/* * Copyright (c) 2009-2017, 2020 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1983, 1993 * The Regents of the University of California. 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. * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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 #include #include #include #include #include #include #include #include #include #include #include #include #include /* for struct ifaddr */ #include #include #include #include /* Define ND6_INFINITE_LIFETIME */ #include "ifconfig.h" #define ND6BITS "\020\001PERFORMNUD\002ACCEPT_RTADV\003PREFER_SOURCE" \ "\004IFDISABLED\005DONT_SET_IFROUTE\006PROXY_PREFIXES" \ "\007IGNORE_NA\010INSECURE\011REPLICATED\012DAD" static struct in6_ifreq in6_ridreq; static struct in6_aliasreq in6_addreq = { { 0 }, { 0 }, { 0 }, { 0 }, 0, { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } }; static int ip6lifetime; static void in6_fillscopeid(struct sockaddr_in6 *sin6); static int prefix(void *, int); static char *sec2str(time_t); static int explicit_prefix = 0; static char addr_buf[MAXHOSTNAMELEN *2 + 1]; /*for getnameinfo()*/ static void setifprefixlen(const char *addr, int dummy __unused, int s, const struct afswtch *afp) { if (afp->af_getprefix != NULL) afp->af_getprefix(addr, MASK); explicit_prefix = 1; } static void setnd6flags(const char *dummyaddr __unused, int d, int s, const struct afswtch *afp) { struct in6_ndireq nd; int error; memset(&nd, 0, sizeof(nd)); strlcpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname)); error = ioctl(s, SIOCGIFINFO_IN6, &nd); if (error) { warn("ioctl(SIOCGIFINFO_IN6)"); return; } if (d < 0) nd.ndi.flags &= ~(-d); else nd.ndi.flags |= d; error = ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd); if (error) warn("ioctl(SIOCSIFINFO_FLAGS)"); } static void setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused, const struct afswtch *afp) { if (afp->af_af != AF_INET6) err(1, "address flags can be set only for inet6 addresses"); if (flag < 0) in6_addreq.ifra_flags &= ~(-flag); else in6_addreq.ifra_flags |= flag; } static void setip6lifetime(const char *cmd, const char *val, int s, const struct afswtch *afp) { time_t newval, t; char *ep; t = time(NULL); newval = (time_t)strtoul(val, &ep, 0); if (val == ep) errx(1, "invalid %s", cmd); if (afp->af_af != AF_INET6) errx(1, "%s not allowed for the AF", cmd); if (strcmp(cmd, "vltime") == 0) { in6_addreq.ifra_lifetime.ia6t_expire = t + newval; in6_addreq.ifra_lifetime.ia6t_vltime = newval; } else if (strcmp(cmd, "pltime") == 0) { in6_addreq.ifra_lifetime.ia6t_preferred = t + newval; in6_addreq.ifra_lifetime.ia6t_pltime = newval; } } static void setip6pltime(const char *seconds, int dummy __unused, int s, const struct afswtch *afp) { setip6lifetime("pltime", seconds, s, afp); } static void setip6vltime(const char *seconds, int dummy __unused, int s, const struct afswtch *afp) { setip6lifetime("vltime", seconds, s, afp); } static void setip6eui64(const char *cmd, int dummy __unused, int s, const struct afswtch *afp) { struct ifaddrs *ifap, *ifa; const struct sockaddr_in6 *sin6 = NULL; const struct in6_addr *lladdr = NULL; struct in6_addr *in6; if (afp->af_af != AF_INET6) errx(EXIT_FAILURE, "%s not allowed for the AF", cmd); in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr; if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0) errx(EXIT_FAILURE, "interface index is already filled"); if (getifaddrs(&ifap) != 0) err(EXIT_FAILURE, "getifaddrs"); for (ifa = ifap; ifa; ifa = ifa->ifa_next) { if (ifa->ifa_addr->sa_family == AF_INET6 && strcmp(ifa->ifa_name, name) == 0) { sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr; if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { lladdr = &sin6->sin6_addr; break; } } } if (!lladdr) errx(EXIT_FAILURE, "could not determine link local address"); memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8); freeifaddrs(ifap); } static void in6_fillscopeid(struct sockaddr_in6 *sin6) { #if defined(__KAME__) && defined(KAME_SCOPEID) if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { sin6->sin6_scope_id = ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]); sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0; } #endif } static void in6_status(int s __unused, const struct ifaddrs *ifa) { struct sockaddr_in6 *sin, null_sin; struct in6_ifreq ifr6; int s6; u_int32_t flags6; struct in6_addrlifetime lifetime; time_t t = time(NULL); int error; u_int32_t scopeid; memset(&null_sin, 0, sizeof(null_sin)); sin = (struct sockaddr_in6 *)ifa->ifa_addr; if (sin == NULL) return; strlcpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name)); if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { warn("socket(AF_INET6,SOCK_DGRAM)"); return; } ifr6.ifr_addr = *sin; if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) { warn("ioctl(SIOCGIFAFLAG_IN6)"); close(s6); return; } flags6 = ifr6.ifr_ifru.ifru_flags6; memset(&lifetime, 0, sizeof(lifetime)); ifr6.ifr_addr = *sin; if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) { warn("ioctl(SIOCGIFALIFETIME_IN6)"); close(s6); return; } lifetime = ifr6.ifr_ifru.ifru_lifetime; close(s6); /* XXX: embedded link local addr check */ if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) && *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) { u_short index; index = *(u_short *)&sin->sin6_addr.s6_addr[2]; *(u_short *)&sin->sin6_addr.s6_addr[2] = 0; if (sin->sin6_scope_id == 0) sin->sin6_scope_id = ntohs(index); } scopeid = sin->sin6_scope_id; error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf, sizeof(addr_buf), NULL, 0, NI_NUMERICHOST); if (error != 0) inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf, sizeof(addr_buf)); printf("\tinet6 %s ", addr_buf); if (ifa->ifa_flags & IFF_POINTOPOINT) { sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr; /* * some of the interfaces do not have valid destination * address. */ if (sin != NULL && sin->sin6_family == AF_INET6) { int error; /* XXX: embedded link local addr check */ if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) && *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) { u_short index; index = *(u_short *)&sin->sin6_addr.s6_addr[2]; *(u_short *)&sin->sin6_addr.s6_addr[2] = 0; if (sin->sin6_scope_id == 0) sin->sin6_scope_id = ntohs(index); } error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf, sizeof(addr_buf), NULL, 0, NI_NUMERICHOST); if (error != 0) inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf, sizeof(addr_buf)); printf("--> %s ", addr_buf); } } sin = (struct sockaddr_in6 *)ifa->ifa_netmask; if (sin == NULL) sin = &null_sin; printf("prefixlen %d ", prefix(&sin->sin6_addr, sizeof(struct in6_addr))); if ((flags6 & IN6_IFF_ANYCAST) != 0) printf("anycast "); if ((flags6 & IN6_IFF_TENTATIVE) != 0) printf("tentative "); if ((flags6 & IN6_IFF_OPTIMISTIC) != 0) printf("optimistic "); if ((flags6 & IN6_IFF_DUPLICATED) != 0) printf("duplicated "); if ((flags6 & IN6_IFF_DETACHED) != 0) printf("detached "); if ((flags6 & IN6_IFF_DEPRECATED) != 0) printf("deprecated "); if ((flags6 & IN6_IFF_AUTOCONF) != 0) printf("autoconf "); if ((flags6 & IN6_IFF_TEMPORARY) != 0) printf("temporary "); if ((flags6 & IN6_IFF_DYNAMIC) != 0) printf("dynamic "); if ((flags6 & IN6_IFF_SECURED) != 0) printf("secured "); if ((flags6 & IN6_IFF_CLAT46) != 0) printf("clat46 "); if (scopeid) printf("scopeid 0x%x ", scopeid); if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) { printf("pltime "); if (lifetime.ia6t_preferred) { printf("%s ", lifetime.ia6t_preferred < t ? "0" : sec2str(lifetime.ia6t_preferred - t)); } else printf("infty "); printf("vltime "); if (lifetime.ia6t_expire) { printf("%s ", lifetime.ia6t_expire < t ? "0" : sec2str(lifetime.ia6t_expire - t)); } else printf("infty "); } putchar('\n'); } #define SIN6(x) ((struct sockaddr_in6 *) &(x)) static struct sockaddr_in6 *sin6tab[] = { SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr), SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr) }; static void in6_getprefix(const char *plen, int which) { struct sockaddr_in6 *sin = sin6tab[which]; u_char *cp; int len = atoi(plen); if ((len < 0) || (len > 128)) errx(1, "%s: bad value", plen); sin->sin6_len = sizeof(*sin); if (which != MASK) sin->sin6_family = AF_INET6; if ((len == 0) || (len == 128)) { memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr)); return; } memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr)); for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8) *cp++ = 0xff; *cp = 0xff << (8 - len); } static void in6_getaddr(const char *s, int which) { struct sockaddr_in6 *sin = sin6tab[which]; struct addrinfo hints, *res; int error = -1; newaddr &= 1; sin->sin6_len = sizeof(*sin); if (which != MASK) sin->sin6_family = AF_INET6; if (which == ADDR) { char *p = NULL; if((p = strrchr(s, '/')) != NULL) { *p = '\0'; in6_getprefix(p + 1, MASK); explicit_prefix = 1; } } if (sin->sin6_family == AF_INET6) { bzero(&hints, sizeof(struct addrinfo)); hints.ai_family = AF_INET6; error = getaddrinfo(s, NULL, &hints, &res); } if (error != 0) { if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1) errx(1, "%s: bad value", s); } else bcopy(res->ai_addr, sin, res->ai_addrlen); } static int prefix(void *val, int size) { u_char *name = (u_char *)val; int byte, bit, plen = 0; for (byte = 0; byte < size; byte++, plen += 8) if (name[byte] != 0xff) break; if (byte == size) return (plen); for (bit = 7; bit != 0; bit--, plen++) if (!(name[byte] & (1 << bit))) break; for (; bit != 0; bit--) if (name[byte] & (1 << bit)) return(0); byte++; for (; byte < size; byte++) if (name[byte]) return(0); return (plen); } static char * sec2str(time_t total) { static char result[256]; int days, hours, mins, secs; int first = 1; char *p = result; if (0) { days = total / 3600 / 24; hours = (total / 3600) % 24; mins = (total / 60) % 60; secs = total % 60; if (days) { first = 0; p += snprintf(p, sizeof(result) - (p - result), "%dd", days); } if (!first || hours) { first = 0; p += snprintf(p, sizeof(result) - (p - result), "%dh", hours); } if (!first || mins) { first = 0; p += snprintf(p, sizeof(result) - (p - result), "%dm", mins); } snprintf(p, sizeof(result) - (p - result), "%ds", secs); } else snprintf(result, sizeof(result), "%lu", (unsigned long)total); return(result); } static void in6_postproc(int s, const struct afswtch *afp) { if (explicit_prefix == 0) { /* Aggregatable address architecture defines all prefixes are 64. So, it is convenient to set prefixlen to 64 if it is not specified. */ setifprefixlen("64", 0, s, afp); /* in6_getprefix("64", MASK) if MASK is available here... */ } } static void in6_status_tunnel(int s) { char src[NI_MAXHOST]; char dst[NI_MAXHOST]; struct in6_ifreq in6_ifr; const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr; memset(&in6_ifr, 0, sizeof(in6_ifr)); strlcpy(in6_ifr.ifr_name, name, sizeof(in6_ifr.ifr_name)); if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0) return; if (sa->sa_family != AF_INET6) return; in6_fillscopeid(&in6_ifr.ifr_addr); if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0) src[0] = '\0'; if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0) return; if (sa->sa_family != AF_INET6) return; in6_fillscopeid(&in6_ifr.ifr_addr); if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0) dst[0] = '\0'; printf("\ttunnel inet6 %s --> %s\n", src, dst); } static void nd6_status(int s) { struct in6_ndireq nd; int s6; int error; memset(&nd, 0, sizeof(nd)); strlcpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname)); if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { if (errno != EPROTONOSUPPORT) warn("socket(AF_INET6, SOCK_DGRAM)"); return; } error = ioctl(s6, SIOCGIFINFO_IN6, &nd); if (error) { if (errno != EPFNOSUPPORT && errno != EINVAL) warn("ioctl(SIOCGIFINFO_IN6)"); close(s6); return; } close(s6); if (nd.ndi.flags == 0) return; printb("\tnd6 options", (unsigned int)nd.ndi.flags, ND6BITS); putchar('\n'); } static void in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres) { struct in6_aliasreq in6_addreq; memset(&in6_addreq, 0, sizeof(in6_addreq)); strlcpy(in6_addreq.ifra_name, name, sizeof(in6_addreq.ifra_name)); memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len); memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len); if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0) warn("SIOCSIFPHYADDR_IN6"); } #ifndef IPV6_ROUTER_MODE_EXCLUSIVE #define IPV6_ROUTER_MODE_DISABLED 0 #define IPV6_ROUTER_MODE_EXCLUSIVE 1 #define IPV6_ROUTER_MODE_HYBRID 2 #endif /* IPV6_ROUTER_MODE_EXCLUSIVE */ static void in6_set_router(int s, int enable) { struct ifreq ifr; bzero(&ifr, sizeof (ifr)); strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); ifr.ifr_intval = (enable == 0) ? IPV6_ROUTER_MODE_DISABLED : IPV6_ROUTER_MODE_EXCLUSIVE; if (ioctl(s, SIOCSETROUTERMODE_IN6, &ifr) < 0) warn("SIOCSETROUTERMODE_IN6"); } static int routermode_from_string(char * str, int *mode_p) { int success = 1; if (strcasecmp(str, "exclusive") == 0 || strcasecmp(str, "enabled") == 0) { *mode_p = IPV6_ROUTER_MODE_EXCLUSIVE; } else if (strcasecmp(str, "hybrid") == 0) { *mode_p = IPV6_ROUTER_MODE_HYBRID; } else if (strcasecmp(str, "disabled") == 0) { *mode_p = IPV6_ROUTER_MODE_DISABLED; } else { success = 0; } return (success); } static const char * routermode_string(int mode) { const char * str; switch (mode) { case IPV6_ROUTER_MODE_EXCLUSIVE: str = "enabled"; break; case IPV6_ROUTER_MODE_HYBRID: str = "hybrid"; break; case IPV6_ROUTER_MODE_DISABLED: str = "disabled"; break; default: str = ""; break; } return str; } static int in6_routermode(int s, int argc, char *const*argv) { struct in6_ifreq ifr; int ret; bzero(&ifr, sizeof (ifr)); strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (argc == 0) { ret = 0; #ifndef SIOCGETROUTERMODE_IN6 #define SIOCGETROUTERMODE_IN6 _IOWR('i', 137, struct in6_ifreq) #endif /* SIOCGETROUTERMODE_IN6 */ if (ioctl(s, SIOCGETROUTERMODE_IN6, &ifr) < 0) { if (argv != NULL) { warn("SIOCGETROUTERMODE_IN6"); } } else { /* argv is NULL if we're called from status() */ printf("%s%s\n", (argv == NULL) ? "\troutermode6: " : "", routermode_string(ifr.ifr_intval)); } ret = 0; } else { int mode; if (routermode_from_string(argv[0], &mode) == 0) { errx(EXIT_FAILURE, "mode '%s' invalid, must be one of " "disabled, exclusive, or hybrid", argv[0]); } ifr.ifr_intval = mode; if (ioctl(s, SIOCSETROUTERMODE_IN6, &ifr) < 0) { warn("SIOCSETROUTERMODE_IN6"); } ret = 1; } return ret; } static struct cmd inet6_cmds[] = { DEF_CMD_ARG("prefixlen", setifprefixlen), DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags), DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags), DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags), /* RFC 4429, section 3.1, says: * "Optimistic DAD SHOULD NOT be used for manually entered * addresses." * it's not a MUST... */ DEF_CMD("optimistic", IN6_IFF_OPTIMISTIC, setip6flags), DEF_CMD("-optimistic", -IN6_IFF_OPTIMISTIC, setip6flags), DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags), DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags), DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags), DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags), DEF_CMD("nud", ND6_IFF_PERFORMNUD, setnd6flags), DEF_CMD("-nud", -ND6_IFF_PERFORMNUD, setnd6flags), DEF_CMD("ifdisabled", ND6_IFF_IFDISABLED, setnd6flags), DEF_CMD("-ifdisabled", -ND6_IFF_IFDISABLED, setnd6flags), DEF_CMD("replicated", ND6_IFF_REPLICATED, setnd6flags), DEF_CMD("-replicated", -ND6_IFF_REPLICATED, setnd6flags), DEF_CMD("proxy_prefixes", ND6_IFF_PROXY_PREFIXES, setnd6flags), DEF_CMD("-proxy_prefixes", -ND6_IFF_PROXY_PREFIXES, setnd6flags), DEF_CMD("insecure", ND6_IFF_INSECURE, setnd6flags), DEF_CMD("-insecure", -ND6_IFF_INSECURE, setnd6flags), DEF_CMD_ARG("pltime", setip6pltime), DEF_CMD_ARG("vltime", setip6vltime), DEF_CMD("eui64", 0, setip6eui64), DEF_CMD("secured", IN6_IFF_SECURED, setip6flags), DEF_CMD("-secured", -IN6_IFF_SECURED, setip6flags), DEF_CMD("dad", ND6_IFF_DAD, setnd6flags), DEF_CMD("-dad", -ND6_IFF_DAD, setnd6flags), }; static struct afswtch af_inet6 = { .af_name = "inet6", .af_af = AF_INET6, .af_status = in6_status, .af_getaddr = in6_getaddr, .af_getprefix = in6_getprefix, .af_other_status = nd6_status, .af_postproc = in6_postproc, .af_status_tunnel = in6_status_tunnel, .af_settunnel = in6_set_tunnel, .af_setrouter = in6_set_router, .af_routermode = in6_routermode, .af_difaddr = SIOCDIFADDR_IN6, .af_aifaddr = SIOCAIFADDR_IN6, .af_ridreq = &in6_ridreq, .af_addreq = &in6_addreq, }; static void in6_Lopt_cb(const char *optarg __unused) { ip6lifetime++; /* print IPv6 address lifetime */ } static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb }; static __constructor void inet6_ctor(void) { #define N(a) (sizeof(a) / sizeof(a[0])) int i; for (i = 0; i < N(inet6_cmds); i++) cmd_register(&inet6_cmds[i]); af_register(&af_inet6); opt_register(&in6_Lopt); #undef N }