NetBSD/usr.sbin/rpc.lockd/lockd.c

176 lines
5.3 KiB
C

/* $NetBSD: lockd.c,v 1.4 2000/02/02 18:17:42 bouyer Exp $ */
/*
* Copyright (c) 1995
* A.R. Gordon (andrew.gordon@net-tel.co.uk). All rights reserved.
*
* 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 for the FreeBSD project
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ANDREW GORDON 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 AUTHOR 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.
*
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: lockd.c,v 1.4 2000/02/02 18:17:42 bouyer Exp $");
#endif
/*
* main() function for NFS lock daemon. Most of the code in this
* file was generated by running rpcgen /usr/include/rpcsvc/nlm_prot.x.
*
* The actual program logic is in the file procs.c
*/
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
#include <unistd.h>
#include <util.h>
#include <rpc/rpc.h>
#include <rpcsvc/sm_inter.h>
#include "lockd.h"
#include "nlm_prot.h"
/*
* XXX - Actual locking is not implemented. Some notes from the FreeBSD
* rpc.lockd/handles.c:
*
* - Need to find all fds in use by a host and free them when host crashes
* (need not be efficient)
* - Need to find fd corresponding to <inode, device>
*/
typedef struct fdinfo {
int fd; /* The file descriptor itself */
int ref_count; /* Count of hosts using the fd - fd is
closed when this reaches zero */
ino_t inode_no; /* The inode number of this file. */
dev_t device; /* device on which the file lives. */
struct fdinfo *next; /* Chain of FdInfo structures */
struct fdinfo *prev;
} FdInfo;
int debug_level = 0; /* 0 = no debugging syslog() calls */
int _rpcsvcdirty = 0;
int main __P((int, char **));
void nlm_prog_1 __P((struct svc_req *, SVCXPRT *));
void nlm_prog_3 __P((struct svc_req *, SVCXPRT *));
void nlm_prog_4 __P((struct svc_req *, SVCXPRT *));
int
main(argc, argv)
int argc;
char **argv;
{
SVCXPRT *transp;
int ch;
while ((ch = getopt(argc, argv, "d:")) != (-1)) {
switch (ch) {
case 'd':
debug_level = atoi(optarg);
if (!debug_level) {
errx(1, "usage: rpc.lockd [-d <debuglevel>]");
/* NOTREACHED */
}
break;
default:
case '?':
errx(1, "usage: rpc.lockd [-d <debuglevel>]");
/* NOTREACHED */
}
}
(void)pmap_unset(NLM_PROG, NLM_VERS);
(void)pmap_unset(NLM_PROG, NLM_VERSX);
(void)pmap_unset(NLM_PROG, NLM_VERS4);
transp = svcudp_create(RPC_ANYSOCK);
if (transp == NULL) {
errx(1, "cannot create udp service.");
/* NOTREACHED */
}
if (!svc_register(transp, NLM_PROG, NLM_VERS,
nlm_prog_1, IPPROTO_UDP)) {
errx(1, "unable to register (NLM_PROG, NLM_VERS, udp).");
/* NOTREACHED */
}
if (!svc_register(transp, NLM_PROG, NLM_VERSX,
nlm_prog_3, IPPROTO_UDP)) {
errx(1, "unable to register (NLM_PROG, NLM_VERSX, udp).");
/* NOTREACHED */
}
if (!svc_register(transp, NLM_PROG, NLM_VERS4,
nlm_prog_4, IPPROTO_UDP)) {
errx(1, "unable to register (NLM_PROG, NLM_VERS4, udp).");
/* NOTREACHED */
}
transp = svctcp_create(RPC_ANYSOCK, 0, 0);
if (transp == NULL) {
errx(1, "cannot create tcp service.");
/* NOTREACHED */
}
if (!svc_register(transp, NLM_PROG, NLM_VERS,
nlm_prog_1, IPPROTO_TCP)) {
errx(1, "unable to register (NLM_PROG, NLM_VERS, tcp).");
/* NOTREACHED */
}
if (!svc_register(transp, NLM_PROG, NLM_VERSX,
nlm_prog_3, IPPROTO_TCP)) {
errx(1, "unable to register (NLM_PROG, NLM_VERSX, tcp).");
/* NOTREACHED */
}
if (!svc_register(transp, NLM_PROG, NLM_VERS4,
nlm_prog_4, IPPROTO_TCP)) {
errx(1, "unable to register (NLM_PROG, NLM_VERS4, tcp).");
/* NOTREACHED */
}
/*
* Note that it is NOT sensible to run this program from inetd - the
* protocol assumes that it will run immediately at boot time.
*/
if (daemon(0, 0)) {
err(1, "cannot fork");
/* NOTREACHED */
}
pidfile(NULL);
openlog("rpc.lockd", 0, LOG_DAEMON);
if (debug_level)
syslog(LOG_INFO, "Starting, debug level %d", debug_level);
else
syslog(LOG_INFO, "Starting");
svc_run(); /* Should never return */
exit(1);
}