From 9f06c719f474be7003763284a990bed6377bb0d4 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 14:59:18 +0000 Subject: SUNRPC: New xdr_streams XDR encoder API Now that all client-side XDR encoder routines use xdr_streams, there should be no need to support the legacy calling sequence [rpc_rqst *, __be32 *, RPC arg *] anywhere. We can construct an xdr_stream in the generic RPC code, instead of in each encoder function. Also, all the client-side encoder functions return 0 now, making a return value superfluous. Take this opportunity to convert them to return void instead. This is a refactoring change. It should not cause different behavior. Signed-off-by: Chuck Lever Tested-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- fs/nfs/nfs3xdr.c | 241 +++++++++++++++++++++---------------------------------- 1 file changed, 93 insertions(+), 148 deletions(-) (limited to 'fs/nfs/nfs3xdr.c') diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 15c93ccd90c5..ae1b1a43f05e 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -835,14 +835,11 @@ static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, * nfs_fh3 object; * }; */ -static int nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, __be32 *p, - const struct nfs_fh *fh) +static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_fh *fh) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_nfs_fh3(&xdr, fh); - return 0; + encode_nfs_fh3(xdr, fh); } /* @@ -876,16 +873,13 @@ static void encode_sattrguard3(struct xdr_stream *xdr, } } -static int nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_sattrargs *args) +static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_sattrargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_nfs_fh3(&xdr, args->fh); - encode_sattr3(&xdr, args->sattr); - encode_sattrguard3(&xdr, args); - return 0; + encode_nfs_fh3(xdr, args->fh); + encode_sattr3(xdr, args->sattr); + encode_sattrguard3(xdr, args); } /* @@ -895,14 +889,11 @@ static int nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, __be32 *p, * diropargs3 what; * }; */ -static int nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_diropargs *args) +static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_diropargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_diropargs3(&xdr, args->fh, args->name, args->len); - return 0; + encode_diropargs3(xdr, args->fh, args->name, args->len); } /* @@ -920,14 +911,11 @@ static void encode_access3args(struct xdr_stream *xdr, encode_uint32(xdr, args->access); } -static int nfs3_xdr_enc_access3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_accessargs *args) +static void nfs3_xdr_enc_access3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_accessargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_access3args(&xdr, args); - return 0; + encode_access3args(xdr, args); } /* @@ -937,16 +925,13 @@ static int nfs3_xdr_enc_access3args(struct rpc_rqst *req, __be32 *p, * nfs_fh3 symlink; * }; */ -static int nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_readlinkargs *args) +static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_readlinkargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_nfs_fh3(&xdr, args->fh); + encode_nfs_fh3(xdr, args->fh); prepare_reply_buffer(req, args->pages, args->pgbase, args->pglen, NFS3_readlinkres_sz); - return 0; } /* @@ -970,17 +955,14 @@ static void encode_read3args(struct xdr_stream *xdr, *p = cpu_to_be32(args->count); } -static int nfs3_xdr_enc_read3args(struct rpc_rqst *req, __be32 *p, - const struct nfs_readargs *args) +static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_readargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_read3args(&xdr, 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; } /* @@ -1015,15 +997,12 @@ static void encode_write3args(struct xdr_stream *xdr, xdr_write_pages(xdr, args->pages, args->pgbase, args->count); } -static int nfs3_xdr_enc_write3args(struct rpc_rqst *req, __be32 *p, - const struct nfs_writeargs *args) +static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_writeargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_write3args(&xdr, args); - xdr.buf->flags |= XDRBUF_WRITE; - return 0; + encode_write3args(xdr, args); + xdr->buf->flags |= XDRBUF_WRITE; } /* @@ -1065,15 +1044,12 @@ static void encode_createhow3(struct xdr_stream *xdr, } } -static int nfs3_xdr_enc_create3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_createargs *args) +static void nfs3_xdr_enc_create3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_createargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_diropargs3(&xdr, args->fh, args->name, args->len); - encode_createhow3(&xdr, args); - return 0; + encode_diropargs3(xdr, args->fh, args->name, args->len); + encode_createhow3(xdr, args); } /* @@ -1084,15 +1060,12 @@ static int nfs3_xdr_enc_create3args(struct rpc_rqst *req, __be32 *p, * sattr3 attributes; * }; */ -static int nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_mkdirargs *args) +static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_mkdirargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_diropargs3(&xdr, args->fh, args->name, args->len); - encode_sattr3(&xdr, args->sattr); - return 0; + encode_diropargs3(xdr, args->fh, args->name, args->len); + encode_sattr3(xdr, args->sattr); } /* @@ -1115,15 +1088,12 @@ static void encode_symlinkdata3(struct xdr_stream *xdr, encode_nfspath3(xdr, args->pages, args->pathlen); } -static int nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_symlinkargs *args) +static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_symlinkargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_diropargs3(&xdr, args->fromfh, args->fromname, args->fromlen); - encode_symlinkdata3(&xdr, args); - return 0; + encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); + encode_symlinkdata3(xdr, args); } /* @@ -1178,15 +1148,12 @@ static void encode_mknoddata3(struct xdr_stream *xdr, } } -static int nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_mknodargs *args) +static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_mknodargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_diropargs3(&xdr, args->fh, args->name, args->len); - encode_mknoddata3(&xdr, args); - return 0; + encode_diropargs3(xdr, args->fh, args->name, args->len); + encode_mknoddata3(xdr, args); } /* @@ -1196,14 +1163,11 @@ static int nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, __be32 *p, * diropargs3 object; * }; */ -static int nfs3_xdr_enc_remove3args(struct rpc_rqst *req, __be32 *p, - const struct nfs_removeargs *args) +static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_removeargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_diropargs3(&xdr, args->fh, args->name.name, args->name.len); - return 0; + encode_diropargs3(xdr, args->fh, args->name.name, args->name.len); } /* @@ -1214,17 +1178,15 @@ static int nfs3_xdr_enc_remove3args(struct rpc_rqst *req, __be32 *p, * diropargs3 to; * }; */ -static int nfs3_xdr_enc_rename3args(struct rpc_rqst *req, __be32 *p, - const struct nfs_renameargs *args) +static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_renameargs *args) { const struct qstr *old = args->old_name; const struct qstr *new = args->new_name; - struct xdr_stream xdr; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_diropargs3(&xdr, args->old_dir, old->name, old->len); - encode_diropargs3(&xdr, args->new_dir, new->name, new->len); - return 0; + encode_diropargs3(xdr, args->old_dir, old->name, old->len); + encode_diropargs3(xdr, args->new_dir, new->name, new->len); } /* @@ -1235,15 +1197,12 @@ static int nfs3_xdr_enc_rename3args(struct rpc_rqst *req, __be32 *p, * diropargs3 link; * }; */ -static int nfs3_xdr_enc_link3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_linkargs *args) +static void nfs3_xdr_enc_link3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_linkargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_nfs_fh3(&xdr, args->fromfh); - encode_diropargs3(&xdr, args->tofh, args->toname, args->tolen); - return 0; + encode_nfs_fh3(xdr, args->fromfh); + encode_diropargs3(xdr, args->tofh, args->toname, args->tolen); } /* @@ -1269,16 +1228,13 @@ static void encode_readdir3args(struct xdr_stream *xdr, *p = cpu_to_be32(args->count); } -static int nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_readdirargs *args) +static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_readdirargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_readdir3args(&xdr, args); + encode_readdir3args(xdr, args); prepare_reply_buffer(req, args->pages, 0, args->count, NFS3_readdirres_sz); - return 0; } /* @@ -1312,16 +1268,13 @@ static void encode_readdirplus3args(struct xdr_stream *xdr, *p = cpu_to_be32(args->count); } -static int nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_readdirargs *args) +static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_readdirargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_readdirplus3args(&xdr, args); + encode_readdirplus3args(xdr, args); prepare_reply_buffer(req, args->pages, 0, args->count, NFS3_readdirres_sz); - return 0; } /* @@ -1345,57 +1298,49 @@ static void encode_commit3args(struct xdr_stream *xdr, *p = cpu_to_be32(args->count); } -static int nfs3_xdr_enc_commit3args(struct rpc_rqst *req, __be32 *p, - const struct nfs_writeargs *args) +static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs_writeargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_commit3args(&xdr, args); - return 0; + encode_commit3args(xdr, args); } #ifdef CONFIG_NFS_V3_ACL -static int nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, __be32 *p, - const struct nfs3_getaclargs *args) +static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, + struct xdr_stream *xdr, + const struct nfs3_getaclargs *args) { - struct xdr_stream xdr; - - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_nfs_fh3(&xdr, args->fh); - encode_uint32(&xdr, args->mask); + 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); - return 0; } -static int nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, __be32 *p, - const 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_stream xdr; unsigned int base; int error; - xdr_init_encode(&xdr, &req->rq_snd_buf, p); - encode_nfs_fh3(&xdr, NFS_FH(args->inode)); - encode_uint32(&xdr, args->mask); + encode_nfs_fh3(xdr, NFS_FH(args->inode)); + encode_uint32(xdr, args->mask); if (args->npages != 0) - xdr_write_pages(&xdr, args->pages, 0, args->len); + xdr_write_pages(xdr, args->pages, 0, args->len); base = req->rq_slen; - error = nfsacl_encode(xdr.buf, base, args->inode, + error = nfsacl_encode(xdr->buf, base, args->inode, (args->mask & NFS_ACL) ? args->acl_access : NULL, 1, 0); BUG_ON(error < 0); - error = nfsacl_encode(xdr.buf, base + error, args->inode, + 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); - return 0; } #endif /* CONFIG_NFS_V3_ACL */ @@ -2506,7 +2451,7 @@ out_default: #define PROC(proc, argtype, restype, timer) \ [NFS3PROC_##proc] = { \ .p_proc = NFS3PROC_##proc, \ - .p_encode = (kxdrproc_t)nfs3_xdr_enc_##argtype##3args, \ + .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \ .p_decode = (kxdrproc_t)nfs3_xdr_dec_##restype##3res, \ .p_arglen = NFS3_##argtype##args_sz, \ .p_replen = NFS3_##restype##res_sz, \ @@ -2549,7 +2494,7 @@ struct rpc_version nfs_version3 = { static struct rpc_procinfo nfs3_acl_procedures[] = { [ACLPROC3_GETACL] = { .p_proc = ACLPROC3_GETACL, - .p_encode = (kxdrproc_t)nfs3_xdr_enc_getacl3args, + .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args, .p_decode = (kxdrproc_t)nfs3_xdr_dec_getacl3res, .p_arglen = ACL3_getaclargs_sz, .p_replen = ACL3_getaclres_sz, @@ -2558,7 +2503,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = { }, [ACLPROC3_SETACL] = { .p_proc = ACLPROC3_SETACL, - .p_encode = (kxdrproc_t)nfs3_xdr_enc_setacl3args, + .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args, .p_decode = (kxdrproc_t)nfs3_xdr_dec_setacl3res, .p_arglen = ACL3_setaclargs_sz, .p_replen = ACL3_setaclres_sz, -- cgit v1.2.3