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_imap
.im_blkno
!= 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
;
87 * We are reading the atime from the Linux inode because the
88 * dinode might not be uptodate.
90 buf
->bs_atime
.tv_sec
= VFS_I(ip
)->i_atime
.tv_sec
;
91 buf
->bs_atime
.tv_nsec
= VFS_I(ip
)->i_atime
.tv_nsec
;
92 buf
->bs_mtime
.tv_sec
= dic
->di_mtime
.t_sec
;
93 buf
->bs_mtime
.tv_nsec
= dic
->di_mtime
.t_nsec
;
94 buf
->bs_ctime
.tv_sec
= dic
->di_ctime
.t_sec
;
95 buf
->bs_ctime
.tv_nsec
= dic
->di_ctime
.t_nsec
;
96 buf
->bs_xflags
= xfs_ip2xflags(ip
);
97 buf
->bs_extsize
= dic
->di_extsize
<< mp
->m_sb
.sb_blocklog
;
98 buf
->bs_extents
= dic
->di_nextents
;
99 buf
->bs_gen
= dic
->di_gen
;
100 memset(buf
->bs_pad
, 0, sizeof(buf
->bs_pad
));
101 buf
->bs_dmevmask
= dic
->di_dmevmask
;
102 buf
->bs_dmstate
= dic
->di_dmstate
;
103 buf
->bs_aextents
= dic
->di_anextents
;
105 switch (dic
->di_format
) {
106 case XFS_DINODE_FMT_DEV
:
107 buf
->bs_rdev
= ip
->i_df
.if_u2
.if_rdev
;
108 buf
->bs_blksize
= BLKDEV_IOSIZE
;
111 case XFS_DINODE_FMT_LOCAL
:
112 case XFS_DINODE_FMT_UUID
:
114 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
117 case XFS_DINODE_FMT_EXTENTS
:
118 case XFS_DINODE_FMT_BTREE
:
120 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
121 buf
->bs_blocks
= dic
->di_nblocks
+ ip
->i_delayed_blks
;
125 xfs_iput(ip
, XFS_ILOCK_SHARED
);
130 xfs_bulkstat_one_dinode(
131 xfs_mount_t
*mp
, /* mount point for filesystem */
132 xfs_ino_t ino
, /* inode number to get data for */
133 xfs_dinode_t
*dic
, /* dinode inode pointer */
134 xfs_bstat_t
*buf
) /* return buffer */
137 * The inode format changed when we moved the link count and
138 * made it 32 bits long. If this is an old format inode,
139 * convert it in memory to look like a new one. If it gets
140 * flushed to disk we will convert back before flushing or
141 * logging it. We zero out the new projid field and the old link
142 * count field. We'll handle clearing the pad field (the remains
143 * of the old uuid field) when we actually convert the inode to
144 * the new format. We don't change the version number so that we
145 * can distinguish this from a real new format inode.
147 if (dic
->di_version
== 1) {
148 buf
->bs_nlink
= be16_to_cpu(dic
->di_onlink
);
151 buf
->bs_nlink
= be32_to_cpu(dic
->di_nlink
);
152 buf
->bs_projid
= be16_to_cpu(dic
->di_projid
);
156 buf
->bs_mode
= be16_to_cpu(dic
->di_mode
);
157 buf
->bs_uid
= be32_to_cpu(dic
->di_uid
);
158 buf
->bs_gid
= be32_to_cpu(dic
->di_gid
);
159 buf
->bs_size
= be64_to_cpu(dic
->di_size
);
160 buf
->bs_atime
.tv_sec
= be32_to_cpu(dic
->di_atime
.t_sec
);
161 buf
->bs_atime
.tv_nsec
= be32_to_cpu(dic
->di_atime
.t_nsec
);
162 buf
->bs_mtime
.tv_sec
= be32_to_cpu(dic
->di_mtime
.t_sec
);
163 buf
->bs_mtime
.tv_nsec
= be32_to_cpu(dic
->di_mtime
.t_nsec
);
164 buf
->bs_ctime
.tv_sec
= be32_to_cpu(dic
->di_ctime
.t_sec
);
165 buf
->bs_ctime
.tv_nsec
= be32_to_cpu(dic
->di_ctime
.t_nsec
);
166 buf
->bs_xflags
= xfs_dic2xflags(dic
);
167 buf
->bs_extsize
= be32_to_cpu(dic
->di_extsize
) << mp
->m_sb
.sb_blocklog
;
168 buf
->bs_extents
= be32_to_cpu(dic
->di_nextents
);
169 buf
->bs_gen
= be32_to_cpu(dic
->di_gen
);
170 memset(buf
->bs_pad
, 0, sizeof(buf
->bs_pad
));
171 buf
->bs_dmevmask
= be32_to_cpu(dic
->di_dmevmask
);
172 buf
->bs_dmstate
= be16_to_cpu(dic
->di_dmstate
);
173 buf
->bs_aextents
= be16_to_cpu(dic
->di_anextents
);
175 switch (dic
->di_format
) {
176 case XFS_DINODE_FMT_DEV
:
177 buf
->bs_rdev
= xfs_dinode_get_rdev(dic
);
178 buf
->bs_blksize
= BLKDEV_IOSIZE
;
181 case XFS_DINODE_FMT_LOCAL
:
182 case XFS_DINODE_FMT_UUID
:
184 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
187 case XFS_DINODE_FMT_EXTENTS
:
188 case XFS_DINODE_FMT_BTREE
:
190 buf
->bs_blksize
= mp
->m_sb
.sb_blocksize
;
191 buf
->bs_blocks
= be64_to_cpu(dic
->di_nblocks
);
196 /* Return 0 on success or positive error */
198 xfs_bulkstat_one_fmt(
199 void __user
*ubuffer
,
202 const xfs_bstat_t
*buffer
)
204 if (ubsize
< sizeof(*buffer
))
205 return XFS_ERROR(ENOMEM
);
206 if (copy_to_user(ubuffer
, buffer
, sizeof(*buffer
)))
207 return XFS_ERROR(EFAULT
);
209 *ubused
= sizeof(*buffer
);
214 * Return stat information for one inode.
215 * Return 0 if ok, else errno.
217 int /* error status */
218 xfs_bulkstat_one_int(
219 xfs_mount_t
*mp
, /* mount point for filesystem */
220 xfs_ino_t ino
, /* inode number to get data for */
221 void __user
*buffer
, /* buffer to place output in */
222 int ubsize
, /* size of buffer */
223 bulkstat_one_fmt_pf formatter
, /* formatter, copy to user */
224 xfs_daddr_t bno
, /* starting bno of inode cluster */
225 int *ubused
, /* bytes used by me */
226 void *dibuff
, /* on-disk inode buffer */
227 int *stat
) /* BULKSTAT_RV_... */
229 xfs_bstat_t
*buf
; /* return buffer */
230 int error
= 0; /* error value */
231 xfs_dinode_t
*dip
; /* dinode inode pointer */
233 dip
= (xfs_dinode_t
*)dibuff
;
234 *stat
= BULKSTAT_RV_NOTHING
;
236 if (!buffer
|| xfs_internal_inum(mp
, ino
))
237 return XFS_ERROR(EINVAL
);
239 buf
= kmem_alloc(sizeof(*buf
), KM_SLEEP
);
242 /* We're not being passed a pointer to a dinode. This happens
243 * if BULKSTAT_FG_IGET is selected. Do the iget.
245 error
= xfs_bulkstat_one_iget(mp
, ino
, bno
, buf
, stat
);
249 xfs_bulkstat_one_dinode(mp
, ino
, dip
, buf
);
252 error
= formatter(buffer
, ubsize
, ubused
, buf
);
256 *stat
= BULKSTAT_RV_DIDONE
;
265 xfs_mount_t
*mp
, /* mount point for filesystem */
266 xfs_ino_t ino
, /* inode number to get data for */
267 void __user
*buffer
, /* buffer to place output in */
268 int ubsize
, /* size of buffer */
269 void *private_data
, /* my private data */
270 xfs_daddr_t bno
, /* starting bno of inode cluster */
271 int *ubused
, /* bytes used by me */
272 void *dibuff
, /* on-disk inode buffer */
273 int *stat
) /* BULKSTAT_RV_... */
275 return xfs_bulkstat_one_int(mp
, ino
, buffer
, ubsize
,
276 xfs_bulkstat_one_fmt
, bno
,
277 ubused
, dibuff
, stat
);
281 * Test to see whether we can use the ondisk inode directly, based
282 * on the given bulkstat flags, filling in dipp accordingly.
283 * Returns zero if the inode is dodgey.
286 xfs_bulkstat_use_dinode(
294 unsigned int aformat
;
297 if (!bp
|| (flags
& BULKSTAT_FG_IGET
))
299 dip
= (xfs_dinode_t
*)
300 xfs_buf_offset(bp
, clustidx
<< mp
->m_sb
.sb_inodelog
);
302 * Check the buffer containing the on-disk inode for di_mode == 0.
303 * This is to prevent xfs_bulkstat from picking up just reclaimed
304 * inodes that have their in-core state initialized but not flushed
305 * to disk yet. This is a temporary hack that would require a proper
308 if (be16_to_cpu(dip
->di_magic
) != XFS_DINODE_MAGIC
||
309 !XFS_DINODE_GOOD_VERSION(dip
->di_version
) ||
312 if (flags
& BULKSTAT_FG_QUICK
) {
316 /* BULKSTAT_FG_INLINE: if attr fork is local, or not there, use it */
317 aformat
= dip
->di_aformat
;
318 if ((XFS_DFORK_Q(dip
) == 0) ||
319 (aformat
== XFS_DINODE_FMT_LOCAL
) ||
320 (aformat
== XFS_DINODE_FMT_EXTENTS
&& !dip
->di_anextents
)) {
327 #define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size)
330 * Return stat information in bulk (by-inode) for the filesystem.
332 int /* error status */
334 xfs_mount_t
*mp
, /* mount point for filesystem */
335 xfs_ino_t
*lastinop
, /* last inode returned */
336 int *ubcountp
, /* size of buffer/count returned */
337 bulkstat_one_pf formatter
, /* func that'd fill a single buf */
338 void *private_data
,/* private data for formatter */
339 size_t statstruct_size
, /* sizeof struct filling */
340 char __user
*ubuffer
, /* buffer with inode stats */
341 int flags
, /* defined in xfs_itable.h */
342 int *done
) /* 1 if there are more stats to get */
344 xfs_agblock_t agbno
=0;/* allocation group block number */
345 xfs_buf_t
*agbp
; /* agi header buffer */
346 xfs_agi_t
*agi
; /* agi header data */
347 xfs_agino_t agino
; /* inode # in allocation group */
348 xfs_agnumber_t agno
; /* allocation group number */
349 xfs_daddr_t bno
; /* inode cluster start daddr */
350 int chunkidx
; /* current index into inode chunk */
351 int clustidx
; /* current index into inode cluster */
352 xfs_btree_cur_t
*cur
; /* btree cursor for ialloc btree */
353 int end_of_ag
; /* set if we've seen the ag end */
354 int error
; /* error code */
355 int fmterror
;/* bulkstat formatter result */
356 __int32_t gcnt
; /* current btree rec's count */
357 xfs_inofree_t gfree
; /* current btree rec's free mask */
358 xfs_agino_t gino
; /* current btree rec's start inode */
359 int i
; /* loop index */
360 int icount
; /* count of inodes good in irbuf */
361 size_t irbsize
; /* size of irec buffer in bytes */
362 xfs_ino_t ino
; /* inode number (filesystem) */
363 xfs_inobt_rec_incore_t
*irbp
; /* current irec buffer pointer */
364 xfs_inobt_rec_incore_t
*irbuf
; /* start of irec buffer */
365 xfs_inobt_rec_incore_t
*irbufend
; /* end of good irec buffer entries */
366 xfs_ino_t lastino
; /* last inode number returned */
367 int nbcluster
; /* # of blocks in a cluster */
368 int nicluster
; /* # of inodes in a cluster */
369 int nimask
; /* mask for inode clusters */
370 int nirbuf
; /* size of irbuf */
371 int rval
; /* return value error code */
372 int tmp
; /* result value from btree calls */
373 int ubcount
; /* size of user's buffer */
374 int ubleft
; /* bytes left in user's buffer */
375 char __user
*ubufp
; /* pointer into user's buffer */
376 int ubelem
; /* spaces used in user's buffer */
377 int ubused
; /* bytes used by formatter */
378 xfs_buf_t
*bp
; /* ptr to on-disk inode cluster buf */
379 xfs_dinode_t
*dip
; /* ptr into bp for specific inode */
382 * Get the last inode value, see if there's nothing to do.
384 ino
= (xfs_ino_t
)*lastinop
;
387 agno
= XFS_INO_TO_AGNO(mp
, ino
);
388 agino
= XFS_INO_TO_AGINO(mp
, ino
);
389 if (agno
>= mp
->m_sb
.sb_agcount
||
390 ino
!= XFS_AGINO_TO_INO(mp
, agno
, agino
)) {
395 if (!ubcountp
|| *ubcountp
<= 0) {
398 ubcount
= *ubcountp
; /* statstruct's */
399 ubleft
= ubcount
* statstruct_size
; /* bytes */
400 *ubcountp
= ubelem
= 0;
404 nicluster
= mp
->m_sb
.sb_blocksize
>= XFS_INODE_CLUSTER_SIZE(mp
) ?
405 mp
->m_sb
.sb_inopblock
:
406 (XFS_INODE_CLUSTER_SIZE(mp
) >> mp
->m_sb
.sb_inodelog
);
407 nimask
= ~(nicluster
- 1);
408 nbcluster
= nicluster
>> mp
->m_sb
.sb_inopblog
;
409 irbuf
= kmem_zalloc_greedy(&irbsize
, PAGE_SIZE
, PAGE_SIZE
* 4,
410 KM_SLEEP
| KM_MAYFAIL
| KM_LARGE
);
411 nirbuf
= irbsize
/ sizeof(*irbuf
);
414 * Loop over the allocation groups, starting from the last
415 * inode returned; 0 means start of the allocation group.
418 while (XFS_BULKSTAT_UBLEFT(ubleft
) && agno
< mp
->m_sb
.sb_agcount
) {
421 down_read(&mp
->m_peraglock
);
422 error
= xfs_ialloc_read_agi(mp
, NULL
, agno
, &agbp
);
423 up_read(&mp
->m_peraglock
);
426 * Skip this allocation group and go to the next one.
432 agi
= XFS_BUF_TO_AGI(agbp
);
434 * Allocate and initialize a btree cursor for ialloc btree.
436 cur
= xfs_inobt_init_cursor(mp
, NULL
, agbp
, agno
);
438 irbufend
= irbuf
+ nirbuf
;
441 * If we're returning in the middle of an allocation group,
442 * we need to get the remainder of the chunk we're in.
446 * Lookup the inode chunk that this inode lives in.
448 error
= xfs_inobt_lookup_le(cur
, agino
, 0, 0, &tmp
);
449 if (!error
&& /* no I/O error */
450 tmp
&& /* lookup succeeded */
451 /* got the record, should always work */
452 !(error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
,
455 /* this is the right chunk */
456 agino
< gino
+ XFS_INODES_PER_CHUNK
&&
457 /* lastino was not last in chunk */
458 (chunkidx
= agino
- gino
+ 1) <
459 XFS_INODES_PER_CHUNK
&&
460 /* there are some left allocated */
461 xfs_inobt_maskn(chunkidx
,
462 XFS_INODES_PER_CHUNK
- chunkidx
) & ~gfree
) {
464 * Grab the chunk record. Mark all the
465 * uninteresting inodes (because they're
466 * before our start point) free.
468 for (i
= 0; i
< chunkidx
; i
++) {
469 if (XFS_INOBT_MASK(i
) & ~gfree
)
472 gfree
|= xfs_inobt_maskn(0, chunkidx
);
473 irbp
->ir_startino
= gino
;
474 irbp
->ir_freecount
= gcnt
;
475 irbp
->ir_free
= gfree
;
477 agino
= gino
+ XFS_INODES_PER_CHUNK
;
478 icount
= XFS_INODES_PER_CHUNK
- gcnt
;
481 * If any of those tests failed, bump the
482 * inode number (just in case).
488 * In any case, increment to the next record.
491 error
= xfs_btree_increment(cur
, 0, &tmp
);
494 * Start of ag. Lookup the first inode chunk.
496 error
= xfs_inobt_lookup_ge(cur
, 0, 0, 0, &tmp
);
500 * Loop through inode btree records in this ag,
501 * until we run out of inodes or space in the buffer.
503 while (irbp
< irbufend
&& icount
< ubcount
) {
505 * Loop as long as we're unable to read the
509 agino
+= XFS_INODES_PER_CHUNK
;
510 if (XFS_AGINO_TO_AGBNO(mp
, agino
) >=
511 be32_to_cpu(agi
->agi_length
))
513 error
= xfs_inobt_lookup_ge(cur
, agino
, 0, 0,
518 * If ran off the end of the ag either with an error,
519 * or the normal way, set end and stop collecting.
522 (error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
,
529 * If this chunk has any allocated inodes, save it.
530 * Also start read-ahead now for this chunk.
532 if (gcnt
< XFS_INODES_PER_CHUNK
) {
534 * Loop over all clusters in the next chunk.
535 * Do a readahead if there are any allocated
536 * inodes in that cluster.
538 for (agbno
= XFS_AGINO_TO_AGBNO(mp
, gino
),
540 chunkidx
< XFS_INODES_PER_CHUNK
;
541 chunkidx
+= nicluster
,
542 agbno
+= nbcluster
) {
543 if (xfs_inobt_maskn(chunkidx
,
545 xfs_btree_reada_bufs(mp
, agno
,
548 irbp
->ir_startino
= gino
;
549 irbp
->ir_freecount
= gcnt
;
550 irbp
->ir_free
= gfree
;
552 icount
+= XFS_INODES_PER_CHUNK
- gcnt
;
555 * Set agino to after this chunk and bump the cursor.
557 agino
= gino
+ XFS_INODES_PER_CHUNK
;
558 error
= xfs_btree_increment(cur
, 0, &tmp
);
562 * Drop the btree buffers and the agi buffer.
563 * We can't hold any of the locks these represent
566 xfs_btree_del_cursor(cur
, XFS_BTREE_NOERROR
);
569 * Now format all the good inodes into the user's buffer.
573 irbp
< irbufend
&& XFS_BULKSTAT_UBLEFT(ubleft
); irbp
++) {
575 * Now process this chunk of inodes.
577 for (agino
= irbp
->ir_startino
, chunkidx
= clustidx
= 0;
578 XFS_BULKSTAT_UBLEFT(ubleft
) &&
579 irbp
->ir_freecount
< XFS_INODES_PER_CHUNK
;
580 chunkidx
++, clustidx
++, agino
++) {
581 ASSERT(chunkidx
< XFS_INODES_PER_CHUNK
);
583 * Recompute agbno if this is the
584 * first inode of the cluster.
586 * Careful with clustidx. There can be
587 * multiple clusters per chunk, a single
588 * cluster per chunk or a cluster that has
589 * inodes represented from several different
590 * chunks (if blocksize is large).
592 * Because of this, the starting clustidx is
593 * initialized to zero in this loop but must
594 * later be reset after reading in the cluster
597 if ((chunkidx
& (nicluster
- 1)) == 0) {
598 agbno
= XFS_AGINO_TO_AGBNO(mp
,
600 ((chunkidx
& nimask
) >>
601 mp
->m_sb
.sb_inopblog
);
603 if (flags
& (BULKSTAT_FG_QUICK
|
604 BULKSTAT_FG_INLINE
)) {
607 ino
= XFS_AGINO_TO_INO(mp
, agno
,
609 bno
= XFS_AGB_TO_DADDR(mp
, agno
,
613 * Get the inode cluster buffer
618 error
= xfs_inotobp(mp
, NULL
, ino
, &dip
,
623 clustidx
= offset
/ mp
->m_sb
.sb_inodesize
;
624 if (XFS_TEST_ERROR(error
!= 0,
625 mp
, XFS_ERRTAG_BULKSTAT_READ_CHUNK
,
626 XFS_RANDOM_BULKSTAT_READ_CHUNK
)) {
634 ino
= XFS_AGINO_TO_INO(mp
, agno
, agino
);
635 bno
= XFS_AGB_TO_DADDR(mp
, agno
, agbno
);
637 * Skip if this inode is free.
639 if (XFS_INOBT_MASK(chunkidx
) & irbp
->ir_free
) {
644 * Count used inodes as free so we can tell
645 * when the chunk is used up.
647 irbp
->ir_freecount
++;
648 if (!xfs_bulkstat_use_dinode(mp
, flags
, bp
,
654 * If we need to do an iget, cannot hold bp.
655 * Drop it, until starting the next cluster.
657 if ((flags
& BULKSTAT_FG_INLINE
) && !dip
) {
664 * Get the inode and fill in a single buffer.
665 * BULKSTAT_FG_QUICK uses dip to fill it in.
666 * BULKSTAT_FG_IGET uses igets.
667 * BULKSTAT_FG_INLINE uses dip if we have an
668 * inline attr fork, else igets.
669 * See: xfs_bulkstat_one & xfs_dm_bulkstat_one.
670 * This is also used to count inodes/blks, etc
671 * in xfs_qm_quotacheck.
673 ubused
= statstruct_size
;
674 error
= formatter(mp
, ino
, ubufp
,
675 ubleft
, private_data
,
676 bno
, &ubused
, dip
, &fmterror
);
677 if (fmterror
== BULKSTAT_RV_NOTHING
) {
678 if (error
&& error
!= ENOENT
&&
687 if (fmterror
== BULKSTAT_RV_GIVEUP
) {
707 * Set up for the next loop iteration.
709 if (XFS_BULKSTAT_UBLEFT(ubleft
)) {
714 agino
= XFS_INO_TO_AGINO(mp
, lastino
);
719 * Done, we're either out of filesystem or space to put the data.
724 * Found some inodes, return them now and return the error next time.
728 if (agno
>= mp
->m_sb
.sb_agcount
) {
730 * If we ran out of filesystem, mark lastino as off
731 * the end of the filesystem, so the next call
732 * will return immediately.
734 *lastinop
= (xfs_ino_t
)XFS_AGINO_TO_INO(mp
, agno
, 0);
737 *lastinop
= (xfs_ino_t
)lastino
;
743 * Return stat information in bulk (by-inode) for the filesystem.
744 * Special case for non-sequential one inode bulkstat.
746 int /* error status */
748 xfs_mount_t
*mp
, /* mount point for filesystem */
749 xfs_ino_t
*lastinop
, /* inode to return */
750 char __user
*buffer
, /* buffer with inode stats */
751 int *done
) /* 1 if there are more stats to get */
753 int count
; /* count value for bulkstat call */
754 int error
; /* return value */
755 xfs_ino_t ino
; /* filesystem inode number */
756 int res
; /* result from bs1 */
759 * note that requesting valid inode numbers which are not allocated
760 * to inodes will most likely cause xfs_itobp to generate warning
761 * messages about bad magic numbers. This is ok. The fact that
762 * the inode isn't actually an inode is handled by the
763 * error check below. Done this way to make the usual case faster
764 * at the expense of the error case.
767 ino
= (xfs_ino_t
)*lastinop
;
768 error
= xfs_bulkstat_one(mp
, ino
, buffer
, sizeof(xfs_bstat_t
),
769 NULL
, 0, NULL
, NULL
, &res
);
772 * Special case way failed, do it the "long" way
773 * to see if that works.
777 if (xfs_bulkstat(mp
, lastinop
, &count
, xfs_bulkstat_one
,
778 NULL
, sizeof(xfs_bstat_t
), buffer
,
779 BULKSTAT_FG_IGET
, done
))
781 if (count
== 0 || (xfs_ino_t
)*lastinop
!= ino
)
782 return error
== EFSCORRUPTED
?
783 XFS_ERROR(EINVAL
) : error
;
793 void __user
*ubuffer
, /* buffer to write to */
794 const xfs_inogrp_t
*buffer
, /* buffer to read from */
795 long count
, /* # of elements to read */
796 long *written
) /* # of bytes written */
798 if (copy_to_user(ubuffer
, buffer
, count
* sizeof(*buffer
)))
800 *written
= count
* sizeof(*buffer
);
805 * Return inode number table for the filesystem.
807 int /* error status */
809 xfs_mount_t
*mp
, /* mount point for filesystem */
810 xfs_ino_t
*lastino
, /* last inode returned */
811 int *count
, /* size of buffer/count returned */
812 void __user
*ubuffer
,/* buffer with inode descriptions */
813 inumbers_fmt_pf formatter
)
819 xfs_inogrp_t
*buffer
;
821 xfs_btree_cur_t
*cur
;
831 ino
= (xfs_ino_t
)*lastino
;
832 agno
= XFS_INO_TO_AGNO(mp
, ino
);
833 agino
= XFS_INO_TO_AGINO(mp
, ino
);
836 bcount
= MIN(left
, (int)(PAGE_SIZE
/ sizeof(*buffer
)));
837 buffer
= kmem_alloc(bcount
* sizeof(*buffer
), KM_SLEEP
);
841 while (left
> 0 && agno
< mp
->m_sb
.sb_agcount
) {
843 down_read(&mp
->m_peraglock
);
844 error
= xfs_ialloc_read_agi(mp
, NULL
, agno
, &agbp
);
845 up_read(&mp
->m_peraglock
);
848 * If we can't read the AGI of this ag,
849 * then just skip to the next one.
857 cur
= xfs_inobt_init_cursor(mp
, NULL
, agbp
, agno
);
858 error
= xfs_inobt_lookup_ge(cur
, agino
, 0, 0, &tmp
);
860 xfs_btree_del_cursor(cur
, XFS_BTREE_ERROR
);
865 * Move up the last inode in the current
866 * chunk. The lookup_ge will always get
867 * us the first inode in the next chunk.
869 agino
+= XFS_INODES_PER_CHUNK
- 1;
873 if ((error
= xfs_inobt_get_rec(cur
, &gino
, &gcnt
, &gfree
,
878 xfs_btree_del_cursor(cur
, XFS_BTREE_NOERROR
);
884 agino
= gino
+ XFS_INODES_PER_CHUNK
- 1;
885 buffer
[bufidx
].xi_startino
= XFS_AGINO_TO_INO(mp
, agno
, gino
);
886 buffer
[bufidx
].xi_alloccount
= XFS_INODES_PER_CHUNK
- gcnt
;
887 buffer
[bufidx
].xi_allocmask
= ~gfree
;
890 if (bufidx
== bcount
) {
892 if (formatter(ubuffer
, buffer
, bufidx
, &written
)) {
893 error
= XFS_ERROR(EFAULT
);
901 error
= xfs_btree_increment(cur
, 0, &tmp
);
903 xfs_btree_del_cursor(cur
, XFS_BTREE_ERROR
);
908 * The agino value has already been bumped.
909 * Just try to skip up to it.
911 agino
+= XFS_INODES_PER_CHUNK
;
919 if (formatter(ubuffer
, buffer
, bufidx
, &written
))
920 error
= XFS_ERROR(EFAULT
);
924 *lastino
= XFS_AGINO_TO_INO(mp
, agno
, agino
);
928 xfs_btree_del_cursor(cur
, (error
? XFS_BTREE_ERROR
: