More stuff

1 files changed, 1377 insertions, 0 deletions

diff --git a/fsck_minix.c b/fsck_minix.c
new file mode 100644
index 0000000..e4b14d7
--- /dev/null
+++ b/fsck_minix.c
@@ -0,0 +1,1377 @@
+/*
+ * 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/stat.h>
+
+#include <linux/fs.h>
+#include <linux/minix_fs.h>
+#include "../version.h"
+#include "nls.h"
+
+#ifdef MINIX2_SUPER_MAGIC2
+#define HAVE_MINIX2 1
+#endif
+
+#ifndef __linux__
+#define volatile
+#endif
+
+#define ROOT_INO 1
+
+#define UPPER(size,n) ((size+((n)-1))/(n))
+#define INODE_SIZE (sizeof(struct minix_inode))
+#ifdef HAVE_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_name = "fsck.minix";
+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 */
+#define MAX_DEPTH 50
+static int name_depth = 0;
+static char name_list[MAX_DEPTH][NAME_MAX+1];
+
+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 HAVE_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;
+
+void recursive_check(unsigned int ino);
+void recursive_check2(unsigned int ino);
+
+#include "bitops.h"
+
+#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)
+
+void leave(int) __attribute__ ((noreturn));
+void leave(int status)
+{
+	if (termios_set)
+		tcsetattr(0, TCSANOW, &termios);
+	exit(status);
+}
+
+void usage(void) {
+	fprintf(stderr,
+		_("Usage: %s [-larvsmf] /dev/name\n"),
+		program_name);
+	leave(16);
+}
+
+void die(const char *str) {
+	fprintf(stderr, "%s: %s\n", program_name, str);
+	leave(8);
+}
+
+/*
+ * This simply goes through the file-name data and prints out the
+ * current file.
+ */
+void print_current_name(void)
+{
+	int i=0;
+
+	while (i<name_depth)
+		printf("/%.*s",namelen,name_list[i++]);
+	if (i == 0)
+		printf ("/");
+}
+
+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).
+ */
+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 HAVE_MINIX2
+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.
+ */
+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.
+ */
+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.
+ */
+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 HAVE_MINIX2
+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
+
+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;
+}
+
+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"));
+}
+
+void get_dirsize (void)
+{
+	int block;
+	char blk[BLOCK_SIZE];
+	int size;
+
+#if HAVE_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 */
+}
+
+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 HAVE_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"));
+}
+
+void read_tables(void)
+{
+	inode_map = malloc(IMAPS * BLOCK_SIZE);
+	if (!inode_map)
+		die(_("Unable to allocate buffer for inode map"));
+	zone_map = malloc(ZMAPS * BLOCK_SIZE);
+	if (!inode_map)
+		die("Unable to allocate buffer for zone map");
+	memset(inode_map,0,sizeof(inode_map));
+	memset(zone_map,0,sizeof(zone_map));
+	inode_buffer = malloc(INODE_BUFFER_SIZE);
+	if (!inode_buffer)
+		die(_("Unable to allocate buffer for inodes"));
+	inode_count = malloc(INODES + 1);
+	if (!inode_count)
+		die(_("Unable to allocate buffer for inode count"));
+	zone_count = malloc(ZONES);
+	if (!zone_count)
+		die(_("Unable to allocate buffer for zone count"));
+	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);
+	}
+}
+
+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 HAVE_MINIX2
+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
+
+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 HAVE_MINIX2
+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 HAVE_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 HAVE_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 HAVE_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
+
+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 HAVE_MINIX2
+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
+
+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 HAVE_MINIX2
+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
+
+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 HAVE_MINIX2
+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
+
+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));
+}
+
+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 HAVE_MINIX2
+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
+
+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 HAVE_MINIX2
+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
+
+extern int 
+fsck_minix_main(int argc, char ** argv)
+{
+	struct termios tmp;
+	int count;
+	int retcode = 0;
+
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+	
+
+	if (argc && *argv)
+		program_name = *argv;
+	if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
+		die(_("bad inode size"));
+#ifdef HAVE_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)
+				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: usage();
+			}
+	}
+	if (!device_name)
+		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)
+		die(_("unable to open '%s'"));
+	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 / %s\n", program_name, program_version,
+	       util_linux_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;
+	}
+
+#if HAVE_MINIX2
+	if (version2) {
+		check_root2 ();
+		check2 ();
+	} else 
+#endif
+	  {
+		check_root();
+		check();
+	}
+	if (verbose) {
+		int i, free;
+
+		for (i=1,free=0 ; i <= INODES ; i++)
+			if (!inode_in_use(i))
+				free++;
+		printf(_("\n%6ld inodes used (%ld%%)\n"),(INODES-free),
+			100*(INODES-free)/INODES);
+		for (i=FIRSTZONE,free=0 ; i < ZONES ; i++)
+			if (!zone_in_use(i))
+				free++;
+		printf(_("%6ld zones used (%ld%%)\n"),(ZONES-free),
+			100*(ZONES-free)/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;
+}