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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2010-10-19 09:17:02 +0530 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@gmail.com> | 2010-10-28 09:08:49 -0500 |
| commit | 7b3bb3fe166702b504f1068359c9550d3b277eaf (patch) | |
| tree | 8a3c8039f55126dbafb23a06d7b03a1e5abf3d24 /net/9p | |
| parent | 877cb3d4dd73838adcc6b79f2a3d29b155e7ebbe (diff) | |
| download | lwn-7b3bb3fe166702b504f1068359c9550d3b277eaf.tar.gz lwn-7b3bb3fe166702b504f1068359c9550d3b277eaf.zip | |
net/9p: Return error if we fail to encode protocol data
We need to return error in case we fail to encode data in protocol buffer.
This patch also return error in case of a failed copy_from_user.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'net/9p')
| -rw-r--r-- | net/9p/client.c | 2 | ||||
| -rw-r--r-- | net/9p/protocol.c | 5 |
2 files changed, 4 insertions, 3 deletions
diff --git a/net/9p/client.c b/net/9p/client.c index bc7b03537699..e3cfdff37327 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -579,6 +579,8 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...) va_start(ap, fmt); err = p9pdu_vwritef(req->tc, c->proto_version, fmt, ap); va_end(ap); + if (err) + goto reterr; p9pdu_finalize(req->tc); err = c->trans_mod->request(c, req); diff --git a/net/9p/protocol.c b/net/9p/protocol.c index 3acd3afb20c8..45c15f491401 100644 --- a/net/9p/protocol.c +++ b/net/9p/protocol.c @@ -122,9 +122,8 @@ static size_t pdu_write_u(struct p9_fcall *pdu, const char __user *udata, size_t size) { size_t len = MIN(pdu->capacity - pdu->size, size); - int err = copy_from_user(&pdu->sdata[pdu->size], udata, len); - if (err) - printk(KERN_WARNING "pdu_write_u returning: %d\n", err); + if (copy_from_user(&pdu->sdata[pdu->size], udata, len)) + len = 0; pdu->size += len; return size - len; |