Amir Goldstein cc0918b358 ovl: add support for appending lowerdirs one by one ... [ Upstream commit 24e16e385f2272b1a9df51337a5c32d28a29c7ad ] Add new mount options lowerdir+ and datadir+ that can be used to add layers to lower layers stack one by one. Unlike the legacy lowerdir mount option, special characters (i.e. colons and cammas) are not unescaped with these new mount options. The new mount options can be repeated to compose a large stack of lower layers, but they may not be mixed with the lagacy lowerdir mount option, because for displaying lower layers in mountinfo, we do not want to mix escaped with unescaped lower layers path syntax. Similar to data-only layer rules with the lowerdir mount option, the datadir+ option must follow at least one lowerdir+ option and the lowerdir+ option must not follow the datadir+ option. If the legacy lowerdir mount option follows lowerdir+ and datadir+ mount options, it overrides them. Sepcifically, calling: fsconfig(FSCONFIG_SET_STRING, "lowerdir", "", 0); can be used to reset previously setup lower layers. Suggested-by: Miklos Szeredi <miklos@szeredi.hu> Link: https://lore.kernel.org/r/CAJfpegt7VC94KkRtb1dfHG8+4OzwPBLYqhtc8=QFUxpFJE+=RQ@mail.gmail.com/ Signed-off-by: Amir Goldstein <amir73il@gmail.com> Stable-dep-of: 2824083db76c ("ovl: Always reject mounting over case-insensitive directories") Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-03-26 18:19:18 -04:00
..
caching	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
ext4	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
nfs	NFSD 6.6 Release Notes	2023-08-31 15:32:18 -07:00
smb	smb3: move Documentation/filesystems/cifs to Documentation/filesystems/smb	2023-05-24 16:29:21 -05:00
spufs	Documentation: spufs: correct a duplicate word typo	2022-09-27 13:21:44 -06:00
9p.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
adfs.rst	docs: filesystems: convert adfs.txt to ReST	2020-03-02 13:58:44 -07:00
affs.rst	affs: fix basic permission bits to actually work	2020-08-31 12:20:31 +02:00
afs.rst	afs: Documentation: correct reference to CONFIG_AFS_FS	2023-07-21 13:46:02 -06:00
api-summary.rst	block: move fs/block_dev.c to block/bdev.c	2021-09-07 08:39:40 -06:00
autofs-mount-control.rst	autofs: use flexible array in ioctl structure	2023-05-30 16:42:00 -07:00
autofs.rst	autofs: use flexible array in ioctl structure	2023-05-30 16:42:00 -07:00
automount-support.rst	docs: filesystems: convert automount-support.txt to ReST	2020-05-05 09:22:21 -06:00
befs.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
bfs.rst	docs: filesystems: convert bfs.txt to ReST	2020-03-02 14:01:26 -07:00
btrfs.rst	MAINTAINERS: remove links to obsolete btrfs.wiki.kernel.org	2023-09-08 14:21:27 +02:00
ceph.rst	ceph: update documentation regarding snapshot naming limitations	2023-08-24 11:24:36 +02:00
coda.rst	Documentation: coda: annotate duplicated words	2020-07-13 10:02:32 -06:00
configfs.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
cramfs.rst	docs: filesystems: convert cramfs.txt to ReST	2020-03-02 14:02:07 -07:00
dax.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
debugfs.rst	debugfs: small Documentation cleaning	2022-11-09 13:58:55 -07:00
devpts.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
directory-locking.rst	rename(): fix the locking of subdirectories	2024-01-31 16:18:57 -08:00
dlmfs.rst	docs: update ocfs2-devel mailing list address	2023-07-08 09:29:29 -07:00
dnotify.rst	docs: filesystems: convert dnotify.txt to ReST	2020-05-05 09:22:22 -06:00
ecryptfs.rst	docs: prevent warnings due to autosectionlabel	2020-03-20 17:01:29 -06:00
efivarfs.rst	docs: filesystems: add info about efivars content	2020-05-25 18:59:59 -06:00
erofs.rst	erofs: update documentation	2023-09-28 22:40:14 +08:00
ext2.rst	ext2: remove nobh support	2022-08-02 12:34:04 -04:00
ext3.rst	docs: filesystems: convert ext3.txt to ReST	2020-03-02 14:03:16 -07:00
f2fs.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
fiemap.rst	A lot of bug fixes and cleanups for ext4, including:	2020-06-05 16:19:28 -07:00
files.rst	file: Rename fcheck lookup_fd_rcu	2020-12-10 12:40:07 -06:00
fscrypt.rst	fscrypt: improve the "Encryption modes and usage" section	2023-07-11 22:56:24 -07:00
fsverity.rst	ovl: Add framework for verity support	2023-08-12 19:02:38 +03:00
fuse-io.rst	docs: filesystems: convert fuse-io.txt to ReST	2020-05-05 09:22:22 -06:00
fuse.rst	fuse: Add module param for CAP_SYS_ADMIN access bypassing allow_other	2022-07-21 16:06:19 +02:00
gfs2-glocks.rst	gfs2 fixes	2023-09-05 13:00:28 -07:00
gfs2-uevents.rst	docs: filesystems: convert gfs2-uevents.txt to ReST	2020-03-02 14:03:35 -07:00
gfs2.rst	Documentation: Update filesystems/gfs2.rst	2020-12-01 00:25:20 +01:00
hfs.rst	Replace HTTP links with HTTPS ones: Documentation/filesystems	2020-06-26 11:14:12 -06:00
hfsplus.rst	docs: filesystems: convert hfsplus.txt to ReST	2020-03-02 14:03:47 -07:00
hpfs.rst	Replace HTTP links with HTTPS ones: Documentation/filesystems	2020-06-26 11:14:12 -06:00
idmappings.rst	Documentation work keeps chugging along; stuff for 6.6 includes:	2023-08-30 20:05:42 -07:00
index.rst	docs: add maintainer entry profile for XFS	2023-08-10 07:47:53 -07:00
inotify.rst	docs: filesystems: convert inotify.txt to ReST	2020-03-02 14:03:55 -07:00
isofs.rst	docs: filesystems: convert isofs.txt to ReST	2020-03-02 14:04:06 -07:00
journalling.rst	jbd2: drop jbd2_fc_init documentation	2020-11-06 23:01:03 -05:00
locking.rst	rename(): fix the locking of subdirectories	2024-01-31 16:18:57 -08:00
locks.rst	docs: fs: locks.rst: update comment about mandatory file locking	2021-10-19 06:48:21 -04:00
mount_api.rst	fs_context: drop the unused lsm_flags member	2023-03-16 14:38:28 +01:00
netfs_library.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
nilfs2.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
ntfs.rst	docs: filesystems: convert ntfs.txt to ReST	2020-03-02 14:04:06 -07:00
ntfs3.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
ocfs2-online-filecheck.rst	docs: filesystems: convert ocfs2-online-filecheck.txt to ReST	2020-03-02 14:04:06 -07:00
ocfs2.rst	docs: update ocfs2-devel mailing list address	2023-07-08 09:29:29 -07:00
omfs.rst	Replace HTTP links with HTTPS ones: OMFS	2020-07-13 11:24:43 -06:00
orangefs.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
overlayfs.rst	ovl: add support for appending lowerdirs one by one	2024-03-26 18:19:18 -04:00
path-lookup.rst	Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-07-03 11:41:14 -07:00
path-lookup.txt	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
porting.rst	rename(): fix the locking of subdirectories	2024-01-31 16:18:57 -08:00
proc.rst	- Stefan Roesch has added ksm statistics to /proc/pid/smaps	2023-09-05 10:56:27 -07:00
qnx6.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
quota.rst	quota: Fixup http links in quota doc	2020-07-09 08:14:01 +02:00
ramfs-rootfs-initramfs.rst	Documentation/filesystems: ramfs-rootfs-initramfs: use :Author:	2023-05-16 12:55:35 -06:00
relay.rst	docs: filesystems: convert relay.txt to ReST	2020-03-02 14:04:41 -07:00
romfs.rst	docs: filesystems: convert romfs.txt to ReST	2020-03-02 14:04:41 -07:00
seq_file.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
sharedsubtree.rst	Documentation/filesystems: sharedsubtree: add section headings	2023-05-16 12:50:05 -06:00
splice.rst	…
squashfs.rst	docs: filesystems: convert squashfs.txt to ReST	2020-03-02 14:04:41 -07:00
sysfs.rst	driver core: bus: mark the struct bus_type for sysfs callbacks as constant	2023-03-23 13:20:40 +01:00
sysv-fs.rst	docs: filesystems: convert sysv-fs.txt to ReST	2020-03-02 14:04:41 -07:00
tmpfs.rst	tmpfs,xattr: enable limited user extended attributes	2023-08-10 12:06:04 +02:00
ubifs-authentication.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
ubifs.rst	Documentation: ubifs: Fix compression idiom	2022-10-10 13:01:10 -06:00
udf.rst	udf: Replace HTTP links with HTTPS ones	2020-07-14 14:37:39 +02:00
vfat.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
vfs.rst	Documentation work keeps chugging along; stuff for 6.6 includes:	2023-08-30 20:05:42 -07:00
virtiofs.rst	virtiofs: Add mount option and atime behavior to the doc	2020-04-20 17:01:34 +02:00
xfs-delayed-logging-design.rst	Documentation: filesystems: correct possessive "its"	2022-09-27 13:21:44 -06:00
xfs-maintainer-entry-profile.rst	docs: add maintainer entry profile for XFS	2023-08-10 07:47:53 -07:00
xfs-online-fsck-design.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
xfs-self-describing-metadata.rst	xfs: document the filesystem metadata checking strategy	2023-04-11 18:59:47 -07:00
zonefs.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00