Fix
mount-notify_test.c: In function ‘fanotify_rmdir’:
mount-notify_test.c:467:17: warning:
ignoring return value of ‘chdir’ declared with attribute
‘warn_unused_result’
by checking the return value of chdir() and displaying an error message
if an error is reported.
Fixes: e1c24b52adb22 ("selftests: add tests for mount notification")
Cc: Miklos Szeredi <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
---
v2: Update subject and description to reflect that the patch fixes a build
warning.
Use perror() to display an error message if chdir() returns an error.
.../selftests/filesystems/mount-notify/mount-notify_test.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git
a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c
b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c
index e4b7c2b457ee..5c929275e689 100644
--- a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c
+++ b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c
@@ -464,7 +464,8 @@ TEST_F(fanotify, rmdir)
ASSERT_GE(ret, 0);
if (ret == 0) {
- chdir("/");
+ if (chdir("/"))
+ perror("chdir()");
unshare(CLONE_NEWNS);
mount("", "/", NULL, MS_REC|MS_PRIVATE, NULL);
umount2("/a", MNT_DETACH);
--
2.45.2
