From: Anicka Bernathova <anicka@anicka.net>
Date: Fri, 17 Jul 2009 10:22:44 +0000 (+0200)
Subject: cope with old locks
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=6207bdbcb81fbacb19da0d779fe664bad213a7d2;p=umpf.git

cope with old locks
---

diff --git a/lock.c b/lock.c
index 5aa6a7a..12f4083 100644
--- a/lock.c
+++ b/lock.c
@@ -8,6 +8,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <time.h>
 
 #include "umpf.h"
 
@@ -55,7 +56,6 @@ cat(char* l, char* r)
 	return res;	
 }
 
-/* FIXME: what about privileges? */
 static int
 dot_lock(char* path)
 {
@@ -66,6 +66,8 @@ dot_lock(char* path)
 
 	raise_gid();
 	for (i = 0; i < LOCK_MAX_TRIES; i++){
+		struct stat buf;
+
 		if ((fd = open(lockfile, O_WRONLY | O_EXCL | O_CREAT, 0)) 
 			>= 0) {
 			close(fd);
@@ -75,8 +77,10 @@ dot_lock(char* path)
 
 		if (errno != EEXIST)
 			break;
-
-		/* FIXME: deal with old locks */
+		/* deal with old locks */
+		stat(lockfile, &buf);
+		if ((time(NULL) - buf.st_mtime) > 3600)
+			unlink(lockfile);		
 		random_sleep(1, 1);
 	}
 	drop_gid();