linux-stable.git/fs/cifs, branch v4.2

cifs: Unset CIFS_MOUNT_POSIX_PATHS flag when following dfs mounts

2015-06-29T19:50:22+00:00

In a dfs setup where the client transitions from a server which supports
posix paths to a server which doesn't support posix paths, the flag
CIFS_MOUNT_POSIX_PATHS is not reset. This leads to the wrong directory
separator being used causing smb commands to fail.

Consider the following case where a dfs share on a samba server points
to a share on windows smb server.
 # mount -t cifs -o .. //vm140-31/dfsroot/testwin/
 # ls -l /mnt; touch /mnt/a
 total 0
 touch: cannot touch ‘/mnt/a’: No such file or directory

Signed-off-by: Sachin Prabhu 
Acked-by: Jeff Layton 
Signed-off-by: Steve French

Update negotiate protocol for SMB3.11 dialect

2015-06-29T02:15:48+00:00

Send negotiate contexts when SMB3.11 dialect is negotiated
(ie the preauth and the encryption contexts) and
Initialize SMB3.11 preauth negotiate context salt to random bytes

Followon patch will update session setup and tree connect

Signed-off-by: Steve French

Add ioctl to set integrity

2015-06-29T02:15:45+00:00

set integrity increases reliability of files stored on SMB3 servers.
Add ioctl to allow setting this on files on SMB3 and later mounts.

Signed-off-by: Steve French

Add Get/Set Integrity Information structure definitions

2015-06-29T02:15:41+00:00

Signed-off-by: Steve French

Add reflink copy over SMB3.11 with new FSCTL_DUPLICATE_EXTENTS

2015-06-29T02:15:38+00:00

 Getting fantastic copy performance with cp --reflink over SMB3.11
 using the new FSCTL_DUPLICATE_EXTENTS.

 This FSCTL was added in the SMB3.11 dialect (testing was
 against REFS file system) so have put it as a 3.11 protocol
 specific operation ("vers=3.1.1" on the mount).  Tested at
 the SMB3 plugfest in Redmond.

 It depends on the new FS Attribute (BLOCK_REFCOUNTING) which
 is used to advertise support for the ability to do this ioctl
 (if you can support multiple files pointing to the same block
 than this refcounting ability or equivalent is needed to
 support the new reflink-like duplicate extent SMB3 ioctl.

Signed-off-by: Steve French

Add SMB3.11 mount option synonym for new dialect

2015-06-28T03:28:11+00:00

Most people think of SMB 3.1.1 as SMB version 3.11 so add synonym
for "vers=3.1.1" of "vers=3.11" on mount.

Also make sure that unlike SMB3.0 and 3.02 we don't send
validate negotiate on mount (it is handled by negotiate contexts) -
add list of SMB3.11 specific functions (distinct from 3.0 dialect).

Signed-off-by: Steve French w

add struct FILE_STANDARD_INFO

2015-06-28T03:25:56+00:00

Signed-off-by: Gregor Beck 
Reviewed-by: Jeff Layton

Make dialect negotiation warning message easier to read

2015-06-28T03:28:49+00:00

Dialect version and minor version are easier to read in hex

Signed-off-by: Steve French

Add defines and structs for smb3.1 dialect

2015-06-28T03:23:59+00:00

Add new structures and defines for SMB3.11 negotiate, session setup and tcon

See MS-SMB2-diff.pdf section 2.2.3 for additional protocol documentation.

Reviewed-by: Jeff Layton 
Signed-off-by: Steve French

Allow parsing vers=3.11 on cifs mount

2015-06-28T03:23:32+00:00

Parses and recognizes "vers=3.1.1" on cifs mount and allows sending
0x0311 as a new CIFS/SMB3 dialect. Subsequent patches will add
the new negotiate contexts and updated session setup

Reviewed-by: Jeff Layton 
Signed-off-by: Steve French