kernel/git/stable/linux.git/fs/cifs/fs_context.h, branch master

smb: move client and server files to common directory fs/smb

2023-05-24T21:29:21+00:00

Move CIFS/SMB3 related client and server files (cifs.ko and ksmbd.ko and helper modules) to new fs/smb subdirectory: fs/cifs --> fs/smb/client fs/ksmbd --> fs/smb/server fs/smbfs_common --> fs/smb/common Suggested-by: Linus Torvalds Acked-by: Namjae Jeon Signed-off-by: Steve French

cifs: sanitize paths in cifs_update_super_prepath.

2023-04-05T17:32:19+00:00

After a server reboot, clients are failing to move files with ENOENT. This is caused by DFS referrals containing multiple separators, which the server move call doesn't recognize. v1: Initial patch. v2: Move prototype to header. Link: https://bugzilla.redhat.com/show_bug.cgi?id=2182472 Fixes: a31080899d5f ("cifs: sanitize multiple delimiters in prepath") Actually-Fixes: 24e0a1eff9e2 ("cifs: switch to new mount api") Reviewed-by: Paulo Alcantara (SUSE) Signed-off-by: Thiago Rafael Becker Signed-off-by: Steve French

smb3: lower default deferred close timeout to address perf regression

2023-03-24T19:37:12+00:00

Performance tests with large number of threads noted that the change of the default closetimeo (deferred close timeout between when close is done by application and when client has to send the close to the server), to 5 seconds from 1 second, significantly degraded perf in some cases like this (in the filebench example reported, the stats show close requests on the wire taking twice as long, and 50% regression in filebench perf). This is stil configurable via mount parm closetimeo, but to be safe, decrease default back to its previous value of 1 second. Reported-by: Yin Fengwei Reported-by: kernel test robot Link: https://lore.kernel.org/lkml/997614df-10d4-af53-9571-edec36b0e2f3@intel.com/ Fixes: 5efdd9122eff ("smb3: allow deferred close timeout to be configurable") Cc: stable@vger.kernel.org # 6.0+ Tested-by: Yin Fengwei Reviewed-by: Paulo Alcantara (SUSE) Reviewed-by: Shyam Prasad N Signed-off-by: Steve French

cifs: set DFS root session in cifs_get_smb_ses()

2023-03-15T02:05:53+00:00

Set the DFS root session pointer earlier when creating a new SMB session to prevent racing with smb2_reconnect(), cifs_reconnect_tcon() and DFS cache refresher. Signed-off-by: Paulo Alcantara (SUSE) Cc: stable@vger.kernel.org # 6.2 Signed-off-by: Steve French

cifs: share dfs connections and supers

2022-12-19T14:03:12+00:00

When matching DFS superblocks we can't rely on either the server's address or tcon's UNC name from mount(2) as the existing servers and tcons might be connected to somewhere else. Instead, check if superblock is dfs, and if so, match its original source pathname with the new mount's source pathname. For DFS connections, instead of checking server's address, match its referral path as it could be connected to different targets. Signed-off-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French

cifs: remove unused smb3_fs_context::mount_options

2022-12-19T14:03:11+00:00

Just remove it as it's no longer used during mount. Signed-off-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French

smb3: allow deferred close timeout to be configurable

2022-08-12T01:03:04+00:00

Deferred close can be a very useful feature for allowing caching data for read, and for minimizing the number of reopens needed for a file that is repeatedly opened and close but there are workloads where its default (1 second, similar to actimeo/acregmax) is much too small. Allow the user to configure the amount of time we can defer sending the final smb3 close when we have a handle lease on the file (rather than forcing it to depend on value of actimeo which is often unrelated, and less safe). Adds new mount parameter "closetimeo=" which is the maximum number of seconds we can wait before sending an SMB3 close when we have a handle lease for it. Default value also is set to slightly larger at 5 seconds (although some other clients use larger default this should still help). Suggested-by: Bharath SM Reviewed-by: Bharath SM Reviewed-by: Shyam Prasad N Reviewed-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French

cifs: fix ntlmssp on old servers

2022-05-25T12:41:22+00:00

Some older servers seem to require the workstation name during ntlmssp to be at most 15 chars (RFC1001 name length), so truncate it before sending when using insecure dialects. Link: https://lore.kernel.org/r/e6837098-15d9-acb6-7e34-1923cf8c6fe1@winds.org Reported-by: Byron Stanoszek Tested-by: Byron Stanoszek Fixes: 49bd49f983b5 ("cifs: send workstation name during ntlmssp session setup") Cc: stable@vger.kernel.org Signed-off-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French

smb3: add mount parm nosparse

2022-05-24T04:32:54+00:00

To reduce risk of applications breaking that mount to servers with only partial sparse file support, add optional mount parm "nosparse" which disables setting files sparse (and thus will return EOPNOTSUPP on certain fallocate operations). Acked-by: Ronnie Sahlberg Signed-off-by: Steve French

cifs: send workstation name during ntlmssp session setup

2021-11-08T19:07:56+00:00

During the ntlmssp session setup (authenticate phases) send the client workstation info. This can make debugging easier on servers. Signed-off-by: Shyam Prasad N Reviewed-by: Paulo Alcantara (SUSE) Reviewed-by: Enzo Matsumiya Signed-off-by: Steve French