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* Revert "locks: keep a count of locks on the flctx lists"Jeff Layton2015-02-161-4/+10
| | | | | | | | | | | This reverts commit 9bd0f45b7037fcfa8b575c7e27d0431d6e6dc3bb. Linus rightly pointed out that I failed to initialize the counters when adding them, so they don't work as expected. Just revert this patch for now. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
* Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-blockLinus Torvalds2015-02-122-3/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull backing device changes from Jens Axboe: "This contains a cleanup of how the backing device is handled, in preparation for a rework of the life time rules. In this part, the most important change is to split the unrelated nommu mmap flags from it, but also removing a backing_dev_info pointer from the address_space (and inode), and a cleanup of other various minor bits. Christoph did all the work here, I just fixed an oops with pages that have a swap backing. Arnd fixed a missing export, and Oleg killed the lustre backing_dev_info from staging. Last patch was from Al, unexporting parts that are now no longer needed outside" * 'for-3.20/bdi' of git://git.kernel.dk/linux-block: Make super_blocks and sb_lock static mtd: export new mtd_mmap_capabilities fs: make inode_to_bdi() handle NULL inode staging/lustre/llite: get rid of backing_dev_info fs: remove default_backing_dev_info fs: don't reassign dirty inodes to default_backing_dev_info nfs: don't call bdi_unregister ceph: remove call to bdi_unregister fs: remove mapping->backing_dev_info fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info nilfs2: set up s_bdi like the generic mount_bdev code block_dev: get bdev inode bdi directly from the block device block_dev: only write bdev inode on close fs: introduce f_op->mmap_capabilities for nommu mmap support fs: kill BDI_CAP_SWAP_BACKED fs: deduplicate noop_backing_dev_info
| * fs: remove mapping->backing_dev_infoChristoph Hellwig2015-01-201-2/+0
| | | | | | | | | | | | | | | | | | | | | | Now that we never use the backing_dev_info pointer in struct address_space we can simply remove it and save 4 to 8 bytes in every inode. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Reviewed-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
| * fs: introduce f_op->mmap_capabilities for nommu mmap supportChristoph Hellwig2015-01-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since "BDI: Provide backing device capability information [try #3]" the backing_dev_info structure also provides flags for the kind of mmap operation available in a nommu environment, which is entirely unrelated to it's original purpose. Introduce a new nommu-only file operation to provide this information to the nommu mmap code instead. Splitting this from the backing_dev_info structure allows to remove lots of backing_dev_info instance that aren't otherwise needed, and entirely gets rid of the concept of providing a backing_dev_info for a character device. It also removes the need for the mtd_inodefs filesystem. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Tejun Heo <tj@kernel.org> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-02-101-1/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge misc updates from Andrew Morton: "Bite-sized chunks this time, to avoid the MTA ratelimiting woes. - fs/notify updates - ocfs2 - some of MM" That laconic "some MM" is mainly the removal of remap_file_pages(), which is a big simplification of the VM, and which gets rid of a *lot* of random cruft and special cases because we no longer support the non-linear mappings that it used. From a user interface perspective, nothing has changed, because the remap_file_pages() syscall still exists, it's just done by emulating the old behavior by creating a lot of individual small mappings instead of one non-linear one. The emulation is slower than the old "native" non-linear mappings, but nobody really uses or cares about remap_file_pages(), and simplifying the VM is a big advantage. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits) memcg: zap memcg_slab_caches and memcg_slab_mutex memcg: zap memcg_name argument of memcg_create_kmem_cache memcg: zap __memcg_{charge,uncharge}_slab mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check mm: hugetlb: fix type of hugetlb_treat_as_movable variable mm, hugetlb: remove unnecessary lower bound on sysctl handlers"? mm: memory: merge shared-writable dirtying branches in do_wp_page() mm: memory: remove ->vm_file check on shared writable vmas xtensa: drop _PAGE_FILE and pte_file()-related helpers x86: drop _PAGE_FILE and pte_file()-related helpers unicore32: drop pte_file()-related helpers um: drop _PAGE_FILE and pte_file()-related helpers tile: drop pte_file()-related helpers sparc: drop pte_file()-related helpers sh: drop _PAGE_FILE and pte_file()-related helpers score: drop _PAGE_FILE and pte_file()-related helpers s390: drop pte_file()-related helpers parisc: drop _PAGE_FILE and pte_file()-related helpers openrisc: drop _PAGE_FILE and pte_file()-related helpers nios2: drop _PAGE_FILE and pte_file()-related helpers ...
| * | mm: drop vm_ops->remap_pages and generic_file_remap_pages() stubKirill A. Shutemov2015-02-101-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nobody uses it anymore. [akpm@linux-foundation.org: fix filemap_xip.c] Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge tag 'locks-v3.20-1' of git://git.samba.org/jlayton/linuxLinus Torvalds2015-02-101-23/+11
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull file locking related changes #1 from Jeff Layton: "This patchset contains a fairly major overhaul of how file locks are tracked within the inode. Rather than a single list, we now create a per-inode "lock context" that contains individual lists for the file locks, and a new dedicated spinlock for them. There are changes in other trees that are based on top of this set so it may be easiest to pull this in early" * tag 'locks-v3.20-1' of git://git.samba.org/jlayton/linux: locks: update comments that refer to inode->i_flock locks: consolidate NULL i_flctx checks in locks_remove_file locks: keep a count of locks on the flctx lists locks: clean up the lm_change prototype locks: add a dedicated spinlock to protect i_flctx lists locks: remove i_flock field from struct inode locks: convert lease handling to file_lock_context locks: convert posix locks to file_lock_context locks: move flock locks to file_lock_context ceph: move spinlocking into ceph_encode_locks_to_buffer and ceph_count_locks locks: add a new struct file_locking_context pointer to struct inode locks: have locks_release_file use flock_lock_file to release generic flock locks locks: add new struct list_head to struct file_lock
| * | locks: keep a count of locks on the flctx listsJeff Layton2015-01-161-10/+4
| | | | | | | | | | | | | | | | | | | | | | | | This makes things a bit more efficient in the cifs and ceph lock pushing code. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Acked-by: Christoph Hellwig <hch@lst.de>
| * | locks: add a dedicated spinlock to protect i_flctx listsJeff Layton2015-01-161-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | We can now add a dedicated spinlock without expanding struct inode. Change to using that to protect the various i_flctx lists. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Acked-by: Christoph Hellwig <hch@lst.de>
| * | locks: convert posix locks to file_lock_contextJeff Layton2015-01-161-16/+10
| |/ | | | | | | | | Signed-off-by: Jeff Layton <jlayton@primarydata.com> Acked-by: Christoph Hellwig <hch@lst.de>
* | Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds2015-02-043-4/+10
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull cifs fixes from Steve French: "Three small cifs fixes. One fixes a hang under stress, and the other two are security related" * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: cifs: fix MUST SecurityFlags filtering Complete oplock break jobs before closing file handle cifs: use memzero_explicit to clear stack buffer
| * | cifs: fix MUST SecurityFlags filteringNiklas Cassel2015-01-261-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If CONFIG_CIFS_WEAK_PW_HASH is not set, CIFSSEC_MUST_LANMAN and CIFSSEC_MUST_PLNTXT is defined as 0. When setting new SecurityFlags without any MUST flags, your flags would be overwritten with CIFSSEC_MUST_LANMAN (0). Signed-off-by: Niklas Cassel <niklass@axis.com> Signed-off-by: Steve French <steve.french@primarydata.com>
| * | Complete oplock break jobs before closing file handleSachin Prabhu2015-01-191-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit c11f1df5003d534fd067f0168bfad7befffb3b5c requires writers to wait for any pending oplock break handler to complete before proceeding to write. This is done by waiting on bit CIFS_INODE_PENDING_OPLOCK_BREAK in cifsFileInfo->flags. This bit is cleared by the oplock break handler job queued on the workqueue once it has completed handling the oplock break allowing writers to proceed with writing to the file. While testing, it was noticed that the filehandle could be closed while there is a pending oplock break which results in the oplock break handler on the cifsiod workqueue being cancelled before it has had a chance to execute and clear the CIFS_INODE_PENDING_OPLOCK_BREAK bit. Any subsequent attempt to write to this file hangs waiting for the CIFS_INODE_PENDING_OPLOCK_BREAK bit to be cleared. We fix this by ensuring that we also clear the bit CIFS_INODE_PENDING_OPLOCK_BREAK when we remove the oplock break handler from the workqueue. The bug was found by Red Hat QA while testing using ltp's fsstress command. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Jeff Layton <jlayton@samba.org> Cc: stable@vger.kernel.org Signed-off-by: Steve French <steve.french@primarydata.com>
| * | cifs: use memzero_explicit to clear stack bufferGiel van Schijndel2015-01-191-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | When leaving a function use memzero_explicit instead of memset(0) to clear stack allocated buffers. memset(0) may be optimized away. This particular buffer is highly likely to contain sensitive data which we shouldn't leak (it's named 'passwd' after all). Signed-off-by: Giel van Schijndel <me@mortis.eu> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Reported-at: http://www.viva64.com/en/b/0299/ Reported-by: Andrey Karpov Reported-by: Svyatoslav Razmyslov Signed-off-by: Steve French <steve.french@primarydata.com>
* / fix deadlock in cifs_ioctl_clone()Al Viro2015-01-181-16/+5
|/ | | | | | | | | | | | | | It really needs to check that src is non-directory *and* use {un,}lock_two_nodirectories(). As it is, it's trivial to cause double-lock (ioctl(fd, CIFS_IOC_COPYCHUNK_FILE, fd)) and if the last argument is an fd of directory, we are asking for trouble by violating the locking order - all directories go before all non-directories. If the last argument is an fd of parent directory, it has 50% odds of locking child before parent, which will cause AB-BA deadlock if we race with unlink(). Cc: stable@vger.kernel.org @ 3.13+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* cifs: make new inode cache when file type is differentNakajima Akira2014-12-221-3/+7
| | | | | | | | | | | | | | | | | | | | | | | In spite of different file type, if file is same name and same inode number, old inode cache is used. This causes that you can not cd directory, can not cat SymbolicLink. So this patch is that if file type is different, return error. Reproducible sample : 1. create file 'a' at cifs client. 2. repeat rm and mkdir 'a' 4 times at server, then direcotry 'a' having same inode number is created. (Repeat 4 times, then same inode number is recycled.) (When server is under RHEL 6.6, 1 time is O.K. Always same inode number is recycled.) 3. ls -li at client, then you can not cd directory, can not remove directory. SymbolicLink has same problem. Bug link: https://bugzilla.kernel.org/show_bug.cgi?id=90011 Signed-off-by: Nakajima Akira <nakajima.akira@nttcom.co.jp> Acked-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: Steve French <steve.french@primarydata.com>
* Fix signed/unsigned pointer warningKevin Cernekee2014-12-141-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | Commit 2ae83bf93882d1 ("[CIFS] Fix setting time before epoch (negative time values)") changed "u64 t" to "s64 t", which makes do_div() complain about a pointer signedness mismatch: CC fs/cifs/netmisc.o In file included from ./arch/mips/include/asm/div64.h:12:0, from include/linux/kernel.h:124, from include/linux/list.h:8, from include/linux/wait.h:6, from include/linux/net.h:23, from fs/cifs/netmisc.c:25: fs/cifs/netmisc.c: In function ‘cifs_NTtimeToUnix’: include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast [enabled by default] (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ fs/cifs/netmisc.c:941:22: note: in expansion of macro ‘do_div’ ts.tv_nsec = (long)do_div(t, 10000000) * 100; Introduce a temporary "u64 abs_t" variable to fix this. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Steve French <steve.french@primarydata.com>
* Convert MessageID in smb2_hdr to LESachin Prabhu2014-12-145-11/+14
| | | | | | | | | | | | | | We have encountered failures when When testing smb2 mounts on ppc64 machines when using both Samba as well as Windows 2012. On poking around, the problem was determined to be caused by the high endian MessageID passed in the header for smb2. On checking the corresponding MID for smb1 is converted to LE before being sent on the wire. We have tested this patch successfully on a ppc64 machine. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
* Merge branch 'akpm' (patchbomb from Andrew)Linus Torvalds2014-12-109-51/+51
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge first patchbomb from Andrew Morton: - a few minor cifs fixes - dma-debug upadtes - ocfs2 - slab - about half of MM - procfs - kernel/exit.c - panic.c tweaks - printk upates - lib/ updates - checkpatch updates - fs/binfmt updates - the drivers/rtc tree - nilfs - kmod fixes - more kernel/exit.c - various other misc tweaks and fixes * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits) exit: pidns: fix/update the comments in zap_pid_ns_processes() exit: pidns: alloc_pid() leaks pid_namespace if child_reaper is exiting exit: exit_notify: re-use "dead" list to autoreap current exit: reparent: call forget_original_parent() under tasklist_lock exit: reparent: avoid find_new_reaper() if no children exit: reparent: introduce find_alive_thread() exit: reparent: introduce find_child_reaper() exit: reparent: document the ->has_child_subreaper checks exit: reparent: s/while_each_thread/for_each_thread/ in find_new_reaper() exit: reparent: fix the cross-namespace PR_SET_CHILD_SUBREAPER reparenting exit: reparent: fix the dead-parent PR_SET_CHILD_SUBREAPER reparenting exit: proc: don't try to flush /proc/tgid/task/tgid exit: release_task: fix the comment about group leader accounting exit: wait: drop tasklist_lock before psig->c* accounting exit: wait: don't use zombie->real_parent exit: wait: cleanup the ptrace_reparented() checks usermodehelper: kill the kmod_thread_locker logic usermodehelper: don't use CLONE_VFORK for ____call_usermodehelper() fs/hfs/catalog.c: fix comparison bug in hfs_cat_keycmp nilfs2: fix the nilfs_iget() vs. nilfs_new_inode() races ...
| * fs/cifs/smb2file.c: replace count*size kzalloc by kcallocFabian Frederick2014-12-101-2/+2
| | | | | | | | | | | | | | | | | | kcalloc manages count*sizeof overflow. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Steve French <sfrench@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * fs/cifs/file.c: replace count*size kzalloc by kcallocFabian Frederick2014-12-101-2/+2
| | | | | | | | | | | | | | | | | | kcalloc manages count*sizeof overflow. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Steve French <sfrench@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * fs/cifs: remove obsolete __constantFabian Frederick2014-12-107-47/+47
| | | | | | | | | | | | | | | | | | | | | | Replace all __constant_foo to foo() except in smb2status.h (1700 lines to update). Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Steve French <sfrench@samba.org> Cc: Jeff Layton <jlayton@poochiereds.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2014-12-105-14/+19
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull VFS changes from Al Viro: "First pile out of several (there _definitely_ will be more). Stuff in this one: - unification of d_splice_alias()/d_materialize_unique() - iov_iter rewrite - killing a bunch of ->f_path.dentry users (and f_dentry macro). Getting that completed will make life much simpler for unionmount/overlayfs, since then we'll be able to limit the places sensitive to file _dentry_ to reasonably few. Which allows to have file_inode(file) pointing to inode in a covered layer, with dentry pointing to (negative) dentry in union one. Still not complete, but much closer now. - crapectomy in lustre (dead code removal, mostly) - "let's make seq_printf return nothing" preparations - assorted cleanups and fixes There _definitely_ will be more piles" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits) copy_from_iter_nocache() new helper: iov_iter_kvec() csum_and_copy_..._iter() iov_iter.c: handle ITER_KVEC directly iov_iter.c: convert copy_to_iter() to iterate_and_advance iov_iter.c: convert copy_from_iter() to iterate_and_advance iov_iter.c: get rid of bvec_copy_page_{to,from}_iter() iov_iter.c: convert iov_iter_zero() to iterate_and_advance iov_iter.c: convert iov_iter_get_pages_alloc() to iterate_all_kinds iov_iter.c: convert iov_iter_get_pages() to iterate_all_kinds iov_iter.c: convert iov_iter_npages() to iterate_all_kinds iov_iter.c: iterate_and_advance iov_iter.c: macros for iterating over iov_iter kill f_dentry macro dcache: fix kmemcheck warning in switch_names new helper: audit_file() nfsd_vfs_write(): use file_inode() ncpfs: use file_inode() kill f_dentry uses lockd: get rid of ->f_path.dentry->d_sb ...
| * | kill f_dentry usesAl Viro2014-11-191-1/+1
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | cifs: get rid of ->f_path.dentry->d_sb uses, add a new helperAl Viro2014-11-194-11/+16
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | switch d_materialise_unique() users to d_splice_alias()Al Viro2014-11-191-1/+1
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | move d_rcu from overlapping d_child to overlapping d_aliasAl Viro2014-11-031-1/+1
| |/ | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | cifs: remove unneeded condition checkNamjae Jeon2014-12-071-4/+0
| | | | | | | | | | | | | | | | | | file->private_data can never be null after calling initiate_cifs_search. So private null check condition is not needed. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com> Signed-off-by: Steve French <steve.french@primarydata.com>
* | Set UID in sess_auth_rawntlmssp_authenticate tooSachin Prabhu2014-12-071-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A user complained that they were unable to login to their cifs share after a kernel update. From the wiretrace we can see that the server returns different UIDs as response to NTLMSSP_NEGOTIATE and NTLMSSP_AUTH phases. With changes in the authentication code, we no longer set the cifs_sess->Suid returned in response to the NTLM_AUTH phase and continue to use the UID sent in response to the NTLMSSP_NEGOTIATE phase. This results in the server denying access to the user when the user attempts to do a tcon connect. See https://bugzilla.redhat.com/show_bug.cgi?id=1163927 A test kernel containing patch was tested successfully by the user. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Signed-off-by: Steve French <steve.french@primarydata.com>
* | cifs: convert printk(LEVEL...) to pr_<level>Andy Shevchenko2014-12-074-42/+25
| | | | | | | | | | | | | | | | | | The useful macros embed message level in the name. Thus, it cleans up the code a bit. In cases when it was plain printk() the conversion was done to info level. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Steve French <steve.french@primarydata.com>
* | cifs: convert to print_hex_dump() instead of custom implementationAndy Shevchenko2014-12-072-49/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts custom dumper to use native print_hex_dump() instead. The cifs_dump_mem() will have an offsets per each line which differs it from the original code. In the dump_smb() we may use native print_hex_dump() as well. It will show slightly different output in ASCII part when character is unprintable, otherwise it keeps same structure. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Steve French <steve.french@primarydata.com>
* | cifs: call strtobool instead of custom implementationAndy Shevchenko2014-12-071-22/+29
| | | | | | | | | | | | | | | | | | | | | | Meanwhile it cleans up the code, the behaviour is slightly changed. In case of providing non-boolean value it will fails with corresponding error. In the original code the attempt of an update was just ignored in such case. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jeff Layton <jlayton@poochiereds.net> Reviewed-by: Alexander Bokovoy <ab@samba.org> Signed-off-by: Steve French <steve.french@primarydata.com>
* | Update modinfo cifs version for cifs.koSteve French2014-12-071-1/+1
| | | | | | | | | | | | update cifs version to 2.06 Signed-off-by: Steve French <smfrench@gmail.com>
* | decode_negTokenInit had wrong calling sequenceSteve French2014-12-071-2/+1
| | | | | | | | | | For krb5 enablement of SMB3, decoding negprot, caller now passes server struct not the old sec_type
* | Add missing defines for ACL query supportSteve French2014-12-071-0/+19
| | | | | | | | | | | | | | | | | | Add missing defines needed for ACL query support. For definitions of these security info type additionalinfo flags and also the EA Flags see MS-SMB2 (2.2.37) or MS-DTYP Signed-of-by: Steven French <smfrench@gmail.com> Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
* | Add support for original fallocateSteve French2014-12-071-1/+62
|/ | | | | | | | | | In many cases the simple fallocate call is a no op (since the file is already not sparse) or can simply be converted from a sparse to a non-sparse file if we are fallocating the whole file and keeping the size. Signed-off-by: Steven French <smfrench@gmail.com>
* [CIFS] Remove obsolete commentSteve French2014-10-171-6/+4
| | | | Signed-off-by: Steven French <smfrench@gmail.com>
* Check minimum response length on query_network_interfaceSteve French2014-10-161-4/+7
| | | | | Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
* Workaround Mac server problemSteve French2014-10-161-3/+10
| | | | | | | | | | | Mac server returns that they support CIFS Unix Extensions but doesn't actually support QUERY_FILE_UNIX_BASIC so mount fails. Workaround this problem by disabling use of Unix CIFS protocol extensions if server returns an EOPNOTSUPP error on QUERY_FILE_UNIX_BASIC during mount. Signed-off-by: Steve French <smfrench@gmail.com>
* Remap reserved posix characters by default (part 3/3)Steve French2014-10-1611-77/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a bigger patch, but its size is mostly due to a single change for how we check for remapping illegal characters in file names - a lot of repeated, small changes to the way callers request converting file names. The final patch in the series does the following: 1) changes default behavior for cifs to be more intuitive. Currently we do not map by default to seven reserved characters, ie those valid in POSIX but not in NTFS/CIFS/SMB3/Windows, unless a mount option (mapchars) is specified. Change this to by default always map and map using the SFM maping (like the Mac uses) unless the server negotiates the CIFS Unix Extensions (like Samba does when mounting with the cifs protocol) when the remapping of the characters is unnecessary. This should help SMB3 mounts in particular since Samba will likely be able to implement this mapping with its new "vfs_fruit" module as it will be doing for the Mac. 2) if the user specifies the existing "mapchars" mount option then use the "SFU" (Microsoft Services for Unix, SUA) style mapping of the seven characters instead. 3) if the user specifies "nomapposix" then disable SFM/MAC style mapping (so no character remapping would be used unless the user specifies "mapchars" on mount as well, as above). 4) change all the places in the code that check for the superblock flag on the mount which is set by mapchars and passed in on all path based operation and change it to use a small function call instead to set the mapping type properly (and check for the mapping type in the cifs unicode functions) Signed-off-by: Steve French <smfrench@gmail.com>
* Allow conversion of characters in Mac remap range (part 2)Steve French2014-10-162-26/+83
| | | | | | | | | The previous patch allowed remapping reserved characters from directory listenings, this patch adds conversion the other direction, allowing opening of files with any of the seven reserved characters. Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
* Allow conversion of characters in Mac remap range. Part 1Steve French2014-10-165-33/+107
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows directory listings to Mac to display filenames correctly which have been created with illegal (to Windows) characters in their filename. It does not allow converting the other direction yet ie opening files with these characters (followon patch). There are seven reserved characters that need to be remapped when mounting to Windows, Mac (or any server without Unix Extensions) which are valid in POSIX but not in the other OS. : \ < > ? * | We used the normal UCS-2 remap range for this in order to convert this to/from UTF8 as did Windows Services for Unix (basically add 0xF000 to any of the 7 reserved characters), at least when the "mapchars" mount option was specified. Mac used a very slightly different "Services for Mac" remap range 0xF021 through 0xF027. The attached patch allows cifs.ko (the kernel client) to read directories on macs containing files with these characters and display their names properly. In theory this even might be useful on mounts to Samba when the vfs_catia or new "vfs_fruit" module is loaded. Currently the 7 reserved characters look very strange in directory listings from cifs.ko to Mac server. This patch allows these file name characters to be read (requires specifying mapchars on mount). Two additional changes are needed: 1) Make it more automatic: a way of detecting enough info so that we know to try to always remap these characters or not. Various have suggested that the SFM approach be made the default when the server does not support POSIX Unix extensions (cifs mounts to Samba for example) so need to make SFM remapping the default unless mapchars (SFU style mapping) specified on mount or no mapping explicitly requested or no mapping needed (cifs mounts to Samba). 2) Adding a patch to map the characters the other direction (ie UTF-8 to UCS-2 on open). This patch does it for translating readdir entries (ie UCS-2 to UTF-8) Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
* mfsymlinks support for SMB2.1/SMB3. Part 2 query symlinkSteve French2014-10-163-1/+75
| | | | | | | | | | | | | Adds support on SMB2.1 and SMB3 mounts for emulation of symlinks via the "Minshall/French" symlink format already used for cifs mounts when mfsymlinks mount option is used (and also used by Apple). http://wiki.samba.org/index.php/UNIX_Extensions#Minshall.2BFrench_symlinks This second patch adds support to query them (recognize them as symlinks and read them). Third version of patch makes minor corrections to error handling. Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Stefan Metzmacher <metze@samba.org>
* Add mfsymlinks support for SMB2.1/SMB3. Part 1 create symlinkSteve French2014-10-163-1/+68
| | | | | | | | | | | | | | | | | Adds support on SMB2.1 and SMB3 mounts for emulation of symlinks via the "Minshall/French" symlink format already used for cifs mounts when mfsymlinks mount option is used (and also used by Apple). http://wiki.samba.org/index.php/UNIX_Extensions#Minshall.2BFrench_symlinks This first patch adds support to create them. The next patch will add support for recognizing them and reading them. Although CIFS/SMB3 have other types of symlinks, in the many use cases they aren't practical (e.g. either require cifs only mounts with unix extensions to Samba, or require the user to be Administrator to Windows for SMB3). This also helps enable running additional xfstests over SMB3 (since some xfstests directly or indirectly require symlink support). Signed-off-by: Steve French <smfrench@gmail.com> CC: Stefan Metzmacher <metze@samba.org>
* Allow mknod and mkfifo on SMB2/SMB3 mountsSteve French2014-10-168-30/+55
| | | | | | | | | | | | | | | | | | | | | The "sfu" mount option did not work on SMB2/SMB3 mounts. With these changes when the "sfu" mount option is passed in on an smb2/smb2.1/smb3 mount the client can emulate (and recognize) fifo and device (character and device files). In addition the "sfu" mount option should not conflict with "mfsymlinks" (symlink emulation) as we will never create "sfu" style symlinks, but using "sfu" mount option will allow us to recognize existing symlinks, created with Microsoft "Services for Unix" (SFU and SUA). To enable the "sfu" mount option for SMB2/SMB3 the calling syntax of the generic cifs/smb2/smb3 sync_read and sync_write protocol dependent function needed to be changed (we don't have a file struct in all cases), but this actually ended up simplifying the code a little. Signed-off-by: Steve French <smfrench@gmail.com>
* add defines for two new file attributesSteve French2014-10-161-0/+2
| | | | | Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
* cifs: replace strnicmp with strncasecmpRasmus Villemoes2014-10-142-5/+5
| | | | | | | | | | | | | | | | | The kernel used to contain two functions for length-delimited, case-insensitive string comparison, strnicmp with correct semantics and a slightly buggy strncasecmp. The latter is the POSIX name, so strnicmp was renamed to strncasecmp, and strnicmp made into a wrapper for the new strncasecmp to avoid breaking existing users. To allow the compat wrapper strnicmp to be removed at some point in the future, and to avoid the extra indirection cost, do s/strnicmp/strncasecmp/g. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Steve French <sfrench@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2014-10-134-24/+20
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs updates from Al Viro: "The big thing in this pile is Eric's unmount-on-rmdir series; we finally have everything we need for that. The final piece of prereqs is delayed mntput() - now filesystem shutdown always happens on shallow stack. Other than that, we have several new primitives for iov_iter (Matt Wilcox, culled from his XIP-related series) pushing the conversion to ->read_iter()/ ->write_iter() a bit more, a bunch of fs/dcache.c cleanups and fixes (including the external name refcounting, which gives consistent behaviour of d_move() wrt procfs symlinks for long and short names alike) and assorted cleanups and fixes all over the place. This is just the first pile; there's a lot of stuff from various people that ought to go in this window. Starting with unionmount/overlayfs mess... ;-/" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (60 commits) fs/file_table.c: Update alloc_file() comment vfs: Deduplicate code shared by xattr system calls operating on paths reiserfs: remove pointless forward declaration of struct nameidata don't need that forward declaration of struct nameidata in dcache.h anymore take dname_external() into fs/dcache.c let path_init() failures treated the same way as subsequent link_path_walk() fix misuses of f_count() in ppp and netlink ncpfs: use list_for_each_entry() for d_subdirs walk vfs: move getname() from callers to do_mount() gfs2_atomic_open(): skip lookups on hashed dentry [infiniband] remove pointless assignments gadgetfs: saner API for gadgetfs_create_file() f_fs: saner API for ffs_sb_create_file() jfs: don't hash direct inode [s390] remove pointless assignment of ->f_op in vmlogrdr ->open() ecryptfs: ->f_op is never NULL android: ->f_op is never NULL nouveau: __iomem misannotations missing annotation in fs/file.c fs: namespace: suppress 'may be used uninitialized' warnings ...
| * cifs: switch to use of %p[dD]Al Viro2014-10-093-19/+19
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * vfs: Make d_invalidate return voidEric W. Biederman2014-10-091-5/+1
| | | | | | | | | | | | | | | | | | | | Now that d_invalidate can no longer fail, stop returning a useless return code. For the few callers that checked the return code update remove the handling of d_invalidate failure. Reviewed-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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