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| 1 | #!/usr/bin/env python |
1 | #!/usr/bin/env python |
| 2 | # |
2 | # |
| 3 | # Copyright (c) 2008 Martin Decky |
3 | # Copyright (c) 2008 Martin Decky |
| 4 | # All rights reserved. |
4 | # All rights reserved. |
| 5 | # |
5 | # |
| 6 | # Redistribution and use in source and binary forms, with or without |
6 | # Redistribution and use in source and binary forms, with or without |
| 7 | # modification, are permitted provided that the following conditions |
7 | # modification, are permitted provided that the following conditions |
| 8 | # are met: |
8 | # are met: |
| 9 | # |
9 | # |
| 10 | # - Redistributions of source code must retain the above copyright |
10 | # - Redistributions of source code must retain the above copyright |
| 11 | # notice, this list of conditions and the following disclaimer. |
11 | # notice, this list of conditions and the following disclaimer. |
| 12 | # - Redistributions in binary form must reproduce the above copyright |
12 | # - Redistributions in binary form must reproduce the above copyright |
| 13 | # notice, this list of conditions and the following disclaimer in the |
13 | # notice, this list of conditions and the following disclaimer in the |
| 14 | # documentation and/or other materials provided with the distribution. |
14 | # documentation and/or other materials provided with the distribution. |
| 15 | # - The name of the author may not be used to endorse or promote products |
15 | # - The name of the author may not be used to endorse or promote products |
| 16 | # derived from this software without specific prior written permission. |
16 | # derived from this software without specific prior written permission. |
| 17 | # |
17 | # |
| 18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | # |
28 | # |
| 29 | """ |
29 | """ |
| 30 | TMPFS creator |
30 | TMPFS creator |
| 31 | """ |
31 | """ |
| 32 | 32 | ||
| 33 | import sys |
33 | import sys |
| 34 | import os |
34 | import os |
| 35 | import struct |
35 | import struct |
| 36 | 36 | ||
| 37 | def align_up(size, alignment): |
37 | def align_up(size, alignment): |
| 38 | "Align upwards to a given alignment" |
38 | "Align upwards to a given alignment" |
| 39 | return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
39 | return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
| 40 | 40 | ||
| 41 | def usage(prname): |
41 | def usage(prname): |
| 42 | "Print usage syntax" |
42 | "Print usage syntax" |
| 43 | print prname + " <ALIGNMENT> <PATH> <IMAGE>" |
43 | print prname + " <ALIGNMENT> <PATH> <IMAGE>" |
| 44 | 44 | ||
| - | 45 | def recursion(root, outf): |
|
| - | 46 | "Recursive directory walk" |
|
| - | 47 | ||
| - | 48 | payload_size = 0 |
|
| - | 49 | ||
| - | 50 | for name in os.listdir(root): |
|
| - | 51 | canon = os.path.join(root, name) |
|
| - | 52 | ||
| - | 53 | if (os.path.isfile(canon)): |
|
| - | 54 | outf.write(struct.pack("<BL" + ("%d" % len(name)) + "s", 1, len(name), name)) |
|
| - | 55 | payload_size += 5 + len(name) |
|
| - | 56 | size = os.path.getsize(canon) |
|
| - | 57 | rd = 0; |
|
| - | 58 | outf.write(struct.pack("<L", size)) |
|
| - | 59 | payload_size += 4 |
|
| - | 60 | ||
| - | 61 | inf = file(canon, "r") |
|
| - | 62 | while (rd < size): |
|
| - | 63 | data = inf.read(4096); |
|
| - | 64 | outf.write(data) |
|
| - | 65 | payload_size += len(data) |
|
| - | 66 | rd += len(data) |
|
| - | 67 | inf.close() |
|
| - | 68 | ||
| - | 69 | if (os.path.isdir(canon)): |
|
| - | 70 | outf.write(struct.pack("<BL" + ("%d" % len(name)) + "s", 2, len(name), name)) |
|
| - | 71 | payload_size += 5 + len(name) |
|
| - | 72 | payload_size += recursion(canon, outf) |
|
| - | 73 | outf.write(struct.pack("<BL", 0, 0)) |
|
| - | 74 | payload_size += 5 |
|
| - | 75 | ||
| - | 76 | return payload_size |
|
| - | 77 | ||
| 45 | def main(): |
78 | def main(): |
| 46 | if (len(sys.argv) < 4): |
79 | if (len(sys.argv) < 4): |
| 47 | usage(sys.argv[0]) |
80 | usage(sys.argv[0]) |
| 48 | return |
81 | return |
| 49 | 82 | ||
| 50 | if (not sys.argv[1].isdigit()): |
83 | if (not sys.argv[1].isdigit()): |
| 51 | print "<ALIGNMENT> must be a number" |
84 | print "<ALIGNMENT> must be a number" |
| 52 | return |
85 | return |
| 53 | 86 | ||
| 54 | align = int(sys.argv[1], 0) |
87 | align = int(sys.argv[1], 0) |
| 55 | path = os.path.abspath(sys.argv[2]) |
88 | path = os.path.abspath(sys.argv[2]) |
| 56 | if (not os.path.isdir(path)): |
89 | if (not os.path.isdir(path)): |
| 57 | print "<PATH> must be a directory" |
90 | print "<PATH> must be a directory" |
| 58 | return |
91 | return |
| 59 | 92 | ||
| 60 | header_size = align_up(18, align) |
93 | header_size = align_up(18, align) |
| 61 | payload_size = 0 |
- | |
| 62 | outf = file(sys.argv[3], "w") |
94 | outf = file(sys.argv[3], "w") |
| 63 | outf.write(struct.pack("<" + ("%d" % header_size) + "x")) |
95 | outf.write(struct.pack("<" + ("%d" % header_size) + "x")) |
| 64 | 96 | ||
| 65 | for root, dirs, files in os.walk(path): |
- | |
| 66 | relpath = root[len(path):len(root)] |
- | |
| 67 | for name in files: |
- | |
| 68 | canon = os.path.join(relpath, name) |
- | |
| 69 | outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 1, len(canon), canon)) |
- | |
| 70 | payload_size += 5 + len(canon) |
- | |
| 71 | - | ||
| 72 | fn = os.path.join(root, name) |
- | |
| 73 | size = os.path.getsize(fn) |
- | |
| 74 | rd = 0; |
- | |
| 75 | outf.write(struct.pack("<L", size)) |
97 | outf.write(struct.pack("<5s", "TMPFS")) |
| 76 | payload_size += 4 |
98 | payload_size = 5 |
| 77 | 99 | ||
| 78 | inf = file(fn, "r") |
- | |
| 79 | while (rd < size): |
- | |
| 80 | data = inf.read(4096); |
- | |
| 81 | outf.write(data) |
- | |
| 82 | payload_size += len(data) |
100 | payload_size += recursion(path, outf) |
| 83 | rd += len(data) |
- | |
| 84 | inf.close() |
- | |
| 85 | 101 | ||
| 86 | for name in dirs: |
- | |
| 87 | canon = os.path.join(relpath, name) |
- | |
| 88 | outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 2, len(canon), canon)) |
102 | outf.write(struct.pack("<BL", 0, 0)) |
| 89 | payload_size += 5 + len(canon) |
103 | payload_size += 5 |
| 90 | 104 | ||
| 91 | aligned_size = align_up(payload_size, align) |
105 | aligned_size = align_up(payload_size, align) |
| 92 | 106 | ||
| 93 | if (aligned_size - payload_size > 0): |
107 | if (aligned_size - payload_size > 0): |
| 94 | outf.write(struct.pack("<" + ("%d" % (aligned_size - payload_size)) + "x")) |
108 | outf.write(struct.pack("<" + ("%d" % (aligned_size - payload_size)) + "x")) |
| 95 | 109 | ||
| 96 | outf.seek(0) |
110 | outf.seek(0) |
| 97 | outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
111 | outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
| 98 | outf.close() |
112 | outf.close() |
| 99 | 113 | ||
| 100 | if __name__ == '__main__': |
114 | if __name__ == '__main__': |
| 101 | main() |
115 | main() |
| 102 | 116 | ||