/* $NetBSD: lockd.c,v 1.7 2000/08/12 18:08:44 thorpej Exp $ */ /* $FreeBSD$ */ /* * 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 #ifndef lint __RCSID("$NetBSD: lockd.c,v 1.7 2000/08/12 18:08:44 thorpej 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 lock_proc.c */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "lockd.h" #include int debug_level = 0; /* 0 = no debugging syslog() calls */ int _rpcsvcdirty = 0; int grace_expired; int nsm_state; pid_t client_pid; struct mon mon_host; void init_nsm(void); void nlm_prog_0(struct svc_req *, SVCXPRT *); void nlm_prog_1(struct svc_req *, SVCXPRT *); void nlm_prog_3(struct svc_req *, SVCXPRT *); void nlm_prog_4(struct svc_req *, SVCXPRT *); void usage(void); void sigalarm_handler(void); const char *transports[] = { "udp", "tcp", "udp6", "tcp6" }; int main(argc, argv) int argc; char **argv; { SVCXPRT *transp; int ch, i, maxindex, s; struct sigaction sigalarm; int grace_period = 30; struct netconfig *nconf; while ((ch = getopt(argc, argv, "d:g:")) != (-1)) { switch (ch) { case 'd': debug_level = atoi(optarg); if (!debug_level) { usage(); /* NOTREACHED */ } break; case 'g': grace_period = atoi(optarg); if (!grace_period) { usage(); /* NOTREACHED */ } break; default: case '?': usage(); /* NOTREACHED */ } } if (geteuid()) { /* This command allowed only to root */ fprintf(stderr, "Sorry. You are not superuser\n"); exit(1); } (void)rpcb_unset(NLM_PROG, NLM_SM, NULL); (void)rpcb_unset(NLM_PROG, NLM_VERS, NULL); (void)rpcb_unset(NLM_PROG, NLM_VERSX, NULL); (void)rpcb_unset(NLM_PROG, NLM_VERS4, NULL); /* * Check if IPv6 support is present. */ s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); if (s < 0) maxindex = 2; else { close(s); maxindex = 4; } for (i = 0; i < maxindex; i++) { nconf = getnetconfigent(transports[i]); if (nconf == NULL) errx(1, "cannot get udp netconf."); transp = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0); if (transp == NULL) { errx(1, "cannot create %s service.", transports[i]); /* NOTREACHED */ } if (!svc_reg(transp, NLM_PROG, NLM_SM, nlm_prog_0, nconf)) { errx(1, "unable to register (NLM_PROG, NLM_SM, %s)", transports[i]); /* NOTREACHED */ } if (!svc_reg(transp, NLM_PROG, NLM_VERS, nlm_prog_1, nconf)) { errx(1, "unable to register (NLM_PROG, NLM_VERS, %s)", transports[i]); /* NOTREACHED */ } if (!svc_reg(transp, NLM_PROG, NLM_VERSX, nlm_prog_3, nconf)) { errx(1, "unable to register (NLM_PROG, NLM_VERSX, %s)", transports[i]); /* NOTREACHED */ } if (!svc_reg(transp, NLM_PROG, NLM_VERS4, nlm_prog_4, nconf)) { errx(1, "unable to register (NLM_PROG, NLM_VERS4, %s)", transports[i]); /* NOTREACHED */ } freenetconfigent(nconf); } /* * 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 */ } openlog("rpc.lockd", 0, LOG_DAEMON); if (debug_level) syslog(LOG_INFO, "Starting, debug level %d", debug_level); else syslog(LOG_INFO, "Starting"); sigalarm.sa_handler = (sig_t) sigalarm_handler; sigemptyset(&sigalarm.sa_mask); sigalarm.sa_flags = SA_RESETHAND; /* should only happen once */ sigalarm.sa_flags |= SA_RESTART; if (sigaction(SIGALRM, &sigalarm, NULL) != 0) { syslog(LOG_WARNING, "sigaction(SIGALRM) failed: %s", strerror(errno)); exit(1); } grace_expired = 0; alarm(10); init_nsm(); client_pid = client_request(); svc_run(); /* Should never return */ exit(1); } void sigalarm_handler(void) { grace_expired = 1; } void usage() { errx(1, "usage: rpc.lockd [-d ] [-g ]"); } /* * init_nsm -- * Reset the NSM state-of-the-world and acquire its state. */ void init_nsm(void) { enum clnt_stat ret; my_id id; sm_stat stat; char name[] = "NFS NLM"; char localhost[] = "localhost"; /* * !!! * The my_id structure isn't used by the SM_UNMON_ALL call, as far * as I know. Leave it empty for now. */ memset(&id, 0, sizeof(id)); id.my_name = name; /* * !!! * The statd program must already be registered when lockd runs. */ do { ret = callrpc("localhost", SM_PROG, SM_VERS, SM_UNMON_ALL, xdr_my_id, &id, xdr_sm_stat, &stat); if (ret == RPC_PROGUNAVAIL) { warnx("%lu %s", SM_PROG, clnt_sperrno(ret)); sleep(2); continue; } break; } while (0); if (ret != 0) { errx(1, "%lu %s", SM_PROG, clnt_sperrno(ret)); } nsm_state = stat.state; /* setup constant data for SM_MON calls */ mon_host.mon_id.my_id.my_name = localhost; mon_host.mon_id.my_id.my_prog = NLM_PROG; mon_host.mon_id.my_id.my_vers = NLM_SM; mon_host.mon_id.my_id.my_proc = NLM_SM_NOTIFY; /* bsdi addition */ }