In v4.1 the client MUST/SHOULD use the EXCLUSIVE4_1 flag instead of
EXCLUSIVE4, and GUARDED when the server supports persistent sessions.
For now (and until we support suppattr_exclcreat), we don't send any
attributes with EXCLUSIVE4_1 relying in the subsequent SETATTR as in v4.0
Signed-off-by: Alexandros Batsakis <batsakis@xxxxxxxxxx>
---
fs/nfs/nfs4proc.c | 12 +++++++++---
fs/nfs/nfs4xdr.c | 23 ++++++++++++++++++++---
2 files changed, 29 insertions(+), 6 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index ef77d40..2de209c 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -720,9 +720,15 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->o_arg.bitmask = server->attr_bitmask;
p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
if (flags & O_EXCL) {
- u32 *s = (u32 *) p->o_arg.u.verifier.data;
- s[0] = jiffies;
- s[1] = current->pid;
+ if (nfs4_has_persistent_session(server->nfs_client)) {
+ /* GUARDED */
+ p->o_arg.u.attrs = &p->attrs;
+ memcpy(&p->attrs, attrs, sizeof(p->attrs));
+ } else { /* EXCLUSIVE4_1 */
+ u32 *s = (u32 *) p->o_arg.u.verifier.data;
+ s[0] = jiffies;
+ s[1] = current->pid;
+ }
} else if (flags & O_CREAT) {
p->o_arg.u.attrs = &p->attrs;
memcpy(&p->attrs, attrs, sizeof(p->attrs));
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index fc36af4..3875759 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -52,6 +52,7 @@
#include <linux/nfs_fs.h>
#include <linux/nfs_idmap.h>
#include "nfs4_fs.h"
+#include "internal.h"
#define NFSDBG_FACILITY NFSDBG_XDR
@@ -135,7 +136,7 @@ static int nfs4_stat_to_errno(int);
#define decode_lookup_maxsz (op_decode_hdr_maxsz)
#define encode_share_access_maxsz \
(2)
-#define encode_createmode_maxsz (1 + encode_attrs_maxsz)
+#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
#define encode_open_maxsz (op_encode_hdr_maxsz + \
@@ -1154,6 +1155,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena
static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
__be32 *p;
+ struct nfs_client *clp;
p = reserve_space(xdr, 4);
switch(arg->open_flags & O_EXCL) {
@@ -1162,8 +1164,23 @@ static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_op
encode_attrs(xdr, arg->u.attrs, arg->server);
break;
default:
- *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
- encode_nfs4_verifier(xdr, &arg->u.verifier);
+ clp = arg->server->nfs_client;
+ if (clp->cl_minorversion > 0) {
+ if (nfs4_has_persistent_session(clp)) {
+ *p = cpu_to_be32(NFS4_CREATE_GUARDED);
+ encode_attrs(xdr, arg->u.attrs, arg->server);
+ } else {
+ struct iattr dummy;
+
+ *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
+ encode_nfs4_verifier(xdr, &arg->u.verifier);
+ dummy.ia_valid = 0;
+ encode_attrs(xdr, &dummy, arg->server);
+ }
+ } else {
+ *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
+ encode_nfs4_verifier(xdr, &arg->u.verifier);
+ }
}
}
--
1.6.2.5
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
