82 lines
1.5 KiB
C
82 lines
1.5 KiB
C
#ifdef __linux__
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#include <sys/sysmacros.h>
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#endif
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#include <sys/stat.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdio.h>
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#include "parse_mode.h"
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long parse_int(const char *str) {
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char *ptr = NULL;
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long value = strtol(str, &ptr, 10);
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if (*ptr) {
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fprintf(stderr, "mknod: not a number: %s\n", str);
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exit(1);
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}
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else if (value < 1) {
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fprintf(stderr, "mknod: number is negative: %s\n", str);
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exit(1);
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}
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return value;
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}
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int main(int argc, char **argv) {
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mode_t mode = 0666;
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int opt;
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while ((opt = getopt(argc, argv, "m:")) != -1) {
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switch (opt) {
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case 'm':
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mode = mu_parse_mode(optarg, 0);
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break;
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default:
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printf("mknod [-m MODE] [NAME] [TYPE] [MAJOR MINOR]\n");
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printf("Types:\n\tb - block device\n\tc or u - character device\n\tp - named pipe/fifo (MAJOR MINOR must be omitted)\n\ts - socket\n");
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return 0;
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}
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}
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argv += optind;
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argc -= optind;
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if (argc <= 1) {
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fprintf(stderr, "mknod: missing operand\n");
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return 1;
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}
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dev_t dev = 0;
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if (argc == 4)
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dev = makedev(parse_int(argv[2]), parse_int(argv[3]));
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if (!strncmp("b", argv[1], 1))
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mode |= S_IFBLK;
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else if (!strncmp("c", argv[1], 1) || !strncmp("u", argv[1], 1))
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mode |= S_IFCHR;
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else if (!strncmp("p", argv[1], 1))
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mode |= S_IFIFO;
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else if (!strncmp("s", argv[1], 1))
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mode |= S_IFSOCK;
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else {
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fprintf(stderr, "mknod: unknow file type\n");
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return 1;
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}
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if (mknod(argv[0], mode, dev) < 0) {
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fprintf(stderr, "mknod: %s\n", strerror(errno));
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return 1;
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}
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return 0;
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}
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