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 */
64 error
= xfs_iget(mp
, NULL
, ino
,
65 XFS_IGET_BULKSTAT
, XFS_ILOCK_SHARED
, &ip
, bno
);
67 *stat
= BULKSTAT_RV_NOTHING
;
72 ASSERT(ip
->i_blkno
!= (xfs_daddr_t
)0);
76 /* xfs_iget returns the following without needing
79 buf
->bs_nlink
= dic
->di_nlink
;
80 buf
->bs_projid
= dic
->di_projid
;
82 buf
->bs_mode
= dic
->di_mode
;
83 buf
->bs_uid
= dic
->di_uid
;
84 buf
->bs_gid
= dic
->di_gid
;
85 buf
->bs_size
= dic
->di_size
;
86 vn_atime_to_bstime(VFS_I(ip
), &buf
->bs_atime
);
87 buf
->bs_mtime
.tv_sec
= dic
->di_mtime
.t_sec
;
88 buf
->bs_mtime
.tv_nsec
= dic
->di_mtime
.t_nsec
;
89 buf
->bs_ctime
.tv_sec
= dic
->di_ctime
.t_sec
;
90 buf
->bs_ctime
.tv_nsec
= dic
->di_ctime
.t_nsec
;
91 buf
->bs_xflags
= xfs_ip2xflags(ip
);
92 buf
->bs_extsize
= dic
->di_extsize
<< mp
->m_sb
.sb_blocklog
;
93 buf
->bs_extents
= dic
->di_nextents
;
94 buf
->bs_gen
= dic
->di_gen
;
95 memset(buf
->bs_pad
, 0, sizeof(buf
->bs_pad
));
96 buf
->bs_dmevmask
= dic
->di_dmevmask
;
97 buf
->bs_dmstate
= dic
->di_dmstate
;
98 buf
->bs_aextents
= dic
->di_anextents
;
100 switch (dic
->di_format
) {
101 case XFS_DINODE_FMT_DEV
:
102 buf
->bs_rdev
= ip
->i_df
.if_u2
.if_rdev
;
103 buf
->bs_blksize
= BLKDEV_IOSIZE
;
106 case XFS_DINODE_FMT_LOCAL
:
107 case XFS_DINODE_FMT_UUID
:
109 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
112 case XFS_DINODE_FMT_EXTENTS
:
113 case XFS_DINODE_FMT_BTREE
:
115 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
116 buf
->bs_blocks
= dic
->di_nblocks
+ ip
->i_delayed_blks
;
120 xfs_iput(ip
, XFS_ILOCK_SHARED
);
125 xfs_bulkstat_one_dinode(
126 xfs_mount_t
*mp
, /* mount point for filesystem */
127 xfs_ino_t ino
, /* inode number to get data for */
128 xfs_dinode_t
*dip
, /* dinode inode pointer */
129 xfs_bstat_t
*buf
) /* return buffer */
131 xfs_dinode_core_t
*dic
; /* dinode core info pointer */
136 * The inode format changed when we moved the link count and
137 * made it 32 bits long. If this is an old format inode,
138 * convert it in memory to look like a new one. If it gets
139 * flushed to disk we will convert back before flushing or
140 * logging it. We zero out the new projid field and the old link
141 * count field. We'll handle clearing the pad field (the remains
142 * of the old uuid field) when we actually convert the inode to
143 * the new format. We don't change the version number so that we
144 * can distinguish this from a real new format inode.
146 if (dic
->di_version
== XFS_DINODE_VERSION_1
) {
147 buf
->bs_nlink
= be16_to_cpu(dic
->di_onlink
);
150 buf
->bs_nlink
= be32_to_cpu(dic
->di_nlink
);
151 buf
->bs_projid
= be16_to_cpu(dic
->di_projid
);
155 buf
->bs_mode
= be16_to_cpu(dic
->di_mode
);
156 buf
->bs_uid
= be32_to_cpu(dic
->di_uid
);
157 buf
->bs_gid
= be32_to_cpu(dic
->di_gid
);
158 buf
->bs_size
= be64_to_cpu(dic
->di_size
);
159 buf
->bs_atime
.tv_sec
= be32_to_cpu(dic
->di_atime
.t_sec
);
160 buf
->bs_atime
.tv_nsec
= be32_to_cpu(dic
->di_atime
.t_nsec
);
161 buf
->bs_mtime
.tv_sec
= be32_to_cpu(dic
->di_mtime
.t_sec
);
162 buf
->bs_mtime
.tv_nsec
= be32_to_cpu(dic
->di_mtime
.t_nsec
);
163 buf
->bs_ctime
.tv_sec
= be32_to_cpu(dic
->di_ctime
.t_sec
);
164 buf
->bs_ctime
.tv_nsec
= be32_to_cpu(dic
->di_ctime
.t_nsec
);
165 buf
->bs_xflags
= xfs_dic2xflags(dip
);
166 buf
->bs_extsize
= be32_to_cpu(dic
->di_extsize
) << mp
->m_sb
.sb_blocklog
;
167 buf
->bs_extents
= be32_to_cpu(dic
->di_nextents
);
168 buf
->bs_gen
= be32_to_cpu(dic
->di_gen
);
169 memset(buf
->bs_pad
, 0, sizeof(buf
->bs_pad
));
170 buf
->bs_dmevmask
= be32_to_cpu(dic
->di_dmevmask
);
171 buf
->bs_dmstate
= be16_to_cpu(dic
->di_dmstate
);
172 buf
->bs_aextents
= be16_to_cpu(dic
->di_anextents
);
174 switch (dic
->di_format
) {
175 case XFS_DINODE_FMT_DEV
:
176 buf
->bs_rdev
= be32_to_cpu(dip
->di_u
.di_dev
);
177 buf
->bs_blksize
= BLKDEV_IOSIZE
;
180 case XFS_DINODE_FMT_LOCAL
:
181 case XFS_DINODE_FMT_UUID
:
183 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
186 case XFS_DINODE_FMT_EXTENTS
:
187 case XFS_DINODE_FMT_BTREE
:
189 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
190 buf
->bs_blocks
= be64_to_cpu(dic
->di_nblocks
);
196 xfs_bulkstat_one_fmt(
197 void __user
*ubuffer
,
198 const xfs_bstat_t
*buffer
)
200 if (copy_to_user(ubuffer
, buffer
, sizeof(*buffer
)))
202 return sizeof(*buffer
);
206 * Return stat information for one inode.
207 * Return 0 if ok, else errno.
209 int /* error status */
211 xfs_mount_t
*mp
, /* mount point for filesystem */
212 xfs_ino_t ino
, /* inode number to get data for */
213 void __user
*buffer
, /* buffer to place output in */
214 int ubsize
, /* size of buffer */
215 void *private_data
, /* my private data */
216 xfs_daddr_t bno
, /* starting bno of inode cluster */
217 int *ubused
, /* bytes used by me */
218 void *dibuff
, /* on-disk inode buffer */
219 int *stat
) /* BULKSTAT_RV_... */
221 xfs_bstat_t
*buf
; /* return buffer */
222 int error
= 0; /* error value */
223 xfs_dinode_t
*dip
; /* dinode inode pointer */
224 bulkstat_one_fmt_pf formatter
= private_data
? : xfs_bulkstat_one_fmt
;
226 dip
= (xfs_dinode_t
*)dibuff
;
227 *stat
= BULKSTAT_RV_NOTHING
;
229 if (!buffer
|| xfs_internal_inum(mp
, ino
))
230 return XFS_ERROR(EINVAL
);
231 if (ubsize
< sizeof(*buf
))
232 return XFS_ERROR(ENOMEM
);
234 buf
= kmem_alloc(sizeof(*buf
), KM_SLEEP
);
237 /* We're not being passed a pointer to a dinode. This happens
238 * if BULKSTAT_FG_IGET is selected. Do the iget.
240 error
= xfs_bulkstat_one_iget(mp
, ino
, bno
, buf
, stat
);
244 xfs_bulkstat_one_dinode(mp
, ino
, dip
, buf
);
247 error
= formatter(buffer
, buf
);
253 *stat
= BULKSTAT_RV_DIDONE
;
263 * Test to see whether we can use the ondisk inode directly, based
264 * on the given bulkstat flags, filling in dipp accordingly.
265 * Returns zero if the inode is dodgey.
268 xfs_bulkstat_use_dinode(
276 unsigned int aformat
;
279 if (!bp
|| (flags
& BULKSTAT_FG_IGET
))
281 dip
= (xfs_dinode_t
*)
282 xfs_buf_offset(bp
, clustidx
<< mp
->m_sb
.sb_inodelog
);
284 * Check the buffer containing the on-disk inode for di_mode == 0.
285 * This is to prevent xfs_bulkstat from picking up just reclaimed
286 * inodes that have their in-core state initialized but not flushed
287 * to disk yet. This is a temporary hack that would require a proper
290 if (be16_to_cpu(dip
->di_core
.di_magic
) != XFS_DINODE_MAGIC
||
291 !XFS_DINODE_GOOD_VERSION(dip
->di_core
.di_version
) ||
292 !dip
->di_core
.di_mode
)
294 if (flags
& BULKSTAT_FG_QUICK
) {
298 /* BULKSTAT_FG_INLINE: if attr fork is local, or not there, use it */
299 aformat
= dip
->di_core
.di_aformat
;
300 if ((XFS_DFORK_Q(dip
) == 0) ||
301 (aformat
== XFS_DINODE_FMT_LOCAL
) ||
302 (aformat
== XFS_DINODE_FMT_EXTENTS
&& !dip
->di_core
.di_anextents
)) {
309 #define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size)
312 * Return stat information in bulk (by-inode) for the filesystem.
314 int /* error status */
316 xfs_mount_t
*mp
, /* mount point for filesystem */
317 xfs_ino_t
*lastinop
, /* last inode returned */
318 int *ubcountp
, /* size of buffer/count returned */
319 bulkstat_one_pf formatter
, /* func that'd fill a single buf */
320 void *private_data
,/* private data for formatter */
321 size_t statstruct_size
, /* sizeof struct filling */
322 char __user
*ubuffer
, /* buffer with inode stats */
323 int flags
, /* defined in xfs_itable.h */
324 int *done
) /* 1 if there are more stats to get */
326 xfs_agblock_t agbno
=0;/* allocation group block number */
327 xfs_buf_t
*agbp
; /* agi header buffer */
328 xfs_agi_t
*agi
; /* agi header data */
329 xfs_agino_t agino
; /* inode # in allocation group */
330 xfs_agnumber_t agno
; /* allocation group number */
331 xfs_daddr_t bno
; /* inode cluster start daddr */
332 int chunkidx
; /* current index into inode chunk */
333 int clustidx
; /* current index into inode cluster */
334 xfs_btree_cur_t
*cur
; /* btree cursor for ialloc btree */
335 int end_of_ag
; /* set if we've seen the ag end */
336 int error
; /* error code */
337 int fmterror
;/* bulkstat formatter result */
338 __int32_t gcnt
; /* current btree rec's count */
339 xfs_inofree_t gfree
; /* current btree rec's free mask */
340 xfs_agino_t gino
; /* current btree rec's start inode */
341 int i
; /* loop index */
342 int icount
; /* count of inodes good in irbuf */
343 size_t irbsize
; /* size of irec buffer in bytes */
344 xfs_ino_t ino
; /* inode number (filesystem) */
345 xfs_inobt_rec_incore_t
*irbp
; /* current irec buffer pointer */
346 xfs_inobt_rec_incore_t
*irbuf
; /* start of irec buffer */
347 xfs_inobt_rec_incore_t
*irbufend
; /* end of good irec buffer entries */
348 xfs_ino_t lastino
; /* last inode number returned */
349 int nbcluster
; /* # of blocks in a cluster */
350 int nicluster
; /* # of inodes in a cluster */
351 int nimask
; /* mask for inode clusters */
352 int nirbuf
; /* size of irbuf */
353 int rval
; /* return value error code */
354 int tmp
; /* result value from btree calls */
355 int ubcount
; /* size of user's buffer */
356 int ubleft
; /* bytes left in user's buffer */
357 char __user
*ubufp
; /* pointer into user's buffer */
358 int ubelem
; /* spaces used in user's buffer */
359 int ubused
; /* bytes used by formatter */
360 xfs_buf_t
*bp
; /* ptr to on-disk inode cluster buf */
361 xfs_dinode_t
*dip
; /* ptr into bp for specific inode */
364 * Get the last inode value, see if there's nothing to do.
366 ino
= (xfs_ino_t
)*lastinop
;
369 agno
= XFS_INO_TO_AGNO(mp
, ino
);
370 agino
= XFS_INO_TO_AGINO(mp
, ino
);
371 if (agno
>= mp
->m_sb
.sb_agcount
||
372 ino
!= XFS_AGINO_TO_INO(mp
, agno
, agino
)) {
377 if (!ubcountp
|| *ubcountp
<= 0) {
380 ubcount
= *ubcountp
; /* statstruct's */
381 ubleft
= ubcount
* statstruct_size
; /* bytes */
382 *ubcountp
= ubelem
= 0;
386 nicluster
= mp
->m_sb
.sb_blocksize
>= XFS_INODE_CLUSTER_SIZE(mp
) ?
387 mp
->m_sb
.sb_inopblock
:
388 (XFS_INODE_CLUSTER_SIZE(mp
) >> mp
->m_sb
.sb_inodelog
);
389 nimask
= ~(nicluster
- 1);
390 nbcluster
= nicluster
>> mp
->m_sb
.sb_inopblog
;
391 irbuf
= kmem_zalloc_greedy(&irbsize
, PAGE_SIZE
, PAGE_SIZE
* 4,
392 KM_SLEEP
| KM_MAYFAIL
| KM_LARGE
);
393 nirbuf
= irbsize
/ sizeof(*irbuf
);
396 * Loop over the allocation groups, starting from the last
397 * inode returned; 0 means start of the allocation group.
400 while (XFS_BULKSTAT_UBLEFT(ubleft
) && agno
< mp
->m_sb
.sb_agcount
) {
403 down_read(&mp
->m_peraglock
);
404 error
= xfs_ialloc_read_agi(mp
, NULL
, agno
, &agbp
);
405 up_read(&mp
->m_peraglock
);
408 * Skip this allocation group and go to the next one.
414 agi
= XFS_BUF_TO_AGI(agbp
);
416 * Allocate and initialize a btree cursor for ialloc btree.
418 cur
= xfs_inobt_init_cursor(mp
, NULL
, agbp
, agno
);
420 irbufend
= irbuf
+ nirbuf
;
423 * If we're returning in the middle of an allocation group,
424 * we need to get the remainder of the chunk we're in.
428 * Lookup the inode chunk that this inode lives in.
430 error
= xfs_inobt_lookup_le(cur
, agino
, 0, 0, &tmp
);
431 if (!error
&& /* no I/O error */
432 tmp
&& /* lookup succeeded */
433 /* got the record, should always work */
434 !(error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
,
437 /* this is the right chunk */
438 agino
< gino
+ XFS_INODES_PER_CHUNK
&&
439 /* lastino was not last in chunk */
440 (chunkidx
= agino
- gino
+ 1) <
441 XFS_INODES_PER_CHUNK
&&
442 /* there are some left allocated */
443 XFS_INOBT_MASKN(chunkidx
,
444 XFS_INODES_PER_CHUNK
- chunkidx
) & ~gfree
) {
446 * Grab the chunk record. Mark all the
447 * uninteresting inodes (because they're
448 * before our start point) free.
450 for (i
= 0; i
< chunkidx
; i
++) {
451 if (XFS_INOBT_MASK(i
) & ~gfree
)
454 gfree
|= XFS_INOBT_MASKN(0, chunkidx
);
455 irbp
->ir_startino
= gino
;
456 irbp
->ir_freecount
= gcnt
;
457 irbp
->ir_free
= gfree
;
459 agino
= gino
+ XFS_INODES_PER_CHUNK
;
460 icount
= XFS_INODES_PER_CHUNK
- gcnt
;
463 * If any of those tests failed, bump the
464 * inode number (just in case).
470 * In any case, increment to the next record.
473 error
= xfs_btree_increment(cur
, 0, &tmp
);
476 * Start of ag. Lookup the first inode chunk.
478 error
= xfs_inobt_lookup_ge(cur
, 0, 0, 0, &tmp
);
482 * Loop through inode btree records in this ag,
483 * until we run out of inodes or space in the buffer.
485 while (irbp
< irbufend
&& icount
< ubcount
) {
487 * Loop as long as we're unable to read the
491 agino
+= XFS_INODES_PER_CHUNK
;
492 if (XFS_AGINO_TO_AGBNO(mp
, agino
) >=
493 be32_to_cpu(agi
->agi_length
))
495 error
= xfs_inobt_lookup_ge(cur
, agino
, 0, 0,
500 * If ran off the end of the ag either with an error,
501 * or the normal way, set end and stop collecting.
504 (error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
,
511 * If this chunk has any allocated inodes, save it.
512 * Also start read-ahead now for this chunk.
514 if (gcnt
< XFS_INODES_PER_CHUNK
) {
516 * Loop over all clusters in the next chunk.
517 * Do a readahead if there are any allocated
518 * inodes in that cluster.
520 for (agbno
= XFS_AGINO_TO_AGBNO(mp
, gino
),
522 chunkidx
< XFS_INODES_PER_CHUNK
;
523 chunkidx
+= nicluster
,
524 agbno
+= nbcluster
) {
525 if (XFS_INOBT_MASKN(chunkidx
,
527 xfs_btree_reada_bufs(mp
, agno
,
530 irbp
->ir_startino
= gino
;
531 irbp
->ir_freecount
= gcnt
;
532 irbp
->ir_free
= gfree
;
534 icount
+= XFS_INODES_PER_CHUNK
- gcnt
;
537 * Set agino to after this chunk and bump the cursor.
539 agino
= gino
+ XFS_INODES_PER_CHUNK
;
540 error
= xfs_btree_increment(cur
, 0, &tmp
);
544 * Drop the btree buffers and the agi buffer.
545 * We can't hold any of the locks these represent
548 xfs_btree_del_cursor(cur
, XFS_BTREE_NOERROR
);
551 * Now format all the good inodes into the user's buffer.
555 irbp
< irbufend
&& XFS_BULKSTAT_UBLEFT(ubleft
); irbp
++) {
557 * Now process this chunk of inodes.
559 for (agino
= irbp
->ir_startino
, chunkidx
= clustidx
= 0;
560 XFS_BULKSTAT_UBLEFT(ubleft
) &&
561 irbp
->ir_freecount
< XFS_INODES_PER_CHUNK
;
562 chunkidx
++, clustidx
++, agino
++) {
563 ASSERT(chunkidx
< XFS_INODES_PER_CHUNK
);
565 * Recompute agbno if this is the
566 * first inode of the cluster.
568 * Careful with clustidx. There can be
569 * multple clusters per chunk, a single
570 * cluster per chunk or a cluster that has
571 * inodes represented from several different
572 * chunks (if blocksize is large).
574 * Because of this, the starting clustidx is
575 * initialized to zero in this loop but must
576 * later be reset after reading in the cluster
579 if ((chunkidx
& (nicluster
- 1)) == 0) {
580 agbno
= XFS_AGINO_TO_AGBNO(mp
,
582 ((chunkidx
& nimask
) >>
583 mp
->m_sb
.sb_inopblog
);
585 if (flags
& (BULKSTAT_FG_QUICK
|
586 BULKSTAT_FG_INLINE
)) {
589 ino
= XFS_AGINO_TO_INO(mp
, agno
,
591 bno
= XFS_AGB_TO_DADDR(mp
, agno
,
595 * Get the inode cluster buffer
600 error
= xfs_inotobp(mp
, NULL
, ino
, &dip
,
605 clustidx
= offset
/ mp
->m_sb
.sb_inodesize
;
606 if (XFS_TEST_ERROR(error
!= 0,
607 mp
, XFS_ERRTAG_BULKSTAT_READ_CHUNK
,
608 XFS_RANDOM_BULKSTAT_READ_CHUNK
)) {
616 ino
= XFS_AGINO_TO_INO(mp
, agno
, agino
);
617 bno
= XFS_AGB_TO_DADDR(mp
, agno
, agbno
);
619 * Skip if this inode is free.
621 if (XFS_INOBT_MASK(chunkidx
) & irbp
->ir_free
) {
626 * Count used inodes as free so we can tell
627 * when the chunk is used up.
629 irbp
->ir_freecount
++;
630 if (!xfs_bulkstat_use_dinode(mp
, flags
, bp
,
636 * If we need to do an iget, cannot hold bp.
637 * Drop it, until starting the next cluster.
639 if ((flags
& BULKSTAT_FG_INLINE
) && !dip
) {
646 * Get the inode and fill in a single buffer.
647 * BULKSTAT_FG_QUICK uses dip to fill it in.
648 * BULKSTAT_FG_IGET uses igets.
649 * BULKSTAT_FG_INLINE uses dip if we have an
650 * inline attr fork, else igets.
651 * See: xfs_bulkstat_one & xfs_dm_bulkstat_one.
652 * This is also used to count inodes/blks, etc
653 * in xfs_qm_quotacheck.
655 ubused
= statstruct_size
;
656 error
= formatter(mp
, ino
, ubufp
,
657 ubleft
, private_data
,
658 bno
, &ubused
, dip
, &fmterror
);
659 if (fmterror
== BULKSTAT_RV_NOTHING
) {
660 if (error
&& error
!= ENOENT
&&
669 if (fmterror
== BULKSTAT_RV_GIVEUP
) {
689 * Set up for the next loop iteration.
691 if (XFS_BULKSTAT_UBLEFT(ubleft
)) {
696 agino
= XFS_INO_TO_AGINO(mp
, lastino
);
701 * Done, we're either out of filesystem or space to put the data.
706 * Found some inodes, return them now and return the error next time.
710 if (agno
>= mp
->m_sb
.sb_agcount
) {
712 * If we ran out of filesystem, mark lastino as off
713 * the end of the filesystem, so the next call
714 * will return immediately.
716 *lastinop
= (xfs_ino_t
)XFS_AGINO_TO_INO(mp
, agno
, 0);
719 *lastinop
= (xfs_ino_t
)lastino
;
725 * Return stat information in bulk (by-inode) for the filesystem.
726 * Special case for non-sequential one inode bulkstat.
728 int /* error status */
730 xfs_mount_t
*mp
, /* mount point for filesystem */
731 xfs_ino_t
*lastinop
, /* inode to return */
732 char __user
*buffer
, /* buffer with inode stats */
733 int *done
) /* 1 if there are more stats to get */
735 int count
; /* count value for bulkstat call */
736 int error
; /* return value */
737 xfs_ino_t ino
; /* filesystem inode number */
738 int res
; /* result from bs1 */
741 * note that requesting valid inode numbers which are not allocated
742 * to inodes will most likely cause xfs_itobp to generate warning
743 * messages about bad magic numbers. This is ok. The fact that
744 * the inode isn't actually an inode is handled by the
745 * error check below. Done this way to make the usual case faster
746 * at the expense of the error case.
749 ino
= (xfs_ino_t
)*lastinop
;
750 error
= xfs_bulkstat_one(mp
, ino
, buffer
, sizeof(xfs_bstat_t
),
751 NULL
, 0, NULL
, NULL
, &res
);
754 * Special case way failed, do it the "long" way
755 * to see if that works.
759 if (xfs_bulkstat(mp
, lastinop
, &count
, xfs_bulkstat_one
,
760 NULL
, sizeof(xfs_bstat_t
), buffer
,
761 BULKSTAT_FG_IGET
, done
))
763 if (count
== 0 || (xfs_ino_t
)*lastinop
!= ino
)
764 return error
== EFSCORRUPTED
?
765 XFS_ERROR(EINVAL
) : error
;
775 void __user
*ubuffer
, /* buffer to write to */
776 const xfs_inogrp_t
*buffer
, /* buffer to read from */
777 long count
, /* # of elements to read */
778 long *written
) /* # of bytes written */
780 if (copy_to_user(ubuffer
, buffer
, count
* sizeof(*buffer
)))
782 *written
= count
* sizeof(*buffer
);
787 * Return inode number table for the filesystem.
789 int /* error status */
791 xfs_mount_t
*mp
, /* mount point for filesystem */
792 xfs_ino_t
*lastino
, /* last inode returned */
793 int *count
, /* size of buffer/count returned */
794 void __user
*ubuffer
,/* buffer with inode descriptions */
795 inumbers_fmt_pf formatter
)
801 xfs_inogrp_t
*buffer
;
803 xfs_btree_cur_t
*cur
;
813 ino
= (xfs_ino_t
)*lastino
;
814 agno
= XFS_INO_TO_AGNO(mp
, ino
);
815 agino
= XFS_INO_TO_AGINO(mp
, ino
);
818 bcount
= MIN(left
, (int)(PAGE_SIZE
/ sizeof(*buffer
)));
819 buffer
= kmem_alloc(bcount
* sizeof(*buffer
), KM_SLEEP
);
823 while (left
> 0 && agno
< mp
->m_sb
.sb_agcount
) {
825 down_read(&mp
->m_peraglock
);
826 error
= xfs_ialloc_read_agi(mp
, NULL
, agno
, &agbp
);
827 up_read(&mp
->m_peraglock
);
830 * If we can't read the AGI of this ag,
831 * then just skip to the next one.
839 cur
= xfs_inobt_init_cursor(mp
, NULL
, agbp
, agno
);
840 error
= xfs_inobt_lookup_ge(cur
, agino
, 0, 0, &tmp
);
842 xfs_btree_del_cursor(cur
, XFS_BTREE_ERROR
);
847 * Move up the last inode in the current
848 * chunk. The lookup_ge will always get
849 * us the first inode in the next chunk.
851 agino
+= XFS_INODES_PER_CHUNK
- 1;
855 if ((error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
, &gfree
,
860 xfs_btree_del_cursor(cur
, XFS_BTREE_NOERROR
);
866 agino
= gino
+ XFS_INODES_PER_CHUNK
- 1;
867 buffer
[bufidx
].xi_startino
= XFS_AGINO_TO_INO(mp
, agno
, gino
);
868 buffer
[bufidx
].xi_alloccount
= XFS_INODES_PER_CHUNK
- gcnt
;
869 buffer
[bufidx
].xi_allocmask
= ~gfree
;
872 if (bufidx
== bcount
) {
874 if (formatter(ubuffer
, buffer
, bufidx
, &written
)) {
875 error
= XFS_ERROR(EFAULT
);
883 error
= xfs_btree_increment(cur
, 0, &tmp
);
885 xfs_btree_del_cursor(cur
, XFS_BTREE_ERROR
);
890 * The agino value has already been bumped.
891 * Just try to skip up to it.
893 agino
+= XFS_INODES_PER_CHUNK
;
901 if (formatter(ubuffer
, buffer
, bufidx
, &written
))
902 error
= XFS_ERROR(EFAULT
);
906 *lastino
= XFS_AGINO_TO_INO(mp
, agno
, agino
);
910 xfs_btree_del_cursor(cur
, (error
? XFS_BTREE_ERROR
: