hush/util-linux/mkfs_minix.c
Eric Andersen 56f3e353da Both of these commands were subtly broken. Fortunately when used together the
damage was only ugly fscks.  Reverted to the static inline code so they work
correctly again,
 -Erik
2000-09-19 21:13:55 +00:00

877 lines
21 KiB
C

/* vi: set sw=4 ts=4: */
/*
* mkfs.c - make a linux (minix) file-system.
*
* (C) 1991 Linus Torvalds. This file may be redistributed as per
* the Linux copyright.
*/
/*
* DD.MM.YY
*
* 24.11.91 - Time began. Used the fsck sources to get started.
*
* 25.11.91 - Corrected some bugs. Added support for ".badblocks"
* The algorithm for ".badblocks" is a bit weird, but
* it should work. Oh, well.
*
* 25.01.92 - Added the -l option for getting the list of bad blocks
* out of a named file. (Dave Rivers, rivers@ponds.uucp)
*
* 28.02.92 - Added %-information when using -c.
*
* 28.02.93 - Added support for other namelengths than the original
* 14 characters so that I can test the new kernel routines..
*
* 09.10.93 - Make exit status conform to that required by fsutil
* (Rik Faith, faith@cs.unc.edu)
*
* 31.10.93 - Added inode request feature, for backup floppies: use
* 32 inodes, for a news partition use more.
* (Scott Heavner, sdh@po.cwru.edu)
*
* 03.01.94 - Added support for file system valid flag.
* (Dr. Wettstein, greg%wind.uucp@plains.nodak.edu)
*
* 30.10.94 - added support for v2 filesystem
* (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
*
* 09.11.94 - Added test to prevent overwrite of mounted fs adapted
* from Theodore Ts'o's (tytso@athena.mit.edu) mke2fs
* program. (Daniel Quinlan, quinlan@yggdrasil.com)
*
* 03.20.95 - Clear first 512 bytes of filesystem to make certain that
* the filesystem is not misidentified as a MS-DOS FAT filesystem.
* (Daniel Quinlan, quinlan@yggdrasil.com)
*
* 02.07.96 - Added small patch from Russell King to make the program a
* good deal more portable (janl@math.uio.no)
*
* Usage: mkfs [-c | -l filename ] [-v] [-nXX] [-iXX] device [size-in-blocks]
*
* -c for readablility checking (SLOW!)
* -l for getting a list of bad blocks from a file.
* -n for namelength (currently the kernel only uses 14 or 30)
* -i for number of inodes
* -v for v2 filesystem
*
* 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 :-).
*
* Modified for BusyBox by Erik Andersen <andersen@debian.org> --
* removed getopt based parser and added a hand rolled one.
*/
#include "internal.h"
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <fcntl.h>
#include <ctype.h>
#include <stdlib.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/param.h>
#include <mntent.h>
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
#define MINIX_ROOT_INO 1
#define MINIX_LINK_MAX 250
#define MINIX2_LINK_MAX 65530
#define MINIX_I_MAP_SLOTS 8
#define MINIX_Z_MAP_SLOTS 64
#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */
#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */
#define MINIX_VALID_FS 0x0001 /* Clean fs. */
#define 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)))
#define MINIX_V1 0x0001 /* original minix fs */
#define 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)))
#define MINIX_VALID_FS 0x0001 /* Clean fs. */
#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
#ifndef BLKGETSIZE
#define BLKGETSIZE _IO(0x12,96) /* return device size */
#endif
#ifndef __linux__
#define volatile
#endif
#define MINIX_ROOT_INO 1
#define MINIX_BAD_INO 2
#define TEST_BUFFER_BLOCKS 16
#define MAX_GOOD_BLOCKS 512
#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 *device_name = NULL;
static int DEV = -1;
static long BLOCKS = 0;
static int check = 0;
static int badblocks = 0;
static int namelen = 30; /* default (changed to 30, per Linus's
suggestion, Sun Nov 21 08:05:07 1993) */
static int dirsize = 32;
static int magic = MINIX_SUPER_MAGIC2;
static int version2 = 0;
static char root_block[BLOCK_SIZE] = "\0";
static char *inode_buffer = NULL;
#define Inode (((struct minix_inode *) inode_buffer)-1)
#ifdef BB_FEATURE_MINIX2
#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
#endif
static char super_block_buffer[BLOCK_SIZE];
static char boot_block_buffer[512];
#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 short good_blocks_table[MAX_GOOD_BLOCKS];
static int used_good_blocks = 0;
static unsigned long req_nr_inodes = 0;
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)))
#define unmark_inode(x) (clrbit(inode_map,(x)))
#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1))
#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1))
/*
* Volatile to let gcc know that this doesn't return. When trying
* to compile this under minix, volatile gives a warning, as
* exit() isn't defined as volatile under minix.
*/
static volatile void die(char *str)
{
errorMsg("%s\n", str);
exit(8);
}
static volatile void show_usage() __attribute__ ((noreturn));
static volatile void show_usage()
{
usage(mkfs_minix_usage);
}
/*
* Check to make certain that our new filesystem won't be created on
* an already mounted partition. Code adapted from mke2fs, Copyright
* (C) 1994 Theodore Ts'o. Also licensed under GPL.
*/
static void check_mount(void)
{
FILE *f;
struct mntent *mnt;
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;
die("%s is mounted; will not make a filesystem here!");
}
static long valid_offset(int fd, int offset)
{
char ch;
if (lseek(fd, offset, 0) < 0)
return 0;
if (read(fd, &ch, 1) < 1)
return 0;
return 1;
}
static int count_blocks(int fd)
{
int high, low;
low = 0;
for (high = 1; valid_offset(fd, high); high *= 2)
low = high;
while (low < high - 1) {
const int mid = (low + high) / 2;
if (valid_offset(fd, mid))
low = mid;
else
high = mid;
}
valid_offset(fd, 0);
return (low + 1);
}
static int get_size(const char *file)
{
int fd;
long size;
fd = open(file, O_RDWR);
if (fd < 0) {
perror(file);
exit(1);
}
if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
close(fd);
return (size * 512);
}
size = count_blocks(fd);
close(fd);
return size;
}
static void write_tables(void)
{
/* Mark the super block valid. */
Super.s_state |= MINIX_VALID_FS;
Super.s_state &= ~MINIX_ERROR_FS;
if (lseek(DEV, 0, SEEK_SET))
die("seek to boot block failed in write_tables");
if (512 != write(DEV, boot_block_buffer, 512))
die("unable to clear boot sector");
if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET))
die("seek failed in write_tables");
if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE))
die("unable to write super-block");
if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE))
die("unable to write inode map");
if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE))
die("unable to write zone map");
if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE))
die("unable to write inodes");
}
static void write_block(int blk, char *buffer)
{
if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET))
die("seek failed in write_block");
if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE))
die("write failed in write_block");
}
static int get_free_block(void)
{
int blk;
if (used_good_blocks + 1 >= MAX_GOOD_BLOCKS)
die("too many bad blocks");
if (used_good_blocks)
blk = good_blocks_table[used_good_blocks - 1] + 1;
else
blk = FIRSTZONE;
while (blk < ZONES && zone_in_use(blk))
blk++;
if (blk >= ZONES)
die("not enough good blocks");
good_blocks_table[used_good_blocks] = blk;
used_good_blocks++;
return blk;
}
static void mark_good_blocks(void)
{
int blk;
for (blk = 0; blk < used_good_blocks; blk++)
mark_zone(good_blocks_table[blk]);
}
inline int next(int zone)
{
if (!zone)
zone = FIRSTZONE - 1;
while (++zone < ZONES)
if (zone_in_use(zone))
return zone;
return 0;
}
static void make_bad_inode(void)
{
struct minix_inode *inode = &Inode[MINIX_BAD_INO];
int i, j, zone;
int ind = 0, dind = 0;
unsigned short ind_block[BLOCK_SIZE >> 1];
unsigned short dind_block[BLOCK_SIZE >> 1];
#define NEXT_BAD (zone = next(zone))
if (!badblocks)
return;
mark_inode(MINIX_BAD_INO);
inode->i_nlinks = 1;
inode->i_time = time(NULL);
inode->i_mode = S_IFREG + 0000;
inode->i_size = badblocks * BLOCK_SIZE;
zone = next(0);
for (i = 0; i < 7; i++) {
inode->i_zone[i] = zone;
if (!NEXT_BAD)
goto end_bad;
}
inode->i_zone[7] = ind = get_free_block();
memset(ind_block, 0, BLOCK_SIZE);
for (i = 0; i < 512; i++) {
ind_block[i] = zone;
if (!NEXT_BAD)
goto end_bad;
}
inode->i_zone[8] = dind = get_free_block();
memset(dind_block, 0, BLOCK_SIZE);
for (i = 0; i < 512; i++) {
write_block(ind, (char *) ind_block);
dind_block[i] = ind = get_free_block();
memset(ind_block, 0, BLOCK_SIZE);
for (j = 0; j < 512; j++) {
ind_block[j] = zone;
if (!NEXT_BAD)
goto end_bad;
}
}
die("too many bad blocks");
end_bad:
if (ind)
write_block(ind, (char *) ind_block);
if (dind)
write_block(dind, (char *) dind_block);
}
#ifdef BB_FEATURE_MINIX2
static void make_bad_inode2(void)
{
struct minix2_inode *inode = &Inode2[MINIX_BAD_INO];
int i, j, zone;
int ind = 0, dind = 0;
unsigned long ind_block[BLOCK_SIZE >> 2];
unsigned long dind_block[BLOCK_SIZE >> 2];
if (!badblocks)
return;
mark_inode(MINIX_BAD_INO);
inode->i_nlinks = 1;
inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL);
inode->i_mode = S_IFREG + 0000;
inode->i_size = badblocks * BLOCK_SIZE;
zone = next(0);
for (i = 0; i < 7; i++) {
inode->i_zone[i] = zone;
if (!NEXT_BAD)
goto end_bad;
}
inode->i_zone[7] = ind = get_free_block();
memset(ind_block, 0, BLOCK_SIZE);
for (i = 0; i < 256; i++) {
ind_block[i] = zone;
if (!NEXT_BAD)
goto end_bad;
}
inode->i_zone[8] = dind = get_free_block();
memset(dind_block, 0, BLOCK_SIZE);
for (i = 0; i < 256; i++) {
write_block(ind, (char *) ind_block);
dind_block[i] = ind = get_free_block();
memset(ind_block, 0, BLOCK_SIZE);
for (j = 0; j < 256; j++) {
ind_block[j] = zone;
if (!NEXT_BAD)
goto end_bad;
}
}
/* Could make triple indirect block here */
die("too many bad blocks");
end_bad:
if (ind)
write_block(ind, (char *) ind_block);
if (dind)
write_block(dind, (char *) dind_block);
}
#endif
static void make_root_inode(void)
{
struct minix_inode *inode = &Inode[MINIX_ROOT_INO];
mark_inode(MINIX_ROOT_INO);
inode->i_zone[0] = get_free_block();
inode->i_nlinks = 2;
inode->i_time = time(NULL);
if (badblocks)
inode->i_size = 3 * dirsize;
else {
root_block[2 * dirsize] = '\0';
root_block[2 * dirsize + 1] = '\0';
inode->i_size = 2 * dirsize;
}
inode->i_mode = S_IFDIR + 0755;
inode->i_uid = getuid();
if (inode->i_uid)
inode->i_gid = getgid();
write_block(inode->i_zone[0], root_block);
}
#ifdef BB_FEATURE_MINIX2
static void make_root_inode2(void)
{
struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO];
mark_inode(MINIX_ROOT_INO);
inode->i_zone[0] = get_free_block();
inode->i_nlinks = 2;
inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL);
if (badblocks)
inode->i_size = 3 * dirsize;
else {
root_block[2 * dirsize] = '\0';
root_block[2 * dirsize + 1] = '\0';
inode->i_size = 2 * dirsize;
}
inode->i_mode = S_IFDIR + 0755;
inode->i_uid = getuid();
if (inode->i_uid)
inode->i_gid = getgid();
write_block(inode->i_zone[0], root_block);
}
#endif
static void setup_tables(void)
{
int i;
unsigned long inodes;
memset(super_block_buffer, 0, BLOCK_SIZE);
memset(boot_block_buffer, 0, 512);
MAGIC = magic;
ZONESIZE = 0;
MAXSIZE = version2 ? 0x7fffffff : (7 + 512 + 512 * 512) * 1024;
ZONES = BLOCKS;
/* some magic nrs: 1 inode / 3 blocks */
if (req_nr_inodes == 0)
inodes = BLOCKS / 3;
else
inodes = req_nr_inodes;
/* Round up inode count to fill block size */
#ifdef BB_FEATURE_MINIX2
if (version2)
inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) &
~(MINIX2_INODES_PER_BLOCK - 1));
else
#endif
inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) &
~(MINIX_INODES_PER_BLOCK - 1));
if (inodes > 65535)
inodes = 65535;
INODES = inodes;
IMAPS = UPPER(INODES + 1, BITS_PER_BLOCK);
ZMAPS = 0;
i = 0;
while (ZMAPS !=
UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1,
BITS_PER_BLOCK) && i < 1000) {
ZMAPS =
UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1,
BITS_PER_BLOCK);
i++;
}
/* Real bad hack but overwise mkfs.minix can be thrown
* in infinite loop...
* try:
* dd if=/dev/zero of=test.fs count=10 bs=1024
* /sbin/mkfs.minix -i 200 test.fs
* */
if (i >= 999) {
die("unable to allocate buffers for maps");
}
FIRSTZONE = NORM_FIRSTZONE;
inode_map = xmalloc(IMAPS * BLOCK_SIZE);
zone_map = xmalloc(ZMAPS * BLOCK_SIZE);
memset(inode_map, 0xff, IMAPS * BLOCK_SIZE);
memset(zone_map, 0xff, ZMAPS * BLOCK_SIZE);
for (i = FIRSTZONE; i < ZONES; i++)
unmark_zone(i);
for (i = MINIX_ROOT_INO; i <= INODES; i++)
unmark_inode(i);
inode_buffer = xmalloc(INODE_BUFFER_SIZE);
memset(inode_buffer, 0, INODE_BUFFER_SIZE);
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\n", MAXSIZE);
}
/*
* Perform a test of a block; return the number of
* blocks readable/writeable.
*/
long do_check(char *buffer, int try, unsigned int current_block)
{
long got;
/* Seek to the correct loc. */
if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) !=
current_block * BLOCK_SIZE) {
die("seek failed during testing of blocks");
}
/* Try the read */
got = read(DEV, buffer, try * BLOCK_SIZE);
if (got < 0)
got = 0;
if (got & (BLOCK_SIZE - 1)) {
printf("Weird values in do_check: probably bugs\n");
}
got /= BLOCK_SIZE;
return got;
}
static unsigned int currently_testing = 0;
static void alarm_intr(int alnum)
{
if (currently_testing >= ZONES)
return;
signal(SIGALRM, alarm_intr);
alarm(5);
if (!currently_testing)
return;
printf("%d ...", currently_testing);
fflush(stdout);
}
static void check_blocks(void)
{
int try, got;
static char buffer[BLOCK_SIZE * TEST_BUFFER_BLOCKS];
currently_testing = 0;
signal(SIGALRM, alarm_intr);
alarm(5);
while (currently_testing < ZONES) {
if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) !=
currently_testing * BLOCK_SIZE)
die("seek failed in check_blocks");
try = TEST_BUFFER_BLOCKS;
if (currently_testing + try > ZONES)
try = ZONES - currently_testing;
got = do_check(buffer, try, currently_testing);
currently_testing += got;
if (got == try)
continue;
if (currently_testing < FIRSTZONE)
die("bad blocks before data-area: cannot make fs");
mark_zone(currently_testing);
badblocks++;
currently_testing++;
}
if (badblocks > 1)
printf("%d bad blocks\n", badblocks);
else if (badblocks == 1)
printf("one bad block\n");
}
static void get_list_blocks(filename)
char *filename;
{
FILE *listfile;
unsigned long blockno;
listfile = fopen(filename, "r");
if (listfile == (FILE *) NULL) {
die("can't open file of bad blocks");
}
while (!feof(listfile)) {
fscanf(listfile, "%ld\n", &blockno);
mark_zone(blockno);
badblocks++;
}
if (badblocks > 1)
printf("%d bad blocks\n", badblocks);
else if (badblocks == 1)
printf("one bad block\n");
}
extern int mkfs_minix_main(int argc, char **argv)
{
int i=1;
char *tmp;
struct stat statbuf;
char *listfile = NULL;
int stopIt=FALSE;
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 inode size");
#endif
/* Parse options */
argv++;
while (--argc >= 0 && *argv && **argv) {
if (**argv == '-') {
stopIt=FALSE;
while (i > 0 && *++(*argv) && stopIt==FALSE) {
switch (**argv) {
case 'c':
check = 1;
break;
case 'i':
{
char *cp=NULL;
if (*(*argv+1) != 0) {
cp = ++(*argv);
} else {
if (--argc == 0) {
goto goodbye;
}
cp = *(++argv);
}
req_nr_inodes = strtoul(cp, &tmp, 0);
if (*tmp)
show_usage();
stopIt=TRUE;
break;
}
case 'l':
if (--argc == 0) {
goto goodbye;
}
listfile = *(++argv);
break;
case 'n':
{
char *cp=NULL;
if (*(*argv+1) != 0) {
cp = ++(*argv);
} else {
if (--argc == 0) {
goto goodbye;
}
cp = *(++argv);
}
i = strtoul(cp, &tmp, 0);
if (*tmp)
show_usage();
if (i == 14)
magic = MINIX_SUPER_MAGIC;
else if (i == 30)
magic = MINIX_SUPER_MAGIC2;
else
show_usage();
namelen = i;
dirsize = i + 2;
stopIt=TRUE;
break;
}
case 'v':
#ifdef BB_FEATURE_MINIX2
version2 = 1;
#else
errorMsg("%s: not compiled with minix v2 support\n",
device_name);
exit(-1);
#endif
break;
case '-':
case 'h':
default:
goodbye:
show_usage();
}
}
} else {
if (device_name == NULL)
device_name = *argv;
else if (BLOCKS == 0)
BLOCKS = strtol(*argv, &tmp, 0);
else {
goto goodbye;
}
}
argv++;
}
if (device_name && !BLOCKS)
BLOCKS = get_size(device_name) / 1024;
if (!device_name || BLOCKS < 10) {
show_usage();
}
#ifdef BB_FEATURE_MINIX2
if (version2) {
if (namelen == 14)
magic = MINIX2_SUPER_MAGIC;
else
magic = MINIX2_SUPER_MAGIC2;
} else
#endif
if (BLOCKS > 65535)
BLOCKS = 65535;
check_mount(); /* is it already mounted? */
tmp = root_block;
*(short *) tmp = 1;
strcpy(tmp + 2, ".");
tmp += dirsize;
*(short *) tmp = 1;
strcpy(tmp + 2, "..");
tmp += dirsize;
*(short *) tmp = 2;
strcpy(tmp + 2, ".badblocks");
DEV = open(device_name, O_RDWR);
if (DEV < 0)
die("unable to open %s");
if (fstat(DEV, &statbuf) < 0)
die("unable to stat %s");
if (!S_ISBLK(statbuf.st_mode))
check = 0;
else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
die("will not try to make filesystem on '%s'");
setup_tables();
if (check)
check_blocks();
else if (listfile)
get_list_blocks(listfile);
#ifdef BB_FEATURE_MINIX2
if (version2) {
make_root_inode2();
make_bad_inode2();
} else
#endif
{
make_root_inode();
make_bad_inode();
}
mark_good_blocks();
write_tables();
return( 0);
}