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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.
#
"""
TMPFS creator
"""
import sys
import os
import xstruct
from imgutil import listdir_items, chunks
HEADER = """little:
char tag[5] /* 'TMPFS' */
"""
DENTRY_NONE = """little:
uint8_t kind /* NONE */
uint32_t fname_len /* 0 */
"""
DENTRY_FILE = """little:
uint8_t kind /* FILE */
uint32_t fname_len /* filename length */
char fname[%d] /* filename */
uint32_t flen /* file length */
"""
DENTRY_DIRECTORY = """little:
uint8_t kind /* DIRECTORY */
uint32_t fname_len /* filename length */
char fname[%d] /* filename */
"""
TMPFS_NONE = 0
TMPFS_FILE = 1
TMPFS_DIRECTORY = 2
def usage(prname):
"Print usage syntax"
print(prname + " <PATH> <IMAGE>")
def recursion(root, outf):
"Recursive directory walk"
for item in listdir_items(root):
if item.is_file:
dentry = xstruct.create(DENTRY_FILE % len(item.name))
dentry.kind = TMPFS_FILE
dentry.fname_len = len(item.name)
dentry.fname = item.name.encode('ascii')
dentry.flen = item.size
outf.write(dentry.pack())
for data in chunks(item, 4096):
outf.write(data)
elif item.is_dir:
dentry = xstruct.create(DENTRY_DIRECTORY % len(item.name))
dentry.kind = TMPFS_DIRECTORY
dentry.fname_len = len(item.name)
dentry.fname = item.name.encode('ascii')
outf.write(dentry.pack())
recursion(item.path, outf)
dentry = xstruct.create(DENTRY_NONE)
dentry.kind = TMPFS_NONE
dentry.fname_len = 0
outf.write(dentry.pack())
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 = open(sys.argv[2], "wb")
header = xstruct.create(HEADER)
header.tag = b"TMPFS"
outf.write(header.pack())
recursion(path, outf)
dentry = xstruct.create(DENTRY_NONE)
dentry.kind = TMPFS_NONE
dentry.fname_len = 0
outf.write(dentry.pack())
outf.close()
if __name__ == '__main__':
main()
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