Christian Brauner 02f92b3868
fs: add file and path permissions helpers
Add two simple helpers to check permissions on a file and path
respectively and convert over some callers. It simplifies quite a few
codepaths and also reduces the churn in later patches quite a bit.
Christoph also correctly points out that this makes codepaths (e.g.
ioctls) way easier to follow that would otherwise have to do more
complex argument passing than necessary.

Link: https://lore.kernel.org/r/20210121131959.646623-4-christian.brauner@ubuntu.com
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
2021-01-24 14:27:16 +01:00
..
2020-12-15 12:13:47 -08:00
2020-12-16 14:44:53 -08:00
2020-12-22 12:55:09 -08:00
2020-12-15 14:48:04 -08:00
2020-12-18 12:38:28 -08:00
2020-12-29 15:36:49 -08:00
2020-12-15 14:48:04 -08:00
2020-12-15 13:22:29 -08:00
2020-12-15 12:13:41 -08:00
2020-12-15 14:48:04 -08:00
2020-12-15 22:46:15 -08:00
2020-12-15 12:13:47 -08:00
2020-11-19 10:36:36 +01:00