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7#include "xfs.h"
8#include "xfs_fs.h"
9#include "xfs_shared.h"
10#include "xfs_format.h"
11#include "xfs_log_format.h"
12#include "xfs_trans_resv.h"
13#include "xfs_sb.h"
14#include "xfs_mount.h"
15#include "xfs_da_format.h"
16#include "xfs_da_btree.h"
17#include "xfs_inode.h"
18#include "xfs_trans.h"
19#include "xfs_bmap_btree.h"
20#include "xfs_bmap.h"
21#include "xfs_attr_sf.h"
22#include "xfs_attr_remote.h"
23#include "xfs_attr.h"
24#include "xfs_attr_leaf.h"
25#include "xfs_error.h"
26#include "xfs_trace.h"
27#include "xfs_buf_item.h"
28#include "xfs_dir2.h"
29#include "xfs_log.h"
30
31
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42
43
44
45STATIC int xfs_attr3_leaf_create(struct xfs_da_args *args,
46 xfs_dablk_t which_block, struct xfs_buf **bpp);
47STATIC int xfs_attr3_leaf_add_work(struct xfs_buf *leaf_buffer,
48 struct xfs_attr3_icleaf_hdr *ichdr,
49 struct xfs_da_args *args, int freemap_index);
50STATIC void xfs_attr3_leaf_compact(struct xfs_da_args *args,
51 struct xfs_attr3_icleaf_hdr *ichdr,
52 struct xfs_buf *leaf_buffer);
53STATIC void xfs_attr3_leaf_rebalance(xfs_da_state_t *state,
54 xfs_da_state_blk_t *blk1,
55 xfs_da_state_blk_t *blk2);
56STATIC int xfs_attr3_leaf_figure_balance(xfs_da_state_t *state,
57 xfs_da_state_blk_t *leaf_blk_1,
58 struct xfs_attr3_icleaf_hdr *ichdr1,
59 xfs_da_state_blk_t *leaf_blk_2,
60 struct xfs_attr3_icleaf_hdr *ichdr2,
61 int *number_entries_in_blk1,
62 int *number_usedbytes_in_blk1);
63
64
65
66
67STATIC void xfs_attr3_leaf_moveents(struct xfs_da_args *args,
68 struct xfs_attr_leafblock *src_leaf,
69 struct xfs_attr3_icleaf_hdr *src_ichdr, int src_start,
70 struct xfs_attr_leafblock *dst_leaf,
71 struct xfs_attr3_icleaf_hdr *dst_ichdr, int dst_start,
72 int move_count);
73STATIC int xfs_attr_leaf_entsize(xfs_attr_leafblock_t *leaf, int index);
74
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90
91static void
92xfs_attr3_leaf_firstused_from_disk(
93 struct xfs_da_geometry *geo,
94 struct xfs_attr3_icleaf_hdr *to,
95 struct xfs_attr_leafblock *from)
96{
97 struct xfs_attr3_leaf_hdr *hdr3;
98
99 if (from->hdr.info.magic == cpu_to_be16(XFS_ATTR3_LEAF_MAGIC)) {
100 hdr3 = (struct xfs_attr3_leaf_hdr *) from;
101 to->firstused = be16_to_cpu(hdr3->firstused);
102 } else {
103 to->firstused = be16_to_cpu(from->hdr.firstused);
104 }
105
106
107
108
109
110
111 if (to->firstused == XFS_ATTR3_LEAF_NULLOFF) {
112 ASSERT(!to->count && !to->usedbytes);
113 ASSERT(geo->blksize > USHRT_MAX);
114 to->firstused = geo->blksize;
115 }
116}
117
118static void
119xfs_attr3_leaf_firstused_to_disk(
120 struct xfs_da_geometry *geo,
121 struct xfs_attr_leafblock *to,
122 struct xfs_attr3_icleaf_hdr *from)
123{
124 struct xfs_attr3_leaf_hdr *hdr3;
125 uint32_t firstused;
126
127
128 ASSERT(from->firstused != XFS_ATTR3_LEAF_NULLOFF);
129
130
131
132
133
134
135 firstused = from->firstused;
136 if (firstused > USHRT_MAX) {
137 ASSERT(from->firstused == geo->blksize);
138 firstused = XFS_ATTR3_LEAF_NULLOFF;
139 }
140
141 if (from->magic == XFS_ATTR3_LEAF_MAGIC) {
142 hdr3 = (struct xfs_attr3_leaf_hdr *) to;
143 hdr3->firstused = cpu_to_be16(firstused);
144 } else {
145 to->hdr.firstused = cpu_to_be16(firstused);
146 }
147}
148
149void
150xfs_attr3_leaf_hdr_from_disk(
151 struct xfs_da_geometry *geo,
152 struct xfs_attr3_icleaf_hdr *to,
153 struct xfs_attr_leafblock *from)
154{
155 int i;
156
157 ASSERT(from->hdr.info.magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC) ||
158 from->hdr.info.magic == cpu_to_be16(XFS_ATTR3_LEAF_MAGIC));
159
160 if (from->hdr.info.magic == cpu_to_be16(XFS_ATTR3_LEAF_MAGIC)) {
161 struct xfs_attr3_leaf_hdr *hdr3 = (struct xfs_attr3_leaf_hdr *)from;
162
163 to->forw = be32_to_cpu(hdr3->info.hdr.forw);
164 to->back = be32_to_cpu(hdr3->info.hdr.back);
165 to->magic = be16_to_cpu(hdr3->info.hdr.magic);
166 to->count = be16_to_cpu(hdr3->count);
167 to->usedbytes = be16_to_cpu(hdr3->usedbytes);
168 xfs_attr3_leaf_firstused_from_disk(geo, to, from);
169 to->holes = hdr3->holes;
170
171 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
172 to->freemap[i].base = be16_to_cpu(hdr3->freemap[i].base);
173 to->freemap[i].size = be16_to_cpu(hdr3->freemap[i].size);
174 }
175 return;
176 }
177 to->forw = be32_to_cpu(from->hdr.info.forw);
178 to->back = be32_to_cpu(from->hdr.info.back);
179 to->magic = be16_to_cpu(from->hdr.info.magic);
180 to->count = be16_to_cpu(from->hdr.count);
181 to->usedbytes = be16_to_cpu(from->hdr.usedbytes);
182 xfs_attr3_leaf_firstused_from_disk(geo, to, from);
183 to->holes = from->hdr.holes;
184
185 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
186 to->freemap[i].base = be16_to_cpu(from->hdr.freemap[i].base);
187 to->freemap[i].size = be16_to_cpu(from->hdr.freemap[i].size);
188 }
189}
190
191void
192xfs_attr3_leaf_hdr_to_disk(
193 struct xfs_da_geometry *geo,
194 struct xfs_attr_leafblock *to,
195 struct xfs_attr3_icleaf_hdr *from)
196{
197 int i;
198
199 ASSERT(from->magic == XFS_ATTR_LEAF_MAGIC ||
200 from->magic == XFS_ATTR3_LEAF_MAGIC);
201
202 if (from->magic == XFS_ATTR3_LEAF_MAGIC) {
203 struct xfs_attr3_leaf_hdr *hdr3 = (struct xfs_attr3_leaf_hdr *)to;
204
205 hdr3->info.hdr.forw = cpu_to_be32(from->forw);
206 hdr3->info.hdr.back = cpu_to_be32(from->back);
207 hdr3->info.hdr.magic = cpu_to_be16(from->magic);
208 hdr3->count = cpu_to_be16(from->count);
209 hdr3->usedbytes = cpu_to_be16(from->usedbytes);
210 xfs_attr3_leaf_firstused_to_disk(geo, to, from);
211 hdr3->holes = from->holes;
212 hdr3->pad1 = 0;
213
214 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
215 hdr3->freemap[i].base = cpu_to_be16(from->freemap[i].base);
216 hdr3->freemap[i].size = cpu_to_be16(from->freemap[i].size);
217 }
218 return;
219 }
220 to->hdr.info.forw = cpu_to_be32(from->forw);
221 to->hdr.info.back = cpu_to_be32(from->back);
222 to->hdr.info.magic = cpu_to_be16(from->magic);
223 to->hdr.count = cpu_to_be16(from->count);
224 to->hdr.usedbytes = cpu_to_be16(from->usedbytes);
225 xfs_attr3_leaf_firstused_to_disk(geo, to, from);
226 to->hdr.holes = from->holes;
227 to->hdr.pad1 = 0;
228
229 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
230 to->hdr.freemap[i].base = cpu_to_be16(from->freemap[i].base);
231 to->hdr.freemap[i].size = cpu_to_be16(from->freemap[i].size);
232 }
233}
234
235static xfs_failaddr_t
236xfs_attr3_leaf_verify(
237 struct xfs_buf *bp)
238{
239 struct xfs_attr3_icleaf_hdr ichdr;
240 struct xfs_mount *mp = bp->b_mount;
241 struct xfs_attr_leafblock *leaf = bp->b_addr;
242 struct xfs_attr_leaf_entry *entries;
243 uint32_t end;
244 int i;
245 xfs_failaddr_t fa;
246
247 xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr, leaf);
248
249 fa = xfs_da3_blkinfo_verify(bp, bp->b_addr);
250 if (fa)
251 return fa;
252
253
254
255
256
257
258 if (!xfs_log_in_recovery(mp) && ichdr.count == 0)
259 return __this_address;
260
261
262
263
264
265 if (ichdr.firstused > mp->m_attr_geo->blksize)
266 return __this_address;
267 if (ichdr.firstused < xfs_attr3_leaf_hdr_size(leaf))
268 return __this_address;
269
270
271 entries = xfs_attr3_leaf_entryp(bp->b_addr);
272 if ((char *)&entries[ichdr.count] >
273 (char *)bp->b_addr + ichdr.firstused)
274 return __this_address;
275
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284
285
286
287
288 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
289 if (ichdr.freemap[i].base > mp->m_attr_geo->blksize)
290 return __this_address;
291 if (ichdr.freemap[i].base & 0x3)
292 return __this_address;
293 if (ichdr.freemap[i].size > mp->m_attr_geo->blksize)
294 return __this_address;
295 if (ichdr.freemap[i].size & 0x3)
296 return __this_address;
297
298
299 end = (uint32_t)ichdr.freemap[i].base + ichdr.freemap[i].size;
300 if (end < ichdr.freemap[i].base)
301 return __this_address;
302 if (end > mp->m_attr_geo->blksize)
303 return __this_address;
304 }
305
306 return NULL;
307}
308
309static void
310xfs_attr3_leaf_write_verify(
311 struct xfs_buf *bp)
312{
313 struct xfs_mount *mp = bp->b_mount;
314 struct xfs_buf_log_item *bip = bp->b_log_item;
315 struct xfs_attr3_leaf_hdr *hdr3 = bp->b_addr;
316 xfs_failaddr_t fa;
317
318 fa = xfs_attr3_leaf_verify(bp);
319 if (fa) {
320 xfs_verifier_error(bp, -EFSCORRUPTED, fa);
321 return;
322 }
323
324 if (!xfs_sb_version_hascrc(&mp->m_sb))
325 return;
326
327 if (bip)
328 hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
329
330 xfs_buf_update_cksum(bp, XFS_ATTR3_LEAF_CRC_OFF);
331}
332
333
334
335
336
337
338
339static void
340xfs_attr3_leaf_read_verify(
341 struct xfs_buf *bp)
342{
343 struct xfs_mount *mp = bp->b_mount;
344 xfs_failaddr_t fa;
345
346 if (xfs_sb_version_hascrc(&mp->m_sb) &&
347 !xfs_buf_verify_cksum(bp, XFS_ATTR3_LEAF_CRC_OFF))
348 xfs_verifier_error(bp, -EFSBADCRC, __this_address);
349 else {
350 fa = xfs_attr3_leaf_verify(bp);
351 if (fa)
352 xfs_verifier_error(bp, -EFSCORRUPTED, fa);
353 }
354}
355
356const struct xfs_buf_ops xfs_attr3_leaf_buf_ops = {
357 .name = "xfs_attr3_leaf",
358 .magic16 = { cpu_to_be16(XFS_ATTR_LEAF_MAGIC),
359 cpu_to_be16(XFS_ATTR3_LEAF_MAGIC) },
360 .verify_read = xfs_attr3_leaf_read_verify,
361 .verify_write = xfs_attr3_leaf_write_verify,
362 .verify_struct = xfs_attr3_leaf_verify,
363};
364
365int
366xfs_attr3_leaf_read(
367 struct xfs_trans *tp,
368 struct xfs_inode *dp,
369 xfs_dablk_t bno,
370 xfs_daddr_t mappedbno,
371 struct xfs_buf **bpp)
372{
373 int err;
374
375 err = xfs_da_read_buf(tp, dp, bno, mappedbno, bpp,
376 XFS_ATTR_FORK, &xfs_attr3_leaf_buf_ops);
377 if (!err && tp && *bpp)
378 xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_ATTR_LEAF_BUF);
379 return err;
380}
381
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383
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388
389
390STATIC int
391xfs_attr_namesp_match(int arg_flags, int ondisk_flags)
392{
393 return XFS_ATTR_NSP_ONDISK(ondisk_flags) == XFS_ATTR_NSP_ARGS_TO_ONDISK(arg_flags);
394}
395
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409
410
411int
412xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes)
413{
414 int offset;
415 int minforkoff;
416 int maxforkoff;
417 int dsize;
418 xfs_mount_t *mp = dp->i_mount;
419
420
421 offset = (XFS_LITINO(mp, dp->i_d.di_version) - bytes) >> 3;
422
423 if (dp->i_d.di_format == XFS_DINODE_FMT_DEV) {
424 minforkoff = roundup(sizeof(xfs_dev_t), 8) >> 3;
425 return (offset >= minforkoff) ? minforkoff : 0;
426 }
427
428
429
430
431
432
433
434
435
436
437
438 if (bytes <= XFS_IFORK_ASIZE(dp))
439 return dp->i_d.di_forkoff;
440
441
442
443
444
445
446 if (!(mp->m_flags & XFS_MOUNT_ATTR2))
447 return 0;
448
449 dsize = dp->i_df.if_bytes;
450
451 switch (dp->i_d.di_format) {
452 case XFS_DINODE_FMT_EXTENTS:
453
454
455
456
457
458
459
460 if (!dp->i_d.di_forkoff && dp->i_df.if_bytes >
461 xfs_default_attroffset(dp))
462 dsize = XFS_BMDR_SPACE_CALC(MINDBTPTRS);
463 break;
464 case XFS_DINODE_FMT_BTREE:
465
466
467
468
469
470
471 if (dp->i_d.di_forkoff) {
472 if (offset < dp->i_d.di_forkoff)
473 return 0;
474 return dp->i_d.di_forkoff;
475 }
476 dsize = XFS_BMAP_BROOT_SPACE(mp, dp->i_df.if_broot);
477 break;
478 }
479
480
481
482
483
484 minforkoff = max(dsize, XFS_BMDR_SPACE_CALC(MINDBTPTRS));
485 minforkoff = roundup(minforkoff, 8) >> 3;
486
487
488 maxforkoff = XFS_LITINO(mp, dp->i_d.di_version) -
489 XFS_BMDR_SPACE_CALC(MINABTPTRS);
490 maxforkoff = maxforkoff >> 3;
491
492 if (offset >= maxforkoff)
493 return maxforkoff;
494 if (offset >= minforkoff)
495 return offset;
496 return 0;
497}
498
499
500
501
502STATIC void
503xfs_sbversion_add_attr2(xfs_mount_t *mp, xfs_trans_t *tp)
504{
505 if ((mp->m_flags & XFS_MOUNT_ATTR2) &&
506 !(xfs_sb_version_hasattr2(&mp->m_sb))) {
507 spin_lock(&mp->m_sb_lock);
508 if (!xfs_sb_version_hasattr2(&mp->m_sb)) {
509 xfs_sb_version_addattr2(&mp->m_sb);
510 spin_unlock(&mp->m_sb_lock);
511 xfs_log_sb(tp);
512 } else
513 spin_unlock(&mp->m_sb_lock);
514 }
515}
516
517
518
519
520void
521xfs_attr_shortform_create(xfs_da_args_t *args)
522{
523 xfs_attr_sf_hdr_t *hdr;
524 xfs_inode_t *dp;
525 struct xfs_ifork *ifp;
526
527 trace_xfs_attr_sf_create(args);
528
529 dp = args->dp;
530 ASSERT(dp != NULL);
531 ifp = dp->i_afp;
532 ASSERT(ifp != NULL);
533 ASSERT(ifp->if_bytes == 0);
534 if (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS) {
535 ifp->if_flags &= ~XFS_IFEXTENTS;
536 dp->i_d.di_aformat = XFS_DINODE_FMT_LOCAL;
537 ifp->if_flags |= XFS_IFINLINE;
538 } else {
539 ASSERT(ifp->if_flags & XFS_IFINLINE);
540 }
541 xfs_idata_realloc(dp, sizeof(*hdr), XFS_ATTR_FORK);
542 hdr = (xfs_attr_sf_hdr_t *)ifp->if_u1.if_data;
543 hdr->count = 0;
544 hdr->totsize = cpu_to_be16(sizeof(*hdr));
545 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
546}
547
548
549
550
551
552void
553xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff)
554{
555 xfs_attr_shortform_t *sf;
556 xfs_attr_sf_entry_t *sfe;
557 int i, offset, size;
558 xfs_mount_t *mp;
559 xfs_inode_t *dp;
560 struct xfs_ifork *ifp;
561
562 trace_xfs_attr_sf_add(args);
563
564 dp = args->dp;
565 mp = dp->i_mount;
566 dp->i_d.di_forkoff = forkoff;
567
568 ifp = dp->i_afp;
569 ASSERT(ifp->if_flags & XFS_IFINLINE);
570 sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
571 sfe = &sf->list[0];
572 for (i = 0; i < sf->hdr.count; sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
573#ifdef DEBUG
574 if (sfe->namelen != args->namelen)
575 continue;
576 if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
577 continue;
578 if (!xfs_attr_namesp_match(args->flags, sfe->flags))
579 continue;
580 ASSERT(0);
581#endif
582 }
583
584 offset = (char *)sfe - (char *)sf;
585 size = XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
586 xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
587 sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
588 sfe = (xfs_attr_sf_entry_t *)((char *)sf + offset);
589
590 sfe->namelen = args->namelen;
591 sfe->valuelen = args->valuelen;
592 sfe->flags = XFS_ATTR_NSP_ARGS_TO_ONDISK(args->flags);
593 memcpy(sfe->nameval, args->name, args->namelen);
594 memcpy(&sfe->nameval[args->namelen], args->value, args->valuelen);
595 sf->hdr.count++;
596 be16_add_cpu(&sf->hdr.totsize, size);
597 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
598
599 xfs_sbversion_add_attr2(mp, args->trans);
600}
601
602
603
604
605
606void
607xfs_attr_fork_remove(
608 struct xfs_inode *ip,
609 struct xfs_trans *tp)
610{
611 xfs_idestroy_fork(ip, XFS_ATTR_FORK);
612 ip->i_d.di_forkoff = 0;
613 ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
614
615 ASSERT(ip->i_d.di_anextents == 0);
616 ASSERT(ip->i_afp == NULL);
617
618 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
619}
620
621
622
623
624int
625xfs_attr_shortform_remove(xfs_da_args_t *args)
626{
627 xfs_attr_shortform_t *sf;
628 xfs_attr_sf_entry_t *sfe;
629 int base, size=0, end, totsize, i;
630 xfs_mount_t *mp;
631 xfs_inode_t *dp;
632
633 trace_xfs_attr_sf_remove(args);
634
635 dp = args->dp;
636 mp = dp->i_mount;
637 base = sizeof(xfs_attr_sf_hdr_t);
638 sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data;
639 sfe = &sf->list[0];
640 end = sf->hdr.count;
641 for (i = 0; i < end; sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
642 base += size, i++) {
643 size = XFS_ATTR_SF_ENTSIZE(sfe);
644 if (sfe->namelen != args->namelen)
645 continue;
646 if (memcmp(sfe->nameval, args->name, args->namelen) != 0)
647 continue;
648 if (!xfs_attr_namesp_match(args->flags, sfe->flags))
649 continue;
650 break;
651 }
652 if (i == end)
653 return -ENOATTR;
654
655
656
657
658 end = base + size;
659 totsize = be16_to_cpu(sf->hdr.totsize);
660 if (end != totsize)
661 memmove(&((char *)sf)[base], &((char *)sf)[end], totsize - end);
662 sf->hdr.count--;
663 be16_add_cpu(&sf->hdr.totsize, -size);
664
665
666
667
668 totsize -= size;
669 if (totsize == sizeof(xfs_attr_sf_hdr_t) &&
670 (mp->m_flags & XFS_MOUNT_ATTR2) &&
671 (dp->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
672 !(args->op_flags & XFS_DA_OP_ADDNAME)) {
673 xfs_attr_fork_remove(dp, args->trans);
674 } else {
675 xfs_idata_realloc(dp, -size, XFS_ATTR_FORK);
676 dp->i_d.di_forkoff = xfs_attr_shortform_bytesfit(dp, totsize);
677 ASSERT(dp->i_d.di_forkoff);
678 ASSERT(totsize > sizeof(xfs_attr_sf_hdr_t) ||
679 (args->op_flags & XFS_DA_OP_ADDNAME) ||
680 !(mp->m_flags & XFS_MOUNT_ATTR2) ||
681 dp->i_d.di_format == XFS_DINODE_FMT_BTREE);
682 xfs_trans_log_inode(args->trans, dp,
683 XFS_ILOG_CORE | XFS_ILOG_ADATA);
684 }
685
686 xfs_sbversion_add_attr2(mp, args->trans);
687
688 return 0;
689}
690
691
692
693
694
695int
696xfs_attr_shortform_lookup(xfs_da_args_t *args)
697{
698 xfs_attr_shortform_t *sf;
699 xfs_attr_sf_entry_t *sfe;
700 int i;
701 struct xfs_ifork *ifp;
702
703 trace_xfs_attr_sf_lookup(args);
704
705 ifp = args->dp->i_afp;
706 ASSERT(ifp->if_flags & XFS_IFINLINE);
707 sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
708 sfe = &sf->list[0];
709 for (i = 0; i < sf->hdr.count;
710 sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
711 if (sfe->namelen != args->namelen)
712 continue;
713 if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
714 continue;
715 if (!xfs_attr_namesp_match(args->flags, sfe->flags))
716 continue;
717 return -EEXIST;
718 }
719 return -ENOATTR;
720}
721
722
723
724
725
726int
727xfs_attr_shortform_getvalue(xfs_da_args_t *args)
728{
729 xfs_attr_shortform_t *sf;
730 xfs_attr_sf_entry_t *sfe;
731 int i;
732
733 ASSERT(args->dp->i_afp->if_flags == XFS_IFINLINE);
734 sf = (xfs_attr_shortform_t *)args->dp->i_afp->if_u1.if_data;
735 sfe = &sf->list[0];
736 for (i = 0; i < sf->hdr.count;
737 sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
738 if (sfe->namelen != args->namelen)
739 continue;
740 if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
741 continue;
742 if (!xfs_attr_namesp_match(args->flags, sfe->flags))
743 continue;
744 if (args->flags & ATTR_KERNOVAL) {
745 args->valuelen = sfe->valuelen;
746 return -EEXIST;
747 }
748 if (args->valuelen < sfe->valuelen) {
749 args->valuelen = sfe->valuelen;
750 return -ERANGE;
751 }
752 args->valuelen = sfe->valuelen;
753 memcpy(args->value, &sfe->nameval[args->namelen],
754 args->valuelen);
755 return -EEXIST;
756 }
757 return -ENOATTR;
758}
759
760
761
762
763
764int
765xfs_attr_shortform_to_leaf(
766 struct xfs_da_args *args,
767 struct xfs_buf **leaf_bp)
768{
769 struct xfs_inode *dp;
770 struct xfs_attr_shortform *sf;
771 struct xfs_attr_sf_entry *sfe;
772 struct xfs_da_args nargs;
773 char *tmpbuffer;
774 int error, i, size;
775 xfs_dablk_t blkno;
776 struct xfs_buf *bp;
777 struct xfs_ifork *ifp;
778
779 trace_xfs_attr_sf_to_leaf(args);
780
781 dp = args->dp;
782 ifp = dp->i_afp;
783 sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
784 size = be16_to_cpu(sf->hdr.totsize);
785 tmpbuffer = kmem_alloc(size, KM_SLEEP);
786 ASSERT(tmpbuffer != NULL);
787 memcpy(tmpbuffer, ifp->if_u1.if_data, size);
788 sf = (xfs_attr_shortform_t *)tmpbuffer;
789
790 xfs_idata_realloc(dp, -size, XFS_ATTR_FORK);
791 xfs_bmap_local_to_extents_empty(dp, XFS_ATTR_FORK);
792
793 bp = NULL;
794 error = xfs_da_grow_inode(args, &blkno);
795 if (error) {
796
797
798
799
800 if (error == -EIO)
801 goto out;
802 xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
803 memcpy(ifp->if_u1.if_data, tmpbuffer, size);
804 goto out;
805 }
806
807 ASSERT(blkno == 0);
808 error = xfs_attr3_leaf_create(args, blkno, &bp);
809 if (error) {
810
811 if (bp && (xfs_da_shrink_inode(args, 0, bp) != 0))
812 goto out;
813 xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
814 memcpy(ifp->if_u1.if_data, tmpbuffer, size);
815 goto out;
816 }
817
818 memset((char *)&nargs, 0, sizeof(nargs));
819 nargs.dp = dp;
820 nargs.geo = args->geo;
821 nargs.total = args->total;
822 nargs.whichfork = XFS_ATTR_FORK;
823 nargs.trans = args->trans;
824 nargs.op_flags = XFS_DA_OP_OKNOENT;
825
826 sfe = &sf->list[0];
827 for (i = 0; i < sf->hdr.count; i++) {
828 nargs.name = sfe->nameval;
829 nargs.namelen = sfe->namelen;
830 nargs.value = &sfe->nameval[nargs.namelen];
831 nargs.valuelen = sfe->valuelen;
832 nargs.hashval = xfs_da_hashname(sfe->nameval,
833 sfe->namelen);
834 nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(sfe->flags);
835 error = xfs_attr3_leaf_lookup_int(bp, &nargs);
836 ASSERT(error == -ENOATTR);
837 error = xfs_attr3_leaf_add(bp, &nargs);
838 ASSERT(error != -ENOSPC);
839 if (error)
840 goto out;
841 sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
842 }
843 error = 0;
844 *leaf_bp = bp;
845out:
846 kmem_free(tmpbuffer);
847 return error;
848}
849
850
851
852
853
854int
855xfs_attr_shortform_allfit(
856 struct xfs_buf *bp,
857 struct xfs_inode *dp)
858{
859 struct xfs_attr_leafblock *leaf;
860 struct xfs_attr_leaf_entry *entry;
861 xfs_attr_leaf_name_local_t *name_loc;
862 struct xfs_attr3_icleaf_hdr leafhdr;
863 int bytes;
864 int i;
865 struct xfs_mount *mp = bp->b_mount;
866
867 leaf = bp->b_addr;
868 xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &leafhdr, leaf);
869 entry = xfs_attr3_leaf_entryp(leaf);
870
871 bytes = sizeof(struct xfs_attr_sf_hdr);
872 for (i = 0; i < leafhdr.count; entry++, i++) {
873 if (entry->flags & XFS_ATTR_INCOMPLETE)
874 continue;
875 if (!(entry->flags & XFS_ATTR_LOCAL))
876 return 0;
877 name_loc = xfs_attr3_leaf_name_local(leaf, i);
878 if (name_loc->namelen >= XFS_ATTR_SF_ENTSIZE_MAX)
879 return 0;
880 if (be16_to_cpu(name_loc->valuelen) >= XFS_ATTR_SF_ENTSIZE_MAX)
881 return 0;
882 bytes += sizeof(struct xfs_attr_sf_entry) - 1
883 + name_loc->namelen
884 + be16_to_cpu(name_loc->valuelen);
885 }
886 if ((dp->i_mount->m_flags & XFS_MOUNT_ATTR2) &&
887 (dp->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
888 (bytes == sizeof(struct xfs_attr_sf_hdr)))
889 return -1;
890 return xfs_attr_shortform_bytesfit(dp, bytes);
891}
892
893
894xfs_failaddr_t
895xfs_attr_shortform_verify(
896 struct xfs_inode *ip)
897{
898 struct xfs_attr_shortform *sfp;
899 struct xfs_attr_sf_entry *sfep;
900 struct xfs_attr_sf_entry *next_sfep;
901 char *endp;
902 struct xfs_ifork *ifp;
903 int i;
904 int size;
905
906 ASSERT(ip->i_d.di_aformat == XFS_DINODE_FMT_LOCAL);
907 ifp = XFS_IFORK_PTR(ip, XFS_ATTR_FORK);
908 sfp = (struct xfs_attr_shortform *)ifp->if_u1.if_data;
909 size = ifp->if_bytes;
910
911
912
913
914 if (size < sizeof(struct xfs_attr_sf_hdr))
915 return __this_address;
916
917 endp = (char *)sfp + size;
918
919
920 sfep = &sfp->list[0];
921 for (i = 0; i < sfp->hdr.count; i++) {
922
923
924
925
926
927 if (((char *)sfep + sizeof(*sfep)) >= endp)
928 return __this_address;
929
930
931 if (sfep->namelen == 0)
932 return __this_address;
933
934
935
936
937
938
939 next_sfep = XFS_ATTR_SF_NEXTENTRY(sfep);
940 if ((char *)next_sfep > endp)
941 return __this_address;
942
943
944
945
946
947
948 if (sfep->flags & ~XFS_ATTR_NSP_ONDISK_MASK)
949 return __this_address;
950
951
952
953
954
955
956 if (hweight8(sfep->flags & XFS_ATTR_NSP_ONDISK_MASK) > 1)
957 return __this_address;
958
959 sfep = next_sfep;
960 }
961 if ((void *)sfep != (void *)endp)
962 return __this_address;
963
964 return NULL;
965}
966
967
968
969
970int
971xfs_attr3_leaf_to_shortform(
972 struct xfs_buf *bp,
973 struct xfs_da_args *args,
974 int forkoff)
975{
976 struct xfs_attr_leafblock *leaf;
977 struct xfs_attr3_icleaf_hdr ichdr;
978 struct xfs_attr_leaf_entry *entry;
979 struct xfs_attr_leaf_name_local *name_loc;
980 struct xfs_da_args nargs;
981 struct xfs_inode *dp = args->dp;
982 char *tmpbuffer;
983 int error;
984 int i;
985
986 trace_xfs_attr_leaf_to_sf(args);
987
988 tmpbuffer = kmem_alloc(args->geo->blksize, KM_SLEEP);
989 if (!tmpbuffer)
990 return -ENOMEM;
991
992 memcpy(tmpbuffer, bp->b_addr, args->geo->blksize);
993
994 leaf = (xfs_attr_leafblock_t *)tmpbuffer;
995 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
996 entry = xfs_attr3_leaf_entryp(leaf);
997
998
999 memset(bp->b_addr, 0, args->geo->blksize);
1000
1001
1002
1003
1004 error = xfs_da_shrink_inode(args, 0, bp);
1005 if (error)
1006 goto out;
1007
1008 if (forkoff == -1) {
1009 ASSERT(dp->i_mount->m_flags & XFS_MOUNT_ATTR2);
1010 ASSERT(dp->i_d.di_format != XFS_DINODE_FMT_BTREE);
1011 xfs_attr_fork_remove(dp, args->trans);
1012 goto out;
1013 }
1014
1015 xfs_attr_shortform_create(args);
1016
1017
1018
1019
1020 memset((char *)&nargs, 0, sizeof(nargs));
1021 nargs.geo = args->geo;
1022 nargs.dp = dp;
1023 nargs.total = args->total;
1024 nargs.whichfork = XFS_ATTR_FORK;
1025 nargs.trans = args->trans;
1026 nargs.op_flags = XFS_DA_OP_OKNOENT;
1027
1028 for (i = 0; i < ichdr.count; entry++, i++) {
1029 if (entry->flags & XFS_ATTR_INCOMPLETE)
1030 continue;
1031 if (!entry->nameidx)
1032 continue;
1033 ASSERT(entry->flags & XFS_ATTR_LOCAL);
1034 name_loc = xfs_attr3_leaf_name_local(leaf, i);
1035 nargs.name = name_loc->nameval;
1036 nargs.namelen = name_loc->namelen;
1037 nargs.value = &name_loc->nameval[nargs.namelen];
1038 nargs.valuelen = be16_to_cpu(name_loc->valuelen);
1039 nargs.hashval = be32_to_cpu(entry->hashval);
1040 nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(entry->flags);
1041 xfs_attr_shortform_add(&nargs, forkoff);
1042 }
1043 error = 0;
1044
1045out:
1046 kmem_free(tmpbuffer);
1047 return error;
1048}
1049
1050
1051
1052
1053int
1054xfs_attr3_leaf_to_node(
1055 struct xfs_da_args *args)
1056{
1057 struct xfs_attr_leafblock *leaf;
1058 struct xfs_attr3_icleaf_hdr icleafhdr;
1059 struct xfs_attr_leaf_entry *entries;
1060 struct xfs_da_node_entry *btree;
1061 struct xfs_da3_icnode_hdr icnodehdr;
1062 struct xfs_da_intnode *node;
1063 struct xfs_inode *dp = args->dp;
1064 struct xfs_mount *mp = dp->i_mount;
1065 struct xfs_buf *bp1 = NULL;
1066 struct xfs_buf *bp2 = NULL;
1067 xfs_dablk_t blkno;
1068 int error;
1069
1070 trace_xfs_attr_leaf_to_node(args);
1071
1072 error = xfs_da_grow_inode(args, &blkno);
1073 if (error)
1074 goto out;
1075 error = xfs_attr3_leaf_read(args->trans, dp, 0, -1, &bp1);
1076 if (error)
1077 goto out;
1078
1079 error = xfs_da_get_buf(args->trans, dp, blkno, -1, &bp2, XFS_ATTR_FORK);
1080 if (error)
1081 goto out;
1082
1083
1084 xfs_trans_buf_set_type(args->trans, bp2, XFS_BLFT_ATTR_LEAF_BUF);
1085 bp2->b_ops = bp1->b_ops;
1086 memcpy(bp2->b_addr, bp1->b_addr, args->geo->blksize);
1087 if (xfs_sb_version_hascrc(&mp->m_sb)) {
1088 struct xfs_da3_blkinfo *hdr3 = bp2->b_addr;
1089 hdr3->blkno = cpu_to_be64(bp2->b_bn);
1090 }
1091 xfs_trans_log_buf(args->trans, bp2, 0, args->geo->blksize - 1);
1092
1093
1094
1095
1096 error = xfs_da3_node_create(args, 0, 1, &bp1, XFS_ATTR_FORK);
1097 if (error)
1098 goto out;
1099 node = bp1->b_addr;
1100 dp->d_ops->node_hdr_from_disk(&icnodehdr, node);
1101 btree = dp->d_ops->node_tree_p(node);
1102
1103 leaf = bp2->b_addr;
1104 xfs_attr3_leaf_hdr_from_disk(args->geo, &icleafhdr, leaf);
1105 entries = xfs_attr3_leaf_entryp(leaf);
1106
1107
1108 btree[0].hashval = entries[icleafhdr.count - 1].hashval;
1109 btree[0].before = cpu_to_be32(blkno);
1110 icnodehdr.count = 1;
1111 dp->d_ops->node_hdr_to_disk(node, &icnodehdr);
1112 xfs_trans_log_buf(args->trans, bp1, 0, args->geo->blksize - 1);
1113 error = 0;
1114out:
1115 return error;
1116}
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126STATIC int
1127xfs_attr3_leaf_create(
1128 struct xfs_da_args *args,
1129 xfs_dablk_t blkno,
1130 struct xfs_buf **bpp)
1131{
1132 struct xfs_attr_leafblock *leaf;
1133 struct xfs_attr3_icleaf_hdr ichdr;
1134 struct xfs_inode *dp = args->dp;
1135 struct xfs_mount *mp = dp->i_mount;
1136 struct xfs_buf *bp;
1137 int error;
1138
1139 trace_xfs_attr_leaf_create(args);
1140
1141 error = xfs_da_get_buf(args->trans, args->dp, blkno, -1, &bp,
1142 XFS_ATTR_FORK);
1143 if (error)
1144 return error;
1145 bp->b_ops = &xfs_attr3_leaf_buf_ops;
1146 xfs_trans_buf_set_type(args->trans, bp, XFS_BLFT_ATTR_LEAF_BUF);
1147 leaf = bp->b_addr;
1148 memset(leaf, 0, args->geo->blksize);
1149
1150 memset(&ichdr, 0, sizeof(ichdr));
1151 ichdr.firstused = args->geo->blksize;
1152
1153 if (xfs_sb_version_hascrc(&mp->m_sb)) {
1154 struct xfs_da3_blkinfo *hdr3 = bp->b_addr;
1155
1156 ichdr.magic = XFS_ATTR3_LEAF_MAGIC;
1157
1158 hdr3->blkno = cpu_to_be64(bp->b_bn);
1159 hdr3->owner = cpu_to_be64(dp->i_ino);
1160 uuid_copy(&hdr3->uuid, &mp->m_sb.sb_meta_uuid);
1161
1162 ichdr.freemap[0].base = sizeof(struct xfs_attr3_leaf_hdr);
1163 } else {
1164 ichdr.magic = XFS_ATTR_LEAF_MAGIC;
1165 ichdr.freemap[0].base = sizeof(struct xfs_attr_leaf_hdr);
1166 }
1167 ichdr.freemap[0].size = ichdr.firstused - ichdr.freemap[0].base;
1168
1169 xfs_attr3_leaf_hdr_to_disk(args->geo, leaf, &ichdr);
1170 xfs_trans_log_buf(args->trans, bp, 0, args->geo->blksize - 1);
1171
1172 *bpp = bp;
1173 return 0;
1174}
1175
1176
1177
1178
1179int
1180xfs_attr3_leaf_split(
1181 struct xfs_da_state *state,
1182 struct xfs_da_state_blk *oldblk,
1183 struct xfs_da_state_blk *newblk)
1184{
1185 xfs_dablk_t blkno;
1186 int error;
1187
1188 trace_xfs_attr_leaf_split(state->args);
1189
1190
1191
1192
1193 ASSERT(oldblk->magic == XFS_ATTR_LEAF_MAGIC);
1194 error = xfs_da_grow_inode(state->args, &blkno);
1195 if (error)
1196 return error;
1197 error = xfs_attr3_leaf_create(state->args, blkno, &newblk->bp);
1198 if (error)
1199 return error;
1200 newblk->blkno = blkno;
1201 newblk->magic = XFS_ATTR_LEAF_MAGIC;
1202
1203
1204
1205
1206
1207 xfs_attr3_leaf_rebalance(state, oldblk, newblk);
1208 error = xfs_da3_blk_link(state, oldblk, newblk);
1209 if (error)
1210 return error;
1211
1212
1213
1214
1215
1216
1217
1218
1219 if (state->inleaf) {
1220 trace_xfs_attr_leaf_add_old(state->args);
1221 error = xfs_attr3_leaf_add(oldblk->bp, state->args);
1222 } else {
1223 trace_xfs_attr_leaf_add_new(state->args);
1224 error = xfs_attr3_leaf_add(newblk->bp, state->args);
1225 }
1226
1227
1228
1229
1230 oldblk->hashval = xfs_attr_leaf_lasthash(oldblk->bp, NULL);
1231 newblk->hashval = xfs_attr_leaf_lasthash(newblk->bp, NULL);
1232 return error;
1233}
1234
1235
1236
1237
1238int
1239xfs_attr3_leaf_add(
1240 struct xfs_buf *bp,
1241 struct xfs_da_args *args)
1242{
1243 struct xfs_attr_leafblock *leaf;
1244 struct xfs_attr3_icleaf_hdr ichdr;
1245 int tablesize;
1246 int entsize;
1247 int sum;
1248 int tmp;
1249 int i;
1250
1251 trace_xfs_attr_leaf_add(args);
1252
1253 leaf = bp->b_addr;
1254 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
1255 ASSERT(args->index >= 0 && args->index <= ichdr.count);
1256 entsize = xfs_attr_leaf_newentsize(args, NULL);
1257
1258
1259
1260
1261
1262 tablesize = (ichdr.count + 1) * sizeof(xfs_attr_leaf_entry_t)
1263 + xfs_attr3_leaf_hdr_size(leaf);
1264 for (sum = 0, i = XFS_ATTR_LEAF_MAPSIZE - 1; i >= 0; i--) {
1265 if (tablesize > ichdr.firstused) {
1266 sum += ichdr.freemap[i].size;
1267 continue;
1268 }
1269 if (!ichdr.freemap[i].size)
1270 continue;
1271 tmp = entsize;
1272 if (ichdr.freemap[i].base < ichdr.firstused)
1273 tmp += sizeof(xfs_attr_leaf_entry_t);
1274 if (ichdr.freemap[i].size >= tmp) {
1275 tmp = xfs_attr3_leaf_add_work(bp, &ichdr, args, i);
1276 goto out_log_hdr;
1277 }
1278 sum += ichdr.freemap[i].size;
1279 }
1280
1281
1282
1283
1284
1285
1286 if (!ichdr.holes && sum < entsize)
1287 return -ENOSPC;
1288
1289
1290
1291
1292
1293 xfs_attr3_leaf_compact(args, &ichdr, bp);
1294
1295
1296
1297
1298
1299 if (ichdr.freemap[0].size < (entsize + sizeof(xfs_attr_leaf_entry_t))) {
1300 tmp = -ENOSPC;
1301 goto out_log_hdr;
1302 }
1303
1304 tmp = xfs_attr3_leaf_add_work(bp, &ichdr, args, 0);
1305
1306out_log_hdr:
1307 xfs_attr3_leaf_hdr_to_disk(args->geo, leaf, &ichdr);
1308 xfs_trans_log_buf(args->trans, bp,
1309 XFS_DA_LOGRANGE(leaf, &leaf->hdr,
1310 xfs_attr3_leaf_hdr_size(leaf)));
1311 return tmp;
1312}
1313
1314
1315
1316
1317STATIC int
1318xfs_attr3_leaf_add_work(
1319 struct xfs_buf *bp,
1320 struct xfs_attr3_icleaf_hdr *ichdr,
1321 struct xfs_da_args *args,
1322 int mapindex)
1323{
1324 struct xfs_attr_leafblock *leaf;
1325 struct xfs_attr_leaf_entry *entry;
1326 struct xfs_attr_leaf_name_local *name_loc;
1327 struct xfs_attr_leaf_name_remote *name_rmt;
1328 struct xfs_mount *mp;
1329 int tmp;
1330 int i;
1331
1332 trace_xfs_attr_leaf_add_work(args);
1333
1334 leaf = bp->b_addr;
1335 ASSERT(mapindex >= 0 && mapindex < XFS_ATTR_LEAF_MAPSIZE);
1336 ASSERT(args->index >= 0 && args->index <= ichdr->count);
1337
1338
1339
1340
1341 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
1342 if (args->index < ichdr->count) {
1343 tmp = ichdr->count - args->index;
1344 tmp *= sizeof(xfs_attr_leaf_entry_t);
1345 memmove(entry + 1, entry, tmp);
1346 xfs_trans_log_buf(args->trans, bp,
1347 XFS_DA_LOGRANGE(leaf, entry, tmp + sizeof(*entry)));
1348 }
1349 ichdr->count++;
1350
1351
1352
1353
1354 mp = args->trans->t_mountp;
1355 ASSERT(ichdr->freemap[mapindex].base < args->geo->blksize);
1356 ASSERT((ichdr->freemap[mapindex].base & 0x3) == 0);
1357 ASSERT(ichdr->freemap[mapindex].size >=
1358 xfs_attr_leaf_newentsize(args, NULL));
1359 ASSERT(ichdr->freemap[mapindex].size < args->geo->blksize);
1360 ASSERT((ichdr->freemap[mapindex].size & 0x3) == 0);
1361
1362 ichdr->freemap[mapindex].size -= xfs_attr_leaf_newentsize(args, &tmp);
1363
1364 entry->nameidx = cpu_to_be16(ichdr->freemap[mapindex].base +
1365 ichdr->freemap[mapindex].size);
1366 entry->hashval = cpu_to_be32(args->hashval);
1367 entry->flags = tmp ? XFS_ATTR_LOCAL : 0;
1368 entry->flags |= XFS_ATTR_NSP_ARGS_TO_ONDISK(args->flags);
1369 if (args->op_flags & XFS_DA_OP_RENAME) {
1370 entry->flags |= XFS_ATTR_INCOMPLETE;
1371 if ((args->blkno2 == args->blkno) &&
1372 (args->index2 <= args->index)) {
1373 args->index2++;
1374 }
1375 }
1376 xfs_trans_log_buf(args->trans, bp,
1377 XFS_DA_LOGRANGE(leaf, entry, sizeof(*entry)));
1378 ASSERT((args->index == 0) ||
1379 (be32_to_cpu(entry->hashval) >= be32_to_cpu((entry-1)->hashval)));
1380 ASSERT((args->index == ichdr->count - 1) ||
1381 (be32_to_cpu(entry->hashval) <= be32_to_cpu((entry+1)->hashval)));
1382
1383
1384
1385
1386
1387
1388
1389
1390 if (entry->flags & XFS_ATTR_LOCAL) {
1391 name_loc = xfs_attr3_leaf_name_local(leaf, args->index);
1392 name_loc->namelen = args->namelen;
1393 name_loc->valuelen = cpu_to_be16(args->valuelen);
1394 memcpy((char *)name_loc->nameval, args->name, args->namelen);
1395 memcpy((char *)&name_loc->nameval[args->namelen], args->value,
1396 be16_to_cpu(name_loc->valuelen));
1397 } else {
1398 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
1399 name_rmt->namelen = args->namelen;
1400 memcpy((char *)name_rmt->name, args->name, args->namelen);
1401 entry->flags |= XFS_ATTR_INCOMPLETE;
1402
1403 name_rmt->valuelen = 0;
1404 name_rmt->valueblk = 0;
1405 args->rmtblkno = 1;
1406 args->rmtblkcnt = xfs_attr3_rmt_blocks(mp, args->valuelen);
1407 args->rmtvaluelen = args->valuelen;
1408 }
1409 xfs_trans_log_buf(args->trans, bp,
1410 XFS_DA_LOGRANGE(leaf, xfs_attr3_leaf_name(leaf, args->index),
1411 xfs_attr_leaf_entsize(leaf, args->index)));
1412
1413
1414
1415
1416 if (be16_to_cpu(entry->nameidx) < ichdr->firstused)
1417 ichdr->firstused = be16_to_cpu(entry->nameidx);
1418
1419 ASSERT(ichdr->firstused >= ichdr->count * sizeof(xfs_attr_leaf_entry_t)
1420 + xfs_attr3_leaf_hdr_size(leaf));
1421 tmp = (ichdr->count - 1) * sizeof(xfs_attr_leaf_entry_t)
1422 + xfs_attr3_leaf_hdr_size(leaf);
1423
1424 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
1425 if (ichdr->freemap[i].base == tmp) {
1426 ichdr->freemap[i].base += sizeof(xfs_attr_leaf_entry_t);
1427 ichdr->freemap[i].size -= sizeof(xfs_attr_leaf_entry_t);
1428 }
1429 }
1430 ichdr->usedbytes += xfs_attr_leaf_entsize(leaf, args->index);
1431 return 0;
1432}
1433
1434
1435
1436
1437STATIC void
1438xfs_attr3_leaf_compact(
1439 struct xfs_da_args *args,
1440 struct xfs_attr3_icleaf_hdr *ichdr_dst,
1441 struct xfs_buf *bp)
1442{
1443 struct xfs_attr_leafblock *leaf_src;
1444 struct xfs_attr_leafblock *leaf_dst;
1445 struct xfs_attr3_icleaf_hdr ichdr_src;
1446 struct xfs_trans *trans = args->trans;
1447 char *tmpbuffer;
1448
1449 trace_xfs_attr_leaf_compact(args);
1450
1451 tmpbuffer = kmem_alloc(args->geo->blksize, KM_SLEEP);
1452 memcpy(tmpbuffer, bp->b_addr, args->geo->blksize);
1453 memset(bp->b_addr, 0, args->geo->blksize);
1454 leaf_src = (xfs_attr_leafblock_t *)tmpbuffer;
1455 leaf_dst = bp->b_addr;
1456
1457
1458
1459
1460
1461
1462 memcpy(bp->b_addr, tmpbuffer, xfs_attr3_leaf_hdr_size(leaf_src));
1463
1464
1465 ichdr_src = *ichdr_dst;
1466 ichdr_dst->firstused = args->geo->blksize;
1467 ichdr_dst->usedbytes = 0;
1468 ichdr_dst->count = 0;
1469 ichdr_dst->holes = 0;
1470 ichdr_dst->freemap[0].base = xfs_attr3_leaf_hdr_size(leaf_src);
1471 ichdr_dst->freemap[0].size = ichdr_dst->firstused -
1472 ichdr_dst->freemap[0].base;
1473
1474
1475 xfs_attr3_leaf_hdr_to_disk(args->geo, leaf_dst, ichdr_dst);
1476
1477
1478
1479
1480
1481 xfs_attr3_leaf_moveents(args, leaf_src, &ichdr_src, 0,
1482 leaf_dst, ichdr_dst, 0, ichdr_src.count);
1483
1484
1485
1486
1487 xfs_trans_log_buf(trans, bp, 0, args->geo->blksize - 1);
1488
1489 kmem_free(tmpbuffer);
1490}
1491
1492
1493
1494
1495
1496static int
1497xfs_attr3_leaf_order(
1498 struct xfs_buf *leaf1_bp,
1499 struct xfs_attr3_icleaf_hdr *leaf1hdr,
1500 struct xfs_buf *leaf2_bp,
1501 struct xfs_attr3_icleaf_hdr *leaf2hdr)
1502{
1503 struct xfs_attr_leaf_entry *entries1;
1504 struct xfs_attr_leaf_entry *entries2;
1505
1506 entries1 = xfs_attr3_leaf_entryp(leaf1_bp->b_addr);
1507 entries2 = xfs_attr3_leaf_entryp(leaf2_bp->b_addr);
1508 if (leaf1hdr->count > 0 && leaf2hdr->count > 0 &&
1509 ((be32_to_cpu(entries2[0].hashval) <
1510 be32_to_cpu(entries1[0].hashval)) ||
1511 (be32_to_cpu(entries2[leaf2hdr->count - 1].hashval) <
1512 be32_to_cpu(entries1[leaf1hdr->count - 1].hashval)))) {
1513 return 1;
1514 }
1515 return 0;
1516}
1517
1518int
1519xfs_attr_leaf_order(
1520 struct xfs_buf *leaf1_bp,
1521 struct xfs_buf *leaf2_bp)
1522{
1523 struct xfs_attr3_icleaf_hdr ichdr1;
1524 struct xfs_attr3_icleaf_hdr ichdr2;
1525 struct xfs_mount *mp = leaf1_bp->b_mount;
1526
1527 xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr1, leaf1_bp->b_addr);
1528 xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr2, leaf2_bp->b_addr);
1529 return xfs_attr3_leaf_order(leaf1_bp, &ichdr1, leaf2_bp, &ichdr2);
1530}
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544STATIC void
1545xfs_attr3_leaf_rebalance(
1546 struct xfs_da_state *state,
1547 struct xfs_da_state_blk *blk1,
1548 struct xfs_da_state_blk *blk2)
1549{
1550 struct xfs_da_args *args;
1551 struct xfs_attr_leafblock *leaf1;
1552 struct xfs_attr_leafblock *leaf2;
1553 struct xfs_attr3_icleaf_hdr ichdr1;
1554 struct xfs_attr3_icleaf_hdr ichdr2;
1555 struct xfs_attr_leaf_entry *entries1;
1556 struct xfs_attr_leaf_entry *entries2;
1557 int count;
1558 int totallen;
1559 int max;
1560 int space;
1561 int swap;
1562
1563
1564
1565
1566 ASSERT(blk1->magic == XFS_ATTR_LEAF_MAGIC);
1567 ASSERT(blk2->magic == XFS_ATTR_LEAF_MAGIC);
1568 leaf1 = blk1->bp->b_addr;
1569 leaf2 = blk2->bp->b_addr;
1570 xfs_attr3_leaf_hdr_from_disk(state->args->geo, &ichdr1, leaf1);
1571 xfs_attr3_leaf_hdr_from_disk(state->args->geo, &ichdr2, leaf2);
1572 ASSERT(ichdr2.count == 0);
1573 args = state->args;
1574
1575 trace_xfs_attr_leaf_rebalance(args);
1576
1577
1578
1579
1580
1581
1582
1583 swap = 0;
1584 if (xfs_attr3_leaf_order(blk1->bp, &ichdr1, blk2->bp, &ichdr2)) {
1585 swap(blk1, blk2);
1586
1587
1588 swap(ichdr1, ichdr2);
1589
1590 leaf1 = blk1->bp->b_addr;
1591 leaf2 = blk2->bp->b_addr;
1592 swap = 1;
1593 }
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603 state->inleaf = xfs_attr3_leaf_figure_balance(state, blk1, &ichdr1,
1604 blk2, &ichdr2,
1605 &count, &totallen);
1606 if (swap)
1607 state->inleaf = !state->inleaf;
1608
1609
1610
1611
1612 if (count < ichdr1.count) {
1613
1614
1615
1616
1617 count = ichdr1.count - count;
1618 space = ichdr1.usedbytes - totallen;
1619 space += count * sizeof(xfs_attr_leaf_entry_t);
1620
1621
1622
1623
1624 max = ichdr2.firstused - xfs_attr3_leaf_hdr_size(leaf1);
1625 max -= ichdr2.count * sizeof(xfs_attr_leaf_entry_t);
1626 if (space > max)
1627 xfs_attr3_leaf_compact(args, &ichdr2, blk2->bp);
1628
1629
1630
1631
1632 xfs_attr3_leaf_moveents(args, leaf1, &ichdr1,
1633 ichdr1.count - count, leaf2, &ichdr2, 0, count);
1634
1635 } else if (count > ichdr1.count) {
1636
1637
1638
1639
1640 ASSERT(0);
1641
1642
1643
1644
1645
1646 count -= ichdr1.count;
1647 space = totallen - ichdr1.usedbytes;
1648 space += count * sizeof(xfs_attr_leaf_entry_t);
1649
1650
1651
1652
1653 max = ichdr1.firstused - xfs_attr3_leaf_hdr_size(leaf1);
1654 max -= ichdr1.count * sizeof(xfs_attr_leaf_entry_t);
1655 if (space > max)
1656 xfs_attr3_leaf_compact(args, &ichdr1, blk1->bp);
1657
1658
1659
1660
1661 xfs_attr3_leaf_moveents(args, leaf2, &ichdr2, 0, leaf1, &ichdr1,
1662 ichdr1.count, count);
1663 }
1664
1665 xfs_attr3_leaf_hdr_to_disk(state->args->geo, leaf1, &ichdr1);
1666 xfs_attr3_leaf_hdr_to_disk(state->args->geo, leaf2, &ichdr2);
1667 xfs_trans_log_buf(args->trans, blk1->bp, 0, args->geo->blksize - 1);
1668 xfs_trans_log_buf(args->trans, blk2->bp, 0, args->geo->blksize - 1);
1669
1670
1671
1672
1673 entries1 = xfs_attr3_leaf_entryp(leaf1);
1674 entries2 = xfs_attr3_leaf_entryp(leaf2);
1675 blk1->hashval = be32_to_cpu(entries1[ichdr1.count - 1].hashval);
1676 blk2->hashval = be32_to_cpu(entries2[ichdr2.count - 1].hashval);
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690 if (blk1->index > ichdr1.count) {
1691 ASSERT(state->inleaf == 0);
1692 blk2->index = blk1->index - ichdr1.count;
1693 args->index = args->index2 = blk2->index;
1694 args->blkno = args->blkno2 = blk2->blkno;
1695 } else if (blk1->index == ichdr1.count) {
1696 if (state->inleaf) {
1697 args->index = blk1->index;
1698 args->blkno = blk1->blkno;
1699 args->index2 = 0;
1700 args->blkno2 = blk2->blkno;
1701 } else {
1702
1703
1704
1705
1706
1707 blk2->index = blk1->index - ichdr1.count;
1708 args->index = blk2->index;
1709 args->blkno = blk2->blkno;
1710 if (!state->extravalid) {
1711
1712
1713
1714
1715
1716 args->index2 = blk2->index;
1717 args->blkno2 = blk2->blkno;
1718 }
1719 }
1720 } else {
1721 ASSERT(state->inleaf == 1);
1722 args->index = args->index2 = blk1->index;
1723 args->blkno = args->blkno2 = blk1->blkno;
1724 }
1725}
1726
1727
1728
1729
1730
1731
1732
1733
1734STATIC int
1735xfs_attr3_leaf_figure_balance(
1736 struct xfs_da_state *state,
1737 struct xfs_da_state_blk *blk1,
1738 struct xfs_attr3_icleaf_hdr *ichdr1,
1739 struct xfs_da_state_blk *blk2,
1740 struct xfs_attr3_icleaf_hdr *ichdr2,
1741 int *countarg,
1742 int *usedbytesarg)
1743{
1744 struct xfs_attr_leafblock *leaf1 = blk1->bp->b_addr;
1745 struct xfs_attr_leafblock *leaf2 = blk2->bp->b_addr;
1746 struct xfs_attr_leaf_entry *entry;
1747 int count;
1748 int max;
1749 int index;
1750 int totallen = 0;
1751 int half;
1752 int lastdelta;
1753 int foundit = 0;
1754 int tmp;
1755
1756
1757
1758
1759
1760 max = ichdr1->count + ichdr2->count;
1761 half = (max + 1) * sizeof(*entry);
1762 half += ichdr1->usedbytes + ichdr2->usedbytes +
1763 xfs_attr_leaf_newentsize(state->args, NULL);
1764 half /= 2;
1765 lastdelta = state->args->geo->blksize;
1766 entry = xfs_attr3_leaf_entryp(leaf1);
1767 for (count = index = 0; count < max; entry++, index++, count++) {
1768
1769#define XFS_ATTR_ABS(A) (((A) < 0) ? -(A) : (A))
1770
1771
1772
1773 if (count == blk1->index) {
1774 tmp = totallen + sizeof(*entry) +
1775 xfs_attr_leaf_newentsize(state->args, NULL);
1776 if (XFS_ATTR_ABS(half - tmp) > lastdelta)
1777 break;
1778 lastdelta = XFS_ATTR_ABS(half - tmp);
1779 totallen = tmp;
1780 foundit = 1;
1781 }
1782
1783
1784
1785
1786 if (count == ichdr1->count) {
1787 leaf1 = leaf2;
1788 entry = xfs_attr3_leaf_entryp(leaf1);
1789 index = 0;
1790 }
1791
1792
1793
1794
1795 tmp = totallen + sizeof(*entry) + xfs_attr_leaf_entsize(leaf1,
1796 index);
1797 if (XFS_ATTR_ABS(half - tmp) > lastdelta)
1798 break;
1799 lastdelta = XFS_ATTR_ABS(half - tmp);
1800 totallen = tmp;
1801#undef XFS_ATTR_ABS
1802 }
1803
1804
1805
1806
1807
1808 totallen -= count * sizeof(*entry);
1809 if (foundit) {
1810 totallen -= sizeof(*entry) +
1811 xfs_attr_leaf_newentsize(state->args, NULL);
1812 }
1813
1814 *countarg = count;
1815 *usedbytesarg = totallen;
1816 return foundit;
1817}
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834int
1835xfs_attr3_leaf_toosmall(
1836 struct xfs_da_state *state,
1837 int *action)
1838{
1839 struct xfs_attr_leafblock *leaf;
1840 struct xfs_da_state_blk *blk;
1841 struct xfs_attr3_icleaf_hdr ichdr;
1842 struct xfs_buf *bp;
1843 xfs_dablk_t blkno;
1844 int bytes;
1845 int forward;
1846 int error;
1847 int retval;
1848 int i;
1849
1850 trace_xfs_attr_leaf_toosmall(state->args);
1851
1852
1853
1854
1855
1856
1857 blk = &state->path.blk[ state->path.active-1 ];
1858 leaf = blk->bp->b_addr;
1859 xfs_attr3_leaf_hdr_from_disk(state->args->geo, &ichdr, leaf);
1860 bytes = xfs_attr3_leaf_hdr_size(leaf) +
1861 ichdr.count * sizeof(xfs_attr_leaf_entry_t) +
1862 ichdr.usedbytes;
1863 if (bytes > (state->args->geo->blksize >> 1)) {
1864 *action = 0;
1865 return 0;
1866 }
1867
1868
1869
1870
1871
1872
1873
1874 if (ichdr.count == 0) {
1875
1876
1877
1878
1879 forward = (ichdr.forw != 0);
1880 memcpy(&state->altpath, &state->path, sizeof(state->path));
1881 error = xfs_da3_path_shift(state, &state->altpath, forward,
1882 0, &retval);
1883 if (error)
1884 return error;
1885 if (retval) {
1886 *action = 0;
1887 } else {
1888 *action = 2;
1889 }
1890 return 0;
1891 }
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901 forward = ichdr.forw < ichdr.back;
1902 for (i = 0; i < 2; forward = !forward, i++) {
1903 struct xfs_attr3_icleaf_hdr ichdr2;
1904 if (forward)
1905 blkno = ichdr.forw;
1906 else
1907 blkno = ichdr.back;
1908 if (blkno == 0)
1909 continue;
1910 error = xfs_attr3_leaf_read(state->args->trans, state->args->dp,
1911 blkno, -1, &bp);
1912 if (error)
1913 return error;
1914
1915 xfs_attr3_leaf_hdr_from_disk(state->args->geo, &ichdr2, bp->b_addr);
1916
1917 bytes = state->args->geo->blksize -
1918 (state->args->geo->blksize >> 2) -
1919 ichdr.usedbytes - ichdr2.usedbytes -
1920 ((ichdr.count + ichdr2.count) *
1921 sizeof(xfs_attr_leaf_entry_t)) -
1922 xfs_attr3_leaf_hdr_size(leaf);
1923
1924 xfs_trans_brelse(state->args->trans, bp);
1925 if (bytes >= 0)
1926 break;
1927 }
1928 if (i >= 2) {
1929 *action = 0;
1930 return 0;
1931 }
1932
1933
1934
1935
1936
1937 memcpy(&state->altpath, &state->path, sizeof(state->path));
1938 if (blkno < blk->blkno) {
1939 error = xfs_da3_path_shift(state, &state->altpath, forward,
1940 0, &retval);
1941 } else {
1942 error = xfs_da3_path_shift(state, &state->path, forward,
1943 0, &retval);
1944 }
1945 if (error)
1946 return error;
1947 if (retval) {
1948 *action = 0;
1949 } else {
1950 *action = 1;
1951 }
1952 return 0;
1953}
1954
1955
1956
1957
1958
1959
1960
1961int
1962xfs_attr3_leaf_remove(
1963 struct xfs_buf *bp,
1964 struct xfs_da_args *args)
1965{
1966 struct xfs_attr_leafblock *leaf;
1967 struct xfs_attr3_icleaf_hdr ichdr;
1968 struct xfs_attr_leaf_entry *entry;
1969 int before;
1970 int after;
1971 int smallest;
1972 int entsize;
1973 int tablesize;
1974 int tmp;
1975 int i;
1976
1977 trace_xfs_attr_leaf_remove(args);
1978
1979 leaf = bp->b_addr;
1980 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
1981
1982 ASSERT(ichdr.count > 0 && ichdr.count < args->geo->blksize / 8);
1983 ASSERT(args->index >= 0 && args->index < ichdr.count);
1984 ASSERT(ichdr.firstused >= ichdr.count * sizeof(*entry) +
1985 xfs_attr3_leaf_hdr_size(leaf));
1986
1987 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
1988
1989 ASSERT(be16_to_cpu(entry->nameidx) >= ichdr.firstused);
1990 ASSERT(be16_to_cpu(entry->nameidx) < args->geo->blksize);
1991
1992
1993
1994
1995
1996
1997
1998 tablesize = ichdr.count * sizeof(xfs_attr_leaf_entry_t)
1999 + xfs_attr3_leaf_hdr_size(leaf);
2000 tmp = ichdr.freemap[0].size;
2001 before = after = -1;
2002 smallest = XFS_ATTR_LEAF_MAPSIZE - 1;
2003 entsize = xfs_attr_leaf_entsize(leaf, args->index);
2004 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
2005 ASSERT(ichdr.freemap[i].base < args->geo->blksize);
2006 ASSERT(ichdr.freemap[i].size < args->geo->blksize);
2007 if (ichdr.freemap[i].base == tablesize) {
2008 ichdr.freemap[i].base -= sizeof(xfs_attr_leaf_entry_t);
2009 ichdr.freemap[i].size += sizeof(xfs_attr_leaf_entry_t);
2010 }
2011
2012 if (ichdr.freemap[i].base + ichdr.freemap[i].size ==
2013 be16_to_cpu(entry->nameidx)) {
2014 before = i;
2015 } else if (ichdr.freemap[i].base ==
2016 (be16_to_cpu(entry->nameidx) + entsize)) {
2017 after = i;
2018 } else if (ichdr.freemap[i].size < tmp) {
2019 tmp = ichdr.freemap[i].size;
2020 smallest = i;
2021 }
2022 }
2023
2024
2025
2026
2027
2028 if ((before >= 0) || (after >= 0)) {
2029 if ((before >= 0) && (after >= 0)) {
2030 ichdr.freemap[before].size += entsize;
2031 ichdr.freemap[before].size += ichdr.freemap[after].size;
2032 ichdr.freemap[after].base = 0;
2033 ichdr.freemap[after].size = 0;
2034 } else if (before >= 0) {
2035 ichdr.freemap[before].size += entsize;
2036 } else {
2037 ichdr.freemap[after].base = be16_to_cpu(entry->nameidx);
2038 ichdr.freemap[after].size += entsize;
2039 }
2040 } else {
2041
2042
2043
2044 if (ichdr.freemap[smallest].size < entsize) {
2045 ichdr.freemap[smallest].base = be16_to_cpu(entry->nameidx);
2046 ichdr.freemap[smallest].size = entsize;
2047 }
2048 }
2049
2050
2051
2052
2053 if (be16_to_cpu(entry->nameidx) == ichdr.firstused)
2054 smallest = 1;
2055 else
2056 smallest = 0;
2057
2058
2059
2060
2061 memset(xfs_attr3_leaf_name(leaf, args->index), 0, entsize);
2062 ichdr.usedbytes -= entsize;
2063 xfs_trans_log_buf(args->trans, bp,
2064 XFS_DA_LOGRANGE(leaf, xfs_attr3_leaf_name(leaf, args->index),
2065 entsize));
2066
2067 tmp = (ichdr.count - args->index) * sizeof(xfs_attr_leaf_entry_t);
2068 memmove(entry, entry + 1, tmp);
2069 ichdr.count--;
2070 xfs_trans_log_buf(args->trans, bp,
2071 XFS_DA_LOGRANGE(leaf, entry, tmp + sizeof(xfs_attr_leaf_entry_t)));
2072
2073 entry = &xfs_attr3_leaf_entryp(leaf)[ichdr.count];
2074 memset(entry, 0, sizeof(xfs_attr_leaf_entry_t));
2075
2076
2077
2078
2079
2080
2081
2082 if (smallest) {
2083 tmp = args->geo->blksize;
2084 entry = xfs_attr3_leaf_entryp(leaf);
2085 for (i = ichdr.count - 1; i >= 0; entry++, i--) {
2086 ASSERT(be16_to_cpu(entry->nameidx) >= ichdr.firstused);
2087 ASSERT(be16_to_cpu(entry->nameidx) < args->geo->blksize);
2088
2089 if (be16_to_cpu(entry->nameidx) < tmp)
2090 tmp = be16_to_cpu(entry->nameidx);
2091 }
2092 ichdr.firstused = tmp;
2093 ASSERT(ichdr.firstused != 0);
2094 } else {
2095 ichdr.holes = 1;
2096 }
2097 xfs_attr3_leaf_hdr_to_disk(args->geo, leaf, &ichdr);
2098 xfs_trans_log_buf(args->trans, bp,
2099 XFS_DA_LOGRANGE(leaf, &leaf->hdr,
2100 xfs_attr3_leaf_hdr_size(leaf)));
2101
2102
2103
2104
2105
2106 tmp = ichdr.usedbytes + xfs_attr3_leaf_hdr_size(leaf) +
2107 ichdr.count * sizeof(xfs_attr_leaf_entry_t);
2108
2109 return tmp < args->geo->magicpct;
2110}
2111
2112
2113
2114
2115void
2116xfs_attr3_leaf_unbalance(
2117 struct xfs_da_state *state,
2118 struct xfs_da_state_blk *drop_blk,
2119 struct xfs_da_state_blk *save_blk)
2120{
2121 struct xfs_attr_leafblock *drop_leaf = drop_blk->bp->b_addr;
2122 struct xfs_attr_leafblock *save_leaf = save_blk->bp->b_addr;
2123 struct xfs_attr3_icleaf_hdr drophdr;
2124 struct xfs_attr3_icleaf_hdr savehdr;
2125 struct xfs_attr_leaf_entry *entry;
2126
2127 trace_xfs_attr_leaf_unbalance(state->args);
2128
2129 drop_leaf = drop_blk->bp->b_addr;
2130 save_leaf = save_blk->bp->b_addr;
2131 xfs_attr3_leaf_hdr_from_disk(state->args->geo, &drophdr, drop_leaf);
2132 xfs_attr3_leaf_hdr_from_disk(state->args->geo, &savehdr, save_leaf);
2133 entry = xfs_attr3_leaf_entryp(drop_leaf);
2134
2135
2136
2137
2138 drop_blk->hashval = be32_to_cpu(entry[drophdr.count - 1].hashval);
2139
2140
2141
2142
2143
2144
2145 if (savehdr.holes == 0) {
2146
2147
2148
2149
2150 if (xfs_attr3_leaf_order(save_blk->bp, &savehdr,
2151 drop_blk->bp, &drophdr)) {
2152 xfs_attr3_leaf_moveents(state->args,
2153 drop_leaf, &drophdr, 0,
2154 save_leaf, &savehdr, 0,
2155 drophdr.count);
2156 } else {
2157 xfs_attr3_leaf_moveents(state->args,
2158 drop_leaf, &drophdr, 0,
2159 save_leaf, &savehdr,
2160 savehdr.count, drophdr.count);
2161 }
2162 } else {
2163
2164
2165
2166
2167 struct xfs_attr_leafblock *tmp_leaf;
2168 struct xfs_attr3_icleaf_hdr tmphdr;
2169
2170 tmp_leaf = kmem_zalloc(state->args->geo->blksize, KM_SLEEP);
2171
2172
2173
2174
2175
2176
2177 memcpy(tmp_leaf, save_leaf, xfs_attr3_leaf_hdr_size(save_leaf));
2178
2179 memset(&tmphdr, 0, sizeof(tmphdr));
2180 tmphdr.magic = savehdr.magic;
2181 tmphdr.forw = savehdr.forw;
2182 tmphdr.back = savehdr.back;
2183 tmphdr.firstused = state->args->geo->blksize;
2184
2185
2186 xfs_attr3_leaf_hdr_to_disk(state->args->geo, tmp_leaf, &tmphdr);
2187
2188 if (xfs_attr3_leaf_order(save_blk->bp, &savehdr,
2189 drop_blk->bp, &drophdr)) {
2190 xfs_attr3_leaf_moveents(state->args,
2191 drop_leaf, &drophdr, 0,
2192 tmp_leaf, &tmphdr, 0,
2193 drophdr.count);
2194 xfs_attr3_leaf_moveents(state->args,
2195 save_leaf, &savehdr, 0,
2196 tmp_leaf, &tmphdr, tmphdr.count,
2197 savehdr.count);
2198 } else {
2199 xfs_attr3_leaf_moveents(state->args,
2200 save_leaf, &savehdr, 0,
2201 tmp_leaf, &tmphdr, 0,
2202 savehdr.count);
2203 xfs_attr3_leaf_moveents(state->args,
2204 drop_leaf, &drophdr, 0,
2205 tmp_leaf, &tmphdr, tmphdr.count,
2206 drophdr.count);
2207 }
2208 memcpy(save_leaf, tmp_leaf, state->args->geo->blksize);
2209 savehdr = tmphdr;
2210 kmem_free(tmp_leaf);
2211 }
2212
2213 xfs_attr3_leaf_hdr_to_disk(state->args->geo, save_leaf, &savehdr);
2214 xfs_trans_log_buf(state->args->trans, save_blk->bp, 0,
2215 state->args->geo->blksize - 1);
2216
2217
2218
2219
2220 entry = xfs_attr3_leaf_entryp(save_leaf);
2221 save_blk->hashval = be32_to_cpu(entry[savehdr.count - 1].hashval);
2222}
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241int
2242xfs_attr3_leaf_lookup_int(
2243 struct xfs_buf *bp,
2244 struct xfs_da_args *args)
2245{
2246 struct xfs_attr_leafblock *leaf;
2247 struct xfs_attr3_icleaf_hdr ichdr;
2248 struct xfs_attr_leaf_entry *entry;
2249 struct xfs_attr_leaf_entry *entries;
2250 struct xfs_attr_leaf_name_local *name_loc;
2251 struct xfs_attr_leaf_name_remote *name_rmt;
2252 xfs_dahash_t hashval;
2253 int probe;
2254 int span;
2255
2256 trace_xfs_attr_leaf_lookup(args);
2257
2258 leaf = bp->b_addr;
2259 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
2260 entries = xfs_attr3_leaf_entryp(leaf);
2261 if (ichdr.count >= args->geo->blksize / 8)
2262 return -EFSCORRUPTED;
2263
2264
2265
2266
2267 hashval = args->hashval;
2268 probe = span = ichdr.count / 2;
2269 for (entry = &entries[probe]; span > 4; entry = &entries[probe]) {
2270 span /= 2;
2271 if (be32_to_cpu(entry->hashval) < hashval)
2272 probe += span;
2273 else if (be32_to_cpu(entry->hashval) > hashval)
2274 probe -= span;
2275 else
2276 break;
2277 }
2278 if (!(probe >= 0 && (!ichdr.count || probe < ichdr.count)))
2279 return -EFSCORRUPTED;
2280 if (!(span <= 4 || be32_to_cpu(entry->hashval) == hashval))
2281 return -EFSCORRUPTED;
2282
2283
2284
2285
2286
2287 while (probe > 0 && be32_to_cpu(entry->hashval) >= hashval) {
2288 entry--;
2289 probe--;
2290 }
2291 while (probe < ichdr.count &&
2292 be32_to_cpu(entry->hashval) < hashval) {
2293 entry++;
2294 probe++;
2295 }
2296 if (probe == ichdr.count || be32_to_cpu(entry->hashval) != hashval) {
2297 args->index = probe;
2298 return -ENOATTR;
2299 }
2300
2301
2302
2303
2304 for (; probe < ichdr.count && (be32_to_cpu(entry->hashval) == hashval);
2305 entry++, probe++) {
2306
2307
2308
2309
2310
2311
2312
2313 if ((args->flags & XFS_ATTR_INCOMPLETE) !=
2314 (entry->flags & XFS_ATTR_INCOMPLETE)) {
2315 continue;
2316 }
2317 if (entry->flags & XFS_ATTR_LOCAL) {
2318 name_loc = xfs_attr3_leaf_name_local(leaf, probe);
2319 if (name_loc->namelen != args->namelen)
2320 continue;
2321 if (memcmp(args->name, name_loc->nameval,
2322 args->namelen) != 0)
2323 continue;
2324 if (!xfs_attr_namesp_match(args->flags, entry->flags))
2325 continue;
2326 args->index = probe;
2327 return -EEXIST;
2328 } else {
2329 name_rmt = xfs_attr3_leaf_name_remote(leaf, probe);
2330 if (name_rmt->namelen != args->namelen)
2331 continue;
2332 if (memcmp(args->name, name_rmt->name,
2333 args->namelen) != 0)
2334 continue;
2335 if (!xfs_attr_namesp_match(args->flags, entry->flags))
2336 continue;
2337 args->index = probe;
2338 args->rmtvaluelen = be32_to_cpu(name_rmt->valuelen);
2339 args->rmtblkno = be32_to_cpu(name_rmt->valueblk);
2340 args->rmtblkcnt = xfs_attr3_rmt_blocks(
2341 args->dp->i_mount,
2342 args->rmtvaluelen);
2343 return -EEXIST;
2344 }
2345 }
2346 args->index = probe;
2347 return -ENOATTR;
2348}
2349
2350
2351
2352
2353
2354int
2355xfs_attr3_leaf_getvalue(
2356 struct xfs_buf *bp,
2357 struct xfs_da_args *args)
2358{
2359 struct xfs_attr_leafblock *leaf;
2360 struct xfs_attr3_icleaf_hdr ichdr;
2361 struct xfs_attr_leaf_entry *entry;
2362 struct xfs_attr_leaf_name_local *name_loc;
2363 struct xfs_attr_leaf_name_remote *name_rmt;
2364 int valuelen;
2365
2366 leaf = bp->b_addr;
2367 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
2368 ASSERT(ichdr.count < args->geo->blksize / 8);
2369 ASSERT(args->index < ichdr.count);
2370
2371 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
2372 if (entry->flags & XFS_ATTR_LOCAL) {
2373 name_loc = xfs_attr3_leaf_name_local(leaf, args->index);
2374 ASSERT(name_loc->namelen == args->namelen);
2375 ASSERT(memcmp(args->name, name_loc->nameval, args->namelen) == 0);
2376 valuelen = be16_to_cpu(name_loc->valuelen);
2377 if (args->flags & ATTR_KERNOVAL) {
2378 args->valuelen = valuelen;
2379 return 0;
2380 }
2381 if (args->valuelen < valuelen) {
2382 args->valuelen = valuelen;
2383 return -ERANGE;
2384 }
2385 args->valuelen = valuelen;
2386 memcpy(args->value, &name_loc->nameval[args->namelen], valuelen);
2387 } else {
2388 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
2389 ASSERT(name_rmt->namelen == args->namelen);
2390 ASSERT(memcmp(args->name, name_rmt->name, args->namelen) == 0);
2391 args->rmtvaluelen = be32_to_cpu(name_rmt->valuelen);
2392 args->rmtblkno = be32_to_cpu(name_rmt->valueblk);
2393 args->rmtblkcnt = xfs_attr3_rmt_blocks(args->dp->i_mount,
2394 args->rmtvaluelen);
2395 if (args->flags & ATTR_KERNOVAL) {
2396 args->valuelen = args->rmtvaluelen;
2397 return 0;
2398 }
2399 if (args->valuelen < args->rmtvaluelen) {
2400 args->valuelen = args->rmtvaluelen;
2401 return -ERANGE;
2402 }
2403 args->valuelen = args->rmtvaluelen;
2404 }
2405 return 0;
2406}
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417STATIC void
2418xfs_attr3_leaf_moveents(
2419 struct xfs_da_args *args,
2420 struct xfs_attr_leafblock *leaf_s,
2421 struct xfs_attr3_icleaf_hdr *ichdr_s,
2422 int start_s,
2423 struct xfs_attr_leafblock *leaf_d,
2424 struct xfs_attr3_icleaf_hdr *ichdr_d,
2425 int start_d,
2426 int count)
2427{
2428 struct xfs_attr_leaf_entry *entry_s;
2429 struct xfs_attr_leaf_entry *entry_d;
2430 int desti;
2431 int tmp;
2432 int i;
2433
2434
2435
2436
2437 if (count == 0)
2438 return;
2439
2440
2441
2442
2443 ASSERT(ichdr_s->magic == XFS_ATTR_LEAF_MAGIC ||
2444 ichdr_s->magic == XFS_ATTR3_LEAF_MAGIC);
2445 ASSERT(ichdr_s->magic == ichdr_d->magic);
2446 ASSERT(ichdr_s->count > 0 && ichdr_s->count < args->geo->blksize / 8);
2447 ASSERT(ichdr_s->firstused >= (ichdr_s->count * sizeof(*entry_s))
2448 + xfs_attr3_leaf_hdr_size(leaf_s));
2449 ASSERT(ichdr_d->count < args->geo->blksize / 8);
2450 ASSERT(ichdr_d->firstused >= (ichdr_d->count * sizeof(*entry_d))
2451 + xfs_attr3_leaf_hdr_size(leaf_d));
2452
2453 ASSERT(start_s < ichdr_s->count);
2454 ASSERT(start_d <= ichdr_d->count);
2455 ASSERT(count <= ichdr_s->count);
2456
2457
2458
2459
2460
2461 if (start_d < ichdr_d->count) {
2462 tmp = ichdr_d->count - start_d;
2463 tmp *= sizeof(xfs_attr_leaf_entry_t);
2464 entry_s = &xfs_attr3_leaf_entryp(leaf_d)[start_d];
2465 entry_d = &xfs_attr3_leaf_entryp(leaf_d)[start_d + count];
2466 memmove(entry_d, entry_s, tmp);
2467 }
2468
2469
2470
2471
2472
2473 entry_s = &xfs_attr3_leaf_entryp(leaf_s)[start_s];
2474 entry_d = &xfs_attr3_leaf_entryp(leaf_d)[start_d];
2475 desti = start_d;
2476 for (i = 0; i < count; entry_s++, entry_d++, desti++, i++) {
2477 ASSERT(be16_to_cpu(entry_s->nameidx) >= ichdr_s->firstused);
2478 tmp = xfs_attr_leaf_entsize(leaf_s, start_s + i);
2479#ifdef GROT
2480
2481
2482
2483
2484
2485 if (entry_s->flags & XFS_ATTR_INCOMPLETE) {
2486 memset(xfs_attr3_leaf_name(leaf_s, start_s + i), 0, tmp);
2487 ichdr_s->usedbytes -= tmp;
2488 ichdr_s->count -= 1;
2489 entry_d--;
2490 desti--;
2491 if ((start_s + i) < offset)
2492 result++;
2493 } else {
2494#endif
2495 ichdr_d->firstused -= tmp;
2496
2497 entry_d->hashval = entry_s->hashval;
2498 entry_d->nameidx = cpu_to_be16(ichdr_d->firstused);
2499 entry_d->flags = entry_s->flags;
2500 ASSERT(be16_to_cpu(entry_d->nameidx) + tmp
2501 <= args->geo->blksize);
2502 memmove(xfs_attr3_leaf_name(leaf_d, desti),
2503 xfs_attr3_leaf_name(leaf_s, start_s + i), tmp);
2504 ASSERT(be16_to_cpu(entry_s->nameidx) + tmp
2505 <= args->geo->blksize);
2506 memset(xfs_attr3_leaf_name(leaf_s, start_s + i), 0, tmp);
2507 ichdr_s->usedbytes -= tmp;
2508 ichdr_d->usedbytes += tmp;
2509 ichdr_s->count -= 1;
2510 ichdr_d->count += 1;
2511 tmp = ichdr_d->count * sizeof(xfs_attr_leaf_entry_t)
2512 + xfs_attr3_leaf_hdr_size(leaf_d);
2513 ASSERT(ichdr_d->firstused >= tmp);
2514#ifdef GROT
2515 }
2516#endif
2517 }
2518
2519
2520
2521
2522 if (start_s == ichdr_s->count) {
2523 tmp = count * sizeof(xfs_attr_leaf_entry_t);
2524 entry_s = &xfs_attr3_leaf_entryp(leaf_s)[start_s];
2525 ASSERT(((char *)entry_s + tmp) <=
2526 ((char *)leaf_s + args->geo->blksize));
2527 memset(entry_s, 0, tmp);
2528 } else {
2529
2530
2531
2532
2533 tmp = (ichdr_s->count - count) * sizeof(xfs_attr_leaf_entry_t);
2534 entry_s = &xfs_attr3_leaf_entryp(leaf_s)[start_s + count];
2535 entry_d = &xfs_attr3_leaf_entryp(leaf_s)[start_s];
2536 memmove(entry_d, entry_s, tmp);
2537
2538 tmp = count * sizeof(xfs_attr_leaf_entry_t);
2539 entry_s = &xfs_attr3_leaf_entryp(leaf_s)[ichdr_s->count];
2540 ASSERT(((char *)entry_s + tmp) <=
2541 ((char *)leaf_s + args->geo->blksize));
2542 memset(entry_s, 0, tmp);
2543 }
2544
2545
2546
2547
2548 ichdr_d->freemap[0].base = xfs_attr3_leaf_hdr_size(leaf_d);
2549 ichdr_d->freemap[0].base += ichdr_d->count * sizeof(xfs_attr_leaf_entry_t);
2550 ichdr_d->freemap[0].size = ichdr_d->firstused - ichdr_d->freemap[0].base;
2551 ichdr_d->freemap[1].base = 0;
2552 ichdr_d->freemap[2].base = 0;
2553 ichdr_d->freemap[1].size = 0;
2554 ichdr_d->freemap[2].size = 0;
2555 ichdr_s->holes = 1;
2556}
2557
2558
2559
2560
2561xfs_dahash_t
2562xfs_attr_leaf_lasthash(
2563 struct xfs_buf *bp,
2564 int *count)
2565{
2566 struct xfs_attr3_icleaf_hdr ichdr;
2567 struct xfs_attr_leaf_entry *entries;
2568 struct xfs_mount *mp = bp->b_mount;
2569
2570 xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr, bp->b_addr);
2571 entries = xfs_attr3_leaf_entryp(bp->b_addr);
2572 if (count)
2573 *count = ichdr.count;
2574 if (!ichdr.count)
2575 return 0;
2576 return be32_to_cpu(entries[ichdr.count - 1].hashval);
2577}
2578
2579
2580
2581
2582
2583STATIC int
2584xfs_attr_leaf_entsize(xfs_attr_leafblock_t *leaf, int index)
2585{
2586 struct xfs_attr_leaf_entry *entries;
2587 xfs_attr_leaf_name_local_t *name_loc;
2588 xfs_attr_leaf_name_remote_t *name_rmt;
2589 int size;
2590
2591 entries = xfs_attr3_leaf_entryp(leaf);
2592 if (entries[index].flags & XFS_ATTR_LOCAL) {
2593 name_loc = xfs_attr3_leaf_name_local(leaf, index);
2594 size = xfs_attr_leaf_entsize_local(name_loc->namelen,
2595 be16_to_cpu(name_loc->valuelen));
2596 } else {
2597 name_rmt = xfs_attr3_leaf_name_remote(leaf, index);
2598 size = xfs_attr_leaf_entsize_remote(name_rmt->namelen);
2599 }
2600 return size;
2601}
2602
2603
2604
2605
2606
2607
2608
2609int
2610xfs_attr_leaf_newentsize(
2611 struct xfs_da_args *args,
2612 int *local)
2613{
2614 int size;
2615
2616 size = xfs_attr_leaf_entsize_local(args->namelen, args->valuelen);
2617 if (size < xfs_attr_leaf_entsize_local_max(args->geo->blksize)) {
2618 if (local)
2619 *local = 1;
2620 return size;
2621 }
2622 if (local)
2623 *local = 0;
2624 return xfs_attr_leaf_entsize_remote(args->namelen);
2625}
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635int
2636xfs_attr3_leaf_clearflag(
2637 struct xfs_da_args *args)
2638{
2639 struct xfs_attr_leafblock *leaf;
2640 struct xfs_attr_leaf_entry *entry;
2641 struct xfs_attr_leaf_name_remote *name_rmt;
2642 struct xfs_buf *bp;
2643 int error;
2644#ifdef DEBUG
2645 struct xfs_attr3_icleaf_hdr ichdr;
2646 xfs_attr_leaf_name_local_t *name_loc;
2647 int namelen;
2648 char *name;
2649#endif
2650
2651 trace_xfs_attr_leaf_clearflag(args);
2652
2653
2654
2655 error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
2656 if (error)
2657 return error;
2658
2659 leaf = bp->b_addr;
2660 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
2661 ASSERT(entry->flags & XFS_ATTR_INCOMPLETE);
2662
2663#ifdef DEBUG
2664 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
2665 ASSERT(args->index < ichdr.count);
2666 ASSERT(args->index >= 0);
2667
2668 if (entry->flags & XFS_ATTR_LOCAL) {
2669 name_loc = xfs_attr3_leaf_name_local(leaf, args->index);
2670 namelen = name_loc->namelen;
2671 name = (char *)name_loc->nameval;
2672 } else {
2673 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
2674 namelen = name_rmt->namelen;
2675 name = (char *)name_rmt->name;
2676 }
2677 ASSERT(be32_to_cpu(entry->hashval) == args->hashval);
2678 ASSERT(namelen == args->namelen);
2679 ASSERT(memcmp(name, args->name, namelen) == 0);
2680#endif
2681
2682 entry->flags &= ~XFS_ATTR_INCOMPLETE;
2683 xfs_trans_log_buf(args->trans, bp,
2684 XFS_DA_LOGRANGE(leaf, entry, sizeof(*entry)));
2685
2686 if (args->rmtblkno) {
2687 ASSERT((entry->flags & XFS_ATTR_LOCAL) == 0);
2688 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
2689 name_rmt->valueblk = cpu_to_be32(args->rmtblkno);
2690 name_rmt->valuelen = cpu_to_be32(args->rmtvaluelen);
2691 xfs_trans_log_buf(args->trans, bp,
2692 XFS_DA_LOGRANGE(leaf, name_rmt, sizeof(*name_rmt)));
2693 }
2694
2695
2696
2697
2698 return xfs_trans_roll_inode(&args->trans, args->dp);
2699}
2700
2701
2702
2703
2704int
2705xfs_attr3_leaf_setflag(
2706 struct xfs_da_args *args)
2707{
2708 struct xfs_attr_leafblock *leaf;
2709 struct xfs_attr_leaf_entry *entry;
2710 struct xfs_attr_leaf_name_remote *name_rmt;
2711 struct xfs_buf *bp;
2712 int error;
2713#ifdef DEBUG
2714 struct xfs_attr3_icleaf_hdr ichdr;
2715#endif
2716
2717 trace_xfs_attr_leaf_setflag(args);
2718
2719
2720
2721
2722 error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
2723 if (error)
2724 return error;
2725
2726 leaf = bp->b_addr;
2727#ifdef DEBUG
2728 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
2729 ASSERT(args->index < ichdr.count);
2730 ASSERT(args->index >= 0);
2731#endif
2732 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
2733
2734 ASSERT((entry->flags & XFS_ATTR_INCOMPLETE) == 0);
2735 entry->flags |= XFS_ATTR_INCOMPLETE;
2736 xfs_trans_log_buf(args->trans, bp,
2737 XFS_DA_LOGRANGE(leaf, entry, sizeof(*entry)));
2738 if ((entry->flags & XFS_ATTR_LOCAL) == 0) {
2739 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
2740 name_rmt->valueblk = 0;
2741 name_rmt->valuelen = 0;
2742 xfs_trans_log_buf(args->trans, bp,
2743 XFS_DA_LOGRANGE(leaf, name_rmt, sizeof(*name_rmt)));
2744 }
2745
2746
2747
2748
2749 return xfs_trans_roll_inode(&args->trans, args->dp);
2750}
2751
2752
2753
2754
2755
2756
2757
2758
2759int
2760xfs_attr3_leaf_flipflags(
2761 struct xfs_da_args *args)
2762{
2763 struct xfs_attr_leafblock *leaf1;
2764 struct xfs_attr_leafblock *leaf2;
2765 struct xfs_attr_leaf_entry *entry1;
2766 struct xfs_attr_leaf_entry *entry2;
2767 struct xfs_attr_leaf_name_remote *name_rmt;
2768 struct xfs_buf *bp1;
2769 struct xfs_buf *bp2;
2770 int error;
2771#ifdef DEBUG
2772 struct xfs_attr3_icleaf_hdr ichdr1;
2773 struct xfs_attr3_icleaf_hdr ichdr2;
2774 xfs_attr_leaf_name_local_t *name_loc;
2775 int namelen1, namelen2;
2776 char *name1, *name2;
2777#endif
2778
2779 trace_xfs_attr_leaf_flipflags(args);
2780
2781
2782
2783
2784 error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp1);
2785 if (error)
2786 return error;
2787
2788
2789
2790
2791 if (args->blkno2 != args->blkno) {
2792 error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno2,
2793 -1, &bp2);
2794 if (error)
2795 return error;
2796 } else {
2797 bp2 = bp1;
2798 }
2799
2800 leaf1 = bp1->b_addr;
2801 entry1 = &xfs_attr3_leaf_entryp(leaf1)[args->index];
2802
2803 leaf2 = bp2->b_addr;
2804 entry2 = &xfs_attr3_leaf_entryp(leaf2)[args->index2];
2805
2806#ifdef DEBUG
2807 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr1, leaf1);
2808 ASSERT(args->index < ichdr1.count);
2809 ASSERT(args->index >= 0);
2810
2811 xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr2, leaf2);
2812 ASSERT(args->index2 < ichdr2.count);
2813 ASSERT(args->index2 >= 0);
2814
2815 if (entry1->flags & XFS_ATTR_LOCAL) {
2816 name_loc = xfs_attr3_leaf_name_local(leaf1, args->index);
2817 namelen1 = name_loc->namelen;
2818 name1 = (char *)name_loc->nameval;
2819 } else {
2820 name_rmt = xfs_attr3_leaf_name_remote(leaf1, args->index);
2821 namelen1 = name_rmt->namelen;
2822 name1 = (char *)name_rmt->name;
2823 }
2824 if (entry2->flags & XFS_ATTR_LOCAL) {
2825 name_loc = xfs_attr3_leaf_name_local(leaf2, args->index2);
2826 namelen2 = name_loc->namelen;
2827 name2 = (char *)name_loc->nameval;
2828 } else {
2829 name_rmt = xfs_attr3_leaf_name_remote(leaf2, args->index2);
2830 namelen2 = name_rmt->namelen;
2831 name2 = (char *)name_rmt->name;
2832 }
2833 ASSERT(be32_to_cpu(entry1->hashval) == be32_to_cpu(entry2->hashval));
2834 ASSERT(namelen1 == namelen2);
2835 ASSERT(memcmp(name1, name2, namelen1) == 0);
2836#endif
2837
2838 ASSERT(entry1->flags & XFS_ATTR_INCOMPLETE);
2839 ASSERT((entry2->flags & XFS_ATTR_INCOMPLETE) == 0);
2840
2841 entry1->flags &= ~XFS_ATTR_INCOMPLETE;
2842 xfs_trans_log_buf(args->trans, bp1,
2843 XFS_DA_LOGRANGE(leaf1, entry1, sizeof(*entry1)));
2844 if (args->rmtblkno) {
2845 ASSERT((entry1->flags & XFS_ATTR_LOCAL) == 0);
2846 name_rmt = xfs_attr3_leaf_name_remote(leaf1, args->index);
2847 name_rmt->valueblk = cpu_to_be32(args->rmtblkno);
2848 name_rmt->valuelen = cpu_to_be32(args->rmtvaluelen);
2849 xfs_trans_log_buf(args->trans, bp1,
2850 XFS_DA_LOGRANGE(leaf1, name_rmt, sizeof(*name_rmt)));
2851 }
2852
2853 entry2->flags |= XFS_ATTR_INCOMPLETE;
2854 xfs_trans_log_buf(args->trans, bp2,
2855 XFS_DA_LOGRANGE(leaf2, entry2, sizeof(*entry2)));
2856 if ((entry2->flags & XFS_ATTR_LOCAL) == 0) {
2857 name_rmt = xfs_attr3_leaf_name_remote(leaf2, args->index2);
2858 name_rmt->valueblk = 0;
2859 name_rmt->valuelen = 0;
2860 xfs_trans_log_buf(args->trans, bp2,
2861 XFS_DA_LOGRANGE(leaf2, name_rmt, sizeof(*name_rmt)));
2862 }
2863
2864
2865
2866
2867 error = xfs_trans_roll_inode(&args->trans, args->dp);
2868
2869 return error;
2870}
2871