From: Max Reitz <mre...@redhat.com>
We kept old_stderr specifically so we could keep emitting error message
on stderr. However, qemu_daemon() closes stderr. Therefore, we need to
dup() stderr to old_stderr before invoking qemu_daemon().
Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Eric Blake <ebl...@redhat.com>
Message-Id: <20190508211820.17851-4-mre...@redhat.com>
Signed-off-by: Eric Blake <ebl...@redhat.com>
---
qemu-nbd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 99377a3f14e2..a8cb39e51043 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -1004,10 +1004,11 @@ int main(int argc, char **argv)
exit(EXIT_FAILURE);
} else if (pid == 0) {
close(stderr_fd[0]);
+
+ old_stderr = dup(STDERR_FILENO);
ret = qemu_daemon(1, 0);
/* Temporarily redirect stderr to the parent's pipe... */
- old_stderr = dup(STDERR_FILENO);
dup2(stderr_fd[1], STDERR_FILENO);
if (ret < 0) {
error_report("Failed to daemonize: %s", strerror(errno));
--
2.20.1
