[FFmpeg-cvslog] tcp: Check the return value from getsockopt

[Martin Storsjö]

ffmpeg | branch: master | Martin Storsjö <martin at martin.st> | Tue Jun 19 17:50:38 2012 +0300| [bb6c1abb0e022e1edaa5b3d8bb5abdff4f0c0ff2] | committer: Martin Storsjö

tcp: Check the return value from getsockopt

Make sure we actually have an error code in ret, in case
getsockopt failed.

Signed-off-by: Martin Storsjö <martin at martin.st>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=bb6c1abb0e022e1edaa5b3d8bb5abdff4f0c0ff2
---

 libavformat/tcp.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/tcp.c b/libavformat/tcp.c
index e7c6210..f1bad84 100644
--- a/libavformat/tcp.c
+++ b/libavformat/tcp.c
@@ -139,7 +139,8 @@ static int tcp_open(URLContext *h, const char *uri, int flags)
         }
         /* test error */
         optlen = sizeof(ret);
-        getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
+        if (getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen))
+            ret = AVUNERROR(ff_neterrno());
         if (ret != 0) {
             char errbuf[100];
             ret = AVERROR(ret);