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1/* vi: set sw=4 ts=4: */
2/*
3 * mkfs.c - make a linux (minix) file-system.
4 *
5 * (C) 1991 Linus Torvalds. This file may be redistributed as per
6 * the Linux copyright.
7 */
8
9/*
10 * DD.MM.YY
11 *
12 * 24.11.91 - Time began. Used the fsck sources to get started.
13 *
14 * 25.11.91 - Corrected some bugs. Added support for ".badblocks"
15 * The algorithm for ".badblocks" is a bit weird, but
16 * it should work. Oh, well.
17 *
18 * 25.01.92 - Added the -l option for getting the list of bad blocks
19 * out of a named file. (Dave Rivers, rivers@ponds.uucp)
20 *
21 * 28.02.92 - Added %-information when using -c.
22 *
23 * 28.02.93 - Added support for other namelengths than the original
24 * 14 characters so that I can test the new kernel routines..
25 *
26 * 09.10.93 - Make exit status conform to that required by fsutil
27 * (Rik Faith, faith@cs.unc.edu)
28 *
29 * 31.10.93 - Added inode request feature, for backup floppies: use
30 * 32 inodes, for a news partition use more.
31 * (Scott Heavner, sdh@po.cwru.edu)
32 *
33 * 03.01.94 - Added support for file system valid flag.
34 * (Dr. Wettstein, greg%wind.uucp@plains.nodak.edu)
35 *
36 * 30.10.94 - added support for v2 filesystem
37 * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
38 *
39 * 09.11.94 - Added test to prevent overwrite of mounted fs adapted
40 * from Theodore Ts'o's (tytso@athena.mit.edu) mke2fs
41 * program. (Daniel Quinlan, quinlan@yggdrasil.com)
42 *
43 * 03.20.95 - Clear first 512 bytes of filesystem to make certain that
44 * the filesystem is not misidentified as a MS-DOS FAT filesystem.
45 * (Daniel Quinlan, quinlan@yggdrasil.com)
46 *
47 * 02.07.96 - Added small patch from Russell King to make the program a
48 * good deal more portable (janl@math.uio.no)
49 *
50 * Usage: mkfs [-c | -l filename ] [-v] [-nXX] [-iXX] device [size-in-blocks]
51 *
52 * -c for readablility checking (SLOW!)
53 * -l for getting a list of bad blocks from a file.
54 * -n for namelength (currently the kernel only uses 14 or 30)
55 * -i for number of inodes
56 * -v for v2 filesystem
57 *
58 * The device may be a block device or a image of one, but this isn't
59 * enforced (but it's not much fun on a character device :-).
60 *
61 * Modified for BusyBox by Erik Andersen <andersen@debian.org> --
62 * removed getopt based parser and added a hand rolled one.
63 */
64
65#include <stdio.h>
66#include <time.h>
67#include <unistd.h>
68#include <string.h>
69#include <signal.h>
70#include <fcntl.h>
71#include <ctype.h>
72#include <stdlib.h>
73#include <termios.h>
74#include <sys/ioctl.h>
75#include <sys/param.h>
76#include <mntent.h>
77#include "busybox.h"
78
79#define MINIX_ROOT_INO 1
80#define MINIX_LINK_MAX 250
81#define MINIX2_LINK_MAX 65530
82
83#define MINIX_I_MAP_SLOTS 8
84#define MINIX_Z_MAP_SLOTS 64
85#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
86#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
87#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */
88#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */
89#define MINIX_VALID_FS 0x0001 /* Clean fs. */
90#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
91
92#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
93#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode)))
94
95#define MINIX_V1 0x0001 /* original minix fs */
96#define MINIX_V2 0x0002 /* minix V2 fs */
97
98#define INODE_VERSION(inode) inode->i_sb->u.minix_sb.s_version
99
100/*
101 * This is the original minix inode layout on disk.
102 * Note the 8-bit gid and atime and ctime.
103 */
104struct minix_inode {
105 u_int16_t i_mode;
106 u_int16_t i_uid;
107 u_int32_t i_size;
108 u_int32_t i_time;
109 u_int8_t i_gid;
110 u_int8_t i_nlinks;
111 u_int16_t i_zone[9];
112};
113
114/*
115 * The new minix inode has all the time entries, as well as
116 * long block numbers and a third indirect block (7+1+1+1
117 * instead of 7+1+1). Also, some previously 8-bit values are
118 * now 16-bit. The inode is now 64 bytes instead of 32.
119 */
120struct minix2_inode {
121 u_int16_t i_mode;
122 u_int16_t i_nlinks;
123 u_int16_t i_uid;
124 u_int16_t i_gid;
125 u_int32_t i_size;
126 u_int32_t i_atime;
127 u_int32_t i_mtime;
128 u_int32_t i_ctime;
129 u_int32_t i_zone[10];
130};
131
132/*
133 * minix super-block data on disk
134 */
135struct minix_super_block {
136 u_int16_t s_ninodes;
137 u_int16_t s_nzones;
138 u_int16_t s_imap_blocks;
139 u_int16_t s_zmap_blocks;
140 u_int16_t s_firstdatazone;
141 u_int16_t s_log_zone_size;
142 u_int32_t s_max_size;
143 u_int16_t s_magic;
144 u_int16_t s_state;
145 u_int32_t s_zones;
146};
147
148struct minix_dir_entry {
149 u_int16_t inode;
150 char name[0];
151};
152
153#define BLOCK_SIZE_BITS 10
154#define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
155
156#define NAME_MAX 255 /* # chars in a file name */
157
158#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
159
160#define MINIX_VALID_FS 0x0001 /* Clean fs. */
161#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
162
163#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
164#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
165
166#ifndef BLKGETSIZE
167#define BLKGETSIZE _IO(0x12,96) /* return device size */
168#endif
169
170
171#ifndef __linux__
172#define volatile
173#endif
174
175#define MINIX_ROOT_INO 1
176#define MINIX_BAD_INO 2
177
178#define TEST_BUFFER_BLOCKS 16
179#define MAX_GOOD_BLOCKS 512
180
181#define UPPER(size,n) (((size)+((n)-1))/(n))
182#define INODE_SIZE (sizeof(struct minix_inode))
183#ifdef BB_FEATURE_MINIX2
184#define INODE_SIZE2 (sizeof(struct minix2_inode))
185#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
186 : MINIX_INODES_PER_BLOCK))
187#else
188#define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
189#endif
190#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
191
192#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
193
194static char *device_name = NULL;
195static int DEV = -1;
196static long BLOCKS = 0;
197static int check = 0;
198static int badblocks = 0;
199static int namelen = 30; /* default (changed to 30, per Linus's
200
201 suggestion, Sun Nov 21 08:05:07 1993) */
202static int dirsize = 32;
203static int magic = MINIX_SUPER_MAGIC2;
204static int version2 = 0;
205
206static char root_block[BLOCK_SIZE] = "\0";
207
208static char *inode_buffer = NULL;
209
210#define Inode (((struct minix_inode *) inode_buffer)-1)
211#ifdef BB_FEATURE_MINIX2
212#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
213#endif
214static char super_block_buffer[BLOCK_SIZE];
215static char boot_block_buffer[512];
216
217#define Super (*(struct minix_super_block *)super_block_buffer)
218#define INODES ((unsigned long)Super.s_ninodes)
219#ifdef BB_FEATURE_MINIX2
220#define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
221#else
222#define ZONES ((unsigned long)(Super.s_nzones))
223#endif
224#define IMAPS ((unsigned long)Super.s_imap_blocks)
225#define ZMAPS ((unsigned long)Super.s_zmap_blocks)
226#define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
227#define ZONESIZE ((unsigned long)Super.s_log_zone_size)
228#define MAXSIZE ((unsigned long)Super.s_max_size)
229#define MAGIC (Super.s_magic)
230#define NORM_FIRSTZONE (2+IMAPS+ZMAPS+INODE_BLOCKS)
231
232static char *inode_map;
233static char *zone_map;
234
235static unsigned short good_blocks_table[MAX_GOOD_BLOCKS];
236static int used_good_blocks = 0;
237static unsigned long req_nr_inodes = 0;
238
239static inline int bit(char * a,unsigned int i)
240{
241 return (a[i >> 3] & (1<<(i & 7))) != 0;
242}
243#define inode_in_use(x) (bit(inode_map,(x)))
244#define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1))
245
246#define mark_inode(x) (setbit(inode_map,(x)))
247#define unmark_inode(x) (clrbit(inode_map,(x)))
248
249#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1))
250#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1))
251
252/*
253 * Check to make certain that our new filesystem won't be created on
254 * an already mounted partition. Code adapted from mke2fs, Copyright
255 * (C) 1994 Theodore Ts'o. Also licensed under GPL.
256 */
257static void check_mount(void)
258{
259 FILE *f;
260 struct mntent *mnt;
261
262 if ((f = setmntent(MOUNTED, "r")) == NULL)
263 return;
264 while ((mnt = getmntent(f)) != NULL)
265 if (strcmp(device_name, mnt->mnt_fsname) == 0)
266 break;
267 endmntent(f);
268 if (!mnt)
269 return;
270
271 error_msg_and_die("%s is mounted; will not make a filesystem here!", device_name);
272}
273
274static long valid_offset(int fd, int offset)
275{
276 char ch;
277
278 if (lseek(fd, offset, 0) < 0)
279 return 0;
280 if (read(fd, &ch, 1) < 1)
281 return 0;
282 return 1;
283}
284
285static int count_blocks(int fd)
286{
287 int high, low;
288
289 low = 0;
290 for (high = 1; valid_offset(fd, high); high *= 2)
291 low = high;
292 while (low < high - 1) {
293 const int mid = (low + high) / 2;
294
295 if (valid_offset(fd, mid))
296 low = mid;
297 else
298 high = mid;
299 }
300 valid_offset(fd, 0);
301 return (low + 1);
302}
303
304static int get_size(const char *file)
305{
306 int fd;
307 long size;
308
309 if ((fd = open(file, O_RDWR)) < 0)
310 perror_msg_and_die("%s", file);
311 if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
312 close(fd);
313 return (size * 512);
314 }
315
316 size = count_blocks(fd);
317 close(fd);
318 return size;
319}
320
321static void write_tables(void)
322{
323 /* Mark the super block valid. */
324 Super.s_state |= MINIX_VALID_FS;
325 Super.s_state &= ~MINIX_ERROR_FS;
326
327 if (lseek(DEV, 0, SEEK_SET))
328 error_msg_and_die("seek to boot block failed in write_tables");
329 if (512 != write(DEV, boot_block_buffer, 512))
330 error_msg_and_die("unable to clear boot sector");
331 if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET))
332 error_msg_and_die("seek failed in write_tables");
333 if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE))
334 error_msg_and_die("unable to write super-block");
335 if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE))
336 error_msg_and_die("unable to write inode map");
337 if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE))
338 error_msg_and_die("unable to write zone map");
339 if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE))
340 error_msg_and_die("unable to write inodes");
341
342}
343
344static void write_block(int blk, char *buffer)
345{
346 if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET))
347 error_msg_and_die("seek failed in write_block");
348 if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE))
349 error_msg_and_die("write failed in write_block");
350}
351
352static int get_free_block(void)
353{
354 int blk;
355
356 if (used_good_blocks + 1 >= MAX_GOOD_BLOCKS)
357 error_msg_and_die("too many bad blocks");
358 if (used_good_blocks)
359 blk = good_blocks_table[used_good_blocks - 1] + 1;
360 else
361 blk = FIRSTZONE;
362 while (blk < ZONES && zone_in_use(blk))
363 blk++;
364 if (blk >= ZONES)
365 error_msg_and_die("not enough good blocks");
366 good_blocks_table[used_good_blocks] = blk;
367 used_good_blocks++;
368 return blk;
369}
370
371static void mark_good_blocks(void)
372{
373 int blk;
374
375 for (blk = 0; blk < used_good_blocks; blk++)
376 mark_zone(good_blocks_table[blk]);
377}
378
379static int next(int zone)
380{
381 if (!zone)
382 zone = FIRSTZONE - 1;
383 while (++zone < ZONES)
384 if (zone_in_use(zone))
385 return zone;
386 return 0;
387}
388
389static void make_bad_inode(void)
390{
391 struct minix_inode *inode = &Inode[MINIX_BAD_INO];
392 int i, j, zone;
393 int ind = 0, dind = 0;
394 unsigned short ind_block[BLOCK_SIZE >> 1];
395 unsigned short dind_block[BLOCK_SIZE >> 1];
396
397#define NEXT_BAD (zone = next(zone))
398
399 if (!badblocks)
400 return;
401 mark_inode(MINIX_BAD_INO);
402 inode->i_nlinks = 1;
403 inode->i_time = time(NULL);
404 inode->i_mode = S_IFREG + 0000;
405 inode->i_size = badblocks * BLOCK_SIZE;
406 zone = next(0);
407 for (i = 0; i < 7; i++) {
408 inode->i_zone[i] = zone;
409 if (!NEXT_BAD)
410 goto end_bad;
411 }
412 inode->i_zone[7] = ind = get_free_block();
413 memset(ind_block, 0, BLOCK_SIZE);
414 for (i = 0; i < 512; i++) {
415 ind_block[i] = zone;
416 if (!NEXT_BAD)
417 goto end_bad;
418 }
419 inode->i_zone[8] = dind = get_free_block();
420 memset(dind_block, 0, BLOCK_SIZE);
421 for (i = 0; i < 512; i++) {
422 write_block(ind, (char *) ind_block);
423 dind_block[i] = ind = get_free_block();
424 memset(ind_block, 0, BLOCK_SIZE);
425 for (j = 0; j < 512; j++) {
426 ind_block[j] = zone;
427 if (!NEXT_BAD)
428 goto end_bad;
429 }
430 }
431 error_msg_and_die("too many bad blocks");
432 end_bad:
433 if (ind)
434 write_block(ind, (char *) ind_block);
435 if (dind)
436 write_block(dind, (char *) dind_block);
437}
438
439#ifdef BB_FEATURE_MINIX2
440static void make_bad_inode2(void)
441{
442 struct minix2_inode *inode = &Inode2[MINIX_BAD_INO];
443 int i, j, zone;
444 int ind = 0, dind = 0;
445 unsigned long ind_block[BLOCK_SIZE >> 2];
446 unsigned long dind_block[BLOCK_SIZE >> 2];
447
448 if (!badblocks)
449 return;
450 mark_inode(MINIX_BAD_INO);
451 inode->i_nlinks = 1;
452 inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL);
453 inode->i_mode = S_IFREG + 0000;
454 inode->i_size = badblocks * BLOCK_SIZE;
455 zone = next(0);
456 for (i = 0; i < 7; i++) {
457 inode->i_zone[i] = zone;
458 if (!NEXT_BAD)
459 goto end_bad;
460 }
461 inode->i_zone[7] = ind = get_free_block();
462 memset(ind_block, 0, BLOCK_SIZE);
463 for (i = 0; i < 256; i++) {
464 ind_block[i] = zone;
465 if (!NEXT_BAD)
466 goto end_bad;
467 }
468 inode->i_zone[8] = dind = get_free_block();
469 memset(dind_block, 0, BLOCK_SIZE);
470 for (i = 0; i < 256; i++) {
471 write_block(ind, (char *) ind_block);
472 dind_block[i] = ind = get_free_block();
473 memset(ind_block, 0, BLOCK_SIZE);
474 for (j = 0; j < 256; j++) {
475 ind_block[j] = zone;
476 if (!NEXT_BAD)
477 goto end_bad;
478 }
479 }
480 /* Could make triple indirect block here */
481 error_msg_and_die("too many bad blocks");
482 end_bad:
483 if (ind)
484 write_block(ind, (char *) ind_block);
485 if (dind)
486 write_block(dind, (char *) dind_block);
487}
488#endif
489
490static void make_root_inode(void)
491{
492 struct minix_inode *inode = &Inode[MINIX_ROOT_INO];
493
494 mark_inode(MINIX_ROOT_INO);
495 inode->i_zone[0] = get_free_block();
496 inode->i_nlinks = 2;
497 inode->i_time = time(NULL);
498 if (badblocks)
499 inode->i_size = 3 * dirsize;
500 else {
501 root_block[2 * dirsize] = '\0';
502 root_block[2 * dirsize + 1] = '\0';
503 inode->i_size = 2 * dirsize;
504 }
505 inode->i_mode = S_IFDIR + 0755;
506 inode->i_uid = getuid();
507 if (inode->i_uid)
508 inode->i_gid = getgid();
509 write_block(inode->i_zone[0], root_block);
510}
511
512#ifdef BB_FEATURE_MINIX2
513static void make_root_inode2(void)
514{
515 struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO];
516
517 mark_inode(MINIX_ROOT_INO);
518 inode->i_zone[0] = get_free_block();
519 inode->i_nlinks = 2;
520 inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL);
521 if (badblocks)
522 inode->i_size = 3 * dirsize;
523 else {
524 root_block[2 * dirsize] = '\0';
525 root_block[2 * dirsize + 1] = '\0';
526 inode->i_size = 2 * dirsize;
527 }
528 inode->i_mode = S_IFDIR + 0755;
529 inode->i_uid = getuid();
530 if (inode->i_uid)
531 inode->i_gid = getgid();
532 write_block(inode->i_zone[0], root_block);
533}
534#endif
535
536static void setup_tables(void)
537{
538 int i;
539 unsigned long inodes;
540
541 memset(super_block_buffer, 0, BLOCK_SIZE);
542 memset(boot_block_buffer, 0, 512);
543 MAGIC = magic;
544 ZONESIZE = 0;
545 MAXSIZE = version2 ? 0x7fffffff : (7 + 512 + 512 * 512) * 1024;
546 ZONES = BLOCKS;
547/* some magic nrs: 1 inode / 3 blocks */
548 if (req_nr_inodes == 0)
549 inodes = BLOCKS / 3;
550 else
551 inodes = req_nr_inodes;
552 /* Round up inode count to fill block size */
553#ifdef BB_FEATURE_MINIX2
554 if (version2)
555 inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) &
556 ~(MINIX2_INODES_PER_BLOCK - 1));
557 else
558#endif
559 inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) &
560 ~(MINIX_INODES_PER_BLOCK - 1));
561 if (inodes > 65535)
562 inodes = 65535;
563 INODES = inodes;
564 IMAPS = UPPER(INODES + 1, BITS_PER_BLOCK);
565 ZMAPS = 0;
566 i = 0;
567 while (ZMAPS !=
568 UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1,
569 BITS_PER_BLOCK) && i < 1000) {
570 ZMAPS =
571 UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1,
572 BITS_PER_BLOCK);
573 i++;
574 }
575 /* Real bad hack but overwise mkfs.minix can be thrown
576 * in infinite loop...
577 * try:
578 * dd if=/dev/zero of=test.fs count=10 bs=1024
579 * /sbin/mkfs.minix -i 200 test.fs
580 * */
581 if (i >= 999) {
582 error_msg_and_die("unable to allocate buffers for maps");
583 }
584 FIRSTZONE = NORM_FIRSTZONE;
585 inode_map = xmalloc(IMAPS * BLOCK_SIZE);
586 zone_map = xmalloc(ZMAPS * BLOCK_SIZE);
587 memset(inode_map, 0xff, IMAPS * BLOCK_SIZE);
588 memset(zone_map, 0xff, ZMAPS * BLOCK_SIZE);
589 for (i = FIRSTZONE; i < ZONES; i++)
590 unmark_zone(i);
591 for (i = MINIX_ROOT_INO; i <= INODES; i++)
592 unmark_inode(i);
593 inode_buffer = xmalloc(INODE_BUFFER_SIZE);
594 memset(inode_buffer, 0, INODE_BUFFER_SIZE);
595 printf("%ld inodes\n", INODES);
596 printf("%ld blocks\n", ZONES);
597 printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE);
598 printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE);
599 printf("Maxsize=%ld\n\n", MAXSIZE);
600}
601
602/*
603 * Perform a test of a block; return the number of
604 * blocks readable/writeable.
605 */
606static long do_check(char *buffer, int try, unsigned int current_block)
607{
608 long got;
609
610 /* Seek to the correct loc. */
611 if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) !=
612 current_block * BLOCK_SIZE) {
613 error_msg_and_die("seek failed during testing of blocks");
614 }
615
616
617 /* Try the read */
618 got = read(DEV, buffer, try * BLOCK_SIZE);
619 if (got < 0)
620 got = 0;
621 if (got & (BLOCK_SIZE - 1)) {
622 printf("Weird values in do_check: probably bugs\n");
623 }
624 got /= BLOCK_SIZE;
625 return got;
626}
627
628static unsigned int currently_testing = 0;
629
630static void alarm_intr(int alnum)
631{
632 if (currently_testing >= ZONES)
633 return;
634 signal(SIGALRM, alarm_intr);
635 alarm(5);
636 if (!currently_testing)
637 return;
638 printf("%d ...", currently_testing);
639 fflush(stdout);
640}
641
642static void check_blocks(void)
643{
644 int try, got;
645 static char buffer[BLOCK_SIZE * TEST_BUFFER_BLOCKS];
646
647 currently_testing = 0;
648 signal(SIGALRM, alarm_intr);
649 alarm(5);
650 while (currently_testing < ZONES) {
651 if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) !=
652 currently_testing * BLOCK_SIZE)
653 error_msg_and_die("seek failed in check_blocks");
654 try = TEST_BUFFER_BLOCKS;
655 if (currently_testing + try > ZONES)
656 try = ZONES - currently_testing;
657 got = do_check(buffer, try, currently_testing);
658 currently_testing += got;
659 if (got == try)
660 continue;
661 if (currently_testing < FIRSTZONE)
662 error_msg_and_die("bad blocks before data-area: cannot make fs");
663 mark_zone(currently_testing);
664 badblocks++;
665 currently_testing++;
666 }
667 if (badblocks > 1)
668 printf("%d bad blocks\n", badblocks);
669 else if (badblocks == 1)
670 printf("one bad block\n");
671}
672
673static void get_list_blocks(filename)
674char *filename;
675
676{
677 FILE *listfile;
678 unsigned long blockno;
679
680 listfile = xfopen(filename, "r");
681 while (!feof(listfile)) {
682 fscanf(listfile, "%ld\n", &blockno);
683 mark_zone(blockno);
684 badblocks++;
685 }
686 if (badblocks > 1)
687 printf("%d bad blocks\n", badblocks);
688 else if (badblocks == 1)
689 printf("one bad block\n");
690}
691
692extern int mkfs_minix_main(int argc, char **argv)
693{
694 int i=1;
695 char *tmp;
696 struct stat statbuf;
697 char *listfile = NULL;
698 int stopIt=FALSE;
699
700 if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
701 error_msg_and_die("bad inode size");
702#ifdef BB_FEATURE_MINIX2
703 if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
704 error_msg_and_die("bad inode size");
705#endif
706
707 /* Parse options */
708 argv++;
709 while (--argc >= 0 && *argv && **argv) {
710 if (**argv == '-') {
711 stopIt=FALSE;
712 while (i > 0 && *++(*argv) && stopIt==FALSE) {
713 switch (**argv) {
714 case 'c':
715 check = 1;
716 break;
717 case 'i':
718 {
719 char *cp=NULL;
720 if (*(*argv+1) != 0) {
721 cp = ++(*argv);
722 } else {
723 if (--argc == 0) {
724 goto goodbye;
725 }
726 cp = *(++argv);
727 }
728 req_nr_inodes = strtoul(cp, &tmp, 0);
729 if (*tmp)
730 show_usage();
731 stopIt=TRUE;
732 break;
733 }
734 case 'l':
735 if (--argc == 0) {
736 goto goodbye;
737 }
738 listfile = *(++argv);
739 break;
740 case 'n':
741 {
742 char *cp=NULL;
743
744 if (*(*argv+1) != 0) {
745 cp = ++(*argv);
746 } else {
747 if (--argc == 0) {
748 goto goodbye;
749 }
750 cp = *(++argv);
751 }
752 i = strtoul(cp, &tmp, 0);
753 if (*tmp)
754 show_usage();
755 if (i == 14)
756 magic = MINIX_SUPER_MAGIC;
757 else if (i == 30)
758 magic = MINIX_SUPER_MAGIC2;
759 else
760 show_usage();
761 namelen = i;
762 dirsize = i + 2;
763 stopIt=TRUE;
764 break;
765 }
766 case 'v':
767#ifdef BB_FEATURE_MINIX2
768 version2 = 1;
769#else
770 error_msg("%s: not compiled with minix v2 support",
771 device_name);
772 exit(-1);
773#endif
774 break;
775 case '-':
776 case 'h':
777 default:
778goodbye:
779 show_usage();
780 }
781 }
782 } else {
783 if (device_name == NULL)
784 device_name = *argv;
785 else if (BLOCKS == 0)
786 BLOCKS = strtol(*argv, &tmp, 0);
787 else {
788 goto goodbye;
789 }
790 }
791 argv++;
792 }
793
794 if (device_name && !BLOCKS)
795 BLOCKS = get_size(device_name) / 1024;
796 if (!device_name || BLOCKS < 10) {
797 show_usage();
798 }
799#ifdef BB_FEATURE_MINIX2
800 if (version2) {
801 if (namelen == 14)
802 magic = MINIX2_SUPER_MAGIC;
803 else
804 magic = MINIX2_SUPER_MAGIC2;
805 } else
806#endif
807 if (BLOCKS > 65535)
808 BLOCKS = 65535;
809 check_mount(); /* is it already mounted? */
810 tmp = root_block;
811 *(short *) tmp = 1;
812 strcpy(tmp + 2, ".");
813 tmp += dirsize;
814 *(short *) tmp = 1;
815 strcpy(tmp + 2, "..");
816 tmp += dirsize;
817 *(short *) tmp = 2;
818 strcpy(tmp + 2, ".badblocks");
819 DEV = open(device_name, O_RDWR);
820 if (DEV < 0)
821 error_msg_and_die("unable to open %s", device_name);
822 if (fstat(DEV, &statbuf) < 0)
823 error_msg_and_die("unable to stat %s", device_name);
824 if (!S_ISBLK(statbuf.st_mode))
825 check = 0;
826 else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
827 error_msg_and_die("will not try to make filesystem on '%s'", device_name);
828 setup_tables();
829 if (check)
830 check_blocks();
831 else if (listfile)
832 get_list_blocks(listfile);
833#ifdef BB_FEATURE_MINIX2
834 if (version2) {
835 make_root_inode2();
836 make_bad_inode2();
837 } else
838#endif
839 {
840 make_root_inode();
841 make_bad_inode();
842 }
843 mark_good_blocks();
844 write_tables();
845 return( 0);
846
847}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-13 12:50:13 +0000