GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: sbin/fsck_ext2fs/pass1.c Lines: 0 172 0.0 %
Date: 2016-12-06 Branches: 0 150 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: pass1.c,v 1.16 2015/08/20 22:02:20 deraadt Exp $	*/
2
/*	$NetBSD: pass1.c,v 1.9 2000/01/31 11:40:12 bouyer Exp $	*/
3
4
/*
5
 * Copyright (c) 1997 Manuel Bouyer.
6
 * Copyright (c) 1980, 1986, 1993
7
 *	The Regents of the University of California.  All rights reserved.
8
 *
9
 * Redistribution and use in source and binary forms, with or without
10
 * modification, are permitted provided that the following conditions
11
 * are met:
12
 * 1. Redistributions of source code must retain the above copyright
13
 *    notice, this list of conditions and the following disclaimer.
14
 * 2. Redistributions in binary form must reproduce the above copyright
15
 *    notice, this list of conditions and the following disclaimer in the
16
 *    documentation and/or other materials provided with the distribution.
17
 * 3. Neither the name of the University nor the names of its contributors
18
 *    may be used to endorse or promote products derived from this software
19
 *    without specific prior written permission.
20
 *
21
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31
 * SUCH DAMAGE.
32
 */
33
34
#include <sys/param.h>	/* setbit btodb isset */
35
#include <sys/time.h>
36
#include <ufs/ext2fs/ext2fs_dinode.h>
37
#include <ufs/ext2fs/ext2fs_dir.h>
38
#include <ufs/ext2fs/ext2fs.h>
39
40
#include <ufs/ufs/dinode.h> /* for IFMT & friends */
41
42
#include <stdio.h>
43
#include <stdlib.h>
44
#include <string.h>
45
#include <time.h>
46
47
#include "fsck.h"
48
#include "extern.h"
49
#include "fsutil.h"
50
51
static daddr32_t badblk;
52
static daddr32_t dupblk;
53
static void checkinode(ino_t, struct inodesc *);
54
55
void
56
pass1(void)
57
{
58
	ino_t inumber;
59
	int c, i;
60
	daddr32_t dbase;
61
	struct inodesc idesc;
62
63
	/*
64
	 * Set file system reserved blocks in used block map.
65
	 */
66
	for (c = 0; c < sblock.e2fs_ncg; c++) {
67
		dbase = c * sblock.e2fs.e2fs_bpg +
68
		    sblock.e2fs.e2fs_first_dblock;
69
		/* Mark the blocks used for the inode table */
70
		if (letoh32(sblock.e2fs_gd[c].ext2bgd_i_tables) >= dbase) {
71
			for (i = 0; i < sblock.e2fs_itpg; i++)
72
				setbmap(
73
				    letoh32(sblock.e2fs_gd[c].ext2bgd_i_tables)
74
				    + i);
75
		}
76
		/* Mark the blocks used for the block bitmap */
77
		if (letoh32(sblock.e2fs_gd[c].ext2bgd_b_bitmap) >= dbase)
78
			setbmap(letoh32(sblock.e2fs_gd[c].ext2bgd_b_bitmap));
79
		/* Mark the blocks used for the inode bitmap */
80
		if (letoh32(sblock.e2fs_gd[c].ext2bgd_i_bitmap) >= dbase)
81
			setbmap(letoh32(sblock.e2fs_gd[c].ext2bgd_i_bitmap));
82
83
		if (sblock.e2fs.e2fs_rev == E2FS_REV0 ||
84
		    (sblock.e2fs.e2fs_features_rocompat &
85
			EXT2F_ROCOMPAT_SPARSESUPER) == 0 ||
86
		    cg_has_sb(c)) {
87
			/* Mark copuy of SB and descriptors */
88
			setbmap(dbase);
89
			for (i = 1; i <= sblock.e2fs_ngdb; i++)
90
				setbmap(dbase+i);
91
		}
92
93
94
		if (c == 0) {
95
			for(i = 0; i < dbase; i++)
96
				setbmap(i);
97
		}
98
	}
99
100
	/*
101
	 * Find all allocated blocks.
102
	 */
103
	memset(&idesc, 0, sizeof(struct inodesc));
104
	idesc.id_type = ADDR;
105
	idesc.id_func = pass1check;
106
	inumber = 1;
107
	n_files = n_blks = 0;
108
	resetinodebuf();
109
	for (c = 0; c < sblock.e2fs_ncg; c++) {
110
		for (i = 0;
111
			i < sblock.e2fs.e2fs_ipg && inumber <= sblock.e2fs.e2fs_icount;
112
			i++, inumber++) {
113
			if (inumber < EXT2_ROOTINO) /* XXX */
114
				continue;
115
			checkinode(inumber, &idesc);
116
		}
117
	}
118
	freeinodebuf();
119
}
120
121
static void
122
checkinode(ino_t inumber, struct inodesc *idesc)
123
{
124
	struct ext2fs_dinode *dp;
125
	struct zlncnt *zlnp;
126
	int ndb, j;
127
	mode_t mode;
128
129
	dp = getnextinode(inumber);
130
	if (inumber < EXT2_FIRSTINO && inumber != EXT2_ROOTINO)
131
		return;
132
133
	mode = letoh16(dp->e2di_mode) & IFMT;
134
	if (mode == 0 || (dp->e2di_dtime != 0 && dp->e2di_nlink == 0)) {
135
		if (mode == 0 && (
136
			memcmp(dp->e2di_blocks, zino.e2di_blocks,
137
			(NDADDR + NIADDR) * sizeof(u_int32_t)) ||
138
		    dp->e2di_mode || inosize(dp))) {
139
			pfatal("PARTIALLY ALLOCATED INODE I=%llu",
140
			    (unsigned long long)inumber);
141
			if (reply("CLEAR") == 1) {
142
				dp = ginode(inumber);
143
				clearinode(dp);
144
				inodirty();
145
			}
146
		}
147
#ifdef notyet /* it seems that dtime == 0 is valid for a unallocated inode */
148
		if (dp->e2di_dtime == 0) {
149
			pwarn("DELETED INODE I=%llu HAS A NULL DTIME",
150
			    (unsigned long long)inumber);
151
			if (preen) {
152
				printf(" (CORRECTED)\n");
153
			}
154
			if (preen || reply("CORRECT")) {
155
				time_t t;
156
				time(&t);
157
				dp->e2di_dtime = htole32(t);
158
				dp = ginode(inumber);
159
				inodirty();
160
			}
161
		}
162
#endif
163
		statemap[inumber] = USTATE;
164
		return;
165
	}
166
	lastino = inumber;
167
	if (dp->e2di_dtime != 0) {
168
		time_t t = letoh32(dp->e2di_dtime);
169
		char *p = ctime(&t);
170
		pwarn("INODE I=%llu HAS DTIME=%12.12s %4.4s",
171
		    (unsigned long long)inumber, &p[4], &p[20]);
172
		if (preen) {
173
			printf(" (CORRECTED)\n");
174
		}
175
		if (preen || reply("CORRECT")) {
176
			dp = ginode(inumber);
177
			dp->e2di_dtime = 0;
178
			inodirty();
179
		}
180
	}
181
	if (inosize(dp) + sblock.e2fs_bsize - 1 < inosize(dp)) {
182
		if (debug)
183
			printf("bad size %llu:", (unsigned long long)inosize(dp));
184
		goto unknown;
185
	}
186
	if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) {
187
		dp = ginode(inumber);
188
		dp->e2di_mode = htole16(IFREG|0600);
189
		inossize(dp, sblock.e2fs_bsize);
190
		inodirty();
191
	}
192
	ndb = howmany(inosize(dp), sblock.e2fs_bsize);
193
	if (ndb < 0) {
194
		if (debug)
195
			printf("bad size %llu ndb %d:",
196
			    (unsigned long long)inosize(dp), ndb);
197
		goto unknown;
198
	}
199
	if (mode == IFBLK || mode == IFCHR)
200
		ndb++;
201
	if (mode == IFLNK) {
202
		/*
203
		 * Fake ndb value so direct/indirect block checks below
204
		 * will detect any garbage after symlink string.
205
		 */
206
		if (inosize(dp) < EXT2_MAXSYMLINKLEN ||
207
		    (EXT2_MAXSYMLINKLEN == 0 && dp->e2di_blocks == 0)) {
208
			ndb = howmany(inosize(dp), sizeof(u_int32_t));
209
			if (ndb > NDADDR) {
210
				j = ndb - NDADDR;
211
				for (ndb = 1; j > 1; j--)
212
					ndb *= NINDIR(&sblock);
213
				ndb += NDADDR;
214
			}
215
		}
216
	}
217
	/* Linux puts things in blocks for FIFO, so skip this check */
218
	if (mode != IFIFO) {
219
		for (j = ndb; j < NDADDR; j++)
220
			if (dp->e2di_blocks[j] != 0) {
221
				if (debug)
222
					printf("bad direct addr: %d\n",
223
					    letoh32(dp->e2di_blocks[j]));
224
				goto unknown;
225
			}
226
		for (j = 0, ndb -= NDADDR; ndb > 0; j++)
227
			ndb /= NINDIR(&sblock);
228
		for (; j < NIADDR; j++) {
229
			if (dp->e2di_blocks[j+NDADDR] != 0) {
230
				if (debug)
231
					printf("bad indirect addr: %d\n",
232
					    letoh32(dp->e2di_blocks[j+NDADDR]));
233
				goto unknown;
234
			}
235
		}
236
	}
237
	if (ftypeok(dp) == 0)
238
		goto unknown;
239
	n_files++;
240
	lncntp[inumber] = letoh16(dp->e2di_nlink);
241
	if (dp->e2di_nlink == 0) {
242
		zlnp = malloc(sizeof *zlnp);
243
		if (zlnp == NULL) {
244
			pfatal("LINK COUNT TABLE OVERFLOW");
245
			if (reply("CONTINUE") == 0)
246
				errexit("%s\n", "");
247
		} else {
248
			zlnp->zlncnt = inumber;
249
			zlnp->next = zlnhead;
250
			zlnhead = zlnp;
251
		}
252
	}
253
	if (mode == IFDIR) {
254
		if (inosize(dp) == 0)
255
			statemap[inumber] = DCLEAR;
256
		else
257
			statemap[inumber] = DSTATE;
258
		cacheino(dp, inumber);
259
	} else {
260
		statemap[inumber] = FSTATE;
261
	}
262
	typemap[inumber] = E2IFTODT(mode);
263
	badblk = dupblk = 0;
264
	idesc->id_number = inumber;
265
	(void)ckinode(dp, idesc);
266
	idesc->id_entryno *= btodb(sblock.e2fs_bsize);
267
	if (letoh32(dp->e2di_nblock) != idesc->id_entryno) {
268
		pwarn("INCORRECT BLOCK COUNT I=%llu (%d should be %d)",
269
		    (unsigned long long)inumber,
270
		    letoh32(dp->e2di_nblock), idesc->id_entryno);
271
		if (preen)
272
			printf(" (CORRECTED)\n");
273
		else if (reply("CORRECT") == 0)
274
			return;
275
		dp = ginode(inumber);
276
		dp->e2di_nblock = htole32(idesc->id_entryno);
277
		inodirty();
278
	}
279
	return;
280
unknown:
281
	pfatal("UNKNOWN FILE TYPE I=%llu", (unsigned long long)inumber);
282
	statemap[inumber] = FCLEAR;
283
	if (reply("CLEAR") == 1) {
284
		statemap[inumber] = USTATE;
285
		dp = ginode(inumber);
286
		clearinode(dp);
287
		inodirty();
288
	}
289
}
290
291
int
292
pass1check(struct inodesc *idesc)
293
{
294
	int res = KEEPON;
295
	int anyout, nfrags;
296
	daddr32_t blkno = idesc->id_blkno;
297
	struct dups *dlp;
298
	struct dups *new;
299
300
	if ((anyout = chkrange(blkno, idesc->id_numfrags)) != 0) {
301
		blkerror(idesc->id_number, "BAD", blkno);
302
		if (badblk++ >= MAXBAD) {
303
			pwarn("EXCESSIVE BAD BLKS I=%llu",
304
			    (unsigned long long)idesc->id_number);
305
			if (preen)
306
				printf(" (SKIPPING)\n");
307
			else if (reply("CONTINUE") == 0)
308
				errexit("%s\n", "");
309
			return (STOP);
310
		}
311
	}
312
	for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) {
313
		if (anyout && chkrange(blkno, 1)) {
314
			res = SKIP;
315
		} else if (!testbmap(blkno)) {
316
			n_blks++;
317
			setbmap(blkno);
318
		} else {
319
			blkerror(idesc->id_number, "DUP", blkno);
320
			if (dupblk++ >= MAXDUP) {
321
				pwarn("EXCESSIVE DUP BLKS I=%lluu",
322
				    (unsigned long long)idesc->id_number);
323
				if (preen)
324
					printf(" (SKIPPING)\n");
325
				else if (reply("CONTINUE") == 0)
326
					errexit("%s\n", "");
327
				return (STOP);
328
			}
329
			new = malloc(sizeof(struct dups));
330
			if (new == NULL) {
331
				pfatal("DUP TABLE OVERFLOW.");
332
				if (reply("CONTINUE") == 0)
333
					errexit("%s\n", "");
334
				return (STOP);
335
			}
336
			new->dup = blkno;
337
			if (muldup == 0) {
338
				duplist = muldup = new;
339
				new->next = 0;
340
			} else {
341
				new->next = muldup->next;
342
				muldup->next = new;
343
			}
344
			for (dlp = duplist; dlp != muldup; dlp = dlp->next)
345
				if (dlp->dup == blkno)
346
					break;
347
			if (dlp == muldup && dlp->dup != blkno)
348
				muldup = new;
349
		}
350
		/*
351
		 * count the number of blocks found in id_entryno
352
		 */
353
		idesc->id_entryno++;
354
	}
355
	return (res);
356
}