linux/fs/cachefiles
Christian Brauner 4609e1f18e
fs: port ->permission() to pass mnt_idmap
Convert to struct mnt_idmap.

Last cycle we merged the necessary infrastructure in
256c8aed2b ("fs: introduce dedicated idmap type for mounts").
This is just the conversion to struct mnt_idmap.

Currently we still pass around the plain namespace that was attached to a
mount. This is in general pretty convenient but it makes it easy to
conflate namespaces that are relevant on the filesystem with namespaces
that are relevent on the mount level. Especially for non-vfs developers
without detailed knowledge in this area this can be a potential source for
bugs.

Once the conversion to struct mnt_idmap is done all helpers down to the
really low-level helpers will take a struct mnt_idmap argument instead of
two namespace arguments. This way it becomes impossible to conflate the two
eliminating the possibility of any bugs. All of the vfs and all filesystems
only operate on struct mnt_idmap.

Acked-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
2023-01-19 09:24:28 +01:00
..
cache.c cachefiles: Check that the backing filesystem supports tmpfiles 2022-01-21 21:36:28 +00:00
daemon.c cachefiles: enable on-demand read mode 2022-05-18 00:11:18 +08:00
error_inject.c cachefiles: Add some error injection support 2022-01-07 13:40:56 +00:00
interface.c fs: port vfs_*() helpers to struct mnt_idmap 2023-01-18 17:51:45 +01:00
internal.h cachefiles: make on-demand request distribution fairer 2022-08-31 16:41:10 +01:00
io.c fscache,cachefiles: add prepare_ondemand_read() callback 2022-12-07 10:56:29 +08:00
Kconfig cachefiles: notify the user daemon when looking up cookie 2022-05-18 00:11:17 +08:00
key.c cachefiles: Implement key to filename encoding 2022-01-07 13:42:16 +00:00
main.c cachefiles: Implement object lifecycle funcs 2022-01-07 13:42:08 +00:00
Makefile cachefiles: notify the user daemon when looking up cookie 2022-05-18 00:11:17 +08:00
namei.c fs: port vfs_*() helpers to struct mnt_idmap 2023-01-18 17:51:45 +01:00
ondemand.c cachefiles: make on-demand request distribution fairer 2022-08-31 16:41:10 +01:00
security.c cachefiles: Add security derivation 2022-01-07 13:41:14 +00:00
volume.c fscache, cachefiles: Store the volume coherency data 2022-01-07 13:43:03 +00:00
xattr.c fs: port ->permission() to pass mnt_idmap 2023-01-19 09:24:28 +01:00