Max Kellermann 952d0cbd1f fs/kernfs/dir: obey S_ISGID ... [ Upstream commit 5133bee62f ] Handling of S_ISGID is usually done by inode_init_owner() in all other filesystems, but kernfs doesn't use that function. In kernfs, struct kernfs_node is the primary data structure, and struct inode is only created from it on demand. Therefore, inode_init_owner() can't be used and we need to imitate its behavior. S_ISGID support is useful for the cgroup filesystem; it allows subtrees managed by an unprivileged process to retain a certain owner gid, which then enables sharing access to the subtree with another unprivileged process. -- v1 -> v2: minor coding style fix (comment) Signed-off-by: Max Kellermann <max.kellermann@ionos.com> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20231208093310.297233-2-max.kellermann@ionos.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-02-05 20:14:32 +00:00
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dir.c	fs/kernfs/dir: obey S_ISGID	2024-02-05 20:14:32 +00:00
file.c	tty, proc, kernfs, random: Use copy_splice_read()	2023-05-24 08:42:16 -06:00
inode.c	v6.6-vfs.tmpfs	2023-08-28 09:55:25 -07:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
kernfs-internal.h	kernfs: Use a per-fs rwsem to protect per-fs list of kernfs_super_info.	2023-03-29 12:23:45 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
mount.c	kernfs: attach uuid for every kernfs and report it in fsid	2023-08-05 08:32:39 +02:00
symlink.c	kernfs: fix all kernel-doc warnings and multiple typos	2022-11-23 19:28:26 +01:00