| 1 | #!/usr/bin/env python
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| 2 | #
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| 3 | # Copyright (c) 2008 Martin Decky
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| 4 | # All rights reserved.
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| 5 | #
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| 6 | # Redistribution and use in source and binary forms, with or without
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| 7 | # modification, are permitted provided that the following conditions
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| 8 | # are met:
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| 9 | #
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| 10 | # - Redistributions of source code must retain the above copyright
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| 11 | # notice, this list of conditions and the following disclaimer.
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| 12 | # - Redistributions in binary form must reproduce the above copyright
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| 13 | # notice, this list of conditions and the following disclaimer in the
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| 14 | # documentation and/or other materials provided with the distribution.
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| 15 | # - The name of the author may not be used to endorse or promote products
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| 16 | # derived from this software without specific prior written permission.
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| 17 | #
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| 18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | #
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| 29 | """
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| 30 | TMPFS creator
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| 31 | """
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| 32 |
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| 33 | import sys
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| 34 | import os
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| 35 | import struct
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| 36 |
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| 37 | def usage(prname):
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| 38 | "Print usage syntax"
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| 39 | print prname + " <ALIGNMENT> <PATH> <IMAGE>"
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| 40 |
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| 41 | def recursion(root, outf):
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| 42 | "Recursive directory walk"
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| 43 |
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| 44 | payload_size = 0
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| 45 |
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| 46 | for name in os.listdir(root):
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| 47 | canon = os.path.join(root, name)
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| 48 |
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| 49 | if (os.path.isfile(canon)):
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| 50 | outf.write(struct.pack("<BL" + ("%d" % len(name)) + "s", 1, len(name), name))
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| 51 | payload_size += 5 + len(name)
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| 52 | size = os.path.getsize(canon)
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| 53 | rd = 0;
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| 54 | outf.write(struct.pack("<L", size))
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| 55 | payload_size += 4
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| 56 |
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| 57 | inf = file(canon, "r")
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| 58 | while (rd < size):
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| 59 | data = inf.read(4096);
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| 60 | outf.write(data)
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| 61 | payload_size += len(data)
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| 62 | rd += len(data)
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| 63 | inf.close()
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| 64 |
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| 65 | if (os.path.isdir(canon)):
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| 66 | outf.write(struct.pack("<BL" + ("%d" % len(name)) + "s", 2, len(name), name))
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| 67 | payload_size += 5 + len(name)
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| 68 | payload_size += recursion(canon, outf)
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| 69 | outf.write(struct.pack("<BL", 0, 0))
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| 70 | payload_size += 5
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| 71 |
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| 72 | return payload_size
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| 73 |
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| 74 | def main():
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| 75 | if (len(sys.argv) < 3):
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| 76 | usage(sys.argv[0])
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| 77 | return
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| 78 |
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| 79 | path = os.path.abspath(sys.argv[1])
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| 80 | if (not os.path.isdir(path)):
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| 81 | print "<PATH> must be a directory"
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| 82 | return
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| 83 |
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| 84 | outf = file(sys.argv[2], "w")
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| 85 |
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| 86 | outf.write(struct.pack("<5s", "TMPFS"))
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| 87 | recursion(path, outf)
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| 88 | outf.write(struct.pack("<BL", 0, 0))
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| 89 |
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| 90 | outf.close()
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| 91 |
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| 92 | if __name__ == '__main__':
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| 93 | main()
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