dccp_recv.c: Fix a fd leak.

If shutdown(fd, SHUT_WR) fails, we miss to close the
open fd returned by makesock().

diff --git a/dccp_recv.c b/dccp_recv.c
index a16acc8ab2c6018ea4eb71bcaf67ca20f132e061..64506737195de991134df0e692e897375c832e85 100644 (file)
--- a/dccp_recv.c
+++ b/dccp_recv.c
@@ -57,18 +57,22 @@ static int dccp_recv_open(struct receiver_node *rn)
 {
        struct private_dccp_recv_data *pdd;
        struct dccp_recv_args_info *conf = rn->conf;
-       int ret = makesock(AF_UNSPEC, IPPROTO_DCCP, 0, conf->host_arg, conf->port_arg);
+       int fd, ret = makesock(AF_UNSPEC, IPPROTO_DCCP, 0, conf->host_arg,
+               conf->port_arg);
 
        if (ret < 0)
                return ret;
+       fd = ret;
        /*
         * Disable unused CCIDs: the receiver does not send any application
         * data to the server. By shutting down this unused path we reduce
         * internal processing costs, as the unused CCIDs (in the kernel) are
         * then bypassed.
         */
-       if (shutdown(ret, SHUT_WR) < 0)
-               return -ERRNO_TO_PARA_ERROR(errno);
+       if (shutdown(fd, SHUT_WR) < 0) {
+               ret = -ERRNO_TO_PARA_ERROR(errno);
+               goto err;
+       }
 
        rn->buf = para_calloc(DCCP_BUFSIZE);
        rn->private_data = pdd = para_calloc(sizeof(struct private_dccp_recv_data));
@@ -76,6 +80,9 @@ static int dccp_recv_open(struct receiver_node *rn)
        pdd->fd = ret;
        mark_fd_nonblocking(pdd->fd);
        return 1;
+err:
+       close(fd);
+       return ret;
 }
 
 static void dccp_shutdown(void)