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net/socket: send: verify that sockfd is valid, fixes assert when using send on closed socket

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This commit is contained in:
Jussi Kivilinna
2017-09-12 07:40:13 -06:00
committed by Gregory Nutt
parent 1fa854285d
commit 7846381e09
1 changed files with 15 additions and 2 deletions
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net/socket/send.c
+15 -2
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@@ -121,9 +121,18 @@ ssize_t psock_send(FAR struct socket *psock, FAR const void *buf, size_t len,
int flags) int flags)
{ {
ssize_t ret; ssize_t ret;
int errcode;
DEBUGASSERT(psock != NULL && buf != NULL); DEBUGASSERT(psock != NULL && buf != NULL);
/* Verify that the sockfd corresponds to valid, allocated socket */
if (psock == NULL || psock->s_crefs <= 0)
{
errcode = EBADF;
goto errout;
}
/* Let the address family's send() method handle the operation */ /* Let the address family's send() method handle the operation */
DEBUGASSERT(psock->s_sockif != NULL && psock->s_sockif->si_send != NULL); DEBUGASSERT(psock->s_sockif != NULL && psock->s_sockif->si_send != NULL);
@@ -132,11 +141,15 @@ ssize_t psock_send(FAR struct socket *psock, FAR const void *buf, size_t len,
if (ret < 0) if (ret < 0)
{ {
nerr("ERROR: socket si_send() (or usrsock_sendto()) failed: %d\n", ret); nerr("ERROR: socket si_send() (or usrsock_sendto()) failed: %d\n", ret);
set_errno(-ret); errcode = -ret;
ret = ERROR; goto errout;
} }
return ret; return ret;
errout:
set_errno(errcode);
return ERROR;
} }
/**************************************************************************** /****************************************************************************