| 0,0 → 1,109 |
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| #!/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: |
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| Added: svn:executable |
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| +* |
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| \ No newline at end of property |
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