Annotation of /trunk/mkinitrd-magellan/busybox/archival/unlzma.c
Parent Directory | Revision Log
Revision 532 -
(hide annotations)
(download)
Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
File MIME type: text/plain
File size: 1587 byte(s)
Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
File MIME type: text/plain
File size: 1587 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | niro | 532 | /* vi: set sw=4 ts=4: */ |
2 | /* | ||
3 | * Small lzma deflate implementation. | ||
4 | * Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org> | ||
5 | * | ||
6 | * Based on bunzip.c from busybox | ||
7 | * | ||
8 | * Licensed under GPL v2, see file LICENSE in this tarball for details. | ||
9 | */ | ||
10 | |||
11 | /* Why our g[un]zip/bunzip2 are so ugly compared to this beauty? */ | ||
12 | |||
13 | #include "busybox.h" | ||
14 | #include "unarchive.h" | ||
15 | |||
16 | #define UNLZMA_OPT_STDOUT 1 | ||
17 | |||
18 | int unlzma_main(int argc, char **argv) | ||
19 | { | ||
20 | USE_DESKTOP(long long) int status; | ||
21 | char *filename; | ||
22 | unsigned opt; | ||
23 | int src_fd, dst_fd; | ||
24 | |||
25 | opt = getopt32(argc, argv, "c"); | ||
26 | |||
27 | /* Set input filename and number */ | ||
28 | filename = argv[optind]; | ||
29 | if (filename && NOT_LONE_DASH(filename)) { | ||
30 | /* Open input file */ | ||
31 | src_fd = xopen(filename, O_RDONLY); | ||
32 | } else { | ||
33 | src_fd = STDIN_FILENO; | ||
34 | filename = 0; | ||
35 | } | ||
36 | |||
37 | /* if called as lzmacat force the stdout flag */ | ||
38 | if ((opt & UNLZMA_OPT_STDOUT) || applet_name[4] == 'c') | ||
39 | filename = 0; | ||
40 | |||
41 | if (filename) { | ||
42 | struct stat stat_buf; | ||
43 | /* bug: char *extension = filename + strlen(filename) - 5; */ | ||
44 | char *extension = strrchr(filename, '.'); | ||
45 | if (!extension || strcmp(extension, ".lzma") != 0) { | ||
46 | bb_error_msg_and_die("invalid extension"); | ||
47 | } | ||
48 | xstat(filename, &stat_buf); | ||
49 | *extension = '\0'; | ||
50 | dst_fd = xopen3(filename, O_WRONLY | O_CREAT | O_TRUNC, | ||
51 | stat_buf.st_mode); | ||
52 | } else | ||
53 | dst_fd = STDOUT_FILENO; | ||
54 | status = unlzma(src_fd, dst_fd); | ||
55 | if (filename) { | ||
56 | if (status >= 0) /* if success delete src, else delete dst */ | ||
57 | filename[strlen(filename)] = '.'; | ||
58 | if (unlink(filename) < 0) { | ||
59 | bb_error_msg_and_die("cannot remove %s", filename); | ||
60 | } | ||
61 | } | ||
62 | |||
63 | return (status < 0); | ||
64 | } |