Rev 3022 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 3022 | Rev 4055 | ||
|---|---|---|---|
| Line 30... | Line 30... | ||
| 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 xstruct |
| 36 | 36 | ||
| 37 | def align_up(size, alignment): |
37 | exclude_names = set(['.svn']) |
| - | 38 | ||
| - | 39 | HEADER = """little: |
|
| - | 40 | char tag[5] /* 'TMPFS' */ |
|
| - | 41 | """ |
|
| - | 42 | ||
| - | 43 | DENTRY_NONE = """little: |
|
| - | 44 | uint8_t kind /* NONE */ |
|
| - | 45 | uint32_t fname_len /* 0 */ |
|
| - | 46 | """ |
|
| - | 47 | ||
| - | 48 | DENTRY_FILE = """little: |
|
| - | 49 | uint8_t kind /* FILE */ |
|
| 38 | return (((size) + ((alignment) - 1)) & ~((alignment) - 1)) |
50 | uint32_t fname_len /* filename length */ |
| - | 51 | char fname[%d] /* filename */ |
|
| - | 52 | uint32_t flen /* file length */ |
|
| - | 53 | """ |
|
| - | 54 | ||
| - | 55 | DENTRY_DIRECTORY = """little: |
|
| - | 56 | uint8_t kind /* DIRECTORY */ |
|
| - | 57 | uint32_t fname_len /* filename length */ |
|
| - | 58 | char fname[%d] /* filename */ |
|
| - | 59 | """ |
|
| - | 60 | ||
| - | 61 | TMPFS_NONE = 0 |
|
| - | 62 | TMPFS_FILE = 1 |
|
| - | 63 | TMPFS_DIRECTORY = 2 |
|
| 39 | 64 | ||
| 40 | def usage(prname): |
65 | def usage(prname): |
| 41 | "Print usage syntax" |
66 | "Print usage syntax" |
| 42 | print prname + " <ALIGNMENT> <PATH> <IMAGE>" |
67 | print prname + " <PATH> <IMAGE>" |
| 43 | 68 | ||
| 44 | def main(): |
- | |
| 45 | if (len(sys.argv) < 4): |
69 | def recursion(root, outf): |
| 46 | usage(sys.argv[0]) |
70 | "Recursive directory walk" |
| 47 | return |
- | |
| 48 | 71 | ||
| 49 | if (not sys.argv[1].isdigit()): |
72 | for name in os.listdir(root): |
| 50 | print "<ALIGNMENT> must be a number" |
73 | canon = os.path.join(root, name) |
| 51 | return |
- | |
| 52 | 74 | ||
| 53 | align = int(sys.argv[1], 0) |
- | |
| 54 | path = os.path.abspath(sys.argv[2]) |
75 | if (os.path.isfile(canon) and (not name in exclude_names)): |
| 55 | if (not os.path.isdir(path)): |
76 | size = os.path.getsize(canon) |
| 56 | print "<PATH> must be a directory" |
- | |
| 57 | return |
- | |
| 58 | 77 | ||
| 59 | header_size = align_up(18, align) |
- | |
| 60 | payload_size = 0 |
- | |
| 61 | outf = file(sys.argv[3], "w") |
- | |
| 62 | outf.write(struct.pack("<" + ("%d" % header_size) + "x")) |
78 | dentry = xstruct.create(DENTRY_FILE % len(name)) |
| 63 | - | ||
| 64 | for root, dirs, files in os.walk(path): |
79 | dentry.kind = TMPFS_FILE |
| 65 | relpath = root[len(path):len(root)] |
80 | dentry.fname_len = len(name) |
| 66 | for name in files: |
81 | dentry.fname = name |
| 67 | canon = os.path.join(relpath, name) |
- | |
| 68 | outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 1, len(canon), canon)) |
- | |
| 69 | payload_size += 5 + len(canon) |
82 | dentry.flen = size |
| 70 | 83 | ||
| 71 | fn = os.path.join(root, name) |
- | |
| 72 | size = os.path.getsize(fn) |
- | |
| 73 | rd = 0; |
- | |
| 74 | outf.write(struct.pack("<L", size)) |
84 | outf.write(dentry.pack()) |
| 75 | payload_size += 4 |
- | |
| 76 | 85 | ||
| 77 | inf = file(fn, "r") |
86 | inf = file(canon, "r") |
| - | 87 | rd = 0; |
|
| 78 | while (rd < size): |
88 | while (rd < size): |
| 79 | data = inf.read(4096); |
89 | data = inf.read(4096); |
| 80 | outf.write(data) |
90 | outf.write(data) |
| 81 | payload_size += len(data) |
- | |
| 82 | rd += len(data) |
91 | rd += len(data) |
| 83 | inf.close() |
92 | inf.close() |
| 84 | 93 | ||
| - | 94 | if (os.path.isdir(canon) and (not name in exclude_names)): |
|
| - | 95 | dentry = xstruct.create(DENTRY_DIRECTORY % len(name)) |
|
| - | 96 | dentry.kind = TMPFS_DIRECTORY |
|
| - | 97 | dentry.fname_len = len(name) |
|
| 85 | for name in dirs: |
98 | dentry.fname = name |
| - | 99 | ||
| - | 100 | outf.write(dentry.pack()) |
|
| - | 101 | ||
| - | 102 | recursion(canon, outf) |
|
| - | 103 | ||
| - | 104 | dentry = xstruct.create(DENTRY_NONE) |
|
| - | 105 | dentry.kind = TMPFS_NONE |
|
| - | 106 | dentry.fname_len = 0 |
|
| - | 107 | ||
| - | 108 | outf.write(dentry.pack()) |
|
| - | 109 | ||
| - | 110 | def main(): |
|
| - | 111 | if (len(sys.argv) < 3): |
|
| - | 112 | usage(sys.argv[0]) |
|
| - | 113 | return |
|
| - | 114 | ||
| - | 115 | path = os.path.abspath(sys.argv[1]) |
|
| 86 | canon = os.path.join(relpath, name) |
116 | if (not os.path.isdir(path)): |
| 87 | outf.write(struct.pack("<BL" + ("%d" % len(canon)) + "s", 2, len(canon), canon)) |
117 | print "<PATH> must be a directory" |
| - | 118 | return |
|
| - | 119 | ||
| - | 120 | outf = file(sys.argv[2], "w") |
|
| - | 121 | ||
| 88 | payload_size += 5 + len(canon) |
122 | header = xstruct.create(HEADER) |
| - | 123 | header.tag = "TMPFS" |
|
| - | 124 | ||
| - | 125 | outf.write(header.pack()) |
|
| - | 126 | ||
| - | 127 | recursion(path, outf) |
|
| 89 | 128 | ||
| 90 | aligned_size = align_up(payload_size, align) |
129 | dentry = xstruct.create(DENTRY_NONE) |
| - | 130 | dentry.kind = TMPFS_NONE |
|
| - | 131 | dentry.fname_len = 0 |
|
| 91 | 132 | ||
| 92 | if (aligned_size - payload_size > 0): |
133 | outf.write(dentry.pack()) |
| 93 | outf.write(struct.pack("<" + ("%d" % (aligned_size - payload_size)) + "x")) |
- | |
| 94 | 134 | ||
| 95 | outf.seek(0) |
- | |
| 96 | outf.write(struct.pack("<4sBBLQ", "HORD", 1, 1, header_size, aligned_size)) |
- | |
| 97 | outf.close() |
135 | outf.close() |
| 98 | 136 | ||
| 99 | if __name__ == '__main__': |
137 | if __name__ == '__main__': |
| 100 | main() |
138 | main() |