diff options
| author | David Woodhouse <David.Woodhouse@intel.com> | 2012-11-21 10:38:13 +0000 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-11-21 10:38:13 +0000 |
| commit | 851462444d421c223965b12b836bef63da61b57f (patch) | |
| tree | 495baa14e638817941496c36e1443aed7dae0ea0 /net/9p/client.c | |
| parent | 5a6ea4af0907f995dc06df21a9c9ef764c7cd3bc (diff) | |
| parent | 6924d99fcdf1a688538a3cdebd1f135c22eec191 (diff) | |
Merge branch 'for-3.7' of git://git.infradead.org/users/dedekind/l2-mtd
Conflicts:
drivers/mtd/nand/nand_base.c
Diffstat (limited to 'net/9p/client.c')
| -rw-r--r-- | net/9p/client.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/net/9p/client.c b/net/9p/client.c index 8260f132b32..34d41767093 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -76,6 +76,20 @@ inline int p9_is_proto_dotu(struct p9_client *clnt) } EXPORT_SYMBOL(p9_is_proto_dotu); +/* + * Some error codes are taken directly from the server replies, + * make sure they are valid. + */ +static int safe_errno(int err) +{ + if ((err > 0) || (err < -MAX_ERRNO)) { + p9_debug(P9_DEBUG_ERROR, "Invalid error code %d\n", err); + return -EPROTO; + } + return err; +} + + /* Interpret mount option for protocol version */ static int get_protocol_version(char *s) { @@ -782,7 +796,7 @@ again: return req; reterr: p9_free_req(c, req); - return ERR_PTR(err); + return ERR_PTR(safe_errno(err)); } /** @@ -865,7 +879,7 @@ static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type, return req; reterr: p9_free_req(c, req); - return ERR_PTR(err); + return ERR_PTR(safe_errno(err)); } static struct p9_fid *p9_fid_create(struct p9_client *clnt) |