0,0 → 1,81 |
#!/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. |
# |
""" |
HORD encapsulator |
""" |
|
import sys |
import os |
import struct |
|
def align_up(size, alignment): |
"Align upwards to a given alignment" |
return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
|
|
def usage(prname): |
"Print usage syntax" |
print prname + " <ALIGNMENT> <FS_IMAGE> <HORD_IMAGE>" |
|
def main(): |
if (len(sys.argv) < 4): |
usage(sys.argv[0]) |
return |
|
if (not sys.argv[1].isdigit()): |
print "<ALIGNMENT> must be a number" |
return |
|
align = int(sys.argv[1], 0) |
fs_image = os.path.abspath(sys.argv[2]) |
if (not os.path.isfile(fs_image)): |
print "<FS_IMAGE> must be a directory" |
return |
|
inf = file(fs_image, "rb") |
outf = file(sys.argv[3], "wb") |
|
header_size = align_up(18, align) |
aligned_size = align_up(os.path.getsize(fs_image), align) |
|
|
outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
outf.write(struct.pack("<" + ("%d" % (header_size - 18)) + "x")) |
|
outf.write(inf.read()) |
|
padding = aligned_size - os.path.getsize(fs_image) |
if (padding > 0): |
outf.write(struct.pack("<" + ("%d" % padding) + "x")) |
|
inf.close() |
outf.close() |
|
if __name__ == '__main__': |
main() |
Property changes: |
Added: svn:executable |
+* |
\ No newline at end of property |