1/* vi: set sw=4 ts=4: */
2/*
3 * Mini cpio implementation for busybox
4 *
5 * Copyright (C) 2001 by Glenn McGrath
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Limitations:
22 *		Doesn't check CRC's
23 *		Only supports new ASCII and CRC formats
24 *
25 */
26#include <fcntl.h>
27#include <getopt.h>
28#include <stdlib.h>
29#include <string.h>
30#include <unistd.h>
31#include "busybox.h"
32
33extern int cpio_main(int argc, char **argv)
34{
35	FILE *src_stream = stdin;
36	char **extract_names = NULL;
37	int extract_function = 0;
38	int num_of_entries = 0;
39	int opt = 0;
40	mode_t oldmask = 0;
41
42	while ((opt = getopt(argc, argv, "idmuvtF:")) != -1) {
43		switch (opt) {
44		case 'i': // extract
45			extract_function |= extract_all_to_fs;
46			break;
47		case 'd': // create _leading_ directories
48			extract_function |= extract_create_leading_dirs;
49			oldmask = umask(077); /* Make make_directory act like GNU cpio */
50			break;
51		case 'm': // preserve modification time
52			extract_function |= extract_preserve_date;
53			break;
54		case 'v': // verbosly list files
55			extract_function |= extract_verbose_list;
56			break;
57		case 'u': // unconditional
58			extract_function |= extract_unconditional;
59			break;
60		case 't': // list files
61			extract_function |= extract_list;
62			break;
63		case 'F':
64			src_stream = xfopen(optarg, "r");
65			break;
66		default:
67			show_usage();
68		}
69	}
70
71	if ((extract_function & extract_all_to_fs) && (extract_function & extract_list)) {
72		extract_function ^= extract_all_to_fs; /* If specify t, don't extract*/
73	}
74
75	if ((extract_function & extract_all_to_fs) && (extract_function & extract_verbose_list)) {
76		/* The meaning of v changes on extract */
77		extract_function ^= extract_verbose_list;
78		extract_function |= extract_list;
79	}
80
81	while (optind < argc) {
82		extract_names = xrealloc(extract_names, sizeof(char *) * (num_of_entries + 2));
83		extract_names[num_of_entries] = xstrdup(argv[optind]);
84		num_of_entries++;
85		extract_names[num_of_entries] = NULL;
86		optind++;
87	}
88
89	unarchive(src_stream, stdout, &get_header_cpio, extract_function, "./", extract_names);
90	if (oldmask) {
91		umask(oldmask); /* Restore umask if we changed it */
92	}
93	return EXIT_SUCCESS;
94}
95
96