1 files changed, 90 insertions, 46 deletions

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index abb09b580389..d86031b6ad79 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -95,34 +95,20 @@ check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		   u32 *bmval, u32 *writable)
 {
 	struct dentry *dentry = cstate->current_fh.fh_dentry;
+	struct svc_export *exp = cstate->current_fh.fh_export;
 
-	/*
-	 * Check about attributes are supported by the NFSv4 server or not.
-	 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
-	 */
-	if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
-	    (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
-	    (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
+	if (!nfsd_attrs_supported(cstate->minorversion, bmval))
 		return nfserr_attrnotsupp;
-
-	/*
-	 * Check FATTR4_WORD0_ACL can be supported
-	 * in current environment or not.
-	 */
-	if (bmval[0] & FATTR4_WORD0_ACL) {
-		if (!IS_POSIXACL(d_inode(dentry)))
-			return nfserr_attrnotsupp;
-	}
-
-	/*
-	 * According to spec, read-only attributes return ERR_INVAL.
-	 */
-	if (writable) {
-		if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
-		    (bmval[2] & ~writable[2]))
-			return nfserr_inval;
-	}
-
+	if ((bmval[0] & FATTR4_WORD0_ACL) && !IS_POSIXACL(d_inode(dentry)))
+		return nfserr_attrnotsupp;
+	if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) &&
+			!(exp->ex_flags & NFSEXP_SECURITY_LABEL))
+		return nfserr_attrnotsupp;
+	if (writable && !bmval_is_subset(bmval, writable))
+		return nfserr_inval;
+	if (writable && (bmval[2] & FATTR4_WORD2_MODE_UMASK) &&
+			(bmval[1] & FATTR4_WORD1_MODE))
+		return nfserr_inval;
 	return nfs_ok;
 }
 
@@ -695,9 +681,9 @@ nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
 		return nfserr_inval;
 
-	getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
-	getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
-	getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
+	getattr->ga_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0];
+	getattr->ga_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1];
+	getattr->ga_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2];
 
 	getattr->ga_fhp = &cstate->current_fh;
 	return nfs_ok;
@@ -799,9 +785,9 @@ nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
 		return nfserr_inval;
 
-	readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
-	readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
-	readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
+	readdir->rd_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0];
+	readdir->rd_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1];
+	readdir->rd_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2];
 
 	if ((cookie == 1) || (cookie == 2) ||
 	    (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
@@ -1001,7 +987,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	status = nfsd_vfs_write(rqstp, &cstate->current_fh, filp,
 				write->wr_offset, rqstp->rq_vec, nvecs, &cnt,
-				&write->wr_how_written);
+				write->wr_how_written);
 	fput(filp);
 
 	write->wr_bytes_written = cnt;
@@ -1856,6 +1842,12 @@ static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd
 	return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
 }
 
+static inline u32 nfsd4_access_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	/* ac_supported, ac_resp_access */
+	return (op_encode_hdr_size + 2)* sizeof(__be32);
+}
+
 static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
 {
 	return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
@@ -1910,6 +1902,11 @@ static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp,
 	return ret;
 }
 
+static inline u32 nfsd4_getfh_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + 1) * sizeof(__be32) + NFS4_FHSIZE;
+}
+
 static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
 {
 	return (op_encode_hdr_size + op_encode_change_info_maxsz)
@@ -1951,6 +1948,11 @@ static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *o
 		XDR_QUADLEN(rlen)) * sizeof(__be32);
 }
 
+static inline u32 nfsd4_readlink_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + 1) * sizeof(__be32) + PAGE_SIZE;
+}
+
 static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
 {
 	return (op_encode_hdr_size + op_encode_change_info_maxsz)
@@ -1970,11 +1972,23 @@ static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp,
 		+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
 }
 
+static inline u32 nfsd4_test_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + 1 + op->u.test_stateid.ts_num_ids)
+		* sizeof(__be32);
+}
+
 static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
 {
 	return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
 }
 
+static inline u32 nfsd4_secinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + RPC_AUTH_MAXFLAVOR *
+		(4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32);
+}
+
 static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
 {
 	return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
@@ -2029,6 +2043,19 @@ static inline u32 nfsd4_copy_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
 }
 
 #ifdef CONFIG_NFSD_PNFS
+static inline u32 nfsd4_getdeviceinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	u32 maxcount = 0, rlen = 0;
+
+	maxcount = svc_max_payload(rqstp);
+	rlen = min(op->u.getdeviceinfo.gd_maxcount, maxcount);
+
+	return (op_encode_hdr_size +
+		1 /* gd_layout_type*/ +
+		XDR_QUADLEN(rlen) +
+		2 /* gd_notify_types */) * sizeof(__be32);
+}
+
 /*
  * At this stage we don't really know what layout driver will handle the request,
  * so we need to define an arbitrary upper bound here.
@@ -2058,10 +2085,17 @@ static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_
 }
 #endif /* CONFIG_NFSD_PNFS */
 
+
+static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+	return (op_encode_hdr_size + 3) * sizeof(__be32);
+}
+
 static struct nfsd4_operation nfsd4_ops[] = {
 	[OP_ACCESS] = {
 		.op_func = (nfsd4op_func)nfsd4_access,
 		.op_name = "OP_ACCESS",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_access_rsize,
 	},
 	[OP_CLOSE] = {
 		.op_func = (nfsd4op_func)nfsd4_close,
@@ -2099,6 +2133,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	[OP_GETFH] = {
 		.op_func = (nfsd4op_func)nfsd4_getfh,
 		.op_name = "OP_GETFH",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_getfh_rsize,
 	},
 	[OP_LINK] = {
 		.op_func = (nfsd4op_func)nfsd4_link,
@@ -2117,6 +2152,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	[OP_LOCKT] = {
 		.op_func = (nfsd4op_func)nfsd4_lockt,
 		.op_name = "OP_LOCKT",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
 	},
 	[OP_LOCKU] = {
 		.op_func = (nfsd4op_func)nfsd4_locku,
@@ -2129,15 +2165,18 @@ static struct nfsd4_operation nfsd4_ops[] = {
 		.op_func = (nfsd4op_func)nfsd4_lookup,
 		.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
 		.op_name = "OP_LOOKUP",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_LOOKUPP] = {
 		.op_func = (nfsd4op_func)nfsd4_lookupp,
 		.op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
 		.op_name = "OP_LOOKUPP",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_NVERIFY] = {
 		.op_func = (nfsd4op_func)nfsd4_nverify,
 		.op_name = "OP_NVERIFY",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_OPEN] = {
 		.op_func = (nfsd4op_func)nfsd4_open,
@@ -2195,6 +2234,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	[OP_READLINK] = {
 		.op_func = (nfsd4op_func)nfsd4_readlink,
 		.op_name = "OP_READLINK",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_readlink_rsize,
 	},
 	[OP_REMOVE] = {
 		.op_func = (nfsd4op_func)nfsd4_remove,
@@ -2233,6 +2273,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 		.op_func = (nfsd4op_func)nfsd4_secinfo,
 		.op_flags = OP_HANDLES_WRONGSEC,
 		.op_name = "OP_SECINFO",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_secinfo_rsize,
 	},
 	[OP_SETATTR] = {
 		.op_func = (nfsd4op_func)nfsd4_setattr,
@@ -2258,6 +2299,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	[OP_VERIFY] = {
 		.op_func = (nfsd4op_func)nfsd4_verify,
 		.op_name = "OP_VERIFY",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
 	},
 	[OP_WRITE] = {
 		.op_func = (nfsd4op_func)nfsd4_write,
@@ -2332,11 +2374,13 @@ static struct nfsd4_operation nfsd4_ops[] = {
 		.op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
 		.op_flags = OP_HANDLES_WRONGSEC,
 		.op_name = "OP_SECINFO_NO_NAME",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_secinfo_rsize,
 	},
 	[OP_TEST_STATEID] = {
 		.op_func = (nfsd4op_func)nfsd4_test_stateid,
 		.op_flags = ALLOWED_WITHOUT_FH,
 		.op_name = "OP_TEST_STATEID",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_test_stateid_rsize,
 	},
 	[OP_FREE_STATEID] = {
 		.op_func = (nfsd4op_func)nfsd4_free_stateid,
@@ -2350,6 +2394,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 		.op_func = (nfsd4op_func)nfsd4_getdeviceinfo,
 		.op_flags = ALLOWED_WITHOUT_FH,
 		.op_name = "OP_GETDEVICEINFO",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_getdeviceinfo_rsize,
 	},
 	[OP_LAYOUTGET] = {
 		.op_func = (nfsd4op_func)nfsd4_layoutget,
@@ -2399,6 +2444,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
 	[OP_SEEK] = {
 		.op_func = (nfsd4op_func)nfsd4_seek,
 		.op_name = "OP_SEEK",
+		.op_rsize_bop = (nfsd4op_rsize)nfsd4_seek_rsize,
 	},
 };
 
@@ -2443,14 +2489,11 @@ bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
 
 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
 {
-	struct nfsd4_operation *opdesc;
-	nfsd4op_rsize estimator;
-
-	if (op->opnum == OP_ILLEGAL)
+	if (op->opnum == OP_ILLEGAL || op->status == nfserr_notsupp)
 		return op_encode_hdr_size * sizeof(__be32);
-	opdesc = OPDESC(op);
-	estimator = opdesc->op_rsize_bop;
-	return estimator ? estimator(rqstp, op) : PAGE_SIZE;
+
+	BUG_ON(OPDESC(op)->op_rsize_bop == NULL);
+	return OPDESC(op)->op_rsize_bop(rqstp, op);
 }
 
 void warn_on_nonidempotent_op(struct nfsd4_op *op)
@@ -2494,12 +2537,13 @@ static struct svc_procedure		nfsd_procedures4[2] = {
 };
 
 struct svc_version	nfsd_version4 = {
-		.vs_vers	= 4,
-		.vs_nproc	= 2,
-		.vs_proc	= nfsd_procedures4,
-		.vs_dispatch	= nfsd_dispatch,
-		.vs_xdrsize	= NFS4_SVC_XDRSIZE,
-		.vs_rpcb_optnl	= 1,
+	.vs_vers		= 4,
+	.vs_nproc		= 2,
+	.vs_proc		= nfsd_procedures4,
+	.vs_dispatch		= nfsd_dispatch,
+	.vs_xdrsize		= NFS4_SVC_XDRSIZE,
+	.vs_rpcb_optnl		= true,
+	.vs_need_cong_ctrl	= true,
 };
 
 /*