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ifconfig.c revision 1.188
      1 /*	$NetBSD: ifconfig.c,v 1.188 2008/05/06 16:15:17 dyoung Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 /*
     34  * Copyright (c) 1983, 1993
     35  *	The Regents of the University of California.  All rights reserved.
     36  *
     37  * Redistribution and use in source and binary forms, with or without
     38  * modification, are permitted provided that the following conditions
     39  * are met:
     40  * 1. Redistributions of source code must retain the above copyright
     41  *    notice, this list of conditions and the following disclaimer.
     42  * 2. Redistributions in binary form must reproduce the above copyright
     43  *    notice, this list of conditions and the following disclaimer in the
     44  *    documentation and/or other materials provided with the distribution.
     45  * 3. Neither the name of the University nor the names of its contributors
     46  *    may be used to endorse or promote products derived from this software
     47  *    without specific prior written permission.
     48  *
     49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     59  * SUCH DAMAGE.
     60  */
     61 
     62 #include <sys/cdefs.h>
     63 #ifndef lint
     64 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
     65 	The Regents of the University of California.  All rights reserved.\n");
     66 #endif /* not lint */
     67 
     68 #ifndef lint
     69 #if 0
     70 static char sccsid[] = "@(#)ifconfig.c	8.2 (Berkeley) 2/16/94";
     71 #else
     72 __RCSID("$NetBSD: ifconfig.c,v 1.188 2008/05/06 16:15:17 dyoung Exp $");
     73 #endif
     74 #endif /* not lint */
     75 
     76 #include <sys/param.h>
     77 #include <sys/socket.h>
     78 #include <sys/ioctl.h>
     79 
     80 #include <net/if.h>
     81 #include <net/if_dl.h>
     82 #include <net/if_media.h>
     83 #include <net/if_ether.h>
     84 #include <netinet/in.h>		/* XXX */
     85 #include <netinet/in_var.h>	/* XXX */
     86 #include <net/agr/if_agrioctl.h>
     87 
     88 #include <net80211/ieee80211_ioctl.h>
     89 
     90 #include <netdb.h>
     91 
     92 #include <sys/protosw.h>
     93 
     94 #include <assert.h>
     95 #include <ctype.h>
     96 #include <err.h>
     97 #include <errno.h>
     98 #include <stdbool.h>
     99 #include <stddef.h>
    100 #include <stdio.h>
    101 #include <stdlib.h>
    102 #include <string.h>
    103 #include <unistd.h>
    104 #include <ifaddrs.h>
    105 #include <util.h>
    106 
    107 #include "extern.h"
    108 
    109 #ifndef INET_ONLY
    110 #include "af_atalk.h"
    111 #include "af_iso.h"
    112 #endif /* ! INET_ONLY */
    113 #include "af_inet.h"
    114 #ifdef INET6
    115 #include "af_inet6.h"
    116 #endif /* INET6 */
    117 
    118 #include "agr.h"
    119 #include "carp.h"
    120 #include "ieee80211.h"
    121 #include "tunnel.h"
    122 #include "vlan.h"
    123 #include "parse.h"
    124 #include "env.h"
    125 
    126 int	setaddr, doalias;
    127 int	clearaddr;
    128 int	newaddr = -1;
    129 int	check_up_state = -1;
    130 int	bflag, dflag, hflag, lflag, mflag, sflag, uflag, vflag, zflag;
    131 #ifdef INET6
    132 int	Lflag;
    133 #endif
    134 
    135 /*
    136  * Media stuff.  Whenever a media command is first performed, the
    137  * currently select media is grabbed for this interface.  If `media'
    138  * is given, the current media word is modifed.  `mediaopt' commands
    139  * only modify the set and clear words.  They then operate on the
    140  * current media word later.
    141  */
    142 int	media_current;
    143 int	mediaopt_set;
    144 int	mediaopt_clear;
    145 
    146 void	check_ifflags_up(const char *);
    147 
    148 int 	notealias(prop_dictionary_t, prop_dictionary_t);
    149 int 	notrailers(prop_dictionary_t, prop_dictionary_t);
    150 int 	setifaddr(prop_dictionary_t, prop_dictionary_t);
    151 int 	setifdstormask(prop_dictionary_t, prop_dictionary_t);
    152 int 	setifflags(prop_dictionary_t, prop_dictionary_t);
    153 static int	setifcaps(prop_dictionary_t, prop_dictionary_t);
    154 int 	setifbroadaddr(prop_dictionary_t, prop_dictionary_t);
    155 static int 	setifmetric(prop_dictionary_t, prop_dictionary_t);
    156 static int 	setifmtu(prop_dictionary_t, prop_dictionary_t);
    157 int 	setifnetmask(prop_dictionary_t, prop_dictionary_t);
    158 int	setifprefixlen(prop_dictionary_t, prop_dictionary_t);
    159 int	setmedia(prop_dictionary_t, prop_dictionary_t);
    160 int	setmediamode(prop_dictionary_t, prop_dictionary_t);
    161 int	setmediaopt(prop_dictionary_t, prop_dictionary_t);
    162 int	unsetmediaopt(prop_dictionary_t, prop_dictionary_t);
    163 int	setmediainst(prop_dictionary_t, prop_dictionary_t);
    164 static int	clone_command(prop_dictionary_t, prop_dictionary_t);
    165 static void	do_setifpreference(prop_dictionary_t);
    166 
    167 static int no_cmds_exec(prop_dictionary_t, prop_dictionary_t);
    168 static int media_status_exec(prop_dictionary_t, prop_dictionary_t);
    169 
    170 int	carrier(prop_dictionary_t);
    171 void	printall(const char *, prop_dictionary_t);
    172 int	list_cloners(prop_dictionary_t, prop_dictionary_t);
    173 void 	status(const struct sockaddr_dl *, prop_dictionary_t);
    174 void 	usage(void);
    175 
    176 void	print_media_word(int, const char *);
    177 void	process_media_commands(prop_dictionary_t);
    178 void	init_current_media(prop_dictionary_t, prop_dictionary_t);
    179 
    180 /* Known address families */
    181 static const struct afswtch afs[] = {
    182 	  {.af_name = "inet", .af_af = AF_INET, .af_status = in_status,
    183 	   .af_addr_commit = commit_address}
    184 
    185 #ifdef INET6
    186 	, {.af_name = "inet6", .af_af = AF_INET6, .af_status = in6_status,
    187 	   .af_getaddr = in6_getaddr, .af_getprefix = in6_getprefix,
    188 	   .af_difaddr = SIOCDIFADDR_IN6, .af_aifaddr = SIOCAIFADDR_IN6,
    189 	/* Deleting the first address before setting new one is
    190 	 * not prefered way in this protocol.
    191 	 */
    192 	   .af_gifaddr = 0, .af_ridreq = &in6_ridreq, .af_addreq = &in6_addreq}
    193 #endif
    194 
    195 #ifndef INET_ONLY	/* small version, for boot media */
    196 	, {.af_name = "atalk", .af_af = AF_APPLETALK, .af_status = at_status,
    197 	   .af_getaddr = at_getaddr, NULL, .af_difaddr = SIOCDIFADDR,
    198 	   .af_aifaddr = SIOCAIFADDR, .af_gifaddr = SIOCGIFADDR,
    199 	   .af_ridreq = &at_addreq, .af_addreq = &at_addreq}
    200 	, {.af_name = "iso", .af_af = AF_ISO, .af_status = iso_status,
    201 	   .af_getaddr = iso_getaddr, NULL, .af_difaddr = SIOCDIFADDR_ISO,
    202 	   .af_aifaddr = SIOCAIFADDR_ISO, .af_gifaddr = SIOCGIFADDR_ISO,
    203 	   .af_ridreq = &iso_ridreq, .af_addreq = &iso_addreq}
    204 #endif	/* INET_ONLY */
    205 
    206 	, {.af_name = NULL}	/* sentinel */
    207 };
    208 
    209 #define	IFKW(__word, __flag)					\
    210 {								\
    211 	.k_word = (__word), .k_neg = true, .k_type = KW_T_NUM,	\
    212 	.k_num = (__flag),					\
    213 	.k_negnum = -(__flag)					\
    214 }
    215 
    216 struct kwinst ifflagskw[] = {
    217 	  IFKW("arp", IFF_NOARP)
    218 	, IFKW("debug", IFF_DEBUG)
    219 	, IFKW("link0", IFF_LINK0)
    220 	, IFKW("link1", IFF_LINK1)
    221 	, IFKW("link2", IFF_LINK2)
    222 	, {.k_word = "down", .k_type = KW_T_NUM, .k_num = -IFF_UP}
    223 	, {.k_word = "up", .k_type = KW_T_NUM, .k_num = IFF_UP}
    224 };
    225 
    226 struct kwinst ifcapskw[] = {
    227 	  IFKW("ip4csum-tx",	IFCAP_CSUM_IPv4_Tx)
    228 	, IFKW("ip4csum-rx",	IFCAP_CSUM_IPv4_Rx)
    229 	, IFKW("tcp4csum-tx",	IFCAP_CSUM_TCPv4_Tx)
    230 	, IFKW("tcp4csum-rx",	IFCAP_CSUM_TCPv4_Rx)
    231 	, IFKW("udp4csum-tx",	IFCAP_CSUM_UDPv4_Tx)
    232 	, IFKW("udp4csum-rx",	IFCAP_CSUM_UDPv4_Rx)
    233 	, IFKW("tcp6csum-tx",	IFCAP_CSUM_TCPv6_Tx)
    234 	, IFKW("tcp6csum-rx",	IFCAP_CSUM_TCPv6_Rx)
    235 	, IFKW("udp6csum-tx",	IFCAP_CSUM_UDPv6_Tx)
    236 	, IFKW("udp6csum-rx",	IFCAP_CSUM_UDPv6_Rx)
    237 	, IFKW("ip4csum",	IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_IPv4_Rx)
    238 	, IFKW("tcp4csum",	IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_TCPv4_Rx)
    239 	, IFKW("udp4csum",	IFCAP_CSUM_UDPv4_Tx|IFCAP_CSUM_UDPv4_Rx)
    240 	, IFKW("tcp6csum",	IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_TCPv6_Rx)
    241 	, IFKW("udp6csum",	IFCAP_CSUM_UDPv6_Tx|IFCAP_CSUM_UDPv6_Rx)
    242 	, IFKW("tso4",		IFCAP_TSOv4)
    243 	, IFKW("tso6",		IFCAP_TSOv6)
    244 };
    245 
    246 extern struct pbranch command_root;
    247 extern struct pbranch opt_command;
    248 extern struct pbranch opt_family, opt_silent_family;
    249 extern struct pkw cloning, silent_family, family, ia6flags, ia6lifetime,
    250     ieee80211bool, ifcaps, ifflags, lists, misc;
    251 
    252 struct pinteger parse_metric = PINTEGER_INITIALIZER(&parse_metric, "metric", 10,
    253     setifmetric, "metric", &command_root.pb_parser);
    254 
    255 struct pinteger parse_mtu = PINTEGER_INITIALIZER(&parse_mtu, "mtu", 10,
    256     setifmtu, "mtu", &command_root.pb_parser);
    257 
    258 struct pinteger parse_prefixlen = PINTEGER_INITIALIZER(&parse_prefixlen,
    259     "prefixlen", 10, setifprefixlen, "prefixlen", &command_root.pb_parser);
    260 
    261 struct pinteger parse_preference = PINTEGER_INITIALIZER1(&parse_preference,
    262     "preference", INT16_MIN, INT16_MAX, 10, NULL, "preference",
    263     &command_root.pb_parser);
    264 
    265 struct paddr parse_netmask = PADDR_INITIALIZER(&parse_netmask, "netmask",
    266     setifnetmask, "dstormask", NULL, NULL, NULL, &command_root.pb_parser);
    267 
    268 struct paddr parse_broadcast = PADDR_INITIALIZER(&parse_broadcast,
    269     "broadcast address",
    270     setifbroadaddr, "broadcast", NULL, NULL, NULL, &command_root.pb_parser);
    271 
    272 struct pstr mediamode = PSTR_INITIALIZER(&mediamode, "mediamode",
    273     setmediamode, "mediamode", &command_root.pb_parser);
    274 
    275 struct pinteger mediainst = PINTEGER_INITIALIZER1(&mediainst, "mediainst",
    276     0, IFM_INST_MAX, 10, setmediainst, "mediainst", &command_root.pb_parser);
    277 
    278 struct pstr unmediaopt = PSTR_INITIALIZER(&unmediaopt, "-mediaopt",
    279     unsetmediaopt, "unmediaopt", &command_root.pb_parser);
    280 
    281 struct pstr mediaopt = PSTR_INITIALIZER(&mediaopt, "mediaopt",
    282     setmediaopt, "mediaopt", &command_root.pb_parser);
    283 
    284 struct pstr media = PSTR_INITIALIZER(&media, "media",
    285     setmedia, "media", &command_root.pb_parser);
    286 
    287 struct kwinst misckw[] = {
    288 	  {.k_word = "agrport", .k_type = KW_T_NUM, .k_neg = true,
    289 	   .k_num = AGRCMD_ADDPORT, .k_negnum = AGRCMD_REMPORT,
    290 	   .k_exec = agrsetport}
    291 	, {.k_word = "alias", .k_key = "alias", .k_deact = "alias",
    292 	   .k_type = KW_T_BOOL, .k_neg = true,
    293 	   .k_bool = true, .k_negbool = false,
    294 	   .k_exec = notealias, .k_nextparser = &command_root.pb_parser}
    295 	, {.k_word = "bssid", .k_nextparser = &parse_bssid.ps_parser}
    296 	, {.k_word = "-bssid", .k_exec = unsetifbssid,
    297 	   .k_nextparser = &command_root.pb_parser}
    298 	, {.k_word = "broadcast", .k_nextparser = &parse_broadcast.pa_parser}
    299 	, {.k_word = "chan", .k_nextparser = &parse_chan.pi_parser}
    300 	, {.k_word = "-chan", .k_key = "chan", .k_type = KW_T_NUM,
    301 	   .k_num = IEEE80211_CHAN_ANY, .k_exec = setifchan,
    302 	   .k_nextparser = &command_root.pb_parser}
    303 	, {.k_word = "delete", .k_key = "alias", .k_deact = "alias",
    304 	   .k_type = KW_T_BOOL, .k_bool = false, .k_exec = notealias,
    305 	   .k_nextparser = &command_root.pb_parser}
    306 	, {.k_word = "deletetunnel", .k_exec = deletetunnel,
    307 	   .k_nextparser = &command_root.pb_parser}
    308 	, {.k_word = "frag", .k_nextparser = &parse_frag.pi_parser}
    309 	, {.k_word = "-frag", .k_key = "frag", .k_type = KW_T_NUM,
    310 	   .k_num = IEEE80211_FRAG_MAX, .k_exec = setiffrag,
    311 	   .k_nextparser = &command_root.pb_parser}
    312 	, {.k_word = "instance", .k_key = "anymedia", .k_type = KW_T_BOOL,
    313 	   .k_bool = true, .k_act = "media", .k_deact = "mediainst",
    314 	   .k_nextparser = &mediainst.pi_parser}
    315 	, {.k_word = "inst", .k_key = "anymedia", .k_type = KW_T_BOOL,
    316 	   .k_bool = true, .k_act = "media", .k_deact = "mediainst",
    317 	   .k_nextparser = &mediainst.pi_parser}
    318 	, {.k_word = "list", .k_nextparser = &lists.pk_parser}
    319 	, {.k_word = "media", .k_key = "anymedia", .k_type = KW_T_BOOL,
    320 	   .k_bool = true, .k_deact = "media", .k_altdeact = "anymedia",
    321 	   .k_nextparser = &media.ps_parser}
    322 	, {.k_word = "mediaopt", .k_key = "anymedia", .k_type = KW_T_BOOL,
    323 	   .k_bool = true, .k_deact = "mediaopt", .k_altdeact = "instance",
    324 	   .k_nextparser = &mediaopt.ps_parser}
    325 	, {.k_word = "-mediaopt", .k_key = "anymedia", .k_type = KW_T_BOOL,
    326 	   .k_bool = true, .k_deact = "unmediaopt", .k_altdeact = "media",
    327 	   .k_nextparser = &unmediaopt.ps_parser}
    328 	, {.k_word = "mode", .k_key = "anymedia", .k_type = KW_T_BOOL,
    329 	   .k_bool = true, .k_deact = "mode",
    330 	   .k_nextparser = &mediamode.ps_parser}
    331 	, {.k_word = "metric", .k_nextparser = &parse_metric.pi_parser}
    332 	, {.k_word = "mtu", .k_nextparser = &parse_mtu.pi_parser}
    333 	, {.k_word = "netmask", .k_nextparser = &parse_netmask.pa_parser}
    334 	, {.k_word = "nwid", .k_nextparser = &parse_ssid.ps_parser}
    335 	, {.k_word = "nwkey", .k_nextparser = &parse_nwkey.ps_parser}
    336 	, {.k_word = "-nwkey", .k_exec = unsetifnwkey,
    337 	   .k_nextparser = &command_root.pb_parser}
    338 	, {.k_word = "preference", .k_act = "address",
    339 	   .k_nextparser = &parse_preference.pi_parser}
    340 	, {.k_word = "prefixlen", .k_nextparser = &parse_prefixlen.pi_parser}
    341 	, {.k_word = "ssid", .k_nextparser = &parse_ssid.ps_parser}
    342 	, {.k_word = "powersavesleep",
    343 	   .k_nextparser = &parse_powersavesleep.pi_parser}
    344 	, {.k_word = "trailers", .k_neg = true,
    345 	   .k_exec = notrailers, .k_nextparser = &command_root.pb_parser}
    346 	, {.k_word = "tunnel", .k_nextparser = &tunsrc.pa_parser}
    347 	, {.k_word = "vlan", .k_nextparser = &vlan.pi_parser}
    348 	, {.k_word = "vlanif", .k_act = "vlan",
    349 	   .k_nextparser = &vlanif.pif_parser}
    350 	, {.k_word = "-vlanif", .k_key = "vlanif", .k_type = KW_T_STR,
    351 	   .k_str = "", .k_exec = setvlanif}
    352 #ifndef INET_ONLY
    353 	, {.k_word = "phase", .k_nextparser = &phase.pi_parser}
    354 	, {.k_word = "range", .k_nextparser = &parse_range.ps_parser}
    355 	, {.k_word = "nsellength", .k_nextparser = &parse_nsellength.pi_parser}
    356 	, {.k_word = "snpaoffset", .k_nextparser = &snpaoffset.pi_parser}
    357 	/* CARP */
    358 	, {.k_word = "advbase", .k_nextparser = &parse_advbase.pi_parser}
    359 	, {.k_word = "advskew", .k_nextparser = &parse_advskew.pi_parser}
    360 	, {.k_word = "carpdev", .k_nextparser = &carpdev.pif_parser}
    361 	, {.k_word = "-carpdev", .k_key = "carpdev", .k_type = KW_T_STR,
    362 	   .k_str = "", .k_exec = setcarpdev,
    363 	   .k_nextparser = &command_root.pb_parser}
    364 	, {.k_word = "pass", .k_nextparser = &pass.ps_parser}
    365 	, {.k_word = "state", .k_nextparser = &carpstate.pk_parser}
    366 	, {.k_word = "vhid", .k_nextparser = &parse_vhid.pi_parser}
    367 #endif
    368 #ifdef INET6
    369 	, {.k_word = "eui64", .k_exec = setia6eui64,
    370 	   .k_nextparser = &command_root.pb_parser}
    371 #endif /*INET6*/
    372 };
    373 
    374 /* key: clonecmd */
    375 struct kwinst clonekw[] = {
    376 	{.k_word = "create", .k_type = KW_T_NUM, .k_num = SIOCIFCREATE,
    377 	 .k_nextparser = &opt_silent_family.pb_parser},
    378 	{.k_word = "destroy", .k_type = KW_T_NUM, .k_num = SIOCIFDESTROY}
    379 };
    380 
    381 struct kwinst familykw[] = {
    382 	  {.k_word = "inet", .k_type = KW_T_NUM, .k_num = AF_INET,
    383 	   .k_nextparser = NULL}
    384 #ifdef INET6
    385 	, {.k_word = "inet6", .k_type = KW_T_NUM, .k_num = AF_INET6,
    386 	   .k_nextparser = NULL}
    387 #endif
    388 #ifndef INET_ONLY	/* small version, for boot media */
    389 	, {.k_word = "atalk", .k_type = KW_T_NUM, .k_num = AF_APPLETALK,
    390 	   .k_nextparser = NULL}
    391 	, {.k_word = "iso", .k_type = KW_T_NUM, .k_num = AF_ISO,
    392 	   .k_nextparser = NULL}
    393 #endif	/* INET_ONLY */
    394 };
    395 
    396 struct pterm cloneterm = PTERM_INITIALIZER(&cloneterm, "list cloners",
    397     list_cloners, "none");
    398 
    399 struct pterm no_cmds = PTERM_INITIALIZER(&no_cmds, "no commands", no_cmds_exec,
    400     "none");
    401 
    402 struct pkw family_only =
    403     PKW_INITIALIZER(&family_only, "family-only", NULL, "af", familykw,
    404 	__arraycount(familykw), &no_cmds.pt_parser);
    405 
    406 struct paddr address = PADDR_INITIALIZER(&address,
    407     "local address (address 1)",
    408     setifaddr, "address", "netmask", NULL, "address", &command_root.pb_parser);
    409 
    410 struct paddr dstormask = PADDR_INITIALIZER(&dstormask,
    411     "destination/netmask (address 2)",
    412     setifdstormask, "dstormask", NULL, "address", "dstormask",
    413     &command_root.pb_parser);
    414 
    415 struct paddr broadcast = PADDR_INITIALIZER(&broadcast,
    416     "broadcast address (address 3)",
    417     setifbroadaddr, "broadcast", NULL, "dstormask", "broadcast",
    418     &command_root.pb_parser);
    419 
    420 struct branch opt_clone_brs[] = {
    421 	  {.b_nextparser = &cloning.pk_parser}
    422 	, {.b_nextparser = &opt_family.pb_parser}
    423 }, opt_silent_family_brs[] = {
    424 	  {.b_nextparser = &silent_family.pk_parser}
    425 	, {.b_nextparser = &command_root.pb_parser}
    426 }, opt_family_brs[] = {
    427 	  {.b_nextparser = &family.pk_parser}
    428 	, {.b_nextparser = &opt_command.pb_parser}
    429 }, command_root_brs[] = {
    430 	  {.b_nextparser = &ieee80211bool.pk_parser}
    431 	, {.b_nextparser = &ifflags.pk_parser}
    432 	, {.b_nextparser = &ifcaps.pk_parser}
    433 #ifdef INET6
    434 	, {.b_nextparser = &ia6flags.pk_parser}
    435 	, {.b_nextparser = &ia6lifetime.pk_parser}
    436 #endif /*INET6*/
    437 	, {.b_nextparser = &misc.pk_parser}
    438 	, {.b_nextparser = &address.pa_parser}
    439 	, {.b_nextparser = &dstormask.pa_parser}
    440 	, {.b_nextparser = &broadcast.pa_parser}
    441 	, {.b_nextparser = NULL}
    442 }, opt_command_brs[] = {
    443 	  {.b_nextparser = &no_cmds.pt_parser}
    444 	, {.b_nextparser = &command_root.pb_parser}
    445 };
    446 
    447 struct branch opt_family_only_brs[] = {
    448 	  {.b_nextparser = &no_cmds.pt_parser}
    449 	, {.b_nextparser = &family_only.pk_parser}
    450 };
    451 struct pbranch opt_family_only = PBRANCH_INITIALIZER(&opt_family_only,
    452     "opt-family-only", opt_family_only_brs,
    453     __arraycount(opt_family_only_brs), true);
    454 struct pbranch opt_command = PBRANCH_INITIALIZER(&opt_command,
    455     "optional command",
    456     opt_command_brs, __arraycount(opt_command_brs), true);
    457 
    458 struct pbranch command_root = PBRANCH_INITIALIZER(&command_root,
    459     "command-root", command_root_brs, __arraycount(command_root_brs), true);
    460 
    461 struct piface iface_opt_family_only =
    462     PIFACE_INITIALIZER(&iface_opt_family_only, "iface-opt-family-only",
    463     NULL, "if", &opt_family_only.pb_parser);
    464 
    465 struct pkw family = PKW_INITIALIZER(&family, "family", NULL, "af",
    466     familykw, __arraycount(familykw), &opt_command.pb_parser);
    467 
    468 struct pkw silent_family = PKW_INITIALIZER(&silent_family, "silent family",
    469     NULL, "af", familykw, __arraycount(familykw), &command_root.pb_parser);
    470 
    471 #ifdef INET6
    472 struct kwinst ia6flagskw[] = {
    473 	  IFKW("anycast",	IN6_IFF_ANYCAST)
    474 	, IFKW("tentative",	IN6_IFF_TENTATIVE)
    475 	, IFKW("deprecated",	IN6_IFF_DEPRECATED)
    476 };
    477 
    478 struct pinteger pltime = PINTEGER_INITIALIZER(&pltime, "pltime", 0,
    479     setia6pltime, "pltime", &command_root.pb_parser);
    480 
    481 struct pinteger vltime = PINTEGER_INITIALIZER(&vltime, "vltime", 0,
    482     setia6vltime, "vltime", &command_root.pb_parser);
    483 
    484 struct kwinst ia6lifetimekw[] = {
    485 	  {.k_word = "pltime", .k_nextparser = &pltime.pi_parser}
    486 	, {.k_word = "vltime", .k_nextparser = &vltime.pi_parser}
    487 };
    488 
    489 struct pkw ia6flags = PKW_INITIALIZER(&ia6flags, "ia6flags", setia6flags,
    490     "ia6flag", ia6flagskw, __arraycount(ia6flagskw), &command_root.pb_parser);
    491 struct pkw ia6lifetime = PKW_INITIALIZER(&ia6lifetime, "ia6lifetime", NULL,
    492     NULL, ia6lifetimekw, __arraycount(ia6lifetimekw), NULL);
    493 #endif /*INET6*/
    494 
    495 struct pkw ifcaps = PKW_INITIALIZER(&ifcaps, "ifcaps", setifcaps,
    496     "ifcap", ifcapskw, __arraycount(ifcapskw), &command_root.pb_parser);
    497 
    498 struct pkw ifflags = PKW_INITIALIZER(&ifflags, "ifflags", setifflags,
    499     "ifflag", ifflagskw, __arraycount(ifflagskw), &command_root.pb_parser);
    500 
    501 struct pkw cloning = PKW_INITIALIZER(&cloning, "cloning", clone_command,
    502     "clonecmd", clonekw, __arraycount(clonekw), NULL);
    503 
    504 struct pkw misc = PKW_INITIALIZER(&misc, "misc", NULL, NULL,
    505     misckw, __arraycount(misckw), NULL);
    506 
    507 struct pbranch opt_clone = PBRANCH_INITIALIZER(&opt_clone,
    508     "opt-clone", opt_clone_brs, __arraycount(opt_clone_brs), true);
    509 
    510 struct pbranch opt_silent_family = PBRANCH_INITIALIZER(&opt_silent_family,
    511     "optional silent family", opt_silent_family_brs,
    512     __arraycount(opt_silent_family_brs), true);
    513 
    514 struct pbranch opt_family = PBRANCH_INITIALIZER(&opt_family,
    515     "opt-family", opt_family_brs, __arraycount(opt_family_brs), true);
    516 
    517 struct piface iface_start = PIFACE_INITIALIZER(&iface_start,
    518     "iface-opt-family", NULL, "if", &opt_clone.pb_parser);
    519 
    520 struct piface iface_only = PIFACE_INITIALIZER(&iface_only, "iface",
    521     media_status_exec, "if", NULL);
    522 
    523 static struct parser *
    524 init_parser(void)
    525 {
    526 	if (parser_init(&iface_opt_family_only.pif_parser) == -1)
    527 		err(EXIT_FAILURE, "parser_init(iface_opt_family_only)");
    528 	if (parser_init(&iface_only.pif_parser) == -1)
    529 		err(EXIT_FAILURE, "parser_init(iface_only)");
    530 	if (parser_init(&iface_start.pif_parser) == -1)
    531 		err(EXIT_FAILURE, "parser_init(iface_start)");
    532 
    533 	return &iface_start.pif_parser;
    534 }
    535 
    536 static int
    537 no_cmds_exec(prop_dictionary_t env, prop_dictionary_t xenv)
    538 {
    539 	const char *ifname;
    540 	unsigned short ignore;
    541 
    542 	/* ifname == NULL is ok.  It indicates 'ifconfig -a'. */
    543 	if ((ifname = getifname(env)) == NULL)
    544 		;
    545 	else if (getifflags(env, xenv, &ignore) == -1)
    546 		err(EXIT_FAILURE, "SIOCGIFFLAGS %s", ifname);
    547 
    548 	printall(ifname, env);
    549 	exit(EXIT_SUCCESS);
    550 }
    551 
    552 static int
    553 media_status_exec(prop_dictionary_t env, prop_dictionary_t xenv)
    554 {
    555 	const char *ifname;
    556 	unsigned short ignore;
    557 
    558 	/* ifname == NULL is ok.  It indicates 'ifconfig -a'. */
    559 	if ((ifname = getifname(env)) == NULL)
    560 		;
    561 	else if (getifflags(env, xenv, &ignore) == -1)
    562 		err(EXIT_FAILURE, "SIOCGIFFLAGS %s", ifname);
    563 
    564 	exit(carrier(env));
    565 }
    566 
    567 int
    568 main(int argc, char **argv)
    569 {
    570 	const struct afswtch *afp;
    571 	int af, aflag = 0, Cflag = 0, s;
    572 	struct match match[32];
    573 	size_t nmatch;
    574 	struct parser *start;
    575 	int ch, narg = 0, rc;
    576 	prop_dictionary_t env, xenv;
    577 	const char *ifname;
    578 	struct ifcapreq ifcr;
    579 
    580 	memset(match, 0, sizeof(match));
    581 
    582 	start = init_parser();
    583 
    584 	/* Parse command-line options */
    585 	aflag = mflag = vflag = zflag = 0;
    586 	while ((ch = getopt(argc, argv, "AabCdhlmsuvz"
    587 #ifdef INET6
    588 					"L"
    589 #endif
    590 			)) != -1) {
    591 		switch (ch) {
    592 		case 'A':
    593 			warnx("-A is deprecated");
    594 			break;
    595 
    596 		case 'a':
    597 			aflag = 1;
    598 			break;
    599 
    600 		case 'b':
    601 			bflag = 1;
    602 			break;
    603 
    604 		case 'C':
    605 			Cflag = 1;
    606 			break;
    607 
    608 		case 'd':
    609 			dflag = 1;
    610 			break;
    611 		case 'h':
    612 			hflag = 1;
    613 			break;
    614 #ifdef INET6
    615 		case 'L':
    616 			Lflag = 1;
    617 			break;
    618 #endif
    619 
    620 		case 'l':
    621 			lflag = 1;
    622 			break;
    623 
    624 		case 'm':
    625 			mflag = 1;
    626 			break;
    627 
    628 		case 's':
    629 			sflag = 1;
    630 			break;
    631 
    632 		case 'u':
    633 			uflag = 1;
    634 			break;
    635 
    636 		case 'v':
    637 			vflag = 1;
    638 			break;
    639 
    640 		case 'z':
    641 			zflag = 1;
    642 			break;
    643 
    644 
    645 		default:
    646 			usage();
    647 			/* NOTREACHED */
    648 		}
    649 		switch (ch) {
    650 		case 'a':
    651 			start = &opt_family_only.pb_parser;
    652 			break;
    653 
    654 #ifdef INET6
    655 		case 'L':
    656 #endif
    657 		case 'm':
    658 		case 'v':
    659 		case 'z':
    660 			if (start != &opt_family_only.pb_parser)
    661 				start = &iface_opt_family_only.pif_parser;
    662 			break;
    663 		case 'C':
    664 			start = &cloneterm.pt_parser;
    665 			break;
    666 		case 'l':
    667 			start = &no_cmds.pt_parser;
    668 			break;
    669 		case 's':
    670 			if (start != &no_cmds.pt_parser &&
    671 			    start != &opt_family_only.pb_parser)
    672 				start = &iface_only.pif_parser;
    673 			break;
    674 		default:
    675 			break;
    676 		}
    677 	}
    678 	argc -= optind;
    679 	argv += optind;
    680 
    681 	/*
    682 	 * -l means "list all interfaces", and is mutally exclusive with
    683 	 * all other flags/commands.
    684 	 *
    685 	 * -C means "list all names of cloners", and it mutually exclusive
    686 	 * with all other flags/commands.
    687 	 *
    688 	 * -a means "print status of all interfaces".
    689 	 */
    690 	if ((lflag || Cflag) && (aflag || mflag || vflag || zflag))
    691 		usage();
    692 #ifdef INET6
    693 	if ((lflag || Cflag) && Lflag)
    694 		usage();
    695 #endif
    696 	if (lflag && Cflag)
    697 		usage();
    698 
    699 	nmatch = __arraycount(match);
    700 
    701 	rc = parse(argc, argv, start, match, &nmatch, &narg);
    702 	if (rc != 0)
    703 		usage();
    704 
    705 	if ((xenv = prop_dictionary_create()) == NULL)
    706 		err(EXIT_FAILURE, "%s: prop_dictionary_create", __func__);
    707 
    708 	if (matches_exec(match, xenv, nmatch) == -1)
    709 		err(EXIT_FAILURE, "exec_matches");
    710 
    711 	argc -= narg;
    712 	argv += narg;
    713 
    714 	env = (nmatch > 0) ? match[(int)nmatch - 1].m_env : NULL;
    715 	if (env == NULL)
    716 		env = xenv;
    717 	else
    718 		env = prop_dictionary_augment(env, xenv);
    719 
    720 	/* Process any media commands that may have been issued. */
    721 	process_media_commands(env);
    722 
    723 	af = getaf(env);
    724 	switch (af) {
    725 #ifndef INET_ONLY
    726 	case AF_APPLETALK:
    727 		checkatrange(&at_addreq.ifra_addr);
    728 		break;
    729 #endif	/* INET_ONLY */
    730 	default:
    731 		break;
    732 	case -1:
    733 		af = AF_INET;
    734 		break;
    735 	}
    736 
    737 	if ((s = getsock(af)) == -1)
    738 		err(EXIT_FAILURE, "%s: getsock", __func__);
    739 
    740 	if ((ifname = getifname(env)) == NULL)
    741 		err(EXIT_FAILURE, "%s: getifname", __func__);
    742 
    743 	if ((afp = lookup_af_bynum(af)) == NULL)
    744 		errx(EXIT_FAILURE, "%s: lookup_af_bynum", __func__);
    745 
    746 	if (afp->af_addr_commit != NULL) {
    747 		(*afp->af_addr_commit)(env);
    748 	} else {
    749 		if (clearaddr) {
    750 			estrlcpy(afp->af_ridreq, ifname, IFNAMSIZ);
    751 			if (ioctl(s, afp->af_difaddr, afp->af_ridreq) == -1)
    752 				err(EXIT_FAILURE, "SIOCDIFADDR");
    753 		}
    754 		if (newaddr > 0) {
    755 			estrlcpy(afp->af_addreq, ifname, IFNAMSIZ);
    756 			if (ioctl(s, afp->af_aifaddr, afp->af_addreq) == -1)
    757 				warn("SIOCAIFADDR");
    758 			else if (check_up_state < 0)
    759 				check_up_state = 1;
    760 		}
    761 	}
    762 
    763 	do_setifpreference(env);
    764 	if (prop_dictionary_get(env, "ifcap") != NULL) {
    765 		memset(&ifcr, 0, sizeof(ifcr));
    766 		estrlcpy(ifcr.ifcr_name, ifname, sizeof(ifcr.ifcr_name));
    767 		if (ioctl(s, SIOCSIFCAP, &ifcr) == -1)
    768 			err(EXIT_FAILURE, "SIOCSIFCAP");
    769 	}
    770 
    771 	if (check_up_state == 1)
    772 		check_ifflags_up(ifname);
    773 
    774 	exit(EXIT_SUCCESS);
    775 }
    776 
    777 const struct afswtch *
    778 lookup_af_bynum(int afnum)
    779 {
    780 	const struct afswtch *a;
    781 
    782 	for (a = afs; a->af_name != NULL; a++)
    783 		if (a->af_af == afnum)
    784 			return (a);
    785 	return (NULL);
    786 }
    787 
    788 void
    789 printall(const char *ifname, prop_dictionary_t env0)
    790 {
    791 	struct ifaddrs *ifap, *ifa;
    792 	struct ifreq ifr;
    793 	const struct sockaddr_dl *sdl = NULL;
    794 	prop_dictionary_t env;
    795 	prop_string_t str;
    796 	int idx;
    797 	bool rc;
    798 	char *p;
    799 
    800 	if (env0 == NULL)
    801 		env = prop_dictionary_create();
    802 	else
    803 		env = prop_dictionary_copy_mutable(env0);
    804 
    805 	if (env == NULL)
    806 		errx(EXIT_FAILURE, "%s: prop_dictionary_copy/create", __func__);
    807 
    808 	if (getifaddrs(&ifap) != 0)
    809 		err(EXIT_FAILURE, "getifaddrs");
    810 	p = NULL;
    811 	idx = 0;
    812 	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
    813 		memset(&ifr, 0, sizeof(ifr));
    814 		estrlcpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
    815 		if (sizeof(ifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
    816 			memcpy(&ifr.ifr_addr, ifa->ifa_addr,
    817 			    ifa->ifa_addr->sa_len);
    818 		}
    819 
    820 		if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
    821 			continue;
    822 		if (ifa->ifa_addr->sa_family == AF_LINK)
    823 			sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
    824 		if (p && strcmp(p, ifa->ifa_name) == 0)
    825 			continue;
    826 		if ((str = prop_string_create_cstring(ifa->ifa_name)) == NULL)
    827 			continue;
    828 		rc = prop_dictionary_set(env, "if", str);
    829 		prop_object_release((prop_object_t)str);
    830 		if (!rc)
    831 			continue;
    832 		p = ifa->ifa_name;
    833 
    834 		if (bflag && (ifa->ifa_flags & IFF_BROADCAST) == 0)
    835 			continue;
    836 		if (dflag && (ifa->ifa_flags & IFF_UP) != 0)
    837 			continue;
    838 		if (uflag && (ifa->ifa_flags & IFF_UP) == 0)
    839 			continue;
    840 
    841 		if (sflag && carrier(env))
    842 			continue;
    843 		idx++;
    844 		/*
    845 		 * Are we just listing the interfaces?
    846 		 */
    847 		if (lflag) {
    848 			if (idx > 1)
    849 				printf(" ");
    850 			fputs(ifa->ifa_name, stdout);
    851 			continue;
    852 		}
    853 
    854 		status(sdl, env);
    855 		sdl = NULL;
    856 	}
    857 	if (lflag)
    858 		printf("\n");
    859 	prop_object_release((prop_object_t)env);
    860 	freeifaddrs(ifap);
    861 }
    862 
    863 int
    864 list_cloners(prop_dictionary_t env, prop_dictionary_t oenv)
    865 {
    866 	struct if_clonereq ifcr;
    867 	char *cp, *buf;
    868 	int idx, s;
    869 
    870 	memset(&ifcr, 0, sizeof(ifcr));
    871 
    872 	s = getsock(AF_INET);
    873 
    874 	if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1)
    875 		err(EXIT_FAILURE, "SIOCIFGCLONERS for count");
    876 
    877 	buf = malloc(ifcr.ifcr_total * IFNAMSIZ);
    878 	if (buf == NULL)
    879 		err(EXIT_FAILURE, "unable to allocate cloner name buffer");
    880 
    881 	ifcr.ifcr_count = ifcr.ifcr_total;
    882 	ifcr.ifcr_buffer = buf;
    883 
    884 	if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1)
    885 		err(EXIT_FAILURE, "SIOCIFGCLONERS for names");
    886 
    887 	/*
    888 	 * In case some disappeared in the mean time, clamp it down.
    889 	 */
    890 	if (ifcr.ifcr_count > ifcr.ifcr_total)
    891 		ifcr.ifcr_count = ifcr.ifcr_total;
    892 
    893 	for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) {
    894 		if (idx > 0)
    895 			printf(" ");
    896 		printf("%s", cp);
    897 	}
    898 
    899 	printf("\n");
    900 	free(buf);
    901 	exit(EXIT_SUCCESS);
    902 }
    903 
    904 static int
    905 clone_command(prop_dictionary_t env, prop_dictionary_t xenv)
    906 {
    907 	struct ifreq ifreq;
    908 	int s;
    909 	int64_t cmd;
    910 	const char *ifname;
    911 
    912 	if (!prop_dictionary_get_int64(env, "clonecmd", &cmd)) {
    913 		errno = ENOENT;
    914 		return -1;
    915 	}
    916 
    917 	if ((ifname = getifname(env)) == NULL)
    918 		return -1;
    919 
    920 	/* We're called early... */
    921 	s = getsock(AF_INET);
    922 
    923 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
    924 	if (ioctl(s, (unsigned long)cmd, &ifreq) == -1) {
    925 		warn("%s", __func__);
    926 		return -1;
    927 	}
    928 	return 0;
    929 }
    930 
    931 /*ARGSUSED*/
    932 int
    933 setifaddr(prop_dictionary_t env, prop_dictionary_t xenv)
    934 {
    935 	struct ifreq *ifr;		/* XXX */
    936 	const struct paddr_prefix *pfx0;
    937 	struct paddr_prefix *pfx;
    938 	prop_data_t d;
    939 	const char *ifname;
    940 	int af, s;
    941 	const struct afswtch *afp;
    942 
    943 	if ((af = getaf(env)) == -1)
    944 		af = AF_INET;
    945 
    946 	if ((afp = lookup_af_bynum(af)) == NULL)
    947 		return -1;
    948 
    949 	d = (prop_data_t)prop_dictionary_get(env, "address");
    950 	assert(d != NULL);
    951 	pfx0 = prop_data_data_nocopy(d);
    952 
    953 	if (pfx0->pfx_len != 0) {
    954 		pfx = prefixlen_to_mask(af, pfx0->pfx_len);
    955 		if (pfx == NULL)
    956 			err(EXIT_FAILURE, "prefixlen_to_mask");
    957 
    958 		if (afp->af_getaddr != NULL)
    959 			(*afp->af_getaddr)(pfx, MASK);
    960 		free(pfx);
    961 	}
    962 
    963 	if (afp->af_addr_commit != NULL)
    964 		return 0;
    965 
    966 	if ((ifname = getifname(env)) == NULL)
    967 		return -1;
    968 
    969 	/*
    970 	 * Delay the ioctl to set the interface addr until flags are all set.
    971 	 * The address interpretation may depend on the flags,
    972 	 * and the flags may change when the address is set.
    973 	 */
    974 	setaddr++;
    975 	if (newaddr == -1)
    976 		newaddr = 1;
    977 	if (doalias == 0 && afp->af_gifaddr != 0) {
    978 		ifr = (struct ifreq *)afp->af_ridreq;
    979 		estrlcpy(ifr->ifr_name, ifname, sizeof(ifr->ifr_name));
    980 		ifr->ifr_addr.sa_family = af;
    981 
    982 		if ((s = getsock(af)) == -1)
    983 			err(EXIT_FAILURE, "getsock");
    984 
    985 		if (ioctl(s, afp->af_gifaddr, afp->af_ridreq) == 0)
    986 			clearaddr = 1;
    987 		else if (errno == EADDRNOTAVAIL)
    988 			/* No address was assigned yet. */
    989 			;
    990 		else
    991 			err(EXIT_FAILURE, "SIOCGIFADDR");
    992 	}
    993 
    994 #if 0
    995 	int i;
    996 	for (i = 0; i < pfx0->pfx_addr.sa_len; i++)
    997 		printf(" %02x", ((const uint8_t *)&pfx->pfx_addr)[i]);
    998 	printf("\n");
    999 #endif
   1000 	if (afp->af_getaddr != NULL)
   1001 		(*afp->af_getaddr)(pfx0, (doalias >= 0 ? ADDR : RIDADDR));
   1002 	return 0;
   1003 }
   1004 
   1005 int
   1006 setifnetmask(prop_dictionary_t env, prop_dictionary_t xenv)
   1007 {
   1008 	const struct paddr_prefix *pfx;
   1009 	prop_data_t d;
   1010 	int af;
   1011 	const struct afswtch *afp;
   1012 
   1013 	if ((af = getaf(env)) == -1)
   1014 		af = AF_INET;
   1015 
   1016 	if ((afp = lookup_af_bynum(af)) == NULL)
   1017 		return -1;
   1018 
   1019 	d = (prop_data_t)prop_dictionary_get(env, "dstormask");
   1020 	assert(d != NULL);
   1021 	pfx = prop_data_data_nocopy(d);
   1022 
   1023 	if (!prop_dictionary_set(xenv, "netmask", (prop_object_t)d))
   1024 		return -1;
   1025 
   1026 	if (afp->af_getaddr != NULL)
   1027 		(*afp->af_getaddr)(pfx, MASK);
   1028 	return 0;
   1029 }
   1030 
   1031 int
   1032 setifbroadaddr(prop_dictionary_t env, prop_dictionary_t xenv)
   1033 {
   1034 	const struct paddr_prefix *pfx;
   1035 	prop_data_t d;
   1036 	int af;
   1037 	const struct afswtch *afp;
   1038 	unsigned short flags;
   1039 
   1040 	if ((af = getaf(env)) == -1)
   1041 		af = AF_INET;
   1042 
   1043 	if ((afp = lookup_af_bynum(af)) == NULL)
   1044 		return -1;
   1045 
   1046 	if (getifflags(env, xenv, &flags) == -1)
   1047 		err(EXIT_FAILURE, "%s: getifflags", __func__);
   1048 
   1049 	if ((flags & IFF_BROADCAST) == 0)
   1050 		errx(EXIT_FAILURE, "not a broadcast interface");
   1051 
   1052 	d = (prop_data_t)prop_dictionary_get(env, "broadcast");
   1053 	assert(d != NULL);
   1054 	pfx = prop_data_data_nocopy(d);
   1055 
   1056 	if (!prop_dictionary_set(xenv, "broadcast", (prop_object_t)d))
   1057 		return -1;
   1058 
   1059 	if (afp->af_getaddr != NULL)
   1060 		(*afp->af_getaddr)(pfx, DSTADDR);
   1061 
   1062 	return 0;
   1063 }
   1064 
   1065 #define rqtosa(__afp, __x) (&(((struct ifreq *)(__afp->__x))->ifr_addr))
   1066 
   1067 int
   1068 notealias(prop_dictionary_t env, prop_dictionary_t xenv)
   1069 {
   1070 	bool alias, delete;
   1071 	int af;
   1072 	const struct afswtch *afp;
   1073 
   1074 	if ((af = getaf(env)) == -1)
   1075 		af = AF_INET;
   1076 
   1077 	if ((afp = lookup_af_bynum(af)) == NULL)
   1078 		return -1;
   1079 
   1080 	if (afp->af_addr_commit != NULL)
   1081 		return 0;
   1082 
   1083 	if (!prop_dictionary_get_bool(env, "alias", &alias)) {
   1084 		errno = ENOENT;
   1085 		return -1;
   1086 	}
   1087 	delete = !alias;
   1088 	if (setaddr && doalias == 0 && delete)
   1089 		memcpy(rqtosa(afp, af_ridreq), rqtosa(afp, af_addreq),
   1090 		    rqtosa(afp, af_addreq)->sa_len);
   1091 	doalias = delete ? -1 : 1;
   1092 	if (delete) {
   1093 		clearaddr = 1;
   1094 		newaddr = 0;
   1095 	} else {
   1096 		clearaddr = 0;
   1097 	}
   1098 	return 0;
   1099 }
   1100 
   1101 /*ARGSUSED*/
   1102 int
   1103 notrailers(prop_dictionary_t env, prop_dictionary_t xenv)
   1104 {
   1105 	puts("Note: trailers are no longer sent, but always received");
   1106 	return 0;
   1107 }
   1108 
   1109 /*ARGSUSED*/
   1110 int
   1111 setifdstormask(prop_dictionary_t env, prop_dictionary_t xenv)
   1112 {
   1113 	const char *key;
   1114 	const struct paddr_prefix *pfx;
   1115 	prop_data_t d;
   1116 	int af, which;
   1117 	const struct afswtch *afp;
   1118 	unsigned short flags;
   1119 
   1120 	if ((af = getaf(env)) == -1)
   1121 		af = AF_INET;
   1122 
   1123 	if ((afp = lookup_af_bynum(af)) == NULL)
   1124 		return -1;
   1125 
   1126 	if (getifflags(env, xenv, &flags) == -1)
   1127 		err(EXIT_FAILURE, "%s: getifflags", __func__);
   1128 
   1129 	d = (prop_data_t)prop_dictionary_get(env, "dstormask");
   1130 	assert(d != NULL);
   1131 	pfx = prop_data_data_nocopy(d);
   1132 
   1133 	if ((flags & IFF_BROADCAST) == 0) {
   1134 		key = "dst";
   1135 		which = DSTADDR;
   1136 	} else {
   1137 		key = "netmask";
   1138 		which = MASK;
   1139 	}
   1140 
   1141 	if (!prop_dictionary_set(xenv, key, (prop_object_t)d))
   1142 		return -1;
   1143 
   1144 	if (afp->af_getaddr != NULL)
   1145 		(*afp->af_getaddr)(pfx, which);
   1146 	return 0;
   1147 }
   1148 
   1149 void
   1150 check_ifflags_up(const char *ifname)
   1151 {
   1152 	struct ifreq ifreq;
   1153 	int s;
   1154 
   1155 	s = getsock(AF_UNSPEC);
   1156 
   1157 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
   1158  	if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1)
   1159 		err(EXIT_FAILURE, "SIOCGIFFLAGS");
   1160 	if (ifreq.ifr_flags & IFF_UP)
   1161 		return;
   1162 	ifreq.ifr_flags |= IFF_UP;
   1163 	if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1)
   1164 		err(EXIT_FAILURE, "SIOCSIFFLAGS");
   1165 }
   1166 
   1167 int
   1168 setifflags(prop_dictionary_t env, prop_dictionary_t xenv)
   1169 {
   1170 	struct ifreq ifreq;
   1171 	int ifflag, s;
   1172 	prop_number_t num;
   1173 	const char *ifname;
   1174 
   1175 	s = getsock(AF_INET);
   1176 
   1177 	num = (prop_number_t)prop_dictionary_get(env, "ifflag");
   1178 	assert(num != NULL);
   1179 	if ((ifname = getifname(env)) == NULL)
   1180 		return -1;
   1181 
   1182 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
   1183  	if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1)
   1184 		return -1;
   1185 
   1186 	ifflag = (int)prop_number_integer_value(num);
   1187 
   1188 	if (ifflag < 0) {
   1189 		ifflag = -ifflag;
   1190 		if (ifflag == IFF_UP)
   1191 			check_up_state = 0;
   1192 		ifreq.ifr_flags &= ~ifflag;
   1193 	} else
   1194 		ifreq.ifr_flags |= ifflag;
   1195 
   1196 	if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1)
   1197 		return -1;
   1198 
   1199 	return 0;
   1200 }
   1201 
   1202 static int
   1203 getifcaps(prop_dictionary_t env, prop_dictionary_t oenv, struct ifcapreq *oifcr)
   1204 {
   1205 	const char *ifname;
   1206 	bool rc;
   1207 	int s;
   1208 	struct ifcapreq ifcr;
   1209 	const struct ifcapreq *tmpifcr;
   1210 	prop_data_t capdata;
   1211 
   1212 	if ((s = getsock(AF_UNSPEC)) == -1)
   1213 		return -1;
   1214 
   1215 	if ((ifname = getifname(env)) == NULL)
   1216 		return -1;
   1217 
   1218 	capdata = (prop_data_t)prop_dictionary_get(env, "ifcaps");
   1219 
   1220 	if (capdata != NULL) {
   1221 		tmpifcr = prop_data_data_nocopy(capdata);
   1222 		*oifcr = *tmpifcr;
   1223 		return 0;
   1224 	}
   1225 
   1226 	estrlcpy(ifcr.ifcr_name, ifname, sizeof(ifcr.ifcr_name));
   1227 	(void)ioctl(s, SIOCGIFCAP, &ifcr);
   1228 	*oifcr = ifcr;
   1229 
   1230 	capdata = prop_data_create_data(&ifcr, sizeof(ifcr));
   1231 
   1232 	rc = prop_dictionary_set(oenv, "ifcaps", capdata);
   1233 
   1234 	prop_object_release((prop_object_t)capdata);
   1235 
   1236 	if (!rc)
   1237 		return -1;
   1238 
   1239 	return 0;
   1240 }
   1241 
   1242 static int
   1243 setifcaps(prop_dictionary_t env, prop_dictionary_t oenv)
   1244 {
   1245 	int ifcap, s;
   1246 	prop_number_t num;
   1247 	prop_data_t capdata;
   1248 	const char *ifname;
   1249 	struct ifcapreq ifcr;
   1250 
   1251 	s = getsock(AF_INET);
   1252 
   1253 	num = (prop_number_t)prop_dictionary_get(env, "ifcap");
   1254 	assert(num != NULL);
   1255 	if ((ifname = getifname(env)) == NULL)
   1256 		return -1;
   1257 	ifcap = (int)prop_number_integer_value(num);
   1258 
   1259 	if (getifcaps(env, oenv, &ifcr) == -1)
   1260 		return -1;
   1261 
   1262 	if (ifcap < 0) {
   1263 		ifcap = -ifcap;
   1264 		ifcr.ifcr_capenable &= ~ifcap;
   1265 	} else
   1266 		ifcr.ifcr_capenable |= ifcap;
   1267 
   1268 	if ((capdata = prop_data_create_data(&ifcr, sizeof(ifcr))) == NULL)
   1269 		return -1;
   1270 
   1271 	if (!prop_dictionary_set(oenv, "ifcaps", capdata))
   1272 		return -1;
   1273 
   1274 	return 0;
   1275 }
   1276 
   1277 static int
   1278 setifmetric(prop_dictionary_t env, prop_dictionary_t xenv)
   1279 {
   1280 	struct ifreq ifr;
   1281 	prop_number_t num;
   1282 	const char *ifname;
   1283 	int s;
   1284 
   1285 	if ((s = getsock(AF_UNSPEC)) == -1)
   1286 		return -1;
   1287 
   1288 	if ((ifname = getifname(env)) == NULL)
   1289 		return -1;
   1290 
   1291 	num = (prop_number_t)prop_dictionary_get(env, "metric");
   1292 	assert(num != NULL);
   1293 
   1294 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1295 	ifr.ifr_metric = (int)prop_number_integer_value(num);
   1296 	if (ioctl(s, SIOCSIFMETRIC, &ifr) == -1)
   1297 		warn("SIOCSIFMETRIC");
   1298 	return 0;
   1299 }
   1300 
   1301 static void
   1302 do_setifpreference(prop_dictionary_t env)
   1303 {
   1304 	prop_number_t num;
   1305 	struct if_addrprefreq ifap;
   1306 	int af, s;
   1307 	const char *ifname;
   1308 	const struct afswtch *afp;
   1309 	prop_data_t d;
   1310 	const struct paddr_prefix *pfx;
   1311 
   1312 	if ((af = getaf(env)) == -1)
   1313 		af = AF_INET;
   1314 
   1315 	if ((afp = lookup_af_bynum(af)) == NULL)
   1316 		errx(EXIT_FAILURE, "%s: lookup_af_bynum", __func__);
   1317 
   1318 	num = (prop_number_t)prop_dictionary_get(env, "preference");
   1319 	if (num == NULL)
   1320 		return;
   1321 
   1322 	d = (prop_data_t)prop_dictionary_get(env, "address");
   1323 	assert(d != NULL);
   1324 
   1325 	pfx = prop_data_data_nocopy(d);
   1326 
   1327 	s = getsock(AF_UNSPEC);
   1328 
   1329 	if ((ifname = getifname(env)) == NULL)
   1330 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1331 
   1332 	strlcpy(ifap.ifap_name, ifname, sizeof(ifap.ifap_name));
   1333 	ifap.ifap_preference = (int16_t)prop_number_integer_value(num);
   1334 	memcpy(&ifap.ifap_addr, &pfx->pfx_addr,
   1335 	    MIN(sizeof(ifap.ifap_addr), pfx->pfx_addr.sa_len));
   1336 	if (ioctl(s, SIOCSIFADDRPREF, &ifap) == -1)
   1337 		warn("SIOCSIFADDRPREF");
   1338 }
   1339 
   1340 static int
   1341 setifmtu(prop_dictionary_t env, prop_dictionary_t xenv)
   1342 {
   1343 	prop_number_t num;
   1344 	const char *ifname;
   1345 	struct ifreq ifr;
   1346 	int s;
   1347 
   1348 	if ((s = getsock(AF_UNSPEC)) == -1)
   1349 		return -1;
   1350 
   1351 	if ((ifname = getifname(env)) == NULL)
   1352 		return -1;
   1353 
   1354 	num = (prop_number_t)prop_dictionary_get(env, "mtu");
   1355 	assert(num != NULL);
   1356 
   1357 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1358 	ifr.ifr_mtu = (int)prop_number_integer_value(num);
   1359 	if (ioctl(s, SIOCSIFMTU, &ifr) == -1)
   1360 		warn("SIOCSIFMTU");
   1361 
   1362 	return 0;
   1363 }
   1364 
   1365 static void
   1366 media_error(int type, const char *val, const char *opt)
   1367 {
   1368 	errx(EXIT_FAILURE, "unknown %s media %s: %s",
   1369 		get_media_type_string(type), opt, val);
   1370 }
   1371 
   1372 void
   1373 init_current_media(prop_dictionary_t env, prop_dictionary_t oenv)
   1374 {
   1375 	struct ifmediareq ifmr;
   1376 	prop_bool_t b;
   1377 	int s;
   1378 	const char *ifname;
   1379 
   1380 	if ((s = getsock(AF_UNSPEC)) == -1)
   1381 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1382 
   1383 	if ((ifname = getifname(env)) == NULL)
   1384 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1385 
   1386 	/*
   1387 	 * If we have not yet done so, grab the currently-selected
   1388 	 * media.
   1389 	 */
   1390 
   1391 	if (prop_dictionary_get(env, "initmedia") == NULL) {
   1392 		memset(&ifmr, 0, sizeof(ifmr));
   1393 		estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1394 
   1395 		if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1396 			/*
   1397 			 * If we get E2BIG, the kernel is telling us
   1398 			 * that there are more, so we can ignore it.
   1399 			 */
   1400 			if (errno != E2BIG)
   1401 				err(EXIT_FAILURE, "SIOCGIFMEDIA");
   1402 		}
   1403 
   1404 		if ((b = prop_bool_create(true)) == NULL)
   1405 			err(EXIT_FAILURE, "%s: prop_bool_create", __func__);
   1406 
   1407 		if (!prop_dictionary_set(oenv, "initmedia", (prop_object_t)b))
   1408 			err(EXIT_FAILURE, "%s: prop_dictionary_set", __func__);
   1409 		prop_object_release((prop_object_t)b);
   1410 		media_current = ifmr.ifm_current;
   1411 	}
   1412 
   1413 	/* Sanity. */
   1414 	if (IFM_TYPE(media_current) == 0)
   1415 		errx(EXIT_FAILURE, "%s: no link type?", ifname);
   1416 }
   1417 
   1418 void
   1419 process_media_commands(prop_dictionary_t env)
   1420 {
   1421 	struct ifreq ifr;
   1422 	const char *ifname;
   1423 	int s;
   1424 
   1425 	if ((s = getsock(AF_UNSPEC)) == -1)
   1426 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1427 
   1428 	if (prop_dictionary_get(env, "media") == NULL &&
   1429 	    prop_dictionary_get(env, "mediaopt") == NULL &&
   1430 	    prop_dictionary_get(env, "unmediaopt") == NULL &&
   1431 	    prop_dictionary_get(env, "mediamode") == NULL) {
   1432 		/* Nothing to do. */
   1433 		return;
   1434 	}
   1435 
   1436 	if ((ifname = getifname(env)) == NULL)
   1437 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1438 
   1439 	/*
   1440 	 * Media already set up, and commands sanity-checked.  Set/clear
   1441 	 * any options, and we're ready to go.
   1442 	 */
   1443 	media_current |= mediaopt_set;
   1444 	media_current &= ~mediaopt_clear;
   1445 
   1446 	memset(&ifr, 0, sizeof(ifr));
   1447 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1448 	ifr.ifr_media = media_current;
   1449 
   1450 	if (ioctl(s, SIOCSIFMEDIA, &ifr) == -1)
   1451 		err(EXIT_FAILURE, "SIOCSIFMEDIA");
   1452 }
   1453 
   1454 int
   1455 setmedia(prop_dictionary_t env, prop_dictionary_t xenv)
   1456 {
   1457 	int type, subtype, inst;
   1458 	prop_data_t data;
   1459 	char *val;
   1460 
   1461 	init_current_media(env, xenv);
   1462 
   1463 	data = (prop_data_t)prop_dictionary_get(env, "media");
   1464 	assert(data != NULL);
   1465 
   1466 	/* Only one media command may be given. */
   1467 	/* Must not come after mode commands */
   1468 	/* Must not come after mediaopt commands */
   1469 
   1470 	/*
   1471 	 * No need to check if `instance' has been issued; setmediainst()
   1472 	 * craps out if `media' has not been specified.
   1473 	 */
   1474 
   1475 	type = IFM_TYPE(media_current);
   1476 	inst = IFM_INST(media_current);
   1477 
   1478 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1479 	if (val == NULL)
   1480 		return -1;
   1481 
   1482 	/* Look up the subtype. */
   1483 	subtype = get_media_subtype(type, val);
   1484 	if (subtype == -1)
   1485 		media_error(type, val, "subtype");
   1486 
   1487 	/* Build the new current media word. */
   1488 	media_current = IFM_MAKEWORD(type, subtype, 0, inst);
   1489 
   1490 	/* Media will be set after other processing is complete. */
   1491 	return 0;
   1492 }
   1493 
   1494 int
   1495 setmediaopt(prop_dictionary_t env, prop_dictionary_t xenv)
   1496 {
   1497 	char *invalid;
   1498 	prop_data_t data;
   1499 	char *val;
   1500 
   1501 	init_current_media(env, xenv);
   1502 
   1503 	data = (prop_data_t)prop_dictionary_get(env, "mediaopt");
   1504 	assert(data != NULL);
   1505 
   1506 	/* Can only issue `mediaopt' once. */
   1507 	/* Can't issue `mediaopt' if `instance' has already been issued. */
   1508 
   1509 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1510 	if (val == NULL)
   1511 		return -1;
   1512 
   1513 	mediaopt_set = get_media_options(media_current, val, &invalid);
   1514 	free(val);
   1515 	if (mediaopt_set == -1)
   1516 		media_error(media_current, invalid, "option");
   1517 
   1518 	/* Media will be set after other processing is complete. */
   1519 	return 0;
   1520 }
   1521 
   1522 int
   1523 unsetmediaopt(prop_dictionary_t env, prop_dictionary_t xenv)
   1524 {
   1525 	char *invalid, *val;
   1526 	prop_data_t data;
   1527 
   1528 	init_current_media(env, xenv);
   1529 
   1530 	data = (prop_data_t)prop_dictionary_get(env, "unmediaopt");
   1531 	if (data == NULL) {
   1532 		errno = ENOENT;
   1533 		return -1;
   1534 	}
   1535 
   1536 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1537 	if (val == NULL)
   1538 		return -1;
   1539 
   1540 	/*
   1541 	 * No need to check for A_MEDIAINST, since the test for A_MEDIA
   1542 	 * implicitly checks for A_MEDIAINST.
   1543 	 */
   1544 
   1545 	mediaopt_clear = get_media_options(media_current, val, &invalid);
   1546 	free(val);
   1547 	if (mediaopt_clear == -1)
   1548 		media_error(media_current, invalid, "option");
   1549 
   1550 	/* Media will be set after other processing is complete. */
   1551 	return 0;
   1552 }
   1553 
   1554 int
   1555 setmediainst(prop_dictionary_t env, prop_dictionary_t xenv)
   1556 {
   1557 	int type, subtype, options, inst;
   1558 	prop_number_t num;
   1559 
   1560 	init_current_media(env, xenv);
   1561 
   1562 	num = (prop_number_t)prop_dictionary_get(env, "mediainst");
   1563 	assert(num != NULL);
   1564 
   1565 	/* Can only issue `instance' once. */
   1566 	/* Must have already specified `media' */
   1567 
   1568 	type = IFM_TYPE(media_current);
   1569 	subtype = IFM_SUBTYPE(media_current);
   1570 	options = IFM_OPTIONS(media_current);
   1571 
   1572 	inst = (int)prop_number_integer_value(num);
   1573 
   1574 	media_current = IFM_MAKEWORD(type, subtype, options, inst);
   1575 
   1576 	/* Media will be set after other processing is complete. */
   1577 	return 0;
   1578 }
   1579 
   1580 int
   1581 setmediamode(prop_dictionary_t env, prop_dictionary_t xenv)
   1582 {
   1583 	int type, subtype, options, inst, mode;
   1584 	prop_data_t data;
   1585 	char *val;
   1586 
   1587 	init_current_media(env, xenv);
   1588 
   1589 	data = (prop_data_t)prop_dictionary_get(env, "mediamode");
   1590 	assert(data != NULL);
   1591 
   1592 	type = IFM_TYPE(media_current);
   1593 	subtype = IFM_SUBTYPE(media_current);
   1594 	options = IFM_OPTIONS(media_current);
   1595 	inst = IFM_INST(media_current);
   1596 
   1597 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1598 	if (val == NULL)
   1599 		return -1;
   1600 
   1601 	mode = get_media_mode(type, val);
   1602 	if (mode == -1)
   1603 		media_error(type, val, "mode");
   1604 
   1605 	free(val);
   1606 
   1607 	media_current = IFM_MAKEWORD(type, subtype, options, inst) | mode;
   1608 
   1609 	/* Media will be set after other processing is complete. */
   1610 	return 0;
   1611 }
   1612 
   1613 void
   1614 print_media_word(int ifmw, const char *opt_sep)
   1615 {
   1616 	const char *str;
   1617 
   1618 	printf("%s", get_media_subtype_string(ifmw));
   1619 
   1620 	/* Find mode. */
   1621 	if (IFM_MODE(ifmw) != 0) {
   1622 		str = get_media_mode_string(ifmw);
   1623 		if (str != NULL)
   1624 			printf(" mode %s", str);
   1625 	}
   1626 
   1627 	/* Find options. */
   1628 	for (; (str = get_media_option_string(&ifmw)) != NULL; opt_sep = ",")
   1629 		printf("%s%s", opt_sep, str);
   1630 
   1631 	if (IFM_INST(ifmw) != 0)
   1632 		printf(" instance %d", IFM_INST(ifmw));
   1633 }
   1634 
   1635 int
   1636 carrier(prop_dictionary_t env)
   1637 {
   1638 	struct ifmediareq ifmr;
   1639 	int s;
   1640 	const char *ifname;
   1641 
   1642 	if ((s = getsock(AF_UNSPEC)) == -1)
   1643 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1644 
   1645 	if ((ifname = getifname(env)) == NULL)
   1646 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1647 
   1648 	(void) memset(&ifmr, 0, sizeof(ifmr));
   1649 	estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1650 
   1651 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1652 		/*
   1653 		 * Interface doesn't support SIOC{G,S}IFMEDIA;
   1654 		 * assume ok.
   1655 		 */
   1656 		return EXIT_SUCCESS;
   1657 	}
   1658 	if ((ifmr.ifm_status & IFM_AVALID) == 0) {
   1659 		/*
   1660 		 * Interface doesn't report media-valid status.
   1661 		 * assume ok.
   1662 		 */
   1663 		return EXIT_SUCCESS;
   1664 	}
   1665 	/* otherwise, return ok for active, not-ok if not active. */
   1666 	if (ifmr.ifm_status & IFM_ACTIVE)
   1667 		return EXIT_SUCCESS;
   1668 	else
   1669 		return EXIT_FAILURE;
   1670 }
   1671 
   1672 const int ifm_status_valid_list[] = IFM_STATUS_VALID_LIST;
   1673 
   1674 const struct ifmedia_status_description ifm_status_descriptions[] =
   1675     IFM_STATUS_DESCRIPTIONS;
   1676 
   1677 /*
   1678  * Print the status of the interface.  If an address family was
   1679  * specified, show it and it only; otherwise, show them all.
   1680  */
   1681 void
   1682 status(const struct sockaddr_dl *sdl, prop_dictionary_t env)
   1683 {
   1684 	struct ifmediareq ifmr;
   1685 	struct ifdatareq ifdr;
   1686 	struct ifreq ifr;
   1687 	int *media_list, i;
   1688 	char hbuf[NI_MAXHOST];
   1689 	char fbuf[BUFSIZ];
   1690 	int af, s;
   1691 	const char *ifname;
   1692 	struct ifcapreq ifcr;
   1693 	unsigned short flags;
   1694 	const struct afswtch *afp;
   1695 
   1696 	if ((af = getaf(env)) == -1) {
   1697 		afp = NULL;
   1698 		af = AF_UNSPEC;
   1699 	} else
   1700 		afp = lookup_af_bynum(af);
   1701 
   1702 	if ((s = getsock(af)) == -1)
   1703 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1704 
   1705 	if ((ifname = getifinfo(env, env, &flags)) == NULL)
   1706 		err(EXIT_FAILURE, "%s: getifinfo", __func__);
   1707 
   1708 	(void)snprintb(fbuf, sizeof(fbuf), IFFBITS, flags);
   1709 	printf("%s: flags=%s", ifname, &fbuf[2]);
   1710 
   1711 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1712 	if (ioctl(s, SIOCGIFMETRIC, &ifr) == -1)
   1713 		warn("SIOCGIFMETRIC %s", ifr.ifr_name);
   1714 	else if (ifr.ifr_metric != 0)
   1715 		printf(" metric %d", ifr.ifr_metric);
   1716 
   1717 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1718 	if (ioctl(s, SIOCGIFMTU, &ifr) != -1 && ifr.ifr_mtu != 0)
   1719 		printf(" mtu %d", ifr.ifr_mtu);
   1720 	printf("\n");
   1721 
   1722 	if (getifcaps(env, env, &ifcr) == -1)
   1723 		err(EXIT_FAILURE, "%s: getifcaps", __func__);
   1724 
   1725 	if (ifcr.ifcr_capabilities != 0) {
   1726 		(void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS,
   1727 		    ifcr.ifcr_capabilities);
   1728 		printf("\tcapabilities=%s\n", &fbuf[2]);
   1729 		(void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS,
   1730 		    ifcr.ifcr_capenable);
   1731 		printf("\tenabled=%s\n", &fbuf[2]);
   1732 	}
   1733 
   1734 	ieee80211_status(env);
   1735 	vlan_status(env);
   1736 #ifndef INET_ONLY
   1737 	carp_status(env);
   1738 #endif
   1739 	tunnel_status(env);
   1740 	agr_status(env);
   1741 
   1742 	if (sdl != NULL &&
   1743 	    getnameinfo((const struct sockaddr *)sdl, sdl->sdl_len,
   1744 		hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) == 0 &&
   1745 	    hbuf[0] != '\0')
   1746 		printf("\taddress: %s\n", hbuf);
   1747 
   1748 	(void) memset(&ifmr, 0, sizeof(ifmr));
   1749 	estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1750 
   1751 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1752 		/*
   1753 		 * Interface doesn't support SIOC{G,S}IFMEDIA.
   1754 		 */
   1755 		goto iface_stats;
   1756 	}
   1757 
   1758 	if (ifmr.ifm_count == 0) {
   1759 		warnx("%s: no media types?", ifname);
   1760 		goto iface_stats;
   1761 	}
   1762 
   1763 	media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
   1764 	if (media_list == NULL)
   1765 		err(EXIT_FAILURE, "malloc");
   1766 	ifmr.ifm_ulist = media_list;
   1767 
   1768 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1)
   1769 		err(EXIT_FAILURE, "SIOCGIFMEDIA");
   1770 
   1771 	printf("\tmedia: %s ", get_media_type_string(ifmr.ifm_current));
   1772 	print_media_word(ifmr.ifm_current, " ");
   1773 	if (ifmr.ifm_active != ifmr.ifm_current) {
   1774 		printf(" (");
   1775 		print_media_word(ifmr.ifm_active, " ");
   1776 		printf(")");
   1777 	}
   1778 	printf("\n");
   1779 
   1780 	if (ifmr.ifm_status & IFM_STATUS_VALID) {
   1781 		const struct ifmedia_status_description *ifms;
   1782 		int bitno, found = 0;
   1783 
   1784 		printf("\tstatus: ");
   1785 		for (bitno = 0; ifm_status_valid_list[bitno] != 0; bitno++) {
   1786 			for (ifms = ifm_status_descriptions;
   1787 			     ifms->ifms_valid != 0; ifms++) {
   1788 				if (ifms->ifms_type !=
   1789 				      IFM_TYPE(ifmr.ifm_current) ||
   1790 				    ifms->ifms_valid !=
   1791 				      ifm_status_valid_list[bitno])
   1792 					continue;
   1793 				printf("%s%s", found ? ", " : "",
   1794 				    IFM_STATUS_DESC(ifms, ifmr.ifm_status));
   1795 				found = 1;
   1796 
   1797 				/*
   1798 				 * For each valid indicator bit, there's
   1799 				 * only one entry for each media type, so
   1800 				 * terminate the inner loop now.
   1801 				 */
   1802 				break;
   1803 			}
   1804 		}
   1805 
   1806 		if (found == 0)
   1807 			printf("unknown");
   1808 		printf("\n");
   1809 	}
   1810 
   1811 	if (mflag) {
   1812 		int type, printed_type;
   1813 
   1814 		for (type = IFM_NMIN; type <= IFM_NMAX; type += IFM_NMIN) {
   1815 			for (i = 0, printed_type = 0; i < ifmr.ifm_count; i++) {
   1816 				if (IFM_TYPE(media_list[i]) != type)
   1817 					continue;
   1818 				if (printed_type == 0) {
   1819 					printf("\tsupported %s media:\n",
   1820 					    get_media_type_string(type));
   1821 					printed_type = 1;
   1822 				}
   1823 				printf("\t\tmedia ");
   1824 				print_media_word(media_list[i], " mediaopt ");
   1825 				printf("\n");
   1826 			}
   1827 		}
   1828 	}
   1829 
   1830 	free(media_list);
   1831 
   1832  iface_stats:
   1833 	if (!vflag && !zflag)
   1834 		goto proto_status;
   1835 
   1836 	estrlcpy(ifdr.ifdr_name, ifname, sizeof(ifdr.ifdr_name));
   1837 
   1838 	if (ioctl(s, zflag ? SIOCZIFDATA:SIOCGIFDATA, &ifdr) == -1) {
   1839 		err(EXIT_FAILURE, zflag ? "SIOCZIFDATA" : "SIOCGIFDATA");
   1840 	} else {
   1841 		struct if_data * const ifi = &ifdr.ifdr_data;
   1842 		char buf[5];
   1843 
   1844 #define	PLURAL(n)	((n) == 1 ? "" : "s")
   1845 #define PLURALSTR(s)	((atof(s)) == 1.0 ? "" : "s")
   1846 		printf("\tinput: %llu packet%s, ",
   1847 		    (unsigned long long) ifi->ifi_ipackets,
   1848 		    PLURAL(ifi->ifi_ipackets));
   1849 		if (hflag) {
   1850 			(void) humanize_number(buf, sizeof(buf),
   1851 			    (int64_t) ifi->ifi_ibytes, "", HN_AUTOSCALE,
   1852 			    HN_NOSPACE | HN_DECIMAL);
   1853 			printf("%s byte%s", buf,
   1854 			    PLURALSTR(buf));
   1855 		} else
   1856 			printf("%llu byte%s",
   1857 			    (unsigned long long) ifi->ifi_ibytes,
   1858 		            PLURAL(ifi->ifi_ibytes));
   1859 		if (ifi->ifi_imcasts)
   1860 			printf(", %llu multicast%s",
   1861 			    (unsigned long long) ifi->ifi_imcasts,
   1862 			    PLURAL(ifi->ifi_imcasts));
   1863 		if (ifi->ifi_ierrors)
   1864 			printf(", %llu error%s",
   1865 			    (unsigned long long) ifi->ifi_ierrors,
   1866 			    PLURAL(ifi->ifi_ierrors));
   1867 		if (ifi->ifi_iqdrops)
   1868 			printf(", %llu queue drop%s",
   1869 			    (unsigned long long) ifi->ifi_iqdrops,
   1870 			    PLURAL(ifi->ifi_iqdrops));
   1871 		if (ifi->ifi_noproto)
   1872 			printf(", %llu unknown protocol",
   1873 			    (unsigned long long) ifi->ifi_noproto);
   1874 		printf("\n\toutput: %llu packet%s, ",
   1875 		    (unsigned long long) ifi->ifi_opackets,
   1876 		    PLURAL(ifi->ifi_opackets));
   1877 		if (hflag) {
   1878 			(void) humanize_number(buf, sizeof(buf),
   1879 			    (int64_t) ifi->ifi_obytes, "", HN_AUTOSCALE,
   1880 			    HN_NOSPACE | HN_DECIMAL);
   1881 			printf("%s byte%s", buf,
   1882 			    PLURALSTR(buf));
   1883 		} else
   1884 			printf("%llu byte%s",
   1885 			    (unsigned long long) ifi->ifi_obytes,
   1886 			    PLURAL(ifi->ifi_obytes));
   1887 		if (ifi->ifi_omcasts)
   1888 			printf(", %llu multicast%s",
   1889 			    (unsigned long long) ifi->ifi_omcasts,
   1890 			    PLURAL(ifi->ifi_omcasts));
   1891 		if (ifi->ifi_oerrors)
   1892 			printf(", %llu error%s",
   1893 			    (unsigned long long) ifi->ifi_oerrors,
   1894 			    PLURAL(ifi->ifi_oerrors));
   1895 		if (ifi->ifi_collisions)
   1896 			printf(", %llu collision%s",
   1897 			    (unsigned long long) ifi->ifi_collisions,
   1898 			    PLURAL(ifi->ifi_collisions));
   1899 		printf("\n");
   1900 #undef PLURAL
   1901 #undef PLURALSTR
   1902 	}
   1903 
   1904 	ieee80211_statistics(env);
   1905 
   1906  proto_status:
   1907 
   1908 	if (afp != NULL)
   1909 		(*afp->af_status)(env, env, true);
   1910 	else for (afp = afs; afp->af_name != NULL; afp++)
   1911 		(*afp->af_status)(env, env, false);
   1912 }
   1913 
   1914 int
   1915 setifprefixlen(prop_dictionary_t env, prop_dictionary_t xenv)
   1916 {
   1917 	const char *ifname;
   1918 	prop_number_t num;
   1919 	int af;
   1920 	const struct afswtch *afp;
   1921 	unsigned short flags;
   1922 	struct paddr_prefix *pfx;
   1923 	prop_data_t d;
   1924 
   1925 	if ((af = getaf(env)) == -1)
   1926 		af = AF_INET;
   1927 
   1928 	if ((afp = lookup_af_bynum(af)) == NULL)
   1929 		return -1;
   1930 
   1931 	if ((ifname = getifinfo(env, xenv, &flags)) == NULL)
   1932 		err(EXIT_FAILURE, "getifinfo");
   1933 
   1934 	num = (prop_number_t)prop_dictionary_get(env, "prefixlen");
   1935 	assert(num != NULL);
   1936 
   1937 	pfx = prefixlen_to_mask(af, (int)prop_number_integer_value(num));
   1938 	if (pfx == NULL)
   1939 		err(EXIT_FAILURE, "prefixlen_to_mask");
   1940 
   1941 	d = prop_data_create_data(pfx,
   1942 	    offsetof(struct paddr_prefix, pfx_addr) + pfx->pfx_addr.sa_len);
   1943 	if (d == NULL)
   1944 		err(EXIT_FAILURE, "%s: prop_data_create_data", __func__);
   1945 
   1946 	if (!prop_dictionary_set(xenv, "netmask", (prop_object_t)d))
   1947 		err(EXIT_FAILURE, "%s: prop_dictionary_set", __func__);
   1948 
   1949 	if (afp->af_getaddr != NULL)
   1950 		(*afp->af_getaddr)(pfx, MASK);
   1951 
   1952 	free(pfx);
   1953 	return 0;
   1954 }
   1955 
   1956 void
   1957 usage(void)
   1958 {
   1959 	const char *progname = getprogname();
   1960 
   1961 	fprintf(stderr,
   1962 	    "usage: %s [-h] [-m] [-v] [-z] "
   1963 #ifdef INET6
   1964 		"[-L] "
   1965 #endif
   1966 		"interface\n"
   1967 		"\t[ af [ address [ dest_addr ] ] [ netmask mask ] [ prefixlen n ]\n"
   1968 		"\t\t[ alias | -alias ] ]\n"
   1969 		"\t[ up ] [ down ] [ metric n ] [ mtu n ]\n"
   1970 		"\t[ nwid network_id ] [ nwkey network_key | -nwkey ]\n"
   1971 		"\t[ list scan ]\n"
   1972 		"\t[ powersave | -powersave ] [ powersavesleep duration ]\n"
   1973 		"\t[ hidessid | -hidessid ] [ apbridge | -apbridge ]\n"
   1974 		"\t[ [ af ] tunnel src_addr dest_addr ] [ deletetunnel ]\n"
   1975 		"\t[ arp | -arp ]\n"
   1976 		"\t[ media type ] [ mediaopt opts ] [ -mediaopt opts ] "
   1977 		"[ instance minst ]\n"
   1978 		"\t[ preference n ]\n"
   1979 		"\t[ vlan n vlanif i ]\n"
   1980 		"\t[ agrport i ] [ -agrport i ]\n"
   1981 		"\t[ anycast | -anycast ] [ deprecated | -deprecated ]\n"
   1982 		"\t[ tentative | -tentative ] [ pltime n ] [ vltime n ] [ eui64 ]\n"
   1983 		"\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ]\n"
   1984 		"       %s -a [-b] [-h] [-m] [-d] [-u] [-v] [-z] [ af ]\n"
   1985 		"       %s -l [-b] [-d] [-u] [-s]\n"
   1986 		"       %s -C\n"
   1987 		"       %s interface create\n"
   1988 		"       %s interface destroy\n",
   1989 		progname, progname, progname, progname, progname, progname);
   1990 	exit(EXIT_FAILURE);
   1991 }
   1992