Commit | Line | Data |
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76797561 DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
5d9906c0 | 7 | #ifndef lint |
6d8dba44 | 8 | static char sccsid[] = "@(#)utilities.c 5.4 (Berkeley) %G%"; |
76797561 | 9 | #endif not lint |
5d9906c0 KM |
10 | |
11 | #include <stdio.h> | |
12 | #include <ctype.h> | |
13 | #include <sys/param.h> | |
14 | #include <sys/inode.h> | |
15 | #include <sys/fs.h> | |
3ad2f081 | 16 | #include <sys/dir.h> |
5d9906c0 KM |
17 | #include "fsck.h" |
18 | ||
19 | long lseek(); | |
20 | ||
21 | ftypeok(dp) | |
22 | DINODE *dp; | |
23 | { | |
24 | switch (dp->di_mode & IFMT) { | |
25 | ||
26 | case IFDIR: | |
27 | case IFREG: | |
28 | case IFBLK: | |
29 | case IFCHR: | |
30 | case IFLNK: | |
31 | case IFSOCK: | |
32 | return (1); | |
33 | ||
34 | default: | |
35 | if (debug) | |
36 | printf("bad file type 0%o\n", dp->di_mode); | |
37 | return (0); | |
38 | } | |
39 | } | |
40 | ||
41 | reply(s) | |
42 | char *s; | |
43 | { | |
44 | char line[80]; | |
45 | ||
46 | if (preen) | |
47 | pfatal("INTERNAL ERROR: GOT TO reply()"); | |
5d9906c0 KM |
48 | printf("\n%s? ", s); |
49 | if (nflag || dfile.wfdes < 0) { | |
50 | printf(" no\n\n"); | |
51 | return (0); | |
52 | } | |
53 | if (yflag) { | |
54 | printf(" yes\n\n"); | |
55 | return (1); | |
56 | } | |
57 | if (getline(stdin, line, sizeof(line)) == EOF) | |
58 | errexit("\n"); | |
59 | printf("\n"); | |
60 | if (line[0] == 'y' || line[0] == 'Y') | |
61 | return (1); | |
62 | else | |
63 | return (0); | |
64 | } | |
65 | ||
66 | getline(fp, loc, maxlen) | |
67 | FILE *fp; | |
68 | char *loc; | |
69 | { | |
70 | register n; | |
71 | register char *p, *lastloc; | |
72 | ||
73 | p = loc; | |
74 | lastloc = &p[maxlen-1]; | |
75 | while ((n = getc(fp)) != '\n') { | |
76 | if (n == EOF) | |
77 | return (EOF); | |
78 | if (!isspace(n) && p < lastloc) | |
79 | *p++ = n; | |
80 | } | |
81 | *p = 0; | |
82 | return (p - loc); | |
83 | } | |
84 | ||
85 | BUFAREA * | |
86 | getblk(bp, blk, size) | |
87 | register BUFAREA *bp; | |
88 | daddr_t blk; | |
89 | long size; | |
90 | { | |
91 | register struct filecntl *fcp; | |
92 | daddr_t dblk; | |
93 | ||
94 | fcp = &dfile; | |
95 | dblk = fsbtodb(&sblock, blk); | |
96 | if (bp->b_bno == dblk) | |
97 | return (bp); | |
98 | flush(fcp, bp); | |
49505034 KM |
99 | bp->b_errs = bread(fcp, bp->b_un.b_buf, dblk, size); |
100 | bp->b_bno = dblk; | |
101 | bp->b_size = size; | |
102 | return (bp); | |
5d9906c0 KM |
103 | } |
104 | ||
105 | flush(fcp, bp) | |
106 | struct filecntl *fcp; | |
107 | register BUFAREA *bp; | |
108 | { | |
7718c0e6 | 109 | register int i, j; |
5d9906c0 | 110 | |
7718c0e6 KM |
111 | if (!bp->b_dirty) |
112 | return; | |
49505034 KM |
113 | if (bp->b_errs != 0) |
114 | pfatal("WRITING ZERO'ED BLOCK %d TO DISK\n", bp->b_bno); | |
5d9906c0 | 115 | bp->b_dirty = 0; |
49505034 | 116 | bp->b_errs = 0; |
cee9cbac | 117 | bwrite(fcp, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size); |
7718c0e6 KM |
118 | if (bp != &sblk) |
119 | return; | |
120 | for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { | |
cee9cbac | 121 | bwrite(&dfile, (char *)sblock.fs_csp[j], |
7718c0e6 KM |
122 | fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), |
123 | sblock.fs_cssize - i < sblock.fs_bsize ? | |
124 | sblock.fs_cssize - i : sblock.fs_bsize); | |
125 | } | |
5d9906c0 KM |
126 | } |
127 | ||
128 | rwerr(s, blk) | |
129 | char *s; | |
130 | daddr_t blk; | |
131 | { | |
132 | ||
133 | if (preen == 0) | |
134 | printf("\n"); | |
135 | pfatal("CANNOT %s: BLK %ld", s, blk); | |
136 | if (reply("CONTINUE") == 0) | |
137 | errexit("Program terminated\n"); | |
138 | } | |
139 | ||
140 | ckfini() | |
141 | { | |
142 | ||
143 | flush(&dfile, &fileblk); | |
144 | flush(&dfile, &sblk); | |
145 | if (sblk.b_bno != SBLOCK) { | |
146 | sblk.b_bno = SBLOCK; | |
147 | sbdirty(); | |
148 | flush(&dfile, &sblk); | |
149 | } | |
150 | flush(&dfile, &inoblk); | |
111a311a | 151 | flush(&dfile, &cgblk); |
5d9906c0 KM |
152 | (void)close(dfile.rfdes); |
153 | (void)close(dfile.wfdes); | |
154 | } | |
155 | ||
156 | bread(fcp, buf, blk, size) | |
157 | register struct filecntl *fcp; | |
158 | char *buf; | |
159 | daddr_t blk; | |
160 | long size; | |
161 | { | |
49505034 KM |
162 | char *cp; |
163 | int i, errs; | |
164 | ||
5d9906c0 KM |
165 | if (lseek(fcp->rfdes, (long)dbtob(blk), 0) < 0) |
166 | rwerr("SEEK", blk); | |
167 | else if (read(fcp->rfdes, buf, (int)size) == size) | |
49505034 | 168 | return (0); |
5d9906c0 | 169 | rwerr("READ", blk); |
49505034 KM |
170 | if (lseek(fcp->rfdes, (long)dbtob(blk), 0) < 0) |
171 | rwerr("SEEK", blk); | |
172 | errs = 0; | |
6d8dba44 | 173 | bzero(cp, size); |
cee9cbac | 174 | pfatal("THE FOLLOWING SECTORS COULD NOT BE READ:"); |
49505034 KM |
175 | for (cp = buf, i = 0; i < size; i += DEV_BSIZE, cp += DEV_BSIZE) { |
176 | if (read(fcp->rfdes, cp, DEV_BSIZE) < 0) { | |
6d8dba44 | 177 | lseek(fcp->rfdes, (long)dbtob(blk) + i + DEV_BSIZE, 0); |
cee9cbac | 178 | printf(" %d,", blk + i / DEV_BSIZE); |
49505034 KM |
179 | errs++; |
180 | } | |
181 | } | |
cee9cbac | 182 | printf("\n"); |
49505034 | 183 | return (errs); |
5d9906c0 KM |
184 | } |
185 | ||
186 | bwrite(fcp, buf, blk, size) | |
187 | register struct filecntl *fcp; | |
188 | char *buf; | |
189 | daddr_t blk; | |
190 | long size; | |
191 | { | |
cee9cbac KM |
192 | int i; |
193 | char *cp; | |
5d9906c0 KM |
194 | |
195 | if (fcp->wfdes < 0) | |
cee9cbac | 196 | return; |
5d9906c0 KM |
197 | if (lseek(fcp->wfdes, (long)dbtob(blk), 0) < 0) |
198 | rwerr("SEEK", blk); | |
199 | else if (write(fcp->wfdes, buf, (int)size) == size) { | |
200 | fcp->mod = 1; | |
cee9cbac | 201 | return; |
5d9906c0 KM |
202 | } |
203 | rwerr("WRITE", blk); | |
cee9cbac KM |
204 | if (lseek(fcp->wfdes, (long)dbtob(blk), 0) < 0) |
205 | rwerr("SEEK", blk); | |
206 | pfatal("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:"); | |
207 | for (cp = buf, i = 0; i < size; i += DEV_BSIZE, cp += DEV_BSIZE) | |
6d8dba44 KM |
208 | if (write(fcp->wfdes, cp, DEV_BSIZE) < 0) { |
209 | lseek(fcp->rfdes, (long)dbtob(blk) + i + DEV_BSIZE, 0); | |
cee9cbac | 210 | printf(" %d,", blk + i / DEV_BSIZE); |
6d8dba44 | 211 | } |
cee9cbac KM |
212 | printf("\n"); |
213 | return; | |
5d9906c0 KM |
214 | } |
215 | ||
3e2a23ca KM |
216 | /* |
217 | * allocate a data block with the specified number of fragments | |
218 | */ | |
219 | allocblk(frags) | |
220 | int frags; | |
221 | { | |
222 | register int i, j, k; | |
223 | ||
224 | if (frags <= 0 || frags > sblock.fs_frag) | |
225 | return (0); | |
226 | for (i = 0; i < fmax - sblock.fs_frag; i += sblock.fs_frag) { | |
227 | for (j = 0; j <= sblock.fs_frag - frags; j++) { | |
228 | if (getbmap(i + j)) | |
229 | continue; | |
230 | for (k = 1; k < frags; k++) | |
231 | if (getbmap(i + j + k)) | |
232 | break; | |
233 | if (k < frags) { | |
234 | j += k; | |
235 | continue; | |
236 | } | |
237 | for (k = 0; k < frags; k++) | |
238 | setbmap(i + j + k); | |
239 | n_blks += frags; | |
240 | return (i + j); | |
241 | } | |
242 | } | |
243 | return (0); | |
244 | } | |
245 | ||
246 | /* | |
247 | * Free a previously allocated block | |
248 | */ | |
249 | freeblk(blkno, frags) | |
250 | daddr_t blkno; | |
251 | int frags; | |
252 | { | |
253 | struct inodesc idesc; | |
254 | ||
255 | idesc.id_blkno = blkno; | |
256 | idesc.id_numfrags = frags; | |
257 | pass4check(&idesc); | |
258 | } | |
259 | ||
3ad2f081 KM |
260 | /* |
261 | * Find a pathname | |
262 | */ | |
263 | getpathname(namebuf, curdir, ino) | |
264 | char *namebuf; | |
265 | ino_t curdir, ino; | |
266 | { | |
267 | int len; | |
268 | register char *cp; | |
269 | struct inodesc idesc; | |
270 | extern int findname(); | |
271 | ||
272 | if (statemap[ino] != DSTATE && statemap[ino] != DFOUND) { | |
273 | strcpy(namebuf, "?"); | |
274 | return; | |
275 | } | |
276 | bzero(&idesc, sizeof(struct inodesc)); | |
277 | idesc.id_type = DATA; | |
278 | cp = &namebuf[BUFSIZ - 1]; | |
315f1422 | 279 | *cp = '\0'; |
3ad2f081 KM |
280 | if (curdir != ino) { |
281 | idesc.id_parent = curdir; | |
282 | goto namelookup; | |
283 | } | |
284 | while (ino != ROOTINO) { | |
285 | idesc.id_number = ino; | |
286 | idesc.id_func = findino; | |
287 | idesc.id_name = ".."; | |
315f1422 | 288 | if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) |
3ad2f081 KM |
289 | break; |
290 | namelookup: | |
291 | idesc.id_number = idesc.id_parent; | |
292 | idesc.id_parent = ino; | |
293 | idesc.id_func = findname; | |
294 | idesc.id_name = namebuf; | |
315f1422 | 295 | if ((ckinode(ginode(idesc.id_number), &idesc) & FOUND) == 0) |
3ad2f081 KM |
296 | break; |
297 | len = strlen(namebuf); | |
298 | cp -= len; | |
299 | if (cp < &namebuf[MAXNAMLEN]) | |
300 | break; | |
301 | bcopy(namebuf, cp, len); | |
302 | *--cp = '/'; | |
303 | ino = idesc.id_number; | |
304 | } | |
305 | if (ino != ROOTINO) { | |
306 | strcpy(namebuf, "?"); | |
307 | return; | |
308 | } | |
309 | bcopy(cp, namebuf, &namebuf[BUFSIZ] - cp); | |
310 | } | |
311 | ||
5d9906c0 KM |
312 | catch() |
313 | { | |
314 | ||
315 | ckfini(); | |
316 | exit(12); | |
317 | } | |
318 | ||
3cfe4689 MK |
319 | /* |
320 | * When preening, allow a single quit to signal | |
321 | * a special exit after filesystem checks complete | |
322 | * so that reboot sequence may be interrupted. | |
323 | */ | |
324 | catchquit() | |
325 | { | |
326 | extern returntosingle; | |
327 | ||
328 | printf("returning to single-user after filesystem check\n"); | |
329 | returntosingle = 1; | |
330 | (void)signal(SIGQUIT, SIG_DFL); | |
331 | } | |
332 | ||
333 | /* | |
334 | * Ignore a single quit signal; wait and flush just in case. | |
335 | * Used by child processes in preen. | |
336 | */ | |
337 | voidquit() | |
338 | { | |
339 | ||
340 | sleep(1); | |
341 | (void)signal(SIGQUIT, SIG_IGN); | |
342 | (void)signal(SIGQUIT, SIG_DFL); | |
343 | } | |
344 | ||
5d9906c0 KM |
345 | /* |
346 | * determine whether an inode should be fixed. | |
347 | */ | |
7718c0e6 | 348 | dofix(idesc, msg) |
5d9906c0 | 349 | register struct inodesc *idesc; |
7718c0e6 | 350 | char *msg; |
5d9906c0 KM |
351 | { |
352 | ||
353 | switch (idesc->id_fix) { | |
354 | ||
355 | case DONTKNOW: | |
7718c0e6 KM |
356 | if (idesc->id_type == DATA) |
357 | direrr(idesc->id_number, msg); | |
358 | else | |
359 | pwarn(msg); | |
360 | if (preen) { | |
361 | printf(" (SALVAGED)\n"); | |
362 | idesc->id_fix = FIX; | |
363 | return (ALTERED); | |
364 | } | |
5d9906c0 KM |
365 | if (reply("SALVAGE") == 0) { |
366 | idesc->id_fix = NOFIX; | |
367 | return (0); | |
368 | } | |
369 | idesc->id_fix = FIX; | |
370 | return (ALTERED); | |
371 | ||
372 | case FIX: | |
373 | return (ALTERED); | |
374 | ||
375 | case NOFIX: | |
376 | return (0); | |
377 | ||
378 | default: | |
379 | errexit("UNKNOWN INODESC FIX MODE %d\n", idesc->id_fix); | |
380 | } | |
381 | /* NOTREACHED */ | |
382 | } | |
383 | ||
5d9906c0 KM |
384 | /* VARARGS1 */ |
385 | errexit(s1, s2, s3, s4) | |
386 | char *s1; | |
387 | { | |
7718c0e6 | 388 | printf(s1, s2, s3, s4); |
5d9906c0 KM |
389 | exit(8); |
390 | } | |
391 | ||
392 | /* | |
393 | * An inconsistency occured which shouldn't during normal operations. | |
394 | * Die if preening, otherwise just printf. | |
395 | */ | |
396 | /* VARARGS1 */ | |
397 | pfatal(s, a1, a2, a3) | |
398 | char *s; | |
399 | { | |
400 | ||
401 | if (preen) { | |
402 | printf("%s: ", devname); | |
403 | printf(s, a1, a2, a3); | |
404 | printf("\n"); | |
7718c0e6 KM |
405 | printf("%s: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.\n", |
406 | devname); | |
407 | exit(8); | |
5d9906c0 KM |
408 | } |
409 | printf(s, a1, a2, a3); | |
410 | } | |
411 | ||
5d9906c0 KM |
412 | /* |
413 | * Pwarn is like printf when not preening, | |
414 | * or a warning (preceded by filename) when preening. | |
415 | */ | |
416 | /* VARARGS1 */ | |
417 | pwarn(s, a1, a2, a3, a4, a5, a6) | |
418 | char *s; | |
419 | { | |
420 | ||
421 | if (preen) | |
422 | printf("%s: ", devname); | |
423 | printf(s, a1, a2, a3, a4, a5, a6); | |
424 | } | |
425 | ||
426 | #ifndef lint | |
427 | /* | |
428 | * Stub for routines from kernel. | |
429 | */ | |
430 | panic(s) | |
431 | char *s; | |
432 | { | |
433 | ||
7718c0e6 KM |
434 | pfatal("INTERNAL INCONSISTENCY:"); |
435 | errexit(s); | |
5d9906c0 KM |
436 | } |
437 | #endif |