Miklos Szeredi 438c84c2f0 ovl: don't follow redirects if redirect_dir=off ... Overlayfs is following redirects even when redirects are disabled. If this is unintentional (probably the majority of cases) then this can be a problem. E.g. upper layer comes from untrusted USB drive, and attacker crafts a redirect to enable read access to otherwise unreadable directories. If "redirect_dir=off", then turn off following as well as creation of redirects. If "redirect_dir=follow", then turn on following, but turn off creation of redirects (which is what "redirect_dir=off" does now). This is a backward incompatible change, so make it dependent on a config option. Reported-by: David Howells <dhowells@redhat.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>		2017-12-11 11:28:10 +01:00
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caching	fscache: remove unused ->now_uncached callback	2017-09-06 17:27:26 -07:00
cifs	CIFS/SMB3: Update documentation to reflect SMB3 and various changes	2017-09-17 10:48:00 -05:00
configfs	fs: configfs: don't return anything from drop_link	2016-12-01 10:50:49 +01:00
nfs	doc: ReSTify keys-request-key.txt	2017-05-18 10:33:51 -06:00
pohmelfs	Documentation: fix common spelling mistakes	2016-04-28 07:51:59 -06:00
00-INDEX	logfs: remove from tree	2016-12-14 23:48:11 -05:00
9p.txt	9p: update documentation	2014-01-24 10:55:21 -06:00
Locking	vfs: add flags to d_real()	2017-09-04 21:42:22 +02:00
adfs.txt	…
affs.txt	affs: add mount option to avoid filename truncates	2014-04-07 16:36:08 -07:00
afs.txt	afs: Fix documentation on # vs % prefix in mount source specification	2017-11-13 15:38:19 +00:00
autofs4-mount-control.txt	autofs: update ioctl documentation regarding struct autofs_dev_ioctl	2017-02-27 18:43:45 -08:00
autofs4.txt	Fix up over-eager 'wait_queue_t' renaming	2017-07-10 11:40:19 -07:00
automount-support.txt	Documentation: remove outdated information from automount-support.txt	2015-05-15 01:10:38 -04:00
befs.txt	…
bfs.txt	Tigran has moved	2017-05-12 15:57:15 -07:00
btrfs.txt	Documentation: btrfs: remove usage specific information	2016-03-11 17:02:09 +01:00
ceph.txt	ceph: set io_pages bdi hint	2017-02-20 12:16:05 +01:00
coda.txt	…
conf.py	docs-rst: convert filesystems book to ReST	2017-05-16 08:44:08 -03:00
cramfs.txt	cramfs: rehabilitate it	2017-10-15 00:47:23 -04:00
dax.txt	dax: use common 4k zero page for dax mmap reads	2017-09-06 17:27:24 -07:00
debugfs.txt	debugfs: Pass bool pointer to debugfs_create_bool()	2015-10-04 11:36:07 +01:00
devpts.txt	devpts: Make each mount of devpts an independent filesystem.	2016-06-05 10:36:01 -07:00
directory-locking	vfs: remove unused i_op->rename	2016-09-27 11:03:58 +02:00
dlmfs.txt	ocfs2: update web page + git tree in documentation	2015-02-28 09:57:50 -08:00
dnotify.txt	Documentation: fix selftests related file refs	2017-10-19 12:58:21 -06:00
ecryptfs.txt	…
efivarfs.txt	efi: Make efivarfs entries immutable by default	2016-02-10 16:25:52 +00:00
exofs.txt	…
ext2.txt	fs: Remove ext3 filesystem driver	2015-07-23 20:59:40 +02:00
ext3.txt	fs: Remove ext3 filesystem driver	2015-07-23 20:59:40 +02:00
ext4.txt	Documentation: fix little inconsistencies	2017-09-26 14:30:48 -06:00
f2fs.txt	f2fs: support journalled quota	2017-08-21 15:54:48 -07:00
fiemap.txt	fsioctl.c: make generic_block_fiemap() signal-tolerant	2015-02-10 14:30:30 -08:00
files.txt	…
fscrypt.rst	fscrypt: add a documentation file for filesystem-level encryption	2017-10-31 13:49:24 -04:00
fuse.txt	…
gfs2-glocks.txt	gfs2: Remove gl_spin define	2015-10-29 12:57:48 -05:00
gfs2-uevents.txt	…
gfs2.txt	…
hfs.txt	…
hfsplus.txt	Documentation: update URL to hfsplus Technote 1150	2014-02-20 14:48:51 +01:00
hpfs.txt	…
index.rst	fscrypt: add a documentation file for filesystem-level encryption	2017-10-31 13:49:24 -04:00
inotify.txt	inotify: update documentation to reflect code changes	2015-02-10 14:30:28 -08:00
isofs.txt	…
jfs.txt	…
locks.txt	docs: fix locations of several documents that got moved	2016-10-24 08:12:35 -02:00
mandatory-locking.txt	…
ncpfs.txt	…
nilfs2.txt	nilfs2: move ioctl interface and disk layout to uapi separately	2016-08-02 19:35:21 -04:00
ntfs.txt	NTFS: Remove changelog from Documentation/filesystems/ntfs.txt.	2014-10-16 12:43:57 +01:00
ocfs2-online-filecheck.txt	Doc: ocfs: Fix typo in filesystems/ocfs2-online-filecheck.txt	2016-07-01 16:17:15 -06:00
ocfs2.txt	ocfs2: update web page + git tree in documentation	2015-02-28 09:57:50 -08:00
omfs.txt	…
orangefs.txt	orangefs: documentation clean up	2017-09-14 14:54:39 -04:00
overlayfs.txt	ovl: don't follow redirects if redirect_dir=off	2017-12-11 11:28:10 +01:00
path-lookup.md	locking/atomics, doc/filesystems: Convert ACCESS_ONCE() references	2017-10-25 11:01:05 +02:00
path-lookup.txt	Documentation: add new description of path-name lookup.	2015-11-02 18:18:25 -07:00
porting	vfs: grab the lock instead of blocking in __fd_install during resizing	2017-11-05 18:58:07 -05:00
proc.txt	proc, coredump: add CoreDumping flag to /proc/pid/status	2017-11-17 16:10:00 -08:00
qnx6.txt	Documentation: fix common spelling mistakes	2016-04-28 07:51:59 -06:00
quota.txt	scripts/spelling.txt: add "an user" pattern and fix typo instances	2017-02-27 18:43:46 -08:00
ramfs-rootfs-initramfs.txt	initmpfs: use initramfs if rootfstype= or root= specified	2013-09-11 15:59:38 -07:00
relay.txt	doc: Fix typo in doucmentations	2013-07-25 12:34:15 +02:00
romfs.txt	…
seq_file.txt	Documentation: update seq_file	2014-12-29 15:40:18 -07:00
sharedsubtree.txt	doc: fix grammar	2016-03-09 15:33:06 -07:00
spufs.txt	…
squashfs.txt	Squashfs: Add LZ4 compression configuration option	2014-11-27 18:48:44 +00:00
sysfs-pci.txt	PCI: Add pci_mmap_resource_range() and use it for ARM64	2017-04-20 08:47:47 -05:00
sysfs-tagging.txt	sysfs-tagging.txt: fix pre-kernfs references	2015-09-13 14:38:51 -06:00
sysfs.txt	driver core: remove DRIVER_ATTR	2017-09-19 09:20:33 +02:00
sysv-fs.txt	…
tmpfs.txt	Documenation: update cgroup's document path	2016-08-03 15:43:58 -06:00
ubifs.txt	…
udf.txt	udf: Remove some outdate references from documentation	2017-10-16 11:55:52 +02:00
ufs.txt	…
vfat.txt	fat: add config option to set UTF-8 mount option by default	2016-03-22 15:36:02 -07:00
vfs.txt	Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs	2017-09-13 09:11:44 -07:00
xfs-delayed-logging-design.txt	…
xfs-self-describing-metadata.txt	…
xfs.txt	xfs: deprecate barrier/nobarrier mount option	2016-12-09 16:49:54 +11:00