Christian Brauner 2f221d6f7b attr: handle idmapped mounts ... When file attributes are changed most filesystems rely on the setattr_prepare(), setattr_copy(), and notify_change() helpers for initialization and permission checking. Let them handle idmapped mounts. If the inode is accessed through an idmapped mount map it into the mount's user namespace. Afterwards the checks are identical to non-idmapped mounts. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Helpers that perform checks on the ia_uid and ia_gid fields in struct iattr assume that ia_uid and ia_gid are intended values and have already been mapped correctly at the userspace-kernelspace boundary as we already do today. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Link: https://lore.kernel.org/r/20210121131959.646623-8-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>		2021-01-24 14:27:16 +01:00
..
9p	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
adfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
affs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
afs	afs: Fix directory entry size calculation	2021-01-04 12:25:19 +00:00
autofs	file: Replace ksys_close with close_fd	2020-12-10 12:42:59 -06:00
befs	…
bfs	inode: make init and permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
btrfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
cachefiles	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
ceph	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
cifs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
coda	…
configfs	namei: make permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
cramfs	…
crypto	inode: make init and permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
debugfs	debugfs: remove return value of debugfs_create_devm_seqfile()	2020-10-30 08:37:39 +01:00
devpts	…
dlm	fs: dlm: check on existing node address	2020-11-10 12:14:20 -06:00
ecryptfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
efivarfs	inode: make init and permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
efs	…
erofs	erofs: avoid using generic_block_bmap	2020-12-10 11:07:40 +08:00
exfat	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
exportfs	exportfs: Add a function to return the raw output from fh_to_dentry()	2020-12-09 09:39:38 -05:00
ext2	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
ext4	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
f2fs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
fat	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
freevxfs	…
fscache	…
fuse	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
gfs2	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
hfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
hfsplus	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
hostfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
hpfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
hugetlbfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
iomap	mm: memcontrol: Use helpers to read page's memcg data	2020-12-02 18:28:05 -08:00
isofs	fs: Replace zero-length array with flexible-array member	2020-10-29 17:22:59 -05:00
jbd2	jbd2: add a helper to find out number of fast commit blocks	2020-12-17 13:30:45 -05:00
jffs2	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
jfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
kernfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
lockd	fs/lockd: convert comma to semicolon	2020-12-16 07:57:37 -05:00
minix	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
nfs	namei: make permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
nfs_common	nfs_common: need lock during iterate through the list	2020-12-09 09:38:34 -05:00
nfsd	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
nilfs2	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
nls	…
notify	fs: add file and path permissions helpers	2021-01-24 14:27:16 +01:00
ntfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
ocfs2	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
omfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
openpromfs	…
orangefs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
overlayfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
proc	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
pstore	Tracing updates for 5.11	2020-12-17 13:22:17 -08:00
qnx4	…
qnx6	…
quota	\n	2020-12-17 11:00:37 -08:00
ramfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
reiserfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
romfs	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-10-24 12:26:05 -07:00
squashfs	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-10-24 12:26:05 -07:00
sysfs	…
sysv	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
tracefs	…
ubifs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
udf	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
ufs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
unicode	…
vboxsf	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2020-10-15 15:11:56 -07:00
verity	fs: add file and path permissions helpers	2021-01-24 14:27:16 +01:00
xfs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
zonefs	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
Kconfig	…
Kconfig.binfmt	…
Makefile	Refactored code for 5.10:	2020-10-23 11:33:41 -07:00
aio.c	Merge branch 'akpm' (patches from Andrew)	2020-12-15 12:53:37 -08:00
anon_inodes.c	…
attr.c	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
bad_inode.c	…
binfmt_aout.c	…
binfmt_elf.c	Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-12-15 19:29:43 -08:00
binfmt_elf_fdpic.c	binfmt_elf, binfmt_elf_fdpic: use a VMA list snapshot	2020-10-16 11:11:21 -07:00
binfmt_em86.c	…
binfmt_flat.c	…
binfmt_misc.c	…
binfmt_script.c	…
block_dev.c	block: pre-initialize struct block_device in bdev_alloc_inode	2021-01-07 20:57:53 -07:00
buffer.c	for-5.11/block-2020-12-14	2020-12-16 12:57:51 -08:00
char_dev.c	…
compat_binfmt_elf.c	elf: Expose ELF header on arch_setup_additional_pages()	2020-10-26 13:46:47 +01:00
coredump.c	Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-12-15 19:29:43 -08:00
d_path.c	fs: fix NULL dereference due to data race in prepend_path()	2020-10-14 14:54:45 -07:00
dax.c	mm: simplify follow_pte{,pmd}	2020-12-15 22:46:19 -08:00
dcache.c	fs: Kill DCACHE_DONTCACHE dentry even if DCACHE_REFERENCED is set	2020-12-10 17:33:17 -05:00
dcookies.c	…
direct-io.c	\n	2020-10-15 15:03:10 -07:00
drop_caches.c	…
eventfd.c	eventfd: Export eventfd_ctx_do_read()	2020-11-15 09:49:10 -05:00
eventpoll.c	epoll: add syscall epoll_pwait2	2020-12-19 11:18:38 -08:00
exec.c	namei: make permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
fcntl.c	inode: make init and permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
fhandle.c	…
file.c	kernel/io_uring: cancel io_uring before task works	2020-12-30 19:36:54 -07:00
file_table.c	epoll: take epitem list out of struct file	2020-10-25 20:02:08 -04:00
filesystems.c	…
fs-writeback.c	writeback: don't warn on an unregistered BDI in __mark_inode_dirty	2020-12-16 11:56:02 +01:00
fs_context.c	…
fs_parser.c	fs_parse: mark fs_param_bad_value() as static	2020-10-13 18:38:27 -07:00
fs_pin.c	…
fs_struct.c	…
fs_types.c	…
fsopen.c	…
init.c	fs: add file and path permissions helpers	2021-01-24 14:27:16 +01:00
inode.c	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
internal.h	for-5.11/block-2020-12-14	2020-12-16 12:57:51 -08:00
io-wq.c	io-wq: kill now unused io_wq_cancel_all()	2020-12-20 10:47:42 -07:00
io-wq.h	io-wq: kill now unused io_wq_cancel_all()	2020-12-20 10:47:42 -07:00
io_uring.c	io_uring: ensure finish_wait() is always called in __io_uring_task_cancel()	2021-01-15 16:04:23 -07:00
ioctl.c	…
kernel_read_file.c	fs/kernel_file_read: Add "offset" arg for partial reads	2020-10-05 13:37:04 +02:00
libfs.c	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
locks.c	Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-12-15 19:29:43 -08:00
mbcache.c	…
mount.h	…
mpage.c	…
namei.c	inode: make init and permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
namespace.c	mount: attach mappings to mounts	2021-01-24 14:27:15 +01:00
no-block.c	…
nsfs.c	…
open.c	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
pipe.c	block: remove i_bdev	2020-12-01 14:53:39 -07:00
pnode.c	…
pnode.h	fs/namespace.c: WARN if mnt_count has become negative	2020-12-10 17:33:17 -05:00
posix_acl.c	inode: make init and permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
proc_namespace.c	proc mountinfo: make splice available again	2020-12-27 12:00:36 -08:00
read_write.c	Refactored code for 5.10:	2020-10-23 11:33:41 -07:00
readdir.c	…
remap_range.c	namei: make permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00
select.c	poll: fix performance regression due to out-of-line __put_user()	2021-01-08 11:06:29 -08:00
seq_file.c	fix return values of seq_read_iter()	2020-11-15 22:12:53 -05:00
signalfd.c	…
splice.c	io_uring-5.10-2020-10-24	2020-10-24 12:40:18 -07:00
stack.c	…
stat.c	…
statfs.c	block: remove i_bdev	2020-12-01 14:53:39 -07:00
super.c	block: remove i_bdev	2020-12-01 14:53:39 -07:00
sync.c	…
timerfd.c	…
userfaultfd.c	userfaultfd: add user-mode only option to unprivileged_userfaultfd sysctl knob	2020-12-15 12:13:46 -08:00
utimes.c	attr: handle idmapped mounts	2021-01-24 14:27:16 +01:00
xattr.c	inode: make init and permission helpers idmapped mount aware	2021-01-24 14:27:16 +01:00