From 2a2015495142ee0a35711b5dcf7b215c31489f27 Mon Sep 17 00:00:00 2001 From: Ding Xiang Date: Wed, 30 Aug 2023 18:11:48 +0800 Subject: selftests/landlock: Fix a resource leak MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The opened file should be closed before return, otherwise resource leak will occur. Signed-off-by: Ding Xiang Link: https://lore.kernel.org/r/20230830101148.3738-1-dingxiang@cmss.chinamobile.com Fixes: 3de64b656b3c ("selftests/landlock: Add supports_filesystem() helper") Signed-off-by: Mickaël Salaün --- tools/testing/selftests/landlock/fs_test.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'tools/testing/selftests/landlock') diff --git a/tools/testing/selftests/landlock/fs_test.c b/tools/testing/selftests/landlock/fs_test.c index 83d565569512..251594306d40 100644 --- a/tools/testing/selftests/landlock/fs_test.c +++ b/tools/testing/selftests/landlock/fs_test.c @@ -113,7 +113,7 @@ static bool supports_filesystem(const char *const filesystem) { char str[32]; int len; - bool res; + bool res = true; 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. */ if (!filesystem) - return true; + goto out; len = snprintf(str, sizeof(str), "nodev\t%s\n", filesystem); if (len >= sizeof(str)) /* Ignores too-long filesystem names. */ - return true; + goto out; res = fgrep(inf, str); + +out: fclose(inf); return res; } -- cgit v1.2.3