- 10 9月, 2016 2 次提交
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由 Sachin Prabhu 提交于
Signed-off-by: NSachin Prabhu <sprabhu@redhat.com> Tested-by: NAurelien Aptel <aaptel@suse.com> Signed-off-by: NSteve French <smfrench@gmail.com>
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由 Sachin Prabhu 提交于
Fix memory leaks introduced by the patch fs/cifs: make share unaccessible at root level mountable Also move allocation of cifs_sb->prepath to cifs_setup_cifs_sb(). Signed-off-by: NSachin Prabhu <sprabhu@redhat.com> Tested-by: NAurelien Aptel <aaptel@suse.com> Signed-off-by: NSteve French <smfrench@gmail.com>
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- 28 7月, 2016 1 次提交
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由 Aurelien Aptel 提交于
if, when mounting //HOST/share/sub/dir/foo we can query /sub/dir/foo but not any of the path components above: - store the /sub/dir/foo prefix in the cifs super_block info - in the superblock, set root dentry to the subpath dentry (instead of the share root) - set a flag in the superblock to remember it - use prefixpath when building path from a dentry fixes bso#8950 Signed-off-by: NAurelien Aptel <aaptel@suse.com> CC: Stable <stable@vger.kernel.org> Reviewed-by: NPavel Shilovsky <pshilovsky@samba.org> Signed-off-by: NSteve French <smfrench@gmail.com>
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- 24 6月, 2016 1 次提交
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由 Jeff Layton 提交于
Right now, we send the tgid cross the wire. What we really want to send though is a hashed fl_owner_t since samba treats this field as a generic lockowner. It turns out that because we enforce and release locks locally before they are ever sent to the server, this patch makes no difference in behavior. Still, setting OFD locks on the server using the process pid seems wrong, so I think this patch still makes sense. Signed-off-by: NJeff Layton <jlayton@poochiereds.net> Signed-off-by: NSteve French <smfrench@gmail.com> Acked-by: NPavel Shilovsky <pshilovsky@samba.org> Acked-by: NSachin Prabhu <sprabhu@redhat.com>
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- 20 5月, 2016 2 次提交
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由 Steve French 提交于
Remove some obsolete comments in the cifs inode_operations structs that were pointed out by Stephen Rothwell. CC: Stephen Rothwell <sfr@canb.auug.org.au> CC: Al Viro <viro@zeniv.linux.org.uk> Reviewed-by: NSachin Prabhu <sprabhu@redhat.com> Signed-off-by: NSteve French <steve.french@primarydata.com>
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由 Sachin Prabhu 提交于
The session key is the default keyring set for request_key operations. This session key is revoked when the user owning the session logs out. Any long running daemon processes started by this session ends up with revoked session keyring which prevents these processes from using the request_key mechanism from obtaining the krb5 keys. The problem has been reported by a large number of autofs users. The problem is also seen with multiuser mounts where the share may be used by processes run by a user who has since logged out. A reproducer using automount is available on the Red Hat bz. The patch creates a new keyring which is used to cache cifs spnego upcalls. Red Hat bz: 1267754 Signed-off-by: NSachin Prabhu <sprabhu@redhat.com> Reported-by: NScott Mayhew <smayhew@redhat.com> Reviewed-by: NShirish Pargaonkar <shirishpargaonkar@gmail.com> CC: Stable <stable@vger.kernel.org> Signed-off-by: NSteve French <smfrench@gmail.com>
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- 03 5月, 2016 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 24 4月, 2016 1 次提交
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由 Andreas Gruenbacher 提交于
Use xattr handlers for resolving attribute names. The amount of setup code required on cifs is nontrivial, so use the same get and set functions for all handlers, with switch statements for the different types of attributes in them. The set_EA handler can handle NULL values, so we don't need a separate removexattr function anymore. Remove the cifs_dbg statements related to xattr name resolution; they don't add much. Don't build xattr.o when CONFIG_CIFS_XATTR is not defined. Signed-off-by: NAndreas Gruenbacher <agruenba@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 05 4月, 2016 1 次提交
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由 Kirill A. Shutemov 提交于
PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); This patch contains automated changes generated with coccinelle using script below. For some reason, coccinelle doesn't patch header files. I've called spatch for them manually. The only adjustment after coccinelle is revert of changes to PAGE_CAHCE_ALIGN definition: we are going to drop it later. There are few places in the code where coccinelle didn't reach. I'll fix them manually in a separate patch. Comments and documentation also will be addressed with the separate patch. virtual patch @@ expression E; @@ - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ expression E; @@ - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ @@ - PAGE_CACHE_SHIFT + PAGE_SHIFT @@ @@ - PAGE_CACHE_SIZE + PAGE_SIZE @@ @@ - PAGE_CACHE_MASK + PAGE_MASK @@ expression E; @@ - PAGE_CACHE_ALIGN(E) + PAGE_ALIGN(E) @@ expression E; @@ - page_cache_get(E) + get_page(E) @@ expression E; @@ - page_cache_release(E) + put_page(E) Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: NMichal Hocko <mhocko@suse.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 18 3月, 2016 1 次提交
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由 Kees Cook 提交于
Some callers of strtobool() were passing a pointer to unterminated strings. In preparation of adding multi-character processing to kstrtobool(), update the callers to not pass single-character pointers, and switch to using the new kstrtobool_from_user() helper where possible. Signed-off-by: NKees Cook <keescook@chromium.org> Cc: Amitkumar Karwar <akarwar@marvell.com> Cc: Nishant Sarmukadam <nishants@marvell.com> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: Steve French <sfrench@samba.org> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Joe Perches <joe@perches.com> Cc: Kees Cook <keescook@chromium.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 14 3月, 2016 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 01 3月, 2016 1 次提交
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由 Steve French 提交于
Commit 04b38d60 ("vfs: pull btrfs clone API to vfs layer") added a duplicated line (in cifsfs.c) which causes a sparse compile warning. Signed-off-by: NSteve French <steve.french@primarydata.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
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- 23 1月, 2016 1 次提交
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由 Al Viro 提交于
parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested}, inode_foo(inode) being mutex_foo(&inode->i_mutex). Please, use those for access to ->i_mutex; over the coming cycle ->i_mutex will become rwsem, with ->lookup() done with it held only shared. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 15 1月, 2016 3 次提交
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由 Vladimir Davydov 提交于
Mark those kmem allocations that are known to be easily triggered from userspace as __GFP_ACCOUNT/SLAB_ACCOUNT, which makes them accounted to memcg. For the list, see below: - threadinfo - task_struct - task_delay_info - pid - cred - mm_struct - vm_area_struct and vm_region (nommu) - anon_vma and anon_vma_chain - signal_struct - sighand_struct - fs_struct - files_struct - fdtable and fdtable->full_fds_bits - dentry and external_name - inode for all filesystems. This is the most tedious part, because most filesystems overwrite the alloc_inode method. The list is far from complete, so feel free to add more objects. Nevertheless, it should be close to "account everything" approach and keep most workloads within bounds. Malevolent users will be able to breach the limit, but this was possible even with the former "account everything" approach (simply because it did not account everything in fact). [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NVladimir Davydov <vdavydov@virtuozzo.com> Acked-by: NJohannes Weiner <hannes@cmpxchg.org> Acked-by: NMichal Hocko <mhocko@suse.com> Cc: Tejun Heo <tj@kernel.org> Cc: Greg Thelen <gthelen@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ross Lagerwall 提交于
Currently O_DIRECT is supported with cache=none and cache=strict, but not cache=loose. Add support for using O_DIRECT when mounted with cache=loose. Signed-off-by: NRoss Lagerwall <ross.lagerwall@citrix.com> Signed-off-by: NSteve French <smfrench@gmail.com>
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由 Steve French 提交于
Currently the echo interval is set to 60 seconds using a macro. This setting determines the interval at which echo requests are sent to the server on an idling connection. This setting also affects the time required for a connection to an unresponsive server to timeout. Making this setting a tunable allows users to control the echo interval times as well as control the time after which the connecting to an unresponsive server times out. To set echo interval, pass the echo_interval=n mount option. Version four of the patch. v2: Change MIN and MAX timeout values v3: Remove incorrect comment in cifs_get_tcp_session v4: Fix bug in setting echo_intervalw Signed-off-by: NSachin Prabhu <sprabhu@redhat.com> Acked-by: NShirish Pargaonkar <shirishpargaonkar@gmail.com>
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- 31 12月, 2015 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 09 12月, 2015 2 次提交
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由 Al Viro 提交于
new method: ->get_link(); replacement of ->follow_link(). The differences are: * inode and dentry are passed separately * might be called both in RCU and non-RCU mode; the former is indicated by passing it a NULL dentry. * when called that way it isn't allowed to block and should return ERR_PTR(-ECHILD) if it needs to be called in non-RCU mode. It's a flagday change - the old method is gone, all in-tree instances converted. Conversion isn't hard; said that, so far very few instances do not immediately bail out when called in RCU mode. That'll change in the next commits. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Arnd Bergmann 提交于
The newly introduced cifs_clone_file_range() function produces two harmless compile-time warnings: cifsfs.c: In function 'cifs_clone_file_range': cifsfs.c:963:1: warning: label 'out_unlock' defined but not used [-Wunused-label] cifsfs.c:924:20: warning: unused variable 'src_tcon' [-Wunused-variable] In both cases, removing the extraneous line avoids the warning. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Fixes: c6f2a1e2e5f8 ("vfs: pull btrfs clone API to vfs layer") Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 08 12月, 2015 1 次提交
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由 Christoph Hellwig 提交于
The btrfs clone ioctls are now adopted by other file systems, with NFS and CIFS already having support for them, and XFS being under active development. To avoid growth of various slightly incompatible implementations, add one to the VFS. Note that clones are different from file copies in several ways: - they are atomic vs other writers - they support whole file clones - they support 64-bit legth clones - they do not allow partial success (aka short writes) - clones are expected to be a fast metadata operation Because of that it would be rather cumbersome to try to piggyback them on top of the recent clone_file_range infrastructure. The converse isn't true and the clone_file_range system call could try clone file range as a first attempt to copy, something that further patches will enable. Based on earlier work from Peng Tao. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 09 11月, 2015 1 次提交
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由 Steve French 提交于
FSCTL_SRV_COPYCHUNK_WRITE only requires that the source and target be on the same server (not the same volume or same share), so relax the existing check (which required them to be on the same share). Note that this works to Windows (and presumably most other NAS) but Samba requires that the source and target be on the same share. Moving a file across shares is a common use case and can be very heplful (100x faster). Signed-off-by: NSteve French <steve.french@primarydata.com> Reviewed-by: NDavid Disseldorp <ddiss@samba.org>
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- 04 11月, 2015 1 次提交
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由 Steve French 提交于
Since many servers (Windows clients, and non-clustered servers) do not support persistent handles but do support resilient handles, allow the user to specify a mount option "resilienthandles" in order to get more reliable connections and less chance of data loss (at least when SMB2.1 or later). Default resilient handle timeout (120 seconds to recent Windows server) is used. Reviewed-by: NPavel Shilovsky <pshilovsky@samba.org> Signed-off-by: NSteve French <steve.french@primarydata.com>
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- 03 11月, 2015 1 次提交
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由 Steve French 提交于
Signed-off-by: NSteve French <steve.french@primarydata.com> Reviewed-by: NPavel Shilovsky <pshilovsky@samba.org>
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- 12 9月, 2015 1 次提交
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由 Steve French 提交于
When the user specifies "sec=none" in a cifs mount, we set sec_type as unspecified (and set a flag and the username will be null) rather than setting sectype as "none" so cifs_show_security was not properly displaying it in cifs /proc/mounts entries. Signed-off-by: NSteve French <steve.french@primarydata.com> Reviewed-by: NJeff Layton <jlayton@poochiereds.net>
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- 05 9月, 2015 1 次提交
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由 Kees Cook 提交于
Many file systems that implement the show_options hook fail to correctly escape their output which could lead to unescaped characters (e.g. new lines) leaking into /proc/mounts and /proc/[pid]/mountinfo files. This could lead to confusion, spoofed entries (resulting in things like systemd issuing false d-bus "mount" notifications), and who knows what else. This looks like it would only be the root user stepping on themselves, but it's possible weird things could happen in containers or in other situations with delegated mount privileges. Here's an example using overlay with setuid fusermount trusting the contents of /proc/mounts (via the /etc/mtab symlink). Imagine the use of "sudo" is something more sneaky: $ BASE="ovl" $ MNT="$BASE/mnt" $ LOW="$BASE/lower" $ UP="$BASE/upper" $ WORK="$BASE/work/ 0 0 none /proc fuse.pwn user_id=1000" $ mkdir -p "$LOW" "$UP" "$WORK" $ sudo mount -t overlay -o "lowerdir=$LOW,upperdir=$UP,workdir=$WORK" none /mnt $ cat /proc/mounts none /root/ovl/mnt overlay rw,relatime,lowerdir=ovl/lower,upperdir=ovl/upper,workdir=ovl/work/ 0 0 none /proc fuse.pwn user_id=1000 0 0 $ fusermount -u /proc $ cat /proc/mounts cat: /proc/mounts: No such file or directory This fixes the problem by adding new seq_show_option and seq_show_option_n helpers, and updating the vulnerable show_option handlers to use them as needed. Some, like SELinux, need to be open coded due to unusual existing escape mechanisms. [akpm@linux-foundation.org: add lost chunk, per Kees] [keescook@chromium.org: seq_show_option should be using const parameters] Signed-off-by: NKees Cook <keescook@chromium.org> Acked-by: NSerge Hallyn <serge.hallyn@canonical.com> Acked-by: NJan Kara <jack@suse.com> Acked-by: NPaul Moore <paul@paul-moore.com> Cc: J. R. Okajima <hooanon05g@gmail.com> Signed-off-by: NKees Cook <keescook@chromium.org> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 11 5月, 2015 1 次提交
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由 Nakajima Akira 提交于
Cifs client has problem with reserved chars filename. [BUG1] : several functions handle incorrect value of mapchars - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + cifs_remap(cifs_sb)); [BUG2] : forget to convert reserved chars when creating SymbolicLink. - CIFSUnixCreateSymLink() calls cifs_strtoUTF16 + CIFSUnixCreateSymLink() calls cifsConvertToUTF16() with remap [BUG3] : forget to convert reserved chars when getting SymbolicLink. - CIFSSMBUnixQuerySymLink() calls cifs_strtoUTF16 + CIFSSMBUnixQuerySymLink() calls cifsConvertToUTF16() with remap [BUG4] : /proc/mounts don't show "mapposix" when using mapposix mount option + cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR) + seq_puts(s, ",mapposix"); Reported-by: t.wede@kw-reneg.de Reported-by: NNakajima Akira <nakajima.akira@nttcom.co.jp> Signed-off-by: NNakajima Akira <nakajima.akira@nttcom.co.jp> Signed-off-by: NCarl Schaefer <schaefer@trilug.org> Signed-off-by: NSteve French <smfrench@gmail.com>
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- 16 4月, 2015 1 次提交
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由 David Howells 提交于
that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 12 4月, 2015 1 次提交
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由 Al Viro 提交于
All places outside of core VFS that checked ->read and ->write for being NULL or called the methods directly are gone now, so NULL {read,write} with non-NULL {read,write}_iter will do the right thing in all cases. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 20 11月, 2014 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 08 10月, 2014 1 次提交
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由 Jeff Layton 提交于
In later patches, we're going to add a new lock_manager_operation to finish setting up the lease while still holding the i_lock. To do this, we'll need to pass a little bit of info in the fcntl setlease case (primarily an fasync structure). Plumb the extra pointer into there in advance of that. We declare this pointer as a void ** to make it clear that this is private info, and that the caller isn't required to set this unless the lm_setup specifically requires it. Signed-off-by: NJeff Layton <jlayton@primarydata.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
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- 18 8月, 2014 1 次提交
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由 Steve French 提交于
Implement FALLOC_FL_PUNCH_HOLE (which does not change the file size fortunately so this matches the behavior of the equivalent SMB3 fsctl call) for SMB3 mounts. This allows "fallocate -p" to work. It requires that the server support setting files as sparse (which Windows allows). Signed-off-by: NSteve French <smfrench@gmail.com>
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- 16 8月, 2014 1 次提交
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由 Jeff Layton 提交于
Currently any F_UNLCK request for a lease just gets back -EAGAIN. Allow them to go immediately to generic_setlease instead. Signed-off-by: NJeff Layton <jlayton@primarydata.com> Signed-off-by: NSteve French <smfrench@gmail.com>
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- 08 8月, 2014 1 次提交
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由 Miklos Szeredi 提交于
This flag gives CIFS the ability to support its native rename semantics. Implementation is simple: just bail out before trying to hack around the noreplace semantics. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz> Cc: Steve French <smfrench@gmail.com> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 20 6月, 2014 1 次提交
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由 Jeff Layton 提交于
Before satisfying a read with cache=loose, we should always check that the pagecache is valid before allowing a read to be satisfied out of it. Reported-by: NTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: NJeff Layton <jlayton@poochiereds.net> Signed-off-by: NSteve French <smfrench@gmail.com>
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- 22 5月, 2014 3 次提交
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由 Sachin Prabhu 提交于
When mounting from a Windows 2012R2 server, we hit the following problem: 1) Mount with any of the following versions - 2.0, 2.1 or 3.0 2) unmount 3) Attempt a mount again using a different SMB version >= 2.0. You end up with the following failure: Status code returned 0xc0000203 STATUS_USER_SESSION_DELETED CIFS VFS: Send error in SessSetup = -5 CIFS VFS: cifs_mount failed w/return code = -5 I cannot reproduce this issue using a Windows 2008 R2 server. This appears to be caused because we use the same client guid for the connection on first mount which we then disconnect and attempt to mount again using a different protocol version. By generating a new guid each time a new connection is Negotiated, we avoid hitting this problem. Signed-off-by: NSachin Prabhu <sprabhu@redhat.com> Signed-off-by: NSteve French <smfrench@gmail.com>
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由 Fabian Frederick 提交于
Replace seq_printf where possible Cc: Steve French <sfrench@samba.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NFabian Frederick <fabf@skynet.be> Signed-off-by: NSteve French <smfrench@gmail.com>
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由 Jeff Layton 提交于
In later patches, we'll need to have a bitlock, so go ahead and convert these bools to use atomic bitops instead. Also, clean up the initialization of the flags field. There's no need to unset each bit individually just after it was zeroed on allocation. Signed-off-by: NJeff Layton <jlayton@poochiereds.net> Signed-off-by: NSteve French <smfrench@gmail.com>
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- 07 5月, 2014 3 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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