linux-stable/fs/kernfs
Amir Goldstein 936e927ece kernfs: do not call fsnotify() with name without a parent
[ Upstream commit 9991bb84b2 ]

When creating an FS_MODIFY event on inode itself (not on parent)
the file_name argument should be NULL.

The change to send a non NULL name to inode itself was done on purpuse
as part of another commit, as Tejun writes: "...While at it, supply the
target file name to fsnotify() from kernfs_node->name.".

But this is wrong practice and inconsistent with inotify behavior when
watching a single file.  When a child is being watched (as opposed to the
parent directory) the inotify event should contain the watch descriptor,
but not the file name.

Fixes: df6a58c5c5 ("kernfs: don't depend on d_find_any_alias()...")
Link: https://lore.kernel.org/r/20200708111156.24659-5-amir73il@gmail.com
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-08-19 08:16:12 +02:00
..
dir.c kernfs: fix ino wrap-around detection 2019-12-13 08:42:53 +01:00
file.c kernfs: do not call fsnotify() with name without a parent 2020-08-19 08:16:12 +02:00
inode.c timestamp_truncate: Replace users of timespec64_trunc 2019-08-30 07:27:17 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
kernfs-internal.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mount.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
symlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00