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-rw-r--r--release/src/router/busybox/fsck_minix.c1484
1 files changed, 0 insertions, 1484 deletions
diff --git a/release/src/router/busybox/fsck_minix.c b/release/src/router/busybox/fsck_minix.c
deleted file mode 100644
index a2421fc3..00000000
--- a/release/src/router/busybox/fsck_minix.c
+++ /dev/null
@@ -1,1484 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * fsck.c - a file system consistency checker for Linux.
- *
- * (C) 1991, 1992 Linus Torvalds. This file may be redistributed
- * as per the GNU copyleft.
- */
-
-/*
- * 09.11.91 - made the first rudimetary functions
- *
- * 10.11.91 - updated, does checking, no repairs yet.
- * Sent out to the mailing-list for testing.
- *
- * 14.11.91 - Testing seems to have gone well. Added some
- * correction-code, and changed some functions.
- *
- * 15.11.91 - More correction code. Hopefully it notices most
- * cases now, and tries to do something about them.
- *
- * 16.11.91 - More corrections (thanks to Mika Jalava). Most
- * things seem to work now. Yeah, sure.
- *
- *
- * 19.04.92 - Had to start over again from this old version, as a
- * kernel bug ate my enhanced fsck in february.
- *
- * 28.02.93 - added support for different directory entry sizes..
- *
- * Sat Mar 6 18:59:42 1993, faith@cs.unc.edu: Output namelen with
- * super-block information
- *
- * Sat Oct 9 11:17:11 1993, faith@cs.unc.edu: make exit status conform
- * to that required by fsutil
- *
- * Mon Jan 3 11:06:52 1994 - Dr. Wettstein (greg%wind.uucp@plains.nodak.edu)
- * Added support for file system valid flag. Also
- * added program_version variable and output of
- * program name and version number when program
- * is executed.
- *
- * 30.10.94 - added support for v2 filesystem
- * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
- *
- * 10.12.94 - added test to prevent checking of mounted fs adapted
- * from Theodore Ts'o's (tytso@athena.mit.edu) e2fsck
- * program. (Daniel Quinlan, quinlan@yggdrasil.com)
- *
- * 01.07.96 - Fixed the v2 fs stuff to use the right #defines and such
- * for modern libcs (janl@math.uio.no, Nicolai Langfeldt)
- *
- * 02.07.96 - Added C bit fiddling routines from rmk@ecs.soton.ac.uk
- * (Russell King). He made them for ARM. It would seem
- * that the ARM is powerful enough to do this in C whereas
- * i386 and m64k must use assembly to get it fast >:-)
- * This should make minix fsck systemindependent.
- * (janl@math.uio.no, Nicolai Langfeldt)
- *
- * 04.11.96 - Added minor fixes from Andreas Schwab to avoid compiler
- * warnings. Added mc68k bitops from
- * Joerg Dorchain <dorchain@mpi-sb.mpg.de>.
- *
- * 06.11.96 - Added v2 code submitted by Joerg Dorchain, but written by
- * Andreas Schwab.
- *
- * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
- * - added Native Language Support
- *
- *
- * I've had no time to add comments - hopefully the function names
- * are comments enough. As with all file system checkers, this assumes
- * the file system is quiescent - don't use it on a mounted device
- * unless you can be sure nobody is writing to it (and remember that the
- * kernel can write to it when it searches for files).
- *
- * Usuage: fsck [-larvsm] device
- * -l for a listing of all the filenames
- * -a for automatic repairs (not implemented)
- * -r for repairs (interactive) (not implemented)
- * -v for verbose (tells how many files)
- * -s for super-block info
- * -m for minix-like "mode not cleared" warnings
- * -f force filesystem check even if filesystem marked as valid
- *
- * The device may be a block device or a image of one, but this isn't
- * enforced (but it's not much fun on a character device :-).
- */
-
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include <string.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <termios.h>
-#include <mntent.h>
-#include <sys/param.h>
-#include "busybox.h"
-
-
- typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-
-
-static const int MINIX_ROOT_INO = 1;
-static const int MINIX_LINK_MAX = 250;
-static const int MINIX2_LINK_MAX = 65530;
-
-static const int MINIX_I_MAP_SLOTS = 8;
-static const int MINIX_Z_MAP_SLOTS = 64;
-static const int MINIX_SUPER_MAGIC = 0x137F; /* original minix fs */
-static const int MINIX_SUPER_MAGIC2 = 0x138F; /* minix fs, 30 char names */
-static const int MINIX2_SUPER_MAGIC = 0x2468; /* minix V2 fs */
-static const int MINIX2_SUPER_MAGIC2 = 0x2478; /* minix V2 fs, 30 char names */
-static const int MINIX_VALID_FS = 0x0001; /* Clean fs. */
-static const int MINIX_ERROR_FS = 0x0002; /* fs has errors. */
-
-#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
-#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode)))
-
-static const int MINIX_V1 = 0x0001; /* original minix fs */
-static const int MINIX_V2 = 0x0002; /* minix V2 fs */
-
-#define INODE_VERSION(inode) inode->i_sb->u.minix_sb.s_version
-
-/*
- * This is the original minix inode layout on disk.
- * Note the 8-bit gid and atime and ctime.
- */
-struct minix_inode {
- u16 i_mode;
- u16 i_uid;
- u32 i_size;
- u32 i_time;
- u8 i_gid;
- u8 i_nlinks;
- u16 i_zone[9];
-};
-
-/*
- * The new minix inode has all the time entries, as well as
- * long block numbers and a third indirect block (7+1+1+1
- * instead of 7+1+1). Also, some previously 8-bit values are
- * now 16-bit. The inode is now 64 bytes instead of 32.
- */
-struct minix2_inode {
- u16 i_mode;
- u16 i_nlinks;
- u16 i_uid;
- u16 i_gid;
- u32 i_size;
- u32 i_atime;
- u32 i_mtime;
- u32 i_ctime;
- u32 i_zone[10];
-};
-
-/*
- * minix super-block data on disk
- */
-struct minix_super_block {
- u16 s_ninodes;
- u16 s_nzones;
- u16 s_imap_blocks;
- u16 s_zmap_blocks;
- u16 s_firstdatazone;
- u16 s_log_zone_size;
- u32 s_max_size;
- u16 s_magic;
- u16 s_state;
- u32 s_zones;
-};
-
-struct minix_dir_entry {
- u16 inode;
- char name[0];
-};
-
-#define BLOCK_SIZE_BITS 10
-#define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
-
-#define NAME_MAX 255 /* # chars in a file name */
-
-#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
-
-#ifndef BLKGETSIZE
-#define BLKGETSIZE _IO(0x12,96) /* return device size */
-#endif
-
-#ifndef __linux__
-#define volatile
-#endif
-
-static const int ROOT_INO = 1;
-
-#define UPPER(size,n) ((size+((n)-1))/(n))
-#define INODE_SIZE (sizeof(struct minix_inode))
-#ifdef BB_FEATURE_MINIX2
-#define INODE_SIZE2 (sizeof(struct minix2_inode))
-#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
- : MINIX_INODES_PER_BLOCK))
-#else
-#define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
-#endif
-#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
-
-#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
-
-static char *program_version = "1.2 - 11/11/96";
-static char *device_name = NULL;
-static int IN;
-static int repair = 0, automatic = 0, verbose = 0, list = 0, show =
- 0, warn_mode = 0, force = 0;
-static int directory = 0, regular = 0, blockdev = 0, chardev = 0, links =
- 0, symlinks = 0, total = 0;
-
-static int changed = 0; /* flags if the filesystem has been changed */
-static int errors_uncorrected = 0; /* flag if some error was not corrected */
-static int dirsize = 16;
-static int namelen = 14;
-static int version2 = 0;
-static struct termios termios;
-static int termios_set = 0;
-
-/* File-name data */
-static const int MAX_DEPTH = 32;
-static int name_depth = 0;
-// static char name_list[MAX_DEPTH][BUFSIZ + 1];
-static char **name_list = NULL;
-
-static char *inode_buffer = NULL;
-
-#define Inode (((struct minix_inode *) inode_buffer)-1)
-#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
-static char super_block_buffer[BLOCK_SIZE];
-
-#define Super (*(struct minix_super_block *)super_block_buffer)
-#define INODES ((unsigned long)Super.s_ninodes)
-#ifdef BB_FEATURE_MINIX2
-#define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
-#else
-#define ZONES ((unsigned long)(Super.s_nzones))
-#endif
-#define IMAPS ((unsigned long)Super.s_imap_blocks)
-#define ZMAPS ((unsigned long)Super.s_zmap_blocks)
-#define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
-#define ZONESIZE ((unsigned long)Super.s_log_zone_size)
-#define MAXSIZE ((unsigned long)Super.s_max_size)
-#define MAGIC (Super.s_magic)
-#define NORM_FIRSTZONE (2+IMAPS+ZMAPS+INODE_BLOCKS)
-
-static char *inode_map;
-static char *zone_map;
-
-static unsigned char *inode_count = NULL;
-static unsigned char *zone_count = NULL;
-
-static void recursive_check(unsigned int ino);
-#ifdef BB_FEATURE_MINIX2
-static void recursive_check2(unsigned int ino);
-#endif
-
-static inline int bit(char * a,unsigned int i)
-{
- return (a[i >> 3] & (1<<(i & 7))) != 0;
-}
-#define inode_in_use(x) (bit(inode_map,(x)))
-#define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1))
-
-#define mark_inode(x) (setbit(inode_map,(x)),changed=1)
-#define unmark_inode(x) (clrbit(inode_map,(x)),changed=1)
-
-#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1),changed=1)
-#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1),changed=1)
-
-static void leave(int) __attribute__ ((noreturn));
-static void leave(int status)
-{
- if (termios_set)
- tcsetattr(0, TCSANOW, &termios);
- exit(status);
-}
-
-static void die(const char *str)
-{
- error_msg("%s", str);
- leave(8);
-}
-
-/*
- * This simply goes through the file-name data and prints out the
- * current file.
- */
-static void print_current_name(void)
-{
- int i = 0;
-
- while (i < name_depth)
- printf("/%.*s", namelen, name_list[i++]);
- if (i == 0)
- printf("/");
-}
-
-static int ask(const char *string, int def)
-{
- int c;
-
- if (!repair) {
- printf("\n");
- errors_uncorrected = 1;
- return 0;
- }
- if (automatic) {
- printf("\n");
- if (!def)
- errors_uncorrected = 1;
- return def;
- }
- printf(def ? "%s (y/n)? " : "%s (n/y)? ", string);
- for (;;) {
- fflush(stdout);
- if ((c = getchar()) == EOF) {
- if (!def)
- errors_uncorrected = 1;
- return def;
- }
- c = toupper(c);
- if (c == 'Y') {
- def = 1;
- break;
- } else if (c == 'N') {
- def = 0;
- break;
- } else if (c == ' ' || c == '\n')
- break;
- }
- if (def)
- printf("y\n");
- else {
- printf("n\n");
- errors_uncorrected = 1;
- }
- return def;
-}
-
-/*
- * Make certain that we aren't checking a filesystem that is on a
- * mounted partition. Code adapted from e2fsck, Copyright (C) 1993,
- * 1994 Theodore Ts'o. Also licensed under GPL.
- */
-static void check_mount(void)
-{
- FILE *f;
- struct mntent *mnt;
- int cont;
- int fd;
-
- if ((f = setmntent(MOUNTED, "r")) == NULL)
- return;
- while ((mnt = getmntent(f)) != NULL)
- if (strcmp(device_name, mnt->mnt_fsname) == 0)
- break;
- endmntent(f);
- if (!mnt)
- return;
-
- /*
- * If the root is mounted read-only, then /etc/mtab is
- * probably not correct; so we won't issue a warning based on
- * it.
- */
- fd = open(MOUNTED, O_RDWR);
- if (fd < 0 && errno == EROFS)
- return;
- else
- close(fd);
-
- printf("%s is mounted. ", device_name);
- if (isatty(0) && isatty(1))
- cont = ask("Do you really want to continue", 0);
- else
- cont = 0;
- if (!cont) {
- printf("check aborted.\n");
- exit(0);
- }
- return;
-}
-
-/*
- * check_zone_nr checks to see that *nr is a valid zone nr. If it
- * isn't, it will possibly be repaired. Check_zone_nr sets *corrected
- * if an error was corrected, and returns the zone (0 for no zone
- * or a bad zone-number).
- */
-static int check_zone_nr(unsigned short *nr, int *corrected)
-{
- if (!*nr)
- return 0;
- if (*nr < FIRSTZONE)
- printf("Zone nr < FIRSTZONE in file `");
- else if (*nr >= ZONES)
- printf("Zone nr >= ZONES in file `");
- else
- return *nr;
- print_current_name();
- printf("'.");
- if (ask("Remove block", 1)) {
- *nr = 0;
- *corrected = 1;
- }
- return 0;
-}
-
-#ifdef BB_FEATURE_MINIX2
-static int check_zone_nr2(unsigned int *nr, int *corrected)
-{
- if (!*nr)
- return 0;
- if (*nr < FIRSTZONE)
- printf("Zone nr < FIRSTZONE in file `");
- else if (*nr >= ZONES)
- printf("Zone nr >= ZONES in file `");
- else
- return *nr;
- print_current_name();
- printf("'.");
- if (ask("Remove block", 1)) {
- *nr = 0;
- *corrected = 1;
- }
- return 0;
-}
-#endif
-
-/*
- * read-block reads block nr into the buffer at addr.
- */
-static void read_block(unsigned int nr, char *addr)
-{
- if (!nr) {
- memset(addr, 0, BLOCK_SIZE);
- return;
- }
- if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) {
- printf("Read error: unable to seek to block in file '");
- print_current_name();
- printf("'\n");
- memset(addr, 0, BLOCK_SIZE);
- errors_uncorrected = 1;
- } else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) {
- printf("Read error: bad block in file '");
- print_current_name();
- printf("'\n");
- memset(addr, 0, BLOCK_SIZE);
- errors_uncorrected = 1;
- }
-}
-
-/*
- * write_block writes block nr to disk.
- */
-static void write_block(unsigned int nr, char *addr)
-{
- if (!nr)
- return;
- if (nr < FIRSTZONE || nr >= ZONES) {
- printf("Internal error: trying to write bad block\n"
- "Write request ignored\n");
- errors_uncorrected = 1;
- return;
- }
- if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET))
- die("seek failed in write_block");
- if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) {
- printf("Write error: bad block in file '");
- print_current_name();
- printf("'\n");
- errors_uncorrected = 1;
- }
-}
-
-/*
- * map-block calculates the absolute block nr of a block in a file.
- * It sets 'changed' if the inode has needed changing, and re-writes
- * any indirect blocks with errors.
- */
-static int map_block(struct minix_inode *inode, unsigned int blknr)
-{
- unsigned short ind[BLOCK_SIZE >> 1];
- unsigned short dind[BLOCK_SIZE >> 1];
- int blk_chg, block, result;
-
- if (blknr < 7)
- return check_zone_nr(inode->i_zone + blknr, &changed);
- blknr -= 7;
- if (blknr < 512) {
- block = check_zone_nr(inode->i_zone + 7, &changed);
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr(blknr + ind, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
- }
- blknr -= 512;
- block = check_zone_nr(inode->i_zone + 8, &changed);
- read_block(block, (char *) dind);
- blk_chg = 0;
- result = check_zone_nr(dind + (blknr / 512), &blk_chg);
- if (blk_chg)
- write_block(block, (char *) dind);
- block = result;
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr(ind + (blknr % 512), &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
-}
-
-#ifdef BB_FEATURE_MINIX2
-static int map_block2(struct minix2_inode *inode, unsigned int blknr)
-{
- unsigned int ind[BLOCK_SIZE >> 2];
- unsigned int dind[BLOCK_SIZE >> 2];
- unsigned int tind[BLOCK_SIZE >> 2];
- int blk_chg, block, result;
-
- if (blknr < 7)
- return check_zone_nr2(inode->i_zone + blknr, &changed);
- blknr -= 7;
- if (blknr < 256) {
- block = check_zone_nr2(inode->i_zone + 7, &changed);
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr2(blknr + ind, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
- }
- blknr -= 256;
- if (blknr >= 256 * 256) {
- block = check_zone_nr2(inode->i_zone + 8, &changed);
- read_block(block, (char *) dind);
- blk_chg = 0;
- result = check_zone_nr2(dind + blknr / 256, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) dind);
- block = result;
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr2(ind + blknr % 256, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
- }
- blknr -= 256 * 256;
- block = check_zone_nr2(inode->i_zone + 9, &changed);
- read_block(block, (char *) tind);
- blk_chg = 0;
- result = check_zone_nr2(tind + blknr / (256 * 256), &blk_chg);
- if (blk_chg)
- write_block(block, (char *) tind);
- block = result;
- read_block(block, (char *) dind);
- blk_chg = 0;
- result = check_zone_nr2(dind + (blknr / 256) % 256, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) dind);
- block = result;
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr2(ind + blknr % 256, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
-}
-#endif
-
-static void write_super_block(void)
-{
- /*
- * Set the state of the filesystem based on whether or not there
- * are uncorrected errors. The filesystem valid flag is
- * unconditionally set if we get this far.
- */
- Super.s_state |= MINIX_VALID_FS;
- if (errors_uncorrected)
- Super.s_state |= MINIX_ERROR_FS;
- else
- Super.s_state &= ~MINIX_ERROR_FS;
-
- if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
- die("seek failed in write_super_block");
- if (BLOCK_SIZE != write(IN, super_block_buffer, BLOCK_SIZE))
- die("unable to write super-block");
-
- return;
-}
-
-static void write_tables(void)
-{
- write_super_block();
-
- if (IMAPS * BLOCK_SIZE != write(IN, inode_map, IMAPS * BLOCK_SIZE))
- die("Unable to write inode map");
- if (ZMAPS * BLOCK_SIZE != write(IN, zone_map, ZMAPS * BLOCK_SIZE))
- die("Unable to write zone map");
- if (INODE_BUFFER_SIZE != write(IN, inode_buffer, INODE_BUFFER_SIZE))
- die("Unable to write inodes");
-}
-
-static void get_dirsize(void)
-{
- int block;
- char blk[BLOCK_SIZE];
- int size;
-
-#ifdef BB_FEATURE_MINIX2
- if (version2)
- block = Inode2[ROOT_INO].i_zone[0];
- else
-#endif
- block = Inode[ROOT_INO].i_zone[0];
- read_block(block, blk);
- for (size = 16; size < BLOCK_SIZE; size <<= 1) {
- if (strcmp(blk + size + 2, "..") == 0) {
- dirsize = size;
- namelen = size - 2;
- return;
- }
- }
- /* use defaults */
-}
-
-static void read_superblock(void)
-{
- if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
- die("seek failed");
- if (BLOCK_SIZE != read(IN, super_block_buffer, BLOCK_SIZE))
- die("unable to read super block");
- if (MAGIC == MINIX_SUPER_MAGIC) {
- namelen = 14;
- dirsize = 16;
- version2 = 0;
- } else if (MAGIC == MINIX_SUPER_MAGIC2) {
- namelen = 30;
- dirsize = 32;
- version2 = 0;
-#ifdef BB_FEATURE_MINIX2
- } else if (MAGIC == MINIX2_SUPER_MAGIC) {
- namelen = 14;
- dirsize = 16;
- version2 = 1;
- } else if (MAGIC == MINIX2_SUPER_MAGIC2) {
- namelen = 30;
- dirsize = 32;
- version2 = 1;
-#endif
- } else
- die("bad magic number in super-block");
- if (ZONESIZE != 0 || BLOCK_SIZE != 1024)
- die("Only 1k blocks/zones supported");
- if (IMAPS * BLOCK_SIZE * 8 < INODES + 1)
- die("bad s_imap_blocks field in super-block");
- if (ZMAPS * BLOCK_SIZE * 8 < ZONES - FIRSTZONE + 1)
- die("bad s_zmap_blocks field in super-block");
-}
-
-static void read_tables(void)
-{
- inode_map = xmalloc(IMAPS * BLOCK_SIZE);
- zone_map = xmalloc(ZMAPS * BLOCK_SIZE);
- memset(inode_map, 0, sizeof(inode_map));
- memset(zone_map, 0, sizeof(zone_map));
- inode_buffer = xmalloc(INODE_BUFFER_SIZE);
- inode_count = xmalloc(INODES + 1);
- zone_count = xmalloc(ZONES);
- if (IMAPS * BLOCK_SIZE != read(IN, inode_map, IMAPS * BLOCK_SIZE))
- die("Unable to read inode map");
- if (ZMAPS * BLOCK_SIZE != read(IN, zone_map, ZMAPS * BLOCK_SIZE))
- die("Unable to read zone map");
- if (INODE_BUFFER_SIZE != read(IN, inode_buffer, INODE_BUFFER_SIZE))
- die("Unable to read inodes");
- if (NORM_FIRSTZONE != FIRSTZONE) {
- printf("Warning: Firstzone != Norm_firstzone\n");
- errors_uncorrected = 1;
- }
- get_dirsize();
- if (show) {
- printf("%ld inodes\n", INODES);
- printf("%ld blocks\n", ZONES);
- printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE);
- printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE);
- printf("Maxsize=%ld\n", MAXSIZE);
- printf("Filesystem state=%d\n", Super.s_state);
- printf("namelen=%d\n\n", namelen);
- }
-}
-
-static struct minix_inode *get_inode(unsigned int nr)
-{
- struct minix_inode *inode;
-
- if (!nr || nr > INODES)
- return NULL;
- total++;
- inode = Inode + nr;
- if (!inode_count[nr]) {
- if (!inode_in_use(nr)) {
- printf("Inode %d marked not used, but used for file '", nr);
- print_current_name();
- printf("'\n");
- if (repair) {
- if (ask("Mark in use", 1))
- mark_inode(nr);
- } else {
- errors_uncorrected = 1;
- }
- }
- if (S_ISDIR(inode->i_mode))
- directory++;
- else if (S_ISREG(inode->i_mode))
- regular++;
- else if (S_ISCHR(inode->i_mode))
- chardev++;
- else if (S_ISBLK(inode->i_mode))
- blockdev++;
- else if (S_ISLNK(inode->i_mode))
- symlinks++;
- else if (S_ISSOCK(inode->i_mode));
- else if (S_ISFIFO(inode->i_mode));
- else {
- print_current_name();
- printf(" has mode %05o\n", inode->i_mode);
- }
-
- } else
- links++;
- if (!++inode_count[nr]) {
- printf("Warning: inode count too big.\n");
- inode_count[nr]--;
- errors_uncorrected = 1;
- }
- return inode;
-}
-
-#ifdef BB_FEATURE_MINIX2
-static struct minix2_inode *get_inode2(unsigned int nr)
-{
- struct minix2_inode *inode;
-
- if (!nr || nr > INODES)
- return NULL;
- total++;
- inode = Inode2 + nr;
- if (!inode_count[nr]) {
- if (!inode_in_use(nr)) {
- printf("Inode %d marked not used, but used for file '", nr);
- print_current_name();
- printf("'\n");
- if (repair) {
- if (ask("Mark in use", 1))
- mark_inode(nr);
- else
- errors_uncorrected = 1;
- }
- }
- if (S_ISDIR(inode->i_mode))
- directory++;
- else if (S_ISREG(inode->i_mode))
- regular++;
- else if (S_ISCHR(inode->i_mode))
- chardev++;
- else if (S_ISBLK(inode->i_mode))
- blockdev++;
- else if (S_ISLNK(inode->i_mode))
- symlinks++;
- else if (S_ISSOCK(inode->i_mode));
- else if (S_ISFIFO(inode->i_mode));
- else {
- print_current_name();
- printf(" has mode %05o\n", inode->i_mode);
- }
- } else
- links++;
- if (!++inode_count[nr]) {
- printf("Warning: inode count too big.\n");
- inode_count[nr]--;
- errors_uncorrected = 1;
- }
- return inode;
-}
-#endif
-
-static void check_root(void)
-{
- struct minix_inode *inode = Inode + ROOT_INO;
-
- if (!inode || !S_ISDIR(inode->i_mode))
- die("root inode isn't a directory");
-}
-
-#ifdef BB_FEATURE_MINIX2
-static void check_root2(void)
-{
- struct minix2_inode *inode = Inode2 + ROOT_INO;
-
- if (!inode || !S_ISDIR(inode->i_mode))
- die("root inode isn't a directory");
-}
-#endif
-
-static int add_zone(unsigned short *znr, int *corrected)
-{
- int result;
- int block;
-
- result = 0;
- block = check_zone_nr(znr, corrected);
- if (!block)
- return 0;
- if (zone_count[block]) {
- printf("Block has been used before. Now in file `");
- print_current_name();
- printf("'.");
- if (ask("Clear", 1)) {
- *znr = 0;
- block = 0;
- *corrected = 1;
- }
- }
- if (!block)
- return 0;
- if (!zone_in_use(block)) {
- printf("Block %d in file `", block);
- print_current_name();
- printf("' is marked not in use.");
- if (ask("Correct", 1))
- mark_zone(block);
- }
- if (!++zone_count[block])
- zone_count[block]--;
- return block;
-}
-
-#ifdef BB_FEATURE_MINIX2
-static int add_zone2(unsigned int *znr, int *corrected)
-{
- int result;
- int block;
-
- result = 0;
- block = check_zone_nr2(znr, corrected);
- if (!block)
- return 0;
- if (zone_count[block]) {
- printf("Block has been used before. Now in file `");
- print_current_name();
- printf("'.");
- if (ask("Clear", 1)) {
- *znr = 0;
- block = 0;
- *corrected = 1;
- }
- }
- if (!block)
- return 0;
- if (!zone_in_use(block)) {
- printf("Block %d in file `", block);
- print_current_name();
- printf("' is marked not in use.");
- if (ask("Correct", 1))
- mark_zone(block);
- }
- if (!++zone_count[block])
- zone_count[block]--;
- return block;
-}
-#endif
-
-static void add_zone_ind(unsigned short *znr, int *corrected)
-{
- static char blk[BLOCK_SIZE];
- int i, chg_blk = 0;
- int block;
-
- block = add_zone(znr, corrected);
- if (!block)
- return;
- read_block(block, blk);
- for (i = 0; i < (BLOCK_SIZE >> 1); i++)
- add_zone(i + (unsigned short *) blk, &chg_blk);
- if (chg_blk)
- write_block(block, blk);
-}
-
-#ifdef BB_FEATURE_MINIX2
-static void add_zone_ind2(unsigned int *znr, int *corrected)
-{
- static char blk[BLOCK_SIZE];
- int i, chg_blk = 0;
- int block;
-
- block = add_zone2(znr, corrected);
- if (!block)
- return;
- read_block(block, blk);
- for (i = 0; i < BLOCK_SIZE >> 2; i++)
- add_zone2(i + (unsigned int *) blk, &chg_blk);
- if (chg_blk)
- write_block(block, blk);
-}
-#endif
-
-static void add_zone_dind(unsigned short *znr, int *corrected)
-{
- static char blk[BLOCK_SIZE];
- int i, blk_chg = 0;
- int block;
-
- block = add_zone(znr, corrected);
- if (!block)
- return;
- read_block(block, blk);
- for (i = 0; i < (BLOCK_SIZE >> 1); i++)
- add_zone_ind(i + (unsigned short *) blk, &blk_chg);
- if (blk_chg)
- write_block(block, blk);
-}
-
-#ifdef BB_FEATURE_MINIX2
-static void add_zone_dind2(unsigned int *znr, int *corrected)
-{
- static char blk[BLOCK_SIZE];
- int i, blk_chg = 0;
- int block;
-
- block = add_zone2(znr, corrected);
- if (!block)
- return;
- read_block(block, blk);
- for (i = 0; i < BLOCK_SIZE >> 2; i++)
- add_zone_ind2(i + (unsigned int *) blk, &blk_chg);
- if (blk_chg)
- write_block(block, blk);
-}
-
-static void add_zone_tind2(unsigned int *znr, int *corrected)
-{
- static char blk[BLOCK_SIZE];
- int i, blk_chg = 0;
- int block;
-
- block = add_zone2(znr, corrected);
- if (!block)
- return;
- read_block(block, blk);
- for (i = 0; i < BLOCK_SIZE >> 2; i++)
- add_zone_dind2(i + (unsigned int *) blk, &blk_chg);
- if (blk_chg)
- write_block(block, blk);
-}
-#endif
-
-static void check_zones(unsigned int i)
-{
- struct minix_inode *inode;
-
- if (!i || i > INODES)
- return;
- if (inode_count[i] > 1) /* have we counted this file already? */
- return;
- inode = Inode + i;
- if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
- !S_ISLNK(inode->i_mode)) return;
- for (i = 0; i < 7; i++)
- add_zone(i + inode->i_zone, &changed);
- add_zone_ind(7 + inode->i_zone, &changed);
- add_zone_dind(8 + inode->i_zone, &changed);
-}
-
-#ifdef BB_FEATURE_MINIX2
-static void check_zones2(unsigned int i)
-{
- struct minix2_inode *inode;
-
- if (!i || i > INODES)
- return;
- if (inode_count[i] > 1) /* have we counted this file already? */
- return;
- inode = Inode2 + i;
- if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)
- && !S_ISLNK(inode->i_mode))
- return;
- for (i = 0; i < 7; i++)
- add_zone2(i + inode->i_zone, &changed);
- add_zone_ind2(7 + inode->i_zone, &changed);
- add_zone_dind2(8 + inode->i_zone, &changed);
- add_zone_tind2(9 + inode->i_zone, &changed);
-}
-#endif
-
-static void check_file(struct minix_inode *dir, unsigned int offset)
-{
- static char blk[BLOCK_SIZE];
- struct minix_inode *inode;
- int ino;
- char *name;
- int block;
-
- block = map_block(dir, offset / BLOCK_SIZE);
- read_block(block, blk);
- name = blk + (offset % BLOCK_SIZE) + 2;
- ino = *(unsigned short *) (name - 2);
- if (ino > INODES) {
- print_current_name();
- printf(" contains a bad inode number for file '");
- printf("%.*s'.", namelen, name);
- if (ask(" Remove", 1)) {
- *(unsigned short *) (name - 2) = 0;
- write_block(block, blk);
- }
- ino = 0;
- }
- if (name_depth < MAX_DEPTH)
- strncpy(name_list[name_depth], name, namelen);
- name_depth++;
- inode = get_inode(ino);
- name_depth--;
- if (!offset) {
- if (!inode || strcmp(".", name)) {
- print_current_name();
- printf(": bad directory: '.' isn't first\n");
- errors_uncorrected = 1;
- } else
- return;
- }
- if (offset == dirsize) {
- if (!inode || strcmp("..", name)) {
- print_current_name();
- printf(": bad directory: '..' isn't second\n");
- errors_uncorrected = 1;
- } else
- return;
- }
- if (!inode)
- return;
- if (name_depth < MAX_DEPTH)
- strncpy(name_list[name_depth], name, namelen);
- name_depth++;
- if (list) {
- if (verbose)
- printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
- print_current_name();
- if (S_ISDIR(inode->i_mode))
- printf(":\n");
- else
- printf("\n");
- }
- check_zones(ino);
- if (inode && S_ISDIR(inode->i_mode))
- recursive_check(ino);
- name_depth--;
- return;
-}
-
-#ifdef BB_FEATURE_MINIX2
-static void check_file2(struct minix2_inode *dir, unsigned int offset)
-{
- static char blk[BLOCK_SIZE];
- struct minix2_inode *inode;
- int ino;
- char *name;
- int block;
-
- block = map_block2(dir, offset / BLOCK_SIZE);
- read_block(block, blk);
- name = blk + (offset % BLOCK_SIZE) + 2;
- ino = *(unsigned short *) (name - 2);
- if (ino > INODES) {
- print_current_name();
- printf(" contains a bad inode number for file '");
- printf("%.*s'.", namelen, name);
- if (ask(" Remove", 1)) {
- *(unsigned short *) (name - 2) = 0;
- write_block(block, blk);
- }
- ino = 0;
- }
- if (name_depth < MAX_DEPTH)
- strncpy(name_list[name_depth], name, namelen);
- name_depth++;
- inode = get_inode2(ino);
- name_depth--;
- if (!offset) {
- if (!inode || strcmp(".", name)) {
- print_current_name();
- printf(": bad directory: '.' isn't first\n");
- errors_uncorrected = 1;
- } else
- return;
- }
- if (offset == dirsize) {
- if (!inode || strcmp("..", name)) {
- print_current_name();
- printf(": bad directory: '..' isn't second\n");
- errors_uncorrected = 1;
- } else
- return;
- }
- if (!inode)
- return;
- name_depth++;
- if (list) {
- if (verbose)
- printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
- print_current_name();
- if (S_ISDIR(inode->i_mode))
- printf(":\n");
- else
- printf("\n");
- }
- check_zones2(ino);
- if (inode && S_ISDIR(inode->i_mode))
- recursive_check2(ino);
- name_depth--;
- return;
-}
-#endif
-
-static void recursive_check(unsigned int ino)
-{
- struct minix_inode *dir;
- unsigned int offset;
-
- dir = Inode + ino;
- if (!S_ISDIR(dir->i_mode))
- die("internal error");
- if (dir->i_size < 2 * dirsize) {
- print_current_name();
- printf(": bad directory: size<32");
- errors_uncorrected = 1;
- }
- for (offset = 0; offset < dir->i_size; offset += dirsize)
- check_file(dir, offset);
-}
-
-#ifdef BB_FEATURE_MINIX2
-static void recursive_check2(unsigned int ino)
-{
- struct minix2_inode *dir;
- unsigned int offset;
-
- dir = Inode2 + ino;
- if (!S_ISDIR(dir->i_mode))
- die("internal error");
- if (dir->i_size < 2 * dirsize) {
- print_current_name();
- printf(": bad directory: size < 32");
- errors_uncorrected = 1;
- }
- for (offset = 0; offset < dir->i_size; offset += dirsize)
- check_file2(dir, offset);
-}
-#endif
-
-static int bad_zone(int i)
-{
- char buffer[1024];
-
- if (BLOCK_SIZE * i != lseek(IN, BLOCK_SIZE * i, SEEK_SET))
- die("seek failed in bad_zone");
- return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE));
-}
-
-static void check_counts(void)
-{
- int i;
-
- for (i = 1; i <= INODES; i++) {
- if (!inode_in_use(i) && Inode[i].i_mode && warn_mode) {
- printf("Inode %d mode not cleared.", i);
- if (ask("Clear", 1)) {
- Inode[i].i_mode = 0;
- changed = 1;
- }
- }
- if (!inode_count[i]) {
- if (!inode_in_use(i))
- continue;
- printf("Inode %d not used, marked used in the bitmap.", i);
- if (ask("Clear", 1))
- unmark_inode(i);
- continue;
- }
- if (!inode_in_use(i)) {
- printf("Inode %d used, marked unused in the bitmap.", i);
- if (ask("Set", 1))
- mark_inode(i);
- }
- if (Inode[i].i_nlinks != inode_count[i]) {
- printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
- i, Inode[i].i_mode, Inode[i].i_nlinks, inode_count[i]);
- if (ask("Set i_nlinks to count", 1)) {
- Inode[i].i_nlinks = inode_count[i];
- changed = 1;
- }
- }
- }
- for (i = FIRSTZONE; i < ZONES; i++) {
- if (zone_in_use(i) == zone_count[i])
- continue;
- if (!zone_count[i]) {
- if (bad_zone(i))
- continue;
- printf("Zone %d: marked in use, no file uses it.", i);
- if (ask("Unmark", 1))
- unmark_zone(i);
- continue;
- }
- printf("Zone %d: %sin use, counted=%d\n",
- i, zone_in_use(i) ? "" : "not ", zone_count[i]);
- }
-}
-
-#ifdef BB_FEATURE_MINIX2
-static void check_counts2(void)
-{
- int i;
-
- for (i = 1; i <= INODES; i++) {
- if (!inode_in_use(i) && Inode2[i].i_mode && warn_mode) {
- printf("Inode %d mode not cleared.", i);
- if (ask("Clear", 1)) {
- Inode2[i].i_mode = 0;
- changed = 1;
- }
- }
- if (!inode_count[i]) {
- if (!inode_in_use(i))
- continue;
- printf("Inode %d not used, marked used in the bitmap.", i);
- if (ask("Clear", 1))
- unmark_inode(i);
- continue;
- }
- if (!inode_in_use(i)) {
- printf("Inode %d used, marked unused in the bitmap.", i);
- if (ask("Set", 1))
- mark_inode(i);
- }
- if (Inode2[i].i_nlinks != inode_count[i]) {
- printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
- i, Inode2[i].i_mode, Inode2[i].i_nlinks,
- inode_count[i]);
- if (ask("Set i_nlinks to count", 1)) {
- Inode2[i].i_nlinks = inode_count[i];
- changed = 1;
- }
- }
- }
- for (i = FIRSTZONE; i < ZONES; i++) {
- if (zone_in_use(i) == zone_count[i])
- continue;
- if (!zone_count[i]) {
- if (bad_zone(i))
- continue;
- printf("Zone %d: marked in use, no file uses it.", i);
- if (ask("Unmark", 1))
- unmark_zone(i);
- continue;
- }
- printf("Zone %d: %sin use, counted=%d\n",
- i, zone_in_use(i) ? "" : "not ", zone_count[i]);
- }
-}
-#endif
-
-static void check(void)
-{
- memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
- memset(zone_count, 0, ZONES * sizeof(*zone_count));
- check_zones(ROOT_INO);
- recursive_check(ROOT_INO);
- check_counts();
-}
-
-#ifdef BB_FEATURE_MINIX2
-static void check2(void)
-{
- memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
- memset(zone_count, 0, ZONES * sizeof(*zone_count));
- check_zones2(ROOT_INO);
- recursive_check2(ROOT_INO);
- check_counts2();
-}
-#endif
-
-/* Wed Feb 9 15:17:06 MST 2000 */
-/* dynamically allocate name_list (instead of making it static) */
-static void alloc_name_list(void)
-{
- int i;
-
- name_list = xmalloc(sizeof(char *) * MAX_DEPTH);
- for (i = 0; i < MAX_DEPTH; i++)
- name_list[i] = xmalloc(sizeof(char) * BUFSIZ + 1);
-}
-
-#ifdef BB_FEATURE_CLEAN_UP
-/* execute this atexit() to deallocate name_list[] */
-/* piptigger was here */
-static void free_name_list(void)
-{
- int i;
-
- if (name_list) {
- for (i = 0; i < MAX_DEPTH; i++) {
- if (name_list[i]) {
- free(name_list[i]);
- }
- }
- free(name_list);
- }
-}
-#endif
-
-extern int fsck_minix_main(int argc, char **argv)
-{
- struct termios tmp;
- int count;
- int retcode = 0;
-
- alloc_name_list();
-#ifdef BB_FEATURE_CLEAN_UP
- /* Don't bother to free memory. Exit does
- * that automagically, so we can save a few bytes */
- atexit(free_name_list);
-#endif
-
- if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad inode size");
-#ifdef BB_FEATURE_MINIX2
- if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad v2 inode size");
-#endif
- while (argc-- > 1) {
- argv++;
- if (argv[0][0] != '-') {
- if (device_name)
- show_usage();
- else
- device_name = argv[0];
- } else
- while (*++argv[0])
- switch (argv[0][0]) {
- case 'l':
- list = 1;
- break;
- case 'a':
- automatic = 1;
- repair = 1;
- break;
- case 'r':
- automatic = 0;
- repair = 1;
- break;
- case 'v':
- verbose = 1;
- break;
- case 's':
- show = 1;
- break;
- case 'm':
- warn_mode = 1;
- break;
- case 'f':
- force = 1;
- break;
- default:
- show_usage();
- }
- }
- if (!device_name)
- show_usage();
- check_mount(); /* trying to check a mounted filesystem? */
- if (repair && !automatic) {
- if (!isatty(0) || !isatty(1))
- die("need terminal for interactive repairs");
- }
- IN = open(device_name, repair ? O_RDWR : O_RDONLY);
- if (IN < 0){
- fprintf(stderr,"unable to open device '%s'.\n",device_name);
- leave(8);
- }
- for (count = 0; count < 3; count++)
- sync();
- read_superblock();
-
- /*
- * Determine whether or not we should continue with the checking.
- * This is based on the status of the filesystem valid and error
- * flags and whether or not the -f switch was specified on the
- * command line.
- */
- printf("%s, %s\n", applet_name, program_version);
- if (!(Super.s_state & MINIX_ERROR_FS) &&
- (Super.s_state & MINIX_VALID_FS) && !force) {
- if (repair)
- printf("%s is clean, no check.\n", device_name);
- return retcode;
- } else if (force)
- printf("Forcing filesystem check on %s.\n", device_name);
- else if (repair)
- printf("Filesystem on %s is dirty, needs checking.\n",
- device_name);
-
- read_tables();
-
- if (repair && !automatic) {
- tcgetattr(0, &termios);
- tmp = termios;
- tmp.c_lflag &= ~(ICANON | ECHO);
- tcsetattr(0, TCSANOW, &tmp);
- termios_set = 1;
- }
-#ifdef BB_FEATURE_MINIX2
- if (version2) {
- check_root2();
- check2();
- } else
-#endif
- {
- check_root();
- check();
- }
- if (verbose) {
- int i, free_cnt;
-
- for (i = 1, free_cnt = 0; i <= INODES; i++)
- if (!inode_in_use(i))
- free_cnt++;
- printf("\n%6ld inodes used (%ld%%)\n", (INODES - free_cnt),
- 100 * (INODES - free_cnt) / INODES);
- for (i = FIRSTZONE, free_cnt = 0; i < ZONES; i++)
- if (!zone_in_use(i))
- free_cnt++;
- printf("%6ld zones used (%ld%%)\n", (ZONES - free_cnt),
- 100 * (ZONES - free_cnt) / ZONES);
- printf("\n%6d regular files\n"
- "%6d directories\n"
- "%6d character device files\n"
- "%6d block device files\n"
- "%6d links\n"
- "%6d symbolic links\n"
- "------\n"
- "%6d files\n",
- regular, directory, chardev, blockdev,
- links - 2 * directory + 1, symlinks,
- total - 2 * directory + 1);
- }
- if (changed) {
- write_tables();
- printf("----------------------------\n"
- "FILE SYSTEM HAS BEEN CHANGED\n"
- "----------------------------\n");
- for (count = 0; count < 3; count++)
- sync();
- } else if (repair)
- write_super_block();
-
- if (repair && !automatic)
- tcsetattr(0, TCSANOW, &termios);
-
- if (changed)
- retcode += 3;
- if (errors_uncorrected)
- retcode += 4;
- return retcode;
-}