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path: root/fs/cifs/cifsproto.h (follow)
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2012-07-24CIFS: Move protocol specific tcon/tdis code to ops structPavel Shilovsky1-4/+4
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 Shilovsky1-5/+5
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 Shilovsky1-3/+3
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 Shilovsky1-2/+2
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>
2012-07-23cifs: rename cifs_sign_smb2 to cifs_sign_smbvJeff Layton1-1/+1
"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>
2012-07-23cifs: move file_lock off stack in cifs_push_posix_locksJeff Layton1-2/+3
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>
2012-06-01CIFS: Move get_next_mid to ops structPavel Shilovsky1-1/+0
Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23CIFS: Move add/set_credits and get_credits_field to ops structurePavel Shilovsky1-3/+0
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-23CIFS: Move protocol specific part from SendReceive2 to ops structPavel Shilovsky1-0/+2
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-17cifs: Include backup intent search flags during searches {try #2)Shirish Pargaonkar1-2/+4
As observed and suggested by Tushar Gosavi... --------- readdir calls these function to send TRANS2_FIND_FIRST and TRANS2_FIND_NEXT command to the server. The current cifs module is not specifying CIFS_SEARCH_BACKUP_SEARCH flag while sending these command when backupuid/backupgid is specified. This can be resolved by specifying CIFS_SEARCH_BACKUP_SEARCH flag. --------- Cc: <stable@kernel.org> Reported-and-Tested-by: Tushar Gosavi <tugosavi@in.ibm.com> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-16cifs: convert cifs_iovec_read to use async readsJeff Layton1-0/+2
Convert cifs_iovec_read to use async I/O. This also raises the limit on the rsize for uncached reads. We first allocate a set of pages to hold the replies, then issue the reads in parallel and then collect the replies and copy the results into the iovec. A possible future optimization would be to kmap and inline the iovec buffers and read the data directly from the socket into that. That would require some rather complex conversion of the iovec into a kvec however. Signed-off-by: Jeff Layton <jlayton@redhat.com>
2012-05-16cifs: add refcounting to cifs_readdata structuresJeff Layton1-0/+2
This isn't strictly necessary for the async readpages code, but the uncached version will need to be able to collect the replies after issuing the calls. Add a kref to cifs_readdata and use change the code to take and put references appropriately. Signed-off-by: Jeff Layton <jlayton@redhat.com>
2012-05-16cifs: abstract out function to marshal the iovec for readv receivesJeff Layton1-0/+2
Cached and uncached reads will need to do different things here to handle the difference when the pages are in pagecache and not. Abstract out the function that marshals the page list into a kvec array. Signed-off-by: Jeff Layton <jlayton@redhat.com>
2012-05-16cifs: make cifs_readdata_alloc take a work_func_t argJeff Layton1-2/+0
We'll need different completion routines for an uncached read. Allow the caller to set the one he needs at allocation time. Also, move most of these functions to file.c so we can make more of them static. Signed-off-by: Jeff Layton <jlayton@redhat.com>
2012-03-23cifs: convert cifs_iovec_write to use async writesJeff Layton1-0/+2
Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-23cifs: abstract out function to marshal up the iovec array for async writesJeff Layton1-0/+2
We'll need to do something a bit different depending on the caller. Abstract the code that marshals the page array into an iovec. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-23cifs: allow caller to specify completion op when allocating writedataJeff Layton1-1/+3
We'll need a different set of write completion ops when not writing out of the pagecache. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-23cifs: add pid field to cifs_writedataJeff Layton1-0/+1
We'll need this to handle rwpidforward option correctly when we use async writes in the aio_write op. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-23CIFS: Expand CurrentMid fieldPavel Shilovsky1-1/+1
While in CIFS/SMB we have 16 bit mid, in SMB2 it is 64 bit. Convert the existing field to 64 bit and mask off higher bits for CIFS/SMB. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-23CIFS: Separate protocol-specific code from cifs_readv_receive codePavel Shilovsky1-1/+1
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-23CIFS: Separate protocol-specific code from demultiplex codePavel Shilovsky1-3/+2
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-23CIFS: Separate protocol-specific code from transport routinesPavel Shilovsky1-1/+1
that lets us use this functions for SMB2. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
2012-03-21cifs: clean up call to cifs_dfs_release_automount_timer()Jeff Layton1-0/+6
Take the #ifdef junk out of the code, and turn it into a noop macro when CONFIG_CIFS_DFS_UPCALL isn't defined. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-03-21CIFS: Introduce credit-based flow controlPavel Shilovsky1-0/+3
and send no more than credits value requests at once. For SMB/CIFS it's trivial: increment this value by receiving any message and decrement by sending one. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-10-29cifs: Assume passwords are encoded according to iocharset (try #2)Shirish Pargaonkar1-3/+5
Re-posting a patch originally posted by Oskar Liljeblad after rebasing on 3.2. Modify cifs to assume that the supplied password is encoded according to iocharset. Before this patch passwords would be treated as raw 8-bit data, which made authentication with Unicode passwords impossible (at least passwords with characters > 0xFF). The previous code would as a side effect accept passwords encoded with ISO 8859-1, since Unicode < 0x100 basically is ISO 8859-1. Software which relies on that will no longer support password chars > 0x7F unless it also uses iocharset=iso8859-1. (mount.cifs does not care about the encoding so it will work as expected.) Signed-off-by: Oskar Liljeblad <oskar@osk.mine.nu> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Tested-by: A <nimbus1_03087@yahoo.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-24CIFS: Send as many mandatory unlock ranges at once as possiblePavel Shilovsky1-0/+3
that reduces a traffic and increases a performance. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-24CIFS: Implement caching mechanism for posix brlocksPavel Shilovsky1-2/+2
to handle all lock requests on the client in an exclusive oplock case. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-19cifs: add cifs_async_readvJeff Layton1-0/+24
...which will allow cifs to do an asynchronous read call to the server. The caller will allocate and set up cifs_readdata for each READ_AND_X call that should be issued on the wire. The pages passed in are added to the pagecache, but not placed on the LRU list yet (as we need the page->lru to keep the pages on the list in the readdata). When cifsd identifies the mid, it will see that there is a special receive handler for the call, and use that to receive the rest of the frame. cifs_readv_receive will then marshal up a kvec array with kmapped pages from the pagecache, which eliminates one copy of the data. Once the data is received, the pages are added to the LRU list, set uptodate, and unlocked. Reviewed-and-Tested-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com>
2011-10-19cifs: add a callback function to receive the rest of the frameJeff Layton1-2/+3
In order to handle larger SMBs for readpages and other calls, we want to be able to read into a preallocated set of buffers. Rather than changing all of the existing code to preallocate buffers however, we instead add a receive callback function to the MID. cifsd will call this function once the mid_q_entry has been identified in order to receive the rest of the SMB. If the mid can't be identified or the receive pointer is unset, then the standard 3rd phase receive function will be called. Reviewed-and-Tested-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com>
2011-10-17cifs: Call id to SID mapping functions to change owner/group (try #4 repost)Shirish Pargaonkar1-3/+4
Now build security descriptor to change either owner or group at the server. Initially security descriptor was built to change only (D)ACL, that functionality has been extended. When either an Owner or a Group of a file object at the server is changed, rest of security descriptor remains same (DACL etc.). To set security descriptor, it is necessary to open that file with permission bits of either WRITE_DAC if DACL is being modified or WRITE_OWNER (Take Ownership) if Owner or Group is being changed. It is the server that decides whether a set security descriptor with either owner or group change succeeds or not. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-13CIFS: Simplify byte range locking codePavel Shilovsky1-1/+1
Split cifs_lock into several functions and let CIFSSMBLock get pid as an argument. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-12cifs: Add mount options for backup intent (try #6)Shirish Pargaonkar1-0/+1
Add mount options backupuid and backugid. It allows an authenticated user to access files with the intent to back them up including their ACLs, who may not have access permission but has "Backup files and directories user right" on them (by virtue of being part of the built-in group Backup Operators. When mount options backupuid is specified, cifs client restricts the use of backup intents to the user whose effective user id is specified along with the mount option. When mount options backupgid is specified, cifs client restricts the use of backup intents to the users whose effective user id belongs to the group id specified along with the mount option. If an authenticated user is not part of the built-in group Backup Operators at the server, access to such files is denied, even if allowed by the client. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-12cifs: consolidate signature generating codeJeff Layton1-1/+1
We have two versions of signature generating code. A vectorized and non-vectorized version. Eliminate a large chunk of cut-and-paste code by turning the non-vectorized version into a wrapper around the vectorized one. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2011-07-08cifs: factor smb_vol allocation out of cifs_setup_volume_infoJeff Layton1-2/+2
Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-07-06cifs: have cifs_cleanup_volume_info not take a double pointerJeff Layton1-1/+1
...as that makes for a cumbersome interface. Make it take a regular smb_vol pointer and rely on the caller to zero it out if needed. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-06-24sanitize cifs_umount() prototypeAl Viro1-1/+1
a) superblock argument is unused b) it always returns 0 Acked-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-24cifs: don't pass superblock to cifs_mount()Al Viro1-3/+3
To close sget() races we'll need to be able to set cifs_sb up before we get the superblock, so we'll want to be able to do cifs_mount() earlier. Fortunately, it's easy to do - setting ->s_maxbytes can be done in cifs_read_super(), ditto for ->s_time_gran and as for putting MS_POSIXACL into ->s_flags, we can mirror it in ->mnt_cifs_flags until cifs_read_super() is called. Kill unused 'devname' argument, while we are at it... Acked-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-05-27[CIFS] Rename three structures to avoid camel caseSteve French1-76/+76
secMode to sec_mode and cifsTconInfo to cifs_tcon and cifsSesInfo to cifs_ses Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27CIFS: Add rwpidforward mount optionPavel Shilovsky1-3/+2
Add rwpidforward mount option that switches on a mode when we forward pid of a process who opened a file to any read and write operation. This can prevent applications like WINE from failing on read or write operation on a previously locked file region from the same netfd from another process if we use mandatory brlock style. It is actual for WINE because during a run of WINE program two processes work on the same netfd - share the same file struct between several VFS fds: 1) WINE-server does open and lock; 2) WINE-application does read and write. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-27[CIFS] Migrate from prefixpath logicSteve French1-2/+3
Now we point superblock to a server share root and set a root dentry appropriately. This let us share superblock between mounts like //server/sharename/foo/bar and //server/sharename/foo further. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-26CIFS: Use pid saved from cifsFileInfo in writepages and set_file_sizePavel Shilovsky1-8/+5
We need it to make them work with mandatory locking style because we can fail in a situation like when kernel need to flush dirty pages and there is a lock held by a process who opened file. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-25cifs: add cifs_async_writevJeff Layton1-0/+18
Add the ability for CIFS to do an asynchronous write. The kernel will set the frame up as it would for a "normal" SMBWrite2 request, and use cifs_call_async to send it. The mid callback will then be configured to handle the result. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-24CIFS: Simplify mount code for further shared sb capabilityPavel Shilovsky1-1/+7
Reorganize code to get mount option at first and when get a superblock. This lets us use shared superblock model further for equal mounts. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-23cifs: add ignore_pend flag to cifs_call_asyncJeff Layton1-1/+1
The current code always ignores the max_pending limit. Have it instead only optionally ignore the pending limit. For CIFSSMBEcho, we need to ignore it to make sure they always can go out. For async reads, writes and potentially other calls, we need to respect it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-23cifs: make cifs_send_async take a kvec arrayJeff Layton1-2/+2
We'll need this for async writes, so convert the call to take a kvec array. CIFSSMBEcho is changed to put a kvec on the stack and pass in the SMB buffer using that. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-23cifs: consolidate SendReceive response checksJeff Layton1-1/+3
Further consolidate the SendReceive code by moving the checks run over the packet into a separate function that all the SendReceive variants can call. We can also eliminate the check for a receive_len that's too big or too small. cifs_demultiplex_thread already checks that and disconnects the socket if that occurs, while setting the midStatus to MALFORMED. It'll never call this code if that's the case. Finally do a little cleanup. Use "goto out" on errors so that the flow of code in the normal case is more evident. Also switch the logErr variable in map_smb_to_linux_error to a bool. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19[CIFS] Remove sparse warningSteve French1-2/+0
Move extern for cifsConvertToUCS to different header to prevent following warning: CHECK fs/cifs/cifs_unicode.c fs/cifs/cifs_unicode.c:267:1: warning: symbol 'cifsConvertToUCS' was not declared. Should it be static? Signed-off-by: Steve French <sfrench@us.ibm.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19cifs: Unconditionally copy mount options to superblock infoSean Finney1-1/+1
Previously mount options were copied and updated in the cifs_sb_info struct only when CONFIG_CIFS_DFS_UPCALL was enabled. Making this information generally available allows us to remove a number of ifdefs, extra function params, and temporary variables. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Sean Finney <seanius@seanius.net> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19cifs: keep BCC in little-endian formatJeff Layton1-1/+0
This is the same patch as originally posted, just with some merge conflicts fixed up... Currently, the ByteCount is usually converted to host-endian on receive. This is confusing however, as we need to keep two sets of routines for accessing it, and keep track of when to use each routine. Munging received packets like this also limits when the signature can be calulated. Simplify the code by keeping the received ByteCount in little-endian format. This allows us to eliminate a set of routines for accessing it and we can now drop the *_le suffixes from the accessor functions since that's now implied. While we're at it, switch all of the places that read the ByteCount directly to use the get_bcc inline which should also clean up some unaligned accesses. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-19cifs: Add idmap key and related data structures and functions (try #17 repost)Shirish Pargaonkar1-0/+3
Define (global) data structures to store ids, uids and gids, to which a SID maps. There are two separate trees, one for SID/uid and another one for SID/gid. A new type of key, cifs_idmap_key_type, is used. Keys are instantiated and searched using credential of the root by overriding and restoring the credentials of the caller requesting the key. Id mapping functions are invoked under config option of cifs acl. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
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