1 /* vi: set sw=4 ts=4: */
3 * fsck.c - a file system consistency checker for Linux.
5 * (C) 1991, 1992 Linus Torvalds. This file may be redistributed
6 * as per the GNU copyleft.
10 * 09.11.91 - made the first rudimetary functions
12 * 10.11.91 - updated, does checking, no repairs yet.
13 * Sent out to the mailing-list for testing.
15 * 14.11.91 - Testing seems to have gone well. Added some
16 * correction-code, and changed some functions.
18 * 15.11.91 - More correction code. Hopefully it notices most
19 * cases now, and tries to do something about them.
21 * 16.11.91 - More corrections (thanks to Mika Jalava). Most
22 * things seem to work now. Yeah, sure.
25 * 19.04.92 - Had to start over again from this old version, as a
26 * kernel bug ate my enhanced fsck in february.
28 * 28.02.93 - added support for different directory entry sizes..
30 * Sat Mar 6 18:59:42 1993, faith@cs.unc.edu: Output namelen with
31 * super-block information
33 * Sat Oct 9 11:17:11 1993, faith@cs.unc.edu: make exit status conform
34 * to that required by fsutil
36 * Mon Jan 3 11:06:52 1994 - Dr. Wettstein (greg%wind.uucp@plains.nodak.edu)
37 * Added support for file system valid flag. Also
38 * added program_version variable and output of
39 * program name and version number when program
42 * 30.10.94 - added support for v2 filesystem
43 * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
45 * 10.12.94 - added test to prevent checking of mounted fs adapted
46 * from Theodore Ts'o's (tytso@athena.mit.edu) e2fsck
47 * program. (Daniel Quinlan, quinlan@yggdrasil.com)
49 * 01.07.96 - Fixed the v2 fs stuff to use the right #defines and such
50 * for modern libcs (janl@math.uio.no, Nicolai Langfeldt)
52 * 02.07.96 - Added C bit fiddling routines from rmk@ecs.soton.ac.uk
53 * (Russell King). He made them for ARM. It would seem
54 * that the ARM is powerful enough to do this in C whereas
55 * i386 and m64k must use assembly to get it fast >:-)
56 * This should make minix fsck systemindependent.
57 * (janl@math.uio.no, Nicolai Langfeldt)
59 * 04.11.96 - Added minor fixes from Andreas Schwab to avoid compiler
60 * warnings. Added mc68k bitops from
61 * Joerg Dorchain <dorchain@mpi-sb.mpg.de>.
63 * 06.11.96 - Added v2 code submitted by Joerg Dorchain, but written by
66 * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
67 * - added Native Language Support
70 * I've had no time to add comments - hopefully the function names
71 * are comments enough. As with all file system checkers, this assumes
72 * the file system is quiescent - don't use it on a mounted device
73 * unless you can be sure nobody is writing to it (and remember that the
74 * kernel can write to it when it searches for files).
76 * Usuage: fsck [-larvsm] device
77 * -l for a listing of all the filenames
78 * -a for automatic repairs (not implemented)
79 * -r for repairs (interactive) (not implemented)
80 * -v for verbose (tells how many files)
81 * -s for super-block info
82 * -m for minix-like "mode not cleared" warnings
83 * -f force filesystem check even if filesystem marked as valid
85 * The device may be a block device or a image of one, but this isn't
86 * enforced (but it's not much fun on a character device :-).
100 #include <sys/stat.h>
101 #include <sys/param.h>
102 #include <linux/minix_fs.h>
104 #ifdef MINIX2_SUPER_MAGIC2
105 #define HAVE_MINIX2 1
114 #define UPPER(size,n) ((size+((n)-1))/(n))
115 #define INODE_SIZE (sizeof(struct minix_inode))
117 #define INODE_SIZE2 (sizeof(struct minix2_inode))
118 #define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
119 : MINIX_INODES_PER_BLOCK))
121 #define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
123 #define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
125 #define BITS_PER_BLOCK (BLOCK_SIZE<<3)
127 static char *program_name = "fsck.minix";
128 static char *program_version = "1.2 - 11/11/96";
129 static char *device_name = NULL;
131 static int repair = 0, automatic = 0, verbose = 0, list = 0, show =
132 0, warn_mode = 0, force = 0;
133 static int directory = 0, regular = 0, blockdev = 0, chardev = 0, links =
134 0, symlinks = 0, total = 0;
136 static int changed = 0; /* flags if the filesystem has been changed */
137 static int errors_uncorrected = 0; /* flag if some error was not corrected */
138 static int dirsize = 16;
139 static int namelen = 14;
140 static int version2 = 0;
141 static struct termios termios;
142 static int termios_set = 0;
146 static int name_depth = 0;
147 // static char name_list[MAX_DEPTH][BUFSIZ + 1];
148 static char **name_list = NULL;
150 static char *inode_buffer = NULL;
152 #define Inode (((struct minix_inode *) inode_buffer)-1)
153 #define Inode2 (((struct minix2_inode *) inode_buffer)-1)
154 static char super_block_buffer[BLOCK_SIZE];
156 #define Super (*(struct minix_super_block *)super_block_buffer)
157 #define INODES ((unsigned long)Super.s_ninodes)
159 #define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
161 #define ZONES ((unsigned long)(Super.s_nzones))
163 #define IMAPS ((unsigned long)Super.s_imap_blocks)
164 #define ZMAPS ((unsigned long)Super.s_zmap_blocks)
165 #define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
166 #define ZONESIZE ((unsigned long)Super.s_log_zone_size)
167 #define MAXSIZE ((unsigned long)Super.s_max_size)
168 #define MAGIC (Super.s_magic)
169 #define NORM_FIRSTZONE (2+IMAPS+ZMAPS+INODE_BLOCKS)
171 static char *inode_map;
172 static char *zone_map;
174 static unsigned char *inode_count = NULL;
175 static unsigned char *zone_count = NULL;
177 static void recursive_check(unsigned int ino);
178 static void recursive_check2(unsigned int ino);
180 #define inode_in_use(x) (isset(inode_map,(x)))
181 #define zone_in_use(x) (isset(zone_map,(x)-FIRSTZONE+1))
183 #define mark_inode(x) (setbit(inode_map,(x)),changed=1)
184 #define unmark_inode(x) (clrbit(inode_map,(x)),changed=1)
186 #define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1),changed=1)
187 #define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1),changed=1)
189 static void leave(int) __attribute__ ((noreturn));
190 static void leave(int status)
193 tcsetattr(0, TCSANOW, &termios);
197 static void show_usage(void)
199 fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
201 fprintf(stderr, "Usage: %s [-larvsmf] /dev/name\n", program_name);
202 #ifndef BB_FEATURE_TRIVIAL_HELP
204 "\nPerforms a consistency check for MINIX filesystems.\n\n");
205 fprintf(stderr, "Options:\n");
206 fprintf(stderr, "\t-l\tLists all filenames\n");
207 fprintf(stderr, "\t-r\tPerform interactive repairs\n");
208 fprintf(stderr, "\t-a\tPerform automatic repairs\n");
209 fprintf(stderr, "\t-v\tverbose\n");
210 fprintf(stderr, "\t-s\tOutputs super-block information\n");
212 "\t-m\tActivates MINIX-like \"mode not cleared\" warnings\n");
213 fprintf(stderr, "\t-f\tForce file system check.\n\n");
218 static void die(const char *str)
220 fprintf(stderr, "%s: %s\n", program_name, str);
225 * This simply goes through the file-name data and prints out the
228 static void print_current_name(void)
232 while (i < name_depth)
233 printf("/%.*s", namelen, name_list[i++]);
238 static int ask(const char *string, int def)
244 errors_uncorrected = 1;
250 errors_uncorrected = 1;
253 printf(def ? "%s (y/n)? " : "%s (n/y)? ", string);
256 if ((c = getchar()) == EOF) {
258 errors_uncorrected = 1;
265 } else if (c == 'N') {
268 } else if (c == ' ' || c == '\n')
275 errors_uncorrected = 1;
281 * Make certain that we aren't checking a filesystem that is on a
282 * mounted partition. Code adapted from e2fsck, Copyright (C) 1993,
283 * 1994 Theodore Ts'o. Also licensed under GPL.
285 static void check_mount(void)
292 if ((f = setmntent(MOUNTED, "r")) == NULL)
294 while ((mnt = getmntent(f)) != NULL)
295 if (strcmp(device_name, mnt->mnt_fsname) == 0)
302 * If the root is mounted read-only, then /etc/mtab is
303 * probably not correct; so we won't issue a warning based on
306 fd = open(MOUNTED, O_RDWR);
307 if (fd < 0 && errno == EROFS)
312 printf("%s is mounted. ", device_name);
313 if (isatty(0) && isatty(1))
314 cont = ask("Do you really want to continue", 0);
318 printf("check aborted.\n");
325 * check_zone_nr checks to see that *nr is a valid zone nr. If it
326 * isn't, it will possibly be repaired. Check_zone_nr sets *corrected
327 * if an error was corrected, and returns the zone (0 for no zone
328 * or a bad zone-number).
330 static int check_zone_nr(unsigned short *nr, int *corrected)
335 printf("Zone nr < FIRSTZONE in file `");
336 else if (*nr >= ZONES)
337 printf("Zone nr >= ZONES in file `");
340 print_current_name();
342 if (ask("Remove block", 1)) {
350 static int check_zone_nr2(unsigned int *nr, int *corrected)
355 printf("Zone nr < FIRSTZONE in file `");
356 else if (*nr >= ZONES)
357 printf("Zone nr >= ZONES in file `");
360 print_current_name();
362 if (ask("Remove block", 1)) {
371 * read-block reads block nr into the buffer at addr.
373 static void read_block(unsigned int nr, char *addr)
376 memset(addr, 0, BLOCK_SIZE);
379 if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) {
380 printf("Read error: unable to seek to block in file '");
381 print_current_name();
383 memset(addr, 0, BLOCK_SIZE);
384 errors_uncorrected = 1;
385 } else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) {
386 printf("Read error: bad block in file '");
387 print_current_name();
389 memset(addr, 0, BLOCK_SIZE);
390 errors_uncorrected = 1;
395 * write_block writes block nr to disk.
397 static void write_block(unsigned int nr, char *addr)
401 if (nr < FIRSTZONE || nr >= ZONES) {
402 printf("Internal error: trying to write bad block\n"
403 "Write request ignored\n");
404 errors_uncorrected = 1;
407 if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET))
408 die("seek failed in write_block");
409 if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) {
410 printf("Write error: bad block in file '");
411 print_current_name();
413 errors_uncorrected = 1;
418 * map-block calculates the absolute block nr of a block in a file.
419 * It sets 'changed' if the inode has needed changing, and re-writes
420 * any indirect blocks with errors.
422 static int map_block(struct minix_inode *inode, unsigned int blknr)
424 unsigned short ind[BLOCK_SIZE >> 1];
425 unsigned short dind[BLOCK_SIZE >> 1];
426 int blk_chg, block, result;
429 return check_zone_nr(inode->i_zone + blknr, &changed);
432 block = check_zone_nr(inode->i_zone + 7, &changed);
433 read_block(block, (char *) ind);
435 result = check_zone_nr(blknr + ind, &blk_chg);
437 write_block(block, (char *) ind);
441 block = check_zone_nr(inode->i_zone + 8, &changed);
442 read_block(block, (char *) dind);
444 result = check_zone_nr(dind + (blknr / 512), &blk_chg);
446 write_block(block, (char *) dind);
448 read_block(block, (char *) ind);
450 result = check_zone_nr(ind + (blknr % 512), &blk_chg);
452 write_block(block, (char *) ind);
457 static int map_block2(struct minix2_inode *inode, unsigned int blknr)
459 unsigned int ind[BLOCK_SIZE >> 2];
460 unsigned int dind[BLOCK_SIZE >> 2];
461 unsigned int tind[BLOCK_SIZE >> 2];
462 int blk_chg, block, result;
465 return check_zone_nr2(inode->i_zone + blknr, &changed);
468 block = check_zone_nr2(inode->i_zone + 7, &changed);
469 read_block(block, (char *) ind);
471 result = check_zone_nr2(blknr + ind, &blk_chg);
473 write_block(block, (char *) ind);
477 if (blknr >= 256 * 256) {
478 block = check_zone_nr2(inode->i_zone + 8, &changed);
479 read_block(block, (char *) dind);
481 result = check_zone_nr2(dind + blknr / 256, &blk_chg);
483 write_block(block, (char *) dind);
485 read_block(block, (char *) ind);
487 result = check_zone_nr2(ind + blknr % 256, &blk_chg);
489 write_block(block, (char *) ind);
493 block = check_zone_nr2(inode->i_zone + 9, &changed);
494 read_block(block, (char *) tind);
496 result = check_zone_nr2(tind + blknr / (256 * 256), &blk_chg);
498 write_block(block, (char *) tind);
500 read_block(block, (char *) dind);
502 result = check_zone_nr2(dind + (blknr / 256) % 256, &blk_chg);
504 write_block(block, (char *) dind);
506 read_block(block, (char *) ind);
508 result = check_zone_nr2(ind + blknr % 256, &blk_chg);
510 write_block(block, (char *) ind);
515 static void write_super_block(void)
518 * Set the state of the filesystem based on whether or not there
519 * are uncorrected errors. The filesystem valid flag is
520 * unconditionally set if we get this far.
522 Super.s_state |= MINIX_VALID_FS;
523 if (errors_uncorrected)
524 Super.s_state |= MINIX_ERROR_FS;
526 Super.s_state &= ~MINIX_ERROR_FS;
528 if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
529 die("seek failed in write_super_block");
530 if (BLOCK_SIZE != write(IN, super_block_buffer, BLOCK_SIZE))
531 die("unable to write super-block");
536 static void write_tables(void)
540 if (IMAPS * BLOCK_SIZE != write(IN, inode_map, IMAPS * BLOCK_SIZE))
541 die("Unable to write inode map");
542 if (ZMAPS * BLOCK_SIZE != write(IN, zone_map, ZMAPS * BLOCK_SIZE))
543 die("Unable to write zone map");
544 if (INODE_BUFFER_SIZE != write(IN, inode_buffer, INODE_BUFFER_SIZE))
545 die("Unable to write inodes");
548 static void get_dirsize(void)
551 char blk[BLOCK_SIZE];
556 block = Inode2[ROOT_INO].i_zone[0];
559 block = Inode[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) {
571 static void read_superblock(void)
573 if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
575 if (BLOCK_SIZE != read(IN, super_block_buffer, BLOCK_SIZE))
576 die("unable to read super block");
577 if (MAGIC == MINIX_SUPER_MAGIC) {
581 } else if (MAGIC == MINIX_SUPER_MAGIC2) {
586 } else if (MAGIC == MINIX2_SUPER_MAGIC) {
590 } else if (MAGIC == MINIX2_SUPER_MAGIC2) {
596 die("bad magic number in super-block");
597 if (ZONESIZE != 0 || BLOCK_SIZE != 1024)
598 die("Only 1k blocks/zones supported");
599 if (IMAPS * BLOCK_SIZE * 8 < INODES + 1)
600 die("bad s_imap_blocks field in super-block");
601 if (ZMAPS * BLOCK_SIZE * 8 < ZONES - FIRSTZONE + 1)
602 die("bad s_zmap_blocks field in super-block");
605 static void read_tables(void)
607 inode_map = xmalloc(IMAPS * BLOCK_SIZE);
608 zone_map = xmalloc(ZMAPS * BLOCK_SIZE);
609 memset(inode_map, 0, sizeof(inode_map));
610 memset(zone_map, 0, sizeof(zone_map));
611 inode_buffer = xmalloc(INODE_BUFFER_SIZE);
612 inode_count = xmalloc(INODES + 1);
613 zone_count = xmalloc(ZONES);
614 if (IMAPS * BLOCK_SIZE != read(IN, inode_map, IMAPS * BLOCK_SIZE))
615 die("Unable to read inode map");
616 if (ZMAPS * BLOCK_SIZE != read(IN, zone_map, ZMAPS * BLOCK_SIZE))
617 die("Unable to read zone map");
618 if (INODE_BUFFER_SIZE != read(IN, inode_buffer, INODE_BUFFER_SIZE))
619 die("Unable to read inodes");
620 if (NORM_FIRSTZONE != FIRSTZONE) {
621 printf("Warning: Firstzone != Norm_firstzone\n");
622 errors_uncorrected = 1;
626 printf("%ld inodes\n", INODES);
627 printf("%ld blocks\n", ZONES);
628 printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE);
629 printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE);
630 printf("Maxsize=%ld\n", MAXSIZE);
631 printf("Filesystem state=%d\n", Super.s_state);
632 printf("namelen=%d\n\n", namelen);
636 struct minix_inode *get_inode(unsigned int nr)
638 struct minix_inode *inode;
640 if (!nr || nr > INODES)
644 if (!inode_count[nr]) {
645 if (!inode_in_use(nr)) {
646 printf("Inode %d marked not used, but used for file '", nr);
647 print_current_name();
650 if (ask("Mark in use", 1))
653 errors_uncorrected = 1;
656 if (S_ISDIR(inode->i_mode))
658 else if (S_ISREG(inode->i_mode))
660 else if (S_ISCHR(inode->i_mode))
662 else if (S_ISBLK(inode->i_mode))
664 else if (S_ISLNK(inode->i_mode))
666 else if (S_ISSOCK(inode->i_mode));
667 else if (S_ISFIFO(inode->i_mode));
669 print_current_name();
670 printf(" has mode %05o\n", inode->i_mode);
675 if (!++inode_count[nr]) {
676 printf("Warning: inode count too big.\n");
678 errors_uncorrected = 1;
684 struct minix2_inode *get_inode2(unsigned int nr)
686 struct minix2_inode *inode;
688 if (!nr || nr > INODES)
692 if (!inode_count[nr]) {
693 if (!inode_in_use(nr)) {
694 printf("Inode %d marked not used, but used for file '", nr);
695 print_current_name();
698 if (ask("Mark in use", 1))
701 errors_uncorrected = 1;
704 if (S_ISDIR(inode->i_mode))
706 else if (S_ISREG(inode->i_mode))
708 else if (S_ISCHR(inode->i_mode))
710 else if (S_ISBLK(inode->i_mode))
712 else if (S_ISLNK(inode->i_mode))
714 else if (S_ISSOCK(inode->i_mode));
715 else if (S_ISFIFO(inode->i_mode));
717 print_current_name();
718 printf(" has mode %05o\n", inode->i_mode);
722 if (!++inode_count[nr]) {
723 printf("Warning: inode count too big.\n");
725 errors_uncorrected = 1;
731 static void check_root(void)
733 struct minix_inode *inode = Inode + ROOT_INO;
735 if (!inode || !S_ISDIR(inode->i_mode))
736 die("root inode isn't a directory");
740 static void check_root2(void)
742 struct minix2_inode *inode = Inode2 + ROOT_INO;
744 if (!inode || !S_ISDIR(inode->i_mode))
745 die("root inode isn't a directory");
749 static int add_zone(unsigned short *znr, int *corrected)
755 block = check_zone_nr(znr, corrected);
758 if (zone_count[block]) {
759 printf("Block has been used before. Now in file `");
760 print_current_name();
762 if (ask("Clear", 1)) {
770 if (!zone_in_use(block)) {
771 printf("Block %d in file `", block);
772 print_current_name();
773 printf("' is marked not in use.");
774 if (ask("Correct", 1))
777 if (!++zone_count[block])
783 static int add_zone2(unsigned int *znr, int *corrected)
789 block = check_zone_nr2(znr, corrected);
792 if (zone_count[block]) {
793 printf("Block has been used before. Now in file `");
794 print_current_name();
796 if (ask("Clear", 1)) {
804 if (!zone_in_use(block)) {
805 printf("Block %d in file `", block);
806 print_current_name();
807 printf("' is marked not in use.");
808 if (ask("Correct", 1))
811 if (!++zone_count[block])
817 static void add_zone_ind(unsigned short *znr, int *corrected)
819 static char blk[BLOCK_SIZE];
823 block = add_zone(znr, corrected);
826 read_block(block, blk);
827 for (i = 0; i < (BLOCK_SIZE >> 1); i++)
828 add_zone(i + (unsigned short *) blk, &chg_blk);
830 write_block(block, blk);
834 static void add_zone_ind2(unsigned int *znr, int *corrected)
836 static char blk[BLOCK_SIZE];
840 block = add_zone2(znr, corrected);
843 read_block(block, blk);
844 for (i = 0; i < BLOCK_SIZE >> 2; i++)
845 add_zone2(i + (unsigned int *) blk, &chg_blk);
847 write_block(block, blk);
851 static void add_zone_dind(unsigned short *znr, int *corrected)
853 static char blk[BLOCK_SIZE];
857 block = add_zone(znr, corrected);
860 read_block(block, blk);
861 for (i = 0; i < (BLOCK_SIZE >> 1); i++)
862 add_zone_ind(i + (unsigned short *) blk, &blk_chg);
864 write_block(block, blk);
868 static void add_zone_dind2(unsigned int *znr, int *corrected)
870 static char blk[BLOCK_SIZE];
874 block = add_zone2(znr, corrected);
877 read_block(block, blk);
878 for (i = 0; i < BLOCK_SIZE >> 2; i++)
879 add_zone_ind2(i + (unsigned int *) blk, &blk_chg);
881 write_block(block, blk);
884 static void add_zone_tind2(unsigned int *znr, int *corrected)
886 static char blk[BLOCK_SIZE];
890 block = add_zone2(znr, corrected);
893 read_block(block, blk);
894 for (i = 0; i < BLOCK_SIZE >> 2; i++)
895 add_zone_dind2(i + (unsigned int *) blk, &blk_chg);
897 write_block(block, blk);
901 static void check_zones(unsigned int i)
903 struct minix_inode *inode;
905 if (!i || i > INODES)
907 if (inode_count[i] > 1) /* have we counted this file already? */
910 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
911 !S_ISLNK(inode->i_mode)) return;
912 for (i = 0; i < 7; i++)
913 add_zone(i + inode->i_zone, &changed);
914 add_zone_ind(7 + inode->i_zone, &changed);
915 add_zone_dind(8 + inode->i_zone, &changed);
919 static void check_zones2(unsigned int i)
921 struct minix2_inode *inode;
923 if (!i || i > INODES)
925 if (inode_count[i] > 1) /* have we counted this file already? */
928 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)
929 && !S_ISLNK(inode->i_mode))
931 for (i = 0; i < 7; i++)
932 add_zone2(i + inode->i_zone, &changed);
933 add_zone_ind2(7 + inode->i_zone, &changed);
934 add_zone_dind2(8 + inode->i_zone, &changed);
935 add_zone_tind2(9 + inode->i_zone, &changed);
939 static void check_file(struct minix_inode *dir, unsigned int offset)
941 static char blk[BLOCK_SIZE];
942 struct minix_inode *inode;
947 block = map_block(dir, offset / BLOCK_SIZE);
948 read_block(block, blk);
949 name = blk + (offset % BLOCK_SIZE) + 2;
950 ino = *(unsigned short *) (name - 2);
952 print_current_name();
953 printf(" contains a bad inode number for file '");
954 printf("%.*s'.", namelen, name);
955 if (ask(" Remove", 1)) {
956 *(unsigned short *) (name - 2) = 0;
957 write_block(block, blk);
961 if (name_depth < MAX_DEPTH)
962 strncpy(name_list[name_depth], name, namelen);
964 inode = get_inode(ino);
967 if (!inode || strcmp(".", name)) {
968 print_current_name();
969 printf(": bad directory: '.' isn't first\n");
970 errors_uncorrected = 1;
974 if (offset == dirsize) {
975 if (!inode || strcmp("..", name)) {
976 print_current_name();
977 printf(": bad directory: '..' isn't second\n");
978 errors_uncorrected = 1;
984 if (name_depth < MAX_DEPTH)
985 strncpy(name_list[name_depth], name, namelen);
989 printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
990 print_current_name();
991 if (S_ISDIR(inode->i_mode))
997 if (inode && S_ISDIR(inode->i_mode))
998 recursive_check(ino);
1004 static void check_file2(struct minix2_inode *dir, unsigned int offset)
1006 static char blk[BLOCK_SIZE];
1007 struct minix2_inode *inode;
1012 block = map_block2(dir, offset / BLOCK_SIZE);
1013 read_block(block, blk);
1014 name = blk + (offset % BLOCK_SIZE) + 2;
1015 ino = *(unsigned short *) (name - 2);
1017 print_current_name();
1018 printf(" contains a bad inode number for file '");
1019 printf("%.*s'.", namelen, name);
1020 if (ask(" Remove", 1)) {
1021 *(unsigned short *) (name - 2) = 0;
1022 write_block(block, blk);
1026 if (name_depth < MAX_DEPTH)
1027 strncpy(name_list[name_depth], name, namelen);
1029 inode = get_inode2(ino);
1032 if (!inode || strcmp(".", name)) {
1033 print_current_name();
1034 printf(": bad directory: '.' isn't first\n");
1035 errors_uncorrected = 1;
1039 if (offset == dirsize) {
1040 if (!inode || strcmp("..", name)) {
1041 print_current_name();
1042 printf(": bad directory: '..' isn't second\n");
1043 errors_uncorrected = 1;
1052 printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
1053 print_current_name();
1054 if (S_ISDIR(inode->i_mode))
1060 if (inode && S_ISDIR(inode->i_mode))
1061 recursive_check2(ino);
1067 static void recursive_check(unsigned int ino)
1069 struct minix_inode *dir;
1070 unsigned int offset;
1073 if (!S_ISDIR(dir->i_mode))
1074 die("internal error");
1075 if (dir->i_size < 2 * dirsize) {
1076 print_current_name();
1077 printf(": bad directory: size<32");
1078 errors_uncorrected = 1;
1080 for (offset = 0; offset < dir->i_size; offset += dirsize)
1081 check_file(dir, offset);
1085 static void recursive_check2(unsigned int ino)
1087 struct minix2_inode *dir;
1088 unsigned int offset;
1091 if (!S_ISDIR(dir->i_mode))
1092 die("internal error");
1093 if (dir->i_size < 2 * dirsize) {
1094 print_current_name();
1095 printf(": bad directory: size < 32");
1096 errors_uncorrected = 1;
1098 for (offset = 0; offset < dir->i_size; offset += dirsize)
1099 check_file2(dir, offset);
1103 static int bad_zone(int i)
1107 if (BLOCK_SIZE * i != lseek(IN, BLOCK_SIZE * i, SEEK_SET))
1108 die("seek failed in bad_zone");
1109 return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE));
1112 static void check_counts(void)
1116 for (i = 1; i <= INODES; i++) {
1117 if (!inode_in_use(i) && Inode[i].i_mode && warn_mode) {
1118 printf("Inode %d mode not cleared.", i);
1119 if (ask("Clear", 1)) {
1120 Inode[i].i_mode = 0;
1124 if (!inode_count[i]) {
1125 if (!inode_in_use(i))
1127 printf("Inode %d not used, marked used in the bitmap.", i);
1128 if (ask("Clear", 1))
1132 if (!inode_in_use(i)) {
1133 printf("Inode %d used, marked unused in the bitmap.", i);
1137 if (Inode[i].i_nlinks != inode_count[i]) {
1138 printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
1139 i, Inode[i].i_mode, Inode[i].i_nlinks, inode_count[i]);
1140 if (ask("Set i_nlinks to count", 1)) {
1141 Inode[i].i_nlinks = inode_count[i];
1146 for (i = FIRSTZONE; i < ZONES; i++) {
1147 if (zone_in_use(i) == zone_count[i])
1149 if (!zone_count[i]) {
1152 printf("Zone %d: marked in use, no file uses it.", i);
1153 if (ask("Unmark", 1))
1157 printf("Zone %d: %sin use, counted=%d\n",
1158 i, zone_in_use(i) ? "" : "not ", zone_count[i]);
1163 static void check_counts2(void)
1167 for (i = 1; i <= INODES; i++) {
1168 if (!inode_in_use(i) && Inode2[i].i_mode && warn_mode) {
1169 printf("Inode %d mode not cleared.", i);
1170 if (ask("Clear", 1)) {
1171 Inode2[i].i_mode = 0;
1175 if (!inode_count[i]) {
1176 if (!inode_in_use(i))
1178 printf("Inode %d not used, marked used in the bitmap.", i);
1179 if (ask("Clear", 1))
1183 if (!inode_in_use(i)) {
1184 printf("Inode %d used, marked unused in the bitmap.", i);
1188 if (Inode2[i].i_nlinks != inode_count[i]) {
1189 printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
1190 i, Inode2[i].i_mode, Inode2[i].i_nlinks,
1192 if (ask("Set i_nlinks to count", 1)) {
1193 Inode2[i].i_nlinks = inode_count[i];
1198 for (i = FIRSTZONE; i < ZONES; i++) {
1199 if (zone_in_use(i) == zone_count[i])
1201 if (!zone_count[i]) {
1204 printf("Zone %d: marked in use, no file uses it.", i);
1205 if (ask("Unmark", 1))
1209 printf("Zone %d: %sin use, counted=%d\n",
1210 i, zone_in_use(i) ? "" : "not ", zone_count[i]);
1215 static void check(void)
1217 memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
1218 memset(zone_count, 0, ZONES * sizeof(*zone_count));
1219 check_zones(ROOT_INO);
1220 recursive_check(ROOT_INO);
1225 static void check2(void)
1227 memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
1228 memset(zone_count, 0, ZONES * sizeof(*zone_count));
1229 check_zones2(ROOT_INO);
1230 recursive_check2(ROOT_INO);
1235 /* Wed Feb 9 15:17:06 MST 2000 */
1236 /* dynamically allocate name_list (instead of making it static) */
1237 static void alloc_name_list(void)
1241 name_list = xmalloc(sizeof(char *) * MAX_DEPTH);
1242 for (i = 0; i < MAX_DEPTH; i++)
1243 name_list[i] = xmalloc(sizeof(char) * BUFSIZ + 1);
1247 /* execute this atexit() to deallocate name_list[] */
1248 /* piptigger was here */
1249 static void free_name_list(void)
1254 for (i = 0; i < MAX_DEPTH; i++) {
1264 extern int fsck_minix_main(int argc, char **argv)
1271 /* Don't bother to free memory. Exit does
1272 * that automagically, so we can save a few bytes */
1273 //atexit(free_name_list);
1276 program_name = *argv;
1277 if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
1278 die("bad inode size");
1280 if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
1281 die("bad v2 inode size");
1283 while (argc-- > 1) {
1285 if (argv[0][0] != '-') {
1289 device_name = argv[0];
1292 switch (argv[0][0]) {
1322 check_mount(); /* trying to check a mounted filesystem? */
1323 if (repair && !automatic) {
1324 if (!isatty(0) || !isatty(1))
1325 die("need terminal for interactive repairs");
1327 IN = open(device_name, repair ? O_RDWR : O_RDONLY);
1329 die("unable to open '%s'");
1330 for (count = 0; count < 3; count++)
1335 * Determine whether or not we should continue with the checking.
1336 * This is based on the status of the filesystem valid and error
1337 * flags and whether or not the -f switch was specified on the
1340 printf("%s, %s\n", program_name, program_version);
1341 if (!(Super.s_state & MINIX_ERROR_FS) &&
1342 (Super.s_state & MINIX_VALID_FS) && !force) {
1344 printf("%s is clean, no check.\n", device_name);
1347 printf("Forcing filesystem check on %s.\n", device_name);
1349 printf("Filesystem on %s is dirty, needs checking.\n",
1354 if (repair && !automatic) {
1355 tcgetattr(0, &termios);
1357 tmp.c_lflag &= ~(ICANON | ECHO);
1358 tcsetattr(0, TCSANOW, &tmp);
1374 for (i = 1, free = 0; i <= INODES; i++)
1375 if (!inode_in_use(i))
1377 printf("\n%6ld inodes used (%ld%%)\n", (INODES - free),
1378 100 * (INODES - free) / INODES);
1379 for (i = FIRSTZONE, free = 0; i < ZONES; i++)
1380 if (!zone_in_use(i))
1382 printf("%6ld zones used (%ld%%)\n", (ZONES - free),
1383 100 * (ZONES - free) / ZONES);
1384 printf("\n%6d regular files\n"
1386 "%6d character device files\n"
1387 "%6d block device files\n"
1389 "%6d symbolic links\n"
1392 regular, directory, chardev, blockdev,
1393 links - 2 * directory + 1, symlinks,
1394 total - 2 * directory + 1);
1398 printf("----------------------------\n"
1399 "FILE SYSTEM HAS BEEN CHANGED\n"
1400 "----------------------------\n");
1401 for (count = 0; count < 3; count++)
1404 write_super_block();
1406 if (repair && !automatic)
1407 tcsetattr(0, TCSANOW, &termios);
1411 if (errors_uncorrected)