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lockd.c revision 1.1 
      1 /*	$NetBSD: lockd.c,v 1.1 1997/03/10 06:26:20 scottr Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995
      5  *	A.R. Gordon (andrew.gordon (at) net-tel.co.uk).  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed for the FreeBSD project
     18  * 4. Neither the name of the author nor the names of any co-contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY ANDREW GORDON AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  */
     35 
     36 
     37 /*
     38  * main() function for NFS lock daemon.  Most of the code in this
     39  * file was generated by running rpcgen /usr/include/rpcsvc/nlm_prot.x.
     40  *
     41  * The actual program logic is in the file procs.c
     42  */
     43 
     44 #include <stdio.h>
     45 #include <syslog.h>
     46 
     47 #include <rpc/rpc.h>
     48 #include <rpcsvc/sm_inter.h>
     49 
     50 #include "lockd.h"
     51 #include "nlm_prot.h"
     52 
     53 /*
     54  * XXX - Actual locking is not implemented.  Some notes from the FreeBSD
     55  * rpc.lockd/handles.c:
     56  *
     57  * - Need to find all fds in use by a host and free them when host crashes
     58  *   (need not be efficient)
     59  * - Need to find fd corresponding to <inode, device>
     60  */
     61 
     62 typedef struct fdinfo {
     63 	int	fd;		/* The file descriptor itself */
     64 	int	ref_count;	/* Count of hosts using the fd - fd is
     65 				   closed when this reaches zero */
     66 	ino_t	inode_no;	/* The inode number of this file. */
     67 	dev_t	device;		/* device on which the file lives. */
     68 	struct fdinfo	*next;	/* Chain of FdInfo structures */
     69 	struct fdinfo	*prev;
     70 }       FdInfo;
     71 
     72 int		debug_level = 0;	/* 0 = no debugging syslog() calls */
     73 int		_rpcsvcdirty = 0;
     74 
     75 void	nlm_prog_1 __P((struct svc_req *, SVCXPRT *));
     76 void	nlm_prog_3 __P((struct svc_req *, SVCXPRT *));
     77 
     78 main(argc, argv)
     79 	int argc;
     80 	char **argv;
     81 {
     82 	extern char *optarg;
     83 	SVCXPRT *transp;
     84 	int ch;
     85 
     86 	while ((ch = getopt(argc, argv, "d:")) != (-1)) {
     87 		switch (ch) {
     88 		case 'd':
     89 			debug_level = atoi(optarg);
     90 			if (!debug_level) {
     91 				errx(1, "usage: rpc.lockd [-d <debuglevel>]");
     92 				/* NOTREACHED */
     93 			}
     94 			break;
     95 		default:
     96 		case '?':
     97 			errx(1, "usage: rpc.lockd [-d <debuglevel>]");
     98 			/* NOTREACHED */
     99 		}
    100 	}
    101 
    102 	(void)pmap_unset(NLM_PROG, NLM_VERS);
    103 	(void)pmap_unset(NLM_PROG, NLM_VERSX);
    104 
    105 	transp = svcudp_create(RPC_ANYSOCK);
    106 	if (transp == NULL) {
    107 		errx(1, "cannot create udp service.");
    108 		/* NOTREACHED */
    109 	}
    110 	if (!svc_register(transp, NLM_PROG, NLM_VERS,
    111 	    nlm_prog_1, IPPROTO_UDP)) {
    112 		errx(1, "unable to register (NLM_PROG, NLM_VERS, udp).");
    113 		/* NOTREACHED */
    114 	}
    115 	if (!svc_register(transp, NLM_PROG, NLM_VERSX,
    116 	    nlm_prog_3, IPPROTO_UDP)) {
    117 		errx(1, "unable to register (NLM_PROG, NLM_VERSX, udp).");
    118 		/* NOTREACHED */
    119 	}
    120 	transp = svctcp_create(RPC_ANYSOCK, 0, 0);
    121 	if (transp == NULL) {
    122 		errx(1, "cannot create tcp service.");
    123 		/* NOTREACHED */
    124 	}
    125 	if (!svc_register(transp, NLM_PROG, NLM_VERS,
    126 	    nlm_prog_1, IPPROTO_TCP)) {
    127 		errx(1, "unable to register (NLM_PROG, NLM_VERS, tcp).");
    128 		/* NOTREACHED */
    129 	}
    130 	if (!svc_register(transp, NLM_PROG, NLM_VERSX,
    131 	    nlm_prog_3, IPPROTO_TCP)) {
    132 		errx(1, "unable to register (NLM_PROG, NLM_VERSX, tcp).");
    133 		/* NOTREACHED */
    134 	}
    135 
    136 	/*
    137 	 * Note that it is NOT sensible to run this program from inetd - the
    138 	 * protocol assumes that it will run immediately at boot time.
    139 	 */
    140 	if (daemon(0, 0)) {
    141 		err(1, "cannot fork");
    142 		/* NOTREACHED */
    143 	}
    144 
    145 	openlog("rpc.lockd", 0, LOG_DAEMON);
    146 	if (debug_level)
    147 		syslog(LOG_INFO, "Starting, debug level %d", debug_level);
    148 	else
    149 		syslog(LOG_INFO, "Starting");
    150 
    151 	svc_run();		/* Should never return */
    152 	exit(1);
    153 }
    154