allow for zero size reads in asyncdns. These can happen after a signal

(This used to be commit 8bac91a6e7a3601b093cb64e9cb3bcc1663fb4d4)

diff --git a/source3/nmbd/asyncdns.c b/source3/nmbd/asyncdns.c
index c87e0907543bf50bc1ab4fd97d9379f34781df99..f15880080f5e5bec7f78b0828915f5e36e789499 100644 (file)
--- a/source3/nmbd/asyncdns.c
+++ b/source3/nmbd/asyncdns.c
@@ -162,13 +162,16 @@ void run_dns_queue(void)
 {
        struct query_record r;
        struct packet_struct *p, *p2;
+       int size;
 
        if (fd_in == -1)
                return;
 
-       if (read_data(fd_in, (char *)&r, sizeof(r)) != sizeof(r)) {
-               DEBUG(0,("Incomplete DNS answer from child!\n"));
-               fd_in = -1;
+       if ((size=read_data(fd_in, (char *)&r, sizeof(r))) != sizeof(r)) {
+               if (size) {
+                       DEBUG(0,("Incomplete DNS answer from child!\n"));
+                       fd_in = -1;
+               }
                return;
        }