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2015-02-10ocfs2: xattr: remove unused functionRickard Strandqvist1-10/+0
Remove ocfs2_xattr_bucket_get_val() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10ocfs2: Fix xattr check in ocfs2_get_xattr_nolock()Jan Kara1-1/+1
ocfs2_get_xattr_nolock() checks whether inode has any extended attributes (OCFS2_HAS_XATTR_FL). If not, it just sets 'ret' to -ENODATA but continues with checking inline and external attributes anyway (which is pointless although it does not harm). Just return immediately when we know there are no extended attributes in the inode. Coverity id: 1226906. Signed-off-by: Jan Kara <jack@suse.cz> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03ocfs2: pass "new" parameter to ocfs2_init_xattr_bucketWengang Wang1-8/+15
This patch fixes the following crash: kernel BUG at fs/ocfs2/uptodate.c:530! Modules linked in: ocfs2(F) ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue configfs bridge xen_pciback xen_netback xen_blkback xen_gntalloc xen_gntdev xen_evtchn xenfs xen_privcmd sunrpc 8021q garp stp llc bonding be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi iTCO_wdt iTCO_vendor_support dcdbas coretemp freq_table mperf microcode pcspkr serio_raw bnx2 lpc_ich mfd_core i5k_amb i5000_edac edac_core e1000e sg shpchp ext4(F) jbd2(F) mbcache(F) dm_round_robin(F) sr_mod(F) cdrom(F) usb_storage(F) sd_mod(F) crc_t10dif(F) pata_acpi(F) ata_generic(F) ata_piix(F) mptsas(F) mptscsih(F) mptbase(F) scsi_transport_sas(F) radeon(F) ttm(F) drm_kms_helper(F) drm(F) hwmon(F) i2c_algo_bit(F) i2c_core(F) dm_multipath(F) dm_mirror(F) dm_region_hash(F) dm_log(F) dm_mod(F) CPU 5 Pid: 21303, comm: xattr-test Tainted: GF W 3.8.13-30.el6uek.x86_64 #2 Dell Inc. PowerEdge 1950/0M788G RIP: ocfs2_set_new_buffer_uptodate+0x51/0x60 [ocfs2] Process xattr-test (pid: 21303, threadinfo ffff880017aca000, task ffff880016a2c480) Call Trace: ocfs2_init_xattr_bucket+0x8a/0x120 [ocfs2] ocfs2_cp_xattr_bucket+0xbb/0x1b0 [ocfs2] ocfs2_extend_xattr_bucket+0x20a/0x2f0 [ocfs2] ocfs2_add_new_xattr_bucket+0x23e/0x4b0 [ocfs2] ocfs2_xattr_set_entry_index_block+0x13c/0x3d0 [ocfs2] ocfs2_xattr_block_set+0xf9/0x220 [ocfs2] __ocfs2_xattr_set_handle+0x118/0x710 [ocfs2] ocfs2_xattr_set+0x691/0x880 [ocfs2] ocfs2_xattr_user_set+0x46/0x50 [ocfs2] generic_setxattr+0x96/0xa0 __vfs_setxattr_noperm+0x7b/0x170 vfs_setxattr+0xbc/0xc0 setxattr+0xde/0x230 sys_fsetxattr+0xc6/0xf0 system_call_fastpath+0x16/0x1b Code: 41 80 0c 24 01 48 89 df e8 7d f0 ff ff 4c 89 e6 48 89 df e8 a2 fe ff ff 48 89 df e8 3a f0 ff ff 48 8b 1c 24 4c 8b 64 24 08 c9 c3 <0f> 0b eb fe 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 66 66 RIP ocfs2_set_new_buffer_uptodate+0x51/0x60 [ocfs2] It hit the BUG_ON() in ocfs2_set_new_buffer_uptodate(): void ocfs2_set_new_buffer_uptodate(struct ocfs2_caching_info *ci, struct buffer_head *bh) { /* This should definitely *not* exist in our cache */ if (ocfs2_buffer_cached(ci, bh)) printk(KERN_ERR "bh->b_blocknr: %lu @ %p\n", bh->b_blocknr, bh); BUG_ON(ocfs2_buffer_cached(ci, bh)); set_buffer_uptodate(bh); ocfs2_metadata_cache_io_lock(ci); ocfs2_set_buffer_uptodate(ci, bh); ocfs2_metadata_cache_io_unlock(ci); } The problem here is: We cached a block, but the buffer_head got reused. When we are to pick up this block again, a new buffer_head created with UPTODATE flag cleared. ocfs2_buffer_uptodate() returned false since no UPTODATE is set on the buffer_head. so we set this block to cache as a NEW block, then it failed at asserting block is not in cache. The fix is to add a new parameter indicating the bucket is a new allocated or not to ocfs2_init_xattr_bucket(). ocfs2_init_xattr_bucket() assert block not cached accordingly. Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joe Jin <joe.jin@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03ocfs2: call ocfs2_update_inode_fsync_trans when updating any inodeDarrick J. Wong1-0/+3
Ensure that ocfs2_update_inode_fsync_trans() is called any time we touch an inode in a given transaction. This is a follow-on to the previous patch to reduce lock contention and deadlocking during an fsync operation. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Wengang <wen.gang.wang@oracle.com> Cc: Greg Marsden <greg.marsden@oracle.com> Cc: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03ocfs2: allow for more than one data extent when creating xattrTariq Saeed1-1/+8
Orabug: 18108070 ocfs2_xattr_extend_allocation() hits panic when creating xattr during data extent alloc phase. The problem occurs if due to local alloc fragmentation, clusters are spread over multiple extents. In this case ocfs2_add_clusters_in_btree() finds no space to store more than one extent record and therefore fails returning RESTART_META. The situation is anticipated for xattr update case but not xattr create case. This fix simply ports that code to create case. Signed-off-by: Tariq Saeed <tariq.x.saeed@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-25ocfs2: use generic posix ACL infrastructureChristoph Hellwig1-9/+12
This contains some major refactoring for the create path so that inodes are created with the right mode to start with instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-11-13ocfs2: add necessary check in case sb_getblk() failsRui Xiang1-0/+6
sb_getblk() may return an err, so add a check for bh. [joseph.qi@huawei.com: also add a check after calling sb_getblk() in ocfs2_create_xattr_block()] Signed-off-by: Rui Xiang <rui.xiang@huawei.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13ocfs2: return ENOMEM when sb_getblk() failsRui Xiang1-1/+1
The only reason for sb_getblk() failing is if it can't allocate the buffer_head. So return ENOMEM instead when it fails. [joseph.qi@huawei.com: ocfs2_symlink_get_block() and ocfs2_read_blocks_sync() and ocfs2_read_blocks() need the same change] Signed-off-by: Rui Xiang <rui.xiang@huawei.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13fs/ocfs2: remove unnecessary variable bits_wanted from ocfs2_calc_extend_creditsGoldwyn Rodrigues1-13/+7
Code cleanup to remove unnecessary variable passed but never used to ocfs2_calc_extend_credits. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11ocfs2: fix possible double free in ocfs2_reflink_xattr_recJoseph Qi1-1/+1
In ocfs2_reflink_xattr_rec(), meta_ac and data_ac are allocated by calling ocfs2_lock_reflink_xattr_rec_allocators(). Once an error occurs when allocating *data_ac, it frees *meta_ac which is allocated before. Here it mistakenly sets meta_ac to NULL but *meta_ac. Then ocfs2_reflink_xattr_rec() will try to free meta_ac again which is already invalid. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11ocfs2: free meta_ac and data_ac when ocfs2_start_trans fails in ↵Younger Liu1-2/+3
ocfs2_xattr_set() In ocfs2_xattr_set(), if ocfs2_start_trans failed, meta_ac and data_ac should be free. Otherwise, It would lead to a memory leak. Signed-off-by: Younger Liu <younger.liu@huawei.com> Cc: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11ocfs2: add the missing return value check of ocfs2_xattr_get_clustersJoseph Qi1-0/+4
In ocfs2_xattr_value_attach_refcount(), if error occurs when calling ocfs2_xattr_get_clusters(), it will go with unexpected behavior since local variables p_cluster, num_clusters and ext_flags are declared without initialization. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Acked-by: Jie Liu <jeff.liu@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03ocfs2: xattr: fix inlined xattr reflinkJunxiao Bi1-0/+10
Inlined xattr shared free space of inode block with inlined data or data extent record, so the size of the later two should be adjusted when inlined xattr is enabled. See ocfs2_xattr_ibody_init(). But this isn't done well when reflink. For inode with inlined data, its max inlined data size is adjusted in ocfs2_duplicate_inline_data(), no problem. But for inode with data extent record, its record count isn't adjusted. Fix it, or data extent record and inlined xattr may overwrite each other, then cause data corruption or xattr failure. One panic caused by this bug in our test environment is the following: kernel BUG at fs/ocfs2/xattr.c:1435! invalid opcode: 0000 [#1] SMP Pid: 10871, comm: multi_reflink_t Not tainted 2.6.39-300.17.1.el5uek #1 RIP: ocfs2_xa_offset_pointer+0x17/0x20 [ocfs2] RSP: e02b:ffff88007a587948 EFLAGS: 00010283 RAX: 0000000000000000 RBX: 0000000000000010 RCX: 00000000000051e4 RDX: ffff880057092060 RSI: 0000000000000f80 RDI: ffff88007a587a68 RBP: ffff88007a587948 R08: 00000000000062f4 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000010 R13: ffff88007a587a68 R14: 0000000000000001 R15: ffff88007a587c68 FS: 00007fccff7f06e0(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00000000015cf000 CR3: 000000007aa76000 CR4: 0000000000000660 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process multi_reflink_t Call Trace: ocfs2_xa_reuse_entry+0x60/0x280 [ocfs2] ocfs2_xa_prepare_entry+0x17e/0x2a0 [ocfs2] ocfs2_xa_set+0xcc/0x250 [ocfs2] ocfs2_xattr_ibody_set+0x98/0x230 [ocfs2] __ocfs2_xattr_set_handle+0x4f/0x700 [ocfs2] ocfs2_xattr_set+0x6c6/0x890 [ocfs2] ocfs2_xattr_user_set+0x46/0x50 [ocfs2] generic_setxattr+0x70/0x90 __vfs_setxattr_noperm+0x80/0x1a0 vfs_setxattr+0xa9/0xb0 setxattr+0xc3/0x120 sys_fsetxattr+0xa8/0xd0 system_call_fastpath+0x16/0x1b Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Acked-by: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Sunil Mushran <sunil.mushran@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03ocfs2: xattr: remove useless free space checkingJunxiao Bi1-8/+0
Free space checking will be done in ocfs2_xattr_ibody_init(). So remove here. [akpm@linux-foundation.org: remove unused local] Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Acked-by: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27ocfs2: fix ocfs2_init_security_and_acl() to initialize acl correctlyJeff Liu1-1/+1
We need to re-initialize the security for a new reflinked inode with its parent dirs if it isn't specified to be preserved for ocfs2_reflink(). However, the code logic is broken at ocfs2_init_security_and_acl() although ocfs2_init_security_get() succeed. As a result, ocfs2_acl_init() does not involked and therefore the default ACL of parent dir was missing on the new inode. Note this was introduced by 9d8f13ba3 ("security: new security_inode_init_security API adds function callback") To reproduce: set default ACL for the parent dir(ocfs2 in this case): $ setfacl -m default:user:jeff:rwx ../ocfs2/ $ getfacl ../ocfs2/ # file: ../ocfs2/ # owner: jeff # group: jeff user::rwx group::r-x other::r-x default:user::rwx default:user:jeff:rwx default:group::r-x default:mask::rwx default:other::r-x $ touch a $ getfacl a # file: a # owner: jeff # group: jeff user::rw- group::rw- other::r-- Before patching, create reflink file b from a, the user default ACL entry(user:jeff:rwx)was missing: $ ./ocfs2_reflink a b $ getfacl b # file: b # owner: jeff # group: jeff user::rw- group::rw- other::r-- In this case, the end user can also observed an error message at syslog: (ocfs2_reflink,3229,2):ocfs2_init_security_and_acl:7193 ERROR: status = 0 After applying this patch, create reflink file c from a: $ ./ocfs2_reflink a c $ getfacl c # file: c # owner: jeff # group: jeff user::rw- user:jeff:rwx #effective:rw- group::r-x #effective:r-- mask::rw- other::r-- Test program: /* Usage: reflink <source> <dest> */ #include <stdio.h> #include <stdint.h> #include <stdbool.h> #include <string.h> #include <errno.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <sys/ioctl.h> static int reflink_file(char const *src_name, char const *dst_name, bool preserve_attrs) { int fd; #ifndef REFLINK_ATTR_NONE # define REFLINK_ATTR_NONE 0 #endif #ifndef REFLINK_ATTR_PRESERVE # define REFLINK_ATTR_PRESERVE 1 #endif #ifndef OCFS2_IOC_REFLINK struct reflink_arguments { uint64_t old_path; uint64_t new_path; uint64_t preserve; }; # define OCFS2_IOC_REFLINK _IOW ('o', 4, struct reflink_arguments) #endif struct reflink_arguments args = { .old_path = (unsigned long) src_name, .new_path = (unsigned long) dst_name, .preserve = preserve_attrs ? REFLINK_ATTR_PRESERVE : REFLINK_ATTR_NONE, }; fd = open(src_name, O_RDONLY); if (fd < 0) { fprintf(stderr, "Failed to open %s: %s\n", src_name, strerror(errno)); return -1; } if (ioctl(fd, OCFS2_IOC_REFLINK, &args) < 0) { fprintf(stderr, "Failed to reflink %s to %s: %s\n", src_name, dst_name, strerror(errno)); return -1; } } int main(int argc, char *argv[]) { if (argc != 3) { fprintf(stdout, "Usage: %s source dest\n", argv[0]); return 1; } return reflink_file(argv[1], argv[2], 0); } Signed-off-by: Jie Liu <jeff.liu@oracle.com> Reviewed-by: Tao Ma <boyu.mt@taobao.com> Cc: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-03ocfs2: propagate umode_tAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-12-01Merge branch 'upstream-linus' of ↵Linus Torvalds1-4/+6
git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: (31 commits) ocfs2: avoid unaligned access to dqc_bitmap ocfs2: Use filemap_write_and_wait() instead of write_inode_now() ocfs2: honor O_(D)SYNC flag in fallocate ocfs2: Add a missing journal credit in ocfs2_link_credits() -v2 ocfs2: send correct UUID to cleancache initialization ocfs2: Commit transactions in error cases -v2 ocfs2: make direntry invalid when deleting it fs/ocfs2/dlm/dlmlock.c: free kmem_cache_zalloc'd data using kmem_cache_free ocfs2: Avoid livelock in ocfs2_readpage() ocfs2: serialize unaligned aio ocfs2: Implement llseek() ocfs2: Fix ocfs2_page_mkwrite() ocfs2: Add comment about orphan scanning ocfs2: Clean up messages in the fs ocfs2/cluster: Cluster up now includes network connections too ocfs2/cluster: Add new function o2net_fill_node_map() ocfs2/cluster: Fix output in file elapsed_time_in_ms ocfs2/dlm: dlmlock_remote() needs to account for remastery ocfs2/dlm: Take inflight reference count for remotely mastered resources too ocfs2/dlm: Cleanup dlm_wait_for_node_death() and dlm_wait_for_node_recovery() ...
2011-11-17ocfs2: Commit transactions in error cases -v2Wengang Wang1-4/+6
There are three cases found that in error cases, journal transactions are not committed nor aborted. We should take care of these case by committing the transactions. Otherwise, there would left a journal handle which will lead to , in same process context, the comming ocfs2_start_trans() gets wrong credits. Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Signed-off-by: Joel Becker <jlbec@evilplan.org>
2011-07-18security: new security_inode_init_security API adds function callbackMimi Zohar1-14/+24
This patch changes the security_inode_init_security API by adding a filesystem specific callback to write security extended attributes. This change is in preparation for supporting the initialization of multiple LSM xattrs and the EVM xattr. Initially the callback function walks an array of xattrs, writing each xattr separately, but could be optimized to write multiple xattrs at once. For existing security_inode_init_security() calls, which have not yet been converted to use the new callback function, such as those in reiserfs and ocfs2, this patch defines security_old_inode_init_security(). Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
2011-03-31Fix common misspellingsLucas De Marchi1-2/+2
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-28Merge branch 'upstream-linus' of ↵Linus Torvalds1-80/+75
git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: (39 commits) Treat writes as new when holes span across page boundaries fs,ocfs2: Move o2net_get_func_run_time under CONFIG_OCFS2_FS_STATS. ocfs2/dlm: Move kmalloc() outside the spinlock ocfs2: Make the left masklogs compat. ocfs2: Remove masklog ML_AIO. ocfs2: Remove masklog ML_UPTODATE. ocfs2: Remove masklog ML_BH_IO. ocfs2: Remove masklog ML_JOURNAL. ocfs2: Remove masklog ML_EXPORT. ocfs2: Remove masklog ML_DCACHE. ocfs2: Remove masklog ML_NAMEI. ocfs2: Remove mlog(0) from fs/ocfs2/dir.c ocfs2: remove NAMEI from symlink.c ocfs2: Remove masklog ML_QUOTA. ocfs2: Remove mlog(0) from quota_local.c. ocfs2: Remove masklog ML_RESERVATIONS. ocfs2: Remove masklog ML_XATTR. ocfs2: Remove masklog ML_SUPER. ocfs2: Remove mlog(0) from fs/ocfs2/heartbeat.c ocfs2: Remove mlog(0) from fs/ocfs2/slot_map.c ... Fix up trivial conflict in fs/ocfs2/super.c
2011-02-23ocfs2: Remove masklog ML_XATTR.Tao Ma1-78/+75
Remove mlog(0) from fs/ocfs2/xattr.c and the masklog ML_XATTR. Signed-off-by: Tao Ma <boyu.mt@taobao.com>
2011-03-07ocfs2: Remove EXIT from masklog.Tao Ma1-2/+0
mlog_exit is used to record the exit status of a function. But because it is added in so many functions, if we enable it, the system logs get filled up quickly and cause too much I/O. So actually no one can open it for a production system or even for a test. This patch just try to remove it or change it. So: 1. if all the error paths already use mlog_errno, it is just removed. Otherwise, it will be replaced by mlog_errno. 2. if it is used to print some return value, it is replaced with mlog(0,...). mlog_exit_ptr is changed to mlog(0. All those mlog(0,...) will be replaced with trace events later. Signed-off-by: Tao Ma <boyu.mt@taobao.com>
2011-02-21ocfs2: Remove ENTRY from masklog.Tao Ma1-2/+2
ENTRY is used to record the entry of a function. But because it is added in so many functions, if we enable it, the system logs get filled up quickly and cause too much I/O. So actually no one can open it for a production system or even for a test. So for mlog_entry_void, we just remove it. for mlog_entry(...), we replace it with mlog(0,...), and they will be replace by trace event later. Signed-off-by: Tao Ma <boyu.mt@taobao.com>
2011-02-01fs/vfs/security: pass last path component to LSM on inode creationEric Paris1-4/+6
SELinux would like to implement a new labeling behavior of newly created inodes. We currently label new inodes based on the parent and the creating process. This new behavior would also take into account the name of the new object when deciding the new label. This is not the (supposed) full path, just the last component of the path. This is very useful because creating /etc/shadow is different than creating /etc/passwd but the kernel hooks are unable to differentiate these operations. We currently require that userspace realize it is doing some difficult operation like that and than userspace jumps through SELinux hoops to get things set up correctly. This patch does not implement new behavior, that is obviously contained in a seperate SELinux patch, but it does pass the needed name down to the correct LSM hook. If no such name exists it is fine to pass NULL. Signed-off-by: Eric Paris <eparis@redhat.com>
2010-10-15ocfs2: Avoid to evaluate xattr block flags again.Jeff Liu1-1/+1
It was evaludated to indexed before, check it is ok i think. Signed-off-by: Jeff Liu <jeff.liu@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-09-10ocfs2/lockdep: Move ip_xattr_sem out of ocfs2_xattr_get_nolock.Tao Ma1-2/+2
As the name shows, we shouldn't have any lock in ocfs2_xattr_get_nolock. so lift ip_xattr_sem to the caller. This should be safe for us since the only 2 callers are: 1. ocfs2_xattr_get which will lock the resources. 2. ocfs2_mknod which don't need this locking. And this also resolves the following lockdep warning. ======================================================= [ INFO: possible circular locking dependency detected ] 2.6.35+ #5 ------------------------------------------------------- reflink/30027 is trying to acquire lock: (&oi->ip_alloc_sem){+.+.+.}, at: [<ffffffffa0673b67>] ocfs2_reflink_ioctl+0x69a/0x1226 [ocfs2] but task is already holding lock: (&oi->ip_xattr_sem){++++..}, at: [<ffffffffa0673b58>] ocfs2_reflink_ioctl+0x68b/0x1226 [ocfs2] which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&oi->ip_xattr_sem){++++..}: [<ffffffff82064d6d>] __lock_acquire+0x79a/0x7f1 [<ffffffff82065a81>] lock_acquire+0xc6/0xed [<ffffffff82339650>] down_read+0x34/0x47 [<ffffffffa0691cb8>] ocfs2_xattr_get_nolock+0xa0/0x4e6 [ocfs2] [<ffffffffa069d64f>] ocfs2_get_acl_nolock+0x5c/0x132 [ocfs2] [<ffffffffa069d9c7>] ocfs2_init_acl+0x60/0x243 [ocfs2] [<ffffffffa066499d>] ocfs2_mknod+0xae8/0xfea [ocfs2] [<ffffffffa0665041>] ocfs2_create+0x9d/0x105 [ocfs2] [<ffffffff820e1c83>] vfs_create+0x9b/0xf4 [<ffffffff820e20bb>] do_last+0x2fd/0x5be [<ffffffff820e31c0>] do_filp_open+0x1fb/0x572 [<ffffffff820d6cf6>] do_sys_open+0x5a/0xe7 [<ffffffff820d6dac>] sys_open+0x1b/0x1d [<ffffffff8200296b>] system_call_fastpath+0x16/0x1b -> #2 (jbd2_handle){+.+...}: [<ffffffff82064d6d>] __lock_acquire+0x79a/0x7f1 [<ffffffff82065a81>] lock_acquire+0xc6/0xed [<ffffffffa0604ff8>] start_this_handle+0x4a3/0x4bc [jbd2] [<ffffffffa06051d6>] jbd2__journal_start+0xba/0xee [jbd2] [<ffffffffa0605218>] jbd2_journal_start+0xe/0x10 [jbd2] [<ffffffffa065ca34>] ocfs2_start_trans+0xb7/0x19b [ocfs2] [<ffffffffa06645f3>] ocfs2_mknod+0x73e/0xfea [ocfs2] [<ffffffffa0665041>] ocfs2_create+0x9d/0x105 [ocfs2] [<ffffffff820e1c83>] vfs_create+0x9b/0xf4 [<ffffffff820e20bb>] do_last+0x2fd/0x5be [<ffffffff820e31c0>] do_filp_open+0x1fb/0x572 [<ffffffff820d6cf6>] do_sys_open+0x5a/0xe7 [<ffffffff820d6dac>] sys_open+0x1b/0x1d [<ffffffff8200296b>] system_call_fastpath+0x16/0x1b -> #1 (&journal->j_trans_barrier){.+.+..}: [<ffffffff82064d6d>] __lock_acquire+0x79a/0x7f1 [<ffffffff82064fa9>] lock_release_non_nested+0x1e5/0x24b [<ffffffff82065999>] lock_release+0x158/0x17a [<ffffffff823389f6>] __mutex_unlock_slowpath+0xbf/0x11b [<ffffffff82338a5b>] mutex_unlock+0x9/0xb [<ffffffffa0679673>] ocfs2_free_ac_resource+0x31/0x67 [ocfs2] [<ffffffffa067c6bc>] ocfs2_free_alloc_context+0x11/0x1d [ocfs2] [<ffffffffa0633de0>] ocfs2_write_begin_nolock+0x141e/0x159b [ocfs2] [<ffffffffa0635523>] ocfs2_write_begin+0x11e/0x1e7 [ocfs2] [<ffffffff820a1297>] generic_file_buffered_write+0x10c/0x210 [<ffffffffa0653624>] ocfs2_file_aio_write+0x4cc/0x6d3 [ocfs2] [<ffffffff820d822d>] do_sync_write+0xc2/0x106 [<ffffffff820d897b>] vfs_write+0xae/0x131 [<ffffffff820d8e55>] sys_write+0x47/0x6f [<ffffffff8200296b>] system_call_fastpath+0x16/0x1b -> #0 (&oi->ip_alloc_sem){+.+.+.}: [<ffffffff82063f92>] validate_chain+0x727/0xd68 [<ffffffff82064d6d>] __lock_acquire+0x79a/0x7f1 [<ffffffff82065a81>] lock_acquire+0xc6/0xed [<ffffffff82339694>] down_write+0x31/0x52 [<ffffffffa0673b67>] ocfs2_reflink_ioctl+0x69a/0x1226 [ocfs2] [<ffffffffa06599f6>] ocfs2_ioctl+0x61a/0x656 [ocfs2] [<ffffffff820e53ac>] vfs_ioctl+0x2a/0x9d [<ffffffff820e5903>] do_vfs_ioctl+0x45d/0x4ae [<ffffffff820e59ab>] sys_ioctl+0x57/0x7a [<ffffffff8200296b>] system_call_fastpath+0x16/0x1b Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-07-12ocfs2: Make xattr reflink work with new local alloc reservation.Tao Ma1-36/+90
The new reservation code in local alloc has add the limitation that the caller should handle the case that the local alloc doesn't give use enough contiguous clusters. It make the old xattr reflink code broken. So this patch udpate the xattr reflink code so that it can handle the case that local alloc give us one cluster at a time. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-07-12ocfs2: make xattr extension work with new local alloc reservation.Tao Ma1-29/+45
The old ocfs2_xattr_extent_allocation is too optimistic about the clusters we can get. So actually if the file system is too fragmented, ocfs2_add_clusters_in_btree will return us with EGAIN and we need to allocate clusters once again. So this patch change it to a while loop so that we can allocate clusters until we reach clusters_to_add. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Cc: stable@kernel.org
2010-05-21ocfs: constify xattr_handlerStephen Hemminger1-6/+6
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-18ocfs2: Don't retry xattr set in case value extension fails.Tao Ma1-2/+4
In normal xattr set, the set sequence is inode, xattr block and finally xattr bucket if we meet with a ENOSPC. But there is a corner case. So consider we will set a xattr whose value will be stored in a cluster, and there is no xattr block by now. So we will reserve 1 xattr block and 1 cluster for setting it. Now if we fail in value extension(in case the volume is almost full and we can't allocate the cluster because the check in ocfs2_test_bg_bit_allocatable), ENOSPC will be returned. So we will try to create a bucket(this time there is a chance that the reserved cluster will be used), and when we try value extension again, kernel bug happens. We did meet with it. Check the bug below. http://oss.oracle.com/bugzilla/show_bug.cgi?id=1251 This patch just try to avoid this by adding a set_abort in ocfs2_xattr_set_ctxt, so in case ENOSPC happens in value extension, we will check whether it is caused by the real ENOSPC or just the full of inode or xattr block. If it is the first case, we set set_abort so that we don't try any further. we are safe to exit directly here ince it is really ENOSPC. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-05-18ocfs2: Reset xattr value size after xa_cleanup_value_truncate().Tao Ma1-7/+10
In ocfs2_prepare_xattr_entry, if we fail to grow an existing value, xa_cleanup_value_truncate() will leave the old entry in place. Thus, we reset its value size. However, if we were allocating a new value, we must not reset the value size or we will BUG(). This resolves oss.oracle.com bug 1247. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-03-22ocfs2: Free block to the right block group.Tao Ma1-1/+4
In case the block we are going to free is allocated from a discontiguous block group, we have to use suballoc_loc to be the right group. Signed-off-by: Tao Ma <tao.ma@oracle.com>
2010-03-26ocfs2: Set suballoc_loc on allocated metadata.Joel Becker1-3/+4
Get the suballoc_loc from ocfs2_claim_new_inode() or ocfs2_claim_metadata(). Store it on the appropriate field of the block we just allocated. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-05-06ocfs2: ocfs2_claim_*() don't need an ocfs2_super argument.Joel Becker1-7/+6
They all take an ocfs2_alloc_context, which has the allocation inode. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Tao Ma <tao.ma@oracle.com>
2010-05-05ocfs2: Make ocfs2_extend_trans() really extend.Tao Ma1-11/+6
In ocfs2, we use ocfs2_extend_trans() to extend a journal handle's blocks. But if jbd2_journal_extend() fails, it will only restart with the the new number of blocks. This tends to be awkward since in most cases we want additional reserved blocks. It makes our code harder to mantain since the caller can't be sure all the original blocks will not be accessed and dirtied again. There are 15 callers of ocfs2_extend_trans() in fs/ocfs2, and 12 of them have to add h_buffer_credits before they call ocfs2_extend_trans(). This makes ocfs2_extend_trans() really extend atop the original block count. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-05-05ocfs2: Make ocfs2_journal_dirty() void.Joel Becker1-31/+7
jbd[2]_journal_dirty_metadata() only returns 0. It's been returning 0 since before the kernel moved to git. There is no point in checking this error. ocfs2_journal_dirty() has been faithfully returning the status since the beginning. All over ocfs2, we have blocks of code checking this can't fail status. In the past few years, we've tried to avoid adding these checks, because they are pointless. But anyone who looks at our code assumes they are needed. Finally, ocfs2_journal_dirty() is made a void function. All error checking is removed from other files. We'll BUG_ON() the status of jbd2_journal_dirty_metadata() just in case they change it someday. They won't. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-03-19ocfs2: Init meta_ac properly in ocfs2_create_empty_xattr_block.Tao Ma1-6/+4
You can't store a pointer that you haven't filled in yet and expect it to work. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-03-19ocfs2: Fix the update of name_offset when removing xattrsTao Ma1-1/+1
When replacing a xattr's value, in some case we wipe its name/value first and then re-add it. The wipe is done by ocfs2_xa_block_wipe_namevalue() when the xattr is in the inode or block. We currently adjust name_offset for all the entries which have (offset < name_offset). This does not adjust the entrie we're replacing. Since we are replacing the entry, we don't adjust the total entry count. When we calculate a new namevalue location, we trust the entries now-wrong offset in ocfs2_xa_get_free_start(). The solution is to also adjust the name_offset for the replaced entry, allowing ocfs2_xa_get_free_start() to calculate the new namevalue location correctly. The following script can trigger a kernel panic easily. echo 'y'|mkfs.ocfs2 --fs-features=local,xattr -b 4K $DEVICE mount -t ocfs2 $DEVICE $MNT_DIR FILE=$MNT_DIR/$RANDOM for((i=0;i<76;i++)) do string_76="a$string_76" done string_78="aa$string_76" string_82="aaaa$string_78" touch $FILE setfattr -n 'user.test1234567890' -v $string_76 $FILE setfattr -n 'user.test1234567890' -v $string_78 $FILE setfattr -n 'user.test1234567890' -v $string_82 $FILE Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Handle errors while setting external xattr values.Joel Becker1-16/+124
ocfs2 can store extended attribute values as large as a single file. It does this using a standard ocfs2 btree for the large value. However, the previous code did not handle all error cases cleanly. There are multiple problems to have. 1) We have trouble allocating space for a new xattr. This leaves us with an empty xattr. 2) We overwrote an existing local xattr with a value root, and now we have an error allocating the storage. This leaves us an empty xattr. where there used to be a value. The value is lost. 3) We have trouble truncating a reused value. This leaves us with the original entry pointing to the truncated original value. The value is lost. 4) We have trouble extending the storage on a reused value. This leaves us with the original value safely in place, but with more storage allocated when needed. This doesn't consider storing local xattrs (values that don't require a btree). Those only fail when the journal fails. Case (1) is easy. We just remove the xattr we added. We leak the storage because we can't safely remove it, but otherwise everything is happy. We'll print a warning about the leak. Case (4) is easy. We still have the original value in place. We can just leave the extra storage attached to this xattr. We return the error, but the old value is untouched. We print a warning about the storage. Case (2) and (3) are hard because we've lost the original values. In the old code, we ended up with values that could be partially read. That's not good. Instead, we just wipe the xattr entry and leak the storage. It stinks that the original value is lost, but now there isn't a partial value to be read. We'll print a big fat warning. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Set inline xattr entries with ocfs2_xa_set()Joel Becker1-84/+73
ocfs2_xattr_ibody_set() is the only remaining user of ocfs2_xattr_set_entry(). ocfs2_xattr_set_entry() actually does two things: it calls ocfs2_xa_set(), and it initializes the inline xattrs. Initializing the inline space really belongs in its own call. We lift the initialization to ocfs2_xattr_ibody_init(), called from ocfs2_xattr_ibody_set() only when necessary. Now ocfs2_xattr_ibody_set() can call ocfs2_xa_set() directly. ocfs2_xattr_set_entry() goes away. Another nice fact is that ocfs2_init_dinode_xa_loc() can trust i_xattr_inline_size. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Set xattr block entries with ocfs2_xa_set()Joel Becker1-50/+49
ocfs2_xattr_block_set() calls into ocfs2_xattr_set_entry() with just the HAS_XATTR flag. Most of the machinery of ocfs2_xattr_set_entry() is skipped. All that really happens other than the call to ocfs2_xa_set() is making sure the HAS_XATTR flag is set on the inode. But HAS_XATTR should be set when we also set di->i_xattr_loc. And that's done in ocfs2_create_xattr_block(). So let's move it there, and then ocfs2_xattr_block_set() can just call ocfs2_xa_set(). While we're there, ocfs2_create_xattr_block() can take the set_ctxt for a smaller argument list. It also learns to set HAS_XATTR_FL, because it knows for sure. ocfs2_create_empty_xatttr_block() in the reflink path fakes a set_ctxt to call ocfs2_create_xattr_block(). Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Let ocfs2_xa_prepare_entry() do space checks.Joel Becker1-177/+93
ocfs2_xattr_set_in_bucket() doesn't need to do its own hacky space checking. Let's let ocfs2_xa_prepare_entry() (via ocfs2_xa_set()) do the more accurate work. Whenever it doesn't have space, ocfs2_xattr_set_in_bucket() can try to get more space. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Gell into ocfs2_xa_set()Joel Becker1-46/+42
ocfs2_xa_set() wraps the ocfs2_xa_prepare_entry()/ocfs2_xa_store_value() logic. Both callers can now use the same routine. ocfs2_xa_remove() moves directly into ocfs2_xa_set(). Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Allocation in ocfs2_xa_prepare_entry(), values in ocfs2_xa_store_value()Joel Becker1-475/+186
ocfs2_xa_prepare_entry() gets all the logic to add, remove, or modify external value trees. Now, when it exits, the entry is ready to receive a value of any size. ocfs2_xa_remove() is added to handle the complete removal of an entry. It truncates the external value tree before calling ocfs2_xa_remove_entry(). ocfs2_xa_store_inline_value() becomes ocfs2_xa_store_value(). It can store any value. ocfs2_xattr_set_entry() loses all the allocation logic and just uses these functions. ocfs2_xattr_set_value_outside() disappears. ocfs2_xattr_set_in_bucket() uses these functions and makes ocfs2_xattr_set_entry_in_bucket() obsolete. That goes away, as does ocfs2_xattr_bucket_set_value_outside() and ocfs2_xattr_bucket_value_truncate(). Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Teach ocfs2_xa_loc how to do its own journal workJoel Becker1-29/+86
We're going to want to make sure our buffers get accessed and dirtied correctly. So have the xa_loc do the work. This includes storing the inode on ocfs2_xa_loc. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Provide ocfs2_xa_fill_value_buf() for external value processingJoel Becker1-0/+59
We use the ocfs2_xattr_value_buf structure to manage external values. It lets the value tree code do its work regardless of the containing storage. ocfs2_xa_fill_value_buf() initializes a value buf from an ocfs2_xa_loc entry. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Handle value tree roots in ocfs2_xa_set_inline_value()Joel Becker1-38/+16
Previously the xattr code would send in a fake value, containing a tree root, to the function that installed name+value pairs. Instead, we pass the real value to ocfs2_xa_set_inline_value(), and it notices that the value cannot fit. Thus, it installs a tree root. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Set the xattr name+value pair in one placeJoel Becker1-223/+411
We create two new functions on ocfs2_xa_loc, ocfs2_xa_prepare_entry() and ocfs2_xa_store_inline_value(). ocfs2_xa_prepare_entry() makes sure that the xl_entry field of ocfs2_xa_loc is ready to receive an xattr. The entry will point to an appropriately sized name+value region in storage. If an existing entry can be reused, it will be. If no entry already exists, it will be allocated. If there isn't space to allocate it, -ENOSPC will be returned. ocfs2_xa_store_inline_value() stores the data that goes into the 'value' part of the name+value pair. For values that don't fit directly, this stores the value tree root. A number of operations are added to ocfs2_xa_loc_operations to support these functions. This reflects the disparate behaviors of xattr blocks and buckets. With these functions, the overlapping ocfs2_xattr_set_entry_local() and ocfs2_xattr_set_entry_normal() can be replaced with a single call scheme. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-02-26ocfs2: Wrap calculation of name+value pair size.Joel Becker1-105/+65
An ocfs2 xattr entry stores the text name and value as a pair in the storage area. Obviously names and values can be variable-sized. If a value is too large for the entry storage, a tree root is stored instead. The name+value pair is also padded. Because of this, there are a million places in the code that do: if (needs_external_tree(value_size) namevalue_size = pad(name_size) + tree_root_size; else namevalue_size = pad(name_size) + pad(value_size); Let's create some convenience functions to make the code more readable. There are three forms. The first takes the raw sizes. The second takes an ocfs2_xattr_info structure. The third takes an existing ocfs2_xattr_entry. Signed-off-by: Joel Becker <joel.becker@oracle.com>
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