slirp: Put forked exec into separate process group

Recent smb daemons tend to terminate themselves via a process group
SIGTERM. If the daemon is still in qemu's group by that time, qemu will
die as well. Avoid this by always pushing fork_exec processes into a
group of their own, not just (unused) type 2 execs.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

diff --git a/slirp/misc.c b/slirp/misc.c
index 08eba6adc0d8ae29e36d115ddb2568186445db8a..34179e26a84ca9a528cf94d074538542ab7230d0 100644 (file)
--- a/slirp/misc.c
+++ b/slirp/misc.c
@@ -153,11 +153,12 @@ fork_exec(struct socket *so, const char *ex, int do_pty)
                return 0;
 
         case 0:
+                setsid();
+
                /* Set the DISPLAY */
                if (do_pty == 2) {
                        (void) close(master);
 #ifdef TIOCSCTTY /* XXXXX */
-                       (void) setsid();
                        ioctl(s, TIOCSCTTY, (char *)NULL);
 #endif
                } else {