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path: root/fs/cifs/cifspdu.h
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2011-10-28Add definition for share encryptionSteve French1-7/+37
Samba supports a setfs info level to negotiate encrypted shares. This patch adds the defines so we recognize this info level. Later patches will add the enablement for it. Acked-by: Jeremy Allison <jra@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
2011-10-19cifs: fix protocol definition for READ_RSPJeff Layton1-3/+1
There is no pad, and it simplifies the code to remove the "Data" field. None of the existing code relies on these fields, or on the READ_RSP being a particular length. Reviewed-and-Tested-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com>
2011-05-19cifs: turn BCC into a static inlined functionJeff Layton1-3/+6
It's a bad idea to have macro functions that reference variables more than once, as the arguments could have side effects. Turn BCC() into a static inlined function instead. While we're at it, make it return a void * to discourage anyone from dereferencing it as-is. Reported-and-acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> 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: keep BCC in little-endian formatJeff Layton1-20/+2
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>
2011-05-19consistently use smb_buf_length as be32 for cifs (try 3)Steve French1-3/+3
There is one big endian field in the cifs protocol, the RFC1001 length, which cifs code (unlike in the smb2 code) had been handling as u32 until the last possible moment, when it was converted to be32 (its native form) before sending on the wire. To remove the last sparse endian warning, and to make this consistent with the smb2 implementation (which always treats the fields in their native size and endianness), convert all uses of smb_buf_length to be32. This version incorporates Christoph's comment about using be32_add_cpu, and fixes a typo in the second version of the patch. 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>
2011-01-21cifs: use get/put_unaligned functions to access ByteCountJeff Layton1-4/+43
It's possible that when we access the ByteCount that the alignment will be off. Most CPUs deal with that transparently, but there's usually some performance impact. Some CPUs raise an exception on unaligned accesses. Fix this by accessing the byte count using the get_unaligned and put_unaligned inlined functions. While we're at it, fix the types of some of the variables that end up getting returns from these functions. Acked-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-01-20cifs: add ability to send an echo requestJeff Layton1-0/+15
Reviewed-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-10-26NTLM auth and sign - Define crypto hash functions and create and send keys ↵Shirish Pargaonkar1-0/+6
needed for key exchange Mark dependency on crypto modules in Kconfig. Defining per structures sdesc and cifs_secmech which are used to store crypto hash functions and contexts. They are stored per smb connection and used for all auth mechs to genereate hash values and signatures. Allocate crypto hashing functions, security descriptiors, and respective contexts when a smb/tcp connection is established. Release them when a tcp/smb connection is taken down. md5 and hmac-md5 are two crypto hashing functions that are used throught the life of an smb/tcp connection by various functions that calcualte signagure and ntlmv2 hash, HMAC etc. structure ntlmssp_auth is defined as per smb connection. ntlmssp_auth holds ciphertext which is genereated by rc4/arc4 encryption of secondary key, a nonce using ntlmv2 session key and sent in the session key field of the type 3 message sent by the client during ntlmssp negotiation/exchange A key is exchanged with the server if client indicates so in flags in type 1 messsage and server agrees in flag in type 2 message of ntlmssp negotiation. If both client and agree, a key sent by client in type 3 message of ntlmssp negotiation in the session key field. The key is a ciphertext generated off of secondary key, a nonce, using ntlmv2 hash via rc4/arc4. Signing works for ntlmssp in this patch. The sequence number within the server structure needs to be zero until session is established i.e. till type 3 packet of ntlmssp exchange of a to be very first smb session on that smb connection is sent. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-10-26NTLM auth and sign - Allocate session key/client response dynamicallyShirish Pargaonkar1-1/+6
Start calculating auth response within a session. Move/Add pertinet data structures like session key, server challenge and ntlmv2_hash in a session structure. We should do the calculations within a session before copying session key and response over to server data structures because a session setup can fail. Only after a very first smb session succeeds, it copy/make its session key, session key of smb connection. This key stays with the smb connection throughout its life. sequence_number within server is set to 0x2. The authentication Message Authentication Key (mak) which consists of session key followed by client response within structure session_key is now dynamic. Every authentication type allocates the key + response sized memory within its session structure and later either assigns or frees it once the client response is sent and if session's session key becomes connetion's session key. ntlm/ntlmi authentication functions are rearranged. A function named setup_ntlm_resp(), similar to setup_ntlmv2_resp(), replaces function cifs_calculate_session_key(). size of CIFS_SESS_KEY_SIZE is changed to 16, to reflect the byte size of the key it holds. Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-09-29cifs NTLMv2/NTLMSSP ntlmv2 within ntlmssp autentication codeShirish Pargaonkar1-1/+0
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>
2010-09-09Revert "[CIFS] Fix ntlmv2 auth with ntlmssp"Steve French1-6/+1
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>
2010-08-21[CIFS] Fix ntlmv2 auth with ntlmsspSteve French1-1/+6
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>
2010-02-23cifs: add parens around smb_var in BCC macrosJeff Layton1-3/+3
...to remove ambiguity about how these values are interpreted when passing in more complex values as arguments. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-12-05tree-wide: fix misspelling of "definition" in commentsAdam Buchbinder1-1/+1
"Definition" is misspelled "defintion" in several comments; this patch fixes them. No code changes. Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-07-02cifs: add new cifs_iget function and convert unix codepath to use itJeff Layton1-13/+1
cifs: add new cifs_iget function and convert unix codepath to use it In order to unify some codepaths, introduce a common cifs_fattr struct for storing inode attributes. The different codepaths (unix, legacy, normal, etc...) can fill out this struct with inode info. It can then be passed as an arg to a common set of routines to get and update inodes. Add a new cifs_iget function that uses iget5_locked to identify inodes. This will compare inodes based on the uniqueid value in a cifs_fattr struct. Rather than filling out an already-created inode, have cifs_get_inode_info_unix instead fill out cifs_fattr and hand that off to cifs_iget. cifs_iget can then properly look for hardlinked inodes. On the readdir side, add a new cifs_readdir_lookup function that spawns populated dentries. Redefine FILE_UNIX_INFO so that it's basically a FILE_UNIX_BASIC_INFO that has a few fields wrapped around it. This allows us to more easily use the same function for filling out the fattr as the non-readdir codepath. With this, we should then have proper hardlink detection and can eventually get rid of some nasty CIFS-specific hacks for handing them. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-04-17[CIFS] Endian convert UniqueId when reporting inode numbers from server filesSteve French1-4/+4
Jeff made a good point that we should endian convert the UniqueId when we use it to set i_ino Even though this value is opaque to the client, when comparing the inode numbers of the same server file from two different clients (one big endian, one little endian) or when we compare a big endian client's view of i_ino with what the server thinks - we should get the same value Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-03-12[CIFS] Add definitions for remoteably fsctl callsSteve French1-43/+6
There are about 60 fsctl calls which Windows claims would be able to be sent remotely and handled by the server. This adds the #defines for them. A few of them look immediately useful, but need to also add the structure definitions for them so they can be sent as SMBs. Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-03-12[CIFS] DFS no longer experimentalSteve French1-10/+10
Also updates some DFS flag definitions Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-03-12[CIFS] Send SMB flush in cifs_fsyncSteve French1-0/+7
In contrast to the now-obsolete smbfs, cifs does not send SMB_COM_FLUSH in response to an explicit fsync(2) to guarantee that all volatile data is written to stable storage on the server side, provided the server honors the request (which, to my knowledge, is true for Windows and Samba with 'strict sync' enabled). This patch modifies the cifs_fsync implementation to restore the fsync-behavior of smbfs by triggering SMB_COM_FLUSH after sending outstanding data on the client side to the server. Signed-off-by: Horst Reiterer <horst.reiterer@gmail.com> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-12-26[CIFS] various minor cleanups pointed out by checkpatch scriptSteve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-08-06bundle up Unix SET_PATH_INFO args into a struct and change nameJeff Layton1-1/+1
We'd like to be able to use the unix SET_PATH_INFO_BASIC args to set file times as well, but that makes the argument list rather long. Bundle up the args for unix SET_PATH_INFO call into a struct. For now, we don't actually use the times fields anywhere. That will be done in a follow-on patch. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-07-24[CIFS] Fix warnings from checkpatchShirish Pargaonkar1-4/+4
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-24[CIFS] Correct incorrect obscure open flagSteve French1-5/+18
Also add defines for pipe subcommand codes Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-16[CIFS] Add missing defines for DFSSteve French1-0/+9
Also has minor cleanup of previous patch CC: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-16CIFSGetDFSRefer cleanup + dfs_referral_level_3 fixed to conform REFERRAL_V3 ↵Igor Mammedov1-9/+7
the MS-DFSC spec. Signed-off-by: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-11[CIFS] when not using unix extensions, check for and set ATTR_READONLY on ↵Jeff Layton1-0/+1
create and mkdir When creating a directory on a CIFS share without POSIX extensions, and the given mode has no write bits set, set the ATTR_READONLY bit. When creating a file, set ATTR_READONLY if the create mode has no write bits set and we're not using unix extensions. There are some comments about this being problematic due to the VFS splitting creates into 2 parts. I'm not sure what that's actually talking about, but I'm assuming that it has something to do with how mknod is implemented. In the simple case where we have no unix extensions and we're just creating a regular file, there's no reason we can't set ATTR_READONLY. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-04-25[CIFS] Fix spelling mistakeSteve French1-1/+1
Noticed by Joe Perches Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-04-24[CIFS] Fix typo in previous commitSteve French1-2/+2
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-04-24[CIFS] Fix define for new proxy cap to match documentationSteve French1-2/+5
The transport encryption capability and new SetFSInfo level were missing, and the new proxy capability (which Samba server is implementing) and proxy setfsinfo needed to be moved down to not collide with Samba's transport encryption capability. CC: Jeremy Allison <jra@samba.org> CC: Sam Liddicott <sam@lidicott.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-04-18[CIFS] Reserve new proxy cap for WAFSSteve French1-1/+7
New WAFS filer uses ioctls which are shown to be available on a share by querying this info level Acked-by: Sam Liddicott <sam@liddicott.com> Signed-off-by: Stevef French <sfrench@us.ibm.com>
2008-04-18[CIFS] Add various missing flags and defintionsSteve French1-13/+97
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-12-31[CIFS] Allow setting mode via cifs aclSteve French1-0/+3
Requires cifsacl mount flag to be on and CIFS_EXPERIMENTAL enabled CC: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-11-01[CIFS] If no Access Control Entries, set mode perm bits to zeroSteve French1-0/+23
Also clean up ACL code Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-31[CIFS] Don't request too much permission when reading an ACLSteve French1-0/+17
We were requesting GENERIC_READ but that fails when we do not have read permission on the file (even if we could read the ACL). Also move the dump access control entry code into debug ifdef. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-10-18[CIFS] acl support part 4Steve French1-0/+6
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-09-29[CIFS] named pipe support (part 2)Steve French1-0/+8
Also fixes typo which could cause build break Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-08-31[CIFS] formatting cleanup found by checkpatchSteve French1-3/+3
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-15[CIFS] Add support for new POSIX unlinkSteve French1-0/+6
In the cleanup phase of the dbench test, we were noticing sharing violation followed by failed directory removals when dbench did not close the test files before the cleanup phase started. Using the new POSIX unlink, which Samba has supported for a few months, avoids this. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-07-13[CIFS] whitespace/formatting fixesSteve French1-135/+149
This should be the last big batch of whitespace/formatting fixes. checkpatch warnings for the cifs directory are down about 90% and many of the remaining ones are harder to remove or make the code harder to read. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-06-24[CIFS] Add in some missing flags and cifs README and TODO correctionsSteve French1-3/+8
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-04-24[CIFS] New CIFS POSIX mkdir performance improvementSteve French1-7/+25
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-03-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds1-1/+7
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] Allow reset of file to ATTR_NORMAL when archive bit not set [CIFS] Do not negotiate new POSIX_PATH_OPERATIONS_CAP yet [CIFS] reset mode when client notices that ATTR_READONLY is no longer set
2007-03-16[CIFS] Do not negotiate new POSIX_PATH_OPERATIONS_CAP yetSteve French1-1/+7
Samba server now expects that clients which send the new POSIX_PATH_OPERATIONS_CAP send all opens with this new SMB - and expects that clients that could send the new posix open/create but don't as indicating that they really want Windows semantics on that handle (which allows Samba to support clients which want to support both types of behaviors on different handles on the same mount) We will put this capability back in the SetFSInfo negotiation with servers like Samba when the new POSIXCreate (create/open/mkdir) code is finished. Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-03-15[PATCH] cifs endianness annotationsAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01[CIFS] Fix set file size to zero when doing chmod to Samba 3.0.26preSteve French1-0/+3
In fixing a bug Samba 3.0.26pre allowed some clients (including Linux cifs client) to change file size to zero in SET_FILE_UNIX_BASIC (which Linux cifs client uses for chmod). The server has been "fixed" now but that also fixes the client to net send file size zero on chmod. Fixes Samba bugzilla bug # 4418. Fixed with help from Jeremy Allison Signed-off-by: Jeremy Allison <jra@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-02-15[CIFS] fix &&/& typo in cifs_setattr()Steve French1-3/+5
Thanks to Dirk for pointing this out. Signed-off-by: Dirk Mueller <dmueller@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-02-14[CIFS] on reconnect to Samba - reset the unix capabilitiesSteve French1-1/+1
After temporary server or network failure and reconneciton, we were not resending the unix capabilities via SetFSInfo - which confused Samba posix byte range locking code. Discovered by jra Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-02-08[CIFS] POSIX CIFS Extensions (continued) - POSIX OpenSteve French1-0/+15
Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-02-07[CIFS] Additional POSIX CIFS Extensions infolevelsSteve French1-23/+46
also includes cleanup of whitespace/80 columns Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-12-08[CIFS] Fix NTLMv2 mounts to Windows serversSteve French1-1/+7
Windows servers are pickier about NTLMv2 than Samba. This enables more secure mounts to Windows (not just Samba) ie when "sec=ntlmv2" is specified on the mount. Signed-off-by: Steve French <sfrench@us.ibm.com>
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