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Christian Brauner b0fa673c8c fs: add file and path permissions helpers 
[ Upstream commit 02f92b3868a1b34ab98464e76b0e4e060474ba10 ]

Add two simple helpers to check permissions on a file and path
respectively and convert over some callers. It simplifies quite a few
codepaths and also reduces the churn in later patches quite a bit.
Christoph also correctly points out that this makes codepaths (e.g.
ioctls) way easier to follow that would otherwise have to do more
complex argument passing than necessary.

Link: https://lore.kernel.org/r/20210121131959.646623-4-christian.brauner@ubuntu.com
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-06-21 14:52:58 +02:00
..
9p
fs/9p: drop inodes immediately on non-.L too
2024-05-17 11:48:05 +02:00
adfs
…
affs
affs: initialize fsdata in affs_truncate()
2023-02-01 08:23:11 +01:00
afs
afs: Don't cross .backup mountpoint from backup volume
2024-06-16 13:32:30 +02:00
autofs
file: Replace ksys_close with close_fd
2024-06-21 14:52:50 +02:00
befs
…
bfs
…
btrfs
btrfs: add missing mutex_unlock in btrfs_relocate_sys_chunks()
2024-05-25 16:19:06 +02:00
cachefiles
cachefiles: fix memory leak in cachefiles_add_cache()
2024-03-06 14:37:50 +00:00
ceph
ceph: prevent use-after-free in encode_cap_msg()
2024-02-23 08:42:29 +01:00
cifs
cifs: add a warning when the in-flight count goes negative
2024-03-01 13:16:46 +01:00
coda
coda: Avoid partial allocation of sig_inputArgs
2023-03-11 16:39:51 +01:00
configfs
Revert "configfs: fix a race in configfs_lookup()"
2023-09-21 09:45:15 +02:00
cramfs
…
crypto
fscrypt: fix keyring memory leak on mount failure
2022-11-10 18:14:25 +01:00
debugfs
debugfs: fix automount d_fsdata usage
2024-01-25 14:37:36 -08:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:25:39 +01:00
dlm
dlm: fix plock lookup when using multiple lockspaces
2023-09-19 12:20:22 +02:00
ecryptfs
ecryptfs: Fix buffer size for tag 66 packet
2024-06-16 13:32:01 +02:00
efivarfs
efivarfs: force RO when remounting if SetVariable is not supported
2024-01-25 14:37:40 -08:00
efs
…
erofs
erofs: fix lz4 inplace decompression
2024-03-01 13:16:48 +01:00
exfat
exfat: support handle zero-size directory
2023-11-28 16:54:52 +00:00
exportfs
exportfs: Add a function to return the raw output from fh_to_dentry()
2024-06-21 14:52:46 +02:00
ext2
ext2: fix datatype of block number in ext2_xattr_set2()
2023-09-23 11:01:07 +02:00
ext4
ext4: fix mb_cache_entry's e_refcnt leak in ext4_xattr_block_cache_find()
2024-06-16 13:32:36 +02:00
f2fs
f2fs: compress: fix compression chksum
2024-06-16 13:32:36 +02:00
fat
fat: fix uninitialized field in nostale filehandles
2024-04-13 12:58:08 +02:00
freevxfs
…
fscache
fscache: Fix cookie key hashing
2021-09-18 13:40:15 +02:00
fuse
fuse: don't unhash root
2024-04-13 12:58:19 +02:00
gfs2
gfs2: Fix "ignore unlock failures after withdraw"
2024-06-16 13:32:05 +02:00
hfs
hfs: fix missing hfs_bnode_get() in __hfs_bnode_create
2023-03-11 16:39:55 +01:00
hfsplus
fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode()
2023-05-30 12:57:47 +01:00
hostfs
hostfs: fix memory handling in follow_link()
2021-04-14 08:42:06 +02:00
hpfs
…
hugetlbfs
mm: hugetlb pages should not be reserved by shmat() if SHM_NORESERVE
2024-03-15 10:48:22 -04:00
iomap
xfs: use current->journal_info for detecting transaction recursion
2022-07-07 17:52:19 +02:00
isofs
isofs: handle CDs with bad root inode but good Joliet root directory
2024-04-13 12:59:46 +02:00
jbd2
jbd2: Fix wrongly judgement for buffer head removing while doing checkpoint
2024-03-01 13:16:47 +01:00
jffs2
jffs2: prevent xattr node from overflowing the eraseblock
2024-06-16 13:32:02 +02:00
jfs
jfs: fix array-index-out-of-bounds in diNewExt
2024-02-23 08:42:04 +01:00
kernfs
fs/kernfs/dir: obey S_ISGID
2024-02-23 08:42:14 +01:00
lockd
SUNRPC: Make trace_svc_process() display the RPC procedure symbolically
2024-06-21 14:52:50 +02:00
minix
minix: fix bug when opening a file with O_DIRECT
2022-04-13 21:01:01 +02:00
nfs
nfs: use change attribute for NFS re-exports
2024-06-21 14:52:57 +02:00
nfs_common
NFSv4_2: SSC helper should use its own config.
2024-06-21 14:52:57 +02:00
nfsd
nfsd: skip some unnecessary stats in the v4 case
2024-06-21 14:52:58 +02:00
nilfs2
nilfs2: fix use-after-free of timer for log writer thread
2024-06-16 13:32:31 +02:00
nls
fs/nls: make load_nls() take a const parameter
2023-09-19 12:20:04 +02:00
notify
fs: add file and path permissions helpers
2024-06-21 14:52:58 +02:00
ntfs
ntfs: check overflow when iterating ATTR_RECORDs
2022-11-25 17:45:57 +01:00
ocfs2
fs: ocfs2: namei: check return value of ocfs2_add_entry()
2023-09-19 12:20:09 +02:00
omfs
…
openpromfs
openpromfs: finish conversion to the new mount API
2024-06-16 13:32:01 +02:00
orangefs
orangefs: Fix kmemleak in orangefs_{kernel,client}_debug_init()
2023-01-14 10:16:20 +01:00
overlayfs
ima: detect changes to the backing overlay file
2023-11-28 16:54:57 +00:00
proc
proc/fd: In fdinfo seq_show don't use get_files_struct
2024-06-21 14:52:49 +02:00
pstore
pstore/zone: Add a null pointer check to the psz_kmsg_read
2024-04-13 12:59:41 +02:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-30 10:11:08 +02:00
qnx6
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quota
quota: Fix rcu annotations of inode dquot pointers
2024-03-26 18:21:56 -04:00
ramfs
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
2023-07-27 08:44:13 +02:00
reiserfs
reiserfs: Check the return value from __getblk()
2023-09-19 12:20:06 +02:00
romfs
…
squashfs
revert "squashfs: harden sanity check in squashfs_read_xattr_id_table"
2023-02-22 12:55:56 +01:00
sysfs
fs: sysfs: Fix reference leak in sysfs_break_active_protection()
2024-05-02 16:23:39 +02:00
sysv
sysv: don't call sb_bread() with pointers_lock held
2024-04-13 12:59:45 +02:00
tracefs
tracefs: Add missing lockdown check to tracefs_create_dir()
2023-09-23 11:01:10 +02:00
ubifs
ubifs: Set page uptodate in the correct place
2024-04-13 12:58:09 +02:00
udf
fs: add file and path permissions helpers
2024-06-21 14:52:58 +02:00
ufs
…
unicode
…
vboxsf
vboxsf: Avoid an spurious warning if load_nls_xxx() fails
2024-04-13 12:59:25 +02:00
verity
fs: add file and path permissions helpers
2024-06-21 14:52:58 +02:00
xfs
xfs: verify buffer contents when we skip log replay
2023-06-14 11:09:59 +02:00
zonefs
zonefs: Improve error handling
2024-03-01 13:16:43 +01:00
aio.c
fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion
2024-04-13 12:58:53 +02:00
anon_inodes.c
…
attr.c
attr: block mode changes of symlinks
2023-09-23 11:01:09 +02:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
fs: binfmt_elf_efpic: fix personality for ELF-FDPIC
2023-10-10 21:53:35 +02:00
binfmt_elf.c
fs/binfmt_elf: Fix memory leak in load_elf_binary()
2022-11-03 23:57:49 +09:00
binfmt_em86.c
…
binfmt_flat.c
binfmt_flat: do not stop relocating GOT entries prematurely on riscv
2022-06-09 10:20:47 +02:00
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2023-01-14 10:16:13 +01:00
binfmt_script.c
…
block_dev.c
block: Don't invalidate pagecache for invalid falloc modes
2024-01-15 18:48:03 +01:00
buffer.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-25 17:45:56 +01:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2023-01-14 10:15:59 +01:00
compat_binfmt_elf.c
…
coredump.c
exec: Simplify unshare_files
2024-06-21 14:52:47 +02:00
d_path.c
…
dax.c
dax: fix cache flush on PMD-mapped pages
2022-06-09 10:21:16 +02:00
dcache.c
fast_dput(): handle underflows gracefully
2024-02-23 08:42:10 +01:00
dcookies.c
…
direct-io.c
fs: direct-io: fix missing sdio->boundary
2021-04-14 08:41:58 +02:00
drop_caches.c
…
eventfd.c
eventfd: prevent underflow for eventfd semaphores
2023-09-19 12:20:06 +02:00
eventpoll.c
epoll: ep_autoremove_wake_function should use list_del_init_careful
2023-06-21 15:45:37 +02:00
exec.c
exec: Simplify unshare_files
2024-06-21 14:52:47 +02:00
fcntl.c
fcntl: fix potential deadlocks for &fown_struct.lock
2022-10-30 09:41:18 +01:00
fhandle.c
do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak
2024-03-26 18:21:47 -04:00
file_table.c
SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
2022-05-18 10:23:48 +02:00
file.c
file: Rename __close_fd to close_fd and remove the files parameter
2024-06-21 14:52:49 +02:00
filesystems.c
…
fs_context.c
fs: avoid empty option when generating legacy mount string
2023-07-27 08:44:13 +02:00
fs_parser.c
…
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
writeback: fix call of incorrect macro
2023-05-17 11:48:10 +02:00
fsopen.c
…
init.c
fs: add file and path permissions helpers
2024-06-21 14:52:58 +02:00
inode.c
fs: add ctime accessors infrastructure
2023-12-08 08:46:15 +01:00
internal.h
fs: Establish locking order for unrelated directories
2023-07-27 08:44:13 +02:00
ioctl.c
lsm: new security_file_ioctl_compat() hook
2024-02-23 08:41:53 +01:00
Kconfig
NFSv4_2: SSC helper should use its own config.
2024-06-21 14:52:57 +02:00
Kconfig.binfmt
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kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-27 09:56:51 +02:00
libfs.c
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
2023-01-14 10:15:19 +01:00
locks.c
file: Factor files_lookup_fd_locked out of fcheck_files
2024-06-21 14:52:48 +02:00
Makefile
io_uring: import 5.15-stable io_uring
2023-01-04 11:39:23 +01:00
mbcache.c
mbcache: Avoid nesting of cache->c_list_lock under bit locks
2023-01-14 10:16:50 +01:00
mount.h
…
mpage.c
…
namei.c
rename(): fix the locking of subdirectories
2024-02-23 08:41:54 +01:00
namespace.c
fs: indicate request originates from old mount API
2024-01-25 14:37:42 -08:00
no-block.c
…
nsfs.c
…
open.c
fs: add file and path permissions helpers
2024-06-21 14:52:58 +02:00
pipe.c
pipe: wakeup wr_wait after setting max_usage
2024-02-23 08:42:00 +01:00
pnode.c
pnode: terminate at peers of source
2023-01-14 10:16:27 +01:00
pnode.h
…
posix_acl.c
…
proc_namespace.c
…
read_write.c
vfs: fix copy_file_range() averts filesystem freeze protection
2022-12-19 12:27:30 +01:00
readdir.c
readdir: make sure to verify directory entry for legacy interfaces too
2021-04-21 13:00:54 +02:00
remap_range.c
fs/remap: constrain dedupe of EOF blocks
2022-07-21 21:20:01 +02:00
select.c
fs/select: rework stack allocation hack for clang
2024-03-26 18:21:47 -04:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-20 16:05:59 +02:00
signalfd.c
io_uring: disable polling pollfree files
2022-09-05 10:28:58 +02:00
splice.c
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
2022-10-17 17:26:07 +02:00
stack.c
…
stat.c
stat: fix inconsistency between struct stat and struct compat_stat
2022-04-27 13:53:54 +02:00
statfs.c
statfs: enforce statfs[64] structure initialization
2023-05-30 12:57:55 +01:00
super.c
fs: Protect reconfiguration of sb read-write from racing writes
2023-08-11 11:57:54 +02:00
sync.c
vfs: make sync_filesystem return errors from ->sync_fs
2022-08-31 17:15:14 +02:00
timerfd.c
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userfaultfd.c
userfaultfd: open userfaultfds with O_RDONLY
2022-10-26 13:25:17 +02:00
utimes.c
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xattr.c
fs: don't audit the capability check in simple_xattr_list()
2023-01-14 10:15:16 +01:00