2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "xfs_types.h"
24 #include "xfs_trans.h"
28 #include "xfs_dmapi.h"
29 #include "xfs_mount.h"
30 #include "xfs_bmap_btree.h"
31 #include "xfs_alloc_btree.h"
32 #include "xfs_ialloc_btree.h"
33 #include "xfs_dir2_sf.h"
34 #include "xfs_attr_sf.h"
35 #include "xfs_dinode.h"
36 #include "xfs_inode.h"
37 #include "xfs_ialloc.h"
38 #include "xfs_itable.h"
39 #include "xfs_error.h"
40 #include "xfs_btree.h"
47 return (ino == mp->m_sb.sb_rbmino || ino == mp->m_sb.sb_rsumino ||
48 (xfs_sb_version_hasquota(&mp->m_sb) &&
49 (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino)));
53 xfs_bulkstat_one_iget(
54 xfs_mount_t *mp, /* mount point for filesystem */
55 xfs_ino_t ino, /* inode number to get data for */
56 xfs_daddr_t bno, /* starting bno of inode cluster */
57 xfs_bstat_t *buf, /* return buffer */
58 int *stat) /* BULKSTAT_RV_... */
60 xfs_icdinode_t *dic; /* dinode core info pointer */
61 xfs_inode_t *ip; /* incore inode pointer */
65 error = xfs_iget(mp, NULL, ino,
66 XFS_IGET_BULKSTAT, XFS_ILOCK_SHARED, &ip, bno);
68 *stat = BULKSTAT_RV_NOTHING;
73 ASSERT(ip->i_imap.im_blkno != 0);
78 /* xfs_iget returns the following without needing
81 buf->bs_nlink = dic->di_nlink;
82 buf->bs_projid = dic->di_projid;
84 buf->bs_mode = dic->di_mode;
85 buf->bs_uid = dic->di_uid;
86 buf->bs_gid = dic->di_gid;
87 buf->bs_size = dic->di_size;
90 * We need to read the timestamps from the Linux inode because
91 * the VFS keeps writing directly into the inode structure instead
92 * of telling us about the updates.
94 buf->bs_atime.tv_sec = inode->i_atime.tv_sec;
95 buf->bs_atime.tv_nsec = inode->i_atime.tv_nsec;
96 buf->bs_mtime.tv_sec = inode->i_mtime.tv_sec;
97 buf->bs_mtime.tv_nsec = inode->i_mtime.tv_nsec;
98 buf->bs_ctime.tv_sec = inode->i_ctime.tv_sec;
99 buf->bs_ctime.tv_nsec = inode->i_ctime.tv_nsec;
101 buf->bs_xflags = xfs_ip2xflags(ip);
102 buf->bs_extsize = dic->di_extsize << mp->m_sb.sb_blocklog;
103 buf->bs_extents = dic->di_nextents;
104 buf->bs_gen = dic->di_gen;
105 memset(buf->bs_pad, 0, sizeof(buf->bs_pad));
106 buf->bs_dmevmask = dic->di_dmevmask;
107 buf->bs_dmstate = dic->di_dmstate;
108 buf->bs_aextents = dic->di_anextents;
110 switch (dic->di_format) {
111 case XFS_DINODE_FMT_DEV:
112 buf->bs_rdev = ip->i_df.if_u2.if_rdev;
113 buf->bs_blksize = BLKDEV_IOSIZE;
116 case XFS_DINODE_FMT_LOCAL:
117 case XFS_DINODE_FMT_UUID:
119 buf->bs_blksize = mp->m_sb.sb_blocksize;
122 case XFS_DINODE_FMT_EXTENTS:
123 case XFS_DINODE_FMT_BTREE:
125 buf->bs_blksize = mp->m_sb.sb_blocksize;
126 buf->bs_blocks = dic->di_nblocks + ip->i_delayed_blks;
130 xfs_iput(ip, XFS_ILOCK_SHARED);
135 xfs_bulkstat_one_dinode(
136 xfs_mount_t *mp, /* mount point for filesystem */
137 xfs_ino_t ino, /* inode number to get data for */
138 xfs_dinode_t *dic, /* dinode inode pointer */
139 xfs_bstat_t *buf) /* return buffer */
142 * The inode format changed when we moved the link count and
143 * made it 32 bits long. If this is an old format inode,
144 * convert it in memory to look like a new one. If it gets
145 * flushed to disk we will convert back before flushing or
146 * logging it. We zero out the new projid field and the old link
147 * count field. We'll handle clearing the pad field (the remains
148 * of the old uuid field) when we actually convert the inode to
149 * the new format. We don't change the version number so that we
150 * can distinguish this from a real new format inode.
152 if (dic->di_version == 1) {
153 buf->bs_nlink = be16_to_cpu(dic->di_onlink);
156 buf->bs_nlink = be32_to_cpu(dic->di_nlink);
157 buf->bs_projid = be16_to_cpu(dic->di_projid);
161 buf->bs_mode = be16_to_cpu(dic->di_mode);
162 buf->bs_uid = be32_to_cpu(dic->di_uid);
163 buf->bs_gid = be32_to_cpu(dic->di_gid);
164 buf->bs_size = be64_to_cpu(dic->di_size);
165 buf->bs_atime.tv_sec = be32_to_cpu(dic->di_atime.t_sec);
166 buf->bs_atime.tv_nsec = be32_to_cpu(dic->di_atime.t_nsec);
167 buf->bs_mtime.tv_sec = be32_to_cpu(dic->di_mtime.t_sec);
168 buf->bs_mtime.tv_nsec = be32_to_cpu(dic->di_mtime.t_nsec);
169 buf->bs_ctime.tv_sec = be32_to_cpu(dic->di_ctime.t_sec);
170 buf->bs_ctime.tv_nsec = be32_to_cpu(dic->di_ctime.t_nsec);
171 buf->bs_xflags = xfs_dic2xflags(dic);
172 buf->bs_extsize = be32_to_cpu(dic->di_extsize) << mp->m_sb.sb_blocklog;
173 buf->bs_extents = be32_to_cpu(dic->di_nextents);
174 buf->bs_gen = be32_to_cpu(dic->di_gen);
175 memset(buf->bs_pad, 0, sizeof(buf->bs_pad));
176 buf->bs_dmevmask = be32_to_cpu(dic->di_dmevmask);
177 buf->bs_dmstate = be16_to_cpu(dic->di_dmstate);
178 buf->bs_aextents = be16_to_cpu(dic->di_anextents);
180 switch (dic->di_format) {
181 case XFS_DINODE_FMT_DEV:
182 buf->bs_rdev = xfs_dinode_get_rdev(dic);
183 buf->bs_blksize = BLKDEV_IOSIZE;
186 case XFS_DINODE_FMT_LOCAL:
187 case XFS_DINODE_FMT_UUID:
189 buf->bs_blksize = mp->m_sb.sb_blocksize;
192 case XFS_DINODE_FMT_EXTENTS:
193 case XFS_DINODE_FMT_BTREE:
195 buf->bs_blksize = mp->m_sb.sb_blocksize;
196 buf->bs_blocks = be64_to_cpu(dic->di_nblocks);
201 /* Return 0 on success or positive error */
203 xfs_bulkstat_one_fmt(
204 void __user *ubuffer,
207 const xfs_bstat_t *buffer)
209 if (ubsize < sizeof(*buffer))
210 return XFS_ERROR(ENOMEM);
211 if (copy_to_user(ubuffer, buffer, sizeof(*buffer)))
212 return XFS_ERROR(EFAULT);
214 *ubused = sizeof(*buffer);
219 * Return stat information for one inode.
220 * Return 0 if ok, else errno.
222 int /* error status */
223 xfs_bulkstat_one_int(
224 xfs_mount_t *mp, /* mount point for filesystem */
225 xfs_ino_t ino, /* inode number to get data for */
226 void __user *buffer, /* buffer to place output in */
227 int ubsize, /* size of buffer */
228 bulkstat_one_fmt_pf formatter, /* formatter, copy to user */
229 xfs_daddr_t bno, /* starting bno of inode cluster */
230 int *ubused, /* bytes used by me */
231 void *dibuff, /* on-disk inode buffer */
232 int *stat) /* BULKSTAT_RV_... */
234 xfs_bstat_t *buf; /* return buffer */
235 int error = 0; /* error value */
236 xfs_dinode_t *dip; /* dinode inode pointer */
238 dip = (xfs_dinode_t *)dibuff;
239 *stat = BULKSTAT_RV_NOTHING;
241 if (!buffer || xfs_internal_inum(mp, ino))
242 return XFS_ERROR(EINVAL);
244 buf = kmem_alloc(sizeof(*buf), KM_SLEEP);
247 /* We're not being passed a pointer to a dinode. This happens
248 * if BULKSTAT_FG_IGET is selected. Do the iget.
250 error = xfs_bulkstat_one_iget(mp, ino, bno, buf, stat);
254 xfs_bulkstat_one_dinode(mp, ino, dip, buf);
257 error = formatter(buffer, ubsize, ubused, buf);
261 *stat = BULKSTAT_RV_DIDONE;
270 xfs_mount_t *mp, /* mount point for filesystem */
271 xfs_ino_t ino, /* inode number to get data for */
272 void __user *buffer, /* buffer to place output in */
273 int ubsize, /* size of buffer */
274 void *private_data, /* my private data */
275 xfs_daddr_t bno, /* starting bno of inode cluster */
276 int *ubused, /* bytes used by me */
277 void *dibuff, /* on-disk inode buffer */
278 int *stat) /* BULKSTAT_RV_... */
280 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
281 xfs_bulkstat_one_fmt, bno,
282 ubused, dibuff, stat);
286 * Test to see whether we can use the ondisk inode directly, based
287 * on the given bulkstat flags, filling in dipp accordingly.
288 * Returns zero if the inode is dodgey.
291 xfs_bulkstat_use_dinode(
299 unsigned int aformat;
302 if (!bp || (flags & BULKSTAT_FG_IGET))
304 dip = (xfs_dinode_t *)
305 xfs_buf_offset(bp, clustidx << mp->m_sb.sb_inodelog);
307 * Check the buffer containing the on-disk inode for di_mode == 0.
308 * This is to prevent xfs_bulkstat from picking up just reclaimed
309 * inodes that have their in-core state initialized but not flushed
310 * to disk yet. This is a temporary hack that would require a proper
313 if (be16_to_cpu(dip->di_magic) != XFS_DINODE_MAGIC ||
314 !XFS_DINODE_GOOD_VERSION(dip->di_version) ||
317 if (flags & BULKSTAT_FG_QUICK) {
321 /* BULKSTAT_FG_INLINE: if attr fork is local, or not there, use it */
322 aformat = dip->di_aformat;
323 if ((XFS_DFORK_Q(dip) == 0) ||
324 (aformat == XFS_DINODE_FMT_LOCAL) ||
325 (aformat == XFS_DINODE_FMT_EXTENTS && !dip->di_anextents)) {
332 #define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size)
335 * Return stat information in bulk (by-inode) for the filesystem.
337 int /* error status */
339 xfs_mount_t *mp, /* mount point for filesystem */
340 xfs_ino_t *lastinop, /* last inode returned */
341 int *ubcountp, /* size of buffer/count returned */
342 bulkstat_one_pf formatter, /* func that'd fill a single buf */
343 void *private_data,/* private data for formatter */
344 size_t statstruct_size, /* sizeof struct filling */
345 char __user *ubuffer, /* buffer with inode stats */
346 int flags, /* defined in xfs_itable.h */
347 int *done) /* 1 if there are more stats to get */
349 xfs_agblock_t agbno=0;/* allocation group block number */
350 xfs_buf_t *agbp; /* agi header buffer */
351 xfs_agi_t *agi; /* agi header data */
352 xfs_agino_t agino; /* inode # in allocation group */
353 xfs_agnumber_t agno; /* allocation group number */
354 xfs_daddr_t bno; /* inode cluster start daddr */
355 int chunkidx; /* current index into inode chunk */
356 int clustidx; /* current index into inode cluster */
357 xfs_btree_cur_t *cur; /* btree cursor for ialloc btree */
358 int end_of_ag; /* set if we've seen the ag end */
359 int error; /* error code */
360 int fmterror;/* bulkstat formatter result */
361 int i; /* loop index */
362 int icount; /* count of inodes good in irbuf */
363 size_t irbsize; /* size of irec buffer in bytes */
364 xfs_ino_t ino; /* inode number (filesystem) */
365 xfs_inobt_rec_incore_t *irbp; /* current irec buffer pointer */
366 xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */
367 xfs_inobt_rec_incore_t *irbufend; /* end of good irec buffer entries */
368 xfs_ino_t lastino; /* last inode number returned */
369 int nbcluster; /* # of blocks in a cluster */
370 int nicluster; /* # of inodes in a cluster */
371 int nimask; /* mask for inode clusters */
372 int nirbuf; /* size of irbuf */
373 int rval; /* return value error code */
374 int tmp; /* result value from btree calls */
375 int ubcount; /* size of user's buffer */
376 int ubleft; /* bytes left in user's buffer */
377 char __user *ubufp; /* pointer into user's buffer */
378 int ubelem; /* spaces used in user's buffer */
379 int ubused; /* bytes used by formatter */
380 xfs_buf_t *bp; /* ptr to on-disk inode cluster buf */
381 xfs_dinode_t *dip; /* ptr into bp for specific inode */
384 * Get the last inode value, see if there's nothing to do.
386 ino = (xfs_ino_t)*lastinop;
389 agno = XFS_INO_TO_AGNO(mp, ino);
390 agino = XFS_INO_TO_AGINO(mp, ino);
391 if (agno >= mp->m_sb.sb_agcount ||
392 ino != XFS_AGINO_TO_INO(mp, agno, agino)) {
397 if (!ubcountp || *ubcountp <= 0) {
400 ubcount = *ubcountp; /* statstruct's */
401 ubleft = ubcount * statstruct_size; /* bytes */
402 *ubcountp = ubelem = 0;
406 nicluster = mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp) ?
407 mp->m_sb.sb_inopblock :
408 (XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog);
409 nimask = ~(nicluster - 1);
410 nbcluster = nicluster >> mp->m_sb.sb_inopblog;
411 irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4,
412 KM_SLEEP | KM_MAYFAIL | KM_LARGE);
413 nirbuf = irbsize / sizeof(*irbuf);
416 * Loop over the allocation groups, starting from the last
417 * inode returned; 0 means start of the allocation group.
420 while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) {
423 down_read(&mp->m_peraglock);
424 error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
425 up_read(&mp->m_peraglock);
428 * Skip this allocation group and go to the next one.
434 agi = XFS_BUF_TO_AGI(agbp);
436 * Allocate and initialize a btree cursor for ialloc btree.
438 cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
440 irbufend = irbuf + nirbuf;
443 * If we're returning in the middle of an allocation group,
444 * we need to get the remainder of the chunk we're in.
447 xfs_inobt_rec_incore_t r;
450 * Lookup the inode chunk that this inode lives in.
452 error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE,
454 if (!error && /* no I/O error */
455 tmp && /* lookup succeeded */
456 /* got the record, should always work */
457 !(error = xfs_inobt_get_rec(cur, &r, &i)) &&
459 /* this is the right chunk */
460 agino < r.ir_startino + XFS_INODES_PER_CHUNK &&
461 /* lastino was not last in chunk */
462 (chunkidx = agino - r.ir_startino + 1) <
463 XFS_INODES_PER_CHUNK &&
464 /* there are some left allocated */
465 xfs_inobt_maskn(chunkidx,
466 XFS_INODES_PER_CHUNK - chunkidx) &
469 * Grab the chunk record. Mark all the
470 * uninteresting inodes (because they're
471 * before our start point) free.
473 for (i = 0; i < chunkidx; i++) {
474 if (XFS_INOBT_MASK(i) & ~r.ir_free)
477 r.ir_free |= xfs_inobt_maskn(0, chunkidx);
478 irbp->ir_startino = r.ir_startino;
479 irbp->ir_freecount = r.ir_freecount;
480 irbp->ir_free = r.ir_free;
482 agino = r.ir_startino + XFS_INODES_PER_CHUNK;
483 icount = XFS_INODES_PER_CHUNK - r.ir_freecount;
486 * If any of those tests failed, bump the
487 * inode number (just in case).
493 * In any case, increment to the next record.
496 error = xfs_btree_increment(cur, 0, &tmp);
499 * Start of ag. Lookup the first inode chunk.
501 error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &tmp);
505 * Loop through inode btree records in this ag,
506 * until we run out of inodes or space in the buffer.
508 while (irbp < irbufend && icount < ubcount) {
509 xfs_inobt_rec_incore_t r;
512 * Loop as long as we're unable to read the
516 agino += XFS_INODES_PER_CHUNK;
517 if (XFS_AGINO_TO_AGBNO(mp, agino) >=
518 be32_to_cpu(agi->agi_length))
520 error = xfs_inobt_lookup(cur, agino,
521 XFS_LOOKUP_GE, &tmp);
525 * If ran off the end of the ag either with an error,
526 * or the normal way, set end and stop collecting.
533 error = xfs_inobt_get_rec(cur, &r, &i);
534 if (error || i == 0) {
540 * If this chunk has any allocated inodes, save it.
541 * Also start read-ahead now for this chunk.
543 if (r.ir_freecount < XFS_INODES_PER_CHUNK) {
545 * Loop over all clusters in the next chunk.
546 * Do a readahead if there are any allocated
547 * inodes in that cluster.
549 agbno = XFS_AGINO_TO_AGBNO(mp, r.ir_startino);
551 chunkidx < XFS_INODES_PER_CHUNK;
552 chunkidx += nicluster,
553 agbno += nbcluster) {
554 if (xfs_inobt_maskn(chunkidx, nicluster)
556 xfs_btree_reada_bufs(mp, agno,
559 irbp->ir_startino = r.ir_startino;
560 irbp->ir_freecount = r.ir_freecount;
561 irbp->ir_free = r.ir_free;
563 icount += XFS_INODES_PER_CHUNK - r.ir_freecount;
566 * Set agino to after this chunk and bump the cursor.
568 agino = r.ir_startino + XFS_INODES_PER_CHUNK;
569 error = xfs_btree_increment(cur, 0, &tmp);
573 * Drop the btree buffers and the agi buffer.
574 * We can't hold any of the locks these represent
577 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
580 * Now format all the good inodes into the user's buffer.
584 irbp < irbufend && XFS_BULKSTAT_UBLEFT(ubleft); irbp++) {
586 * Now process this chunk of inodes.
588 for (agino = irbp->ir_startino, chunkidx = clustidx = 0;
589 XFS_BULKSTAT_UBLEFT(ubleft) &&
590 irbp->ir_freecount < XFS_INODES_PER_CHUNK;
591 chunkidx++, clustidx++, agino++) {
592 ASSERT(chunkidx < XFS_INODES_PER_CHUNK);
594 * Recompute agbno if this is the
595 * first inode of the cluster.
597 * Careful with clustidx. There can be
598 * multiple clusters per chunk, a single
599 * cluster per chunk or a cluster that has
600 * inodes represented from several different
601 * chunks (if blocksize is large).
603 * Because of this, the starting clustidx is
604 * initialized to zero in this loop but must
605 * later be reset after reading in the cluster
608 if ((chunkidx & (nicluster - 1)) == 0) {
609 agbno = XFS_AGINO_TO_AGBNO(mp,
611 ((chunkidx & nimask) >>
612 mp->m_sb.sb_inopblog);
614 if (flags & (BULKSTAT_FG_QUICK |
615 BULKSTAT_FG_INLINE)) {
618 ino = XFS_AGINO_TO_INO(mp, agno,
620 bno = XFS_AGB_TO_DADDR(mp, agno,
624 * Get the inode cluster buffer
629 error = xfs_inotobp(mp, NULL, ino, &dip,
634 clustidx = offset / mp->m_sb.sb_inodesize;
635 if (XFS_TEST_ERROR(error != 0,
636 mp, XFS_ERRTAG_BULKSTAT_READ_CHUNK,
637 XFS_RANDOM_BULKSTAT_READ_CHUNK)) {
645 ino = XFS_AGINO_TO_INO(mp, agno, agino);
646 bno = XFS_AGB_TO_DADDR(mp, agno, agbno);
648 * Skip if this inode is free.
650 if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) {
655 * Count used inodes as free so we can tell
656 * when the chunk is used up.
658 irbp->ir_freecount++;
659 if (!xfs_bulkstat_use_dinode(mp, flags, bp,
665 * If we need to do an iget, cannot hold bp.
666 * Drop it, until starting the next cluster.
668 if ((flags & BULKSTAT_FG_INLINE) && !dip) {
675 * Get the inode and fill in a single buffer.
676 * BULKSTAT_FG_QUICK uses dip to fill it in.
677 * BULKSTAT_FG_IGET uses igets.
678 * BULKSTAT_FG_INLINE uses dip if we have an
679 * inline attr fork, else igets.
680 * See: xfs_bulkstat_one & xfs_dm_bulkstat_one.
681 * This is also used to count inodes/blks, etc
682 * in xfs_qm_quotacheck.
684 ubused = statstruct_size;
685 error = formatter(mp, ino, ubufp,
686 ubleft, private_data,
687 bno, &ubused, dip, &fmterror);
688 if (fmterror == BULKSTAT_RV_NOTHING) {
689 if (error && error != ENOENT &&
698 if (fmterror == BULKSTAT_RV_GIVEUP) {
718 * Set up for the next loop iteration.
720 if (XFS_BULKSTAT_UBLEFT(ubleft)) {
725 agino = XFS_INO_TO_AGINO(mp, lastino);
730 * Done, we're either out of filesystem or space to put the data.
735 * Found some inodes, return them now and return the error next time.
739 if (agno >= mp->m_sb.sb_agcount) {
741 * If we ran out of filesystem, mark lastino as off
742 * the end of the filesystem, so the next call
743 * will return immediately.
745 *lastinop = (xfs_ino_t)XFS_AGINO_TO_INO(mp, agno, 0);
748 *lastinop = (xfs_ino_t)lastino;
754 * Return stat information in bulk (by-inode) for the filesystem.
755 * Special case for non-sequential one inode bulkstat.
757 int /* error status */
759 xfs_mount_t *mp, /* mount point for filesystem */
760 xfs_ino_t *lastinop, /* inode to return */
761 char __user *buffer, /* buffer with inode stats */
762 int *done) /* 1 if there are more stats to get */
764 int count; /* count value for bulkstat call */
765 int error; /* return value */
766 xfs_ino_t ino; /* filesystem inode number */
767 int res; /* result from bs1 */
770 * note that requesting valid inode numbers which are not allocated
771 * to inodes will most likely cause xfs_itobp to generate warning
772 * messages about bad magic numbers. This is ok. The fact that
773 * the inode isn't actually an inode is handled by the
774 * error check below. Done this way to make the usual case faster
775 * at the expense of the error case.
778 ino = (xfs_ino_t)*lastinop;
779 error = xfs_bulkstat_one(mp, ino, buffer, sizeof(xfs_bstat_t),
780 NULL, 0, NULL, NULL, &res);
783 * Special case way failed, do it the "long" way
784 * to see if that works.
788 if (xfs_bulkstat(mp, lastinop, &count, xfs_bulkstat_one,
789 NULL, sizeof(xfs_bstat_t), buffer,
790 BULKSTAT_FG_IGET, done))
792 if (count == 0 || (xfs_ino_t)*lastinop != ino)
793 return error == EFSCORRUPTED ?
794 XFS_ERROR(EINVAL) : error;
804 void __user *ubuffer, /* buffer to write to */
805 const xfs_inogrp_t *buffer, /* buffer to read from */
806 long count, /* # of elements to read */
807 long *written) /* # of bytes written */
809 if (copy_to_user(ubuffer, buffer, count * sizeof(*buffer)))
811 *written = count * sizeof(*buffer);
816 * Return inode number table for the filesystem.
818 int /* error status */
820 xfs_mount_t *mp, /* mount point for filesystem */
821 xfs_ino_t *lastino, /* last inode returned */
822 int *count, /* size of buffer/count returned */
823 void __user *ubuffer,/* buffer with inode descriptions */
824 inumbers_fmt_pf formatter)
830 xfs_inogrp_t *buffer;
832 xfs_btree_cur_t *cur;
834 xfs_inobt_rec_incore_t r;
840 ino = (xfs_ino_t)*lastino;
841 agno = XFS_INO_TO_AGNO(mp, ino);
842 agino = XFS_INO_TO_AGINO(mp, ino);
845 bcount = MIN(left, (int)(PAGE_SIZE / sizeof(*buffer)));
846 buffer = kmem_alloc(bcount * sizeof(*buffer), KM_SLEEP);
850 while (left > 0 && agno < mp->m_sb.sb_agcount) {
852 down_read(&mp->m_peraglock);
853 error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
854 up_read(&mp->m_peraglock);
857 * If we can't read the AGI of this ag,
858 * then just skip to the next one.
866 cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
867 error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_GE,
870 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
875 * Move up the last inode in the current
876 * chunk. The lookup_ge will always get
877 * us the first inode in the next chunk.
879 agino += XFS_INODES_PER_CHUNK - 1;
883 error = xfs_inobt_get_rec(cur, &r, &i);
884 if (error || i == 0) {
887 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
893 agino = r.ir_startino + XFS_INODES_PER_CHUNK - 1;
894 buffer[bufidx].xi_startino =
895 XFS_AGINO_TO_INO(mp, agno, r.ir_startino);
896 buffer[bufidx].xi_alloccount =
897 XFS_INODES_PER_CHUNK - r.ir_freecount;
898 buffer[bufidx].xi_allocmask = ~r.ir_free;
901 if (bufidx == bcount) {
903 if (formatter(ubuffer, buffer, bufidx, &written)) {
904 error = XFS_ERROR(EFAULT);
912 error = xfs_btree_increment(cur, 0, &tmp);
914 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
919 * The agino value has already been bumped.
920 * Just try to skip up to it.
922 agino += XFS_INODES_PER_CHUNK;
930 if (formatter(ubuffer, buffer, bufidx, &written))
931 error = XFS_ERROR(EFAULT);
935 *lastino = XFS_AGINO_TO_INO(mp, agno, agino);
939 xfs_btree_del_cursor(cur, (error ? XFS_BTREE_ERROR :