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2019-04-29btrfs: cleanup btrfs_setxattr_trans and drop transaction parameterAnand Jain1-1/+1
Previous patch made sure that btrfs_setxattr_trans() is called only when transaction NULL. Clean up btrfs_setxattr_trans() and drop the parameter. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2019-04-29btrfs: split btrfs_setxattr calls regarding transactionAnand Jain1-1/+5
When the caller has already created the transaction handle, btrfs_setxattr() will use it. Also adds assert in btrfs_setxattr(). Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2019-04-29btrfs: rename btrfs_setxattr to btrfs_setxattr_transAnand Jain1-1/+1
Rename btrfs_setxattr() to btrfs_setxattr_trans(), so that do_setxattr() can be renamed to btrfs_setxattr(). Preparatory patch, no functional changes. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2019-02-25Btrfs: setup a nofs context for memory allocation at __btrfs_set_aclFilipe Manana1-0/+9
We are holding a transaction handle when setting an acl, therefore we can not allocate the xattr value buffer using GFP_KERNEL, as we could deadlock if reclaim is triggered by the allocation, therefore setup a nofs context. Fixes: 39a27ec1004e8 ("btrfs: use GFP_KERNEL for xattr and acl allocations") CC: stable@vger.kernel.org # 4.9+ Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-08-06btrfs: remove unnecessary curly braces in btrfs_get_aclChengguang Xu1-4/+3
It's only coding style fix not functinal change. When if/else has only one statement then the braces are not needed. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-08-06btrfs: avoid error code override in btrfs_get_aclChengguang Xu1-1/+1
It's not good to override the error code when failing from btrfs_getxattr() in btrfs_get_acl() because it hides the real reason of the failure. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-08-06btrfs: remove unnecessary -ERANGE check in btrfs_get_aclChengguang Xu1-1/+1
There is no chance to get into -ERANGE error condition because we first call btrfs_getxattr to get the length of the attribute, then we do a subsequent call with the size from the first call. Between the 2 calls the size shouldn't change. So remove the unnecessary -ERANGE error check. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-08-06btrfs: replace empty string with NULL when getting attribute length in ↵Chengguang Xu1-1/+1
btrfs_get_acl In btrfs_get_acl() the first call of btr_getxattr() is for getting the length of attribute, the value buffer is never used in this case. So it's better to replace empty string with NULL. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-08-06btrfs: return error instead of crash when detecting unexpected type in ↵Chengguang Xu1-1/+1
btrfs_get_acl The caller of btrfs_get_acl() checks error condition so there is no impact from this change. In practice there is no chance to get into default case of switch statement because VFS has already checked the type. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-04-12btrfs: replace GPL boilerplate by SPDX -- sourcesDavid Sterba1-14/+1
Remove GPL boilerplate text (long, short, one-line) and keep the rest, ie. personal, company or original source copyright statements. Add the SPDX header. Signed-off-by: David Sterba <dsterba@suse.com>
2018-03-31btrfs: remove stale comments about fs_mutexDavid Sterba1-8/+0
The fs_mutex has been killed in 2008, a213501153fd66e2 ("Btrfs: Replace the big fs_mutex with a collection of other locks"), still remembered in some comments. We don't have any extra needs for locking in the ACL handlers. Signed-off-by: David Sterba <dsterba@suse.com>
2018-03-26btrfs: drop underscores from exported xattr functionsDavid Sterba1-3/+3
Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-08-21btrfs: preserve i_mode if __btrfs_set_acl() failsErnesto A. Fernández1-1/+5
When changing a file's acl mask, btrfs_set_acl() will first set the group bits of i_mode to the value of the mask, and only then set the actual extended attribute representing the new acl. If the second part fails (due to lack of space, for example) and the file had no acl attribute to begin with, the system will from now on assume that the mask permission bits are actual group permission bits, potentially granting access to the wrong users. Prevent this by restoring the original mode bits if __btrfs_set_acl fails. Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-06-29btrfs: Don't clear SGID when inheriting ACLsJan Kara1-6/+7
When new directory 'DIR1' is created in a directory 'DIR0' with SGID bit set, DIR1 is expected to have SGID bit set (and owning group equal to the owning group of 'DIR0'). However when 'DIR0' also has some default ACLs that 'DIR1' inherits, setting these ACLs will result in SGID bit on 'DIR1' to get cleared if user is not member of the owning group. Fix the problem by moving posix_acl_update_mode() out of __btrfs_set_acl() into btrfs_set_acl(). That way the function will not be called when inheriting ACLs which is what we want as it prevents SGID bit clearing and the mode has been properly set by posix_acl_create() anyway. Fixes: 073931017b49d9458aa351605b43a7e34598caef CC: stable@vger.kernel.org CC: linux-btrfs@vger.kernel.org CC: David Sterba <dsterba@suse.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: David Sterba <dsterba@suse.com>
2016-09-22posix_acl: Clear SGID bit when setting file permissionsJan Kara1-4/+2
When file permissions are modified via chmod(2) and the user is not in the owning group or capable of CAP_FSETID, the setgid bit is cleared in inode_change_ok(). Setting a POSIX ACL via setxattr(2) sets the file permissions as well as the new ACL, but doesn't clear the setgid bit in a similar way; this allows to bypass the check in chmod(2). Fix that. References: CVE-2016-7097 Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2016-07-26btrfs: Replace -ENOENT by -ERANGE in btrfs_get_acl()Salah Triki1-2/+1
size contains the value returned by posix_acl_from_xattr(), which returns -ERANGE, -ENODATA, zero, or an integer greater than zero. So replace -ENOENT by -ERANGE. Signed-off-by: Salah Triki <salah.triki@gmail.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-03-31posix_acl: Inode acl caching fixesAndreas Gruenbacher1-3/+0
When get_acl() is called for an inode whose ACL is not cached yet, the get_acl inode operation is called to fetch the ACL from the filesystem. The inode operation is responsible for updating the cached acl with set_cached_acl(). This is done without locking at the VFS level, so another task can call set_cached_acl() or forget_cached_acl() before the get_acl inode operation gets to calling set_cached_acl(), and then get_acl's call to set_cached_acl() results in caching an outdate ACL. Prevent this from happening by setting the cached ACL pointer to a task-specific sentinel value before calling the get_acl inode operation. Move the responsibility for updating the cached ACL from the get_acl inode operations to get_acl(). There, only set the cached ACL if the sentinel value hasn't changed. The sentinel values are chosen to have odd values. Likewise, the value of ACL_NOT_CACHED is odd. In contrast, ACL object pointers always have an even value (ACLs are aligned in memory). This allows to distinguish uncached ACLs values from ACL objects. In addition, switch from guarding inode->i_acl and inode->i_default_acl upates by the inode->i_lock spinlock to using xchg() and cmpxchg(). Filesystems that do not want ACLs returned from their get_acl inode operations to be cached must call forget_cached_acl() to prevent the VFS from doing so. (Patch written by Al Viro and Andreas Gruenbacher.) Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-01-18Merge branch 'for-linus-4.5' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs updates from Chris Mason: "This has our usual assortment of fixes and cleanups, but the biggest change included is Omar Sandoval's free space tree. It's not the default yet, mounting -o space_cache=v2 enables it and sets a readonly compat bit. The tree can actually be deleted and regenerated if there are any problems, but it has held up really well in testing so far. For very large filesystems (30T+) our existing free space caching code can end up taking a huge amount of time during commits. The new tree based code is faster and less work overall to update as the commit progresses. Omar worked on this during the summer and we'll hammer on it in production here at FB over the next few months" * 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (73 commits) Btrfs: fix fitrim discarding device area reserved for boot loader's use Btrfs: Check metadata redundancy on balance btrfs: statfs: report zero available if metadata are exhausted btrfs: preallocate path for snapshot creation at ioctl time btrfs: allocate root item at snapshot ioctl time btrfs: do an allocation earlier during snapshot creation btrfs: use smaller type for btrfs_path locks btrfs: use smaller type for btrfs_path lowest_level btrfs: use smaller type for btrfs_path reada btrfs: cleanup, use enum values for btrfs_path reada btrfs: constify static arrays btrfs: constify remaining structs with function pointers btrfs tests: replace whole ops structure for free space tests btrfs: use list_for_each_entry* in backref.c btrfs: use list_for_each_entry_safe in free-space-cache.c btrfs: use list_for_each_entry* in check-integrity.c Btrfs: use linux/sizes.h to represent constants btrfs: cleanup, remove stray return statements btrfs: zero out delayed node upon allocation btrfs: pass proper enum type to start_transaction() ...
2015-12-06posix acls: Remove duplicate xattr name definitionsAndreas Gruenbacher1-4/+4
Remove POSIX_ACL_XATTR_{ACCESS,DEFAULT} and GFS2_POSIX_ACL_{ACCESS,DEFAULT} and replace them with the definitions in <include/uapi/linux/xattr.h>. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: James Morris <james.l.morris@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-12-03btrfs: use GFP_KERNEL for xattr and acl allocationsDavid Sterba1-2/+2
We don't have to use GFP_NOFS in context of ACL or XATTR actions, not possible to loop through the allocator and it's safe to fail with ENOMEM. Signed-off-by: David Sterba <dsterba@suse.com>
2014-06-09btrfs: remove useless ACL checkZhangZhen1-7/+0
posix_acl_xattr_set() already does the check, and it's the only way to feed in an ACL from userspace. So the check here is useless, remove it. Signed-off-by: zhang zhen <zhenzhang.zhang@huawei.com> Signed-off-by: Chris Mason <clm@fb.com>
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 ...
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