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* [CIFS] enable get mode from ACL when cifsacl mount option specifiedShirish Pargaonkar2007-10-301-1/+3
| | | | | | | | Part 9 of ACL patch series. getting mode from ACL now works in some cases (and requires CIFS_EXPERIMENTAL config option). Signed-off-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Return better error when server requires signing but client forbidsSteve French2007-10-181-1/+2
| | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] fix bad handling of EAGAIN error on kernel_recvmsg in ↵Steve French2007-10-171-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | cifs_demultiplex_thread When kernel_recvmsg returns -EAGAIN or -ERESTARTSYS, then cifs_demultiplex_thread sleeps for a bit and then tries the read again. When it does this, it's not zeroing out the length and that throws off the value of total_read. Fix it to zero out the length. Can cause memory corruption: If kernel_recvmsg returns an error and total_read is a large enough value, then we'll end up going through the loop again. total_read will be a bogus value, as will (pdu_length-total_read). When this happens we end up calling kernel_recvmsg with a bogus value (possibly larger than the current iov_len). At that point, memcpy_toiovec can overrun iov. It will start walking up the stack, casting other things that are there to struct iovecs (since it assumes that it's been passed an array of them). Any pointer on the stack at an address above the kvec is a candidate for corruption here. Many thanks to Ulrich Obergfell for pointing this out. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix endian conversion problem in posix mkdirCyril Gorcunov2007-10-141-1/+2
| | | | | Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] CIFS ACL support part 3Steve French2007-10-121-1/+4
| | | | | Signed-off-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] named pipe support (part 2)Steve French2007-09-291-1/+6
| | | | | | Also fixes typo which could cause build break Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix memory leak in statfs to very old serversSteve French2007-09-281-0/+5
| | | | | | | We were allocating request buffers twice in the statfs path when mounted to very old (Windows 9x) servers. Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Byte range unlock request to non-Unix server can unlock too muchJeff Layton2007-08-241-1/+4
| | | | | | | | | | | | | | | | | On a mount without posix extensions enabled, when an unlock request is made, the client can release more than is intended. To reproduce, on a CIFS mount without posix extensions enabled: 1) open file 2) do fcntl lock: start=0 len=1 3) do fcntl lock: start=2 len=1 4) do fcntl unlock: start=0 len=1 ...on the unlock call the client sends an unlock request to the server for both locks. The problem is a bad test in cifs_lock. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix hang in find_writable_fileSteve French2007-07-261-1/+4
| | | | | | | | | | | | Caused by unneeded reopen during reconnect while spinlock held. Fixes kernel bugzilla bug #7903 Thanks to Lin Feng Shen for testing this, and Amit Arora for some nice problem determination to narrow this down. Acked-by: Dave Kleikamp <shaggy@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Add support for new POSIX unlinkSteve French2007-07-151-1/+3
| | | | | | | | | | 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>
* [CIFS] Fix oops in cifs_create when nfsd server exports cifs mountSteve French2007-07-111-1/+2
| | | | | | | | | | | nfsd is passing null nameidata (probably the only one doing that) on call to create - cifs was missing one check for this. Note that running nfsd over a cifs mount requires specifying fsid on the nfs exports entry and requires mounting cifs with serverino mount option. Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix packet signatures for NTLMv2 caseSteve French2007-07-091-0/+4
| | | | | Signed-off-by: Yehuda Sadeh Weinraub <Yehuda.Sadeh@expand.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Mount should fail if server signing off but client mount option ↵Jeff2007-07-061-0/+1
| | | | | | | | | | | | | | | | requires it Currently, if mount with a signing-enabled sec= option (e.g. sec=ntlmi), the kernel does a warning printk if the server doesn't support signing, and then proceeds without signatures. This is probably OK for people that think to look at the ring buffer, but seems wrong to me. If someone explicitly requests signing, we should error out if that request can't be satisfied. They can then reattempt the mount without signing if that's ok. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Add in some missing flags and cifs README and TODO correctionsSteve French2007-06-241-1/+4
| | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Make sec=none force an anonymous mountJeff Layton2007-05-051-1/+3
| | | | | | | | | | | | | | | | We had a customer report that attempting to make CIFS mount with a null username (i.e. doing an anonymous mount) doesn't work. Looking through the code, it looks like CIFS expects a NULL username from userspace in order to trigger an anonymous mount. The mount.cifs code doesn't seem to ever pass a null username to the kernel, however. It looks also like the kernel can take a sec=none option, but it only seems to look at it if the username is already NULL. This seems redundant and effectively makes sec=none useless. The following patch makes sec=none force an anonymous mount. Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] UID/GID override on CIFS mounts to SambaSteve French2007-04-301-1/+5
| | | | | | | | | | | | | | | | | | When CIFS Unix Extensions are negotiated we get the Unix uid and gid owners of the file from the server (on the Unix Query Path Info levels), but if the server's uids don't match the client uid's users were having to disable the Unix Extensions (which turned off features they still wanted). The changeset patch allows users to override uid and/or gid for file/directory owner with a default uid and/or gid specified at mount (as is often done when mounting from Linux cifs client to Windows server). This changeset also displays the uid and gid used by default in /proc/mounts (if applicable). Also cleans up code by adding some of the missing spaces after "if" keywords per-kernel style guidelines (as suggested by Randy Dunlap when he reviewed the patch). Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Add IPv6 supportSteve French2007-04-251-1/+7
| | | | | | | | | | | | | | IPv6 support was started a few years ago in the cifs client, but lacked a kernel helper function for parsing the ascii form of the ipv6 address. Now that that is added (and now IPv6 is the default that some OS use now) it was fairly easy to finish the cifs ipv6 support. This requires that CIFS_EXPERIMENTAL be enabled and (at least until the mount.cifs module is modified to use a new ipv6 friendly call instead of gethostbyname) and the ipv6 address be passed on the mount as "ip=" mount option. Thanks Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] New CIFS POSIX mkdir performance improvementSteve French2007-04-231-1/+4
| | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Add write perm for usr to file on windows should remove r/o dos attrSteve French2007-04-061-1/+4
| | | | | | | | | | | Remove read only dos attribute on chmod when adding any write permission (ie on any of user/group/other (not all of user/group/other ie 0222) when mounted to windows. Suggested by: Urs Fleisch Signed-off-by: Urs Fleisch <urs.fleisch@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Allow reset of file to ATTR_NORMAL when archive bit not setSteve French2007-03-231-1/+4
| | | | | | | | | | | | When a file had a dos attribute of 0x1 (readonly - but dos attribute of archive was not set) - doing chmod 0777 or equivalent would try to set a dos attribute of 0 (which some servers ignore) rather than ATTR_NORMAL (0x20) which most servers accept. Does not affect servers which support the CIFS Unix Extensions. Acked-by: Prasad Potluri <pvp@us.ibm.com> Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] reset mode when client notices that ATTR_READONLY is no longer setAlan Tyson2007-03-101-0/+3
| | | | | | Signed-off-by: Alan Tyso <atyson@hp.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] cifs_prepare_write was incorrectly rereading page in some casesSteve French2007-03-061-2/+3
| | | | | | | Noticed by Shaggy. Signed-off-by: Shaggy <shaggy@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix locking problem around some cifs uses of i_size writeSteve French2007-02-261-0/+6
| | | | | | | | | | | | | | | Could cause hangs on smp systems in i_size_read on a cifs inode whose size has been previously simultaneously updated from different processes. Thanks to Brian Wang for some great testing/debugging on this hard problem. Fixes kernel bugzilla #7903 CC: Shirish Pargoankar <shirishp@us.ibm.com> CC: Shaggy <shaggy@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] on reconnect to Samba - reset the unix capabilitiesSteve French2007-02-141-1/+6
| | | | | | | | | | 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>
* [CIFS] POSIX CIFS Extensions (continued) - POSIX OpenSteve French2007-02-081-0/+2
| | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Minor cleanupSteve French2007-02-061-0/+2
| | | | | | Missing tab. Missing entry in changelog Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Update CIFS version numberSteve French2006-12-231-0/+4
| | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix NTLMv2 mounts to Windows serversSteve French2006-12-081-1/+2
| | | | | | | | 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>
* [CIFS] report rename failure when target file is locked by WindowsSteve French2006-11-021-1/+3
| | | | | | | | | Fixes Samba bugzilla bug # 4182 Rename by handle failures (retry after rename by path) were not being returned back. Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Allow null user connectionsSteve French2006-10-301-0/+3
| | | | | | | | Some servers are configured to only allow null user mounts for guest access. Allow nul user (anonymous) mounts e.g. mount -t cifs //server/share /mnt -o username= Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Support deep tree mounts (e.g. mounts to //server/share/path)Steve French2006-09-211-1/+6
| | | | | | Samba bugzilla #4040 Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Do not send Query All EAs SMB when mount option nouser_xattrSteve French2006-08-161-1/+2
| | | | | | | | specified Pointed out by Bjoern Jacke Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix oops in cifs_close due to unitialized lock sem and list inSteve French2006-08-151-1/+4
| | | | | | new POSIX locking code Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Do not time out posix brl requests when using new posix setfileinfoSteve French2006-08-111-0/+6
| | | | | | | | | | request and do not time out slow requests to a server that is still responding well to other threads Suggested by jra of Samba team Signed-off-by: Steve French <sfrench@us.ibm.com> (cherry picked from 89b57148115479eef074b8d3f86c4c86c96ac969 commit)
* [CIFS] Fix allocation of buffers for new session setup routine to allowSteve French2006-06-271-1/+2
| | | | | | longer user and domain names and allow passing sec options on mount Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] NTLMv2 support part 5Steve French2006-06-081-1/+3
| | | | | | | | | | | | | | | NTLMv2 authentication (stronger authentication than default NTLM) which many servers support now works. There was a problem with the construction of the security blob in the older code. Currently requires /proc/fs/cifs/Experimental to be set to 2 and /proc/fs/cifs/SecurityFlags to be set to 0x4004 (to require using NTLMv2 instead of default of NTLM) Next we will check signing to make sure optional NTLMv2 packet signing also works. Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Add support for readdir to legacy serversSteve French2006-06-071-0/+4
| | | | | | | Fixes oops to OS/2 on ls and removes redundant NTCreateX calls to servers which do not support NT SMBs. Key operations to OS/2 work. Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Support for setting up SMB sessions to legacy lanman serversSteve French2006-05-311-0/+5
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* [CIFS] Cleanup extra whitespace in dmesg logging. Update cifs change logSteve French2006-05-311-1/+4
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* [CIFS] Do not limit the length of share names (was 100 for whole UNC name)Steve French2006-05-301-1/+3
| | | | | | during mount. Especially important for some non-Western languages. Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix new POSIX Locking for setting lock_type correctly on unlockSteve French2006-05-301-0/+5
| | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Readdir fixes to allow search to start at arbitrary positionSteve French2006-04-221-1/+5
| | | | | | | | | in directory Also includes first part of fix to compensate for servers which forget to return . and .. as well as updates to changelog and cifs readme. Signed-off-by: Steve French <sfrench@us.ibm.com>
* Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.gitSteve French2006-03-311-1/+1
|\ | | | | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
| * It's UTF-8Alexey Dobriyan2006-03-221-1/+1
| | | | | | | | | | | | | | Fix some comments to "UTF-8". Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* | [CIFS] Upate cifs change logSteve French2006-03-031-0/+5
| | | | | | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
* | [CIFS] Workaround various server bugs found in testing at connectathonSteve French2006-03-031-1/+2
| | | | | | | | | | | | | | | | | | - slow down negprot 1ms during mount when RFC1001 over port 139 to give buggy servers time to clear sess_init - remap some plausible but incorrect SMB return codes to the right ones in truncate and hardlink paths Signed-off-by: Steve French <sfrench@us.ibm.com>
* | [CIFS] Add posix (advisory) byte range locking support to cifs clientSteve French2006-02-281-1/+3
| | | | | | | | | | | | | | | | Samba (version 3) server support for this is also currently being done. This client code is in an experimental path (requires enabling /proc/fs/cifs/Experimental) while it is being tested. Signed-off-by: Steve French <sfrench@us.ibm.com>
* | [CIFS] Fix large (ie over 64K for MaxCIFSBufSize) buffer case for wrappingSteve French2006-02-241-1/+5
| | | | | | | | | | | | bcc on read response and for wrapping sessionsetup maxbufsize field Signed-off-by: Steve French <sfrench@us.ibm.com>
* | [CIFS] Cleanup NTLMSSP session setup handlingSteve French2006-02-091-0/+6
|/ | | | | | Fix to hash NTLMv2 properly will follow. Signed-off-by: Steve French <sfrench@us.ibm.com>
* [CIFS] Fix CIFS to recognize share mode securitySteve French2006-01-131-1/+2
| | | | | | | | | Fix Samba bugzilla bug 3301 In share mode encrypted password must be sent on tree connection (in our case only the NTLM password is sent, not the older LANMAN one). Signed-off-by: Steve French <sfrench@us.ibm.com>
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