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2014-01-25btrfs: use generic posix ACL infrastructureChristoph Hellwig1-124/+18
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: make posix_acl_create more usefulChristoph Hellwig1-1/+1
Rename the current posix_acl_created to __posix_acl_create and add a fully featured helper to set up the ACLs on file creation that uses get_acl(). Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: make posix_acl_chmod more usefulChristoph Hellwig1-1/+1
Rename the current posix_acl_chmod to __posix_acl_chmod and add a fully featured ACL chmod helper that uses the ->set_acl inode operation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-11-11Btrfs: fix incorrect inode acl resetFilipe David Borba Manana1-1/+1
When a directory has a default ACL and a subdirectory is created under that directory, btrfs_init_acl() is called when the subdirectory's inode is created to initialize the inode's ACL (inherited from the parent directory) but it was clearing the ACL from the inode after setting it if posix_acl_create() returned success, instead of clearing it only if it returned an error. To reproduce this issue: $ mkfs.btrfs -f /dev/loop0 $ mount /dev/loop0 /mnt $ mkdir /mnt/acl $ setfacl -d --set u::rwx,g::rwx,o::- /mnt/acl $ getfacl /mnt/acl user::rwx group::rwx other::r-x default:user::rwx default:group::rwx default:other::--- $ mkdir /mnt/acl/dir1 $ getfacl /mnt/acl/dir1 user::rwx group::rwx other::--- After unmounting and mounting again the filesystem, fgetacl returned the expected ACL: $ umount /mnt/acl $ mount /dev/loop0 /mnt $ getfacl /mnt/acl/dir1 user::rwx group::rwx other::--- default:user::rwx default:group::rwx default:other::--- Meaning that the underlying xattr was persisted. Reported-by: Giuseppe Fierro <giuseppe@fierro.org> Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2012-12-16Btrfs: skip adding an acl attribute if we don't have toLiu Bo1-0/+2
If the acl can be exactly represented in the traditional file mode permission bits, we don't set another acl attribute. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2012-09-18userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattrEric W. Biederman1-4/+4
- Pass the user namespace the uid and gid values in the xattr are stored in into posix_acl_from_xattr. - Pass the user namespace kuid and kgid values should be converted into when storing uid and gid values in an xattr in posix_acl_to_xattr. - Modify all callers of posix_acl_from_xattr and posix_acl_to_xattr to pass in &init_user_ns. In the short term this change is not strictly needed but it makes the code clearer. In the longer term this change is necessary to be able to mount filesystems outside of the initial user namespace that natively store posix acls in the linux xattr format. Cc: Theodore Tso <tytso@mit.edu> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2012-05-30Btrfs: cache no acl on new inodesJosef Bacik1-0/+4
When running compilebench I noticed we were spending some time looking up acls on new inodes, which shouldn't be happening since there were no acls. This is because when we init acls on the inode after creating them we don't cache the fact there are no acls if there aren't any. Doing this adds a little bit of a bump to my compilebench runs. Thanks, Btrfs: cache no acl on new inodes Signed-off-by: Josef Bacik <josef@redhat.com>
2011-10-20Btrfs: fix return value of btrfs_get_acl()Tsutomu Itoh1-10/+7
In btrfs_get_acl(), when the second __btrfs_getxattr() call fails, acl is not correctly set. Therefore, a wrong value might return to the caller. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
2011-08-02Merge branch 'for-linus' of ↵Linus Torvalds1-17/+0
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (31 commits) Btrfs: don't call writepages from within write_full_page Btrfs: Remove unused variable 'last_index' in file.c Btrfs: clean up for find_first_extent_bit() Btrfs: clean up for wait_extent_bit() Btrfs: clean up for insert_state() Btrfs: remove unused members from struct extent_state Btrfs: clean up code for merging extent maps Btrfs: clean up code for extent_map lookup Btrfs: clean up search_extent_mapping() Btrfs: remove redundant code for dir item lookup Btrfs: make acl functions really no-op if acl is not enabled Btrfs: remove remaining ref-cache code Btrfs: remove a BUG_ON() in btrfs_commit_transaction() Btrfs: use wait_event() Btrfs: check the nodatasum flag when writing compressed files Btrfs: copy string correctly in INO_LOOKUP ioctl Btrfs: don't print the leaf if we had an error btrfs: make btrfs_set_root_node void Btrfs: fix oops while writing data to SSD partitions Btrfs: Protect the readonly flag of block group ... Fix up trivial conflicts (due to acl and writeback cleanups) in - fs/btrfs/acl.c - fs/btrfs/ctree.h - fs/btrfs/extent_io.c
2011-08-01Btrfs: make acl functions really no-op if acl is not enabledLi Zefan1-17/+0
So there's no overhead for something we don't use. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-01switch posix_acl_equiv_mode() to umode_t *Al Viro1-4/+1
... so that &inode->i_mode could be passed to it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-08-01switch posix_acl_create() to umode_t *Al Viro1-4/+1
so we can pass &inode->i_mode to it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-25fs: take the ACL checks to common codeChristoph Hellwig1-17/+1
Replace the ->check_acl method with a ->get_acl method that simply reads an ACL from disk after having a cache miss. This means we can replace the ACL checking boilerplate code with a single implementation in namei.c. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-25kill boilerplates around posix_acl_create_masq()Al Viro1-16/+8
new helper: posix_acl_create(&acl, gfp, mode_p). Replaces acl with modified clone, on failure releases acl and replaces with NULL. Returns 0 or -ve on error. All callers of posix_acl_create_masq() switched. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-25kill boilerplate around posix_acl_chmod_masq()Al Viro1-11/+5
new helper: posix_acl_chmod(&acl, gfp, mode). Replaces acl with modified clone or with NULL if that has failed; returns 0 or -ve on error. All callers of posix_acl_chmod_masq() switched to that - they'd been doing exactly the same thing. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-25vfs: move ACL cache lookup into generic codeLinus Torvalds1-12/+7
This moves logic for checking the cached ACL values from low-level filesystems into generic code. The end result is a streamlined ACL check that doesn't need to load the inode->i_op->check_acl pointer at all for the common cached case. The filesystems also don't need to check for a non-blocking RCU walk case in their acl_check() functions, because that is all handled at a VFS layer. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20->permission() sanitizing: don't pass flags to ->check_acl()Al Viro1-1/+1
not used in the instances anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20->permission() sanitizing: pass MAY_NOT_BLOCK to ->check_acl()Al Viro1-2/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-05-22Merge branch 'cleanups' of git://repo.or.cz/linux-2.6/btrfs-unstable into ↵Chris Mason1-1/+1
inode_numbers Conflicts: fs/btrfs/extent-tree.c fs/btrfs/free-space-cache.c fs/btrfs/inode.c fs/btrfs/tree-log.c Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-05-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds1-2/+3
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: fix FS_IOC_SETFLAGS ioctl Btrfs: fix FS_IOC_GETFLAGS ioctl fs: remove FS_COW_FL Btrfs: fix easily get into ENOSPC in mixed case Prevent oopsing in posix_acl_valid()
2011-05-14Prevent oopsing in posix_acl_valid()Daniel J Blueman1-2/+3
If posix_acl_from_xattr() returns an error code, a negative address is dereferenced causing an oops; fix by checking for error code first. Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com> Reviewed-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-05-02btrfs: unify checking of IS_ERR and nullDavid Sterba1-1/+1
use IS_ERR_OR_NULL when possible, done by this coccinelle script: @ match @ identifier id; @@ ( - BUG_ON(IS_ERR(id) || !id); + BUG_ON(IS_ERR_OR_NULL(id)); | - IS_ERR(id) || !id + IS_ERR_OR_NULL(id) | - !id || IS_ERR(id) + IS_ERR_OR_NULL(id) ) Signed-off-by: David Sterba <dsterba@suse.cz>
2011-04-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds1-4/+5
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (24 commits) Btrfs: fix free space cache leak Btrfs: avoid taking the chunk_mutex in do_chunk_alloc Btrfs end_bio_extent_readpage should look for locked bits Btrfs: don't force chunk allocation in find_free_extent Btrfs: Check validity before setting an acl Btrfs: Fix incorrect inode nlink in btrfs_link() Btrfs: Check if btrfs_next_leaf() returns error in btrfs_real_readdir() Btrfs: Check if btrfs_next_leaf() returns error in btrfs_listxattr() Btrfs: make uncache_state unconditional btrfs: using cached extent_state in set/unlock combinations Btrfs: avoid taking the trans_mutex in btrfs_end_transaction Btrfs: fix subvolume mount by name problem when default mount subvolume is set fix user annotation in ioctl.c Btrfs: check for duplicate iov_base's when doing dio reads btrfs: properly handle overlapping areas in memmove_extent_buffer Btrfs: fix memory leaks in btrfs_new_inode() Btrfs: check for duplicate iov_base's when doing dio reads Btrfs: reuse the extent_map we found when calling btrfs_get_extent Btrfs: do not use async submit for small DIO io's Btrfs: don't split dio bios if we don't have to ...
2011-04-13Btrfs: Check validity before setting an aclMiao Xie1-4/+5
Call posix_acl_valid() to check if an acl is valid or not. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
2011-03-23userns: rename is_owner_or_cap to inode_owner_or_capableSerge E. Hallyn1-1/+1
And give it a kernel-doc comment. [akpm@linux-foundation.org: btrfs changed in linux-next] Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Daniel Lezcano <daniel.lezcano@free.fr> Acked-by: David Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds1-0/+6
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (33 commits) Btrfs: Fix page count calculation btrfs: Drop __exit attribute on btrfs_exit_compress btrfs: cleanup error handling in btrfs_unlink_inode() Btrfs: exclude super blocks when we read in block groups Btrfs: make sure search_bitmap finds something in remove_from_bitmap btrfs: fix return value check of btrfs_start_transaction() btrfs: checking NULL or not in some functions Btrfs: avoid uninit variable warnings in ordered-data.c Btrfs: catch errors from btrfs_sync_log Btrfs: make shrink_delalloc a little friendlier Btrfs: handle no memory properly in prepare_pages Btrfs: do error checking in btrfs_del_csums Btrfs: use the global block reserve if we cannot reserve space Btrfs: do not release more reserved bytes to the global_block_rsv than we need Btrfs: fix check_path_shared so it returns the right value btrfs: check return value of btrfs_start_ioctl_transaction() properly btrfs: fix return value check of btrfs_join_transaction() fs/btrfs/inode.c: Add missing IS_ERR test btrfs: fix missing break in switch phrase btrfs: fix several uncheck memory allocations ...
2011-01-28Merge branch 'bug-fixes' of git://repo.or.cz/linux-btrfs-devel into btrfs-38Chris Mason1-0/+6
2011-01-27Btrfs: Don't return acl info when mounting with noacl optionMiao Xie1-0/+6
Steps to reproduce: # mkfs.btrfs /dev/sda2 # mount /dev/sda2 /mnt # touch /mnt/file0 # setfacl -m 'u:root:x,g::x,o::x' /mnt/file0 # umount /mnt # mount /dev/sda2 -o noacl /mnt # getfacl /mnt/file0 ... user::rw- user:root:--x group::--x mask::--x other::--x The output should be: user::rw- group::--x other::--x Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
2011-01-17Merge branch 'for-linus' of ↵Linus Torvalds1-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (25 commits) Btrfs: forced readonly mounts on errors btrfs: Require CAP_SYS_ADMIN for filesystem rebalance Btrfs: don't warn if we get ENOSPC in btrfs_block_rsv_check btrfs: Fix memory leak in btrfs_read_fs_root_no_radix() btrfs: check NULL or not btrfs: Don't pass NULL ptr to func that may deref it. btrfs: mount failure return value fix btrfs: Mem leak in btrfs_get_acl() btrfs: fix wrong free space information of btrfs btrfs: make the chunk allocator utilize the devices better btrfs: restructure find_free_dev_extent() btrfs: fix wrong calculation of stripe size btrfs: try to reclaim some space when chunk allocation fails btrfs: fix wrong data space statistics fs/btrfs: Fix build of ctree Btrfs: fix off by one while setting block groups readonly Btrfs: Add BTRFS_IOC_SUBVOL_GETFLAGS/SETFLAGS ioctls Btrfs: Add readonly snapshots support Btrfs: Refactor btrfs_ioctl_snap_create() btrfs: Extract duplicate decompress code ...
2011-01-16btrfs: Mem leak in btrfs_get_acl()Jesper Juhl1-1/+3
It seems to me that we leak the memory allocated to 'value' in btrfs_get_acl() if the call to posix_acl_from_xattr() fails. Here's a patch that attempts to correct that problem. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-01-07btrfs: provide simple rcu-walk ACL implementationNick Piggin1-9/+12
This simple implementation just checks for no ACLs on the inode, and if so, then the rcu-walk may proceed, otherwise fail it. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07fs: provide rcu-walk aware permission i_opsNick Piggin1-2/+4
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2010-06-11Merge branch 'for-linus' of ↵Linus Torvalds1-0/+8
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: The file argument for fsync() is never null Btrfs: handle ERR_PTR from posix_acl_from_xattr() Btrfs: avoid BUG when dropping root and reference in same transaction Btrfs: prohibit a operation of changing acl's mask when noacl mount option used Btrfs: should add a permission check for setfacl Btrfs: btrfs_lookup_dir_item() can return ERR_PTR Btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs Btrfs: unwind after btrfs_start_transaction() errors Btrfs: btrfs_iget() returns ERR_PTR Btrfs: handle kzalloc() failure in open_ctree() Btrfs: handle error returns from btrfs_lookup_dir_item() Btrfs: Fix BUG_ON for fs converted from extN Btrfs: Fix null dereference in relocation.c Btrfs: fix remap_file_pages error Btrfs: uninitialized data is check_path_shared() Btrfs: fix fallocate regression Btrfs: fix loop device on top of btrfs
2010-06-11Btrfs: handle ERR_PTR from posix_acl_from_xattr()Dan Carpenter1-0/+2
posix_acl_from_xattr() returns both ERR_PTRs and null, but it's OK to pass null values to set_cached_acl() Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-06-11Btrfs: prohibit a operation of changing acl's mask when noacl mount option usedShi Weihua1-0/+3
when used Posix File System Test Suite(pjd-fstest) to test btrfs, some cases about setfacl failed when noacl mount option used. I simplified used commands in pjd-fstest, and the following steps can reproduce it. ------------------------ # cd btrfs-part/ # mkdir aaa # setfacl -m m::rw aaa <- successed, but not expected by pjd-fstest. ------------------------ I checked ext3, a warning message occured, like as: setfacl: aaa/: Operation not supported Certainly, it's expected by pjd-fstest. So, i compared acl.c of btrfs and ext3. Based on that, a patch created. Fortunately, it works. Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-06-11Btrfs: should add a permission check for setfaclShi Weihua1-0/+3
On btrfs, do the following ------------------ # su user1 # cd btrfs-part/ # touch aaa # getfacl aaa # file: aaa # owner: user1 # group: user1 user::rw- group::rw- other::r-- # su user2 # cd btrfs-part/ # setfacl -m u::rwx aaa # getfacl aaa # file: aaa # owner: user1 # group: user1 user::rwx <- successed to setfacl group::rw- other::r-- ------------------ but we should prohibit it that user2 changing user1's acl. In fact, on ext3 and other fs, a message occurs: setfacl: aaa: Operation not permitted This patch fixed it. Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-05-21btrfs: constify xattr_handlerStephen Hemminger1-2/+2
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo1-0/+1
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-01-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds1-0/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: check total number of devices when removing missing Btrfs: check return value of open_bdev_exclusive properly Btrfs: do not mark the chunk as readonly if in degraded mode Btrfs: run orphan cleanup on default fs root Btrfs: fix a memory leak in btrfs_init_acl Btrfs: Use correct values when updating inode i_size on fallocate Btrfs: remove tree_search() in extent_map.c Btrfs: Add mount -o compress-force
2010-01-28Btrfs: fix a memory leak in btrfs_init_aclYang Hongyang1-0/+1
In btrfs_init_acl() cloned acl is not released Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-01-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds1-5/+7
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: fix possible panic on unmount Btrfs: deal with NULL acl sent to btrfs_set_acl Btrfs: fix regression in orphan cleanup Btrfs: Fix race in btrfs_mark_extent_written Btrfs, fix memory leaks in error paths Btrfs: align offsets for btrfs_ordered_update_i_size btrfs: fix missing last-entry in readdir(3)
2010-01-17Btrfs: deal with NULL acl sent to btrfs_set_aclChris Mason1-5/+7
It is legal for btrfs_set_acl to be sent a NULL acl. This makes sure we don't dereference it. A similar patch was sent by Johannes Hirte <johannes.hirte@fem.tu-ilmenau.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Merge branch btrfs-master into for-linusChris Mason1-10/+13
Conflicts: fs/btrfs/acl.c
2009-12-17Btrfs: Pass transaction handle to security and ACL initialization functionsYan, Zheng1-10/+13
Pass transaction handle down to security and ACL initialization functions, so we can avoid starting nested transactions Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-16sanitize xattr handler prototypesChristoph Hellwig1-35/+12
Add a flags argument to struct xattr_handler and pass it to all xattr handler methods. This allows using the same methods for multiple handlers, e.g. for the ACL methods which perform exactly the same action for the access and default ACLs, just using a different underlying attribute. With a little more groundwork it'll also allow sharing the methods for the regular user/trusted/secure handlers in extN, ocfs2 and jffs2 like it's already done for xfs in this patch. Also change the inode argument to the handlers to a dentry to allow using the handlers mechnism for filesystems that require it later, e.g. cifs. [with GFS2 bits updated by Steven Whitehouse <swhiteho@redhat.com>] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-10-13Btrfs: fix btrfs acl #ifdef checksChris Mason1-3/+3
The btrfs acl code was #ifdefing for a define that didn't exist. This correctly matches it to the values used by the Kconfig file. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-09-29Btrfs: Use CONFIG_BTRFS_POSIX_ACL to enable ACL codeChris Ball1-3/+3
We've already defined CONFIG_BTRFS_POSIX_ACL in Kconfig, but we're currently not using it and are testing CONFIG_FS_POSIX_ACL instead. CONFIG_FS_POSIX_ACL states "Never use this symbol for ifdefs". Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-06-24helpers for acl caching + switch to thoseAl Viro1-35/+9
helpers: get_cached_acl(inode, type), set_cached_acl(inode, type, acl), forget_cached_acl(inode, type). ubifs/xattr.c needed includes reordered, the rest is a plain switchover. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24switch btrfs to inode->i_aclAl Viro1-7/+7
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-10Fix btrfs when ACLs are configured outAl Viro1-5/+0
... otherwise generic_permission() will allow *anything* for all files you don't own and that have some group permissions. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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