From: Karel Zak <kzak@redhat.com>
Date: Fri, 19 Nov 2010 12:15:19 +0000 (+0100)
Subject: libmount: fix mnt_optstr_remove_option_at()
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e548d51d552f2818064e218809a7ac00e89b6f39;p=util-linux

libmount: fix mnt_optstr_remove_option_at()

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/shlibs/mount/src/optstr.c b/shlibs/mount/src/optstr.c
index 5e544658..c5c7c221 100644
--- a/shlibs/mount/src/optstr.c
+++ b/shlibs/mount/src/optstr.c
@@ -297,7 +297,7 @@ int mnt_optstr_get_option(char *optstr, const char *name,
  */
 int mnt_optstr_remove_option_at(char **optstr, char *begin, char *end)
 {
-	size_t sz = strlen(end);
+	size_t sz;
 
 	if (!optstr || !begin || !end)
 		return -EINVAL;
@@ -305,6 +305,8 @@ int mnt_optstr_remove_option_at(char **optstr, char *begin, char *end)
 	if ((begin == *optstr || *(begin - 1) == ',') && *end == ',')
 		end++;
 
+	sz = strlen(end);
+
 	memmove(begin, end, sz + 1);
 	if (!*begin && *(begin - 1) == ',')
 		*(begin - 1) = '\0';