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path: root/fs/cifs/smb2misc.c
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* CIFS: Respect epoch value from create lease context v2Pavel Shilovsky2013-09-091-2/+4
| | | | | | | that force a client to purge cache pages when a server requests it. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Store lease state itself rather than a mapped oplock valuePavel Shilovsky2013-09-091-19/+11
| | | | | | | and separate smb20_operations struct. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Replace clientCanCache* bools with an integerPavel Shilovsky2013-09-081-3/+3
| | | | | | | 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>
* CIFS: Fix missing lease breakPavel Shilovsky2013-09-081-69/+80
| | | | | | | | | | | If a server sends a lease break to a connection that doesn't have opens with a lease key specified in the server response, we can't find an open file to send an ack. Fix this by walking through all connections we have. Cc: <stable@vger.kernel.org> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Fix a memory leak when a lease break comesPavel Shilovsky2013-09-081-0/+1
| | | | | | | | | | This happens when we receive a lease break from a server, then find an appropriate lease key in opened files and schedule the oplock_break slow work. lw pointer isn't freed in this case. Cc: <stable@vger.kernel.org> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Implement follow_link for SMB2Pavel Shilovsky2013-09-081-0/+4
| | | | | | | | 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>
* SMB2 FSCTL and IOCTL worker functionSteve French2013-06-261-0/+4
| | | | | | | | | | | | | | | | | | | | | | | This worker function is needed to send SMB2 fsctl (and ioctl) requests including: validating negotiation info (secure negotiate) querying the servers network interfaces copy offload (refcopy) Followon patches for the above three will use this. This patch also does general validation of the response. In the future, as David Disseldorp notes, for the copychunk ioctl case, we will want to enhance the response processing to allow returning the chunk request limits to the caller (even though the server returns an error, in that case we would return data that the caller could use - see 2.2.32.1). See MS-SMB2 Section 2.2.31 for more details on format of fsctl. Acked-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
* [CIFS] cifs: Rename cERROR and cFYI to cifs_dbgJoe Perches2013-05-041-48/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Trivial endian fixesSteve French2012-09-241-2/+3
| | | | | | | | Some trivial endian fixes for the SMB2 code. One warning remains which I asked Pavel to look at. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Fix fast lease break after open problemPavel Shilovsky2012-09-241-5/+69
| | | | | | | | | | | | Now we walk though cifsFileInfo's list for every incoming lease break and look for an equivalent there. That approach misses lease breaks that come just after an open response - we don't have time to populate new cifsFileInfo structure to the list. Fix this by adding new list of pending opens and look for a lease there if we didn't find it in the list of cifsFileInfo structures. Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
* CIFS: Add SMB2.1 lease break supportPavel Shilovsky2012-09-241-1/+89
| | | | | Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* CIFS: Add oplock break support for SMB2Pavel Shilovsky2012-09-241-2/+74
| | | | | Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Add readdir support for SMB2Pavel Shilovsky2012-09-241-1/+7
| | | | | Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Add SMB2 support for cifs_iovec_readPavel Shilovsky2012-09-241-0/+3
| | | | | Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Fix log messages in packet checking for SMB2Pavel Shilovsky2012-08-191-7/+9
| | | | | Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Query SMB2 inode infoPavel Shilovsky2012-07-241-1/+6
| | | | | Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Add SMB2 support for is_path_accessiblePavel Shilovsky2012-07-241-0/+25
| | | | | | | that needs for a successful mount through SMB2 protocol. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Add session setup/logoff capability for SMB2Pavel Shilovsky2012-07-241-0/+5
| | | | | Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Add capability to send SMB2 negotiate messagePavel Shilovsky2012-07-241-1/+6
| | | | | | | | | and add negotiate request type to let set_credits know that we are only on negotiate stage and no need to make a decision about disabling echos and oplocks. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
* CIFS: Make demultiplex_thread work with SMB2 codePavel Shilovsky2012-07-241-0/+307
Now we can process SMB2 messages: check message, get message id and wakeup awaiting routines. Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
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