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* sockets.c: Fix ioctl FIONREAD when some data remains from last recv.

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(patch #3574).
This commit is contained in:
jifl 2007-05-03 19:13:27 +00:00
parent eb28133b1f
commit e895aa71a4
2 changed files with 14 additions and 1 deletions
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4
CHANGELOG
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@ -117,6 +117,10 @@ HISTORY
++ Bug fixes:
2007-05-03 "maq"
* sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
(patch #3574).
2007-04-23 Simon Goldschmidt
* loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
in NULL reference for incoming TCP packets". Loopif has to be configured

11
src/api/sockets.c
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@ -1406,6 +1406,7 @@ int lwip_setsockopt (int s, int level, int optname, const void *optval, socklen_
int lwip_ioctl(int s, long cmd, void *argp)
{
struct lwip_socket *sock = get_socket(s);
u16_t buflen = 0;
if (!sock)
return -1;
@ -1419,7 +1420,15 @@ int lwip_ioctl(int s, long cmd, void *argp)
*((u16_t*)argp) = sock->conn->recv_avail;
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONREAD, %p) = %u\n", s, argp, *((u16_t*)argp)));
/* Check if there is data left from the last recv operation. /maq 041215 */
if (sock->lastdata) {
buflen = netbuf_len(sock->lastdata);
buflen -= sock->lastoffset;
*((u16_t*)argp) += buflen;
}
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONREAD, %p) = %u\n", s, argp, *((u16_t*)argp)));
sock_set_errno(sock, 0);
return 0;