Annotation of /trunk/mkinitrd-magellan/busybox/util-linux/losetup.c
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Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
File MIME type: text/plain
File size: 1323 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 | * Mini losetup implementation for busybox | ||
4 | * | ||
5 | * Copyright (C) 2002 Matt Kraai. | ||
6 | * | ||
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. | ||
8 | */ | ||
9 | |||
10 | #include <getopt.h> | ||
11 | #include <stdlib.h> | ||
12 | |||
13 | #include "busybox.h" | ||
14 | |||
15 | int losetup_main(int argc, char **argv) | ||
16 | { | ||
17 | unsigned opt; | ||
18 | char *opt_o; | ||
19 | unsigned long long offset = 0; | ||
20 | |||
21 | opt = getopt32(argc, argv, "do:", &opt_o); | ||
22 | argc -= optind; | ||
23 | argv += optind; | ||
24 | |||
25 | if (opt == 0x3) // -d + -o (illegal) | ||
26 | bb_show_usage(); | ||
27 | |||
28 | if (opt == 0x1) { // -d | ||
29 | /* detach takes exactly one argument */ | ||
30 | if (argc != 1) | ||
31 | bb_show_usage(); | ||
32 | if (!del_loop(argv[0])) | ||
33 | return EXIT_SUCCESS; | ||
34 | bb_perror_nomsg_and_die(); | ||
35 | } | ||
36 | |||
37 | if (opt == 0x2) // -o | ||
38 | offset = xatoull(opt_o); | ||
39 | |||
40 | /* -o or no option */ | ||
41 | |||
42 | if (argc == 2) { | ||
43 | if (set_loop(&argv[0], argv[1], offset) < 0) | ||
44 | bb_perror_nomsg_and_die(); | ||
45 | } else if (argc == 1) { | ||
46 | char *s = query_loop(argv[0]); | ||
47 | if (!s) bb_perror_nomsg_and_die(); | ||
48 | printf("%s: %s\n", argv[0], s); | ||
49 | if (ENABLE_FEATURE_CLEAN_UP) free(s); | ||
50 | } else { | ||
51 | char dev[sizeof(LOOP_NAME"0")] = LOOP_NAME"0"; | ||
52 | char c; | ||
53 | for (c = '0'; c <= '9'; ++c) { | ||
54 | char *s; | ||
55 | dev[sizeof(LOOP_NAME"0")-2] = c; | ||
56 | s = query_loop(dev); | ||
57 | if (s) { | ||
58 | printf("%s: %s\n", dev, s); | ||
59 | if (ENABLE_FEATURE_CLEAN_UP) free(s); | ||
60 | } | ||
61 | } | ||
62 | } | ||
63 | return EXIT_SUCCESS; | ||
64 | } |