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/* $OpenBSD: lockd.c,v 1.14 2015/04/18 18:28:38 deraadt Exp $ */ |
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/* |
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* Copyright (c) 1995 |
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* A.R. Gordon (andrew.gordon@net-tel.co.uk). All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed for the FreeBSD project |
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* 4. Neither the name of the author nor the names of any co-contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY ANDREW GORDON AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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*/ |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <rpc/rpc.h> |
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#include <rpc/pmap_clnt.h> |
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#include <rpcsvc/sm_inter.h> |
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#include "nlm_prot.h" |
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#include <arpa/inet.h> |
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#include <stdio.h> |
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#include <syslog.h> |
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#include <stdlib.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <signal.h> |
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#include <limits.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <netdb.h> |
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#include "lockd.h" |
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int debug_level = 0; /* 0 = no debugging syslog() calls */ |
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int _rpcsvcdirty = 0; |
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int grace_expired; |
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void nlm_prog_0(struct svc_req *, SVCXPRT *); |
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void nlm_prog_1(struct svc_req *, SVCXPRT *); |
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void nlm_prog_3(struct svc_req *, SVCXPRT *); |
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void nlm_prog_4(struct svc_req *, SVCXPRT *); |
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static void sigalarm_handler(int); |
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static void usage(void); |
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int |
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main(int argc, char *argv[]) |
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{ |
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SVCXPRT *transp; |
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const char *errstr; |
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int ch; |
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struct sigaction sigchild, sigalarm; |
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int grace_period = 30; |
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while ((ch = getopt(argc, argv, "d:g:")) != (-1)) { |
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switch (ch) { |
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case 'd': |
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debug_level = strtonum(optarg, 1, INT_MAX, &errstr); |
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if (errstr) { |
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usage(); |
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/* NOTREACHED */ |
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} |
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break; |
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case 'g': |
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grace_period = strtonum(optarg, 1, INT_MAX, &errstr); |
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if (errstr) { |
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usage(); |
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/* NOTREACHED */ |
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} |
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break; |
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default: |
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case '?': |
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usage(); |
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/* NOTREACHED */ |
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} |
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} |
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(void) pmap_unset(NLM_PROG, NLM_SM); |
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(void) pmap_unset(NLM_PROG, NLM_VERS); |
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(void) pmap_unset(NLM_PROG, NLM_VERSX); |
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(void) pmap_unset(NLM_PROG, NLM_VERS4); |
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transp = svcudp_create(RPC_ANYSOCK); |
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if (transp == NULL) { |
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fprintf(stderr, "cannot create udp service.\n"); |
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exit(1); |
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} |
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if (!svc_register(transp, NLM_PROG, NLM_SM, |
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(void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_0, IPPROTO_UDP)) { |
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fprintf(stderr, "unable to register (NLM_PROG, NLM_SM, udp).\n"); |
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exit(1); |
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} |
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if (!svc_register(transp, NLM_PROG, NLM_VERS, |
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(void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_1, IPPROTO_UDP)) { |
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fprintf(stderr, "unable to register (NLM_PROG, NLM_VERS, udp).\n"); |
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exit(1); |
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} |
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if (!svc_register(transp, NLM_PROG, NLM_VERSX, |
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(void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_3, IPPROTO_UDP)) { |
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fprintf(stderr, "unable to register (NLM_PROG, NLM_VERSX, udp).\n"); |
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exit(1); |
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} |
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if (!svc_register(transp, NLM_PROG, NLM_VERS4, |
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(void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_4, IPPROTO_UDP)) { |
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fprintf(stderr, "unable to register (NLM_PROG, NLM_VERS4, udp).\n"); |
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exit(1); |
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} |
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transp = svctcp_create(RPC_ANYSOCK, 0, 0); |
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if (transp == NULL) { |
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fprintf(stderr, "cannot create tcp service.\n"); |
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exit(1); |
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} |
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if (!svc_register(transp, NLM_PROG, NLM_VERS, |
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(void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_1, IPPROTO_TCP)) { |
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fprintf(stderr, "unable to register (NLM_PROG, NLM_VERS, tcp).\n"); |
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exit(1); |
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} |
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if (!svc_register(transp, NLM_PROG, NLM_VERSX, |
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(void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_3, IPPROTO_TCP)) { |
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fprintf(stderr, "unable to register (NLM_PROG, NLM_VERSX, tcp).\n"); |
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exit(1); |
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} |
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if (!svc_register(transp, NLM_PROG, NLM_VERS4, |
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(void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_4, IPPROTO_TCP)) { |
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fprintf(stderr, "unable to register (NLM_PROG, NLM_VERS4, tcp).\n"); |
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exit(1); |
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} |
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/* |
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* Note that it is NOT sensible to run this program from inetd - the |
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* protocol assumes that it will run immediately at boot time. |
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*/ |
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if (daemon(0, 0) == -1) { |
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err(1, "cannot fork"); |
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/* NOTREACHED */ |
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} |
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openlog("rpc.lockd", 0, LOG_DAEMON); |
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if (debug_level) |
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syslog(LOG_INFO, "Starting, debug level %d", debug_level); |
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else |
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syslog(LOG_INFO, "Starting"); |
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sigchild.sa_handler = sigchild_handler; |
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sigemptyset(&sigchild.sa_mask); |
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sigchild.sa_flags = SA_RESTART; |
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if (sigaction(SIGCHLD, &sigchild, NULL) != 0) { |
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syslog(LOG_WARNING, "sigaction(SIGCHLD) failed (%m)"); |
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exit(1); |
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} |
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sigalarm.sa_handler = sigalarm_handler; |
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sigemptyset(&sigalarm.sa_mask); |
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sigalarm.sa_flags = SA_RESETHAND; /* should only happen once */ |
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sigalarm.sa_flags |= SA_RESTART; |
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if (sigaction(SIGALRM, &sigalarm, NULL) != 0) { |
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syslog(LOG_WARNING, "sigaction(SIGALRM) failed (%m)"); |
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exit(1); |
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} |
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grace_expired = 0; |
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if (alarm(10) == (unsigned int)-1) { |
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syslog(LOG_WARNING, "alarm failed (%m)"); |
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exit(1); |
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} |
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svc_run(); /* Should never return */ |
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return 1; |
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} |
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static void |
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/*ARGSUSED*/ |
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sigalarm_handler(int s) |
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{ |
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grace_expired = 1; |
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} |
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static void |
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usage() |
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{ |
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errx(1, "usage: rpc.lockd [-d [debug_level]] [-g grace_period]"); |
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} |