Article View: de.comp.sys.next
Article #477Re: named pipes, how?
From: Barry Lustig
Date: Wed, 18 Nov 1992 07:34
Date: Wed, 18 Nov 1992 07:34
103 lines
3791 bytes
3791 bytes
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);
}
--
Technical Details
Message-ID:
<1992Nov18.073424.25023@ictv.com>Path:
arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!ames!ictv!barryReferences:
<1992Nov11.174436.6275@tom.rz.uni-passau.de> <1992Nov17.161820.17367@ida.liu.se>Show Full Headers
Complete Article Headers
Newsgroups: de.comp.sys.next,comp.sys.next.sysadmin,comp.sys.next.misc Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!ames!ictv!barry From: barry@ictv.com (Barry Lustig) Subject: Re: named pipes, how? Message-ID: <1992Nov18.073424.25023@ictv.com> Sender: usenet@ictv.com Organization: ICTV, Santa Clara, CA (408) 562-9200 References: <1992Nov11.174436.6275@tom.rz.uni-passau.de> <1992Nov17.161820.17367@ida.liu.se> Date: Wed, 18 Nov 1992 07:34:24 GMT Lines: 103