aboutsummaryrefslogtreecommitdiff
path: root/sys/gnu/fs/xfs/xfs_dir.c
blob: 9cc702a839a35479b4c875bb806fb0ad72e4892f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
/*
 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_types.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_dir.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
#include "xfs_da_btree.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "xfs_alloc.h"
#include "xfs_btree.h"
#include "xfs_dir_sf.h"
#include "xfs_dir2_sf.h"
#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_bmap.h"
#include "xfs_dir_leaf.h"
#include "xfs_error.h"

/*
 * xfs_dir.c
 *
 * Provide the external interfaces to manage directories.
 */

/*========================================================================
 * Function prototypes for the kernel.
 *========================================================================*/

/*
 * Functions for the dirops interfaces.
 */
static void	xfs_dir_mount(struct xfs_mount *mp);

static int	xfs_dir_isempty(struct xfs_inode *dp);

static int	xfs_dir_init(struct xfs_trans *trans,
			     struct xfs_inode *dir,
			     struct xfs_inode *parent_dir);

static int	xfs_dir_createname(struct xfs_trans *trans,
				   struct xfs_inode *dp,
				   char *name_string,
				   int name_len,
				   xfs_ino_t inode_number,
				   xfs_fsblock_t *firstblock,
				   xfs_bmap_free_t *flist,
				   xfs_extlen_t total);

static int	xfs_dir_lookup(struct xfs_trans *tp,
			       struct xfs_inode *dp,
			       char *name_string,
			       int name_length,
			       xfs_ino_t *inode_number);

static int	xfs_dir_removename(struct xfs_trans *trans,
				   struct xfs_inode *dp,
				   char *name_string,
				   int name_length,
				   xfs_ino_t ino,
				   xfs_fsblock_t *firstblock,
				   xfs_bmap_free_t *flist,
				   xfs_extlen_t total);

static int	xfs_dir_getdents(struct xfs_trans *tp,
				 struct xfs_inode *dp,
				 struct uio *uiop,
				 int *eofp);

static int	xfs_dir_replace(struct xfs_trans *tp,
				struct xfs_inode *dp,
				char *name_string,
				int name_length,
				xfs_ino_t inode_number,
				xfs_fsblock_t *firstblock,
				xfs_bmap_free_t *flist,
				xfs_extlen_t total);

static int	xfs_dir_canenter(struct xfs_trans *tp,
				 struct xfs_inode *dp,
				 char *name_string,
				 int name_length);

static int	xfs_dir_shortform_validate_ondisk(xfs_mount_t *mp,
						  xfs_dinode_t *dip);

xfs_dirops_t xfsv1_dirops = {
	.xd_mount			= xfs_dir_mount,
	.xd_isempty			= xfs_dir_isempty,
	.xd_init			= xfs_dir_init,
	.xd_createname			= xfs_dir_createname,
	.xd_lookup			= xfs_dir_lookup,
	.xd_removename			= xfs_dir_removename,
	.xd_getdents			= xfs_dir_getdents,
	.xd_replace			= xfs_dir_replace,
	.xd_canenter			= xfs_dir_canenter,
	.xd_shortform_validate_ondisk	= xfs_dir_shortform_validate_ondisk,
	.xd_shortform_to_single		= xfs_dir_shortform_to_leaf,
};

/*
 * Internal routines when dirsize == XFS_LBSIZE(mp).
 */
STATIC int xfs_dir_leaf_lookup(xfs_da_args_t *args);
STATIC int xfs_dir_leaf_removename(xfs_da_args_t *args, int *number_entries,
						 int *total_namebytes);
STATIC int xfs_dir_leaf_getdents(xfs_trans_t *trans, xfs_inode_t *dp,
					     uio_t *uio, int *eofp,
					     xfs_dirent_t *dbp,
					     xfs_dir_put_t put);
STATIC int xfs_dir_leaf_replace(xfs_da_args_t *args);

/*
 * Internal routines when dirsize > XFS_LBSIZE(mp).
 */
STATIC int xfs_dir_node_addname(xfs_da_args_t *args);
STATIC int xfs_dir_node_lookup(xfs_da_args_t *args);
STATIC int xfs_dir_node_removename(xfs_da_args_t *args);
STATIC int xfs_dir_node_getdents(xfs_trans_t *trans, xfs_inode_t *dp,
					     uio_t *uio, int *eofp,
					     xfs_dirent_t *dbp,
					     xfs_dir_put_t put);
STATIC int xfs_dir_node_replace(xfs_da_args_t *args);

#if defined(XFS_DIR_TRACE)
ktrace_t *xfs_dir_trace_buf;
#endif


/*========================================================================
 * Overall external interface routines.
 *========================================================================*/

xfs_dahash_t	xfs_dir_hash_dot, xfs_dir_hash_dotdot;

/*
 * One-time startup routine called from xfs_init().
 */
void
xfs_dir_startup(void)
{
	xfs_dir_hash_dot = xfs_da_hashname(".", 1);
	xfs_dir_hash_dotdot = xfs_da_hashname("..", 2);
}

/*
 * Initialize directory-related fields in the mount structure.
 */
static void
xfs_dir_mount(xfs_mount_t *mp)
{
	uint shortcount, leafcount, count;

	mp->m_dirversion = 1;
	if (!(mp->m_flags & XFS_MOUNT_ATTR2)) {
		shortcount = (mp->m_attroffset -
				(uint)sizeof(xfs_dir_sf_hdr_t)) /
				 (uint)sizeof(xfs_dir_sf_entry_t);
		leafcount = (XFS_LBSIZE(mp) -
				(uint)sizeof(xfs_dir_leaf_hdr_t)) /
				 ((uint)sizeof(xfs_dir_leaf_entry_t) +
				  (uint)sizeof(xfs_dir_leaf_name_t));
	} else {
		shortcount = (XFS_BMDR_SPACE_CALC(MINABTPTRS) -
			      (uint)sizeof(xfs_dir_sf_hdr_t)) /
			       (uint)sizeof(xfs_dir_sf_entry_t);
		leafcount = (XFS_LBSIZE(mp) -
			    (uint)sizeof(xfs_dir_leaf_hdr_t)) /
			     ((uint)sizeof(xfs_dir_leaf_entry_t) +
			      (uint)sizeof(xfs_dir_leaf_name_t));
	}
	count = shortcount > leafcount ? shortcount : leafcount;
	mp->m_dircook_elog = xfs_da_log2_roundup(count + 1);
	ASSERT(mp->m_dircook_elog <= mp->m_sb.sb_blocklog);
	mp->m_dir_node_ents = mp->m_attr_node_ents =
		(XFS_LBSIZE(mp) - (uint)sizeof(xfs_da_node_hdr_t)) /
		(uint)sizeof(xfs_da_node_entry_t);
	mp->m_dir_magicpct = (XFS_LBSIZE(mp) * 37) / 100;
	mp->m_dirblksize = mp->m_sb.sb_blocksize;
	mp->m_dirblkfsbs = 1;
}

/*
 * Return 1 if directory contains only "." and "..".
 */
static int
xfs_dir_isempty(xfs_inode_t *dp)
{
	xfs_dir_sf_hdr_t *hdr;

	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
	if (dp->i_d.di_size == 0)
		return(1);
	if (dp->i_d.di_size > XFS_IFORK_DSIZE(dp))
		return(0);
	hdr = (xfs_dir_sf_hdr_t *)dp->i_df.if_u1.if_data;
	return(hdr->count == 0);
}

/*
 * Initialize a directory with its "." and ".." entries.
 */
static int
xfs_dir_init(xfs_trans_t *trans, xfs_inode_t *dir, xfs_inode_t *parent_dir)
{
	xfs_da_args_t args;
	int error;

	memset((char *)&args, 0, sizeof(args));
	args.dp = dir;
	args.trans = trans;

	ASSERT((dir->i_d.di_mode & S_IFMT) == S_IFDIR);
	if ((error = xfs_dir_ino_validate(trans->t_mountp, parent_dir->i_ino)))
		return error;

	return(xfs_dir_shortform_create(&args, parent_dir->i_ino));
}

/*
 * Generic handler routine to add a name to a directory.
 * Transitions directory from shortform to Btree as necessary.
 */
static int							/* error */
xfs_dir_createname(xfs_trans_t *trans, xfs_inode_t *dp, char *name,
		   int namelen, xfs_ino_t inum, xfs_fsblock_t *firstblock,
		   xfs_bmap_free_t *flist, xfs_extlen_t total)
{
	xfs_da_args_t args;
	int retval, newsize, done;

	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);

	if ((retval = xfs_dir_ino_validate(trans->t_mountp, inum)))
		return (retval);

	XFS_STATS_INC(xs_dir_create);
	/*
	 * Fill in the arg structure for this request.
	 */
	args.name = name;
	args.namelen = namelen;
	args.hashval = xfs_da_hashname(name, namelen);
	args.inumber = inum;
	args.dp = dp;
	args.firstblock = firstblock;
	args.flist = flist;
	args.total = total;
	args.whichfork = XFS_DATA_FORK;
	args.trans = trans;
	args.justcheck = 0;
	args.addname = args.oknoent = 1;

	/*
	 * Decide on what work routines to call based on the inode size.
	 */
	done = 0;
	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
		newsize = XFS_DIR_SF_ENTSIZE_BYNAME(args.namelen);
		if ((dp->i_d.di_size + newsize) <= XFS_IFORK_DSIZE(dp)) {
			retval = xfs_dir_shortform_addname(&args);
			done = 1;
		} else {
			if (total == 0)
				return XFS_ERROR(ENOSPC);
			retval = xfs_dir_shortform_to_leaf(&args);
			done = retval != 0;
		}
	}
	if (!done && xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
		retval = xfs_dir_leaf_addname(&args);
		done = retval != ENOSPC;
		if (!done) {
			if (total == 0)
				return XFS_ERROR(ENOSPC);
			retval = xfs_dir_leaf_to_node(&args);
			done = retval != 0;
		}
	}
	if (!done) {
		retval = xfs_dir_node_addname(&args);
	}
	return(retval);
}

/*
 * Generic handler routine to check if a name can be added to a directory,
 * without adding any blocks to the directory.
 */
static int							/* error */
xfs_dir_canenter(xfs_trans_t *trans, xfs_inode_t *dp, char *name, int namelen)
{
	xfs_da_args_t args;
	int retval, newsize;

	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
	/*
	 * Fill in the arg structure for this request.
	 */
	args.name = name;
	args.namelen = namelen;
	args.hashval = xfs_da_hashname(name, namelen);
	args.inumber = 0;
	args.dp = dp;
	args.firstblock = NULL;
	args.flist = NULL;
	args.total = 0;
	args.whichfork = XFS_DATA_FORK;
	args.trans = trans;
	args.justcheck = args.addname = args.oknoent = 1;

	/*
	 * Decide on what work routines to call based on the inode size.
	 */
	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
		newsize = XFS_DIR_SF_ENTSIZE_BYNAME(args.namelen);
		if ((dp->i_d.di_size + newsize) <= XFS_IFORK_DSIZE(dp))
			retval = 0;
		else
			retval = XFS_ERROR(ENOSPC);
	} else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
		retval = xfs_dir_leaf_addname(&args);
	} else {
		retval = xfs_dir_node_addname(&args);
	}
	return(retval);
}

/*
 * Generic handler routine to remove a name from a directory.
 * Transitions directory from Btree to shortform as necessary.
 */
static int							/* error */
xfs_dir_removename(xfs_trans_t *trans, xfs_inode_t *dp, char *name,
		   int namelen, xfs_ino_t ino, xfs_fsblock_t *firstblock,
		   xfs_bmap_free_t *flist, xfs_extlen_t total)
{
	xfs_da_args_t args;
	int count, totallen, newsize, retval;

	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
	XFS_STATS_INC(xs_dir_remove);
	/*
	 * Fill in the arg structure for this request.
	 */
	args.name = name;
	args.namelen = namelen;
	args.hashval = xfs_da_hashname(name, namelen);
	args.inumber = ino;
	args.dp = dp;
	args.firstblock = firstblock;
	args.flist = flist;
	args.total = total;
	args.whichfork = XFS_DATA_FORK;
	args.trans = trans;
	args.justcheck = args.addname = args.oknoent = 0;

	/*
	 * Decide on what work routines to call based on the inode size.
	 */
	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
		retval = xfs_dir_shortform_removename(&args);
	} else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
		retval = xfs_dir_leaf_removename(&args, &count, &totallen);
		if (retval == 0) {
			newsize = XFS_DIR_SF_ALLFIT(count, totallen);
			if (newsize <= XFS_IFORK_DSIZE(dp)) {
				retval = xfs_dir_leaf_to_shortform(&args);
			}
		}
	} else {
		retval = xfs_dir_node_removename(&args);
	}
	return(retval);
}

static int							/* error */
xfs_dir_lookup(xfs_trans_t *trans, xfs_inode_t *dp, char *name, int namelen,
				   xfs_ino_t *inum)
{
	xfs_da_args_t args;
	int retval;

	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);

	XFS_STATS_INC(xs_dir_lookup);
	/*
	 * Fill in the arg structure for this request.
	 */
	args.name = name;
	args.namelen = namelen;
	args.hashval = xfs_da_hashname(name, namelen);
	args.inumber = 0;
	args.dp = dp;
	args.firstblock = NULL;
	args.flist = NULL;
	args.total = 0;
	args.whichfork = XFS_DATA_FORK;
	args.trans = trans;
	args.justcheck = args.addname = 0;
	args.oknoent = 1;

	/*
	 * Decide on what work routines to call based on the inode size.
	 */
	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
		retval = xfs_dir_shortform_lookup(&args);
	} else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
		retval = xfs_dir_leaf_lookup(&args);
	} else {
		retval = xfs_dir_node_lookup(&args);
	}
	if (retval == EEXIST)
		retval = 0;
	*inum = args.inumber;
	return(retval);
}

/*
 * Implement readdir.
 */
static int							/* error */
xfs_dir_getdents(xfs_trans_t *trans, xfs_inode_t *dp, uio_t *uio, int *eofp)
{
	xfs_dirent_t *dbp;
	int  alignment, retval;
	xfs_dir_put_t put;

	XFS_STATS_INC(xs_dir_getdents);
	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);

	/*
	 * If our caller has given us a single contiguous memory buffer,
	 * just work directly within that buffer.  If it's in user memory,
	 * lock it down first.
	 */
	alignment = sizeof(xfs_off_t) - 1;
	if ((uio->uio_iovcnt == 1) &&
	    (((__psint_t)uio->uio_iov[0].iov_base & alignment) == 0) &&
	    ((uio->uio_iov[0].iov_len & alignment) == 0)) {
		dbp = NULL;
		put = xfs_dir_put_dirent64_direct;
	} else {
		dbp = kmem_alloc(sizeof(*dbp) + MAXNAMELEN, KM_SLEEP);
		put = xfs_dir_put_dirent64_uio;
	}

	/*
	 * Decide on what work routines to call based on the inode size.
	 */
	*eofp = 0;

	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
		retval = xfs_dir_shortform_getdents(dp, uio, eofp, dbp, put);
	} else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
		retval = xfs_dir_leaf_getdents(trans, dp, uio, eofp, dbp, put);
	} else {
		retval = xfs_dir_node_getdents(trans, dp, uio, eofp, dbp, put);
	}
	if (dbp != NULL)
		kmem_free(dbp, sizeof(*dbp) + MAXNAMELEN);

	return(retval);
}

static int							/* error */
xfs_dir_replace(xfs_trans_t *trans, xfs_inode_t *dp, char *name, int namelen,
				    xfs_ino_t inum, xfs_fsblock_t *firstblock,
				    xfs_bmap_free_t *flist, xfs_extlen_t total)
{
	xfs_da_args_t args;
	int retval;

	ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);

	if ((retval = xfs_dir_ino_validate(trans->t_mountp, inum)))
		return retval;

	/*
	 * Fill in the arg structure for this request.
	 */
	args.name = name;
	args.namelen = namelen;
	args.hashval = xfs_da_hashname(name, namelen);
	args.inumber = inum;
	args.dp = dp;
	args.firstblock = firstblock;
	args.flist = flist;
	args.total = total;
	args.whichfork = XFS_DATA_FORK;
	args.trans = trans;
	args.justcheck = args.addname = args.oknoent = 0;

	/*
	 * Decide on what work routines to call based on the inode size.
	 */
	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
		retval = xfs_dir_shortform_replace(&args);
	} else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
		retval = xfs_dir_leaf_replace(&args);
	} else {
		retval = xfs_dir_node_replace(&args);
	}

	return(retval);
}

static int
xfs_dir_shortform_validate_ondisk(xfs_mount_t *mp, xfs_dinode_t *dp)
{
	xfs_ino_t		ino;
	int			namelen_sum;
	int			count;
	xfs_dir_shortform_t	*sf;
	xfs_dir_sf_entry_t	*sfe;
	int			i;



	if ((INT_GET(dp->di_core.di_mode, ARCH_CONVERT) & S_IFMT) != S_IFDIR) {
		return 0;
	}
	if (INT_GET(dp->di_core.di_format, ARCH_CONVERT) != XFS_DINODE_FMT_LOCAL) {
		return 0;
	}
	if (INT_GET(dp->di_core.di_size, ARCH_CONVERT) < sizeof(sf->hdr)) {
		xfs_fs_cmn_err(CE_WARN, mp, "Invalid shortform size: dp 0x%p",
			dp);
		return 1;
	}
	sf = (xfs_dir_shortform_t *)(&dp->di_u.di_dirsf);
	ino = XFS_GET_DIR_INO8(sf->hdr.parent);
	if (xfs_dir_ino_validate(mp, ino))
		return 1;

	count =	sf->hdr.count;
	if ((count < 0) || ((count * 10) > XFS_LITINO(mp))) {
		xfs_fs_cmn_err(CE_WARN, mp,
			"Invalid shortform count: dp 0x%p", dp);
		return(1);
	}

	if (count == 0) {
		return 0;
	}

	namelen_sum = 0;
	sfe = &sf->list[0];
	for (i = sf->hdr.count - 1; i >= 0; i--) {
		ino = XFS_GET_DIR_INO8(sfe->inumber);
		xfs_dir_ino_validate(mp, ino);
		if (sfe->namelen >= XFS_LITINO(mp)) {
			xfs_fs_cmn_err(CE_WARN, mp,
				"Invalid shortform namelen: dp 0x%p", dp);
			return 1;
		}
		namelen_sum += sfe->namelen;
		sfe = XFS_DIR_SF_NEXTENTRY(sfe);
	}
	if (namelen_sum >= XFS_LITINO(mp)) {
		xfs_fs_cmn_err(CE_WARN, mp,
			"Invalid shortform namelen: dp 0x%p", dp);
		return 1;
	}

	return 0;
}

/*========================================================================
 * External routines when dirsize == XFS_LBSIZE(dp->i_mount).
 *========================================================================*/

/*
 * Add a name to the leaf directory structure
 * This is the external routine.
 */
int
xfs_dir_leaf_addname(xfs_da_args_t *args)
{
	int index, retval;
	xfs_dabuf_t *bp;

	retval = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
					      XFS_DATA_FORK);
	if (retval)
		return(retval);
	ASSERT(bp != NULL);

	retval = xfs_dir_leaf_lookup_int(bp, args, &index);
	if (retval == ENOENT)
		retval = xfs_dir_leaf_add(bp, args, index);
	xfs_da_buf_done(bp);
	return(retval);
}

/*
 * Remove a name from the leaf directory structure
 * This is the external routine.
 */
STATIC int
xfs_dir_leaf_removename(xfs_da_args_t *args, int *count, int *totallen)
{
	xfs_dir_leafblock_t *leaf;
	int index, retval;
	xfs_dabuf_t *bp;

	retval = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
					      XFS_DATA_FORK);
	if (retval)
		return(retval);
	ASSERT(bp != NULL);
	leaf = bp->data;
	ASSERT(be16_to_cpu(leaf->hdr.info.magic) == XFS_DIR_LEAF_MAGIC);
	retval = xfs_dir_leaf_lookup_int(bp, args, &index);
	if (retval == EEXIST) {
		(void)xfs_dir_leaf_remove(args->trans, bp, index);
		*count = INT_GET(leaf->hdr.count, ARCH_CONVERT);
		*totallen = INT_GET(leaf->hdr.namebytes, ARCH_CONVERT);
		retval = 0;
	}
	xfs_da_buf_done(bp);
	return(retval);
}

/*
 * Look up a name in a leaf directory structure.
 * This is the external routine.
 */
STATIC int
xfs_dir_leaf_lookup(xfs_da_args_t *args)
{
	int index, retval;
	xfs_dabuf_t *bp;

	retval = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
					      XFS_DATA_FORK);
	if (retval)
		return(retval);
	ASSERT(bp != NULL);
	retval = xfs_dir_leaf_lookup_int(bp, args, &index);
	xfs_da_brelse(args->trans, bp);
	return(retval);
}

/*
 * Copy out directory entries for getdents(), for leaf directories.
 */
STATIC int
xfs_dir_leaf_getdents(xfs_trans_t *trans, xfs_inode_t *dp, uio_t *uio,
				  int *eofp, xfs_dirent_t *dbp, xfs_dir_put_t put)
{
	xfs_dabuf_t *bp;
	int retval, eob;

	retval = xfs_da_read_buf(dp->i_transp, dp, 0, -1, &bp, XFS_DATA_FORK);
	if (retval)
		return(retval);
	ASSERT(bp != NULL);
	retval = xfs_dir_leaf_getdents_int(bp, dp, 0, uio, &eob, dbp, put, -1);
	xfs_da_brelse(trans, bp);
	*eofp = (eob == 0);
	return(retval);
}

/*
 * Look up a name in a leaf directory structure, replace the inode number.
 * This is the external routine.
 */
STATIC int
xfs_dir_leaf_replace(xfs_da_args_t *args)
{
	int index, retval;
	xfs_dabuf_t *bp;
	xfs_ino_t inum;
	xfs_dir_leafblock_t *leaf;
	xfs_dir_leaf_entry_t *entry;
	xfs_dir_leaf_name_t *namest;

	inum = args->inumber;
	retval = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
					      XFS_DATA_FORK);
	if (retval)
		return(retval);
	ASSERT(bp != NULL);
	retval = xfs_dir_leaf_lookup_int(bp, args, &index);
	if (retval == EEXIST) {
		leaf = bp->data;
		entry = &leaf->entries[index];
		namest = XFS_DIR_LEAF_NAMESTRUCT(leaf, INT_GET(entry->nameidx, ARCH_CONVERT));
		/* XXX - replace assert? */
		XFS_DIR_SF_PUT_DIRINO(&inum, &namest->inumber);
		xfs_da_log_buf(args->trans, bp,
		    XFS_DA_LOGRANGE(leaf, namest, sizeof(namest->inumber)));
		xfs_da_buf_done(bp);
		retval = 0;
	} else
		xfs_da_brelse(args->trans, bp);
	return(retval);
}


/*========================================================================
 * External routines when dirsize > XFS_LBSIZE(mp).
 *========================================================================*/

/*
 * Add a name to a Btree-format directory.
 *
 * This will involve walking down the Btree, and may involve splitting
 * leaf nodes and even splitting intermediate nodes up to and including
 * the root node (a special case of an intermediate node).
 */
STATIC int
xfs_dir_node_addname(xfs_da_args_t *args)
{
	xfs_da_state_t *state;
	xfs_da_state_blk_t *blk;
	int retval, error;

	/*
	 * Fill in bucket of arguments/results/context to carry around.
	 */
	state = xfs_da_state_alloc();
	state->args = args;
	state->mp = args->dp->i_mount;
	state->blocksize = state->mp->m_sb.sb_blocksize;
	state->node_ents = state->mp->m_dir_node_ents;

	/*
	 * Search to see if name already exists, and get back a pointer
	 * to where it should go.
	 */
	error = xfs_da_node_lookup_int(state, &retval);
	if (error)
		retval = error;
	if (retval != ENOENT)
		goto error;
	blk = &state->path.blk[ state->path.active-1 ];
	ASSERT(blk->magic == XFS_DIR_LEAF_MAGIC);
	retval = xfs_dir_leaf_add(blk->bp, args, blk->index);
	if (retval == 0) {
		/*
		 * Addition succeeded, update Btree hashvals.
		 */
		if (!args->justcheck)
			xfs_da_fixhashpath(state, &state->path);
	} else {
		/*
		 * Addition failed, split as many Btree elements as required.
		 */
		if (args->total == 0) {
			ASSERT(retval == ENOSPC);
			goto error;
		}
		retval = xfs_da_split(state);
	}
error:
	xfs_da_state_free(state);

	return(retval);
}

/*
 * Remove a name from a B-tree directory.
 *
 * This will involve walking down the Btree, and may involve joining
 * leaf nodes and even joining intermediate nodes up to and including
 * the root node (a special case of an intermediate node).
 */
STATIC int
xfs_dir_node_removename(xfs_da_args_t *args)
{
	xfs_da_state_t *state;
	xfs_da_state_blk_t *blk;
	int retval, error;

	state = xfs_da_state_alloc();
	state->args = args;
	state->mp = args->dp->i_mount;
	state->blocksize = state->mp->m_sb.sb_blocksize;
	state->node_ents = state->mp->m_dir_node_ents;

	/*
	 * Search to see if name exists, and get back a pointer to it.
	 */
	error = xfs_da_node_lookup_int(state, &retval);
	if (error)
		retval = error;
	if (retval != EEXIST) {
		xfs_da_state_free(state);
		return(retval);
	}

	/*
	 * Remove the name and update the hashvals in the tree.
	 */
	blk = &state->path.blk[ state->path.active-1 ];
	ASSERT(blk->magic == XFS_DIR_LEAF_MAGIC);
	retval = xfs_dir_leaf_remove(args->trans, blk->bp, blk->index);
	xfs_da_fixhashpath(state, &state->path);

	/*
	 * Check to see if the tree needs to be collapsed.
	 */
	error = 0;
	if (retval) {
		error = xfs_da_join(state);
	}

	xfs_da_state_free(state);
	if (error)
		return(error);
	return(0);
}

/*
 * Look up a filename in a int directory.
 * Use an internal routine to actually do all the work.
 */
STATIC int
xfs_dir_node_lookup(xfs_da_args_t *args)
{
	xfs_da_state_t *state;
	int retval, error, i;

	state = xfs_da_state_alloc();
	state->args = args;
	state->mp = args->dp->i_mount;
	state->blocksize = state->mp->m_sb.sb_blocksize;
	state->node_ents = state->mp->m_dir_node_ents;

	/*
	 * Search to see if name exists,
	 * and get back a pointer to it.
	 */
	error = xfs_da_node_lookup_int(state, &retval);
	if (error) {
		retval = error;
	}

	/*
	 * If not in a transaction, we have to release all the buffers.
	 */
	for (i = 0; i < state->path.active; i++) {
		xfs_da_brelse(args->trans, state->path.blk[i].bp);
		state->path.blk[i].bp = NULL;
	}

	xfs_da_state_free(state);
	return(retval);
}

STATIC int
xfs_dir_node_getdents(xfs_trans_t *trans, xfs_inode_t *dp, uio_t *uio,
				  int *eofp, xfs_dirent_t *dbp, xfs_dir_put_t put)
{
	xfs_da_intnode_t *node;
	xfs_da_node_entry_t *btree;
	xfs_dir_leafblock_t *leaf = NULL;
	xfs_dablk_t bno, nextbno;
	xfs_dahash_t cookhash;
	xfs_mount_t *mp;
	int error, eob, i;
	xfs_dabuf_t *bp;
	xfs_daddr_t nextda;

	/*
	 * Pick up our context.
	 */
	mp = dp->i_mount;
	bp = NULL;
	bno = XFS_DA_COOKIE_BNO(mp, uio->uio_offset);
	cookhash = XFS_DA_COOKIE_HASH(mp, uio->uio_offset);

	xfs_dir_trace_g_du("node: start", dp, uio);

	/*
	 * Re-find our place, even if we're confused about what our place is.
	 *
	 * First we check the block number from the magic cookie, it is a
	 * cache of where we ended last time.  If we find a leaf block, and
	 * the starting hashval in that block is less than our desired
	 * hashval, then we run with it.
	 */
	if (bno > 0) {
		error = xfs_da_read_buf(trans, dp, bno, -2, &bp, XFS_DATA_FORK);
		if ((error != 0) && (error != EFSCORRUPTED))
			return(error);
		if (bp)
			leaf = bp->data;
		if (bp && be16_to_cpu(leaf->hdr.info.magic) != XFS_DIR_LEAF_MAGIC) {
			xfs_dir_trace_g_dub("node: block not a leaf",
						   dp, uio, bno);
			xfs_da_brelse(trans, bp);
			bp = NULL;
		}
		if (bp && INT_GET(leaf->entries[0].hashval, ARCH_CONVERT) > cookhash) {
			xfs_dir_trace_g_dub("node: leaf hash too large",
						   dp, uio, bno);
			xfs_da_brelse(trans, bp);
			bp = NULL;
		}
		if (bp &&
		    cookhash > INT_GET(leaf->entries[INT_GET(leaf->hdr.count, ARCH_CONVERT) - 1].hashval, ARCH_CONVERT)) {
			xfs_dir_trace_g_dub("node: leaf hash too small",
						   dp, uio, bno);
			xfs_da_brelse(trans, bp);
			bp = NULL;
		}
	}

	/*
	 * If we did not find a leaf block from the blockno in the cookie,
	 * or we there was no blockno in the cookie (eg: first time thru),
	 * the we start at the top of the Btree and re-find our hashval.
	 */
	if (bp == NULL) {
		xfs_dir_trace_g_du("node: start at root" , dp, uio);
		bno = 0;
		for (;;) {
			error = xfs_da_read_buf(trans, dp, bno, -1, &bp,
						       XFS_DATA_FORK);
			if (error)
				return(error);
			if (bp == NULL)
				return(XFS_ERROR(EFSCORRUPTED));
			node = bp->data;
			if (be16_to_cpu(node->hdr.info.magic) != XFS_DA_NODE_MAGIC)
				break;
			btree = &node->btree[0];
			xfs_dir_trace_g_dun("node: node detail", dp, uio, node);
			for (i = 0; i < be16_to_cpu(node->hdr.count); btree++, i++) {
				if (be32_to_cpu(btree->hashval) >= cookhash) {
					bno = be32_to_cpu(btree->before);
					break;
				}
			}
			if (i == be16_to_cpu(node->hdr.count)) {
				xfs_da_brelse(trans, bp);
				xfs_dir_trace_g_du("node: hash beyond EOF",
							  dp, uio);
				uio->uio_offset = XFS_DA_MAKE_COOKIE(mp, 0, 0,
							     XFS_DA_MAXHASH);
				*eofp = 1;
				return(0);
			}
			xfs_dir_trace_g_dub("node: going to block",
						   dp, uio, bno);
			xfs_da_brelse(trans, bp);
		}
	}
	ASSERT(cookhash != XFS_DA_MAXHASH);

	/*
	 * We've dropped down to the (first) leaf block that contains the
	 * hashval we are interested in.  Continue rolling upward thru the
	 * leaf blocks until we fill up our buffer.
	 */
	for (;;) {
		leaf = bp->data;
		if (unlikely(be16_to_cpu(leaf->hdr.info.magic) != XFS_DIR_LEAF_MAGIC)) {
			xfs_dir_trace_g_dul("node: not a leaf", dp, uio, leaf);
			xfs_da_brelse(trans, bp);
			XFS_CORRUPTION_ERROR("xfs_dir_node_getdents(1)",
					     XFS_ERRLEVEL_LOW, mp, leaf);
			return XFS_ERROR(EFSCORRUPTED);
		}
		xfs_dir_trace_g_dul("node: leaf detail", dp, uio, leaf);
		if ((nextbno = be32_to_cpu(leaf->hdr.info.forw))) {
			nextda = xfs_da_reada_buf(trans, dp, nextbno,
						  XFS_DATA_FORK);
		} else
			nextda = -1;
		error = xfs_dir_leaf_getdents_int(bp, dp, bno, uio, &eob, dbp,
						  put, nextda);
		xfs_da_brelse(trans, bp);
		bno = nextbno;
		if (eob) {
			xfs_dir_trace_g_dub("node: E-O-B", dp, uio, bno);
			*eofp = 0;
			return(error);
		}
		if (bno == 0)
			break;
		error = xfs_da_read_buf(trans, dp, bno, nextda, &bp,
					XFS_DATA_FORK);
		if (error)
			return(error);
		if (unlikely(bp == NULL)) {
			XFS_ERROR_REPORT("xfs_dir_node_getdents(2)",
					 XFS_ERRLEVEL_LOW, mp);
			return(XFS_ERROR(EFSCORRUPTED));
		}
	}
	*eofp = 1;
	xfs_dir_trace_g_du("node: E-O-F", dp, uio);
	return(0);
}

/*
 * Look up a filename in an int directory, replace the inode number.
 * Use an internal routine to actually do the lookup.
 */
STATIC int
xfs_dir_node_replace(xfs_da_args_t *args)
{
	xfs_da_state_t *state;
	xfs_da_state_blk_t *blk;
	xfs_dir_leafblock_t *leaf;
	xfs_dir_leaf_entry_t *entry;
	xfs_dir_leaf_name_t *namest;
	xfs_ino_t inum;
	int retval, error, i;
	xfs_dabuf_t *bp;

	state = xfs_da_state_alloc();
	state->args = args;
	state->mp = args->dp->i_mount;
	state->blocksize = state->mp->m_sb.sb_blocksize;
	state->node_ents = state->mp->m_dir_node_ents;
	inum = args->inumber;

	/*
	 * Search to see if name exists,
	 * and get back a pointer to it.
	 */
	error = xfs_da_node_lookup_int(state, &retval);
	if (error) {
		retval = error;
	}

	if (retval == EEXIST) {
		blk = &state->path.blk[state->path.active - 1];
		ASSERT(blk->magic == XFS_DIR_LEAF_MAGIC);
		bp = blk->bp;
		leaf = bp->data;
		entry = &leaf->entries[blk->index];
		namest = XFS_DIR_LEAF_NAMESTRUCT(leaf, INT_GET(entry->nameidx, ARCH_CONVERT));
		/* XXX - replace assert ? */
		XFS_DIR_SF_PUT_DIRINO(&inum, &namest->inumber);
		xfs_da_log_buf(args->trans, bp,
		    XFS_DA_LOGRANGE(leaf, namest, sizeof(namest->inumber)));
		xfs_da_buf_done(bp);
		blk->bp = NULL;
		retval = 0;
	} else {
		i = state->path.active - 1;
		xfs_da_brelse(args->trans, state->path.blk[i].bp);
		state->path.blk[i].bp = NULL;
	}
	for (i = 0; i < state->path.active - 1; i++) {
		xfs_da_brelse(args->trans, state->path.blk[i].bp);
		state->path.blk[i].bp = NULL;
	}

	xfs_da_state_free(state);
	return(retval);
}

#if defined(XFS_DIR_TRACE)
/*
 * Add a trace buffer entry for an inode and a uio.
 */
void
xfs_dir_trace_g_du(char *where, xfs_inode_t *dp, uio_t *uio)
{
	xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DU, where,
		     (void *)dp, (void *)dp->i_mount,
		     (void *)((unsigned long)(uio->uio_offset >> 32)),
		     (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
		     (void *)(unsigned long)uio->uio_resid,
		     NULL, NULL, NULL, NULL, NULL, NULL, NULL);
}

/*
 * Add a trace buffer entry for an inode and a uio.
 */
void
xfs_dir_trace_g_dub(char *where, xfs_inode_t *dp, uio_t *uio, xfs_dablk_t bno)
{
	xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUB, where,
		     (void *)dp, (void *)dp->i_mount,
		     (void *)((unsigned long)(uio->uio_offset >> 32)),
		     (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
		     (void *)(unsigned long)uio->uio_resid,
		     (void *)(unsigned long)bno,
		     NULL, NULL, NULL, NULL, NULL, NULL);
}

/*
 * Add a trace buffer entry for an inode and a uio.
 */
void
xfs_dir_trace_g_dun(char *where, xfs_inode_t *dp, uio_t *uio,
			xfs_da_intnode_t *node)
{
	int	last = be16_to_cpu(node->hdr.count) - 1;

	xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUN, where,
		     (void *)dp, (void *)dp->i_mount,
		     (void *)((unsigned long)(uio->uio_offset >> 32)),
		     (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
		     (void *)(unsigned long)uio->uio_resid,
		     (void *)(unsigned long)be32_to_cpu(node->hdr.info.forw),
		     (void *)(unsigned long)
			be16_to_cpu(node->hdr.count),
		     (void *)(unsigned long)
			be32_to_cpu(node->btree[0].hashval),
		     (void *)(unsigned long)
			be32_to_cpu(node->btree[last].hashval),
		     NULL, NULL, NULL);
}

/*
 * Add a trace buffer entry for an inode and a uio.
 */
void
xfs_dir_trace_g_dul(char *where, xfs_inode_t *dp, uio_t *uio,
			xfs_dir_leafblock_t *leaf)
{
	int	last = INT_GET(leaf->hdr.count, ARCH_CONVERT) - 1;

	xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUL, where,
		     (void *)dp, (void *)dp->i_mount,
		     (void *)((unsigned long)(uio->uio_offset >> 32)),
		     (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
		     (void *)(unsigned long)uio->uio_resid,
		     (void *)(unsigned long)be32_to_cpu(leaf->hdr.info.forw),
		     (void *)(unsigned long)
			INT_GET(leaf->hdr.count, ARCH_CONVERT),
		     (void *)(unsigned long)
			INT_GET(leaf->entries[0].hashval, ARCH_CONVERT),
		     (void *)(unsigned long)
			INT_GET(leaf->entries[last].hashval, ARCH_CONVERT),
		     NULL, NULL, NULL);
}

/*
 * Add a trace buffer entry for an inode and a uio.
 */
void
xfs_dir_trace_g_due(char *where, xfs_inode_t *dp, uio_t *uio,
			xfs_dir_leaf_entry_t *entry)
{
	xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUE, where,
		     (void *)dp, (void *)dp->i_mount,
		     (void *)((unsigned long)(uio->uio_offset >> 32)),
		     (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
		     (void *)(unsigned long)uio->uio_resid,
		     (void *)(unsigned long)
			INT_GET(entry->hashval, ARCH_CONVERT),
		     NULL, NULL, NULL, NULL, NULL, NULL);
}

/*
 * Add a trace buffer entry for an inode and a uio.
 */
void
xfs_dir_trace_g_duc(char *where, xfs_inode_t *dp, uio_t *uio, xfs_off_t cookie)
{
	xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUC, where,
		     (void *)dp, (void *)dp->i_mount,
		     (void *)((unsigned long)(uio->uio_offset >> 32)),
		     (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
		     (void *)(unsigned long)uio->uio_resid,
		     (void *)((unsigned long)(cookie >> 32)),
		     (void *)((unsigned long)(cookie & 0xFFFFFFFF)),
		     NULL, NULL, NULL, NULL, NULL);
}

/*
 * Add a trace buffer entry for the arguments given to the routine,
 * generic form.
 */
void
xfs_dir_trace_enter(int type, char *where,
			void * a0, void * a1,
			void * a2, void * a3,
			void * a4, void * a5,
			void * a6, void * a7,
			void * a8, void * a9,
			void * a10, void * a11)
{
	ASSERT(xfs_dir_trace_buf);
	ktrace_enter(xfs_dir_trace_buf, (void *)(unsigned long)type,
					(void *)where,
					(void *)a0, (void *)a1, (void *)a2,
					(void *)a3, (void *)a4, (void *)a5,
					(void *)a6, (void *)a7, (void *)a8,
					(void *)a9, (void *)a10, (void *)a11,
					NULL, NULL);
}
#endif	/* XFS_DIR_TRACE */