[PATCH] nfs-blkmapd: Fix the error status when nfs-blkmapd stops

[zhanchengbin <zhanchengbin1@huawei.com>]

The systemctl stop nfs-blkmap.service will sends the SIGTERM signal
to the nfs-blkmap.service first.If the process fails to be stopped,
it sends the SIGKILL signal again to kill the process.
However, exit(1) is executed in the SIGTERM processing function of
nfs-blkmap.service. As a result, systemd receives an error message
indicating that nfs-blkmap.service failed.
"Active: failed" is displayed when the systemctl status
nfs-blkmap.service command is executed.

Signed-off-by: zhanchengbin <zhanchengbin1@huawei.com>
---
  utils/blkmapd/device-discovery.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/blkmapd/device-discovery.c 
b/utils/blkmapd/device-discovery.c
index 2736ac89..49935c2e 100644
--- a/utils/blkmapd/device-discovery.c
+++ b/utils/blkmapd/device-discovery.c
@@ -462,7 +462,7 @@ static void sig_die(int signal)
  		unlink(PID_FILE);
  	}
  	BL_LOG_ERR("exit on signal(%d)\n", signal);
-	exit(1);
+	exit(0);
  }
  static void usage(void)
  {
-- 
2.33.0