From: barry@ictv.com (Barry Lustig)
Subject: Re: named pipes, how?
Organization: ICTV, Santa Clara, CA (408) 562-9200
Date: Wed, 18 Nov 1992 07:34:24 GMT

Here is a slightly modified 386BSD version of mknod.  It supports
FIFOs using the same syntax as suns.

enjoy,

barry

/*
 * 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, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#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) 6/1/90";
#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) && (argc != 3)) {
		(void)fprintf(stderr,
		    "usage: mknod name [b | c] major minor\n");
		(void)fprintf(stderr,
		    "    or mknod name p\n");
		exit(1);
	}

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