usr/utils/mknod.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

char *progname;

static __noreturn usage(void)
{
	fprintf(stderr, "Usage: %s [-m mode] name {b|c|p} major minor\n",
			progname);
	exit(1);
}

int main(int argc, char *argv[])
{
	char *name, *type, typec, *endp;
	unsigned int major_num, minor_num;
	mode_t mode, mode_set = 0;
	dev_t dev;

	progname = *argv++;
	if (argc == 1)
		usage();

	if (argv[0][0] == '-' && argv[0][1] == 'm' && !argv[0][2]) {
		mode_set = strtoul(argv[1], &endp, 8);
		argv += 2;
	}

	name = *argv++;
	if (!name)
		usage();

	type = *argv++;
	if (!type || !type[0] || type[1])
		usage();
	typec = type[0];

	mode = 0;
	switch (typec) {
	case 'c':
		mode = S_IFCHR;
		break;
	case 'b':
		mode = S_IFBLK;
		break;
	case 'p':
		mode = S_IFIFO;
		break;
	default:
		usage();
	}

	if (mode == S_IFIFO) {
		dev = 0;
	} else {
		if (!argv[0] || !argv[1])
			usage();

		major_num = strtol(*argv++, &endp, 0);
		if (*endp != '\0')
			usage();
		minor_num = strtol(*argv++, &endp, 0);
		if (*endp != '\0')
			usage();
		dev = makedev(major_num, minor_num);
	}

	if (*argv)
		usage();

	if (mknod(name, mode|0666, dev) == -1) {
		perror("mknod");
		exit(1);
	}

	if (mode_set && chmod(name, mode_set)) {
		perror("chmod");
		exit(1);
	}

	exit(0);
}
1	niro	532	#include <stdio.h>
2			#include <stdlib.h>
3	niro	815	#include <string.h>
4	niro	532	#include <sys/stat.h>
5
6			char *progname;
7
8			static __noreturn usage(void)
9			{
10	niro	815	fprintf(stderr, "Usage: %s [-m mode] name {b\|c\|p} major minor\n",
11			progname);
12	niro	532	exit(1);
13			}
14
15			int main(int argc, char *argv[])
16			{
17			char name, type, typec, *endp;
18	niro	815	unsigned int major_num, minor_num;
19			mode_t mode, mode_set = 0;
20	niro	532	dev_t dev;
21
22			progname = *argv++;
23	niro	1297	if (argc == 1)
24			usage();
25	niro	532
26	niro	815	if (argv[0][0] == '-' && argv[0][1] == 'm' && !argv[0][2]) {
27			mode_set = strtoul(argv[1], &endp, 8);
28			argv += 2;
29			}
30
31	niro	532	name = *argv++;
32			if (!name)
33			usage();
34
35			type = *argv++;
36			if (!type \|\| !type[0] \|\| type[1])
37			usage();
38			typec = type[0];
39
40			mode = 0;
41	niro	1297	switch (typec) {
42	niro	532	case 'c':
43			mode = S_IFCHR;
44			break;
45			case 'b':
46			mode = S_IFBLK;
47			break;
48			case 'p':
49			mode = S_IFIFO;
50			break;
51			default:
52			usage();
53			}
54
55			if (mode == S_IFIFO) {
56			dev = 0;
57			} else {
58			if (!argv[0] \|\| !argv[1])
59			usage();
60
61	niro	815	major_num = strtol(*argv++, &endp, 0);
62	niro	532	if (*endp != '\0')
63			usage();
64	niro	815	minor_num = strtol(*argv++, &endp, 0);
65	niro	532	if (*endp != '\0')
66			usage();
67	niro	815	dev = makedev(major_num, minor_num);
68	niro	532	}
69
70			if (*argv)
71			usage();
72
73			if (mknod(name, mode\|0666, dev) == -1) {
74			perror("mknod");
75			exit(1);
76			}
77
78	niro	815	if (mode_set && chmod(name, mode_set)) {
79			perror("chmod");
80			exit(1);
81			}
82
83	niro	532	exit(0);
84			}