From 3d497ab62c19ed66b3b69ba7b01d8f7d095c3f83 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 26 Oct 2006 01:32:49 +0000 Subject: [PATCH] reduce the possibility of race conditions when using the lock utility SVN-Revision: 5297 --- package/busybox/patches/340-lock_util.patch | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/package/busybox/patches/340-lock_util.patch b/package/busybox/patches/340-lock_util.patch index a86948d597d..acb4457f38d 100644 --- a/package/busybox/patches/340-lock_util.patch +++ b/package/busybox/patches/340-lock_util.patch @@ -33,7 +33,7 @@ diff -ruN busybox-1.2.0-old/miscutils/Config.in busybox-1.2.0-new/miscutils/Conf diff -ruN busybox-1.2.0-old/miscutils/lock.c busybox-1.2.0-new/miscutils/lock.c --- busybox-1.2.0-old/miscutils/lock.c 1970-01-01 01:00:00.000000000 +0100 +++ busybox-1.2.0-new/miscutils/lock.c 2006-08-01 10:21:15.000000000 +0200 -@@ -0,0 +1,133 @@ +@@ -0,0 +1,135 @@ +/* + * Copyright (C) 2006 Felix Fietkau + * @@ -93,9 +93,11 @@ diff -ruN busybox-1.2.0-old/miscutils/lock.c busybox-1.2.0-new/miscutils/lock.c + int pid; + char pidstr[8]; + -+ if ((fd = open(file, O_RDWR | O_CREAT, 0700)) < 0) { -+ fprintf(stderr, "Can't open %s\n", file); -+ return 1; ++ if ((fd = open(file, O_RDWR | O_CREAT | O_EXCL, 0700)) < 0) { ++ if ((fd = open(file, O_RDWR)) < 0) { ++ fprintf(stderr, "Can't open %s\n", file); ++ return 1; ++ } + } + + if (flock(fd, (shared ? LOCK_SH : LOCK_EX)) < 0) {