Commit 07f6a480 authored Aug 31, 2016 by Eric Sandeen Committed by David Sterba Sep 26, 2016

btrfs: fix perms on demonstration debugfs interface



btrfs provides a helpful demonstration of how to export
a global variable via debugfs; however, it is unique among
other debugfs files in that it is world-writable, which causes
some concern to people who are not familiar with its purpose.

Fix it so that it is only user-writable.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent c79a1751

fs/btrfs/sysfs.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -836,7 +836,7 @@ static int btrfs_init_debugfs(void)
		if (!btrfs_debugfs_root_dentry)
		return -ENOMEM;

		debugfs_create_u64("test", S_IRUGO \| S_IWUGO, btrfs_debugfs_root_dentry,
		debugfs_create_u64("test", S_IRUGO \| S_IWUSR, btrfs_debugfs_root_dentry,
		&btrfs_debugfs_test);
		#endif
		return 0;