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authorTrond Myklebust <Trond.Myklebust@netapp.com>2007-07-17 21:52:41 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-07-19 15:09:03 -0400
commit9936781d0147e13cbc6df02f5265e0b9999ce3cf (patch)
treea24b01b576cd04f5eb6b9f61da5cfed650d50603 /fs
parent56659e9926ef5996398924c799ecac39ca8b6223 (diff)
downloadlinux-linaro-9936781d0147e13cbc6df02f5265e0b9999ce3cf.tar.gz
NFSv4: Try to recover from getfh failures in nfs4_xdr_dec_open
Try harder to recover the open state if the server failed to return a filehandle. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/nfs4proc.c7
-rw-r--r--fs/nfs/nfs4xdr.c8
2 files changed, 10 insertions, 5 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 5f3689befc2..7ead63e065a 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -66,6 +66,8 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry
static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception);
static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp);
static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openflags);
+static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
+static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
/* Prevent leaks of NFSv4 errors into userland */
int nfs4_map_errors(int err)
@@ -930,6 +932,9 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
if (status != 0 || !data->rpc_done)
return status;
+ if (o_res->fh.size == 0)
+ _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr);
+
if (o_arg->open_flags & O_CREAT) {
update_changeattr(dir, &o_res->cinfo);
nfs_post_op_update_inode(dir, o_res->dir_attr);
@@ -941,7 +946,7 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
return status;
}
if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
- return server->nfs_client->rpc_ops->getattr(server, &o_res->fh, o_res->f_attr);
+ _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
return 0;
}
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 99a123db108..af959147077 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -3161,11 +3161,12 @@ static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
uint32_t len;
int status;
+ /* Zero handle first to allow comparisons */
+ memset(fh, 0, sizeof(*fh));
+
status = decode_op_hdr(xdr, OP_GETFH);
if (status)
return status;
- /* Zero handle first to allow comparisons */
- memset(fh, 0, sizeof(*fh));
READ_BUF(4);
READ32(len);
@@ -4030,8 +4031,7 @@ static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openr
status = decode_open(&xdr, res);
if (status)
goto out;
- status = decode_getfh(&xdr, &res->fh);
- if (status)
+ if (decode_getfh(&xdr, &res->fh) != 0)
goto out;
if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
goto out;