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path: root/fs/cifs/smb2file.c
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2018-01-26CIFS: use tcon_ipc instead of use_ipc parameter of SMB2_ioctlAurelien Aptel1-1/+1
Since IPC now has a tcon object, the caller can just pass it. This allows domain-based DFS requests to work with smb2+. Link: https://bugzilla.samba.org/show_bug.cgi?id=12917 Fixes: 9d49640a21bf ("CIFS: implement get_dfs_refer for SMB2+") Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2017-03-01CIFS: add use_ipc flag to SMB2_ioctl()Aurelien Aptel1-1/+2
when set, use the session IPC tree id instead of the tid in the provided tcon. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <smfrench@gmail.com>
2016-12-05CIFS: Fix a possible memory corruption in push locksPavel Shilovsky1-1/+1
If maxBuf is not 0 but less than a size of SMB2 lock structure we can end up with a memory corruption. Cc: Stable <stable@vger.kernel.org> Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
2015-11-03Add resilienthandles mount parmSteve French1-0/+19
Since many servers (Windows clients, and non-clustered servers) do not support persistent handles but do support resilient handles, allow the user to specify a mount option "resilienthandles" in order to get more reliable connections and less chance of data loss (at least when SMB2.1 or later). Default resilient handle timeout (120 seconds to recent Windows server) is used. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <steve.french@primarydata.com>
2015-04-15VFS: normal filesystems (and lustre): d_inode() annotationsDavid Howells1-2/+2
that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-10fs/cifs/smb2file.c: replace count*size kzalloc by kcallocFabian Frederick1-2/+2
kcalloc manages count*sizeof overflow. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Steve French <sfrench@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-25CIFS: Fix wrong filename length for SMB2Pavel Shilovsky1-1/+1
The existing code uses the old MAX_NAME constant. This causes XFS test generic/013 to fail. Fix it by replacing MAX_NAME with PATH_MAX that SMB1 uses. Also remove an unused MAX_NAME constant definition. Cc: <stable@vger.kernel.org> # v3.7+ Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2013-09-09CIFS: Store lease state itself rather than a mapped oplock valuePavel Shilovsky1-23/+0
and separate smb20_operations struct. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2013-09-08CIFS: Replace clientCanCache* bools with an integerPavel Shilovsky1-10/+10
that prepare the code to handle different types of SMB2 leases. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2013-09-08CIFS: Implement follow_link for SMB2Pavel Shilovsky1-1/+1
that allows to access files through symlink created on a server. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2013-07-10CIFS: Reconnect durable handles for SMB2Pavel Shilovsky1-1/+2
On reconnects, we need to reopen file and then obtain all byte-range locks held by the client. SMB2 protocol provides feature to make this process atomic by reconnecting to the same file handle with all it's byte-range locks. This patch adds this capability for SMB2 shares. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steven French <steven@steven-GA-970A-DS3.(none)>
2013-07-10CIFS: Make SMB2_open use cifs_open_parms structPavel Shilovsky1-4/+1
to prepare it for further durable handle reconnect processing. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steven French <steven@steven-GA-970A-DS3.(none)>
2013-07-10CIFS: Introduce cifs_open_parms structPavel Shilovsky1-11/+11
and pass it to the open() call. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steven French <steven@steven-GA-970A-DS3.(none)>
2013-07-10CIFS: Request durable open for SMB2 opensPavel Shilovsky1-1/+1
by passing durable context together with a handle caching lease or batch oplock. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steven French <steven@steven-GA-970A-DS3.(none)>
2013-07-10CIFS: Respect create_options in smb2_open_filePavel Shilovsky1-1/+1
and eliminated unused file_attribute parms of SMB2_open. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steven French <steven@steven-GA-970A-DS3.(none)>
2013-05-04[CIFS] cifs: Rename cERROR and cFYI to cifs_dbgJoe Perches1-4/+4
It's not obvious from reading the macro names that these macros are for debugging. Convert the names to a single more typical kernel style cifs_dbg macro. cERROR(1, ...) -> cifs_dbg(VFS, ...) cFYI(1, ...) -> cifs_dbg(FYI, ...) cFYI(DBG2, ...) -> cifs_dbg(NOISY, ...) Move the terminating format newline from the macro to the call site. Add CONFIG_CIFS_DEBUG function cifs_vfs_err to emit the "CIFS VFS: " prefix for VFS messages. Size is reduced ~ 1% when CONFIG_CIFS_DEBUG is set (default y) $ size fs/cifs/cifs.ko* text data bss dec hex filename 265245 2525 132 267902 4167e fs/cifs/cifs.ko.new 268359 2525 132 271016 422a8 fs/cifs/cifs.ko.old Other miscellaneous changes around these conversions: o Miscellaneous typo fixes o Add terminating \n's to almost all formats and remove them from the macros to be more kernel style like. A few formats previously had defective \n's o Remove unnecessary OOM messages as kmalloc() calls dump_stack o Coalesce formats to make grep easier, added missing spaces when coalescing formats o Use %s, __func__ instead of embedded function name o Removed unnecessary "cifs: " prefixes o Convert kzalloc with multiply to kcalloc o Remove unused cifswarn macro Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-12-05CIFS: Separate pushing mandatory locks and lock_sem handlingPavel Shilovsky1-12/+0
Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-24CIFS: Add SMB2.1 lease break supportPavel Shilovsky1-0/+2
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-09-24CIFS: Request SMB2.1 leasesPavel Shilovsky1-2/+7
if server supports them and we need oplocks. Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-09-24CIFS: Turn lock mutex into rw semaphorePavel Shilovsky1-7/+8
and allow several processes to walk through the lock list and read can_cache_brlcks value if they are not going to modify them. Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-09-24CIFS: Use brlock cache for SMB2Pavel Shilovsky1-0/+91
Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-09-24CIFS: Add brlock support for SMB2Pavel Shilovsky1-0/+97
Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru>
2012-09-24CIFS: Process oplocks for SMB2Pavel Shilovsky1-2/+22
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-09-24CIFS: Add open/close file support for SMB2Pavel Shilovsky1-0/+86
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
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