new version from Kevin Fall

[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.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#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     4.3 (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);
}