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* cifs: add refcounted and timestamped container for holding tconsJeff Layton2010-10-069-148/+376
| | | | | | | | | | | | Eventually, we'll need to track the use of tcons on a per-sb basis, so that we know when it's ok to tear them down. Begin this conversion by adding a new "tcon_link" struct and accessors that get it. For now, the core data structures are untouched -- cifs_sb still just points to a single tcon and the pointers are just cast to deal with the accessor functions. A later patch will flesh this out. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: fix handling of signing with writepages (try #6)Jeff Layton2010-09-291-31/+37
| | | | | | | | | | | | | | | | | | Get a reference to the file early so we can eventually base the decision about signing on the correct tcon. If that doesn't work for some reason, then fall back to generic_writepages. That's just as likely to fail, but it simplifies the error handling. In truth, I'm not sure how that could occur anyway, so maybe a NULL open_file here ought to be a BUG()? After that, we drop the reference to the open_file and then we re-get one prior to each WriteAndX call. This helps ensure that the filehandle isn't held open any longer than necessary and that open files are reclaimed prior to each write call. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: have cifs_new_fileinfo take a tcon argJeff Layton2010-09-293-14/+16
| | | | | | | | To minimize calls to cifs_sb_tcon and to allow for a clear error path if a tcon can't be acquired. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: add cifs_sb_master_tcon and convert some callers to use itJeff Layton2010-09-298-32/+42
| | | | | | | | | | | | | At mount time, we'll always need to create a tcon that will serve as a template for others that are associated with the mount. This tcon is known as the "master" tcon. In some cases, we'll need to use that tcon regardless of who's accessing the mount. Add an accessor function for the master tcon and go ahead and switch the appropriate places to use it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: temporarily rename cifs_sb->tcon to ptcon to catch stragglersJeff Layton2010-09-293-4/+4
| | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: add function to get a tcon from cifs_sbJeff Layton2010-09-2913-71/+74
| | | | | | | | | | When we convert cifs to do multiple sessions per mount, we'll need more than one tcon per superblock. At that point "cifs_sb->tcon" will make no sense. Add a new accessor function that gets a tcon given a cifs_sb. For now, it just returns cifs_sb->tcon. Later it'll do more. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: make various routines use the cifsFileInfo->tcon pointerJeff Layton2010-09-295-56/+45
| | | | | | | ...where it's available and appropriate. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix ordering of cleanup on module init failureSteve French2010-09-292-10/+9
| | | | | | | | If registering fs cache failed, we weren't cleaning up proc. Acked-by: Jeff Layton <jlayton@redhat.com> CC: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Remove obsolete headerSteve French2010-09-291-37/+0
| | | | | | | We decided not to use connector to do the upcalls so cn_cifs.h is obsolete - remove it. Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: allow matching of tcp sessions in CifsNew stateJeff Layton2010-09-291-9/+0
| | | | | | | | | | With commit 7332f2a6217ee6925f83ef0e725013067ed316ba, cifsd will no longer exit when the socket abends and the tcpStatus is CifsNew. With that change, there's no reason to avoid matching an existing session in this state. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: add tcon field to cifsFileInfo structJeff Layton2010-09-292-0/+2
| | | | | | | | | | Eventually, we'll have more than one tcon per superblock. At that point, we'll need to know which one is associated with a particular fid. For now, this is just set from the cifs_sb->tcon pointer, but eventually the caller of cifs_new_fileinfo will pass a tcon pointer in. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: add "mfsymlinks" mount optionStefan Metzmacher2010-09-293-0/+18
| | | | | | | | This is the start for an implementation of "Minshall+French Symlinks" (see http://wiki.samba.org/index.php/UNIX_Extensions#Minshall.2BFrench_symlinks). Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: use Minshall+French symlink functionsStefan Metzmacher2010-09-294-4/+47
| | | | | | | | | | If configured, Minshall+French Symlinks are used against all servers. If the server supports UNIX Extensions, we still create Minshall+French Symlinks on write, but on read we fallback to UNIX Extension symlinks. Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: implement CIFSCreateMFSymLink()Stefan Metzmacher2010-09-291-0/+45
| | | | | Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: implement CIFSFormatMFSymlink()Stefan Metzmacher2010-09-291-0/+41
| | | | | Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: implement CIFSQueryMFSymLink()Stefan Metzmacher2010-09-291-0/+50
| | | | | Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: implement CIFSCouldBeMFSymlink() and CIFSCheckMFSymlink()Stefan Metzmacher2010-09-292-0/+83
| | | | | Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: implement CIFSParseMFSymlink()Stefan Metzmacher2010-09-291-0/+62
| | | | | Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: Allow binding to local IP address.Ben Greear2010-09-293-2/+108
| | | | | | | | | | | | | | When using multi-homed machines, it's nice to be able to specify the local IP to use for outbound connections. This patch gives cifs the ability to bind to a particular IP address. Usage: mount -t cifs -o srcaddr=192.168.1.50,user=foo, ... Usage: mount -t cifs -o srcaddr=2002::100:1,user=foo, ... Acked-by: Jeff Layton <jlayton@redhat.com> Acked-by: Dr. David Holder <david.holder@erion.co.uk> Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs NTLMv2/NTLMSSP ntlmv2 within ntlmssp autentication codeShirish Pargaonkar2010-09-298-53/+225
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Attribue Value (AV) pairs or Target Info (TI) pairs are part of ntlmv2 authentication. Structure ntlmv2_resp had only definition for two av pairs. So removed it, and now allocation of av pairs is dynamic. For servers like Windows 7/2008, av pairs sent by server in challege packet (type 2 in the ntlmssp exchange/negotiation) can vary. Server sends them during ntlmssp negotiation. So when ntlmssp is used as an authentication mechanism, type 2 challenge packet from server has this information. Pluck it and use the entire blob for authenticaiton purpose. If user has not specified, extract (netbios) domain name from the av pairs which is used to calculate ntlmv2 hash. Servers like Windows 7 are particular about the AV pair blob. Servers like Windows 2003, are not very strict about the contents of av pair blob used during ntlmv2 authentication. So when security mechanism such as ntlmv2 is used (not ntlmv2 in ntlmssp), there is no negotiation and so genereate a minimal blob that gets used in ntlmv2 authentication as well as gets sent. Fields tilen and tilbob are session specific. AV pair values are defined. To calculate ntlmv2 response we need ti/av pair blob. For sec mech like ntlmssp, the blob is plucked from type 2 response from the server. From this blob, netbios name of the domain is retrieved, if user has not already provided, to be included in the Target String as part of ntlmv2 hash calculations. For sec mech like ntlmv2, create a minimal, two av pair blob. The allocated blob is freed in case of error. In case there is no error, this blob is used in calculating ntlmv2 response (in CalcNTLMv2_response) and is also copied on the response to the server, and then freed. The type 3 ntlmssp response is prepared on a buffer, 5 * sizeof of struct _AUTHENTICATE_MESSAGE, an empirical value large enough to hold _AUTHENTICATE_MESSAGE plus a blob with max possible 10 values as part of ntlmv2 response and lmv2 keys and domain, user, workstation names etc. Also, kerberos gets selected as a default mechanism if server supports it, over the other security mechanisms. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs NTLMv2/NTLMSSP Change variable name mac_key to session key to reflect ↵Shirish Pargaonkar2010-09-295-23/+23
| | | | | | | | | | | | the key it holds Change name of variable mac_key to session key. The reason mac_key was changed to session key is, this structure does not hold message authentication code, it holds the session key (for ntlmv2, ntlmv1 etc.). mac is generated as a signature in cifs_calc* functions. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: fix broken oplock handlingSuresh Jayaraman2010-09-293-10/+9
| | | | | | | | | | | | | | | | cifs_new_fileinfo() does not use the 'oplock' value from the callers. Instead, it sets it to REQ_OPLOCK which seems wrong. We should be using the oplock value obtained from the Server to set the inode's clientCanCacheAll or clientCanCacheRead flags. Fix this by passing oplock from the callers to cifs_new_fileinfo(). This change dates back to commit a6ce4932 (2.6.30-rc3). So, all the affected versions will need this fix. Please Cc stable once reviewed and accepted. Cc: Stable <stable@kernel.org> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: use type __u32 instead of int for the oplock parameterSuresh Jayaraman2010-09-291-4/+4
| | | | | | | | | | | | ... and avoid implicit casting from a signed type. Also, pass oplock by value instead by reference as we don't intend to change the value in cifs_open_inode_helper(). Thanks to Jeff Layton for spotting this. Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: fix potential double put of TCP session referenceJeff Layton2010-09-151-3/+3
| | | | | | | | | | | | | | | | | | | | | cifs_get_smb_ses must be called on a server pointer on which it holds an active reference. It first does a search for an existing SMB session. If it finds one, it'll put the server reference and then try to ensure that the negprot is done, etc. If it encounters an error at that point then it'll return an error. There's a potential problem here though. When cifs_get_smb_ses returns an error, the caller will also put the TCP server reference leading to a double-put. Fix this by having cifs_get_smb_ses only put the server reference if it found an existing session that it could use and isn't returning an error. Cc: stable@kernel.org Reviewed-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: prevent possible memory corruption in cifs_demultiplex_threadJeff Layton2010-09-083-11/+17
| | | | | | | | | | | | | cifs_demultiplex_thread sets the addr.sockAddr.sin_port without any regard for the socket family. While it may be that the error in question here never occurs on an IPv6 socket, it's probably best to be safe and set the port properly if it ever does. Break the port setting code out of cifs_fill_sockaddr and into a new function, and call that from cifs_demultiplex_thread. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: eliminate some more premature cifsd exitsJeff Layton2010-09-081-29/+12
| | | | | | | | | | | | | | | | | | | If the tcpStatus is still CifsNew, the main cifs_demultiplex_loop can break out prematurely in some cases. This is wrong as we will almost always have other structures with pointers to the TCP_Server_Info. If the main loop breaks under any other condition other than tcpStatus == CifsExiting, then it'll face a use-after-free situation. I don't see any reason to treat a CifsNew tcpStatus differently than CifsGood. I believe we'll still want to attempt to reconnect in either case. What should happen in those situations is that the MIDs get marked as MID_RETRY_NEEDED. This will make CIFSSMBNegotiate return -EAGAIN, and then the caller can retry the whole thing on a newly reconnected socket. If that fails again in the same way, the caller of cifs_get_smb_ses should tear down the TCP_Server_Info struct. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: prevent cifsd from exiting prematurelyJeff Layton2010-09-081-9/+7
| | | | | | | | | | | | | | | | | | | | | | | | | When cifs_demultiplex_thread exits, it does a number of cleanup tasks including freeing the TCP_Server_Info struct. Much of the existing code in cifs assumes that when there is a cisfSesInfo struct, that it holds a reference to a valid TCP_Server_Info struct. We can never allow cifsd to exit when a cifsSesInfo struct is still holding a reference to the server. The server pointers will then point to freed memory. This patch eliminates a couple of questionable conditions where it does this. The idea here is to make an -EINTR return from kernel_recvmsg behave the same way as -ERESTARTSYS or -EAGAIN. If the task was signalled from cifs_put_tcp_session, then tcpStatus will be CifsExiting, and the kernel_recvmsg call will return quickly. There's also another condition where this can occur too -- if the tcpStatus is still in CifsNew, then it will also exit if the server closes the socket prematurely. I think we'll probably also need to fix that situation, but that requires a bit more consideration. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] ntlmv2/ntlmssp remove-unused-function CalcNTLMv2_partial_mac_keySteve French2010-09-082-59/+0
| | | | | | | | This function is not used, so remove the definition and declaration. Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: eliminate redundant xdev check in cifs_renameJeff Layton2010-09-081-21/+9
| | | | | | | | | The VFS always checks that the source and target of a rename are on the same vfsmount, and hence have the same superblock. So, this check is redundant. Remove it and simplify the error handling. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* Revert "[CIFS] Fix ntlmv2 auth with ntlmssp"Steve French2010-09-0811-452/+172
| | | | | | | | | | | | This reverts commit 9fbc590860e75785bdaf8b83e48fabfe4d4f7d58. The change to kernel crypto and fixes to ntlvm2 and ntlmssp series, introduced a regression. Deferring this patch series to 2.6.37 after Shirish fixes it. Signed-off-by: Steve French <sfrench@us.ibm.com> Acked-by: Jeff Layton <jlayton@redhat.com> CC: Shirish Pargaonkar <shirishp@us.ibm.com>
* Revert "missing changes during ntlmv2/ntlmssp auth and sign"Steve French2010-09-082-10/+5
| | | | | | | | | | | | This reverts commit 3ec6bbcdb4e85403f2c5958876ca9492afdf4031. The change to kernel crypto and fixes to ntlvm2 and ntlmssp series, introduced a regression. Deferring this patch series to 2.6.37 after Shirish fixes it. Signed-off-by: Steve French <sfrench@us.ibm.com> Acked-by: Jeff Layton <jlayton@redhat.com> CC: Shirish Pargaonkar <shirishp@us.ibm.com>
* Revert "Eliminate sparse warning - bad constant expression"Steve French2010-09-082-128/+72
| | | | | | | | | | | | This reverts commit 2d20ca835867d93ead6ce61780d883a4b128106d. The change to kernel crypto and fixes to ntlvm2 and ntlmssp series, introduced a regression. Deferring this patch series to 2.6.37 after Shirish fixes it. Signed-off-by: Steve French <sfrench@us.ibm.com> Acked-by: Jeff Layton <jlayton@redhat.com> CC: Shirish Pargaonkar <shirishp@us.ibm.com>
* Revert "[CIFS] Eliminate unused variable warning"Steve French2010-09-081-2/+1
| | | | | | | | | | | | The change to kernel crypto and fixes to ntlvm2 and ntlmssp series, introduced a regression. Deferring this patch series to 2.6.37 after Shirish fixes it. This reverts commit c89e5198b26a869ce2842bad8519264f3394dee9. Signed-off-by: Steve French <sfrench@us.ibm.com> Acked-by: Jeff Layton <jlayton@redhat.com> CC: Shirish Pargaonkar <shirishp@us.ibm.com>
* Cannot allocate memory error on mountSuresh Jayaraman2010-08-261-1/+1
| | | | | | | | | | | | | | | | | | On 08/26/2010 01:56 AM, joe hefner wrote: > On a recent Fedora (13), I am seeing a mount failure message that I can not explain. I have a Windows Server 2003ýa with a share set up for access only for a specific username (say userfoo). If I try to mount it from Linux,ýusing userfoo and the correct password all is well. If I try with a bad password or with some other username (userbar), it fails with "Permission denied" as expected. If I try to mount as username = administrator, and give the correct administrator password, I would also expect "Permission denied", but I see "Cannot allocate memory" instead. > ýfs/cifs/netmisc.c: Mapping smb error code 5 to POSIX err -13 > ýfs/cifs/cifssmb.c: Send error in QPathInfo = -13 > ýCIFS VFS: cifs_read_super: get root inode failed Looks like the commit 0b8f18e3 assumed that cifs_get_inode_info() and friends fail only due to memory allocation error when the inode is NULL which is not the case if CIFSSMBQPathInfo() fails and returns an error. Fix this by propagating the actual error code back. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Eliminate unused variable warningSteve French2010-08-261-1/+2
| | | | | CC: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* Eliminate sparse warning - bad constant expressionshirishpargaonkar@gmail.com2010-08-242-72/+128
| | | | | | | | | | | | | | | | Eliminiate sparse warning during usage of crypto_shash_* APIs error: bad constant expression Allocate memory for shash descriptors once, so that we do not kmalloc/kfree it for every signature generation (shash descriptor for md5 hash). From ed7538619817777decc44b5660b52268077b74f3 Mon Sep 17 00:00:00 2001 From: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Date: Tue, 24 Aug 2010 11:47:43 -0500 Subject: [PATCH] eliminate sparse warnings during crypto_shash_* APis usage Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: check for NULL session passwordJeff Layton2010-08-231-0/+1
| | | | | | | | It's possible for a cifsSesInfo struct to have a NULL password, so we need to check for that prior to running strncmp on it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* missing changes during ntlmv2/ntlmssp auth and signShirish Pargaonkar2010-08-232-5/+10
| | | | | Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix ntlmv2 auth with ntlmsspSteve French2010-08-2011-172/+452
| | | | | | | | | | | | | | | | | | | | | Make ntlmv2 as an authentication mechanism within ntlmssp instead of ntlmv1. Parse type 2 response in ntlmssp negotiation to pluck AV pairs and use them to calculate ntlmv2 response token. Also, assign domain name from the sever response in type 2 packet of ntlmssp and use that (netbios) domain name in calculation of response. Enable cifs/smb signing using rc4 and md5. Changed name of the structure mac_key to session_key to reflect the type of key it holds. Use kernel crypto_shash_* APIs instead of the equivalent cifs functions. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: correction of unicode header filesIgor Druzhinin2010-08-202-15/+19
| | | | | | | | | This patch corrects a problem of compilation errors at removal of UNIUPR_NOLOWER definition and adds include guards to cifs_unicode.h. Signed-off-by: Igor Druzhinin <jaxbrigs@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: fix NULL pointer dereference in cifs_find_smb_sesJeff Layton2010-08-181-1/+2
| | | | | | | | | | | cifs_find_smb_ses assumes that the vol->password field is a valid pointer, but that's only the case if a password was passed in via the options string. It's possible that one won't be if there is no mount helper on the box. Reported-by: diabel <gacek-2004@wp.pl> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: consolidate error handling in several functionsJeff Layton2010-08-162-7/+4
| | | | | | | | | | | | | cifs has a lot of complicated functions that have to clean up things on error, but some of them don't have all of the cleanup code well-consolidated. Clean up and consolidate error handling in several functions. This is in preparation of later patches that will need to put references to the tcon link container. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: clean up error handling in cifs_mknodJeff Layton2010-08-161-75/+74
| | | | | | | Get rid of some nesting and add a label we can goto on error. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* cifs: update README to include details about 'fsc' optionSuresh Jayaraman2010-08-111-0/+10
| | | | | Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-08-102-49/+52
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits) no need for list_for_each_entry_safe()/resetting with superblock list Fix sget() race with failing mount vfs: don't hold s_umount over close_bdev_exclusive() call sysv: do not mark superblock dirty on remount sysv: do not mark superblock dirty on mount btrfs: remove junk sb_dirt change BFS: clean up the superblock usage AFFS: wait for sb synchronization when needed AFFS: clean up dirty flag usage cifs: truncate fallout mbcache: fix shrinker function return value mbcache: Remove unused features add f_flags to struct statfs(64) pass a struct path to vfs_statfs update VFS documentation for method changes. All filesystems that need invalidate_inode_buffers() are doing that explicitly convert remaining ->clear_inode() to ->evict_inode() Make ->drop_inode() just return whether inode needs to be dropped fs/inode.c:clear_inode() is gone fs/inode.c:evict() doesn't care about delete vs. non-delete paths now ... Fix up trivial conflicts in fs/nilfs2/super.c
| * cifs: truncate falloutChristoph Hellwig2010-08-091-23/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the calls to inode_newsize_ok given that we already did it as part of inode_change_ok in the beginning of cifs_setattr_(no)unix. No need to call ->truncate if cifs doesn't have one, so remove the explicit call in cifs_vmtruncate, and replace the calls to vmtruncate with truncate_setsize which is vmtruncate minus inode_newsize_ok and the call to ->truncate. Rename cifs_vmtruncate to cifs_setsize to match the new calling conventions. Question 1: why does cifs do the pagecache munging and i_size update twice for each setattr call, once opencoded in cifs_vmtruncate, and once using the VFS helpers? Question 2: what is supposed to be protected by i_lock in cifs_vmtruncate? Do we need it around the call to inode_change_ok? [AV: fixed build breakage] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * convert remaining ->clear_inode() to ->evict_inode()Al Viro2010-08-091-2/+4
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * Make ->drop_inode() just return whether inode needs to be droppedAl Viro2010-08-091-5/+4
| | | | | | | | | | | | ... and let iput_final() do the actual eviction or retention Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * always call inode_change_ok early in ->setattrChristoph Hellwig2010-08-091-16/+13
| | | | | | | | | | | | | | | | | | Make sure we call inode_change_ok before doing any changes in ->setattr, and make sure to call it even if our fs wants to ignore normal UNIX permissions, but use the ATTR_FORCE to skip those. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * remove inode_setattrChristoph Hellwig2010-08-091-12/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace inode_setattr with opencoded variants of it in all callers. This moves the remaining call to vmtruncate into the filesystem methods where it can be replaced with the proper truncate sequence. In a few cases it was obvious that we would never end up calling vmtruncate so it was left out in the opencoded variant: spufs: explicitly checks for ATTR_SIZE earlier btrfs,hugetlbfs,logfs,dlmfs: explicitly clears ATTR_SIZE earlier ufs: contains an opencoded simple_seattr + truncate that sets the filesize just above In addition to that ncpfs called inode_setattr with handcrafted iattrs, which allowed to trim down the opencoded variant. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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