diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-10-23 14:46:42 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-11-09 16:52:34 -0800 |
| commit | b5d2222fa553a000577326fd2ea65d401f4ac000 (patch) | |
| tree | 7a1931e45110ff9c1bbc77641e9716146c0dd74f /fs | |
| parent | 8107fe51452d9213d5442a368ce710681b0c88c9 (diff) | |
NFSv4: Fix a bug when the server returns NFS4ERR_RESOURCE
commit 52567b03ca38b6e556ced450d64dba8d66e23b0e upstream.
RFC 3530 states that when we recieve the error NFS4ERR_RESOURCE, we are not
supposed to bump the sequence number on OPEN, LOCK, LOCKU, CLOSE, etc
operations. The problem is that we map that error into EREMOTEIO in the XDR
layer, and so the NFSv4 middle-layer routines like seqid_mutating_err(),
and nfs_increment_seqid() don't recognise it.
The fix is to defer the mapping until after the middle layers have
processed the error.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 11 | ||||
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 1 |
2 files changed, 8 insertions, 4 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index c910413eaeca..948d33afbaa5 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -71,12 +71,17 @@ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, /* Prevent leaks of NFSv4 errors into userland */ int nfs4_map_errors(int err) { - if (err < -1000) { + if (err >= -1000) + return err; + switch (err) { + case -NFS4ERR_RESOURCE: + return -EREMOTEIO; + default: dprintk("%s could not handle NFSv4 error %d\n", __func__, -err); - return -EIO; + break; } - return err; + return -EIO; } /* diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index b916297d2334..5e26759f8148 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4671,7 +4671,6 @@ static struct { { NFS4ERR_SERVERFAULT, -ESERVERFAULT }, { NFS4ERR_BADTYPE, -EBADTYPE }, { NFS4ERR_LOCKED, -EAGAIN }, - { NFS4ERR_RESOURCE, -EREMOTEIO }, { NFS4ERR_SYMLINK, -ELOOP }, { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, { NFS4ERR_DEADLOCK, -EDEADLK }, |