1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 /* 6 * Copyright (c) 1983 Regents of the University of California. 7 * All rights reserved. The Berkeley software License Agreement 8 * specifies the terms and conditions for redistribution. 9 */ 10 11 #include "defs.h" 12 #include "strings.h" 13 #include "ifconfig.h" 14 #include <compat.h> 15 #include <libdlpi.h> 16 #include <libdllink.h> 17 #include <inet/ip.h> 18 #include <inet/ipsec_impl.h> 19 20 #define LOOPBACK_IF "lo0" 21 #define NONE_STR "none" 22 #define ARP_MOD_NAME "arp" 23 #define TUN_NAME "tun" 24 #define ATUN_NAME "atun" 25 #define TUN6TO4_NAME "6to4tun" 26 #define IPMPSTUB (void *)-1 27 28 typedef struct if_flags { 29 uint64_t iff_value; 30 char *iff_name; 31 } if_flags_t; 32 33 static if_flags_t if_flags_tbl[] = { 34 { IFF_UP, "UP" }, 35 { IFF_BROADCAST, "BROADCAST" }, 36 { IFF_DEBUG, "DEBUG" }, 37 { IFF_LOOPBACK, "LOOPBACK" }, 38 { IFF_POINTOPOINT, "POINTOPOINT" }, 39 { IFF_NOTRAILERS, "NOTRAILERS" }, 40 { IFF_RUNNING, "RUNNING" }, 41 { IFF_NOARP, "NOARP" }, 42 { IFF_PROMISC, "PROMISC" }, 43 { IFF_ALLMULTI, "ALLMULTI" }, 44 { IFF_INTELLIGENT, "INTELLIGENT" }, 45 { IFF_MULTICAST, "MULTICAST" }, 46 { IFF_MULTI_BCAST, "MULTI_BCAST" }, 47 { IFF_UNNUMBERED, "UNNUMBERED" }, 48 { IFF_DHCPRUNNING, "DHCP" }, 49 { IFF_PRIVATE, "PRIVATE" }, 50 { IFF_NOXMIT, "NOXMIT" }, 51 { IFF_NOLOCAL, "NOLOCAL" }, 52 { IFF_DEPRECATED, "DEPRECATED" }, 53 { IFF_ADDRCONF, "ADDRCONF" }, 54 { IFF_ROUTER, "ROUTER" }, 55 { IFF_NONUD, "NONUD" }, 56 { IFF_ANYCAST, "ANYCAST" }, 57 { IFF_NORTEXCH, "NORTEXCH" }, 58 { IFF_IPV4, "IPv4" }, 59 { IFF_IPV6, "IPv6" }, 60 { IFF_NOFAILOVER, "NOFAILOVER" }, 61 { IFF_FAILED, "FAILED" }, 62 { IFF_STANDBY, "STANDBY" }, 63 { IFF_INACTIVE, "INACTIVE" }, 64 { IFF_OFFLINE, "OFFLINE" }, 65 { IFF_XRESOLV, "XRESOLV" }, 66 { IFF_COS_ENABLED, "CoS" }, 67 { IFF_PREFERRED, "PREFERRED" }, 68 { IFF_TEMPORARY, "TEMPORARY" }, 69 { IFF_FIXEDMTU, "FIXEDMTU" }, 70 { IFF_VIRTUAL, "VIRTUAL" }, 71 { IFF_DUPLICATE, "DUPLICATE" }, 72 { IFF_IPMP, "IPMP"} 73 }; 74 75 typedef struct { 76 const char *ia_app; 77 uint64_t ia_flag; 78 uint_t ia_tries; 79 } if_appflags_t; 80 81 static const if_appflags_t if_appflags_tbl[] = { 82 { "dhcpagent(1M)", IFF_DHCPRUNNING, 1 }, 83 { "in.ndpd(1M)", IFF_ADDRCONF, 3 }, 84 { NULL, 0, 0 } 85 }; 86 87 static struct lifreq lifr; 88 /* current interface name a particular function is accessing */ 89 static char name[LIFNAMSIZ]; 90 /* foreach interface saved name */ 91 static char origname[LIFNAMSIZ]; 92 static int setaddr; 93 94 /* 95 * Make sure the algorithm variables hold more than the sizeof an algorithm 96 * in PF_KEY. (For now, more than a uint8_t.) The NO_***_?ALG indicates that 97 * there was no algorithm requested, and in the ipsec_req that service should 98 * be disabled. (E.g. if ah_aalg remains NO_AH_AALG, then AH will be 99 * disabled on that tunnel.) 100 */ 101 #define NO_AH_AALG 256 102 #define NO_ESP_AALG 256 103 #define NO_ESP_EALG 256 104 105 int s, s4, s6; 106 int af = AF_INET; /* default address family */ 107 int debug = 0; 108 int all = 0; /* setifdhcp() needs to know this */ 109 int verbose = 0; 110 int v4compat = 0; /* Compatible printing format */ 111 112 /* 113 * Function prototypes for command functions. 114 */ 115 static int addif(char *arg, int64_t param); 116 static int inetipmp(char *arg, int64_t param); 117 static int inetplumb(char *arg, int64_t param); 118 static int inetunplumb(char *arg, int64_t param); 119 static int removeif(char *arg, int64_t param); 120 static int setdebugflag(char *arg, int64_t param); 121 static int setifaddr(char *arg, int64_t param); 122 static int setifbroadaddr(char *arg, int64_t param); 123 static int setifdstaddr(char *arg, int64_t param); 124 static int setifether(char *arg, int64_t param); 125 static int setifflags(char *arg, int64_t param); 126 static int setifindex(char *arg, int64_t param); 127 static int setifmetric(char *arg, int64_t param); 128 static int setifmtu(char *arg, int64_t param); 129 static int setifnetmask(char *arg, int64_t param); 130 static int setifprefixlen(char *arg, int64_t param); 131 static int setifrevarp(char *arg, int64_t param); 132 static int setifsubnet(char *arg, int64_t param); 133 static int setiftdst(char *arg, int64_t param); 134 static int setiftoken(char *arg, int64_t param); 135 static int setiftsrc(char *arg, int64_t param); 136 static int setverboseflag(char *arg, int64_t param); 137 static int set_tun_ah_alg(char *arg, int64_t param); 138 static int set_tun_esp_auth_alg(char *arg, int64_t param); 139 static int set_tun_esp_encr_alg(char *arg, int64_t param); 140 static int modlist(char *arg, int64_t param); 141 static int modinsert(char *arg, int64_t param); 142 static int modremove(char *arg, int64_t param); 143 static int setifgroupname(char *arg, int64_t param); 144 static int configinfo(char *arg, int64_t param); 145 static void print_config_flags(int af, uint64_t flags); 146 static void print_flags(uint64_t flags); 147 static void print_ifether(char *ifname); 148 static int set_tun_encap_limit(char *arg, int64_t param); 149 static int clr_tun_encap_limit(char *arg, int64_t param); 150 static int set_tun_hop_limit(char *arg, int64_t param); 151 static int setzone(char *arg, int64_t param); 152 static int setallzones(char *arg, int64_t param); 153 static int setifsrc(char *arg, int64_t param); 154 static int lifnum(const char *ifname); 155 156 /* 157 * Address family specific function prototypes. 158 */ 159 static void in_getaddr(char *s, struct sockaddr *saddr, int *plenp); 160 static void in_status(int force, uint64_t flags); 161 static void in_configinfo(int force, uint64_t flags); 162 static void in6_getaddr(char *s, struct sockaddr *saddr, int *plenp); 163 static void in6_status(int force, uint64_t flags); 164 static void in6_configinfo(int force, uint64_t flags); 165 166 /* 167 * Misc support functions 168 */ 169 static boolean_t ni_entry(const char *, void *); 170 static void foreachinterface(void (*func)(), int argc, char *argv[], 171 int af, int64_t onflags, int64_t offflags, 172 int64_t lifc_flags); 173 static void ifconfig(int argc, char *argv[], int af, struct lifreq *lifrp); 174 static boolean_t in_getmask(struct sockaddr_in *saddr, 175 boolean_t addr_set); 176 static int in_getprefixlen(char *addr, boolean_t slash, int plen); 177 static boolean_t in_prefixlentomask(int prefixlen, int maxlen, 178 uchar_t *mask); 179 static int settaddr(char *, int (*)(icfg_handle_t, 180 const struct sockaddr *, socklen_t)); 181 static void status(void); 182 static void ifstatus(const char *); 183 static void usage(void); 184 static int strioctl(int s, int cmd, void *buf, int buflen); 185 static int setifdhcp(const char *caller, const char *ifname, 186 int argc, char *argv[]); 187 static int ip_domux2fd(int *, int *, int *, int *, int *); 188 static int ip_plink(int, int, int, int, int); 189 static int modop(char *arg, char op); 190 static int find_all_global_interfaces(struct lifconf *lifcp, char **buf, 191 int64_t lifc_flags); 192 static int find_all_zone_interfaces(struct lifconf *lifcp, char **buf, 193 int64_t lifc_flags); 194 static int create_ipmp(const char *grname, int af, const char *ifname, 195 boolean_t implicit); 196 static int create_ipmp_peer(int af, const char *ifname); 197 static void start_ipmp_daemon(void); 198 static boolean_t ifaddr_up(ifaddrlistx_t *ifaddrp); 199 static boolean_t ifaddr_down(ifaddrlistx_t *ifaddrp); 200 201 #define max(a, b) ((a) < (b) ? (b) : (a)) 202 203 /* 204 * DHCP_EXIT_IF_FAILURE indicates that the operation failed, but if there 205 * are more interfaces to act on (i.e., ifconfig was invoked with -a), keep 206 * on going rather than exit with an error. 207 */ 208 209 #define DHCP_EXIT_IF_FAILURE -1 210 211 #define NEXTARG 0xffffff /* command takes an argument */ 212 #define OPTARG 0xfffffe /* command takes an optional argument */ 213 #define AF_ANY (-1) 214 215 /* Refer to the comments in ifconfig() on the netmask "hack" */ 216 #define NETMASK_CMD "netmask" 217 struct sockaddr_storage g_netmask; 218 enum { G_NETMASK_NIL, G_NETMASK_PENDING, G_NETMASK_SET } 219 g_netmask_set = G_NETMASK_NIL; 220 221 struct cmd { 222 char *c_name; 223 int64_t c_parameter; /* NEXTARG means next argv */ 224 int (*c_func)(char *, int64_t); 225 int c_abortonfail; /* don't continue parsing args */ 226 /* for the current interface */ 227 int c_af; /* address family restrictions */ 228 } cmds[] = { 229 { "up", IFF_UP, setifflags, 0, AF_ANY }, 230 { "down", -IFF_UP, setifflags, 0, AF_ANY }, 231 { "trailers", -IFF_NOTRAILERS, setifflags, 0, AF_ANY }, 232 { "-trailers", IFF_NOTRAILERS, setifflags, 0, AF_ANY }, 233 { "arp", -IFF_NOARP, setifflags, 0, AF_INET }, 234 { "-arp", IFF_NOARP, setifflags, 0, AF_INET }, 235 { "router", IFF_ROUTER, setifflags, 0, AF_ANY }, 236 { "-router", -IFF_ROUTER, setifflags, 0, AF_ANY }, 237 { "private", IFF_PRIVATE, setifflags, 0, AF_ANY }, 238 { "-private", -IFF_PRIVATE, setifflags, 0, AF_ANY }, 239 { "xmit", -IFF_NOXMIT, setifflags, 0, AF_ANY }, 240 { "-xmit", IFF_NOXMIT, setifflags, 0, AF_ANY }, 241 { "-nud", IFF_NONUD, setifflags, 0, AF_INET6 }, 242 { "nud", -IFF_NONUD, setifflags, 0, AF_INET6 }, 243 { "anycast", IFF_ANYCAST, setifflags, 0, AF_ANY }, 244 { "-anycast", -IFF_ANYCAST, setifflags, 0, AF_ANY }, 245 { "local", -IFF_NOLOCAL, setifflags, 0, AF_ANY }, 246 { "-local", IFF_NOLOCAL, setifflags, 0, AF_ANY }, 247 { "deprecated", IFF_DEPRECATED, setifflags, 0, AF_ANY }, 248 { "-deprecated", -IFF_DEPRECATED, setifflags, 0, AF_ANY }, 249 { "preferred", IFF_PREFERRED, setifflags, 0, AF_INET6 }, 250 { "-preferred", -IFF_PREFERRED, setifflags, 0, AF_INET6 }, 251 { "debug", 0, setdebugflag, 0, AF_ANY }, 252 { "verbose", 0, setverboseflag, 0, AF_ANY }, 253 { NETMASK_CMD, NEXTARG, setifnetmask, 0, AF_INET }, 254 { "metric", NEXTARG, setifmetric, 0, AF_ANY }, 255 { "mtu", NEXTARG, setifmtu, 0, AF_ANY }, 256 { "index", NEXTARG, setifindex, 0, AF_ANY }, 257 { "broadcast", NEXTARG, setifbroadaddr, 0, AF_INET }, 258 { "auto-revarp", 0, setifrevarp, 1, AF_INET }, 259 { "ipmp", 0, inetipmp, 1, AF_ANY }, 260 { "plumb", 0, inetplumb, 1, AF_ANY }, 261 { "unplumb", 0, inetunplumb, 0, AF_ANY }, 262 { "subnet", NEXTARG, setifsubnet, 0, AF_ANY }, 263 { "token", NEXTARG, setiftoken, 0, AF_INET6 }, 264 { "tsrc", NEXTARG, setiftsrc, 0, AF_ANY }, 265 { "tdst", NEXTARG, setiftdst, 0, AF_ANY }, 266 { "encr_auth_algs", NEXTARG, set_tun_esp_auth_alg, 0, AF_ANY }, 267 { "encr_algs", NEXTARG, set_tun_esp_encr_alg, 0, AF_ANY }, 268 { "auth_algs", NEXTARG, set_tun_ah_alg, 0, AF_ANY }, 269 { "addif", NEXTARG, addif, 1, AF_ANY }, 270 { "removeif", NEXTARG, removeif, 1, AF_ANY }, 271 { "modlist", 0, modlist, 1, AF_ANY }, 272 { "modinsert", NEXTARG, modinsert, 1, AF_ANY }, 273 { "modremove", NEXTARG, modremove, 1, AF_ANY }, 274 { "failover", -IFF_NOFAILOVER, setifflags, 1, AF_ANY }, 275 { "-failover", IFF_NOFAILOVER, setifflags, 1, AF_ANY }, 276 { "standby", IFF_STANDBY, setifflags, 1, AF_ANY }, 277 { "-standby", -IFF_STANDBY, setifflags, 1, AF_ANY }, 278 { "failed", IFF_FAILED, setifflags, 1, AF_ANY }, 279 { "-failed", -IFF_FAILED, setifflags, 1, AF_ANY }, 280 { "group", NEXTARG, setifgroupname, 1, AF_ANY }, 281 { "configinfo", 0, configinfo, 1, AF_ANY }, 282 { "encaplimit", NEXTARG, set_tun_encap_limit, 0, AF_ANY }, 283 { "-encaplimit", 0, clr_tun_encap_limit, 0, AF_ANY }, 284 { "thoplimit", NEXTARG, set_tun_hop_limit, 0, AF_ANY }, 285 { "set", NEXTARG, setifaddr, 0, AF_ANY }, 286 { "destination", NEXTARG, setifdstaddr, 0, AF_ANY }, 287 { "zone", NEXTARG, setzone, 0, AF_ANY }, 288 { "-zone", 0, setzone, 0, AF_ANY }, 289 { "all-zones", 0, setallzones, 0, AF_ANY }, 290 { "ether", OPTARG, setifether, 0, AF_ANY }, 291 { "usesrc", NEXTARG, setifsrc, 0, AF_ANY }, 292 293 /* 294 * NOTE: any additions to this table must also be applied to ifparse 295 * (usr/src/cmd/cmd-inet/sbin/ifparse/ifparse.c) 296 */ 297 298 { 0, 0, setifaddr, 0, AF_ANY }, 299 { 0, 0, setifdstaddr, 0, AF_ANY }, 300 { 0, 0, 0, 0, 0 }, 301 }; 302 303 304 typedef struct if_config_cmd { 305 uint64_t iff_flag; 306 int iff_af; 307 char *iff_name; 308 } if_config_cmd_t; 309 310 /* 311 * NOTE: print_config_flags() processes this table in order, so we put "up" 312 * last so that we can be sure "-failover" will take effect first. Otherwise, 313 * IPMP test addresses will erroneously migrate to the IPMP interface. 314 */ 315 static if_config_cmd_t if_config_cmd_tbl[] = { 316 { IFF_NOTRAILERS, AF_UNSPEC, "-trailers" }, 317 { IFF_PRIVATE, AF_UNSPEC, "private" }, 318 { IFF_NOXMIT, AF_UNSPEC, "-xmit" }, 319 { IFF_ANYCAST, AF_INET6, "anycast" }, 320 { IFF_NOLOCAL, AF_UNSPEC, "-local" }, 321 { IFF_DEPRECATED, AF_UNSPEC, "deprecated" }, 322 { IFF_NOFAILOVER, AF_UNSPEC, "-failover" }, 323 { IFF_STANDBY, AF_UNSPEC, "standby" }, 324 { IFF_FAILED, AF_UNSPEC, "failed" }, 325 { IFF_PREFERRED, AF_UNSPEC, "preferred" }, 326 { IFF_NONUD, AF_INET6, "-nud" }, 327 { IFF_NOARP, AF_INET, "-arp" }, 328 { IFF_UP, AF_UNSPEC, "up" }, 329 { 0, 0, NULL }, 330 }; 331 332 typedef struct ni { 333 char ni_name[LIFNAMSIZ]; 334 struct ni *ni_next; 335 } ni_t; 336 337 static ni_t *ni_list = NULL; 338 static int num_ni = 0; 339 340 /* End defines and structure definitions for ifconfig -a plumb */ 341 342 /* Known address families */ 343 struct afswtch { 344 char *af_name; 345 short af_af; 346 void (*af_status)(); 347 void (*af_getaddr)(); 348 void (*af_configinfo)(); 349 } afs[] = { 350 { "inet", AF_INET, in_status, in_getaddr, in_configinfo }, 351 { "inet6", AF_INET6, in6_status, in6_getaddr, in6_configinfo }, 352 { 0, 0, 0, 0, 0 } 353 }; 354 355 #define SOCKET_AF(af) (((af) == AF_UNSPEC) ? AF_INET : (af)) 356 357 struct afswtch *afp; /* the address family being set or asked about */ 358 359 int 360 main(int argc, char *argv[]) 361 { 362 int64_t lifc_flags; 363 char *default_ip_str; 364 365 lifc_flags = LIFC_NOXMIT|LIFC_TEMPORARY|LIFC_ALLZONES|LIFC_UNDER_IPMP; 366 367 if (argc < 2) { 368 usage(); 369 exit(1); 370 } 371 argc--, argv++; 372 if (strlen(*argv) > sizeof (name) - 1) { 373 (void) fprintf(stderr, "%s: interface name too long\n", *argv); 374 exit(1); 375 } 376 (void) strncpy(name, *argv, sizeof (name)); 377 name[sizeof (name) - 1] = '\0'; 378 (void) strncpy(origname, name, sizeof (origname)); /* For addif */ 379 default_ip_str = NULL; 380 v4compat = get_compat_flag(&default_ip_str); 381 if (v4compat == DEFAULT_PROT_BAD_VALUE) { 382 (void) fprintf(stderr, 383 "ifconfig: %s: Bad value for %s in %s\n", default_ip_str, 384 DEFAULT_IP, INET_DEFAULT_FILE); 385 free(default_ip_str); 386 exit(2); 387 } 388 free(default_ip_str); 389 argc--, argv++; 390 if (argc > 0) { 391 struct afswtch *myafp; 392 393 for (myafp = afp = afs; myafp->af_name; myafp++) { 394 if (strcmp(myafp->af_name, *argv) == 0) { 395 afp = myafp; argc--; argv++; 396 break; 397 } 398 } 399 af = lifr.lifr_addr.ss_family = afp->af_af; 400 if (af == AF_INET6) { 401 v4compat = 0; 402 } 403 } 404 405 s = socket(SOCKET_AF(af), SOCK_DGRAM, 0); 406 s4 = socket(AF_INET, SOCK_DGRAM, 0); 407 s6 = socket(AF_INET6, SOCK_DGRAM, 0); 408 if (s == -1 || s4 == -1 || s6 == -1) 409 Perror0_exit("socket"); 410 411 /* 412 * Special interface names is any combination of these flags. 413 * Note that due to the ifconfig syntax they have to be combined 414 * as a single '-' option. 415 * -a All interfaces 416 * -u "up" interfaces 417 * -d "down" interfaces 418 * -D Interfaces not controlled by DHCP 419 * -4 IPv4 interfaces 420 * -6 IPv6 interfaces 421 * -X Turn on debug (not documented) 422 * -v Turn on verbose 423 * -Z Only interfaces in caller's zone 424 */ 425 426 if (name[0] == '-') { 427 /* One or more options */ 428 int64_t onflags = 0; 429 int64_t offflags = 0; 430 int c; 431 char *av[2] = { "ifconfig", name }; 432 433 while ((c = getopt(2, av, "audDXZ46v")) != -1) { 434 switch ((char)c) { 435 case 'a': 436 all = 1; 437 break; 438 case 'u': 439 onflags |= IFF_UP; 440 break; 441 case 'd': 442 offflags |= IFF_UP; 443 break; 444 case 'D': 445 offflags |= IFF_DHCPRUNNING; 446 break; 447 case 'X': 448 debug += 3; 449 break; 450 case 'Z': 451 lifc_flags &= ~LIFC_ALLZONES; 452 break; 453 case '4': 454 /* 455 * -4 is not a compatable flag, therefore 456 * we assume they want v4compat turned off 457 */ 458 v4compat = 0; 459 onflags |= IFF_IPV4; 460 break; 461 case '6': 462 /* 463 * If they want IPv6, well then we'll assume 464 * they don't want IPv4 compat 465 */ 466 v4compat = 0; 467 onflags |= IFF_IPV6; 468 break; 469 case 'v': 470 verbose = 1; 471 break; 472 case '?': 473 usage(); 474 exit(1); 475 } 476 } 477 if (!all) { 478 (void) fprintf(stderr, 479 "ifconfig: %s: no such interface\n", name); 480 exit(1); 481 } 482 foreachinterface(ifconfig, argc, argv, af, onflags, offflags, 483 lifc_flags); 484 } else { 485 ifconfig(argc, argv, af, (struct lifreq *)NULL); 486 } 487 return (0); 488 } 489 490 /* 491 * For each interface, call (*func)(argc, argv, af, lifrp). 492 * Only call function if onflags and offflags are set or clear, respectively, 493 * in the interfaces flags field. 494 */ 495 static void 496 foreachinterface(void (*func)(), int argc, char *argv[], int af, 497 int64_t onflags, int64_t offflags, int64_t lifc_flags) 498 { 499 int n; 500 char *buf; 501 struct lifnum lifn; 502 struct lifconf lifc; 503 struct lifreq *lifrp; 504 struct lifreq lifrl; /* Local lifreq struct */ 505 int numifs; 506 unsigned bufsize; 507 int plumball = 0; 508 int save_af = af; 509 510 buf = NULL; 511 /* 512 * Special case: 513 * ifconfig -a plumb should find all network interfaces 514 * in the machine for the global zone. 515 * For non-global zones, only find the assigned interfaces. 516 * Also, there is no need to SIOCGLIF* ioctls, since 517 * those interfaces have already been plumbed 518 */ 519 if (argc > 0 && (strcmp(*argv, "plumb") == 0)) { 520 if (getzoneid() == GLOBAL_ZONEID) { 521 if (find_all_global_interfaces(&lifc, &buf, 522 lifc_flags) != 0) 523 return; 524 } else { 525 if (find_all_zone_interfaces(&lifc, &buf, 526 lifc_flags) != 0) 527 return; 528 } 529 if (lifc.lifc_len == 0) 530 return; 531 plumball = 1; 532 } else { 533 lifn.lifn_family = AF_UNSPEC; 534 lifn.lifn_flags = lifc_flags; 535 if (ioctl(s, SIOCGLIFNUM, (char *)&lifn) < 0) { 536 Perror0_exit("Could not determine number" 537 " of interfaces"); 538 } 539 numifs = lifn.lifn_count; 540 if (debug) 541 (void) printf("ifconfig: %d interfaces\n", numifs); 542 543 bufsize = numifs * sizeof (struct lifreq); 544 if ((buf = malloc(bufsize)) == NULL) { 545 Perror0("out of memory\n"); 546 (void) close(s); 547 return; 548 } 549 550 lifc.lifc_family = AF_UNSPEC; 551 lifc.lifc_flags = lifc_flags; 552 lifc.lifc_len = bufsize; 553 lifc.lifc_buf = buf; 554 555 if (ioctl(s, SIOCGLIFCONF, (char *)&lifc) < 0) { 556 Perror0("SIOCGLIFCONF"); 557 (void) close(s); 558 free(buf); 559 return; 560 } 561 } 562 563 lifrp = lifc.lifc_req; 564 for (n = lifc.lifc_len / sizeof (struct lifreq); n > 0; n--, lifrp++) { 565 566 if (!plumball) { 567 /* 568 * We must close and recreate the socket each time 569 * since we don't know what type of socket it is now 570 * (each status function may change it). 571 */ 572 573 (void) close(s); 574 575 af = lifrp->lifr_addr.ss_family; 576 s = socket(SOCKET_AF(af), SOCK_DGRAM, 0); 577 if (s == -1) { 578 /* 579 * Perror0() assumes the name to be in the 580 * globally defined lifreq structure. 581 */ 582 (void) strncpy(lifr.lifr_name, 583 lifrp->lifr_name, sizeof (lifr.lifr_name)); 584 Perror0_exit("socket"); 585 } 586 } 587 588 /* 589 * Only service interfaces that match the on and off 590 * flags masks. 591 */ 592 if (onflags || offflags) { 593 (void) memset(&lifrl, 0, sizeof (lifrl)); 594 (void) strncpy(lifrl.lifr_name, lifrp->lifr_name, 595 sizeof (lifrl.lifr_name)); 596 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifrl) < 0) { 597 /* 598 * Perror0() assumes the name to be in the 599 * globally defined lifreq structure. 600 */ 601 (void) strncpy(lifr.lifr_name, 602 lifrp->lifr_name, sizeof (lifr.lifr_name)); 603 Perror0_exit("foreachinterface: SIOCGLIFFLAGS"); 604 } 605 if ((lifrl.lifr_flags & onflags) != onflags) 606 continue; 607 if ((~lifrl.lifr_flags & offflags) != offflags) 608 continue; 609 } 610 611 if (!plumball) { 612 (void) strncpy(lifrl.lifr_name, lifrp->lifr_name, 613 sizeof (lifrl.lifr_name)); 614 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifrl) < 0) { 615 /* 616 * Perror0() assumes the name to be in the 617 * globally defined lifreq structure. 618 */ 619 (void) strncpy(lifr.lifr_name, 620 lifrp->lifr_name, sizeof (lifr.lifr_name)); 621 Perror0("foreachinterface: SIOCGLIFADDR"); 622 continue; 623 } 624 if (lifrl.lifr_addr.ss_family != af) { 625 /* Switch address family */ 626 af = lifrl.lifr_addr.ss_family; 627 (void) close(s); 628 629 s = socket(SOCKET_AF(af), SOCK_DGRAM, 0); 630 if (s == -1) { 631 /* 632 * Perror0() assumes the name to be in 633 * the globally defined lifreq 634 * structure. 635 */ 636 (void) strncpy(lifr.lifr_name, 637 lifrp->lifr_name, 638 sizeof (lifr.lifr_name)); 639 Perror0_exit("socket"); 640 } 641 } 642 } 643 644 /* 645 * Reset global state 646 * setaddr: Used by parser to tear apart source and dest 647 * name and origname contain the name of the 'current' 648 * interface. 649 */ 650 setaddr = 0; 651 (void) strncpy(name, lifrp->lifr_name, sizeof (name)); 652 (void) strncpy(origname, name, sizeof (origname)); 653 654 (*func)(argc, argv, save_af, lifrp); 655 /* the func could have overwritten origname, so restore */ 656 (void) strncpy(name, origname, sizeof (name)); 657 } 658 if (buf != NULL) 659 free(buf); 660 } 661 662 static void 663 tun_reality_check(void) 664 { 665 struct iftun_req treq; 666 ipsec_req_t *ipsr; 667 668 (void) strncpy(treq.ifta_lifr_name, name, sizeof (treq.ifta_lifr_name)); 669 if (strchr(name, ':') != NULL) { 670 /* Return, we don't need to check. */ 671 return; 672 } 673 if (ioctl(s, SIOCGTUNPARAM, (caddr_t)&treq) < 0 || 674 !(treq.ifta_flags & IFTUN_SECURITY) || 675 (treq.ifta_flags & IFTUN_COMPLEX_SECURITY)) { 676 /* 677 * Either not a tunnel (the SIOCGTUNPARAM fails on 678 * non-tunnels), the security flag is not set, or 679 * this is a tunnel with ipsecconf(1M)-set policy. 680 * Regardless, return. 681 */ 682 return; 683 } 684 685 ipsr = (ipsec_req_t *)&treq.ifta_secinfo; 686 687 if (ipsr->ipsr_esp_req != 0 && 688 ipsr->ipsr_esp_auth_alg == SADB_AALG_NONE && 689 ipsr->ipsr_ah_req == 0) 690 (void) fprintf(stderr, "ifconfig: WARNING - tunnel with " 691 "only ESP and no authentication.\n"); 692 } 693 694 /* 695 * for the specified interface call (*func)(argc, argv, af, lifrp). 696 */ 697 698 static void 699 ifconfig(int argc, char *argv[], int af, struct lifreq *lifrp) 700 { 701 static boolean_t scan_netmask = _B_FALSE; 702 int ret; 703 704 if (argc == 0) { 705 status(); 706 return; 707 } 708 709 if (strcmp(*argv, "auto-dhcp") == 0 || strcmp(*argv, "dhcp") == 0) { 710 /* 711 * Some errors are ignored in the case where more than one 712 * interface is being operated on. 713 */ 714 ret = setifdhcp("ifconfig", name, argc, argv); 715 if (ret == DHCP_EXIT_IF_FAILURE) { 716 if (!all) 717 exit(DHCP_EXIT_FAILURE); 718 } else if (ret != DHCP_EXIT_SUCCESS) { 719 exit(ret); 720 } 721 return; 722 } 723 724 /* 725 * The following is a "hack" to get around the existing interface 726 * setting mechanism. Currently, each interface attribute, 727 * such as address, netmask, broadcast, ... is set separately. But 728 * sometimes two or more attributes must be set together. For 729 * example, setting an address without a netmask does not make sense. 730 * Yet they can be set separately for IPv4 address using the current 731 * ifconfig(1M) syntax. The kernel then "infers" the correct netmask 732 * using the deprecated "IP address classes." This is simply not 733 * correct. 734 * 735 * The "hack" below is to go thru the whole command list looking for 736 * the netmask command first. Then use this netmask to set the 737 * address. This does not provide an extensible way to accommodate 738 * future need for setting more than one attributes together. 739 * 740 * Note that if the "netmask" command argument is a "+", we need 741 * to save this info and do the query after we know the address to 742 * be set. The reason is that if "addif" is used, the working 743 * interface name will be changed later when the logical interface 744 * is created. In in_getmask(), if an address is not provided, 745 * it will use the working interface's address to do the query. 746 * It will be wrong now as we don't know the logical interface's name. 747 * 748 * ifconfig(1M) is too overloaded and the code is so convoluted 749 * that it is "safer" not to re-architect the code to fix the above 750 * issue, hence this "hack." We may be better off to have a new 751 * command with better syntax for configuring network interface 752 * parameters... 753 */ 754 if (!scan_netmask && afp->af_af == AF_INET) { 755 int largc; 756 char **largv; 757 758 /* Only go thru the command list once to find the netmask. */ 759 scan_netmask = _B_TRUE; 760 761 /* 762 * Currently, if multiple netmask commands are specified, the 763 * last one will be used as the final netmask. So we need 764 * to scan the whole list to preserve this behavior. 765 */ 766 for (largc = argc, largv = argv; largc > 0; largc--, largv++) { 767 if (strcmp(*largv, NETMASK_CMD) == 0) { 768 if (--largc == 0) 769 break; 770 largv++; 771 if (strcmp(*largv, "+") == 0) { 772 g_netmask_set = G_NETMASK_PENDING; 773 } else { 774 in_getaddr(*largv, (struct sockaddr *) 775 &g_netmask, NULL); 776 g_netmask_set = G_NETMASK_SET; 777 } 778 /* Continue the scan. */ 779 } 780 } 781 } 782 783 while (argc > 0) { 784 struct cmd *p; 785 boolean_t found_cmd; 786 787 if (debug) 788 (void) printf("ifconfig: argv %s\n", *argv); 789 790 found_cmd = _B_FALSE; 791 for (p = cmds; p->c_func; p++) { 792 if (p->c_name) { 793 if (strcmp(*argv, p->c_name) == 0) { 794 /* 795 * indicate that the command was 796 * found and check to see if 797 * the address family is valid 798 */ 799 found_cmd = _B_TRUE; 800 if (p->c_af == AF_ANY || 801 af == p->c_af) 802 break; 803 } 804 } else { 805 if (p->c_af == AF_ANY || 806 af == p->c_af) 807 break; 808 } 809 } 810 /* 811 * If we found the keyword, but the address family 812 * did not match spit out an error 813 */ 814 if (found_cmd && p->c_name == 0) { 815 (void) fprintf(stderr, "ifconfig: Operation %s not" 816 " supported for %s\n", *argv, afp->af_name); 817 exit(1); 818 } 819 /* 820 * else (no keyword found), we assume it's an address 821 * of some sort 822 */ 823 if (p->c_name == 0 && setaddr) 824 p++; /* got src, do dst */ 825 if (p->c_func) { 826 if (p->c_af == AF_INET6) { 827 v4compat = 0; 828 } 829 if (p->c_parameter == NEXTARG || 830 p->c_parameter == OPTARG) { 831 argc--, argv++; 832 if (argc == 0 && p->c_parameter == NEXTARG) { 833 (void) fprintf(stderr, 834 "ifconfig: no argument for %s\n", 835 p->c_name); 836 exit(1); 837 } 838 } 839 /* 840 * Call the function if: 841 * 842 * there's no address family 843 * restriction 844 * OR 845 * we don't know the address yet 846 * (because we were called from 847 * main) 848 * OR 849 * there is a restriction AND 850 * the address families match 851 */ 852 if ((p->c_af == AF_ANY) || 853 (lifrp == (struct lifreq *)NULL) || 854 (lifrp->lifr_addr.ss_family == p->c_af)) { 855 ret = (*p->c_func)(*argv, p->c_parameter); 856 /* 857 * If c_func failed and we should 858 * abort processing for this 859 * interface on failure, return 860 * now rather than going on to 861 * process other commands for 862 * the same interface. 863 */ 864 if (ret != 0 && p->c_abortonfail) 865 return; 866 } 867 } 868 argc--, argv++; 869 } 870 871 /* Check to see if there's a security hole in the tunnel setup. */ 872 tun_reality_check(); 873 } 874 875 /* ARGSUSED */ 876 static int 877 setdebugflag(char *val, int64_t arg) 878 { 879 debug++; 880 return (0); 881 } 882 883 /* ARGSUSED */ 884 static int 885 setverboseflag(char *val, int64_t arg) 886 { 887 verbose++; 888 return (0); 889 } 890 891 /* 892 * This function fills in the given lifreq's lifr_addr field based on 893 * g_netmask_set. 894 */ 895 static void 896 set_mask_lifreq(struct lifreq *lifr, struct sockaddr_storage *addr, 897 struct sockaddr_storage *mask) 898 { 899 assert(addr != NULL); 900 assert(mask != NULL); 901 902 switch (g_netmask_set) { 903 case G_NETMASK_SET: 904 lifr->lifr_addr = g_netmask; 905 break; 906 907 case G_NETMASK_PENDING: 908 /* 909 * "+" is used as the argument to "netmask" command. Query 910 * the database on the correct netmask based on the address to 911 * be set. 912 */ 913 assert(afp->af_af == AF_INET); 914 g_netmask = *addr; 915 if (!in_getmask((struct sockaddr_in *)&g_netmask, _B_TRUE)) { 916 lifr->lifr_addr = *mask; 917 g_netmask_set = G_NETMASK_NIL; 918 } else { 919 lifr->lifr_addr = g_netmask; 920 g_netmask_set = G_NETMASK_SET; 921 } 922 break; 923 924 case G_NETMASK_NIL: 925 default: 926 lifr->lifr_addr = *mask; 927 break; 928 } 929 } 930 931 /* 932 * Set the interface address. Handles <addr>, <addr>/<n> as well as /<n> 933 * syntax for setting the address, the address plus netmask, and just 934 * the netmask respectively. 935 */ 936 /* ARGSUSED */ 937 static int 938 setifaddr(char *addr, int64_t param) 939 { 940 int prefixlen = 0; 941 struct sockaddr_storage laddr; 942 struct sockaddr_storage netmask; 943 struct sockaddr_in6 *sin6; 944 struct sockaddr_in *sin; 945 struct sockaddr_storage sav_netmask; 946 947 if (addr[0] == '/') 948 return (setifprefixlen(addr, 0)); 949 950 (*afp->af_getaddr)(addr, (struct sockaddr *)&laddr, &prefixlen); 951 952 (void) memset(&netmask, 0, sizeof (netmask)); 953 netmask.ss_family = afp->af_af; 954 switch (prefixlen) { 955 case NO_PREFIX: 956 /* Nothing there - ok */ 957 break; 958 case BAD_ADDR: 959 (void) fprintf(stderr, "ifconfig: Bad prefix length in %s\n", 960 addr); 961 exit(1); 962 default: 963 if (afp->af_af == AF_INET6) { 964 sin6 = (struct sockaddr_in6 *)&netmask; 965 if (!in_prefixlentomask(prefixlen, IPV6_ABITS, 966 (uchar_t *)&sin6->sin6_addr)) { 967 (void) fprintf(stderr, "ifconfig: " 968 "Bad prefix length: %d\n", 969 prefixlen); 970 exit(1); 971 } 972 } else { 973 sin = (struct sockaddr_in *)&netmask; 974 if (!in_prefixlentomask(prefixlen, IP_ABITS, 975 (uchar_t *)&sin->sin_addr)) { 976 (void) fprintf(stderr, "ifconfig: " 977 "Bad prefix length: %d\n", 978 prefixlen); 979 exit(1); 980 } 981 } 982 /* 983 * Just in case of funny setting of both prefix and netmask, 984 * prefix should override the netmask command. 985 */ 986 g_netmask_set = G_NETMASK_NIL; 987 break; 988 } 989 /* Tell parser that an address was set */ 990 setaddr++; 991 /* save copy of netmask to restore in case of error */ 992 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 993 if (ioctl(s, SIOCGLIFNETMASK, (caddr_t)&lifr) < 0) 994 Perror0_exit("SIOCGLIFNETMASK"); 995 sav_netmask = lifr.lifr_addr; 996 997 /* 998 * If setting the address and not the mask, clear any existing mask 999 * and the kernel will then assign the default (netmask has been set 1000 * to 0 in this case). If setting both (either by using a prefix or 1001 * using the netmask command), set the mask first, so the address will 1002 * be interpreted correctly. 1003 */ 1004 set_mask_lifreq(&lifr, &laddr, &netmask); 1005 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1006 Perror0_exit("SIOCSLIFNETMASK"); 1007 1008 if (debug) { 1009 char abuf[INET6_ADDRSTRLEN]; 1010 void *addr = (afp->af_af == AF_INET) ? 1011 (void *)&((struct sockaddr_in *)&laddr)->sin_addr : 1012 (void *)&((struct sockaddr_in6 *)&laddr)->sin6_addr; 1013 1014 (void) printf("Setting %s af %d addr %s\n", 1015 lifr.lifr_name, afp->af_af, 1016 inet_ntop(afp->af_af, addr, abuf, sizeof (abuf))); 1017 } 1018 lifr.lifr_addr = laddr; 1019 lifr.lifr_addr.ss_family = afp->af_af; 1020 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) { 1021 /* 1022 * Restore the netmask 1023 */ 1024 int saverr = errno; 1025 1026 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1027 lifr.lifr_addr = sav_netmask; 1028 (void) ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr); 1029 errno = saverr; 1030 Perror0_exit("SIOCSLIFADDR"); 1031 } 1032 1033 return (0); 1034 } 1035 1036 /* 1037 * The following functions are stolen from the ipseckey(1m) program. 1038 * Perhaps they should be somewhere common, but for now, we just maintain 1039 * two versions. We do this because of the different semantics for which 1040 * algorithms we select ("requested" for ifconfig vs. "actual" for key). 1041 */ 1042 1043 static ulong_t 1044 parsenum(char *num) 1045 { 1046 ulong_t rc; 1047 char *end = NULL; 1048 1049 errno = 0; 1050 rc = strtoul(num, &end, 0); 1051 if (errno != 0 || end == num || *end != '\0') { 1052 rc = (ulong_t)-1; 1053 } 1054 1055 return (rc); 1056 } 1057 1058 /* 1059 * Parse and reverse parse possible algorithm values, include numbers. 1060 * Mostly stolen from ipseckey.c. See the comments above parsenum() for why 1061 * this isn't common to ipseckey.c. 1062 * 1063 * NOTE: Static buffer in this function for the return value. Since ifconfig 1064 * isn't multithreaded, this isn't a huge problem. 1065 */ 1066 1067 #define NBUF_SIZE 20 /* Enough to print a large integer. */ 1068 1069 static char * 1070 rparsealg(uint8_t alg_value, int proto_num) 1071 { 1072 struct ipsecalgent *alg; 1073 static char numprint[128]; /* Enough to hold an algorithm name. */ 1074 1075 /* 1076 * Special cases for "any" and "none" 1077 * The kernel needs to be able to distinguish between "any" 1078 * and "none" and the APIs are underdefined in this area for auth. 1079 */ 1080 if (proto_num == IPSEC_PROTO_AH) { 1081 if (alg_value == SADB_AALG_NONE) 1082 return ("none"); 1083 if (alg_value == SADB_AALG_ANY) 1084 return ("any"); 1085 } 1086 1087 alg = getipsecalgbynum(alg_value, proto_num, NULL); 1088 if (alg != NULL) { 1089 (void) strlcpy(numprint, alg->a_names[0], sizeof (numprint)); 1090 freeipsecalgent(alg); 1091 } else { 1092 (void) snprintf(numprint, sizeof (numprint), "%d", alg_value); 1093 } 1094 1095 return (numprint); 1096 } 1097 1098 static uint_t 1099 parsealg(char *algname, int proto_num) 1100 { 1101 struct ipsecalgent *alg; 1102 ulong_t invalue; 1103 1104 if (algname == NULL) { 1105 (void) fprintf(stderr, "ifconfig: Unexpected end of command " 1106 "line.\n"); 1107 exit(1); 1108 } 1109 1110 /* 1111 * Special-case "none" and "any". 1112 * Use strcasecmp because its length is bounded. 1113 */ 1114 if (strcasecmp("none", algname) == 0) { 1115 return ((proto_num == IPSEC_PROTO_ESP) ? 1116 NO_ESP_EALG : NO_ESP_AALG); 1117 } 1118 if ((strcasecmp("any", algname) == 0) && (proto_num == IPSEC_PROTO_AH)) 1119 return (SADB_AALG_ANY); 1120 1121 alg = getipsecalgbyname(algname, proto_num, NULL); 1122 if (alg != NULL) { 1123 invalue = alg->a_alg_num; 1124 freeipsecalgent(alg); 1125 return ((uint_t)invalue); 1126 } 1127 1128 /* 1129 * Since algorithms can be loaded during kernel run-time, check for 1130 * numeric algorithm values too. 1131 */ 1132 invalue = parsenum(algname); 1133 if ((invalue & (ulong_t)0xff) == invalue) 1134 return ((uint_t)invalue); 1135 1136 (void) fprintf(stderr, "ifconfig: %s algorithm type %s unknown.\n", 1137 (proto_num == IPSEC_PROTO_ESP) ? 1138 "Encryption" : "Authentication", algname); 1139 exit(1); 1140 /* NOTREACHED */ 1141 } 1142 1143 /* 1144 * Actual ifconfig functions to set tunnel security properties. 1145 */ 1146 1147 enum ipsec_alg_type { ESP_ENCR_ALG = 1, ESP_AUTH_ALG, AH_AUTH_ALG }; 1148 1149 boolean_t first_set_tun = _B_TRUE; 1150 boolean_t encr_alg_set = _B_FALSE; 1151 1152 /* 1153 * Need global for multiple calls to set_tun_algs 1154 * because we accumulate algorithm selections over 1155 * the lifetime of this ifconfig(1M) invocation. 1156 */ 1157 static struct iftun_req treq_tun; 1158 1159 static int 1160 set_tun_algs(int which_alg, int alg) 1161 { 1162 ipsec_req_t *ipsr; 1163 1164 (void) strncpy(treq_tun.ifta_lifr_name, name, 1165 sizeof (treq_tun.ifta_lifr_name)); 1166 if (strchr(name, ':') != NULL) { 1167 errno = EPERM; 1168 Perror0_exit("Tunnel params on logical interfaces"); 1169 } 1170 if (ioctl(s, SIOCGTUNPARAM, (caddr_t)&treq_tun) < 0) { 1171 if (errno == EOPNOTSUPP || errno == EINVAL) 1172 Perror0_exit("Not a tunnel"); 1173 else Perror0_exit("SIOCGTUNPARAM"); 1174 } 1175 1176 ipsr = (ipsec_req_t *)&treq_tun.ifta_secinfo; 1177 1178 if (treq_tun.ifta_vers != IFTUN_VERSION) { 1179 (void) fprintf(stderr, 1180 "Kernel tunnel secinfo version mismatch.\n"); 1181 exit(1); 1182 } 1183 1184 /* 1185 * If I'm just starting off this ifconfig, I want a clean slate, 1186 * otherwise, I've captured the current tunnel security settings. 1187 * In the case of continuation, I merely add to the settings. 1188 */ 1189 if (first_set_tun) { 1190 first_set_tun = _B_FALSE; 1191 (void) memset(ipsr, 0, sizeof (*ipsr)); 1192 } 1193 1194 treq_tun.ifta_flags = IFTUN_SECURITY; 1195 1196 switch (which_alg) { 1197 case ESP_ENCR_ALG: 1198 if (alg == NO_ESP_EALG) { 1199 if (ipsr->ipsr_esp_auth_alg == SADB_AALG_NONE) 1200 ipsr->ipsr_esp_req = 0; 1201 ipsr->ipsr_esp_alg = SADB_EALG_NONE; 1202 1203 /* Let the user specify NULL encryption implicitly. */ 1204 if (ipsr->ipsr_esp_auth_alg != SADB_AALG_NONE) { 1205 encr_alg_set = _B_TRUE; 1206 ipsr->ipsr_esp_alg = SADB_EALG_NULL; 1207 } 1208 } else { 1209 encr_alg_set = _B_TRUE; 1210 ipsr->ipsr_esp_req = 1211 IPSEC_PREF_REQUIRED | IPSEC_PREF_UNIQUE; 1212 ipsr->ipsr_esp_alg = alg; 1213 } 1214 break; 1215 case ESP_AUTH_ALG: 1216 if (alg == NO_ESP_AALG) { 1217 if ((ipsr->ipsr_esp_alg == SADB_EALG_NONE || 1218 ipsr->ipsr_esp_alg == SADB_EALG_NULL) && 1219 !encr_alg_set) 1220 ipsr->ipsr_esp_req = 0; 1221 ipsr->ipsr_esp_auth_alg = SADB_AALG_NONE; 1222 } else { 1223 ipsr->ipsr_esp_req = 1224 IPSEC_PREF_REQUIRED | IPSEC_PREF_UNIQUE; 1225 ipsr->ipsr_esp_auth_alg = alg; 1226 1227 /* Let the user specify NULL encryption implicitly. */ 1228 if (ipsr->ipsr_esp_alg == SADB_EALG_NONE && 1229 !encr_alg_set) 1230 ipsr->ipsr_esp_alg = SADB_EALG_NULL; 1231 } 1232 break; 1233 case AH_AUTH_ALG: 1234 if (alg == NO_AH_AALG) { 1235 ipsr->ipsr_ah_req = 0; 1236 ipsr->ipsr_auth_alg = SADB_AALG_NONE; 1237 } else { 1238 ipsr->ipsr_ah_req = 1239 IPSEC_PREF_REQUIRED | IPSEC_PREF_UNIQUE; 1240 ipsr->ipsr_auth_alg = alg; 1241 } 1242 break; 1243 /* Will never hit DEFAULT */ 1244 } 1245 1246 if (ioctl(s, SIOCSTUNPARAM, (caddr_t)&treq_tun) < 0) { 1247 Perror2_exit("set tunnel security properties", 1248 treq_tun.ifta_lifr_name); 1249 } 1250 1251 return (0); 1252 } 1253 1254 /* ARGSUSED */ 1255 static int 1256 set_tun_esp_encr_alg(char *addr, int64_t param) 1257 { 1258 return (set_tun_algs(ESP_ENCR_ALG, 1259 parsealg(addr, IPSEC_PROTO_ESP))); 1260 } 1261 1262 /* ARGSUSED */ 1263 static int 1264 set_tun_esp_auth_alg(char *addr, int64_t param) 1265 { 1266 return (set_tun_algs(ESP_AUTH_ALG, 1267 parsealg(addr, IPSEC_PROTO_AH))); 1268 } 1269 1270 /* ARGSUSED */ 1271 static int 1272 set_tun_ah_alg(char *addr, int64_t param) 1273 { 1274 return (set_tun_algs(AH_AUTH_ALG, 1275 parsealg(addr, IPSEC_PROTO_AH))); 1276 } 1277 1278 /* ARGSUSED */ 1279 static int 1280 setifrevarp(char *arg, int64_t param) 1281 { 1282 struct sockaddr_in laddr; 1283 1284 if (afp->af_af == AF_INET6) { 1285 (void) fprintf(stderr, 1286 "ifconfig: revarp not possible on IPv6 interface %s\n", 1287 name); 1288 exit(1); 1289 } 1290 if (doifrevarp(name, &laddr)) { 1291 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1292 laddr.sin_family = AF_INET; 1293 (void) memcpy(&lifr.lifr_addr, &laddr, sizeof (laddr)); 1294 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) 1295 Perror0_exit("SIOCSLIFADDR"); 1296 } 1297 return (0); 1298 } 1299 1300 /* ARGSUSED */ 1301 static int 1302 setifsubnet(char *addr, int64_t param) 1303 { 1304 int prefixlen = 0; 1305 struct sockaddr_storage subnet; 1306 1307 (*afp->af_getaddr)(addr, &subnet, &prefixlen); 1308 1309 switch (prefixlen) { 1310 case NO_PREFIX: 1311 (void) fprintf(stderr, 1312 "ifconfig: Missing prefix length in subnet %s\n", addr); 1313 exit(1); 1314 /* NOTREACHED */ 1315 case BAD_ADDR: 1316 (void) fprintf(stderr, 1317 "ifconfig: Bad prefix length in %s\n", addr); 1318 exit(1); 1319 default: 1320 break; 1321 } 1322 1323 lifr.lifr_addr = subnet; 1324 lifr.lifr_addrlen = prefixlen; 1325 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1326 if (ioctl(s, SIOCSLIFSUBNET, (caddr_t)&lifr) < 0) 1327 Perror0_exit("SIOCSLIFSUBNET"); 1328 1329 return (0); 1330 } 1331 1332 /* ARGSUSED */ 1333 static int 1334 setifnetmask(char *addr, int64_t param) 1335 { 1336 struct sockaddr_in netmask; 1337 1338 assert(afp->af_af != AF_INET6); 1339 1340 if (strcmp(addr, "+") == 0) { 1341 if (!in_getmask(&netmask, _B_FALSE)) 1342 return (0); 1343 (void) printf("Setting netmask of %s to %s\n", name, 1344 inet_ntoa(netmask.sin_addr)); 1345 } else { 1346 in_getaddr(addr, (struct sockaddr *)&netmask, NULL); 1347 } 1348 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1349 (void) memcpy(&lifr.lifr_addr, &netmask, sizeof (netmask)); 1350 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1351 Perror0_exit("SIOCSLIFNETMASK"); 1352 return (0); 1353 } 1354 1355 /* 1356 * Parse '/<n>' as a netmask. 1357 */ 1358 /* ARGSUSED */ 1359 static int 1360 setifprefixlen(char *addr, int64_t param) 1361 { 1362 int prefixlen; 1363 int af = afp->af_af; 1364 1365 prefixlen = in_getprefixlen(addr, _B_TRUE, 1366 (af == AF_INET) ? IP_ABITS : IPV6_ABITS); 1367 if (prefixlen < 0) { 1368 (void) fprintf(stderr, 1369 "ifconfig: Bad prefix length in %s\n", addr); 1370 exit(1); 1371 } 1372 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 1373 lifr.lifr_addr.ss_family = af; 1374 if (af == AF_INET6) { 1375 struct sockaddr_in6 *sin6; 1376 1377 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 1378 if (!in_prefixlentomask(prefixlen, IPV6_ABITS, 1379 (uchar_t *)&sin6->sin6_addr)) { 1380 (void) fprintf(stderr, "ifconfig: " 1381 "Bad prefix length: %d\n", 1382 prefixlen); 1383 exit(1); 1384 } 1385 } else if (af == AF_INET) { 1386 struct sockaddr_in *sin; 1387 1388 sin = (struct sockaddr_in *)&lifr.lifr_addr; 1389 if (!in_prefixlentomask(prefixlen, IP_ABITS, 1390 (uchar_t *)&sin->sin_addr)) { 1391 (void) fprintf(stderr, "ifconfig: " 1392 "Bad prefix length: %d\n", 1393 prefixlen); 1394 exit(1); 1395 } 1396 } else { 1397 (void) fprintf(stderr, "ifconfig: setting prefix only supported" 1398 " for address family inet or inet6\n"); 1399 exit(1); 1400 } 1401 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1402 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1403 Perror0_exit("SIOCSLIFNETMASK"); 1404 return (0); 1405 } 1406 1407 /* ARGSUSED */ 1408 static int 1409 setifbroadaddr(char *addr, int64_t param) 1410 { 1411 struct sockaddr_in broadaddr; 1412 1413 assert(afp->af_af != AF_INET6); 1414 1415 if (strcmp(addr, "+") == 0) { 1416 /* 1417 * This doesn't set the broadcast address at all. Rather, it 1418 * gets, then sets the interface's address, relying on the fact 1419 * that resetting the address will reset the broadcast address. 1420 */ 1421 (void) strncpy(lifr.lifr_name, name, 1422 sizeof (lifr.lifr_name)); 1423 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 1424 if (errno != EADDRNOTAVAIL) 1425 Perror0_exit("SIOCGLIFADDR"); 1426 return (0); 1427 } 1428 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) 1429 Perror0_exit("SIOCGLIFADDR"); 1430 1431 return (0); 1432 } 1433 in_getaddr(addr, (struct sockaddr *)&broadaddr, NULL); 1434 1435 (void) memcpy(&lifr.lifr_addr, &broadaddr, sizeof (broadaddr)); 1436 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1437 if (ioctl(s, SIOCSLIFBRDADDR, (caddr_t)&lifr) < 0) 1438 Perror0_exit("SIOCSLIFBRDADDR"); 1439 return (0); 1440 } 1441 1442 /* 1443 * set interface destination address 1444 */ 1445 /* ARGSUSED */ 1446 static int 1447 setifdstaddr(char *addr, int64_t param) 1448 { 1449 (*afp->af_getaddr)(addr, (struct sockaddr *)&lifr.lifr_addr, NULL); 1450 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1451 if (ioctl(s, SIOCSLIFDSTADDR, (caddr_t)&lifr) < 0) 1452 Perror0_exit("setifdstaddr: SIOCSLIFDSTADDR"); 1453 return (0); 1454 } 1455 1456 /* ARGSUSED */ 1457 static int 1458 setifflags(char *val, int64_t value) 1459 { 1460 struct lifreq lifrl; /* local lifreq struct */ 1461 boolean_t bringup = _B_FALSE; 1462 1463 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1464 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) 1465 Perror0_exit("setifflags: SIOCGLIFFLAGS"); 1466 1467 if (value < 0) { 1468 value = -value; 1469 1470 if ((value & IFF_NOFAILOVER) && (lifr.lifr_flags & IFF_UP)) { 1471 /* 1472 * The kernel does not allow administratively up test 1473 * addresses to be converted to data addresses. Bring 1474 * the address down first, then bring it up after it's 1475 * been converted to a data address. 1476 */ 1477 lifr.lifr_flags &= ~IFF_UP; 1478 (void) ioctl(s, SIOCSLIFFLAGS, (caddr_t)&lifr); 1479 bringup = _B_TRUE; 1480 } 1481 1482 lifr.lifr_flags &= ~value; 1483 if ((value & (IFF_UP | IFF_NOFAILOVER)) && 1484 (lifr.lifr_flags & IFF_DUPLICATE)) { 1485 /* 1486 * If the user is trying to mark an interface with a 1487 * duplicate address as "down," or convert a duplicate 1488 * test address to a data address, then fetch the 1489 * address and set it. This will cause IP to clear 1490 * the IFF_DUPLICATE flag and stop the automatic 1491 * recovery timer. 1492 */ 1493 value = lifr.lifr_flags; 1494 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) >= 0) 1495 (void) ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr); 1496 lifr.lifr_flags = value; 1497 } 1498 } else { 1499 lifr.lifr_flags |= value; 1500 } 1501 1502 /* 1503 * If we're about to bring up an underlying physical IPv6 interface in 1504 * an IPMP group, ensure the IPv6 IPMP interface is also up. This is 1505 * for backward compatibility with legacy configurations in which 1506 * there are no explicit hostname files for IPMP interfaces. (For 1507 * IPv4, this is automatically handled by the kernel when migrating 1508 * the underlying interface's data address to the IPMP interface.) 1509 */ 1510 (void) strlcpy(lifrl.lifr_name, name, LIFNAMSIZ); 1511 1512 if (lifnum(lifr.lifr_name) == 0 && 1513 (lifr.lifr_flags & (IFF_UP|IFF_IPV6)) == (IFF_UP|IFF_IPV6) && 1514 ioctl(s, SIOCGLIFGROUPNAME, &lifrl) == 0 && 1515 lifrl.lifr_groupname[0] != '\0') { 1516 lifgroupinfo_t lifgr; 1517 1518 (void) strlcpy(lifgr.gi_grname, lifrl.lifr_groupname, 1519 LIFGRNAMSIZ); 1520 if (ioctl(s, SIOCGLIFGROUPINFO, &lifgr) == -1) 1521 Perror0_exit("setifflags: SIOCGLIFGROUPINFO"); 1522 1523 (void) strlcpy(lifrl.lifr_name, lifgr.gi_grifname, LIFNAMSIZ); 1524 if (ioctl(s, SIOCGLIFFLAGS, &lifrl) == -1) 1525 Perror0_exit("setifflags: SIOCGLIFFLAGS"); 1526 if (!(lifrl.lifr_flags & IFF_UP)) { 1527 lifrl.lifr_flags |= IFF_UP; 1528 if (ioctl(s, SIOCSLIFFLAGS, &lifrl) == -1) 1529 Perror0_exit("setifflags: SIOCSLIFFLAGS"); 1530 } 1531 } 1532 1533 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1534 if (ioctl(s, SIOCSLIFFLAGS, (caddr_t)&lifr) < 0) 1535 Perror0_exit("setifflags: SIOCSLIFFLAGS"); 1536 1537 if (bringup) { 1538 lifr.lifr_flags |= IFF_UP; 1539 if (ioctl(s, SIOCSLIFFLAGS, (caddr_t)&lifr) < 0) 1540 Perror0_exit("setifflags: SIOCSLIFFLAGS IFF_UP"); 1541 } 1542 1543 return (0); 1544 } 1545 1546 /* ARGSUSED */ 1547 static int 1548 setifmetric(char *val, int64_t param) 1549 { 1550 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1551 lifr.lifr_metric = atoi(val); 1552 if (ioctl(s, SIOCSLIFMETRIC, (caddr_t)&lifr) < 0) 1553 Perror0_exit("setifmetric: SIOCSLIFMETRIC"); 1554 return (0); 1555 } 1556 1557 /* ARGSUSED */ 1558 static int 1559 setifmtu(char *val, int64_t param) 1560 { 1561 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1562 lifr.lifr_mtu = atoi(val); 1563 if (ioctl(s, SIOCSLIFMTU, (caddr_t)&lifr) < 0) 1564 Perror0_exit("setifmtu: SIOCSLIFMTU"); 1565 return (0); 1566 } 1567 1568 /* ARGSUSED */ 1569 static int 1570 setifindex(char *val, int64_t param) 1571 { 1572 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1573 lifr.lifr_index = atoi(val); 1574 if (ioctl(s, SIOCSLIFINDEX, (caddr_t)&lifr) < 0) 1575 Perror0_exit("setifindex: SIOCSLIFINDEX"); 1576 return (0); 1577 } 1578 1579 /* ARGSUSED */ 1580 static void 1581 notifycb(dlpi_handle_t dh, dlpi_notifyinfo_t *dnip, void *arg) 1582 { 1583 } 1584 1585 /* ARGSUSED */ 1586 static int 1587 setifether(char *addr, int64_t param) 1588 { 1589 uchar_t *hwaddr; 1590 int hwaddrlen; 1591 int retval; 1592 ifaddrlistx_t *ifaddrp, *ifaddrs = NULL; 1593 dlpi_handle_t dh; 1594 dlpi_notifyid_t id; 1595 1596 if (addr == NULL) { 1597 ifstatus(name); 1598 print_ifether(name); 1599 return (0); 1600 } 1601 1602 /* 1603 * if the IP interface in the arguments is a logical 1604 * interface, exit with an error now. 1605 */ 1606 if (strchr(name, ':') != NULL) { 1607 (void) fprintf(stderr, "ifconfig: cannot change" 1608 " ethernet address of a logical interface\n"); 1609 exit(1); 1610 } 1611 1612 if ((hwaddr = _link_aton(addr, &hwaddrlen)) == NULL) { 1613 if (hwaddrlen == -1) 1614 (void) fprintf(stderr, 1615 "ifconfig: %s: bad address\n", hwaddr); 1616 else 1617 (void) fprintf(stderr, "ifconfig: malloc() failed\n"); 1618 exit(1); 1619 } 1620 1621 if ((retval = dlpi_open(name, &dh, 0)) != DLPI_SUCCESS) 1622 Perrdlpi_exit("cannot dlpi_open() link", name, retval); 1623 1624 if ((retval = dlpi_bind(dh, DLPI_ANY_SAP, NULL)) != DLPI_SUCCESS) 1625 Perrdlpi_exit("cannot dlpi_bind() link", name, retval); 1626 1627 retval = dlpi_enabnotify(dh, DL_NOTE_PHYS_ADDR, notifycb, NULL, &id); 1628 if (retval == DLPI_SUCCESS) { 1629 (void) dlpi_disabnotify(dh, id, NULL); 1630 } else { 1631 /* 1632 * This link does not support DL_NOTE_PHYS_ADDR: bring down 1633 * all of the addresses to flush the old hardware address 1634 * information out of IP. 1635 * 1636 * NOTE: Skipping this when DL_NOTE_PHYS_ADDR is supported is 1637 * more than an optimization: in.mpathd will set IFF_OFFLINE 1638 * if it's notified and the new address is a duplicate of 1639 * another in the group -- but the flags manipulation in 1640 * ifaddr_{down,up}() cannot be atomic and thus might clobber 1641 * IFF_OFFLINE, confusing in.mpathd. 1642 */ 1643 if (ifaddrlistx(name, IFF_UP, 0, &ifaddrs) == -1) 1644 Perror2_exit(name, "cannot get address list"); 1645 1646 ifaddrp = ifaddrs; 1647 for (; ifaddrp != NULL; ifaddrp = ifaddrp->ia_next) { 1648 if (!ifaddr_down(ifaddrp)) { 1649 Perror2_exit(ifaddrp->ia_name, 1650 "cannot bring down"); 1651 } 1652 } 1653 } 1654 1655 /* 1656 * Change the hardware address. 1657 */ 1658 retval = dlpi_set_physaddr(dh, DL_CURR_PHYS_ADDR, hwaddr, hwaddrlen); 1659 if (retval != DLPI_SUCCESS) { 1660 (void) fprintf(stderr, 1661 "ifconfig: failed setting mac address on %s\n", name); 1662 } 1663 dlpi_close(dh); 1664 1665 /* 1666 * If any addresses were brought down before changing the hardware 1667 * address, bring them up again. 1668 */ 1669 for (ifaddrp = ifaddrs; ifaddrp != NULL; ifaddrp = ifaddrp->ia_next) { 1670 if (!ifaddr_up(ifaddrp)) 1671 Perror2_exit(ifaddrp->ia_name, "cannot bring up"); 1672 } 1673 ifaddrlistx_free(ifaddrs); 1674 1675 return (0); 1676 } 1677 1678 /* 1679 * Print an interface's Ethernet address, if it has one. 1680 */ 1681 static void 1682 print_ifether(char *ifname) 1683 { 1684 int protocol; 1685 icfg_if_t interface; 1686 icfg_handle_t handle; 1687 int fd; 1688 1689 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1690 1691 fd = socket(AF_INET, SOCK_DGRAM, 0); 1692 if (fd == -1 || ioctl(fd, SIOCGLIFFLAGS, &lifr) == -1) { 1693 /* 1694 * It's possible the interface is only configured for 1695 * IPv6; check again with AF_INET6. 1696 */ 1697 (void) close(fd); 1698 fd = socket(AF_INET6, SOCK_DGRAM, 0); 1699 if (fd == -1 || ioctl(fd, SIOCGLIFFLAGS, &lifr) == -1) { 1700 (void) close(fd); 1701 return; 1702 } 1703 } 1704 (void) close(fd); 1705 1706 /* VNI and IPMP interfaces don't have MAC addresses */ 1707 if (lifr.lifr_flags & (IFF_VIRTUAL|IFF_IPMP)) 1708 return; 1709 1710 /* 1711 * We must be careful to set if_protocol based on the current 1712 * properties of the interface. For instance, if "ip.tun0" is 1713 * configured only as an IPv6 tunnel, then if_protocol must be 1714 * set to AF_INET6 or icfg_get_tunnel_lower() will fail and 1715 * we will falsely conclude that it's not a tunnel. 1716 */ 1717 interface.if_protocol = AF_INET; 1718 if (lifr.lifr_flags & IFF_IPV6) 1719 interface.if_protocol = AF_INET6; 1720 1721 (void) strncpy(interface.if_name, ifname, sizeof (interface.if_name)); 1722 1723 if (icfg_open(&handle, &interface) == ICFG_SUCCESS) { 1724 if (icfg_get_tunnel_lower(handle, &protocol) == ICFG_SUCCESS) { 1725 /* Tunnel op succeeded -- it's a tunnel so skip */ 1726 icfg_close(handle); 1727 return; 1728 } 1729 icfg_close(handle); 1730 } 1731 1732 dlpi_print_address(ifname); 1733 } 1734 1735 /* 1736 * static int find_all_global_interfaces(struct lifconf *lifcp, char **buf, 1737 * int64_t lifc_flags) 1738 * 1739 * It finds all data links for the global zone. 1740 * 1741 * It takes in input a pointer to struct lifconf to receive interfaces 1742 * informations, a **char to hold allocated buffer, and a lifc_flags. 1743 * 1744 * Return values: 1745 * 0 = everything OK 1746 * -1 = problem 1747 */ 1748 static int 1749 find_all_global_interfaces(struct lifconf *lifcp, char **buf, 1750 int64_t lifc_flags) 1751 { 1752 unsigned bufsize; 1753 int n; 1754 ni_t *nip; 1755 struct lifreq *lifrp; 1756 dladm_handle_t dld_handle; 1757 dladm_status_t status; 1758 char errmsg[DLADM_STRSIZE]; 1759 1760 if ((status = dladm_open(&dld_handle)) != DLADM_STATUS_OK) { 1761 (void) fprintf(stderr, 1762 "ifconfig: find_all_global_interfaces failed: %s\n", 1763 dladm_status2str(status, errmsg)); 1764 return (-1); 1765 } 1766 1767 (void) dlpi_walk(ni_entry, dld_handle, 0); 1768 1769 dladm_close(dld_handle); 1770 1771 /* 1772 * Now, translate the linked list into 1773 * a struct lifreq buffer 1774 */ 1775 if (num_ni == 0) { 1776 lifcp->lifc_family = AF_UNSPEC; 1777 lifcp->lifc_flags = lifc_flags; 1778 lifcp->lifc_len = 0; 1779 lifcp->lifc_buf = NULL; 1780 return (0); 1781 } 1782 1783 bufsize = num_ni * sizeof (struct lifreq); 1784 if ((*buf = malloc(bufsize)) == NULL) 1785 Perror0_exit("find_all_interfaces: malloc failed"); 1786 1787 lifcp->lifc_family = AF_UNSPEC; 1788 lifcp->lifc_flags = lifc_flags; 1789 lifcp->lifc_len = bufsize; 1790 lifcp->lifc_buf = *buf; 1791 1792 for (n = 0, lifrp = lifcp->lifc_req; n < num_ni; n++, lifrp++) { 1793 nip = ni_list; 1794 (void) strncpy(lifrp->lifr_name, nip->ni_name, 1795 sizeof (lifr.lifr_name)); 1796 ni_list = nip->ni_next; 1797 free(nip); 1798 } 1799 return (0); 1800 } 1801 1802 /* 1803 * static int find_all_zone_interfaces(struct lifconf *lifcp, char **buf, 1804 * int64_t lifc_flags) 1805 * 1806 * It finds all interfaces for an exclusive-IP zone, that is all the interfaces 1807 * assigned to it. 1808 * 1809 * It takes in input a pointer to struct lifconf to receive interfaces 1810 * informations, a **char to hold allocated buffer, and a lifc_flags. 1811 * 1812 * Return values: 1813 * 0 = everything OK 1814 * -1 = problem 1815 */ 1816 static int 1817 find_all_zone_interfaces(struct lifconf *lifcp, char **buf, int64_t lifc_flags) 1818 { 1819 zoneid_t zoneid; 1820 unsigned bufsize; 1821 char *dlnames, *ptr; 1822 struct lifreq *lifrp; 1823 int num_ni_saved, i; 1824 1825 zoneid = getzoneid(); 1826 1827 num_ni = 0; 1828 if (zone_list_datalink(zoneid, &num_ni, NULL) != 0) 1829 Perror0_exit("find_all_interfaces: list interfaces failed"); 1830 again: 1831 /* this zone doesn't have any data-links */ 1832 if (num_ni == 0) { 1833 lifcp->lifc_family = AF_UNSPEC; 1834 lifcp->lifc_flags = lifc_flags; 1835 lifcp->lifc_len = 0; 1836 lifcp->lifc_buf = NULL; 1837 return (0); 1838 } 1839 1840 dlnames = malloc(num_ni * LIFNAMSIZ); 1841 if (dlnames == NULL) 1842 Perror0_exit("find_all_interfaces: out of memory"); 1843 num_ni_saved = num_ni; 1844 1845 if (zone_list_datalink(zoneid, &num_ni, dlnames) != 0) 1846 Perror0_exit("find_all_interfaces: list interfaces failed"); 1847 1848 if (num_ni_saved < num_ni) { 1849 /* list increased, try again */ 1850 free(dlnames); 1851 goto again; 1852 } 1853 1854 /* this zone doesn't have any data-links now */ 1855 if (num_ni == 0) { 1856 free(dlnames); 1857 lifcp->lifc_family = AF_UNSPEC; 1858 lifcp->lifc_flags = lifc_flags; 1859 lifcp->lifc_len = 0; 1860 lifcp->lifc_buf = NULL; 1861 return (0); 1862 } 1863 1864 bufsize = num_ni * sizeof (struct lifreq); 1865 if ((*buf = malloc(bufsize)) == NULL) { 1866 free(dlnames); 1867 Perror0_exit("find_all_interfaces: malloc failed"); 1868 } 1869 1870 lifrp = (struct lifreq *)*buf; 1871 ptr = dlnames; 1872 for (i = 0; i < num_ni; i++) { 1873 if (strlcpy(lifrp->lifr_name, ptr, LIFNAMSIZ) >= 1874 LIFNAMSIZ) 1875 Perror0_exit("find_all_interfaces: overflow"); 1876 ptr += LIFNAMSIZ; 1877 lifrp++; 1878 } 1879 1880 free(dlnames); 1881 lifcp->lifc_family = AF_UNSPEC; 1882 lifcp->lifc_flags = lifc_flags; 1883 lifcp->lifc_len = bufsize; 1884 lifcp->lifc_buf = *buf; 1885 return (0); 1886 } 1887 1888 /* 1889 * Create the next unused logical interface using the original name 1890 * and assign the address (and mask if '/<n>' is part of the address). 1891 * Use the new logical interface for subsequent subcommands by updating 1892 * the name variable. 1893 * 1894 * This allows syntax like: 1895 * ifconfig le0 addif 109.106.86.130 netmask + up \ 1896 * addif 109.106.86.131 netmask + up 1897 */ 1898 /* ARGSUSED */ 1899 static int 1900 addif(char *str, int64_t param) 1901 { 1902 int prefixlen = 0; 1903 struct sockaddr_storage laddr; 1904 struct sockaddr_storage mask; 1905 1906 (void) strncpy(name, origname, sizeof (name)); 1907 1908 if (strchr(name, ':') != NULL) { 1909 (void) fprintf(stderr, 1910 "ifconfig: addif: bad physical interface name %s\n", 1911 name); 1912 exit(1); 1913 } 1914 1915 /* 1916 * clear so parser will interpret next address as source followed 1917 * by possible dest 1918 */ 1919 setaddr = 0; 1920 (*afp->af_getaddr)(str, (struct sockaddr *)&laddr, &prefixlen); 1921 1922 switch (prefixlen) { 1923 case NO_PREFIX: 1924 /* Nothing there - ok */ 1925 break; 1926 case BAD_ADDR: 1927 (void) fprintf(stderr, 1928 "ifconfig: Bad prefix length in %s\n", str); 1929 exit(1); 1930 default: 1931 (void) memset(&mask, 0, sizeof (mask)); 1932 mask.ss_family = afp->af_af; 1933 if (afp->af_af == AF_INET6) { 1934 struct sockaddr_in6 *sin6; 1935 sin6 = (struct sockaddr_in6 *)&mask; 1936 if (!in_prefixlentomask(prefixlen, IPV6_ABITS, 1937 (uchar_t *)&sin6->sin6_addr)) { 1938 (void) fprintf(stderr, "ifconfig: " 1939 "Bad prefix length: %d\n", 1940 prefixlen); 1941 exit(1); 1942 } 1943 } else { 1944 struct sockaddr_in *sin; 1945 1946 sin = (struct sockaddr_in *)&mask; 1947 if (!in_prefixlentomask(prefixlen, IP_ABITS, 1948 (uchar_t *)&sin->sin_addr)) { 1949 (void) fprintf(stderr, "ifconfig: " 1950 "Bad prefix length: %d\n", 1951 prefixlen); 1952 exit(1); 1953 } 1954 } 1955 g_netmask_set = G_NETMASK_NIL; 1956 break; 1957 } 1958 1959 /* 1960 * This is a "hack" to get around the problem of SIOCLIFADDIF. The 1961 * problem is that this ioctl does not include the netmask when 1962 * adding a logical interface. This is the same problem described 1963 * in the ifconfig() comments. To get around this problem, we first 1964 * add the logical interface with a 0 address. After that, we set 1965 * the netmask if provided. Finally we set the interface address. 1966 */ 1967 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1968 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 1969 1970 /* Note: no need to do DAD here since the interface isn't up yet. */ 1971 1972 if (ioctl(s, SIOCLIFADDIF, (caddr_t)&lifr) < 0) 1973 Perror0_exit("addif: SIOCLIFADDIF"); 1974 1975 (void) printf("Created new logical interface %s\n", 1976 lifr.lifr_name); 1977 (void) strncpy(name, lifr.lifr_name, sizeof (name)); 1978 1979 /* 1980 * Check and see if any "netmask" command is used and perform the 1981 * necessary operation. 1982 */ 1983 set_mask_lifreq(&lifr, &laddr, &mask); 1984 /* 1985 * Only set the netmask if "netmask" command is used or a prefix is 1986 * provided. 1987 */ 1988 if (g_netmask_set == G_NETMASK_SET || prefixlen >= 0) { 1989 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1990 Perror0_exit("addif: SIOCSLIFNETMASK"); 1991 } 1992 1993 /* Finally, we set the interface address. */ 1994 lifr.lifr_addr = laddr; 1995 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) 1996 Perror0_exit("SIOCSLIFADDR"); 1997 1998 /* 1999 * let parser know we got a source. 2000 * Next address, if given, should be dest 2001 */ 2002 setaddr++; 2003 return (0); 2004 } 2005 2006 /* 2007 * Remove a logical interface based on its IP address. Unlike addif 2008 * there is no '/<n>' here. 2009 * Verifies that the interface is down before it is removed. 2010 */ 2011 /* ARGSUSED */ 2012 static int 2013 removeif(char *str, int64_t param) 2014 { 2015 struct sockaddr_storage laddr; 2016 2017 if (strchr(name, ':') != NULL) { 2018 (void) fprintf(stderr, 2019 "ifconfig: removeif: bad physical interface name %s\n", 2020 name); 2021 exit(1); 2022 } 2023 2024 (*afp->af_getaddr)(str, &laddr, NULL); 2025 lifr.lifr_addr = laddr; 2026 2027 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2028 if (ioctl(s, SIOCLIFREMOVEIF, (caddr_t)&lifr) < 0) { 2029 if (errno == EBUSY) { 2030 /* This can only happen if ipif_id = 0 */ 2031 (void) fprintf(stderr, 2032 "ifconfig: removeif: can't remove interface: %s\n", 2033 name); 2034 exit(1); 2035 } 2036 Perror0_exit("removeif: SIOCLIFREMOVEIF"); 2037 } 2038 return (0); 2039 } 2040 2041 /* 2042 * Set the address token for IPv6. 2043 */ 2044 /* ARGSUSED */ 2045 static int 2046 setiftoken(char *addr, int64_t param) 2047 { 2048 int prefixlen = 0; 2049 struct sockaddr_in6 token; 2050 2051 in6_getaddr(addr, (struct sockaddr *)&token, &prefixlen); 2052 switch (prefixlen) { 2053 case NO_PREFIX: 2054 (void) fprintf(stderr, 2055 "ifconfig: Missing prefix length in subnet %s\n", addr); 2056 exit(1); 2057 /* NOTREACHED */ 2058 case BAD_ADDR: 2059 (void) fprintf(stderr, 2060 "ifconfig: Bad prefix length in %s\n", addr); 2061 exit(1); 2062 default: 2063 break; 2064 } 2065 (void) memcpy(&lifr.lifr_addr, &token, sizeof (token)); 2066 lifr.lifr_addrlen = prefixlen; 2067 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2068 if (ioctl(s, SIOCSLIFTOKEN, (caddr_t)&lifr) < 0) { 2069 Perror0_exit("setiftoken: SIOCSLIFTOKEN"); 2070 } 2071 return (0); 2072 } 2073 2074 /* ARGSUSED */ 2075 static int 2076 setifgroupname(char *grname, int64_t param) 2077 { 2078 lifgroupinfo_t lifgr; 2079 struct lifreq lifrl; 2080 ifaddrlistx_t *ifaddrp, *nextifaddrp; 2081 ifaddrlistx_t *ifaddrs = NULL, *downaddrs = NULL; 2082 int af; 2083 2084 if (debug) { 2085 (void) printf("Setting groupname %s on interface %s\n", 2086 grname, name); 2087 } 2088 2089 (void) strlcpy(lifrl.lifr_name, name, LIFNAMSIZ); 2090 (void) strlcpy(lifrl.lifr_groupname, grname, LIFGRNAMSIZ); 2091 2092 while (ioctl(s, SIOCSLIFGROUPNAME, &lifrl) == -1) { 2093 switch (errno) { 2094 case ENOENT: 2095 /* 2096 * The group doesn't yet exist; create it and repeat. 2097 */ 2098 af = afp->af_af; 2099 if (create_ipmp(grname, af, NULL, _B_TRUE) == -1) { 2100 if (errno == EEXIST) 2101 continue; 2102 2103 Perror2(grname, "cannot create IPMP group"); 2104 goto fail; 2105 } 2106 continue; 2107 2108 case EALREADY: 2109 /* 2110 * The interface is already in another group; must 2111 * remove existing membership first. 2112 */ 2113 lifrl.lifr_groupname[0] = '\0'; 2114 if (ioctl(s, SIOCSLIFGROUPNAME, &lifrl) == -1) { 2115 Perror2(name, "cannot remove existing " 2116 "IPMP group membership"); 2117 goto fail; 2118 } 2119 (void) strlcpy(lifrl.lifr_groupname, grname, 2120 LIFGRNAMSIZ); 2121 continue; 2122 2123 case EAFNOSUPPORT: 2124 /* 2125 * The group exists, but it's not configured with the 2126 * address families the interface needs. Since only 2127 * two address families are currently supported, just 2128 * configure the "other" address family. Note that we 2129 * may race with group deletion or creation by another 2130 * process (ENOENT or EEXIST); in such cases we repeat 2131 * our original SIOCSLIFGROUPNAME. 2132 */ 2133 (void) strlcpy(lifgr.gi_grname, grname, LIFGRNAMSIZ); 2134 if (ioctl(s, SIOCGLIFGROUPINFO, &lifgr) == -1) { 2135 if (errno == ENOENT) 2136 continue; 2137 2138 Perror2(grname, "SIOCGLIFGROUPINFO"); 2139 goto fail; 2140 } 2141 2142 af = lifgr.gi_v4 ? AF_INET6 : AF_INET; 2143 if (create_ipmp(grname, af, lifgr.gi_grifname, 2144 _B_TRUE) == -1) { 2145 if (errno == EEXIST) 2146 continue; 2147 2148 Perror2(grname, "cannot configure IPMP group"); 2149 goto fail; 2150 } 2151 continue; 2152 2153 case EADDRINUSE: 2154 /* 2155 * Some addresses are in-use (or under control of DAD). 2156 * Bring them down and retry the group join operation. 2157 * We will bring them back up after the interface has 2158 * been placed in the group. 2159 */ 2160 if (ifaddrlistx(lifrl.lifr_name, IFF_UP|IFF_DUPLICATE, 2161 0, &ifaddrs) == -1) { 2162 Perror2(grname, "cannot get address list"); 2163 goto fail; 2164 } 2165 2166 ifaddrp = ifaddrs; 2167 for (; ifaddrp != NULL; ifaddrp = nextifaddrp) { 2168 if (!ifaddr_down(ifaddrp)) { 2169 ifaddrs = ifaddrp; 2170 goto fail; 2171 } 2172 nextifaddrp = ifaddrp->ia_next; 2173 ifaddrp->ia_next = downaddrs; 2174 downaddrs = ifaddrp; 2175 } 2176 ifaddrs = NULL; 2177 continue; 2178 2179 case EADDRNOTAVAIL: { 2180 /* 2181 * Some data addresses are under application control. 2182 * For some of these (e.g., ADDRCONF), the application 2183 * should remove the address, in which case we retry a 2184 * few times (since the application's action is not 2185 * atomic with respect to us) before bailing out and 2186 * informing the user. 2187 */ 2188 int ntries, nappaddr = 0; 2189 const if_appflags_t *iap = if_appflags_tbl; 2190 2191 for (; iap->ia_app != NULL; iap++) { 2192 ntries = 0; 2193 again: 2194 if (ifaddrlistx(lifrl.lifr_name, iap->ia_flag, 2195 IFF_NOFAILOVER, &ifaddrs) == -1) { 2196 (void) fprintf(stderr, "ifconfig: %s: " 2197 "cannot get data addresses managed " 2198 "by %s\n", lifrl.lifr_name, 2199 iap->ia_app); 2200 goto fail; 2201 } 2202 2203 if (ifaddrs == NULL) 2204 continue; 2205 2206 ifaddrlistx_free(ifaddrs); 2207 ifaddrs = NULL; 2208 2209 if (++ntries < iap->ia_tries) { 2210 (void) poll(NULL, 0, 100); 2211 goto again; 2212 } 2213 2214 (void) fprintf(stderr, "ifconfig: cannot join " 2215 "IPMP group: %s has data addresses managed " 2216 "by %s\n", lifrl.lifr_name, iap->ia_app); 2217 nappaddr++; 2218 } 2219 if (nappaddr > 0) 2220 goto fail; 2221 continue; 2222 } 2223 default: 2224 Perror2(name, "SIOCSLIFGROUPNAME"); 2225 goto fail; 2226 } 2227 } 2228 2229 /* 2230 * If there were addresses that we had to bring down, it's time to 2231 * bring them up again. As part of bringing them up, the kernel will 2232 * automatically move them to the new IPMP interface. 2233 */ 2234 for (ifaddrp = downaddrs; ifaddrp != NULL; ifaddrp = ifaddrp->ia_next) { 2235 if (!ifaddr_up(ifaddrp) && errno != ENXIO) { 2236 (void) fprintf(stderr, "ifconfig: cannot bring back up " 2237 "%s: %s\n", ifaddrp->ia_name, strerror(errno)); 2238 } 2239 } 2240 ifaddrlistx_free(downaddrs); 2241 return (0); 2242 fail: 2243 /* 2244 * Attempt to bring back up any interfaces that we downed. 2245 */ 2246 for (ifaddrp = downaddrs; ifaddrp != NULL; ifaddrp = ifaddrp->ia_next) { 2247 if (!ifaddr_up(ifaddrp) && errno != ENXIO) { 2248 (void) fprintf(stderr, "ifconfig: cannot bring back up " 2249 "%s: %s\n", ifaddrp->ia_name, strerror(errno)); 2250 } 2251 } 2252 ifaddrlistx_free(downaddrs); 2253 ifaddrlistx_free(ifaddrs); 2254 2255 /* 2256 * We'd return -1, but foreachinterface() doesn't propagate the error 2257 * into the exit status, so we're forced to explicitly exit(). 2258 */ 2259 exit(1); 2260 /* NOTREACHED */ 2261 } 2262 2263 static boolean_t 2264 modcheck(const char *ifname) 2265 { 2266 (void) strlcpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); 2267 2268 if (ioctl(s, SIOCGLIFFLAGS, &lifr) < 0) { 2269 Perror0("SIOCGLIFFLAGS"); 2270 return (_B_FALSE); 2271 } 2272 2273 if (lifr.lifr_flags & IFF_IPMP) { 2274 (void) fprintf(stderr, "ifconfig: %s: module operations not" 2275 " supported on IPMP interfaces\n", ifname); 2276 return (_B_FALSE); 2277 } 2278 if (lifr.lifr_flags & IFF_VIRTUAL) { 2279 (void) fprintf(stderr, "ifconfig: %s: module operations not" 2280 " supported on virtual IP interfaces\n", ifname); 2281 return (_B_FALSE); 2282 } 2283 return (_B_TRUE); 2284 } 2285 2286 /* 2287 * To list all the modules above a given network interface. 2288 */ 2289 /* ARGSUSED */ 2290 static int 2291 modlist(char *null, int64_t param) 2292 { 2293 int muxid_fd; 2294 int muxfd; 2295 int ipfd_lowstr; 2296 int arpfd_lowstr; 2297 int num_mods; 2298 int i; 2299 struct str_list strlist; 2300 int orig_arpid; 2301 2302 /* 2303 * We'd return -1, but foreachinterface() doesn't propagate the error 2304 * into the exit status, so we're forced to explicitly exit(). 2305 */ 2306 if (!modcheck(name)) 2307 exit(1); 2308 2309 if (ip_domux2fd(&muxfd, &muxid_fd, &ipfd_lowstr, &arpfd_lowstr, 2310 &orig_arpid) < 0) { 2311 return (-1); 2312 } 2313 if ((num_mods = ioctl(ipfd_lowstr, I_LIST, NULL)) < 0) { 2314 Perror0("cannot I_LIST to get the number of modules"); 2315 } else { 2316 if (debug > 0) { 2317 (void) printf("Listing (%d) modules above %s\n", 2318 num_mods, name); 2319 } 2320 2321 strlist.sl_nmods = num_mods; 2322 strlist.sl_modlist = malloc(sizeof (struct str_mlist) * 2323 num_mods); 2324 if (strlist.sl_modlist == NULL) { 2325 Perror0("cannot malloc"); 2326 } else { 2327 if (ioctl(ipfd_lowstr, I_LIST, (caddr_t)&strlist) < 0) { 2328 Perror0("cannot I_LIST for module names"); 2329 } else { 2330 for (i = 0; i < strlist.sl_nmods; i++) { 2331 (void) printf("%d %s\n", i, 2332 strlist.sl_modlist[i].l_name); 2333 } 2334 } 2335 free(strlist.sl_modlist); 2336 } 2337 } 2338 return (ip_plink(muxfd, muxid_fd, ipfd_lowstr, arpfd_lowstr, 2339 orig_arpid)); 2340 } 2341 2342 #define MODINSERT_OP 'i' 2343 #define MODREMOVE_OP 'r' 2344 2345 /* 2346 * To insert a module to the stream of the interface. It is just a 2347 * wrapper. The real function is modop(). 2348 */ 2349 /* ARGSUSED */ 2350 static int 2351 modinsert(char *arg, int64_t param) 2352 { 2353 return (modop(arg, MODINSERT_OP)); 2354 } 2355 2356 /* 2357 * To remove a module from the stream of the interface. It is just a 2358 * wrapper. The real function is modop(). 2359 */ 2360 /* ARGSUSED */ 2361 static int 2362 modremove(char *arg, int64_t param) 2363 { 2364 return (modop(arg, MODREMOVE_OP)); 2365 } 2366 2367 /* 2368 * Open a stream on /dev/udp{,6}, pop off all undesired modules (note that 2369 * the user may have configured autopush to add modules above 2370 * udp), and push the arp module onto the resulting stream. 2371 * This is used to make IP+ARP be able to atomically track the muxid 2372 * for the I_PLINKed STREAMS, thus it isn't related to ARP running the ARP 2373 * protocol. 2374 */ 2375 static int 2376 open_arp_on_udp(char *udp_dev_name) 2377 { 2378 int fd; 2379 2380 if ((fd = open(udp_dev_name, O_RDWR)) == -1) { 2381 Perror2("open", udp_dev_name); 2382 return (-1); 2383 } 2384 errno = 0; 2385 while (ioctl(fd, I_POP, 0) != -1) 2386 ; 2387 if (errno != EINVAL) { 2388 Perror2("pop", udp_dev_name); 2389 } else if (ioctl(fd, I_PUSH, ARP_MOD_NAME) == -1) { 2390 Perror2("arp PUSH", udp_dev_name); 2391 } else { 2392 return (fd); 2393 } 2394 (void) close(fd); 2395 return (-1); 2396 } 2397 2398 /* 2399 * Helper function for mod*() functions. It gets a fd to the lower IP 2400 * stream and I_PUNLINK's the lower stream. It also initializes the 2401 * global variable lifr. 2402 * 2403 * Param: 2404 * int *muxfd: fd to /dev/udp{,6} for I_PLINK/I_PUNLINK 2405 * int *muxid_fd: fd to /dev/udp{,6} for LIFMUXID 2406 * int *ipfd_lowstr: fd to the lower IP stream. 2407 * int *arpfd_lowstr: fd to the lower ARP stream. 2408 * 2409 * Return: 2410 * -1 if operation fails, 0 otherwise. 2411 * 2412 * Please see the big block comment above ifplumb() for the logic of the 2413 * PLINK/PUNLINK 2414 */ 2415 static int 2416 ip_domux2fd(int *muxfd, int *muxid_fd, int *ipfd_lowstr, int *arpfd_lowstr, 2417 int *orig_arpid) 2418 { 2419 uint64_t flags; 2420 char *udp_dev_name; 2421 2422 *orig_arpid = 0; 2423 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2424 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 2425 Perror0_exit("status: SIOCGLIFFLAGS"); 2426 } 2427 flags = lifr.lifr_flags; 2428 if (flags & IFF_IPV4) { 2429 udp_dev_name = UDP_DEV_NAME; 2430 } else if (flags & IFF_IPV6) { 2431 udp_dev_name = UDP6_DEV_NAME; 2432 } else { 2433 return (-1); 2434 } 2435 2436 if ((*muxid_fd = open(udp_dev_name, O_RDWR)) < 0) { 2437 Perror2("open", udp_dev_name); 2438 return (-1); 2439 } 2440 if (ioctl(*muxid_fd, SIOCGLIFMUXID, (caddr_t)&lifr) < 0) { 2441 Perror2("SIOCGLIFMUXID", udp_dev_name); 2442 return (-1); 2443 } 2444 if (debug > 0) { 2445 (void) printf("ARP_muxid %d IP_muxid %d\n", 2446 lifr.lifr_arp_muxid, lifr.lifr_ip_muxid); 2447 } 2448 2449 /* 2450 * Use /dev/udp{,6} as the mux to avoid linkcycles. 2451 */ 2452 if ((*muxfd = open_arp_on_udp(udp_dev_name)) == -1) 2453 return (-1); 2454 2455 if (lifr.lifr_arp_muxid != 0) { 2456 if ((*arpfd_lowstr = ioctl(*muxfd, _I_MUXID2FD, 2457 lifr.lifr_arp_muxid)) < 0) { 2458 if ((errno == EINVAL) && 2459 (flags & (IFF_NOARP | IFF_IPV6))) { 2460 /* 2461 * Some plumbing utilities set the muxid to 2462 * -1 or some invalid value to signify that 2463 * there is no arp stream. Set the muxid to 0 2464 * before trying to unplumb the IP stream. 2465 * IP does not allow the IP stream to be 2466 * unplumbed if it sees a non-null arp muxid, 2467 * for consistency of IP-ARP streams. 2468 */ 2469 *orig_arpid = lifr.lifr_arp_muxid; 2470 lifr.lifr_arp_muxid = 0; 2471 (void) ioctl(*muxid_fd, SIOCSLIFMUXID, 2472 (caddr_t)&lifr); 2473 *arpfd_lowstr = -1; 2474 } else { 2475 Perror0("_I_MUXID2FD"); 2476 return (-1); 2477 } 2478 } else if (ioctl(*muxfd, I_PUNLINK, 2479 lifr.lifr_arp_muxid) < 0) { 2480 Perror2("I_PUNLINK", udp_dev_name); 2481 return (-1); 2482 } 2483 } else { 2484 *arpfd_lowstr = -1; 2485 } 2486 2487 if ((*ipfd_lowstr = ioctl(*muxfd, _I_MUXID2FD, 2488 lifr.lifr_ip_muxid)) < 0) { 2489 Perror0("_I_MUXID2FD"); 2490 /* Undo any changes we made */ 2491 if (*orig_arpid != 0) { 2492 lifr.lifr_arp_muxid = *orig_arpid; 2493 (void) ioctl(*muxid_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 2494 } 2495 return (-1); 2496 } 2497 if (ioctl(*muxfd, I_PUNLINK, lifr.lifr_ip_muxid) < 0) { 2498 Perror2("I_PUNLINK", udp_dev_name); 2499 /* Undo any changes we made */ 2500 if (*orig_arpid != 0) { 2501 lifr.lifr_arp_muxid = *orig_arpid; 2502 (void) ioctl(*muxid_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 2503 } 2504 return (-1); 2505 } 2506 return (0); 2507 } 2508 2509 /* 2510 * Helper function for mod*() functions. It I_PLINK's back the upper and 2511 * lower IP streams. Note that this function must be called after 2512 * ip_domux2fd(). In ip_domux2fd(), the global variable lifr is initialized 2513 * and ip_plink() needs information in lifr. So ip_domux2fd() and ip_plink() 2514 * must be called in pairs. 2515 * 2516 * Param: 2517 * int muxfd: fd to /dev/udp{,6} for I_PLINK/I_PUNLINK 2518 * int muxid_fd: fd to /dev/udp{,6} for LIFMUXID 2519 * int ipfd_lowstr: fd to the lower IP stream. 2520 * int arpfd_lowstr: fd to the lower ARP stream. 2521 * 2522 * Return: 2523 * -1 if operation fails, 0 otherwise. 2524 * 2525 * Please see the big block comment above ifplumb() for the logic of the 2526 * PLINK/PUNLINK 2527 */ 2528 static int 2529 ip_plink(int muxfd, int muxid_fd, int ipfd_lowstr, int arpfd_lowstr, 2530 int orig_arpid) 2531 { 2532 int ip_muxid; 2533 2534 ip_muxid = ioctl(muxfd, I_PLINK, ipfd_lowstr); 2535 if (ip_muxid < 0) { 2536 Perror2("I_PLINK", UDP_DEV_NAME); 2537 return (-1); 2538 } 2539 2540 /* 2541 * If there is an arp stream, plink it. If there is no 2542 * arp stream, then it is possible that the plumbing 2543 * utility could have stored any value in the arp_muxid. 2544 * If so, restore it from orig_arpid. 2545 */ 2546 if (arpfd_lowstr != -1) { 2547 if (ioctl(muxfd, I_PLINK, arpfd_lowstr) < 0) { 2548 Perror2("I_PLINK", UDP_DEV_NAME); 2549 return (-1); 2550 } 2551 } else if (orig_arpid != 0) { 2552 /* Undo the changes we did in ip_domux2fd */ 2553 lifr.lifr_arp_muxid = orig_arpid; 2554 lifr.lifr_ip_muxid = ip_muxid; 2555 (void) ioctl(muxid_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 2556 } 2557 2558 (void) close(muxfd); 2559 (void) close(muxid_fd); 2560 return (0); 2561 } 2562 2563 /* 2564 * The real function to perform module insertion/removal. 2565 * 2566 * Param: 2567 * char *arg: the argument string module_name@position 2568 * char op: operation, either MODINSERT_OP or MODREMOVE_OP. 2569 * 2570 * Return: 2571 * Before doing ip_domux2fd(), this function calls exit(1) in case of 2572 * error. After ip_domux2fd() is done, it returns -1 for error, 0 2573 * otherwise. 2574 */ 2575 static int 2576 modop(char *arg, char op) 2577 { 2578 char *pos_p; 2579 int muxfd; 2580 int muxid_fd; 2581 int ipfd_lowstr; /* IP stream (lower stream of mux) to be plinked */ 2582 int arpfd_lowstr; /* ARP stream (lower stream of mux) to be plinked */ 2583 struct strmodconf mod; 2584 char *at_char = "@"; 2585 char *arg_str; 2586 int orig_arpid; 2587 2588 /* 2589 * We'd return -1, but foreachinterface() doesn't propagate the error 2590 * into the exit status, so we're forced to explicitly exit(). 2591 */ 2592 if (!modcheck(name)) 2593 exit(1); 2594 2595 /* Need to save the original string for -a option. */ 2596 if ((arg_str = malloc(strlen(arg) + 1)) == NULL) { 2597 Perror0("cannot malloc"); 2598 return (-1); 2599 } 2600 (void) strcpy(arg_str, arg); 2601 2602 if (*arg_str == *at_char) { 2603 (void) fprintf(stderr, 2604 "ifconfig: must supply a module name\n"); 2605 exit(1); 2606 } 2607 mod.mod_name = strtok(arg_str, at_char); 2608 if (strlen(mod.mod_name) > FMNAMESZ) { 2609 (void) fprintf(stderr, "ifconfig: module name too long: %s\n", 2610 mod.mod_name); 2611 exit(1); 2612 } 2613 2614 /* 2615 * Need to make sure that the core TCP/IP stack modules are not 2616 * removed. Otherwise, "bad" things can happen. If a module 2617 * is removed and inserted back, it loses its old state. But 2618 * the modules above it still have the old state. E.g. IP assumes 2619 * fast data path while tunnel after re-inserted assumes that it can 2620 * receive M_DATA only in fast data path for which it does not have 2621 * any state. This is a general caveat of _I_REMOVE/_I_INSERT. 2622 */ 2623 if (op == MODREMOVE_OP && 2624 (strcmp(mod.mod_name, ARP_MOD_NAME) == 0 || 2625 strcmp(mod.mod_name, IP_MOD_NAME) == 0 || 2626 strcmp(mod.mod_name, TUN_NAME) == 0 || 2627 strcmp(mod.mod_name, ATUN_NAME) == 0 || 2628 strcmp(mod.mod_name, TUN6TO4_NAME) == 0)) { 2629 (void) fprintf(stderr, "ifconfig: cannot remove %s\n", 2630 mod.mod_name); 2631 exit(1); 2632 } 2633 2634 if ((pos_p = strtok(NULL, at_char)) == NULL) { 2635 (void) fprintf(stderr, "ifconfig: must supply a position\n"); 2636 exit(1); 2637 } 2638 mod.pos = atoi(pos_p); 2639 2640 if (ip_domux2fd(&muxfd, &muxid_fd, &ipfd_lowstr, &arpfd_lowstr, 2641 &orig_arpid) < 0) { 2642 free(arg_str); 2643 return (-1); 2644 } 2645 switch (op) { 2646 case MODINSERT_OP: 2647 if (debug > 0) { 2648 (void) printf("Inserting module %s at %d\n", 2649 mod.mod_name, mod.pos); 2650 } 2651 if (ioctl(ipfd_lowstr, _I_INSERT, (caddr_t)&mod) < 0) { 2652 Perror2("fail to insert module", mod.mod_name); 2653 } 2654 break; 2655 case MODREMOVE_OP: 2656 if (debug > 0) { 2657 (void) printf("Removing module %s at %d\n", 2658 mod.mod_name, mod.pos); 2659 } 2660 if (ioctl(ipfd_lowstr, _I_REMOVE, (caddr_t)&mod) < 0) { 2661 Perror2("fail to remove module", mod.mod_name); 2662 } 2663 break; 2664 default: 2665 /* Should never get to here. */ 2666 (void) fprintf(stderr, "Unknown operation\n"); 2667 break; 2668 } 2669 free(arg_str); 2670 return (ip_plink(muxfd, muxid_fd, ipfd_lowstr, arpfd_lowstr, 2671 orig_arpid)); 2672 } 2673 2674 /* 2675 * Set tunnel source address 2676 */ 2677 /* ARGSUSED */ 2678 static int 2679 setiftsrc(char *addr, int64_t param) 2680 { 2681 return (settaddr(addr, icfg_set_tunnel_src)); 2682 } 2683 2684 /* 2685 * Set tunnel destination address 2686 */ 2687 /* ARGSUSED */ 2688 static int 2689 setiftdst(char *addr, int64_t param) 2690 { 2691 return (settaddr(addr, icfg_set_tunnel_dest)); 2692 } 2693 2694 /* 2695 * sets tunnels src|dst address. settaddr() expects the following: 2696 * addr: Points to a printable string containing the address to be 2697 * set, e.g. 129.153.128.110. 2698 * fn: Pointer to a libinetcfg routine that will do the actual work. 2699 * The only valid functions are icfg_set_tunnel_src and 2700 * icfg_set_tunnel_dest. 2701 */ 2702 static int 2703 settaddr(char *addr, 2704 int (*fn)(icfg_handle_t, const struct sockaddr *, socklen_t)) 2705 { 2706 icfg_handle_t handle; 2707 icfg_if_t interface; 2708 struct sockaddr_storage laddr; 2709 int lower; 2710 int rc; 2711 2712 if (strchr(name, ':') != NULL) { 2713 errno = EPERM; 2714 Perror0_exit("Tunnel params on logical interfaces"); 2715 } 2716 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2717 interface.if_protocol = SOCKET_AF(af); 2718 2719 /* Open interface. */ 2720 if ((rc = icfg_open(&handle, &interface)) != ICFG_SUCCESS) 2721 Perror0_exit((char *)icfg_errmsg(rc)); 2722 2723 rc = icfg_get_tunnel_lower(handle, &lower); 2724 if (rc != ICFG_SUCCESS) 2725 Perror0_exit((char *)icfg_errmsg(rc)); 2726 2727 if (lower == AF_INET) { 2728 in_getaddr(addr, (struct sockaddr *)&laddr, NULL); 2729 } else { 2730 in6_getaddr(addr, (struct sockaddr *)&laddr, NULL); 2731 } 2732 2733 /* Call fn to do the real work, and close the interface. */ 2734 rc = (*fn)(handle, (struct sockaddr *)&laddr, 2735 sizeof (struct sockaddr_storage)); 2736 icfg_close(handle); 2737 2738 if (rc != ICFG_SUCCESS) 2739 Perror0_exit((char *)icfg_errmsg(rc)); 2740 2741 return (0); 2742 } 2743 2744 /* Set tunnel encapsulation limit. */ 2745 /* ARGSUSED */ 2746 static int 2747 set_tun_encap_limit(char *arg, int64_t param) 2748 { 2749 short limit; 2750 icfg_if_t interface; 2751 icfg_handle_t handle; 2752 int rc; 2753 2754 if (strchr(name, ':') != NULL) { 2755 errno = EPERM; 2756 Perror0_exit("Tunnel params on logical interfaces"); 2757 } 2758 2759 if ((sscanf(arg, "%hd", &limit) != 1) || (limit < 0) || 2760 (limit > 255)) { 2761 errno = EINVAL; 2762 Perror0_exit("Invalid encapsulation limit"); 2763 } 2764 2765 /* Open interface for configuration. */ 2766 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2767 interface.if_protocol = SOCKET_AF(af); 2768 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2769 Perror0_exit("couldn't open interface"); 2770 2771 rc = icfg_set_tunnel_encaplimit(handle, (int)limit); 2772 icfg_close(handle); 2773 2774 if (rc != ICFG_SUCCESS) 2775 Perror0_exit("Could not configure tunnel encapsulation limit"); 2776 2777 return (0); 2778 } 2779 2780 /* Disable encapsulation limit. */ 2781 /* ARGSUSED */ 2782 static int 2783 clr_tun_encap_limit(char *arg, int64_t param) 2784 { 2785 icfg_if_t interface; 2786 icfg_handle_t handle; 2787 int rc; 2788 2789 if (strchr(name, ':') != NULL) { 2790 errno = EPERM; 2791 Perror0_exit("Tunnel params on logical interfaces"); 2792 } 2793 2794 /* Open interface for configuration. */ 2795 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2796 interface.if_protocol = SOCKET_AF(af); 2797 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2798 Perror0_exit("couldn't open interface"); 2799 2800 rc = icfg_set_tunnel_encaplimit(handle, -1); 2801 icfg_close(handle); 2802 2803 if (rc != ICFG_SUCCESS) 2804 Perror0_exit((char *)icfg_errmsg(rc)); 2805 2806 return (0); 2807 } 2808 2809 /* Set tunnel hop limit. */ 2810 /* ARGSUSED */ 2811 static int 2812 set_tun_hop_limit(char *arg, int64_t param) 2813 { 2814 unsigned short limit; 2815 icfg_if_t interface; 2816 icfg_handle_t handle; 2817 int rc; 2818 2819 if (strchr(name, ':') != NULL) { 2820 errno = EPERM; 2821 Perror0_exit("Tunnel params on logical interfaces"); 2822 } 2823 2824 /* 2825 * Check limit here since it's really only an 8-bit unsigned quantity. 2826 */ 2827 if ((sscanf(arg, "%hu", &limit) != 1) || (limit > 255)) { 2828 errno = EINVAL; 2829 Perror0_exit("Invalid hop limit"); 2830 } 2831 2832 /* Open interface for configuration. */ 2833 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2834 interface.if_protocol = SOCKET_AF(af); 2835 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2836 Perror0_exit("couldn't open interface"); 2837 2838 rc = icfg_set_tunnel_hoplimit(handle, (uint8_t)limit); 2839 icfg_close(handle); 2840 2841 if (rc != ICFG_SUCCESS) 2842 Perror0_exit("Could not configure tunnel hop limit"); 2843 2844 return (0); 2845 } 2846 2847 /* Set zone ID */ 2848 static int 2849 setzone(char *arg, int64_t param) 2850 { 2851 zoneid_t zoneid = GLOBAL_ZONEID; 2852 2853 if (param == NEXTARG) { 2854 /* zone must be active */ 2855 if ((zoneid = getzoneidbyname(arg)) == -1) { 2856 (void) fprintf(stderr, 2857 "ifconfig: unknown zone '%s'\n", arg); 2858 exit(1); 2859 } 2860 } 2861 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2862 lifr.lifr_zoneid = zoneid; 2863 if (ioctl(s, SIOCSLIFZONE, (caddr_t)&lifr) == -1) 2864 Perror0_exit("SIOCSLIFZONE"); 2865 return (0); 2866 } 2867 2868 /* Put interface into all zones */ 2869 /* ARGSUSED */ 2870 static int 2871 setallzones(char *arg, int64_t param) 2872 { 2873 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2874 lifr.lifr_zoneid = ALL_ZONES; 2875 if (ioctl(s, SIOCSLIFZONE, (caddr_t)&lifr) == -1) 2876 Perror0_exit("SIOCSLIFZONE"); 2877 return (0); 2878 } 2879 2880 /* Set source address to use */ 2881 /* ARGSUSED */ 2882 static int 2883 setifsrc(char *arg, int64_t param) 2884 { 2885 uint_t ifindex = 0; 2886 int rval; 2887 2888 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2889 2890 /* 2891 * Argument can be either an interface name or "none". The latter means 2892 * that any previous selection is cleared. 2893 */ 2894 2895 rval = strcmp(arg, name); 2896 if (rval == 0) { 2897 (void) fprintf(stderr, 2898 "ifconfig: Cannot specify same interface for usesrc" 2899 " group\n"); 2900 exit(1); 2901 } 2902 2903 rval = strcmp(arg, NONE_STR); 2904 if (rval != 0) { 2905 if ((ifindex = if_nametoindex(arg)) == 0) { 2906 (void) strncpy(lifr.lifr_name, arg, LIFNAMSIZ); 2907 Perror0_exit("Could not get interface index"); 2908 } 2909 lifr.lifr_index = ifindex; 2910 } else { 2911 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) != 0) 2912 Perror0_exit("Not a valid usesrc consumer"); 2913 lifr.lifr_index = 0; 2914 } 2915 2916 if (debug) 2917 (void) printf("setifsrc: lifr_name %s, lifr_index %d\n", 2918 lifr.lifr_name, lifr.lifr_index); 2919 2920 if (ioctl(s, SIOCSLIFUSESRC, (caddr_t)&lifr) == -1) { 2921 if (rval == 0) 2922 Perror0_exit("Cannot reset usesrc group"); 2923 else 2924 Perror0_exit("Could not set source interface"); 2925 } 2926 2927 return (0); 2928 } 2929 2930 /* 2931 * Print the interface status line associated with `ifname' 2932 */ 2933 static void 2934 ifstatus(const char *ifname) 2935 { 2936 uint64_t flags; 2937 char if_usesrc_name[LIFNAMSIZ]; 2938 char *newbuf; 2939 int n, numifs, rval = 0; 2940 struct lifreq *lifrp; 2941 struct lifsrcof lifs; 2942 2943 (void) strncpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); 2944 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 2945 Perror0_exit("status: SIOCGLIFFLAGS"); 2946 } 2947 flags = lifr.lifr_flags; 2948 2949 /* 2950 * In V4 compatibility mode, we don't print the IFF_IPV4 flag or 2951 * interfaces with IFF_IPV6 set. 2952 */ 2953 if (v4compat) { 2954 flags &= ~IFF_IPV4; 2955 if (flags & IFF_IPV6) 2956 return; 2957 } 2958 2959 (void) printf("%s: ", ifname); 2960 print_flags(flags); 2961 2962 (void) strncpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); 2963 if (ioctl(s, SIOCGLIFMETRIC, (caddr_t)&lifr) < 0) { 2964 Perror0_exit("status: SIOCGLIFMETRIC"); 2965 } else { 2966 if (lifr.lifr_metric) 2967 (void) printf(" metric %d", lifr.lifr_metric); 2968 } 2969 if (ioctl(s, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) 2970 (void) printf(" mtu %u", lifr.lifr_mtu); 2971 2972 /* don't print index or zone when in compatibility mode */ 2973 if (!v4compat) { 2974 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) 2975 (void) printf(" index %d", lifr.lifr_index); 2976 /* 2977 * Stack instances use GLOBAL_ZONEID for IP data structures 2978 * even in the non-global zone. 2979 */ 2980 if (ioctl(s, SIOCGLIFZONE, (caddr_t)&lifr) >= 0 && 2981 lifr.lifr_zoneid != getzoneid() && 2982 lifr.lifr_zoneid != GLOBAL_ZONEID) { 2983 char zone_name[ZONENAME_MAX]; 2984 2985 if (lifr.lifr_zoneid == ALL_ZONES) { 2986 (void) printf("\n\tall-zones"); 2987 } else if (getzonenamebyid(lifr.lifr_zoneid, zone_name, 2988 sizeof (zone_name)) < 0) { 2989 (void) printf("\n\tzone %d", lifr.lifr_zoneid); 2990 } else { 2991 (void) printf("\n\tzone %s", zone_name); 2992 } 2993 } 2994 } 2995 2996 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) { 2997 lifs.lifs_ifindex = lifr.lifr_index; 2998 2999 /* 3000 * Find the number of interfaces that use this interfaces' 3001 * address as a source address 3002 */ 3003 lifs.lifs_buf = NULL; 3004 lifs.lifs_maxlen = 0; 3005 for (;;) { 3006 /* The first pass will give the bufsize we need */ 3007 rval = ioctl(s, SIOCGLIFSRCOF, (char *)&lifs); 3008 if (rval < 0) { 3009 if (lifs.lifs_buf != NULL) { 3010 free(lifs.lifs_buf); 3011 lifs.lifs_buf = NULL; 3012 } 3013 lifs.lifs_len = 0; 3014 break; 3015 } 3016 if (lifs.lifs_len <= lifs.lifs_maxlen) 3017 break; 3018 /* Use kernel's size + a small margin to avoid loops */ 3019 lifs.lifs_maxlen = lifs.lifs_len + 3020 5 * sizeof (struct lifreq); 3021 /* For the first pass, realloc acts like malloc */ 3022 newbuf = realloc(lifs.lifs_buf, lifs.lifs_maxlen); 3023 if (newbuf == NULL) { 3024 if (lifs.lifs_buf != NULL) { 3025 free(lifs.lifs_buf); 3026 lifs.lifs_buf = NULL; 3027 } 3028 lifs.lifs_len = 0; 3029 break; 3030 } 3031 lifs.lifs_buf = newbuf; 3032 } 3033 3034 3035 numifs = lifs.lifs_len / sizeof (struct lifreq); 3036 if (numifs > 0) { 3037 lifrp = lifs.lifs_req; 3038 (void) printf("\n\tsrcof"); 3039 for (n = numifs; n > 0; n--, lifrp++) { 3040 (void) printf(" %s", lifrp->lifr_name); 3041 } 3042 } 3043 3044 if (lifs.lifs_buf != NULL) 3045 free(lifs.lifs_buf); 3046 } 3047 3048 /* Find the interface whose source address this interface uses */ 3049 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) == 0) { 3050 if (lifr.lifr_index != 0) { 3051 if (if_indextoname(lifr.lifr_index, 3052 if_usesrc_name) == NULL) { 3053 (void) printf("\n\tusesrc ifIndex %d", 3054 lifr.lifr_index); 3055 } else { 3056 (void) printf("\n\tusesrc %s", if_usesrc_name); 3057 } 3058 } 3059 } 3060 3061 (void) putchar('\n'); 3062 } 3063 3064 3065 /* 3066 * Print the status of the interface. If an address family was 3067 * specified, show it and it only; otherwise, show them all. 3068 */ 3069 static void 3070 status(void) 3071 { 3072 struct afswtch *p = afp; 3073 uint64_t flags; 3074 3075 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3076 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 3077 Perror0_exit("status: SIOCGLIFFLAGS"); 3078 } 3079 3080 flags = lifr.lifr_flags; 3081 3082 /* 3083 * Only print the interface status if the address family matches 3084 * the interface family flag. 3085 */ 3086 if (p != NULL) { 3087 if (((p->af_af == AF_INET6) && (flags & IFF_IPV4)) || 3088 ((p->af_af == AF_INET) && (flags & IFF_IPV6))) 3089 return; 3090 } 3091 3092 /* 3093 * In V4 compatibility mode, don't print IFF_IPV6 interfaces. 3094 */ 3095 if (v4compat && (flags & IFF_IPV6)) 3096 return; 3097 3098 ifstatus(name); 3099 3100 if (p != NULL) { 3101 (*p->af_status)(1, flags); 3102 } else { 3103 for (p = afs; p->af_name; p++) { 3104 (void) close(s); 3105 s = socket(SOCKET_AF(p->af_af), SOCK_DGRAM, 0); 3106 /* set global af for use in p->af_status */ 3107 af = p->af_af; 3108 if (s == -1) { 3109 Perror0_exit("socket"); 3110 } 3111 (*p->af_status)(0, flags); 3112 } 3113 3114 /* 3115 * Historically, 'ether' has been an address family, 3116 * so print it here. 3117 */ 3118 print_ifether(name); 3119 } 3120 } 3121 3122 /* 3123 * Print the status of the interface in a format that can be used to 3124 * reconfigure the interface later. Code stolen from status() above. 3125 */ 3126 /* ARGSUSED */ 3127 static int 3128 configinfo(char *null, int64_t param) 3129 { 3130 char *cp; 3131 struct afswtch *p = afp; 3132 uint64_t flags; 3133 char lifname[LIFNAMSIZ]; 3134 char if_usesrc_name[LIFNAMSIZ]; 3135 3136 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3137 3138 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 3139 Perror0_exit("status: SIOCGLIFFLAGS"); 3140 } 3141 flags = lifr.lifr_flags; 3142 3143 if (debug) { 3144 (void) printf("configinfo: name %s flags 0x%llx af_af %d\n", 3145 name, flags, p != NULL ? p->af_af : -1); 3146 } 3147 3148 /* 3149 * Build the interface name to print (we can't directly use `name' 3150 * because one cannot "plumb" ":0" interfaces). 3151 */ 3152 (void) strlcpy(lifname, name, LIFNAMSIZ); 3153 if ((cp = strchr(lifname, ':')) != NULL && atoi(cp + 1) == 0) 3154 *cp = '\0'; 3155 3156 /* 3157 * if the interface is IPv4 3158 * if we have a IPv6 address family restriction return 3159 * so it won't print 3160 * if we are in IPv4 compatibility mode, clear out IFF_IPV4 3161 * so we don't print it. 3162 */ 3163 if (flags & IFF_IPV4) { 3164 if (p && p->af_af == AF_INET6) 3165 return (-1); 3166 if (v4compat) 3167 flags &= ~IFF_IPV4; 3168 3169 (void) printf("%s inet plumb", lifname); 3170 } else if (flags & IFF_IPV6) { 3171 /* 3172 * else if the interface is IPv6 3173 * if we have a IPv4 address family restriction return 3174 * or we are in IPv4 compatibiltiy mode, return. 3175 */ 3176 if (p && p->af_af == AF_INET) 3177 return (-1); 3178 if (v4compat) 3179 return (-1); 3180 3181 (void) printf("%s inet6 plumb", lifname); 3182 } 3183 3184 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3185 if (ioctl(s, SIOCGLIFMETRIC, (caddr_t)&lifr) < 0) { 3186 Perror0_exit("configinfo: SIOCGLIFMETRIC"); 3187 } else { 3188 if (lifr.lifr_metric) 3189 (void) printf(" metric %d ", lifr.lifr_metric); 3190 } 3191 if (((flags & (IFF_VIRTUAL|IFF_LOOPBACK)) != IFF_VIRTUAL) && 3192 ioctl(s, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) 3193 (void) printf(" mtu %d", lifr.lifr_metric); 3194 3195 /* Index only applies to the zeroth interface */ 3196 if (lifnum(name) == 0) { 3197 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) 3198 (void) printf(" index %d", lifr.lifr_index); 3199 } 3200 3201 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) == 0) { 3202 if (lifr.lifr_index != 0) { 3203 if (if_indextoname(lifr.lifr_index, 3204 if_usesrc_name) != NULL) { 3205 (void) printf(" usesrc %s", if_usesrc_name); 3206 } 3207 } 3208 } 3209 3210 if (p != NULL) { 3211 (*p->af_configinfo)(1, flags); 3212 } else { 3213 for (p = afs; p->af_name; p++) { 3214 (void) close(s); 3215 s = socket(SOCKET_AF(p->af_af), SOCK_DGRAM, 0); 3216 /* set global af for use in p->af_configinfo */ 3217 af = p->af_af; 3218 if (s == -1) { 3219 Perror0_exit("socket"); 3220 } 3221 (*p->af_configinfo)(0, flags); 3222 } 3223 } 3224 3225 (void) printf("\n"); 3226 return (0); 3227 } 3228 3229 static void 3230 print_tsec(struct iftun_req *tparams) 3231 { 3232 ipsec_req_t *ipsr; 3233 3234 (void) printf("\ttunnel security settings "); 3235 /* 3236 * Deal with versioning, for now just point 3237 * an ipsec_req_t at ifta_secinfo. If versions 3238 * change, something else will overlay ifta_secinfo. 3239 */ 3240 assert(tparams->ifta_vers == IFTUN_VERSION); 3241 3242 if (tparams->ifta_flags & IFTUN_COMPLEX_SECURITY) { 3243 (void) printf("--> use 'ipsecconf -ln -i %s'", 3244 tparams->ifta_lifr_name); 3245 } else { 3246 ipsr = (ipsec_req_t *)(&tparams->ifta_secinfo); 3247 if (ipsr->ipsr_ah_req & IPSEC_PREF_REQUIRED) { 3248 (void) printf("ah (%s) ", 3249 rparsealg(ipsr->ipsr_auth_alg, IPSEC_PROTO_AH)); 3250 } 3251 if (ipsr->ipsr_esp_req & IPSEC_PREF_REQUIRED) { 3252 (void) printf("esp (%s", 3253 rparsealg(ipsr->ipsr_esp_alg, IPSEC_PROTO_ESP)); 3254 (void) printf("/%s)", 3255 rparsealg(ipsr->ipsr_esp_auth_alg, IPSEC_PROTO_AH)); 3256 } 3257 } 3258 (void) printf("\n"); 3259 } 3260 3261 static void 3262 tun_status(void) 3263 { 3264 icfg_if_t interface; 3265 int rc; 3266 icfg_handle_t handle; 3267 int protocol; 3268 char srcbuf[INET6_ADDRSTRLEN]; 3269 char dstbuf[INET6_ADDRSTRLEN]; 3270 boolean_t tabbed; 3271 uint8_t hoplimit; 3272 int16_t encaplimit; 3273 struct sockaddr_storage taddr; 3274 socklen_t socklen = sizeof (taddr); 3275 3276 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 3277 interface.if_protocol = SOCKET_AF(af); 3278 if ((rc = icfg_open(&handle, &interface)) != ICFG_SUCCESS) 3279 Perror0_exit((char *)icfg_errmsg(rc)); 3280 3281 /* 3282 * only print tunnel info for lun 0. If ioctl fails, assume 3283 * we are not a tunnel 3284 */ 3285 if (strchr(name, ':') != NULL || 3286 icfg_get_tunnel_lower(handle, &protocol) != ICFG_SUCCESS) { 3287 icfg_close(handle); 3288 return; 3289 } 3290 3291 switch (protocol) { 3292 case AF_INET: 3293 (void) printf("\tinet"); 3294 break; 3295 case AF_INET6: 3296 (void) printf("\tinet6"); 3297 break; 3298 default: 3299 Perror0_exit("\ttunnel: Illegal lower stream\n\t"); 3300 break; 3301 } 3302 3303 rc = icfg_get_tunnel_src(handle, (struct sockaddr *)&taddr, &socklen); 3304 if (rc == ICFG_NOT_SET) { 3305 (void) strlcpy(srcbuf, (protocol == AF_INET) ? "0.0.0.0" : 3306 "::", sizeof (srcbuf)); 3307 } else if (rc != ICFG_SUCCESS) { 3308 Perror0_exit((char *)icfg_errmsg(rc)); 3309 } else { 3310 rc = icfg_sockaddr_to_str(protocol, (struct sockaddr *)&taddr, 3311 srcbuf, sizeof (srcbuf)); 3312 if (rc != ICFG_SUCCESS) { 3313 Perror0_exit((char *)icfg_errmsg(rc)); 3314 } 3315 } 3316 3317 (void) printf(" tunnel src %s ", srcbuf); 3318 3319 rc = icfg_get_tunnel_dest(handle, (struct sockaddr *)&taddr, &socklen); 3320 if (rc == ICFG_NOT_SET) { 3321 (void) printf("\n"); 3322 } else { 3323 rc = icfg_sockaddr_to_str(protocol, (struct sockaddr *)&taddr, 3324 dstbuf, sizeof (dstbuf)); 3325 if (rc != ICFG_SUCCESS) { 3326 Perror0_exit((char *)icfg_errmsg(rc)); 3327 } 3328 (void) printf("tunnel dst %s\n", dstbuf); 3329 } 3330 3331 if (handle->ifh_tunnel_params != NULL && 3332 (handle->ifh_tunnel_params->ifta_flags & IFTUN_SECURITY)) 3333 print_tsec(handle->ifh_tunnel_params); 3334 3335 /* 3336 * tabbed indicates tabbed and printed. Use it tell us whether 3337 * to tab and that we've printed something here, so we need a 3338 * newline 3339 */ 3340 tabbed = _B_FALSE; 3341 3342 if (icfg_get_tunnel_hoplimit(handle, &hoplimit) == ICFG_SUCCESS) { 3343 (void) printf("\ttunnel hop limit %d ", hoplimit); 3344 tabbed = _B_TRUE; 3345 } 3346 3347 if ((protocol == AF_INET6) && 3348 (icfg_get_tunnel_encaplimit(handle, &encaplimit) == 3349 ICFG_SUCCESS)) { 3350 if (!tabbed) { 3351 (void) printf("\t"); 3352 tabbed = _B_TRUE; 3353 } 3354 if (encaplimit >= 0) { 3355 (void) printf("tunnel encapsulation limit %d", 3356 encaplimit); 3357 } else { 3358 (void) printf("tunnel encapsulation limit disabled"); 3359 } 3360 } 3361 3362 if (tabbed) 3363 (void) printf("\n"); 3364 3365 icfg_close(handle); 3366 } 3367 3368 static void 3369 in_status(int force, uint64_t flags) 3370 { 3371 struct sockaddr_in *sin, *laddr; 3372 struct sockaddr_in netmask = { AF_INET }; 3373 3374 if (debug) 3375 (void) printf("in_status(%s) flags 0x%llx\n", name, flags); 3376 3377 /* only print status for IPv4 interfaces */ 3378 if (!(flags & IFF_IPV4)) 3379 return; 3380 3381 /* if the interface is a tunnel, print the tunnel status */ 3382 tun_status(); 3383 3384 if (!(flags & IFF_NOLOCAL)) { 3385 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3386 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3387 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3388 errno == ENXIO) { 3389 if (!force) 3390 return; 3391 (void) memset(&lifr.lifr_addr, 0, 3392 sizeof (lifr.lifr_addr)); 3393 } else 3394 Perror0_exit("in_status: SIOCGLIFADDR"); 3395 } 3396 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3397 (void) printf("\tinet %s ", inet_ntoa(sin->sin_addr)); 3398 laddr = sin; 3399 } else { 3400 (void) printf("\tinet "); 3401 } 3402 3403 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3404 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3405 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3406 errno == ENXIO) { 3407 if (!force) 3408 return; 3409 (void) memset(&lifr.lifr_addr, 0, 3410 sizeof (lifr.lifr_addr)); 3411 } else { 3412 Perror0_exit("in_status: SIOCGLIFSUBNET"); 3413 } 3414 } 3415 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3416 if ((flags & IFF_NOLOCAL) || 3417 sin->sin_addr.s_addr != laddr->sin_addr.s_addr) { 3418 (void) printf("subnet %s/%d ", inet_ntoa(sin->sin_addr), 3419 lifr.lifr_addrlen); 3420 } 3421 if (sin->sin_family != AF_INET) { 3422 (void) printf("Wrong family: %d\n", sin->sin_family); 3423 } 3424 3425 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3426 if (ioctl(s, SIOCGLIFNETMASK, (caddr_t)&lifr) < 0) { 3427 if (errno != EADDRNOTAVAIL) 3428 Perror0_exit("in_status: SIOCGLIFNETMASK"); 3429 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 3430 } else 3431 netmask.sin_addr = 3432 ((struct sockaddr_in *)&lifr.lifr_addr)->sin_addr; 3433 if (flags & IFF_POINTOPOINT) { 3434 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3435 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3436 if (errno == EADDRNOTAVAIL) 3437 (void) memset(&lifr.lifr_addr, 0, 3438 sizeof (lifr.lifr_addr)); 3439 else 3440 Perror0_exit("in_status: SIOCGLIFDSTADDR"); 3441 } 3442 sin = (struct sockaddr_in *)&lifr.lifr_dstaddr; 3443 (void) printf("--> %s ", inet_ntoa(sin->sin_addr)); 3444 } 3445 (void) printf("netmask %x ", ntohl(netmask.sin_addr.s_addr)); 3446 if (flags & IFF_BROADCAST) { 3447 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3448 if (ioctl(s, SIOCGLIFBRDADDR, (caddr_t)&lifr) < 0) { 3449 if (errno == EADDRNOTAVAIL) 3450 (void) memset(&lifr.lifr_addr, 0, 3451 sizeof (lifr.lifr_addr)); 3452 else 3453 Perror0_exit("in_status: SIOCGLIFBRDADDR"); 3454 } 3455 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3456 if (sin->sin_addr.s_addr != 0) { 3457 (void) printf("broadcast %s", 3458 inet_ntoa(sin->sin_addr)); 3459 } 3460 } 3461 /* If there is a groupname, print it for only the physical interface */ 3462 if (strchr(name, ':') == NULL) { 3463 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) >= 0 && 3464 lifr.lifr_groupname[0] != '\0') { 3465 (void) printf("\n\tgroupname %s", lifr.lifr_groupname); 3466 } 3467 } 3468 (void) putchar('\n'); 3469 } 3470 3471 static void 3472 in6_status(int force, uint64_t flags) 3473 { 3474 char abuf[INET6_ADDRSTRLEN]; 3475 struct sockaddr_in6 *sin6, *laddr6; 3476 3477 if (debug) 3478 (void) printf("in6_status(%s) flags 0x%llx\n", name, flags); 3479 3480 if (!(flags & IFF_IPV6)) 3481 return; 3482 3483 /* if the interface is a tunnel, print the tunnel status */ 3484 tun_status(); 3485 3486 if (!(flags & IFF_NOLOCAL)) { 3487 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3488 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3489 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3490 errno == ENXIO) { 3491 if (!force) 3492 return; 3493 (void) memset(&lifr.lifr_addr, 0, 3494 sizeof (lifr.lifr_addr)); 3495 } else 3496 Perror0_exit("in_status6: SIOCGLIFADDR"); 3497 } 3498 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3499 (void) printf("\tinet6 %s/%d ", 3500 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3501 abuf, sizeof (abuf)), 3502 lifr.lifr_addrlen); 3503 laddr6 = sin6; 3504 } else { 3505 (void) printf("\tinet6 "); 3506 } 3507 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3508 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3509 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3510 errno == ENXIO) { 3511 if (!force) 3512 return; 3513 (void) memset(&lifr.lifr_addr, 0, 3514 sizeof (lifr.lifr_addr)); 3515 } else 3516 Perror0_exit("in_status6: SIOCGLIFSUBNET"); 3517 } 3518 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3519 if ((flags & IFF_NOLOCAL) || 3520 !IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &laddr6->sin6_addr)) { 3521 (void) printf("subnet %s/%d ", 3522 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3523 abuf, sizeof (abuf)), 3524 lifr.lifr_addrlen); 3525 } 3526 if (sin6->sin6_family != AF_INET6) { 3527 (void) printf("Wrong family: %d\n", sin6->sin6_family); 3528 } 3529 if (flags & IFF_POINTOPOINT) { 3530 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3531 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3532 if (errno == EADDRNOTAVAIL) 3533 (void) memset(&lifr.lifr_addr, 0, 3534 sizeof (lifr.lifr_addr)); 3535 else 3536 Perror0_exit("in_status6: SIOCGLIFDSTADDR"); 3537 } 3538 sin6 = (struct sockaddr_in6 *)&lifr.lifr_dstaddr; 3539 (void) printf("--> %s ", 3540 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3541 abuf, sizeof (abuf))); 3542 } 3543 if (verbose) { 3544 (void) putchar('\n'); 3545 (void) putchar('\t'); 3546 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3547 if (ioctl(s, SIOCGLIFTOKEN, (caddr_t)&lifr) < 0) { 3548 if (errno == EADDRNOTAVAIL || errno == EINVAL) 3549 (void) memset(&lifr.lifr_addr, 0, 3550 sizeof (lifr.lifr_addr)); 3551 else 3552 Perror0_exit("in_status6: SIOCGLIFTOKEN"); 3553 } else { 3554 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3555 (void) printf("token %s/%d ", 3556 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3557 abuf, sizeof (abuf)), 3558 lifr.lifr_addrlen); 3559 } 3560 if (ioctl(s, SIOCGLIFLNKINFO, (caddr_t)&lifr) < 0) { 3561 if (errno != EINVAL) { 3562 Perror0_exit("in_status6: SIOCGLIFLNKINFO"); 3563 } 3564 } else { 3565 (void) printf("maxhops %u, reachtime %u ms, " 3566 "reachretrans %u ms, maxmtu %u ", 3567 lifr.lifr_ifinfo.lir_maxhops, 3568 lifr.lifr_ifinfo.lir_reachtime, 3569 lifr.lifr_ifinfo.lir_reachretrans, 3570 lifr.lifr_ifinfo.lir_maxmtu); 3571 } 3572 } 3573 /* If there is a groupname, print it for only the physical interface */ 3574 if (strchr(name, ':') == NULL) { 3575 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) >= 0 && 3576 lifr.lifr_groupname[0] != '\0') { 3577 (void) printf("\n\tgroupname %s", lifr.lifr_groupname); 3578 } 3579 } 3580 (void) putchar('\n'); 3581 } 3582 3583 static void 3584 in_configinfo(int force, uint64_t flags) 3585 { 3586 struct sockaddr_in *sin, *laddr; 3587 struct sockaddr_in netmask = { AF_INET }; 3588 3589 if (debug) 3590 (void) printf("in_configinfo(%s) flags 0x%llx\n", name, flags); 3591 3592 /* only configinfo info for IPv4 interfaces */ 3593 if (!(flags & IFF_IPV4)) 3594 return; 3595 3596 if (!(flags & IFF_NOLOCAL)) { 3597 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3598 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3599 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3600 errno == ENXIO) { 3601 if (!force) 3602 return; 3603 (void) memset(&lifr.lifr_addr, 0, 3604 sizeof (lifr.lifr_addr)); 3605 } else 3606 Perror0_exit("in_configinfo: SIOCGLIFADDR"); 3607 } 3608 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3609 (void) printf(" set %s ", inet_ntoa(sin->sin_addr)); 3610 laddr = sin; 3611 } 3612 3613 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3614 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3615 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3616 errno == ENXIO) { 3617 if (!force) 3618 return; 3619 (void) memset(&lifr.lifr_addr, 0, 3620 sizeof (lifr.lifr_addr)); 3621 } else { 3622 Perror0_exit("in_configinfo: SIOCGLIFSUBNET"); 3623 } 3624 } 3625 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3626 3627 if ((flags & IFF_NOLOCAL) || 3628 sin->sin_addr.s_addr != laddr->sin_addr.s_addr) { 3629 (void) printf(" subnet %s/%d ", inet_ntoa(sin->sin_addr), 3630 lifr.lifr_addrlen); 3631 } 3632 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3633 if (ioctl(s, SIOCGLIFNETMASK, (caddr_t)&lifr) < 0) { 3634 if (errno != EADDRNOTAVAIL) 3635 Perror0_exit("in_configinfo: SIOCGLIFNETMASK"); 3636 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 3637 } else 3638 netmask.sin_addr = 3639 ((struct sockaddr_in *)&lifr.lifr_addr)->sin_addr; 3640 if (flags & IFF_POINTOPOINT) { 3641 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3642 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3643 if (errno == EADDRNOTAVAIL) 3644 (void) memset(&lifr.lifr_addr, 0, 3645 sizeof (lifr.lifr_addr)); 3646 else 3647 Perror0_exit("in_configinfo: SIOCGLIFDSTADDR"); 3648 } 3649 sin = (struct sockaddr_in *)&lifr.lifr_dstaddr; 3650 (void) printf(" destination %s ", inet_ntoa(sin->sin_addr)); 3651 } 3652 (void) printf(" netmask 0x%x ", ntohl(netmask.sin_addr.s_addr)); 3653 if (flags & IFF_BROADCAST) { 3654 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3655 if (ioctl(s, SIOCGLIFBRDADDR, (caddr_t)&lifr) < 0) { 3656 if (errno == EADDRNOTAVAIL) 3657 (void) memset(&lifr.lifr_addr, 0, 3658 sizeof (lifr.lifr_addr)); 3659 else 3660 Perror0_exit("in_configinfo: SIOCGLIFBRDADDR"); 3661 } 3662 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3663 if (sin->sin_addr.s_addr != 0) { 3664 (void) printf(" broadcast %s ", 3665 inet_ntoa(sin->sin_addr)); 3666 } 3667 } 3668 3669 /* If there is a groupname, print it for only the zeroth interface */ 3670 if (lifnum(name) == 0) { 3671 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) >= 0 && 3672 lifr.lifr_groupname[0] != '\0') { 3673 (void) printf(" group %s ", lifr.lifr_groupname); 3674 } 3675 } 3676 3677 /* Print flags to configure */ 3678 print_config_flags(AF_INET, flags); 3679 } 3680 3681 static void 3682 in6_configinfo(int force, uint64_t flags) 3683 { 3684 char abuf[INET6_ADDRSTRLEN]; 3685 struct sockaddr_in6 *sin6, *laddr6; 3686 3687 if (debug) 3688 (void) printf("in6_configinfo(%s) flags 0x%llx\n", name, 3689 flags); 3690 3691 if (!(flags & IFF_IPV6)) 3692 return; 3693 3694 if (!(flags & IFF_NOLOCAL)) { 3695 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3696 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3697 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3698 errno == ENXIO) { 3699 if (!force) 3700 return; 3701 (void) memset(&lifr.lifr_addr, 0, 3702 sizeof (lifr.lifr_addr)); 3703 } else 3704 Perror0_exit("in6_configinfo: SIOCGLIFADDR"); 3705 } 3706 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3707 (void) printf(" set %s/%d ", 3708 inet_ntop(AF_INET6, &sin6->sin6_addr, abuf, sizeof (abuf)), 3709 lifr.lifr_addrlen); 3710 laddr6 = sin6; 3711 } 3712 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3713 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3714 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3715 errno == ENXIO) { 3716 if (!force) 3717 return; 3718 (void) memset(&lifr.lifr_addr, 0, 3719 sizeof (lifr.lifr_addr)); 3720 } else 3721 Perror0_exit("in6_configinfo: SIOCGLIFSUBNET"); 3722 } 3723 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3724 if ((flags & IFF_NOLOCAL) || 3725 !IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &laddr6->sin6_addr)) { 3726 (void) printf(" subnet %s/%d ", 3727 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3728 abuf, sizeof (abuf)), 3729 lifr.lifr_addrlen); 3730 } 3731 3732 if (flags & IFF_POINTOPOINT) { 3733 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3734 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3735 if (errno == EADDRNOTAVAIL) 3736 (void) memset(&lifr.lifr_addr, 0, 3737 sizeof (lifr.lifr_addr)); 3738 else 3739 Perror0_exit("in6_configinfo: SIOCGLIFDSTADDR"); 3740 } 3741 sin6 = (struct sockaddr_in6 *)&lifr.lifr_dstaddr; 3742 (void) printf(" destination %s ", 3743 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3744 abuf, sizeof (abuf))); 3745 } 3746 3747 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3748 if (ioctl(s, SIOCGLIFTOKEN, (caddr_t)&lifr) < 0) { 3749 if (errno == EADDRNOTAVAIL || errno == EINVAL) 3750 (void) memset(&lifr.lifr_addr, 0, 3751 sizeof (lifr.lifr_addr)); 3752 else 3753 Perror0_exit("in6_configinfo: SIOCGLIFTOKEN"); 3754 } else { 3755 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3756 (void) printf(" token %s/%d ", 3757 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3758 abuf, sizeof (abuf)), 3759 lifr.lifr_addrlen); 3760 } 3761 3762 /* If there is a groupname, print it for only the zeroth interface */ 3763 if (lifnum(name) == 0) { 3764 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) >= 0 && 3765 lifr.lifr_groupname[0] != '\0') { 3766 (void) printf(" group %s ", lifr.lifr_groupname); 3767 } 3768 } 3769 3770 /* Print flags to configure */ 3771 print_config_flags(AF_INET6, flags); 3772 } 3773 3774 /* 3775 * We need to plink both the arp-device stream and the arp-ip-device stream. 3776 * However the muxid is stored only in IP. Plumbing 2 streams individually 3777 * is not atomic, and if ifconfig is killed, the resulting plumbing can 3778 * be inconsistent. For eg. if only the arp stream is plumbed, we have lost 3779 * the muxid, and the half-baked plumbing can neither be unplumbed nor 3780 * replumbed, thus requiring a reboot. To avoid the above the following 3781 * scheme is used. 3782 * 3783 * Ifconfig asks IP to enforce atomicity of plumbing the arp and IP streams. 3784 * This is done by pushing arp on to the mux (/dev/udp). ARP adds some 3785 * extra information in the I_PLINK and I_PUNLINK ioctls to let IP know 3786 * that the plumbing/unplumbing has to be done atomically. Ifconfig plumbs 3787 * the IP stream first, and unplumbs it last. The kernel (IP) does not 3788 * allow IP stream to be unplumbed without unplumbing arp stream. Similarly 3789 * it does not allow arp stream to be plumbed before IP stream is plumbed. 3790 * There is no need to use SIOCSLIFMUXID, since the whole operation is atomic, 3791 * and IP uses the info in the I_PLINK message to get the muxid. 3792 * 3793 * a. STREAMS does not allow us to use /dev/ip itself as the mux. So we use 3794 * /dev/udp{,6}. 3795 * b. SIOCGLIFMUXID returns the muxid corresponding to the V4 or V6 stream 3796 * depending on the open i.e. V4 vs V6 open. So we need to use /dev/udp 3797 * or /dev/udp6 for SIOCGLIFMUXID and SIOCSLIFMUXID. 3798 * c. We need to push ARP in order to get the required kernel support for 3799 * atomic plumbings. The actual work done by ARP is explained in arp.c 3800 * Without pushing ARP, we will still be able to plumb/unplumb. But 3801 * it is not atomic, and is supported by the kernel for backward 3802 * compatibility for other utilities like atmifconfig etc. In this case 3803 * the utility must use SIOCSLIFMUXID. 3804 */ 3805 static int 3806 ifplumb(const char *linkname, const char *ifname, boolean_t genppa, int af) 3807 { 3808 int arp_muxid = -1, ip_muxid; 3809 int mux_fd, ip_fd, arp_fd; 3810 int retval; 3811 char *udp_dev_name; 3812 uint64_t flags; 3813 uint_t dlpi_flags; 3814 dlpi_handle_t dh_arp, dh_ip; 3815 3816 /* 3817 * Always dlpi_open() with DLPI_NOATTACH because the IP and ARP module 3818 * will do the attach themselves for DLPI style-2 links. 3819 */ 3820 dlpi_flags = DLPI_NOATTACH; 3821 3822 /* 3823 * If `linkname' is the special token IPMPSTUB, then this is a request 3824 * to create an IPMP interface atop /dev/ipmpstub0. (We can't simply 3825 * pass "ipmpstub0" as `linkname' since an admin *could* have a normal 3826 * vanity-named link named "ipmpstub0" that they'd like to plumb.) 3827 */ 3828 if (linkname == IPMPSTUB) { 3829 linkname = "ipmpstub0"; 3830 dlpi_flags |= DLPI_DEVONLY; 3831 } 3832 3833 retval = dlpi_open(linkname, &dh_ip, dlpi_flags); 3834 if (retval != DLPI_SUCCESS) 3835 Perrdlpi_exit("cannot open link", linkname, retval); 3836 3837 if (debug) { 3838 (void) printf("ifconfig: ifplumb: link %s, ifname %s, " 3839 "genppa %u\n", linkname, ifname, genppa); 3840 } 3841 3842 ip_fd = dlpi_fd(dh_ip); 3843 if (ioctl(ip_fd, I_PUSH, IP_MOD_NAME) == -1) 3844 Perror2_exit("I_PUSH", IP_MOD_NAME); 3845 3846 /* 3847 * Push the ARP module onto the interface stream. IP uses 3848 * this to send resolution requests up to ARP. We need to 3849 * do this before the SLIFNAME ioctl is sent down because 3850 * the interface becomes publicly known as soon as the SLIFNAME 3851 * ioctl completes. Thus some other process trying to bring up 3852 * the interface after SLIFNAME but before we have pushed ARP 3853 * could hang. We pop the module again later if it is not needed. 3854 */ 3855 if (ioctl(ip_fd, I_PUSH, ARP_MOD_NAME) == -1) 3856 Perror2_exit("I_PUSH", ARP_MOD_NAME); 3857 3858 /* 3859 * Prepare to set IFF_IPV4/IFF_IPV6 flags as part of SIOCSLIFNAME. 3860 * (At this point in time the kernel also allows an override of the 3861 * IFF_CANTCHANGE flags.) 3862 */ 3863 lifr.lifr_name[0] = '\0'; 3864 if (ioctl(ip_fd, SIOCGLIFFLAGS, (char *)&lifr) == -1) 3865 Perror0_exit("ifplumb: SIOCGLIFFLAGS"); 3866 3867 if (af == AF_INET6) { 3868 flags = lifr.lifr_flags | IFF_IPV6; 3869 flags &= ~(IFF_BROADCAST | IFF_IPV4); 3870 } else { 3871 flags = lifr.lifr_flags | IFF_IPV4; 3872 flags &= ~IFF_IPV6; 3873 } 3874 3875 /* 3876 * Set the interface name. If we've been asked to generate the PPA, 3877 * then find the lowest available PPA (only currently used for IPMP 3878 * interfaces). Otherwise, use the interface name as-is. 3879 */ 3880 if (genppa) { 3881 int ppa; 3882 3883 /* 3884 * We'd like to just set lifr_ppa to UINT_MAX and have the 3885 * kernel pick a PPA. Unfortunately, that would mishandle 3886 * two cases: 3887 * 3888 * 1. If the PPA is available but the groupname is taken 3889 * (e.g., the "ipmp2" IP interface name is available 3890 * but the "ipmp2" groupname is taken) then the 3891 * auto-assignment by the kernel will fail. 3892 * 3893 * 2. If we're creating (e.g.) an IPv6-only IPMP 3894 * interface, and there's already an IPv4-only IPMP 3895 * interface, the kernel will allow us to accidentally 3896 * reuse the IPv6 IPMP interface name (since 3897 * SIOCSLIFNAME uniqueness is per-interface-type). 3898 * This will cause administrative confusion. 3899 * 3900 * Thus, we instead take a brute-force approach of checking 3901 * whether the IPv4 or IPv6 name is already in-use before 3902 * attempting the SIOCSLIFNAME. As per (1) above, the 3903 * SIOCSLIFNAME may still fail, in which case we just proceed 3904 * to the next one. If this approach becomes too slow, we 3905 * can add a new SIOC* to handle this case in the kernel. 3906 */ 3907 for (ppa = 0; ppa < UINT_MAX; ppa++) { 3908 (void) snprintf(lifr.lifr_name, LIFNAMSIZ, "%s%d", 3909 ifname, ppa); 3910 3911 if (ioctl(s4, SIOCGLIFFLAGS, &lifr) != -1 || 3912 errno != ENXIO) 3913 continue; 3914 3915 if (ioctl(s6, SIOCGLIFFLAGS, &lifr) != -1 || 3916 errno != ENXIO) 3917 continue; 3918 3919 lifr.lifr_ppa = ppa; 3920 lifr.lifr_flags = flags; 3921 retval = ioctl(ip_fd, SIOCSLIFNAME, &lifr); 3922 if (retval != -1 || errno != EEXIST) 3923 break; 3924 } 3925 } else { 3926 ifspec_t ifsp; 3927 3928 /* 3929 * The interface name could have come from the command-line; 3930 * check it. 3931 */ 3932 if (!ifparse_ifspec(ifname, &ifsp) || ifsp.ifsp_lunvalid) 3933 Perror2_exit("invalid IP interface name", ifname); 3934 3935 /* 3936 * Before we call SIOCSLIFNAME, ensure that the IPMP group 3937 * interface for this address family exists. Otherwise, the 3938 * kernel will kick the interface out of the group when we do 3939 * the SIOCSLIFNAME. 3940 * 3941 * Example: suppose bge0 is plumbed for IPv4 and in group "a". 3942 * If we're now plumbing bge0 for IPv6, but the IPMP group 3943 * interface for "a" is not plumbed for IPv6, the SIOCSLIFNAME 3944 * will kick bge0 out of group "a", which is undesired. 3945 */ 3946 if (create_ipmp_peer(af, ifname) == -1) { 3947 (void) fprintf(stderr, "ifconfig: warning: cannot " 3948 "create %s IPMP group; %s will be removed from " 3949 "group\n", af == AF_INET ? "IPv4" : "IPv6", ifname); 3950 } 3951 3952 lifr.lifr_ppa = ifsp.ifsp_ppa; 3953 lifr.lifr_flags = flags; 3954 (void) strlcpy(lifr.lifr_name, ifname, LIFNAMSIZ); 3955 retval = ioctl(ip_fd, SIOCSLIFNAME, &lifr); 3956 } 3957 3958 if (retval == -1) { 3959 if (errno != EEXIST) 3960 Perror0_exit("SIOCSLIFNAME for ip"); 3961 /* 3962 * This difference between the way we behave for EEXIST 3963 * and that with other errors exists to preserve legacy 3964 * behaviour. Earlier when foreachinterface() and matchif() 3965 * were doing the duplicate interface name checks, for 3966 * already existing interfaces, inetplumb() returned "0". 3967 * To preserve this behaviour, Perror0() and return are 3968 * called for EEXIST. 3969 */ 3970 Perror0("SIOCSLIFNAME for ip"); 3971 return (-1); 3972 } 3973 3974 /* Get the full set of existing flags for this stream */ 3975 if (ioctl(ip_fd, SIOCGLIFFLAGS, (char *)&lifr) == -1) 3976 Perror0_exit("ifplumb: SIOCGLIFFLAGS"); 3977 3978 if (debug) { 3979 (void) printf("ifconfig: ifplumb: %s got flags:\n", 3980 lifr.lifr_name); 3981 print_flags(lifr.lifr_flags); 3982 (void) putchar('\n'); 3983 } 3984 3985 /* Check if arp is not actually needed */ 3986 if (lifr.lifr_flags & (IFF_NOARP|IFF_IPV6)) { 3987 if (ioctl(ip_fd, I_POP, 0) == -1) 3988 Perror2_exit("I_POP", ARP_MOD_NAME); 3989 } 3990 3991 /* 3992 * Open "/dev/udp" for use as a multiplexor to PLINK the 3993 * interface stream under. We use "/dev/udp" instead of "/dev/ip" 3994 * since STREAMS will not let you PLINK a driver under itself, 3995 * and "/dev/ip" is typically the driver at the bottom of 3996 * the stream for tunneling interfaces. 3997 */ 3998 if (af == AF_INET6) 3999 udp_dev_name = UDP6_DEV_NAME; 4000 else 4001 udp_dev_name = UDP_DEV_NAME; 4002 if ((mux_fd = open_arp_on_udp(udp_dev_name)) == -1) 4003 exit(EXIT_FAILURE); 4004 4005 /* Check if arp is not needed */ 4006 if (lifr.lifr_flags & (IFF_NOARP|IFF_IPV6)) { 4007 /* 4008 * PLINK the interface stream so that ifconfig can exit 4009 * without tearing down the stream. 4010 */ 4011 if ((ip_muxid = ioctl(mux_fd, I_PLINK, ip_fd)) == -1) 4012 Perror0_exit("I_PLINK for ip"); 4013 (void) close(mux_fd); 4014 return (lifr.lifr_ppa); 4015 } 4016 4017 /* 4018 * This interface does use ARP, so set up a separate stream 4019 * from the interface to ARP. 4020 * 4021 * Note: modules specified by the user are pushed 4022 * only on the interface stream, not on the ARP stream. 4023 */ 4024 if (debug) 4025 (void) printf("ifconfig: ifplumb: interface %s", ifname); 4026 4027 retval = dlpi_open(linkname, &dh_arp, dlpi_flags); 4028 if (retval != DLPI_SUCCESS) 4029 Perrdlpi_exit("cannot open link", linkname, retval); 4030 4031 arp_fd = dlpi_fd(dh_arp); 4032 if (ioctl(arp_fd, I_PUSH, ARP_MOD_NAME) == -1) 4033 Perror2_exit("I_PUSH", ARP_MOD_NAME); 4034 4035 /* 4036 * Tell ARP the name and unit number for this interface. 4037 * Note that arp has no support for transparent ioctls. 4038 */ 4039 if (strioctl(arp_fd, SIOCSLIFNAME, &lifr, sizeof (lifr)) == -1) { 4040 if (errno != EEXIST) 4041 Perror0_exit("SIOCSLIFNAME for arp"); 4042 Perror0("SIOCSLIFNAME for arp"); 4043 goto out; 4044 } 4045 4046 /* 4047 * PLINK the IP and ARP streams so that ifconfig can exit 4048 * without tearing down the stream. 4049 */ 4050 if ((ip_muxid = ioctl(mux_fd, I_PLINK, ip_fd)) == -1) 4051 Perror0_exit("I_PLINK for ip"); 4052 if ((arp_muxid = ioctl(mux_fd, I_PLINK, arp_fd)) == -1) { 4053 (void) ioctl(mux_fd, I_PUNLINK, ip_muxid); 4054 Perror0_exit("I_PLINK for arp"); 4055 } 4056 4057 if (debug) 4058 (void) printf("arp muxid = %d\n", arp_muxid); 4059 out: 4060 dlpi_close(dh_ip); 4061 dlpi_close(dh_arp); 4062 (void) close(mux_fd); 4063 return (lifr.lifr_ppa); 4064 } 4065 4066 /* 4067 * If this is a physical interface then remove it. 4068 * If it is a logical interface name use SIOCLIFREMOVEIF to 4069 * remove it. In both cases fail if it doesn't exist. 4070 */ 4071 /* ARGSUSED */ 4072 static int 4073 inetunplumb(char *arg, int64_t param) 4074 { 4075 int ip_muxid, arp_muxid; 4076 int mux_fd; 4077 int muxid_fd; 4078 char *udp_dev_name; 4079 char *strptr; 4080 uint64_t flags; 4081 boolean_t changed_arp_muxid = _B_FALSE; 4082 int save_errno; 4083 boolean_t v6 = (afp->af_af == AF_INET6); 4084 4085 strptr = strchr(name, ':'); 4086 if (strptr != NULL || strcmp(name, LOOPBACK_IF) == 0) { 4087 /* Can't unplumb logical interface zero */ 4088 if (strptr != NULL && strcmp(strptr, ":0") == 0) { 4089 (void) fprintf(stderr, "ifconfig: unplumb:" 4090 " Cannot unplumb %s: Invalid interface\n", name); 4091 exit(1); 4092 } 4093 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4094 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 4095 4096 if (ioctl(s, SIOCLIFREMOVEIF, (caddr_t)&lifr) < 0) 4097 Perror0_exit("unplumb: SIOCLIFREMOVEIF"); 4098 return (0); 4099 } 4100 4101 /* 4102 * We used /dev/udp or udp6 to set up the mux. So we have to use 4103 * the same now for PUNLINK also. 4104 */ 4105 if (v6) 4106 udp_dev_name = UDP6_DEV_NAME; 4107 else 4108 udp_dev_name = UDP_DEV_NAME; 4109 4110 if ((muxid_fd = open(udp_dev_name, O_RDWR)) == -1) 4111 exit(EXIT_FAILURE); 4112 4113 if ((mux_fd = open_arp_on_udp(udp_dev_name)) == -1) 4114 exit(EXIT_FAILURE); 4115 4116 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4117 if (ioctl(muxid_fd, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 4118 Perror0_exit("unplumb: SIOCGLIFFLAGS"); 4119 } 4120 flags = lifr.lifr_flags; 4121 4122 if (flags & IFF_IPMP) { 4123 lifgroupinfo_t lifgr; 4124 ifaddrlistx_t *ifaddrs, *ifaddrp; 4125 4126 /* 4127 * The kernel will fail the I_PUNLINK if the group still has 4128 * members, but check now to provide a better error message. 4129 */ 4130 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) == -1) 4131 Perror0_exit("unplumb: SIOCGLIFGROUPNAME"); 4132 4133 (void) strlcpy(lifgr.gi_grname, lifr.lifr_groupname, 4134 LIFGRNAMSIZ); 4135 if (ioctl(s, SIOCGLIFGROUPINFO, &lifgr) == -1) 4136 Perror0_exit("unplumb: SIOCGLIFGROUPINFO"); 4137 4138 if ((v6 && lifgr.gi_nv6 != 0) || (!v6 && lifgr.gi_nv4 != 0)) { 4139 (void) fprintf(stderr, "ifconfig: %s: cannot unplumb:" 4140 " IPMP group is not empty\n", name); 4141 exit(1); 4142 } 4143 4144 /* 4145 * The kernel will fail the I_PUNLINK if the IPMP interface 4146 * has administratively up addresses; bring 'em down. 4147 */ 4148 if (ifaddrlistx(name, IFF_UP|IFF_DUPLICATE, 0, &ifaddrs) == -1) 4149 Perror2_exit(name, "cannot get address list"); 4150 4151 ifaddrp = ifaddrs; 4152 for (; ifaddrp != NULL; ifaddrp = ifaddrp->ia_next) { 4153 if (((ifaddrp->ia_flags & IFF_IPV6) && !v6) || 4154 (!(ifaddrp->ia_flags & IFF_IPV6) && v6)) 4155 continue; 4156 4157 if (!ifaddr_down(ifaddrp)) { 4158 Perror2_exit(ifaddrp->ia_name, 4159 "cannot bring down"); 4160 } 4161 } 4162 ifaddrlistx_free(ifaddrs); 4163 } 4164 4165 if (ioctl(muxid_fd, SIOCGLIFMUXID, (caddr_t)&lifr) < 0) { 4166 Perror0_exit("unplumb: SIOCGLIFMUXID"); 4167 } 4168 arp_muxid = lifr.lifr_arp_muxid; 4169 ip_muxid = lifr.lifr_ip_muxid; 4170 /* 4171 * We don't have a good way of knowing whether the arp stream is 4172 * plumbed. We can't rely on IFF_NOARP because someone could 4173 * have turned it off later using "ifconfig xxx -arp". 4174 */ 4175 if (arp_muxid != 0) { 4176 if (debug) 4177 (void) printf("arp_muxid %d\n", arp_muxid); 4178 if (ioctl(mux_fd, I_PUNLINK, arp_muxid) < 0) { 4179 if ((errno == EINVAL) && 4180 (flags & (IFF_NOARP | IFF_IPV6))) { 4181 /* 4182 * Some plumbing utilities set the muxid to 4183 * -1 or some invalid value to signify that 4184 * there is no arp stream. Set the muxid to 0 4185 * before trying to unplumb the IP stream. 4186 * IP does not allow the IP stream to be 4187 * unplumbed if it sees a non-null arp muxid, 4188 * for consistency of IP-ARP streams. 4189 */ 4190 lifr.lifr_arp_muxid = 0; 4191 (void) ioctl(muxid_fd, SIOCSLIFMUXID, 4192 (caddr_t)&lifr); 4193 changed_arp_muxid = _B_TRUE; 4194 } else { 4195 Perror0("I_PUNLINK for arp"); 4196 } 4197 } 4198 } 4199 if (debug) 4200 (void) printf("ip_muxid %d\n", ip_muxid); 4201 4202 if (ioctl(mux_fd, I_PUNLINK, ip_muxid) < 0) { 4203 if (changed_arp_muxid) { 4204 /* 4205 * Some error occurred, and we need to restore 4206 * everything back to what it was. 4207 */ 4208 save_errno = errno; 4209 lifr.lifr_arp_muxid = arp_muxid; 4210 lifr.lifr_ip_muxid = ip_muxid; 4211 (void) ioctl(muxid_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 4212 errno = save_errno; 4213 } 4214 Perror0_exit("I_PUNLINK for ip"); 4215 } 4216 (void) close(mux_fd); 4217 (void) close(muxid_fd); 4218 return (0); 4219 } 4220 4221 /* 4222 * If this is a physical interface then create it unless it is already 4223 * present. If it is a logical interface name use SIOCLIFADDIF to 4224 * create and (and fail it if already exists.) 4225 * As a special case send SIOCLIFADDIF for the loopback interface. This 4226 * is needed since there is no other notion of plumbing the loopback 4227 * interface. 4228 */ 4229 /* ARGSUSED */ 4230 static int 4231 inetplumb(char *arg, int64_t param) 4232 { 4233 char *strptr; 4234 boolean_t islo; 4235 zoneid_t zoneid; 4236 4237 strptr = strchr(name, ':'); 4238 islo = (strcmp(name, LOOPBACK_IF) == 0); 4239 4240 if (strptr != NULL || islo) { 4241 (void) memset(&lifr, 0, sizeof (lifr)); 4242 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4243 if (islo && ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) >= 0) { 4244 if (debug) { 4245 (void) fprintf(stderr, 4246 "ifconfig: %s already exists\n", name); 4247 } 4248 return (0); 4249 } 4250 if (ioctl(s, SIOCLIFADDIF, (caddr_t)&lifr) < 0) { 4251 if (errno == EEXIST) { 4252 if (debug) { 4253 (void) fprintf(stderr, 4254 "ifconfig: %s already exists\n", 4255 name); 4256 } 4257 } else { 4258 Perror2_exit("plumb: SIOCLIFADDIF", name); 4259 } 4260 } 4261 return (0); 4262 } 4263 4264 /* 4265 * For global zone, check if the interface is used by a non-global 4266 * zone, note that the non-global zones doesn't need this check, 4267 * because zoneadm has taken care of this when the zone boots. 4268 */ 4269 zoneid = getzoneid(); 4270 if (zoneid == GLOBAL_ZONEID) { 4271 int ret; 4272 4273 zoneid = ALL_ZONES; 4274 ret = zone_check_datalink(&zoneid, name); 4275 if (ret == 0) { 4276 char zonename[ZONENAME_MAX]; 4277 4278 (void) getzonenamebyid(zoneid, zonename, ZONENAME_MAX); 4279 (void) fprintf(stderr, "%s is used by non-global" 4280 "zone: %s\n", name, zonename); 4281 return (1); 4282 } 4283 } 4284 4285 if (debug) 4286 (void) printf("inetplumb: %s af %d\n", name, afp->af_af); 4287 4288 (void) ifplumb(name, name, _B_FALSE, afp->af_af); 4289 return (0); 4290 } 4291 4292 /* ARGSUSED */ 4293 static int 4294 inetipmp(char *arg, int64_t param) 4295 { 4296 int retval; 4297 4298 /* 4299 * Treat e.g. "ifconfig ipmp0:2 ipmp" as "ifconfig ipmp0:2 plumb". 4300 * Otherwise, try to create the requested IPMP interface. 4301 */ 4302 if (strchr(name, ':') != NULL) 4303 retval = inetplumb(arg, param); 4304 else 4305 retval = create_ipmp(name, afp->af_af, name, _B_FALSE); 4306 4307 /* 4308 * We'd return -1, but foreachinterface() doesn't propagate the error 4309 * into the exit status, so we're forced to explicitly exit(). 4310 */ 4311 if (retval == -1) 4312 exit(1); 4313 return (0); 4314 } 4315 4316 /* 4317 * Create an IPMP group `grname' with address family `af'. If `ifname' is 4318 * non-NULL, it specifies the interface name to use. Otherwise, use the name 4319 * ipmpN, where N corresponds to the lowest available integer. If `implicit' 4320 * is set, then the group is being created as a side-effect of placing an 4321 * underlying interface in a group. Also start in.mpathd if necessary. 4322 */ 4323 static int 4324 create_ipmp(const char *grname, int af, const char *ifname, boolean_t implicit) 4325 { 4326 int ppa; 4327 static int ipmp_daemon_started; 4328 4329 if (debug) { 4330 (void) printf("create_ipmp: ifname %s grname %s af %d\n", 4331 ifname != NULL ? ifname : "NULL", grname, af); 4332 } 4333 4334 if (ifname != NULL) 4335 ppa = ifplumb(IPMPSTUB, ifname, _B_FALSE, af); 4336 else 4337 ppa = ifplumb(IPMPSTUB, "ipmp", _B_TRUE, af); 4338 4339 if (ppa == -1) { 4340 Perror2(grname, "cannot create IPMP interface"); 4341 return (-1); 4342 } 4343 4344 if (ifname != NULL) 4345 (void) strlcpy(lifr.lifr_name, ifname, LIFNAMSIZ); 4346 else 4347 (void) snprintf(lifr.lifr_name, LIFNAMSIZ, "ipmp%d", ppa); 4348 4349 /* 4350 * To preserve backward-compatibility, always bring up the link-local 4351 * address for implicitly-created IPv6 IPMP interfaces. 4352 */ 4353 if (implicit && af == AF_INET6) { 4354 if (ioctl(s6, SIOCGLIFFLAGS, &lifr) == 0) { 4355 lifr.lifr_flags |= IFF_UP; 4356 (void) ioctl(s6, SIOCSLIFFLAGS, &lifr); 4357 } 4358 } 4359 4360 /* 4361 * If the caller requested a different group name, issue a 4362 * SIOCSLIFGROUPNAME on the new IPMP interface. 4363 */ 4364 if (strcmp(lifr.lifr_name, grname) != 0) { 4365 (void) strlcpy(lifr.lifr_groupname, grname, LIFGRNAMSIZ); 4366 if (ioctl(s, SIOCSLIFGROUPNAME, &lifr) == -1) { 4367 Perror0("SIOCSLIFGROUPNAME"); 4368 return (-1); 4369 } 4370 } 4371 4372 /* 4373 * If we haven't done so yet, ensure in.mpathd is started. 4374 */ 4375 if (ipmp_daemon_started++ == 0) 4376 start_ipmp_daemon(); 4377 4378 return (0); 4379 } 4380 4381 /* 4382 * Check if `ifname' is plumbed and in an IPMP group on its "other" address 4383 * family. If so, create a matching IPMP group for address family `af'. 4384 */ 4385 static int 4386 create_ipmp_peer(int af, const char *ifname) 4387 { 4388 int fd; 4389 lifgroupinfo_t lifgr; 4390 4391 assert(af == AF_INET || af == AF_INET6); 4392 4393 /* 4394 * Get the socket for the "other" address family. 4395 */ 4396 fd = (af == AF_INET) ? s6 : s4; 4397 4398 (void) strlcpy(lifr.lifr_name, ifname, LIFNAMSIZ); 4399 if (ioctl(fd, SIOCGLIFGROUPNAME, &lifr) != 0) 4400 return (0); 4401 4402 (void) strlcpy(lifgr.gi_grname, lifr.lifr_groupname, LIFGRNAMSIZ); 4403 if (ioctl(fd, SIOCGLIFGROUPINFO, &lifgr) != 0) 4404 return (0); 4405 4406 /* 4407 * If `ifname' *is* the IPMP group interface, or if the relevant 4408 * address family is already configured, then there's nothing to do. 4409 */ 4410 if (strcmp(lifgr.gi_grifname, ifname) == 0 || 4411 (af == AF_INET && lifgr.gi_v4) || (af == AF_INET6 && lifgr.gi_v6)) 4412 return (0); 4413 4414 return (create_ipmp(lifgr.gi_grname, af, lifgr.gi_grifname, _B_TRUE)); 4415 } 4416 4417 /* 4418 * Start in.mpathd if it's not already running. 4419 */ 4420 static void 4421 start_ipmp_daemon(void) 4422 { 4423 int retval; 4424 ipmp_handle_t ipmp_handle; 4425 4426 /* 4427 * Ping in.mpathd to see if it's running already. 4428 */ 4429 if ((retval = ipmp_open(&ipmp_handle)) != IPMP_SUCCESS) { 4430 (void) fprintf(stderr, "ifconfig: cannot create IPMP handle: " 4431 "%s\n", ipmp_errmsg(retval)); 4432 return; 4433 } 4434 4435 retval = ipmp_ping_daemon(ipmp_handle); 4436 ipmp_close(ipmp_handle); 4437 4438 switch (retval) { 4439 case IPMP_ENOMPATHD: 4440 break; 4441 case IPMP_SUCCESS: 4442 return; 4443 default: 4444 (void) fprintf(stderr, "ifconfig: cannot ping in.mpathd: %s\n", 4445 ipmp_errmsg(retval)); 4446 break; 4447 } 4448 4449 /* 4450 * Start in.mpathd. Note that in.mpathd will handle multiple 4451 * incarnations (ipmp_ping_daemon() is just an optimization) so we 4452 * don't need to worry about racing with another ifconfig process. 4453 */ 4454 switch (fork()) { 4455 case -1: 4456 Perror0_exit("start_ipmp_daemon: fork"); 4457 /* NOTREACHED */ 4458 case 0: 4459 (void) execl(MPATHD_PATH, MPATHD_PATH, NULL); 4460 _exit(1); 4461 /* NOTREACHED */ 4462 default: 4463 break; 4464 } 4465 } 4466 4467 /* 4468 * Bring the address named by `ifaddrp' up or down. Doesn't trust any mutable 4469 * values in ia_flags since they may be stale. 4470 */ 4471 static boolean_t 4472 ifaddr_op(ifaddrlistx_t *ifaddrp, boolean_t up) 4473 { 4474 struct lifreq lifrl; /* Local lifreq struct */ 4475 int fd = (ifaddrp->ia_flags & IFF_IPV4) ? s4 : s6; 4476 4477 (void) memset(&lifrl, 0, sizeof (lifrl)); 4478 (void) strlcpy(lifrl.lifr_name, ifaddrp->ia_name, LIFNAMSIZ); 4479 if (ioctl(fd, SIOCGLIFFLAGS, &lifrl) == -1) 4480 return (_B_FALSE); 4481 4482 if (up) { 4483 lifrl.lifr_flags |= IFF_UP; 4484 } else { 4485 /* 4486 * If we've been asked to bring down an IFF_DUPLICATE address, 4487 * then get the address and set it. This will cause IP to 4488 * clear IFF_DUPLICATE and stop the automatic recovery timer. 4489 */ 4490 if (lifrl.lifr_flags & IFF_DUPLICATE) { 4491 return (ioctl(fd, SIOCGLIFADDR, &lifrl) != -1 && 4492 ioctl(fd, SIOCSLIFADDR, &lifrl) != -1); 4493 } 4494 lifrl.lifr_flags &= ~IFF_UP; 4495 } 4496 return (ioctl(fd, SIOCSLIFFLAGS, &lifrl) == 0); 4497 } 4498 4499 static boolean_t 4500 ifaddr_up(ifaddrlistx_t *ifaddrp) 4501 { 4502 return (ifaddr_op(ifaddrp, _B_TRUE)); 4503 } 4504 4505 static boolean_t 4506 ifaddr_down(ifaddrlistx_t *ifaddrp) 4507 { 4508 return (ifaddr_op(ifaddrp, _B_FALSE)); 4509 } 4510 4511 void 4512 Perror0(const char *cmd) 4513 { 4514 Perror2(cmd, lifr.lifr_name); 4515 } 4516 4517 void 4518 Perror0_exit(const char *cmd) 4519 { 4520 Perror0(cmd); 4521 exit(1); 4522 /* NOTREACHED */ 4523 } 4524 4525 void 4526 Perror2(const char *cmd, const char *str) 4527 { 4528 int error = errno; 4529 4530 (void) fprintf(stderr, "ifconfig: %s: ", cmd); 4531 4532 switch (error) { 4533 case ENXIO: 4534 (void) fprintf(stderr, "%s: no such interface\n", str); 4535 break; 4536 case EPERM: 4537 (void) fprintf(stderr, "%s: permission denied\n", str); 4538 break; 4539 case EEXIST: 4540 (void) fprintf(stderr, "%s: already exists\n", str); 4541 break; 4542 default: 4543 errno = error; 4544 perror(str); 4545 } 4546 } 4547 4548 /* 4549 * Print out error message (Perror2()) and exit 4550 */ 4551 void 4552 Perror2_exit(const char *cmd, const char *str) 4553 { 4554 Perror2(cmd, str); 4555 exit(1); 4556 /* NOTREACHED */ 4557 } 4558 4559 void 4560 Perrdlpi(const char *cmd, const char *linkname, int err) 4561 { 4562 (void) fprintf(stderr, "ifconfig: %s \"%s\": %s\n", cmd, 4563 linkname, dlpi_strerror(err)); 4564 } 4565 4566 /* 4567 * Print out error message (Perrdlpi()) and exit 4568 */ 4569 void 4570 Perrdlpi_exit(const char *cmd, const char *linkname, int err) 4571 { 4572 Perrdlpi(cmd, linkname, err); 4573 exit(1); 4574 } 4575 4576 /* 4577 * If the last argument is non-NULL allow a <addr>/<n> syntax and 4578 * pass out <n> in *plenp. 4579 * If <n> doesn't parse return BAD_ADDR as *plenp. 4580 * If no /<n> is present return NO_PREFIX as *plenp. 4581 */ 4582 static void 4583 in_getaddr(char *s, struct sockaddr *saddr, int *plenp) 4584 { 4585 /* LINTED: alignment */ 4586 struct sockaddr_in *sin = (struct sockaddr_in *)saddr; 4587 struct hostent *hp; 4588 struct netent *np; 4589 char str[BUFSIZ]; 4590 int error_num; 4591 4592 (void) strncpy(str, s, sizeof (str)); 4593 4594 /* 4595 * Look for '/'<n> is plenp 4596 */ 4597 if (plenp != NULL) { 4598 char *cp; 4599 4600 *plenp = in_getprefixlen(str, _B_TRUE, IP_ABITS); 4601 if (*plenp == BAD_ADDR) 4602 return; 4603 cp = strchr(str, '/'); 4604 if (cp != NULL) 4605 *cp = '\0'; 4606 } else if (strchr(str, '/') != NULL) { 4607 (void) fprintf(stderr, "ifconfig: %s: unexpected '/'\n", str); 4608 exit(1); 4609 } 4610 4611 (void) memset(sin, 0, sizeof (*sin)); 4612 4613 /* 4614 * Try to catch attempts to set the broadcast address to all 1's. 4615 */ 4616 if (strcmp(str, "255.255.255.255") == 0 || 4617 (strtoul(str, (char **)NULL, 0) == 0xffffffffUL)) { 4618 sin->sin_family = AF_INET; 4619 sin->sin_addr.s_addr = 0xffffffff; 4620 return; 4621 } 4622 4623 hp = getipnodebyname(str, AF_INET, 0, &error_num); 4624 if (hp) { 4625 sin->sin_family = hp->h_addrtype; 4626 (void) memcpy(&sin->sin_addr, hp->h_addr, hp->h_length); 4627 freehostent(hp); 4628 return; 4629 } 4630 np = getnetbyname(str); 4631 if (np) { 4632 sin->sin_family = np->n_addrtype; 4633 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); 4634 return; 4635 } 4636 if (error_num == TRY_AGAIN) { 4637 (void) fprintf(stderr, "ifconfig: %s: bad address " 4638 "(try again later)\n", s); 4639 } else { 4640 (void) fprintf(stderr, "ifconfig: %s: bad address\n", s); 4641 } 4642 exit(1); 4643 } 4644 4645 /* 4646 * If the last argument is non-NULL allow a <addr>/<n> syntax and 4647 * pass out <n> in *plenp. 4648 * If <n> doesn't parse return BAD_ADDR as *plenp. 4649 * If no /<n> is present return NO_PREFIX as *plenp. 4650 */ 4651 static void 4652 in6_getaddr(char *s, struct sockaddr *saddr, int *plenp) 4653 { 4654 /* LINTED: alignment */ 4655 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)saddr; 4656 struct hostent *hp; 4657 char str[BUFSIZ]; 4658 int error_num; 4659 4660 (void) strncpy(str, s, sizeof (str)); 4661 4662 /* 4663 * Look for '/'<n> is plenp 4664 */ 4665 if (plenp != NULL) { 4666 char *cp; 4667 4668 *plenp = in_getprefixlen(str, _B_TRUE, IPV6_ABITS); 4669 if (*plenp == BAD_ADDR) 4670 return; 4671 cp = strchr(str, '/'); 4672 if (cp != NULL) 4673 *cp = '\0'; 4674 } else if (strchr(str, '/') != NULL) { 4675 (void) fprintf(stderr, "ifconfig: %s: unexpected '/'\n", str); 4676 exit(1); 4677 } 4678 4679 (void) memset(sin6, 0, sizeof (*sin6)); 4680 4681 hp = getipnodebyname(str, AF_INET6, 0, &error_num); 4682 if (hp) { 4683 sin6->sin6_family = hp->h_addrtype; 4684 (void) memcpy(&sin6->sin6_addr, hp->h_addr, hp->h_length); 4685 freehostent(hp); 4686 return; 4687 } 4688 if (error_num == TRY_AGAIN) { 4689 (void) fprintf(stderr, "ifconfig: %s: bad address " 4690 "(try again later)\n", s); 4691 } else { 4692 (void) fprintf(stderr, "ifconfig: %s: bad address\n", s); 4693 } 4694 exit(1); 4695 } 4696 4697 /* 4698 * If "slash" is zero this parses the whole string as 4699 * an integer. With "slash" non zero it parses the tail part as an integer. 4700 * 4701 * If it is not a valid integer this returns BAD_ADDR. 4702 * If there is /<n> present this returns NO_PREFIX. 4703 */ 4704 static int 4705 in_getprefixlen(char *addr, boolean_t slash, int max_plen) 4706 { 4707 int prefixlen; 4708 char *str, *end; 4709 4710 if (slash) { 4711 str = strchr(addr, '/'); 4712 if (str == NULL) 4713 return (NO_PREFIX); 4714 str++; 4715 } else 4716 str = addr; 4717 4718 prefixlen = strtol(str, &end, 10); 4719 if (prefixlen < 0) 4720 return (BAD_ADDR); 4721 if (str == end) 4722 return (BAD_ADDR); 4723 if (max_plen != 0 && max_plen < prefixlen) 4724 return (BAD_ADDR); 4725 return (prefixlen); 4726 } 4727 4728 /* 4729 * Convert a prefix length to a mask. 4730 * Returns 1 if ok. 0 otherwise. 4731 * Assumes the mask array is zero'ed by the caller. 4732 */ 4733 static boolean_t 4734 in_prefixlentomask(int prefixlen, int maxlen, uchar_t *mask) 4735 { 4736 if (prefixlen < 0 || prefixlen > maxlen) 4737 return (0); 4738 4739 while (prefixlen > 0) { 4740 if (prefixlen >= 8) { 4741 *mask++ = 0xFF; 4742 prefixlen -= 8; 4743 continue; 4744 } 4745 *mask |= 1 << (8 - prefixlen); 4746 prefixlen--; 4747 } 4748 return (1); 4749 } 4750 4751 static void 4752 print_flags(uint64_t flags) 4753 { 4754 boolean_t first = _B_TRUE; 4755 int cnt, i; 4756 4757 (void) printf("flags=%llx", flags); 4758 cnt = sizeof (if_flags_tbl) / sizeof (if_flags_t); 4759 for (i = 0; i < cnt; i++) { 4760 if (flags & if_flags_tbl[i].iff_value) { 4761 if (first) { 4762 (void) printf("<"); 4763 first = _B_FALSE; 4764 } else { 4765 /* 4766 * It has to be here and not with the 4767 * printf below because for the last one, 4768 * we don't want a comma before the ">". 4769 */ 4770 (void) printf(","); 4771 } 4772 (void) printf("%s", if_flags_tbl[i].iff_name); 4773 } 4774 } 4775 if (!first) 4776 (void) printf(">"); 4777 } 4778 4779 static void 4780 print_config_flags(int af, uint64_t flags) 4781 { 4782 if_config_cmd_t *cmdp; 4783 4784 for (cmdp = if_config_cmd_tbl; cmdp->iff_flag != 0; cmdp++) { 4785 if ((flags & cmdp->iff_flag) && 4786 (cmdp->iff_af == AF_UNSPEC || cmdp->iff_af == af)) { 4787 (void) printf("%s ", cmdp->iff_name); 4788 } 4789 } 4790 } 4791 4792 /* 4793 * Use the configured directory lookup mechanism (e.g. files/NIS/NIS+/...) 4794 * to find the network mask. Returns true if we found one to set. 4795 * 4796 * The parameter addr_set controls whether we should get the address of 4797 * the working interface for the netmask query. If addr_set is true, 4798 * we will use the address provided. Otherwise, we will find the working 4799 * interface's address and use it instead. 4800 */ 4801 static boolean_t 4802 in_getmask(struct sockaddr_in *saddr, boolean_t addr_set) 4803 { 4804 struct sockaddr_in ifaddr; 4805 4806 /* 4807 * Read the address from the interface if it is not passed in. 4808 */ 4809 if (!addr_set) { 4810 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4811 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 4812 if (errno != EADDRNOTAVAIL) { 4813 (void) fprintf(stderr, "Need net number for " 4814 "mask\n"); 4815 } 4816 return (_B_FALSE); 4817 } 4818 ifaddr = *((struct sockaddr_in *)&lifr.lifr_addr); 4819 } else { 4820 ifaddr.sin_addr = saddr->sin_addr; 4821 } 4822 if (getnetmaskbyaddr(ifaddr.sin_addr, &saddr->sin_addr) == 0) { 4823 saddr->sin_family = AF_INET; 4824 return (_B_TRUE); 4825 } 4826 return (_B_FALSE); 4827 } 4828 4829 static int 4830 lifnum(const char *ifname) 4831 { 4832 const char *cp; 4833 4834 if ((cp = strchr(ifname, ':')) == NULL) 4835 return (0); 4836 else 4837 return (atoi(cp + 1)); 4838 } 4839 4840 static int 4841 strioctl(int s, int cmd, void *buf, int buflen) 4842 { 4843 struct strioctl ioc; 4844 4845 (void) memset(&ioc, 0, sizeof (ioc)); 4846 ioc.ic_cmd = cmd; 4847 ioc.ic_timout = 0; 4848 ioc.ic_len = buflen; 4849 ioc.ic_dp = buf; 4850 return (ioctl(s, I_STR, (char *)&ioc)); 4851 } 4852 4853 static void 4854 add_ni(const char *name) 4855 { 4856 ni_t **pp; 4857 ni_t *p; 4858 4859 for (pp = &ni_list; (p = *pp) != NULL; pp = &(p->ni_next)) { 4860 if (strcmp(p->ni_name, name) == 0) { 4861 if (debug > 2) 4862 (void) fprintf(stderr, "'%s' is a duplicate\n", 4863 name); 4864 return; 4865 } 4866 } 4867 4868 if (debug > 2) 4869 (void) fprintf(stderr, "adding '%s'\n", 4870 name); 4871 4872 if ((p = malloc(sizeof (ni_t))) == NULL) 4873 return; 4874 4875 (void) strlcpy(p->ni_name, name, sizeof (p->ni_name)); 4876 p->ni_next = NULL; 4877 4878 *pp = p; 4879 num_ni++; 4880 } 4881 4882 static boolean_t 4883 ni_entry(const char *linkname, void *arg) 4884 { 4885 dlpi_handle_t dh; 4886 datalink_class_t class; 4887 4888 (void) dladm_name2info(arg, linkname, NULL, NULL, &class, NULL); 4889 4890 if (class == DATALINK_CLASS_ETHERSTUB) 4891 return (_B_FALSE); 4892 if (dlpi_open(linkname, &dh, 0) != DLPI_SUCCESS) 4893 return (_B_FALSE); 4894 4895 add_ni(linkname); 4896 4897 dlpi_close(dh); 4898 return (_B_FALSE); 4899 } 4900 4901 /* 4902 * dhcp-related routines 4903 */ 4904 4905 static int 4906 setifdhcp(const char *caller, const char *ifname, int argc, char *argv[]) 4907 { 4908 dhcp_ipc_request_t *request; 4909 dhcp_ipc_reply_t *reply = NULL; 4910 int timeout = DHCP_IPC_WAIT_DEFAULT; 4911 dhcp_ipc_type_t type = DHCP_START; 4912 int error; 4913 boolean_t is_primary = _B_FALSE; 4914 boolean_t started = _B_FALSE; 4915 4916 for (argv++; --argc > 0; argv++) { 4917 4918 if (strcmp(*argv, "primary") == 0) { 4919 is_primary = _B_TRUE; 4920 continue; 4921 } 4922 4923 if (strcmp(*argv, "wait") == 0) { 4924 if (--argc <= 0) { 4925 usage(); 4926 return (DHCP_EXIT_BADARGS); 4927 } 4928 argv++; 4929 4930 if (strcmp(*argv, "forever") == 0) { 4931 timeout = DHCP_IPC_WAIT_FOREVER; 4932 continue; 4933 } 4934 4935 if (sscanf(*argv, "%d", &timeout) != 1) { 4936 usage(); 4937 return (DHCP_EXIT_BADARGS); 4938 } 4939 4940 if (timeout < 0) { 4941 usage(); 4942 return (DHCP_EXIT_BADARGS); 4943 } 4944 continue; 4945 } 4946 4947 type = dhcp_string_to_request(*argv); 4948 if (type == -1) { 4949 usage(); 4950 return (DHCP_EXIT_BADARGS); 4951 } 4952 } 4953 4954 /* 4955 * Only try to start agent on start or inform; in all other cases it 4956 * has to already be running for anything to make sense. 4957 */ 4958 if (type == DHCP_START || type == DHCP_INFORM) { 4959 if (dhcp_start_agent(DHCP_IPC_MAX_WAIT) == -1) { 4960 (void) fprintf(stderr, "%s: unable to start %s\n", 4961 caller, DHCP_AGENT_PATH); 4962 return (DHCP_EXIT_FAILURE); 4963 } 4964 started = _B_TRUE; 4965 } 4966 4967 if (is_primary) 4968 type |= DHCP_PRIMARY; 4969 4970 if (af != AF_INET) 4971 type |= DHCP_V6; 4972 4973 request = dhcp_ipc_alloc_request(type, ifname, NULL, 0, DHCP_TYPE_NONE); 4974 if (request == NULL) { 4975 (void) fprintf(stderr, "%s: out of memory\n", caller); 4976 return (DHCP_EXIT_SYSTEM); 4977 } 4978 4979 error = dhcp_ipc_make_request(request, &reply, timeout); 4980 if (error != 0) { 4981 free(request); 4982 /* 4983 * Re-map connect error to not under control if we didn't try a 4984 * start operation, as this has to be true and results in a 4985 * clearer message, not to mention preserving compatibility 4986 * with the days when we always started dhcpagent for every 4987 * request. 4988 */ 4989 if (error == DHCP_IPC_E_CONNECT && !started) 4990 error = DHCP_IPC_E_UNKIF; 4991 (void) fprintf(stderr, "%s: %s: %s\n", caller, ifname, 4992 dhcp_ipc_strerror(error)); 4993 return (DHCP_EXIT_FAILURE); 4994 } 4995 4996 error = reply->return_code; 4997 if (error != 0) { 4998 free(request); 4999 free(reply); 5000 5001 if (error == DHCP_IPC_E_TIMEOUT && timeout == 0) 5002 return (DHCP_EXIT_SUCCESS); 5003 5004 (void) fprintf(stderr, "%s: %s: %s\n", caller, ifname, 5005 dhcp_ipc_strerror(error)); 5006 5007 if (error == DHCP_IPC_E_TIMEOUT) 5008 return (DHCP_EXIT_TIMEOUT); 5009 else 5010 return (DHCP_EXIT_IF_FAILURE); 5011 } 5012 5013 if (DHCP_IPC_CMD(type) == DHCP_STATUS) { 5014 (void) printf("%s", dhcp_status_hdr_string()); 5015 (void) printf("%s", dhcp_status_reply_to_string(reply)); 5016 } 5017 5018 free(request); 5019 free(reply); 5020 return (DHCP_EXIT_SUCCESS); 5021 } 5022 5023 static void 5024 usage(void) 5025 { 5026 (void) fprintf(stderr, 5027 "usage: ifconfig <interface> | -a[ 4 | 6 | D ][ u | d ][ Z ]\n"); 5028 5029 (void) fprintf(stderr, "%s", 5030 "\t[ <addr_family> ]\n" 5031 "\t[ <address>[/<prefix_length>] [ <dest_address> ] ]\n" 5032 "\t[ set [ <address>][/<prefix_length>] ]" 5033 " [ <address>/<prefix_length>] ]\n" 5034 "\t[ destination <dest_address> ]\n" 5035 "\t[ addif <address>[/<prefix_length>]" 5036 " [ <dest_address> ] ]\n" 5037 "\t[ removeif <address>[/<prefix_length>] ]\n" 5038 "\t[ arp | -arp ]\n" 5039 "\t[ auto-revarp ]\n" 5040 "\t[ broadcast <broad_addr> ]\n" 5041 "\t[ index <if_index> ]\n" 5042 "\t[ metric <n> ] [ mtu <n> ]\n" 5043 "\t[ netmask <mask> ]\n" 5044 "\t[ plumb ] [ unplumb ]\n" 5045 "\t[ preferred | -preferred ]\n" 5046 "\t[ private | -private ]\n" 5047 "\t[ local | -local ]\n" 5048 "\t[ router | -router ]\n" 5049 "\t[ subnet <subnet_address>]\n" 5050 "\t[ trailers | -trailers ]\n" 5051 "\t[ token <address>/<prefix_length> ]\n" 5052 "\t[ tsrc <tunnel_src_address> ]\n" 5053 "\t[ tdst <tunnel_dest_address> ]\n" 5054 "\t[ auth_algs <tunnel_AH_authentication_algorithm> ]\n" 5055 "\t[ encr_algs <tunnel_ESP_encryption_algorithm> ]\n" 5056 "\t[ encr_auth_algs <tunnel_ESP_authentication_algorithm> ]\n" 5057 "\t[ up ] [ down ]\n" 5058 "\t[ xmit | -xmit ]\n" 5059 "\t[ modlist ]\n" 5060 "\t[ modinsert <module_name@position> ]\n" 5061 "\t[ modremove <module_name@position> ]\n" 5062 "\t[ ipmp ]\n" 5063 "\t[ group <groupname>] | [ group \"\"]\n" 5064 "\t[ deprecated | -deprecated ]\n" 5065 "\t[ standby | -standby ]\n" 5066 "\t[ failover | -failover ]\n" 5067 "\t[ zone <zonename> | -zone ]\n" 5068 "\t[ usesrc <interface> ]\n" 5069 "\t[ all-zones ]\n"); 5070 5071 (void) fprintf(stderr, "or\n"); 5072 (void) fprintf(stderr, 5073 "\tifconfig <interface> | -a[ 4 | 6 | D ] [ u | d ]\n"); 5074 5075 (void) fprintf(stderr, "%s", "\tauto-dhcp | dhcp\n" 5076 "\t[ wait <time> | forever ]\n\t[ primary ]\n" 5077 "\tstart | drop | ping | release | status | inform\n"); 5078 } 5079