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mformat.c
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/* Copyright 1986-1992 Emmet P. Gray.
* Copyright 1994,1996-2009 Alain Knaff.
* This file is part of mtools.
*
* Mtools is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Mtools is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Mtools. If not, see <http://www.gnu.org/licenses/>.
*
* mformat.c
*/
#define DONT_NEED_WAIT
#include "sysincludes.h"
#include "msdos.h"
#include "mtools.h"
#include "mainloop.h"
#include "fsP.h"
#include "file.h"
#include "plain_io.h"
#include "floppyd_io.h"
#include "nameclash.h"
#include "buffer.h"
#ifdef HAVE_ASSERT_H
#include <assert.h>
#endif
#ifdef USE_XDF
#include "xdf_io.h"
#endif
#include "partition.h"
#include "file_name.h"
#ifndef abs
#define abs(x) ((x)>0?(x):-(x))
#endif
#ifdef OS_linux
#include "linux/hdreg.h"
#define _LINUX_STRING_H_
#define kdev_t int
#include "linux/fs.h"
#undef _LINUX_STRING_H_
#endif
static int init_geometry_boot(union bootsector *boot, struct device *dev,
int sectors0, int rate_0, int rate_any,
unsigned long *tot_sectors, int keepBoot)
{
int i;
int nb_renum;
int sector2;
int size2;
int j;
int sum;
set_word(boot->boot.nsect, dev->sectors);
set_word(boot->boot.nheads, dev->heads);
#ifdef HAVE_ASSERT_H
assert(*tot_sectors != 0);
#endif
if (*tot_sectors < 0x10000){
set_word(boot->boot.psect, *tot_sectors);
set_dword(boot->boot.bigsect, 0);
} else {
set_word(boot->boot.psect, 0);
set_dword(boot->boot.bigsect, *tot_sectors);
}
if (dev->use_2m & 0x7f){
int bootOffset;
strncpy(boot->boot.banner, "2M-STV04", 8);
boot->boot.ext.old.res_2m = 0;
boot->boot.ext.old.fmt_2mf = 6;
if ( dev->sectors % ( ((1 << dev->ssize) + 3) >> 2 ))
boot->boot.ext.old.wt = 1;
else
boot->boot.ext.old.wt = 0;
boot->boot.ext.old.rate_0= rate_0;
boot->boot.ext.old.rate_any= rate_any;
if (boot->boot.ext.old.rate_any== 2 )
boot->boot.ext.old.rate_any= 1;
i=76;
/* Infp0 */
set_word(boot->boot.ext.old.Infp0, i);
boot->bytes[i++] = sectors0;
boot->bytes[i++] = 108;
for(j=1; j<= sectors0; j++)
boot->bytes[i++] = j;
set_word(boot->boot.ext.old.InfpX, i);
boot->bytes[i++] = 64;
boot->bytes[i++] = 3;
nb_renum = i++;
sector2 = dev->sectors;
size2 = dev->ssize;
j=1;
while( sector2 ){
while ( sector2 < (1 << size2) >> 2 )
size2--;
boot->bytes[i++] = 128 + j;
boot->bytes[i++] = j++;
boot->bytes[i++] = size2;
sector2 -= (1 << size2) >> 2;
}
boot->bytes[nb_renum] = ( i - nb_renum - 1 ) / 3;
set_word(boot->boot.ext.old.InfTm, i);
sector2 = dev->sectors;
size2= dev->ssize;
while(sector2){
while ( sector2 < 1 << ( size2 - 2) )
size2--;
boot->bytes[i++] = size2;
sector2 -= 1 << (size2 - 2 );
}
set_word(boot->boot.ext.old.BootP,i);
bootOffset = i;
/* checksum */
for (sum=0, j=64; j<i; j++)
sum += boot->bytes[j];/* checksum */
boot->boot.ext.old.CheckSum=-sum;
return bootOffset;
} else {
if(!keepBoot) {
boot->boot.jump[0] = 0xeb;
boot->boot.jump[1] = 0;
boot->boot.jump[2] = 0x90;
strncpy(boot->boot.banner, mformat_banner, 8);
/* It looks like some versions of DOS are
* rather picky about this, and assume default
* parameters without this, ignoring any
* indication about cluster size et al. */
}
return 0;
}
}
static int comp_fat_bits(Fs_t *Fs, int estimate,
unsigned long tot_sectors, int fat32)
{
int needed_fat_bits;
needed_fat_bits = 12;
#define MAX_DISK_SIZE(bits,clusters) \
TOTAL_DISK_SIZE((bits), Fs->sector_size, (clusters), \
Fs->num_fat, MAX_BYTES_PER_CLUSTER/Fs->sector_size)
if(tot_sectors > MAX_DISK_SIZE(12, FAT12-1))
needed_fat_bits = 16;
if(fat32 || tot_sectors > MAX_DISK_SIZE(16, FAT16-1))
needed_fat_bits = 32;
#undef MAX_DISK_SIZE
if(abs(estimate) && abs(estimate) < needed_fat_bits) {
if(fat32) {
fprintf(stderr,
"Contradiction between FAT size on command line and FAT size in conf file\n");
exit(1);
}
fprintf(stderr,
"Device too big for a %d bit FAT\n",
estimate);
exit(1);
}
if(!estimate) {
unsigned int min_fat16_size;
if(needed_fat_bits > 12)
return needed_fat_bits;
min_fat16_size = DISK_SIZE(16, Fs->sector_size, FAT12,
Fs->num_fat, 1);
if(tot_sectors < min_fat16_size)
return 12;
else if(Fs->cluster_size == 0 &&
tot_sectors >= 2* min_fat16_size)
return 16; /* heuristics */
}
return estimate;
}
/*
* According to Microsoft "Hardware White Paper", "Microsoft
* Extensible Formware Initiative", "FAT32 File System Specification",
* Version 1.03, December 6, 2000:
* If (CountofClusters < 4085) {
* // Volume is FAT12
* } else if (CountofClusters < 65525) {
* // Volume is FAT16
* } else {
* //Volume is FAT32
* }
*
* This document can be found at the following URL
* http://www.microsoft.com/hwdev/download/hardware/fatgen103.pdf
* The relevant passus is on page 15.
*
* Actually, experimentations with Windows NT 4 show that the
* cutoff is 4087 rather than 4085... This is Microsoft after all.
* Not sure what the other Microsoft OS'es do though...
*/
static void calc_fat_bits2(Fs_t *Fs, unsigned long tot_sectors, int fat_bits,
int may_change_cluster_size,
int may_change_root_size)
{
unsigned long rem_sect;
/*
* the "remaining sectors" after directory and boot
* hasve been accounted for.
*/
rem_sect = tot_sectors - Fs->dir_len - Fs->fat_start;
switch(abs(fat_bits)) {
case 0:
#define MY_DISK_SIZE(bits,clusters) \
DISK_SIZE( (bits), Fs->sector_size, (clusters), \
Fs->num_fat, Fs->cluster_size)
if(rem_sect >= MY_DISK_SIZE(16, FAT12+2))
/* big enough for FAT16
* We take a margin of 2, because NT4
* misbehaves, and starts considering a disk
* as FAT16 only if it is larger than 4086
* sectors, rather than 4084 as it should
*/
set_fat16(Fs);
else if(rem_sect <= MY_DISK_SIZE(12, FAT12-1))
/* small enough for FAT12 */
set_fat12(Fs);
else {
/* "between two chairs",
* augment cluster size, and
* settle it */
if(may_change_cluster_size &&
Fs->cluster_size * Fs->sector_size * 2
<= MAX_BYTES_PER_CLUSTER)
Fs->cluster_size <<= 1;
else if(may_change_root_size) {
Fs->dir_len +=
rem_sect - MY_DISK_SIZE(12, FAT12-1);
}
set_fat12(Fs);
}
break;
#undef MY_DISK_SIZE
case 12:
set_fat12(Fs);
break;
case 16:
set_fat16(Fs);
break;
case 32:
set_fat32(Fs);
break;
}
}
static __inline__ void format_root(Fs_t *Fs, char *label, union bootsector *boot)
{
Stream_t *RootDir;
char *buf;
int i;
struct ClashHandling_t ch;
int dirlen;
init_clash_handling(&ch);
ch.name_converter = label_name_uc;
ch.ignore_entry = -2;
buf = safe_malloc(Fs->sector_size);
RootDir = OpenRoot((Stream_t *)Fs);
if(!RootDir){
fprintf(stderr,"Could not open root directory\n");
exit(1);
}
memset(buf, '\0', Fs->sector_size);
if(Fs->fat_bits == 32) {
/* on a FAT32 system, we only write one sector,
* as the directory can be extended at will...*/
dirlen = Fs->cluster_size;
fatAllocate(Fs, Fs->rootCluster, Fs->end_fat);
} else
dirlen = Fs->dir_len;
for (i = 0; i < dirlen; i++)
WRITES(RootDir, buf, sectorsToBytes((Stream_t*)Fs, i),
Fs->sector_size);
ch.ignore_entry = 1;
if(label[0])
mwrite_one(RootDir,label, 0, labelit, NULL,&ch);
FREE(&RootDir);
if(Fs->fat_bits == 32)
set_word(boot->boot.dirents, 0);
else
set_word(boot->boot.dirents, Fs->dir_len * (Fs->sector_size / 32));
free(buf);
}
#ifdef USE_XDF
static void xdf_calc_fat_size(Fs_t *Fs, unsigned long tot_sectors,
int fat_bits)
{
unsigned int rem_sect;
rem_sect = tot_sectors - Fs->dir_len - Fs->fat_start - 2 * Fs->fat_len;
if(Fs->fat_len) {
/* an XDF disk, we know the fat_size and have to find
* out the rest. We start with a cluster size of 1 and
* keep doubling until everything fits into the
* FAT. This will occur eventually, as our FAT has a
* minimal size of 1 */
for(Fs->cluster_size = 1; 1 ; Fs->cluster_size <<= 1) {
Fs->num_clus = rem_sect / Fs->cluster_size;
if(abs(fat_bits) == 16 || Fs->num_clus >= FAT12)
set_fat16(Fs);
else
set_fat12(Fs);
if (Fs->fat_len >= NEEDED_FAT_SIZE(Fs))
return;
}
}
fprintf(stderr,"Internal error while calculating Xdf fat size\n");
exit(1);
}
#endif
static void calc_fat_size(Fs_t *Fs, unsigned long tot_sectors)
{
unsigned long rem_sect;
unsigned long real_rem_sect;
unsigned long numerator;
unsigned long denominator;
int fat_nybbles;
unsigned int slack;
int printGrowMsg=1; /* Should we print "growing FAT" messages ?*/
#ifdef DEBUG
fprintf(stderr, "Fat start=%d\n", Fs->fat_start);
fprintf(stderr, "tot_sectors=%lu\n", tot_sectors);
fprintf(stderr, "dir_len=%d\n", Fs->dir_len);
#endif
real_rem_sect = rem_sect = tot_sectors - Fs->dir_len - Fs->fat_start;
/* Cheat a little bit to address the _really_ common case of
odd number of remaining sectors while both nfat and cluster size
are even... */
if(rem_sect %2 == 1 &&
Fs->num_fat %2 == 0 &&
Fs->cluster_size %2 == 0)
rem_sect--;
#ifdef DEBUG
fprintf(stderr, "Rem sect=%lu\n", rem_sect);
#endif
if(Fs->fat_bits == 0) {
fprintf(stderr, "Weird, fat bits = 0\n");
exit(1);
}
/* See fat_size_calculation.tex or
(http://ftp.gnu.org/software/mtools/manual/fat_size_calculation.pdf)
for an explantation about why the stuff below works...
*/
fat_nybbles = Fs->fat_bits / 4;
numerator = rem_sect+2*Fs->cluster_size;
denominator =
Fs->cluster_size * Fs->sector_size * 2 +
Fs->num_fat * fat_nybbles;
if(fat_nybbles == 3)
numerator *= fat_nybbles;
else
/* Avoid numerical overflows, divide the denominator
* rather than multiplying the numerator */
denominator = denominator / fat_nybbles;
#ifdef DEBUG
fprintf(stderr, "Numerator=%lu denominator=%lu\n",
numerator, denominator);
#endif
Fs->fat_len = (numerator-1)/denominator+1;
Fs->num_clus = (rem_sect-(Fs->fat_len*Fs->num_fat))/Fs->cluster_size;
/* Apply upper bounds for FAT bits */
if(Fs->fat_bits == 16 && Fs->num_clus >= FAT16)
Fs->num_clus = FAT16-1;
if(Fs->fat_bits == 12 && Fs->num_clus >= FAT12)
Fs->num_clus = FAT12-1;
/* A safety, if above math is correct, this should not be happen...*/
if(Fs->num_clus > (Fs->fat_len * Fs->sector_size * 2 /
fat_nybbles - 2)) {
fprintf(stderr,
"Fat size miscalculation, shrinking num_clus from %d ",
Fs->num_clus);
Fs->num_clus = (Fs->fat_len * Fs->sector_size * 2 /
fat_nybbles - 2);
fprintf(stderr, " to %d\n", Fs->num_clus);
}
#ifdef DEBUG
fprintf(stderr, "Num_clus=%d fat_len=%d nybbles=%d\n",
Fs->num_clus, Fs->fat_len, fat_nybbles);
#endif
if ( Fs->num_clus < FAT16 && Fs->fat_bits > 16 ){
fprintf(stderr,"Too few clusters for this fat size."
" Please choose a 16-bit fat in your /etc/mtools.conf"
" or .mtoolsrc file\n");
exit(1);
}
/* As the number of clusters is specified nowhere in the boot sector,
* it will be calculated by removing everything else from total number
* of sectors. This means that if we reduced the number of clusters
* above, we will have to grow the FAT in order to take up any excess
* sectors... */
#ifdef HAVE_ASSERT_H
assert(rem_sect >= Fs->num_clus * Fs->cluster_size +
Fs->fat_len * Fs->num_fat);
#endif
slack = rem_sect -
Fs->num_clus * Fs->cluster_size -
Fs->fat_len * Fs->num_fat;
if(slack >= Fs->cluster_size) {
/* This can happen under two circumstances:
1. We had to reduce num_clus because we reached maximum
number of cluster for FAT12 or FAT16
*/
if(printGrowMsg) {
fprintf(stderr, "Slack=%d\n", slack);
fprintf(stderr, "Growing fat size from %d",
Fs->fat_len);
}
Fs->fat_len +=
(slack - Fs->cluster_size) / Fs->num_fat + 1;
if(printGrowMsg) {
fprintf(stderr,
" to %d in order to take up excess cluster area\n",
Fs->fat_len);
}
Fs->num_clus = (rem_sect-(Fs->fat_len*Fs->num_fat))/
Fs->cluster_size;
}
#ifdef HAVE_ASSERT_H
/* Fat must be big enough for all clusters */
assert( ((Fs->num_clus+2) * fat_nybbles) <=
(Fs->fat_len*Fs->sector_size*2));
/* num_clus must be big enough to cover rest of disk, or else further
* users of the filesystem will assume a bigger num_clus, which might
* be too big for fat_len */
assert(Fs->num_clus ==
(real_rem_sect - Fs->num_fat * Fs->fat_len) / Fs->cluster_size);
#endif
}
static unsigned char bootprog[]=
{0xfa, 0x31, 0xc0, 0x8e, 0xd8, 0x8e, 0xc0, 0xfc, 0xb9, 0x00, 0x01,
0xbe, 0x00, 0x7c, 0xbf, 0x00, 0x80, 0xf3, 0xa5, 0xea, 0x00, 0x00,
0x00, 0x08, 0xb8, 0x01, 0x02, 0xbb, 0x00, 0x7c, 0xba, 0x80, 0x00,
0xb9, 0x01, 0x00, 0xcd, 0x13, 0x72, 0x05, 0xea, 0x00, 0x7c, 0x00,
0x00, 0xcd, 0x19};
static __inline__ void inst_boot_prg(union bootsector *boot, int offset)
{
memcpy((char *) boot->boot.jump + offset,
(char *) bootprog, sizeof(bootprog) /sizeof(bootprog[0]));
if(offset - 2 < 0x80) {
/* short jump */
boot->boot.jump[0] = 0xeb;
boot->boot.jump[1] = offset -2;
boot->boot.jump[2] = 0x90;
} else {
/* long jump, if offset is too large */
boot->boot.jump[0] = 0xe9;
boot->boot.jump[1] = offset -3;
boot->boot.jump[2] = 0x00;
}
set_word(boot->boot.jump + offset + 20, offset + 24);
}
static void calc_cluster_size(struct Fs_t *Fs, unsigned long tot_sectors,
int fat_bits)
{
unsigned int max_clusters; /* maximal possible number of sectors for
* this FAT entry length (12/16/32) */
unsigned int max_fat_size; /* maximal size of the FAT for this FAT
* entry length (12/16/32) */
unsigned int rem_sect; /* remaining sectors after we accounted for
* the root directory and boot sector(s) */
switch(abs(fat_bits)) {
case 12:
max_clusters = FAT12-1;
max_fat_size = Fs->num_fat *
FAT_SIZE(12, Fs->sector_size, max_clusters);
break;
case 16:
case 0: /* still hesititating between 12 and 16 */
max_clusters = FAT16-1;
max_fat_size = Fs->num_fat *
FAT_SIZE(16, Fs->sector_size, max_clusters);
break;
case 32:
Fs->cluster_size = 8;
/* According to
* http://support.microsoft.com/support/kb/articles/q154/9/97.asp
* Micro$oft does not support FAT32 with less than 4K
*/
return;
default:
fprintf(stderr,"Bad fat size\n");
exit(1);
}
if(tot_sectors <= Fs->fat_start + Fs->num_fat + Fs->dir_len) {
/* we need at least enough sectors to fit boot, fat and root
* dir */
fprintf(stderr, "Not enough sectors\n");
exit(1);
}
rem_sect = tot_sectors - Fs->dir_len - Fs->fat_start;
/* double the cluster size until we can fill up the disk with
* the maximal number of sectors of this size */
while(Fs->cluster_size * max_clusters + max_fat_size < rem_sect) {
if(Fs->cluster_size > 64) {
/* bigger than 64. Should fit */
fprintf(stderr,
"Internal error while calculating cluster size\n");
exit(1);
}
Fs->cluster_size <<= 1;
}
}
struct OldDos_t old_dos[]={
{ 40, 9, 1, 4, 1, 2, 0xfc },
{ 40, 9, 2, 7, 2, 2, 0xfd },
{ 40, 8, 1, 4, 1, 1, 0xfe },
{ 40, 8, 2, 7, 2, 1, 0xff },
{ 80, 9, 2, 7, 2, 3, 0xf9 },
{ 80, 15, 2,14, 1, 7, 0xf9 },
{ 80, 18, 2,14, 1, 9, 0xf0 },
{ 80, 36, 2,15, 2, 9, 0xf0 },
{ 1, 8, 1, 1, 1, 1, 0xf0 },
};
static int old_dos_size_to_geom(size_t size, int *cyls, int *heads, int *sects)
{
unsigned int i;
size = size * 2;
for(i=0; i < sizeof(old_dos) / sizeof(old_dos[0]); i++){
if (old_dos[i].sectors *
old_dos[i].tracks *
old_dos[i].heads == size) {
*cyls = old_dos[i].tracks;
*heads = old_dos[i].heads;
*sects = old_dos[i].sectors;
return 0;
}
}
return 1;
}
static void calc_fs_parameters(struct device *dev, unsigned long tot_sectors,
struct Fs_t *Fs, union bootsector *boot)
{
unsigned int i;
for(i=0; i < sizeof(old_dos) / sizeof(old_dos[0]); i++){
if (dev->sectors == old_dos[i].sectors &&
dev->tracks == old_dos[i].tracks &&
dev->heads == old_dos[i].heads &&
(dev->fat_bits == 0 || abs(dev->fat_bits) == 12) &&
(Fs->dir_len == 0 || Fs->dir_len == old_dos[i].dir_len) &&
(Fs->cluster_size == 0 ||
Fs->cluster_size == old_dos[i].cluster_size)) {
boot->boot.descr = old_dos[i].media;
Fs->cluster_size = old_dos[i].cluster_size;
Fs->dir_len = old_dos[i].dir_len;
Fs->fat_len = old_dos[i].fat_len;
Fs->fat_bits = 12;
break;
}
}
if (i == sizeof(old_dos) / sizeof(old_dos[0]) ){
int may_change_cluster_size = (Fs->cluster_size == 0);
int may_change_root_size = (Fs->dir_len == 0);
/* a non-standard format */
if(DWORD(nhs) || tot_sectors % (dev->sectors * dev->heads))
boot->boot.descr = 0xf8;
else
boot->boot.descr = 0xf0;
if(!Fs->cluster_size) {
if (dev->heads == 1)
Fs->cluster_size = 1;
else {
Fs->cluster_size = (tot_sectors > 2000 ) ? 1:2;
if (dev->use_2m & 0x7f)
Fs->cluster_size = 1;
}
}
if(!Fs->dir_len) {
if (dev->heads == 1)
Fs->dir_len = 4;
else
Fs->dir_len = (tot_sectors > 2000) ? 32 : 7;
}
calc_cluster_size(Fs, tot_sectors, dev->fat_bits);
#ifdef USE_XDF
if(Fs->fat_len)
xdf_calc_fat_size(Fs, tot_sectors, dev->fat_bits);
else
#endif
{
calc_fat_bits2(Fs, tot_sectors, dev->fat_bits,
may_change_cluster_size,
may_change_root_size);
calc_fat_size(Fs, tot_sectors);
}
}
set_word(boot->boot.fatlen, Fs->fat_len);
}
static void calc_fs_parameters_32(unsigned long tot_sectors,
struct Fs_t *Fs, union bootsector *boot)
{
if(DWORD(nhs))
boot->boot.descr = 0xf8;
else
boot->boot.descr = 0xf0;
if(!Fs->cluster_size)
/* According to
* http://www.microsoft.com/kb/articles/q154/9/97.htm,
* Micro$oft does not support FAT32 with less than 4K
*/
Fs->cluster_size = 8;
Fs->dir_len = 0;
Fs->num_clus = tot_sectors / Fs->cluster_size;
set_fat32(Fs);
calc_fat_size(Fs, tot_sectors);
set_word(boot->boot.fatlen, 0);
set_dword(boot->boot.ext.fat32.bigFat, Fs->fat_len);
}
static void usage(int ret)
{
fprintf(stderr,
"Mtools version %s, dated %s\n", mversion, mdate);
fprintf(stderr,
"Usage: %s [-V] [-t tracks] [-h heads] [-n sectors] "
"[-v label] [-1] [-4] [-8] [-f size] "
"[-N serialnumber] "
"[-k] [-B bootsector] [-r root_dir_len] [-L fat_len] "
"[-F] [-I fsVersion] [-C] [-c cluster_size] "
"[-H hidden_sectors] "
#ifdef USE_XDF
"[-X] "
#endif
"[-S hardsectorsize] [-M softsectorsize] [-3] "
"[-2 track0sectors] [-0 rate0] [-A rateany] [-a]"
"device\n", progname);
exit(ret);
}
#ifdef OS_linux
static int get_block_geom(int fd, struct device *dev, char *errmsg) {
struct hd_geometry geom;
long size;
int heads=dev->heads;
int sectors=dev->sectors;
int sect_per_track;
if (ioctl(fd, HDIO_GETGEO, &geom) < 0) {
sprintf(errmsg, "Could not get geometry of device (%s)",
strerror(errno));
return -1;
}
if (ioctl(fd, BLKGETSIZE, &size) < 0) {
sprintf(errmsg, "Could not get size of device (%s)",
strerror(errno));
return -1;
}
if(!heads)
heads = geom.heads;
if(!sectors)
sectors = geom.sectors;
sect_per_track = heads * sectors;
if(!dev->hidden) {
int hidden;
hidden = geom.start % sect_per_track;
if(hidden && hidden != sectors) {
sprintf(errmsg,
"Hidden (%d) does not match sectors (%d)\n",
hidden, sectors);
return -1;
}
dev->hidden = hidden;
}
dev->heads = heads;
dev->sectors = sectors;
if(!dev->tracks)
dev->tracks = (size + dev->hidden % sect_per_track) / sect_per_track;
return 0;
}
#endif
void mformat(int argc, char **argv, int dummy)
{
int r; /* generic return value */
Fs_t Fs;
int hs, hs_set;
int arguse_2m = 0;
int sectors0=18; /* number of sectors on track 0 */
int create = 0;
int rate_0, rate_any;
int mangled;
int argssize=0; /* sector size */
int msize=0;
int fat32 = 0;
struct label_blk_t *labelBlock;
int bootOffset;
#ifdef USE_XDF
unsigned int i;
int format_xdf = 0;
struct xdf_info info;
#endif
union bootsector boot;
char *bootSector=0;
int c;
int keepBoot = 0;
struct device used_dev;
int argtracks, argheads, argsectors;
unsigned long tot_sectors=0;
int blocksize;
char drive, name[EXPAND_BUF];
char label[VBUFSIZE];
dos_name_t shortlabel;
struct device *dev;
char errmsg[200];
unsigned long serial;
int serial_set;
int fsVersion;
int mediaDesc=-1;
mt_size_t maxSize;
int Atari = 0; /* should we add an Atari-style serial number ? */
int backupBoot = 6;
char *endptr;
hs = hs_set = 0;
argtracks = 0;
argheads = 0;
argsectors = 0;
arguse_2m = 0;
argssize = 0x2;
label[0] = '\0';
serial_set = 0;
serial = 0;
fsVersion = 0;
Fs.cluster_size = 0;
Fs.refs = 1;
Fs.dir_len = 0;
if(getenv("MTOOLS_DIR_LEN")) {
Fs.dir_len = atoi(getenv("MTOOLS_DIR_LEN"));
if(Fs.dir_len <= 0)
Fs.dir_len=0;
}
Fs.fat_len = 0;
Fs.num_fat = 2;
if(getenv("MTOOLS_NFATS")) {
Fs.num_fat = atoi(getenv("MTOOLS_NFATS"));
if(Fs.num_fat <= 0)
Fs.num_fat=2;
}
Fs.Class = &FsClass;
rate_0 = mtools_rate_0;
rate_any = mtools_rate_any;
/* get command line options */
if(helpFlag(argc, argv))
usage(0);
while ((c = getopt(argc,argv,
"i:148f:t:n:v:qub"
"kK:B:r:L:I:FCc:Xh:s:T:l:N:H:M:S:2:30:Aad:m:"))!= EOF) {
endptr = NULL;
switch (c) {
case 'i':
set_cmd_line_image(optarg);
break;
/* standard DOS flags */
case '1':
argheads = 1;
break;
case '4':
argsectors = 9;
argtracks = 40;
break;
case '8':
argsectors = 8;
argtracks = 40;
break;
case 'f':
r=old_dos_size_to_geom(atoi(optarg),
&argtracks, &argheads,
&argsectors);
if(r) {
fprintf(stderr,
"Bad size %s\n", optarg);
exit(1);
}
break;
case 't':
argtracks = atoi(optarg);
break;
case 'T':
tot_sectors = atoi(optarg);
break;
case 'n': /*non-standard*/
case 's':
argsectors = atoi(optarg);
break;
case 'l': /* non-standard */
case 'v':
strncpy(label, optarg, VBUFSIZE-1);
label[VBUFSIZE-1] = '\0';
break;
/* flags supported by Dos but not mtools */
case 'q':
case 'u':
case 'b':
/*case 's': leave this for compatibility */
fprintf(stderr,
"Flag %c not supported by mtools\n",c);
exit(1);
/* flags added by mtools */
case 'F':
fat32 = 1;
break;
case 'S':
argssize = atoi(optarg) | 0x80;
if(argssize < 0x80)
usage(1);
if(argssize >= 0x87) {
fprintf(stderr, "argssize must be less than 6\n");
usage(1);
}
break;
#ifdef USE_XDF
case 'X':
format_xdf = 1;
break;
#endif
case '2':
arguse_2m = 0xff;
sectors0 = atoi(optarg);
break;
case '3':
arguse_2m = 0x80;
break;
case '0': /* rate on track 0 */
rate_0 = atoi(optarg);
break;
case 'A': /* rate on other tracks */
rate_any = atoi(optarg);
break;
case 'M':
msize = atoi(optarg);
if(msize != 512 &&
msize != 1024 &&
msize != 2048 &&
msize != 4096) {
fprintf(stderr, "Only sector sizes of 512, 1024, 2048 or 4096 bytes are allowed\n");
usage(1);
}
break;
case 'N':
serial = strtoul(optarg,&endptr,16);
serial_set = 1;
break;
case 'a': /* Atari style serial number */
Atari = 1;
break;
case 'C':
create = O_CREAT | O_TRUNC;
break;
case 'H':
hs = atoi(optarg);
hs_set = 1;
break;
case 'I':
fsVersion = strtoul(optarg,&endptr,0);
break;
case 'c':
Fs.cluster_size = atoi(optarg);
break;
case 'r':
Fs.dir_len = strtoul(optarg,&endptr,0);
break;
case 'L':
Fs.fat_len = strtoul(optarg,&endptr,0);
break;
case 'B':
bootSector = optarg;
break;
case 'k':
keepBoot = 1;
break;
case 'K':
backupBoot = atoi(optarg);
if(backupBoot < 2 || backupBoot >= 32) {