mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-30 14:19:16 +00:00
selftests/landlock: Fix a resource leak
The opened file should be closed before return, otherwise resource leak
will occur.
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20230830101148.3738-1-dingxiang@cmss.chinamobile.com
Fixes: 3de64b656b
("selftests/landlock: Add supports_filesystem() helper")
Signed-off-by: Mickaël Salaün <mic@digikod.net>
This commit is contained in:
parent
246c713a36
commit
2a20154951
1 changed files with 5 additions and 3 deletions
|
@ -113,7 +113,7 @@ static bool supports_filesystem(const char *const filesystem)
|
||||||
{
|
{
|
||||||
char str[32];
|
char str[32];
|
||||||
int len;
|
int len;
|
||||||
bool res;
|
bool res = true;
|
||||||
FILE *const inf = fopen("/proc/filesystems", "r");
|
FILE *const inf = fopen("/proc/filesystems", "r");
|
||||||
|
|
||||||
/*
|
/*
|
||||||
|
@ -125,14 +125,16 @@ static bool supports_filesystem(const char *const filesystem)
|
||||||
|
|
||||||
/* filesystem can be null for bind mounts. */
|
/* filesystem can be null for bind mounts. */
|
||||||
if (!filesystem)
|
if (!filesystem)
|
||||||
return true;
|
goto out;
|
||||||
|
|
||||||
len = snprintf(str, sizeof(str), "nodev\t%s\n", filesystem);
|
len = snprintf(str, sizeof(str), "nodev\t%s\n", filesystem);
|
||||||
if (len >= sizeof(str))
|
if (len >= sizeof(str))
|
||||||
/* Ignores too-long filesystem names. */
|
/* Ignores too-long filesystem names. */
|
||||||
return true;
|
goto out;
|
||||||
|
|
||||||
res = fgrep(inf, str);
|
res = fgrep(inf, str);
|
||||||
|
|
||||||
|
out:
|
||||||
fclose(inf);
|
fclose(inf);
|
||||||
return res;
|
return res;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue