While we're at it, it's safer to use sizeof than a defined buffer size.

[unix-history] / usr / src / sbin / mknod / mknod.c

/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Kevin Fall.
*
* %sccs.include.redist.c%
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)mknod.c     4.4 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>

main(argc, argv)
       int argc;
       char **argv;
{
       extern int errno;
       u_short mode;
       char *strerror();

       if (argc != 5) {
               (void)fprintf(stderr,
                   "usage: mknod name [b | c] major minor\n");
               exit(1);
       }

       mode = 0666;
       if (argv[2][0] == 'c')
               mode |= S_IFCHR;
       else if (argv[2][0] == 'b')
               mode |= S_IFBLK;
       else {
               (void)fprintf(stderr,
                   "mknod: node must be type 'b' or 'c'.\n");
               exit(1);
       }

       if (mknod(argv[1], mode, makedev(atoi(argv[3]), atoi(argv[4]))) < 0) {
               (void)fprintf(stderr,
                   "mknod: %s: %s\n", argv[1], strerror(errno));
               exit(1);
       }
       exit(0);
}