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mknod.c - sbase - suckless unix tools
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mknod.c (1171B)
---
1 /* See LICENSE file for copyright and license details. */
2 #include <sys/stat.h>
3 #include <sys/types.h>
4 #ifndef makedev
5 #include <sys/sysmacros.h>
6 #endif
7
8 #include <fcntl.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <unistd.h>
13
14 #include "util.h"
15
16 static void
17 usage(void)
18 {
19 eprintf("usage: %s [-m mode] name b|c|u major minor\n"
20 " %s [-m mode] name p\n",
21 argv0, argv0);
22 }
23
24 int
25 main(int argc, char *argv[])
26 {
27 mode_t mode = 0666;
28 dev_t dev;
29
30 ARGBEGIN {
31 case 'm':
32 mode = parsemode(EARGF(usage()), mode, umask(0));
33 break;
34 default:
35 usage();
36 } ARGEND;
37
38 if (argc < 2)
39 usage();
40
41 if (strlen(argv[1]) != 1)
42 goto invalid;
43 switch (argv[1][0]) {
44 case 'b':
45 mode |= S_IFBLK;
46 break;
47 case 'u':
48 case 'c':
49 mode |= S_IFCHR;
50 break;
51 case 'p':
52 mode |= S_IFIFO;
53 break;
54 default:
55 invalid:
56 eprintf("invalid type '%s'\n", argv[1]);
57 }
58
59 if (S_ISFIFO(mode)) {
60 if (argc != 2)
61 usage();
62 dev = 0;
63 } else {
64 if (argc != 4)
65 usage();
66 dev = makedev(estrtonum(argv[2], 0, LLONG_MAX), estrtonu…
67 }
68
69 if (mknod(argv[0], mode, dev) == -1)
70 eprintf("mknod %s:", argv[0]);
71 return 0;
72 }
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