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 :-).
101 #include <linux/fs.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\n", program_name);
203 "Performs a consistency check for MINIX filesystems.\n\n");
204 fprintf(stderr, "OPTIONS:\n");
205 fprintf(stderr, "\t-l\tLists all filenames\n");
206 fprintf(stderr, "\t-r\tPerform interactive repairs\n");
207 fprintf(stderr, "\t-a\tPerform automatic repairs\n");
208 fprintf(stderr, "\t-v\tverbose\n");
209 fprintf(stderr, "\t-s\tOutputs super-block information\n");
211 "\t-m\tActivates MINIX-like \"mode not cleared\" warnings\n");
212 fprintf(stderr, "\t-f\tForce file system check.\n\n");
216 static void die(const char *str)
218 fprintf(stderr, "%s: %s\n", program_name, str);
223 * This simply goes through the file-name data and prints out the
226 static void print_current_name(void)
230 while (i < name_depth)
231 printf("/%.*s", namelen, name_list[i++]);
236 static int ask(const char *string, int def)
242 errors_uncorrected = 1;
248 errors_uncorrected = 1;
251 printf(def ? "%s (y/n)? " : "%s (n/y)? ", string);
254 if ((c = getchar()) == EOF) {
256 errors_uncorrected = 1;
263 } else if (c == 'N') {
266 } else if (c == ' ' || c == '\n')
273 errors_uncorrected = 1;
279 * Make certain that we aren't checking a filesystem that is on a
280 * mounted partition. Code adapted from e2fsck, Copyright (C) 1993,
281 * 1994 Theodore Ts'o. Also licensed under GPL.
283 static void check_mount(void)
290 if ((f = setmntent(MOUNTED, "r")) == NULL)
292 while ((mnt = getmntent(f)) != NULL)
293 if (strcmp(device_name, mnt->mnt_fsname) == 0)
300 * If the root is mounted read-only, then /etc/mtab is
301 * probably not correct; so we won't issue a warning based on
304 fd = open(MOUNTED, O_RDWR);
305 if (fd < 0 && errno == EROFS)
310 printf("%s is mounted. ", device_name);
311 if (isatty(0) && isatty(1))
312 cont = ask("Do you really want to continue", 0);
316 printf("check aborted.\n");
323 * check_zone_nr checks to see that *nr is a valid zone nr. If it
324 * isn't, it will possibly be repaired. Check_zone_nr sets *corrected
325 * if an error was corrected, and returns the zone (0 for no zone
326 * or a bad zone-number).
328 static int check_zone_nr(unsigned short *nr, int *corrected)
333 printf("Zone nr < FIRSTZONE in file `");
334 else if (*nr >= ZONES)
335 printf("Zone nr >= ZONES in file `");
338 print_current_name();
340 if (ask("Remove block", 1)) {
348 static int check_zone_nr2(unsigned int *nr, int *corrected)
353 printf("Zone nr < FIRSTZONE in file `");
354 else if (*nr >= ZONES)
355 printf("Zone nr >= ZONES in file `");
358 print_current_name();
360 if (ask("Remove block", 1)) {
369 * read-block reads block nr into the buffer at addr.
371 static void read_block(unsigned int nr, char *addr)
374 memset(addr, 0, BLOCK_SIZE);
377 if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) {
378 printf("Read error: unable to seek to block in file '");
379 print_current_name();
381 memset(addr, 0, BLOCK_SIZE);
382 errors_uncorrected = 1;
383 } else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) {
384 printf("Read error: bad block in file '");
385 print_current_name();
387 memset(addr, 0, BLOCK_SIZE);
388 errors_uncorrected = 1;
393 * write_block writes block nr to disk.
395 static void write_block(unsigned int nr, char *addr)
399 if (nr < FIRSTZONE || nr >= ZONES) {
400 printf("Internal error: trying to write bad block\n"
401 "Write request ignored\n");
402 errors_uncorrected = 1;
405 if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET))
406 die("seek failed in write_block");
407 if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) {
408 printf("Write error: bad block in file '");
409 print_current_name();
411 errors_uncorrected = 1;
416 * map-block calculates the absolute block nr of a block in a file.
417 * It sets 'changed' if the inode has needed changing, and re-writes
418 * any indirect blocks with errors.
420 static int map_block(struct minix_inode *inode, unsigned int blknr)
422 unsigned short ind[BLOCK_SIZE >> 1];
423 unsigned short dind[BLOCK_SIZE >> 1];
424 int blk_chg, block, result;
427 return check_zone_nr(inode->i_zone + blknr, &changed);
430 block = check_zone_nr(inode->i_zone + 7, &changed);
431 read_block(block, (char *) ind);
433 result = check_zone_nr(blknr + ind, &blk_chg);
435 write_block(block, (char *) ind);
439 block = check_zone_nr(inode->i_zone + 8, &changed);
440 read_block(block, (char *) dind);
442 result = check_zone_nr(dind + (blknr / 512), &blk_chg);
444 write_block(block, (char *) dind);
446 read_block(block, (char *) ind);
448 result = check_zone_nr(ind + (blknr % 512), &blk_chg);
450 write_block(block, (char *) ind);
455 static int map_block2(struct minix2_inode *inode, unsigned int blknr)
457 unsigned int ind[BLOCK_SIZE >> 2];
458 unsigned int dind[BLOCK_SIZE >> 2];
459 unsigned int tind[BLOCK_SIZE >> 2];
460 int blk_chg, block, result;
463 return check_zone_nr2(inode->i_zone + blknr, &changed);
466 block = check_zone_nr2(inode->i_zone + 7, &changed);
467 read_block(block, (char *) ind);
469 result = check_zone_nr2(blknr + ind, &blk_chg);
471 write_block(block, (char *) ind);
475 if (blknr >= 256 * 256) {
476 block = check_zone_nr2(inode->i_zone + 8, &changed);
477 read_block(block, (char *) dind);
479 result = check_zone_nr2(dind + blknr / 256, &blk_chg);
481 write_block(block, (char *) dind);
483 read_block(block, (char *) ind);
485 result = check_zone_nr2(ind + blknr % 256, &blk_chg);
487 write_block(block, (char *) ind);
491 block = check_zone_nr2(inode->i_zone + 9, &changed);
492 read_block(block, (char *) tind);
494 result = check_zone_nr2(tind + blknr / (256 * 256), &blk_chg);
496 write_block(block, (char *) tind);
498 read_block(block, (char *) dind);
500 result = check_zone_nr2(dind + (blknr / 256) % 256, &blk_chg);
502 write_block(block, (char *) dind);
504 read_block(block, (char *) ind);
506 result = check_zone_nr2(ind + blknr % 256, &blk_chg);
508 write_block(block, (char *) ind);
513 static void write_super_block(void)
516 * Set the state of the filesystem based on whether or not there
517 * are uncorrected errors. The filesystem valid flag is
518 * unconditionally set if we get this far.
520 Super.s_state |= MINIX_VALID_FS;
521 if (errors_uncorrected)
522 Super.s_state |= MINIX_ERROR_FS;
524 Super.s_state &= ~MINIX_ERROR_FS;
526 if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
527 die("seek failed in write_super_block");
528 if (BLOCK_SIZE != write(IN, super_block_buffer, BLOCK_SIZE))
529 die("unable to write super-block");
534 static void write_tables(void)
538 if (IMAPS * BLOCK_SIZE != write(IN, inode_map, IMAPS * BLOCK_SIZE))
539 die("Unable to write inode map");
540 if (ZMAPS * BLOCK_SIZE != write(IN, zone_map, ZMAPS * BLOCK_SIZE))
541 die("Unable to write zone map");
542 if (INODE_BUFFER_SIZE != write(IN, inode_buffer, INODE_BUFFER_SIZE))
543 die("Unable to write inodes");
546 static void get_dirsize(void)
549 char blk[BLOCK_SIZE];
554 block = Inode2[ROOT_INO].i_zone[0];
557 block = Inode[ROOT_INO].i_zone[0];
558 read_block(block, blk);
559 for (size = 16; size < BLOCK_SIZE; size <<= 1) {
560 if (strcmp(blk + size + 2, "..") == 0) {
569 static void read_superblock(void)
571 if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
573 if (BLOCK_SIZE != read(IN, super_block_buffer, BLOCK_SIZE))
574 die("unable to read super block");
575 if (MAGIC == MINIX_SUPER_MAGIC) {
579 } else if (MAGIC == MINIX_SUPER_MAGIC2) {
584 } else if (MAGIC == MINIX2_SUPER_MAGIC) {
588 } else if (MAGIC == MINIX2_SUPER_MAGIC2) {
594 die("bad magic number in super-block");
595 if (ZONESIZE != 0 || BLOCK_SIZE != 1024)
596 die("Only 1k blocks/zones supported");
597 if (IMAPS * BLOCK_SIZE * 8 < INODES + 1)
598 die("bad s_imap_blocks field in super-block");
599 if (ZMAPS * BLOCK_SIZE * 8 < ZONES - FIRSTZONE + 1)
600 die("bad s_zmap_blocks field in super-block");
603 static void read_tables(void)
605 inode_map = xmalloc(IMAPS * BLOCK_SIZE);
606 zone_map = xmalloc(ZMAPS * BLOCK_SIZE);
607 memset(inode_map, 0, sizeof(inode_map));
608 memset(zone_map, 0, sizeof(zone_map));
609 inode_buffer = xmalloc(INODE_BUFFER_SIZE);
610 inode_count = xmalloc(INODES + 1);
611 zone_count = xmalloc(ZONES);
612 if (IMAPS * BLOCK_SIZE != read(IN, inode_map, IMAPS * BLOCK_SIZE))
613 die("Unable to read inode map");
614 if (ZMAPS * BLOCK_SIZE != read(IN, zone_map, ZMAPS * BLOCK_SIZE))
615 die("Unable to read zone map");
616 if (INODE_BUFFER_SIZE != read(IN, inode_buffer, INODE_BUFFER_SIZE))
617 die("Unable to read inodes");
618 if (NORM_FIRSTZONE != FIRSTZONE) {
619 printf("Warning: Firstzone != Norm_firstzone\n");
620 errors_uncorrected = 1;
624 printf("%ld inodes\n", INODES);
625 printf("%ld blocks\n", ZONES);
626 printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE);
627 printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE);
628 printf("Maxsize=%ld\n", MAXSIZE);
629 printf("Filesystem state=%d\n", Super.s_state);
630 printf("namelen=%d\n\n", namelen);
634 struct minix_inode *get_inode(unsigned int nr)
636 struct minix_inode *inode;
638 if (!nr || nr > INODES)
642 if (!inode_count[nr]) {
643 if (!inode_in_use(nr)) {
644 printf("Inode %d marked not used, but used for file '", nr);
645 print_current_name();
648 if (ask("Mark in use", 1))
651 errors_uncorrected = 1;
654 if (S_ISDIR(inode->i_mode))
656 else if (S_ISREG(inode->i_mode))
658 else if (S_ISCHR(inode->i_mode))
660 else if (S_ISBLK(inode->i_mode))
662 else if (S_ISLNK(inode->i_mode))
664 else if (S_ISSOCK(inode->i_mode));
665 else if (S_ISFIFO(inode->i_mode));
667 print_current_name();
668 printf(" has mode %05o\n", inode->i_mode);
673 if (!++inode_count[nr]) {
674 printf("Warning: inode count too big.\n");
676 errors_uncorrected = 1;
682 struct minix2_inode *get_inode2(unsigned int nr)
684 struct minix2_inode *inode;
686 if (!nr || nr > INODES)
690 if (!inode_count[nr]) {
691 if (!inode_in_use(nr)) {
692 printf("Inode %d marked not used, but used for file '", nr);
693 print_current_name();
696 if (ask("Mark in use", 1))
699 errors_uncorrected = 1;
702 if (S_ISDIR(inode->i_mode))
704 else if (S_ISREG(inode->i_mode))
706 else if (S_ISCHR(inode->i_mode))
708 else if (S_ISBLK(inode->i_mode))
710 else if (S_ISLNK(inode->i_mode))
712 else if (S_ISSOCK(inode->i_mode));
713 else if (S_ISFIFO(inode->i_mode));
715 print_current_name();
716 printf(" has mode %05o\n", inode->i_mode);
720 if (!++inode_count[nr]) {
721 printf("Warning: inode count too big.\n");
723 errors_uncorrected = 1;
729 static void check_root(void)
731 struct minix_inode *inode = Inode + ROOT_INO;
733 if (!inode || !S_ISDIR(inode->i_mode))
734 die("root inode isn't a directory");
738 static void check_root2(void)
740 struct minix2_inode *inode = Inode2 + ROOT_INO;
742 if (!inode || !S_ISDIR(inode->i_mode))
743 die("root inode isn't a directory");
747 static int add_zone(unsigned short *znr, int *corrected)
753 block = check_zone_nr(znr, corrected);
756 if (zone_count[block]) {
757 printf("Block has been used before. Now in file `");
758 print_current_name();
760 if (ask("Clear", 1)) {
768 if (!zone_in_use(block)) {
769 printf("Block %d in file `", block);
770 print_current_name();
771 printf("' is marked not in use.");
772 if (ask("Correct", 1))
775 if (!++zone_count[block])
781 static int add_zone2(unsigned int *znr, int *corrected)
787 block = check_zone_nr2(znr, corrected);
790 if (zone_count[block]) {
791 printf("Block has been used before. Now in file `");
792 print_current_name();
794 if (ask("Clear", 1)) {
802 if (!zone_in_use(block)) {
803 printf("Block %d in file `", block);
804 print_current_name();
805 printf("' is marked not in use.");
806 if (ask("Correct", 1))
809 if (!++zone_count[block])
815 static void add_zone_ind(unsigned short *znr, int *corrected)
817 static char blk[BLOCK_SIZE];
821 block = add_zone(znr, corrected);
824 read_block(block, blk);
825 for (i = 0; i < (BLOCK_SIZE >> 1); i++)
826 add_zone(i + (unsigned short *) blk, &chg_blk);
828 write_block(block, blk);
832 static void add_zone_ind2(unsigned int *znr, int *corrected)
834 static char blk[BLOCK_SIZE];
838 block = add_zone2(znr, corrected);
841 read_block(block, blk);
842 for (i = 0; i < BLOCK_SIZE >> 2; i++)
843 add_zone2(i + (unsigned int *) blk, &chg_blk);
845 write_block(block, blk);
849 static void add_zone_dind(unsigned short *znr, int *corrected)
851 static char blk[BLOCK_SIZE];
855 block = add_zone(znr, corrected);
858 read_block(block, blk);
859 for (i = 0; i < (BLOCK_SIZE >> 1); i++)
860 add_zone_ind(i + (unsigned short *) blk, &blk_chg);
862 write_block(block, blk);
866 static void add_zone_dind2(unsigned int *znr, int *corrected)
868 static char blk[BLOCK_SIZE];
872 block = add_zone2(znr, corrected);
875 read_block(block, blk);
876 for (i = 0; i < BLOCK_SIZE >> 2; i++)
877 add_zone_ind2(i + (unsigned int *) blk, &blk_chg);
879 write_block(block, blk);
882 static void add_zone_tind2(unsigned int *znr, int *corrected)
884 static char blk[BLOCK_SIZE];
888 block = add_zone2(znr, corrected);
891 read_block(block, blk);
892 for (i = 0; i < BLOCK_SIZE >> 2; i++)
893 add_zone_dind2(i + (unsigned int *) blk, &blk_chg);
895 write_block(block, blk);
899 static void check_zones(unsigned int i)
901 struct minix_inode *inode;
903 if (!i || i > INODES)
905 if (inode_count[i] > 1) /* have we counted this file already? */
908 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
909 !S_ISLNK(inode->i_mode)) return;
910 for (i = 0; i < 7; i++)
911 add_zone(i + inode->i_zone, &changed);
912 add_zone_ind(7 + inode->i_zone, &changed);
913 add_zone_dind(8 + inode->i_zone, &changed);
917 static void check_zones2(unsigned int i)
919 struct minix2_inode *inode;
921 if (!i || i > INODES)
923 if (inode_count[i] > 1) /* have we counted this file already? */
926 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)
927 && !S_ISLNK(inode->i_mode))
929 for (i = 0; i < 7; i++)
930 add_zone2(i + inode->i_zone, &changed);
931 add_zone_ind2(7 + inode->i_zone, &changed);
932 add_zone_dind2(8 + inode->i_zone, &changed);
933 add_zone_tind2(9 + inode->i_zone, &changed);
937 static void check_file(struct minix_inode *dir, unsigned int offset)
939 static char blk[BLOCK_SIZE];
940 struct minix_inode *inode;
945 block = map_block(dir, offset / BLOCK_SIZE);
946 read_block(block, blk);
947 name = blk + (offset % BLOCK_SIZE) + 2;
948 ino = *(unsigned short *) (name - 2);
950 print_current_name();
951 printf(" contains a bad inode number for file '");
952 printf("%.*s'.", namelen, name);
953 if (ask(" Remove", 1)) {
954 *(unsigned short *) (name - 2) = 0;
955 write_block(block, blk);
959 if (name_depth < MAX_DEPTH)
960 strncpy(name_list[name_depth], name, namelen);
962 inode = get_inode(ino);
965 if (!inode || strcmp(".", name)) {
966 print_current_name();
967 printf(": bad directory: '.' isn't first\n");
968 errors_uncorrected = 1;
972 if (offset == dirsize) {
973 if (!inode || strcmp("..", name)) {
974 print_current_name();
975 printf(": bad directory: '..' isn't second\n");
976 errors_uncorrected = 1;
982 if (name_depth < MAX_DEPTH)
983 strncpy(name_list[name_depth], name, namelen);
987 printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
988 print_current_name();
989 if (S_ISDIR(inode->i_mode))
995 if (inode && S_ISDIR(inode->i_mode))
996 recursive_check(ino);
1002 static void check_file2(struct minix2_inode *dir, unsigned int offset)
1004 static char blk[BLOCK_SIZE];
1005 struct minix2_inode *inode;
1010 block = map_block2(dir, offset / BLOCK_SIZE);
1011 read_block(block, blk);
1012 name = blk + (offset % BLOCK_SIZE) + 2;
1013 ino = *(unsigned short *) (name - 2);
1015 print_current_name();
1016 printf(" contains a bad inode number for file '");
1017 printf("%.*s'.", namelen, name);
1018 if (ask(" Remove", 1)) {
1019 *(unsigned short *) (name - 2) = 0;
1020 write_block(block, blk);
1024 if (name_depth < MAX_DEPTH)
1025 strncpy(name_list[name_depth], name, namelen);
1027 inode = get_inode2(ino);
1030 if (!inode || strcmp(".", name)) {
1031 print_current_name();
1032 printf(": bad directory: '.' isn't first\n");
1033 errors_uncorrected = 1;
1037 if (offset == dirsize) {
1038 if (!inode || strcmp("..", name)) {
1039 print_current_name();
1040 printf(": bad directory: '..' isn't second\n");
1041 errors_uncorrected = 1;
1050 printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
1051 print_current_name();
1052 if (S_ISDIR(inode->i_mode))
1058 if (inode && S_ISDIR(inode->i_mode))
1059 recursive_check2(ino);
1065 static void recursive_check(unsigned int ino)
1067 struct minix_inode *dir;
1068 unsigned int offset;
1071 if (!S_ISDIR(dir->i_mode))
1072 die("internal error");
1073 if (dir->i_size < 2 * dirsize) {
1074 print_current_name();
1075 printf(": bad directory: size<32");
1076 errors_uncorrected = 1;
1078 for (offset = 0; offset < dir->i_size; offset += dirsize)
1079 check_file(dir, offset);
1083 static void recursive_check2(unsigned int ino)
1085 struct minix2_inode *dir;
1086 unsigned int offset;
1089 if (!S_ISDIR(dir->i_mode))
1090 die("internal error");
1091 if (dir->i_size < 2 * dirsize) {
1092 print_current_name();
1093 printf(": bad directory: size < 32");
1094 errors_uncorrected = 1;
1096 for (offset = 0; offset < dir->i_size; offset += dirsize)
1097 check_file2(dir, offset);
1101 static int bad_zone(int i)
1105 if (BLOCK_SIZE * i != lseek(IN, BLOCK_SIZE * i, SEEK_SET))
1106 die("seek failed in bad_zone");
1107 return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE));
1110 static void check_counts(void)
1114 for (i = 1; i <= INODES; i++) {
1115 if (!inode_in_use(i) && Inode[i].i_mode && warn_mode) {
1116 printf("Inode %d mode not cleared.", i);
1117 if (ask("Clear", 1)) {
1118 Inode[i].i_mode = 0;
1122 if (!inode_count[i]) {
1123 if (!inode_in_use(i))
1125 printf("Inode %d not used, marked used in the bitmap.", i);
1126 if (ask("Clear", 1))
1130 if (!inode_in_use(i)) {
1131 printf("Inode %d used, marked unused in the bitmap.", i);
1135 if (Inode[i].i_nlinks != inode_count[i]) {
1136 printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
1137 i, Inode[i].i_mode, Inode[i].i_nlinks, inode_count[i]);
1138 if (ask("Set i_nlinks to count", 1)) {
1139 Inode[i].i_nlinks = inode_count[i];
1144 for (i = FIRSTZONE; i < ZONES; i++) {
1145 if (zone_in_use(i) == zone_count[i])
1147 if (!zone_count[i]) {
1150 printf("Zone %d: marked in use, no file uses it.", i);
1151 if (ask("Unmark", 1))
1155 printf("Zone %d: %sin use, counted=%d\n",
1156 i, zone_in_use(i) ? "" : "not ", zone_count[i]);
1161 static void check_counts2(void)
1165 for (i = 1; i <= INODES; i++) {
1166 if (!inode_in_use(i) && Inode2[i].i_mode && warn_mode) {
1167 printf("Inode %d mode not cleared.", i);
1168 if (ask("Clear", 1)) {
1169 Inode2[i].i_mode = 0;
1173 if (!inode_count[i]) {
1174 if (!inode_in_use(i))
1176 printf("Inode %d not used, marked used in the bitmap.", i);
1177 if (ask("Clear", 1))
1181 if (!inode_in_use(i)) {
1182 printf("Inode %d used, marked unused in the bitmap.", i);
1186 if (Inode2[i].i_nlinks != inode_count[i]) {
1187 printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
1188 i, Inode2[i].i_mode, Inode2[i].i_nlinks,
1190 if (ask("Set i_nlinks to count", 1)) {
1191 Inode2[i].i_nlinks = inode_count[i];
1196 for (i = FIRSTZONE; i < ZONES; i++) {
1197 if (zone_in_use(i) == zone_count[i])
1199 if (!zone_count[i]) {
1202 printf("Zone %d: marked in use, no file uses it.", i);
1203 if (ask("Unmark", 1))
1207 printf("Zone %d: %sin use, counted=%d\n",
1208 i, zone_in_use(i) ? "" : "not ", zone_count[i]);
1213 static void check(void)
1215 memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
1216 memset(zone_count, 0, ZONES * sizeof(*zone_count));
1217 check_zones(ROOT_INO);
1218 recursive_check(ROOT_INO);
1223 static void check2(void)
1225 memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
1226 memset(zone_count, 0, ZONES * sizeof(*zone_count));
1227 check_zones2(ROOT_INO);
1228 recursive_check2(ROOT_INO);
1233 /* Wed Feb 9 15:17:06 MST 2000 */
1234 /* dynamically allocate name_list (instead of making it static) */
1235 static void alloc_name_list(void)
1239 name_list = xmalloc(sizeof(char *) * MAX_DEPTH);
1240 for (i = 0; i < MAX_DEPTH; i++)
1241 name_list[i] = xmalloc(sizeof(char) * BUFSIZ + 1);
1245 /* execute this atexit() to deallocate name_list[] */
1246 /* piptigger was here */
1247 static void free_name_list(void)
1252 for (i = 0; i < MAX_DEPTH; i++) {
1262 extern int fsck_minix_main(int argc, char **argv)
1269 /* Don't bother to free memory. Exit does
1270 * that automagically, so we can save a few bytes */
1271 //atexit(free_name_list);
1274 program_name = *argv;
1275 if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
1276 die("bad inode size");
1278 if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
1279 die("bad v2 inode size");
1281 while (argc-- > 1) {
1283 if (argv[0][0] != '-') {
1287 device_name = argv[0];
1290 switch (argv[0][0]) {
1320 check_mount(); /* trying to check a mounted filesystem? */
1321 if (repair && !automatic) {
1322 if (!isatty(0) || !isatty(1))
1323 die("need terminal for interactive repairs");
1325 IN = open(device_name, repair ? O_RDWR : O_RDONLY);
1327 die("unable to open '%s'");
1328 for (count = 0; count < 3; count++)
1333 * Determine whether or not we should continue with the checking.
1334 * This is based on the status of the filesystem valid and error
1335 * flags and whether or not the -f switch was specified on the
1338 printf("%s, %s\n", program_name, program_version);
1339 if (!(Super.s_state & MINIX_ERROR_FS) &&
1340 (Super.s_state & MINIX_VALID_FS) && !force) {
1342 printf("%s is clean, no check.\n", device_name);
1345 printf("Forcing filesystem check on %s.\n", device_name);
1347 printf("Filesystem on %s is dirty, needs checking.\n",
1352 if (repair && !automatic) {
1353 tcgetattr(0, &termios);
1355 tmp.c_lflag &= ~(ICANON | ECHO);
1356 tcsetattr(0, TCSANOW, &tmp);
1372 for (i = 1, free = 0; i <= INODES; i++)
1373 if (!inode_in_use(i))
1375 printf("\n%6ld inodes used (%ld%%)\n", (INODES - free),
1376 100 * (INODES - free) / INODES);
1377 for (i = FIRSTZONE, free = 0; i < ZONES; i++)
1378 if (!zone_in_use(i))
1380 printf("%6ld zones used (%ld%%)\n", (ZONES - free),
1381 100 * (ZONES - free) / ZONES);
1382 printf("\n%6d regular files\n"
1384 "%6d character device files\n"
1385 "%6d block device files\n"
1387 "%6d symbolic links\n"
1390 regular, directory, chardev, blockdev,
1391 links - 2 * directory + 1, symlinks,
1392 total - 2 * directory + 1);
1396 printf("----------------------------\n"
1397 "FILE SYSTEM HAS BEEN CHANGED\n"
1398 "----------------------------\n");
1399 for (count = 0; count < 3; count++)
1402 write_super_block();
1404 if (repair && !automatic)
1405 tcsetattr(0, TCSANOW, &termios);
1409 if (errors_uncorrected)