migration: respect exit status with exec:

This patch makes sure that if the exec: process exits with a non-zero return
status, we treat the migration as failed.

This fixes https://bugs.launchpad.net/qemu/+bug/391879

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/savevm.c b/savevm.c
index dc20390b8f..af92ba2982 100644
--- a/savevm.c
+++ b/savevm.c
@@ -235,9 +235,10 @@ static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
 static int stdio_pclose(void *opaque)
 {
     QEMUFileStdio *s = opaque;
-    pclose(s->stdio_file);
+    int ret;
+    ret = pclose(s->stdio_file);
     qemu_free(s);
-    return 0;
+    return ret;
 }
 
 static int stdio_fclose(void *opaque)