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hw/9pfs: Don't crash when we get a request with not supported 9p operation 

Return EOPNOTSUPP as error

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>
This commit is contained in:
Aneesh Kumar K.V 2011-06-01 12:35:14 +05:30 committed by Venkateswararao Jujjuri (JV)
parent faa44e3d3e
commit 5c3234c6c0
1 changed files with 11 additions and 6 deletions
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17
hw/9pfs/virtio-9p.c
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@ -3606,6 +3606,11 @@ static pdu_handler_t *pdu_handlers[] = {
[P9_TREMOVE] = v9fs_remove, [P9_TREMOVE] = v9fs_remove,
}; };
static void v9fs_op_not_supp(V9fsState *s, V9fsPDU *pdu)
{
complete_pdu(s, pdu, -EOPNOTSUPP);
}
static void submit_pdu(V9fsState *s, V9fsPDU *pdu) static void submit_pdu(V9fsState *s, V9fsPDU *pdu)
{ {
pdu_handler_t *handler; pdu_handler_t *handler;
@ -3613,12 +3618,12 @@ static void submit_pdu(V9fsState *s, V9fsPDU *pdu)
if (debug_9p_pdu) { if (debug_9p_pdu) {
pprint_pdu(pdu); pprint_pdu(pdu);
} }
if (pdu->id >= ARRAY_SIZE(pdu_handlers) ||
BUG_ON(pdu->id >= ARRAY_SIZE(pdu_handlers)); (pdu_handlers[pdu->id] == NULL)) {
handler = v9fs_op_not_supp;
handler = pdu_handlers[pdu->id]; } else {
BUG_ON(handler == NULL); handler = pdu_handlers[pdu->id];
}
handler(s, pdu); handler(s, pdu);
} }