aboutsummaryrefslogtreecommitdiff
path: root/sbin/fsck_ffs/inode.c
blob: a914be8b87a55c614b5cdd348cca9ff55c0c9cce (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
/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1980, 1986, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if 0
#ifndef lint
static const char sccsid[] = "@(#)inode.c	8.8 (Berkeley) 4/28/95";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/stdint.h>
#include <sys/sysctl.h>

#include <ufs/ufs/dinode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ffs/fs.h>

#include <err.h>
#include <pwd.h>
#include <string.h>
#include <time.h>
#include <libufs.h>

#include "fsck.h"

static ino_t startinum;

static int iblock(struct inodesc *, long ilevel, off_t isize, int type);

int
ckinode(union dinode *dp, struct inodesc *idesc)
{
	off_t remsize, sizepb;
	int i, offset, ret;
	union dinode dino;
	ufs2_daddr_t ndb;
	mode_t mode;
	char pathbuf[MAXPATHLEN + 1];

	if (idesc->id_fix != IGNORE)
		idesc->id_fix = DONTKNOW;
	idesc->id_lbn = -1;
	idesc->id_entryno = 0;
	idesc->id_filesize = DIP(dp, di_size);
	mode = DIP(dp, di_mode) & IFMT;
	if (mode == IFBLK || mode == IFCHR || (mode == IFLNK &&
	    DIP(dp, di_size) < (unsigned)sblock.fs_maxsymlinklen))
		return (KEEPON);
	if (sblock.fs_magic == FS_UFS1_MAGIC)
		dino.dp1 = dp->dp1;
	else
		dino.dp2 = dp->dp2;
	ndb = howmany(DIP(&dino, di_size), sblock.fs_bsize);
	for (i = 0; i < UFS_NDADDR; i++) {
		idesc->id_lbn++;
		if (--ndb == 0 &&
		    (offset = blkoff(&sblock, DIP(&dino, di_size))) != 0)
			idesc->id_numfrags =
				numfrags(&sblock, fragroundup(&sblock, offset));
		else
			idesc->id_numfrags = sblock.fs_frag;
		if (DIP(&dino, di_db[i]) == 0) {
			if (idesc->id_type == DATA && ndb >= 0) {
				/* An empty block in a directory XXX */
				getpathname(pathbuf, idesc->id_number,
						idesc->id_number);
				pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
					pathbuf);
				if (reply("ADJUST LENGTH") == 1) {
					dp = ginode(idesc->id_number);
					DIP_SET(dp, di_size,
					    i * sblock.fs_bsize);
					printf(
					    "YOU MUST RERUN FSCK AFTERWARDS\n");
					rerun = 1;
					inodirty(dp);

				}
			}
			continue;
		}
		idesc->id_blkno = DIP(&dino, di_db[i]);
		if (idesc->id_type != DATA)
			ret = (*idesc->id_func)(idesc);
		else
			ret = dirscan(idesc);
		if (ret & STOP)
			return (ret);
	}
	idesc->id_numfrags = sblock.fs_frag;
	remsize = DIP(&dino, di_size) - sblock.fs_bsize * UFS_NDADDR;
	sizepb = sblock.fs_bsize;
	for (i = 0; i < UFS_NIADDR; i++) {
		sizepb *= NINDIR(&sblock);
		if (DIP(&dino, di_ib[i])) {
			idesc->id_blkno = DIP(&dino, di_ib[i]);
			ret = iblock(idesc, i + 1, remsize, BT_LEVEL1 + i);
			if (ret & STOP)
				return (ret);
		} else {
			idesc->id_lbn += sizepb / sblock.fs_bsize;
			if (idesc->id_type == DATA && remsize > 0) {
				/* An empty block in a directory XXX */
				getpathname(pathbuf, idesc->id_number,
						idesc->id_number);
				pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
					pathbuf);
				if (reply("ADJUST LENGTH") == 1) {
					dp = ginode(idesc->id_number);
					DIP_SET(dp, di_size,
					    DIP(dp, di_size) - remsize);
					remsize = 0;
					printf(
					    "YOU MUST RERUN FSCK AFTERWARDS\n");
					rerun = 1;
					inodirty(dp);
					break;
				}
			}
		}
		remsize -= sizepb;
	}
	return (KEEPON);
}

static int
iblock(struct inodesc *idesc, long ilevel, off_t isize, int type)
{
	struct bufarea *bp;
	int i, n, (*func)(struct inodesc *), nif;
	off_t sizepb;
	char buf[BUFSIZ];
	char pathbuf[MAXPATHLEN + 1];
	union dinode *dp;

	if (idesc->id_type != DATA) {
		func = idesc->id_func;
		if (((n = (*func)(idesc)) & KEEPON) == 0)
			return (n);
	} else
		func = dirscan;
	if (chkrange(idesc->id_blkno, idesc->id_numfrags))
		return (SKIP);
	bp = getdatablk(idesc->id_blkno, sblock.fs_bsize, type);
	ilevel--;
	for (sizepb = sblock.fs_bsize, i = 0; i < ilevel; i++)
		sizepb *= NINDIR(&sblock);
	if (howmany(isize, sizepb) > NINDIR(&sblock))
		nif = NINDIR(&sblock);
	else
		nif = howmany(isize, sizepb);
	if (idesc->id_func == pass1check && nif < NINDIR(&sblock)) {
		for (i = nif; i < NINDIR(&sblock); i++) {
			if (IBLK(bp, i) == 0)
				continue;
			(void)sprintf(buf, "PARTIALLY TRUNCATED INODE I=%lu",
			    (u_long)idesc->id_number);
			if (preen) {
				pfatal("%s", buf);
			} else if (dofix(idesc, buf)) {
				IBLK_SET(bp, i, 0);
				dirty(bp);
			}
		}
		flush(fswritefd, bp);
	}
	for (i = 0; i < nif; i++) {
		if (ilevel == 0)
			idesc->id_lbn++;
		if (IBLK(bp, i)) {
			idesc->id_blkno = IBLK(bp, i);
			if (ilevel == 0)
				n = (*func)(idesc);
			else
				n = iblock(idesc, ilevel, isize, type);
			if (n & STOP) {
				bp->b_flags &= ~B_INUSE;
				return (n);
			}
		} else {
			if (idesc->id_type == DATA && isize > 0) {
				/* An empty block in a directory XXX */
				getpathname(pathbuf, idesc->id_number,
						idesc->id_number);
				pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
					pathbuf);
				if (reply("ADJUST LENGTH") == 1) {
					dp = ginode(idesc->id_number);
					DIP_SET(dp, di_size,
					    DIP(dp, di_size) - isize);
					isize = 0;
					printf(
					    "YOU MUST RERUN FSCK AFTERWARDS\n");
					rerun = 1;
					inodirty(dp);
					bp->b_flags &= ~B_INUSE;
					return(STOP);
				}
			}
		}
		isize -= sizepb;
	}
	bp->b_flags &= ~B_INUSE;
	return (KEEPON);
}

/*
 * Check that a block in a legal block number.
 * Return 0 if in range, 1 if out of range.
 */
int
chkrange(ufs2_daddr_t blk, int cnt)
{
	int c;

	if (cnt <= 0 || blk <= 0 || blk > maxfsblock ||
	    cnt - 1 > maxfsblock - blk)
		return (1);
	if (cnt > sblock.fs_frag ||
	    fragnum(&sblock, blk) + cnt > sblock.fs_frag) {
		if (debug)
			printf("bad size: blk %ld, offset %i, size %d\n",
			    (long)blk, (int)fragnum(&sblock, blk), cnt);
		return (1);
	}
	c = dtog(&sblock, blk);
	if (blk < cgdmin(&sblock, c)) {
		if ((blk + cnt) > cgsblock(&sblock, c)) {
			if (debug) {
				printf("blk %ld < cgdmin %ld;",
				    (long)blk, (long)cgdmin(&sblock, c));
				printf(" blk + cnt %ld > cgsbase %ld\n",
				    (long)(blk + cnt),
				    (long)cgsblock(&sblock, c));
			}
			return (1);
		}
	} else {
		if ((blk + cnt) > cgbase(&sblock, c+1)) {
			if (debug)  {
				printf("blk %ld >= cgdmin %ld;",
				    (long)blk, (long)cgdmin(&sblock, c));
				printf(" blk + cnt %ld > sblock.fs_fpg %ld\n",
				    (long)(blk + cnt), (long)sblock.fs_fpg);
			}
			return (1);
		}
	}
	return (0);
}

/*
 * General purpose interface for reading inodes.
 */
union dinode *
ginode(ino_t inumber)
{
	ufs2_daddr_t iblk;

	if (inumber < UFS_ROOTINO || inumber > maxino)
		errx(EEXIT, "bad inode number %ju to ginode",
		    (uintmax_t)inumber);
	if (startinum == 0 ||
	    inumber < startinum || inumber >= startinum + INOPB(&sblock)) {
		iblk = ino_to_fsba(&sblock, inumber);
		if (pbp != NULL)
			pbp->b_flags &= ~B_INUSE;
		pbp = getdatablk(iblk, sblock.fs_bsize, BT_INODES);
		startinum = rounddown(inumber, INOPB(&sblock));
	}
	if (sblock.fs_magic == FS_UFS1_MAGIC)
		return ((union dinode *)
		    &pbp->b_un.b_dinode1[inumber % INOPB(&sblock)]);
	return ((union dinode *)&pbp->b_un.b_dinode2[inumber % INOPB(&sblock)]);
}

/*
 * Special purpose version of ginode used to optimize first pass
 * over all the inodes in numerical order.
 */
static ino_t nextino, lastinum, lastvalidinum;
static long readcount, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
static struct bufarea inobuf;

union dinode *
getnextinode(ino_t inumber, int rebuildcg)
{
	int j;
	long size;
	mode_t mode;
	ufs2_daddr_t ndb, blk;
	union dinode *dp;
	static caddr_t nextinop;

	if (inumber != nextino++ || inumber > lastvalidinum)
		errx(EEXIT, "bad inode number %ju to nextinode",
		    (uintmax_t)inumber);
	if (inumber >= lastinum) {
		readcount++;
		blk = ino_to_fsba(&sblock, lastinum);
		if (readcount % readpercg == 0) {
			size = partialsize;
			lastinum += partialcnt;
		} else {
			size = inobufsize;
			lastinum += fullcnt;
		}
		/*
		 * If getblk encounters an error, it will already have zeroed
		 * out the buffer, so we do not need to do so here.
		 */
		getblk(&inobuf, blk, size);
		nextinop = inobuf.b_un.b_buf;
	}
	dp = (union dinode *)nextinop;
	if (sblock.fs_magic == FS_UFS1_MAGIC)
		nextinop += sizeof(struct ufs1_dinode);
	else
		nextinop += sizeof(struct ufs2_dinode);
	if (rebuildcg && (char *)dp == inobuf.b_un.b_buf) {
		/*
		 * Try to determine if we have reached the end of the
		 * allocated inodes.
		 */
		mode = DIP(dp, di_mode) & IFMT;
		if (mode == 0) {
			if (memcmp(dp->dp2.di_db, ufs2_zino.di_db,
				UFS_NDADDR * sizeof(ufs2_daddr_t)) ||
			      memcmp(dp->dp2.di_ib, ufs2_zino.di_ib,
				UFS_NIADDR * sizeof(ufs2_daddr_t)) ||
			      dp->dp2.di_mode || dp->dp2.di_size)
				return (NULL);
			return (dp);
		}
		if (!ftypeok(dp))
			return (NULL);
		ndb = howmany(DIP(dp, di_size), sblock.fs_bsize);
		if (ndb < 0)
			return (NULL);
		if (mode == IFBLK || mode == IFCHR)
			ndb++;
		if (mode == IFLNK) {
			/*
			 * Fake ndb value so direct/indirect block checks below
			 * will detect any garbage after symlink string.
			 */
			if (DIP(dp, di_size) < (off_t)sblock.fs_maxsymlinklen) {
				ndb = howmany(DIP(dp, di_size),
				    sizeof(ufs2_daddr_t));
				if (ndb > UFS_NDADDR) {
					j = ndb - UFS_NDADDR;
					for (ndb = 1; j > 1; j--)
						ndb *= NINDIR(&sblock);
					ndb += UFS_NDADDR;
				}
			}
		}
		for (j = ndb; ndb < UFS_NDADDR && j < UFS_NDADDR; j++)
			if (DIP(dp, di_db[j]) != 0)
				return (NULL);
		for (j = 0, ndb -= UFS_NDADDR; ndb > 0; j++)
			ndb /= NINDIR(&sblock);
		for (; j < UFS_NIADDR; j++)
			if (DIP(dp, di_ib[j]) != 0)
				return (NULL);
	}
	return (dp);
}

void
setinodebuf(ino_t inum)
{

	if (inum % sblock.fs_ipg != 0)
		errx(EEXIT, "bad inode number %ju to setinodebuf",
		    (uintmax_t)inum);
	lastvalidinum = inum + sblock.fs_ipg - 1;
	startinum = 0;
	nextino = inum;
	lastinum = inum;
	readcount = 0;
	if (inobuf.b_un.b_buf != NULL)
		return;
	inobufsize = blkroundup(&sblock, INOBUFSIZE);
	fullcnt = inobufsize / ((sblock.fs_magic == FS_UFS1_MAGIC) ?
	    sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
	readpercg = sblock.fs_ipg / fullcnt;
	partialcnt = sblock.fs_ipg % fullcnt;
	partialsize = partialcnt * ((sblock.fs_magic == FS_UFS1_MAGIC) ?
	    sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
	if (partialcnt != 0) {
		readpercg++;
	} else {
		partialcnt = fullcnt;
		partialsize = inobufsize;
	}
	initbarea(&inobuf, BT_INODES);
	if ((inobuf.b_un.b_buf = Malloc((unsigned)inobufsize)) == NULL)
		errx(EEXIT, "cannot allocate space for inode buffer");
}

void
freeinodebuf(void)
{

	if (inobuf.b_un.b_buf != NULL)
		free((char *)inobuf.b_un.b_buf);
	inobuf.b_un.b_buf = NULL;
}

/*
 * Routines to maintain information about directory inodes.
 * This is built during the first pass and used during the
 * second and third passes.
 *
 * Enter inodes into the cache.
 */
void
cacheino(union dinode *dp, ino_t inumber)
{
	struct inoinfo *inp, **inpp;
	int i, blks;

	if (howmany(DIP(dp, di_size), sblock.fs_bsize) > UFS_NDADDR)
		blks = UFS_NDADDR + UFS_NIADDR;
	else if (DIP(dp, di_size) > 0)
		blks = howmany(DIP(dp, di_size), sblock.fs_bsize);
	else
		blks = 1;
	inp = (struct inoinfo *)
		Malloc(sizeof(*inp) + (blks - 1) * sizeof(ufs2_daddr_t));
	if (inp == NULL)
		errx(EEXIT, "cannot increase directory list");
	inpp = &inphead[inumber % dirhash];
	inp->i_nexthash = *inpp;
	*inpp = inp;
	inp->i_parent = inumber == UFS_ROOTINO ? UFS_ROOTINO : (ino_t)0;
	inp->i_dotdot = (ino_t)0;
	inp->i_number = inumber;
	inp->i_isize = DIP(dp, di_size);
	inp->i_numblks = blks;
	for (i = 0; i < MIN(blks, UFS_NDADDR); i++)
		inp->i_blks[i] = DIP(dp, di_db[i]);
	if (blks > UFS_NDADDR)
		for (i = 0; i < UFS_NIADDR; i++)
			inp->i_blks[UFS_NDADDR + i] = DIP(dp, di_ib[i]);
	if (inplast == listmax) {
		listmax += 100;
		inpsort = (struct inoinfo **)reallocarray((char *)inpsort,
		    listmax, sizeof(struct inoinfo *));
		if (inpsort == NULL)
			errx(EEXIT, "cannot increase directory list");
	}
	inpsort[inplast++] = inp;
}

/*
 * Look up an inode cache structure.
 */
struct inoinfo *
getinoinfo(ino_t inumber)
{
	struct inoinfo *inp;

	for (inp = inphead[inumber % dirhash]; inp; inp = inp->i_nexthash) {
		if (inp->i_number != inumber)
			continue;
		return (inp);
	}
	errx(EEXIT, "cannot find inode %ju", (uintmax_t)inumber);
	return ((struct inoinfo *)0);
}

/*
 * Clean up all the inode cache structure.
 */
void
inocleanup(void)
{
	struct inoinfo **inpp;

	if (inphead == NULL)
		return;
	for (inpp = &inpsort[inplast - 1]; inpp >= inpsort; inpp--)
		free((char *)(*inpp));
	free((char *)inphead);
	free((char *)inpsort);
	inphead = inpsort = NULL;
}

void
inodirty(union dinode *dp)
{

	dirty(pbp);
}

void
clri(struct inodesc *idesc, const char *type, int flag)
{
	union dinode *dp;

	dp = ginode(idesc->id_number);
	if (flag == 1) {
		pwarn("%s %s", type,
		    (DIP(dp, di_mode) & IFMT) == IFDIR ? "DIR" : "FILE");
		prtinode(idesc->id_number, dp);
		printf("\n");
	}
	if (preen || reply("CLEAR") == 1) {
		if (preen)
			printf(" (CLEARED)\n");
		n_files--;
		if (bkgrdflag == 0) {
			(void)ckinode(dp, idesc);
			inoinfo(idesc->id_number)->ino_state = USTATE;
			clearinode(dp);
			inodirty(dp);
		} else {
			cmd.value = idesc->id_number;
			cmd.size = -DIP(dp, di_nlink);
			if (debug)
				printf("adjrefcnt ino %ld amt %lld\n",
				    (long)cmd.value, (long long)cmd.size);
			if (sysctl(adjrefcnt, MIBSIZE, 0, 0,
			    &cmd, sizeof cmd) == -1)
				rwerror("ADJUST INODE", cmd.value);
		}
	}
}

int
findname(struct inodesc *idesc)
{
	struct direct *dirp = idesc->id_dirp;

	if (dirp->d_ino != idesc->id_parent || idesc->id_entryno < 2) {
		idesc->id_entryno++;
		return (KEEPON);
	}
	memmove(idesc->id_name, dirp->d_name, (size_t)dirp->d_namlen + 1);
	return (STOP|FOUND);
}

int
findino(struct inodesc *idesc)
{
	struct direct *dirp = idesc->id_dirp;

	if (dirp->d_ino == 0)
		return (KEEPON);
	if (strcmp(dirp->d_name, idesc->id_name) == 0 &&
	    dirp->d_ino >= UFS_ROOTINO && dirp->d_ino <= maxino) {
		idesc->id_parent = dirp->d_ino;
		return (STOP|FOUND);
	}
	return (KEEPON);
}

int
clearentry(struct inodesc *idesc)
{
	struct direct *dirp = idesc->id_dirp;

	if (dirp->d_ino != idesc->id_parent || idesc->id_entryno < 2) {
		idesc->id_entryno++;
		return (KEEPON);
	}
	dirp->d_ino = 0;
	return (STOP|FOUND|ALTERED);
}

void
prtinode(ino_t ino, union dinode *dp)
{
	char *p;
	struct passwd *pw;
	time_t t;

	printf(" I=%lu ", (u_long)ino);
	if (ino < UFS_ROOTINO || ino > maxino)
		return;
	printf(" OWNER=");
	if ((pw = getpwuid((int)DIP(dp, di_uid))) != NULL)
		printf("%s ", pw->pw_name);
	else
		printf("%u ", (unsigned)DIP(dp, di_uid));
	printf("MODE=%o\n", DIP(dp, di_mode));
	if (preen)
		printf("%s: ", cdevname);
	printf("SIZE=%ju ", (uintmax_t)DIP(dp, di_size));
	t = DIP(dp, di_mtime);
	p = ctime(&t);
	printf("MTIME=%12.12s %4.4s ", &p[4], &p[20]);
}

void
blkerror(ino_t ino, const char *type, ufs2_daddr_t blk)
{

	pfatal("%jd %s I=%ju", (intmax_t)blk, type, (uintmax_t)ino);
	printf("\n");
	switch (inoinfo(ino)->ino_state) {

	case FSTATE:
	case FZLINK:
		inoinfo(ino)->ino_state = FCLEAR;
		return;

	case DSTATE:
	case DZLINK:
		inoinfo(ino)->ino_state = DCLEAR;
		return;

	case FCLEAR:
	case DCLEAR:
		return;

	default:
		errx(EEXIT, "BAD STATE %d TO BLKERR", inoinfo(ino)->ino_state);
		/* NOTREACHED */
	}
}

/*
 * allocate an unused inode
 */
ino_t
allocino(ino_t request, int type)
{
	ino_t ino;
	union dinode *dp;
	struct bufarea *cgbp;
	struct cg *cgp;
	int cg;

	if (request == 0)
		request = UFS_ROOTINO;
	else if (inoinfo(request)->ino_state != USTATE)
		return (0);
	for (ino = request; ino < maxino; ino++)
		if (inoinfo(ino)->ino_state == USTATE)
			break;
	if (ino == maxino)
		return (0);
	cg = ino_to_cg(&sblock, ino);
	cgbp = cglookup(cg);
	cgp = cgbp->b_un.b_cg;
	if (!check_cgmagic(cg, cgbp))
		return (0);
	setbit(cg_inosused(cgp), ino % sblock.fs_ipg);
	cgp->cg_cs.cs_nifree--;
	switch (type & IFMT) {
	case IFDIR:
		inoinfo(ino)->ino_state = DSTATE;
		cgp->cg_cs.cs_ndir++;
		break;
	case IFREG:
	case IFLNK:
		inoinfo(ino)->ino_state = FSTATE;
		break;
	default:
		return (0);
	}
	cgdirty(cgbp);
	dp = ginode(ino);
	DIP_SET(dp, di_db[0], allocblk((long)1));
	if (DIP(dp, di_db[0]) == 0) {
		inoinfo(ino)->ino_state = USTATE;
		return (0);
	}
	DIP_SET(dp, di_mode, type);
	DIP_SET(dp, di_flags, 0);
	DIP_SET(dp, di_atime, time(NULL));
	DIP_SET(dp, di_ctime, DIP(dp, di_atime));
	DIP_SET(dp, di_mtime, DIP(dp, di_ctime));
	DIP_SET(dp, di_mtimensec, 0);
	DIP_SET(dp, di_ctimensec, 0);
	DIP_SET(dp, di_atimensec, 0);
	DIP_SET(dp, di_size, sblock.fs_fsize);
	DIP_SET(dp, di_blocks, btodb(sblock.fs_fsize));
	n_files++;
	inodirty(dp);
	inoinfo(ino)->ino_type = IFTODT(type);
	return (ino);
}

/*
 * deallocate an inode
 */
void
freeino(ino_t ino)
{
	struct inodesc idesc;
	union dinode *dp;

	memset(&idesc, 0, sizeof(struct inodesc));
	idesc.id_type = ADDR;
	idesc.id_func = pass4check;
	idesc.id_number = ino;
	dp = ginode(ino);
	(void)ckinode(dp, &idesc);
	clearinode(dp);
	inodirty(dp);
	inoinfo(ino)->ino_state = USTATE;
	n_files--;
}