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"
43 xfs_bulkstat_one_iget(
44 xfs_mount_t
*mp
, /* mount point for filesystem */
45 xfs_ino_t ino
, /* inode number to get data for */
46 xfs_daddr_t bno
, /* starting bno of inode cluster */
47 xfs_bstat_t
*buf
, /* return buffer */
48 int *stat
) /* BULKSTAT_RV_... */
50 xfs_dinode_core_t
*dic
; /* dinode core info pointer */
51 xfs_inode_t
*ip
; /* incore inode pointer */
55 error
= xfs_iget(mp
, NULL
, ino
,
56 XFS_IGET_BULKSTAT
, XFS_ILOCK_SHARED
, &ip
, bno
);
58 *stat
= BULKSTAT_RV_NOTHING
;
63 ASSERT(ip
->i_blkno
!= (xfs_daddr_t
)0);
64 if (ip
->i_d
.di_mode
== 0) {
65 *stat
= BULKSTAT_RV_NOTHING
;
66 error
= XFS_ERROR(ENOENT
);
73 /* xfs_iget returns the following without needing
76 buf
->bs_nlink
= dic
->di_nlink
;
77 buf
->bs_projid
= dic
->di_projid
;
79 buf
->bs_mode
= dic
->di_mode
;
80 buf
->bs_uid
= dic
->di_uid
;
81 buf
->bs_gid
= dic
->di_gid
;
82 buf
->bs_size
= dic
->di_size
;
83 vn_atime_to_bstime(vp
, &buf
->bs_atime
);
84 buf
->bs_mtime
.tv_sec
= dic
->di_mtime
.t_sec
;
85 buf
->bs_mtime
.tv_nsec
= dic
->di_mtime
.t_nsec
;
86 buf
->bs_ctime
.tv_sec
= dic
->di_ctime
.t_sec
;
87 buf
->bs_ctime
.tv_nsec
= dic
->di_ctime
.t_nsec
;
88 buf
->bs_xflags
= xfs_ip2xflags(ip
);
89 buf
->bs_extsize
= dic
->di_extsize
<< mp
->m_sb
.sb_blocklog
;
90 buf
->bs_extents
= dic
->di_nextents
;
91 buf
->bs_gen
= dic
->di_gen
;
92 memset(buf
->bs_pad
, 0, sizeof(buf
->bs_pad
));
93 buf
->bs_dmevmask
= dic
->di_dmevmask
;
94 buf
->bs_dmstate
= dic
->di_dmstate
;
95 buf
->bs_aextents
= dic
->di_anextents
;
97 switch (dic
->di_format
) {
98 case XFS_DINODE_FMT_DEV
:
99 buf
->bs_rdev
= ip
->i_df
.if_u2
.if_rdev
;
100 buf
->bs_blksize
= BLKDEV_IOSIZE
;
103 case XFS_DINODE_FMT_LOCAL
:
104 case XFS_DINODE_FMT_UUID
:
106 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
109 case XFS_DINODE_FMT_EXTENTS
:
110 case XFS_DINODE_FMT_BTREE
:
112 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
113 buf
->bs_blocks
= dic
->di_nblocks
+ ip
->i_delayed_blks
;
118 xfs_iput(ip
, XFS_ILOCK_SHARED
);
123 xfs_bulkstat_one_dinode(
124 xfs_mount_t
*mp
, /* mount point for filesystem */
125 xfs_ino_t ino
, /* inode number to get data for */
126 xfs_dinode_t
*dip
, /* dinode inode pointer */
127 xfs_bstat_t
*buf
) /* return buffer */
129 xfs_dinode_core_t
*dic
; /* dinode core info pointer */
134 * The inode format changed when we moved the link count and
135 * made it 32 bits long. If this is an old format inode,
136 * convert it in memory to look like a new one. If it gets
137 * flushed to disk we will convert back before flushing or
138 * logging it. We zero out the new projid field and the old link
139 * count field. We'll handle clearing the pad field (the remains
140 * of the old uuid field) when we actually convert the inode to
141 * the new format. We don't change the version number so that we
142 * can distinguish this from a real new format inode.
144 if (INT_GET(dic
->di_version
, ARCH_CONVERT
) == XFS_DINODE_VERSION_1
) {
145 buf
->bs_nlink
= INT_GET(dic
->di_onlink
, ARCH_CONVERT
);
148 buf
->bs_nlink
= INT_GET(dic
->di_nlink
, ARCH_CONVERT
);
149 buf
->bs_projid
= INT_GET(dic
->di_projid
, ARCH_CONVERT
);
153 buf
->bs_mode
= INT_GET(dic
->di_mode
, ARCH_CONVERT
);
154 buf
->bs_uid
= INT_GET(dic
->di_uid
, ARCH_CONVERT
);
155 buf
->bs_gid
= INT_GET(dic
->di_gid
, ARCH_CONVERT
);
156 buf
->bs_size
= INT_GET(dic
->di_size
, ARCH_CONVERT
);
157 buf
->bs_atime
.tv_sec
= INT_GET(dic
->di_atime
.t_sec
, ARCH_CONVERT
);
158 buf
->bs_atime
.tv_nsec
= INT_GET(dic
->di_atime
.t_nsec
, ARCH_CONVERT
);
159 buf
->bs_mtime
.tv_sec
= INT_GET(dic
->di_mtime
.t_sec
, ARCH_CONVERT
);
160 buf
->bs_mtime
.tv_nsec
= INT_GET(dic
->di_mtime
.t_nsec
, ARCH_CONVERT
);
161 buf
->bs_ctime
.tv_sec
= INT_GET(dic
->di_ctime
.t_sec
, ARCH_CONVERT
);
162 buf
->bs_ctime
.tv_nsec
= INT_GET(dic
->di_ctime
.t_nsec
, ARCH_CONVERT
);
163 buf
->bs_xflags
= xfs_dic2xflags(dic
);
164 buf
->bs_extsize
= INT_GET(dic
->di_extsize
, ARCH_CONVERT
) << mp
->m_sb
.sb_blocklog
;
165 buf
->bs_extents
= INT_GET(dic
->di_nextents
, ARCH_CONVERT
);
166 buf
->bs_gen
= INT_GET(dic
->di_gen
, ARCH_CONVERT
);
167 memset(buf
->bs_pad
, 0, sizeof(buf
->bs_pad
));
168 buf
->bs_dmevmask
= INT_GET(dic
->di_dmevmask
, ARCH_CONVERT
);
169 buf
->bs_dmstate
= INT_GET(dic
->di_dmstate
, ARCH_CONVERT
);
170 buf
->bs_aextents
= INT_GET(dic
->di_anextents
, ARCH_CONVERT
);
172 switch (INT_GET(dic
->di_format
, ARCH_CONVERT
)) {
173 case XFS_DINODE_FMT_DEV
:
174 buf
->bs_rdev
= INT_GET(dip
->di_u
.di_dev
, ARCH_CONVERT
);
175 buf
->bs_blksize
= BLKDEV_IOSIZE
;
178 case XFS_DINODE_FMT_LOCAL
:
179 case XFS_DINODE_FMT_UUID
:
181 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
184 case XFS_DINODE_FMT_EXTENTS
:
185 case XFS_DINODE_FMT_BTREE
:
187 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
188 buf
->bs_blocks
= INT_GET(dic
->di_nblocks
, ARCH_CONVERT
);
196 * Return stat information for one inode.
197 * Return 0 if ok, else errno.
199 int /* error status */
201 xfs_mount_t
*mp
, /* mount point for filesystem */
202 xfs_ino_t ino
, /* inode number to get data for */
203 void __user
*buffer
, /* buffer to place output in */
204 int ubsize
, /* size of buffer */
205 void *private_data
, /* my private data */
206 xfs_daddr_t bno
, /* starting bno of inode cluster */
207 int *ubused
, /* bytes used by me */
208 void *dibuff
, /* on-disk inode buffer */
209 int *stat
) /* BULKSTAT_RV_... */
211 xfs_bstat_t
*buf
; /* return buffer */
212 int error
= 0; /* error value */
213 xfs_dinode_t
*dip
; /* dinode inode pointer */
215 dip
= (xfs_dinode_t
*)dibuff
;
217 if (!buffer
|| ino
== mp
->m_sb
.sb_rbmino
|| ino
== mp
->m_sb
.sb_rsumino
||
218 (XFS_SB_VERSION_HASQUOTA(&mp
->m_sb
) &&
219 (ino
== mp
->m_sb
.sb_uquotino
|| ino
== mp
->m_sb
.sb_gquotino
))) {
220 *stat
= BULKSTAT_RV_NOTHING
;
221 return XFS_ERROR(EINVAL
);
223 if (ubsize
< sizeof(*buf
)) {
224 *stat
= BULKSTAT_RV_NOTHING
;
225 return XFS_ERROR(ENOMEM
);
228 buf
= kmem_alloc(sizeof(*buf
), KM_SLEEP
);
231 /* We're not being passed a pointer to a dinode. This happens
232 * if BULKSTAT_FG_IGET is selected. Do the iget.
234 error
= xfs_bulkstat_one_iget(mp
, ino
, bno
, buf
, stat
);
238 xfs_bulkstat_one_dinode(mp
, ino
, dip
, buf
);
241 if (copy_to_user(buffer
, buf
, sizeof(*buf
))) {
242 *stat
= BULKSTAT_RV_NOTHING
;
247 *stat
= BULKSTAT_RV_DIDONE
;
249 *ubused
= sizeof(*buf
);
252 kmem_free(buf
, sizeof(*buf
));
257 * Test to see whether we can use the ondisk inode directly, based
258 * on the given bulkstat flags, filling in dipp accordingly.
259 * Returns zero if the inode is dodgey.
262 xfs_bulkstat_use_dinode(
270 unsigned int aformat
;
273 if (!bp
|| (flags
& BULKSTAT_FG_IGET
))
275 dip
= (xfs_dinode_t
*)
276 xfs_buf_offset(bp
, clustidx
<< mp
->m_sb
.sb_inodelog
);
277 if (INT_GET(dip
->di_core
.di_magic
, ARCH_CONVERT
) != XFS_DINODE_MAGIC
||
278 !XFS_DINODE_GOOD_VERSION(
279 INT_GET(dip
->di_core
.di_version
, ARCH_CONVERT
)))
281 if (flags
& BULKSTAT_FG_QUICK
) {
285 /* BULKSTAT_FG_INLINE: if attr fork is local, or not there, use it */
286 aformat
= INT_GET(dip
->di_core
.di_aformat
, ARCH_CONVERT
);
287 if ((XFS_CFORK_Q(&dip
->di_core
) == 0) ||
288 (aformat
== XFS_DINODE_FMT_LOCAL
) ||
289 (aformat
== XFS_DINODE_FMT_EXTENTS
&& !dip
->di_core
.di_anextents
)) {
297 * Return stat information in bulk (by-inode) for the filesystem.
299 int /* error status */
301 xfs_mount_t
*mp
, /* mount point for filesystem */
302 xfs_ino_t
*lastinop
, /* last inode returned */
303 int *ubcountp
, /* size of buffer/count returned */
304 bulkstat_one_pf formatter
, /* func that'd fill a single buf */
305 void *private_data
,/* private data for formatter */
306 size_t statstruct_size
, /* sizeof struct filling */
307 char __user
*ubuffer
, /* buffer with inode stats */
308 int flags
, /* defined in xfs_itable.h */
309 int *done
) /* 1 if there are more stats to get */
311 xfs_agblock_t agbno
=0;/* allocation group block number */
312 xfs_buf_t
*agbp
; /* agi header buffer */
313 xfs_agi_t
*agi
; /* agi header data */
314 xfs_agino_t agino
; /* inode # in allocation group */
315 xfs_agnumber_t agno
; /* allocation group number */
316 xfs_daddr_t bno
; /* inode cluster start daddr */
317 int chunkidx
; /* current index into inode chunk */
318 int clustidx
; /* current index into inode cluster */
319 xfs_btree_cur_t
*cur
; /* btree cursor for ialloc btree */
320 int end_of_ag
; /* set if we've seen the ag end */
321 int error
; /* error code */
322 int fmterror
;/* bulkstat formatter result */
323 __int32_t gcnt
; /* current btree rec's count */
324 xfs_inofree_t gfree
; /* current btree rec's free mask */
325 xfs_agino_t gino
; /* current btree rec's start inode */
326 int i
; /* loop index */
327 int icount
; /* count of inodes good in irbuf */
328 size_t irbsize
; /* size of irec buffer in bytes */
329 xfs_ino_t ino
; /* inode number (filesystem) */
330 xfs_inobt_rec_incore_t
*irbp
; /* current irec buffer pointer */
331 xfs_inobt_rec_incore_t
*irbuf
; /* start of irec buffer */
332 xfs_inobt_rec_incore_t
*irbufend
; /* end of good irec buffer entries */
333 xfs_ino_t lastino
=0; /* last inode number returned */
334 int nbcluster
; /* # of blocks in a cluster */
335 int nicluster
; /* # of inodes in a cluster */
336 int nimask
; /* mask for inode clusters */
337 int nirbuf
; /* size of irbuf */
338 int rval
; /* return value error code */
339 int tmp
; /* result value from btree calls */
340 int ubcount
; /* size of user's buffer */
341 int ubleft
; /* bytes left in user's buffer */
342 char __user
*ubufp
; /* pointer into user's buffer */
343 int ubelem
; /* spaces used in user's buffer */
344 int ubused
; /* bytes used by formatter */
345 xfs_buf_t
*bp
; /* ptr to on-disk inode cluster buf */
346 xfs_dinode_t
*dip
; /* ptr into bp for specific inode */
347 xfs_inode_t
*ip
; /* ptr to in-core inode struct */
350 * Get the last inode value, see if there's nothing to do.
352 ino
= (xfs_ino_t
)*lastinop
;
354 agno
= XFS_INO_TO_AGNO(mp
, ino
);
355 agino
= XFS_INO_TO_AGINO(mp
, ino
);
356 if (agno
>= mp
->m_sb
.sb_agcount
||
357 ino
!= XFS_AGINO_TO_INO(mp
, agno
, agino
)) {
362 ubcount
= *ubcountp
; /* statstruct's */
363 ubleft
= ubcount
* statstruct_size
; /* bytes */
364 *ubcountp
= ubelem
= 0;
368 nicluster
= mp
->m_sb
.sb_blocksize
>= XFS_INODE_CLUSTER_SIZE(mp
) ?
369 mp
->m_sb
.sb_inopblock
:
370 (XFS_INODE_CLUSTER_SIZE(mp
) >> mp
->m_sb
.sb_inodelog
);
371 nimask
= ~(nicluster
- 1);
372 nbcluster
= nicluster
>> mp
->m_sb
.sb_inopblog
;
373 irbuf
= kmem_zalloc_greedy(&irbsize
, NBPC
, NBPC
* 4,
374 KM_SLEEP
| KM_MAYFAIL
| KM_LARGE
);
375 nirbuf
= irbsize
/ sizeof(*irbuf
);
378 * Loop over the allocation groups, starting from the last
379 * inode returned; 0 means start of the allocation group.
382 while (ubleft
>= statstruct_size
&& agno
< mp
->m_sb
.sb_agcount
) {
384 down_read(&mp
->m_peraglock
);
385 error
= xfs_ialloc_read_agi(mp
, NULL
, agno
, &agbp
);
386 up_read(&mp
->m_peraglock
);
389 * Skip this allocation group and go to the next one.
395 agi
= XFS_BUF_TO_AGI(agbp
);
397 * Allocate and initialize a btree cursor for ialloc btree.
399 cur
= xfs_btree_init_cursor(mp
, NULL
, agbp
, agno
, XFS_BTNUM_INO
,
400 (xfs_inode_t
*)0, 0);
402 irbufend
= irbuf
+ nirbuf
;
405 * If we're returning in the middle of an allocation group,
406 * we need to get the remainder of the chunk we're in.
410 * Lookup the inode chunk that this inode lives in.
412 error
= xfs_inobt_lookup_le(cur
, agino
, 0, 0, &tmp
);
413 if (!error
&& /* no I/O error */
414 tmp
&& /* lookup succeeded */
415 /* got the record, should always work */
416 !(error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
,
419 /* this is the right chunk */
420 agino
< gino
+ XFS_INODES_PER_CHUNK
&&
421 /* lastino was not last in chunk */
422 (chunkidx
= agino
- gino
+ 1) <
423 XFS_INODES_PER_CHUNK
&&
424 /* there are some left allocated */
425 XFS_INOBT_MASKN(chunkidx
,
426 XFS_INODES_PER_CHUNK
- chunkidx
) & ~gfree
) {
428 * Grab the chunk record. Mark all the
429 * uninteresting inodes (because they're
430 * before our start point) free.
432 for (i
= 0; i
< chunkidx
; i
++) {
433 if (XFS_INOBT_MASK(i
) & ~gfree
)
436 gfree
|= XFS_INOBT_MASKN(0, chunkidx
);
437 irbp
->ir_startino
= gino
;
438 irbp
->ir_freecount
= gcnt
;
439 irbp
->ir_free
= gfree
;
441 agino
= gino
+ XFS_INODES_PER_CHUNK
;
442 icount
= XFS_INODES_PER_CHUNK
- gcnt
;
445 * If any of those tests failed, bump the
446 * inode number (just in case).
452 * In any case, increment to the next record.
455 error
= xfs_inobt_increment(cur
, 0, &tmp
);
458 * Start of ag. Lookup the first inode chunk.
460 error
= xfs_inobt_lookup_ge(cur
, 0, 0, 0, &tmp
);
464 * Loop through inode btree records in this ag,
465 * until we run out of inodes or space in the buffer.
467 while (irbp
< irbufend
&& icount
< ubcount
) {
469 * Loop as long as we're unable to read the
473 agino
+= XFS_INODES_PER_CHUNK
;
474 if (XFS_AGINO_TO_AGBNO(mp
, agino
) >=
475 be32_to_cpu(agi
->agi_length
))
477 error
= xfs_inobt_lookup_ge(cur
, agino
, 0, 0,
481 * If ran off the end of the ag either with an error,
482 * or the normal way, set end and stop collecting.
485 (error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
,
492 * If this chunk has any allocated inodes, save it.
493 * Also start read-ahead now for this chunk.
495 if (gcnt
< XFS_INODES_PER_CHUNK
) {
497 * Loop over all clusters in the next chunk.
498 * Do a readahead if there are any allocated
499 * inodes in that cluster.
501 for (agbno
= XFS_AGINO_TO_AGBNO(mp
, gino
),
503 chunkidx
< XFS_INODES_PER_CHUNK
;
504 chunkidx
+= nicluster
,
505 agbno
+= nbcluster
) {
506 if (XFS_INOBT_MASKN(chunkidx
,
508 xfs_btree_reada_bufs(mp
, agno
,
511 irbp
->ir_startino
= gino
;
512 irbp
->ir_freecount
= gcnt
;
513 irbp
->ir_free
= gfree
;
515 icount
+= XFS_INODES_PER_CHUNK
- gcnt
;
518 * Set agino to after this chunk and bump the cursor.
520 agino
= gino
+ XFS_INODES_PER_CHUNK
;
521 error
= xfs_inobt_increment(cur
, 0, &tmp
);
524 * Drop the btree buffers and the agi buffer.
525 * We can't hold any of the locks these represent
528 xfs_btree_del_cursor(cur
, XFS_BTREE_NOERROR
);
531 * Now format all the good inodes into the user's buffer.
535 irbp
< irbufend
&& ubleft
>= statstruct_size
; irbp
++) {
537 * Now process this chunk of inodes.
539 for (agino
= irbp
->ir_startino
, chunkidx
= clustidx
= 0;
541 irbp
->ir_freecount
< XFS_INODES_PER_CHUNK
;
542 chunkidx
++, clustidx
++, agino
++) {
543 ASSERT(chunkidx
< XFS_INODES_PER_CHUNK
);
545 * Recompute agbno if this is the
546 * first inode of the cluster.
548 * Careful with clustidx. There can be
549 * multple clusters per chunk, a single
550 * cluster per chunk or a cluster that has
551 * inodes represented from several different
552 * chunks (if blocksize is large).
554 * Because of this, the starting clustidx is
555 * initialized to zero in this loop but must
556 * later be reset after reading in the cluster
559 if ((chunkidx
& (nicluster
- 1)) == 0) {
560 agbno
= XFS_AGINO_TO_AGBNO(mp
,
562 ((chunkidx
& nimask
) >>
563 mp
->m_sb
.sb_inopblog
);
565 if (flags
& (BULKSTAT_FG_QUICK
|
566 BULKSTAT_FG_INLINE
)) {
567 ino
= XFS_AGINO_TO_INO(mp
, agno
,
569 bno
= XFS_AGB_TO_DADDR(mp
, agno
,
573 * Get the inode cluster buffer
575 ASSERT(xfs_inode_zone
!= NULL
);
576 ip
= kmem_zone_zalloc(xfs_inode_zone
,
580 spin_lock_init(&ip
->i_flags_lock
);
583 error
= xfs_itobp(mp
, NULL
, ip
,
587 clustidx
= ip
->i_boffset
/ mp
->m_sb
.sb_inodesize
;
588 kmem_zone_free(xfs_inode_zone
, ip
);
589 if (XFS_TEST_ERROR(error
!= 0,
590 mp
, XFS_ERRTAG_BULKSTAT_READ_CHUNK
,
591 XFS_RANDOM_BULKSTAT_READ_CHUNK
)) {
600 * Skip if this inode is free.
602 if (XFS_INOBT_MASK(chunkidx
) & irbp
->ir_free
)
605 * Count used inodes as free so we can tell
606 * when the chunk is used up.
608 irbp
->ir_freecount
++;
609 ino
= XFS_AGINO_TO_INO(mp
, agno
, agino
);
610 bno
= XFS_AGB_TO_DADDR(mp
, agno
, agbno
);
611 if (!xfs_bulkstat_use_dinode(mp
, flags
, bp
,
615 * If we need to do an iget, cannot hold bp.
616 * Drop it, until starting the next cluster.
618 if ((flags
& BULKSTAT_FG_INLINE
) && !dip
) {
625 * Get the inode and fill in a single buffer.
626 * BULKSTAT_FG_QUICK uses dip to fill it in.
627 * BULKSTAT_FG_IGET uses igets.
628 * BULKSTAT_FG_INLINE uses dip if we have an
629 * inline attr fork, else igets.
630 * See: xfs_bulkstat_one & xfs_dm_bulkstat_one.
631 * This is also used to count inodes/blks, etc
632 * in xfs_qm_quotacheck.
634 ubused
= statstruct_size
;
635 error
= formatter(mp
, ino
, ubufp
,
636 ubleft
, private_data
,
637 bno
, &ubused
, dip
, &fmterror
);
638 if (fmterror
== BULKSTAT_RV_NOTHING
) {
639 if (error
== EFAULT
) {
644 else if (error
== ENOMEM
)
648 if (fmterror
== BULKSTAT_RV_GIVEUP
) {
666 * Set up for the next loop iteration.
673 agino
= XFS_INO_TO_AGINO(mp
, lastino
);
678 * Done, we're either out of filesystem or space to put the data.
680 kmem_free(irbuf
, irbsize
);
682 if (agno
>= mp
->m_sb
.sb_agcount
) {
684 * If we ran out of filesystem, mark lastino as off
685 * the end of the filesystem, so the next call
686 * will return immediately.
688 *lastinop
= (xfs_ino_t
)XFS_AGINO_TO_INO(mp
, agno
, 0);
691 *lastinop
= (xfs_ino_t
)lastino
;
697 * Return stat information in bulk (by-inode) for the filesystem.
698 * Special case for non-sequential one inode bulkstat.
700 int /* error status */
702 xfs_mount_t
*mp
, /* mount point for filesystem */
703 xfs_ino_t
*lastinop
, /* inode to return */
704 char __user
*buffer
, /* buffer with inode stats */
705 int *done
) /* 1 if there are more stats to get */
707 int count
; /* count value for bulkstat call */
708 int error
; /* return value */
709 xfs_ino_t ino
; /* filesystem inode number */
710 int res
; /* result from bs1 */
713 * note that requesting valid inode numbers which are not allocated
714 * to inodes will most likely cause xfs_itobp to generate warning
715 * messages about bad magic numbers. This is ok. The fact that
716 * the inode isn't actually an inode is handled by the
717 * error check below. Done this way to make the usual case faster
718 * at the expense of the error case.
721 ino
= (xfs_ino_t
)*lastinop
;
722 error
= xfs_bulkstat_one(mp
, ino
, buffer
, sizeof(xfs_bstat_t
),
723 NULL
, 0, NULL
, NULL
, &res
);
726 * Special case way failed, do it the "long" way
727 * to see if that works.
731 if (xfs_bulkstat(mp
, lastinop
, &count
, xfs_bulkstat_one
,
732 NULL
, sizeof(xfs_bstat_t
), buffer
,
733 BULKSTAT_FG_IGET
, done
))
735 if (count
== 0 || (xfs_ino_t
)*lastinop
!= ino
)
736 return error
== EFSCORRUPTED
?
737 XFS_ERROR(EINVAL
) : error
;
746 * Return inode number table for the filesystem.
748 int /* error status */
750 xfs_mount_t
*mp
, /* mount point for filesystem */
751 xfs_ino_t
*lastino
, /* last inode returned */
752 int *count
, /* size of buffer/count returned */
753 xfs_inogrp_t __user
*ubuffer
)/* buffer with inode descriptions */
759 xfs_inogrp_t
*buffer
;
761 xfs_btree_cur_t
*cur
;
771 ino
= (xfs_ino_t
)*lastino
;
772 agno
= XFS_INO_TO_AGNO(mp
, ino
);
773 agino
= XFS_INO_TO_AGINO(mp
, ino
);
776 bcount
= MIN(left
, (int)(NBPP
/ sizeof(*buffer
)));
777 buffer
= kmem_alloc(bcount
* sizeof(*buffer
), KM_SLEEP
);
781 while (left
> 0 && agno
< mp
->m_sb
.sb_agcount
) {
783 down_read(&mp
->m_peraglock
);
784 error
= xfs_ialloc_read_agi(mp
, NULL
, agno
, &agbp
);
785 up_read(&mp
->m_peraglock
);
788 * If we can't read the AGI of this ag,
789 * then just skip to the next one.
797 cur
= xfs_btree_init_cursor(mp
, NULL
, agbp
, agno
,
798 XFS_BTNUM_INO
, (xfs_inode_t
*)0, 0);
799 error
= xfs_inobt_lookup_ge(cur
, agino
, 0, 0, &tmp
);
801 xfs_btree_del_cursor(cur
, XFS_BTREE_ERROR
);
806 * Move up the the last inode in the current
807 * chunk. The lookup_ge will always get
808 * us the first inode in the next chunk.
810 agino
+= XFS_INODES_PER_CHUNK
- 1;
814 if ((error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
, &gfree
,
819 xfs_btree_del_cursor(cur
, XFS_BTREE_NOERROR
);
825 agino
= gino
+ XFS_INODES_PER_CHUNK
- 1;
826 buffer
[bufidx
].xi_startino
= XFS_AGINO_TO_INO(mp
, agno
, gino
);
827 buffer
[bufidx
].xi_alloccount
= XFS_INODES_PER_CHUNK
- gcnt
;
828 buffer
[bufidx
].xi_allocmask
= ~gfree
;
831 if (bufidx
== bcount
) {
832 if (copy_to_user(ubuffer
, buffer
,
833 bufidx
* sizeof(*buffer
))) {
834 error
= XFS_ERROR(EFAULT
);
842 error
= xfs_inobt_increment(cur
, 0, &tmp
);
844 xfs_btree_del_cursor(cur
, XFS_BTREE_ERROR
);
849 * The agino value has already been bumped.
850 * Just try to skip up to it.
852 agino
+= XFS_INODES_PER_CHUNK
;
859 if (copy_to_user(ubuffer
, buffer
,
860 bufidx
* sizeof(*buffer
)))
861 error
= XFS_ERROR(EFAULT
);
865 *lastino
= XFS_AGINO_TO_INO(mp
, agno
, agino
);
867 kmem_free(buffer
, bcount
* sizeof(*buffer
));
869 xfs_btree_del_cursor(cur
, (error
? XFS_BTREE_ERROR
: