Contents of /trunk/mkinitrd-magellan/busybox/util-linux/fsck_minix.c
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Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
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File size: 33316 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * fsck.c - a file system consistency checker for Linux. |
4 | * |
5 | * (C) 1991, 1992 Linus Torvalds. |
6 | * |
7 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
8 | */ |
9 | |
10 | /* |
11 | * 09.11.91 - made the first rudimentary functions |
12 | * |
13 | * 10.11.91 - updated, does checking, no repairs yet. |
14 | * Sent out to the mailing-list for testing. |
15 | * |
16 | * 14.11.91 - Testing seems to have gone well. Added some |
17 | * correction-code, and changed some functions. |
18 | * |
19 | * 15.11.91 - More correction code. Hopefully it notices most |
20 | * cases now, and tries to do something about them. |
21 | * |
22 | * 16.11.91 - More corrections (thanks to Mika Jalava). Most |
23 | * things seem to work now. Yeah, sure. |
24 | * |
25 | * |
26 | * 19.04.92 - Had to start over again from this old version, as a |
27 | * kernel bug ate my enhanced fsck in february. |
28 | * |
29 | * 28.02.93 - added support for different directory entry sizes.. |
30 | * |
31 | * Sat Mar 6 18:59:42 1993, faith@cs.unc.edu: Output namelen with |
32 | * super-block information |
33 | * |
34 | * Sat Oct 9 11:17:11 1993, faith@cs.unc.edu: make exit status conform |
35 | * to that required by fsutil |
36 | * |
37 | * Mon Jan 3 11:06:52 1994 - Dr. Wettstein (greg%wind.uucp@plains.nodak.edu) |
38 | * Added support for file system valid flag. Also |
39 | * added program_version variable and output of |
40 | * program name and version number when program |
41 | * is executed. |
42 | * |
43 | * 30.10.94 - added support for v2 filesystem |
44 | * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de) |
45 | * |
46 | * 10.12.94 - added test to prevent checking of mounted fs adapted |
47 | * from Theodore Ts'o's (tytso@athena.mit.edu) e2fsck |
48 | * program. (Daniel Quinlan, quinlan@yggdrasil.com) |
49 | * |
50 | * 01.07.96 - Fixed the v2 fs stuff to use the right #defines and such |
51 | * for modern libcs (janl@math.uio.no, Nicolai Langfeldt) |
52 | * |
53 | * 02.07.96 - Added C bit fiddling routines from rmk@ecs.soton.ac.uk |
54 | * (Russell King). He made them for ARM. It would seem |
55 | * that the ARM is powerful enough to do this in C whereas |
56 | * i386 and m64k must use assembly to get it fast >:-) |
57 | * This should make minix fsck system-independent. |
58 | * (janl@math.uio.no, Nicolai Langfeldt) |
59 | * |
60 | * 04.11.96 - Added minor fixes from Andreas Schwab to avoid compiler |
61 | * warnings. Added mc68k bitops from |
62 | * Joerg Dorchain <dorchain@mpi-sb.mpg.de>. |
63 | * |
64 | * 06.11.96 - Added v2 code submitted by Joerg Dorchain, but written by |
65 | * Andreas Schwab. |
66 | * |
67 | * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org> |
68 | * - added Native Language Support |
69 | * |
70 | * |
71 | * I've had no time to add comments - hopefully the function names |
72 | * are comments enough. As with all file system checkers, this assumes |
73 | * the file system is quiescent - don't use it on a mounted device |
74 | * unless you can be sure nobody is writing to it (and remember that the |
75 | * kernel can write to it when it searches for files). |
76 | * |
77 | * Usage: fsck [-larvsm] device |
78 | * -l for a listing of all the filenames |
79 | * -a for automatic repairs (not implemented) |
80 | * -r for repairs (interactive) (not implemented) |
81 | * -v for verbose (tells how many files) |
82 | * -s for super-block info |
83 | * -m for minix-like "mode not cleared" warnings |
84 | * -f force filesystem check even if filesystem marked as valid |
85 | * |
86 | * The device may be a block device or a image of one, but this isn't |
87 | * enforced (but it's not much fun on a character device :-). |
88 | */ |
89 | |
90 | #include "busybox.h" |
91 | #include <mntent.h> |
92 | |
93 | #include "minix.h" |
94 | |
95 | #ifndef BLKGETSIZE |
96 | #define BLKGETSIZE _IO(0x12,96) /* return device size */ |
97 | #endif |
98 | |
99 | #ifdef UNUSED |
100 | enum { |
101 | MINIX1_LINK_MAX = 250, |
102 | MINIX2_LINK_MAX = 65530, |
103 | MINIX_I_MAP_SLOTS = 8, |
104 | MINIX_Z_MAP_SLOTS = 64, |
105 | MINIX_V1 = 0x0001, /* original minix fs */ |
106 | MINIX_V2 = 0x0002, /* minix V2 fs */ |
107 | NAME_MAX = 255, /* # chars in a file name */ |
108 | }; |
109 | #endif |
110 | |
111 | #if ENABLE_FEATURE_MINIX2 |
112 | static smallint version2; |
113 | #else |
114 | enum { version2 = 0 }; |
115 | #endif |
116 | |
117 | #define PROGRAM_VERSION "1.2 - 11/11/96" |
118 | static smallint repair, automatic, verbose, list, show, warn_mode, force; |
119 | static smallint changed; /* is filesystem modified? */ |
120 | static smallint errors_uncorrected; /* flag if some error was not corrected */ |
121 | |
122 | static smallint termios_set; |
123 | static struct termios termios; |
124 | |
125 | static char *device_name; |
126 | static int IN; |
127 | static int directory, regular, blockdev, chardev, links, symlinks, total; |
128 | |
129 | //also smallint? |
130 | static int dirsize = 16; |
131 | static int namelen = 14; |
132 | |
133 | static char *inode_buffer; |
134 | //xzalloc? |
135 | static char super_block_buffer[BLOCK_SIZE]; |
136 | |
137 | #define Inode1 (((struct minix1_inode *) inode_buffer)-1) |
138 | #define Inode2 (((struct minix2_inode *) inode_buffer)-1) |
139 | |
140 | #define Super (*(struct minix_super_block *)super_block_buffer) |
141 | |
142 | #if ENABLE_FEATURE_MINIX2 |
143 | # define ZONES ((unsigned)(version2 ? Super.s_zones : Super.s_nzones)) |
144 | #else |
145 | # define ZONES ((unsigned)(Super.s_nzones)) |
146 | #endif |
147 | #define INODES ((unsigned)Super.s_ninodes) |
148 | #define IMAPS ((unsigned)Super.s_imap_blocks) |
149 | #define ZMAPS ((unsigned)Super.s_zmap_blocks) |
150 | #define FIRSTZONE ((unsigned)Super.s_firstdatazone) |
151 | #define ZONESIZE ((unsigned)Super.s_log_zone_size) |
152 | #define MAXSIZE ((unsigned)Super.s_max_size) |
153 | #define MAGIC (Super.s_magic) |
154 | |
155 | /* gcc likes this more (code is smaller) than macro variant */ |
156 | static ATTRIBUTE_ALWAYS_INLINE unsigned div_roundup(unsigned size, unsigned n) |
157 | { |
158 | return (size + n-1) / n; |
159 | } |
160 | |
161 | #if ENABLE_FEATURE_MINIX2 |
162 | #define INODE_BLOCKS div_roundup(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \ |
163 | : MINIX1_INODES_PER_BLOCK)) |
164 | #else |
165 | #define INODE_BLOCKS div_roundup(INODES, MINIX1_INODES_PER_BLOCK) |
166 | #endif |
167 | |
168 | #define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE) |
169 | #define NORM_FIRSTZONE (2 + IMAPS + ZMAPS + INODE_BLOCKS) |
170 | |
171 | static char *inode_map; |
172 | static char *zone_map; |
173 | |
174 | static unsigned char *inode_count; |
175 | static unsigned char *zone_count; |
176 | |
177 | static int bit(char *a, unsigned i) |
178 | { |
179 | return (a[i >> 3] & (1<<(i & 7))) != 0; |
180 | } |
181 | |
182 | #define inode_in_use(x) (bit(inode_map,(x))) |
183 | #define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1)) |
184 | |
185 | #define mark_inode(x) (setbit(inode_map,(x)),changed=1) |
186 | #define unmark_inode(x) (clrbit(inode_map,(x)),changed=1) |
187 | |
188 | #define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1),changed=1) |
189 | #define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1),changed=1) |
190 | |
191 | |
192 | static void recursive_check(unsigned ino); |
193 | #if ENABLE_FEATURE_MINIX2 |
194 | static void recursive_check2(unsigned ino); |
195 | #endif |
196 | |
197 | static void die(const char *str) ATTRIBUTE_NORETURN; |
198 | static void die(const char *str) |
199 | { |
200 | if (termios_set) |
201 | tcsetattr(0, TCSANOW, &termios); |
202 | bb_error_msg_and_die("%s", str); |
203 | } |
204 | |
205 | /* File-name data */ |
206 | enum { MAX_DEPTH = 32 }; |
207 | static int name_depth; |
208 | static char *current_name; |
209 | static char *name_component[MAX_DEPTH+1]; |
210 | |
211 | /* Wed Feb 9 15:17:06 MST 2000 */ |
212 | /* dynamically allocate name_list (instead of making it static) */ |
213 | static void alloc_current_name(void) |
214 | { |
215 | current_name = xmalloc(MAX_DEPTH * (BUFSIZ + 1)); |
216 | current_name[0] = '/'; |
217 | current_name[1] = '\0'; |
218 | name_component[0] = ¤t_name[0]; |
219 | } |
220 | |
221 | #if ENABLE_FEATURE_CLEAN_UP |
222 | /* execute this atexit() to deallocate name_list[] */ |
223 | /* piptigger was here */ |
224 | static void free_current_name(void) |
225 | { |
226 | free(current_name); |
227 | } |
228 | #endif |
229 | |
230 | static void push_filename(const char *name) |
231 | { |
232 | // /dir/dir/dir/file |
233 | // ^ ^ ^ |
234 | // [0] [1] [2] <-name_component[i] |
235 | if (name_depth < MAX_DEPTH) { |
236 | int len; |
237 | char *p = name_component[name_depth]; |
238 | *p++ = '/'; |
239 | len = sprintf(p, "%.*s", namelen, name); |
240 | name_component[name_depth + 1] = p + len; |
241 | } |
242 | name_depth++; |
243 | } |
244 | |
245 | static void pop_filename(void) |
246 | { |
247 | name_depth--; |
248 | if (name_depth < MAX_DEPTH) { |
249 | *name_component[name_depth] = '\0'; |
250 | if (!name_depth) { |
251 | current_name[0] = '/'; |
252 | current_name[1] = '\0'; |
253 | } |
254 | } |
255 | } |
256 | |
257 | static int ask(const char *string, int def) |
258 | { |
259 | int c; |
260 | |
261 | if (!repair) { |
262 | puts(""); |
263 | errors_uncorrected = 1; |
264 | return 0; |
265 | } |
266 | if (automatic) { |
267 | puts(""); |
268 | if (!def) |
269 | errors_uncorrected = 1; |
270 | return def; |
271 | } |
272 | printf(def ? "%s (y/n)? " : "%s (n/y)? ", string); |
273 | for (;;) { |
274 | fflush(stdout); |
275 | c = getchar(); |
276 | if (c == EOF) { |
277 | if (!def) |
278 | errors_uncorrected = 1; |
279 | return def; |
280 | } |
281 | c = toupper(c); |
282 | if (c == 'Y') { |
283 | def = 1; |
284 | break; |
285 | } else if (c == 'N') { |
286 | def = 0; |
287 | break; |
288 | } else if (c == ' ' || c == '\n') |
289 | break; |
290 | } |
291 | if (def) |
292 | printf("y\n"); |
293 | else { |
294 | printf("n\n"); |
295 | errors_uncorrected = 1; |
296 | } |
297 | return def; |
298 | } |
299 | |
300 | /* |
301 | * Make certain that we aren't checking a filesystem that is on a |
302 | * mounted partition. Code adapted from e2fsck, Copyright (C) 1993, |
303 | * 1994 Theodore Ts'o. Also licensed under GPL. |
304 | */ |
305 | static void check_mount(void) |
306 | { |
307 | FILE *f; |
308 | struct mntent *mnt; |
309 | int cont; |
310 | int fd; |
311 | |
312 | f = setmntent(MOUNTED, "r"); |
313 | if (f == NULL) |
314 | return; |
315 | while ((mnt = getmntent(f)) != NULL) |
316 | if (strcmp(device_name, mnt->mnt_fsname) == 0) |
317 | break; |
318 | endmntent(f); |
319 | if (!mnt) |
320 | return; |
321 | |
322 | /* |
323 | * If the root is mounted read-only, then /etc/mtab is |
324 | * probably not correct; so we won't issue a warning based on |
325 | * it. |
326 | */ |
327 | fd = open(MOUNTED, O_RDWR); |
328 | if (fd < 0 && errno == EROFS) |
329 | return; |
330 | close(fd); |
331 | |
332 | printf("%s is mounted. ", device_name); |
333 | cont = 0; |
334 | if (isatty(0) && isatty(1)) |
335 | cont = ask("Do you really want to continue", 0); |
336 | if (!cont) { |
337 | printf("Check aborted\n"); |
338 | exit(0); |
339 | } |
340 | } |
341 | |
342 | /* |
343 | * check_zone_nr checks to see that *nr is a valid zone nr. If it |
344 | * isn't, it will possibly be repaired. Check_zone_nr sets *corrected |
345 | * if an error was corrected, and returns the zone (0 for no zone |
346 | * or a bad zone-number). |
347 | */ |
348 | static int check_zone_nr2(uint32_t *nr, smallint *corrected) |
349 | { |
350 | const char *msg; |
351 | if (!*nr) |
352 | return 0; |
353 | if (*nr < FIRSTZONE) |
354 | msg = "< FIRSTZONE"; |
355 | else if (*nr >= ZONES) |
356 | msg = ">= ZONES"; |
357 | else |
358 | return *nr; |
359 | printf("Zone nr %s in file '%s'. ", msg, current_name); |
360 | if (ask("Remove block", 1)) { |
361 | *nr = 0; |
362 | *corrected = 1; |
363 | } |
364 | return 0; |
365 | } |
366 | |
367 | static int check_zone_nr(uint16_t *nr, smallint *corrected) |
368 | { |
369 | uint32_t nr32 = *nr; |
370 | int r = check_zone_nr2(&nr32, corrected); |
371 | *nr = (uint16_t)nr32; |
372 | return r; |
373 | } |
374 | |
375 | /* |
376 | * read-block reads block nr into the buffer at addr. |
377 | */ |
378 | static void read_block(unsigned nr, char *addr) |
379 | { |
380 | if (!nr) { |
381 | memset(addr, 0, BLOCK_SIZE); |
382 | return; |
383 | } |
384 | if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) { |
385 | printf("%s: cannot seek to block in file '%s'\n", |
386 | bb_msg_read_error, current_name); |
387 | errors_uncorrected = 1; |
388 | memset(addr, 0, BLOCK_SIZE); |
389 | } else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) { |
390 | printf("%s: bad block in file '%s'\n", |
391 | bb_msg_read_error, current_name); |
392 | errors_uncorrected = 1; |
393 | memset(addr, 0, BLOCK_SIZE); |
394 | } |
395 | } |
396 | |
397 | /* |
398 | * write_block writes block nr to disk. |
399 | */ |
400 | static void write_block(unsigned nr, char *addr) |
401 | { |
402 | if (!nr) |
403 | return; |
404 | if (nr < FIRSTZONE || nr >= ZONES) { |
405 | printf("Internal error: trying to write bad block\n" |
406 | "Write request ignored\n"); |
407 | errors_uncorrected = 1; |
408 | return; |
409 | } |
410 | if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) |
411 | die("seek failed in write_block"); |
412 | if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) { |
413 | printf("%s: bad block in file '%s'\n", |
414 | bb_msg_write_error, current_name); |
415 | errors_uncorrected = 1; |
416 | } |
417 | } |
418 | |
419 | /* |
420 | * map_block calculates the absolute block nr of a block in a file. |
421 | * It sets 'changed' if the inode has needed changing, and re-writes |
422 | * any indirect blocks with errors. |
423 | */ |
424 | static int map_block(struct minix1_inode *inode, unsigned blknr) |
425 | { |
426 | uint16_t ind[BLOCK_SIZE >> 1]; |
427 | uint16_t dind[BLOCK_SIZE >> 1]; |
428 | int block, result; |
429 | smallint blk_chg; |
430 | |
431 | if (blknr < 7) |
432 | return check_zone_nr(inode->i_zone + blknr, &changed); |
433 | blknr -= 7; |
434 | if (blknr < 512) { |
435 | block = check_zone_nr(inode->i_zone + 7, &changed); |
436 | read_block(block, (char *) ind); |
437 | blk_chg = 0; |
438 | result = check_zone_nr(blknr + ind, &blk_chg); |
439 | if (blk_chg) |
440 | write_block(block, (char *) ind); |
441 | return result; |
442 | } |
443 | blknr -= 512; |
444 | block = check_zone_nr(inode->i_zone + 8, &changed); |
445 | read_block(block, (char *) dind); |
446 | blk_chg = 0; |
447 | result = check_zone_nr(dind + (blknr / 512), &blk_chg); |
448 | if (blk_chg) |
449 | write_block(block, (char *) dind); |
450 | block = result; |
451 | read_block(block, (char *) ind); |
452 | blk_chg = 0; |
453 | result = check_zone_nr(ind + (blknr % 512), &blk_chg); |
454 | if (blk_chg) |
455 | write_block(block, (char *) ind); |
456 | return result; |
457 | } |
458 | |
459 | #if ENABLE_FEATURE_MINIX2 |
460 | static int map_block2(struct minix2_inode *inode, unsigned blknr) |
461 | { |
462 | uint32_t ind[BLOCK_SIZE >> 2]; |
463 | uint32_t dind[BLOCK_SIZE >> 2]; |
464 | uint32_t tind[BLOCK_SIZE >> 2]; |
465 | int block, result; |
466 | smallint blk_chg; |
467 | |
468 | if (blknr < 7) |
469 | return check_zone_nr2(inode->i_zone + blknr, &changed); |
470 | blknr -= 7; |
471 | if (blknr < 256) { |
472 | block = check_zone_nr2(inode->i_zone + 7, &changed); |
473 | read_block(block, (char *) ind); |
474 | blk_chg = 0; |
475 | result = check_zone_nr2(blknr + ind, &blk_chg); |
476 | if (blk_chg) |
477 | write_block(block, (char *) ind); |
478 | return result; |
479 | } |
480 | blknr -= 256; |
481 | if (blknr >= 256 * 256) { |
482 | block = check_zone_nr2(inode->i_zone + 8, &changed); |
483 | read_block(block, (char *) dind); |
484 | blk_chg = 0; |
485 | result = check_zone_nr2(dind + blknr / 256, &blk_chg); |
486 | if (blk_chg) |
487 | write_block(block, (char *) dind); |
488 | block = result; |
489 | read_block(block, (char *) ind); |
490 | blk_chg = 0; |
491 | result = check_zone_nr2(ind + blknr % 256, &blk_chg); |
492 | if (blk_chg) |
493 | write_block(block, (char *) ind); |
494 | return result; |
495 | } |
496 | blknr -= 256 * 256; |
497 | block = check_zone_nr2(inode->i_zone + 9, &changed); |
498 | read_block(block, (char *) tind); |
499 | blk_chg = 0; |
500 | result = check_zone_nr2(tind + blknr / (256 * 256), &blk_chg); |
501 | if (blk_chg) |
502 | write_block(block, (char *) tind); |
503 | block = result; |
504 | read_block(block, (char *) dind); |
505 | blk_chg = 0; |
506 | result = check_zone_nr2(dind + (blknr / 256) % 256, &blk_chg); |
507 | if (blk_chg) |
508 | write_block(block, (char *) dind); |
509 | block = result; |
510 | read_block(block, (char *) ind); |
511 | blk_chg = 0; |
512 | result = check_zone_nr2(ind + blknr % 256, &blk_chg); |
513 | if (blk_chg) |
514 | write_block(block, (char *) ind); |
515 | return result; |
516 | } |
517 | #endif |
518 | |
519 | static void write_super_block(void) |
520 | { |
521 | /* |
522 | * Set the state of the filesystem based on whether or not there |
523 | * are uncorrected errors. The filesystem valid flag is |
524 | * unconditionally set if we get this far. |
525 | */ |
526 | Super.s_state |= MINIX_VALID_FS | MINIX_ERROR_FS; |
527 | if (!errors_uncorrected) |
528 | Super.s_state &= ~MINIX_ERROR_FS; |
529 | |
530 | if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET)) |
531 | die("seek failed in write_super_block"); |
532 | if (BLOCK_SIZE != write(IN, super_block_buffer, BLOCK_SIZE)) |
533 | die("cannot write super-block"); |
534 | } |
535 | |
536 | static void write_tables(void) |
537 | { |
538 | write_super_block(); |
539 | |
540 | if (IMAPS * BLOCK_SIZE != write(IN, inode_map, IMAPS * BLOCK_SIZE)) |
541 | die("cannot write inode map"); |
542 | if (ZMAPS * BLOCK_SIZE != write(IN, zone_map, ZMAPS * BLOCK_SIZE)) |
543 | die("cannot write zone map"); |
544 | if (INODE_BUFFER_SIZE != write(IN, inode_buffer, INODE_BUFFER_SIZE)) |
545 | die("cannot write inodes"); |
546 | } |
547 | |
548 | static void get_dirsize(void) |
549 | { |
550 | int block; |
551 | char blk[BLOCK_SIZE]; |
552 | int size; |
553 | |
554 | #if ENABLE_FEATURE_MINIX2 |
555 | if (version2) |
556 | block = Inode2[MINIX_ROOT_INO].i_zone[0]; |
557 | else |
558 | #endif |
559 | block = Inode1[MINIX_ROOT_INO].i_zone[0]; |
560 | read_block(block, blk); |
561 | for (size = 16; size < BLOCK_SIZE; size <<= 1) { |
562 | if (strcmp(blk + size + 2, "..") == 0) { |
563 | dirsize = size; |
564 | namelen = size - 2; |
565 | return; |
566 | } |
567 | } |
568 | /* use defaults */ |
569 | } |
570 | |
571 | static void read_superblock(void) |
572 | { |
573 | if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET)) |
574 | die("seek failed"); |
575 | if (BLOCK_SIZE != read(IN, super_block_buffer, BLOCK_SIZE)) |
576 | die("cannot read super block"); |
577 | /* already initialized to: |
578 | namelen = 14; |
579 | dirsize = 16; |
580 | version2 = 0; |
581 | */ |
582 | if (MAGIC == MINIX1_SUPER_MAGIC) { |
583 | } else if (MAGIC == MINIX1_SUPER_MAGIC2) { |
584 | namelen = 30; |
585 | dirsize = 32; |
586 | #if ENABLE_FEATURE_MINIX2 |
587 | } else if (MAGIC == MINIX2_SUPER_MAGIC) { |
588 | version2 = 1; |
589 | } else if (MAGIC == MINIX2_SUPER_MAGIC2) { |
590 | namelen = 30; |
591 | dirsize = 32; |
592 | version2 = 1; |
593 | #endif |
594 | } else |
595 | die("bad magic number in super-block"); |
596 | if (ZONESIZE != 0 || BLOCK_SIZE != 1024) |
597 | die("only 1k blocks/zones supported"); |
598 | if (IMAPS * BLOCK_SIZE * 8 < INODES + 1) |
599 | die("bad s_imap_blocks field in super-block"); |
600 | if (ZMAPS * BLOCK_SIZE * 8 < ZONES - FIRSTZONE + 1) |
601 | die("bad s_zmap_blocks field in super-block"); |
602 | } |
603 | |
604 | static void read_tables(void) |
605 | { |
606 | inode_map = xzalloc(IMAPS * BLOCK_SIZE); |
607 | zone_map = xzalloc(ZMAPS * BLOCK_SIZE); |
608 | inode_buffer = xmalloc(INODE_BUFFER_SIZE); |
609 | inode_count = xmalloc(INODES + 1); |
610 | zone_count = xmalloc(ZONES); |
611 | if (IMAPS * BLOCK_SIZE != read(IN, inode_map, IMAPS * BLOCK_SIZE)) |
612 | die("cannot read inode map"); |
613 | if (ZMAPS * BLOCK_SIZE != read(IN, zone_map, ZMAPS * BLOCK_SIZE)) |
614 | die("cannot read zone map"); |
615 | if (INODE_BUFFER_SIZE != read(IN, inode_buffer, INODE_BUFFER_SIZE)) |
616 | die("cannot read inodes"); |
617 | if (NORM_FIRSTZONE != FIRSTZONE) { |
618 | printf("warning: firstzone!=norm_firstzone\n"); |
619 | errors_uncorrected = 1; |
620 | } |
621 | get_dirsize(); |
622 | if (show) { |
623 | printf("%u inodes\n" |
624 | "%u blocks\n" |
625 | "Firstdatazone=%u (%u)\n" |
626 | "Zonesize=%u\n" |
627 | "Maxsize=%u\n" |
628 | "Filesystem state=%u\n" |
629 | "namelen=%u\n\n", |
630 | INODES, |
631 | ZONES, |
632 | FIRSTZONE, NORM_FIRSTZONE, |
633 | BLOCK_SIZE << ZONESIZE, |
634 | MAXSIZE, |
635 | Super.s_state, |
636 | namelen); |
637 | } |
638 | } |
639 | |
640 | static struct minix1_inode *get_inode(unsigned nr) |
641 | { |
642 | struct minix1_inode *inode; |
643 | |
644 | if (!nr || nr > INODES) |
645 | return NULL; |
646 | total++; |
647 | inode = Inode1 + nr; |
648 | if (!inode_count[nr]) { |
649 | if (!inode_in_use(nr)) { |
650 | printf("Inode %d is marked as 'unused', but it is used " |
651 | "for file '%s'\n", nr, current_name); |
652 | if (repair) { |
653 | if (ask("Mark as 'in use'", 1)) |
654 | mark_inode(nr); |
655 | } else { |
656 | errors_uncorrected = 1; |
657 | } |
658 | } |
659 | if (S_ISDIR(inode->i_mode)) |
660 | directory++; |
661 | else if (S_ISREG(inode->i_mode)) |
662 | regular++; |
663 | else if (S_ISCHR(inode->i_mode)) |
664 | chardev++; |
665 | else if (S_ISBLK(inode->i_mode)) |
666 | blockdev++; |
667 | else if (S_ISLNK(inode->i_mode)) |
668 | symlinks++; |
669 | else if (S_ISSOCK(inode->i_mode)); |
670 | else if (S_ISFIFO(inode->i_mode)); |
671 | else { |
672 | printf("%s has mode %05o\n", current_name, inode->i_mode); |
673 | } |
674 | |
675 | } else |
676 | links++; |
677 | if (!++inode_count[nr]) { |
678 | printf("Warning: inode count too big\n"); |
679 | inode_count[nr]--; |
680 | errors_uncorrected = 1; |
681 | } |
682 | return inode; |
683 | } |
684 | |
685 | #if ENABLE_FEATURE_MINIX2 |
686 | static struct minix2_inode *get_inode2(unsigned nr) |
687 | { |
688 | struct minix2_inode *inode; |
689 | |
690 | if (!nr || nr > INODES) |
691 | return NULL; |
692 | total++; |
693 | inode = Inode2 + nr; |
694 | if (!inode_count[nr]) { |
695 | if (!inode_in_use(nr)) { |
696 | printf("Inode %d is marked as 'unused', but it is used " |
697 | "for file '%s'\n", nr, current_name); |
698 | if (repair) { |
699 | if (ask("Mark as 'in use'", 1)) |
700 | mark_inode(nr); |
701 | else |
702 | errors_uncorrected = 1; |
703 | } |
704 | } |
705 | if (S_ISDIR(inode->i_mode)) |
706 | directory++; |
707 | else if (S_ISREG(inode->i_mode)) |
708 | regular++; |
709 | else if (S_ISCHR(inode->i_mode)) |
710 | chardev++; |
711 | else if (S_ISBLK(inode->i_mode)) |
712 | blockdev++; |
713 | else if (S_ISLNK(inode->i_mode)) |
714 | symlinks++; |
715 | else if (S_ISSOCK(inode->i_mode)); |
716 | else if (S_ISFIFO(inode->i_mode)); |
717 | else { |
718 | printf("%s has mode %05o\n", current_name, inode->i_mode); |
719 | } |
720 | } else |
721 | links++; |
722 | if (!++inode_count[nr]) { |
723 | printf("Warning: inode count too big\n"); |
724 | inode_count[nr]--; |
725 | errors_uncorrected = 1; |
726 | } |
727 | return inode; |
728 | } |
729 | #endif |
730 | |
731 | static void check_root(void) |
732 | { |
733 | struct minix1_inode *inode = Inode1 + MINIX_ROOT_INO; |
734 | |
735 | if (!inode || !S_ISDIR(inode->i_mode)) |
736 | die("root inode isn't a directory"); |
737 | } |
738 | |
739 | #if ENABLE_FEATURE_MINIX2 |
740 | static void check_root2(void) |
741 | { |
742 | struct minix2_inode *inode = Inode2 + MINIX_ROOT_INO; |
743 | |
744 | if (!inode || !S_ISDIR(inode->i_mode)) |
745 | die("root inode isn't a directory"); |
746 | } |
747 | #else |
748 | void check_root2(void); |
749 | #endif |
750 | |
751 | static int add_zone(uint16_t *znr, smallint *corrected) |
752 | { |
753 | int result; |
754 | int block; |
755 | |
756 | result = 0; |
757 | block = check_zone_nr(znr, corrected); |
758 | if (!block) |
759 | return 0; |
760 | if (zone_count[block]) { |
761 | printf("Already used block is reused in file '%s'. ", |
762 | current_name); |
763 | if (ask("Clear", 1)) { |
764 | *znr = 0; |
765 | block = 0; |
766 | *corrected = 1; |
767 | return 0; |
768 | } |
769 | } |
770 | if (!zone_in_use(block)) { |
771 | printf("Block %d in file '%s' is marked as 'unused'. ", |
772 | block, current_name); |
773 | if (ask("Correct", 1)) |
774 | mark_zone(block); |
775 | } |
776 | if (!++zone_count[block]) |
777 | zone_count[block]--; |
778 | return block; |
779 | } |
780 | |
781 | #if ENABLE_FEATURE_MINIX2 |
782 | static int add_zone2(uint32_t *znr, smallint *corrected) |
783 | { |
784 | int result; |
785 | int block; |
786 | |
787 | result = 0; |
788 | block = check_zone_nr2(znr, corrected); |
789 | if (!block) |
790 | return 0; |
791 | if (zone_count[block]) { |
792 | printf("Already used block is reused in file '%s'. ", |
793 | current_name); |
794 | if (ask("Clear", 1)) { |
795 | *znr = 0; |
796 | block = 0; |
797 | *corrected = 1; |
798 | return 0; |
799 | } |
800 | } |
801 | if (!zone_in_use(block)) { |
802 | printf("Block %d in file '%s' is marked as 'unused'. ", |
803 | block, current_name); |
804 | if (ask("Correct", 1)) |
805 | mark_zone(block); |
806 | } |
807 | if (!++zone_count[block]) |
808 | zone_count[block]--; |
809 | return block; |
810 | } |
811 | #endif |
812 | |
813 | static void add_zone_ind(uint16_t *znr, smallint *corrected) |
814 | { |
815 | static char blk[BLOCK_SIZE]; |
816 | int i; |
817 | int block; |
818 | smallint chg_blk = 0; |
819 | |
820 | block = add_zone(znr, corrected); |
821 | if (!block) |
822 | return; |
823 | read_block(block, blk); |
824 | for (i = 0; i < (BLOCK_SIZE >> 1); i++) |
825 | add_zone(i + (uint16_t *) blk, &chg_blk); |
826 | if (chg_blk) |
827 | write_block(block, blk); |
828 | } |
829 | |
830 | #if ENABLE_FEATURE_MINIX2 |
831 | static void add_zone_ind2(uint32_t *znr, smallint *corrected) |
832 | { |
833 | static char blk[BLOCK_SIZE]; |
834 | int i; |
835 | int block; |
836 | smallint chg_blk = 0; |
837 | |
838 | block = add_zone2(znr, corrected); |
839 | if (!block) |
840 | return; |
841 | read_block(block, blk); |
842 | for (i = 0; i < BLOCK_SIZE >> 2; i++) |
843 | add_zone2(i + (uint32_t *) blk, &chg_blk); |
844 | if (chg_blk) |
845 | write_block(block, blk); |
846 | } |
847 | #endif |
848 | |
849 | static void add_zone_dind(uint16_t *znr, smallint *corrected) |
850 | { |
851 | static char blk[BLOCK_SIZE]; |
852 | int i; |
853 | int block; |
854 | smallint chg_blk = 0; |
855 | |
856 | block = add_zone(znr, corrected); |
857 | if (!block) |
858 | return; |
859 | read_block(block, blk); |
860 | for (i = 0; i < (BLOCK_SIZE >> 1); i++) |
861 | add_zone_ind(i + (uint16_t *) blk, &chg_blk); |
862 | if (chg_blk) |
863 | write_block(block, blk); |
864 | } |
865 | |
866 | #if ENABLE_FEATURE_MINIX2 |
867 | static void add_zone_dind2(uint32_t *znr, smallint *corrected) |
868 | { |
869 | static char blk[BLOCK_SIZE]; |
870 | int i; |
871 | int block; |
872 | smallint chg_blk = 0; |
873 | |
874 | block = add_zone2(znr, corrected); |
875 | if (!block) |
876 | return; |
877 | read_block(block, blk); |
878 | for (i = 0; i < BLOCK_SIZE >> 2; i++) |
879 | add_zone_ind2(i + (uint32_t *) blk, &chg_blk); |
880 | if (chg_blk) |
881 | write_block(block, blk); |
882 | } |
883 | |
884 | static void add_zone_tind2(uint32_t *znr, smallint *corrected) |
885 | { |
886 | static char blk[BLOCK_SIZE]; |
887 | int i; |
888 | int block; |
889 | smallint chg_blk = 0; |
890 | |
891 | block = add_zone2(znr, corrected); |
892 | if (!block) |
893 | return; |
894 | read_block(block, blk); |
895 | for (i = 0; i < BLOCK_SIZE >> 2; i++) |
896 | add_zone_dind2(i + (uint32_t *) blk, &chg_blk); |
897 | if (chg_blk) |
898 | write_block(block, blk); |
899 | } |
900 | #endif |
901 | |
902 | static void check_zones(unsigned i) |
903 | { |
904 | struct minix1_inode *inode; |
905 | |
906 | if (!i || i > INODES) |
907 | return; |
908 | if (inode_count[i] > 1) /* have we counted this file already? */ |
909 | return; |
910 | inode = Inode1 + i; |
911 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
912 | !S_ISLNK(inode->i_mode)) return; |
913 | for (i = 0; i < 7; i++) |
914 | add_zone(i + inode->i_zone, &changed); |
915 | add_zone_ind(7 + inode->i_zone, &changed); |
916 | add_zone_dind(8 + inode->i_zone, &changed); |
917 | } |
918 | |
919 | #if ENABLE_FEATURE_MINIX2 |
920 | static void check_zones2(unsigned i) |
921 | { |
922 | struct minix2_inode *inode; |
923 | |
924 | if (!i || i > INODES) |
925 | return; |
926 | if (inode_count[i] > 1) /* have we counted this file already? */ |
927 | return; |
928 | inode = Inode2 + i; |
929 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) |
930 | && !S_ISLNK(inode->i_mode)) |
931 | return; |
932 | for (i = 0; i < 7; i++) |
933 | add_zone2(i + inode->i_zone, &changed); |
934 | add_zone_ind2(7 + inode->i_zone, &changed); |
935 | add_zone_dind2(8 + inode->i_zone, &changed); |
936 | add_zone_tind2(9 + inode->i_zone, &changed); |
937 | } |
938 | #endif |
939 | |
940 | static void check_file(struct minix1_inode *dir, unsigned offset) |
941 | { |
942 | static char blk[BLOCK_SIZE]; |
943 | struct minix1_inode *inode; |
944 | int ino; |
945 | char *name; |
946 | int block; |
947 | |
948 | block = map_block(dir, offset / BLOCK_SIZE); |
949 | read_block(block, blk); |
950 | name = blk + (offset % BLOCK_SIZE) + 2; |
951 | ino = *(uint16_t *) (name - 2); |
952 | if (ino > INODES) { |
953 | printf("%s contains a bad inode number for file '%.*s'. ", |
954 | current_name, namelen, name); |
955 | if (ask("Remove", 1)) { |
956 | *(uint16_t *) (name - 2) = 0; |
957 | write_block(block, blk); |
958 | } |
959 | ino = 0; |
960 | } |
961 | push_filename(name); |
962 | inode = get_inode(ino); |
963 | pop_filename(); |
964 | if (!offset) { |
965 | if (inode && LONE_CHAR(name, '.')) |
966 | return; |
967 | printf("%s: bad directory: '.' isn't first\n", current_name); |
968 | errors_uncorrected = 1; |
969 | } |
970 | if (offset == dirsize) { |
971 | if (inode && strcmp("..", name) == 0) |
972 | return; |
973 | printf("%s: bad directory: '..' isn't second\n", current_name); |
974 | errors_uncorrected = 1; |
975 | } |
976 | if (!inode) |
977 | return; |
978 | push_filename(name); |
979 | if (list) { |
980 | if (verbose) |
981 | printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks); |
982 | printf("%s%s\n", current_name, S_ISDIR(inode->i_mode) ? ":" : ""); |
983 | } |
984 | check_zones(ino); |
985 | if (inode && S_ISDIR(inode->i_mode)) |
986 | recursive_check(ino); |
987 | pop_filename(); |
988 | } |
989 | |
990 | #if ENABLE_FEATURE_MINIX2 |
991 | static void check_file2(struct minix2_inode *dir, unsigned offset) |
992 | { |
993 | static char blk[BLOCK_SIZE]; |
994 | struct minix2_inode *inode; |
995 | int ino; |
996 | char *name; |
997 | int block; |
998 | |
999 | block = map_block2(dir, offset / BLOCK_SIZE); |
1000 | read_block(block, blk); |
1001 | name = blk + (offset % BLOCK_SIZE) + 2; |
1002 | ino = *(uint16_t *) (name - 2); |
1003 | if (ino > INODES) { |
1004 | printf("%s contains a bad inode number for file '%.*s'. ", |
1005 | current_name, namelen, name); |
1006 | if (ask("Remove", 1)) { |
1007 | *(uint16_t *) (name - 2) = 0; |
1008 | write_block(block, blk); |
1009 | } |
1010 | ino = 0; |
1011 | } |
1012 | push_filename(name); |
1013 | inode = get_inode2(ino); |
1014 | pop_filename(); |
1015 | if (!offset) { |
1016 | if (inode && LONE_CHAR(name, '.')) |
1017 | return; |
1018 | printf("%s: bad directory: '.' isn't first\n", current_name); |
1019 | errors_uncorrected = 1; |
1020 | } |
1021 | if (offset == dirsize) { |
1022 | if (inode && strcmp("..", name) == 0) |
1023 | return; |
1024 | printf("%s: bad directory: '..' isn't second\n", current_name); |
1025 | errors_uncorrected = 1; |
1026 | } |
1027 | if (!inode) |
1028 | return; |
1029 | push_filename(name); |
1030 | if (list) { |
1031 | if (verbose) |
1032 | printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks); |
1033 | printf("%s%s\n", current_name, S_ISDIR(inode->i_mode) ? ":" : ""); |
1034 | } |
1035 | check_zones2(ino); |
1036 | if (inode && S_ISDIR(inode->i_mode)) |
1037 | recursive_check2(ino); |
1038 | pop_filename(); |
1039 | } |
1040 | #endif |
1041 | |
1042 | static void recursive_check(unsigned ino) |
1043 | { |
1044 | struct minix1_inode *dir; |
1045 | unsigned offset; |
1046 | |
1047 | dir = Inode1 + ino; |
1048 | if (!S_ISDIR(dir->i_mode)) |
1049 | die("internal error"); |
1050 | if (dir->i_size < 2 * dirsize) { |
1051 | printf("%s: bad directory: size<32", current_name); |
1052 | errors_uncorrected = 1; |
1053 | } |
1054 | for (offset = 0; offset < dir->i_size; offset += dirsize) |
1055 | check_file(dir, offset); |
1056 | } |
1057 | |
1058 | #if ENABLE_FEATURE_MINIX2 |
1059 | static void recursive_check2(unsigned ino) |
1060 | { |
1061 | struct minix2_inode *dir; |
1062 | unsigned offset; |
1063 | |
1064 | dir = Inode2 + ino; |
1065 | if (!S_ISDIR(dir->i_mode)) |
1066 | die("internal error"); |
1067 | if (dir->i_size < 2 * dirsize) { |
1068 | printf("%s: bad directory: size<32", current_name); |
1069 | errors_uncorrected = 1; |
1070 | } |
1071 | for (offset = 0; offset < dir->i_size; offset += dirsize) |
1072 | check_file2(dir, offset); |
1073 | } |
1074 | #endif |
1075 | |
1076 | static int bad_zone(int i) |
1077 | { |
1078 | char buffer[BLOCK_SIZE]; |
1079 | |
1080 | if (BLOCK_SIZE * i != lseek(IN, BLOCK_SIZE * i, SEEK_SET)) |
1081 | die("seek failed in bad_zone"); |
1082 | return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE)); |
1083 | } |
1084 | |
1085 | static void check_counts(void) |
1086 | { |
1087 | int i; |
1088 | |
1089 | for (i = 1; i <= INODES; i++) { |
1090 | if (warn_mode && Inode1[i].i_mode && !inode_in_use(i)) { |
1091 | printf("Inode %d has non-zero mode. ", i); |
1092 | if (ask("Clear", 1)) { |
1093 | Inode1[i].i_mode = 0; |
1094 | changed = 1; |
1095 | } |
1096 | } |
1097 | if (!inode_count[i]) { |
1098 | if (!inode_in_use(i)) |
1099 | continue; |
1100 | printf("Unused inode %d is marked as 'used' in the bitmap. ", i); |
1101 | if (ask("Clear", 1)) |
1102 | unmark_inode(i); |
1103 | continue; |
1104 | } |
1105 | if (!inode_in_use(i)) { |
1106 | printf("Inode %d is used, but marked as 'unused' in the bitmap. ", i); |
1107 | if (ask("Set", 1)) |
1108 | mark_inode(i); |
1109 | } |
1110 | if (Inode1[i].i_nlinks != inode_count[i]) { |
1111 | printf("Inode %d (mode=%07o), i_nlinks=%d, counted=%d. ", |
1112 | i, Inode1[i].i_mode, Inode1[i].i_nlinks, inode_count[i]); |
1113 | if (ask("Set i_nlinks to count", 1)) { |
1114 | Inode1[i].i_nlinks = inode_count[i]; |
1115 | changed = 1; |
1116 | } |
1117 | } |
1118 | } |
1119 | for (i = FIRSTZONE; i < ZONES; i++) { |
1120 | if (zone_in_use(i) == zone_count[i]) |
1121 | continue; |
1122 | if (!zone_count[i]) { |
1123 | if (bad_zone(i)) |
1124 | continue; |
1125 | printf("Zone %d is marked 'in use', but no file uses it. ", i); |
1126 | if (ask("Unmark", 1)) |
1127 | unmark_zone(i); |
1128 | continue; |
1129 | } |
1130 | printf("Zone %d: %sin use, counted=%d\n", |
1131 | i, zone_in_use(i) ? "" : "not ", zone_count[i]); |
1132 | } |
1133 | } |
1134 | |
1135 | #if ENABLE_FEATURE_MINIX2 |
1136 | static void check_counts2(void) |
1137 | { |
1138 | int i; |
1139 | |
1140 | for (i = 1; i <= INODES; i++) { |
1141 | if (warn_mode && Inode2[i].i_mode && !inode_in_use(i)) { |
1142 | printf("Inode %d has non-zero mode. ", i); |
1143 | if (ask("Clear", 1)) { |
1144 | Inode2[i].i_mode = 0; |
1145 | changed = 1; |
1146 | } |
1147 | } |
1148 | if (!inode_count[i]) { |
1149 | if (!inode_in_use(i)) |
1150 | continue; |
1151 | printf("Unused inode %d is marked as 'used' in the bitmap. ", i); |
1152 | if (ask("Clear", 1)) |
1153 | unmark_inode(i); |
1154 | continue; |
1155 | } |
1156 | if (!inode_in_use(i)) { |
1157 | printf("Inode %d is used, but marked as 'unused' in the bitmap. ", i); |
1158 | if (ask("Set", 1)) |
1159 | mark_inode(i); |
1160 | } |
1161 | if (Inode2[i].i_nlinks != inode_count[i]) { |
1162 | printf("Inode %d (mode=%07o), i_nlinks=%d, counted=%d. ", |
1163 | i, Inode2[i].i_mode, Inode2[i].i_nlinks, |
1164 | inode_count[i]); |
1165 | if (ask("Set i_nlinks to count", 1)) { |
1166 | Inode2[i].i_nlinks = inode_count[i]; |
1167 | changed = 1; |
1168 | } |
1169 | } |
1170 | } |
1171 | for (i = FIRSTZONE; i < ZONES; i++) { |
1172 | if (zone_in_use(i) == zone_count[i]) |
1173 | continue; |
1174 | if (!zone_count[i]) { |
1175 | if (bad_zone(i)) |
1176 | continue; |
1177 | printf("Zone %d is marked 'in use', but no file uses it. ", i); |
1178 | if (ask("Unmark", 1)) |
1179 | unmark_zone(i); |
1180 | continue; |
1181 | } |
1182 | printf("Zone %d: %sin use, counted=%d\n", |
1183 | i, zone_in_use(i) ? "" : "not ", zone_count[i]); |
1184 | } |
1185 | } |
1186 | #endif |
1187 | |
1188 | static void check(void) |
1189 | { |
1190 | memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count)); |
1191 | memset(zone_count, 0, ZONES * sizeof(*zone_count)); |
1192 | check_zones(MINIX_ROOT_INO); |
1193 | recursive_check(MINIX_ROOT_INO); |
1194 | check_counts(); |
1195 | } |
1196 | |
1197 | #if ENABLE_FEATURE_MINIX2 |
1198 | static void check2(void) |
1199 | { |
1200 | memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count)); |
1201 | memset(zone_count, 0, ZONES * sizeof(*zone_count)); |
1202 | check_zones2(MINIX_ROOT_INO); |
1203 | recursive_check2(MINIX_ROOT_INO); |
1204 | check_counts2(); |
1205 | } |
1206 | #else |
1207 | void check2(void); |
1208 | #endif |
1209 | |
1210 | int fsck_minix_main(int argc, char **argv) |
1211 | { |
1212 | struct termios tmp; |
1213 | int retcode = 0; |
1214 | |
1215 | xfunc_error_retval = 8; |
1216 | |
1217 | alloc_current_name(); |
1218 | #if ENABLE_FEATURE_CLEAN_UP |
1219 | /* Don't bother to free memory. Exit does |
1220 | * that automagically, so we can save a few bytes */ |
1221 | atexit(free_current_name); |
1222 | #endif |
1223 | |
1224 | if (INODE_SIZE1 * MINIX1_INODES_PER_BLOCK != BLOCK_SIZE) |
1225 | die("bad inode size"); |
1226 | #if ENABLE_FEATURE_MINIX2 |
1227 | if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE) |
1228 | die("bad v2 inode size"); |
1229 | #endif |
1230 | while (--argc != 0) { |
1231 | argv++; |
1232 | if (argv[0][0] != '-') { |
1233 | if (device_name) |
1234 | bb_show_usage(); |
1235 | device_name = argv[0]; |
1236 | } else { |
1237 | while (*++argv[0]) { |
1238 | switch (argv[0][0]) { |
1239 | case 'l': |
1240 | list = 1; |
1241 | break; |
1242 | case 'a': |
1243 | automatic = 1; |
1244 | repair = 1; |
1245 | break; |
1246 | case 'r': |
1247 | automatic = 0; |
1248 | repair = 1; |
1249 | break; |
1250 | case 'v': |
1251 | verbose = 1; |
1252 | break; |
1253 | case 's': |
1254 | show = 1; |
1255 | break; |
1256 | case 'm': |
1257 | warn_mode = 1; |
1258 | break; |
1259 | case 'f': |
1260 | force = 1; |
1261 | break; |
1262 | default: |
1263 | bb_show_usage(); |
1264 | } |
1265 | } |
1266 | } |
1267 | } |
1268 | if (!device_name) |
1269 | bb_show_usage(); |
1270 | |
1271 | check_mount(); /* trying to check a mounted filesystem? */ |
1272 | if (repair && !automatic) { |
1273 | if (!isatty(0) || !isatty(1)) |
1274 | die("need terminal for interactive repairs"); |
1275 | } |
1276 | IN = xopen(device_name, repair ? O_RDWR : O_RDONLY); |
1277 | |
1278 | /*sync(); paranoia? */ |
1279 | read_superblock(); |
1280 | |
1281 | /* |
1282 | * Determine whether or not we should continue with the checking. |
1283 | * This is based on the status of the filesystem valid and error |
1284 | * flags and whether or not the -f switch was specified on the |
1285 | * command line. |
1286 | */ |
1287 | printf("%s, "PROGRAM_VERSION"\n", applet_name); |
1288 | |
1289 | if (!(Super.s_state & MINIX_ERROR_FS) |
1290 | && (Super.s_state & MINIX_VALID_FS) && !force |
1291 | ) { |
1292 | if (repair) |
1293 | printf("%s is clean, check is skipped\n", device_name); |
1294 | return 0; |
1295 | } else if (force) |
1296 | printf("Forcing filesystem check on %s\n", device_name); |
1297 | else if (repair) |
1298 | printf("Filesystem on %s is dirty, needs checking\n", |
1299 | device_name); |
1300 | |
1301 | read_tables(); |
1302 | |
1303 | if (repair && !automatic) { |
1304 | tcgetattr(0, &termios); |
1305 | tmp = termios; |
1306 | tmp.c_lflag &= ~(ICANON | ECHO); |
1307 | tcsetattr(0, TCSANOW, &tmp); |
1308 | termios_set = 1; |
1309 | } |
1310 | |
1311 | if (version2) { |
1312 | check_root2(); |
1313 | check2(); |
1314 | } else { |
1315 | check_root(); |
1316 | check(); |
1317 | } |
1318 | |
1319 | if (verbose) { |
1320 | int i, free_cnt; |
1321 | |
1322 | for (i = 1, free_cnt = 0; i <= INODES; i++) |
1323 | if (!inode_in_use(i)) |
1324 | free_cnt++; |
1325 | printf("\n%6u inodes used (%u%%)\n", (INODES - free_cnt), |
1326 | 100 * (INODES - free_cnt) / INODES); |
1327 | for (i = FIRSTZONE, free_cnt = 0; i < ZONES; i++) |
1328 | if (!zone_in_use(i)) |
1329 | free_cnt++; |
1330 | printf("%6u zones used (%u%%)\n\n" |
1331 | "%6u regular files\n" |
1332 | "%6u directories\n" |
1333 | "%6u character device files\n" |
1334 | "%6u block device files\n" |
1335 | "%6u links\n" |
1336 | "%6u symbolic links\n" |
1337 | "------\n" |
1338 | "%6u files\n", |
1339 | (ZONES - free_cnt), 100 * (ZONES - free_cnt) / ZONES, |
1340 | regular, directory, chardev, blockdev, |
1341 | links - 2 * directory + 1, symlinks, |
1342 | total - 2 * directory + 1); |
1343 | } |
1344 | if (changed) { |
1345 | write_tables(); |
1346 | printf("FILE SYSTEM HAS BEEN CHANGED\n"); |
1347 | sync(); |
1348 | } else if (repair) |
1349 | write_super_block(); |
1350 | |
1351 | if (repair && !automatic) |
1352 | tcsetattr(0, TCSANOW, &termios); |
1353 | |
1354 | if (changed) |
1355 | retcode += 3; |
1356 | if (errors_uncorrected) |
1357 | retcode += 4; |
1358 | return retcode; |
1359 | } |