); +out: + return error; +} - status = ntohl(*p++); - p = xdr_decode_post_op_attr(p, res->fattr); +static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs3_diropres *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_default; + error = decode_create3resok(xdr, result); +out: + return error; +out_default: + error = decode_wcc_data(xdr, result->dir_attr); + if (unlikely(error)) + goto out; + return nfs_stat_to_errno(status); +} - if (status != 0) - return nfs_stat_to_errno(status); +/* + * 3.3.12 REMOVE3res + * + * struct REMOVE3resok { + * wcc_data dir_wcc; + * }; + * + * struct REMOVE3resfail { + * wcc_data dir_wcc; + * }; + * + * union REMOVE3res switch (nfsstat3 status) { + * case NFS3_OK: + * REMOVE3resok resok; + * default: + * REMOVE3resfail resfail; + * }; + */ +static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_removeres *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_wcc_data(xdr, result->dir_attr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; +out: + return error; +out_status: + return nfs_stat_to_errno(status); +} - /* Decode reply count and EOF flag. NFSv3 is somewhat redundant - * in that it puts the count both in the res struct and in the - * opaque data count. */ - count = ntohl(*p++); - res->eof = ntohl(*p++); - ocount = ntohl(*p++); +/* + * 3.3.14 RENAME3res + * + * struct RENAME3resok { + * wcc_data fromdir_wcc; + * wcc_data todir_wcc; + * }; + * + * struct RENAME3resfail { + * wcc_data fromdir_wcc; + * wcc_data todir_wcc; + * }; + * + * union RENAME3res switch (nfsstat3 status) { + * case NFS3_OK: + * RENAME3resok resok; + * default: + * RENAME3resfail resfail; + * }; + */ +static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_renameres *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_wcc_data(xdr, result->old_fattr); + if (unlikely(error)) + goto out; + error = decode_wcc_data(xdr, result->new_fattr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; +out: + return error; +out_status: + return nfs_stat_to_errno(status); +} - if (ocount != count) { - dprintk("NFS: READ count doesn't match RPC opaque count.\n"); - return -errno_NFSERR_IO; - } +/* + * 3.3.15 LINK3res + * + * struct LINK3resok { + * post_op_attr file_attributes; + * wcc_data linkdir_wcc; + * }; + * + * struct LINK3resfail { + * post_op_attr file_attributes; + * wcc_data linkdir_wcc; + * }; + * + * union LINK3res switch (nfsstat3 status) { + * case NFS3_OK: + * LINK3resok resok; + * default: + * LINK3resfail resfail; + * }; + */ +static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs3_linkres *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + error = decode_wcc_data(xdr, result->dir_attr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; +out: + return error; +out_status: + return nfs_stat_to_errno(status); +} - hdrlen = (u8 *) p - (u8 *) iov->iov_base; - if (iov->iov_len < hdrlen) { - dprintk("NFS: READ reply header overflowed:" - "length %Zu > %Zu\n", hdrlen, iov->iov_len); - return -errno_NFSERR_IO; - } else if (iov->iov_len != hdrlen) { - dprintk("NFS: READ header is short. iovec will be shifted.\n"); - xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); - } +/** + * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in + * the local page cache + * @xdr: XDR stream where entry resides + * @entry: buffer to fill in with entry data + * @plus: boolean indicating whether this should be a readdirplus entry + * + * Returns zero if successful, otherwise a negative errno value is + * returned. + * + * This function is not invoked during READDIR reply decoding, but + * rather whenever an application invokes the getdents(2) system call + * on a directory already in our cache. + * + * 3.3.16 entry3 + * + * struct entry3 { + * fileid3 fileid; + * filename3 name; + * cookie3 cookie; + * fhandle3 filehandle; + * post_op_attr3 attributes; + * entry3 *nextentry; + * }; + * + * 3.3.17 entryplus3 + * struct entryplus3 { + * fileid3 fileid; + * filename3 name; + * cookie3 cookie; + * post_op_attr name_attributes; + * post_op_fh3 name_handle; + * entryplus3 *nextentry; + * }; + */ +int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, + int plus) +{ + struct nfs_entry old = *entry; + __be32 *p; + int error; - recvd = req->rq_rcv_buf.len - hdrlen; - if (count > recvd) { - dprintk("NFS: server cheating in read reply: " - "count %u > recvd %u\n", count, recvd); - count = recvd; - res->eof = 0; + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + if (*p == xdr_zero) { + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + if (*p == xdr_zero) + return -EAGAIN; + entry->eof = 1; + return -EBADCOOKIE; } - if (count < res->count) - res->count = count; + error = decode_fileid3(xdr, &entry->ino); + if (unlikely(error)) + return error; - return count; -} + error = decode_inline_filename3(xdr, &entry->name, &entry->len); + if (unlikely(error)) + return error; -/* - * Decode WRITE response - */ -static int -nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) -{ - int status; + entry->prev_cookie = entry->cookie; + error = decode_cookie3(xdr, &entry->cookie); + if (unlikely(error)) + return error; - status = ntohl(*p++); - p = xdr_decode_wcc_data(p, res->fattr); + entry->d_type = DT_UNKNOWN; - if (status != 0) - return nfs_stat_to_errno(status); + if (plus) { + entry->fattr->valid = 0; + error = decode_post_op_attr(xdr, entry->fattr); + if (unlikely(error)) + return error; + if (entry->fattr->valid & NFS_ATTR_FATTR_V3) + entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); - res->count = ntohl(*p++); - res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); - res->verf->verifier[0] = *p++; - res->verf->verifier[1] = *p++; + /* In fact, a post_op_fh3: */ + p = xdr_inline_decode(xdr, 4); + if (unlikely(p == NULL)) + goto out_overflow; + if (*p != xdr_zero) { + error = decode_nfs_fh3(xdr, entry->fh); + if (unlikely(error)) { + if (error == -E2BIG) + goto out_truncated; + return error; + } + } else + zero_nfs_fh3(entry->fh); + } - return res->count; -} + /* Peek at the next entry to see if we're at EOD */ + p = xdr_inline_peek(xdr, 4 + 4); + entry->eof = 0; + if (p != NULL) + entry->eof = (p[0] == xdr_zero) && (p[1] != xdr_zero); + return 0; -/* - * Decode a CREATE response - */ -static int -nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) -{ - int status; - - status = ntohl(*p++); - if (status == 0) { - if (*p++) { - if (!(p = xdr_decode_fhandle(p, res->fh))) - return -errno_NFSERR_IO; - p = xdr_decode_post_op_attr(p, res->fattr); - } else { - memset(res->fh, 0, sizeof(*res->fh)); - /* Do decode post_op_attr but set it to NULL */ - p = xdr_decode_post_op_attr(p, res->fattr); - res->fattr->valid = 0; - } - } else { - status = nfs_stat_to_errno(status); - } - p = xdr_decode_wcc_data(p, res->dir_attr); - return status; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EAGAIN; +out_truncated: + dprintk("NFS: directory entry contains invalid file handle\n"); + *entry = old; + return -EAGAIN; } /* - * Decode RENAME reply + * 3.3.16 READDIR3res + * + * struct dirlist3 { + * entry3 *entries; + * bool eof; + * }; + * + * struct READDIR3resok { + * post_op_attr dir_attributes; + * cookieverf3 cookieverf; + * dirlist3 reply; + * }; + * + * struct READDIR3resfail { + * post_op_attr dir_attributes; + * }; + * + * union READDIR3res switch (nfsstat3 status) { + * case NFS3_OK: + * READDIR3resok resok; + * default: + * READDIR3resfail resfail; + * }; + * + * Read the directory contents into the page cache, but otherwise + * don't touch them. The actual decoding is done by nfs3_decode_entry() + * during subsequent nfs_readdir() calls. */ -static int -nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs_renameres *res) +static int decode_dirlist3(struct xdr_stream *xdr) { - int status; + u32 recvd, pglen; + size_t hdrlen; - if ((status = ntohl(*p++)) != 0) - status = nfs_stat_to_errno(status); - p = xdr_decode_wcc_data(p, res->old_fattr); - p = xdr_decode_wcc_data(p, res->new_fattr); - return status; + pglen = xdr->buf->page_len; + hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; + recvd = xdr->buf->len - hdrlen; + if (unlikely(pglen > recvd)) + goto out_cheating; +out: + xdr_read_pages(xdr, pglen); + return pglen; +out_cheating: + dprintk("NFS: server cheating in readdir result: " + "pglen %u > recvd %u\n", pglen, recvd); + pglen = recvd; + goto out; } -/* - * Decode LINK reply - */ -static int -nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) +static int decode_readdir3resok(struct xdr_stream *xdr, + struct nfs3_readdirres *result) { - int status; + int error; + + error = decode_post_op_attr(xdr, result->dir_attr); + if (unlikely(error)) + goto out; + /* XXX: do we need to check if result->verf != NULL ? */ + error = decode_cookieverf3(xdr, result->verf); + if (unlikely(error)) + goto out; + error = decode_dirlist3(xdr); +out: + return error; +} - if ((status = ntohl(*p++)) != 0) - status = nfs_stat_to_errno(status); - p = xdr_decode_post_op_attr(p, res->fattr); - p = xdr_decode_wcc_data(p, res->dir_attr); - return status; +static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs3_readdirres *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_default; + error = decode_readdir3resok(xdr, result); +out: + return error; +out_default: + error = decode_post_op_attr(xdr, result->dir_attr); + if (unlikely(error)) + goto out; + return nfs_stat_to_errno(status); } /* - * Decode FSSTAT reply + * 3.3.18 FSSTAT3res + * + * struct FSSTAT3resok { + * post_op_attr obj_attributes; + * size3 tbytes; + * size3 fbytes; + * size3 abytes; + * size3 tfiles; + * size3 ffiles; + * size3 afiles; + * uint32 invarsec; + * }; + * + * struct FSSTAT3resfail { + * post_op_attr obj_attributes; + * }; + * + * union FSSTAT3res switch (nfsstat3 status) { + * case NFS3_OK: + * FSSTAT3resok resok; + * default: + * FSSTAT3resfail resfail; + * }; */ -static int -nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) +static int decode_fsstat3resok(struct xdr_stream *xdr, + struct nfs_fsstat *result) { - int status; - - status = ntohl(*p++); - - p = xdr_decode_post_op_attr(p, res->fattr); - if (status != 0) - return nfs_stat_to_errno(status); - - p = xdr_decode_hyper(p, &res->tbytes); - p = xdr_decode_hyper(p, &res->fbytes); - p = xdr_decode_hyper(p, &res->abytes); - p = xdr_decode_hyper(p, &res->tfiles); - p = xdr_decode_hyper(p, &res->ffiles); - p = xdr_decode_hyper(p, &res->afiles); + __be32 *p; + p = xdr_inline_decode(xdr, 8 * 6 + 4); + if (unlikely(p == NULL)) + goto out_overflow; + p = xdr_decode_size3(p, &result->tbytes); + p = xdr_decode_size3(p, &result->fbytes); + p = xdr_decode_size3(p, &result->abytes); + p = xdr_decode_size3(p, &result->tfiles); + p = xdr_decode_size3(p, &result->ffiles); + xdr_decode_size3(p, &result->afiles); /* ignore invarsec */ return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_fsstat *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; + error = decode_fsstat3resok(xdr, result); +out: + return error; +out_status: + return nfs_stat_to_errno(status); } /* - * Decode FSINFO reply + * 3.3.19 FSINFO3res + * + * struct FSINFO3resok { + * post_op_attr obj_attributes; + * uint32 rtmax; + * uint32 rtpref; + * uint32 rtmult; + * uint32 wtmax; + * uint32 wtpref; + * uint32 wtmult; + * uint32 dtpref; + * size3 maxfilesize; + * nfstime3 time_delta; + * uint32 properties; + * }; + * + * struct FSINFO3resfail { + * post_op_attr obj_attributes; + * }; + * + * union FSINFO3res switch (nfsstat3 status) { + * case NFS3_OK: + * FSINFO3resok resok; + * default: + * FSINFO3resfail resfail; + * }; */ -static int -nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) +static int decode_fsinfo3resok(struct xdr_stream *xdr, + struct nfs_fsinfo *result) { - int status; - - status = ntohl(*p++); - - p = xdr_decode_post_op_attr(p, res->fattr); - if (status != 0) - return nfs_stat_to_errno(status); + __be32 *p; - res->rtmax = ntohl(*p++); - res->rtpref = ntohl(*p++); - res->rtmult = ntohl(*p++); - res->wtmax = ntohl(*p++); - res->wtpref = ntohl(*p++); - res->wtmult = ntohl(*p++); - res->dtpref = ntohl(*p++); - p = xdr_decode_hyper(p, &res->maxfilesize); - p = xdr_decode_time3(p, &res->time_delta); + p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4); + if (unlikely(p == NULL)) + goto out_overflow; + result->rtmax = be32_to_cpup(p++); + result->rtpref = be32_to_cpup(p++); + result->rtmult = be32_to_cpup(p++); + result->wtmax = be32_to_cpup(p++); + result->wtpref = be32_to_cpup(p++); + result->wtmult = be32_to_cpup(p++); + result->dtpref = be32_to_cpup(p++); + p = xdr_decode_size3(p, &result->maxfilesize); + xdr_decode_nfstime3(p, &result->time_delta); /* ignore properties */ - res->lease_time = 0; + result->lease_time = 0; return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_fsinfo *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; + error = decode_fsinfo3resok(xdr, result); +out: + return error; +out_status: + return nfs_stat_to_errno(status); } /* - * Decode PATHCONF reply + * 3.3.20 PATHCONF3res + * + * struct PATHCONF3resok { + * post_op_attr obj_attributes; + * uint32 linkmax; + * uint32 name_max; + * bool no_trunc; + * bool chown_restricted; + * bool case_insensitive; + * bool case_preserving; + * }; + * + * struct PATHCONF3resfail { + * post_op_attr obj_attributes; + * }; + * + * union PATHCONF3res switch (nfsstat3 status) { + * case NFS3_OK: + * PATHCONF3resok resok; + * default: + * PATHCONF3resfail resfail; + * }; */ -static int -nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) +static int decode_pathconf3resok(struct xdr_stream *xdr, + struct nfs_pathconf *result) { - int status; - - status = ntohl(*p++); - - p = xdr_decode_post_op_attr(p, res->fattr); - if (status != 0) - return nfs_stat_to_errno(status); - res->max_link = ntohl(*p++); - res->max_namelen = ntohl(*p++); + __be32 *p; + p = xdr_inline_decode(xdr, 4 * 6); + if (unlikely(p == NULL)) + goto out_overflow; + result->max_link = be32_to_cpup(p++); + result->max_namelen = be32_to_cpup(p); /* ignore remaining fields */ return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + +static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_pathconf *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; + error = decode_pathconf3resok(xdr, result); +out: + return error; +out_status: + return nfs_stat_to_errno(status); } /* - * Decode COMMIT reply + * 3.3.21 COMMIT3res + * + * struct COMMIT3resok { + * wcc_data file_wcc; + * writeverf3 verf; + * }; + * + * struct COMMIT3resfail { + * wcc_data file_wcc; + * }; + * + * union COMMIT3res switch (nfsstat3 status) { + * case NFS3_OK: + * COMMIT3resok resok; + * default: + * COMMIT3resfail resfail; + * }; */ -static int -nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) +static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_writeres *result) { - int status; - - status = ntohl(*p++); - p = xdr_decode_wcc_data(p, res->fattr); - if (status != 0) - return nfs_stat_to_errno(status); - - res->verf->verifier[0] = *p++; - res->verf->verifier[1] = *p++; - return 0; + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + error = decode_wcc_data(xdr, result->fattr); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_status; + error = decode_writeverf3(xdr, result->verf->verifier); +out: + return error; +out_status: + return nfs_stat_to_errno(status); } #ifdef CONFIG_NFS_V3_ACL -/* - * Decode GETACL reply - */ -static int -nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, - struct nfs3_getaclres *res) + +static inline int decode_getacl3resok(struct xdr_stream *xdr, + struct nfs3_getaclres *result) { - struct xdr_buf *buf = &req->rq_rcv_buf; - int status = ntohl(*p++); struct posix_acl **acl; unsigned int *aclcnt; - int err, base; - - if (status != 0) - return nfs_stat_to_errno(status); - p = xdr_decode_post_op_attr(p, res->fattr); - res->mask = ntohl(*p++); - if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) - return -EINVAL; - base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; - - acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; - aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; - err = nfsacl_decode(buf, base, aclcnt, acl); - - acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; - aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; - if (err > 0) - err = nfsacl_decode(buf, base + err, aclcnt, acl); - return (err > 0) ? 0 : err; + size_t hdrlen; + int error; + + error = decode_post_op_attr(xdr, result->fattr); + if (unlikely(error)) + goto out; + error = decode_uint32(xdr, &result->mask); + if (unlikely(error)) + goto out; + error = -EINVAL; + if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) + goto out; + + hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; + + acl = NULL; + if (result->mask & NFS_ACL) + acl = &result->acl_access; + aclcnt = NULL; + if (result->mask & NFS_ACLCNT) + aclcnt = &result->acl_access_count; + error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl); + if (unlikely(error <= 0)) + goto out; + + acl = NULL; + if (result->mask & NFS_DFACL) + acl = &result->acl_default; + aclcnt = NULL; + if (result->mask & NFS_DFACLCNT) + aclcnt = &result->acl_default_count; + error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl); + if (unlikely(error <= 0)) + return error; + error = 0; +out: + return error; } -/* - * Decode setacl reply. - */ -static int -nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) +static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs3_getaclres *result) { - int status = ntohl(*p++); + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_default; + error = decode_getacl3resok(xdr, result); +out: + return error; +out_default: + return nfs_stat_to_errno(status); +} - if (status) - return nfs_stat_to_errno(status); - xdr_decode_post_op_attr(p, fattr); - return 0; +static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_fattr *result) +{ + enum nfs_stat status; + int error; + + error = decode_nfsstat3(xdr, &status); + if (unlikely(error)) + goto out; + if (status != NFS3_OK) + goto out_default; + error = decode_post_op_attr(xdr, result); +out: + return error; +out_default: + return nfs_stat_to_errno(status); } + #endif /* CONFIG_NFS_V3_ACL */ #define PROC(proc, argtype, restype, timer) \ [NFS3PROC_##proc] = { \ .p_proc = NFS3PROC_##proc, \ - .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ - .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ - .p_arglen = NFS3_##argtype##_sz, \ - .p_replen = NFS3_##restype##_sz, \ + .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \ + .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \ + .p_arglen = NFS3_##argtype##args_sz, \ + .p_replen = NFS3_##restype##res_sz, \ .p_timer = timer, \ .p_statidx = NFS3PROC_##proc, \ .p_name = #proc, \ } struct rpc_procinfo nfs3_procedures[] = { - PROC(GETATTR, fhandle, attrstat, 1), - PROC(SETATTR, sattrargs, wccstat, 0), - PROC(LOOKUP, diropargs, lookupres, 2), - PROC(ACCESS, accessargs, accessres, 1), - PROC(READLINK, readlinkargs, readlinkres, 3), - PROC(READ, readargs, readres, 3), - PROC(WRITE, writeargs, writeres, 4), - PROC(CREATE, createargs, createres, 0), - PROC(MKDIR, mkdirargs, createres, 0), - PROC(SYMLINK, symlinkargs, createres, 0), - PROC(MKNOD, mknodargs, createres, 0), - PROC(REMOVE, removeargs, removeres, 0), - PROC(RMDIR, diropargs, wccstat, 0), - PROC(RENAME, renameargs, renameres, 0), - PROC(LINK, linkargs, linkres, 0), - PROC(READDIR, readdirargs, readdirres, 3), - PROC(READDIRPLUS, readdirargs, readdirres, 3), - PROC(FSSTAT, fhandle, fsstatres, 0), - PROC(FSINFO, fhandle, fsinfores, 0), - PROC(PATHCONF, fhandle, pathconfres, 0), - PROC(COMMIT, commitargs, commitres, 5), + PROC(GETATTR, getattr, getattr, 1), + PROC(SETATTR, setattr, setattr, 0), + PROC(LOOKUP, lookup, lookup, 2), + PROC(ACCESS, access, access, 1), + PROC(READLINK, readlink, readlink, 3), + PROC(READ, read, read, 3), + PROC(WRITE, write, write, 4), + PROC(CREATE, create, create, 0), + PROC(MKDIR, mkdir, create, 0), + PROC(SYMLINK, symlink, create, 0), + PROC(MKNOD, mknod, create, 0), + PROC(REMOVE, remove, remove, 0), + PROC(RMDIR, lookup, setattr, 0), + PROC(RENAME, rename, rename, 0), + PROC(LINK, link, link, 0), + PROC(READDIR, readdir, readdir, 3), + PROC(READDIRPLUS, readdirplus, readdir, 3), + PROC(FSSTAT, getattr, fsstat, 0), + PROC(FSINFO, getattr, fsinfo, 0), + PROC(PATHCONF, getattr, pathconf, 0), + PROC(COMMIT, commit, commit, 5), }; struct rpc_version nfs_version3 = { @@ -1185,8 +2473,8 @@ struct rpc_version nfs_version3 = { static struct rpc_procinfo nfs3_acl_procedures[] = { [ACLPROC3_GETACL] = { .p_proc = ACLPROC3_GETACL, - .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, - .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, + .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args, + .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res, .p_arglen = ACL3_getaclargs_sz, .p_replen = ACL3_getaclres_sz, .p_timer = 1, @@ -1194,8 +2482,8 @@ static struct rpc_procinfo nfs3_acl_procedures[] = { }, [ACLPROC3_SETACL] = { .p_proc = ACLPROC3_SETACL, - .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, - .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, + .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args, + .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res, .p_arglen = ACL3_setaclargs_sz, .p_replen = ACL3_setaclres_sz, .p_timer = 0, diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 9fa496387fdf..3b3829c3098f 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -227,12 +227,6 @@ struct nfs4_state_maintenance_ops { extern const struct dentry_operations nfs4_dentry_operations; extern const struct inode_operations nfs4_dir_inode_operations; -/* inode.c */ -extern ssize_t nfs4_getxattr(struct dentry *, const char *, void *, size_t); -extern int nfs4_setxattr(struct dentry *, const char *, const void *, size_t, int); -extern ssize_t nfs4_listxattr(struct dentry *, char *, size_t); - - /* nfs4proc.c */ extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); @@ -246,6 +240,7 @@ extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fh extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, struct nfs4_fs_locations *fs_locations, struct page *page); extern void nfs4_release_lockowner(const struct nfs4_lock_state *); +extern const struct xattr_handler *nfs4_xattr_handlers[]; #if defined(CONFIG_NFS_V4_1) static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) @@ -331,7 +326,6 @@ extern void nfs_free_seqid(struct nfs_seqid *seqid); extern const nfs4_stateid zero_stateid; /* nfs4xdr.c */ -extern __be32 *nfs4_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int); extern struct rpc_procinfo nfs4_procedures[]; struct nfs4_mount_data; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 4435e5e1f904..82f3a82b7115 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -49,6 +49,7 @@ #include <linux/mount.h> #include <linux/module.h> #include <linux/sunrpc/bc_xprt.h> +#include <linux/xattr.h> #include "nfs4_fs.h" #include "delegation.h" @@ -1984,8 +1985,8 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, i path_get(path); calldata->path = *path; - msg.rpc_argp = &calldata->arg, - msg.rpc_resp = &calldata->res, + msg.rpc_argp = &calldata->arg; + msg.rpc_resp = &calldata->res; task_setup_data.callback_data = calldata; task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) @@ -2486,6 +2487,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, path = &ctx->path; fmode = ctx->mode; } + sattr->ia_mode &= ~current_umask(); state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); d_drop(dentry); if (IS_ERR(state)) { @@ -2816,6 +2818,8 @@ static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, { struct nfs4_exception exception = { }; int err; + + sattr->ia_mode &= ~current_umask(); do { err = nfs4_handle_exception(NFS_SERVER(dir), _nfs4_proc_mkdir(dir, dentry, sattr), @@ -2916,6 +2920,8 @@ static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, { struct nfs4_exception exception = { }; int err; + + sattr->ia_mode &= ~current_umask(); do { err = nfs4_handle_exception(NFS_SERVER(dir), _nfs4_proc_mknod(dir, dentry, sattr, rdev), @@ -3517,7 +3523,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, if (signalled()) break; if (loop++ & 1) - ssleep(clp->cl_lease_time + 1); + ssleep(clp->cl_lease_time / HZ + 1); else if (++clp->cl_id_uniquifier == 0) break; @@ -3663,8 +3669,8 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co data->rpc_status = 0; task_setup_data.callback_data = data; - msg.rpc_argp = &data->args, - msg.rpc_resp = &data->res, + msg.rpc_argp = &data->args; + msg.rpc_resp = &data->res; task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -3908,8 +3914,8 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, return ERR_PTR(-ENOMEM); } - msg.rpc_argp = &data->arg, - msg.rpc_resp = &data->res, + msg.rpc_argp = &data->arg; + msg.rpc_resp = &data->res; task_setup_data.callback_data = data; return rpc_run_task(&task_setup_data); } @@ -4145,8 +4151,8 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f data->arg.reclaim = NFS_LOCK_RECLAIM; task_setup_data.callback_ops = &nfs4_recover_lock_ops; } - msg.rpc_argp = &data->arg, - msg.rpc_resp = &data->res, + msg.rpc_argp = &data->arg; + msg.rpc_resp = &data->res; task_setup_data.callback_data = data; task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) @@ -4398,42 +4404,36 @@ void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" -int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, - size_t buflen, int flags) +static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, + const void *buf, size_t buflen, + int flags, int type) { - struct inode *inode = dentry->d_inode; - - if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) - return -EOPNOTSUPP; + if (strcmp(key, "") != 0) + return -EINVAL; - return nfs4_proc_set_acl(inode, buf, buflen); + return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); } -/* The getxattr man page suggests returning -ENODATA for unknown attributes, - * and that's what we'll do for e.g. user attributes that haven't been set. - * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported - * attributes in kernel-managed attribute namespaces. */ -ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, - size_t buflen) +static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, + void *buf, size_t buflen, int type) { - struct inode *inode = dentry->d_inode; - - if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) - return -EOPNOTSUPP; + if (strcmp(key, "") != 0) + return -EINVAL; - return nfs4_proc_get_acl(inode, buf, buflen); + return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); } -ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) +static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, + size_t list_len, const char *name, + size_t name_len, int type) { - size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; + size_t len = sizeof(XATTR_NAME_NFSV4_ACL); if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) return 0; - if (buf && buflen < len) - return -ERANGE; - if (buf) - memcpy(buf, XATTR_NAME_NFSV4_ACL, len); + + if (list && len <= list_len) + memcpy(list, XATTR_NAME_NFSV4_ACL, len); return len; } @@ -5504,9 +5504,10 @@ static const struct inode_operations nfs4_file_inode_operations = { .permission = nfs_permission, .getattr = nfs_getattr, .setattr = nfs_setattr, - .getxattr = nfs4_getxattr, - .setxattr = nfs4_setxattr, - .listxattr = nfs4_listxattr, + .getxattr = generic_getxattr, + .setxattr = generic_setxattr, + .listxattr = generic_listxattr, + .removexattr = generic_removexattr, }; const struct nfs_rpc_ops nfs_v4_clientops = { @@ -5551,6 +5552,18 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .open_context = nfs4_atomic_open, }; +static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { + .prefix = XATTR_NAME_NFSV4_ACL, + .list = nfs4_xattr_list_nfs4_acl, + .get = nfs4_xattr_get_nfs4_acl, + .set = nfs4_xattr_set_nfs4_acl, +}; + +const struct xattr_handler *nfs4_xattr_handlers[] = { + &nfs4_xattr_nfs4_acl_handler, + NULL +}; + /* * Local variables: * c-basic-offset: 8 diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 9f1826b012e6..f3f99156bfcb 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1510,7 +1510,7 @@ encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) hdr->replen += decode_restorefh_maxsz; } -static int +static void encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) { __be32 *p; @@ -1521,14 +1521,12 @@ encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compoun p = reserve_space(xdr, 2*4); *p++ = cpu_to_be32(1); *p = cpu_to_be32(FATTR4_WORD0_ACL); - if (arg->acl_len % 4) - return -EINVAL; + BUG_ON(arg->acl_len % 4); p = reserve_space(xdr, 4); *p = cpu_to_be32(arg->acl_len); xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); hdr->nops++; hdr->replen += decode_setacl_maxsz; - return 0; } static void @@ -1833,393 +1831,362 @@ static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) /* * Encode an ACCESS request */ -static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args) +static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_accessargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_access(&xdr, args->access, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_access(xdr, args->access, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode LOOKUP request */ -static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args) +static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_lookup_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->dir_fh, &hdr); - encode_lookup(&xdr, args->name, &hdr); - encode_getfh(&xdr, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->dir_fh, &hdr); + encode_lookup(xdr, args->name, &hdr); + encode_getfh(xdr, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode LOOKUP_ROOT request */ -static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args) +static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs4_lookup_root_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putrootfh(&xdr, &hdr); - encode_getfh(&xdr, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putrootfh(xdr, &hdr); + encode_getfh(xdr, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode REMOVE request */ -static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) +static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs_removeargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_remove(&xdr, &args->name, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_remove(xdr, &args->name, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode RENAME request */ -static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args) +static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs_renameargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->old_dir, &hdr); - encode_savefh(&xdr, &hdr); - encode_putfh(&xdr, args->new_dir, &hdr); - encode_rename(&xdr, args->old_name, args->new_name, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); - encode_restorefh(&xdr, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->old_dir, &hdr); + encode_savefh(xdr, &hdr); + encode_putfh(xdr, args->new_dir, &hdr); + encode_rename(xdr, args->old_name, args->new_name, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); + encode_restorefh(xdr, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode LINK request */ -static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args) +static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_link_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_savefh(&xdr, &hdr); - encode_putfh(&xdr, args->dir_fh, &hdr); - encode_link(&xdr, args->name, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); - encode_restorefh(&xdr, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_savefh(xdr, &hdr); + encode_putfh(xdr, args->dir_fh, &hdr); + encode_link(xdr, args->name, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); + encode_restorefh(xdr, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode CREATE request */ -static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args) +static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_create_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->dir_fh, &hdr); - encode_savefh(&xdr, &hdr); - encode_create(&xdr, args, &hdr); - encode_getfh(&xdr, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); - encode_restorefh(&xdr, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->dir_fh, &hdr); + encode_savefh(xdr, &hdr); + encode_create(xdr, args, &hdr); + encode_getfh(xdr, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); + encode_restorefh(xdr, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode SYMLINK request */ -static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args) +static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_create_arg *args) { - return nfs4_xdr_enc_create(req, p, args); + nfs4_xdr_enc_create(req, xdr, args); } /* * Encode GETATTR request */ -static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args) +static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_getattr_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode a CLOSE request */ -static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args) +static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_closeargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_close(&xdr, args, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_close(xdr, args, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode an OPEN request */ -static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args) +static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_openargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_savefh(&xdr, &hdr); - encode_open(&xdr, args, &hdr); - encode_getfh(&xdr, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); - encode_restorefh(&xdr, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_savefh(xdr, &hdr); + encode_open(xdr, args, &hdr); + encode_getfh(xdr, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); + encode_restorefh(xdr, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode an OPEN_CONFIRM request */ -static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args) +static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_open_confirmargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .nops = 0, }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_open_confirm(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_open_confirm(xdr, args, &hdr); encode_nops(&hdr); - return 0; } /* * Encode an OPEN request with no attributes. */ -static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args) +static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_openargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_open(&xdr, args, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_open(xdr, args, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode an OPEN_DOWNGRADE request */ -static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args) +static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_closeargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_open_downgrade(&xdr, args, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_open_downgrade(xdr, args, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode a LOCK request */ -static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args) +static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_lock_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_lock(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_lock(xdr, args, &hdr); encode_nops(&hdr); - return 0; } /* * Encode a LOCKT request */ -static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args) +static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_lockt_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_lockt(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_lockt(xdr, args, &hdr); encode_nops(&hdr); - return 0; } /* * Encode a LOCKU request */ -static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args) +static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_locku_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_locku(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_locku(xdr, args, &hdr); encode_nops(&hdr); - return 0; } -static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args) +static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_release_lockowner_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = 0, }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_release_lockowner(&xdr, &args->lock_owner, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_release_lockowner(xdr, &args->lock_owner, &hdr); encode_nops(&hdr); - return 0; } /* * Encode a READLINK request */ -static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args) +static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_readlink *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_readlink(&xdr, args, req, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_readlink(xdr, args, req, &hdr); xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, args->pgbase, args->pglen); encode_nops(&hdr); - return 0; } /* * Encode a READDIR request */ -static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args) +static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_readdir_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_readdir(&xdr, args, req, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_readdir(xdr, args, req, &hdr); xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, args->pgbase, args->count); @@ -2227,428 +2194,387 @@ static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nf __func__, hdr.replen << 2, args->pages, args->pgbase, args->count); encode_nops(&hdr); - return 0; } /* * Encode a READ request */ -static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) +static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_readargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_read(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_read(xdr, args, &hdr); xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, args->pgbase, args->count); req->rq_rcv_buf.flags |= XDRBUF_READ; encode_nops(&hdr); - return 0; } /* * Encode an SETATTR request */ -static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args) +static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_setattrargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_setattr(&xdr, args, args->server, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_setattr(xdr, args, args->server, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode a GETACL request */ -static int -nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p, - struct nfs_getaclargs *args) +static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_getaclargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; uint32_t replen; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1; - encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr); + encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); xdr_inline_pages(&req->rq_rcv_buf, replen << 2, args->acl_pages, args->acl_pgbase, args->acl_len); encode_nops(&hdr); - return 0; } /* * Encode a WRITE request */ -static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) +static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_writeargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_write(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_write(xdr, args, &hdr); req->rq_snd_buf.flags |= XDRBUF_WRITE; - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * a COMMIT request */ -static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) +static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_writeargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_commit(&xdr, args, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_commit(xdr, args, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * FSINFO request */ -static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args) +static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs4_fsinfo_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_fsinfo(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_fsinfo(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * a PATHCONF request */ -static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args) +static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_pathconf_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], &hdr); encode_nops(&hdr); - return 0; } /* * a STATFS request */ -static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args) +static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfs4_statfs_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); encode_nops(&hdr); - return 0; } /* * GETATTR_BITMAP request */ -static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, - struct nfs4_server_caps_arg *args) +static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_server_caps_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fhandle, &hdr); - encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS| + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fhandle, &hdr); + encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| FATTR4_WORD0_LINK_SUPPORT| FATTR4_WORD0_SYMLINK_SUPPORT| FATTR4_WORD0_ACLSUPPORT, &hdr); encode_nops(&hdr); - return 0; } /* * a RENEW request */ -static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp) +static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_client *clp) { - struct xdr_stream xdr; struct compound_hdr hdr = { .nops = 0, }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_renew(&xdr, clp, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_renew(xdr, clp, &hdr); encode_nops(&hdr); - return 0; } /* * a SETCLIENTID request */ -static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc) +static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_setclientid *sc) { - struct xdr_stream xdr; struct compound_hdr hdr = { .nops = 0, }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_setclientid(&xdr, sc, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_setclientid(xdr, sc, &hdr); encode_nops(&hdr); - return 0; } /* * a SETCLIENTID_CONFIRM request */ -static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg) +static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_setclientid_res *arg) { - struct xdr_stream xdr; struct compound_hdr hdr = { .nops = 0, }; const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_setclientid_confirm(&xdr, arg, &hdr); - encode_putrootfh(&xdr, &hdr); - encode_fsinfo(&xdr, lease_bitmap, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_setclientid_confirm(xdr, arg, &hdr); + encode_putrootfh(xdr, &hdr); + encode_fsinfo(xdr, lease_bitmap, &hdr); encode_nops(&hdr); - return 0; } /* * DELEGRETURN request */ -static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args) +static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs4_delegreturnargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fhandle, &hdr); - encode_delegreturn(&xdr, args->stateid, &hdr); - encode_getfattr(&xdr, args->bitmask, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fhandle, &hdr); + encode_delegreturn(xdr, args->stateid, &hdr); + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); - return 0; } /* * Encode FS_LOCATIONS request */ -static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args) +static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_fs_locations_arg *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; uint32_t replen; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->dir_fh, &hdr); - encode_lookup(&xdr, args->name, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->dir_fh, &hdr); + encode_lookup(xdr, args->name, &hdr); replen = hdr.replen; /* get the attribute into args->page */ - encode_fs_locations(&xdr, args->bitmask, &hdr); + encode_fs_locations(xdr, args->bitmask, &hdr); xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, 0, PAGE_SIZE); encode_nops(&hdr); - return 0; } #if defined(CONFIG_NFS_V4_1) /* * EXCHANGE_ID request */ -static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p, - struct nfs41_exchange_id_args *args) +static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs41_exchange_id_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = args->client->cl_mvops->minor_version, }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_exchange_id(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_exchange_id(xdr, args, &hdr); encode_nops(&hdr); - return 0; } /* * a CREATE_SESSION request */ -static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p, - struct nfs41_create_session_args *args) +static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs41_create_session_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = args->client->cl_mvops->minor_version, }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_create_session(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_create_session(xdr, args, &hdr); encode_nops(&hdr); - return 0; } /* * a DESTROY_SESSION request */ -static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p, - struct nfs4_session *session) +static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_session *session) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = session->clp->cl_mvops->minor_version, }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_destroy_session(&xdr, session, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_destroy_session(xdr, session, &hdr); encode_nops(&hdr); - return 0; } /* * a SEQUENCE request */ -static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p, - struct nfs4_sequence_args *args) +static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs4_sequence_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, args, &hdr); encode_nops(&hdr); - return 0; } /* * a GET_LEASE_TIME request */ -static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p, - struct nfs4_get_lease_time_args *args) +static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_get_lease_time_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), }; const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->la_seq_args, &hdr); - encode_putrootfh(&xdr, &hdr); - encode_fsinfo(&xdr, lease_bitmap, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->la_seq_args, &hdr); + encode_putrootfh(xdr, &hdr); + encode_fsinfo(xdr, lease_bitmap, &hdr); encode_nops(&hdr); - return 0; } /* * a RECLAIM_COMPLETE request */ -static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p, - struct nfs41_reclaim_complete_args *args) +static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs41_reclaim_complete_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args) }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_reclaim_complete(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_reclaim_complete(xdr, args, &hdr); encode_nops(&hdr); - return 0; } /* * Encode GETDEVICEINFO request */ -static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p, - struct nfs4_getdeviceinfo_args *args) +static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_getdeviceinfo_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_getdeviceinfo(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_getdeviceinfo(xdr, args, &hdr); /* set up reply kvec. Subtract notification bitmap max size (2) * so that notification bitmap is put in xdr_buf tail */ @@ -2657,27 +2583,24 @@ static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p, args->pdev->pglen); encode_nops(&hdr); - return 0; } /* * Encode LAYOUTGET request */ -static int nfs4_xdr_enc_layoutget(struct rpc_rqst *req, uint32_t *p, - struct nfs4_layoutget_args *args) +static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_layoutget_args *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, NFS_FH(args->inode), &hdr); - encode_layoutget(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, NFS_FH(args->inode), &hdr); + encode_layoutget(xdr, args, &hdr); encode_nops(&hdr); - return 0; } #endif /* CONFIG_NFS_V4_1 */ @@ -4475,7 +4398,7 @@ static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_ goto out_overflow; eof = be32_to_cpup(p++); count = be32_to_cpup(p); - hdrlen = (u8 *) p - (u8 *) iov->iov_base; + hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; recvd = req->rq_rcv_buf.len - hdrlen; if (count > recvd) { dprintk("NFS: server cheating in read reply: " @@ -5000,7 +4923,7 @@ static int decode_getdeviceinfo(struct xdr_stream *xdr, goto out_overflow; len = be32_to_cpup(p); if (len) { - int i; + uint32_t i; p = xdr_inline_decode(xdr, 4 * len); if (unlikely(!p)) @@ -5090,26 +5013,26 @@ out_overflow: /* * Decode OPEN_DOWNGRADE response */ -static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res) +static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nfs_closeres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_open_downgrade(&xdr, res); + status = decode_open_downgrade(xdr, res); if (status != 0) goto out; - decode_getfattr(&xdr, res->fattr, res->server, + decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5118,26 +5041,25 @@ out: /* * Decode ACCESS response */ -static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res) +static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs4_accessres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status != 0) goto out; - status = decode_access(&xdr, res); + status = decode_access(xdr, res); if (status != 0) goto out; - decode_getfattr(&xdr, res->fattr, res->server, + decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5146,26 +5068,28 @@ out: /* * Decode LOOKUP response */ -static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res) +static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs4_lookup_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - if ((status = decode_lookup(&xdr)) != 0) + status = decode_lookup(xdr); + if (status) goto out; - if ((status = decode_getfh(&xdr, res->fh)) != 0) + status = decode_getfh(xdr, res->fh); + if (status) goto out; - status = decode_getfattr(&xdr, res->fattr, res->server + status = decode_getfattr(xdr, res->fattr, res->server ,!RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5174,23 +5098,25 @@ out: /* * Decode LOOKUP_ROOT response */ -static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res) +static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nfs4_lookup_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - if ((status = decode_putrootfh(&xdr)) != 0) + status = decode_putrootfh(xdr); + if (status) goto out; - if ((status = decode_getfh(&xdr, res->fh)) == 0) - status = decode_getfattr(&xdr, res->fattr, res->server, + status = decode_getfh(xdr, res->fh); + if (status == 0) + status = decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5199,24 +5125,25 @@ out: /* * Decode REMOVE response */ -static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res) +static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_removeres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - if ((status = decode_remove(&xdr, &res->cinfo)) != 0) + status = decode_remove(xdr, &res->cinfo); + if (status) goto out; - decode_getfattr(&xdr, res->dir_attr, res->server, + decode_getfattr(xdr, res->dir_attr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5225,34 +5152,38 @@ out: /* * Decode RENAME response */ -static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res) +static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_renameres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - if ((status = decode_savefh(&xdr)) != 0) + status = decode_savefh(xdr); + if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0) + status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); + if (status) goto out; /* Current FH is target directory */ - if (decode_getfattr(&xdr, res->new_fattr, res->server, + if (decode_getfattr(xdr, res->new_fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)) != 0) goto out; - if ((status = decode_restorefh(&xdr)) != 0) + status = decode_restorefh(xdr); + if (status) goto out; - decode_getfattr(&xdr, res->old_fattr, res->server, + decode_getfattr(xdr, res->old_fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5261,37 +5192,41 @@ out: /* * Decode LINK response */ -static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res) +static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs4_link_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - if ((status = decode_savefh(&xdr)) != 0) + status = decode_savefh(xdr); + if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - if ((status = decode_link(&xdr, &res->cinfo)) != 0) + status = decode_link(xdr, &res->cinfo); + if (status) goto out; /* * Note order: OP_LINK leaves the directory as the current * filehandle. */ - if (decode_getfattr(&xdr, res->dir_attr, res->server, + if (decode_getfattr(xdr, res->dir_attr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)) != 0) goto out; - if ((status = decode_restorefh(&xdr)) != 0) + status = decode_restorefh(xdr); + if (status) goto out; - decode_getfattr(&xdr, res->fattr, res->server, + decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5300,33 +5235,37 @@ out: /* * Decode CREATE response */ -static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res) +static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs4_create_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - if ((status = decode_savefh(&xdr)) != 0) + status = decode_savefh(xdr); + if (status) goto out; - if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0) + status = decode_create(xdr, &res->dir_cinfo); + if (status) goto out; - if ((status = decode_getfh(&xdr, res->fh)) != 0) + status = decode_getfh(xdr, res->fh); + if (status) goto out; - if (decode_getfattr(&xdr, res->fattr, res->server, + if (decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)) != 0) goto out; - if ((status = decode_restorefh(&xdr)) != 0) + status = decode_restorefh(xdr); + if (status) goto out; - decode_getfattr(&xdr, res->dir_fattr, res->server, + decode_getfattr(xdr, res->dir_fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5335,31 +5274,31 @@ out: /* * Decode SYMLINK response */ -static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res) +static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs4_create_res *res) { - return nfs4_xdr_dec_create(rqstp, p, res); + return nfs4_xdr_dec_create(rqstp, xdr, res); } /* * Decode GETATTR response */ -static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res) +static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs4_getattr_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_getfattr(&xdr, res->fattr, res->server, + status = decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5368,46 +5307,40 @@ out: /* * Encode an SETACL request */ -static int -nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args) +static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, + struct nfs_setaclargs *args) { - struct xdr_stream xdr; struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; - int status; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_compound_hdr(&xdr, req, &hdr); - encode_sequence(&xdr, &args->seq_args, &hdr); - encode_putfh(&xdr, args->fh, &hdr); - status = encode_setacl(&xdr, args, &hdr); + encode_compound_hdr(xdr, req, &hdr); + encode_sequence(xdr, &args->seq_args, &hdr); + encode_putfh(xdr, args->fh, &hdr); + encode_setacl(xdr, args, &hdr); encode_nops(&hdr); - return status; } /* * Decode SETACL response */ static int -nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, +nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, struct nfs_setaclres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_setattr(&xdr); + status = decode_setattr(xdr); out: return status; } @@ -5416,24 +5349,22 @@ out: * Decode GETACL response */ static int -nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, +nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, struct nfs_getaclres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_getacl(&xdr, rqstp, &res->acl_len); + status = decode_getacl(xdr, rqstp, &res->acl_len); out: return status; @@ -5442,23 +5373,22 @@ out: /* * Decode CLOSE response */ -static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res) +static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_closeres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_close(&xdr, res); + status = decode_close(xdr, res); if (status != 0) goto out; /* @@ -5467,7 +5397,7 @@ static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_clos * an ESTALE error. Shouldn't be a problem, * though, since fattr->valid will remain unset. */ - decode_getfattr(&xdr, res->fattr, res->server, + decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5476,36 +5406,35 @@ out: /* * Decode OPEN response */ -static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res) +static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_openres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_savefh(&xdr); + status = decode_savefh(xdr); if (status) goto out; - status = decode_open(&xdr, res); + status = decode_open(xdr, res); if (status) goto out; - if (decode_getfh(&xdr, &res->fh) != 0) + if (decode_getfh(xdr, &res->fh) != 0) goto out; - if (decode_getfattr(&xdr, res->f_attr, res->server, + if (decode_getfattr(xdr, res->f_attr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)) != 0) goto out; - if (decode_restorefh(&xdr) != 0) + if (decode_restorefh(xdr) != 0) goto out; - decode_getfattr(&xdr, res->dir_attr, res->server, + decode_getfattr(xdr, res->dir_attr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5514,20 +5443,20 @@ out: /* * Decode OPEN_CONFIRM response */ -static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res) +static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nfs_open_confirmres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_open_confirm(&xdr, res); + status = decode_open_confirm(xdr, res); out: return status; } @@ -5535,26 +5464,26 @@ out: /* * Decode OPEN response */ -static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res) +static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nfs_openres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_open(&xdr, res); + status = decode_open(xdr, res); if (status) goto out; - decode_getfattr(&xdr, res->f_attr, res->server, + decode_getfattr(xdr, res->f_attr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5563,26 +5492,26 @@ out: /* * Decode SETATTR response */ -static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res) +static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nfs_setattrres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_setattr(&xdr); + status = decode_setattr(xdr); if (status) goto out; - decode_getfattr(&xdr, res->fattr, res->server, + decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5591,23 +5520,22 @@ out: /* * Decode LOCK response */ -static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res) +static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_lock_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_lock(&xdr, res); + status = decode_lock(xdr, res); out: return status; } @@ -5615,23 +5543,22 @@ out: /* * Decode LOCKT response */ -static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res) +static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_lockt_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_lockt(&xdr, res); + status = decode_lockt(xdr, res); out: return status; } @@ -5639,61 +5566,58 @@ out: /* * Decode LOCKU response */ -static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res) +static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_locku_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_locku(&xdr, res); + status = decode_locku(xdr, res); out: return status; } -static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy) +static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, void *dummy) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_release_lockowner(&xdr); + status = decode_release_lockowner(xdr); return status; } /* * Decode READLINK response */ -static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, +static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, struct nfs4_readlink_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_readlink(&xdr, rqstp); + status = decode_readlink(xdr, rqstp); out: return status; } @@ -5701,23 +5625,22 @@ out: /* * Decode READDIR response */ -static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res) +static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs4_readdir_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_readdir(&xdr, rqstp, res); + status = decode_readdir(xdr, rqstp, res); out: return status; } @@ -5725,23 +5648,22 @@ out: /* * Decode Read response */ -static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res) +static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_readres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_read(&xdr, rqstp, res); + status = decode_read(xdr, rqstp, res); if (!status) status = res->count; out: @@ -5751,26 +5673,25 @@ out: /* * Decode WRITE response */ -static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res) +static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_writeres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_write(&xdr, res); + status = decode_write(xdr, res); if (status) goto out; - decode_getfattr(&xdr, res->fattr, res->server, + decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); if (!status) status = res->count; @@ -5781,26 +5702,25 @@ out: /* * Decode COMMIT response */ -static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res) +static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + struct nfs_writeres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_commit(&xdr, res); + status = decode_commit(xdr, res); if (status) goto out; - decode_getfattr(&xdr, res->fattr, res->server, + decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5809,85 +5729,80 @@ out: /* * Decode FSINFO response */ -static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, +static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, struct nfs4_fsinfo_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_sequence(&xdr, &res->seq_res, req); + status = decode_sequence(xdr, &res->seq_res, req); if (!status) - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (!status) - status = decode_fsinfo(&xdr, res->fsinfo); + status = decode_fsinfo(xdr, res->fsinfo); return status; } /* * Decode PATHCONF response */ -static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, +static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, struct nfs4_pathconf_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_sequence(&xdr, &res->seq_res, req); + status = decode_sequence(xdr, &res->seq_res, req); if (!status) - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (!status) - status = decode_pathconf(&xdr, res->pathconf); + status = decode_pathconf(xdr, res->pathconf); return status; } /* * Decode STATFS response */ -static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, +static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, struct nfs4_statfs_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_sequence(&xdr, &res->seq_res, req); + status = decode_sequence(xdr, &res->seq_res, req); if (!status) - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (!status) - status = decode_statfs(&xdr, res->fsstat); + status = decode_statfs(xdr, res->fsstat); return status; } /* * Decode GETATTR_BITMAP response */ -static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res) +static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_server_caps_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, req); + status = decode_sequence(xdr, &res->seq_res, req); if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - status = decode_server_caps(&xdr, res); + status = decode_server_caps(xdr, res); out: return status; } @@ -5895,79 +5810,77 @@ out: /* * Decode RENEW response */ -static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy) +static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, + void *__unused) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_renew(&xdr); + status = decode_renew(xdr); return status; } /* * Decode SETCLIENTID response */ -static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p, - struct nfs4_setclientid_res *res) +static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs4_setclientid_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_setclientid(&xdr, res); + status = decode_setclientid(xdr, res); return status; } /* * Decode SETCLIENTID_CONFIRM response */ -static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo) +static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, + struct xdr_stream *xdr, + struct nfs_fsinfo *fsinfo) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_setclientid_confirm(&xdr); + status = decode_setclientid_confirm(xdr); if (!status) - status = decode_putrootfh(&xdr); + status = decode_putrootfh(xdr); if (!status) - status = decode_fsinfo(&xdr, fsinfo); + status = decode_fsinfo(xdr, fsinfo); return status; } /* * Decode DELEGRETURN response */ -static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res) +static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nfs4_delegreturnres *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status != 0) goto out; - status = decode_delegreturn(&xdr); + status = decode_delegreturn(xdr); if (status != 0) goto out; - decode_getfattr(&xdr, res->fattr, res->server, + decode_getfattr(xdr, res->fattr, res->server, !RPC_IS_ASYNC(rqstp->rq_task)); out: return status; @@ -5976,26 +5889,27 @@ out: /* * Decode FS_LOCATIONS response */ -static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, +static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, + struct xdr_stream *xdr, struct nfs4_fs_locations_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &req->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, req); + status = decode_sequence(xdr, &res->seq_res, req); if (status) goto out; - if ((status = decode_putfh(&xdr)) != 0) + status = decode_putfh(xdr); + if (status) goto out; - if ((status = decode_lookup(&xdr)) != 0) + status = decode_lookup(xdr); + if (status) goto out; - xdr_enter_page(&xdr, PAGE_SIZE); - status = decode_getfattr(&xdr, &res->fs_locations->fattr, + xdr_enter_page(xdr, PAGE_SIZE); + status = decode_getfattr(xdr, &res->fs_locations->fattr, res->fs_locations->server, !RPC_IS_ASYNC(req->rq_task)); out: @@ -6006,129 +5920,122 @@ out: /* * Decode EXCHANGE_ID response */ -static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p, +static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, void *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_exchange_id(&xdr, res); + status = decode_exchange_id(xdr, res); return status; } /* * Decode CREATE_SESSION response */ -static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p, +static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, struct nfs41_create_session_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_create_session(&xdr, res); + status = decode_create_session(xdr, res); return status; } /* * Decode DESTROY_SESSION response */ -static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p, - void *dummy) +static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + void *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_destroy_session(&xdr, dummy); + status = decode_destroy_session(xdr, res); return status; } /* * Decode SEQUENCE response */ -static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p, +static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, struct nfs4_sequence_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_sequence(&xdr, res, rqstp); + status = decode_sequence(xdr, res, rqstp); return status; } /* * Decode GET_LEASE_TIME response */ -static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p, +static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, struct nfs4_get_lease_time_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_sequence(&xdr, &res->lr_seq_res, rqstp); + status = decode_sequence(xdr, &res->lr_seq_res, rqstp); if (!status) - status = decode_putrootfh(&xdr); + status = decode_putrootfh(xdr); if (!status) - status = decode_fsinfo(&xdr, res->lr_fsinfo); + status = decode_fsinfo(xdr, res->lr_fsinfo); return status; } /* * Decode RECLAIM_COMPLETE response */ -static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p, +static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, struct nfs41_reclaim_complete_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (!status) - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (!status) - status = decode_reclaim_complete(&xdr, (void *)NULL); + status = decode_reclaim_complete(xdr, (void *)NULL); return status; } /* * Decode GETDEVINFO response */ -static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, uint32_t *p, +static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, struct nfs4_getdeviceinfo_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status != 0) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status != 0) goto out; - status = decode_getdeviceinfo(&xdr, res->pdev); + status = decode_getdeviceinfo(xdr, res->pdev); out: return status; } @@ -6136,31 +6043,44 @@ out: /* * Decode LAYOUTGET response */ -static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, uint32_t *p, +static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, struct nfs4_layoutget_res *res) { - struct xdr_stream xdr; struct compound_hdr hdr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_compound_hdr(&xdr, &hdr); + status = decode_compound_hdr(xdr, &hdr); if (status) goto out; - status = decode_sequence(&xdr, &res->seq_res, rqstp); + status = decode_sequence(xdr, &res->seq_res, rqstp); if (status) goto out; - status = decode_putfh(&xdr); + status = decode_putfh(xdr); if (status) goto out; - status = decode_layoutget(&xdr, rqstp, res); + status = decode_layoutget(xdr, rqstp, res); out: return status; } #endif /* CONFIG_NFS_V4_1 */ -__be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, - struct nfs_server *server, int plus) +/** + * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in + * the local page cache. + * @xdr: XDR stream where entry resides + * @entry: buffer to fill in with entry data + * @plus: boolean indicating whether this should be a readdirplus entry + * + * Returns zero if successful, otherwise a negative errno value is + * returned. + * + * This function is not invoked during READDIR reply decoding, but + * rather whenever an application invokes the getdents(2) system call + * on a directory already in our cache. + */ +int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, + int plus) { uint32_t bitmap[2] = {0}; uint32_t len; @@ -6172,9 +6092,9 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, if (unlikely(!p)) goto out_overflow; if (!ntohl(*p++)) - return ERR_PTR(-EAGAIN); + return -EAGAIN; entry->eof = 1; - return ERR_PTR(-EBADCOOKIE); + return -EBADCOOKIE; } p = xdr_inline_decode(xdr, 12); @@ -6203,7 +6123,8 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, if (decode_attr_length(xdr, &len, &p) < 0) goto out_overflow; - if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0) + if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, + entry->server, 1) < 0) goto out_overflow; if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) entry->ino = entry->fattr->fileid; @@ -6221,11 +6142,11 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, else entry->eof = 0; - return p; + return 0; out_overflow: print_overflow_msg(__func__, xdr); - return ERR_PTR(-EAGAIN); + return -EAGAIN; } /* @@ -6301,8 +6222,8 @@ nfs4_stat_to_errno(int stat) #define PROC(proc, argtype, restype) \ [NFSPROC4_CLNT_##proc] = { \ .p_proc = NFSPROC4_COMPOUND, \ - .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \ - .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \ + .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \ + .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \ .p_arglen = NFS4_##argtype##_sz, \ .p_replen = NFS4_##restype##_sz, \ .p_statidx = NFSPROC4_CLNT_##proc, \ @@ -6310,50 +6231,50 @@ nfs4_stat_to_errno(int stat) } struct rpc_procinfo nfs4_procedures[] = { - PROC(READ, enc_read, dec_read), - PROC(WRITE, enc_write, dec_write), - PROC(COMMIT, enc_commit, dec_commit), - PROC(OPEN, enc_open, dec_open), - PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), - PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), - PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), - PROC(CLOSE, enc_close, dec_close), - PROC(SETATTR, enc_setattr, dec_setattr), - PROC(FSINFO, enc_fsinfo, dec_fsinfo), - PROC(RENEW, enc_renew, dec_renew), - PROC(SETCLIENTID, enc_setclientid, dec_setclientid), - PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), - PROC(LOCK, enc_lock, dec_lock), - PROC(LOCKT, enc_lockt, dec_lockt), - PROC(LOCKU, enc_locku, dec_locku), - PROC(ACCESS, enc_access, dec_access), - PROC(GETATTR, enc_getattr, dec_getattr), - PROC(LOOKUP, enc_lookup, dec_lookup), - PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), - PROC(REMOVE, enc_remove, dec_remove), - PROC(RENAME, enc_rename, dec_rename), - PROC(LINK, enc_link, dec_link), - PROC(SYMLINK, enc_symlink, dec_symlink), - PROC(CREATE, enc_create, dec_create), - PROC(PATHCONF, enc_pathconf, dec_pathconf), - PROC(STATFS, enc_statfs, dec_statfs), - PROC(READLINK, enc_readlink, dec_readlink), - PROC(READDIR, enc_readdir, dec_readdir), - PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), - PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), - PROC(GETACL, enc_getacl, dec_getacl), - PROC(SETACL, enc_setacl, dec_setacl), - PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), - PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), + PROC(READ, enc_read, dec_read), + PROC(WRITE, enc_write, dec_write), + PROC(COMMIT, enc_commit, dec_commit), + PROC(OPEN, enc_open, dec_open), + PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), + PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), + PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), + PROC(CLOSE, enc_close, dec_close), + PROC(SETATTR, enc_setattr, dec_setattr), + PROC(FSINFO, enc_fsinfo, dec_fsinfo), + PROC(RENEW, enc_renew, dec_renew), + PROC(SETCLIENTID, enc_setclientid, dec_setclientid), + PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), + PROC(LOCK, enc_lock, dec_lock), + PROC(LOCKT, enc_lockt, dec_lockt), + PROC(LOCKU, enc_locku, dec_locku), + PROC(ACCESS, enc_access, dec_access), + PROC(GETATTR, enc_getattr, dec_getattr), + PROC(LOOKUP, enc_lookup, dec_lookup), + PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), + PROC(REMOVE, enc_remove, dec_remove), + PROC(RENAME, enc_rename, dec_rename), + PROC(LINK, enc_link, dec_link), + PROC(SYMLINK, enc_symlink, dec_symlink), + PROC(CREATE, enc_create, dec_create), + PROC(PATHCONF, enc_pathconf, dec_pathconf), + PROC(STATFS, enc_statfs, dec_statfs), + PROC(READLINK, enc_readlink, dec_readlink), + PROC(READDIR, enc_readdir, dec_readdir), + PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), + PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), + PROC(GETACL, enc_getacl, dec_getacl), + PROC(SETACL, enc_setacl, dec_setacl), + PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), + PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), #if defined(CONFIG_NFS_V4_1) - PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), - PROC(CREATE_SESSION, enc_create_session, dec_create_session), - PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), - PROC(SEQUENCE, enc_sequence, dec_sequence), - PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), - PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), - PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), - PROC(LAYOUTGET, enc_layoutget, dec_layoutget), + PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), + PROC(CREATE_SESSION, enc_create_session, dec_create_session), + PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), + PROC(SEQUENCE, enc_sequence, dec_sequence), + PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), + PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), + PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), + PROC(LAYOUTGET, enc_layoutget, dec_layoutget), #endif /* CONFIG_NFS_V4_1 */ }; diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index b68536cc9046..e1164e3f9e69 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -26,12 +26,9 @@ static struct kmem_cache *nfs_page_cachep; static inline struct nfs_page * nfs_page_alloc(void) { - struct nfs_page *p; - p = kmem_cache_alloc(nfs_page_cachep, GFP_KERNEL); - if (p) { - memset(p, 0, sizeof(*p)); + struct nfs_page *p = kmem_cache_zalloc(nfs_page_cachep, GFP_KERNEL); + if (p) INIT_LIST_HEAD(&p->wb_list); - } return p; } diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 58e7f84fc1fd..77d5e21c4ad6 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -458,7 +458,7 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, fattr = nfs_alloc_fattr(); status = -ENOMEM; if (fh == NULL || fattr == NULL) - goto out; + goto out_free; status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); nfs_mark_for_revalidate(dir); @@ -471,6 +471,7 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, if (status == 0) status = nfs_instantiate(dentry, fh, fattr); +out_free: nfs_free_fattr(fattr); nfs_free_fhandle(fh); out: @@ -731,7 +732,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .statfs = nfs_proc_statfs, .fsinfo = nfs_proc_fsinfo, .pathconf = nfs_proc_pathconf, - .decode_dirent = nfs_decode_dirent, + .decode_dirent = nfs2_decode_dirent, .read_setup = nfs_proc_read_setup, .read_done = nfs_read_done, .write_setup = nfs_proc_write_setup, diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 4100630c9a5b..0f9ea73e7789 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -598,7 +598,9 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss, if (nfss->mountd_version || showdefaults) seq_printf(m, ",mountvers=%u", nfss->mountd_version); - if (nfss->mountd_port || showdefaults) + if ((nfss->mountd_port && + nfss->mountd_port != (unsigned short)NFS_UNSPEC_PORT) || + showdefaults) seq_printf(m, ",mountport=%u", nfss->mountd_port); nfs_show_mountd_netid(m, nfss, showdefaults); @@ -2494,7 +2496,13 @@ static void nfs4_clone_super(struct super_block *sb, sb->s_maxbytes = old_sb->s_maxbytes; sb->s_time_gran = 1; sb->s_op = old_sb->s_op; - nfs_initialise_sb(sb); + /* + * The VFS shouldn't apply the umask to mode bits. We will do + * so ourselves when necessary. + */ + sb->s_flags |= MS_POSIXACL; + sb->s_xattr = old_sb->s_xattr; + nfs_initialise_sb(sb); } /* @@ -2504,6 +2512,12 @@ static void nfs4_fill_super(struct super_block *sb) { sb->s_time_gran = 1; sb->s_op = &nfs4_sops; + /* + * The VFS shouldn't apply the umask to mode bits. We will do + * so ourselves when necessary. + */ + sb->s_flags |= MS_POSIXACL; + sb->s_xattr = nfs4_xattr_handlers; nfs_initialise_sb(sb); } diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 7bdec8531400..3bf1e53c4a3f 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -429,7 +429,7 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir, data = kzalloc(sizeof(*data), GFP_KERNEL); if (data == NULL) return ERR_PTR(-ENOMEM); - task_setup_data.callback_data = data, + task_setup_data.callback_data = data; data->cred = rpc_lookup_cred(); if (IS_ERR(data->cred)) { diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 143da2eecd7b..21a63da305ff 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -50,11 +50,6 @@ enum { NFSPROC4_CLNT_CB_SEQUENCE, }; -enum nfs_cb_opnum4 { - OP_CB_RECALL = 4, - OP_CB_SEQUENCE = 11, -}; - #define NFS4_MAXTAGLEN 20 #define NFS4_enc_cb_null_sz 0 @@ -79,61 +74,6 @@ enum nfs_cb_opnum4 { cb_sequence_dec_sz + \ op_dec_sz) -/* -* Generic encode routines from fs/nfs/nfs4xdr.c -*/ -static inline __be32 * -xdr_writemem(__be32 *p, const void *ptr, int nbytes) -{ - int tmp = XDR_QUADLEN(nbytes); - if (!tmp) - return p; - p[tmp-1] = 0; - memcpy(p, ptr, nbytes); - return p + tmp; -} - -#define WRITE32(n) *p++ = htonl(n) -#define WRITEMEM(ptr,nbytes) do { \ - p = xdr_writemem(p, ptr, nbytes); \ -} while (0) -#define RESERVE_SPACE(nbytes) do { \ - p = xdr_reserve_space(xdr, nbytes); \ - if (!p) dprintk("NFSD: RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __func__); \ - BUG_ON(!p); \ -} while (0) - -/* - * Generic decode routines from fs/nfs/nfs4xdr.c - */ -#define DECODE_TAIL \ - status = 0; \ -out: \ - return status; \ -xdr_error: \ - dprintk("NFSD: xdr error! (%s:%d)\n", __FILE__, __LINE__); \ - status = -EIO; \ - goto out - -#define READ32(x) (x) = ntohl(*p++) -#define READ64(x) do { \ - (x) = (u64)ntohl(*p++) << 32; \ - (x) |= ntohl(*p++); \ -} while (0) -#define READTIME(x) do { \ - p++; \ - (x.tv_sec) = ntohl(*p++); \ - (x.tv_nsec) = ntohl(*p++); \ -} while (0) -#define READ_BUF(nbytes) do { \ - p = xdr_inline_decode(xdr, nbytes); \ - if (!p) { \ - dprintk("NFSD: %s: reply buffer overflowed in line %d.\n", \ - __func__, __LINE__); \ - return -EIO; \ - } \ -} while (0) - struct nfs4_cb_compound_hdr { /* args */ u32 ident; /* minorversion 0 only */ @@ -144,295 +84,513 @@ struct nfs4_cb_compound_hdr { int status; }; -static struct { -int stat; -int errno; -} nfs_cb_errtbl[] = { - { NFS4_OK, 0 }, - { NFS4ERR_PERM, EPERM }, - { NFS4ERR_NOENT, ENOENT }, - { NFS4ERR_IO, EIO }, - { NFS4ERR_NXIO, ENXIO }, - { NFS4ERR_ACCESS, EACCES }, - { NFS4ERR_EXIST, EEXIST }, - { NFS4ERR_XDEV, EXDEV }, - { NFS4ERR_NOTDIR, ENOTDIR }, - { NFS4ERR_ISDIR, EISDIR }, - { NFS4ERR_INVAL, EINVAL }, - { NFS4ERR_FBIG, EFBIG }, - { NFS4ERR_NOSPC, ENOSPC }, - { NFS4ERR_ROFS, EROFS }, - { NFS4ERR_MLINK, EMLINK }, - { NFS4ERR_NAMETOOLONG, ENAMETOOLONG }, - { NFS4ERR_NOTEMPTY, ENOTEMPTY }, - { NFS4ERR_DQUOT, EDQUOT }, - { NFS4ERR_STALE, ESTALE }, - { NFS4ERR_BADHANDLE, EBADHANDLE }, - { NFS4ERR_BAD_COOKIE, EBADCOOKIE }, - { NFS4ERR_NOTSUPP, ENOTSUPP }, - { NFS4ERR_TOOSMALL, ETOOSMALL }, - { NFS4ERR_SERVERFAULT, ESERVERFAULT }, - { NFS4ERR_BADTYPE, EBADTYPE }, - { NFS4ERR_LOCKED, EAGAIN }, - { NFS4ERR_RESOURCE, EREMOTEIO }, - { NFS4ERR_SYMLINK, ELOOP }, - { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP }, - { NFS4ERR_DEADLOCK, EDEADLK }, - { -1, EIO } -}; +/* + * Handle decode buffer overflows out-of-line. + */ +static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) +{ + dprintk("NFS: %s prematurely hit the end of our receive buffer. " + "Remaining buffer length is %tu words.\n", + func, xdr->end - xdr->p); +} -static int -nfs_cb_stat_to_errno(int stat) +static __be32 *xdr_encode_empty_array(__be32 *p) { - int i; - for (i = 0; nfs_cb_errtbl[i].stat != -1; i++) { - if (nfs_cb_errtbl[i].stat == stat) - return nfs_cb_errtbl[i].errno; - } - /* If we cannot translate the error, the recovery routines should - * handle it. - * Note: remaining NFSv4 error codes have values > 10000, so should - * not conflict with native Linux error codes. - */ - return stat; + *p++ = xdr_zero; + return p; } /* - * XDR encode + * Encode/decode NFSv4 CB basic data types + * + * Basic NFSv4 callback data types are defined in section 15 of RFC + * 3530: "Network File System (NFS) version 4 Protocol" and section + * 20 of RFC 5661: "Network File System (NFS) Version 4 Minor Version + * 1 Protocol" + */ + +/* + * nfs_cb_opnum4 + * + * enum nfs_cb_opnum4 { + * OP_CB_GETATTR = 3, + * ... + * }; */ +enum nfs_cb_opnum4 { + OP_CB_GETATTR = 3, + OP_CB_RECALL = 4, + OP_CB_LAYOUTRECALL = 5, + OP_CB_NOTIFY = 6, + OP_CB_PUSH_DELEG = 7, + OP_CB_RECALL_ANY = 8, + OP_CB_RECALLABLE_OBJ_AVAIL = 9, + OP_CB_RECALL_SLOT = 10, + OP_CB_SEQUENCE = 11, + OP_CB_WANTS_CANCELLED = 12, + OP_CB_NOTIFY_LOCK = 13, + OP_CB_NOTIFY_DEVICEID = 14, + OP_CB_ILLEGAL = 10044 +}; -static void -encode_stateid(struct xdr_stream *xdr, stateid_t *sid) +static void encode_nfs_cb_opnum4(struct xdr_stream *xdr, enum nfs_cb_opnum4 op) { __be32 *p; - RESERVE_SPACE(sizeof(stateid_t)); - WRITE32(sid->si_generation); - WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); + p = xdr_reserve_space(xdr, 4); + *p = cpu_to_be32(op); } -static void -encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr) +/* + * nfs_fh4 + * + * typedef opaque nfs_fh4<NFS4_FHSIZE>; + */ +static void encode_nfs_fh4(struct xdr_stream *xdr, const struct knfsd_fh *fh) { - __be32 * p; + u32 length = fh->fh_size; + __be32 *p; - RESERVE_SPACE(16); - WRITE32(0); /* tag length is always 0 */ - WRITE32(hdr->minorversion); - WRITE32(hdr->ident); - hdr->nops_p = p; - WRITE32(hdr->nops); + BUG_ON(length > NFS4_FHSIZE); + p = xdr_reserve_space(xdr, 4 + length); + xdr_encode_opaque(p, &fh->fh_base, length); } -static void encode_cb_nops(struct nfs4_cb_compound_hdr *hdr) +/* + * stateid4 + * + * struct stateid4 { + * uint32_t seqid; + * opaque other[12]; + * }; + */ +static void encode_stateid4(struct xdr_stream *xdr, const stateid_t *sid) { - *hdr->nops_p = htonl(hdr->nops); + __be32 *p; + + p = xdr_reserve_space(xdr, NFS4_STATEID_SIZE); + *p++ = cpu_to_be32(sid->si_generation); + xdr_encode_opaque_fixed(p, &sid->si_opaque, NFS4_STATEID_OTHER_SIZE); } -static void -encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp, - struct nfs4_cb_compound_hdr *hdr) +/* + * sessionid4 + * + * typedef opaque sessionid4[NFS4_SESSIONID_SIZE]; + */ +static void encode_sessionid4(struct xdr_stream *xdr, + const struct nfsd4_session *session) { __be32 *p; - int len = dp->dl_fh.fh_size; - - RESERVE_SPACE(4); - WRITE32(OP_CB_RECALL); - encode_stateid(xdr, &dp->dl_stateid); - RESERVE_SPACE(8 + (XDR_QUADLEN(len) << 2)); - WRITE32(0); /* truncate optimization not implemented */ - WRITE32(len); - WRITEMEM(&dp->dl_fh.fh_base, len); - hdr->nops++; + + p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN); + xdr_encode_opaque_fixed(p, session->se_sessionid.data, + NFS4_MAX_SESSIONID_LEN); } -static void -encode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb, - struct nfs4_cb_compound_hdr *hdr) -{ - __be32 *p; - struct nfsd4_session *ses = cb->cb_clp->cl_cb_session; +/* + * nfsstat4 + */ +static const struct { + int stat; + int errno; +} nfs_cb_errtbl[] = { + { NFS4_OK, 0 }, + { NFS4ERR_PERM, -EPERM }, + { NFS4ERR_NOENT, -ENOENT }, + { NFS4ERR_IO, -EIO }, + { NFS4ERR_NXIO, -ENXIO }, + { NFS4ERR_ACCESS, -EACCES }, + { NFS4ERR_EXIST, -EEXIST }, + { NFS4ERR_XDEV, -EXDEV }, + { NFS4ERR_NOTDIR, -ENOTDIR }, + { NFS4ERR_ISDIR, -EISDIR }, + { NFS4ERR_INVAL, -EINVAL }, + { NFS4ERR_FBIG, -EFBIG }, + { NFS4ERR_NOSPC, -ENOSPC }, + { NFS4ERR_ROFS, -EROFS }, + { NFS4ERR_MLINK, -EMLINK }, + { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, + { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, + { NFS4ERR_DQUOT, -EDQUOT }, + { NFS4ERR_STALE, -ESTALE }, + { NFS4ERR_BADHANDLE, -EBADHANDLE }, + { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, + { NFS4ERR_NOTSUPP, -ENOTSUPP }, + { NFS4ERR_TOOSMALL, -ETOOSMALL }, + { NFS4ERR_SERVERFAULT, -ESERVERFAULT }, + { NFS4ERR_BADTYPE, -EBADTYPE }, + { NFS4ERR_LOCKED, -EAGAIN }, + { NFS4ERR_RESOURCE, -EREMOTEIO }, + { NFS4ERR_SYMLINK, -ELOOP }, + { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, + { NFS4ERR_DEADLOCK, -EDEADLK }, + { -1, -EIO } +}; - if (hdr->minorversion == 0) - return; +/* + * If we cannot translate the error, the recovery routines should + * handle it. + * + * Note: remaining NFSv4 error codes have values > 10000, so should + * not conflict with native Linux error codes. + */ +static int nfs_cb_stat_to_errno(int status) +{ + int i; - RESERVE_SPACE(1 + NFS4_MAX_SESSIONID_LEN + 20); + for (i = 0; nfs_cb_errtbl[i].stat != -1; i++) { + if (nfs_cb_errtbl[i].stat == status) + return nfs_cb_errtbl[i].errno; + } - WRITE32(OP_CB_SEQUENCE); - WRITEMEM(ses->se_sessionid.data, NFS4_MAX_SESSIONID_LEN); - WRITE32(ses->se_cb_seq_nr); - WRITE32(0); /* slotid, always 0 */ - WRITE32(0); /* highest slotid always 0 */ - WRITE32(0); /* cachethis always 0 */ - WRITE32(0); /* FIXME: support referring_call_lists */ - hdr->nops++; + dprintk("NFSD: Unrecognized NFS CB status value: %u\n", status); + return -status; } -static int -nfs4_xdr_enc_cb_null(struct rpc_rqst *req, __be32 *p) +static int decode_cb_op_status(struct xdr_stream *xdr, enum nfs_opnum4 expected, + enum nfsstat4 *status) { - struct xdr_stream xdrs, *xdr = &xdrs; + __be32 *p; + u32 op; - xdr_init_encode(&xdrs, &req->rq_snd_buf, p); - RESERVE_SPACE(0); + p = xdr_inline_decode(xdr, 4 + 4); + if (unlikely(p == NULL)) + goto out_overflow; + op = be32_to_cpup(p++); + if (unlikely(op != expected)) + goto out_unexpected; + *status = be32_to_cpup(p); return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +out_unexpected: + dprintk("NFSD: Callback server returned operation %d but " + "we issued a request for %d\n", op, expected); + return -EIO; } -static int -nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, - struct nfsd4_callback *cb) +/* + * CB_COMPOUND4args + * + * struct CB_COMPOUND4args { + * utf8str_cs tag; + * uint32_t minorversion; + * uint32_t callback_ident; + * nfs_cb_argop4 argarray<>; + * }; +*/ +static void encode_cb_compound4args(struct xdr_stream *xdr, + struct nfs4_cb_compound_hdr *hdr) { - struct xdr_stream xdr; - struct nfs4_delegation *args = cb->cb_op; - struct nfs4_cb_compound_hdr hdr = { - .ident = cb->cb_clp->cl_cb_ident, - .minorversion = cb->cb_minorversion, - }; + __be32 * p; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_cb_compound_hdr(&xdr, &hdr); - encode_cb_sequence(&xdr, cb, &hdr); - encode_cb_recall(&xdr, args, &hdr); - encode_cb_nops(&hdr); + p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4); + p = xdr_encode_empty_array(p); /* empty tag */ + *p++ = cpu_to_be32(hdr->minorversion); + *p++ = cpu_to_be32(hdr->ident); + + hdr->nops_p = p; + *p = cpu_to_be32(hdr->nops); /* argarray element count */ +} + +/* + * Update argarray element count + */ +static void encode_cb_nops(struct nfs4_cb_compound_hdr *hdr) +{ + BUG_ON(hdr->nops > NFS4_MAX_BACK_CHANNEL_OPS); + *hdr->nops_p = cpu_to_be32(hdr->nops); +} + +/* + * CB_COMPOUND4res + * + * struct CB_COMPOUND4res { + * nfsstat4 status; + * utf8str_cs tag; + * nfs_cb_resop4 resarray<>; + * }; + */ +static int decode_cb_compound4res(struct xdr_stream *xdr, + struct nfs4_cb_compound_hdr *hdr) +{ + u32 length; + __be32 *p; + + p = xdr_inline_decode(xdr, 4 + 4); + if (unlikely(p == NULL)) + goto out_overflow; + hdr->status = be32_to_cpup(p++); + /* Ignore the tag */ + length = be32_to_cpup(p++); + p = xdr_inline_decode(xdr, length + 4); + if (unlikely(p == NULL)) + goto out_overflow; + hdr->nops = be32_to_cpup(p); return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; } +/* + * CB_RECALL4args + * + * struct CB_RECALL4args { + * stateid4 stateid; + * bool truncate; + * nfs_fh4 fh; + * }; + */ +static void encode_cb_recall4args(struct xdr_stream *xdr, + const struct nfs4_delegation *dp, + struct nfs4_cb_compound_hdr *hdr) +{ + __be32 *p; + + encode_nfs_cb_opnum4(xdr, OP_CB_RECALL); + encode_stateid4(xdr, &dp->dl_stateid); + + p = xdr_reserve_space(xdr, 4); + *p++ = xdr_zero; /* truncate */ -static int -decode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr){ - __be32 *p; - u32 taglen; + encode_nfs_fh4(xdr, &dp->dl_fh); - READ_BUF(8); - READ32(hdr->status); - /* We've got no use for the tag; ignore it: */ - READ32(taglen); - READ_BUF(taglen + 4); - p += XDR_QUADLEN(taglen); - READ32(hdr->nops); - return 0; + hdr->nops++; } -static int -decode_cb_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) +/* + * CB_SEQUENCE4args + * + * struct CB_SEQUENCE4args { + * sessionid4 csa_sessionid; + * sequenceid4 csa_sequenceid; + * slotid4 csa_slotid; + * slotid4 csa_highest_slotid; + * bool csa_cachethis; + * referring_call_list4 csa_referring_call_lists<>; + * }; + */ +static void encode_cb_sequence4args(struct xdr_stream *xdr, + const struct nfsd4_callback *cb, + struct nfs4_cb_compound_hdr *hdr) { + struct nfsd4_session *session = cb->cb_clp->cl_cb_session; __be32 *p; - u32 op; - int32_t nfserr; - - READ_BUF(8); - READ32(op); - if (op != expected) { - dprintk("NFSD: decode_cb_op_hdr: Callback server returned " - " operation %d but we issued a request for %d\n", - op, expected); - return -EIO; - } - READ32(nfserr); - if (nfserr != NFS_OK) - return -nfs_cb_stat_to_errno(nfserr); - return 0; + + if (hdr->minorversion == 0) + return; + + encode_nfs_cb_opnum4(xdr, OP_CB_SEQUENCE); + encode_sessionid4(xdr, session); + + p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4 + 4); + *p++ = cpu_to_be32(session->se_cb_seq_nr); /* csa_sequenceid */ + *p++ = xdr_zero; /* csa_slotid */ + *p++ = xdr_zero; /* csa_highest_slotid */ + *p++ = xdr_zero; /* csa_cachethis */ + xdr_encode_empty_array(p); /* csa_referring_call_lists */ + + hdr->nops++; } /* + * CB_SEQUENCE4resok + * + * struct CB_SEQUENCE4resok { + * sessionid4 csr_sessionid; + * sequenceid4 csr_sequenceid; + * slotid4 csr_slotid; + * slotid4 csr_highest_slotid; + * slotid4 csr_target_highest_slotid; + * }; + * + * union CB_SEQUENCE4res switch (nfsstat4 csr_status) { + * case NFS4_OK: + * CB_SEQUENCE4resok csr_resok4; + * default: + * void; + * }; + * * Our current back channel implmentation supports a single backchannel * with a single slot. */ -static int -decode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb, - struct rpc_rqst *rqstp) +static int decode_cb_sequence4resok(struct xdr_stream *xdr, + struct nfsd4_callback *cb) { - struct nfsd4_session *ses = cb->cb_clp->cl_cb_session; + struct nfsd4_session *session = cb->cb_clp->cl_cb_session; struct nfs4_sessionid id; int status; - u32 dummy; __be32 *p; + u32 dummy; - if (cb->cb_minorversion == 0) - return 0; - - status = decode_cb_op_hdr(xdr, OP_CB_SEQUENCE); - if (status) - return status; + status = -ESERVERFAULT; /* * If the server returns different values for sessionID, slotID or * sequence number, the server is looney tunes. */ - status = -ESERVERFAULT; - - READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); + p = xdr_inline_decode(xdr, NFS4_MAX_SESSIONID_LEN + 4 + 4); + if (unlikely(p == NULL)) + goto out_overflow; memcpy(id.data, p, NFS4_MAX_SESSIONID_LEN); - p += XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN); - if (memcmp(id.data, ses->se_sessionid.data, NFS4_MAX_SESSIONID_LEN)) { - dprintk("%s Invalid session id\n", __func__); + if (memcmp(id.data, session->se_sessionid.data, + NFS4_MAX_SESSIONID_LEN) != 0) { + dprintk("NFS: %s Invalid session id\n", __func__); goto out; } - READ32(dummy); - if (dummy != ses->se_cb_seq_nr) { - dprintk("%s Invalid sequence number\n", __func__); + p += XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN); + + dummy = be32_to_cpup(p++); + if (dummy != session->se_cb_seq_nr) { + dprintk("NFS: %s Invalid sequence number\n", __func__); goto out; } - READ32(dummy); /* slotid must be 0 */ + + dummy = be32_to_cpup(p++); if (dummy != 0) { - dprintk("%s Invalid slotid\n", __func__); + dprintk("NFS: %s Invalid slotid\n", __func__); goto out; } - /* FIXME: process highest slotid and target highest slotid */ + + /* + * FIXME: process highest slotid and target highest slotid + */ status = 0; out: return status; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; } +static int decode_cb_sequence4res(struct xdr_stream *xdr, + struct nfsd4_callback *cb) +{ + enum nfsstat4 nfserr; + int status; + + if (cb->cb_minorversion == 0) + return 0; + + status = decode_cb_op_status(xdr, OP_CB_SEQUENCE, &nfserr); + if (unlikely(status)) + goto out; + if (unlikely(nfserr != NFS4_OK)) + goto out_default; + status = decode_cb_sequence4resok(xdr, cb); +out: + return status; +out_default: + return nfs_cb_stat_to_errno(status); +} -static int -nfs4_xdr_dec_cb_null(struct rpc_rqst *req, __be32 *p) +/* + * NFSv4.0 and NFSv4.1 XDR encode functions + * + * NFSv4.0 callback argument types are defined in section 15 of RFC + * 3530: "Network File System (NFS) version 4 Protocol" and section 20 + * of RFC 5661: "Network File System (NFS) Version 4 Minor Version 1 + * Protocol". + */ + +/* + * NB: Without this zero space reservation, callbacks over krb5p fail + */ +static void nfs4_xdr_enc_cb_null(struct rpc_rqst *req, struct xdr_stream *xdr, + void *__unused) +{ + xdr_reserve_space(xdr, 0); +} + +/* + * 20.2. Operation 4: CB_RECALL - Recall a Delegation + */ +static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr, + const struct nfsd4_callback *cb) +{ + const struct nfs4_delegation *args = cb->cb_op; + struct nfs4_cb_compound_hdr hdr = { + .ident = cb->cb_clp->cl_cb_ident, + .minorversion = cb->cb_minorversion, + }; + + encode_cb_compound4args(xdr, &hdr); + encode_cb_sequence4args(xdr, cb, &hdr); + encode_cb_recall4args(xdr, args, &hdr); + encode_cb_nops(&hdr); +} + + +/* + * NFSv4.0 and NFSv4.1 XDR decode functions + * + * NFSv4.0 callback result types are defined in section 15 of RFC + * 3530: "Network File System (NFS) version 4 Protocol" and section 20 + * of RFC 5661: "Network File System (NFS) Version 4 Minor Version 1 + * Protocol". + */ + +static int nfs4_xdr_dec_cb_null(struct rpc_rqst *req, struct xdr_stream *xdr, + void *__unused) { return 0; } -static int -nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp, __be32 *p, - struct nfsd4_callback *cb) +/* + * 20.2. Operation 4: CB_RECALL - Recall a Delegation + */ +static int nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp, + struct xdr_stream *xdr, + struct nfsd4_callback *cb) { - struct xdr_stream xdr; struct nfs4_cb_compound_hdr hdr; + enum nfsstat4 nfserr; int status; - xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); - status = decode_cb_compound_hdr(&xdr, &hdr); - if (status) + status = decode_cb_compound4res(xdr, &hdr); + if (unlikely(status)) goto out; - if (cb) { - status = decode_cb_sequence(&xdr, cb, rqstp); - if (status) + + if (cb != NULL) { + status = decode_cb_sequence4res(xdr, cb); + if (unlikely(status)) goto out; } - status = decode_cb_op_hdr(&xdr, OP_CB_RECALL); + + status = decode_cb_op_status(xdr, OP_CB_RECALL, &nfserr); + if (unlikely(status)) + goto out; + if (unlikely(nfserr != NFS4_OK)) + goto out_default; out: return status; +out_default: + return nfs_cb_stat_to_errno(status); } /* * RPC procedure tables */ -#define PROC(proc, call, argtype, restype) \ -[NFSPROC4_CLNT_##proc] = { \ - .p_proc = NFSPROC4_CB_##call, \ - .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \ - .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \ - .p_arglen = NFS4_##argtype##_sz, \ - .p_replen = NFS4_##restype##_sz, \ - .p_statidx = NFSPROC4_CB_##call, \ - .p_name = #proc, \ -} - -static struct rpc_procinfo nfs4_cb_procedures[] = { - PROC(CB_NULL, NULL, enc_cb_null, dec_cb_null), - PROC(CB_RECALL, COMPOUND, enc_cb_recall, dec_cb_recall), +#define PROC(proc, call, argtype, restype) \ +[NFSPROC4_CLNT_##proc] = { \ + .p_proc = NFSPROC4_CB_##call, \ + .p_encode = (kxdreproc_t)nfs4_xdr_enc_##argtype, \ + .p_decode = (kxdrdproc_t)nfs4_xdr_dec_##restype, \ + .p_arglen = NFS4_enc_##argtype##_sz, \ + .p_replen = NFS4_dec_##restype##_sz, \ + .p_statidx = NFSPROC4_CB_##call, \ + .p_name = #proc, \ +} + +static struct rpc_procinfo nfs4_cb_procedures[] = { + PROC(CB_NULL, NULL, cb_null, cb_null), + PROC(CB_RECALL, COMPOUND, cb_recall, cb_recall), }; -static struct rpc_version nfs_cb_version4 = { +static struct rpc_version nfs_cb_version4 = { /* * Note on the callback rpc program version number: despite language in rfc * 5661 section 18.36.3 requiring servers to use 4 in this field, the @@ -440,29 +598,29 @@ static struct rpc_version nfs_cb_version4 = { * in practice that appears to be what implementations use. The section * 18.36.3 language is expected to be fixed in an erratum. */ - .number = 1, - .nrprocs = ARRAY_SIZE(nfs4_cb_procedures), - .procs = nfs4_cb_procedures + .number = 1, + .nrprocs = ARRAY_SIZE(nfs4_cb_procedures), + .procs = nfs4_cb_procedures }; -static struct rpc_version * nfs_cb_version[] = { +static struct rpc_version *nfs_cb_version[] = { &nfs_cb_version4, }; static struct rpc_program cb_program; static struct rpc_stat cb_stats = { - .program = &cb_program + .program = &cb_program }; #define NFS4_CALLBACK 0x40000000 static struct rpc_program cb_program = { - .name = "nfs4_cb", - .number = NFS4_CALLBACK, - .nrvers = ARRAY_SIZE(nfs_cb_version), - .version = nfs_cb_version, - .stats = &cb_stats, - .pipe_dir_name = "/nfsd4_cb", + .name = "nfs4_cb", + .number = NFS4_CALLBACK, + .nrvers = ARRAY_SIZE(nfs_cb_version), + .version = nfs_cb_version, + .stats = &cb_stats, + .pipe_dir_name = "/nfsd4_cb", }; static int max_cb_time(void) |