0,0 → 1,109 |
#!/usr/bin/env python |
# |
# Copyright (c) 2008 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
""" |
FAT creator |
""" |
|
import sys |
import os |
import random |
import xstruct |
|
BOOT_SECTOR = """little: |
uint8_t jmp[3] /* jump instruction */ |
char oem[8] /* OEM string */ |
uint16_t sector /* bytes per sector */ |
uint8_t cluster /* sectors per cluster */ |
uint16_t reserved /* reserved sectors */ |
uint8_t fats /* number of FATs */ |
uint16_t rootdir /* root directory entries */ |
uint16_t sectors /* total number of sectors */ |
uint8_t descriptor /* media descriptor */ |
uint16_t fat_sectors /* sectors per single FAT */ |
uint16_t track_sectors /* sectors per track */ |
uint16_t heads /* number of heads */ |
uint32_t hidden /* hidden sectors */ |
uint32_t sectors_big /* total number of sectors (if sectors == 0) */ |
|
/* Extended BIOS Parameter Block */ |
uint8_t drive /* physical drive number */ |
padding[1] /* reserved (current head) */ |
uint8_t extboot_signature /* extended boot signature */ |
uint32_t serial /* serial number */ |
char label[11] /* volume label */ |
char fstype[8] /* filesystem type */ |
padding[448] /* boot code */ |
uint8_t boot_signature[2] /* boot signature */ |
""" |
|
def usage(prname): |
"Print usage syntax" |
print prname + " <PATH> <IMAGE>" |
|
def main(): |
if (len(sys.argv) < 3): |
usage(sys.argv[0]) |
return |
|
path = os.path.abspath(sys.argv[1]) |
if (not os.path.isdir(path)): |
print "<PATH> must be a directory" |
return |
|
outf = file(sys.argv[2], "w") |
|
boot_sector = xstruct.create(BOOT_SECTOR) |
boot_sector.jmp = [0xEB, 0x3C, 0x90] |
boot_sector.oem = "MSDOS5.0" |
boot_sector.sector = 512 |
boot_sector.cluster = 8 # 4096 bytes per cluster |
boot_sector.reserved = 1 |
boot_sector.fats = 2 |
boot_sector.rootdir = 224 # FIXME: root directory should be sector aligned |
boot_sector.sectors = 0 # FIXME |
boot_sector.descriptor = 0xF8 |
boot_sector.fat_sectors = 0 # FIXME |
boot_sector.track_sectors = 0 # FIXME |
boot_sector.heads = 0 # FIXME |
boot_sector.hidden = 0 |
boot_sector.sectors_big = 0 # FIXME |
|
boot_sector.drive = 0 |
boot_sector.extboot_signature = 0x29 |
boot_sector.serial = random.randint(0, 0xFFFFFFFF) |
boot_sector.label = "HELENOS" |
boot_sector.fstype = "FAT16 " |
boot_sector.boot_signature = [0x55, 0xAA] |
|
outf.write(boot_sector.pack()) |
|
outf.close() |
|
if __name__ == '__main__': |
main() |
Property changes: |
Added: svn:executable |
+* |
\ No newline at end of property |