/* $NetBSD: rpcbind.c,v 1.3 2002/11/08 00:16:40 fvdl Exp $ */ /* $FreeBSD: src/usr.sbin/rpcbind/rpcbind.c,v 1.12 2003/10/29 09:31:41 mbr Exp $ */ /* * Copyright (c) 2009, Sun Microsystems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - 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. * - Neither the name of Sun Microsystems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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. */ /* * Copyright (c) 1984 - 1991 by Sun Microsystems, Inc. */ /* * rpcbind.c * Implements the program, version to address mapping for rpc. * */ #include #include #include #include #include #include #include #include #include #include #include #include #ifdef PORTMAP #include #endif #include #ifdef SYSTEMD #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_NSS_H #include #else static inline void __nss_configure_lookup(const char *db, const char *s) {} #endif #include "rpcbind.h" #include "xlog.h" /*#define RPCBIND_DEBUG*/ /* Global variables */ int debugging = 0; /* Tell me what's going on */ int doabort = 0; /* When debugging, do an abort on errors */ int dofork = 1; /* fork? */ int createdsocket = 0; /* Did I create the socket or systemd did it for me? */ rpcblist_ptr list_rbl; /* A list of version 3/4 rpcbind services */ #ifdef RPCBIND_USER char *rpcbinduser = RPCBIND_USER; #else char *rpcbinduser = NULL; #endif #ifdef NSS_MODULES char *nss_modules = NSS_MODULES; #else char *nss_modules = "files"; #endif /* who to suid to if -s is given */ #define RUN_AS "daemon" #define RPCBINDDLOCK "/var/run/rpcbind.lock" int runasdaemon = 0; int insecure = 0; int oldstyle_local = 0; int verboselog = 0; char **hosts = NULL; int nhosts = 0; int on = 1; int rpcbindlockfd; #ifdef LIB_SET_DEBUG void libtirpc_set_debug(char *name, int level, int use_stderr); #endif #ifdef WARMSTART /* Local Variable */ static int warmstart = 0; /* Grab an old copy of registrations. */ #endif #ifdef PORTMAP struct pmaplist *list_pml; /* A list of version 2 rpcbind services */ char *udptrans; /* Name of UDP transport */ char *tcptrans; /* Name of TCP transport */ char *udp_uaddr; /* Universal UDP address */ char *tcp_uaddr; /* Universal TCP address */ #endif static char servname[] = "rpcbind"; static char superuser[] = "superuser"; int main(int, char *[]); static int init_transport(struct netconfig *); static void rbllist_add(rpcprog_t, rpcvers_t, struct netconfig *, struct netbuf *); static void terminate(int); static void parseargs(int, char *[]); int main(int argc, char *argv[]) { struct netconfig *nconf; void *nc_handle; /* Net config handle */ struct rlimit rl; int maxrec = RPC_MAXDATASIZE; parseargs(argc, argv); /* Check that another rpcbind isn't already running. */ if ((rpcbindlockfd = (open(RPCBINDDLOCK, O_RDONLY|O_CREAT, 0444))) == -1) err(1, "%s", RPCBINDDLOCK); if(flock(rpcbindlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) errx(1, "another rpcbind is already running. Aborting"); getrlimit(RLIMIT_NOFILE, &rl); if (rl.rlim_cur < 128) { if (rl.rlim_max <= 128) rl.rlim_cur = rl.rlim_max; else rl.rlim_cur = 128; setrlimit(RLIMIT_NOFILE, &rl); } if (geteuid()) { /* This command allowed only to root */ fprintf(stderr, "Sorry. You are not superuser\n"); exit(1); } /* * Make sure we use the local service file * for service lookkups */ __nss_configure_lookup("services", nss_modules); nc_handle = setnetconfig(); /* open netconfig file */ if (nc_handle == NULL) { syslog(LOG_ERR, "could not read /etc/netconfig"); exit(1); } nconf = getnetconfigent("local"); if (nconf == NULL) nconf = getnetconfigent("unix"); if (nconf == NULL) { syslog(LOG_ERR, "%s: can't find local transport\n", argv[0]); exit(1); } xlog_open("rpcbind"); if (dofork) { xlog_syslog(TRUE); xlog_stderr(FALSE); } else { xlog_syslog(FALSE); xlog_stderr(TRUE); } if (debugging) { xlog_config(D_ALL, 1); #ifdef LIB_SET_DEBUG libtirpc_set_debug("rpcbind", debugging, (dofork == 0)); #endif } rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec); init_transport(nconf); while ((nconf = getnetconfig(nc_handle))) { if (nconf->nc_flag & NC_VISIBLE) init_transport(nconf); } endnetconfig(nc_handle); #ifdef PORTMAP if (!udptrans) udptrans = ""; if (!tcptrans) tcptrans = ""; #endif /* catch the usual termination signals for graceful exit */ (void) signal(SIGCHLD, reap); (void) signal(SIGINT, terminate); (void) signal(SIGTERM, terminate); (void) signal(SIGQUIT, terminate); /* ignore others that could get sent */ (void) signal(SIGPIPE, SIG_IGN); (void) signal(SIGHUP, SIG_IGN); (void) signal(SIGUSR1, SIG_IGN); (void) signal(SIGUSR2, SIG_IGN); #ifdef RPCBIND_DEBUG if (debugging) { xlog(LOG_DEBUG, "debugging enabled."); if (doabort) xlog(LOG_DEBUG, "Will abort on errors!\n"); } #endif if (dofork) { if (daemon(0, 0)) err(1, "fork failed"); } if (runasdaemon || rpcbinduser) { struct passwd *p; char *id = runasdaemon ? RUN_AS : rpcbinduser; /* * Make sure we use the local password file * for these lookups. */ __nss_configure_lookup("passwd", nss_modules); if((p = getpwnam(id)) == NULL) { syslog(LOG_ERR, "cannot get uid of '%s': %m", id); exit(1); } #ifdef WARMSTART if (warmstart) { mkdir_warmstart(p->pw_uid); } #endif if (setgid(p->pw_gid) == -1) { syslog(LOG_ERR, "setgid to '%s' (%d) failed: %m", id, p->pw_gid); exit(1); } if (setgroups(0, NULL) == -1) { syslog(LOG_ERR, "dropping supplemental groups failed: %m"); exit(1); } if (setuid(p->pw_uid) == -1) { syslog(LOG_ERR, "setuid to '%s' (%d) failed: %m", id, p->pw_uid); exit(1); } } #ifdef WARMSTART if (warmstart) { read_warmstart(); } #endif network_init(); #ifdef SYSTEMD /* Try to notify system of successful startup, regardless of whether we * used systemd socket activation or not. When started from the command * line, this should not hurt either. */ sd_notify(0, "READY=1"); #endif my_svc_run(); syslog(LOG_ERR, "svc_run returned unexpectedly"); rpcbind_abort(); /* NOTREACHED */ return 0; } /* * Normally systemd will open sockets in dual ipv4/ipv6 mode. * That won't work with netconfig and we'll only match * the ipv6 socket. Convert it to IPV6_V6ONLY and issue * a warning for the user to fix their systemd config. */ static int handle_ipv6_socket(int fd) { int opt; socklen_t len = sizeof(opt); if (getsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &opt, &len)) { syslog(LOG_ERR, "failed to get ipv6 socket opts: %m"); return -1; } if (opt) /* socket is already in V6ONLY mode */ return 0; syslog(LOG_ERR, "systemd has passed an IPv4/IPv6 dual-mode socket."); syslog(LOG_ERR, "Please fix your systemd config by specifying IPv4 and IPv6 sockets separately and using BindIPv6Only=ipv6-only."); return -1; } /* * Adds the entry into the rpcbind database. * If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also * Returns 0 if succeeds, else fails */ static int init_transport(struct netconfig *nconf) { int fd = -1; struct t_bind taddr; struct addrinfo hints, *res = NULL; struct __rpc_sockinfo si; SVCXPRT *my_xprt = NULL; int status; /* bound checking ? */ int aicode; int addrlen = 0; int nhostsbak; int checkbind; int on = 1; struct sockaddr *sa = NULL; u_int32_t host_addr[4]; /* IPv4 or IPv6 */ struct sockaddr_un sun; mode_t oldmask; int n; res = NULL; if ((nconf->nc_semantics != NC_TPI_CLTS) && (nconf->nc_semantics != NC_TPI_COTS) && (nconf->nc_semantics != NC_TPI_COTS_ORD)) return (1); /* not my type */ #ifdef RPCBIND_DEBUG if (debugging) { int i; char **s; (void) xlog(LOG_DEBUG, "%s: %ld lookup routines :\n", nconf->nc_netid, nconf->nc_nlookups); for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups; i++, s++) xlog(LOG_DEBUG, "[%d] - %s\n", i, *s); } #endif if (!__rpc_nconf2sockinfo(nconf, &si)) { syslog(LOG_ERR, "cannot get information for %s", nconf->nc_netid); return (1); } #ifdef SYSTEMD n = sd_listen_fds(0); if (n < 0) { syslog(LOG_ERR, "failed to acquire systemd sockets: %s", strerror(-n)); return 1; } /* Try to find if one of the systemd sockets we were given match * our netconfig structure. */ for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { struct __rpc_sockinfo si_other; union { struct sockaddr sa; struct sockaddr_un un; struct sockaddr_in in4; struct sockaddr_in6 in6; struct sockaddr_storage storage; } sa; socklen_t addrlen = sizeof(sa); if (!__rpc_fd2sockinfo(fd, &si_other)) { syslog(LOG_ERR, "cannot get information for fd %i", fd); return 1; } if (si.si_af != si_other.si_af || si.si_socktype != si_other.si_socktype || si.si_proto != si_other.si_proto) continue; if (getsockname(fd, &sa.sa, &addrlen) < 0) { syslog(LOG_ERR, "failed to query socket name: %s", strerror(errno)); goto error; } if (sa.sa.sa_family == AF_INET6 && handle_ipv6_socket(fd)) goto error; /* Copy the address */ taddr.addr.maxlen = taddr.addr.len = addrlen; taddr.addr.buf = malloc(addrlen); if (taddr.addr.buf == NULL) { syslog(LOG_ERR, "cannot allocate memory for %s address", nconf->nc_netid); goto error; } memcpy(taddr.addr.buf, &sa, addrlen); my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, RPC_MAXDATASIZE, RPC_MAXDATASIZE); if (my_xprt == (SVCXPRT *)NULL) { syslog(LOG_ERR, "%s: could not create service", nconf->nc_netid); goto error; } } /* * If none of the systemd sockets matched, we set up the socket in * the normal way: */ #endif if (my_xprt != NULL) goto got_socket; if ((strcmp(nconf->nc_netid, "local") == 0) || (strcmp(nconf->nc_netid, "unix") == 0)) { memset(&sun, 0, sizeof sun); sun.sun_family = AF_LOCAL; unlink(_PATH_RPCBINDSOCK); createdsocket = 1; /* We are now in the process of creating the unix socket */ strcpy(sun.sun_path, _PATH_RPCBINDSOCK); addrlen = SUN_LEN(&sun); sa = (struct sockaddr *)&sun; } else { /* Get rpcbind's address on this transport */ memset(&hints, 0, sizeof hints); hints.ai_flags = AI_PASSIVE; hints.ai_family = si.si_af; hints.ai_socktype = si.si_socktype; hints.ai_protocol = si.si_proto; } if (nconf->nc_semantics == NC_TPI_CLTS) { /* * If no hosts were specified, just bind to INADDR_ANY. Otherwise * make sure 127.0.0.1 is added to the list. */ nhostsbak = nhosts; nhostsbak++; hosts = realloc(hosts, nhostsbak * sizeof(char *)); if (nhostsbak == 1) hosts[0] = "*"; else { if (hints.ai_family == AF_INET) { hosts[nhostsbak - 1] = "127.0.0.1"; } else if (hints.ai_family == AF_INET6) { hosts[nhostsbak - 1] = "::1"; } else return 1; } /* * Bind to specific IPs if asked to */ checkbind = 0; while (nhostsbak > 0) { --nhostsbak; /* * XXX - using RPC library internal functions. */ if ((fd = __rpc_nconf2fd(nconf)) < 0) { syslog(LOG_ERR, "cannot create socket for %s", nconf->nc_netid); return (1); } hints.ai_flags &= ~AI_NUMERICHOST; switch (hints.ai_family) { case AF_INET: if (inet_pton(AF_INET, hosts[nhostsbak], host_addr) == 1) { hints.ai_flags |= AI_NUMERICHOST; } else { /* * Skip if we have an AF_INET6 adress. */ if (inet_pton(AF_INET6, hosts[nhostsbak], host_addr) == 1) continue; } break; case AF_INET6: if (inet_pton(AF_INET6, hosts[nhostsbak], host_addr) == 1) { hints.ai_flags |= AI_NUMERICHOST; } else { /* * Skip if we have an AF_INET adress. */ if (inet_pton(AF_INET, hosts[nhostsbak], host_addr) == 1) continue; } break; default: break; } /* * If no hosts were specified, just bind to INADDR_ANY */ if (strcmp("*", hosts[nhostsbak]) == 0) hosts[nhostsbak] = NULL; if ((aicode = getaddrinfo(hosts[nhostsbak], servname, &hints, &res)) != 0) { if ((aicode = getaddrinfo(hosts[nhostsbak], "portmapper", &hints, &res)) != 0) { syslog(LOG_ERR, "cannot get local address for %s: %s", nconf->nc_netid, gai_strerror(aicode)); continue; } } addrlen = res->ai_addrlen; sa = (struct sockaddr *)res->ai_addr; oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); if (bind(fd, sa, addrlen) != 0) { syslog(LOG_ERR, "cannot bind %s on %s: %m", (hosts[nhostsbak] == NULL) ? "*" : hosts[nhostsbak], nconf->nc_netid); if (res != NULL) freeaddrinfo(res); continue; } else checkbind++; (void) umask(oldmask); /* Copy the address */ taddr.addr.maxlen = taddr.addr.len = addrlen; taddr.addr.buf = malloc(addrlen); if (taddr.addr.buf == NULL) { syslog(LOG_ERR, "cannot allocate memory for %s address", nconf->nc_netid); if (res != NULL) freeaddrinfo(res); return 1; } memcpy(taddr.addr.buf, sa, addrlen); #ifdef RPCBIND_DEBUG if (debugging) { /* * for debugging print out our universal * address */ char *uaddr; struct netbuf nb; int sa_size = 0; nb.buf = sa; switch( sa->sa_family){ case AF_INET: sa_size = sizeof (struct sockaddr_in); break; case AF_INET6: sa_size = sizeof (struct sockaddr_in6); break; } nb.len = nb.maxlen = sa_size; uaddr = taddr2uaddr(nconf, &nb); (void) xlog(LOG_DEBUG, "rpcbind : my address is %s\n", uaddr); (void) free(uaddr); } #endif my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, RPC_MAXDATASIZE, RPC_MAXDATASIZE); if (my_xprt == (SVCXPRT *)NULL) { syslog(LOG_ERR, "%s: could not create service", nconf->nc_netid); goto error; } } if (!checkbind) return 1; } else { /* NC_TPI_COTS */ if ((fd = __rpc_nconf2fd(nconf)) < 0) { syslog(LOG_ERR, "cannot create socket for %s", nconf->nc_netid); return (1); } if ((strcmp(nconf->nc_netid, "local") != 0) && (strcmp(nconf->nc_netid, "unix") != 0)) { if ((aicode = getaddrinfo(NULL, servname, &hints, &res))!= 0) { if ((aicode = getaddrinfo(NULL, "portmapper", &hints, &res))!= 0) { printf("cannot get local address for %s: %s", nconf->nc_netid, gai_strerror(aicode)); syslog(LOG_ERR, "cannot get local address for %s: %s", nconf->nc_netid, gai_strerror(aicode)); return 1; } } addrlen = res->ai_addrlen; sa = (struct sockaddr *)res->ai_addr; } oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH); __rpc_fd2sockinfo(fd, &si); if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) != 0) { syslog(LOG_ERR, "cannot set SO_REUSEADDR on %s", nconf->nc_netid); if (res != NULL) freeaddrinfo(res); return 1; } if (bind(fd, sa, addrlen) < 0) { syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid); if (res != NULL) freeaddrinfo(res); return 1; } (void) umask(oldmask); /* Copy the address */ taddr.addr.len = taddr.addr.maxlen = addrlen; taddr.addr.buf = malloc(addrlen); if (taddr.addr.buf == NULL) { syslog(LOG_ERR, "cannot allocate memory for %s address", nconf->nc_netid); if (res != NULL) freeaddrinfo(res); return 1; } memcpy(taddr.addr.buf, sa, addrlen); #ifdef RPCBIND_DEBUG if (debugging) { /* for debugging print out our universal address */ char *uaddr; struct netbuf nb; int sa_size2 = 0; nb.buf = sa; switch( sa->sa_family){ case AF_INET: sa_size2 = sizeof (struct sockaddr_in); break; case AF_INET6: sa_size2 = sizeof (struct sockaddr_in6); break; } nb.len = nb.maxlen = sa_size2; uaddr = taddr2uaddr(nconf, &nb); (void) xlog(LOG_DEBUG, "rpcbind : my address is %s\n", uaddr); (void) free(uaddr); } #endif listen(fd, SOMAXCONN); my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr, RPC_MAXDATASIZE, RPC_MAXDATASIZE); if (my_xprt == (SVCXPRT *)NULL) { syslog(LOG_ERR, "%s: could not create service", nconf->nc_netid); goto error; } } got_socket: #ifdef PORTMAP /* * Register both the versions for tcp/ip, udp/ip. */ if (si.si_af == AF_INET && (si.si_proto == IPPROTO_TCP || si.si_proto == IPPROTO_UDP)) { struct pmaplist *pml; pml = malloc(sizeof (struct pmaplist)); if (pml == NULL) { syslog(LOG_ERR, "no memory!"); exit(1); } pml->pml_map.pm_prog = PMAPPROG; pml->pml_map.pm_vers = PMAPVERS; pml->pml_map.pm_port = PMAPPORT; pml->pml_map.pm_prot = si.si_proto; switch (si.si_proto) { case IPPROTO_TCP: tcptrans = strdup(nconf->nc_netid); break; case IPPROTO_UDP: udptrans = strdup(nconf->nc_netid); break; } pml->pml_next = list_pml; list_pml = pml; /* Add version 3 information */ pml = malloc(sizeof (struct pmaplist)); if (pml == NULL) { syslog(LOG_ERR, "no memory!"); exit(1); } pml->pml_map = list_pml->pml_map; pml->pml_map.pm_vers = RPCBVERS; pml->pml_next = list_pml; list_pml = pml; /* Add version 4 information */ pml = malloc (sizeof (struct pmaplist)); if (pml == NULL) { syslog(LOG_ERR, "no memory!"); exit(1); } pml->pml_map = list_pml->pml_map; pml->pml_map.pm_vers = RPCBVERS4; pml->pml_next = list_pml; list_pml = pml; /* Also add version 2 stuff to rpcbind list */ rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr); } /* We need to support portmap over IPv4. It makes sense to * support it over AF_LOCAL as well, because that allows * rpcbind to identify the owner of a socket much better * than by relying on privileged ports to tell root from * non-root users. */ if (si.si_af == AF_INET || si.si_af == AF_LOCAL) { if (!svc_register(my_xprt, PMAPPROG, PMAPVERS, pmap_service, 0)) { syslog(LOG_ERR, "could not register on %s", nconf->nc_netid); goto error; } } #endif /* version 3 registration */ if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) { syslog(LOG_ERR, "could not register %s version 3", nconf->nc_netid); goto error; } rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr); /* version 4 registration */ if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) { syslog(LOG_ERR, "could not register %s version 4", nconf->nc_netid); goto error; } rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr); /* decide if bound checking works for this transport */ status = add_bndlist(nconf, &taddr.addr); #ifdef RPCBIND_DEBUG if (debugging) { if (status < 0) { xlog(LOG_DEBUG, "Error in finding bind status for %s\n", nconf->nc_netid); } else if (status == 0) { xlog(LOG_DEBUG, "check binding for %s\n", nconf->nc_netid); } else if (status > 0) { xlog(LOG_DEBUG, "No check binding for %s\n", nconf->nc_netid); } } #endif #ifdef RMTCALLS /* * rmtcall only supported on CLTS transports for now. */ if (nconf->nc_semantics == NC_TPI_CLTS) { status = create_rmtcall_fd(nconf); #ifdef RPCBIND_DEBUG if (debugging) { if (status < 0) { xlog(LOG_DEBUG, "Could not create rmtcall fd for %s\n", nconf->nc_netid); } else { xlog(LOG_DEBUG, "rmtcall fd for %s is %d\n", nconf->nc_netid, status); } } #endif } #endif if (res != NULL) freeaddrinfo(res); return (0); error: if (res != NULL) freeaddrinfo(res); close(fd); return (1); } static void rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf, struct netbuf *addr) { rpcblist_ptr rbl; rbl = malloc(sizeof (rpcblist)); if (rbl == NULL) { syslog(LOG_ERR, "no memory!"); exit(1); } #ifdef RPCBIND_DEBUG if (debugging){ xlog(LOG_DEBUG,"FUNCTION rbllist_add"); xlog(LOG_DEBUG,"Add the prog %lu vers %lu to the rpcbind list", (ulong)prog, (ulong)vers); } #endif rbl->rpcb_map.r_prog = prog; rbl->rpcb_map.r_vers = vers; rbl->rpcb_map.r_netid = strdup(nconf->nc_netid); rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr); rbl->rpcb_map.r_owner = strdup(superuser); rbl->rpcb_next = list_rbl; /* Attach to global list */ list_rbl = rbl; } /* * Catch the signal and die */ static void terminate(int dummy /*__unused*/) { close(rpcbindlockfd); if(createdsocket) unlink(_PATH_RPCBINDSOCK); unlink(RPCBINDDLOCK); #ifdef WARMSTART write_warmstart(); /* Dump yourself */ #endif exit(0); /* exit gracefully */ } void rpcbind_abort() { #ifdef WARMSTART write_warmstart(); /* Dump yourself */ #endif abort(); } /* get command line options */ static void parseargs(int argc, char *argv[]) { int c; oldstyle_local = 1; while ((c = getopt(argc, argv, "adh:ilswf")) != -1) { switch (c) { case 'a': doabort = 1; /* when debugging, do an abort on */ break; /* errors; for rpcbind developers */ /* only! */ case 'd': debugging++; break; case 'h': ++nhosts; hosts = realloc(hosts, nhosts * sizeof(char *)); if (hosts == NULL) errx(1, "Out of memory"); hosts[nhosts - 1] = strdup(optarg); if (hosts[nhosts - 1] == NULL) errx(1, "Out of memory"); break; case 'i': insecure = 1; break; case 'l': verboselog = 1; break; case 's': runasdaemon = 1; break; case 'f': dofork = 0; break; #ifdef WARMSTART case 'w': warmstart = 1; break; #endif default: /* error */ fprintf(stderr, "usage: rpcbind [-adhilswf]\n"); exit (1); } } if (doabort && !debugging) { fprintf(stderr, "-a (abort) specified without -d (debugging) -- ignored.\n"); doabort = 0; } } void reap(int dummy /*__unused*/) { int save_errno = errno; while (wait3(NULL, WNOHANG, NULL) > 0) ; errno = save_errno; } void toggle_verboselog(int dummy /*__unused*/) { verboselog = !verboselog; }