/*
 * 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.
 *
 * @(#)rpcbind.c        1.19    94/04/25 SMI; 1.35 89/04/21 Copyr 1984 Sun Micro
 * $NetBSD: rpcbind.c,v 1.3 2002/11/08 00:16:40 fvdl Exp $
 * $FreeBSD: src/usr.sbin/rpcbind/rpcbind.c,v 1.20 2008/02/14 20:12:23 yar Exp $
 */
/*
 * Copyright (c) 1984 - 1991 by Sun Microsystems, Inc.
 */

/*
 * rpcbind.c
 * Implements the program, version to address mapping for rpc.
 *
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <sys/signal.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <rpc/rpc.h>
#include <rpc/rpc_com.h>
#ifdef PORTMAP
#include <netinet/in.h>
#endif
#include <arpa/inet.h>
#include <fcntl.h>
#include <netdb.h>
#include <stdio.h>
#include <netconfig.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <err.h>
#include <libutil.h>
#include <pwd.h>
#include <string.h>
#include "rpcbind.h"

/* Global variables */
int debugging = 0;      /* Tell me what's going on */
int doabort = 0;        /* When debugging, do an abort on errors */
rpcblist_ptr list_rbl;  /* A list of version 3/4 rpcbind services */

/* 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 ipv6_only = 0;
int nhosts = 0;
int on = 1;
int rpcbindlockfd;

#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";

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);
        }
        openlog("rpcbind", LOG_CONS, LOG_DAEMON);
        if (geteuid()) { /* This command allowed only to root */
                fprintf(stderr, "Sorry. You are not superuser\n");
                exit(1);
        }
        nc_handle = setnetconfig();     /* open netconfig file */
        if (nc_handle == NULL) {
                syslog(LOG_ERR, "could not read /etc/netconfig");
                exit(1);
        }
#ifdef PORTMAP
        udptrans = "";
        tcptrans = "";
#endif

        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);
        }

        rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);

        init_transport(nconf);

        while ((nconf = getnetconfig(nc_handle))) {
            if (nconf->nc_flag & NC_VISIBLE)
                if (ipv6_only != 1 || strcmp(nconf->nc_protofmly, "inet") != 0)
                    init_transport(nconf);
        }
        endnetconfig(nc_handle);

        /* catch the usual termination signals for graceful exit */
        signal(SIGCHLD, reap);
        signal(SIGINT, terminate);
        signal(SIGTERM, terminate);
        signal(SIGQUIT, terminate);
        /* ignore others that could get sent */
        signal(SIGPIPE, SIG_IGN);
        signal(SIGHUP, SIG_IGN);
        signal(SIGUSR1, SIG_IGN);
        signal(SIGUSR2, SIG_IGN);
#ifdef WARMSTART
        if (warmstart) {
                read_warmstart();
        }
#endif
        if (debugging) {
                printf("rpcbind debugging enabled.");
                if (doabort) {
                        printf("  Will abort on errors!\n");
                } else {
                        printf("\n");
                }
        } else {
                if (daemon(0, 0))
                        err(1, "fork failed");
        }

        if (runasdaemon) {
                struct passwd *p;

                if((p = getpwnam(RUN_AS)) == NULL) {
                        syslog(LOG_ERR, "cannot get uid of daemon: %m");
                        exit(1);
                }
                if (setuid(p->pw_uid) == -1) {
                        syslog(LOG_ERR, "setuid to daemon failed: %m");
                        exit(1);
                }
        }

        network_init();

        my_svc_run();
        syslog(LOG_ERR, "svc_run returned unexpectedly");
        rpcbind_abort();
        /* NOTREACHED */

        return 0;
}

/*
 * 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;
        struct t_bind taddr;
        struct addrinfo hints, *res = NULL;
        struct __rpc_sockinfo si;
        SVCXPRT *my_xprt;
        int status;     /* bound checking ? */
        int aicode;
        int addrlen;
        int nhostsbak;
        int bound;
        struct sockaddr *sa;
        u_int32_t host_addr[4];  /* IPv4 or IPv6 */
        struct sockaddr_un sun;
        mode_t oldmask;

        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 ND_DEBUG
        if (debugging) {
            int i;
            char **s;

            fprintf(stderr, "%s: %ld lookup routines :\n",
                nconf->nc_netid, nconf->nc_nlookups);
            for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups;
                i++, s++)
                fprintf(stderr, "[%d] - %s\n", i, *s);
        }
#endif

        /*
         * XXX - using RPC library internal functions.
         */
        if ((strcmp(nconf->nc_netid, "local") == 0) ||
            (strcmp(nconf->nc_netid, "unix") == 0)) {
            /*
             * For other transports we call this later, for each socket we
             * like to bind.
             */
            if ((fd = __rpc_nconf2fd(nconf)) < 0) {
                int non_fatal = 0;
                if (errno == EPROTONOSUPPORT)
                    non_fatal = 1;
                syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s",
                    nconf->nc_netid);
                return (1);
            }
        }

        if (!__rpc_nconf2sockinfo(nconf, &si)) {
            syslog(LOG_ERR, "cannot get information for %s",
                nconf->nc_netid);
            return (1);
        }

        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);
            strcpy(sun.sun_path, _PATH_RPCBINDSOCK);
            sun.sun_len = SUN_LEN(&sun);
            addrlen = sizeof (struct sockaddr_un);
            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 ((strcmp(nconf->nc_netid, "local") != 0) &&
            (strcmp(nconf->nc_netid, "unix") != 0)) {
            /*
             * 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
             */
            bound = 0;
            while (nhostsbak > 0) {
                --nhostsbak;
                /*
                 * XXX - using RPC library internal functions.
                 */
                if ((fd = __rpc_nconf2fd(nconf)) < 0) {
                    int non_fatal = 0;
                    if (errno == EPROTONOSUPPORT &&
                        nconf->nc_semantics != NC_TPI_CLTS)
                        non_fatal = 1;
                    syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
                        "cannot create socket for %s", nconf->nc_netid);
                    return (1);
                }
                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 address.
                         */
                        if (inet_pton(AF_INET6,
                            hosts[nhostsbak], host_addr) == 1) {
                            close(fd);
                            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 address.
                         */
                        if (inet_pton(AF_INET, hosts[nhostsbak],
                            host_addr) == 1) {
                                close(fd);
                                continue;
                        }
                    }
                    if (setsockopt(fd, IPPROTO_IPV6,
                        IPV6_V6ONLY, &on, sizeof on) < 0) {
                        syslog(LOG_ERR,
                            "can't set v6-only binding for "
                            "ipv6 socket: %m");
                        continue;
                    }
                    break;
                default:
                    break;
                }

                /*
                 * If no hosts were specified, just bind to INADDR_ANY
                 */
                if (strcmp("*", hosts[nhostsbak]) == 0)
                    hosts[nhostsbak] = NULL;
                if ((strcmp(nconf->nc_netid, "local") != 0) &&
                    (strcmp(nconf->nc_netid, "unix") != 0)) {
                    if ((aicode = getaddrinfo(hosts[nhostsbak],
                        servname, &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
                    bound = 1;
                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 ND_DEBUG
                if (debugging) {
                    /*
                     * for debugging print out our universal
                     * address
                     */
                    char *uaddr;
                    struct netbuf nb;

                    nb.buf = sa;
                    nb.len = nb.maxlen = sa->sa_len;
                    uaddr = taddr2uaddr(nconf, &nb);
                    fprintf(stderr, "rpcbind : my address is %s\n", uaddr);
                    free(uaddr);
                }
#endif

                if (nconf->nc_semantics != NC_TPI_CLTS)
                    listen(fd, SOMAXCONN);

                my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
                    RPC_MAXDATASIZE, RPC_MAXDATASIZE);
                if (my_xprt == NULL) {
                    syslog(LOG_ERR, "%s: could not create service",
                        nconf->nc_netid);
                    goto error;
                }
            }
            if (!bound)
                return 1;
        } else {
            oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
            if (bind(fd, sa, addrlen) < 0) {
                syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid);
                if (res != NULL)
                    freeaddrinfo(res);
                return 1;
            }
            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 ND_DEBUG
            if (debugging) {
                /* for debugging print out our universal address */
                char *uaddr;
                struct netbuf nb;

                nb.buf = sa;
                nb.len = nb.maxlen = sa->sa_len;
                uaddr = taddr2uaddr(nconf, &nb);
                fprintf(stderr, "rpcbind : my address is %s\n", uaddr);
                free(uaddr);
            }
#endif

            if (nconf->nc_semantics != NC_TPI_CLTS)
                listen(fd, SOMAXCONN);

            my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
                RPC_MAXDATASIZE, RPC_MAXDATASIZE);
            if (my_xprt == NULL) {
                syslog(LOG_ERR, "%s: could not create service",
                    nconf->nc_netid);
                goto error;
            }
        }

#ifdef PORTMAP
        /*
         * Register both the versions for tcp/ip, udp/ip and local.
         */
        if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 &&
                (strcmp(nconf->nc_proto, NC_TCP) == 0 ||
                strcmp(nconf->nc_proto, NC_UDP) == 0)) ||
                (strcmp(nconf->nc_netid, "unix") == 0) ||
                (strcmp(nconf->nc_netid, "local") == 0)) {
                struct pmaplist *pml;

                if (!svc_register(my_xprt, PMAPPROG, PMAPVERS,
                        pmap_service, 0)) {
                        syslog(LOG_ERR, "could not register on %s",
                                        nconf->nc_netid);
                        goto error;
                }
                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;
                if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
                        if (tcptrans[0]) {
                                syslog(LOG_ERR,
                                "cannot have more than one TCP transport");
                                goto error;
                        }
                        tcptrans = strdup(nconf->nc_netid);
                        pml->pml_map.pm_prot = IPPROTO_TCP;

                        /* Let's snarf the universal address */
                        /* "h1.h2.h3.h4.p1.p2" */
                        tcp_uaddr = taddr2uaddr(nconf, &taddr.addr);
                } else if (strcmp(nconf->nc_proto, NC_UDP) == 0) {
                        if (udptrans[0]) {
                                syslog(LOG_ERR,
                                "cannot have more than one UDP transport");
                                goto error;
                        }
                        udptrans = strdup(nconf->nc_netid);
                        pml->pml_map.pm_prot = IPPROTO_UDP;

                        /* Let's snarf the universal address */
                        /* "h1.h2.h3.h4.p1.p2" */
                        udp_uaddr = taddr2uaddr(nconf, &taddr.addr);
                } else if (strcmp(nconf->nc_netid, "local") == 0)
                        pml->pml_map.pm_prot = IPPROTO_ST;
                else if (strcmp(nconf->nc_netid, "unix") == 0)
                        pml->pml_map.pm_prot = IPPROTO_ST;
                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);
        }
#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 BIND_DEBUG
        if (debugging) {
                if (status < 0) {
                        fprintf(stderr, "Error in finding bind status for %s\n",
                                nconf->nc_netid);
                } else if (status == 0) {
                        fprintf(stderr, "check binding for %s\n",
                                nconf->nc_netid);
                } else if (status > 0) {
                        fprintf(stderr, "No check binding for %s\n",
                                nconf->nc_netid);
                }
        }
#endif
        /*
         * rmtcall only supported on CLTS transports for now.
         */
        if (nconf->nc_semantics == NC_TPI_CLTS) {
                status = create_rmtcall_fd(nconf);

#ifdef BIND_DEBUG
                if (debugging) {
                        if (status < 0) {
                                fprintf(stderr,
                                    "Could not create rmtcall fd for %s\n",
                                        nconf->nc_netid);
                        } else {
                                fprintf(stderr, "rmtcall fd for %s is %d\n",
                                        nconf->nc_netid, status);
                        }
                }
#endif
        }
        return (0);
error:
        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);
        }

        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);
#ifdef WARMSTART
        syslog(LOG_ERR,
                "rpcbind terminating on signal. Restart with \"rpcbind -w\"");
        write_warmstart();      /* Dump yourself */
#endif
        exit(2);
}

void
rpcbind_abort(void)
{
#ifdef WARMSTART
        write_warmstart();      /* Dump yourself */
#endif
        abort();
}

/* get command line options */
static void
parseargs(int argc, char *argv[])
{
        int c;

#ifdef WARMSTART
#define WSOP    "w"
#else
#define WSOP    ""
#endif
        while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) {
                switch (c) {
                case '6':
                        ipv6_only = 1;
                        break;
                case 'a':
                        doabort = 1;    /* when debugging, do an abort on */
                        break;          /* errors; for rpcbind developers */
                                        /* only! */
                case 'd':
                        debugging = 1;
                        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':
                        oldstyle_local = 1;
                        break;
                case 'l':
                        verboselog = 1;
                        break;
                case 's':
                        runasdaemon = 1;
                        break;
#ifdef WARMSTART
                case 'w':
                        warmstart = 1;
                        break;
#endif
                default:        /* error */
                        fprintf(stderr,
                            "usage: rpcbind [-6adiLls%s] [-h bindip]\n",
                            WSOP);
                        exit (1);
                }
        }
        if (doabort && !debugging) {
            fprintf(stderr,
                "-a (abort) specified without -d (debugging) -- ignored.\n");
            doabort = 0;
        }
#undef WSOP
}

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;
}