lockd.c revision 1.5
1 /* $NetBSD: lockd.c,v 1.5 2000/06/07 14:34:40 bouyer 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 #include <sys/cdefs.h> 37 #ifndef lint 38 __RCSID("$NetBSD: lockd.c,v 1.5 2000/06/07 14:34:40 bouyer 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 lock_proc.c 46 */ 47 48 #include <err.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <errno.h> 52 #include <syslog.h> 53 #include <signal.h> 54 #include <string.h> 55 #include <unistd.h> 56 #include <util.h> 57 58 #include <rpc/rpc.h> 59 #include <rpcsvc/sm_inter.h> 60 61 #include "lockd.h" 62 #include "nlm_prot.h" 63 64 int debug_level = 0; /* 0 = no debugging syslog() calls */ 65 int _rpcsvcdirty = 0; 66 67 int grace_expired; 68 69 int main __P((int, char **)); 70 void nlm_prog_0 __P((struct svc_req *, SVCXPRT *)); 71 void nlm_prog_1 __P((struct svc_req *, SVCXPRT *)); 72 void nlm_prog_3 __P((struct svc_req *, SVCXPRT *)); 73 void nlm_prog_4 __P((struct svc_req *, SVCXPRT *)); 74 void usage __P((void)); 75 76 void sigalarm_handler __P((int)); 77 78 int 79 main(argc, argv) 80 int argc; 81 char **argv; 82 { 83 SVCXPRT *transp; 84 int ch; 85 struct sigaction sigchild, sigalarm; 86 int grace_period = 30; 87 88 while ((ch = getopt(argc, argv, "d:g:")) != (-1)) { 89 switch (ch) { 90 case 'd': 91 debug_level = atoi(optarg); 92 if (!debug_level) { 93 usage(); 94 /* NOTREACHED */ 95 } 96 break; 97 case 'g': 98 grace_period = atoi(optarg); 99 if (!grace_period) { 100 usage(); 101 /* NOTREACHED */ 102 } 103 break; 104 default: 105 case '?': 106 usage(); 107 /* NOTREACHED */ 108 } 109 } 110 111 (void)pmap_unset(NLM_PROG, NLM_SM); 112 (void)pmap_unset(NLM_PROG, NLM_VERS); 113 (void)pmap_unset(NLM_PROG, NLM_VERSX); 114 (void)pmap_unset(NLM_PROG, NLM_VERS4); 115 116 transp = svcudp_create(RPC_ANYSOCK); 117 if (transp == NULL) { 118 errx(1, "cannot create udp service."); 119 /* NOTREACHED */ 120 } 121 if (!svc_register(transp, NLM_PROG, NLM_SM, 122 nlm_prog_0, IPPROTO_UDP)) { 123 errx(1, "unable to register (NLM_PROG, NLM_SM, udp)."); 124 /* NOTREACHED */ 125 } 126 if (!svc_register(transp, NLM_PROG, NLM_VERS, 127 nlm_prog_1, IPPROTO_UDP)) { 128 errx(1, "unable to register (NLM_PROG, NLM_VERS, udp)."); 129 /* NOTREACHED */ 130 } 131 if (!svc_register(transp, NLM_PROG, NLM_VERSX, 132 nlm_prog_3, IPPROTO_UDP)) { 133 errx(1, "unable to register (NLM_PROG, NLM_VERSX, udp)."); 134 /* NOTREACHED */ 135 } 136 if (!svc_register(transp, NLM_PROG, NLM_VERS4, 137 nlm_prog_4, IPPROTO_UDP)) { 138 errx(1, "unable to register (NLM_PROG, NLM_VERS4, udp)."); 139 /* NOTREACHED */ 140 } 141 transp = svctcp_create(RPC_ANYSOCK, 0, 0); 142 if (transp == NULL) { 143 errx(1, "cannot create tcp service."); 144 /* NOTREACHED */ 145 } 146 if (!svc_register(transp, NLM_PROG, NLM_VERS, 147 nlm_prog_1, IPPROTO_TCP)) { 148 errx(1, "unable to register (NLM_PROG, NLM_VERS, tcp)."); 149 /* NOTREACHED */ 150 } 151 if (!svc_register(transp, NLM_PROG, NLM_VERSX, 152 nlm_prog_3, IPPROTO_TCP)) { 153 errx(1, "unable to register (NLM_PROG, NLM_VERSX, tcp)."); 154 /* NOTREACHED */ 155 } 156 if (!svc_register(transp, NLM_PROG, NLM_VERS4, 157 nlm_prog_4, IPPROTO_TCP)) { 158 errx(1, "unable to register (NLM_PROG, NLM_VERS4, tcp)."); 159 /* NOTREACHED */ 160 } 161 162 /* 163 * Note that it is NOT sensible to run this program from inetd - the 164 * protocol assumes that it will run immediately at boot time. 165 */ 166 if (daemon(0, 0)) { 167 err(1, "cannot fork"); 168 /* NOTREACHED */ 169 } 170 pidfile(NULL); 171 172 openlog("rpc.lockd", 0, LOG_DAEMON); 173 if (debug_level) 174 syslog(LOG_INFO, "Starting, debug level %d", debug_level); 175 else 176 syslog(LOG_INFO, "Starting"); 177 178 sigchild.sa_handler = sigchild_handler; 179 sigemptyset(&sigchild.sa_mask); 180 sigchild.sa_flags = SA_RESTART; 181 if (sigaction(SIGCHLD, &sigchild, NULL) != 0) { 182 syslog(LOG_WARNING, "sigaction(SIGCHLD) failed: %s", 183 strerror(errno)); 184 exit(1); 185 } 186 sigalarm.sa_handler = sigalarm_handler; 187 sigemptyset(&sigalarm.sa_mask); 188 sigalarm.sa_flags = SA_RESETHAND; /* should only happen once */ 189 sigalarm.sa_flags |= SA_RESTART; 190 if (sigaction(SIGALRM, &sigalarm, NULL) != 0) { 191 syslog(LOG_WARNING, "sigaction(SIGALRM) failed: %s", 192 strerror(errno)); 193 exit(1); 194 } 195 grace_expired = 0; 196 if (alarm(10) < 0) { 197 syslog(LOG_WARNING, "alarm failed: %s", 198 strerror(errno)); 199 exit(1); 200 } 201 202 svc_run(); /* Should never return */ 203 exit(1); 204 } 205 206 void 207 sigalarm_handler(s) 208 int s; 209 { 210 grace_expired = 1; 211 } 212 213 void 214 usage() 215 { 216 errx(1, "usage: rpc.lockd [-d <debuglevel>] [-g <grace period>]"); 217 } 218
Indexes created Wed Sep 24 05:09:52 GMT 2025