1/* vi: set sw=4 ts=4: */
2/*
3 * mknod implementation for busybox
4 *
5 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
11
12#include <sys/sysmacros.h>  // For makedev
13
14#include "libbb.h"
15#include "libcoreutils/coreutils.h"
16
17static const char modes_chars[] ALIGN1 = { 'p', 'c', 'u', 'b', 0, 1, 1, 2 };
18static const mode_t modes_cubp[] = { S_IFIFO, S_IFCHR, S_IFBLK };
19
20int mknod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
21int mknod_main(int argc, char **argv)
22{
23	mode_t mode;
24	dev_t dev;
25	const char *name;
26
27	mode = getopt_mk_fifo_nod(argv);
28	argv += optind;
29	argc -= optind;
30
31	if (argc >= 2) {
32		name = strchr(modes_chars, argv[1][0]);
33		if (name != NULL) {
34			mode |= modes_cubp[(int)(name[4])];
35
36			dev = 0;
37			if (*name != 'p') {
38				argc -= 2;
39				if (argc == 2) {
40					/* Autodetect what the system supports; these macros should
41					 * optimize out to two constants. */
42					dev = makedev(xatoul_range(argv[2], 0, major(UINT_MAX)),
43					              xatoul_range(argv[3], 0, minor(UINT_MAX)));
44				}
45			}
46
47			if (argc == 2) {
48				name = *argv;
49				if (mknod(name, mode, dev) == 0) {
50					return EXIT_SUCCESS;
51				}
52				bb_simple_perror_msg_and_die(name);
53			}
54		}
55	}
56	bb_show_usage();
57}
58