Steve French cdeaf9d04a smb3: allow previous versions to be mounted with snapshot= mount parm ... mounting with the "snapshots=" mount parm allows a read-only view of a previous version of a file system (see MS-SMB2 and "timewarp" tokens, section 2.2.13.2.6) based on the timestamp passed in on the snapshots mount parm. Add processing to optionally send this create context. Example output: /mnt1 is mounted with "snapshots=..." and will see an earlier version of the directory, with three fewer files than /mnt2 the current version of the directory. root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# cat /proc/mounts | grep cifs //172.22.149.186/public /mnt1 cifs ro,relatime,vers=default,cache=strict,username=smfrench,uid=0,noforceuid,gid=0,noforcegid,addr=172.22.149.186,file_mode=0755,dir_mode=0755,soft,nounix,mapposix,rsize=1048576,wsize=1048576,echo_interval=60,snapshot=131748608570000000,actimeo=1 //172.22.149.186/public /mnt2 cifs rw,relatime,vers=default,cache=strict,username=smfrench,uid=0,noforceuid,gid=0,noforcegid,addr=172.22.149.186,file_mode=0755,dir_mode=0755,soft,nounix,mapposix,rsize=1048576,wsize=1048576,echo_interval=60,actimeo=1 root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# ls /mnt1 EmptyDir newerdir root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# ls /mnt1/newerdir root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# ls /mnt2 EmptyDir file newerdir newestdir timestamp-trace.cap root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# ls /mnt2/newerdir new-file-not-in-snapshot Snapshots are extremely useful for comparing previous versions of files or directories, and recovering from data corruptions or mistakes. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>		2018-08-10 11:54:08 -05:00
..
9p	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
adfs	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
affs	affs: fix potential memory leak when parsing option 'prefix'	2018-05-28 12:36:41 +02:00
afs	Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-06-16 16:32:04 +09:00
autofs	autofs: fix slab out of bounds read in getname_kernel()	2018-07-14 11:11:09 -07:00
befs	fix a series of Documentation/ broken file name references	2018-06-15 18:10:01 -03:00
bfs	bfs_add_entry: pass name/len as qstr pointer	2018-05-22 14:27:50 -04:00
btrfs	for-4.18-rc5-tag	2018-07-21 16:42:03 -07:00
cachefiles	cachefiles: Wait rather than BUG'ing on "Unexpected object collision"	2018-07-25 14:49:00 +01:00
ceph	ceph: fix dentry leak in splice_dentry()	2018-06-26 18:42:44 +02:00
cifs	smb3: allow previous versions to be mounted with snapshot= mount parm	2018-08-10 11:54:08 -05:00
coda	vfs: change inode times to use struct timespec64	2018-06-05 16:57:31 -07:00
configfs	vfs: change inode times to use struct timespec64	2018-06-05 16:57:31 -07:00
cramfs	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
crypto	f2fs-for-4.18-rc1	2018-06-11 10:16:13 -07:00
debugfs	Revert "debugfs: inode: debugfs_create_dir uses mode permission from parent"	2018-06-12 20:52:16 -07:00
devpts
dlm	treewide: Use array_size() in vmalloc()	2018-06-12 16:19:22 -07:00
ecryptfs	Merge branch 'fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs into aio-base	2018-05-26 09:16:25 +02:00
efivarfs
efs
exofs	exofs: avoid VLA in structures	2018-06-15 07:55:24 +09:00
exportfs	ovl: do not try to reconnect a disconnected origin dentry	2018-04-12 12:04:49 +02:00
ext2	ext2: add warning when specifying nocheck option	2018-06-20 11:04:26 +02:00
ext4	ext4: fix check to prevent initializing reserved inodes	2018-07-29 15:34:00 -04:00
f2fs	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
fat	fat: fix memory allocation failure handling of match_strdup()	2018-07-21 12:50:46 -07:00
freevxfs	freevxfs_lookup(): use d_splice_alias()	2018-05-22 14:27:51 -04:00
fscache	fscache: Fix reference overput in fscache_attach_object() error handling	2018-07-25 14:49:00 +01:00
fuse	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
gfs2	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
hfs	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
hfsplus	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
hostfs	vfs: change inode times to use struct timespec64	2018-06-05 16:57:31 -07:00
hpfs	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
hugetlbfs	mm: use vma_init() to initialize VMAs on stack and data segments	2018-07-26 19:38:03 -07:00
isofs	isofs: fix potential memory leak in mount option parsing	2018-04-16 09:47:41 +02:00
jbd2	Bug fixes for ext4; most of which relate to vulnerabilities where a	2018-07-08 11:10:30 -07:00
jffs2	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
jfs	jfs: Fix usercopy whitelist for inline inode data	2018-08-04 07:53:46 -07:00
kernfs	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
lockd	net: Drop pernet_operations::async	2018-03-27 13:18:09 -04:00
minix	minix_lookup: use d_splice_alias()	2018-05-22 14:27:52 -04:00
nfs	NFSv4: Fix _nfs4_do_setlk()	2018-08-01 23:17:06 -04:00
nfs_common	net: Drop pernet_operations::async	2018-03-27 13:18:09 -04:00
nfsd	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
nilfs2	do d_instantiate/unlock_new_inode combinations safely	2018-05-11 15:36:37 -04:00
nls
notify	fsnotify: add fsnotify_add_inode_mark() wrappers	2018-05-18 14:58:22 +02:00
ntfs	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
ocfs2	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
omfs	omfs_lookup(): report IO errors, use d_splice_alias()	2018-05-22 14:27:58 -04:00
openpromfs	openpromfs: switch to d_splice_alias()	2018-05-22 14:27:57 -04:00
orangefs	Solve a series of broken links for files under Documentation:	2018-06-17 05:25:18 +09:00
overlayfs	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
proc	fs/proc/task_mmu.c: fix Locked field in /proc/pid/smaps*	2018-07-14 11:11:09 -07:00
pstore	pstore: Remove bogus format string definition	2018-06-14 14:57:24 +02:00
qnx4	qnx4_lookup: use d_splice_alias()	2018-05-22 14:27:52 -04:00
qnx6	qnx6_lookup: switch to d_splice_alias()	2018-05-22 14:27:54 -04:00
quota	quota: Cleanup list iteration in dqcache_shrink_scan()	2018-06-20 11:04:26 +02:00
ramfs
reiserfs	reiserfs: fix buffer overflow with long warning messages	2018-07-14 11:11:10 -07:00
romfs	romfs_lookup: switch to d_splice_alias()	2018-05-22 14:27:55 -04:00
squashfs	Squashfs: Compute expected length from inode size rather than block length	2018-08-02 09:34:02 -07:00
sysfs	unfuck sysfs_mount()	2018-05-21 14:30:09 -04:00
sysv	sysv_lookup: use d_splice_alias()	2018-05-22 14:27:53 -04:00
tracefs
ubifs	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
udf	udf: Drop unused arguments of udf_delete_aext()	2018-06-20 11:05:49 +02:00
ufs	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
xfs	xfs: properly handle free inodes in extent hint validators	2018-07-24 11:34:52 -07:00
aio.c	Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-07-22 12:04:51 -07:00
anon_inodes.c
attr.c	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
bad_inode.c	vfs: change inode times to use struct timespec64	2018-06-05 16:57:31 -07:00
binfmt_aout.c	exec: introduce finalize_exec() before start_thread()	2018-04-11 10:28:37 -07:00
binfmt_elf_fdpic.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
binfmt_elf.c	fs, elf: make sure to page align bss in load_elf_library	2018-07-14 11:11:10 -07:00
binfmt_em86.c
binfmt_flat.c	exec: introduce finalize_exec() before start_thread()	2018-04-11 10:28:37 -07:00
binfmt_misc.c	docs: Fix more broken references	2018-06-15 18:11:26 -03:00
binfmt_script.c
block_dev.c	for-linus-20180727	2018-07-27 12:51:00 -07:00
buffer.c	fs: move page_cache_seek_hole_data to iomap.c	2018-06-01 18:37:33 -07:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c	autofs: clean up includes	2018-06-07 17:34:40 -07:00
compat.c	ncpfs: remove compat functionality	2018-06-05 19:23:26 +02:00
coredump.c
d_path.c	split d_path() and friends into a separate file	2018-03-29 15:07:46 -04:00
dax.c	libnvdimm for 4.18	2018-06-08 17:21:52 -07:00
dcache.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-06-04 10:14:28 -07:00
dcookies.c	fs: add do_lookup_dcookie() helper; remove in-kernel call to syscall	2018-04-02 20:15:39 +02:00
direct-io.c	block: consistently use GFP_NOIO instead of __GFP_NORECLAIM	2018-05-14 08:55:18 -06:00
drop_caches.c
eventfd.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00
eventpoll.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00
exec.c	mm: fix vma_is_anonymous() false-positives	2018-07-26 19:38:03 -07:00
fcntl.c	mm: restructure memfd code	2018-06-07 17:34:35 -07:00
fhandle.c
file_table.c
file.c	fs: add ksys_close() wrapper; remove in-kernel calls to sys_close()	2018-04-02 20:16:00 +02:00
filesystems.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
fs_pin.c
fs_struct.c
fs-writeback.c	bdi: Fix oops in wb_workfn()	2018-05-03 16:11:37 -06:00
inode.c	Fix up non-directory creation in SGID directories	2018-07-05 12:36:36 -07:00
internal.h	drm_mode_create_lease_ioctl(): fix open-coded filp_clone_open()	2018-07-10 23:29:03 -04:00
ioctl.c	fs: Allow CAP_SYS_ADMIN in s_user_ns to freeze and thaw filesystems	2018-05-24 12:04:28 -05:00
iomap.c	fs: fix iomap_bmap position calculation	2018-08-02 13:09:27 -07:00
Kconfig	autofs: remove left-over autofs4 stubs	2018-06-11 08:22:34 -07:00
Kconfig.binfmt	docs: Fix more broken references	2018-06-15 18:11:26 -03:00
libfs.c	fs, dax: prepare for dax-specific address_space_operations	2018-03-30 11:34:55 -07:00
locks.c	vfs/y2038: inode timestamps conversion to timespec64	2018-06-15 07:31:07 +09:00
Makefile	autofs: remove left-over autofs4 stubs	2018-06-11 08:22:34 -07:00
mbcache.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
mount.h
mpage.c
namei.c	Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-06-16 16:32:04 +09:00
namespace.c	fs: Allow superblock owner to access do_remount_sb()	2018-05-24 12:02:25 -05:00
no-block.c
nsfs.c
open.c	Revert "fs: fold open_check_o_direct into do_dentry_open"	2018-06-03 10:58:23 -07:00
pipe.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
readdir.c	fs: add ksys_getdents64() helper; remove in-kernel calls to sys_getdents64()	2018-04-02 20:16:02 +02:00
select.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00
seq_file.c	proc: fix smaps and meminfo alignment	2018-05-25 18:12:11 -07:00
signalfd.c	Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-06-16 16:21:50 +09:00
splice.c	Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-06-16 16:21:50 +09:00
stack.c
stat.c	fs: add do_readlinkat() helper; remove internal call to sys_readlinkat()	2018-04-02 20:15:34 +02:00
statfs.c
super.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-06-04 10:14:28 -07:00
sync.c	Changes for this release:	2018-04-04 12:44:02 -07:00
timerfd.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00
userfaultfd.c	userfaultfd: remove uffd flags from vma->vm_flags if UFFD_EVENT_FORK fails	2018-08-02 16:03:40 -07:00
utimes.c	fs: add do_compat_futimesat() helper; remove in-kernel call to compat syscall	2018-04-02 20:15:44 +02:00
xattr.c	vfs: delete unnecessary assignment in vfs_listxattr	2018-05-29 13:22:41 -04:00