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0667059d0b
linux/fs/cifs
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Murphy Zhou 0667059d0b cifs: allow unlock flock and OFD lock across fork 
Since commit d0677992d2 ("cifs: add support for flock") added
support for flock, LTP/flock03[1] testcase started to fail.

This testcase is testing flock lock and unlock across fork.
The parent locks file and starts the child process, in which
it unlock the same fd and lock the same file with another fd
again. All the lock and unlock operation should succeed.

Now the child process does not actually unlock the file, so
the following lock fails. Fix this by allowing flock and OFD
lock go through the unlock routine, not skipping if the unlock
request comes from another process.

Patch has been tested by LTP/xfstests on samba and Windows
server, v3.11, with or without cache=none mount option.

[1] https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/flock/flock03.c
Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
2020-03-22 22:49:09 -05:00
..
asn1.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cache.c cifs: use 64-bit timestamps for fscache 2018-08-07 14:15:41 -05:00
cifs_debug.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
cifs_debug.h cifs: add a debug macro that prints \\server\share for errors 2019-09-16 11:43:38 -05:00
cifs_dfs_ref.c cifs: fix potential mismatch of UNC paths 2020-02-24 14:20:38 -06:00
cifs_fs_sb.h smb3: add mount option to allow RW caching of share accessed by only 1 client 2019-09-16 11:43:38 -05:00
cifs_ioctl.h cifs: add SMB3 change notification support 2020-02-06 09:14:28 -06:00
cifs_spnego.c cifs: switch servers depending on binding state 2019-11-25 01:16:30 -06:00
cifs_spnego.h [CIFS] Rename three structures to avoid camel case 2011-05-27 04:34:02 +00:00
cifs_unicode.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifs_unicode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifs_uniupr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifsacl.c cifs: Fix mode output in debugging statements 2020-02-12 22:24:26 -06:00
cifsacl.h smb3: fix mode passed in on create for modetosid mount option 2019-12-06 14:15:52 -06:00
cifsencrypt.c fs: cifs: switch to RC4 library interface 2019-06-20 14:19:55 +08:00
cifsfs.c cifs: do d_move in rename 2020-03-22 22:49:09 -05:00
cifsfs.h cifs: update internal module version number 2020-01-31 15:13:22 -06:00
cifsglob.h cifs: fix rename() by ensuring source handle opened with DELETE bit 2020-02-24 14:20:38 -06:00
cifspdu.h cifs: add smb2 POSIX info level 2020-03-22 22:49:09 -05:00
cifsproto.h cifs: handle prefix paths in reconnect 2020-03-22 22:49:09 -05:00
cifsroot.c cifs: cifsroot: add more err checking 2019-09-16 11:43:39 -05:00
cifssmb.c cifs: make use of cap_unix(ses) in cifs_reconnect_tcon() 2020-03-22 22:49:09 -05:00
connect.c cifs: print warning mounting with vers=1.0 2020-03-22 22:49:09 -05:00
dfs_cache.c cifs: handle prefix paths in reconnect 2020-03-22 22:49:09 -05:00
dfs_cache.h cifs: handle prefix paths in reconnect 2020-03-22 22:49:09 -05:00
dir.c cifs_atomic_open(): fix double-put on late allocation failure 2020-03-12 18:25:20 -04:00
dns_resolve.c keys: Pass the network namespace into request_key mechanism 2019-06-27 23:02:12 +01:00
dns_resolve.h
export.c docs: fs: convert docs without extension to ReST 2019-07-31 13:31:05 -06:00
file.c locks: reinstate locks_delete_block optimization 2020-03-18 13:03:38 -07:00
fscache.c cifs: use 64-bit timestamps for fscache 2018-08-07 14:15:41 -05:00
fscache.h cifs: use 64-bit timestamps for fscache 2018-08-07 14:15:41 -05:00
inode.c cifs: do d_move in rename 2020-03-22 22:49:09 -05:00
ioctl.c cifs: add SMB3 change notification support 2020-02-06 09:14:28 -06:00
Kconfig various cifs/smb3 fixes (including for share deleted cases) and features including improved encrypted read performance, and various debugging improvements 2019-09-19 10:32:16 -07:00
link.c cifs: add SMB2_open() arg to return POSIX data 2020-03-22 22:49:09 -05:00
Makefile cifs: Add support for root file systems 2019-09-16 11:43:38 -05:00
misc.c cifs: handle prefix paths in reconnect 2020-03-22 22:49:09 -05:00
netmisc.c fs: cifs: mute -Wunused-const-variable message 2019-10-06 22:04:35 -05:00
nterr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
nterr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
ntlmssp.h cifs: dynamic allocation of ntlmssp blob 2016-06-23 23:45:07 -05:00
readdir.c cifs: plumb smb2 POSIX dir enumeration 2020-03-22 22:49:09 -05:00
rfc1002pdu.h
sess.c cifs: make multichannel warning more visible 2020-02-06 09:12:16 -06:00
smb1ops.c cifs: fix rename() by ensuring source handle opened with DELETE bit 2020-02-24 14:20:38 -06:00
smb2file.c cifs: allow unlock flock and OFD lock across fork 2020-03-22 22:49:09 -05:00
smb2glob.h cifs: change SMB2_OP_RENAME and SMB2_OP_HARDLINK to use compounding 2018-10-23 21:16:04 -05:00
smb2inode.c cifs: fix rename() by ensuring source handle opened with DELETE bit 2020-02-24 14:20:38 -06:00
smb2maperror.c smb3: improve handling of share deleted (and share recreated) 2019-09-16 11:43:38 -05:00
smb2misc.c cifs: Fix memory allocation in __smb2_handle_cancelled_cmd() 2020-01-26 19:24:17 -06:00
smb2ops.c cifs: add SMB2_open() arg to return POSIX data 2020-03-22 22:49:09 -05:00
smb2pdu.c cifs: add SMB2_open() arg to return POSIX data 2020-03-22 22:49:09 -05:00
smb2pdu.h cifs: add SMB2_open() arg to return POSIX data 2020-03-22 22:49:09 -05:00
smb2proto.h cifs: add SMB2_open() arg to return POSIX data 2020-03-22 22:49:09 -05:00
smb2status.h cifs: don't use __constant_cpu_to_le32() 2019-05-07 23:24:54 -05:00
smb2transport.c cifs: fix channel signing 2020-02-06 12:42:36 -06:00
smbdirect.c cifs: smbd: Only queue work for error recovery on memory registration 2019-11-25 01:16:30 -06:00
smbdirect.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
smbencrypt.c fs: cifs: move from the crypto cipher API to the new DES library interface 2019-08-22 14:57:34 +10:00
smberr.h
smbfsctl.h smb3: Add missing reparse tags 2019-09-24 23:31:32 -05:00
trace.c smb3: Cleanup license mess 2019-01-24 09:37:33 -06:00
trace.h cifs: Add tracepoints for errors on flush or fsync 2020-02-05 18:24:19 -06:00
transport.c CIFS: Fix task struct use-after-free on reconnect 2020-01-26 19:24:17 -06:00
winucase.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
xattr.c CIFS: Add support for setting owner info, dos attributes, and create time 2020-01-26 19:24:17 -06:00