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2012-08-20CIFS: Fix cifs_do_create error hadnlingPavel Shilovsky1-8/+1
Commit d2c127197dfc0b2bae62a52e1e0d3e3ff493919e caused a regression in cifs_do_create error handling. Fix this by closing a file handle in the case of a get_inode_info(_unix) error. Also remove unnecessary checks for newinode being NULL. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-08-20cifs: print error code if smb signature verification failsSteve French2-6/+14
While trying to debug a SMB signature related issue with Windows Servers figured out it might be easier to debug if we print the error code from cifs_verify_signature(). Also, fix indendation while at it. Signed-off-by: Suresh Jayaraman <sjayaraman@suse.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-08-20CIFS: Fix log messages in packet checking for SMB2Pavel Shilovsky2-11/+15
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-08-20CIFS: Protect i_nlink from being negativeSteve French2-8/+18
that can cause warning messages. Pavel had initially suggested a smaller patch around drop_nlink, after a similar problem was discovered NFS. Protecting additional places where nlink is touched was suggested by Jeff Layton and is included in this. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-28CIFS: Add SMB2 support for rmdirPavel Shilovsky3-0/+12
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-28CIFS: Move rmdir code to ops structPavel Shilovsky5-13/+24
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-28CIFS: Add SMB2 support for mkdir operationPavel Shilovsky3-0/+38
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-28CIFS: Separate protocol specific part from mkdirPavel Shilovsky5-25/+49
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-28CIFS: Simplify cifs_mkdir callPavel Shilovsky3-140/+167
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-25cifs: ensure that we always do cifsFileInfo_get under the spinlockJeff Layton2-8/+15
The readpages bug is a regression that was introduced in 6993f74a5. This also fixes a couple of similar bugs in the uncached read and write codepaths. Also, prevent this sort of thing in the future by having cifsFileInfo_get take the spinlock itself, and adding a _locked variant for use in places that are already holding the lock. The _put code has always done that so this makes for a less confusing interface. Cc: <stable@vger.kernel.org> # 3.5.x Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Make CAP_* checks protocol independentPavel Shilovsky11-49/+66
Since both CIFS and SMB2 use ses->capabilities (server->capabilities) field but flags are different we should make such checks protocol independent. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Allow SMB2 statistics to be trackedPavel Shilovsky3-3/+91
Since there are only 19 command codes, it also is easier to track by exact command code than it was for cifs. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move clear/print_stats code to ops structPavel Shilovsky5-103/+129
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add echo request support for SMB2Pavel Shilovsky6-3/+73
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move echo code to osp structPavel Shilovsky3-4/+11
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add SMB2 support for async requestsPavel Shilovsky3-1/+27
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Setup async request in ops structPavel Shilovsky4-2/+8
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add SMB2 support for build_path_to_rootPavel Shilovsky1-0/+18
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move building path to root to ops structPavel Shilovsky6-38/+48
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Query SMB2 inode infoPavel Shilovsky8-2/+417
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move query inode info code to ops structPavel Shilovsky5-70/+107
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add SMB2 support for is_path_accessiblePavel Shilovsky7-0/+423
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>
2012-07-24CIFS: Move is_path_accessible to ops structPavel Shilovsky5-62/+69
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move informational tcon calls to ops structPavel Shilovsky3-27/+34
and rename variables in cifs_mount. Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move getting dfs referalls to ops structPavel Shilovsky5-22/+27
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Process reconnects for SMB2 sharesPavel Shilovsky4-9/+143
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add tree connect/disconnect capability for SMB2Pavel Shilovsky7-5/+230
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add session setup/logoff capability for SMB2Pavel Shilovsky8-3/+284
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add capability to send SMB2 negotiate messagePavel Shilovsky8-11/+417
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>
2012-07-24CIFS: Respect SMB2 header/max header sizePavel Shilovsky2-8/+31
Use SMB2 header size values for allocation and memset because they are bigger and suitable for both CIFS and SMB2. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Make demultiplex_thread work with SMB2 codePavel Shilovsky6-2/+384
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>
2012-07-24CIFS: Fix a wrong pointer in atomic_openPavel Shilovsky1-4/+1
Commit 30d904947459cca2beb69e0110716f5248b31f2a caused a regression in cifs open codepath. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add SMB2 credits supportPavel Shilovsky4-1/+86
For SMB2 protocol we can add more than one credit for one received request: it depends on CreditRequest field in SMB2 response header. Also we divide all requests by type: echoes, oplocks and others. Each type uses its own slot pull. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Make transport routines work with SMB2Pavel Shilovsky9-8/+246
Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Map SMB2 status codes to POSIX errorsSteve French4-1/+2571
Add mapping table for 32 bit SMB2 status codes to linux errors. Note that SMB2 does not use DOS/OS2 errors (ever) so mapping to DOS/OS2 errors as a common network subset (as we do for cifs) doesn't help. And note that the set of status codes is much more complete here. Signed-off-by: Steve French <sfrench@us.ibm.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Add SMB2 status codesPavel Shilovsky1-0/+1782
Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Rename 7 error codes to NT_ stylePavel Shilovsky2-13/+15
and consider such codes as CIFS errors. Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Rename Get/FreeXid and make them work with unsigned intPavel Shilovsky14-352/+375
Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move protocol specific tcon/tdis code to ops structPavel Shilovsky5-35/+56
and rename variables around the code changes. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move protocol specific session setup/logoff code to ops structPavel Shilovsky6-15/+24
Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move protocol specific negotiate code to ops structPavel Shilovsky6-21/+46
Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Extend credit mechanism to process request typePavel Shilovsky5-49/+74
Split all requests to echos, oplocks and others - each group uses its own credit slot. This is indicated by new flags CIFS_ECHO_OP and CIFS_OBREAK_OP that are not used now for CIFS. This change is required to support SMB2 protocol because of different processing of these commands. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24CIFS: Move trans2 processing to ops structPavel Shilovsky3-159/+175
Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24cifs: reinstate sec=ntlmv2 mount optionJeff Layton1-4/+5
sec=ntlmv2 as a mount option got dropped in the mount option overhaul. Cc: Sachin Prabhu <sprabhu@redhat.com> Cc: <stable@vger.kernel.org> # 3.4+ Reported-by: Günter Kukkukk <linux@kukkukk.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24cifs: rename cifs_sign_smb2 to cifs_sign_smbvJeff Layton3-5/+5
"smb2" makes me think of the SMB2.x protocol, which isn't at all what this function is for... Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24cifs: remove bogus reset of smb_buf_length in smb_send routinesJeff Layton1-4/+0
There's a comment here about how we don't want to modify this length, but nothing in this function actually does. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24cifs: move file_lock off stack in cifs_push_posix_locksJeff Layton3-16/+13
struct file_lock is pretty large, so we really don't want that on the stack in a potentially long call chain. Reorganize the arguments to CIFSSMBPosixLock to eliminate the need for that. Eliminate the get_flag and simply use a non-NULL pLockInfo to indicate that this is a "get" operation. In order to do that, need to add a new loff_t argument for the start_offset. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24cifs: remove extraneous newlines from cERROR and cFYI callsJeff Layton8-55/+55
Those macros add a newline on their own, so there's not any need to embed one in the message itself. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-24cifs: after upcalling for krb5 creds, invalidate key rather than revoking itJeff Layton1-1/+1
Calling key_revoke here isn't ideal as further requests for the key will end up returning -EKEYREVOKED until it gets purged from the cache. What we really intend here is to force a new upcall on the next request_key. Cc: David Howells <dhowells@redhat.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2012-07-23Merge branch 'for-linus-2' of ↵Linus Torvalds4-213/+258
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull the big VFS changes from Al Viro: "This one is *big* and changes quite a few things around VFS. What's in there: - the first of two really major architecture changes - death to open intents. The former is finally there; it was very long in making, but with Miklos getting through really hard and messy final push in fs/namei.c, we finally have it. Unlike his variant, this one doesn't introduce struct opendata; what we have instead is ->atomic_open() taking preallocated struct file * and passing everything via its fields. Instead of returning struct file *, it returns -E... on error, 0 on success and 1 in "deal with it yourself" case (e.g. symlink found on server, etc.). See comments before fs/namei.c:atomic_open(). That made a lot of goodies finally possible and quite a few are in that pile: ->lookup(), ->d_revalidate() and ->create() do not get struct nameidata * anymore; ->lookup() and ->d_revalidate() get lookup flags instead, ->create() gets "do we want it exclusive" flag. With the introduction of new helper (kern_path_locked()) we are rid of all struct nameidata instances outside of fs/namei.c; it's still visible in namei.h, but not for long. Come the next cycle, declaration will move either to fs/internal.h or to fs/namei.c itself. [me, miklos, hch] - The second major change: behaviour of final fput(). Now we have __fput() done without any locks held by caller *and* not from deep in call stack. That obviously lifts a lot of constraints on the locking in there. Moreover, it's legal now to call fput() from atomic contexts (which has immediately simplified life for aio.c). We also don't need anti-recursion logics in __scm_destroy() anymore. There is a price, though - the damn thing has become partially asynchronous. For fput() from normal process we are guaranteed that pending __fput() will be done before the caller returns to userland, exits or gets stopped for ptrace. For kernel threads and atomic contexts it's done via schedule_work(), so theoretically we might need a way to make sure it's finished; so far only one such place had been found, but there might be more. There's flush_delayed_fput() (do all pending __fput()) and there's __fput_sync() (fput() analog doing __fput() immediately). I hope we won't need them often; see warnings in fs/file_table.c for details. [me, based on task_work series from Oleg merged last cycle] - sync series from Jan - large part of "death to sync_supers()" work from Artem; the only bits missing here are exofs and ext4 ones. As far as I understand, those are going via the exofs and ext4 trees resp.; once they are in, we can put ->write_super() to the rest, along with the thread calling it. - preparatory bits from unionmount series (from dhowells). - assorted cleanups and fixes all over the place, as usual. This is not the last pile for this cycle; there's at least jlayton's ESTALE work and fsfreeze series (the latter - in dire need of fixes, so I'm not sure it'll make the cut this cycle). I'll probably throw symlink/hardlink restrictions stuff from Kees into the next pile, too. Plus there's a lot of misc patches I hadn't thrown into that one - it's large enough as it is..." * 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (127 commits) ext4: switch EXT4_IOC_RESIZE_FS to mnt_want_write_file() btrfs: switch btrfs_ioctl_balance() to mnt_want_write_file() switch dentry_open() to struct path, make it grab references itself spufs: shift dget/mntget towards dentry_open() zoran: don't bother with struct file * in zoran_map ecryptfs: don't reinvent the wheels, please - use struct completion don't expose I_NEW inodes via dentry->d_inode tidy up namei.c a bit unobfuscate follow_up() a bit ext3: pass custom EOF to generic_file_llseek_size() ext4: use core vfs llseek code for dir seeks vfs: allow custom EOF in generic_file_llseek code vfs: Avoid unnecessary WB_SYNC_NONE writeback during sys_sync and reorder sync passes vfs: Remove unnecessary flushing of block devices vfs: Make sys_sync writeout also block device inodes vfs: Create function for iterating over block devices vfs: Reorder operations during sys_sync quota: Move quota syncing to ->sync_fs method quota: Split dquot_quota_sync() to writeback and cache flushing part vfs: Move noop_backing_dev_info check from sync into writeback ...
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