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| author | Bryan Schumaker <bjschuma@netapp.com> | 2011-04-18 16:52:25 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-04-18 17:06:00 -0400 |
| commit | fb8a5ba8114491467c4067ec0330e1c3dcc81d10 (patch) | |
| tree | 32372368a12658c367daab20202266b4fd27dd8d /fs/nfs/nfs4proc.c | |
| parent | 468f86134ee515234afe5c5b3f39f266c50e61a5 (diff) | |
| download | linux-3.10-fb8a5ba8114491467c4067ec0330e1c3dcc81d10.tar.gz linux-3.10-fb8a5ba8114491467c4067ec0330e1c3dcc81d10.tar.bz2 linux-3.10-fb8a5ba8114491467c4067ec0330e1c3dcc81d10.zip | |
NFSv4: Handle NFS4ERR_WRONGSEC outside of nfs4_handle_exception()
I only want to try other secflavors during an initial mount if
NFS4ERR_WRONGSEC is returned. nfs4_handle_exception() could
potentially map other errors to EPERM, so we should handle this
error specially for correctness.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4proc.c')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e7e2077eebd..628e35f7530 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2186,9 +2186,14 @@ static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs4_exception exception = { }; int err; do { - err = nfs4_handle_exception(server, - _nfs4_lookup_root(server, fhandle, info), - &exception); + err = _nfs4_lookup_root(server, fhandle, info); + switch (err) { + case 0: + case -NFS4ERR_WRONGSEC: + break; + default: + err = nfs4_handle_exception(server, err, &exception); + } } while (exception.retry); return err; } @@ -2221,10 +2226,19 @@ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, for (i = 0; i < len; i++) { status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); - if (status == -EPERM || status == -EACCES) + if (status == -NFS4ERR_WRONGSEC || status == -EACCES) continue; break; } + /* + * -EACCESS could mean that the user doesn't have correct permissions + * to access the mount. It could also mean that we tried to mount + * with a gss auth flavor, but rpc.gssd isn't running. Either way, + * existing mount programs don't handle -EACCES very well so it should + * be mapped to -EPERM instead. + */ + if (status == -EACCES) + status = -EPERM; return status; } @@ -2235,7 +2249,11 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *info) { int status = nfs4_lookup_root(server, fhandle, info); - if ((status == -EPERM) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) + if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) + /* + * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM + * by nfs4_map_errors() as this function exits. + */ status = nfs4_find_root_sec(server, fhandle, info); if (status == 0) status = nfs4_server_capabilities(server, fhandle); |