From 882677f72fd4541a9e1aa4b8c40d8095f1be3536 Mon Sep 17 00:00:00 2001
From: rpm-build <rpm-build>
Date: Mon, 14 Dec 2020 20:52:47 +0800
Subject: [PATCH] remove-rename_device_lock-when-process-does-not-exist.patch

---
 src/rename_device.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/rename_device.c b/src/rename_device.c
index c39f447..5e49bbd 100644
--- a/src/rename_device.c
+++ b/src/rename_device.c
@@ -278,6 +278,13 @@ char *get_config_by_hwaddr(char *hwaddr, char *current) {
 	return first;
 }
 
+int pid_exist(int pid)
+{
+    char proc_dir[32];
+    sprintf(proc_dir, "/proc/%d/", pid);
+    return !access(proc_dir, F_OK);
+}
+
 void take_lock() {
 	int count = 0;
 	int lockfd;
@@ -309,8 +316,12 @@ void take_lock() {
 			close(fd);
 			pid = atoi(buf);
 			if (pid && pid != 1) {
-				kill(pid,SIGKILL);
-			}
+			    if (pid_exist(pid))
+                                kill(pid,SIGKILL);
+                            else
+                                if (unlink(LOCKFILE) != 0)
+                                    break;
+                        }
 		}
 		usleep(100000);
 		continue;
-- 
2.23.0