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Diffstat (limited to 'fs/nfs/nfs4xdr.c')
-rw-r--r--fs/nfs/nfs4xdr.c131
1 files changed, 93 insertions, 38 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index fc89e5ed07ee..e9255cb453e6 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -52,6 +52,7 @@
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
+#include <linux/fs_struct.h>
#include "nfs4_fs.h"
#include "internal.h"
@@ -415,6 +416,8 @@ static int nfs4_stat_to_errno(int);
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
+#define encode_layoutreturn_maxsz 0
+#define decode_layoutreturn_maxsz 0
#endif /* CONFIG_NFS_V4_1 */
#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
@@ -499,22 +502,24 @@ static int nfs4_stat_to_errno(int);
(compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
- encode_open_downgrade_maxsz + \
- encode_getattr_maxsz)
+ encode_layoutreturn_maxsz + \
+ encode_open_downgrade_maxsz)
#define NFS4_dec_open_downgrade_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
- decode_open_downgrade_maxsz + \
- decode_getattr_maxsz)
+ decode_layoutreturn_maxsz + \
+ decode_open_downgrade_maxsz)
#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
+ encode_layoutreturn_maxsz + \
encode_close_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
+ decode_layoutreturn_maxsz + \
decode_close_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
@@ -708,10 +713,13 @@ static int nfs4_stat_to_errno(int);
#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
+ encode_layoutreturn_maxsz + \
encode_delegreturn_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
+ decode_putfh_maxsz + \
+ decode_layoutreturn_maxsz + \
decode_delegreturn_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
@@ -1003,7 +1011,7 @@ static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *ve
static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
const struct nfs4_label *label,
const struct nfs_server *server,
- bool excl_check)
+ bool excl_check, const umode_t *umask)
{
char owner_name[IDMAP_NAMESZ];
char owner_group[IDMAP_NAMESZ];
@@ -1017,18 +1025,21 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
/*
* We reserve enough space to write the entire attribute buffer at once.
- * In the worst-case, this would be
- * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
- * = 40 bytes, plus any contribution from variable-length fields
- * such as owner/group.
*/
if (iap->ia_valid & ATTR_SIZE) {
bmval[0] |= FATTR4_WORD0_SIZE;
len += 8;
}
+ if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
+ umask = NULL;
if (iap->ia_valid & ATTR_MODE) {
- bmval[1] |= FATTR4_WORD1_MODE;
- len += 4;
+ if (umask) {
+ bmval[2] |= FATTR4_WORD2_MODE_UMASK;
+ len += 8;
+ } else {
+ bmval[1] |= FATTR4_WORD1_MODE;
+ len += 4;
+ }
}
if (iap->ia_valid & ATTR_UID) {
owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
@@ -1129,6 +1140,10 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
*p++ = cpu_to_be32(label->len);
p = xdr_encode_opaque_fixed(p, label->label, label->len);
}
+ if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
+ *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
+ *p++ = cpu_to_be32(*umask);
+ }
/* out: */
}
@@ -1183,7 +1198,8 @@ static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *
}
encode_string(xdr, create->name->len, create->name->name);
- encode_attrs(xdr, create->attrs, create->label, create->server, false);
+ encode_attrs(xdr, create->attrs, create->label, create->server, false,
+ &create->umask);
}
static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
@@ -1403,11 +1419,13 @@ static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_op
switch(arg->createmode) {
case NFS4_CREATE_UNCHECKED:
*p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
- encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
+ encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false,
+ &arg->umask);
break;
case NFS4_CREATE_GUARDED:
*p = cpu_to_be32(NFS4_CREATE_GUARDED);
- encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
+ encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false,
+ &arg->umask);
break;
case NFS4_CREATE_EXCLUSIVE:
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
@@ -1416,7 +1434,8 @@ static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_op
case NFS4_CREATE_EXCLUSIVE4_1:
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
encode_nfs4_verifier(xdr, &arg->u.verifier);
- encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, true);
+ encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, true,
+ &arg->umask);
}
}
@@ -1672,7 +1691,7 @@ static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs
{
encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
encode_nfs4_stateid(xdr, &arg->stateid);
- encode_attrs(xdr, arg->iap, arg->label, server, false);
+ encode_attrs(xdr, arg->iap, arg->label, server, false, NULL);
}
static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
@@ -2015,6 +2034,7 @@ encode_layoutreturn(struct xdr_stream *xdr,
const struct nfs4_layoutreturn_args *args,
struct compound_hdr *hdr)
{
+ const struct pnfs_layoutdriver_type *lr_ops = NFS_SERVER(args->inode)->pnfs_curr_ld;
__be32 *p;
encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
@@ -2029,10 +2049,11 @@ encode_layoutreturn(struct xdr_stream *xdr,
spin_lock(&args->inode->i_lock);
encode_nfs4_stateid(xdr, &args->stateid);
spin_unlock(&args->inode->i_lock);
- if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
- NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
- NFS_I(args->inode)->layout, xdr, args);
- } else
+ if (args->ld_private->ops && args->ld_private->ops->encode)
+ args->ld_private->ops->encode(xdr, args, args->ld_private);
+ else if (lr_ops->encode_layoutreturn)
+ lr_ops->encode_layoutreturn(xdr, args);
+ else
encode_uint32(xdr, 0);
}
@@ -2062,6 +2083,13 @@ static void encode_free_stateid(struct xdr_stream *xdr,
encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
encode_nfs4_stateid(xdr, &args->stateid);
}
+#else
+static inline void
+encode_layoutreturn(struct xdr_stream *xdr,
+ const struct nfs4_layoutreturn_args *args,
+ struct compound_hdr *hdr)
+{
+}
#endif /* CONFIG_NFS_V4_1 */
/*
@@ -2249,8 +2277,11 @@ static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
+ if (args->lr_args)
+ encode_layoutreturn(xdr, args->lr_args, &hdr);
+ if (args->bitmask != NULL)
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_close(xdr, args, &hdr);
- encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
@@ -2327,8 +2358,9 @@ static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
+ if (args->lr_args)
+ encode_layoutreturn(xdr, args->lr_args, &hdr);
encode_open_downgrade(xdr, args, &hdr);
- encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
@@ -2671,7 +2703,10 @@ static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fhandle, &hdr);
- encode_getfattr(xdr, args->bitmask, &hdr);
+ if (args->lr_args)
+ encode_layoutreturn(xdr, args->lr_args, &hdr);
+ if (args->bitmask)
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_delegreturn(xdr, args->stateid, &hdr);
encode_nops(&hdr);
}
@@ -6089,6 +6124,13 @@ static int decode_free_stateid(struct xdr_stream *xdr,
res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
return res->status;
}
+#else
+static inline
+int decode_layoutreturn(struct xdr_stream *xdr,
+ struct nfs4_layoutreturn_res *res)
+{
+ return 0;
+}
#endif /* CONFIG_NFS_V4_1 */
/*
@@ -6114,10 +6156,13 @@ static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
status = decode_putfh(xdr);
if (status)
goto out;
+ if (res->lr_res) {
+ status = decode_layoutreturn(xdr, res->lr_res);
+ res->lr_ret = status;
+ if (status)
+ goto out;
+ }
status = decode_open_downgrade(xdr, res);
- if (status != 0)
- goto out;
- decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
@@ -6444,16 +6489,18 @@ static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
status = decode_putfh(xdr);
if (status)
goto out;
+ if (res->lr_res) {
+ status = decode_layoutreturn(xdr, res->lr_res);
+ res->lr_ret = status;
+ if (status)
+ goto out;
+ }
+ if (res->fattr != NULL) {
+ status = decode_getfattr(xdr, res->fattr, res->server);
+ if (status != 0)
+ goto out;
+ }
status = decode_close(xdr, res);
- if (status != 0)
- goto out;
- /*
- * Note: Server may do delete on close for this file
- * in which case the getattr call will fail with
- * an ESTALE error. Shouldn't be a problem,
- * though, since fattr->valid will remain unset.
- */
- decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
@@ -6920,9 +6967,17 @@ static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
status = decode_putfh(xdr);
if (status != 0)
goto out;
- status = decode_getfattr(xdr, res->fattr, res->server);
- if (status != 0)
- goto out;
+ if (res->lr_res) {
+ status = decode_layoutreturn(xdr, res->lr_res);
+ res->lr_ret = status;
+ if (status)
+ goto out;
+ }
+ if (res->fattr) {
+ status = decode_getfattr(xdr, res->fattr, res->server);
+ if (status != 0)
+ goto out;
+ }
status = decode_delegreturn(xdr);
out:
return status;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.