void usage(const char *prog, int status)
{
- fprintf(status == 0 ? stdout : stderr,
- "Usage: %s [OPTION]... FILE\n"
- " -d, --device=DEV use device number DEV\n"
- " -h, --help dispaly help\n"
- " -m, --mode=MODE use mode MODE\n"
- " -M, --major=MAJOR use device major MAJOR\n"
- " -N, --minor=MINOR use device minor MINOR\n",
- prog);
+ fprintf(status == 0 ? stdout : stderr,
+ "Usage: %s [OPTION]... FILE\n"
+ " -d, --device=DEV use device number DEV\n"
+ " -h, --help dispaly help\n"
+ " -m, --mode=MODE use mode MODE\n"
+ " -M, --major=MAJOR use device major MAJOR\n"
+ " -N, --minor=MINOR use device minor MINOR\n",
+ prog);
- exit(status);
+ exit(status);
}
-int main(int argc, char ** argv)
+int main(int argc, char **argv)
{
struct option opts[] = {
{ .name = "device", .has_arg = required_argument, .val = 'd' },
{ .name = "minor", .has_arg = required_argument, .val = 'N' },
{ .name = NULL }
};
- const char *path;
- mode_t mode = S_IFREG | 0644;
- dev_t dev = 0;
- int rc;
+ const char *path;
+ mode_t mode = S_IFREG | 0644;
+ dev_t dev = 0;
+ int rc;
+ int c;
- int c;
- while ((c = getopt_long(argc, argv, "d:hm:M:N:", opts, NULL)) != -1) {
- switch (c) {
- case 'd':
- dev = strtoul(optarg, NULL, 0);
- break;
- case 'h':
- usage(argv[0], 0);
- case 'm':
- mode = strtoul(optarg, NULL, 0);
- break;
- case 'M':
- dev = makedev(strtoul(optarg, NULL, 0), minor(dev));
- break;
- case 'N':
- dev = makedev(major(dev), strtoul(optarg, NULL, 0));
- break;
- case '?':
- usage(argv[0], 1);
- }
- }
+ while ((c = getopt_long(argc, argv, "d:hm:M:N:", opts, NULL)) != -1) {
+ switch (c) {
+ case 'd':
+ dev = strtoul(optarg, NULL, 0);
+ break;
+ case 'h':
+ usage(argv[0], 0);
+ case 'm':
+ mode = strtoul(optarg, NULL, 0);
+ break;
+ case 'M':
+ dev = makedev(strtoul(optarg, NULL, 0), minor(dev));
+ break;
+ case 'N':
+ dev = makedev(major(dev), strtoul(optarg, NULL, 0));
+ break;
+ case '?':
+ usage(argv[0], 1);
+ }
+ }
- if (argc - optind != 1)
- usage(argv[0], 1);
+ if (argc - optind != 1)
+ usage(argv[0], 1);
- path = argv[optind];
+ path = argv[optind];
- if ((mode & S_IFMT) == S_IFDIR)
- rc = mkdir(path, mode & ~S_IFMT);
- else if ((mode & S_IFMT) == S_IFLNK)
- rc = symlink("oldpath", path);
- else
- rc = mknod(path, mode, dev);
+ if ((mode & S_IFMT) == S_IFDIR)
+ rc = mkdir(path, mode & ~S_IFMT);
+ else if ((mode & S_IFMT) == S_IFLNK)
+ rc = symlink("oldpath", path);
+ else
+ rc = mknod(path, mode, dev);
- if (rc)
- fprintf(stderr, "%s: cannot create `%s' with mode %#o: %s\n",
- argv[0], path, mode, strerror(errno));
+ if (rc) {
+ rc = errno;
+ fprintf(stderr, "%s: cannot create `%s' with mode %#o: %s\n",
+ argv[0], path, mode, strerror(rc));
+ }
- return rc;
+ return rc;
}