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Christian Brauner 6521f89170
namei: prepare for idmapped mounts 
The various vfs_*() helpers are called by filesystems or by the vfs
itself to perform core operations such as create, link, mkdir, mknod, rename,
rmdir, tmpfile and unlink. Enable them to handle idmapped mounts. If the
inode is accessed through an idmapped mount map it into the
mount's user namespace and pass it down. Afterwards the checks and
operations 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.

Link: https://lore.kernel.org/r/20210121131959.646623-15-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 14:27:18 +01:00
..
9p stat: handle idmapped mounts 2021-01-24 14:27:17 +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 stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
autofs file: Replace ksys_close with close_fd 2020-12-10 12:42:59 -06:00
befs
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bfs inode: make init and permission helpers idmapped mount aware 2021-01-24 14:27:16 +01:00
btrfs namei: handle idmapped mounts in may_*() helpers 2021-01-24 14:27:17 +01:00
cachefiles namei: prepare for idmapped mounts 2021-01-24 14:27:18 +01:00
ceph stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
cifs stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
coda stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
configfs namei: make permission helpers idmapped mount aware 2021-01-24 14:27:16 +01:00
cramfs
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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
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dlm fs: dlm: check on existing node address 2020-11-10 12:14:20 -06:00
ecryptfs namei: prepare for idmapped mounts 2021-01-24 14:27:18 +01:00
efivarfs inode: make init and permission helpers idmapped mount aware 2021-01-24 14:27:16 +01:00
efs
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erofs stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
exfat stat: handle idmapped mounts 2021-01-24 14:27:17 +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 stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
ext4 stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
f2fs stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
fat stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
freevxfs
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fscache
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fuse stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
gfs2 stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
hfs acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
hfsplus stat: handle idmapped mounts 2021-01-24 14:27:17 +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 acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
jfs acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
kernfs stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
lockd fs/lockd: convert comma to semicolon 2020-12-16 07:57:37 -05:00
minix stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
nfs stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
nfs_common nfs_common: need lock during iterate through the list 2020-12-09 09:38:34 -05:00
nfsd namei: prepare for idmapped mounts 2021-01-24 14:27:18 +01:00
nilfs2 attr: handle idmapped mounts 2021-01-24 14:27:16 +01:00
nls
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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 stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
omfs attr: handle idmapped mounts 2021-01-24 14:27:16 +01:00
openpromfs
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orangefs stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
overlayfs namei: prepare for idmapped mounts 2021-01-24 14:27:18 +01:00
proc stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
pstore Tracing updates for 5.11 2020-12-17 13:22:17 -08:00
qnx4
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qnx6
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quota \n 2020-12-17 11:00:37 -08:00
ramfs attr: handle idmapped mounts 2021-01-24 14:27:16 +01:00
reiserfs acl: handle idmapped mounts 2021-01-24 14:27:17 +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
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sysv stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
tracefs
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ubifs stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
udf stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
ufs attr: handle idmapped mounts 2021-01-24 14:27:16 +01:00
unicode
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vboxsf stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
verity fs: add file and path permissions helpers 2021-01-24 14:27:16 +01:00
xfs acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
zonefs attr: handle idmapped mounts 2021-01-24 14:27:16 +01:00
Kconfig
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Kconfig.binfmt
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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
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attr.c commoncap: handle idmapped mounts 2021-01-24 14:27:17 +01:00
bad_inode.c
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binfmt_aout.c
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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
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binfmt_flat.c
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binfmt_misc.c
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binfmt_script.c
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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
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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
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direct-io.c \n 2020-10-15 15:03:10 -07:00
drop_caches.c
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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
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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
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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
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fs_parser.c fs_parse: mark fs_param_bad_value() as static 2020-10-13 18:38:27 -07:00
fs_pin.c
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fs_struct.c
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fs_types.c
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fsopen.c
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init.c namei: prepare for idmapped mounts 2021-01-24 14:27:18 +01:00
inode.c namei: handle idmapped mounts in may_*() helpers 2021-01-24 14:27:17 +01:00
internal.h namei: handle idmapped mounts in may_*() helpers 2021-01-24 14:27:17 +01:00
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
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kernel_read_file.c
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libfs.c stat: handle idmapped mounts 2021-01-24 14:27:17 +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
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mount.h
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mpage.c
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namei.c namei: prepare for idmapped mounts 2021-01-24 14:27:18 +01:00
namespace.c mount: attach mappings to mounts 2021-01-24 14:27:15 +01:00
no-block.c
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nsfs.c
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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
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pnode.h fs/namespace.c: WARN if mnt_count has become negative 2020-12-10 17:33:17 -05:00
posix_acl.c acl: handle idmapped mounts 2021-01-24 14:27:17 +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
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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
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splice.c io_uring-5.10-2020-10-24 2020-10-24 12:40:18 -07:00
stack.c
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stat.c stat: handle idmapped mounts 2021-01-24 14:27:17 +01:00
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
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timerfd.c
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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 namei: handle idmapped mounts in may_*() helpers 2021-01-24 14:27:17 +01:00