From: John Crispin <blogic@openwrt.org>
Date: Mon, 23 Nov 2015 09:31:23 +0000 (+0100)
Subject: fix a potential off-by-on eerror inside udevtrigegr
X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fprocd.git;a=commitdiff_plain;h=3de9e0accfb691599c938eb1a040476c77fc423e

fix a potential off-by-on eerror inside udevtrigegr

coverity found this: 1330086

Signed-off-by: John Crispin <blogic@openwrt.org>
---

diff --git a/plug/udevtrigger.c b/plug/udevtrigger.c
index 5013189..3eba19a 100644
--- a/plug/udevtrigger.c
+++ b/plug/udevtrigger.c
@@ -114,7 +114,7 @@ static int sysfs_resolve_link(char *devpath, size_t size)
 
 	strlcpy(link_path, "/sys", sizeof(link_path));
 	strlcat(link_path, devpath, sizeof(link_path));
-	len = readlink(link_path, link_target, sizeof(link_target));
+	len = readlink(link_path, link_target, sizeof(link_target) - 1);
 	if (len <= 0)
 		return -1;
 	link_target[len] = '\0';