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);
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(argc, argv);
28	argv += optind;
29	argc -= optind;
30
31	if ((argc >= 2) && ((name = strchr(modes_chars, argv[1][0])) != NULL)) {
32		mode |= modes_cubp[(int)(name[4])];
33
34		dev = 0;
35		if ((*name != 'p') && ((argc -= 2) == 2)) {
36			/* Autodetect what the system supports; these macros should
37			 * optimize out to two constants. */
38			dev = makedev(xatoul_range(argv[2], 0, major(UINT_MAX)),
39			              xatoul_range(argv[3], 0, minor(UINT_MAX)));
40		}
41
42		if (argc == 2) {
43			name = *argv;
44			if (mknod(name, mode, dev) == 0) {
45				return EXIT_SUCCESS;
46			}
47			bb_perror_msg_and_die("%s", name);
48		}
49	}
50	bb_show_usage();
51}
52