mirror of
https://github.com/pbatard/rufus.git
synced 2024-08-14 23:57:05 +00:00
249 lines
9.4 KiB
C
249 lines
9.4 KiB
C
/******************************************************************
|
|
Copyright (C) 2009 Henrik Carlqvist
|
|
|
|
This program 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 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
******************************************************************/
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "file.h"
|
|
#include "fat32.h"
|
|
|
|
int is_fat_32_fs(FILE *fp)
|
|
{
|
|
char *szMagic = "FAT32 ";
|
|
|
|
return contains_data(fp, 0x52, szMagic, strlen(szMagic));
|
|
} /* is_fat_32_fs */
|
|
|
|
int is_fat_32_br(FILE *fp)
|
|
{
|
|
/* A "file" is probably some kind of FAT32 boot record if it contains the
|
|
magic chars 0x55, 0xAA at positions 0x1FE, 0x3FE and 0x5FE */
|
|
unsigned char aucRef[] = {0x55, 0xAA};
|
|
unsigned char aucMagic[] = {'M','S','W','I','N','4','.','1'};
|
|
int i;
|
|
|
|
for(i=0 ; i<3 ; i++)
|
|
if( ! contains_data(fp, 0x1FE + i*0x200, aucRef, sizeof(aucRef)))
|
|
return 0;
|
|
if( ! contains_data(fp, 0x03, aucMagic, sizeof(aucMagic)))
|
|
return 0;
|
|
return 1;
|
|
} /* is_fat_32_br */
|
|
|
|
int entire_fat_32_br_matches(FILE *fp)
|
|
{
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32_0x52.h"
|
|
#include "br_fat32_0x3f0.h"
|
|
|
|
return
|
|
( contains_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block might differ between systems */
|
|
contains_data(fp, 0x52, br_fat32_0x52, sizeof(br_fat32_0x52)) &&
|
|
/* Cluster information might differ between systems */
|
|
contains_data(fp, 0x3f0, br_fat32_0x3f0, sizeof(br_fat32_0x3f0)) );
|
|
} /* entire_fat_32_br_matches */
|
|
|
|
int write_fat_32_br(FILE *fp, int bKeepLabel)
|
|
{
|
|
#include "label_11_char.h"
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32_0x52.h"
|
|
#include "br_fat32_0x3f0.h"
|
|
|
|
if(bKeepLabel)
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block should not be overwritten */
|
|
write_data(fp, 0x52, br_fat32_0x52, sizeof(br_fat32_0x52)) &&
|
|
/* Cluster information is not overwritten, however, it would be OK
|
|
to write 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff here. */
|
|
write_data(fp, 0x3f0, br_fat32_0x3f0, sizeof(br_fat32_0x3f0)) );
|
|
else
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block should not be overwritten */
|
|
write_data(fp, 0x47, label_11_char, sizeof(label_11_char)) &&
|
|
write_data(fp, 0x52, br_fat32_0x52, sizeof(br_fat32_0x52)) &&
|
|
/* Cluster information is not overwritten, however, it would be OK
|
|
to write 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff here. */
|
|
write_data(fp, 0x3f0, br_fat32_0x3f0, sizeof(br_fat32_0x3f0)) );
|
|
} /* write_fat_32_br */
|
|
|
|
int entire_fat_32_fd_br_matches(FILE *fp)
|
|
{
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32fd_0x52.h"
|
|
#include "br_fat32fd_0x3f0.h"
|
|
|
|
return
|
|
( contains_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block might differ between systems */
|
|
contains_data(fp, 0x52, br_fat32_0x52, sizeof(br_fat32_0x52)) &&
|
|
/* Cluster information might differ between systems */
|
|
contains_data(fp, 0x3f0, br_fat32_0x3f0, sizeof(br_fat32_0x3f0)) );
|
|
} /* entire_fat_32_fd_br_matches */
|
|
|
|
int write_fat_32_fd_br(FILE *fp, int bKeepLabel)
|
|
{
|
|
#include "label_11_char.h"
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32fd_0x52.h"
|
|
#include "br_fat32fd_0x3f0.h"
|
|
|
|
if(bKeepLabel)
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block should not be overwritten */
|
|
write_data(fp, 0x52, br_fat32_0x52, sizeof(br_fat32_0x52)) &&
|
|
/* Cluster information is not overwritten, however, it would be OK
|
|
to write 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff here. */
|
|
write_data(fp, 0x3f0, br_fat32_0x3f0, sizeof(br_fat32_0x3f0)) );
|
|
else
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block should not be overwritten */
|
|
write_data(fp, 0x47, label_11_char, sizeof(label_11_char)) &&
|
|
write_data(fp, 0x52, br_fat32_0x52, sizeof(br_fat32_0x52)) &&
|
|
/* Cluster information is not overwritten, however, it would be OK
|
|
to write 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff here. */
|
|
write_data(fp, 0x3f0, br_fat32_0x3f0, sizeof(br_fat32_0x3f0)) );
|
|
} /* write_fat_32_fd_br */
|
|
|
|
int entire_fat_32_nt_br_matches(FILE *fp)
|
|
{
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32nt_0x52.h"
|
|
#include "br_fat32nt_0x3f0.h"
|
|
#include "br_fat32nt_0x1800.h"
|
|
|
|
return
|
|
( contains_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block might differ between systems */
|
|
contains_data(fp, 0x52, br_fat32nt_0x52, sizeof(br_fat32nt_0x52)) &&
|
|
/* Cluster information might differ between systems */
|
|
contains_data(fp, 0x3f0, br_fat32nt_0x3f0, sizeof(br_fat32nt_0x3f0)) &&
|
|
contains_data(fp, 0x1800, br_fat32nt_0x1800, sizeof(br_fat32nt_0x1800))
|
|
);
|
|
} /* entire_fat_32_nt_br_matches */
|
|
|
|
int write_fat_32_nt_br(FILE *fp, int bKeepLabel)
|
|
{
|
|
#include "label_11_char.h"
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32nt_0x52.h"
|
|
#include "br_fat32nt_0x3f0.h"
|
|
#include "br_fat32nt_0x1800.h"
|
|
|
|
if(bKeepLabel)
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block should not be overwritten */
|
|
write_data(fp, 0x52, br_fat32nt_0x52, sizeof(br_fat32nt_0x52)) &&
|
|
/* Cluster information is not overwritten, however, it would be OK
|
|
to write 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff here. */
|
|
write_data(fp, 0x3f0, br_fat32nt_0x3f0, sizeof(br_fat32nt_0x3f0)) &&
|
|
write_data(fp, 0x1800, br_fat32nt_0x1800, sizeof(br_fat32nt_0x1800))
|
|
);
|
|
else
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block should not be overwritten */
|
|
write_data(fp, 0x47, label_11_char, sizeof(label_11_char)) &&
|
|
write_data(fp, 0x52, br_fat32nt_0x52, sizeof(br_fat32nt_0x52)) &&
|
|
/* Cluster information is not overwritten, however, it would be OK
|
|
to write 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff here. */
|
|
write_data(fp, 0x3f0, br_fat32nt_0x3f0, sizeof(br_fat32nt_0x3f0)) &&
|
|
write_data(fp, 0x1800, br_fat32nt_0x1800, sizeof(br_fat32nt_0x1800))
|
|
);
|
|
} /* write_fat_32_nt_br */
|
|
|
|
int entire_fat_32_ros_br_matches(FILE *fp)
|
|
{
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32ros_0x52.h"
|
|
#include "br_fat32ros_0x3f0.h"
|
|
#include "br_fat32ros_0x1c00.h"
|
|
|
|
return
|
|
( contains_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block might differ between systems */
|
|
contains_data(fp, 0x52, br_fat32ros_0x52, sizeof(br_fat32ros_0x52)) &&
|
|
/* Cluster information might differ between systems */
|
|
contains_data(fp, 0x3f0, br_fat32ros_0x3f0, sizeof(br_fat32ros_0x3f0)) &&
|
|
contains_data(fp, 0x1c00, br_fat32ros_0x1c00, sizeof(br_fat32ros_0x1c00))
|
|
);
|
|
} /* entire_fat_32_ros_br_matches */
|
|
|
|
/* See http://doxygen.reactos.org/dc/d83/bootsup_8c_source.html#l01596 */
|
|
int write_fat_32_ros_br(FILE *fp, int bKeepLabel)
|
|
{
|
|
#include "label_11_char.h"
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32ros_0x52.h"
|
|
#include "br_fat32ros_0x3f0.h"
|
|
#include "br_fat32ros_0x1c00.h"
|
|
|
|
if(bKeepLabel)
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block should not be overwritten */
|
|
write_data(fp, 0x52, br_fat32ros_0x52, sizeof(br_fat32ros_0x52)) &&
|
|
/* Cluster information is not overwritten, however, it would be OK
|
|
to write 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff here. */
|
|
write_data(fp, 0x3f0, br_fat32ros_0x3f0, sizeof(br_fat32ros_0x3f0)) &&
|
|
write_data(fp, 0x1c00, br_fat32ros_0x1c00, sizeof(br_fat32ros_0x1c00))
|
|
);
|
|
else
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
/* BIOS Parameter Block should not be overwritten */
|
|
write_data(fp, 0x47, label_11_char, sizeof(label_11_char)) &&
|
|
write_data(fp, 0x52, br_fat32ros_0x52, sizeof(br_fat32ros_0x52)) &&
|
|
/* Cluster information is not overwritten, however, it would be OK
|
|
to write 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff here. */
|
|
write_data(fp, 0x3f0, br_fat32ros_0x3f0, sizeof(br_fat32ros_0x3f0)) &&
|
|
write_data(fp, 0x1c00, br_fat32ros_0x1c00, sizeof(br_fat32ros_0x1c00))
|
|
);
|
|
} /* write_fat_32_ros_br */
|
|
|
|
int entire_fat_32_kos_br_matches(FILE *fp)
|
|
{
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32kos_0x52.h"
|
|
|
|
return
|
|
( contains_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
contains_data(fp, 0x52, br_fat32kos_0x52, sizeof(br_fat32kos_0x52)) );
|
|
} /* entire_fat_32_kos_br_matches */
|
|
|
|
int write_fat_32_kos_br(FILE *fp, int bKeepLabel)
|
|
{
|
|
#include "label_11_char.h"
|
|
#include "br_fat32_0x0.h"
|
|
#include "br_fat32kos_0x52.h"
|
|
|
|
if(bKeepLabel)
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
write_data(fp, 0x52, br_fat32kos_0x52, sizeof(br_fat32kos_0x52)) );
|
|
else
|
|
return
|
|
( write_data(fp, 0x0, br_fat32_0x0, sizeof(br_fat32_0x0)) &&
|
|
write_data(fp, 0x47, label_11_char, sizeof(label_11_char)) &&
|
|
write_data(fp, 0x52, br_fat32kos_0x52, sizeof(br_fat32kos_0x52)) );
|
|
} /* write_fat_32_kos_br */
|