Commit | Line | Data |
---|---|---|
9c79dca0 BJ |
1 | main(argc, argv) |
2 | int argc; | |
3 | char **argv; | |
4 | { | |
5 | int m, a, b; | |
6 | ||
7 | if(argc != 5) { | |
8 | printf("arg count\n"); | |
9 | goto usage; | |
10 | } | |
11 | if(*argv[2] == 'b') | |
12 | m = 060666; else | |
13 | if(*argv[2] == 'c') | |
14 | m = 020666; else | |
15 | goto usage; | |
16 | a = number(argv[3]); | |
17 | if(a < 0) | |
18 | goto usage; | |
19 | b = number(argv[4]); | |
20 | if(b < 0) | |
21 | goto usage; | |
22 | if(mknod(argv[1], m, (a<<8)|b) < 0) | |
23 | perror("mknod"); | |
24 | exit(0); | |
25 | ||
26 | usage: | |
27 | printf("usage: mknod name b/c major minor\n"); | |
28 | } | |
29 | ||
30 | number(s) | |
31 | char *s; | |
32 | { | |
33 | int n, c; | |
34 | ||
35 | n = 0; | |
36 | while(c = *s++) { | |
37 | if(c<'0' || c>'9') | |
38 | return(-1); | |
39 | n = n*10 + c-'0'; | |
40 | } | |
41 | return(n); | |
42 | } |