4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/lvfs/fsfilt_ext3.c
38 * Author: Andreas Dilger <adilger@clusterfs.com>
41 #define DEBUG_SUBSYSTEM S_FILTER
43 #include <linux/init.h>
44 #include <linux/module.h>
46 #include <linux/slab.h>
47 #include <linux/pagemap.h>
48 #include <linux/quotaops.h>
49 #ifdef HAVE_LINUX_EXPORTFS_H
50 #include <linux/exportfs.h>
52 #ifdef HAVE_EXT4_LDISKFS
53 #include <ext4/ext4.h>
54 #include <ext4/ext4_jbd2.h>
56 #include <linux/jbd.h>
57 #include <linux/ext3_fs.h>
58 #include <linux/ext3_jbd.h>
60 #include <linux/version.h>
61 #include <linux/bitops.h>
62 #include <linux/quota.h>
64 # include <linux/quotaio_v2.h>
65 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
66 # include <quota/quotaio_v2.h>
67 # include <quota/quota_tree.h>
68 # define V2_DQTREEOFF QT_TREEOFF
69 #elif defined(HAVE_FS_QUOTAIO_H)
70 # include <quotaio_v2.h>
71 # include <quota_tree.h>
72 # define V2_DQTREEOFF QT_TREEOFF
73 # define V2_INITQVERSIONS_R1 V2_INITQVERSIONS
77 #define QFMT_LUSTRE QFMT_VFS_V1
79 #define QFMT_LUSTRE QFMT_VFS_V0
82 #if defined(HAVE_EXT3_XATTR_H)
83 # include <ext3/xattr.h>
84 #elif !defined(EXT3_XATTR_INDEX_TRUSTED)
85 /* ext3 xattr.h not available in rh style kernel-devel rpm */
86 /* CHAOS kernel-devel package will not include fs/ldiskfs/xattr.h */
87 # define EXT3_XATTR_INDEX_TRUSTED 4
88 extern int ext3_xattr_get(struct inode *, int, const char *, void *, size_t);
89 extern int ext3_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int);
92 #include <libcfs/libcfs.h>
93 #include <lustre_fsfilt.h>
95 #include <lustre_quota.h>
96 #include <linux/lustre_compat25.h>
97 #include <linux/lprocfs_status.h>
99 #ifdef HAVE_EXT4_LDISKFS
100 #include <ext4/ext4_extents.h>
102 #include <linux/ext3_extents.h>
105 #include "lustre_quota_fmt.h"
107 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
108 #define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS
109 #define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS
111 #define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS(sb)
112 #define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS(sb)
115 /* for kernels 2.6.18 and later */
116 #define FSFILT_SINGLEDATA_TRANS_BLOCKS(sb) EXT3_SINGLEDATA_TRANS_BLOCKS(sb)
118 #define fsfilt_ext3_ext_insert_extent(handle, inode, path, newext, flag) \
119 ext3_ext_insert_extent(handle, inode, path, newext, flag)
121 #define ext3_mb_discard_inode_preallocations(inode) \
122 ext3_discard_preallocations(inode)
124 #ifdef HAVE_EXT4_LDISKFS
125 #define fsfilt_log_start_commit(journal, tid) jbd2_log_start_commit(journal, tid)
126 #define fsfilt_log_wait_commit(journal, tid) jbd2_log_wait_commit(journal, tid)
128 #define fsfilt_log_start_commit(journal, tid) log_start_commit(journal, tid)
129 #define fsfilt_log_wait_commit(journal, tid) log_wait_commit(journal, tid)
130 #define ext_pblock(ex) le32_to_cpu((ex)->ee_start)
131 #define ext3_ext_store_pblock(ex, pblock) ((ex)->ee_start = cpu_to_le32(pblock))
132 #define ext3_inode_bitmap(sb,desc) le32_to_cpu((desc)->bg_inode_bitmap)
135 #ifdef HAVE_EXT4_JOURNAL_CALLBACK_ADD
136 # define journal_callback ext4_journal_cb_entry
137 # define fsfilt_journal_callback_set(handle, func, jcb) \
138 ext4_journal_callback_add(handle, func, jcb)
139 #elif defined(HAVE_JBD2_JOURNAL_CALLBACK_SET)
140 # define fsfilt_journal_callback_set(handle, func, jcb) \
141 jbd2_journal_callback_set(handle, func, jcb)
142 #elif defined(HAVE_JOURNAL_CALLBACK_SET)
143 # define fsfilt_journal_callback_set(handle, func, jcb) \
144 journal_callback_set(handle, func, jcb)
146 # error missing journal commit callback
147 #endif /* HAVE_EXT4_JOURNAL_CALLBACK_ADD */
149 static cfs_mem_cache_t *fcb_cache;
151 struct fsfilt_cb_data {
152 struct journal_callback cb_jcb; /* jbd private data - MUST BE FIRST */
153 fsfilt_cb_t cb_func; /* MDS/OBD completion function */
154 struct obd_device *cb_obd; /* MDS/OBD completion device */
155 __u64 cb_last_rcvd; /* MDS/OST last committed operation */
156 void *cb_data; /* MDS/OST completion function data */
159 #ifndef ext3_find_next_bit
160 #define ext3_find_next_bit ext2_find_next_bit
163 #ifndef ext2_find_next_bit
164 #ifdef __LITTLE_ENDIAN
165 #define ext2_find_next_bit(addr, size, off) find_next_bit((unsigned long *)(addr), (size), (off))
167 error "Need implementation of find_next_bit on big-endian systems"
168 #endif /* __LITTLE_ENDIAN */
169 #endif /* !ext2_find_next_le_bit */
171 static char *fsfilt_ext3_get_label(struct super_block *sb)
173 return EXT3_SB(sb)->s_es->s_volume_name;
176 static int fsfilt_ext3_set_label(struct super_block *sb, char *label)
178 /* see e.g. fsfilt_ext3_write_record() */
183 journal = EXT3_SB(sb)->s_journal;
184 handle = ext3_journal_start_sb(sb, 1);
185 if (IS_ERR(handle)) {
186 CERROR("can't start transaction\n");
187 return(PTR_ERR(handle));
190 err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
194 memcpy(EXT3_SB(sb)->s_es->s_volume_name, label,
195 sizeof(EXT3_SB(sb)->s_es->s_volume_name));
197 err = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
200 ext3_journal_stop(handle);
205 static char *fsfilt_ext3_uuid(struct super_block *sb)
207 return EXT3_SB(sb)->s_es->s_uuid;
210 #ifdef HAVE_DISK_INODE_VERSION
212 static __u64 get_i_version(struct inode *inode)
214 return EXT3_I(inode)->i_fs_version;
217 static void set_i_version(struct inode *inode, __u64 new_version)
219 (EXT3_I(inode))->i_fs_version = new_version;
223 * Get the 64-bit version for an inode.
225 static __u64 fsfilt_ext3_get_version(struct inode *inode)
227 CDEBUG(D_INFO, "Get version "LPX64" for inode %lu\n",
228 get_i_version(inode), inode->i_ino);
229 return get_i_version(inode);
233 * Set the 64-bit version and return the old version.
235 static __u64 fsfilt_ext3_set_version(struct inode *inode, __u64 new_version)
237 __u64 old_version = get_i_version(inode);
239 CDEBUG(D_INFO, "Set version "LPX64" (old "LPX64") for inode %lu\n",
240 new_version, old_version, inode->i_ino);
241 set_i_version(inode, new_version);
242 /* version is set after all inode operations are finished, so we should
243 * mark it dirty here */
244 inode->i_sb->s_op->dirty_inode(inode);
251 * We don't currently need any additional blocks for rmdir and
252 * unlink transactions because we are storing the OST oa_id inside
253 * the inode (which we will be changing anyways as part of this
256 static void *fsfilt_ext3_start(struct inode *inode, int op, void *desc_private,
259 /* For updates to the last received file */
260 int nblocks = FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
264 if (current->journal_info) {
265 CDEBUG(D_INODE, "increasing refcount on %p\n",
266 current->journal_info);
271 case FSFILT_OP_RMDIR:
272 case FSFILT_OP_UNLINK:
273 /* delete one file + create/update logs for each stripe */
274 nblocks += FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb);
275 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
276 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
278 case FSFILT_OP_RENAME:
279 /* modify additional directory */
280 nblocks += FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
282 case FSFILT_OP_SYMLINK:
283 /* additional block + block bitmap + GDT for long symlink */
286 case FSFILT_OP_CREATE: {
287 #if defined(EXT3_EXTENTS_FL) && defined(EXT3_INDEX_FL) && !defined(HAVE_EXT4_LDISKFS)
290 if (!test_opt(inode->i_sb, EXTENTS)) {
292 } else if (((EXT3_I(inode)->i_flags &
293 cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL)) ==
294 cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL))) {
295 CWARN("extent-mapped directory found with "
296 "ext3-based ldiskfs - contact "
297 "http://bugs.whamcloud.com/\n");
304 case FSFILT_OP_MKDIR:
305 case FSFILT_OP_MKNOD:
306 /* modify one inode + block bitmap + GDT */
310 /* modify parent directory */
311 nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
312 FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
313 /* create/update logs for each stripe */
314 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
315 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
317 case FSFILT_OP_SETATTR:
318 /* Setattr on inode */
320 nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
321 FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
322 /* quota chown log for each stripe */
323 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
324 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
326 case FSFILT_OP_CANCEL_UNLINK:
327 /* blocks for log header bitmap update OR
328 * blocks for catalog header bitmap update + unlink of logs */
329 nblocks = (LLOG_CHUNK_SIZE >> inode->i_blkbits) +
330 FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb) * logs;
332 default: CERROR("unknown transaction start op %d\n", op);
336 LASSERT(current->journal_info == desc_private);
337 journal = EXT3_SB(inode->i_sb)->s_journal;
338 if (nblocks > journal->j_max_transaction_buffers) {
339 CWARN("too many credits %d for op %ux%u using %d instead\n",
340 nblocks, op, logs, journal->j_max_transaction_buffers);
341 nblocks = journal->j_max_transaction_buffers;
345 LASSERTF(nblocks > 0, "can't start %d credit transaction\n", nblocks);
346 handle = ext3_journal_start(inode, nblocks);
349 LASSERT(current->journal_info == handle);
351 CERROR("error starting handle for op %u (%u credits): rc %ld\n",
352 op, nblocks, PTR_ERR(handle));
357 * Calculate the number of buffer credits needed to write multiple pages in
358 * a single ext3 transaction. No, this shouldn't be here, but as yet ext3
359 * doesn't have a nice API for calculating this sort of thing in advance.
361 * See comment above ext3_writepage_trans_blocks for details. We assume
362 * no data journaling is being done, but it does allow for all of the pages
363 * being non-contiguous. If we are guaranteed contiguous pages we could
364 * reduce the number of (d)indirect blocks a lot.
366 * With N blocks per page and P pages, for each inode we have at most:
368 * min(N*P, blocksize/4 + 1) dindirect blocks
371 * For the entire filesystem, we have at most:
372 * min(sum(nindir + P), ngroups) bitmap blocks (from the above)
373 * min(sum(nindir + P), gdblocks) group descriptor blocks (from the above)
374 * objcount inode blocks
376 * 2 * EXT3_SINGLEDATA_TRANS_BLOCKS for the quota files
378 * 1 EXT3_DATA_TRANS_BLOCKS for the last_rcvd update.
380 static int fsfilt_ext3_credits_needed(int objcount, struct fsfilt_objinfo *fso,
381 int niocount, struct niobuf_local *nb)
383 struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
385 const int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
386 int nbitmaps = 0, ngdblocks;
387 int needed = objcount + 1; /* inodes + superblock */
390 for (i = 0, j = 0; i < objcount; i++, fso++) {
391 /* two or more dindirect blocks in case we cross boundary */
392 int ndind = (long)((nb[j + fso->fso_bufcnt - 1].offset -
394 sb->s_blocksize_bits) /
395 (EXT3_ADDR_PER_BLOCK(sb) * EXT3_ADDR_PER_BLOCK(sb));
396 nbitmaps += min(fso->fso_bufcnt, ndind > 0 ? ndind : 2);
398 /* leaf, indirect, tindirect blocks for first block */
399 nbitmaps += blockpp + 2;
401 j += fso->fso_bufcnt;
404 next_indir = nb[0].offset +
405 (EXT3_ADDR_PER_BLOCK(sb) << sb->s_blocksize_bits);
406 for (i = 1; i < niocount; i++) {
407 if (nb[i].offset >= next_indir) {
408 nbitmaps++; /* additional indirect */
409 next_indir = nb[i].offset +
410 (EXT3_ADDR_PER_BLOCK(sb)<<sb->s_blocksize_bits);
411 } else if (nb[i].offset != nb[i - 1].offset + sb->s_blocksize) {
412 nbitmaps++; /* additional indirect */
414 nbitmaps += blockpp; /* each leaf in different group? */
417 ngdblocks = nbitmaps;
418 if (nbitmaps > EXT3_SB(sb)->s_groups_count)
419 nbitmaps = EXT3_SB(sb)->s_groups_count;
420 if (ngdblocks > EXT3_SB(sb)->s_gdb_count)
421 ngdblocks = EXT3_SB(sb)->s_gdb_count;
423 needed += nbitmaps + ngdblocks;
425 /* last_rcvd update */
426 needed += FSFILT_DATA_TRANS_BLOCKS(sb);
428 #if defined(CONFIG_QUOTA)
429 /* We assume that there will be 1 bit set in s_dquot.flags for each
430 * quota file that is active. This is at least true for now.
432 needed += hweight32(ll_sb_any_quota_active(sb)) *
433 FSFILT_SINGLEDATA_TRANS_BLOCKS(sb);
439 /* We have to start a huge journal transaction here to hold all of the
440 * metadata for the pages being written here. This is necessitated by
441 * the fact that we do lots of prepare_write operations before we do
442 * any of the matching commit_write operations, so even if we split
443 * up to use "smaller" transactions none of them could complete until
444 * all of them were opened. By having a single journal transaction,
445 * we eliminate duplicate reservations for common blocks like the
446 * superblock and group descriptors or bitmaps.
448 * We will start the transaction here, but each prepare_write will
449 * add a refcount to the transaction, and each commit_write will
450 * remove a refcount. The transaction will be closed when all of
451 * the pages have been written.
453 static void *fsfilt_ext3_brw_start(int objcount, struct fsfilt_objinfo *fso,
454 int niocount, struct niobuf_local *nb,
455 void *desc_private, int logs)
462 LASSERT(current->journal_info == desc_private);
463 journal = EXT3_SB(fso->fso_dentry->d_inode->i_sb)->s_journal;
464 needed = fsfilt_ext3_credits_needed(objcount, fso, niocount, nb);
466 /* The number of blocks we could _possibly_ dirty can very large.
467 * We reduce our request if it is absurd (and we couldn't get that
468 * many credits for a single handle anyways).
470 * At some point we have to limit the size of I/Os sent at one time,
471 * increase the size of the journal, or we have to calculate the
472 * actual journal requirements more carefully by checking all of
473 * the blocks instead of being maximally pessimistic. It remains to
474 * be seen if this is a real problem or not.
476 if (needed > journal->j_max_transaction_buffers) {
477 CERROR("want too many journal credits (%d) using %d instead\n",
478 needed, journal->j_max_transaction_buffers);
479 needed = journal->j_max_transaction_buffers;
482 LASSERTF(needed > 0, "can't start %d credit transaction\n", needed);
483 handle = ext3_journal_start(fso->fso_dentry->d_inode, needed);
484 if (IS_ERR(handle)) {
485 CERROR("can't get handle for %d credits: rc = %ld\n", needed,
488 LASSERT(handle->h_buffer_credits >= needed);
489 LASSERT(current->journal_info == handle);
495 static int fsfilt_ext3_extend(struct inode *inode, unsigned int nblocks,void *h)
497 handle_t *handle = h;
499 /* fsfilt_extend called with nblocks = 0 for testing in special cases */
501 handle->h_buffer_credits = 0;
502 CWARN("setting credits of handle %p to zero by request\n", h);
505 if (handle->h_buffer_credits > nblocks)
507 if (ext3_journal_extend(handle, nblocks) == 0)
510 ext3_mark_inode_dirty(handle, inode);
511 return ext3_journal_restart(handle, nblocks);
514 static int fsfilt_ext3_commit(struct inode *inode, void *h, int force_sync)
517 handle_t *handle = h;
519 LASSERT(current->journal_info == handle);
521 handle->h_sync = 1; /* recovery likes this */
523 rc = ext3_journal_stop(handle);
528 static int fsfilt_ext3_commit_async(struct inode *inode, void *h,
532 transaction_t *transaction;
533 handle_t *handle = h;
537 LASSERT(current->journal_info == handle);
539 transaction = handle->h_transaction;
540 journal = transaction->t_journal;
541 tid = transaction->t_tid;
542 /* we don't want to be blocked */
544 rc = ext3_journal_stop(handle);
546 CERROR("error while stopping transaction: %d\n", rc);
549 fsfilt_log_start_commit(journal, tid);
551 *wait_handle = (void *) tid;
552 CDEBUG(D_INODE, "commit async: %lu\n", (unsigned long) tid);
556 static int fsfilt_ext3_commit_wait(struct inode *inode, void *h)
558 journal_t *journal = EXT3_JOURNAL(inode);
559 tid_t tid = (tid_t)(long)h;
561 CDEBUG(D_INODE, "commit wait: %lu\n", (unsigned long) tid);
562 if (unlikely(is_journal_aborted(journal)))
565 fsfilt_log_wait_commit(EXT3_JOURNAL(inode), tid);
567 if (unlikely(is_journal_aborted(journal)))
572 static int fsfilt_ext3_setattr(struct dentry *dentry, void *handle,
573 struct iattr *iattr, int do_trunc)
575 struct inode *inode = dentry->d_inode;
578 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
579 /* Try to correct for a bug in 2.1.0 (LU-221) that caused negative
580 * timestamps to appear to be in the far future, due old timestamp
581 * being stored on disk as an unsigned value. This fixes up any
582 * bad values held by the client before storing them on disk,
583 * and ensures any timestamp updates are correct. LU-1042 */
584 if (unlikely(LTIME_S(inode->i_atime) == LU221_BAD_TIME &&
585 !(iattr->ia_valid & ATTR_ATIME))) {
586 iattr->ia_valid |= ATTR_ATIME;
587 LTIME_S(iattr->ia_atime) = 0;
589 if (unlikely(LTIME_S(inode->i_mtime) == LU221_BAD_TIME &&
590 !(iattr->ia_valid & ATTR_MTIME))) {
591 iattr->ia_valid |= ATTR_MTIME;
592 LTIME_S(iattr->ia_mtime) = 0;
594 if (unlikely((LTIME_S(inode->i_ctime) == LU221_BAD_TIME ||
595 LTIME_S(inode->i_ctime) == 0) &&
596 !(iattr->ia_valid & ATTR_CTIME))) {
597 iattr->ia_valid |= ATTR_CTIME;
598 LTIME_S(iattr->ia_ctime) = 0;
601 #warning "remove old LU-221/LU-1042 workaround code"
604 /* When initializating timestamps for new inodes, use the filesystem
605 * mkfs time for ctime to avoid e2fsck ibadness incorrectly thinking
606 * that this is potentially an invalid inode. Files with an old ctime
607 * migrated to a newly-formatted OST with a newer s_mkfs_time will not
608 * hit this check, since it is only for ctime == 0. LU-1010/LU-1042 */
609 if ((iattr->ia_valid & ATTR_CTIME) && LTIME_S(iattr->ia_ctime) == 0)
610 LTIME_S(iattr->ia_ctime) =
611 EXT4_SB(inode->i_sb)->s_es->s_mkfs_time;
613 /* Avoid marking the inode dirty on the superblock list unnecessarily.
614 * We are already writing the inode to disk as part of this
615 * transaction and want to avoid a lot of extra inode writeout
616 * later on. b=9828 */
617 if (iattr->ia_valid & ATTR_SIZE && !do_trunc) {
618 /* ATTR_SIZE would invoke truncate: clear it */
619 iattr->ia_valid &= ~ATTR_SIZE;
620 EXT3_I(inode)->i_disksize = iattr->ia_size;
621 i_size_write(inode, iattr->ia_size);
623 if (iattr->ia_valid & ATTR_UID)
624 inode->i_uid = iattr->ia_uid;
625 if (iattr->ia_valid & ATTR_GID)
626 inode->i_gid = iattr->ia_gid;
627 if (iattr->ia_valid & ATTR_ATIME)
628 inode->i_atime = iattr->ia_atime;
629 if (iattr->ia_valid & ATTR_MTIME)
630 inode->i_mtime = iattr->ia_mtime;
631 if (iattr->ia_valid & ATTR_CTIME)
632 inode->i_ctime = iattr->ia_ctime;
633 if (iattr->ia_valid & ATTR_MODE) {
634 inode->i_mode = iattr->ia_mode;
636 if (!cfs_curproc_is_in_groups(inode->i_gid) &&
637 !cfs_capable(CFS_CAP_FSETID))
638 inode->i_mode &= ~S_ISGID;
641 inode->i_sb->s_op->dirty_inode(inode);
646 /* Don't allow setattr to change file type */
647 if (iattr->ia_valid & ATTR_MODE)
648 iattr->ia_mode = (inode->i_mode & S_IFMT) |
649 (iattr->ia_mode & ~S_IFMT);
651 /* We set these flags on the client, but have already checked perms
652 * so don't confuse inode_change_ok. */
653 iattr->ia_valid &= ~TIMES_SET_FLAGS;
655 if (inode->i_op->setattr) {
656 rc = inode->i_op->setattr(dentry, iattr);
658 #ifndef HAVE_SIMPLE_SETATTR /* simple_setattr() already call it */
659 rc = inode_change_ok(inode, iattr);
662 rc = simple_setattr(dentry, iattr);
669 static int fsfilt_ext3_iocontrol(struct inode *inode, struct file *file,
670 unsigned int cmd, unsigned long arg)
675 /* FIXME: Can't do this because of nested transaction deadlock */
676 if (cmd == EXT3_IOC_SETFLAGS) {
677 /* We can't enable data journaling on OST objects, because
678 * this forces the transaction to be closed in order to
679 * flush the journal, but the caller will already have a
680 * compound transaction open to update the last_rcvd file,
681 * and this thread would deadlock trying to set the flag. */
682 if ((*(int *)arg) & EXT3_JOURNAL_DATA_FL) {
683 CERROR("can't set data journal flag on file\n");
686 /* Because the MDS does not see the EXTENTS_FL set on the
687 * OST objects, mask this flag into all set flags. It is
688 * not legal to clear this flag in any case, so we are not
689 * changing the functionality by doing this. b=22911 */
690 *(int *)arg |= EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL;
693 #ifdef HAVE_EXT4_LDISKFS
694 /* ext4_ioctl does not have a inode argument */
695 if (inode->i_fop->unlocked_ioctl)
696 rc = inode->i_fop->unlocked_ioctl(file, cmd, arg);
698 if (inode->i_fop->ioctl)
699 rc = inode->i_fop->ioctl(inode, file, cmd, arg);
707 static int fsfilt_ext3_set_md(struct inode *inode, void *handle,
708 void *lmm, int lmm_size, const char *name)
712 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
714 rc = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_TRUSTED,
715 name, lmm, lmm_size, XATTR_NO_CTIME);
718 if (rc && rc != -EROFS)
719 CERROR("error adding MD data to inode %lu: rc = %d\n",
724 /* Must be called with i_mutex held */
725 static int fsfilt_ext3_get_md(struct inode *inode, void *lmm, int lmm_size,
730 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
732 rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED,
733 name, lmm, lmm_size);
735 /* This gives us the MD size */
737 return (rc == -ENODATA) ? 0 : rc;
740 CDEBUG(D_INFO, "error getting EA %d/%s from inode %lu: rc %d\n",
741 EXT3_XATTR_INDEX_TRUSTED, name,
743 memset(lmm, 0, lmm_size);
744 return (rc == -ENODATA) ? 0 : rc;
750 static int fsfilt_ext3_send_bio(int rw, struct inode *inode, struct bio *bio)
756 static ssize_t fsfilt_ext3_readpage(struct file *file, char *buf, size_t count,
759 struct inode *inode = file->f_dentry->d_inode;
762 if (S_ISREG(inode->i_mode))
763 rc = file->f_op->read(file, buf, count, off);
765 const int blkbits = inode->i_sb->s_blocksize_bits;
766 const int blksize = inode->i_sb->s_blocksize;
768 CDEBUG(D_EXT2, "reading %lu at dir %lu+%llu\n",
769 (unsigned long)count, inode->i_ino, *off);
771 struct buffer_head *bh;
774 if (*off < i_size_read(inode)) {
777 bh = ext3_bread(NULL, inode, *off >> blkbits,
780 CDEBUG(D_EXT2, "read %u@%llu\n", blksize, *off);
783 memcpy(buf, bh->b_data, blksize);
786 /* XXX in theory we should just fake
787 * this buffer and continue like ext3,
788 * especially if this is a partial read
790 CERROR("error read dir %lu+%llu: %d\n",
791 inode->i_ino, *off, err);
796 struct ext3_dir_entry_2 *fake = (void *)buf;
798 CDEBUG(D_EXT2, "fake %u@%llu\n", blksize, *off);
799 memset(fake, 0, sizeof(*fake));
800 fake->rec_len = cpu_to_le16(blksize);
812 #ifdef HAVE_EXT4_JOURNAL_CALLBACK_ADD
813 static void fsfilt_ext3_cb_func(struct super_block *sb,
814 struct journal_callback *jcb, int error)
816 static void fsfilt_ext3_cb_func(struct journal_callback *jcb, int error)
819 struct fsfilt_cb_data *fcb = container_of(jcb, typeof(*fcb), cb_jcb);
821 fcb->cb_func(fcb->cb_obd, fcb->cb_last_rcvd, fcb->cb_data, error);
823 OBD_SLAB_FREE(fcb, fcb_cache, sizeof *fcb);
826 static int fsfilt_ext3_add_journal_cb(struct obd_device *obd, __u64 last_rcvd,
827 void *handle, fsfilt_cb_t cb_func,
830 struct fsfilt_cb_data *fcb;
832 OBD_SLAB_ALLOC_PTR_GFP(fcb, fcb_cache, CFS_ALLOC_IO);
836 fcb->cb_func = cb_func;
838 fcb->cb_last_rcvd = last_rcvd;
839 fcb->cb_data = cb_data;
841 CDEBUG(D_EXT2, "set callback for last_rcvd: "LPD64"\n", last_rcvd);
842 fsfilt_journal_callback_set(handle, fsfilt_ext3_cb_func, &fcb->cb_jcb);
847 static int fsfilt_ext3_statfs(struct super_block *sb, struct obd_statfs *osfs)
852 memset(&sfs, 0, sizeof(sfs));
853 rc = ll_do_statfs(sb, &sfs);
854 statfs_pack(osfs, &sfs);
858 static int fsfilt_ext3_sync(struct super_block *sb)
860 return ext3_force_commit(sb);
863 #ifndef EXT3_EXTENTS_FL
864 #define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
867 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
868 # define fsfilt_up_truncate_sem(inode) up(&LDISKFS_I(inode)->truncate_sem);
869 # define fsfilt_down_truncate_sem(inode) down(&LDISKFS_I(inode)->truncate_sem);
871 # ifdef HAVE_EXT4_LDISKFS
872 # define fsfilt_up_truncate_sem(inode) do{ }while(0)
873 # define fsfilt_down_truncate_sem(inode) do{ }while(0)
875 # define fsfilt_up_truncate_sem(inode) mutex_unlock(&EXT3_I(inode)->truncate_mutex)
876 # define fsfilt_down_truncate_sem(inode) mutex_lock(&EXT3_I(inode)->truncate_mutex)
881 #define EXT_ASSERT(cond) BUG_ON(!(cond))
884 #ifdef EXT3_EXT_HAS_NO_TREE
885 /* for kernels 2.6.18 and later */
886 #ifdef HAVE_EXT4_LDISKFS
887 #define EXT_GENERATION(inode) (EXT4_I(inode)->i_ext_generation)
889 #define EXT_GENERATION(inode) ext_generation(inode)
891 #define ext3_ext_base inode
892 #define ext3_ext_base2inode(inode) (inode)
893 #define EXT_DEPTH(inode) ext_depth(inode)
894 #define fsfilt_ext3_ext_walk_space(inode, block, num, cb, cbdata) \
895 ext3_ext_walk_space(inode, block, num, cb, cbdata);
897 #define ext3_ext_base ext3_extents_tree
898 #define ext3_ext_base2inode(tree) (tree->inode)
899 #define fsfilt_ext3_ext_walk_space(tree, block, num, cb, cbdata) \
900 ext3_ext_walk_space(tree, block, num, cb);
904 unsigned long *blocks;
912 static long ext3_ext_find_goal(struct inode *inode, struct ext3_ext_path *path,
913 unsigned long block, int *aflags)
915 struct ext3_inode_info *ei = EXT3_I(inode);
916 unsigned long bg_start;
917 unsigned long colour;
921 struct ext3_extent *ex;
922 depth = path->p_depth;
924 /* try to predict block placement */
925 if ((ex = path[depth].p_ext))
926 return ext_pblock(ex) + (block - le32_to_cpu(ex->ee_block));
928 /* it looks index is empty
929 * try to find starting from index itself */
930 if (path[depth].p_bh)
931 return path[depth].p_bh->b_blocknr;
934 /* OK. use inode's group */
935 bg_start = (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) +
936 le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block);
937 colour = (current->pid % 16) *
938 (EXT3_BLOCKS_PER_GROUP(inode->i_sb) / 16);
939 return bg_start + colour + block;
942 #define ll_unmap_underlying_metadata(sb, blocknr) \
943 unmap_underlying_metadata((sb)->s_bdev, blocknr)
945 #ifndef EXT3_MB_HINT_GROUP_ALLOC
946 static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
947 struct ext3_ext_path *path, unsigned long block,
948 unsigned long *count, int *err)
950 unsigned long pblock, goal;
952 struct inode *inode = ext3_ext_base2inode(base);
954 goal = ext3_ext_find_goal(inode, path, block, &aflags);
955 aflags |= 2; /* block have been already reserved */
956 pblock = ext3_mb_new_blocks(handle, inode, goal, count, aflags, err);
961 static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
962 struct ext3_ext_path *path, unsigned long block,
963 unsigned long *count, int *err)
965 struct inode *inode = ext3_ext_base2inode(base);
966 struct ext3_allocation_request ar;
967 unsigned long pblock;
970 /* find neighbour allocated blocks */
972 *err = ext3_ext_search_left(base, path, &ar.lleft, &ar.pleft);
976 *err = ext3_ext_search_right(base, path, &ar.lright, &ar.pright);
980 /* allocate new block */
981 ar.goal = ext3_ext_find_goal(inode, path, block, &aflags);
985 ar.flags = EXT3_MB_HINT_DATA;
986 pblock = ext3_mb_new_blocks(handle, &ar, err);
992 #ifdef EXT3_EXT_HAS_NO_TREE
993 static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
994 struct ext3_ext_path *path,
995 struct ext3_ext_cache *cex,
996 #ifdef HAVE_EXT_PREPARE_CB_EXTENT
997 struct ext3_extent *ex,
1001 struct bpointers *bp = cbdata;
1003 static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
1004 struct ext3_ext_path *path,
1005 struct ext3_ext_cache *cex
1006 #ifdef HAVE_EXT_PREPARE_CB_EXTENT
1007 , struct ext3_extent *ex
1011 struct bpointers *bp = base->private;
1013 struct inode *inode = ext3_ext_base2inode(base);
1014 struct ext3_extent nex;
1015 unsigned long pblock;
1018 unsigned long count;
1021 if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
1026 if (bp->create == 0) {
1028 if (cex->ec_block < bp->start)
1029 i = bp->start - cex->ec_block;
1030 if (i >= cex->ec_len)
1031 CERROR("nothing to do?! i = %d, e_num = %u\n",
1033 for (; i < cex->ec_len && bp->num; i++) {
1042 return EXT_CONTINUE;
1045 tgen = EXT_GENERATION(base);
1046 count = ext3_ext_calc_credits_for_insert(base, path);
1047 fsfilt_up_truncate_sem(inode);
1049 handle = ext3_journal_start(inode, count+EXT3_ALLOC_NEEDED+1);
1050 if (IS_ERR(handle)) {
1051 fsfilt_down_truncate_sem(inode);
1052 return PTR_ERR(handle);
1055 fsfilt_down_truncate_sem(inode);
1056 if (tgen != EXT_GENERATION(base)) {
1057 /* the tree has changed. so path can be invalid at moment */
1058 ext3_journal_stop(handle);
1062 #if defined(HAVE_EXT4_LDISKFS)
1063 /* In 2.6.32 kernel, ext4_ext_walk_space()'s callback func is not
1064 * protected by i_data_sem as whole. so we patch it to store
1065 * generation to path and now verify the tree hasn't changed */
1066 down_write((&EXT4_I(inode)->i_data_sem));
1068 /* validate extent, make sure the extent tree does not changed */
1069 if (EXT_GENERATION(base) != path[0].p_generation) {
1070 /* cex is invalid, try again */
1071 up_write(&EXT4_I(inode)->i_data_sem);
1072 ext3_journal_stop(handle);
1077 count = cex->ec_len;
1078 pblock = new_blocks(handle, base, path, cex->ec_block, &count, &err);
1081 EXT_ASSERT(count <= cex->ec_len);
1083 /* insert new extent */
1084 nex.ee_block = cpu_to_le32(cex->ec_block);
1085 ext3_ext_store_pblock(&nex, pblock);
1086 nex.ee_len = cpu_to_le16(count);
1087 err = fsfilt_ext3_ext_insert_extent(handle, base, path, &nex, 0);
1089 /* free data blocks we just allocated */
1090 /* not a good idea to call discard here directly,
1091 * but otherwise we'd need to call it every free() */
1092 #ifdef EXT3_MB_HINT_GROUP_ALLOC
1093 ext3_mb_discard_inode_preallocations(inode);
1095 ext3_free_blocks(handle, inode, ext_pblock(&nex),
1096 cpu_to_le16(nex.ee_len), 0);
1101 * Putting len of the actual extent we just inserted,
1102 * we are asking ext3_ext_walk_space() to continue
1103 * scaning after that block
1105 cex->ec_len = le16_to_cpu(nex.ee_len);
1106 cex->ec_start = ext_pblock(&nex);
1107 BUG_ON(le16_to_cpu(nex.ee_len) == 0);
1108 BUG_ON(le32_to_cpu(nex.ee_block) != cex->ec_block);
1111 #if defined(HAVE_EXT4_LDISKFS)
1112 up_write((&EXT4_I(inode)->i_data_sem));
1114 ext3_journal_stop(handle);
1119 CERROR("hmm. why do we find this extent?\n");
1120 CERROR("initial space: %lu:%u\n",
1121 bp->start, bp->init_num);
1122 CERROR("current extent: %u/%u/%llu %d\n",
1123 cex->ec_block, cex->ec_len,
1124 (unsigned long long)cex->ec_start,
1128 if (cex->ec_block < bp->start)
1129 i = bp->start - cex->ec_block;
1130 if (i >= cex->ec_len)
1131 CERROR("nothing to do?! i = %d, e_num = %u\n",
1133 for (; i < cex->ec_len && bp->num; i++) {
1134 *(bp->blocks) = cex->ec_start + i;
1135 if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
1139 /* unmap any possible underlying metadata from
1140 * the block device mapping. bug 6998. */
1141 ll_unmap_underlying_metadata(inode->i_sb,
1153 int fsfilt_map_nblocks(struct inode *inode, unsigned long block,
1154 unsigned long num, unsigned long *blocks,
1155 int *created, int create)
1157 #ifdef EXT3_EXT_HAS_NO_TREE
1158 struct ext3_ext_base *base = inode;
1160 struct ext3_extents_tree tree;
1161 struct ext3_ext_base *base = &tree;
1163 struct bpointers bp;
1166 CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
1167 block, block + num - 1, (unsigned) inode->i_ino);
1169 #ifndef EXT3_EXT_HAS_NO_TREE
1170 ext3_init_tree_desc(base, inode);
1174 bp.created = created;
1176 bp.init_num = bp.num = num;
1179 fsfilt_down_truncate_sem(inode);
1180 err = fsfilt_ext3_ext_walk_space(base, block, num,
1181 ext3_ext_new_extent_cb, &bp);
1182 ext3_ext_invalidate_cache(base);
1183 fsfilt_up_truncate_sem(inode);
1188 int fsfilt_ext3_map_ext_inode_pages(struct inode *inode, struct page **page,
1189 int pages, unsigned long *blocks,
1190 int *created, int create)
1192 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
1194 struct page *fp = NULL;
1197 CDEBUG(D_OTHER, "inode %lu: map %d pages from %lu\n",
1198 inode->i_ino, pages, (*page)->index);
1200 /* pages are sorted already. so, we just have to find
1201 * contig. space and process them properly */
1204 /* start new extent */
1209 } else if (fp->index + clen == (*page)->index) {
1210 /* continue the extent */
1217 /* process found extent */
1218 rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
1219 clen * blocks_per_page, blocks,
1224 /* look for next extent */
1226 blocks += blocks_per_page * clen;
1227 created += blocks_per_page * clen;
1231 rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
1232 clen * blocks_per_page, blocks,
1238 extern int ext3_map_inode_page(struct inode *inode, struct page *page,
1239 unsigned long *blocks, int *created, int create);
1240 int fsfilt_ext3_map_bm_inode_pages(struct inode *inode, struct page **page,
1241 int pages, unsigned long *blocks,
1242 int *created, int create)
1244 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
1248 for (i = 0, cr = created, b = blocks; i < pages; i++, page++) {
1249 rc = ext3_map_inode_page(inode, *page, b, cr, create);
1251 CERROR("ino %lu, blk %lu cr %u create %d: rc %d\n",
1252 inode->i_ino, *b, *cr, create, rc);
1256 b += blocks_per_page;
1257 cr += blocks_per_page;
1262 int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page,
1263 int pages, unsigned long *blocks,
1264 int *created, int create,
1265 cfs_mutex_t *optional_mutex)
1269 if (EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL) {
1270 rc = fsfilt_ext3_map_ext_inode_pages(inode, page, pages,
1271 blocks, created, create);
1274 if (optional_mutex != NULL)
1275 cfs_mutex_lock(optional_mutex);
1276 rc = fsfilt_ext3_map_bm_inode_pages(inode, page, pages, blocks,
1278 if (optional_mutex != NULL)
1279 cfs_mutex_unlock(optional_mutex);
1284 int fsfilt_ext3_read(struct inode *inode, void *buf, int size, loff_t *offs)
1286 unsigned long block;
1287 struct buffer_head *bh;
1288 int err, blocksize, csize, boffs, osize = size;
1290 /* prevent reading after eof */
1291 spin_lock(&inode->i_lock);
1292 if (i_size_read(inode) < *offs + size) {
1293 size = i_size_read(inode) - *offs;
1294 spin_unlock(&inode->i_lock);
1296 CDEBUG(D_EXT2, "size %llu is too short for read @%llu\n",
1297 i_size_read(inode), *offs);
1299 } else if (size == 0) {
1303 spin_unlock(&inode->i_lock);
1306 blocksize = 1 << inode->i_blkbits;
1309 block = *offs >> inode->i_blkbits;
1310 boffs = *offs & (blocksize - 1);
1311 csize = min(blocksize - boffs, size);
1312 bh = ext3_bread(NULL, inode, block, 0, &err);
1314 CERROR("can't read block: %d\n", err);
1318 memcpy(buf, bh->b_data + boffs, csize);
1327 EXPORT_SYMBOL(fsfilt_ext3_read);
1329 static int fsfilt_ext3_read_record(struct file * file, void *buf,
1330 int size, loff_t *offs)
1333 rc = fsfilt_ext3_read(file->f_dentry->d_inode, buf, size, offs);
1339 int fsfilt_ext3_write_handle(struct inode *inode, void *buf, int bufsize,
1340 loff_t *offs, handle_t *handle)
1342 struct buffer_head *bh = NULL;
1343 loff_t old_size = i_size_read(inode), offset = *offs;
1344 loff_t new_size = i_size_read(inode);
1345 unsigned long block;
1346 int err = 0, blocksize = 1 << inode->i_blkbits, size, boffs;
1348 while (bufsize > 0) {
1352 block = offset >> inode->i_blkbits;
1353 boffs = offset & (blocksize - 1);
1354 size = min(blocksize - boffs, bufsize);
1355 bh = ext3_bread(handle, inode, block, 1, &err);
1357 CERROR("can't read/create block: %d\n", err);
1361 err = ext3_journal_get_write_access(handle, bh);
1363 CERROR("journal_get_write_access() returned error %d\n",
1367 LASSERT(bh->b_data + boffs + size <= bh->b_data + bh->b_size);
1368 memcpy(bh->b_data + boffs, buf, size);
1369 err = ext3_journal_dirty_metadata(handle, bh);
1371 CERROR("journal_dirty_metadata() returned error %d\n",
1375 if (offset + size > new_size)
1376 new_size = offset + size;
1384 /* correct in-core and on-disk sizes */
1385 if (new_size > i_size_read(inode)) {
1386 spin_lock(&inode->i_lock);
1387 if (new_size > i_size_read(inode))
1388 i_size_write(inode, new_size);
1389 if (i_size_read(inode) > EXT3_I(inode)->i_disksize)
1390 EXT3_I(inode)->i_disksize = i_size_read(inode);
1391 if (i_size_read(inode) > old_size) {
1392 spin_unlock(&inode->i_lock);
1393 mark_inode_dirty(inode);
1395 spin_unlock(&inode->i_lock);
1403 EXPORT_SYMBOL(fsfilt_ext3_write_handle);
1405 static int fsfilt_ext3_write_record(struct file *file, void *buf, int bufsize,
1406 loff_t *offs, int force_sync)
1408 struct inode *inode = file->f_dentry->d_inode;
1410 int err, block_count = 0, blocksize;
1412 /* Determine how many transaction credits are needed */
1413 blocksize = 1 << inode->i_blkbits;
1414 block_count = (*offs & (blocksize - 1)) + bufsize;
1415 block_count = (block_count + blocksize - 1) >> inode->i_blkbits;
1417 handle = ext3_journal_start(inode,
1418 block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2);
1419 if (IS_ERR(handle)) {
1420 CERROR("can't start transaction for %d blocks (%d bytes)\n",
1421 block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2, bufsize);
1422 return PTR_ERR(handle);
1425 err = fsfilt_ext3_write_handle(inode, buf, bufsize, offs, handle);
1427 if (!err && force_sync)
1428 handle->h_sync = 1; /* recovery likes this */
1430 ext3_journal_stop(handle);
1435 static int fsfilt_ext3_setup(struct super_block *sb)
1437 #if ((LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)) && \
1438 defined(HAVE_QUOTA_SUPPORT)) || defined(S_PDIROPS)
1439 struct ext3_sb_info *sbi = EXT3_SB(sb);
1441 sbi->dx_lock = fsfilt_ext3_dx_lock;
1442 sbi->dx_unlock = fsfilt_ext3_dx_unlock;
1445 if (!EXT3_HAS_COMPAT_FEATURE(sb,
1446 EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1447 CERROR("ext3 mounted without journal\n");
1452 CWARN("Enabling PDIROPS\n");
1453 set_opt(sbi->s_mount_opt, PDIROPS);
1454 sb->s_flags |= S_PDIROPS;
1456 if (!EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_DIR_INDEX))
1457 CWARN("filesystem doesn't have dir_index feature enabled\n");
1458 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)) && defined(HAVE_QUOTA_SUPPORT)
1459 /* enable journaled quota support */
1460 /* kfreed in ext3_put_super() */
1461 sbi->s_qf_names[USRQUOTA] = kstrdup("lquota.user.reserved", GFP_KERNEL);
1462 if (!sbi->s_qf_names[USRQUOTA])
1464 sbi->s_qf_names[GRPQUOTA] = kstrdup("lquota.group.reserved", GFP_KERNEL);
1465 if (!sbi->s_qf_names[GRPQUOTA]) {
1466 kfree(sbi->s_qf_names[USRQUOTA]);
1467 sbi->s_qf_names[USRQUOTA] = NULL;
1470 sbi->s_jquota_fmt = QFMT_LUSTRE;
1471 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13))
1472 set_opt(sbi->s_mount_opt, QUOTA);
1478 /* If fso is NULL, op is FSFILT operation, otherwise op is number of fso
1479 objects. Logs is number of logfiles to update */
1480 static int fsfilt_ext3_get_op_len(int op, struct fsfilt_objinfo *fso, int logs)
1484 case FSFILT_OP_CREATE:
1485 /* directory leaf, index & indirect & EA*/
1486 return 4 + 3 * logs;
1487 case FSFILT_OP_UNLINK:
1493 struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
1494 int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
1495 int addrpp = EXT3_ADDR_PER_BLOCK(sb) * blockpp;
1496 for (i = 0; i < op; i++, fso++) {
1497 int nblocks = fso->fso_bufcnt * blockpp;
1498 int ndindirect = min(nblocks, addrpp + 1);
1499 int nindir = nblocks + ndindirect + 1;
1503 return needed + 3 * logs;
1509 #ifdef HAVE_QUOTA_SUPPORT
1510 #define DQINFO_COPY(out, in) \
1512 Q_COPY(out, in, dqi_bgrace); \
1513 Q_COPY(out, in, dqi_igrace); \
1514 Q_COPY(out, in, dqi_flags); \
1515 Q_COPY(out, in, dqi_valid); \
1518 #define DQBLK_COPY(out, in) \
1520 Q_COPY(out, in, dqb_bhardlimit); \
1521 Q_COPY(out, in, dqb_bsoftlimit); \
1522 Q_COPY(out, in, dqb_curspace); \
1523 Q_COPY(out, in, dqb_ihardlimit); \
1524 Q_COPY(out, in, dqb_isoftlimit); \
1525 Q_COPY(out, in, dqb_curinodes); \
1526 Q_COPY(out, in, dqb_btime); \
1527 Q_COPY(out, in, dqb_itime); \
1528 Q_COPY(out, in, dqb_valid); \
1531 static int fsfilt_ext3_quotactl(struct super_block *sb,
1532 struct obd_quotactl *oqc)
1534 int i, rc = 0, error = 0;
1535 const struct quotactl_ops *qcop;
1536 struct if_dqinfo *info;
1537 struct if_dqblk *dqblk;
1543 OBD_ALLOC_PTR(info);
1546 OBD_ALLOC_PTR(dqblk);
1552 DQINFO_COPY(info, &oqc->qc_dqinfo);
1553 DQBLK_COPY(dqblk, &oqc->qc_dqblk);
1556 if (oqc->qc_cmd == Q_QUOTAON || oqc->qc_cmd == Q_QUOTAOFF) {
1557 for (i = 0; i < MAXQUOTAS; i++) {
1558 if (!Q_TYPESET(oqc, i))
1561 if (oqc->qc_cmd == Q_QUOTAON) {
1562 char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1564 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1566 rc = ll_quota_on(sb, i, QFMT_LUSTRE,
1568 } else if (oqc->qc_cmd == Q_QUOTAOFF) {
1569 rc = ll_quota_off(sb, i, 0);
1577 GOTO(out, rc ?: error);
1580 switch (oqc->qc_cmd) {
1583 if (!qcop->get_info)
1584 GOTO(out, rc = -ENOSYS);
1585 rc = qcop->get_info(sb, oqc->qc_type, info);
1589 if (!qcop->set_dqblk)
1590 GOTO(out, rc = -ENOSYS);
1591 rc = qcop->set_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
1595 if (!qcop->get_dqblk)
1596 GOTO(out, rc = -ENOSYS);
1597 rc = qcop->get_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
1599 dqblk->dqb_valid = QIF_LIMITS | QIF_USAGE;
1602 if (!sb->s_qcop->quota_sync)
1603 GOTO(out, rc = -ENOSYS);
1604 qcop->quota_sync(sb, oqc->qc_type);
1607 CDEBUG(D_WARNING, "invalidating operational quota files\n");
1608 for (i = 0; i < MAXQUOTAS; i++) {
1610 char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1612 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1614 if (!Q_TYPESET(oqc, i))
1617 fp = filp_open(name[i], O_CREAT | O_TRUNC | O_RDWR, 0644);
1620 CERROR("error invalidating operational quota file"
1621 " %s (rc:%d)\n", name[i], rc);
1629 CERROR("unsupported quotactl command: %d\n", oqc->qc_cmd);
1633 DQINFO_COPY(&oqc->qc_dqinfo, info);
1634 DQBLK_COPY(&oqc->qc_dqblk, dqblk);
1637 OBD_FREE_PTR(dqblk);
1640 CDEBUG(D_QUOTA, "quotactl command %#x, id %u, type %u "
1642 oqc->qc_cmd, oqc->qc_id, oqc->qc_type, rc);
1647 cfs_hlist_node_t dqb_hash; /** quotacheck hash */
1648 cfs_list_t dqb_list; /** in list also */
1649 qid_t dqb_id; /** uid/gid */
1650 short dqb_type; /** USRQUOTA/GRPQUOTA */
1651 qsize_t dqb_bhardlimit; /** block hard limit */
1652 qsize_t dqb_bsoftlimit; /** block soft limit */
1653 qsize_t dqb_curspace; /** current space */
1654 qsize_t dqb_ihardlimit; /** inode hard limit */
1655 qsize_t dqb_isoftlimit; /** inode soft limit */
1656 qsize_t dqb_curinodes; /** current inodes */
1657 obd_time dqb_btime; /** block grace time */
1658 obd_time dqb_itime; /** inode grace time */
1659 __u32 dqb_valid; /** flag for above fields */
1662 static inline unsigned int chkquot_hash(qid_t id, int type)
1663 __attribute__((__const__));
1665 static inline unsigned int chkquot_hash(qid_t id, int type)
1667 return (id * (MAXQUOTAS - type)) % NR_DQHASH;
1670 static inline struct chk_dqblk *
1671 find_chkquot(cfs_hlist_head_t *head, qid_t id, int type)
1673 cfs_hlist_node_t *node;
1674 struct chk_dqblk *cdqb;
1676 cfs_hlist_for_each(node, head) {
1677 cdqb = cfs_hlist_entry(node, struct chk_dqblk, dqb_hash);
1678 if (cdqb->dqb_id == id && cdqb->dqb_type == type)
1685 static struct chk_dqblk *alloc_chkquot(qid_t id, int type)
1687 struct chk_dqblk *cdqb;
1689 OBD_ALLOC_PTR(cdqb);
1691 CFS_INIT_HLIST_NODE(&cdqb->dqb_hash);
1692 CFS_INIT_LIST_HEAD(&cdqb->dqb_list);
1694 cdqb->dqb_type = type;
1700 static struct chk_dqblk *
1701 cqget(struct super_block *sb, cfs_hlist_head_t *hash,
1702 cfs_list_t *list, qid_t id, int type, int first_check)
1704 cfs_hlist_head_t *head = hash + chkquot_hash(id, type);
1705 struct if_dqblk dqb;
1706 struct chk_dqblk *cdqb;
1709 cdqb = find_chkquot(head, id, type);
1713 cdqb = alloc_chkquot(id, type);
1718 rc = sb->s_qcop->get_dqblk(sb, type, id, &dqb);
1720 CERROR("get_dqblk of id %u, type %d failed: %d\n",
1723 DQBLK_COPY(cdqb, &dqb);
1724 cdqb->dqb_curspace = 0;
1725 cdqb->dqb_curinodes = 0;
1729 cfs_hlist_add_head(&cdqb->dqb_hash, head);
1730 cfs_list_add_tail(&cdqb->dqb_list, list);
1735 static inline int quota_onoff(struct super_block *sb, int cmd, int type, int qfmt)
1737 struct obd_quotactl *oqctl;
1740 OBD_ALLOC_PTR(oqctl);
1744 oqctl->qc_cmd = cmd;
1745 oqctl->qc_id = qfmt;
1746 oqctl->qc_type = type;
1747 rc = fsfilt_ext3_quotactl(sb, oqctl);
1749 OBD_FREE_PTR(oqctl);
1753 static inline int read_old_dqinfo(struct super_block *sb, int type,
1754 struct if_dqinfo *dqinfo)
1756 struct obd_quotactl *oqctl;
1760 OBD_ALLOC_PTR(oqctl);
1764 oqctl->qc_cmd = Q_GETINFO;
1765 oqctl->qc_type = type;
1766 rc = fsfilt_ext3_quotactl(sb, oqctl);
1768 ((struct obd_dqinfo *)dqinfo)[type] = oqctl->qc_dqinfo;
1770 OBD_FREE_PTR(oqctl);
1774 #ifndef HAVE_EXT4_LDISKFS
1775 static inline struct ext3_group_desc *
1776 get_group_desc(struct super_block *sb, int group, struct buffer_head **bh)
1778 unsigned long desc_block, desc;
1779 struct ext3_group_desc *gdp;
1781 desc_block = group / EXT3_DESC_PER_BLOCK(sb);
1782 desc = group % EXT3_DESC_PER_BLOCK(sb);
1783 gdp = (struct ext3_group_desc *)
1784 EXT3_SB(sb)->s_group_desc[desc_block]->b_data;
1789 static inline struct buffer_head *
1790 ext3_read_inode_bitmap(struct super_block *sb, unsigned long group)
1792 struct ext3_group_desc *desc;
1793 struct buffer_head *bh;
1795 desc = get_group_desc(sb, group, NULL);
1796 bh = sb_bread(sb, ext3_inode_bitmap(sb, desc));
1800 static __u32 ext3_itable_unused_count(struct super_block *sb,
1801 struct ext3_group_desc *bg) {
1802 return le16_to_cpu(bg->bg_itable_unused);
1805 #define get_group_desc ext3_get_group_desc
1809 cfs_hlist_head_t qckt_hash[NR_DQHASH]; /* quotacheck hash */
1810 cfs_list_t qckt_list; /* quotacheck list */
1811 int qckt_first_check[MAXQUOTAS]; /* 1 if no old quotafile */
1812 struct if_dqinfo qckt_dqinfo[MAXQUOTAS]; /* old dqinfo */
1815 static int add_inode_quota(struct inode *inode, struct qchk_ctxt *qctxt,
1816 struct obd_quotactl *oqc)
1818 struct chk_dqblk *cdqb[MAXQUOTAS] = { NULL, };
1820 qid_t qid[MAXQUOTAS];
1826 qid[USRQUOTA] = inode->i_uid;
1827 qid[GRPQUOTA] = inode->i_gid;
1829 if (S_ISDIR(inode->i_mode) ||
1830 S_ISREG(inode->i_mode) ||
1831 S_ISLNK(inode->i_mode))
1832 size = inode_get_bytes(inode);
1834 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
1835 if (!Q_TYPESET(oqc, cnt))
1838 cdqb[cnt] = cqget(inode->i_sb, qctxt->qckt_hash,
1839 &qctxt->qckt_list, qid[cnt], cnt,
1840 qctxt->qckt_first_check[cnt]);
1846 cdqb[cnt]->dqb_curspace += size;
1847 cdqb[cnt]->dqb_curinodes++;
1851 for (i = 0; i < cnt; i++) {
1852 if (!Q_TYPESET(oqc, i))
1855 cdqb[i]->dqb_curspace -= size;
1856 cdqb[i]->dqb_curinodes--;
1863 /* write dqinfo struct in a new quota file */
1864 static int v3_write_dqinfo(struct file *f, int type, struct if_dqinfo *info)
1866 struct v2_disk_dqinfo dqinfo;
1867 __u32 blocks = V2_DQTREEOFF + 1;
1868 loff_t offset = V2_DQINFOOFF;
1871 dqinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace);
1872 dqinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace);
1873 dqinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK &
1876 dqinfo.dqi_bgrace = cpu_to_le32(MAX_DQ_TIME);
1877 dqinfo.dqi_igrace = cpu_to_le32(MAX_IQ_TIME);
1878 dqinfo.dqi_flags = 0;
1881 dqinfo.dqi_blocks = cpu_to_le32(blocks);
1882 dqinfo.dqi_free_blk = 0;
1883 dqinfo.dqi_free_entry = 0;
1885 return cfs_user_write(f, (char *)&dqinfo, sizeof(dqinfo), &offset);
1888 static int v3_write_dqheader(struct file *f, int type)
1890 static const __u32 quota_magics[] = V2_INITQMAGICS;
1891 static const __u32 quota_versions[] = LUSTRE_INITQVERSIONS_V2;
1892 struct v2_disk_dqheader dqhead;
1895 CLASSERT(ARRAY_SIZE(quota_magics) == ARRAY_SIZE(quota_versions));
1896 LASSERT(0 <= type && type < ARRAY_SIZE(quota_magics));
1898 dqhead.dqh_magic = cpu_to_le32(quota_magics[type]);
1899 dqhead.dqh_version = cpu_to_le32(quota_versions[type]);
1901 return cfs_user_write(f, (char *)&dqhead, sizeof(dqhead), &offset);
1904 static int create_new_quota_files(struct qchk_ctxt *qctxt,
1905 struct obd_quotactl *oqc)
1910 for (i = 0; i < MAXQUOTAS; i++) {
1911 struct if_dqinfo *info = qctxt->qckt_first_check[i]?
1912 NULL : &qctxt->qckt_dqinfo[i];
1914 const char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1916 if (!Q_TYPESET(oqc, i))
1919 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1921 file = filp_open(name[i], O_RDWR | O_CREAT | O_TRUNC, 0644);
1924 CERROR("can't create %s file: rc = %d\n",
1929 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1930 CERROR("file %s is not regular", name[i]);
1931 filp_close(file, 0);
1932 GOTO(out, rc = -EINVAL);
1935 ll_vfs_dq_drop(file->f_dentry->d_inode);
1937 rc = v3_write_dqheader(file, i);
1939 filp_close(file, 0);
1943 rc = v3_write_dqinfo(file, i, info);
1944 filp_close(file, 0);
1954 static int commit_chkquot(struct super_block *sb, struct qchk_ctxt *qctxt,
1955 struct chk_dqblk *cdqb)
1957 struct obd_quotactl *oqc;
1966 now = cfs_time_current_sec();
1968 if (cdqb->dqb_bsoftlimit &&
1969 toqb(cdqb->dqb_curspace) >= cdqb->dqb_bsoftlimit &&
1972 now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_bgrace;
1974 if (cdqb->dqb_isoftlimit &&
1975 cdqb->dqb_curinodes >= cdqb->dqb_isoftlimit &&
1978 now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_igrace;
1980 cdqb->dqb_valid = QIF_ALL;
1982 oqc->qc_cmd = Q_SETQUOTA;
1983 oqc->qc_type = cdqb->dqb_type;
1984 oqc->qc_id = cdqb->dqb_id;
1985 DQBLK_COPY(&oqc->qc_dqblk, cdqb);
1987 rc = fsfilt_ext3_quotactl(sb, oqc);
1992 static int prune_chkquots(struct super_block *sb,
1993 struct qchk_ctxt *qctxt, int error)
1995 struct chk_dqblk *cdqb, *tmp;
1998 cfs_list_for_each_entry_safe(cdqb, tmp, &qctxt->qckt_list, dqb_list) {
2000 rc = commit_chkquot(sb, qctxt, cdqb);
2004 cfs_hlist_del_init(&cdqb->dqb_hash);
2005 cfs_list_del(&cdqb->dqb_list);
2012 #ifndef EXT3_FEATURE_RO_COMPAT_GDT_CSUM
2013 #define EXT3_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
2016 static int fsfilt_ext3_quotacheck(struct super_block *sb,
2017 struct obd_quotactl *oqc)
2019 struct ext3_sb_info *sbi = EXT3_SB(sb);
2020 int i, group, uninit_feat = 0;
2021 struct qchk_ctxt *qctxt;
2022 struct buffer_head *bitmap_bh = NULL;
2023 unsigned long ino, inode_inuse;
2024 struct inode *inode;
2028 /* turn on quota and read dqinfo if existed */
2029 OBD_ALLOC_PTR(qctxt);
2031 oqc->qc_stat = -ENOMEM;
2035 for (i = 0; i < NR_DQHASH; i++)
2036 CFS_INIT_HLIST_HEAD(&qctxt->qckt_hash[i]);
2037 CFS_INIT_LIST_HEAD(&qctxt->qckt_list);
2039 for (i = 0; i < MAXQUOTAS; i++) {
2040 if (!Q_TYPESET(oqc, i))
2043 rc = quota_onoff(sb, Q_QUOTAON, i, oqc->qc_id);
2044 if (!rc || rc == -EBUSY) {
2045 rc = read_old_dqinfo(sb, i, qctxt->qckt_dqinfo);
2048 } else if (rc == -ENOENT || rc == -EINVAL || rc == -EEXIST) {
2049 qctxt->qckt_first_check[i] = 1;
2054 if (EXT3_HAS_RO_COMPAT_FEATURE(sb, EXT3_FEATURE_RO_COMPAT_GDT_CSUM))
2055 /* This filesystem supports the uninit group feature */
2058 /* number of inodes that have been allocated */
2059 inode_inuse = sbi->s_inodes_per_group * sbi->s_groups_count -
2060 percpu_counter_sum(&sbi->s_freeinodes_counter);
2062 /* check quota and update in hash */
2063 for (group = 0; group < sbi->s_groups_count && inode_inuse > 0;
2065 unsigned long used_count = sbi->s_inodes_per_group;
2068 struct ext3_group_desc *desc;
2069 desc = get_group_desc(sb, group, NULL);
2073 /* we don't really need to take the group lock here,
2074 * but it may be useful if one day we support online
2076 #ifdef HAVE_EXT4_LDISKFS
2077 ext4_lock_group(sb, group);
2079 spin_lock(sb_bgl_lock(sbi, group));
2081 if (desc->bg_flags & cpu_to_le16(EXT3_BG_INODE_UNINIT)) {
2082 /* no inode in use in this group, just skip it */
2083 #ifdef HAVE_EXT4_LDISKFS
2084 ext3_unlock_group(sb, group);
2086 spin_unlock(sb_bgl_lock(sbi, group));
2091 used_count -= ext3_itable_unused_count(sb, desc);
2092 #ifdef HAVE_EXT4_LDISKFS
2093 ext3_unlock_group(sb, group);
2095 spin_unlock(sb_bgl_lock(sbi, group));
2099 ino = group * sbi->s_inodes_per_group + 1;
2100 bitmap_bh = ext3_read_inode_bitmap(sb, group);
2102 CERROR("%s: ext3_read_inode_bitmap group %d failed\n",
2108 while (i < used_count &&
2109 (i = ext3_find_next_bit(bitmap_bh->b_data,
2110 used_count, i)) < used_count) {
2113 ino = i + group * sbi->s_inodes_per_group;
2114 if (ino < sbi->s_first_ino)
2116 #if defined(HAVE_EXT4_LDISKFS) || !defined(HAVE_READ_INODE_IN_SBOPS)
2117 inode = ext3_iget(sb, ino);
2119 inode = iget(sb, ino);
2121 if (!inode || IS_ERR(inode))
2124 rc = add_inode_quota(inode, qctxt, oqc);
2134 /* read old quota limits from old quota file. (only for the user
2135 * has limits but hasn't file) */
2136 #ifdef HAVE_QUOTA_SUPPORT
2137 for (i = 0; i < MAXQUOTAS; i++) {
2139 struct dquot_id *dqid, *tmp;
2141 if (!Q_TYPESET(oqc, i))
2144 if (qctxt->qckt_first_check[i])
2148 LASSERT(sb_dqopt(sb)->files[i] != NULL);
2149 CFS_INIT_LIST_HEAD(&id_list);
2150 #ifndef KERNEL_SUPPORTS_QUOTA_READ
2151 rc = lustre_get_qids(sb_dqopt(sb)->files[i], NULL, i, &id_list);
2153 rc = lustre_get_qids(NULL, sb_dqopt(sb)->files[i], i, &id_list);
2156 CERROR("read old limits failed. (rc:%d)\n", rc);
2158 cfs_list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
2159 cfs_list_del_init(&dqid->di_link);
2162 cqget(sb, qctxt->qckt_hash, &qctxt->qckt_list,
2164 qctxt->qckt_first_check[i]);
2169 /* turn off quota cause we are to dump chk_dqblk to files */
2170 quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type, oqc->qc_id);
2172 rc = create_new_quota_files(qctxt, oqc);
2176 /* we use vfs functions to set dqblk, so turn quota on */
2177 rc = quota_onoff(sb, Q_QUOTAON, oqc->qc_type, oqc->qc_id);
2179 /* dump and free chk_dqblk */
2180 rc = prune_chkquots(sb, qctxt, rc);
2181 OBD_FREE_PTR(qctxt);
2183 /* turn off quota, `lfs quotacheck` will turn on when all
2184 * nodes quotacheck finish. */
2185 quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type, oqc->qc_id);
2189 CERROR("quotacheck failed: rc = %d\n", rc);
2194 static int fsfilt_ext3_quotainfo(struct lustre_quota_info *lqi, int type,
2200 if (lqi->qi_files[type] == NULL) {
2201 CERROR("operate qinfo before it's enabled!\n");
2207 rc = lustre_check_quota_file(lqi, type);
2210 rc = lustre_read_quota_info(lqi, type);
2213 rc = lustre_write_quota_info(lqi, type);
2215 case QFILE_INIT_INFO:
2216 rc = lustre_init_quota_info(lqi, type);
2220 CERROR("quota CONVERT command is not supported\n");
2224 CERROR("Unsupported admin quota file cmd %d\n"
2225 "Are lquota.ko and fsfilt_ldiskfs.ko modules in sync?\n",
2232 static int fsfilt_ext3_qids(struct file *file, struct inode *inode, int type,
2235 return lustre_get_qids(file, inode, type, list);
2238 static int fsfilt_ext3_dquot(struct lustre_dquot *dquot, int cmd)
2243 if (dquot->dq_info->qi_files[dquot->dq_type] == NULL) {
2244 CERROR("operate dquot before it's enabled!\n");
2249 case QFILE_RD_DQUOT:
2250 rc = lustre_read_dquot(dquot);
2252 case QFILE_WR_DQUOT:
2253 if (dquot->dq_dqb.dqb_ihardlimit ||
2254 dquot->dq_dqb.dqb_isoftlimit ||
2255 dquot->dq_dqb.dqb_bhardlimit ||
2256 dquot->dq_dqb.dqb_bsoftlimit)
2257 cfs_clear_bit(DQ_FAKE_B, &dquot->dq_flags);
2259 cfs_set_bit(DQ_FAKE_B, &dquot->dq_flags);
2261 rc = lustre_commit_dquot(dquot);
2266 CERROR("Unsupported admin quota file cmd %d\n", cmd);
2273 static int fsfilt_ext3_get_mblk(struct super_block *sb, int *count,
2274 struct inode *inode, int frags)
2276 #ifdef EXT3_EXT_HAS_NO_TREE
2277 struct ext3_ext_base *base = inode;
2279 struct ext3_extents_tree tree;
2280 struct ext3_ext_base *base = &tree;
2282 ext3_init_tree_desc(base, inode);
2284 /* for an ost_write request, it needs <#fragments> * <tree depth + 1>
2285 * metablocks at maxium b=16542 */
2286 *count = frags * (EXT_DEPTH(base) + 1) * EXT3_BLOCK_SIZE(sb);
2292 lvfs_sbdev_type fsfilt_ext3_journal_sbdev(struct super_block *sb)
2294 return (EXT3_SB(sb)->journal_bdev);
2296 EXPORT_SYMBOL(fsfilt_ext3_journal_sbdev);
2298 ssize_t lustre_read_quota(struct file *f, struct inode *inode, int type,
2299 char *buf, int count, loff_t pos)
2305 CERROR("lustre_read_quota failed for no quota file!\n");
2306 libcfs_debug_dumpstack(NULL);
2310 /* Support for both adm and op quota files must be provided */
2312 rc = fsfilt_ext3_read_record(f, buf, count, &p);
2313 rc = rc < 0 ? rc : p - pos;
2315 struct super_block *sb = inode->i_sb;
2316 rc = sb->s_op->quota_read(sb, type, buf, count, pos);
2321 ssize_t lustre_write_quota(struct file *f, char *buf, int count, loff_t pos)
2326 /* Only adm quota files are supported, op updates are handled by vfs */
2327 rc = fsfilt_ext3_write_record(f, buf, count, &p, 0);
2328 rc = rc < 0 ? rc : p - pos;
2333 void *lustre_quota_journal_start(struct inode *inode, int delete)
2336 unsigned block_count;
2339 /* each indirect block (+4) may become free, attaching to the
2340 * header list of free blocks (+1); the data block (+1) may
2341 * become a free block (+0) or a block with free dqentries (+0) */
2342 block_count = (4 + 1) + 1;
2343 handle = ext3_journal_start(inode,
2344 block_count*FSFILT_DATA_TRANS_BLOCKS(inode->i_sb)+2);
2346 /* indirect blocks are touched (+4), each causes file expansion (+0) or
2347 * freeblk reusage with a header update (+1); dqentry is either reused
2348 * causing update of the entry block (+1), prev (+1) and next (+1) or
2349 * a new block allocation (+1) with a header update (+1) */
2350 block_count = (4 + 1) + 3;
2351 handle = ext3_journal_start(inode,
2352 block_count*FSFILT_DATA_TRANS_BLOCKS(inode->i_sb)+2);
2359 void lustre_quota_journal_stop(void *handle)
2361 ext3_journal_stop((handle_t *)handle);
2364 static int ll_decode_fh_accept(void *context, struct dentry *de)
2369 #ifdef HAVE_EXPORTFS_DECODE_FH
2370 # define ll_exportfs_decode_fh(mnt, fid, len, type, acceptable, context) \
2371 exportfs_decode_fh(mnt, (struct fid*)(fid), len, type, \
2372 acceptable, context)
2374 # define ll_exportfs_decode_fh(mnt, fid, len, type, acceptable, context) \
2375 export_op_default.decode_fh((mnt)->mnt_sb, &(fid)->ino, len, \
2376 type, acceptable, context)
2377 # define FILEID_INO32_GEN 1
2378 extern struct export_operations export_op_default;
2381 struct dentry *fsfilt_ext3_fid2dentry(struct vfsmount *mnt,
2382 struct fsfilt_fid *fid, int ignore_gen)
2384 struct inode *inode;
2385 struct dentry *result;
2387 result = ll_exportfs_decode_fh(mnt, fid, 2, FILEID_INO32_GEN,
2388 ll_decode_fh_accept, NULL);
2389 if (IS_ERR(result)) {
2390 CDEBUG(D_DENTRY, "%s of %u/%u failed %ld\n", __func__,
2391 fid->ino, fid->gen, PTR_ERR(result));
2395 CDEBUG(D_DENTRY, "%s of %u/%u succeeded\n", __func__,
2396 fid->ino, fid->gen);
2397 inode = result->d_inode;
2401 if (inode->i_nlink == 0 &&
2402 inode->i_mode == 0 && LTIME_S(inode->i_ctime) == 0) {
2403 LCONSOLE_WARN("Found inode with zero nlink, mode and"
2404 " ctime -- this may indicate disk "
2405 "corruption (inode: %lu, link: %lu, "
2406 "count: %d)\n", inode->i_ino,
2407 (unsigned long)inode->i_nlink,
2408 atomic_read(&inode->i_count));
2411 if (fid->gen && inode->i_generation != fid->gen) {
2412 /* we didn't find the right inode.. */
2413 CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
2414 "count: %d, generation %u/%u\n",
2415 inode->i_ino, (unsigned long)inode->i_nlink,
2416 atomic_read(&inode->i_count), inode->i_generation,
2424 return ERR_PTR(-ENOENT);
2427 static struct fsfilt_operations fsfilt_ext3_ops = {
2429 .fs_owner = THIS_MODULE,
2430 .fs_getlabel = fsfilt_ext3_get_label,
2431 .fs_setlabel = fsfilt_ext3_set_label,
2432 .fs_uuid = fsfilt_ext3_uuid,
2433 .fs_start = fsfilt_ext3_start,
2434 .fs_brw_start = fsfilt_ext3_brw_start,
2435 .fs_extend = fsfilt_ext3_extend,
2436 .fs_commit = fsfilt_ext3_commit,
2437 .fs_commit_async = fsfilt_ext3_commit_async,
2438 .fs_commit_wait = fsfilt_ext3_commit_wait,
2439 .fs_setattr = fsfilt_ext3_setattr,
2440 .fs_iocontrol = fsfilt_ext3_iocontrol,
2441 .fs_set_md = fsfilt_ext3_set_md,
2442 .fs_get_md = fsfilt_ext3_get_md,
2443 .fs_readpage = fsfilt_ext3_readpage,
2444 .fs_add_journal_cb = fsfilt_ext3_add_journal_cb,
2445 .fs_statfs = fsfilt_ext3_statfs,
2446 .fs_sync = fsfilt_ext3_sync,
2447 .fs_map_inode_pages = fsfilt_ext3_map_inode_pages,
2448 .fs_write_record = fsfilt_ext3_write_record,
2449 .fs_read_record = fsfilt_ext3_read_record,
2450 .fs_setup = fsfilt_ext3_setup,
2451 .fs_send_bio = fsfilt_ext3_send_bio,
2452 .fs_get_op_len = fsfilt_ext3_get_op_len,
2453 #ifdef HAVE_DISK_INODE_VERSION
2454 .fs_get_version = fsfilt_ext3_get_version,
2455 .fs_set_version = fsfilt_ext3_set_version,
2457 #ifdef HAVE_QUOTA_SUPPORT
2458 .fs_quotactl = fsfilt_ext3_quotactl,
2459 .fs_quotacheck = fsfilt_ext3_quotacheck,
2460 .fs_quotainfo = fsfilt_ext3_quotainfo,
2461 .fs_qids = fsfilt_ext3_qids,
2462 .fs_dquot = fsfilt_ext3_dquot,
2463 .fs_get_mblk = fsfilt_ext3_get_mblk,
2465 .fs_journal_sbdev = fsfilt_ext3_journal_sbdev,
2466 .fs_fid2dentry = fsfilt_ext3_fid2dentry,
2469 static int __init fsfilt_ext3_init(void)
2473 fcb_cache = cfs_mem_cache_create("fsfilt_ext3_fcb",
2474 sizeof(struct fsfilt_cb_data), 0, 0);
2476 CERROR("error allocating fsfilt journal callback cache\n");
2477 GOTO(out, rc = -ENOMEM);
2480 rc = fsfilt_register_ops(&fsfilt_ext3_ops);
2483 int err = cfs_mem_cache_destroy(fcb_cache);
2484 LASSERTF(err == 0, "error destroying new cache: rc %d\n", err);
2490 static void __exit fsfilt_ext3_exit(void)
2494 fsfilt_unregister_ops(&fsfilt_ext3_ops);
2495 rc = cfs_mem_cache_destroy(fcb_cache);
2496 LASSERTF(rc == 0, "couldn't destroy fcb_cache slab\n");
2499 module_init(fsfilt_ext3_init);
2500 module_exit(fsfilt_ext3_exit);
2502 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2503 MODULE_DESCRIPTION("Lustre ext3 Filesystem Helper v0.1");
2504 MODULE_LICENSE("GPL");