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19#include "xfs.h"
20#include "xfs_fs.h"
21#include "xfs_types.h"
22#include "xfs_bit.h"
23#include "xfs_log.h"
24#include "xfs_trans.h"
25#include "xfs_sb.h"
26#include "xfs_ag.h"
27#include "xfs_mount.h"
28#include "xfs_da_btree.h"
29#include "xfs_bmap_btree.h"
30#include "xfs_alloc_btree.h"
31#include "xfs_ialloc_btree.h"
32#include "xfs_alloc.h"
33#include "xfs_btree.h"
34#include "xfs_attr_sf.h"
35#include "xfs_attr_remote.h"
36#include "xfs_dinode.h"
37#include "xfs_inode.h"
38#include "xfs_inode_item.h"
39#include "xfs_bmap.h"
40#include "xfs_attr.h"
41#include "xfs_attr_leaf.h"
42#include "xfs_error.h"
43#include "xfs_trace.h"
44#include "xfs_buf_item.h"
45#include "xfs_cksum.h"
46
47
48
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60
61STATIC int xfs_attr3_leaf_create(struct xfs_da_args *args,
62 xfs_dablk_t which_block, struct xfs_buf **bpp);
63STATIC int xfs_attr3_leaf_add_work(struct xfs_buf *leaf_buffer,
64 struct xfs_attr3_icleaf_hdr *ichdr,
65 struct xfs_da_args *args, int freemap_index);
66STATIC void xfs_attr3_leaf_compact(struct xfs_da_args *args,
67 struct xfs_attr3_icleaf_hdr *ichdr,
68 struct xfs_buf *leaf_buffer);
69STATIC void xfs_attr3_leaf_rebalance(xfs_da_state_t *state,
70 xfs_da_state_blk_t *blk1,
71 xfs_da_state_blk_t *blk2);
72STATIC int xfs_attr3_leaf_figure_balance(xfs_da_state_t *state,
73 xfs_da_state_blk_t *leaf_blk_1,
74 struct xfs_attr3_icleaf_hdr *ichdr1,
75 xfs_da_state_blk_t *leaf_blk_2,
76 struct xfs_attr3_icleaf_hdr *ichdr2,
77 int *number_entries_in_blk1,
78 int *number_usedbytes_in_blk1);
79
80
81
82
83STATIC int xfs_attr3_node_inactive(xfs_trans_t **trans, xfs_inode_t *dp,
84 struct xfs_buf *bp, int level);
85STATIC int xfs_attr3_leaf_inactive(xfs_trans_t **trans, xfs_inode_t *dp,
86 struct xfs_buf *bp);
87STATIC int xfs_attr3_leaf_freextent(xfs_trans_t **trans, xfs_inode_t *dp,
88 xfs_dablk_t blkno, int blkcnt);
89
90
91
92
93STATIC void xfs_attr3_leaf_moveents(struct xfs_attr_leafblock *src_leaf,
94 struct xfs_attr3_icleaf_hdr *src_ichdr, int src_start,
95 struct xfs_attr_leafblock *dst_leaf,
96 struct xfs_attr3_icleaf_hdr *dst_ichdr, int dst_start,
97 int move_count, struct xfs_mount *mp);
98STATIC int xfs_attr_leaf_entsize(xfs_attr_leafblock_t *leaf, int index);
99
100void
101xfs_attr3_leaf_hdr_from_disk(
102 struct xfs_attr3_icleaf_hdr *to,
103 struct xfs_attr_leafblock *from)
104{
105 int i;
106
107 ASSERT(from->hdr.info.magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC) ||
108 from->hdr.info.magic == cpu_to_be16(XFS_ATTR3_LEAF_MAGIC));
109
110 if (from->hdr.info.magic == cpu_to_be16(XFS_ATTR3_LEAF_MAGIC)) {
111 struct xfs_attr3_leaf_hdr *hdr3 = (struct xfs_attr3_leaf_hdr *)from;
112
113 to->forw = be32_to_cpu(hdr3->info.hdr.forw);
114 to->back = be32_to_cpu(hdr3->info.hdr.back);
115 to->magic = be16_to_cpu(hdr3->info.hdr.magic);
116 to->count = be16_to_cpu(hdr3->count);
117 to->usedbytes = be16_to_cpu(hdr3->usedbytes);
118 to->firstused = be16_to_cpu(hdr3->firstused);
119 to->holes = hdr3->holes;
120
121 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
122 to->freemap[i].base = be16_to_cpu(hdr3->freemap[i].base);
123 to->freemap[i].size = be16_to_cpu(hdr3->freemap[i].size);
124 }
125 return;
126 }
127 to->forw = be32_to_cpu(from->hdr.info.forw);
128 to->back = be32_to_cpu(from->hdr.info.back);
129 to->magic = be16_to_cpu(from->hdr.info.magic);
130 to->count = be16_to_cpu(from->hdr.count);
131 to->usedbytes = be16_to_cpu(from->hdr.usedbytes);
132 to->firstused = be16_to_cpu(from->hdr.firstused);
133 to->holes = from->hdr.holes;
134
135 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
136 to->freemap[i].base = be16_to_cpu(from->hdr.freemap[i].base);
137 to->freemap[i].size = be16_to_cpu(from->hdr.freemap[i].size);
138 }
139}
140
141void
142xfs_attr3_leaf_hdr_to_disk(
143 struct xfs_attr_leafblock *to,
144 struct xfs_attr3_icleaf_hdr *from)
145{
146 int i;
147
148 ASSERT(from->magic == XFS_ATTR_LEAF_MAGIC ||
149 from->magic == XFS_ATTR3_LEAF_MAGIC);
150
151 if (from->magic == XFS_ATTR3_LEAF_MAGIC) {
152 struct xfs_attr3_leaf_hdr *hdr3 = (struct xfs_attr3_leaf_hdr *)to;
153
154 hdr3->info.hdr.forw = cpu_to_be32(from->forw);
155 hdr3->info.hdr.back = cpu_to_be32(from->back);
156 hdr3->info.hdr.magic = cpu_to_be16(from->magic);
157 hdr3->count = cpu_to_be16(from->count);
158 hdr3->usedbytes = cpu_to_be16(from->usedbytes);
159 hdr3->firstused = cpu_to_be16(from->firstused);
160 hdr3->holes = from->holes;
161 hdr3->pad1 = 0;
162
163 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
164 hdr3->freemap[i].base = cpu_to_be16(from->freemap[i].base);
165 hdr3->freemap[i].size = cpu_to_be16(from->freemap[i].size);
166 }
167 return;
168 }
169 to->hdr.info.forw = cpu_to_be32(from->forw);
170 to->hdr.info.back = cpu_to_be32(from->back);
171 to->hdr.info.magic = cpu_to_be16(from->magic);
172 to->hdr.count = cpu_to_be16(from->count);
173 to->hdr.usedbytes = cpu_to_be16(from->usedbytes);
174 to->hdr.firstused = cpu_to_be16(from->firstused);
175 to->hdr.holes = from->holes;
176 to->hdr.pad1 = 0;
177
178 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
179 to->hdr.freemap[i].base = cpu_to_be16(from->freemap[i].base);
180 to->hdr.freemap[i].size = cpu_to_be16(from->freemap[i].size);
181 }
182}
183
184static bool
185xfs_attr3_leaf_verify(
186 struct xfs_buf *bp)
187{
188 struct xfs_mount *mp = bp->b_target->bt_mount;
189 struct xfs_attr_leafblock *leaf = bp->b_addr;
190 struct xfs_attr3_icleaf_hdr ichdr;
191
192 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
193
194 if (xfs_sb_version_hascrc(&mp->m_sb)) {
195 struct xfs_da3_node_hdr *hdr3 = bp->b_addr;
196
197 if (ichdr.magic != XFS_ATTR3_LEAF_MAGIC)
198 return false;
199
200 if (!uuid_equal(&hdr3->info.uuid, &mp->m_sb.sb_uuid))
201 return false;
202 if (be64_to_cpu(hdr3->info.blkno) != bp->b_bn)
203 return false;
204 } else {
205 if (ichdr.magic != XFS_ATTR_LEAF_MAGIC)
206 return false;
207 }
208 if (ichdr.count == 0)
209 return false;
210
211
212
213
214 return true;
215}
216
217static void
218xfs_attr3_leaf_write_verify(
219 struct xfs_buf *bp)
220{
221 struct xfs_mount *mp = bp->b_target->bt_mount;
222 struct xfs_buf_log_item *bip = bp->b_fspriv;
223 struct xfs_attr3_leaf_hdr *hdr3 = bp->b_addr;
224
225 if (!xfs_attr3_leaf_verify(bp)) {
226 XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr);
227 xfs_buf_ioerror(bp, EFSCORRUPTED);
228 return;
229 }
230
231 if (!xfs_sb_version_hascrc(&mp->m_sb))
232 return;
233
234 if (bip)
235 hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
236
237 xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_ATTR3_LEAF_CRC_OFF);
238}
239
240
241
242
243
244
245
246static void
247xfs_attr3_leaf_read_verify(
248 struct xfs_buf *bp)
249{
250 struct xfs_mount *mp = bp->b_target->bt_mount;
251
252 if ((xfs_sb_version_hascrc(&mp->m_sb) &&
253 !xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length),
254 XFS_ATTR3_LEAF_CRC_OFF)) ||
255 !xfs_attr3_leaf_verify(bp)) {
256 XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr);
257 xfs_buf_ioerror(bp, EFSCORRUPTED);
258 }
259}
260
261const struct xfs_buf_ops xfs_attr3_leaf_buf_ops = {
262 .verify_read = xfs_attr3_leaf_read_verify,
263 .verify_write = xfs_attr3_leaf_write_verify,
264};
265
266int
267xfs_attr3_leaf_read(
268 struct xfs_trans *tp,
269 struct xfs_inode *dp,
270 xfs_dablk_t bno,
271 xfs_daddr_t mappedbno,
272 struct xfs_buf **bpp)
273{
274 int err;
275
276 err = xfs_da_read_buf(tp, dp, bno, mappedbno, bpp,
277 XFS_ATTR_FORK, &xfs_attr3_leaf_buf_ops);
278 if (!err && tp)
279 xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_ATTR_LEAF_BUF);
280 return err;
281}
282
283
284
285
286
287
288
289
290
291STATIC int
292xfs_attr_namesp_match(int arg_flags, int ondisk_flags)
293{
294 return XFS_ATTR_NSP_ONDISK(ondisk_flags) == XFS_ATTR_NSP_ARGS_TO_ONDISK(arg_flags);
295}
296
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308
309
310
311
312int
313xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes)
314{
315 int offset;
316 int minforkoff;
317 int maxforkoff;
318 int dsize;
319 xfs_mount_t *mp = dp->i_mount;
320
321
322 offset = (XFS_LITINO(mp, dp->i_d.di_version) - bytes) >> 3;
323
324 switch (dp->i_d.di_format) {
325 case XFS_DINODE_FMT_DEV:
326 minforkoff = roundup(sizeof(xfs_dev_t), 8) >> 3;
327 return (offset >= minforkoff) ? minforkoff : 0;
328 case XFS_DINODE_FMT_UUID:
329 minforkoff = roundup(sizeof(uuid_t), 8) >> 3;
330 return (offset >= minforkoff) ? minforkoff : 0;
331 }
332
333
334
335
336
337
338
339
340
341
342
343 if (bytes <= XFS_IFORK_ASIZE(dp))
344 return dp->i_d.di_forkoff;
345
346
347
348
349
350
351 if (!(mp->m_flags & XFS_MOUNT_ATTR2))
352 return 0;
353
354 dsize = dp->i_df.if_bytes;
355
356 switch (dp->i_d.di_format) {
357 case XFS_DINODE_FMT_EXTENTS:
358
359
360
361
362
363
364
365 if (!dp->i_d.di_forkoff && dp->i_df.if_bytes >
366 xfs_default_attroffset(dp))
367 dsize = XFS_BMDR_SPACE_CALC(MINDBTPTRS);
368 break;
369 case XFS_DINODE_FMT_BTREE:
370
371
372
373
374
375
376 if (dp->i_d.di_forkoff) {
377 if (offset < dp->i_d.di_forkoff)
378 return 0;
379 return dp->i_d.di_forkoff;
380 }
381 dsize = XFS_BMAP_BROOT_SPACE(mp, dp->i_df.if_broot);
382 break;
383 }
384
385
386
387
388
389 minforkoff = MAX(dsize, XFS_BMDR_SPACE_CALC(MINDBTPTRS));
390 minforkoff = roundup(minforkoff, 8) >> 3;
391
392
393 maxforkoff = XFS_LITINO(mp, dp->i_d.di_version) -
394 XFS_BMDR_SPACE_CALC(MINABTPTRS);
395 maxforkoff = maxforkoff >> 3;
396
397 if (offset >= maxforkoff)
398 return maxforkoff;
399 if (offset >= minforkoff)
400 return offset;
401 return 0;
402}
403
404
405
406
407STATIC void
408xfs_sbversion_add_attr2(xfs_mount_t *mp, xfs_trans_t *tp)
409{
410 if ((mp->m_flags & XFS_MOUNT_ATTR2) &&
411 !(xfs_sb_version_hasattr2(&mp->m_sb))) {
412 spin_lock(&mp->m_sb_lock);
413 if (!xfs_sb_version_hasattr2(&mp->m_sb)) {
414 xfs_sb_version_addattr2(&mp->m_sb);
415 spin_unlock(&mp->m_sb_lock);
416 xfs_mod_sb(tp, XFS_SB_VERSIONNUM | XFS_SB_FEATURES2);
417 } else
418 spin_unlock(&mp->m_sb_lock);
419 }
420}
421
422
423
424
425void
426xfs_attr_shortform_create(xfs_da_args_t *args)
427{
428 xfs_attr_sf_hdr_t *hdr;
429 xfs_inode_t *dp;
430 xfs_ifork_t *ifp;
431
432 trace_xfs_attr_sf_create(args);
433
434 dp = args->dp;
435 ASSERT(dp != NULL);
436 ifp = dp->i_afp;
437 ASSERT(ifp != NULL);
438 ASSERT(ifp->if_bytes == 0);
439 if (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS) {
440 ifp->if_flags &= ~XFS_IFEXTENTS;
441 dp->i_d.di_aformat = XFS_DINODE_FMT_LOCAL;
442 ifp->if_flags |= XFS_IFINLINE;
443 } else {
444 ASSERT(ifp->if_flags & XFS_IFINLINE);
445 }
446 xfs_idata_realloc(dp, sizeof(*hdr), XFS_ATTR_FORK);
447 hdr = (xfs_attr_sf_hdr_t *)ifp->if_u1.if_data;
448 hdr->count = 0;
449 hdr->totsize = cpu_to_be16(sizeof(*hdr));
450 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
451}
452
453
454
455
456
457void
458xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff)
459{
460 xfs_attr_shortform_t *sf;
461 xfs_attr_sf_entry_t *sfe;
462 int i, offset, size;
463 xfs_mount_t *mp;
464 xfs_inode_t *dp;
465 xfs_ifork_t *ifp;
466
467 trace_xfs_attr_sf_add(args);
468
469 dp = args->dp;
470 mp = dp->i_mount;
471 dp->i_d.di_forkoff = forkoff;
472
473 ifp = dp->i_afp;
474 ASSERT(ifp->if_flags & XFS_IFINLINE);
475 sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
476 sfe = &sf->list[0];
477 for (i = 0; i < sf->hdr.count; sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
478#ifdef DEBUG
479 if (sfe->namelen != args->namelen)
480 continue;
481 if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
482 continue;
483 if (!xfs_attr_namesp_match(args->flags, sfe->flags))
484 continue;
485 ASSERT(0);
486#endif
487 }
488
489 offset = (char *)sfe - (char *)sf;
490 size = XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
491 xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
492 sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
493 sfe = (xfs_attr_sf_entry_t *)((char *)sf + offset);
494
495 sfe->namelen = args->namelen;
496 sfe->valuelen = args->valuelen;
497 sfe->flags = XFS_ATTR_NSP_ARGS_TO_ONDISK(args->flags);
498 memcpy(sfe->nameval, args->name, args->namelen);
499 memcpy(&sfe->nameval[args->namelen], args->value, args->valuelen);
500 sf->hdr.count++;
501 be16_add_cpu(&sf->hdr.totsize, size);
502 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
503
504 xfs_sbversion_add_attr2(mp, args->trans);
505}
506
507
508
509
510
511STATIC void
512xfs_attr_fork_reset(
513 struct xfs_inode *ip,
514 struct xfs_trans *tp)
515{
516 xfs_idestroy_fork(ip, XFS_ATTR_FORK);
517 ip->i_d.di_forkoff = 0;
518 ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
519
520 ASSERT(ip->i_d.di_anextents == 0);
521 ASSERT(ip->i_afp == NULL);
522
523 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
524}
525
526
527
528
529int
530xfs_attr_shortform_remove(xfs_da_args_t *args)
531{
532 xfs_attr_shortform_t *sf;
533 xfs_attr_sf_entry_t *sfe;
534 int base, size=0, end, totsize, i;
535 xfs_mount_t *mp;
536 xfs_inode_t *dp;
537
538 trace_xfs_attr_sf_remove(args);
539
540 dp = args->dp;
541 mp = dp->i_mount;
542 base = sizeof(xfs_attr_sf_hdr_t);
543 sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data;
544 sfe = &sf->list[0];
545 end = sf->hdr.count;
546 for (i = 0; i < end; sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
547 base += size, i++) {
548 size = XFS_ATTR_SF_ENTSIZE(sfe);
549 if (sfe->namelen != args->namelen)
550 continue;
551 if (memcmp(sfe->nameval, args->name, args->namelen) != 0)
552 continue;
553 if (!xfs_attr_namesp_match(args->flags, sfe->flags))
554 continue;
555 break;
556 }
557 if (i == end)
558 return(XFS_ERROR(ENOATTR));
559
560
561
562
563 end = base + size;
564 totsize = be16_to_cpu(sf->hdr.totsize);
565 if (end != totsize)
566 memmove(&((char *)sf)[base], &((char *)sf)[end], totsize - end);
567 sf->hdr.count--;
568 be16_add_cpu(&sf->hdr.totsize, -size);
569
570
571
572
573 totsize -= size;
574 if (totsize == sizeof(xfs_attr_sf_hdr_t) &&
575 (mp->m_flags & XFS_MOUNT_ATTR2) &&
576 (dp->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
577 !(args->op_flags & XFS_DA_OP_ADDNAME)) {
578 xfs_attr_fork_reset(dp, args->trans);
579 } else {
580 xfs_idata_realloc(dp, -size, XFS_ATTR_FORK);
581 dp->i_d.di_forkoff = xfs_attr_shortform_bytesfit(dp, totsize);
582 ASSERT(dp->i_d.di_forkoff);
583 ASSERT(totsize > sizeof(xfs_attr_sf_hdr_t) ||
584 (args->op_flags & XFS_DA_OP_ADDNAME) ||
585 !(mp->m_flags & XFS_MOUNT_ATTR2) ||
586 dp->i_d.di_format == XFS_DINODE_FMT_BTREE);
587 xfs_trans_log_inode(args->trans, dp,
588 XFS_ILOG_CORE | XFS_ILOG_ADATA);
589 }
590
591 xfs_sbversion_add_attr2(mp, args->trans);
592
593 return(0);
594}
595
596
597
598
599
600int
601xfs_attr_shortform_lookup(xfs_da_args_t *args)
602{
603 xfs_attr_shortform_t *sf;
604 xfs_attr_sf_entry_t *sfe;
605 int i;
606 xfs_ifork_t *ifp;
607
608 trace_xfs_attr_sf_lookup(args);
609
610 ifp = args->dp->i_afp;
611 ASSERT(ifp->if_flags & XFS_IFINLINE);
612 sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
613 sfe = &sf->list[0];
614 for (i = 0; i < sf->hdr.count;
615 sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
616 if (sfe->namelen != args->namelen)
617 continue;
618 if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
619 continue;
620 if (!xfs_attr_namesp_match(args->flags, sfe->flags))
621 continue;
622 return(XFS_ERROR(EEXIST));
623 }
624 return(XFS_ERROR(ENOATTR));
625}
626
627
628
629
630
631int
632xfs_attr_shortform_getvalue(xfs_da_args_t *args)
633{
634 xfs_attr_shortform_t *sf;
635 xfs_attr_sf_entry_t *sfe;
636 int i;
637
638 ASSERT(args->dp->i_d.di_aformat == XFS_IFINLINE);
639 sf = (xfs_attr_shortform_t *)args->dp->i_afp->if_u1.if_data;
640 sfe = &sf->list[0];
641 for (i = 0; i < sf->hdr.count;
642 sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
643 if (sfe->namelen != args->namelen)
644 continue;
645 if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
646 continue;
647 if (!xfs_attr_namesp_match(args->flags, sfe->flags))
648 continue;
649 if (args->flags & ATTR_KERNOVAL) {
650 args->valuelen = sfe->valuelen;
651 return(XFS_ERROR(EEXIST));
652 }
653 if (args->valuelen < sfe->valuelen) {
654 args->valuelen = sfe->valuelen;
655 return(XFS_ERROR(ERANGE));
656 }
657 args->valuelen = sfe->valuelen;
658 memcpy(args->value, &sfe->nameval[args->namelen],
659 args->valuelen);
660 return(XFS_ERROR(EEXIST));
661 }
662 return(XFS_ERROR(ENOATTR));
663}
664
665
666
667
668int
669xfs_attr_shortform_to_leaf(xfs_da_args_t *args)
670{
671 xfs_inode_t *dp;
672 xfs_attr_shortform_t *sf;
673 xfs_attr_sf_entry_t *sfe;
674 xfs_da_args_t nargs;
675 char *tmpbuffer;
676 int error, i, size;
677 xfs_dablk_t blkno;
678 struct xfs_buf *bp;
679 xfs_ifork_t *ifp;
680
681 trace_xfs_attr_sf_to_leaf(args);
682
683 dp = args->dp;
684 ifp = dp->i_afp;
685 sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
686 size = be16_to_cpu(sf->hdr.totsize);
687 tmpbuffer = kmem_alloc(size, KM_SLEEP);
688 ASSERT(tmpbuffer != NULL);
689 memcpy(tmpbuffer, ifp->if_u1.if_data, size);
690 sf = (xfs_attr_shortform_t *)tmpbuffer;
691
692 xfs_idata_realloc(dp, -size, XFS_ATTR_FORK);
693 bp = NULL;
694 error = xfs_da_grow_inode(args, &blkno);
695 if (error) {
696
697
698
699
700 if (error == EIO)
701 goto out;
702 xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
703 memcpy(ifp->if_u1.if_data, tmpbuffer, size);
704 goto out;
705 }
706
707 ASSERT(blkno == 0);
708 error = xfs_attr3_leaf_create(args, blkno, &bp);
709 if (error) {
710 error = xfs_da_shrink_inode(args, 0, bp);
711 bp = NULL;
712 if (error)
713 goto out;
714 xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
715 memcpy(ifp->if_u1.if_data, tmpbuffer, size);
716 goto out;
717 }
718
719 memset((char *)&nargs, 0, sizeof(nargs));
720 nargs.dp = dp;
721 nargs.firstblock = args->firstblock;
722 nargs.flist = args->flist;
723 nargs.total = args->total;
724 nargs.whichfork = XFS_ATTR_FORK;
725 nargs.trans = args->trans;
726 nargs.op_flags = XFS_DA_OP_OKNOENT;
727
728 sfe = &sf->list[0];
729 for (i = 0; i < sf->hdr.count; i++) {
730 nargs.name = sfe->nameval;
731 nargs.namelen = sfe->namelen;
732 nargs.value = &sfe->nameval[nargs.namelen];
733 nargs.valuelen = sfe->valuelen;
734 nargs.hashval = xfs_da_hashname(sfe->nameval,
735 sfe->namelen);
736 nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(sfe->flags);
737 error = xfs_attr3_leaf_lookup_int(bp, &nargs);
738 ASSERT(error == ENOATTR);
739 error = xfs_attr3_leaf_add(bp, &nargs);
740 ASSERT(error != ENOSPC);
741 if (error)
742 goto out;
743 sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
744 }
745 error = 0;
746
747out:
748 kmem_free(tmpbuffer);
749 return(error);
750}
751
752STATIC int
753xfs_attr_shortform_compare(const void *a, const void *b)
754{
755 xfs_attr_sf_sort_t *sa, *sb;
756
757 sa = (xfs_attr_sf_sort_t *)a;
758 sb = (xfs_attr_sf_sort_t *)b;
759 if (sa->hash < sb->hash) {
760 return(-1);
761 } else if (sa->hash > sb->hash) {
762 return(1);
763 } else {
764 return(sa->entno - sb->entno);
765 }
766}
767
768
769#define XFS_ISRESET_CURSOR(cursor) \
770 (!((cursor)->initted) && !((cursor)->hashval) && \
771 !((cursor)->blkno) && !((cursor)->offset))
772
773
774
775
776
777
778
779
780int
781xfs_attr_shortform_list(xfs_attr_list_context_t *context)
782{
783 attrlist_cursor_kern_t *cursor;
784 xfs_attr_sf_sort_t *sbuf, *sbp;
785 xfs_attr_shortform_t *sf;
786 xfs_attr_sf_entry_t *sfe;
787 xfs_inode_t *dp;
788 int sbsize, nsbuf, count, i;
789 int error;
790
791 ASSERT(context != NULL);
792 dp = context->dp;
793 ASSERT(dp != NULL);
794 ASSERT(dp->i_afp != NULL);
795 sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data;
796 ASSERT(sf != NULL);
797 if (!sf->hdr.count)
798 return(0);
799 cursor = context->cursor;
800 ASSERT(cursor != NULL);
801
802 trace_xfs_attr_list_sf(context);
803
804
805
806
807
808
809
810
811
812
813 if (context->bufsize == 0 ||
814 (XFS_ISRESET_CURSOR(cursor) &&
815 (dp->i_afp->if_bytes + sf->hdr.count * 16) < context->bufsize)) {
816 for (i = 0, sfe = &sf->list[0]; i < sf->hdr.count; i++) {
817 error = context->put_listent(context,
818 sfe->flags,
819 sfe->nameval,
820 (int)sfe->namelen,
821 (int)sfe->valuelen,
822 &sfe->nameval[sfe->namelen]);
823
824
825
826
827
828 if (context->seen_enough)
829 break;
830
831 if (error)
832 return error;
833 sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
834 }
835 trace_xfs_attr_list_sf_all(context);
836 return(0);
837 }
838
839
840 if (context->bufsize == 0)
841 return 0;
842
843
844
845
846 sbsize = sf->hdr.count * sizeof(*sbuf);
847 sbp = sbuf = kmem_alloc(sbsize, KM_SLEEP | KM_NOFS);
848
849
850
851
852
853 nsbuf = 0;
854 for (i = 0, sfe = &sf->list[0]; i < sf->hdr.count; i++) {
855 if (unlikely(
856 ((char *)sfe < (char *)sf) ||
857 ((char *)sfe >= ((char *)sf + dp->i_afp->if_bytes)))) {
858 XFS_CORRUPTION_ERROR("xfs_attr_shortform_list",
859 XFS_ERRLEVEL_LOW,
860 context->dp->i_mount, sfe);
861 kmem_free(sbuf);
862 return XFS_ERROR(EFSCORRUPTED);
863 }
864
865 sbp->entno = i;
866 sbp->hash = xfs_da_hashname(sfe->nameval, sfe->namelen);
867 sbp->name = sfe->nameval;
868 sbp->namelen = sfe->namelen;
869
870 sbp->valuelen = sfe->valuelen;
871 sbp->flags = sfe->flags;
872 sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
873 sbp++;
874 nsbuf++;
875 }
876
877
878
879
880 xfs_sort(sbuf, nsbuf, sizeof(*sbuf), xfs_attr_shortform_compare);
881
882
883
884
885 count = 0;
886 cursor->initted = 1;
887 cursor->blkno = 0;
888 for (sbp = sbuf, i = 0; i < nsbuf; i++, sbp++) {
889 if (sbp->hash == cursor->hashval) {
890 if (cursor->offset == count) {
891 break;
892 }
893 count++;
894 } else if (sbp->hash > cursor->hashval) {
895 break;
896 }
897 }
898 if (i == nsbuf) {
899 kmem_free(sbuf);
900 return(0);
901 }
902
903
904
905
906 for ( ; i < nsbuf; i++, sbp++) {
907 if (cursor->hashval != sbp->hash) {
908 cursor->hashval = sbp->hash;
909 cursor->offset = 0;
910 }
911 error = context->put_listent(context,
912 sbp->flags,
913 sbp->name,
914 sbp->namelen,
915 sbp->valuelen,
916 &sbp->name[sbp->namelen]);
917 if (error)
918 return error;
919 if (context->seen_enough)
920 break;
921 cursor->offset++;
922 }
923
924 kmem_free(sbuf);
925 return(0);
926}
927
928
929
930
931
932int
933xfs_attr_shortform_allfit(
934 struct xfs_buf *bp,
935 struct xfs_inode *dp)
936{
937 struct xfs_attr_leafblock *leaf;
938 struct xfs_attr_leaf_entry *entry;
939 xfs_attr_leaf_name_local_t *name_loc;
940 struct xfs_attr3_icleaf_hdr leafhdr;
941 int bytes;
942 int i;
943
944 leaf = bp->b_addr;
945 xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf);
946 entry = xfs_attr3_leaf_entryp(leaf);
947
948 bytes = sizeof(struct xfs_attr_sf_hdr);
949 for (i = 0; i < leafhdr.count; entry++, i++) {
950 if (entry->flags & XFS_ATTR_INCOMPLETE)
951 continue;
952 if (!(entry->flags & XFS_ATTR_LOCAL))
953 return(0);
954 name_loc = xfs_attr3_leaf_name_local(leaf, i);
955 if (name_loc->namelen >= XFS_ATTR_SF_ENTSIZE_MAX)
956 return(0);
957 if (be16_to_cpu(name_loc->valuelen) >= XFS_ATTR_SF_ENTSIZE_MAX)
958 return(0);
959 bytes += sizeof(struct xfs_attr_sf_entry) - 1
960 + name_loc->namelen
961 + be16_to_cpu(name_loc->valuelen);
962 }
963 if ((dp->i_mount->m_flags & XFS_MOUNT_ATTR2) &&
964 (dp->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
965 (bytes == sizeof(struct xfs_attr_sf_hdr)))
966 return -1;
967 return xfs_attr_shortform_bytesfit(dp, bytes);
968}
969
970
971
972
973int
974xfs_attr3_leaf_to_shortform(
975 struct xfs_buf *bp,
976 struct xfs_da_args *args,
977 int forkoff)
978{
979 struct xfs_attr_leafblock *leaf;
980 struct xfs_attr3_icleaf_hdr ichdr;
981 struct xfs_attr_leaf_entry *entry;
982 struct xfs_attr_leaf_name_local *name_loc;
983 struct xfs_da_args nargs;
984 struct xfs_inode *dp = args->dp;
985 char *tmpbuffer;
986 int error;
987 int i;
988
989 trace_xfs_attr_leaf_to_sf(args);
990
991 tmpbuffer = kmem_alloc(XFS_LBSIZE(dp->i_mount), KM_SLEEP);
992 if (!tmpbuffer)
993 return ENOMEM;
994
995 memcpy(tmpbuffer, bp->b_addr, XFS_LBSIZE(dp->i_mount));
996
997 leaf = (xfs_attr_leafblock_t *)tmpbuffer;
998 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
999 entry = xfs_attr3_leaf_entryp(leaf);
1000
1001
1002 memset(bp->b_addr, 0, XFS_LBSIZE(dp->i_mount));
1003
1004
1005
1006
1007 error = xfs_da_shrink_inode(args, 0, bp);
1008 if (error)
1009 goto out;
1010
1011 if (forkoff == -1) {
1012 ASSERT(dp->i_mount->m_flags & XFS_MOUNT_ATTR2);
1013 ASSERT(dp->i_d.di_format != XFS_DINODE_FMT_BTREE);
1014 xfs_attr_fork_reset(dp, args->trans);
1015 goto out;
1016 }
1017
1018 xfs_attr_shortform_create(args);
1019
1020
1021
1022
1023 memset((char *)&nargs, 0, sizeof(nargs));
1024 nargs.dp = dp;
1025 nargs.firstblock = args->firstblock;
1026 nargs.flist = args->flist;
1027 nargs.total = args->total;
1028 nargs.whichfork = XFS_ATTR_FORK;
1029 nargs.trans = args->trans;
1030 nargs.op_flags = XFS_DA_OP_OKNOENT;
1031
1032 for (i = 0; i < ichdr.count; entry++, i++) {
1033 if (entry->flags & XFS_ATTR_INCOMPLETE)
1034 continue;
1035 if (!entry->nameidx)
1036 continue;
1037 ASSERT(entry->flags & XFS_ATTR_LOCAL);
1038 name_loc = xfs_attr3_leaf_name_local(leaf, i);
1039 nargs.name = name_loc->nameval;
1040 nargs.namelen = name_loc->namelen;
1041 nargs.value = &name_loc->nameval[nargs.namelen];
1042 nargs.valuelen = be16_to_cpu(name_loc->valuelen);
1043 nargs.hashval = be32_to_cpu(entry->hashval);
1044 nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(entry->flags);
1045 xfs_attr_shortform_add(&nargs, forkoff);
1046 }
1047 error = 0;
1048
1049out:
1050 kmem_free(tmpbuffer);
1051 return error;
1052}
1053
1054
1055
1056
1057int
1058xfs_attr3_leaf_to_node(
1059 struct xfs_da_args *args)
1060{
1061 struct xfs_attr_leafblock *leaf;
1062 struct xfs_attr3_icleaf_hdr icleafhdr;
1063 struct xfs_attr_leaf_entry *entries;
1064 struct xfs_da_node_entry *btree;
1065 struct xfs_da3_icnode_hdr icnodehdr;
1066 struct xfs_da_intnode *node;
1067 struct xfs_inode *dp = args->dp;
1068 struct xfs_mount *mp = dp->i_mount;
1069 struct xfs_buf *bp1 = NULL;
1070 struct xfs_buf *bp2 = NULL;
1071 xfs_dablk_t blkno;
1072 int error;
1073
1074 trace_xfs_attr_leaf_to_node(args);
1075
1076 error = xfs_da_grow_inode(args, &blkno);
1077 if (error)
1078 goto out;
1079 error = xfs_attr3_leaf_read(args->trans, dp, 0, -1, &bp1);
1080 if (error)
1081 goto out;
1082
1083 error = xfs_da_get_buf(args->trans, dp, blkno, -1, &bp2, XFS_ATTR_FORK);
1084 if (error)
1085 goto out;
1086
1087
1088 xfs_trans_buf_set_type(args->trans, bp2, XFS_BLFT_ATTR_LEAF_BUF);
1089 bp2->b_ops = bp1->b_ops;
1090 memcpy(bp2->b_addr, bp1->b_addr, XFS_LBSIZE(mp));
1091 if (xfs_sb_version_hascrc(&mp->m_sb)) {
1092 struct xfs_da3_blkinfo *hdr3 = bp2->b_addr;
1093 hdr3->blkno = cpu_to_be64(bp2->b_bn);
1094 }
1095 xfs_trans_log_buf(args->trans, bp2, 0, XFS_LBSIZE(mp) - 1);
1096
1097
1098
1099
1100 error = xfs_da3_node_create(args, 0, 1, &bp1, XFS_ATTR_FORK);
1101 if (error)
1102 goto out;
1103 node = bp1->b_addr;
1104 xfs_da3_node_hdr_from_disk(&icnodehdr, node);
1105 btree = xfs_da3_node_tree_p(node);
1106
1107 leaf = bp2->b_addr;
1108 xfs_attr3_leaf_hdr_from_disk(&icleafhdr, leaf);
1109 entries = xfs_attr3_leaf_entryp(leaf);
1110
1111
1112 btree[0].hashval = entries[icleafhdr.count - 1].hashval;
1113 btree[0].before = cpu_to_be32(blkno);
1114 icnodehdr.count = 1;
1115 xfs_da3_node_hdr_to_disk(node, &icnodehdr);
1116 xfs_trans_log_buf(args->trans, bp1, 0, XFS_LBSIZE(mp) - 1);
1117 error = 0;
1118out:
1119 return error;
1120}
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131STATIC int
1132xfs_attr3_leaf_create(
1133 struct xfs_da_args *args,
1134 xfs_dablk_t blkno,
1135 struct xfs_buf **bpp)
1136{
1137 struct xfs_attr_leafblock *leaf;
1138 struct xfs_attr3_icleaf_hdr ichdr;
1139 struct xfs_inode *dp = args->dp;
1140 struct xfs_mount *mp = dp->i_mount;
1141 struct xfs_buf *bp;
1142 int error;
1143
1144 trace_xfs_attr_leaf_create(args);
1145
1146 error = xfs_da_get_buf(args->trans, args->dp, blkno, -1, &bp,
1147 XFS_ATTR_FORK);
1148 if (error)
1149 return error;
1150 bp->b_ops = &xfs_attr3_leaf_buf_ops;
1151 xfs_trans_buf_set_type(args->trans, bp, XFS_BLFT_ATTR_LEAF_BUF);
1152 leaf = bp->b_addr;
1153 memset(leaf, 0, XFS_LBSIZE(mp));
1154
1155 memset(&ichdr, 0, sizeof(ichdr));
1156 ichdr.firstused = XFS_LBSIZE(mp);
1157
1158 if (xfs_sb_version_hascrc(&mp->m_sb)) {
1159 struct xfs_da3_blkinfo *hdr3 = bp->b_addr;
1160
1161 ichdr.magic = XFS_ATTR3_LEAF_MAGIC;
1162
1163 hdr3->blkno = cpu_to_be64(bp->b_bn);
1164 hdr3->owner = cpu_to_be64(dp->i_ino);
1165 uuid_copy(&hdr3->uuid, &mp->m_sb.sb_uuid);
1166
1167 ichdr.freemap[0].base = sizeof(struct xfs_attr3_leaf_hdr);
1168 } else {
1169 ichdr.magic = XFS_ATTR_LEAF_MAGIC;
1170 ichdr.freemap[0].base = sizeof(struct xfs_attr_leaf_hdr);
1171 }
1172 ichdr.freemap[0].size = ichdr.firstused - ichdr.freemap[0].base;
1173
1174 xfs_attr3_leaf_hdr_to_disk(leaf, &ichdr);
1175 xfs_trans_log_buf(args->trans, bp, 0, XFS_LBSIZE(mp) - 1);
1176
1177 *bpp = bp;
1178 return 0;
1179}
1180
1181
1182
1183
1184int
1185xfs_attr3_leaf_split(
1186 struct xfs_da_state *state,
1187 struct xfs_da_state_blk *oldblk,
1188 struct xfs_da_state_blk *newblk)
1189{
1190 xfs_dablk_t blkno;
1191 int error;
1192
1193 trace_xfs_attr_leaf_split(state->args);
1194
1195
1196
1197
1198 ASSERT(oldblk->magic == XFS_ATTR_LEAF_MAGIC);
1199 error = xfs_da_grow_inode(state->args, &blkno);
1200 if (error)
1201 return(error);
1202 error = xfs_attr3_leaf_create(state->args, blkno, &newblk->bp);
1203 if (error)
1204 return(error);
1205 newblk->blkno = blkno;
1206 newblk->magic = XFS_ATTR_LEAF_MAGIC;
1207
1208
1209
1210
1211
1212 xfs_attr3_leaf_rebalance(state, oldblk, newblk);
1213 error = xfs_da3_blk_link(state, oldblk, newblk);
1214 if (error)
1215 return(error);
1216
1217
1218
1219
1220
1221
1222
1223
1224 if (state->inleaf) {
1225 trace_xfs_attr_leaf_add_old(state->args);
1226 error = xfs_attr3_leaf_add(oldblk->bp, state->args);
1227 } else {
1228 trace_xfs_attr_leaf_add_new(state->args);
1229 error = xfs_attr3_leaf_add(newblk->bp, state->args);
1230 }
1231
1232
1233
1234
1235 oldblk->hashval = xfs_attr_leaf_lasthash(oldblk->bp, NULL);
1236 newblk->hashval = xfs_attr_leaf_lasthash(newblk->bp, NULL);
1237 return(error);
1238}
1239
1240
1241
1242
1243int
1244xfs_attr3_leaf_add(
1245 struct xfs_buf *bp,
1246 struct xfs_da_args *args)
1247{
1248 struct xfs_attr_leafblock *leaf;
1249 struct xfs_attr3_icleaf_hdr ichdr;
1250 int tablesize;
1251 int entsize;
1252 int sum;
1253 int tmp;
1254 int i;
1255
1256 trace_xfs_attr_leaf_add(args);
1257
1258 leaf = bp->b_addr;
1259 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
1260 ASSERT(args->index >= 0 && args->index <= ichdr.count);
1261 entsize = xfs_attr_leaf_newentsize(args->namelen, args->valuelen,
1262 args->trans->t_mountp->m_sb.sb_blocksize, NULL);
1263
1264
1265
1266
1267
1268 tablesize = (ichdr.count + 1) * sizeof(xfs_attr_leaf_entry_t)
1269 + xfs_attr3_leaf_hdr_size(leaf);
1270 for (sum = 0, i = XFS_ATTR_LEAF_MAPSIZE - 1; i >= 0; i--) {
1271 if (tablesize > ichdr.firstused) {
1272 sum += ichdr.freemap[i].size;
1273 continue;
1274 }
1275 if (!ichdr.freemap[i].size)
1276 continue;
1277 tmp = entsize;
1278 if (ichdr.freemap[i].base < ichdr.firstused)
1279 tmp += sizeof(xfs_attr_leaf_entry_t);
1280 if (ichdr.freemap[i].size >= tmp) {
1281 tmp = xfs_attr3_leaf_add_work(bp, &ichdr, args, i);
1282 goto out_log_hdr;
1283 }
1284 sum += ichdr.freemap[i].size;
1285 }
1286
1287
1288
1289
1290
1291
1292 if (!ichdr.holes && sum < entsize)
1293 return XFS_ERROR(ENOSPC);
1294
1295
1296
1297
1298
1299 xfs_attr3_leaf_compact(args, &ichdr, bp);
1300
1301
1302
1303
1304
1305 if (ichdr.freemap[0].size < (entsize + sizeof(xfs_attr_leaf_entry_t))) {
1306 tmp = ENOSPC;
1307 goto out_log_hdr;
1308 }
1309
1310 tmp = xfs_attr3_leaf_add_work(bp, &ichdr, args, 0);
1311
1312out_log_hdr:
1313 xfs_attr3_leaf_hdr_to_disk(leaf, &ichdr);
1314 xfs_trans_log_buf(args->trans, bp,
1315 XFS_DA_LOGRANGE(leaf, &leaf->hdr,
1316 xfs_attr3_leaf_hdr_size(leaf)));
1317 return tmp;
1318}
1319
1320
1321
1322
1323STATIC int
1324xfs_attr3_leaf_add_work(
1325 struct xfs_buf *bp,
1326 struct xfs_attr3_icleaf_hdr *ichdr,
1327 struct xfs_da_args *args,
1328 int mapindex)
1329{
1330 struct xfs_attr_leafblock *leaf;
1331 struct xfs_attr_leaf_entry *entry;
1332 struct xfs_attr_leaf_name_local *name_loc;
1333 struct xfs_attr_leaf_name_remote *name_rmt;
1334 struct xfs_mount *mp;
1335 int tmp;
1336 int i;
1337
1338 trace_xfs_attr_leaf_add_work(args);
1339
1340 leaf = bp->b_addr;
1341 ASSERT(mapindex >= 0 && mapindex < XFS_ATTR_LEAF_MAPSIZE);
1342 ASSERT(args->index >= 0 && args->index <= ichdr->count);
1343
1344
1345
1346
1347 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
1348 if (args->index < ichdr->count) {
1349 tmp = ichdr->count - args->index;
1350 tmp *= sizeof(xfs_attr_leaf_entry_t);
1351 memmove(entry + 1, entry, tmp);
1352 xfs_trans_log_buf(args->trans, bp,
1353 XFS_DA_LOGRANGE(leaf, entry, tmp + sizeof(*entry)));
1354 }
1355 ichdr->count++;
1356
1357
1358
1359
1360 mp = args->trans->t_mountp;
1361 ASSERT(ichdr->freemap[mapindex].base < XFS_LBSIZE(mp));
1362 ASSERT((ichdr->freemap[mapindex].base & 0x3) == 0);
1363 ASSERT(ichdr->freemap[mapindex].size >=
1364 xfs_attr_leaf_newentsize(args->namelen, args->valuelen,
1365 mp->m_sb.sb_blocksize, NULL));
1366 ASSERT(ichdr->freemap[mapindex].size < XFS_LBSIZE(mp));
1367 ASSERT((ichdr->freemap[mapindex].size & 0x3) == 0);
1368
1369 ichdr->freemap[mapindex].size -=
1370 xfs_attr_leaf_newentsize(args->namelen, args->valuelen,
1371 mp->m_sb.sb_blocksize, &tmp);
1372
1373 entry->nameidx = cpu_to_be16(ichdr->freemap[mapindex].base +
1374 ichdr->freemap[mapindex].size);
1375 entry->hashval = cpu_to_be32(args->hashval);
1376 entry->flags = tmp ? XFS_ATTR_LOCAL : 0;
1377 entry->flags |= XFS_ATTR_NSP_ARGS_TO_ONDISK(args->flags);
1378 if (args->op_flags & XFS_DA_OP_RENAME) {
1379 entry->flags |= XFS_ATTR_INCOMPLETE;
1380 if ((args->blkno2 == args->blkno) &&
1381 (args->index2 <= args->index)) {
1382 args->index2++;
1383 }
1384 }
1385 xfs_trans_log_buf(args->trans, bp,
1386 XFS_DA_LOGRANGE(leaf, entry, sizeof(*entry)));
1387 ASSERT((args->index == 0) ||
1388 (be32_to_cpu(entry->hashval) >= be32_to_cpu((entry-1)->hashval)));
1389 ASSERT((args->index == ichdr->count - 1) ||
1390 (be32_to_cpu(entry->hashval) <= be32_to_cpu((entry+1)->hashval)));
1391
1392
1393
1394
1395
1396
1397
1398
1399 if (entry->flags & XFS_ATTR_LOCAL) {
1400 name_loc = xfs_attr3_leaf_name_local(leaf, args->index);
1401 name_loc->namelen = args->namelen;
1402 name_loc->valuelen = cpu_to_be16(args->valuelen);
1403 memcpy((char *)name_loc->nameval, args->name, args->namelen);
1404 memcpy((char *)&name_loc->nameval[args->namelen], args->value,
1405 be16_to_cpu(name_loc->valuelen));
1406 } else {
1407 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
1408 name_rmt->namelen = args->namelen;
1409 memcpy((char *)name_rmt->name, args->name, args->namelen);
1410 entry->flags |= XFS_ATTR_INCOMPLETE;
1411
1412 name_rmt->valuelen = 0;
1413 name_rmt->valueblk = 0;
1414 args->rmtblkno = 1;
1415 args->rmtblkcnt = xfs_attr3_rmt_blocks(mp, args->valuelen);
1416 }
1417 xfs_trans_log_buf(args->trans, bp,
1418 XFS_DA_LOGRANGE(leaf, xfs_attr3_leaf_name(leaf, args->index),
1419 xfs_attr_leaf_entsize(leaf, args->index)));
1420
1421
1422
1423
1424 if (be16_to_cpu(entry->nameidx) < ichdr->firstused)
1425 ichdr->firstused = be16_to_cpu(entry->nameidx);
1426
1427 ASSERT(ichdr->firstused >= ichdr->count * sizeof(xfs_attr_leaf_entry_t)
1428 + xfs_attr3_leaf_hdr_size(leaf));
1429 tmp = (ichdr->count - 1) * sizeof(xfs_attr_leaf_entry_t)
1430 + xfs_attr3_leaf_hdr_size(leaf);
1431
1432 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
1433 if (ichdr->freemap[i].base == tmp) {
1434 ichdr->freemap[i].base += sizeof(xfs_attr_leaf_entry_t);
1435 ichdr->freemap[i].size -= sizeof(xfs_attr_leaf_entry_t);
1436 }
1437 }
1438 ichdr->usedbytes += xfs_attr_leaf_entsize(leaf, args->index);
1439 return 0;
1440}
1441
1442
1443
1444
1445STATIC void
1446xfs_attr3_leaf_compact(
1447 struct xfs_da_args *args,
1448 struct xfs_attr3_icleaf_hdr *ichdr_dst,
1449 struct xfs_buf *bp)
1450{
1451 struct xfs_attr_leafblock *leaf_src;
1452 struct xfs_attr_leafblock *leaf_dst;
1453 struct xfs_attr3_icleaf_hdr ichdr_src;
1454 struct xfs_trans *trans = args->trans;
1455 struct xfs_mount *mp = trans->t_mountp;
1456 char *tmpbuffer;
1457
1458 trace_xfs_attr_leaf_compact(args);
1459
1460 tmpbuffer = kmem_alloc(XFS_LBSIZE(mp), KM_SLEEP);
1461 memcpy(tmpbuffer, bp->b_addr, XFS_LBSIZE(mp));
1462 memset(bp->b_addr, 0, XFS_LBSIZE(mp));
1463 leaf_src = (xfs_attr_leafblock_t *)tmpbuffer;
1464 leaf_dst = bp->b_addr;
1465
1466
1467
1468
1469
1470
1471 memcpy(bp->b_addr, tmpbuffer, xfs_attr3_leaf_hdr_size(leaf_src));
1472
1473
1474 ichdr_src = *ichdr_dst;
1475 ichdr_dst->firstused = XFS_LBSIZE(mp);
1476 ichdr_dst->usedbytes = 0;
1477 ichdr_dst->count = 0;
1478 ichdr_dst->holes = 0;
1479 ichdr_dst->freemap[0].base = xfs_attr3_leaf_hdr_size(leaf_src);
1480 ichdr_dst->freemap[0].size = ichdr_dst->firstused -
1481 ichdr_dst->freemap[0].base;
1482
1483
1484
1485 xfs_attr3_leaf_hdr_to_disk(leaf_dst, ichdr_dst);
1486
1487
1488
1489
1490
1491 xfs_attr3_leaf_moveents(leaf_src, &ichdr_src, 0, leaf_dst, ichdr_dst, 0,
1492 ichdr_src.count, mp);
1493
1494
1495
1496
1497 xfs_trans_log_buf(trans, bp, 0, XFS_LBSIZE(mp) - 1);
1498
1499 kmem_free(tmpbuffer);
1500}
1501
1502
1503
1504
1505
1506static int
1507xfs_attr3_leaf_order(
1508 struct xfs_buf *leaf1_bp,
1509 struct xfs_attr3_icleaf_hdr *leaf1hdr,
1510 struct xfs_buf *leaf2_bp,
1511 struct xfs_attr3_icleaf_hdr *leaf2hdr)
1512{
1513 struct xfs_attr_leaf_entry *entries1;
1514 struct xfs_attr_leaf_entry *entries2;
1515
1516 entries1 = xfs_attr3_leaf_entryp(leaf1_bp->b_addr);
1517 entries2 = xfs_attr3_leaf_entryp(leaf2_bp->b_addr);
1518 if (leaf1hdr->count > 0 && leaf2hdr->count > 0 &&
1519 ((be32_to_cpu(entries2[0].hashval) <
1520 be32_to_cpu(entries1[0].hashval)) ||
1521 (be32_to_cpu(entries2[leaf2hdr->count - 1].hashval) <
1522 be32_to_cpu(entries1[leaf1hdr->count - 1].hashval)))) {
1523 return 1;
1524 }
1525 return 0;
1526}
1527
1528int
1529xfs_attr_leaf_order(
1530 struct xfs_buf *leaf1_bp,
1531 struct xfs_buf *leaf2_bp)
1532{
1533 struct xfs_attr3_icleaf_hdr ichdr1;
1534 struct xfs_attr3_icleaf_hdr ichdr2;
1535
1536 xfs_attr3_leaf_hdr_from_disk(&ichdr1, leaf1_bp->b_addr);
1537 xfs_attr3_leaf_hdr_from_disk(&ichdr2, leaf2_bp->b_addr);
1538 return xfs_attr3_leaf_order(leaf1_bp, &ichdr1, leaf2_bp, &ichdr2);
1539}
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553STATIC void
1554xfs_attr3_leaf_rebalance(
1555 struct xfs_da_state *state,
1556 struct xfs_da_state_blk *blk1,
1557 struct xfs_da_state_blk *blk2)
1558{
1559 struct xfs_da_args *args;
1560 struct xfs_attr_leafblock *leaf1;
1561 struct xfs_attr_leafblock *leaf2;
1562 struct xfs_attr3_icleaf_hdr ichdr1;
1563 struct xfs_attr3_icleaf_hdr ichdr2;
1564 struct xfs_attr_leaf_entry *entries1;
1565 struct xfs_attr_leaf_entry *entries2;
1566 int count;
1567 int totallen;
1568 int max;
1569 int space;
1570 int swap;
1571
1572
1573
1574
1575 ASSERT(blk1->magic == XFS_ATTR_LEAF_MAGIC);
1576 ASSERT(blk2->magic == XFS_ATTR_LEAF_MAGIC);
1577 leaf1 = blk1->bp->b_addr;
1578 leaf2 = blk2->bp->b_addr;
1579 xfs_attr3_leaf_hdr_from_disk(&ichdr1, leaf1);
1580 xfs_attr3_leaf_hdr_from_disk(&ichdr2, leaf2);
1581 ASSERT(ichdr2.count == 0);
1582 args = state->args;
1583
1584 trace_xfs_attr_leaf_rebalance(args);
1585
1586
1587
1588
1589
1590
1591
1592 swap = 0;
1593 if (xfs_attr3_leaf_order(blk1->bp, &ichdr1, blk2->bp, &ichdr2)) {
1594 struct xfs_da_state_blk *tmp_blk;
1595 struct xfs_attr3_icleaf_hdr tmp_ichdr;
1596
1597 tmp_blk = blk1;
1598 blk1 = blk2;
1599 blk2 = tmp_blk;
1600
1601
1602 tmp_ichdr = ichdr1;
1603 ichdr1 = ichdr2;
1604 ichdr2 = tmp_ichdr;
1605
1606 leaf1 = blk1->bp->b_addr;
1607 leaf2 = blk2->bp->b_addr;
1608 swap = 1;
1609 }
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619 state->inleaf = xfs_attr3_leaf_figure_balance(state, blk1, &ichdr1,
1620 blk2, &ichdr2,
1621 &count, &totallen);
1622 if (swap)
1623 state->inleaf = !state->inleaf;
1624
1625
1626
1627
1628 if (count < ichdr1.count) {
1629
1630
1631
1632
1633 count = ichdr1.count - count;
1634 space = ichdr1.usedbytes - totallen;
1635 space += count * sizeof(xfs_attr_leaf_entry_t);
1636
1637
1638
1639
1640 max = ichdr2.firstused - xfs_attr3_leaf_hdr_size(leaf1);
1641 max -= ichdr2.count * sizeof(xfs_attr_leaf_entry_t);
1642 if (space > max)
1643 xfs_attr3_leaf_compact(args, &ichdr2, blk2->bp);
1644
1645
1646
1647
1648 xfs_attr3_leaf_moveents(leaf1, &ichdr1, ichdr1.count - count,
1649 leaf2, &ichdr2, 0, count, state->mp);
1650
1651 } else if (count > ichdr1.count) {
1652
1653
1654
1655
1656 ASSERT(0);
1657
1658
1659
1660
1661
1662 count -= ichdr1.count;
1663 space = totallen - ichdr1.usedbytes;
1664 space += count * sizeof(xfs_attr_leaf_entry_t);
1665
1666
1667
1668
1669 max = ichdr1.firstused - xfs_attr3_leaf_hdr_size(leaf1);
1670 max -= ichdr1.count * sizeof(xfs_attr_leaf_entry_t);
1671 if (space > max)
1672 xfs_attr3_leaf_compact(args, &ichdr1, blk1->bp);
1673
1674
1675
1676
1677 xfs_attr3_leaf_moveents(leaf2, &ichdr2, 0, leaf1, &ichdr1,
1678 ichdr1.count, count, state->mp);
1679 }
1680
1681 xfs_attr3_leaf_hdr_to_disk(leaf1, &ichdr1);
1682 xfs_attr3_leaf_hdr_to_disk(leaf2, &ichdr2);
1683 xfs_trans_log_buf(args->trans, blk1->bp, 0, state->blocksize-1);
1684 xfs_trans_log_buf(args->trans, blk2->bp, 0, state->blocksize-1);
1685
1686
1687
1688
1689 entries1 = xfs_attr3_leaf_entryp(leaf1);
1690 entries2 = xfs_attr3_leaf_entryp(leaf2);
1691 blk1->hashval = be32_to_cpu(entries1[ichdr1.count - 1].hashval);
1692 blk2->hashval = be32_to_cpu(entries2[ichdr2.count - 1].hashval);
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706 if (blk1->index > ichdr1.count) {
1707 ASSERT(state->inleaf == 0);
1708 blk2->index = blk1->index - ichdr1.count;
1709 args->index = args->index2 = blk2->index;
1710 args->blkno = args->blkno2 = blk2->blkno;
1711 } else if (blk1->index == ichdr1.count) {
1712 if (state->inleaf) {
1713 args->index = blk1->index;
1714 args->blkno = blk1->blkno;
1715 args->index2 = 0;
1716 args->blkno2 = blk2->blkno;
1717 } else {
1718
1719
1720
1721
1722
1723 blk2->index = blk1->index - ichdr1.count;
1724 args->index = blk2->index;
1725 args->blkno = blk2->blkno;
1726 if (!state->extravalid) {
1727
1728
1729
1730
1731
1732 args->index2 = blk2->index;
1733 args->blkno2 = blk2->blkno;
1734 }
1735 }
1736 } else {
1737 ASSERT(state->inleaf == 1);
1738 args->index = args->index2 = blk1->index;
1739 args->blkno = args->blkno2 = blk1->blkno;
1740 }
1741}
1742
1743
1744
1745
1746
1747
1748
1749
1750STATIC int
1751xfs_attr3_leaf_figure_balance(
1752 struct xfs_da_state *state,
1753 struct xfs_da_state_blk *blk1,
1754 struct xfs_attr3_icleaf_hdr *ichdr1,
1755 struct xfs_da_state_blk *blk2,
1756 struct xfs_attr3_icleaf_hdr *ichdr2,
1757 int *countarg,
1758 int *usedbytesarg)
1759{
1760 struct xfs_attr_leafblock *leaf1 = blk1->bp->b_addr;
1761 struct xfs_attr_leafblock *leaf2 = blk2->bp->b_addr;
1762 struct xfs_attr_leaf_entry *entry;
1763 int count;
1764 int max;
1765 int index;
1766 int totallen = 0;
1767 int half;
1768 int lastdelta;
1769 int foundit = 0;
1770 int tmp;
1771
1772
1773
1774
1775
1776 max = ichdr1->count + ichdr2->count;
1777 half = (max + 1) * sizeof(*entry);
1778 half += ichdr1->usedbytes + ichdr2->usedbytes +
1779 xfs_attr_leaf_newentsize(state->args->namelen,
1780 state->args->valuelen,
1781 state->blocksize, NULL);
1782 half /= 2;
1783 lastdelta = state->blocksize;
1784 entry = xfs_attr3_leaf_entryp(leaf1);
1785 for (count = index = 0; count < max; entry++, index++, count++) {
1786
1787#define XFS_ATTR_ABS(A) (((A) < 0) ? -(A) : (A))
1788
1789
1790
1791 if (count == blk1->index) {
1792 tmp = totallen + sizeof(*entry) +
1793 xfs_attr_leaf_newentsize(
1794 state->args->namelen,
1795 state->args->valuelen,
1796 state->blocksize, NULL);
1797 if (XFS_ATTR_ABS(half - tmp) > lastdelta)
1798 break;
1799 lastdelta = XFS_ATTR_ABS(half - tmp);
1800 totallen = tmp;
1801 foundit = 1;
1802 }
1803
1804
1805
1806
1807 if (count == ichdr1->count) {
1808 leaf1 = leaf2;
1809 entry = xfs_attr3_leaf_entryp(leaf1);
1810 index = 0;
1811 }
1812
1813
1814
1815
1816 tmp = totallen + sizeof(*entry) + xfs_attr_leaf_entsize(leaf1,
1817 index);
1818 if (XFS_ATTR_ABS(half - tmp) > lastdelta)
1819 break;
1820 lastdelta = XFS_ATTR_ABS(half - tmp);
1821 totallen = tmp;
1822#undef XFS_ATTR_ABS
1823 }
1824
1825
1826
1827
1828
1829 totallen -= count * sizeof(*entry);
1830 if (foundit) {
1831 totallen -= sizeof(*entry) +
1832 xfs_attr_leaf_newentsize(
1833 state->args->namelen,
1834 state->args->valuelen,
1835 state->blocksize, NULL);
1836 }
1837
1838 *countarg = count;
1839 *usedbytesarg = totallen;
1840 return foundit;
1841}
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858int
1859xfs_attr3_leaf_toosmall(
1860 struct xfs_da_state *state,
1861 int *action)
1862{
1863 struct xfs_attr_leafblock *leaf;
1864 struct xfs_da_state_blk *blk;
1865 struct xfs_attr3_icleaf_hdr ichdr;
1866 struct xfs_buf *bp;
1867 xfs_dablk_t blkno;
1868 int bytes;
1869 int forward;
1870 int error;
1871 int retval;
1872 int i;
1873
1874 trace_xfs_attr_leaf_toosmall(state->args);
1875
1876
1877
1878
1879
1880
1881 blk = &state->path.blk[ state->path.active-1 ];
1882 leaf = blk->bp->b_addr;
1883 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
1884 bytes = xfs_attr3_leaf_hdr_size(leaf) +
1885 ichdr.count * sizeof(xfs_attr_leaf_entry_t) +
1886 ichdr.usedbytes;
1887 if (bytes > (state->blocksize >> 1)) {
1888 *action = 0;
1889 return(0);
1890 }
1891
1892
1893
1894
1895
1896
1897
1898 if (ichdr.count == 0) {
1899
1900
1901
1902
1903 forward = (ichdr.forw != 0);
1904 memcpy(&state->altpath, &state->path, sizeof(state->path));
1905 error = xfs_da3_path_shift(state, &state->altpath, forward,
1906 0, &retval);
1907 if (error)
1908 return(error);
1909 if (retval) {
1910 *action = 0;
1911 } else {
1912 *action = 2;
1913 }
1914 return 0;
1915 }
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925 forward = ichdr.forw < ichdr.back;
1926 for (i = 0; i < 2; forward = !forward, i++) {
1927 struct xfs_attr3_icleaf_hdr ichdr2;
1928 if (forward)
1929 blkno = ichdr.forw;
1930 else
1931 blkno = ichdr.back;
1932 if (blkno == 0)
1933 continue;
1934 error = xfs_attr3_leaf_read(state->args->trans, state->args->dp,
1935 blkno, -1, &bp);
1936 if (error)
1937 return(error);
1938
1939 xfs_attr3_leaf_hdr_from_disk(&ichdr2, bp->b_addr);
1940
1941 bytes = state->blocksize - (state->blocksize >> 2) -
1942 ichdr.usedbytes - ichdr2.usedbytes -
1943 ((ichdr.count + ichdr2.count) *
1944 sizeof(xfs_attr_leaf_entry_t)) -
1945 xfs_attr3_leaf_hdr_size(leaf);
1946
1947 xfs_trans_brelse(state->args->trans, bp);
1948 if (bytes >= 0)
1949 break;
1950 }
1951 if (i >= 2) {
1952 *action = 0;
1953 return(0);
1954 }
1955
1956
1957
1958
1959
1960 memcpy(&state->altpath, &state->path, sizeof(state->path));
1961 if (blkno < blk->blkno) {
1962 error = xfs_da3_path_shift(state, &state->altpath, forward,
1963 0, &retval);
1964 } else {
1965 error = xfs_da3_path_shift(state, &state->path, forward,
1966 0, &retval);
1967 }
1968 if (error)
1969 return(error);
1970 if (retval) {
1971 *action = 0;
1972 } else {
1973 *action = 1;
1974 }
1975 return(0);
1976}
1977
1978
1979
1980
1981
1982
1983
1984int
1985xfs_attr3_leaf_remove(
1986 struct xfs_buf *bp,
1987 struct xfs_da_args *args)
1988{
1989 struct xfs_attr_leafblock *leaf;
1990 struct xfs_attr3_icleaf_hdr ichdr;
1991 struct xfs_attr_leaf_entry *entry;
1992 struct xfs_mount *mp = args->trans->t_mountp;
1993 int before;
1994 int after;
1995 int smallest;
1996 int entsize;
1997 int tablesize;
1998 int tmp;
1999 int i;
2000
2001 trace_xfs_attr_leaf_remove(args);
2002
2003 leaf = bp->b_addr;
2004 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
2005
2006 ASSERT(ichdr.count > 0 && ichdr.count < XFS_LBSIZE(mp) / 8);
2007 ASSERT(args->index >= 0 && args->index < ichdr.count);
2008 ASSERT(ichdr.firstused >= ichdr.count * sizeof(*entry) +
2009 xfs_attr3_leaf_hdr_size(leaf));
2010
2011 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
2012
2013 ASSERT(be16_to_cpu(entry->nameidx) >= ichdr.firstused);
2014 ASSERT(be16_to_cpu(entry->nameidx) < XFS_LBSIZE(mp));
2015
2016
2017
2018
2019
2020
2021
2022 tablesize = ichdr.count * sizeof(xfs_attr_leaf_entry_t)
2023 + xfs_attr3_leaf_hdr_size(leaf);
2024 tmp = ichdr.freemap[0].size;
2025 before = after = -1;
2026 smallest = XFS_ATTR_LEAF_MAPSIZE - 1;
2027 entsize = xfs_attr_leaf_entsize(leaf, args->index);
2028 for (i = 0; i < XFS_ATTR_LEAF_MAPSIZE; i++) {
2029 ASSERT(ichdr.freemap[i].base < XFS_LBSIZE(mp));
2030 ASSERT(ichdr.freemap[i].size < XFS_LBSIZE(mp));
2031 if (ichdr.freemap[i].base == tablesize) {
2032 ichdr.freemap[i].base -= sizeof(xfs_attr_leaf_entry_t);
2033 ichdr.freemap[i].size += sizeof(xfs_attr_leaf_entry_t);
2034 }
2035
2036 if (ichdr.freemap[i].base + ichdr.freemap[i].size ==
2037 be16_to_cpu(entry->nameidx)) {
2038 before = i;
2039 } else if (ichdr.freemap[i].base ==
2040 (be16_to_cpu(entry->nameidx) + entsize)) {
2041 after = i;
2042 } else if (ichdr.freemap[i].size < tmp) {
2043 tmp = ichdr.freemap[i].size;
2044 smallest = i;
2045 }
2046 }
2047
2048
2049
2050
2051
2052 if ((before >= 0) || (after >= 0)) {
2053 if ((before >= 0) && (after >= 0)) {
2054 ichdr.freemap[before].size += entsize;
2055 ichdr.freemap[before].size += ichdr.freemap[after].size;
2056 ichdr.freemap[after].base = 0;
2057 ichdr.freemap[after].size = 0;
2058 } else if (before >= 0) {
2059 ichdr.freemap[before].size += entsize;
2060 } else {
2061 ichdr.freemap[after].base = be16_to_cpu(entry->nameidx);
2062 ichdr.freemap[after].size += entsize;
2063 }
2064 } else {
2065
2066
2067
2068 if (ichdr.freemap[smallest].size < entsize) {
2069 ichdr.freemap[smallest].base = be16_to_cpu(entry->nameidx);
2070 ichdr.freemap[smallest].size = entsize;
2071 }
2072 }
2073
2074
2075
2076
2077 if (be16_to_cpu(entry->nameidx) == ichdr.firstused)
2078 smallest = 1;
2079 else
2080 smallest = 0;
2081
2082
2083
2084
2085 memset(xfs_attr3_leaf_name(leaf, args->index), 0, entsize);
2086 ichdr.usedbytes -= entsize;
2087 xfs_trans_log_buf(args->trans, bp,
2088 XFS_DA_LOGRANGE(leaf, xfs_attr3_leaf_name(leaf, args->index),
2089 entsize));
2090
2091 tmp = (ichdr.count - args->index) * sizeof(xfs_attr_leaf_entry_t);
2092 memmove(entry, entry + 1, tmp);
2093 ichdr.count--;
2094 xfs_trans_log_buf(args->trans, bp,
2095 XFS_DA_LOGRANGE(leaf, entry, tmp + sizeof(xfs_attr_leaf_entry_t)));
2096
2097 entry = &xfs_attr3_leaf_entryp(leaf)[ichdr.count];
2098 memset(entry, 0, sizeof(xfs_attr_leaf_entry_t));
2099
2100
2101
2102
2103
2104
2105
2106 if (smallest) {
2107 tmp = XFS_LBSIZE(mp);
2108 entry = xfs_attr3_leaf_entryp(leaf);
2109 for (i = ichdr.count - 1; i >= 0; entry++, i--) {
2110 ASSERT(be16_to_cpu(entry->nameidx) >= ichdr.firstused);
2111 ASSERT(be16_to_cpu(entry->nameidx) < XFS_LBSIZE(mp));
2112
2113 if (be16_to_cpu(entry->nameidx) < tmp)
2114 tmp = be16_to_cpu(entry->nameidx);
2115 }
2116 ichdr.firstused = tmp;
2117 if (!ichdr.firstused)
2118 ichdr.firstused = tmp - XFS_ATTR_LEAF_NAME_ALIGN;
2119 } else {
2120 ichdr.holes = 1;
2121 }
2122 xfs_attr3_leaf_hdr_to_disk(leaf, &ichdr);
2123 xfs_trans_log_buf(args->trans, bp,
2124 XFS_DA_LOGRANGE(leaf, &leaf->hdr,
2125 xfs_attr3_leaf_hdr_size(leaf)));
2126
2127
2128
2129
2130
2131 tmp = ichdr.usedbytes + xfs_attr3_leaf_hdr_size(leaf) +
2132 ichdr.count * sizeof(xfs_attr_leaf_entry_t);
2133
2134 return tmp < mp->m_attr_magicpct;
2135}
2136
2137
2138
2139
2140void
2141xfs_attr3_leaf_unbalance(
2142 struct xfs_da_state *state,
2143 struct xfs_da_state_blk *drop_blk,
2144 struct xfs_da_state_blk *save_blk)
2145{
2146 struct xfs_attr_leafblock *drop_leaf = drop_blk->bp->b_addr;
2147 struct xfs_attr_leafblock *save_leaf = save_blk->bp->b_addr;
2148 struct xfs_attr3_icleaf_hdr drophdr;
2149 struct xfs_attr3_icleaf_hdr savehdr;
2150 struct xfs_attr_leaf_entry *entry;
2151 struct xfs_mount *mp = state->mp;
2152
2153 trace_xfs_attr_leaf_unbalance(state->args);
2154
2155 drop_leaf = drop_blk->bp->b_addr;
2156 save_leaf = save_blk->bp->b_addr;
2157 xfs_attr3_leaf_hdr_from_disk(&drophdr, drop_leaf);
2158 xfs_attr3_leaf_hdr_from_disk(&savehdr, save_leaf);
2159 entry = xfs_attr3_leaf_entryp(drop_leaf);
2160
2161
2162
2163
2164 drop_blk->hashval = be32_to_cpu(entry[drophdr.count - 1].hashval);
2165
2166
2167
2168
2169
2170
2171 if (savehdr.holes == 0) {
2172
2173
2174
2175
2176 if (xfs_attr3_leaf_order(save_blk->bp, &savehdr,
2177 drop_blk->bp, &drophdr)) {
2178 xfs_attr3_leaf_moveents(drop_leaf, &drophdr, 0,
2179 save_leaf, &savehdr, 0,
2180 drophdr.count, mp);
2181 } else {
2182 xfs_attr3_leaf_moveents(drop_leaf, &drophdr, 0,
2183 save_leaf, &savehdr,
2184 savehdr.count, drophdr.count, mp);
2185 }
2186 } else {
2187
2188
2189
2190
2191 struct xfs_attr_leafblock *tmp_leaf;
2192 struct xfs_attr3_icleaf_hdr tmphdr;
2193
2194 tmp_leaf = kmem_zalloc(state->blocksize, KM_SLEEP);
2195
2196
2197
2198
2199
2200
2201 memcpy(tmp_leaf, save_leaf, xfs_attr3_leaf_hdr_size(save_leaf));
2202
2203 memset(&tmphdr, 0, sizeof(tmphdr));
2204 tmphdr.magic = savehdr.magic;
2205 tmphdr.forw = savehdr.forw;
2206 tmphdr.back = savehdr.back;
2207 tmphdr.firstused = state->blocksize;
2208
2209
2210 xfs_attr3_leaf_hdr_to_disk(tmp_leaf, &tmphdr);
2211
2212 if (xfs_attr3_leaf_order(save_blk->bp, &savehdr,
2213 drop_blk->bp, &drophdr)) {
2214 xfs_attr3_leaf_moveents(drop_leaf, &drophdr, 0,
2215 tmp_leaf, &tmphdr, 0,
2216 drophdr.count, mp);
2217 xfs_attr3_leaf_moveents(save_leaf, &savehdr, 0,
2218 tmp_leaf, &tmphdr, tmphdr.count,
2219 savehdr.count, mp);
2220 } else {
2221 xfs_attr3_leaf_moveents(save_leaf, &savehdr, 0,
2222 tmp_leaf, &tmphdr, 0,
2223 savehdr.count, mp);
2224 xfs_attr3_leaf_moveents(drop_leaf, &drophdr, 0,
2225 tmp_leaf, &tmphdr, tmphdr.count,
2226 drophdr.count, mp);
2227 }
2228 memcpy(save_leaf, tmp_leaf, state->blocksize);
2229 savehdr = tmphdr;
2230 kmem_free(tmp_leaf);
2231 }
2232
2233 xfs_attr3_leaf_hdr_to_disk(save_leaf, &savehdr);
2234 xfs_trans_log_buf(state->args->trans, save_blk->bp, 0,
2235 state->blocksize - 1);
2236
2237
2238
2239
2240 entry = xfs_attr3_leaf_entryp(save_leaf);
2241 save_blk->hashval = be32_to_cpu(entry[savehdr.count - 1].hashval);
2242}
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261int
2262xfs_attr3_leaf_lookup_int(
2263 struct xfs_buf *bp,
2264 struct xfs_da_args *args)
2265{
2266 struct xfs_attr_leafblock *leaf;
2267 struct xfs_attr3_icleaf_hdr ichdr;
2268 struct xfs_attr_leaf_entry *entry;
2269 struct xfs_attr_leaf_entry *entries;
2270 struct xfs_attr_leaf_name_local *name_loc;
2271 struct xfs_attr_leaf_name_remote *name_rmt;
2272 xfs_dahash_t hashval;
2273 int probe;
2274 int span;
2275
2276 trace_xfs_attr_leaf_lookup(args);
2277
2278 leaf = bp->b_addr;
2279 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
2280 entries = xfs_attr3_leaf_entryp(leaf);
2281 ASSERT(ichdr.count < XFS_LBSIZE(args->dp->i_mount) / 8);
2282
2283
2284
2285
2286 hashval = args->hashval;
2287 probe = span = ichdr.count / 2;
2288 for (entry = &entries[probe]; span > 4; entry = &entries[probe]) {
2289 span /= 2;
2290 if (be32_to_cpu(entry->hashval) < hashval)
2291 probe += span;
2292 else if (be32_to_cpu(entry->hashval) > hashval)
2293 probe -= span;
2294 else
2295 break;
2296 }
2297 ASSERT(probe >= 0 && (!ichdr.count || probe < ichdr.count));
2298 ASSERT(span <= 4 || be32_to_cpu(entry->hashval) == hashval);
2299
2300
2301
2302
2303
2304 while (probe > 0 && be32_to_cpu(entry->hashval) >= hashval) {
2305 entry--;
2306 probe--;
2307 }
2308 while (probe < ichdr.count &&
2309 be32_to_cpu(entry->hashval) < hashval) {
2310 entry++;
2311 probe++;
2312 }
2313 if (probe == ichdr.count || be32_to_cpu(entry->hashval) != hashval) {
2314 args->index = probe;
2315 return XFS_ERROR(ENOATTR);
2316 }
2317
2318
2319
2320
2321 for (; probe < ichdr.count && (be32_to_cpu(entry->hashval) == hashval);
2322 entry++, probe++) {
2323
2324
2325
2326
2327
2328
2329
2330 if ((args->flags & XFS_ATTR_INCOMPLETE) !=
2331 (entry->flags & XFS_ATTR_INCOMPLETE)) {
2332 continue;
2333 }
2334 if (entry->flags & XFS_ATTR_LOCAL) {
2335 name_loc = xfs_attr3_leaf_name_local(leaf, probe);
2336 if (name_loc->namelen != args->namelen)
2337 continue;
2338 if (memcmp(args->name, name_loc->nameval,
2339 args->namelen) != 0)
2340 continue;
2341 if (!xfs_attr_namesp_match(args->flags, entry->flags))
2342 continue;
2343 args->index = probe;
2344 return XFS_ERROR(EEXIST);
2345 } else {
2346 name_rmt = xfs_attr3_leaf_name_remote(leaf, probe);
2347 if (name_rmt->namelen != args->namelen)
2348 continue;
2349 if (memcmp(args->name, name_rmt->name,
2350 args->namelen) != 0)
2351 continue;
2352 if (!xfs_attr_namesp_match(args->flags, entry->flags))
2353 continue;
2354 args->index = probe;
2355 args->valuelen = be32_to_cpu(name_rmt->valuelen);
2356 args->rmtblkno = be32_to_cpu(name_rmt->valueblk);
2357 args->rmtblkcnt = xfs_attr3_rmt_blocks(
2358 args->dp->i_mount,
2359 args->valuelen);
2360 return XFS_ERROR(EEXIST);
2361 }
2362 }
2363 args->index = probe;
2364 return XFS_ERROR(ENOATTR);
2365}
2366
2367
2368
2369
2370
2371int
2372xfs_attr3_leaf_getvalue(
2373 struct xfs_buf *bp,
2374 struct xfs_da_args *args)
2375{
2376 struct xfs_attr_leafblock *leaf;
2377 struct xfs_attr3_icleaf_hdr ichdr;
2378 struct xfs_attr_leaf_entry *entry;
2379 struct xfs_attr_leaf_name_local *name_loc;
2380 struct xfs_attr_leaf_name_remote *name_rmt;
2381 int valuelen;
2382
2383 leaf = bp->b_addr;
2384 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
2385 ASSERT(ichdr.count < XFS_LBSIZE(args->dp->i_mount) / 8);
2386 ASSERT(args->index < ichdr.count);
2387
2388 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
2389 if (entry->flags & XFS_ATTR_LOCAL) {
2390 name_loc = xfs_attr3_leaf_name_local(leaf, args->index);
2391 ASSERT(name_loc->namelen == args->namelen);
2392 ASSERT(memcmp(args->name, name_loc->nameval, args->namelen) == 0);
2393 valuelen = be16_to_cpu(name_loc->valuelen);
2394 if (args->flags & ATTR_KERNOVAL) {
2395 args->valuelen = valuelen;
2396 return 0;
2397 }
2398 if (args->valuelen < valuelen) {
2399 args->valuelen = valuelen;
2400 return XFS_ERROR(ERANGE);
2401 }
2402 args->valuelen = valuelen;
2403 memcpy(args->value, &name_loc->nameval[args->namelen], valuelen);
2404 } else {
2405 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
2406 ASSERT(name_rmt->namelen == args->namelen);
2407 ASSERT(memcmp(args->name, name_rmt->name, args->namelen) == 0);
2408 valuelen = be32_to_cpu(name_rmt->valuelen);
2409 args->rmtblkno = be32_to_cpu(name_rmt->valueblk);
2410 args->rmtblkcnt = xfs_attr3_rmt_blocks(args->dp->i_mount,
2411 valuelen);
2412 if (args->flags & ATTR_KERNOVAL) {
2413 args->valuelen = valuelen;
2414 return 0;
2415 }
2416 if (args->valuelen < valuelen) {
2417 args->valuelen = valuelen;
2418 return XFS_ERROR(ERANGE);
2419 }
2420 args->valuelen = valuelen;
2421 }
2422 return 0;
2423}
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434STATIC void
2435xfs_attr3_leaf_moveents(
2436 struct xfs_attr_leafblock *leaf_s,
2437 struct xfs_attr3_icleaf_hdr *ichdr_s,
2438 int start_s,
2439 struct xfs_attr_leafblock *leaf_d,
2440 struct xfs_attr3_icleaf_hdr *ichdr_d,
2441 int start_d,
2442 int count,
2443 struct xfs_mount *mp)
2444{
2445 struct xfs_attr_leaf_entry *entry_s;
2446 struct xfs_attr_leaf_entry *entry_d;
2447 int desti;
2448 int tmp;
2449 int i;
2450
2451
2452
2453
2454 if (count == 0)
2455 return;
2456
2457
2458
2459
2460 ASSERT(ichdr_s->magic == XFS_ATTR_LEAF_MAGIC ||
2461 ichdr_s->magic == XFS_ATTR3_LEAF_MAGIC);
2462 ASSERT(ichdr_s->magic == ichdr_d->magic);
2463 ASSERT(ichdr_s->count > 0 && ichdr_s->count < XFS_LBSIZE(mp) / 8);
2464 ASSERT(ichdr_s->firstused >= (ichdr_s->count * sizeof(*entry_s))
2465 + xfs_attr3_leaf_hdr_size(leaf_s));
2466 ASSERT(ichdr_d->count < XFS_LBSIZE(mp) / 8);
2467 ASSERT(ichdr_d->firstused >= (ichdr_d->count * sizeof(*entry_d))
2468 + xfs_attr3_leaf_hdr_size(leaf_d));
2469
2470 ASSERT(start_s < ichdr_s->count);
2471 ASSERT(start_d <= ichdr_d->count);
2472 ASSERT(count <= ichdr_s->count);
2473
2474
2475
2476
2477
2478 if (start_d < ichdr_d->count) {
2479 tmp = ichdr_d->count - start_d;
2480 tmp *= sizeof(xfs_attr_leaf_entry_t);
2481 entry_s = &xfs_attr3_leaf_entryp(leaf_d)[start_d];
2482 entry_d = &xfs_attr3_leaf_entryp(leaf_d)[start_d + count];
2483 memmove(entry_d, entry_s, tmp);
2484 }
2485
2486
2487
2488
2489
2490 entry_s = &xfs_attr3_leaf_entryp(leaf_s)[start_s];
2491 entry_d = &xfs_attr3_leaf_entryp(leaf_d)[start_d];
2492 desti = start_d;
2493 for (i = 0; i < count; entry_s++, entry_d++, desti++, i++) {
2494 ASSERT(be16_to_cpu(entry_s->nameidx) >= ichdr_s->firstused);
2495 tmp = xfs_attr_leaf_entsize(leaf_s, start_s + i);
2496#ifdef GROT
2497
2498
2499
2500
2501
2502 if (entry_s->flags & XFS_ATTR_INCOMPLETE) {
2503 memset(xfs_attr3_leaf_name(leaf_s, start_s + i), 0, tmp);
2504 ichdr_s->usedbytes -= tmp;
2505 ichdr_s->count -= 1;
2506 entry_d--;
2507 desti--;
2508 if ((start_s + i) < offset)
2509 result++;
2510 } else {
2511#endif
2512 ichdr_d->firstused -= tmp;
2513
2514 entry_d->hashval = entry_s->hashval;
2515 entry_d->nameidx = cpu_to_be16(ichdr_d->firstused);
2516 entry_d->flags = entry_s->flags;
2517 ASSERT(be16_to_cpu(entry_d->nameidx) + tmp
2518 <= XFS_LBSIZE(mp));
2519 memmove(xfs_attr3_leaf_name(leaf_d, desti),
2520 xfs_attr3_leaf_name(leaf_s, start_s + i), tmp);
2521 ASSERT(be16_to_cpu(entry_s->nameidx) + tmp
2522 <= XFS_LBSIZE(mp));
2523 memset(xfs_attr3_leaf_name(leaf_s, start_s + i), 0, tmp);
2524 ichdr_s->usedbytes -= tmp;
2525 ichdr_d->usedbytes += tmp;
2526 ichdr_s->count -= 1;
2527 ichdr_d->count += 1;
2528 tmp = ichdr_d->count * sizeof(xfs_attr_leaf_entry_t)
2529 + xfs_attr3_leaf_hdr_size(leaf_d);
2530 ASSERT(ichdr_d->firstused >= tmp);
2531#ifdef GROT
2532 }
2533#endif
2534 }
2535
2536
2537
2538
2539 if (start_s == ichdr_s->count) {
2540 tmp = count * sizeof(xfs_attr_leaf_entry_t);
2541 entry_s = &xfs_attr3_leaf_entryp(leaf_s)[start_s];
2542 ASSERT(((char *)entry_s + tmp) <=
2543 ((char *)leaf_s + XFS_LBSIZE(mp)));
2544 memset(entry_s, 0, tmp);
2545 } else {
2546
2547
2548
2549
2550 tmp = (ichdr_s->count - count) * sizeof(xfs_attr_leaf_entry_t);
2551 entry_s = &xfs_attr3_leaf_entryp(leaf_s)[start_s + count];
2552 entry_d = &xfs_attr3_leaf_entryp(leaf_s)[start_s];
2553 memmove(entry_d, entry_s, tmp);
2554
2555 tmp = count * sizeof(xfs_attr_leaf_entry_t);
2556 entry_s = &xfs_attr3_leaf_entryp(leaf_s)[ichdr_s->count];
2557 ASSERT(((char *)entry_s + tmp) <=
2558 ((char *)leaf_s + XFS_LBSIZE(mp)));
2559 memset(entry_s, 0, tmp);
2560 }
2561
2562
2563
2564
2565 ichdr_d->freemap[0].base = xfs_attr3_leaf_hdr_size(leaf_d);
2566 ichdr_d->freemap[0].base += ichdr_d->count * sizeof(xfs_attr_leaf_entry_t);
2567 ichdr_d->freemap[0].size = ichdr_d->firstused - ichdr_d->freemap[0].base;
2568 ichdr_d->freemap[1].base = 0;
2569 ichdr_d->freemap[2].base = 0;
2570 ichdr_d->freemap[1].size = 0;
2571 ichdr_d->freemap[2].size = 0;
2572 ichdr_s->holes = 1;
2573}
2574
2575
2576
2577
2578xfs_dahash_t
2579xfs_attr_leaf_lasthash(
2580 struct xfs_buf *bp,
2581 int *count)
2582{
2583 struct xfs_attr3_icleaf_hdr ichdr;
2584 struct xfs_attr_leaf_entry *entries;
2585
2586 xfs_attr3_leaf_hdr_from_disk(&ichdr, bp->b_addr);
2587 entries = xfs_attr3_leaf_entryp(bp->b_addr);
2588 if (count)
2589 *count = ichdr.count;
2590 if (!ichdr.count)
2591 return 0;
2592 return be32_to_cpu(entries[ichdr.count - 1].hashval);
2593}
2594
2595
2596
2597
2598
2599STATIC int
2600xfs_attr_leaf_entsize(xfs_attr_leafblock_t *leaf, int index)
2601{
2602 struct xfs_attr_leaf_entry *entries;
2603 xfs_attr_leaf_name_local_t *name_loc;
2604 xfs_attr_leaf_name_remote_t *name_rmt;
2605 int size;
2606
2607 entries = xfs_attr3_leaf_entryp(leaf);
2608 if (entries[index].flags & XFS_ATTR_LOCAL) {
2609 name_loc = xfs_attr3_leaf_name_local(leaf, index);
2610 size = xfs_attr_leaf_entsize_local(name_loc->namelen,
2611 be16_to_cpu(name_loc->valuelen));
2612 } else {
2613 name_rmt = xfs_attr3_leaf_name_remote(leaf, index);
2614 size = xfs_attr_leaf_entsize_remote(name_rmt->namelen);
2615 }
2616 return size;
2617}
2618
2619
2620
2621
2622
2623
2624
2625int
2626xfs_attr_leaf_newentsize(int namelen, int valuelen, int blocksize, int *local)
2627{
2628 int size;
2629
2630 size = xfs_attr_leaf_entsize_local(namelen, valuelen);
2631 if (size < xfs_attr_leaf_entsize_local_max(blocksize)) {
2632 if (local) {
2633 *local = 1;
2634 }
2635 } else {
2636 size = xfs_attr_leaf_entsize_remote(namelen);
2637 if (local) {
2638 *local = 0;
2639 }
2640 }
2641 return size;
2642}
2643
2644
2645
2646
2647int
2648xfs_attr3_leaf_list_int(
2649 struct xfs_buf *bp,
2650 struct xfs_attr_list_context *context)
2651{
2652 struct attrlist_cursor_kern *cursor;
2653 struct xfs_attr_leafblock *leaf;
2654 struct xfs_attr3_icleaf_hdr ichdr;
2655 struct xfs_attr_leaf_entry *entries;
2656 struct xfs_attr_leaf_entry *entry;
2657 int retval;
2658 int i;
2659
2660 trace_xfs_attr_list_leaf(context);
2661
2662 leaf = bp->b_addr;
2663 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
2664 entries = xfs_attr3_leaf_entryp(leaf);
2665
2666 cursor = context->cursor;
2667 cursor->initted = 1;
2668
2669
2670
2671
2672 if (context->resynch) {
2673 entry = &entries[0];
2674 for (i = 0; i < ichdr.count; entry++, i++) {
2675 if (be32_to_cpu(entry->hashval) == cursor->hashval) {
2676 if (cursor->offset == context->dupcnt) {
2677 context->dupcnt = 0;
2678 break;
2679 }
2680 context->dupcnt++;
2681 } else if (be32_to_cpu(entry->hashval) >
2682 cursor->hashval) {
2683 context->dupcnt = 0;
2684 break;
2685 }
2686 }
2687 if (i == ichdr.count) {
2688 trace_xfs_attr_list_notfound(context);
2689 return 0;
2690 }
2691 } else {
2692 entry = &entries[0];
2693 i = 0;
2694 }
2695 context->resynch = 0;
2696
2697
2698
2699
2700 retval = 0;
2701 for (; i < ichdr.count; entry++, i++) {
2702 if (be32_to_cpu(entry->hashval) != cursor->hashval) {
2703 cursor->hashval = be32_to_cpu(entry->hashval);
2704 cursor->offset = 0;
2705 }
2706
2707 if (entry->flags & XFS_ATTR_INCOMPLETE)
2708 continue;
2709
2710 if (entry->flags & XFS_ATTR_LOCAL) {
2711 xfs_attr_leaf_name_local_t *name_loc =
2712 xfs_attr3_leaf_name_local(leaf, i);
2713
2714 retval = context->put_listent(context,
2715 entry->flags,
2716 name_loc->nameval,
2717 (int)name_loc->namelen,
2718 be16_to_cpu(name_loc->valuelen),
2719 &name_loc->nameval[name_loc->namelen]);
2720 if (retval)
2721 return retval;
2722 } else {
2723 xfs_attr_leaf_name_remote_t *name_rmt =
2724 xfs_attr3_leaf_name_remote(leaf, i);
2725
2726 int valuelen = be32_to_cpu(name_rmt->valuelen);
2727
2728 if (context->put_value) {
2729 xfs_da_args_t args;
2730
2731 memset((char *)&args, 0, sizeof(args));
2732 args.dp = context->dp;
2733 args.whichfork = XFS_ATTR_FORK;
2734 args.valuelen = valuelen;
2735 args.value = kmem_alloc(valuelen, KM_SLEEP | KM_NOFS);
2736 args.rmtblkno = be32_to_cpu(name_rmt->valueblk);
2737 args.rmtblkcnt = xfs_attr3_rmt_blocks(
2738 args.dp->i_mount, valuelen);
2739 retval = xfs_attr_rmtval_get(&args);
2740 if (retval)
2741 return retval;
2742 retval = context->put_listent(context,
2743 entry->flags,
2744 name_rmt->name,
2745 (int)name_rmt->namelen,
2746 valuelen,
2747 args.value);
2748 kmem_free(args.value);
2749 } else {
2750 retval = context->put_listent(context,
2751 entry->flags,
2752 name_rmt->name,
2753 (int)name_rmt->namelen,
2754 valuelen,
2755 NULL);
2756 }
2757 if (retval)
2758 return retval;
2759 }
2760 if (context->seen_enough)
2761 break;
2762 cursor->offset++;
2763 }
2764 trace_xfs_attr_list_leaf_end(context);
2765 return retval;
2766}
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776int
2777xfs_attr3_leaf_clearflag(
2778 struct xfs_da_args *args)
2779{
2780 struct xfs_attr_leafblock *leaf;
2781 struct xfs_attr_leaf_entry *entry;
2782 struct xfs_attr_leaf_name_remote *name_rmt;
2783 struct xfs_buf *bp;
2784 int error;
2785#ifdef DEBUG
2786 struct xfs_attr3_icleaf_hdr ichdr;
2787 xfs_attr_leaf_name_local_t *name_loc;
2788 int namelen;
2789 char *name;
2790#endif
2791
2792 trace_xfs_attr_leaf_clearflag(args);
2793
2794
2795
2796 error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
2797 if (error)
2798 return(error);
2799
2800 leaf = bp->b_addr;
2801 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
2802 ASSERT(entry->flags & XFS_ATTR_INCOMPLETE);
2803
2804#ifdef DEBUG
2805 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
2806 ASSERT(args->index < ichdr.count);
2807 ASSERT(args->index >= 0);
2808
2809 if (entry->flags & XFS_ATTR_LOCAL) {
2810 name_loc = xfs_attr3_leaf_name_local(leaf, args->index);
2811 namelen = name_loc->namelen;
2812 name = (char *)name_loc->nameval;
2813 } else {
2814 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
2815 namelen = name_rmt->namelen;
2816 name = (char *)name_rmt->name;
2817 }
2818 ASSERT(be32_to_cpu(entry->hashval) == args->hashval);
2819 ASSERT(namelen == args->namelen);
2820 ASSERT(memcmp(name, args->name, namelen) == 0);
2821#endif
2822
2823 entry->flags &= ~XFS_ATTR_INCOMPLETE;
2824 xfs_trans_log_buf(args->trans, bp,
2825 XFS_DA_LOGRANGE(leaf, entry, sizeof(*entry)));
2826
2827 if (args->rmtblkno) {
2828 ASSERT((entry->flags & XFS_ATTR_LOCAL) == 0);
2829 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
2830 name_rmt->valueblk = cpu_to_be32(args->rmtblkno);
2831 name_rmt->valuelen = cpu_to_be32(args->valuelen);
2832 xfs_trans_log_buf(args->trans, bp,
2833 XFS_DA_LOGRANGE(leaf, name_rmt, sizeof(*name_rmt)));
2834 }
2835
2836
2837
2838
2839 return xfs_trans_roll(&args->trans, args->dp);
2840}
2841
2842
2843
2844
2845int
2846xfs_attr3_leaf_setflag(
2847 struct xfs_da_args *args)
2848{
2849 struct xfs_attr_leafblock *leaf;
2850 struct xfs_attr_leaf_entry *entry;
2851 struct xfs_attr_leaf_name_remote *name_rmt;
2852 struct xfs_buf *bp;
2853 int error;
2854#ifdef DEBUG
2855 struct xfs_attr3_icleaf_hdr ichdr;
2856#endif
2857
2858 trace_xfs_attr_leaf_setflag(args);
2859
2860
2861
2862
2863 error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
2864 if (error)
2865 return(error);
2866
2867 leaf = bp->b_addr;
2868#ifdef DEBUG
2869 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
2870 ASSERT(args->index < ichdr.count);
2871 ASSERT(args->index >= 0);
2872#endif
2873 entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
2874
2875 ASSERT((entry->flags & XFS_ATTR_INCOMPLETE) == 0);
2876 entry->flags |= XFS_ATTR_INCOMPLETE;
2877 xfs_trans_log_buf(args->trans, bp,
2878 XFS_DA_LOGRANGE(leaf, entry, sizeof(*entry)));
2879 if ((entry->flags & XFS_ATTR_LOCAL) == 0) {
2880 name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
2881 name_rmt->valueblk = 0;
2882 name_rmt->valuelen = 0;
2883 xfs_trans_log_buf(args->trans, bp,
2884 XFS_DA_LOGRANGE(leaf, name_rmt, sizeof(*name_rmt)));
2885 }
2886
2887
2888
2889
2890 return xfs_trans_roll(&args->trans, args->dp);
2891}
2892
2893
2894
2895
2896
2897
2898
2899
2900int
2901xfs_attr3_leaf_flipflags(
2902 struct xfs_da_args *args)
2903{
2904 struct xfs_attr_leafblock *leaf1;
2905 struct xfs_attr_leafblock *leaf2;
2906 struct xfs_attr_leaf_entry *entry1;
2907 struct xfs_attr_leaf_entry *entry2;
2908 struct xfs_attr_leaf_name_remote *name_rmt;
2909 struct xfs_buf *bp1;
2910 struct xfs_buf *bp2;
2911 int error;
2912#ifdef DEBUG
2913 struct xfs_attr3_icleaf_hdr ichdr1;
2914 struct xfs_attr3_icleaf_hdr ichdr2;
2915 xfs_attr_leaf_name_local_t *name_loc;
2916 int namelen1, namelen2;
2917 char *name1, *name2;
2918#endif
2919
2920 trace_xfs_attr_leaf_flipflags(args);
2921
2922
2923
2924
2925 error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp1);
2926 if (error)
2927 return error;
2928
2929
2930
2931
2932 if (args->blkno2 != args->blkno) {
2933 error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno2,
2934 -1, &bp2);
2935 if (error)
2936 return error;
2937 } else {
2938 bp2 = bp1;
2939 }
2940
2941 leaf1 = bp1->b_addr;
2942 entry1 = &xfs_attr3_leaf_entryp(leaf1)[args->index];
2943
2944 leaf2 = bp2->b_addr;
2945 entry2 = &xfs_attr3_leaf_entryp(leaf2)[args->index2];
2946
2947#ifdef DEBUG
2948 xfs_attr3_leaf_hdr_from_disk(&ichdr1, leaf1);
2949 ASSERT(args->index < ichdr1.count);
2950 ASSERT(args->index >= 0);
2951
2952 xfs_attr3_leaf_hdr_from_disk(&ichdr2, leaf2);
2953 ASSERT(args->index2 < ichdr2.count);
2954 ASSERT(args->index2 >= 0);
2955
2956 if (entry1->flags & XFS_ATTR_LOCAL) {
2957 name_loc = xfs_attr3_leaf_name_local(leaf1, args->index);
2958 namelen1 = name_loc->namelen;
2959 name1 = (char *)name_loc->nameval;
2960 } else {
2961 name_rmt = xfs_attr3_leaf_name_remote(leaf1, args->index);
2962 namelen1 = name_rmt->namelen;
2963 name1 = (char *)name_rmt->name;
2964 }
2965 if (entry2->flags & XFS_ATTR_LOCAL) {
2966 name_loc = xfs_attr3_leaf_name_local(leaf2, args->index2);
2967 namelen2 = name_loc->namelen;
2968 name2 = (char *)name_loc->nameval;
2969 } else {
2970 name_rmt = xfs_attr3_leaf_name_remote(leaf2, args->index2);
2971 namelen2 = name_rmt->namelen;
2972 name2 = (char *)name_rmt->name;
2973 }
2974 ASSERT(be32_to_cpu(entry1->hashval) == be32_to_cpu(entry2->hashval));
2975 ASSERT(namelen1 == namelen2);
2976 ASSERT(memcmp(name1, name2, namelen1) == 0);
2977#endif
2978
2979 ASSERT(entry1->flags & XFS_ATTR_INCOMPLETE);
2980 ASSERT((entry2->flags & XFS_ATTR_INCOMPLETE) == 0);
2981
2982 entry1->flags &= ~XFS_ATTR_INCOMPLETE;
2983 xfs_trans_log_buf(args->trans, bp1,
2984 XFS_DA_LOGRANGE(leaf1, entry1, sizeof(*entry1)));
2985 if (args->rmtblkno) {
2986 ASSERT((entry1->flags & XFS_ATTR_LOCAL) == 0);
2987 name_rmt = xfs_attr3_leaf_name_remote(leaf1, args->index);
2988 name_rmt->valueblk = cpu_to_be32(args->rmtblkno);
2989 name_rmt->valuelen = cpu_to_be32(args->valuelen);
2990 xfs_trans_log_buf(args->trans, bp1,
2991 XFS_DA_LOGRANGE(leaf1, name_rmt, sizeof(*name_rmt)));
2992 }
2993
2994 entry2->flags |= XFS_ATTR_INCOMPLETE;
2995 xfs_trans_log_buf(args->trans, bp2,
2996 XFS_DA_LOGRANGE(leaf2, entry2, sizeof(*entry2)));
2997 if ((entry2->flags & XFS_ATTR_LOCAL) == 0) {
2998 name_rmt = xfs_attr3_leaf_name_remote(leaf2, args->index2);
2999 name_rmt->valueblk = 0;
3000 name_rmt->valuelen = 0;
3001 xfs_trans_log_buf(args->trans, bp2,
3002 XFS_DA_LOGRANGE(leaf2, name_rmt, sizeof(*name_rmt)));
3003 }
3004
3005
3006
3007
3008 error = xfs_trans_roll(&args->trans, args->dp);
3009
3010 return error;
3011}
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021int
3022xfs_attr3_root_inactive(
3023 struct xfs_trans **trans,
3024 struct xfs_inode *dp)
3025{
3026 struct xfs_da_blkinfo *info;
3027 struct xfs_buf *bp;
3028 xfs_daddr_t blkno;
3029 int error;
3030
3031
3032
3033
3034
3035
3036
3037 error = xfs_da3_node_read(*trans, dp, 0, -1, &bp, XFS_ATTR_FORK);
3038 if (error)
3039 return error;
3040 blkno = bp->b_bn;
3041
3042
3043
3044
3045
3046 info = bp->b_addr;
3047 switch (info->magic) {
3048 case cpu_to_be16(XFS_DA_NODE_MAGIC):
3049 case cpu_to_be16(XFS_DA3_NODE_MAGIC):
3050 error = xfs_attr3_node_inactive(trans, dp, bp, 1);
3051 break;
3052 case cpu_to_be16(XFS_ATTR_LEAF_MAGIC):
3053 case cpu_to_be16(XFS_ATTR3_LEAF_MAGIC):
3054 error = xfs_attr3_leaf_inactive(trans, dp, bp);
3055 break;
3056 default:
3057 error = XFS_ERROR(EIO);
3058 xfs_trans_brelse(*trans, bp);
3059 break;
3060 }
3061 if (error)
3062 return error;
3063
3064
3065
3066
3067 error = xfs_da_get_buf(*trans, dp, 0, blkno, &bp, XFS_ATTR_FORK);
3068 if (error)
3069 return error;
3070 xfs_trans_binval(*trans, bp);
3071
3072
3073
3074 error = xfs_trans_roll(trans, dp);
3075
3076 return error;
3077}
3078
3079
3080
3081
3082
3083STATIC int
3084xfs_attr3_node_inactive(
3085 struct xfs_trans **trans,
3086 struct xfs_inode *dp,
3087 struct xfs_buf *bp,
3088 int level)
3089{
3090 xfs_da_blkinfo_t *info;
3091 xfs_da_intnode_t *node;
3092 xfs_dablk_t child_fsb;
3093 xfs_daddr_t parent_blkno, child_blkno;
3094 int error, i;
3095 struct xfs_buf *child_bp;
3096 struct xfs_da_node_entry *btree;
3097 struct xfs_da3_icnode_hdr ichdr;
3098
3099
3100
3101
3102 if (level > XFS_DA_NODE_MAXDEPTH) {
3103 xfs_trans_brelse(*trans, bp);
3104 return XFS_ERROR(EIO);
3105 }
3106
3107 node = bp->b_addr;
3108 xfs_da3_node_hdr_from_disk(&ichdr, node);
3109 parent_blkno = bp->b_bn;
3110 if (!ichdr.count) {
3111 xfs_trans_brelse(*trans, bp);
3112 return 0;
3113 }
3114 btree = xfs_da3_node_tree_p(node);
3115 child_fsb = be32_to_cpu(btree[0].before);
3116 xfs_trans_brelse(*trans, bp);
3117
3118
3119
3120
3121
3122
3123 for (i = 0; i < ichdr.count; i++) {
3124
3125
3126
3127
3128
3129
3130 error = xfs_da3_node_read(*trans, dp, child_fsb, -2, &child_bp,
3131 XFS_ATTR_FORK);
3132 if (error)
3133 return(error);
3134 if (child_bp) {
3135
3136 child_blkno = XFS_BUF_ADDR(child_bp);
3137
3138
3139
3140
3141 info = child_bp->b_addr;
3142 switch (info->magic) {
3143 case cpu_to_be16(XFS_DA_NODE_MAGIC):
3144 case cpu_to_be16(XFS_DA3_NODE_MAGIC):
3145 error = xfs_attr3_node_inactive(trans, dp,
3146 child_bp, level + 1);
3147 break;
3148 case cpu_to_be16(XFS_ATTR_LEAF_MAGIC):
3149 case cpu_to_be16(XFS_ATTR3_LEAF_MAGIC):
3150 error = xfs_attr3_leaf_inactive(trans, dp,
3151 child_bp);
3152 break;
3153 default:
3154 error = XFS_ERROR(EIO);
3155 xfs_trans_brelse(*trans, child_bp);
3156 break;
3157 }
3158 if (error)
3159 return error;
3160
3161
3162
3163
3164
3165 error = xfs_da_get_buf(*trans, dp, 0, child_blkno,
3166 &child_bp, XFS_ATTR_FORK);
3167 if (error)
3168 return error;
3169 xfs_trans_binval(*trans, child_bp);
3170 }
3171
3172
3173
3174
3175
3176 if (i + 1 < ichdr.count) {
3177 error = xfs_da3_node_read(*trans, dp, 0, parent_blkno,
3178 &bp, XFS_ATTR_FORK);
3179 if (error)
3180 return error;
3181 child_fsb = be32_to_cpu(btree[i + 1].before);
3182 xfs_trans_brelse(*trans, bp);
3183 }
3184
3185
3186
3187 error = xfs_trans_roll(trans, dp);
3188 if (error)
3189 return error;
3190 }
3191
3192 return 0;
3193}
3194
3195
3196
3197
3198
3199
3200
3201STATIC int
3202xfs_attr3_leaf_inactive(
3203 struct xfs_trans **trans,
3204 struct xfs_inode *dp,
3205 struct xfs_buf *bp)
3206{
3207 struct xfs_attr_leafblock *leaf;
3208 struct xfs_attr3_icleaf_hdr ichdr;
3209 struct xfs_attr_leaf_entry *entry;
3210 struct xfs_attr_leaf_name_remote *name_rmt;
3211 struct xfs_attr_inactive_list *list;
3212 struct xfs_attr_inactive_list *lp;
3213 int error;
3214 int count;
3215 int size;
3216 int tmp;
3217 int i;
3218
3219 leaf = bp->b_addr;
3220 xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
3221
3222
3223
3224
3225 count = 0;
3226 entry = xfs_attr3_leaf_entryp(leaf);
3227 for (i = 0; i < ichdr.count; entry++, i++) {
3228 if (be16_to_cpu(entry->nameidx) &&
3229 ((entry->flags & XFS_ATTR_LOCAL) == 0)) {
3230 name_rmt = xfs_attr3_leaf_name_remote(leaf, i);
3231 if (name_rmt->valueblk)
3232 count++;
3233 }
3234 }
3235
3236
3237
3238
3239 if (count == 0) {
3240 xfs_trans_brelse(*trans, bp);
3241 return 0;
3242 }
3243
3244
3245
3246
3247 size = count * sizeof(xfs_attr_inactive_list_t);
3248 list = kmem_alloc(size, KM_SLEEP);
3249
3250
3251
3252
3253 lp = list;
3254 entry = xfs_attr3_leaf_entryp(leaf);
3255 for (i = 0; i < ichdr.count; entry++, i++) {
3256 if (be16_to_cpu(entry->nameidx) &&
3257 ((entry->flags & XFS_ATTR_LOCAL) == 0)) {
3258 name_rmt = xfs_attr3_leaf_name_remote(leaf, i);
3259 if (name_rmt->valueblk) {
3260 lp->valueblk = be32_to_cpu(name_rmt->valueblk);
3261 lp->valuelen = xfs_attr3_rmt_blocks(dp->i_mount,
3262 be32_to_cpu(name_rmt->valuelen));
3263 lp++;
3264 }
3265 }
3266 }
3267 xfs_trans_brelse(*trans, bp);
3268
3269
3270
3271
3272 error = 0;
3273 for (lp = list, i = 0; i < count; i++, lp++) {
3274 tmp = xfs_attr3_leaf_freextent(trans, dp,
3275 lp->valueblk, lp->valuelen);
3276
3277 if (error == 0)
3278 error = tmp;
3279 }
3280
3281 kmem_free(list);
3282 return error;
3283}
3284
3285
3286
3287
3288
3289STATIC int
3290xfs_attr3_leaf_freextent(
3291 struct xfs_trans **trans,
3292 struct xfs_inode *dp,
3293 xfs_dablk_t blkno,
3294 int blkcnt)
3295{
3296 struct xfs_bmbt_irec map;
3297 struct xfs_buf *bp;
3298 xfs_dablk_t tblkno;
3299 xfs_daddr_t dblkno;
3300 int tblkcnt;
3301 int dblkcnt;
3302 int nmap;
3303 int error;
3304
3305
3306
3307
3308
3309 tblkno = blkno;
3310 tblkcnt = blkcnt;
3311 while (tblkcnt > 0) {
3312
3313
3314
3315 nmap = 1;
3316 error = xfs_bmapi_read(dp, (xfs_fileoff_t)tblkno, tblkcnt,
3317 &map, &nmap, XFS_BMAPI_ATTRFORK);
3318 if (error) {
3319 return(error);
3320 }
3321 ASSERT(nmap == 1);
3322 ASSERT(map.br_startblock != DELAYSTARTBLOCK);
3323
3324
3325
3326
3327
3328 if (map.br_startblock != HOLESTARTBLOCK) {
3329
3330 dblkno = XFS_FSB_TO_DADDR(dp->i_mount,
3331 map.br_startblock);
3332 dblkcnt = XFS_FSB_TO_BB(dp->i_mount,
3333 map.br_blockcount);
3334 bp = xfs_trans_get_buf(*trans,
3335 dp->i_mount->m_ddev_targp,
3336 dblkno, dblkcnt, 0);
3337 if (!bp)
3338 return ENOMEM;
3339 xfs_trans_binval(*trans, bp);
3340
3341
3342
3343 error = xfs_trans_roll(trans, dp);
3344 if (error)
3345 return (error);
3346 }
3347
3348 tblkno += map.br_blockcount;
3349 tblkcnt -= map.br_blockcount;
3350 }
3351
3352 return(0);
3353}
3354