NetBSD/usr.sbin/nfsiod/nfsiod.c

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1993-03-21 12:45:37 +03:00
/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* 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 Regents of the University of California.\n\
All rights reserved.\n";
#endif not lint
#ifndef lint
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/*static char sccsid[] = "from: @(#)nfsiod.c 5.4 (Berkeley) 6/29/90";*/
static char rcsid[] = "$Id: nfsiod.c,v 1.6 1993/08/01 18:25:53 mycroft Exp $";
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#endif not lint
#include <stdio.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
/* Global defs */
#ifdef DEBUG
int debug = 1;
#else
int debug = 0;
#endif
void not_nfsclient();
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/*
* Nfsiod does asynchronous buffered I/O on behalf of the NFS client.
* It does not have to be running for correct operation, but will improve
* throughput. The one optional argument is the number of children to fork.
*/
main(argc, argv)
int argc;
char *argv[];
{
register int i;
int cnt;
signal(SIGSYS, not_nfsclient);
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if (debug == 0) {
daemon(0, 0);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
signal(SIGTERM, SIG_IGN);
signal(SIGHUP, SIG_IGN);
}
if (argc != 2 || (cnt = atoi(argv[1])) <= 0 || cnt > 20)
cnt = 1;
for (i = 1; i < cnt; i++)
if (fork() == 0)
break;
async_daemon(); /* Never returns */
exit(1);
}
void not_nfsclient()
{
(void) fprintf(stderr, "nfsd: not configured as NFS client\n");
exit(1);
}