1 /* $NetBSD: lockd.c,v 1.2 1997/10/18 04:01:18 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1995 5 * A.R. Gordon (andrew.gordon@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 #include <sys/cdefs.h> 37 #ifndef lint 38 __RCSID("$NetBSD: lockd.c,v 1.2 1997/10/18 04:01:18 lukem Exp $"); 39 #endif 40 41 /* 42 * main() function for NFS lock daemon. Most of the code in this 43 * file was generated by running rpcgen /usr/include/rpcsvc/nlm_prot.x. 44 * 45 * The actual program logic is in the file procs.c 46 */ 47 48 #include <err.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <syslog.h> 52 #include <unistd.h> 53 54 #include <rpc/rpc.h> 55 #include <rpcsvc/sm_inter.h> 56 57 #include "lockd.h" 58 #include "nlm_prot.h" 59 60 /* 61 * XXX - Actual locking is not implemented. Some notes from the FreeBSD 62 * rpc.lockd/handles.c: 63 * 64 * - Need to find all fds in use by a host and free them when host crashes 65 * (need not be efficient) 66 * - Need to find fd corresponding to <inode, device> 67 */ 68 69 typedef struct fdinfo { 70 int fd; /* The file descriptor itself */ 71 int ref_count; /* Count of hosts using the fd - fd is 72 closed when this reaches zero */ 73 ino_t inode_no; /* The inode number of this file. */ 74 dev_t device; /* device on which the file lives. */ 75 struct fdinfo *next; /* Chain of FdInfo structures */ 76 struct fdinfo *prev; 77 } FdInfo; 78 79 int debug_level = 0; /* 0 = no debugging syslog() calls */ 80 int _rpcsvcdirty = 0; 81 82 int main __P((int, char **)); 83 void nlm_prog_1 __P((struct svc_req *, SVCXPRT *)); 84 void nlm_prog_3 __P((struct svc_req *, SVCXPRT *)); 85 86 int 87 main(argc, argv) 88 int argc; 89 char **argv; 90 { 91 SVCXPRT *transp; 92 int ch; 93 94 while ((ch = getopt(argc, argv, "d:")) != (-1)) { 95 switch (ch) { 96 case 'd': 97 debug_level = atoi(optarg); 98 if (!debug_level) { 99 errx(1, "usage: rpc.lockd [-d <debuglevel>]"); 100 /* NOTREACHED */ 101 } 102 break; 103 default: 104 case '?': 105 errx(1, "usage: rpc.lockd [-d <debuglevel>]"); 106 /* NOTREACHED */ 107 } 108 } 109 110 (void)pmap_unset(NLM_PROG, NLM_VERS); 111 (void)pmap_unset(NLM_PROG, NLM_VERSX); 112 113 transp = svcudp_create(RPC_ANYSOCK); 114 if (transp == NULL) { 115 errx(1, "cannot create udp service."); 116 /* NOTREACHED */ 117 } 118 if (!svc_register(transp, NLM_PROG, NLM_VERS, 119 nlm_prog_1, IPPROTO_UDP)) { 120 errx(1, "unable to register (NLM_PROG, NLM_VERS, udp)."); 121 /* NOTREACHED */ 122 } 123 if (!svc_register(transp, NLM_PROG, NLM_VERSX, 124 nlm_prog_3, IPPROTO_UDP)) { 125 errx(1, "unable to register (NLM_PROG, NLM_VERSX, udp)."); 126 /* NOTREACHED */ 127 } 128 transp = svctcp_create(RPC_ANYSOCK, 0, 0); 129 if (transp == NULL) { 130 errx(1, "cannot create tcp service."); 131 /* NOTREACHED */ 132 } 133 if (!svc_register(transp, NLM_PROG, NLM_VERS, 134 nlm_prog_1, IPPROTO_TCP)) { 135 errx(1, "unable to register (NLM_PROG, NLM_VERS, tcp)."); 136 /* NOTREACHED */ 137 } 138 if (!svc_register(transp, NLM_PROG, NLM_VERSX, 139 nlm_prog_3, IPPROTO_TCP)) { 140 errx(1, "unable to register (NLM_PROG, NLM_VERSX, tcp)."); 141 /* NOTREACHED */ 142 } 143 144 /* 145 * Note that it is NOT sensible to run this program from inetd - the 146 * protocol assumes that it will run immediately at boot time. 147 */ 148 if (daemon(0, 0)) { 149 err(1, "cannot fork"); 150 /* NOTREACHED */ 151 } 152 153 openlog("rpc.lockd", 0, LOG_DAEMON); 154 if (debug_level) 155 syslog(LOG_INFO, "Starting, debug level %d", debug_level); 156 else 157 syslog(LOG_INFO, "Starting"); 158 159 svc_run(); /* Should never return */ 160 exit(1); 161 } 162