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/param.h>
103 typedef unsigned char u8;
104 typedef unsigned short u16;
105 typedef unsigned int u32;
108 #define MINIX_ROOT_INO 1
109 #define MINIX_LINK_MAX 250
110 #define MINIX2_LINK_MAX 65530
112 #define MINIX_I_MAP_SLOTS 8
113 #define MINIX_Z_MAP_SLOTS 64
114 #define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
115 #define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
116 #define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */
117 #define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */
118 #define MINIX_VALID_FS 0x0001 /* Clean fs. */
119 #define MINIX_ERROR_FS 0x0002 /* fs has errors. */
121 #define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
122 #define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode)))
124 #define MINIX_V1 0x0001 /* original minix fs */
125 #define MINIX_V2 0x0002 /* minix V2 fs */
127 #define INODE_VERSION(inode) inode->i_sb->u.minix_sb.s_version
130 * This is the original minix inode layout on disk.
131 * Note the 8-bit gid and atime and ctime.
144 * The new minix inode has all the time entries, as well as
145 * long block numbers and a third indirect block (7+1+1+1
146 * instead of 7+1+1). Also, some previously 8-bit values are
147 * now 16-bit. The inode is now 64 bytes instead of 32.
149 struct minix2_inode {
162 * minix super-block data on disk
164 struct minix_super_block {
177 struct minix_dir_entry {
182 #define BLOCK_SIZE_BITS 10
183 #define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
185 #define NAME_MAX 255 /* # chars in a file name */
187 #define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
189 #define MINIX_VALID_FS 0x0001 /* Clean fs. */
190 #define MINIX_ERROR_FS 0x0002 /* fs has errors. */
192 #define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
193 #define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
196 #define BLKGETSIZE _IO(0x12,96) /* return device size */
199 #ifdef MINIX2_SUPER_MAGIC2
200 #define HAVE_MINIX2 1
209 #define UPPER(size,n) ((size+((n)-1))/(n))
210 #define INODE_SIZE (sizeof(struct minix_inode))
212 #define INODE_SIZE2 (sizeof(struct minix2_inode))
213 #define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
214 : MINIX_INODES_PER_BLOCK))
216 #define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
218 #define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
220 #define BITS_PER_BLOCK (BLOCK_SIZE<<3)
222 static char *program_version = "1.2 - 11/11/96";
223 static char *device_name = NULL;
225 static int repair = 0, automatic = 0, verbose = 0, list = 0, show =
226 0, warn_mode = 0, force = 0;
227 static int directory = 0, regular = 0, blockdev = 0, chardev = 0, links =
228 0, symlinks = 0, total = 0;
230 static int changed = 0; /* flags if the filesystem has been changed */
231 static int errors_uncorrected = 0; /* flag if some error was not corrected */
232 static int dirsize = 16;
233 static int namelen = 14;
234 static int version2 = 0;
235 static struct termios termios;
236 static int termios_set = 0;
240 static int name_depth = 0;
241 // static char name_list[MAX_DEPTH][BUFSIZ + 1];
242 static char **name_list = NULL;
244 static char *inode_buffer = NULL;
246 #define Inode (((struct minix_inode *) inode_buffer)-1)
247 #define Inode2 (((struct minix2_inode *) inode_buffer)-1)
248 static char super_block_buffer[BLOCK_SIZE];
250 #define Super (*(struct minix_super_block *)super_block_buffer)
251 #define INODES ((unsigned long)Super.s_ninodes)
253 #define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
255 #define ZONES ((unsigned long)(Super.s_nzones))
257 #define IMAPS ((unsigned long)Super.s_imap_blocks)
258 #define ZMAPS ((unsigned long)Super.s_zmap_blocks)
259 #define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
260 #define ZONESIZE ((unsigned long)Super.s_log_zone_size)
261 #define MAXSIZE ((unsigned long)Super.s_max_size)
262 #define MAGIC (Super.s_magic)
263 #define NORM_FIRSTZONE (2+IMAPS+ZMAPS+INODE_BLOCKS)
265 static char *inode_map;
266 static char *zone_map;
268 static unsigned char *inode_count = NULL;
269 static unsigned char *zone_count = NULL;
271 static void recursive_check(unsigned int ino);
272 static void recursive_check2(unsigned int ino);
274 #define inode_in_use(x) (isset(inode_map,(x)))
275 #define zone_in_use(x) (isset(zone_map,(x)-FIRSTZONE+1))
277 #define mark_inode(x) (setbit(inode_map,(x)),changed=1)
278 #define unmark_inode(x) (clrbit(inode_map,(x)),changed=1)
280 #define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1),changed=1)
281 #define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1),changed=1)
283 static void leave(int) __attribute__ ((noreturn));
284 static void leave(int status)
287 tcsetattr(0, TCSANOW, &termios);
291 const char fsck_minix_usage[] =
292 "Usage: fsck.minix [-larvsmf] /dev/name\n"
293 #ifndef BB_FEATURE_TRIVIAL_HELP
294 "\nPerforms a consistency check for MINIX filesystems.\n\n"
296 "\t-l\tLists all filenames\n"
297 "\t-r\tPerform interactive repairs\n"
298 "\t-a\tPerform automatic repairs\n"
300 "\t-s\tOutputs super-block information\n"
301 "\t-m\tActivates MINIX-like \"mode not cleared\" warnings\n"
302 "\t-f\tForce file system check.\n\n"
306 static void show_usage(void)
308 usage(fsck_minix_usage);
311 static void die(const char *str)
313 errorMsg("%s\n", str);
318 * This simply goes through the file-name data and prints out the
321 static void print_current_name(void)
325 while (i < name_depth)
326 printf("/%.*s", namelen, name_list[i++]);
331 static int ask(const char *string, int def)
337 errors_uncorrected = 1;
343 errors_uncorrected = 1;
346 printf(def ? "%s (y/n)? " : "%s (n/y)? ", string);
349 if ((c = getchar()) == EOF) {
351 errors_uncorrected = 1;
358 } else if (c == 'N') {
361 } else if (c == ' ' || c == '\n')
368 errors_uncorrected = 1;
374 * Make certain that we aren't checking a filesystem that is on a
375 * mounted partition. Code adapted from e2fsck, Copyright (C) 1993,
376 * 1994 Theodore Ts'o. Also licensed under GPL.
378 static void check_mount(void)
385 if ((f = setmntent(MOUNTED, "r")) == NULL)
387 while ((mnt = getmntent(f)) != NULL)
388 if (strcmp(device_name, mnt->mnt_fsname) == 0)
395 * If the root is mounted read-only, then /etc/mtab is
396 * probably not correct; so we won't issue a warning based on
399 fd = open(MOUNTED, O_RDWR);
400 if (fd < 0 && errno == EROFS)
405 printf("%s is mounted. ", device_name);
406 if (isatty(0) && isatty(1))
407 cont = ask("Do you really want to continue", 0);
411 printf("check aborted.\n");
418 * check_zone_nr checks to see that *nr is a valid zone nr. If it
419 * isn't, it will possibly be repaired. Check_zone_nr sets *corrected
420 * if an error was corrected, and returns the zone (0 for no zone
421 * or a bad zone-number).
423 static int check_zone_nr(unsigned short *nr, int *corrected)
428 printf("Zone nr < FIRSTZONE in file `");
429 else if (*nr >= ZONES)
430 printf("Zone nr >= ZONES in file `");
433 print_current_name();
435 if (ask("Remove block", 1)) {
443 static int check_zone_nr2(unsigned int *nr, int *corrected)
448 printf("Zone nr < FIRSTZONE in file `");
449 else if (*nr >= ZONES)
450 printf("Zone nr >= ZONES in file `");
453 print_current_name();
455 if (ask("Remove block", 1)) {
464 * read-block reads block nr into the buffer at addr.
466 static void read_block(unsigned int nr, char *addr)
469 memset(addr, 0, BLOCK_SIZE);
472 if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) {
473 printf("Read error: unable to seek to block in file '");
474 print_current_name();
476 memset(addr, 0, BLOCK_SIZE);
477 errors_uncorrected = 1;
478 } else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) {
479 printf("Read error: bad block in file '");
480 print_current_name();
482 memset(addr, 0, BLOCK_SIZE);
483 errors_uncorrected = 1;
488 * write_block writes block nr to disk.
490 static void write_block(unsigned int nr, char *addr)
494 if (nr < FIRSTZONE || nr >= ZONES) {
495 printf("Internal error: trying to write bad block\n"
496 "Write request ignored\n");
497 errors_uncorrected = 1;
500 if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET))
501 die("seek failed in write_block");
502 if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) {
503 printf("Write error: bad block in file '");
504 print_current_name();
506 errors_uncorrected = 1;
511 * map-block calculates the absolute block nr of a block in a file.
512 * It sets 'changed' if the inode has needed changing, and re-writes
513 * any indirect blocks with errors.
515 static int map_block(struct minix_inode *inode, unsigned int blknr)
517 unsigned short ind[BLOCK_SIZE >> 1];
518 unsigned short dind[BLOCK_SIZE >> 1];
519 int blk_chg, block, result;
522 return check_zone_nr(inode->i_zone + blknr, &changed);
525 block = check_zone_nr(inode->i_zone + 7, &changed);
526 read_block(block, (char *) ind);
528 result = check_zone_nr(blknr + ind, &blk_chg);
530 write_block(block, (char *) ind);
534 block = check_zone_nr(inode->i_zone + 8, &changed);
535 read_block(block, (char *) dind);
537 result = check_zone_nr(dind + (blknr / 512), &blk_chg);
539 write_block(block, (char *) dind);
541 read_block(block, (char *) ind);
543 result = check_zone_nr(ind + (blknr % 512), &blk_chg);
545 write_block(block, (char *) ind);
550 static int map_block2(struct minix2_inode *inode, unsigned int blknr)
552 unsigned int ind[BLOCK_SIZE >> 2];
553 unsigned int dind[BLOCK_SIZE >> 2];
554 unsigned int tind[BLOCK_SIZE >> 2];
555 int blk_chg, block, result;
558 return check_zone_nr2(inode->i_zone + blknr, &changed);
561 block = check_zone_nr2(inode->i_zone + 7, &changed);
562 read_block(block, (char *) ind);
564 result = check_zone_nr2(blknr + ind, &blk_chg);
566 write_block(block, (char *) ind);
570 if (blknr >= 256 * 256) {
571 block = check_zone_nr2(inode->i_zone + 8, &changed);
572 read_block(block, (char *) dind);
574 result = check_zone_nr2(dind + blknr / 256, &blk_chg);
576 write_block(block, (char *) dind);
578 read_block(block, (char *) ind);
580 result = check_zone_nr2(ind + blknr % 256, &blk_chg);
582 write_block(block, (char *) ind);
586 block = check_zone_nr2(inode->i_zone + 9, &changed);
587 read_block(block, (char *) tind);
589 result = check_zone_nr2(tind + blknr / (256 * 256), &blk_chg);
591 write_block(block, (char *) tind);
593 read_block(block, (char *) dind);
595 result = check_zone_nr2(dind + (blknr / 256) % 256, &blk_chg);
597 write_block(block, (char *) dind);
599 read_block(block, (char *) ind);
601 result = check_zone_nr2(ind + blknr % 256, &blk_chg);
603 write_block(block, (char *) ind);
608 static void write_super_block(void)
611 * Set the state of the filesystem based on whether or not there
612 * are uncorrected errors. The filesystem valid flag is
613 * unconditionally set if we get this far.
615 Super.s_state |= MINIX_VALID_FS;
616 if (errors_uncorrected)
617 Super.s_state |= MINIX_ERROR_FS;
619 Super.s_state &= ~MINIX_ERROR_FS;
621 if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
622 die("seek failed in write_super_block");
623 if (BLOCK_SIZE != write(IN, super_block_buffer, BLOCK_SIZE))
624 die("unable to write super-block");
629 static void write_tables(void)
633 if (IMAPS * BLOCK_SIZE != write(IN, inode_map, IMAPS * BLOCK_SIZE))
634 die("Unable to write inode map");
635 if (ZMAPS * BLOCK_SIZE != write(IN, zone_map, ZMAPS * BLOCK_SIZE))
636 die("Unable to write zone map");
637 if (INODE_BUFFER_SIZE != write(IN, inode_buffer, INODE_BUFFER_SIZE))
638 die("Unable to write inodes");
641 static void get_dirsize(void)
644 char blk[BLOCK_SIZE];
649 block = Inode2[ROOT_INO].i_zone[0];
652 block = Inode[ROOT_INO].i_zone[0];
653 read_block(block, blk);
654 for (size = 16; size < BLOCK_SIZE; size <<= 1) {
655 if (strcmp(blk + size + 2, "..") == 0) {
664 static void read_superblock(void)
666 if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
668 if (BLOCK_SIZE != read(IN, super_block_buffer, BLOCK_SIZE))
669 die("unable to read super block");
670 if (MAGIC == MINIX_SUPER_MAGIC) {
674 } else if (MAGIC == MINIX_SUPER_MAGIC2) {
679 } else if (MAGIC == MINIX2_SUPER_MAGIC) {
683 } else if (MAGIC == MINIX2_SUPER_MAGIC2) {
689 die("bad magic number in super-block");
690 if (ZONESIZE != 0 || BLOCK_SIZE != 1024)
691 die("Only 1k blocks/zones supported");
692 if (IMAPS * BLOCK_SIZE * 8 < INODES + 1)
693 die("bad s_imap_blocks field in super-block");
694 if (ZMAPS * BLOCK_SIZE * 8 < ZONES - FIRSTZONE + 1)
695 die("bad s_zmap_blocks field in super-block");
698 static void read_tables(void)
700 inode_map = xmalloc(IMAPS * BLOCK_SIZE);
701 zone_map = xmalloc(ZMAPS * BLOCK_SIZE);
702 memset(inode_map, 0, sizeof(inode_map));
703 memset(zone_map, 0, sizeof(zone_map));
704 inode_buffer = xmalloc(INODE_BUFFER_SIZE);
705 inode_count = xmalloc(INODES + 1);
706 zone_count = xmalloc(ZONES);
707 if (IMAPS * BLOCK_SIZE != read(IN, inode_map, IMAPS * BLOCK_SIZE))
708 die("Unable to read inode map");
709 if (ZMAPS * BLOCK_SIZE != read(IN, zone_map, ZMAPS * BLOCK_SIZE))
710 die("Unable to read zone map");
711 if (INODE_BUFFER_SIZE != read(IN, inode_buffer, INODE_BUFFER_SIZE))
712 die("Unable to read inodes");
713 if (NORM_FIRSTZONE != FIRSTZONE) {
714 printf("Warning: Firstzone != Norm_firstzone\n");
715 errors_uncorrected = 1;
719 printf("%ld inodes\n", INODES);
720 printf("%ld blocks\n", ZONES);
721 printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE);
722 printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE);
723 printf("Maxsize=%ld\n", MAXSIZE);
724 printf("Filesystem state=%d\n", Super.s_state);
725 printf("namelen=%d\n\n", namelen);
729 struct minix_inode *get_inode(unsigned int nr)
731 struct minix_inode *inode;
733 if (!nr || nr > INODES)
737 if (!inode_count[nr]) {
738 if (!inode_in_use(nr)) {
739 printf("Inode %d marked not used, but used for file '", nr);
740 print_current_name();
743 if (ask("Mark in use", 1))
746 errors_uncorrected = 1;
749 if (S_ISDIR(inode->i_mode))
751 else if (S_ISREG(inode->i_mode))
753 else if (S_ISCHR(inode->i_mode))
755 else if (S_ISBLK(inode->i_mode))
757 else if (S_ISLNK(inode->i_mode))
759 else if (S_ISSOCK(inode->i_mode));
760 else if (S_ISFIFO(inode->i_mode));
762 print_current_name();
763 printf(" has mode %05o\n", inode->i_mode);
768 if (!++inode_count[nr]) {
769 printf("Warning: inode count too big.\n");
771 errors_uncorrected = 1;
777 struct minix2_inode *get_inode2(unsigned int nr)
779 struct minix2_inode *inode;
781 if (!nr || nr > INODES)
785 if (!inode_count[nr]) {
786 if (!inode_in_use(nr)) {
787 printf("Inode %d marked not used, but used for file '", nr);
788 print_current_name();
791 if (ask("Mark in use", 1))
794 errors_uncorrected = 1;
797 if (S_ISDIR(inode->i_mode))
799 else if (S_ISREG(inode->i_mode))
801 else if (S_ISCHR(inode->i_mode))
803 else if (S_ISBLK(inode->i_mode))
805 else if (S_ISLNK(inode->i_mode))
807 else if (S_ISSOCK(inode->i_mode));
808 else if (S_ISFIFO(inode->i_mode));
810 print_current_name();
811 printf(" has mode %05o\n", inode->i_mode);
815 if (!++inode_count[nr]) {
816 printf("Warning: inode count too big.\n");
818 errors_uncorrected = 1;
824 static void check_root(void)
826 struct minix_inode *inode = Inode + ROOT_INO;
828 if (!inode || !S_ISDIR(inode->i_mode))
829 die("root inode isn't a directory");
833 static void check_root2(void)
835 struct minix2_inode *inode = Inode2 + ROOT_INO;
837 if (!inode || !S_ISDIR(inode->i_mode))
838 die("root inode isn't a directory");
842 static int add_zone(unsigned short *znr, int *corrected)
848 block = check_zone_nr(znr, corrected);
851 if (zone_count[block]) {
852 printf("Block has been used before. Now in file `");
853 print_current_name();
855 if (ask("Clear", 1)) {
863 if (!zone_in_use(block)) {
864 printf("Block %d in file `", block);
865 print_current_name();
866 printf("' is marked not in use.");
867 if (ask("Correct", 1))
870 if (!++zone_count[block])
876 static int add_zone2(unsigned int *znr, int *corrected)
882 block = check_zone_nr2(znr, corrected);
885 if (zone_count[block]) {
886 printf("Block has been used before. Now in file `");
887 print_current_name();
889 if (ask("Clear", 1)) {
897 if (!zone_in_use(block)) {
898 printf("Block %d in file `", block);
899 print_current_name();
900 printf("' is marked not in use.");
901 if (ask("Correct", 1))
904 if (!++zone_count[block])
910 static void add_zone_ind(unsigned short *znr, int *corrected)
912 static char blk[BLOCK_SIZE];
916 block = add_zone(znr, corrected);
919 read_block(block, blk);
920 for (i = 0; i < (BLOCK_SIZE >> 1); i++)
921 add_zone(i + (unsigned short *) blk, &chg_blk);
923 write_block(block, blk);
927 static void add_zone_ind2(unsigned int *znr, int *corrected)
929 static char blk[BLOCK_SIZE];
933 block = add_zone2(znr, corrected);
936 read_block(block, blk);
937 for (i = 0; i < BLOCK_SIZE >> 2; i++)
938 add_zone2(i + (unsigned int *) blk, &chg_blk);
940 write_block(block, blk);
944 static void add_zone_dind(unsigned short *znr, int *corrected)
946 static char blk[BLOCK_SIZE];
950 block = add_zone(znr, corrected);
953 read_block(block, blk);
954 for (i = 0; i < (BLOCK_SIZE >> 1); i++)
955 add_zone_ind(i + (unsigned short *) blk, &blk_chg);
957 write_block(block, blk);
961 static void add_zone_dind2(unsigned int *znr, int *corrected)
963 static char blk[BLOCK_SIZE];
967 block = add_zone2(znr, corrected);
970 read_block(block, blk);
971 for (i = 0; i < BLOCK_SIZE >> 2; i++)
972 add_zone_ind2(i + (unsigned int *) blk, &blk_chg);
974 write_block(block, blk);
977 static void add_zone_tind2(unsigned int *znr, int *corrected)
979 static char blk[BLOCK_SIZE];
983 block = add_zone2(znr, corrected);
986 read_block(block, blk);
987 for (i = 0; i < BLOCK_SIZE >> 2; i++)
988 add_zone_dind2(i + (unsigned int *) blk, &blk_chg);
990 write_block(block, blk);
994 static void check_zones(unsigned int i)
996 struct minix_inode *inode;
998 if (!i || i > INODES)
1000 if (inode_count[i] > 1) /* have we counted this file already? */
1003 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1004 !S_ISLNK(inode->i_mode)) return;
1005 for (i = 0; i < 7; i++)
1006 add_zone(i + inode->i_zone, &changed);
1007 add_zone_ind(7 + inode->i_zone, &changed);
1008 add_zone_dind(8 + inode->i_zone, &changed);
1012 static void check_zones2(unsigned int i)
1014 struct minix2_inode *inode;
1016 if (!i || i > INODES)
1018 if (inode_count[i] > 1) /* have we counted this file already? */
1021 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)
1022 && !S_ISLNK(inode->i_mode))
1024 for (i = 0; i < 7; i++)
1025 add_zone2(i + inode->i_zone, &changed);
1026 add_zone_ind2(7 + inode->i_zone, &changed);
1027 add_zone_dind2(8 + inode->i_zone, &changed);
1028 add_zone_tind2(9 + inode->i_zone, &changed);
1032 static void check_file(struct minix_inode *dir, unsigned int offset)
1034 static char blk[BLOCK_SIZE];
1035 struct minix_inode *inode;
1040 block = map_block(dir, offset / BLOCK_SIZE);
1041 read_block(block, blk);
1042 name = blk + (offset % BLOCK_SIZE) + 2;
1043 ino = *(unsigned short *) (name - 2);
1045 print_current_name();
1046 printf(" contains a bad inode number for file '");
1047 printf("%.*s'.", namelen, name);
1048 if (ask(" Remove", 1)) {
1049 *(unsigned short *) (name - 2) = 0;
1050 write_block(block, blk);
1054 if (name_depth < MAX_DEPTH)
1055 strncpy(name_list[name_depth], name, namelen);
1057 inode = get_inode(ino);
1060 if (!inode || strcmp(".", name)) {
1061 print_current_name();
1062 printf(": bad directory: '.' isn't first\n");
1063 errors_uncorrected = 1;
1067 if (offset == dirsize) {
1068 if (!inode || strcmp("..", name)) {
1069 print_current_name();
1070 printf(": bad directory: '..' isn't second\n");
1071 errors_uncorrected = 1;
1077 if (name_depth < MAX_DEPTH)
1078 strncpy(name_list[name_depth], name, namelen);
1082 printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
1083 print_current_name();
1084 if (S_ISDIR(inode->i_mode))
1090 if (inode && S_ISDIR(inode->i_mode))
1091 recursive_check(ino);
1097 static void check_file2(struct minix2_inode *dir, unsigned int offset)
1099 static char blk[BLOCK_SIZE];
1100 struct minix2_inode *inode;
1105 block = map_block2(dir, offset / BLOCK_SIZE);
1106 read_block(block, blk);
1107 name = blk + (offset % BLOCK_SIZE) + 2;
1108 ino = *(unsigned short *) (name - 2);
1110 print_current_name();
1111 printf(" contains a bad inode number for file '");
1112 printf("%.*s'.", namelen, name);
1113 if (ask(" Remove", 1)) {
1114 *(unsigned short *) (name - 2) = 0;
1115 write_block(block, blk);
1119 if (name_depth < MAX_DEPTH)
1120 strncpy(name_list[name_depth], name, namelen);
1122 inode = get_inode2(ino);
1125 if (!inode || strcmp(".", name)) {
1126 print_current_name();
1127 printf(": bad directory: '.' isn't first\n");
1128 errors_uncorrected = 1;
1132 if (offset == dirsize) {
1133 if (!inode || strcmp("..", name)) {
1134 print_current_name();
1135 printf(": bad directory: '..' isn't second\n");
1136 errors_uncorrected = 1;
1145 printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
1146 print_current_name();
1147 if (S_ISDIR(inode->i_mode))
1153 if (inode && S_ISDIR(inode->i_mode))
1154 recursive_check2(ino);
1160 static void recursive_check(unsigned int ino)
1162 struct minix_inode *dir;
1163 unsigned int offset;
1166 if (!S_ISDIR(dir->i_mode))
1167 die("internal error");
1168 if (dir->i_size < 2 * dirsize) {
1169 print_current_name();
1170 printf(": bad directory: size<32");
1171 errors_uncorrected = 1;
1173 for (offset = 0; offset < dir->i_size; offset += dirsize)
1174 check_file(dir, offset);
1178 static void recursive_check2(unsigned int ino)
1180 struct minix2_inode *dir;
1181 unsigned int offset;
1184 if (!S_ISDIR(dir->i_mode))
1185 die("internal error");
1186 if (dir->i_size < 2 * dirsize) {
1187 print_current_name();
1188 printf(": bad directory: size < 32");
1189 errors_uncorrected = 1;
1191 for (offset = 0; offset < dir->i_size; offset += dirsize)
1192 check_file2(dir, offset);
1196 static int bad_zone(int i)
1200 if (BLOCK_SIZE * i != lseek(IN, BLOCK_SIZE * i, SEEK_SET))
1201 die("seek failed in bad_zone");
1202 return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE));
1205 static void check_counts(void)
1209 for (i = 1; i <= INODES; i++) {
1210 if (!inode_in_use(i) && Inode[i].i_mode && warn_mode) {
1211 printf("Inode %d mode not cleared.", i);
1212 if (ask("Clear", 1)) {
1213 Inode[i].i_mode = 0;
1217 if (!inode_count[i]) {
1218 if (!inode_in_use(i))
1220 printf("Inode %d not used, marked used in the bitmap.", i);
1221 if (ask("Clear", 1))
1225 if (!inode_in_use(i)) {
1226 printf("Inode %d used, marked unused in the bitmap.", i);
1230 if (Inode[i].i_nlinks != inode_count[i]) {
1231 printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
1232 i, Inode[i].i_mode, Inode[i].i_nlinks, inode_count[i]);
1233 if (ask("Set i_nlinks to count", 1)) {
1234 Inode[i].i_nlinks = inode_count[i];
1239 for (i = FIRSTZONE; i < ZONES; i++) {
1240 if (zone_in_use(i) == zone_count[i])
1242 if (!zone_count[i]) {
1245 printf("Zone %d: marked in use, no file uses it.", i);
1246 if (ask("Unmark", 1))
1250 printf("Zone %d: %sin use, counted=%d\n",
1251 i, zone_in_use(i) ? "" : "not ", zone_count[i]);
1256 static void check_counts2(void)
1260 for (i = 1; i <= INODES; i++) {
1261 if (!inode_in_use(i) && Inode2[i].i_mode && warn_mode) {
1262 printf("Inode %d mode not cleared.", i);
1263 if (ask("Clear", 1)) {
1264 Inode2[i].i_mode = 0;
1268 if (!inode_count[i]) {
1269 if (!inode_in_use(i))
1271 printf("Inode %d not used, marked used in the bitmap.", i);
1272 if (ask("Clear", 1))
1276 if (!inode_in_use(i)) {
1277 printf("Inode %d used, marked unused in the bitmap.", i);
1281 if (Inode2[i].i_nlinks != inode_count[i]) {
1282 printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
1283 i, Inode2[i].i_mode, Inode2[i].i_nlinks,
1285 if (ask("Set i_nlinks to count", 1)) {
1286 Inode2[i].i_nlinks = inode_count[i];
1291 for (i = FIRSTZONE; i < ZONES; i++) {
1292 if (zone_in_use(i) == zone_count[i])
1294 if (!zone_count[i]) {
1297 printf("Zone %d: marked in use, no file uses it.", i);
1298 if (ask("Unmark", 1))
1302 printf("Zone %d: %sin use, counted=%d\n",
1303 i, zone_in_use(i) ? "" : "not ", zone_count[i]);
1308 static void check(void)
1310 memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
1311 memset(zone_count, 0, ZONES * sizeof(*zone_count));
1312 check_zones(ROOT_INO);
1313 recursive_check(ROOT_INO);
1318 static void check2(void)
1320 memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
1321 memset(zone_count, 0, ZONES * sizeof(*zone_count));
1322 check_zones2(ROOT_INO);
1323 recursive_check2(ROOT_INO);
1328 /* Wed Feb 9 15:17:06 MST 2000 */
1329 /* dynamically allocate name_list (instead of making it static) */
1330 static void alloc_name_list(void)
1334 name_list = xmalloc(sizeof(char *) * MAX_DEPTH);
1335 for (i = 0; i < MAX_DEPTH; i++)
1336 name_list[i] = xmalloc(sizeof(char) * BUFSIZ + 1);
1340 /* execute this atexit() to deallocate name_list[] */
1341 /* piptigger was here */
1342 static void free_name_list(void)
1347 for (i = 0; i < MAX_DEPTH; i++) {
1357 extern int fsck_minix_main(int argc, char **argv)
1364 /* Don't bother to free memory. Exit does
1365 * that automagically, so we can save a few bytes */
1366 //atexit(free_name_list);
1368 if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
1369 die("bad inode size");
1371 if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
1372 die("bad v2 inode size");
1374 while (argc-- > 1) {
1376 if (argv[0][0] != '-') {
1380 device_name = argv[0];
1383 switch (argv[0][0]) {
1413 check_mount(); /* trying to check a mounted filesystem? */
1414 if (repair && !automatic) {
1415 if (!isatty(0) || !isatty(1))
1416 die("need terminal for interactive repairs");
1418 IN = open(device_name, repair ? O_RDWR : O_RDONLY);
1420 die("unable to open '%s'");
1421 for (count = 0; count < 3; count++)
1426 * Determine whether or not we should continue with the checking.
1427 * This is based on the status of the filesystem valid and error
1428 * flags and whether or not the -f switch was specified on the
1431 printf("%s, %s\n", applet_name, program_version);
1432 if (!(Super.s_state & MINIX_ERROR_FS) &&
1433 (Super.s_state & MINIX_VALID_FS) && !force) {
1435 printf("%s is clean, no check.\n", device_name);
1438 printf("Forcing filesystem check on %s.\n", device_name);
1440 printf("Filesystem on %s is dirty, needs checking.\n",
1445 if (repair && !automatic) {
1446 tcgetattr(0, &termios);
1448 tmp.c_lflag &= ~(ICANON | ECHO);
1449 tcsetattr(0, TCSANOW, &tmp);
1465 for (i = 1, free = 0; i <= INODES; i++)
1466 if (!inode_in_use(i))
1468 printf("\n%6ld inodes used (%ld%%)\n", (INODES - free),
1469 100 * (INODES - free) / INODES);
1470 for (i = FIRSTZONE, free = 0; i < ZONES; i++)
1471 if (!zone_in_use(i))
1473 printf("%6ld zones used (%ld%%)\n", (ZONES - free),
1474 100 * (ZONES - free) / ZONES);
1475 printf("\n%6d regular files\n"
1477 "%6d character device files\n"
1478 "%6d block device files\n"
1480 "%6d symbolic links\n"
1483 regular, directory, chardev, blockdev,
1484 links - 2 * directory + 1, symlinks,
1485 total - 2 * directory + 1);
1489 printf("----------------------------\n"
1490 "FILE SYSTEM HAS BEEN CHANGED\n"
1491 "----------------------------\n");
1492 for (count = 0; count < 3; count++)
1495 write_super_block();
1497 if (repair && !automatic)
1498 tcsetattr(0, TCSANOW, &termios);
1502 if (errors_uncorrected)