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 1757 (void) dlpi_walk(ni_entry, NULL, 0); 1758 1759 /* 1760 * Now, translate the linked list into 1761 * a struct lifreq buffer 1762 */ 1763 if (num_ni == 0) { 1764 lifcp->lifc_family = AF_UNSPEC; 1765 lifcp->lifc_flags = lifc_flags; 1766 lifcp->lifc_len = 0; 1767 lifcp->lifc_buf = NULL; 1768 return (0); 1769 } 1770 1771 bufsize = num_ni * sizeof (struct lifreq); 1772 if ((*buf = malloc(bufsize)) == NULL) 1773 Perror0_exit("find_all_interfaces: malloc failed"); 1774 1775 lifcp->lifc_family = AF_UNSPEC; 1776 lifcp->lifc_flags = lifc_flags; 1777 lifcp->lifc_len = bufsize; 1778 lifcp->lifc_buf = *buf; 1779 1780 for (n = 0, lifrp = lifcp->lifc_req; n < num_ni; n++, lifrp++) { 1781 nip = ni_list; 1782 (void) strncpy(lifrp->lifr_name, nip->ni_name, 1783 sizeof (lifr.lifr_name)); 1784 ni_list = nip->ni_next; 1785 free(nip); 1786 } 1787 return (0); 1788 } 1789 1790 /* 1791 * static int find_all_zone_interfaces(struct lifconf *lifcp, char **buf, 1792 * int64_t lifc_flags) 1793 * 1794 * It finds all interfaces for an exclusive-IP zone, that is all the interfaces 1795 * assigned to it. 1796 * 1797 * It takes in input a pointer to struct lifconf to receive interfaces 1798 * informations, a **char to hold allocated buffer, and a lifc_flags. 1799 * 1800 * Return values: 1801 * 0 = everything OK 1802 * -1 = problem 1803 */ 1804 static int 1805 find_all_zone_interfaces(struct lifconf *lifcp, char **buf, int64_t lifc_flags) 1806 { 1807 zoneid_t zoneid; 1808 unsigned bufsize; 1809 char *dlnames, *ptr; 1810 struct lifreq *lifrp; 1811 int num_ni_saved, i; 1812 1813 zoneid = getzoneid(); 1814 1815 num_ni = 0; 1816 if (zone_list_datalink(zoneid, &num_ni, NULL) != 0) 1817 Perror0_exit("find_all_interfaces: list interfaces failed"); 1818 again: 1819 /* this zone doesn't have any data-links */ 1820 if (num_ni == 0) { 1821 lifcp->lifc_family = AF_UNSPEC; 1822 lifcp->lifc_flags = lifc_flags; 1823 lifcp->lifc_len = 0; 1824 lifcp->lifc_buf = NULL; 1825 return (0); 1826 } 1827 1828 dlnames = malloc(num_ni * LIFNAMSIZ); 1829 if (dlnames == NULL) 1830 Perror0_exit("find_all_interfaces: out of memory"); 1831 num_ni_saved = num_ni; 1832 1833 if (zone_list_datalink(zoneid, &num_ni, dlnames) != 0) 1834 Perror0_exit("find_all_interfaces: list interfaces failed"); 1835 1836 if (num_ni_saved < num_ni) { 1837 /* list increased, try again */ 1838 free(dlnames); 1839 goto again; 1840 } 1841 1842 /* this zone doesn't have any data-links now */ 1843 if (num_ni == 0) { 1844 free(dlnames); 1845 lifcp->lifc_family = AF_UNSPEC; 1846 lifcp->lifc_flags = lifc_flags; 1847 lifcp->lifc_len = 0; 1848 lifcp->lifc_buf = NULL; 1849 return (0); 1850 } 1851 1852 bufsize = num_ni * sizeof (struct lifreq); 1853 if ((*buf = malloc(bufsize)) == NULL) { 1854 free(dlnames); 1855 Perror0_exit("find_all_interfaces: malloc failed"); 1856 } 1857 1858 lifrp = (struct lifreq *)*buf; 1859 ptr = dlnames; 1860 for (i = 0; i < num_ni; i++) { 1861 if (strlcpy(lifrp->lifr_name, ptr, LIFNAMSIZ) >= 1862 LIFNAMSIZ) 1863 Perror0_exit("find_all_interfaces: overflow"); 1864 ptr += LIFNAMSIZ; 1865 lifrp++; 1866 } 1867 1868 free(dlnames); 1869 lifcp->lifc_family = AF_UNSPEC; 1870 lifcp->lifc_flags = lifc_flags; 1871 lifcp->lifc_len = bufsize; 1872 lifcp->lifc_buf = *buf; 1873 return (0); 1874 } 1875 1876 /* 1877 * Create the next unused logical interface using the original name 1878 * and assign the address (and mask if '/<n>' is part of the address). 1879 * Use the new logical interface for subsequent subcommands by updating 1880 * the name variable. 1881 * 1882 * This allows syntax like: 1883 * ifconfig le0 addif 109.106.86.130 netmask + up \ 1884 * addif 109.106.86.131 netmask + up 1885 */ 1886 /* ARGSUSED */ 1887 static int 1888 addif(char *str, int64_t param) 1889 { 1890 int prefixlen = 0; 1891 struct sockaddr_storage laddr; 1892 struct sockaddr_storage mask; 1893 1894 (void) strncpy(name, origname, sizeof (name)); 1895 1896 if (strchr(name, ':') != NULL) { 1897 (void) fprintf(stderr, 1898 "ifconfig: addif: bad physical interface name %s\n", 1899 name); 1900 exit(1); 1901 } 1902 1903 /* 1904 * clear so parser will interpret next address as source followed 1905 * by possible dest 1906 */ 1907 setaddr = 0; 1908 (*afp->af_getaddr)(str, (struct sockaddr *)&laddr, &prefixlen); 1909 1910 switch (prefixlen) { 1911 case NO_PREFIX: 1912 /* Nothing there - ok */ 1913 break; 1914 case BAD_ADDR: 1915 (void) fprintf(stderr, 1916 "ifconfig: Bad prefix length in %s\n", str); 1917 exit(1); 1918 default: 1919 (void) memset(&mask, 0, sizeof (mask)); 1920 mask.ss_family = afp->af_af; 1921 if (afp->af_af == AF_INET6) { 1922 struct sockaddr_in6 *sin6; 1923 sin6 = (struct sockaddr_in6 *)&mask; 1924 if (!in_prefixlentomask(prefixlen, IPV6_ABITS, 1925 (uchar_t *)&sin6->sin6_addr)) { 1926 (void) fprintf(stderr, "ifconfig: " 1927 "Bad prefix length: %d\n", 1928 prefixlen); 1929 exit(1); 1930 } 1931 } else { 1932 struct sockaddr_in *sin; 1933 1934 sin = (struct sockaddr_in *)&mask; 1935 if (!in_prefixlentomask(prefixlen, IP_ABITS, 1936 (uchar_t *)&sin->sin_addr)) { 1937 (void) fprintf(stderr, "ifconfig: " 1938 "Bad prefix length: %d\n", 1939 prefixlen); 1940 exit(1); 1941 } 1942 } 1943 g_netmask_set = G_NETMASK_NIL; 1944 break; 1945 } 1946 1947 /* 1948 * This is a "hack" to get around the problem of SIOCLIFADDIF. The 1949 * problem is that this ioctl does not include the netmask when 1950 * adding a logical interface. This is the same problem described 1951 * in the ifconfig() comments. To get around this problem, we first 1952 * add the logical interface with a 0 address. After that, we set 1953 * the netmask if provided. Finally we set the interface address. 1954 */ 1955 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1956 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 1957 1958 /* Note: no need to do DAD here since the interface isn't up yet. */ 1959 1960 if (ioctl(s, SIOCLIFADDIF, (caddr_t)&lifr) < 0) 1961 Perror0_exit("addif: SIOCLIFADDIF"); 1962 1963 (void) printf("Created new logical interface %s\n", 1964 lifr.lifr_name); 1965 (void) strncpy(name, lifr.lifr_name, sizeof (name)); 1966 1967 /* 1968 * Check and see if any "netmask" command is used and perform the 1969 * necessary operation. 1970 */ 1971 set_mask_lifreq(&lifr, &laddr, &mask); 1972 /* 1973 * Only set the netmask if "netmask" command is used or a prefix is 1974 * provided. 1975 */ 1976 if (g_netmask_set == G_NETMASK_SET || prefixlen >= 0) { 1977 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1978 Perror0_exit("addif: SIOCSLIFNETMASK"); 1979 } 1980 1981 /* Finally, we set the interface address. */ 1982 lifr.lifr_addr = laddr; 1983 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) 1984 Perror0_exit("SIOCSLIFADDR"); 1985 1986 /* 1987 * let parser know we got a source. 1988 * Next address, if given, should be dest 1989 */ 1990 setaddr++; 1991 return (0); 1992 } 1993 1994 /* 1995 * Remove a logical interface based on its IP address. Unlike addif 1996 * there is no '/<n>' here. 1997 * Verifies that the interface is down before it is removed. 1998 */ 1999 /* ARGSUSED */ 2000 static int 2001 removeif(char *str, int64_t param) 2002 { 2003 struct sockaddr_storage laddr; 2004 2005 if (strchr(name, ':') != NULL) { 2006 (void) fprintf(stderr, 2007 "ifconfig: removeif: bad physical interface name %s\n", 2008 name); 2009 exit(1); 2010 } 2011 2012 (*afp->af_getaddr)(str, &laddr, NULL); 2013 lifr.lifr_addr = laddr; 2014 2015 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2016 if (ioctl(s, SIOCLIFREMOVEIF, (caddr_t)&lifr) < 0) { 2017 if (errno == EBUSY) { 2018 /* This can only happen if ipif_id = 0 */ 2019 (void) fprintf(stderr, 2020 "ifconfig: removeif: can't remove interface: %s\n", 2021 name); 2022 exit(1); 2023 } 2024 Perror0_exit("removeif: SIOCLIFREMOVEIF"); 2025 } 2026 return (0); 2027 } 2028 2029 /* 2030 * Set the address token for IPv6. 2031 */ 2032 /* ARGSUSED */ 2033 static int 2034 setiftoken(char *addr, int64_t param) 2035 { 2036 int prefixlen = 0; 2037 struct sockaddr_in6 token; 2038 2039 in6_getaddr(addr, (struct sockaddr *)&token, &prefixlen); 2040 switch (prefixlen) { 2041 case NO_PREFIX: 2042 (void) fprintf(stderr, 2043 "ifconfig: Missing prefix length in subnet %s\n", addr); 2044 exit(1); 2045 /* NOTREACHED */ 2046 case BAD_ADDR: 2047 (void) fprintf(stderr, 2048 "ifconfig: Bad prefix length in %s\n", addr); 2049 exit(1); 2050 default: 2051 break; 2052 } 2053 (void) memcpy(&lifr.lifr_addr, &token, sizeof (token)); 2054 lifr.lifr_addrlen = prefixlen; 2055 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2056 if (ioctl(s, SIOCSLIFTOKEN, (caddr_t)&lifr) < 0) { 2057 Perror0_exit("setiftoken: SIOCSLIFTOKEN"); 2058 } 2059 return (0); 2060 } 2061 2062 /* ARGSUSED */ 2063 static int 2064 setifgroupname(char *grname, int64_t param) 2065 { 2066 lifgroupinfo_t lifgr; 2067 struct lifreq lifrl; 2068 ifaddrlistx_t *ifaddrp, *nextifaddrp; 2069 ifaddrlistx_t *ifaddrs = NULL, *downaddrs = NULL; 2070 int af; 2071 2072 if (debug) { 2073 (void) printf("Setting groupname %s on interface %s\n", 2074 grname, name); 2075 } 2076 2077 (void) strlcpy(lifrl.lifr_name, name, LIFNAMSIZ); 2078 (void) strlcpy(lifrl.lifr_groupname, grname, LIFGRNAMSIZ); 2079 2080 while (ioctl(s, SIOCSLIFGROUPNAME, &lifrl) == -1) { 2081 switch (errno) { 2082 case ENOENT: 2083 /* 2084 * The group doesn't yet exist; create it and repeat. 2085 */ 2086 af = afp->af_af; 2087 if (create_ipmp(grname, af, NULL, _B_TRUE) == -1) { 2088 if (errno == EEXIST) 2089 continue; 2090 2091 Perror2(grname, "cannot create IPMP group"); 2092 goto fail; 2093 } 2094 continue; 2095 2096 case EALREADY: 2097 /* 2098 * The interface is already in another group; must 2099 * remove existing membership first. 2100 */ 2101 lifrl.lifr_groupname[0] = '\0'; 2102 if (ioctl(s, SIOCSLIFGROUPNAME, &lifrl) == -1) { 2103 Perror2(name, "cannot remove existing " 2104 "IPMP group membership"); 2105 goto fail; 2106 } 2107 (void) strlcpy(lifrl.lifr_groupname, grname, 2108 LIFGRNAMSIZ); 2109 continue; 2110 2111 case EAFNOSUPPORT: 2112 /* 2113 * The group exists, but it's not configured with the 2114 * address families the interface needs. Since only 2115 * two address families are currently supported, just 2116 * configure the "other" address family. Note that we 2117 * may race with group deletion or creation by another 2118 * process (ENOENT or EEXIST); in such cases we repeat 2119 * our original SIOCSLIFGROUPNAME. 2120 */ 2121 (void) strlcpy(lifgr.gi_grname, grname, LIFGRNAMSIZ); 2122 if (ioctl(s, SIOCGLIFGROUPINFO, &lifgr) == -1) { 2123 if (errno == ENOENT) 2124 continue; 2125 2126 Perror2(grname, "SIOCGLIFGROUPINFO"); 2127 goto fail; 2128 } 2129 2130 af = lifgr.gi_v4 ? AF_INET6 : AF_INET; 2131 if (create_ipmp(grname, af, lifgr.gi_grifname, 2132 _B_TRUE) == -1) { 2133 if (errno == EEXIST) 2134 continue; 2135 2136 Perror2(grname, "cannot configure IPMP group"); 2137 goto fail; 2138 } 2139 continue; 2140 2141 case EADDRINUSE: 2142 /* 2143 * Some addresses are in-use (or under control of DAD). 2144 * Bring them down and retry the group join operation. 2145 * We will bring them back up after the interface has 2146 * been placed in the group. 2147 */ 2148 if (ifaddrlistx(lifrl.lifr_name, IFF_UP|IFF_DUPLICATE, 2149 0, &ifaddrs) == -1) { 2150 Perror2(grname, "cannot get address list"); 2151 goto fail; 2152 } 2153 2154 ifaddrp = ifaddrs; 2155 for (; ifaddrp != NULL; ifaddrp = nextifaddrp) { 2156 if (!ifaddr_down(ifaddrp)) { 2157 ifaddrs = ifaddrp; 2158 goto fail; 2159 } 2160 nextifaddrp = ifaddrp->ia_next; 2161 ifaddrp->ia_next = downaddrs; 2162 downaddrs = ifaddrp; 2163 } 2164 ifaddrs = NULL; 2165 continue; 2166 2167 case EADDRNOTAVAIL: { 2168 /* 2169 * Some data addresses are under application control. 2170 * For some of these (e.g., ADDRCONF), the application 2171 * should remove the address, in which case we retry a 2172 * few times (since the application's action is not 2173 * atomic with respect to us) before bailing out and 2174 * informing the user. 2175 */ 2176 int ntries, nappaddr = 0; 2177 const if_appflags_t *iap = if_appflags_tbl; 2178 2179 for (; iap->ia_app != NULL; iap++) { 2180 ntries = 0; 2181 again: 2182 if (ifaddrlistx(lifrl.lifr_name, iap->ia_flag, 2183 IFF_NOFAILOVER, &ifaddrs) == -1) { 2184 (void) fprintf(stderr, "ifconfig: %s: " 2185 "cannot get data addresses managed " 2186 "by %s\n", lifrl.lifr_name, 2187 iap->ia_app); 2188 goto fail; 2189 } 2190 2191 if (ifaddrs == NULL) 2192 continue; 2193 2194 ifaddrlistx_free(ifaddrs); 2195 ifaddrs = NULL; 2196 2197 if (++ntries < iap->ia_tries) { 2198 (void) poll(NULL, 0, 100); 2199 goto again; 2200 } 2201 2202 (void) fprintf(stderr, "ifconfig: cannot join " 2203 "IPMP group: %s has data addresses managed " 2204 "by %s\n", lifrl.lifr_name, iap->ia_app); 2205 nappaddr++; 2206 } 2207 if (nappaddr > 0) 2208 goto fail; 2209 continue; 2210 } 2211 default: 2212 Perror2(name, "SIOCSLIFGROUPNAME"); 2213 goto fail; 2214 } 2215 } 2216 2217 /* 2218 * If there were addresses that we had to bring down, it's time to 2219 * bring them up again. As part of bringing them up, the kernel will 2220 * automatically move them to the new IPMP interface. 2221 */ 2222 for (ifaddrp = downaddrs; ifaddrp != NULL; ifaddrp = ifaddrp->ia_next) { 2223 if (!ifaddr_up(ifaddrp) && errno != ENXIO) { 2224 (void) fprintf(stderr, "ifconfig: cannot bring back up " 2225 "%s: %s\n", ifaddrp->ia_name, strerror(errno)); 2226 } 2227 } 2228 ifaddrlistx_free(downaddrs); 2229 return (0); 2230 fail: 2231 /* 2232 * Attempt to bring back up any interfaces that we downed. 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 ifaddrlistx_free(ifaddrs); 2242 2243 /* 2244 * We'd return -1, but foreachinterface() doesn't propagate the error 2245 * into the exit status, so we're forced to explicitly exit(). 2246 */ 2247 exit(1); 2248 /* NOTREACHED */ 2249 } 2250 2251 static boolean_t 2252 modcheck(const char *ifname) 2253 { 2254 (void) strlcpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); 2255 2256 if (ioctl(s, SIOCGLIFFLAGS, &lifr) < 0) { 2257 Perror0("SIOCGLIFFLAGS"); 2258 return (_B_FALSE); 2259 } 2260 2261 if (lifr.lifr_flags & IFF_IPMP) { 2262 (void) fprintf(stderr, "ifconfig: %s: module operations not" 2263 " supported on IPMP interfaces\n", ifname); 2264 return (_B_FALSE); 2265 } 2266 if (lifr.lifr_flags & IFF_VIRTUAL) { 2267 (void) fprintf(stderr, "ifconfig: %s: module operations not" 2268 " supported on virtual IP interfaces\n", ifname); 2269 return (_B_FALSE); 2270 } 2271 return (_B_TRUE); 2272 } 2273 2274 /* 2275 * To list all the modules above a given network interface. 2276 */ 2277 /* ARGSUSED */ 2278 static int 2279 modlist(char *null, int64_t param) 2280 { 2281 int muxid_fd; 2282 int muxfd; 2283 int ipfd_lowstr; 2284 int arpfd_lowstr; 2285 int num_mods; 2286 int i; 2287 struct str_list strlist; 2288 int orig_arpid; 2289 2290 /* 2291 * We'd return -1, but foreachinterface() doesn't propagate the error 2292 * into the exit status, so we're forced to explicitly exit(). 2293 */ 2294 if (!modcheck(name)) 2295 exit(1); 2296 2297 if (ip_domux2fd(&muxfd, &muxid_fd, &ipfd_lowstr, &arpfd_lowstr, 2298 &orig_arpid) < 0) { 2299 return (-1); 2300 } 2301 if ((num_mods = ioctl(ipfd_lowstr, I_LIST, NULL)) < 0) { 2302 Perror0("cannot I_LIST to get the number of modules"); 2303 } else { 2304 if (debug > 0) { 2305 (void) printf("Listing (%d) modules above %s\n", 2306 num_mods, name); 2307 } 2308 2309 strlist.sl_nmods = num_mods; 2310 strlist.sl_modlist = malloc(sizeof (struct str_mlist) * 2311 num_mods); 2312 if (strlist.sl_modlist == NULL) { 2313 Perror0("cannot malloc"); 2314 } else { 2315 if (ioctl(ipfd_lowstr, I_LIST, (caddr_t)&strlist) < 0) { 2316 Perror0("cannot I_LIST for module names"); 2317 } else { 2318 for (i = 0; i < strlist.sl_nmods; i++) { 2319 (void) printf("%d %s\n", i, 2320 strlist.sl_modlist[i].l_name); 2321 } 2322 } 2323 free(strlist.sl_modlist); 2324 } 2325 } 2326 return (ip_plink(muxfd, muxid_fd, ipfd_lowstr, arpfd_lowstr, 2327 orig_arpid)); 2328 } 2329 2330 #define MODINSERT_OP 'i' 2331 #define MODREMOVE_OP 'r' 2332 2333 /* 2334 * To insert a module to the stream of the interface. It is just a 2335 * wrapper. The real function is modop(). 2336 */ 2337 /* ARGSUSED */ 2338 static int 2339 modinsert(char *arg, int64_t param) 2340 { 2341 return (modop(arg, MODINSERT_OP)); 2342 } 2343 2344 /* 2345 * To remove a module from the stream of the interface. It is just a 2346 * wrapper. The real function is modop(). 2347 */ 2348 /* ARGSUSED */ 2349 static int 2350 modremove(char *arg, int64_t param) 2351 { 2352 return (modop(arg, MODREMOVE_OP)); 2353 } 2354 2355 /* 2356 * Open a stream on /dev/udp{,6}, pop off all undesired modules (note that 2357 * the user may have configured autopush to add modules above 2358 * udp), and push the arp module onto the resulting stream. 2359 * This is used to make IP+ARP be able to atomically track the muxid 2360 * for the I_PLINKed STREAMS, thus it isn't related to ARP running the ARP 2361 * protocol. 2362 */ 2363 static int 2364 open_arp_on_udp(char *udp_dev_name) 2365 { 2366 int fd; 2367 2368 if ((fd = open(udp_dev_name, O_RDWR)) == -1) { 2369 Perror2("open", udp_dev_name); 2370 return (-1); 2371 } 2372 errno = 0; 2373 while (ioctl(fd, I_POP, 0) != -1) 2374 ; 2375 if (errno != EINVAL) { 2376 Perror2("pop", udp_dev_name); 2377 } else if (ioctl(fd, I_PUSH, ARP_MOD_NAME) == -1) { 2378 Perror2("arp PUSH", udp_dev_name); 2379 } else { 2380 return (fd); 2381 } 2382 (void) close(fd); 2383 return (-1); 2384 } 2385 2386 /* 2387 * Helper function for mod*() functions. It gets a fd to the lower IP 2388 * stream and I_PUNLINK's the lower stream. It also initializes the 2389 * global variable lifr. 2390 * 2391 * Param: 2392 * int *muxfd: fd to /dev/udp{,6} for I_PLINK/I_PUNLINK 2393 * int *muxid_fd: fd to /dev/udp{,6} for LIFMUXID 2394 * int *ipfd_lowstr: fd to the lower IP stream. 2395 * int *arpfd_lowstr: fd to the lower ARP stream. 2396 * 2397 * Return: 2398 * -1 if operation fails, 0 otherwise. 2399 * 2400 * Please see the big block comment above ifplumb() for the logic of the 2401 * PLINK/PUNLINK 2402 */ 2403 static int 2404 ip_domux2fd(int *muxfd, int *muxid_fd, int *ipfd_lowstr, int *arpfd_lowstr, 2405 int *orig_arpid) 2406 { 2407 uint64_t flags; 2408 char *udp_dev_name; 2409 2410 *orig_arpid = 0; 2411 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2412 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 2413 Perror0_exit("status: SIOCGLIFFLAGS"); 2414 } 2415 flags = lifr.lifr_flags; 2416 if (flags & IFF_IPV4) { 2417 udp_dev_name = UDP_DEV_NAME; 2418 } else if (flags & IFF_IPV6) { 2419 udp_dev_name = UDP6_DEV_NAME; 2420 } else { 2421 return (-1); 2422 } 2423 2424 if ((*muxid_fd = open(udp_dev_name, O_RDWR)) < 0) { 2425 Perror2("open", udp_dev_name); 2426 return (-1); 2427 } 2428 if (ioctl(*muxid_fd, SIOCGLIFMUXID, (caddr_t)&lifr) < 0) { 2429 Perror2("SIOCGLIFMUXID", udp_dev_name); 2430 return (-1); 2431 } 2432 if (debug > 0) { 2433 (void) printf("ARP_muxid %d IP_muxid %d\n", 2434 lifr.lifr_arp_muxid, lifr.lifr_ip_muxid); 2435 } 2436 2437 /* 2438 * Use /dev/udp{,6} as the mux to avoid linkcycles. 2439 */ 2440 if ((*muxfd = open_arp_on_udp(udp_dev_name)) == -1) 2441 return (-1); 2442 2443 if (lifr.lifr_arp_muxid != 0) { 2444 if ((*arpfd_lowstr = ioctl(*muxfd, _I_MUXID2FD, 2445 lifr.lifr_arp_muxid)) < 0) { 2446 if ((errno == EINVAL) && 2447 (flags & (IFF_NOARP | IFF_IPV6))) { 2448 /* 2449 * Some plumbing utilities set the muxid to 2450 * -1 or some invalid value to signify that 2451 * there is no arp stream. Set the muxid to 0 2452 * before trying to unplumb the IP stream. 2453 * IP does not allow the IP stream to be 2454 * unplumbed if it sees a non-null arp muxid, 2455 * for consistency of IP-ARP streams. 2456 */ 2457 *orig_arpid = lifr.lifr_arp_muxid; 2458 lifr.lifr_arp_muxid = 0; 2459 (void) ioctl(*muxid_fd, SIOCSLIFMUXID, 2460 (caddr_t)&lifr); 2461 *arpfd_lowstr = -1; 2462 } else { 2463 Perror0("_I_MUXID2FD"); 2464 return (-1); 2465 } 2466 } else if (ioctl(*muxfd, I_PUNLINK, 2467 lifr.lifr_arp_muxid) < 0) { 2468 Perror2("I_PUNLINK", udp_dev_name); 2469 return (-1); 2470 } 2471 } else { 2472 *arpfd_lowstr = -1; 2473 } 2474 2475 if ((*ipfd_lowstr = ioctl(*muxfd, _I_MUXID2FD, 2476 lifr.lifr_ip_muxid)) < 0) { 2477 Perror0("_I_MUXID2FD"); 2478 /* Undo any changes we made */ 2479 if (*orig_arpid != 0) { 2480 lifr.lifr_arp_muxid = *orig_arpid; 2481 (void) ioctl(*muxid_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 2482 } 2483 return (-1); 2484 } 2485 if (ioctl(*muxfd, I_PUNLINK, lifr.lifr_ip_muxid) < 0) { 2486 Perror2("I_PUNLINK", udp_dev_name); 2487 /* Undo any changes we made */ 2488 if (*orig_arpid != 0) { 2489 lifr.lifr_arp_muxid = *orig_arpid; 2490 (void) ioctl(*muxid_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 2491 } 2492 return (-1); 2493 } 2494 return (0); 2495 } 2496 2497 /* 2498 * Helper function for mod*() functions. It I_PLINK's back the upper and 2499 * lower IP streams. Note that this function must be called after 2500 * ip_domux2fd(). In ip_domux2fd(), the global variable lifr is initialized 2501 * and ip_plink() needs information in lifr. So ip_domux2fd() and ip_plink() 2502 * must be called in pairs. 2503 * 2504 * Param: 2505 * int muxfd: fd to /dev/udp{,6} for I_PLINK/I_PUNLINK 2506 * int muxid_fd: fd to /dev/udp{,6} for LIFMUXID 2507 * int ipfd_lowstr: fd to the lower IP stream. 2508 * int arpfd_lowstr: fd to the lower ARP stream. 2509 * 2510 * Return: 2511 * -1 if operation fails, 0 otherwise. 2512 * 2513 * Please see the big block comment above ifplumb() for the logic of the 2514 * PLINK/PUNLINK 2515 */ 2516 static int 2517 ip_plink(int muxfd, int muxid_fd, int ipfd_lowstr, int arpfd_lowstr, 2518 int orig_arpid) 2519 { 2520 int ip_muxid; 2521 2522 ip_muxid = ioctl(muxfd, I_PLINK, ipfd_lowstr); 2523 if (ip_muxid < 0) { 2524 Perror2("I_PLINK", UDP_DEV_NAME); 2525 return (-1); 2526 } 2527 2528 /* 2529 * If there is an arp stream, plink it. If there is no 2530 * arp stream, then it is possible that the plumbing 2531 * utility could have stored any value in the arp_muxid. 2532 * If so, restore it from orig_arpid. 2533 */ 2534 if (arpfd_lowstr != -1) { 2535 if (ioctl(muxfd, I_PLINK, arpfd_lowstr) < 0) { 2536 Perror2("I_PLINK", UDP_DEV_NAME); 2537 return (-1); 2538 } 2539 } else if (orig_arpid != 0) { 2540 /* Undo the changes we did in ip_domux2fd */ 2541 lifr.lifr_arp_muxid = orig_arpid; 2542 lifr.lifr_ip_muxid = ip_muxid; 2543 (void) ioctl(muxid_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 2544 } 2545 2546 (void) close(muxfd); 2547 (void) close(muxid_fd); 2548 return (0); 2549 } 2550 2551 /* 2552 * The real function to perform module insertion/removal. 2553 * 2554 * Param: 2555 * char *arg: the argument string module_name@position 2556 * char op: operation, either MODINSERT_OP or MODREMOVE_OP. 2557 * 2558 * Return: 2559 * Before doing ip_domux2fd(), this function calls exit(1) in case of 2560 * error. After ip_domux2fd() is done, it returns -1 for error, 0 2561 * otherwise. 2562 */ 2563 static int 2564 modop(char *arg, char op) 2565 { 2566 char *pos_p; 2567 int muxfd; 2568 int muxid_fd; 2569 int ipfd_lowstr; /* IP stream (lower stream of mux) to be plinked */ 2570 int arpfd_lowstr; /* ARP stream (lower stream of mux) to be plinked */ 2571 struct strmodconf mod; 2572 char *at_char = "@"; 2573 char *arg_str; 2574 int orig_arpid; 2575 2576 /* 2577 * We'd return -1, but foreachinterface() doesn't propagate the error 2578 * into the exit status, so we're forced to explicitly exit(). 2579 */ 2580 if (!modcheck(name)) 2581 exit(1); 2582 2583 /* Need to save the original string for -a option. */ 2584 if ((arg_str = malloc(strlen(arg) + 1)) == NULL) { 2585 Perror0("cannot malloc"); 2586 return (-1); 2587 } 2588 (void) strcpy(arg_str, arg); 2589 2590 if (*arg_str == *at_char) { 2591 (void) fprintf(stderr, 2592 "ifconfig: must supply a module name\n"); 2593 exit(1); 2594 } 2595 mod.mod_name = strtok(arg_str, at_char); 2596 if (strlen(mod.mod_name) > FMNAMESZ) { 2597 (void) fprintf(stderr, "ifconfig: module name too long: %s\n", 2598 mod.mod_name); 2599 exit(1); 2600 } 2601 2602 /* 2603 * Need to make sure that the core TCP/IP stack modules are not 2604 * removed. Otherwise, "bad" things can happen. If a module 2605 * is removed and inserted back, it loses its old state. But 2606 * the modules above it still have the old state. E.g. IP assumes 2607 * fast data path while tunnel after re-inserted assumes that it can 2608 * receive M_DATA only in fast data path for which it does not have 2609 * any state. This is a general caveat of _I_REMOVE/_I_INSERT. 2610 */ 2611 if (op == MODREMOVE_OP && 2612 (strcmp(mod.mod_name, ARP_MOD_NAME) == 0 || 2613 strcmp(mod.mod_name, IP_MOD_NAME) == 0 || 2614 strcmp(mod.mod_name, TUN_NAME) == 0 || 2615 strcmp(mod.mod_name, ATUN_NAME) == 0 || 2616 strcmp(mod.mod_name, TUN6TO4_NAME) == 0)) { 2617 (void) fprintf(stderr, "ifconfig: cannot remove %s\n", 2618 mod.mod_name); 2619 exit(1); 2620 } 2621 2622 if ((pos_p = strtok(NULL, at_char)) == NULL) { 2623 (void) fprintf(stderr, "ifconfig: must supply a position\n"); 2624 exit(1); 2625 } 2626 mod.pos = atoi(pos_p); 2627 2628 if (ip_domux2fd(&muxfd, &muxid_fd, &ipfd_lowstr, &arpfd_lowstr, 2629 &orig_arpid) < 0) { 2630 free(arg_str); 2631 return (-1); 2632 } 2633 switch (op) { 2634 case MODINSERT_OP: 2635 if (debug > 0) { 2636 (void) printf("Inserting module %s at %d\n", 2637 mod.mod_name, mod.pos); 2638 } 2639 if (ioctl(ipfd_lowstr, _I_INSERT, (caddr_t)&mod) < 0) { 2640 Perror2("fail to insert module", mod.mod_name); 2641 } 2642 break; 2643 case MODREMOVE_OP: 2644 if (debug > 0) { 2645 (void) printf("Removing module %s at %d\n", 2646 mod.mod_name, mod.pos); 2647 } 2648 if (ioctl(ipfd_lowstr, _I_REMOVE, (caddr_t)&mod) < 0) { 2649 Perror2("fail to remove module", mod.mod_name); 2650 } 2651 break; 2652 default: 2653 /* Should never get to here. */ 2654 (void) fprintf(stderr, "Unknown operation\n"); 2655 break; 2656 } 2657 free(arg_str); 2658 return (ip_plink(muxfd, muxid_fd, ipfd_lowstr, arpfd_lowstr, 2659 orig_arpid)); 2660 } 2661 2662 /* 2663 * Set tunnel source address 2664 */ 2665 /* ARGSUSED */ 2666 static int 2667 setiftsrc(char *addr, int64_t param) 2668 { 2669 return (settaddr(addr, icfg_set_tunnel_src)); 2670 } 2671 2672 /* 2673 * Set tunnel destination address 2674 */ 2675 /* ARGSUSED */ 2676 static int 2677 setiftdst(char *addr, int64_t param) 2678 { 2679 return (settaddr(addr, icfg_set_tunnel_dest)); 2680 } 2681 2682 /* 2683 * sets tunnels src|dst address. settaddr() expects the following: 2684 * addr: Points to a printable string containing the address to be 2685 * set, e.g. 129.153.128.110. 2686 * fn: Pointer to a libinetcfg routine that will do the actual work. 2687 * The only valid functions are icfg_set_tunnel_src and 2688 * icfg_set_tunnel_dest. 2689 */ 2690 static int 2691 settaddr(char *addr, 2692 int (*fn)(icfg_handle_t, const struct sockaddr *, socklen_t)) 2693 { 2694 icfg_handle_t handle; 2695 icfg_if_t interface; 2696 struct sockaddr_storage laddr; 2697 int lower; 2698 int rc; 2699 2700 if (strchr(name, ':') != NULL) { 2701 errno = EPERM; 2702 Perror0_exit("Tunnel params on logical interfaces"); 2703 } 2704 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2705 interface.if_protocol = SOCKET_AF(af); 2706 2707 /* Open interface. */ 2708 if ((rc = icfg_open(&handle, &interface)) != ICFG_SUCCESS) 2709 Perror0_exit((char *)icfg_errmsg(rc)); 2710 2711 rc = icfg_get_tunnel_lower(handle, &lower); 2712 if (rc != ICFG_SUCCESS) 2713 Perror0_exit((char *)icfg_errmsg(rc)); 2714 2715 if (lower == AF_INET) { 2716 in_getaddr(addr, (struct sockaddr *)&laddr, NULL); 2717 } else { 2718 in6_getaddr(addr, (struct sockaddr *)&laddr, NULL); 2719 } 2720 2721 /* Call fn to do the real work, and close the interface. */ 2722 rc = (*fn)(handle, (struct sockaddr *)&laddr, 2723 sizeof (struct sockaddr_storage)); 2724 icfg_close(handle); 2725 2726 if (rc != ICFG_SUCCESS) 2727 Perror0_exit((char *)icfg_errmsg(rc)); 2728 2729 return (0); 2730 } 2731 2732 /* Set tunnel encapsulation limit. */ 2733 /* ARGSUSED */ 2734 static int 2735 set_tun_encap_limit(char *arg, int64_t param) 2736 { 2737 short limit; 2738 icfg_if_t interface; 2739 icfg_handle_t handle; 2740 int rc; 2741 2742 if (strchr(name, ':') != NULL) { 2743 errno = EPERM; 2744 Perror0_exit("Tunnel params on logical interfaces"); 2745 } 2746 2747 if ((sscanf(arg, "%hd", &limit) != 1) || (limit < 0) || 2748 (limit > 255)) { 2749 errno = EINVAL; 2750 Perror0_exit("Invalid encapsulation limit"); 2751 } 2752 2753 /* Open interface for configuration. */ 2754 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2755 interface.if_protocol = SOCKET_AF(af); 2756 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2757 Perror0_exit("couldn't open interface"); 2758 2759 rc = icfg_set_tunnel_encaplimit(handle, (int)limit); 2760 icfg_close(handle); 2761 2762 if (rc != ICFG_SUCCESS) 2763 Perror0_exit("Could not configure tunnel encapsulation limit"); 2764 2765 return (0); 2766 } 2767 2768 /* Disable encapsulation limit. */ 2769 /* ARGSUSED */ 2770 static int 2771 clr_tun_encap_limit(char *arg, int64_t param) 2772 { 2773 icfg_if_t interface; 2774 icfg_handle_t handle; 2775 int rc; 2776 2777 if (strchr(name, ':') != NULL) { 2778 errno = EPERM; 2779 Perror0_exit("Tunnel params on logical interfaces"); 2780 } 2781 2782 /* Open interface for configuration. */ 2783 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2784 interface.if_protocol = SOCKET_AF(af); 2785 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2786 Perror0_exit("couldn't open interface"); 2787 2788 rc = icfg_set_tunnel_encaplimit(handle, -1); 2789 icfg_close(handle); 2790 2791 if (rc != ICFG_SUCCESS) 2792 Perror0_exit((char *)icfg_errmsg(rc)); 2793 2794 return (0); 2795 } 2796 2797 /* Set tunnel hop limit. */ 2798 /* ARGSUSED */ 2799 static int 2800 set_tun_hop_limit(char *arg, int64_t param) 2801 { 2802 unsigned short limit; 2803 icfg_if_t interface; 2804 icfg_handle_t handle; 2805 int rc; 2806 2807 if (strchr(name, ':') != NULL) { 2808 errno = EPERM; 2809 Perror0_exit("Tunnel params on logical interfaces"); 2810 } 2811 2812 /* 2813 * Check limit here since it's really only an 8-bit unsigned quantity. 2814 */ 2815 if ((sscanf(arg, "%hu", &limit) != 1) || (limit > 255)) { 2816 errno = EINVAL; 2817 Perror0_exit("Invalid hop limit"); 2818 } 2819 2820 /* Open interface for configuration. */ 2821 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2822 interface.if_protocol = SOCKET_AF(af); 2823 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2824 Perror0_exit("couldn't open interface"); 2825 2826 rc = icfg_set_tunnel_hoplimit(handle, (uint8_t)limit); 2827 icfg_close(handle); 2828 2829 if (rc != ICFG_SUCCESS) 2830 Perror0_exit("Could not configure tunnel hop limit"); 2831 2832 return (0); 2833 } 2834 2835 /* Set zone ID */ 2836 static int 2837 setzone(char *arg, int64_t param) 2838 { 2839 zoneid_t zoneid = GLOBAL_ZONEID; 2840 2841 if (param == NEXTARG) { 2842 /* zone must be active */ 2843 if ((zoneid = getzoneidbyname(arg)) == -1) { 2844 (void) fprintf(stderr, 2845 "ifconfig: unknown zone '%s'\n", arg); 2846 exit(1); 2847 } 2848 } 2849 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2850 lifr.lifr_zoneid = zoneid; 2851 if (ioctl(s, SIOCSLIFZONE, (caddr_t)&lifr) == -1) 2852 Perror0_exit("SIOCSLIFZONE"); 2853 return (0); 2854 } 2855 2856 /* Put interface into all zones */ 2857 /* ARGSUSED */ 2858 static int 2859 setallzones(char *arg, int64_t param) 2860 { 2861 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2862 lifr.lifr_zoneid = ALL_ZONES; 2863 if (ioctl(s, SIOCSLIFZONE, (caddr_t)&lifr) == -1) 2864 Perror0_exit("SIOCSLIFZONE"); 2865 return (0); 2866 } 2867 2868 /* Set source address to use */ 2869 /* ARGSUSED */ 2870 static int 2871 setifsrc(char *arg, int64_t param) 2872 { 2873 uint_t ifindex = 0; 2874 int rval; 2875 2876 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2877 2878 /* 2879 * Argument can be either an interface name or "none". The latter means 2880 * that any previous selection is cleared. 2881 */ 2882 2883 rval = strcmp(arg, name); 2884 if (rval == 0) { 2885 (void) fprintf(stderr, 2886 "ifconfig: Cannot specify same interface for usesrc" 2887 " group\n"); 2888 exit(1); 2889 } 2890 2891 rval = strcmp(arg, NONE_STR); 2892 if (rval != 0) { 2893 if ((ifindex = if_nametoindex(arg)) == 0) { 2894 (void) strncpy(lifr.lifr_name, arg, LIFNAMSIZ); 2895 Perror0_exit("Could not get interface index"); 2896 } 2897 lifr.lifr_index = ifindex; 2898 } else { 2899 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) != 0) 2900 Perror0_exit("Not a valid usesrc consumer"); 2901 lifr.lifr_index = 0; 2902 } 2903 2904 if (debug) 2905 (void) printf("setifsrc: lifr_name %s, lifr_index %d\n", 2906 lifr.lifr_name, lifr.lifr_index); 2907 2908 if (ioctl(s, SIOCSLIFUSESRC, (caddr_t)&lifr) == -1) { 2909 if (rval == 0) 2910 Perror0_exit("Cannot reset usesrc group"); 2911 else 2912 Perror0_exit("Could not set source interface"); 2913 } 2914 2915 return (0); 2916 } 2917 2918 /* 2919 * Print the interface status line associated with `ifname' 2920 */ 2921 static void 2922 ifstatus(const char *ifname) 2923 { 2924 uint64_t flags; 2925 char if_usesrc_name[LIFNAMSIZ]; 2926 char *newbuf; 2927 int n, numifs, rval = 0; 2928 struct lifreq *lifrp; 2929 struct lifsrcof lifs; 2930 2931 (void) strncpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); 2932 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 2933 Perror0_exit("status: SIOCGLIFFLAGS"); 2934 } 2935 flags = lifr.lifr_flags; 2936 2937 /* 2938 * In V4 compatibility mode, we don't print the IFF_IPV4 flag or 2939 * interfaces with IFF_IPV6 set. 2940 */ 2941 if (v4compat) { 2942 flags &= ~IFF_IPV4; 2943 if (flags & IFF_IPV6) 2944 return; 2945 } 2946 2947 (void) printf("%s: ", ifname); 2948 print_flags(flags); 2949 2950 (void) strncpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); 2951 if (ioctl(s, SIOCGLIFMETRIC, (caddr_t)&lifr) < 0) { 2952 Perror0_exit("status: SIOCGLIFMETRIC"); 2953 } else { 2954 if (lifr.lifr_metric) 2955 (void) printf(" metric %d", lifr.lifr_metric); 2956 } 2957 if (ioctl(s, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) 2958 (void) printf(" mtu %u", lifr.lifr_mtu); 2959 2960 /* don't print index or zone when in compatibility mode */ 2961 if (!v4compat) { 2962 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) 2963 (void) printf(" index %d", lifr.lifr_index); 2964 /* 2965 * Stack instances use GLOBAL_ZONEID for IP data structures 2966 * even in the non-global zone. 2967 */ 2968 if (ioctl(s, SIOCGLIFZONE, (caddr_t)&lifr) >= 0 && 2969 lifr.lifr_zoneid != getzoneid() && 2970 lifr.lifr_zoneid != GLOBAL_ZONEID) { 2971 char zone_name[ZONENAME_MAX]; 2972 2973 if (lifr.lifr_zoneid == ALL_ZONES) { 2974 (void) printf("\n\tall-zones"); 2975 } else if (getzonenamebyid(lifr.lifr_zoneid, zone_name, 2976 sizeof (zone_name)) < 0) { 2977 (void) printf("\n\tzone %d", lifr.lifr_zoneid); 2978 } else { 2979 (void) printf("\n\tzone %s", zone_name); 2980 } 2981 } 2982 } 2983 2984 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) { 2985 lifs.lifs_ifindex = lifr.lifr_index; 2986 2987 /* 2988 * Find the number of interfaces that use this interfaces' 2989 * address as a source address 2990 */ 2991 lifs.lifs_buf = NULL; 2992 lifs.lifs_maxlen = 0; 2993 for (;;) { 2994 /* The first pass will give the bufsize we need */ 2995 rval = ioctl(s, SIOCGLIFSRCOF, (char *)&lifs); 2996 if (rval < 0) { 2997 if (lifs.lifs_buf != NULL) { 2998 free(lifs.lifs_buf); 2999 lifs.lifs_buf = NULL; 3000 } 3001 lifs.lifs_len = 0; 3002 break; 3003 } 3004 if (lifs.lifs_len <= lifs.lifs_maxlen) 3005 break; 3006 /* Use kernel's size + a small margin to avoid loops */ 3007 lifs.lifs_maxlen = lifs.lifs_len + 3008 5 * sizeof (struct lifreq); 3009 /* For the first pass, realloc acts like malloc */ 3010 newbuf = realloc(lifs.lifs_buf, lifs.lifs_maxlen); 3011 if (newbuf == NULL) { 3012 if (lifs.lifs_buf != NULL) { 3013 free(lifs.lifs_buf); 3014 lifs.lifs_buf = NULL; 3015 } 3016 lifs.lifs_len = 0; 3017 break; 3018 } 3019 lifs.lifs_buf = newbuf; 3020 } 3021 3022 3023 numifs = lifs.lifs_len / sizeof (struct lifreq); 3024 if (numifs > 0) { 3025 lifrp = lifs.lifs_req; 3026 (void) printf("\n\tsrcof"); 3027 for (n = numifs; n > 0; n--, lifrp++) { 3028 (void) printf(" %s", lifrp->lifr_name); 3029 } 3030 } 3031 3032 if (lifs.lifs_buf != NULL) 3033 free(lifs.lifs_buf); 3034 } 3035 3036 /* Find the interface whose source address this interface uses */ 3037 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) == 0) { 3038 if (lifr.lifr_index != 0) { 3039 if (if_indextoname(lifr.lifr_index, 3040 if_usesrc_name) == NULL) { 3041 (void) printf("\n\tusesrc ifIndex %d", 3042 lifr.lifr_index); 3043 } else { 3044 (void) printf("\n\tusesrc %s", if_usesrc_name); 3045 } 3046 } 3047 } 3048 3049 (void) putchar('\n'); 3050 } 3051 3052 3053 /* 3054 * Print the status of the interface. If an address family was 3055 * specified, show it and it only; otherwise, show them all. 3056 */ 3057 static void 3058 status(void) 3059 { 3060 struct afswtch *p = afp; 3061 uint64_t flags; 3062 3063 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3064 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 3065 Perror0_exit("status: SIOCGLIFFLAGS"); 3066 } 3067 3068 flags = lifr.lifr_flags; 3069 3070 /* 3071 * Only print the interface status if the address family matches 3072 * the interface family flag. 3073 */ 3074 if (p != NULL) { 3075 if (((p->af_af == AF_INET6) && (flags & IFF_IPV4)) || 3076 ((p->af_af == AF_INET) && (flags & IFF_IPV6))) 3077 return; 3078 } 3079 3080 /* 3081 * In V4 compatibility mode, don't print IFF_IPV6 interfaces. 3082 */ 3083 if (v4compat && (flags & IFF_IPV6)) 3084 return; 3085 3086 ifstatus(name); 3087 3088 if (p != NULL) { 3089 (*p->af_status)(1, flags); 3090 } else { 3091 for (p = afs; p->af_name; p++) { 3092 (void) close(s); 3093 s = socket(SOCKET_AF(p->af_af), SOCK_DGRAM, 0); 3094 /* set global af for use in p->af_status */ 3095 af = p->af_af; 3096 if (s == -1) { 3097 Perror0_exit("socket"); 3098 } 3099 (*p->af_status)(0, flags); 3100 } 3101 3102 /* 3103 * Historically, 'ether' has been an address family, 3104 * so print it here. 3105 */ 3106 print_ifether(name); 3107 } 3108 } 3109 3110 /* 3111 * Print the status of the interface in a format that can be used to 3112 * reconfigure the interface later. Code stolen from status() above. 3113 */ 3114 /* ARGSUSED */ 3115 static int 3116 configinfo(char *null, int64_t param) 3117 { 3118 char *cp; 3119 struct afswtch *p = afp; 3120 uint64_t flags; 3121 char lifname[LIFNAMSIZ]; 3122 char if_usesrc_name[LIFNAMSIZ]; 3123 3124 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3125 3126 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 3127 Perror0_exit("status: SIOCGLIFFLAGS"); 3128 } 3129 flags = lifr.lifr_flags; 3130 3131 if (debug) { 3132 (void) printf("configinfo: name %s flags 0x%llx af_af %d\n", 3133 name, flags, p != NULL ? p->af_af : -1); 3134 } 3135 3136 /* 3137 * Build the interface name to print (we can't directly use `name' 3138 * because one cannot "plumb" ":0" interfaces). 3139 */ 3140 (void) strlcpy(lifname, name, LIFNAMSIZ); 3141 if ((cp = strchr(lifname, ':')) != NULL && atoi(cp + 1) == 0) 3142 *cp = '\0'; 3143 3144 /* 3145 * if the interface is IPv4 3146 * if we have a IPv6 address family restriction return 3147 * so it won't print 3148 * if we are in IPv4 compatibility mode, clear out IFF_IPV4 3149 * so we don't print it. 3150 */ 3151 if (flags & IFF_IPV4) { 3152 if (p && p->af_af == AF_INET6) 3153 return (-1); 3154 if (v4compat) 3155 flags &= ~IFF_IPV4; 3156 3157 (void) printf("%s inet plumb", lifname); 3158 } else if (flags & IFF_IPV6) { 3159 /* 3160 * else if the interface is IPv6 3161 * if we have a IPv4 address family restriction return 3162 * or we are in IPv4 compatibiltiy mode, return. 3163 */ 3164 if (p && p->af_af == AF_INET) 3165 return (-1); 3166 if (v4compat) 3167 return (-1); 3168 3169 (void) printf("%s inet6 plumb", lifname); 3170 } 3171 3172 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3173 if (ioctl(s, SIOCGLIFMETRIC, (caddr_t)&lifr) < 0) { 3174 Perror0_exit("configinfo: SIOCGLIFMETRIC"); 3175 } else { 3176 if (lifr.lifr_metric) 3177 (void) printf(" metric %d ", lifr.lifr_metric); 3178 } 3179 if (((flags & (IFF_VIRTUAL|IFF_LOOPBACK)) != IFF_VIRTUAL) && 3180 ioctl(s, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) 3181 (void) printf(" mtu %d", lifr.lifr_metric); 3182 3183 /* Index only applies to the zeroth interface */ 3184 if (lifnum(name) == 0) { 3185 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) 3186 (void) printf(" index %d", lifr.lifr_index); 3187 } 3188 3189 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) == 0) { 3190 if (lifr.lifr_index != 0) { 3191 if (if_indextoname(lifr.lifr_index, 3192 if_usesrc_name) != NULL) { 3193 (void) printf(" usesrc %s", if_usesrc_name); 3194 } 3195 } 3196 } 3197 3198 if (p != NULL) { 3199 (*p->af_configinfo)(1, flags); 3200 } else { 3201 for (p = afs; p->af_name; p++) { 3202 (void) close(s); 3203 s = socket(SOCKET_AF(p->af_af), SOCK_DGRAM, 0); 3204 /* set global af for use in p->af_configinfo */ 3205 af = p->af_af; 3206 if (s == -1) { 3207 Perror0_exit("socket"); 3208 } 3209 (*p->af_configinfo)(0, flags); 3210 } 3211 } 3212 3213 (void) printf("\n"); 3214 return (0); 3215 } 3216 3217 static void 3218 print_tsec(struct iftun_req *tparams) 3219 { 3220 ipsec_req_t *ipsr; 3221 3222 (void) printf("\ttunnel security settings "); 3223 /* 3224 * Deal with versioning, for now just point 3225 * an ipsec_req_t at ifta_secinfo. If versions 3226 * change, something else will overlay ifta_secinfo. 3227 */ 3228 assert(tparams->ifta_vers == IFTUN_VERSION); 3229 3230 if (tparams->ifta_flags & IFTUN_COMPLEX_SECURITY) { 3231 (void) printf("--> use 'ipsecconf -ln -i %s'", 3232 tparams->ifta_lifr_name); 3233 } else { 3234 ipsr = (ipsec_req_t *)(&tparams->ifta_secinfo); 3235 if (ipsr->ipsr_ah_req & IPSEC_PREF_REQUIRED) { 3236 (void) printf("ah (%s) ", 3237 rparsealg(ipsr->ipsr_auth_alg, IPSEC_PROTO_AH)); 3238 } 3239 if (ipsr->ipsr_esp_req & IPSEC_PREF_REQUIRED) { 3240 (void) printf("esp (%s", 3241 rparsealg(ipsr->ipsr_esp_alg, IPSEC_PROTO_ESP)); 3242 (void) printf("/%s)", 3243 rparsealg(ipsr->ipsr_esp_auth_alg, IPSEC_PROTO_AH)); 3244 } 3245 } 3246 (void) printf("\n"); 3247 } 3248 3249 static void 3250 tun_status(void) 3251 { 3252 icfg_if_t interface; 3253 int rc; 3254 icfg_handle_t handle; 3255 int protocol; 3256 char srcbuf[INET6_ADDRSTRLEN]; 3257 char dstbuf[INET6_ADDRSTRLEN]; 3258 boolean_t tabbed; 3259 uint8_t hoplimit; 3260 int16_t encaplimit; 3261 struct sockaddr_storage taddr; 3262 socklen_t socklen = sizeof (taddr); 3263 3264 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 3265 interface.if_protocol = SOCKET_AF(af); 3266 if ((rc = icfg_open(&handle, &interface)) != ICFG_SUCCESS) 3267 Perror0_exit((char *)icfg_errmsg(rc)); 3268 3269 /* 3270 * only print tunnel info for lun 0. If ioctl fails, assume 3271 * we are not a tunnel 3272 */ 3273 if (strchr(name, ':') != NULL || 3274 icfg_get_tunnel_lower(handle, &protocol) != ICFG_SUCCESS) { 3275 icfg_close(handle); 3276 return; 3277 } 3278 3279 switch (protocol) { 3280 case AF_INET: 3281 (void) printf("\tinet"); 3282 break; 3283 case AF_INET6: 3284 (void) printf("\tinet6"); 3285 break; 3286 default: 3287 Perror0_exit("\ttunnel: Illegal lower stream\n\t"); 3288 break; 3289 } 3290 3291 rc = icfg_get_tunnel_src(handle, (struct sockaddr *)&taddr, &socklen); 3292 if (rc == ICFG_NOT_SET) { 3293 (void) strlcpy(srcbuf, (protocol == AF_INET) ? "0.0.0.0" : 3294 "::", sizeof (srcbuf)); 3295 } else if (rc != ICFG_SUCCESS) { 3296 Perror0_exit((char *)icfg_errmsg(rc)); 3297 } else { 3298 rc = icfg_sockaddr_to_str(protocol, (struct sockaddr *)&taddr, 3299 srcbuf, sizeof (srcbuf)); 3300 if (rc != ICFG_SUCCESS) { 3301 Perror0_exit((char *)icfg_errmsg(rc)); 3302 } 3303 } 3304 3305 (void) printf(" tunnel src %s ", srcbuf); 3306 3307 rc = icfg_get_tunnel_dest(handle, (struct sockaddr *)&taddr, &socklen); 3308 if (rc == ICFG_NOT_SET) { 3309 (void) printf("\n"); 3310 } else { 3311 rc = icfg_sockaddr_to_str(protocol, (struct sockaddr *)&taddr, 3312 dstbuf, sizeof (dstbuf)); 3313 if (rc != ICFG_SUCCESS) { 3314 Perror0_exit((char *)icfg_errmsg(rc)); 3315 } 3316 (void) printf("tunnel dst %s\n", dstbuf); 3317 } 3318 3319 if (handle->ifh_tunnel_params != NULL && 3320 (handle->ifh_tunnel_params->ifta_flags & IFTUN_SECURITY)) 3321 print_tsec(handle->ifh_tunnel_params); 3322 3323 /* 3324 * tabbed indicates tabbed and printed. Use it tell us whether 3325 * to tab and that we've printed something here, so we need a 3326 * newline 3327 */ 3328 tabbed = _B_FALSE; 3329 3330 if (icfg_get_tunnel_hoplimit(handle, &hoplimit) == ICFG_SUCCESS) { 3331 (void) printf("\ttunnel hop limit %d ", hoplimit); 3332 tabbed = _B_TRUE; 3333 } 3334 3335 if ((protocol == AF_INET6) && 3336 (icfg_get_tunnel_encaplimit(handle, &encaplimit) == 3337 ICFG_SUCCESS)) { 3338 if (!tabbed) { 3339 (void) printf("\t"); 3340 tabbed = _B_TRUE; 3341 } 3342 if (encaplimit >= 0) { 3343 (void) printf("tunnel encapsulation limit %d", 3344 encaplimit); 3345 } else { 3346 (void) printf("tunnel encapsulation limit disabled"); 3347 } 3348 } 3349 3350 if (tabbed) 3351 (void) printf("\n"); 3352 3353 icfg_close(handle); 3354 } 3355 3356 static void 3357 in_status(int force, uint64_t flags) 3358 { 3359 struct sockaddr_in *sin, *laddr; 3360 struct sockaddr_in netmask = { AF_INET }; 3361 3362 if (debug) 3363 (void) printf("in_status(%s) flags 0x%llx\n", name, flags); 3364 3365 /* only print status for IPv4 interfaces */ 3366 if (!(flags & IFF_IPV4)) 3367 return; 3368 3369 /* if the interface is a tunnel, print the tunnel status */ 3370 tun_status(); 3371 3372 if (!(flags & IFF_NOLOCAL)) { 3373 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3374 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3375 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3376 errno == ENXIO) { 3377 if (!force) 3378 return; 3379 (void) memset(&lifr.lifr_addr, 0, 3380 sizeof (lifr.lifr_addr)); 3381 } else 3382 Perror0_exit("in_status: SIOCGLIFADDR"); 3383 } 3384 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3385 (void) printf("\tinet %s ", inet_ntoa(sin->sin_addr)); 3386 laddr = sin; 3387 } else { 3388 (void) printf("\tinet "); 3389 } 3390 3391 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3392 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3393 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3394 errno == ENXIO) { 3395 if (!force) 3396 return; 3397 (void) memset(&lifr.lifr_addr, 0, 3398 sizeof (lifr.lifr_addr)); 3399 } else { 3400 Perror0_exit("in_status: SIOCGLIFSUBNET"); 3401 } 3402 } 3403 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3404 if ((flags & IFF_NOLOCAL) || 3405 sin->sin_addr.s_addr != laddr->sin_addr.s_addr) { 3406 (void) printf("subnet %s/%d ", inet_ntoa(sin->sin_addr), 3407 lifr.lifr_addrlen); 3408 } 3409 if (sin->sin_family != AF_INET) { 3410 (void) printf("Wrong family: %d\n", sin->sin_family); 3411 } 3412 3413 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3414 if (ioctl(s, SIOCGLIFNETMASK, (caddr_t)&lifr) < 0) { 3415 if (errno != EADDRNOTAVAIL) 3416 Perror0_exit("in_status: SIOCGLIFNETMASK"); 3417 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 3418 } else 3419 netmask.sin_addr = 3420 ((struct sockaddr_in *)&lifr.lifr_addr)->sin_addr; 3421 if (flags & IFF_POINTOPOINT) { 3422 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3423 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3424 if (errno == EADDRNOTAVAIL) 3425 (void) memset(&lifr.lifr_addr, 0, 3426 sizeof (lifr.lifr_addr)); 3427 else 3428 Perror0_exit("in_status: SIOCGLIFDSTADDR"); 3429 } 3430 sin = (struct sockaddr_in *)&lifr.lifr_dstaddr; 3431 (void) printf("--> %s ", inet_ntoa(sin->sin_addr)); 3432 } 3433 (void) printf("netmask %x ", ntohl(netmask.sin_addr.s_addr)); 3434 if (flags & IFF_BROADCAST) { 3435 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3436 if (ioctl(s, SIOCGLIFBRDADDR, (caddr_t)&lifr) < 0) { 3437 if (errno == EADDRNOTAVAIL) 3438 (void) memset(&lifr.lifr_addr, 0, 3439 sizeof (lifr.lifr_addr)); 3440 else 3441 Perror0_exit("in_status: SIOCGLIFBRDADDR"); 3442 } 3443 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3444 if (sin->sin_addr.s_addr != 0) { 3445 (void) printf("broadcast %s", 3446 inet_ntoa(sin->sin_addr)); 3447 } 3448 } 3449 /* If there is a groupname, print it for only the physical interface */ 3450 if (strchr(name, ':') == NULL) { 3451 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) >= 0 && 3452 lifr.lifr_groupname[0] != '\0') { 3453 (void) printf("\n\tgroupname %s", lifr.lifr_groupname); 3454 } 3455 } 3456 (void) putchar('\n'); 3457 } 3458 3459 static void 3460 in6_status(int force, uint64_t flags) 3461 { 3462 char abuf[INET6_ADDRSTRLEN]; 3463 struct sockaddr_in6 *sin6, *laddr6; 3464 3465 if (debug) 3466 (void) printf("in6_status(%s) flags 0x%llx\n", name, flags); 3467 3468 if (!(flags & IFF_IPV6)) 3469 return; 3470 3471 /* if the interface is a tunnel, print the tunnel status */ 3472 tun_status(); 3473 3474 if (!(flags & IFF_NOLOCAL)) { 3475 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3476 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3477 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3478 errno == ENXIO) { 3479 if (!force) 3480 return; 3481 (void) memset(&lifr.lifr_addr, 0, 3482 sizeof (lifr.lifr_addr)); 3483 } else 3484 Perror0_exit("in_status6: SIOCGLIFADDR"); 3485 } 3486 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3487 (void) printf("\tinet6 %s/%d ", 3488 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3489 abuf, sizeof (abuf)), 3490 lifr.lifr_addrlen); 3491 laddr6 = sin6; 3492 } else { 3493 (void) printf("\tinet6 "); 3494 } 3495 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3496 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3497 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3498 errno == ENXIO) { 3499 if (!force) 3500 return; 3501 (void) memset(&lifr.lifr_addr, 0, 3502 sizeof (lifr.lifr_addr)); 3503 } else 3504 Perror0_exit("in_status6: SIOCGLIFSUBNET"); 3505 } 3506 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3507 if ((flags & IFF_NOLOCAL) || 3508 !IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &laddr6->sin6_addr)) { 3509 (void) printf("subnet %s/%d ", 3510 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3511 abuf, sizeof (abuf)), 3512 lifr.lifr_addrlen); 3513 } 3514 if (sin6->sin6_family != AF_INET6) { 3515 (void) printf("Wrong family: %d\n", sin6->sin6_family); 3516 } 3517 if (flags & IFF_POINTOPOINT) { 3518 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3519 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3520 if (errno == EADDRNOTAVAIL) 3521 (void) memset(&lifr.lifr_addr, 0, 3522 sizeof (lifr.lifr_addr)); 3523 else 3524 Perror0_exit("in_status6: SIOCGLIFDSTADDR"); 3525 } 3526 sin6 = (struct sockaddr_in6 *)&lifr.lifr_dstaddr; 3527 (void) printf("--> %s ", 3528 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3529 abuf, sizeof (abuf))); 3530 } 3531 if (verbose) { 3532 (void) putchar('\n'); 3533 (void) putchar('\t'); 3534 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3535 if (ioctl(s, SIOCGLIFTOKEN, (caddr_t)&lifr) < 0) { 3536 if (errno == EADDRNOTAVAIL || errno == EINVAL) 3537 (void) memset(&lifr.lifr_addr, 0, 3538 sizeof (lifr.lifr_addr)); 3539 else 3540 Perror0_exit("in_status6: SIOCGLIFTOKEN"); 3541 } else { 3542 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3543 (void) printf("token %s/%d ", 3544 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3545 abuf, sizeof (abuf)), 3546 lifr.lifr_addrlen); 3547 } 3548 if (ioctl(s, SIOCGLIFLNKINFO, (caddr_t)&lifr) < 0) { 3549 if (errno != EINVAL) { 3550 Perror0_exit("in_status6: SIOCGLIFLNKINFO"); 3551 } 3552 } else { 3553 (void) printf("maxhops %u, reachtime %u ms, " 3554 "reachretrans %u ms, maxmtu %u ", 3555 lifr.lifr_ifinfo.lir_maxhops, 3556 lifr.lifr_ifinfo.lir_reachtime, 3557 lifr.lifr_ifinfo.lir_reachretrans, 3558 lifr.lifr_ifinfo.lir_maxmtu); 3559 } 3560 } 3561 /* If there is a groupname, print it for only the physical interface */ 3562 if (strchr(name, ':') == NULL) { 3563 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) >= 0 && 3564 lifr.lifr_groupname[0] != '\0') { 3565 (void) printf("\n\tgroupname %s", lifr.lifr_groupname); 3566 } 3567 } 3568 (void) putchar('\n'); 3569 } 3570 3571 static void 3572 in_configinfo(int force, uint64_t flags) 3573 { 3574 struct sockaddr_in *sin, *laddr; 3575 struct sockaddr_in netmask = { AF_INET }; 3576 3577 if (debug) 3578 (void) printf("in_configinfo(%s) flags 0x%llx\n", name, flags); 3579 3580 /* only configinfo info for IPv4 interfaces */ 3581 if (!(flags & IFF_IPV4)) 3582 return; 3583 3584 if (!(flags & IFF_NOLOCAL)) { 3585 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3586 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3587 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3588 errno == ENXIO) { 3589 if (!force) 3590 return; 3591 (void) memset(&lifr.lifr_addr, 0, 3592 sizeof (lifr.lifr_addr)); 3593 } else 3594 Perror0_exit("in_configinfo: SIOCGLIFADDR"); 3595 } 3596 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3597 (void) printf(" set %s ", inet_ntoa(sin->sin_addr)); 3598 laddr = sin; 3599 } 3600 3601 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3602 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3603 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3604 errno == ENXIO) { 3605 if (!force) 3606 return; 3607 (void) memset(&lifr.lifr_addr, 0, 3608 sizeof (lifr.lifr_addr)); 3609 } else { 3610 Perror0_exit("in_configinfo: SIOCGLIFSUBNET"); 3611 } 3612 } 3613 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3614 3615 if ((flags & IFF_NOLOCAL) || 3616 sin->sin_addr.s_addr != laddr->sin_addr.s_addr) { 3617 (void) printf(" subnet %s/%d ", inet_ntoa(sin->sin_addr), 3618 lifr.lifr_addrlen); 3619 } 3620 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3621 if (ioctl(s, SIOCGLIFNETMASK, (caddr_t)&lifr) < 0) { 3622 if (errno != EADDRNOTAVAIL) 3623 Perror0_exit("in_configinfo: SIOCGLIFNETMASK"); 3624 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 3625 } else 3626 netmask.sin_addr = 3627 ((struct sockaddr_in *)&lifr.lifr_addr)->sin_addr; 3628 if (flags & IFF_POINTOPOINT) { 3629 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3630 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3631 if (errno == EADDRNOTAVAIL) 3632 (void) memset(&lifr.lifr_addr, 0, 3633 sizeof (lifr.lifr_addr)); 3634 else 3635 Perror0_exit("in_configinfo: SIOCGLIFDSTADDR"); 3636 } 3637 sin = (struct sockaddr_in *)&lifr.lifr_dstaddr; 3638 (void) printf(" destination %s ", inet_ntoa(sin->sin_addr)); 3639 } 3640 (void) printf(" netmask 0x%x ", ntohl(netmask.sin_addr.s_addr)); 3641 if (flags & IFF_BROADCAST) { 3642 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3643 if (ioctl(s, SIOCGLIFBRDADDR, (caddr_t)&lifr) < 0) { 3644 if (errno == EADDRNOTAVAIL) 3645 (void) memset(&lifr.lifr_addr, 0, 3646 sizeof (lifr.lifr_addr)); 3647 else 3648 Perror0_exit("in_configinfo: SIOCGLIFBRDADDR"); 3649 } 3650 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3651 if (sin->sin_addr.s_addr != 0) { 3652 (void) printf(" broadcast %s ", 3653 inet_ntoa(sin->sin_addr)); 3654 } 3655 } 3656 3657 /* If there is a groupname, print it for only the zeroth interface */ 3658 if (lifnum(name) == 0) { 3659 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) >= 0 && 3660 lifr.lifr_groupname[0] != '\0') { 3661 (void) printf(" group %s ", lifr.lifr_groupname); 3662 } 3663 } 3664 3665 /* Print flags to configure */ 3666 print_config_flags(AF_INET, flags); 3667 } 3668 3669 static void 3670 in6_configinfo(int force, uint64_t flags) 3671 { 3672 char abuf[INET6_ADDRSTRLEN]; 3673 struct sockaddr_in6 *sin6, *laddr6; 3674 3675 if (debug) 3676 (void) printf("in6_configinfo(%s) flags 0x%llx\n", name, 3677 flags); 3678 3679 if (!(flags & IFF_IPV6)) 3680 return; 3681 3682 if (!(flags & IFF_NOLOCAL)) { 3683 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3684 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3685 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3686 errno == ENXIO) { 3687 if (!force) 3688 return; 3689 (void) memset(&lifr.lifr_addr, 0, 3690 sizeof (lifr.lifr_addr)); 3691 } else 3692 Perror0_exit("in6_configinfo: SIOCGLIFADDR"); 3693 } 3694 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3695 (void) printf(" set %s/%d ", 3696 inet_ntop(AF_INET6, &sin6->sin6_addr, abuf, sizeof (abuf)), 3697 lifr.lifr_addrlen); 3698 laddr6 = sin6; 3699 } 3700 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3701 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3702 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3703 errno == ENXIO) { 3704 if (!force) 3705 return; 3706 (void) memset(&lifr.lifr_addr, 0, 3707 sizeof (lifr.lifr_addr)); 3708 } else 3709 Perror0_exit("in6_configinfo: SIOCGLIFSUBNET"); 3710 } 3711 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3712 if ((flags & IFF_NOLOCAL) || 3713 !IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &laddr6->sin6_addr)) { 3714 (void) printf(" subnet %s/%d ", 3715 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3716 abuf, sizeof (abuf)), 3717 lifr.lifr_addrlen); 3718 } 3719 3720 if (flags & IFF_POINTOPOINT) { 3721 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3722 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3723 if (errno == EADDRNOTAVAIL) 3724 (void) memset(&lifr.lifr_addr, 0, 3725 sizeof (lifr.lifr_addr)); 3726 else 3727 Perror0_exit("in6_configinfo: SIOCGLIFDSTADDR"); 3728 } 3729 sin6 = (struct sockaddr_in6 *)&lifr.lifr_dstaddr; 3730 (void) printf(" destination %s ", 3731 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3732 abuf, sizeof (abuf))); 3733 } 3734 3735 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3736 if (ioctl(s, SIOCGLIFTOKEN, (caddr_t)&lifr) < 0) { 3737 if (errno == EADDRNOTAVAIL || errno == EINVAL) 3738 (void) memset(&lifr.lifr_addr, 0, 3739 sizeof (lifr.lifr_addr)); 3740 else 3741 Perror0_exit("in6_configinfo: SIOCGLIFTOKEN"); 3742 } else { 3743 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3744 (void) printf(" token %s/%d ", 3745 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3746 abuf, sizeof (abuf)), 3747 lifr.lifr_addrlen); 3748 } 3749 3750 /* If there is a groupname, print it for only the zeroth interface */ 3751 if (lifnum(name) == 0) { 3752 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) >= 0 && 3753 lifr.lifr_groupname[0] != '\0') { 3754 (void) printf(" group %s ", lifr.lifr_groupname); 3755 } 3756 } 3757 3758 /* Print flags to configure */ 3759 print_config_flags(AF_INET6, flags); 3760 } 3761 3762 /* 3763 * We need to plink both the arp-device stream and the arp-ip-device stream. 3764 * However the muxid is stored only in IP. Plumbing 2 streams individually 3765 * is not atomic, and if ifconfig is killed, the resulting plumbing can 3766 * be inconsistent. For eg. if only the arp stream is plumbed, we have lost 3767 * the muxid, and the half-baked plumbing can neither be unplumbed nor 3768 * replumbed, thus requiring a reboot. To avoid the above the following 3769 * scheme is used. 3770 * 3771 * Ifconfig asks IP to enforce atomicity of plumbing the arp and IP streams. 3772 * This is done by pushing arp on to the mux (/dev/udp). ARP adds some 3773 * extra information in the I_PLINK and I_PUNLINK ioctls to let IP know 3774 * that the plumbing/unplumbing has to be done atomically. Ifconfig plumbs 3775 * the IP stream first, and unplumbs it last. The kernel (IP) does not 3776 * allow IP stream to be unplumbed without unplumbing arp stream. Similarly 3777 * it does not allow arp stream to be plumbed before IP stream is plumbed. 3778 * There is no need to use SIOCSLIFMUXID, since the whole operation is atomic, 3779 * and IP uses the info in the I_PLINK message to get the muxid. 3780 * 3781 * a. STREAMS does not allow us to use /dev/ip itself as the mux. So we use 3782 * /dev/udp{,6}. 3783 * b. SIOCGLIFMUXID returns the muxid corresponding to the V4 or V6 stream 3784 * depending on the open i.e. V4 vs V6 open. So we need to use /dev/udp 3785 * or /dev/udp6 for SIOCGLIFMUXID and SIOCSLIFMUXID. 3786 * c. We need to push ARP in order to get the required kernel support for 3787 * atomic plumbings. The actual work done by ARP is explained in arp.c 3788 * Without pushing ARP, we will still be able to plumb/unplumb. But 3789 * it is not atomic, and is supported by the kernel for backward 3790 * compatibility for other utilities like atmifconfig etc. In this case 3791 * the utility must use SIOCSLIFMUXID. 3792 */ 3793 static int 3794 ifplumb(const char *linkname, const char *ifname, boolean_t genppa, int af) 3795 { 3796 int arp_muxid = -1, ip_muxid; 3797 int mux_fd, ip_fd, arp_fd; 3798 int retval; 3799 char *udp_dev_name; 3800 uint64_t flags; 3801 uint_t dlpi_flags; 3802 dlpi_handle_t dh_arp, dh_ip; 3803 3804 /* 3805 * Always dlpi_open() with DLPI_NOATTACH because the IP and ARP module 3806 * will do the attach themselves for DLPI style-2 links. 3807 */ 3808 dlpi_flags = DLPI_NOATTACH; 3809 3810 /* 3811 * If `linkname' is the special token IPMPSTUB, then this is a request 3812 * to create an IPMP interface atop /dev/ipmpstub0. (We can't simply 3813 * pass "ipmpstub0" as `linkname' since an admin *could* have a normal 3814 * vanity-named link named "ipmpstub0" that they'd like to plumb.) 3815 */ 3816 if (linkname == IPMPSTUB) { 3817 linkname = "ipmpstub0"; 3818 dlpi_flags |= DLPI_DEVONLY; 3819 } 3820 3821 retval = dlpi_open(linkname, &dh_ip, dlpi_flags); 3822 if (retval != DLPI_SUCCESS) 3823 Perrdlpi_exit("cannot open link", linkname, retval); 3824 3825 if (debug) { 3826 (void) printf("ifconfig: ifplumb: link %s, ifname %s, " 3827 "genppa %u\n", linkname, ifname, genppa); 3828 } 3829 3830 ip_fd = dlpi_fd(dh_ip); 3831 if (ioctl(ip_fd, I_PUSH, IP_MOD_NAME) == -1) 3832 Perror2_exit("I_PUSH", IP_MOD_NAME); 3833 3834 /* 3835 * Push the ARP module onto the interface stream. IP uses 3836 * this to send resolution requests up to ARP. We need to 3837 * do this before the SLIFNAME ioctl is sent down because 3838 * the interface becomes publicly known as soon as the SLIFNAME 3839 * ioctl completes. Thus some other process trying to bring up 3840 * the interface after SLIFNAME but before we have pushed ARP 3841 * could hang. We pop the module again later if it is not needed. 3842 */ 3843 if (ioctl(ip_fd, I_PUSH, ARP_MOD_NAME) == -1) 3844 Perror2_exit("I_PUSH", ARP_MOD_NAME); 3845 3846 /* 3847 * Prepare to set IFF_IPV4/IFF_IPV6 flags as part of SIOCSLIFNAME. 3848 * (At this point in time the kernel also allows an override of the 3849 * IFF_CANTCHANGE flags.) 3850 */ 3851 lifr.lifr_name[0] = '\0'; 3852 if (ioctl(ip_fd, SIOCGLIFFLAGS, (char *)&lifr) == -1) 3853 Perror0_exit("ifplumb: SIOCGLIFFLAGS"); 3854 3855 if (af == AF_INET6) { 3856 flags = lifr.lifr_flags | IFF_IPV6; 3857 flags &= ~(IFF_BROADCAST | IFF_IPV4); 3858 } else { 3859 flags = lifr.lifr_flags | IFF_IPV4; 3860 flags &= ~IFF_IPV6; 3861 } 3862 3863 /* 3864 * Set the interface name. If we've been asked to generate the PPA, 3865 * then find the lowest available PPA (only currently used for IPMP 3866 * interfaces). Otherwise, use the interface name as-is. 3867 */ 3868 if (genppa) { 3869 int ppa; 3870 3871 /* 3872 * We'd like to just set lifr_ppa to UINT_MAX and have the 3873 * kernel pick a PPA. Unfortunately, that would mishandle 3874 * two cases: 3875 * 3876 * 1. If the PPA is available but the groupname is taken 3877 * (e.g., the "ipmp2" IP interface name is available 3878 * but the "ipmp2" groupname is taken) then the 3879 * auto-assignment by the kernel will fail. 3880 * 3881 * 2. If we're creating (e.g.) an IPv6-only IPMP 3882 * interface, and there's already an IPv4-only IPMP 3883 * interface, the kernel will allow us to accidentally 3884 * reuse the IPv6 IPMP interface name (since 3885 * SIOCSLIFNAME uniqueness is per-interface-type). 3886 * This will cause administrative confusion. 3887 * 3888 * Thus, we instead take a brute-force approach of checking 3889 * whether the IPv4 or IPv6 name is already in-use before 3890 * attempting the SIOCSLIFNAME. As per (1) above, the 3891 * SIOCSLIFNAME may still fail, in which case we just proceed 3892 * to the next one. If this approach becomes too slow, we 3893 * can add a new SIOC* to handle this case in the kernel. 3894 */ 3895 for (ppa = 0; ppa < UINT_MAX; ppa++) { 3896 (void) snprintf(lifr.lifr_name, LIFNAMSIZ, "%s%d", 3897 ifname, ppa); 3898 3899 if (ioctl(s4, SIOCGLIFFLAGS, &lifr) != -1 || 3900 errno != ENXIO) 3901 continue; 3902 3903 if (ioctl(s6, SIOCGLIFFLAGS, &lifr) != -1 || 3904 errno != ENXIO) 3905 continue; 3906 3907 lifr.lifr_ppa = ppa; 3908 lifr.lifr_flags = flags; 3909 retval = ioctl(ip_fd, SIOCSLIFNAME, &lifr); 3910 if (retval != -1 || errno != EEXIST) 3911 break; 3912 } 3913 } else { 3914 ifspec_t ifsp; 3915 3916 /* 3917 * The interface name could have come from the command-line; 3918 * check it. 3919 */ 3920 if (!ifparse_ifspec(ifname, &ifsp) || ifsp.ifsp_lunvalid) 3921 Perror2_exit("invalid IP interface name", ifname); 3922 3923 /* 3924 * Before we call SIOCSLIFNAME, ensure that the IPMP group 3925 * interface for this address family exists. Otherwise, the 3926 * kernel will kick the interface out of the group when we do 3927 * the SIOCSLIFNAME. 3928 * 3929 * Example: suppose bge0 is plumbed for IPv4 and in group "a". 3930 * If we're now plumbing bge0 for IPv6, but the IPMP group 3931 * interface for "a" is not plumbed for IPv6, the SIOCSLIFNAME 3932 * will kick bge0 out of group "a", which is undesired. 3933 */ 3934 if (create_ipmp_peer(af, ifname) == -1) { 3935 (void) fprintf(stderr, "ifconfig: warning: cannot " 3936 "create %s IPMP group; %s will be removed from " 3937 "group\n", af == AF_INET ? "IPv4" : "IPv6", ifname); 3938 } 3939 3940 lifr.lifr_ppa = ifsp.ifsp_ppa; 3941 lifr.lifr_flags = flags; 3942 (void) strlcpy(lifr.lifr_name, ifname, LIFNAMSIZ); 3943 retval = ioctl(ip_fd, SIOCSLIFNAME, &lifr); 3944 } 3945 3946 if (retval == -1) { 3947 if (errno != EEXIST) 3948 Perror0_exit("SIOCSLIFNAME for ip"); 3949 /* 3950 * This difference between the way we behave for EEXIST 3951 * and that with other errors exists to preserve legacy 3952 * behaviour. Earlier when foreachinterface() and matchif() 3953 * were doing the duplicate interface name checks, for 3954 * already existing interfaces, inetplumb() returned "0". 3955 * To preserve this behaviour, Perror0() and return are 3956 * called for EEXIST. 3957 */ 3958 Perror0("SIOCSLIFNAME for ip"); 3959 return (-1); 3960 } 3961 3962 /* Get the full set of existing flags for this stream */ 3963 if (ioctl(ip_fd, SIOCGLIFFLAGS, (char *)&lifr) == -1) 3964 Perror0_exit("ifplumb: SIOCGLIFFLAGS"); 3965 3966 if (debug) { 3967 (void) printf("ifconfig: ifplumb: %s got flags:\n", 3968 lifr.lifr_name); 3969 print_flags(lifr.lifr_flags); 3970 (void) putchar('\n'); 3971 } 3972 3973 /* Check if arp is not actually needed */ 3974 if (lifr.lifr_flags & (IFF_NOARP|IFF_IPV6)) { 3975 if (ioctl(ip_fd, I_POP, 0) == -1) 3976 Perror2_exit("I_POP", ARP_MOD_NAME); 3977 } 3978 3979 /* 3980 * Open "/dev/udp" for use as a multiplexor to PLINK the 3981 * interface stream under. We use "/dev/udp" instead of "/dev/ip" 3982 * since STREAMS will not let you PLINK a driver under itself, 3983 * and "/dev/ip" is typically the driver at the bottom of 3984 * the stream for tunneling interfaces. 3985 */ 3986 if (af == AF_INET6) 3987 udp_dev_name = UDP6_DEV_NAME; 3988 else 3989 udp_dev_name = UDP_DEV_NAME; 3990 if ((mux_fd = open_arp_on_udp(udp_dev_name)) == -1) 3991 exit(EXIT_FAILURE); 3992 3993 /* Check if arp is not needed */ 3994 if (lifr.lifr_flags & (IFF_NOARP|IFF_IPV6)) { 3995 /* 3996 * PLINK the interface stream so that ifconfig can exit 3997 * without tearing down the stream. 3998 */ 3999 if ((ip_muxid = ioctl(mux_fd, I_PLINK, ip_fd)) == -1) 4000 Perror0_exit("I_PLINK for ip"); 4001 (void) close(mux_fd); 4002 return (lifr.lifr_ppa); 4003 } 4004 4005 /* 4006 * This interface does use ARP, so set up a separate stream 4007 * from the interface to ARP. 4008 * 4009 * Note: modules specified by the user are pushed 4010 * only on the interface stream, not on the ARP stream. 4011 */ 4012 if (debug) 4013 (void) printf("ifconfig: ifplumb: interface %s", ifname); 4014 4015 retval = dlpi_open(linkname, &dh_arp, dlpi_flags); 4016 if (retval != DLPI_SUCCESS) 4017 Perrdlpi_exit("cannot open link", linkname, retval); 4018 4019 arp_fd = dlpi_fd(dh_arp); 4020 if (ioctl(arp_fd, I_PUSH, ARP_MOD_NAME) == -1) 4021 Perror2_exit("I_PUSH", ARP_MOD_NAME); 4022 4023 /* 4024 * Tell ARP the name and unit number for this interface. 4025 * Note that arp has no support for transparent ioctls. 4026 */ 4027 if (strioctl(arp_fd, SIOCSLIFNAME, &lifr, sizeof (lifr)) == -1) { 4028 if (errno != EEXIST) 4029 Perror0_exit("SIOCSLIFNAME for arp"); 4030 Perror0("SIOCSLIFNAME for arp"); 4031 goto out; 4032 } 4033 4034 /* 4035 * PLINK the IP and ARP streams so that ifconfig can exit 4036 * without tearing down the stream. 4037 */ 4038 if ((ip_muxid = ioctl(mux_fd, I_PLINK, ip_fd)) == -1) 4039 Perror0_exit("I_PLINK for ip"); 4040 if ((arp_muxid = ioctl(mux_fd, I_PLINK, arp_fd)) == -1) { 4041 (void) ioctl(mux_fd, I_PUNLINK, ip_muxid); 4042 Perror0_exit("I_PLINK for arp"); 4043 } 4044 4045 if (debug) 4046 (void) printf("arp muxid = %d\n", arp_muxid); 4047 out: 4048 dlpi_close(dh_ip); 4049 dlpi_close(dh_arp); 4050 (void) close(mux_fd); 4051 return (lifr.lifr_ppa); 4052 } 4053 4054 /* 4055 * If this is a physical interface then remove it. 4056 * If it is a logical interface name use SIOCLIFREMOVEIF to 4057 * remove it. In both cases fail if it doesn't exist. 4058 */ 4059 /* ARGSUSED */ 4060 static int 4061 inetunplumb(char *arg, int64_t param) 4062 { 4063 int ip_muxid, arp_muxid; 4064 int mux_fd; 4065 int muxid_fd; 4066 char *udp_dev_name; 4067 char *strptr; 4068 uint64_t flags; 4069 boolean_t changed_arp_muxid = _B_FALSE; 4070 int save_errno; 4071 boolean_t v6 = (afp->af_af == AF_INET6); 4072 4073 strptr = strchr(name, ':'); 4074 if (strptr != NULL || strcmp(name, LOOPBACK_IF) == 0) { 4075 /* Can't unplumb logical interface zero */ 4076 if (strptr != NULL && strcmp(strptr, ":0") == 0) { 4077 (void) fprintf(stderr, "ifconfig: unplumb:" 4078 " Cannot unplumb %s: Invalid interface\n", name); 4079 exit(1); 4080 } 4081 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4082 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 4083 4084 if (ioctl(s, SIOCLIFREMOVEIF, (caddr_t)&lifr) < 0) 4085 Perror0_exit("unplumb: SIOCLIFREMOVEIF"); 4086 return (0); 4087 } 4088 4089 /* 4090 * We used /dev/udp or udp6 to set up the mux. So we have to use 4091 * the same now for PUNLINK also. 4092 */ 4093 if (v6) 4094 udp_dev_name = UDP6_DEV_NAME; 4095 else 4096 udp_dev_name = UDP_DEV_NAME; 4097 4098 if ((muxid_fd = open(udp_dev_name, O_RDWR)) == -1) 4099 exit(EXIT_FAILURE); 4100 4101 if ((mux_fd = open_arp_on_udp(udp_dev_name)) == -1) 4102 exit(EXIT_FAILURE); 4103 4104 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4105 if (ioctl(muxid_fd, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 4106 Perror0_exit("unplumb: SIOCGLIFFLAGS"); 4107 } 4108 flags = lifr.lifr_flags; 4109 4110 if (flags & IFF_IPMP) { 4111 lifgroupinfo_t lifgr; 4112 ifaddrlistx_t *ifaddrs, *ifaddrp; 4113 4114 /* 4115 * The kernel will fail the I_PUNLINK if the group still has 4116 * members, but check now to provide a better error message. 4117 */ 4118 if (ioctl(s, SIOCGLIFGROUPNAME, &lifr) == -1) 4119 Perror0_exit("unplumb: SIOCGLIFGROUPNAME"); 4120 4121 (void) strlcpy(lifgr.gi_grname, lifr.lifr_groupname, 4122 LIFGRNAMSIZ); 4123 if (ioctl(s, SIOCGLIFGROUPINFO, &lifgr) == -1) 4124 Perror0_exit("unplumb: SIOCGLIFGROUPINFO"); 4125 4126 if ((v6 && lifgr.gi_nv6 != 0) || (!v6 && lifgr.gi_nv4 != 0)) { 4127 (void) fprintf(stderr, "ifconfig: %s: cannot unplumb:" 4128 " IPMP group is not empty\n", name); 4129 exit(1); 4130 } 4131 4132 /* 4133 * The kernel will fail the I_PUNLINK if the IPMP interface 4134 * has administratively up addresses; bring 'em down. 4135 */ 4136 if (ifaddrlistx(name, IFF_UP|IFF_DUPLICATE, 0, &ifaddrs) == -1) 4137 Perror2_exit(name, "cannot get address list"); 4138 4139 ifaddrp = ifaddrs; 4140 for (; ifaddrp != NULL; ifaddrp = ifaddrp->ia_next) { 4141 if (((ifaddrp->ia_flags & IFF_IPV6) && !v6) || 4142 (!(ifaddrp->ia_flags & IFF_IPV6) && v6)) 4143 continue; 4144 4145 if (!ifaddr_down(ifaddrp)) { 4146 Perror2_exit(ifaddrp->ia_name, 4147 "cannot bring down"); 4148 } 4149 } 4150 ifaddrlistx_free(ifaddrs); 4151 } 4152 4153 if (ioctl(muxid_fd, SIOCGLIFMUXID, (caddr_t)&lifr) < 0) { 4154 Perror0_exit("unplumb: SIOCGLIFMUXID"); 4155 } 4156 arp_muxid = lifr.lifr_arp_muxid; 4157 ip_muxid = lifr.lifr_ip_muxid; 4158 /* 4159 * We don't have a good way of knowing whether the arp stream is 4160 * plumbed. We can't rely on IFF_NOARP because someone could 4161 * have turned it off later using "ifconfig xxx -arp". 4162 */ 4163 if (arp_muxid != 0) { 4164 if (debug) 4165 (void) printf("arp_muxid %d\n", arp_muxid); 4166 if (ioctl(mux_fd, I_PUNLINK, arp_muxid) < 0) { 4167 if ((errno == EINVAL) && 4168 (flags & (IFF_NOARP | IFF_IPV6))) { 4169 /* 4170 * Some plumbing utilities set the muxid to 4171 * -1 or some invalid value to signify that 4172 * there is no arp stream. Set the muxid to 0 4173 * before trying to unplumb the IP stream. 4174 * IP does not allow the IP stream to be 4175 * unplumbed if it sees a non-null arp muxid, 4176 * for consistency of IP-ARP streams. 4177 */ 4178 lifr.lifr_arp_muxid = 0; 4179 (void) ioctl(muxid_fd, SIOCSLIFMUXID, 4180 (caddr_t)&lifr); 4181 changed_arp_muxid = _B_TRUE; 4182 } else { 4183 Perror0("I_PUNLINK for arp"); 4184 } 4185 } 4186 } 4187 if (debug) 4188 (void) printf("ip_muxid %d\n", ip_muxid); 4189 4190 if (ioctl(mux_fd, I_PUNLINK, ip_muxid) < 0) { 4191 if (changed_arp_muxid) { 4192 /* 4193 * Some error occurred, and we need to restore 4194 * everything back to what it was. 4195 */ 4196 save_errno = errno; 4197 lifr.lifr_arp_muxid = arp_muxid; 4198 lifr.lifr_ip_muxid = ip_muxid; 4199 (void) ioctl(muxid_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 4200 errno = save_errno; 4201 } 4202 Perror0_exit("I_PUNLINK for ip"); 4203 } 4204 (void) close(mux_fd); 4205 (void) close(muxid_fd); 4206 return (0); 4207 } 4208 4209 /* 4210 * If this is a physical interface then create it unless it is already 4211 * present. If it is a logical interface name use SIOCLIFADDIF to 4212 * create and (and fail it if already exists.) 4213 * As a special case send SIOCLIFADDIF for the loopback interface. This 4214 * is needed since there is no other notion of plumbing the loopback 4215 * interface. 4216 */ 4217 /* ARGSUSED */ 4218 static int 4219 inetplumb(char *arg, int64_t param) 4220 { 4221 char *strptr; 4222 boolean_t islo; 4223 zoneid_t zoneid; 4224 4225 strptr = strchr(name, ':'); 4226 islo = (strcmp(name, LOOPBACK_IF) == 0); 4227 4228 if (strptr != NULL || islo) { 4229 (void) memset(&lifr, 0, sizeof (lifr)); 4230 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4231 if (islo && ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) >= 0) { 4232 if (debug) { 4233 (void) fprintf(stderr, 4234 "ifconfig: %s already exists\n", name); 4235 } 4236 return (0); 4237 } 4238 if (ioctl(s, SIOCLIFADDIF, (caddr_t)&lifr) < 0) { 4239 if (errno == EEXIST) { 4240 if (debug) { 4241 (void) fprintf(stderr, 4242 "ifconfig: %s already exists\n", 4243 name); 4244 } 4245 } else { 4246 Perror2_exit("plumb: SIOCLIFADDIF", name); 4247 } 4248 } 4249 return (0); 4250 } 4251 4252 /* 4253 * For global zone, check if the interface is used by a non-global 4254 * zone, note that the non-global zones doesn't need this check, 4255 * because zoneadm has taken care of this when the zone boots. 4256 */ 4257 zoneid = getzoneid(); 4258 if (zoneid == GLOBAL_ZONEID) { 4259 int ret; 4260 4261 zoneid = ALL_ZONES; 4262 ret = zone_check_datalink(&zoneid, name); 4263 if (ret == 0) { 4264 char zonename[ZONENAME_MAX]; 4265 4266 (void) getzonenamebyid(zoneid, zonename, ZONENAME_MAX); 4267 (void) fprintf(stderr, "%s is used by non-global" 4268 "zone: %s\n", name, zonename); 4269 return (1); 4270 } 4271 } 4272 4273 if (debug) 4274 (void) printf("inetplumb: %s af %d\n", name, afp->af_af); 4275 4276 (void) ifplumb(name, name, _B_FALSE, afp->af_af); 4277 return (0); 4278 } 4279 4280 /* ARGSUSED */ 4281 static int 4282 inetipmp(char *arg, int64_t param) 4283 { 4284 int retval; 4285 4286 /* 4287 * Treat e.g. "ifconfig ipmp0:2 ipmp" as "ifconfig ipmp0:2 plumb". 4288 * Otherwise, try to create the requested IPMP interface. 4289 */ 4290 if (strchr(name, ':') != NULL) 4291 retval = inetplumb(arg, param); 4292 else 4293 retval = create_ipmp(name, afp->af_af, name, _B_FALSE); 4294 4295 /* 4296 * We'd return -1, but foreachinterface() doesn't propagate the error 4297 * into the exit status, so we're forced to explicitly exit(). 4298 */ 4299 if (retval == -1) 4300 exit(1); 4301 return (0); 4302 } 4303 4304 /* 4305 * Create an IPMP group `grname' with address family `af'. If `ifname' is 4306 * non-NULL, it specifies the interface name to use. Otherwise, use the name 4307 * ipmpN, where N corresponds to the lowest available integer. If `implicit' 4308 * is set, then the group is being created as a side-effect of placing an 4309 * underlying interface in a group. Also start in.mpathd if necessary. 4310 */ 4311 static int 4312 create_ipmp(const char *grname, int af, const char *ifname, boolean_t implicit) 4313 { 4314 int ppa; 4315 static int ipmp_daemon_started; 4316 4317 if (debug) { 4318 (void) printf("create_ipmp: ifname %s grname %s af %d\n", 4319 ifname != NULL ? ifname : "NULL", grname, af); 4320 } 4321 4322 if (ifname != NULL) 4323 ppa = ifplumb(IPMPSTUB, ifname, _B_FALSE, af); 4324 else 4325 ppa = ifplumb(IPMPSTUB, "ipmp", _B_TRUE, af); 4326 4327 if (ppa == -1) { 4328 Perror2(grname, "cannot create IPMP interface"); 4329 return (-1); 4330 } 4331 4332 if (ifname != NULL) 4333 (void) strlcpy(lifr.lifr_name, ifname, LIFNAMSIZ); 4334 else 4335 (void) snprintf(lifr.lifr_name, LIFNAMSIZ, "ipmp%d", ppa); 4336 4337 /* 4338 * To preserve backward-compatibility, always bring up the link-local 4339 * address for implicitly-created IPv6 IPMP interfaces. 4340 */ 4341 if (implicit && af == AF_INET6) { 4342 if (ioctl(s6, SIOCGLIFFLAGS, &lifr) == 0) { 4343 lifr.lifr_flags |= IFF_UP; 4344 (void) ioctl(s6, SIOCSLIFFLAGS, &lifr); 4345 } 4346 } 4347 4348 /* 4349 * If the caller requested a different group name, issue a 4350 * SIOCSLIFGROUPNAME on the new IPMP interface. 4351 */ 4352 if (strcmp(lifr.lifr_name, grname) != 0) { 4353 (void) strlcpy(lifr.lifr_groupname, grname, LIFGRNAMSIZ); 4354 if (ioctl(s, SIOCSLIFGROUPNAME, &lifr) == -1) { 4355 Perror0("SIOCSLIFGROUPNAME"); 4356 return (-1); 4357 } 4358 } 4359 4360 /* 4361 * If we haven't done so yet, ensure in.mpathd is started. 4362 */ 4363 if (ipmp_daemon_started++ == 0) 4364 start_ipmp_daemon(); 4365 4366 return (0); 4367 } 4368 4369 /* 4370 * Check if `ifname' is plumbed and in an IPMP group on its "other" address 4371 * family. If so, create a matching IPMP group for address family `af'. 4372 */ 4373 static int 4374 create_ipmp_peer(int af, const char *ifname) 4375 { 4376 int fd; 4377 lifgroupinfo_t lifgr; 4378 4379 assert(af == AF_INET || af == AF_INET6); 4380 4381 /* 4382 * Get the socket for the "other" address family. 4383 */ 4384 fd = (af == AF_INET) ? s6 : s4; 4385 4386 (void) strlcpy(lifr.lifr_name, ifname, LIFNAMSIZ); 4387 if (ioctl(fd, SIOCGLIFGROUPNAME, &lifr) != 0) 4388 return (0); 4389 4390 (void) strlcpy(lifgr.gi_grname, lifr.lifr_groupname, LIFGRNAMSIZ); 4391 if (ioctl(fd, SIOCGLIFGROUPINFO, &lifgr) != 0) 4392 return (0); 4393 4394 /* 4395 * If `ifname' *is* the IPMP group interface, or if the relevant 4396 * address family is already configured, then there's nothing to do. 4397 */ 4398 if (strcmp(lifgr.gi_grifname, ifname) == 0 || 4399 (af == AF_INET && lifgr.gi_v4) || (af == AF_INET6 && lifgr.gi_v6)) 4400 return (0); 4401 4402 return (create_ipmp(lifgr.gi_grname, af, lifgr.gi_grifname, _B_TRUE)); 4403 } 4404 4405 /* 4406 * Start in.mpathd if it's not already running. 4407 */ 4408 static void 4409 start_ipmp_daemon(void) 4410 { 4411 int retval; 4412 ipmp_handle_t ipmp_handle; 4413 4414 /* 4415 * Ping in.mpathd to see if it's running already. 4416 */ 4417 if ((retval = ipmp_open(&ipmp_handle)) != IPMP_SUCCESS) { 4418 (void) fprintf(stderr, "ifconfig: cannot create IPMP handle: " 4419 "%s\n", ipmp_errmsg(retval)); 4420 return; 4421 } 4422 4423 retval = ipmp_ping_daemon(ipmp_handle); 4424 ipmp_close(ipmp_handle); 4425 4426 switch (retval) { 4427 case IPMP_ENOMPATHD: 4428 break; 4429 case IPMP_SUCCESS: 4430 return; 4431 default: 4432 (void) fprintf(stderr, "ifconfig: cannot ping in.mpathd: %s\n", 4433 ipmp_errmsg(retval)); 4434 break; 4435 } 4436 4437 /* 4438 * Start in.mpathd. Note that in.mpathd will handle multiple 4439 * incarnations (ipmp_ping_daemon() is just an optimization) so we 4440 * don't need to worry about racing with another ifconfig process. 4441 */ 4442 switch (fork()) { 4443 case -1: 4444 Perror0_exit("start_ipmp_daemon: fork"); 4445 /* NOTREACHED */ 4446 case 0: 4447 (void) execl(MPATHD_PATH, MPATHD_PATH, NULL); 4448 _exit(1); 4449 /* NOTREACHED */ 4450 default: 4451 break; 4452 } 4453 } 4454 4455 /* 4456 * Bring the address named by `ifaddrp' up or down. Doesn't trust any mutable 4457 * values in ia_flags since they may be stale. 4458 */ 4459 static boolean_t 4460 ifaddr_op(ifaddrlistx_t *ifaddrp, boolean_t up) 4461 { 4462 struct lifreq lifrl; /* Local lifreq struct */ 4463 int fd = (ifaddrp->ia_flags & IFF_IPV4) ? s4 : s6; 4464 4465 (void) memset(&lifrl, 0, sizeof (lifrl)); 4466 (void) strlcpy(lifrl.lifr_name, ifaddrp->ia_name, LIFNAMSIZ); 4467 if (ioctl(fd, SIOCGLIFFLAGS, &lifrl) == -1) 4468 return (_B_FALSE); 4469 4470 if (up) { 4471 lifrl.lifr_flags |= IFF_UP; 4472 } else { 4473 /* 4474 * If we've been asked to bring down an IFF_DUPLICATE address, 4475 * then get the address and set it. This will cause IP to 4476 * clear IFF_DUPLICATE and stop the automatic recovery timer. 4477 */ 4478 if (lifrl.lifr_flags & IFF_DUPLICATE) { 4479 return (ioctl(fd, SIOCGLIFADDR, &lifrl) != -1 && 4480 ioctl(fd, SIOCSLIFADDR, &lifrl) != -1); 4481 } 4482 lifrl.lifr_flags &= ~IFF_UP; 4483 } 4484 return (ioctl(fd, SIOCSLIFFLAGS, &lifrl) == 0); 4485 } 4486 4487 static boolean_t 4488 ifaddr_up(ifaddrlistx_t *ifaddrp) 4489 { 4490 return (ifaddr_op(ifaddrp, _B_TRUE)); 4491 } 4492 4493 static boolean_t 4494 ifaddr_down(ifaddrlistx_t *ifaddrp) 4495 { 4496 return (ifaddr_op(ifaddrp, _B_FALSE)); 4497 } 4498 4499 void 4500 Perror0(const char *cmd) 4501 { 4502 Perror2(cmd, lifr.lifr_name); 4503 } 4504 4505 void 4506 Perror0_exit(const char *cmd) 4507 { 4508 Perror0(cmd); 4509 exit(1); 4510 /* NOTREACHED */ 4511 } 4512 4513 void 4514 Perror2(const char *cmd, const char *str) 4515 { 4516 int error = errno; 4517 4518 (void) fprintf(stderr, "ifconfig: %s: ", cmd); 4519 4520 switch (error) { 4521 case ENXIO: 4522 (void) fprintf(stderr, "%s: no such interface\n", str); 4523 break; 4524 case EPERM: 4525 (void) fprintf(stderr, "%s: permission denied\n", str); 4526 break; 4527 case EEXIST: 4528 (void) fprintf(stderr, "%s: already exists\n", str); 4529 break; 4530 default: 4531 errno = error; 4532 perror(str); 4533 } 4534 } 4535 4536 /* 4537 * Print out error message (Perror2()) and exit 4538 */ 4539 void 4540 Perror2_exit(const char *cmd, const char *str) 4541 { 4542 Perror2(cmd, str); 4543 exit(1); 4544 /* NOTREACHED */ 4545 } 4546 4547 void 4548 Perrdlpi(const char *cmd, const char *linkname, int err) 4549 { 4550 (void) fprintf(stderr, "ifconfig: %s \"%s\": %s\n", cmd, 4551 linkname, dlpi_strerror(err)); 4552 } 4553 4554 /* 4555 * Print out error message (Perrdlpi()) and exit 4556 */ 4557 void 4558 Perrdlpi_exit(const char *cmd, const char *linkname, int err) 4559 { 4560 Perrdlpi(cmd, linkname, err); 4561 exit(1); 4562 } 4563 4564 /* 4565 * If the last argument is non-NULL allow a <addr>/<n> syntax and 4566 * pass out <n> in *plenp. 4567 * If <n> doesn't parse return BAD_ADDR as *plenp. 4568 * If no /<n> is present return NO_PREFIX as *plenp. 4569 */ 4570 static void 4571 in_getaddr(char *s, struct sockaddr *saddr, int *plenp) 4572 { 4573 /* LINTED: alignment */ 4574 struct sockaddr_in *sin = (struct sockaddr_in *)saddr; 4575 struct hostent *hp; 4576 struct netent *np; 4577 char str[BUFSIZ]; 4578 int error_num; 4579 4580 (void) strncpy(str, s, sizeof (str)); 4581 4582 /* 4583 * Look for '/'<n> is plenp 4584 */ 4585 if (plenp != NULL) { 4586 char *cp; 4587 4588 *plenp = in_getprefixlen(str, _B_TRUE, IP_ABITS); 4589 if (*plenp == BAD_ADDR) 4590 return; 4591 cp = strchr(str, '/'); 4592 if (cp != NULL) 4593 *cp = '\0'; 4594 } else if (strchr(str, '/') != NULL) { 4595 (void) fprintf(stderr, "ifconfig: %s: unexpected '/'\n", str); 4596 exit(1); 4597 } 4598 4599 (void) memset(sin, 0, sizeof (*sin)); 4600 4601 /* 4602 * Try to catch attempts to set the broadcast address to all 1's. 4603 */ 4604 if (strcmp(str, "255.255.255.255") == 0 || 4605 (strtoul(str, (char **)NULL, 0) == 0xffffffffUL)) { 4606 sin->sin_family = AF_INET; 4607 sin->sin_addr.s_addr = 0xffffffff; 4608 return; 4609 } 4610 4611 hp = getipnodebyname(str, AF_INET, 0, &error_num); 4612 if (hp) { 4613 sin->sin_family = hp->h_addrtype; 4614 (void) memcpy(&sin->sin_addr, hp->h_addr, hp->h_length); 4615 freehostent(hp); 4616 return; 4617 } 4618 np = getnetbyname(str); 4619 if (np) { 4620 sin->sin_family = np->n_addrtype; 4621 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); 4622 return; 4623 } 4624 if (error_num == TRY_AGAIN) { 4625 (void) fprintf(stderr, "ifconfig: %s: bad address " 4626 "(try again later)\n", s); 4627 } else { 4628 (void) fprintf(stderr, "ifconfig: %s: bad address\n", s); 4629 } 4630 exit(1); 4631 } 4632 4633 /* 4634 * If the last argument is non-NULL allow a <addr>/<n> syntax and 4635 * pass out <n> in *plenp. 4636 * If <n> doesn't parse return BAD_ADDR as *plenp. 4637 * If no /<n> is present return NO_PREFIX as *plenp. 4638 */ 4639 static void 4640 in6_getaddr(char *s, struct sockaddr *saddr, int *plenp) 4641 { 4642 /* LINTED: alignment */ 4643 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)saddr; 4644 struct hostent *hp; 4645 char str[BUFSIZ]; 4646 int error_num; 4647 4648 (void) strncpy(str, s, sizeof (str)); 4649 4650 /* 4651 * Look for '/'<n> is plenp 4652 */ 4653 if (plenp != NULL) { 4654 char *cp; 4655 4656 *plenp = in_getprefixlen(str, _B_TRUE, IPV6_ABITS); 4657 if (*plenp == BAD_ADDR) 4658 return; 4659 cp = strchr(str, '/'); 4660 if (cp != NULL) 4661 *cp = '\0'; 4662 } else if (strchr(str, '/') != NULL) { 4663 (void) fprintf(stderr, "ifconfig: %s: unexpected '/'\n", str); 4664 exit(1); 4665 } 4666 4667 (void) memset(sin6, 0, sizeof (*sin6)); 4668 4669 hp = getipnodebyname(str, AF_INET6, 0, &error_num); 4670 if (hp) { 4671 sin6->sin6_family = hp->h_addrtype; 4672 (void) memcpy(&sin6->sin6_addr, hp->h_addr, hp->h_length); 4673 freehostent(hp); 4674 return; 4675 } 4676 if (error_num == TRY_AGAIN) { 4677 (void) fprintf(stderr, "ifconfig: %s: bad address " 4678 "(try again later)\n", s); 4679 } else { 4680 (void) fprintf(stderr, "ifconfig: %s: bad address\n", s); 4681 } 4682 exit(1); 4683 } 4684 4685 /* 4686 * If "slash" is zero this parses the whole string as 4687 * an integer. With "slash" non zero it parses the tail part as an integer. 4688 * 4689 * If it is not a valid integer this returns BAD_ADDR. 4690 * If there is /<n> present this returns NO_PREFIX. 4691 */ 4692 static int 4693 in_getprefixlen(char *addr, boolean_t slash, int max_plen) 4694 { 4695 int prefixlen; 4696 char *str, *end; 4697 4698 if (slash) { 4699 str = strchr(addr, '/'); 4700 if (str == NULL) 4701 return (NO_PREFIX); 4702 str++; 4703 } else 4704 str = addr; 4705 4706 prefixlen = strtol(str, &end, 10); 4707 if (prefixlen < 0) 4708 return (BAD_ADDR); 4709 if (str == end) 4710 return (BAD_ADDR); 4711 if (max_plen != 0 && max_plen < prefixlen) 4712 return (BAD_ADDR); 4713 return (prefixlen); 4714 } 4715 4716 /* 4717 * Convert a prefix length to a mask. 4718 * Returns 1 if ok. 0 otherwise. 4719 * Assumes the mask array is zero'ed by the caller. 4720 */ 4721 static boolean_t 4722 in_prefixlentomask(int prefixlen, int maxlen, uchar_t *mask) 4723 { 4724 if (prefixlen < 0 || prefixlen > maxlen) 4725 return (0); 4726 4727 while (prefixlen > 0) { 4728 if (prefixlen >= 8) { 4729 *mask++ = 0xFF; 4730 prefixlen -= 8; 4731 continue; 4732 } 4733 *mask |= 1 << (8 - prefixlen); 4734 prefixlen--; 4735 } 4736 return (1); 4737 } 4738 4739 static void 4740 print_flags(uint64_t flags) 4741 { 4742 boolean_t first = _B_TRUE; 4743 int cnt, i; 4744 4745 (void) printf("flags=%llx", flags); 4746 cnt = sizeof (if_flags_tbl) / sizeof (if_flags_t); 4747 for (i = 0; i < cnt; i++) { 4748 if (flags & if_flags_tbl[i].iff_value) { 4749 if (first) { 4750 (void) printf("<"); 4751 first = _B_FALSE; 4752 } else { 4753 /* 4754 * It has to be here and not with the 4755 * printf below because for the last one, 4756 * we don't want a comma before the ">". 4757 */ 4758 (void) printf(","); 4759 } 4760 (void) printf("%s", if_flags_tbl[i].iff_name); 4761 } 4762 } 4763 if (!first) 4764 (void) printf(">"); 4765 } 4766 4767 static void 4768 print_config_flags(int af, uint64_t flags) 4769 { 4770 if_config_cmd_t *cmdp; 4771 4772 for (cmdp = if_config_cmd_tbl; cmdp->iff_flag != 0; cmdp++) { 4773 if ((flags & cmdp->iff_flag) && 4774 (cmdp->iff_af == AF_UNSPEC || cmdp->iff_af == af)) { 4775 (void) printf("%s ", cmdp->iff_name); 4776 } 4777 } 4778 } 4779 4780 /* 4781 * Use the configured directory lookup mechanism (e.g. files/NIS/NIS+/...) 4782 * to find the network mask. Returns true if we found one to set. 4783 * 4784 * The parameter addr_set controls whether we should get the address of 4785 * the working interface for the netmask query. If addr_set is true, 4786 * we will use the address provided. Otherwise, we will find the working 4787 * interface's address and use it instead. 4788 */ 4789 static boolean_t 4790 in_getmask(struct sockaddr_in *saddr, boolean_t addr_set) 4791 { 4792 struct sockaddr_in ifaddr; 4793 4794 /* 4795 * Read the address from the interface if it is not passed in. 4796 */ 4797 if (!addr_set) { 4798 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4799 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 4800 if (errno != EADDRNOTAVAIL) { 4801 (void) fprintf(stderr, "Need net number for " 4802 "mask\n"); 4803 } 4804 return (_B_FALSE); 4805 } 4806 ifaddr = *((struct sockaddr_in *)&lifr.lifr_addr); 4807 } else { 4808 ifaddr.sin_addr = saddr->sin_addr; 4809 } 4810 if (getnetmaskbyaddr(ifaddr.sin_addr, &saddr->sin_addr) == 0) { 4811 saddr->sin_family = AF_INET; 4812 return (_B_TRUE); 4813 } 4814 return (_B_FALSE); 4815 } 4816 4817 static int 4818 lifnum(const char *ifname) 4819 { 4820 const char *cp; 4821 4822 if ((cp = strchr(ifname, ':')) == NULL) 4823 return (0); 4824 else 4825 return (atoi(cp + 1)); 4826 } 4827 4828 static int 4829 strioctl(int s, int cmd, void *buf, int buflen) 4830 { 4831 struct strioctl ioc; 4832 4833 (void) memset(&ioc, 0, sizeof (ioc)); 4834 ioc.ic_cmd = cmd; 4835 ioc.ic_timout = 0; 4836 ioc.ic_len = buflen; 4837 ioc.ic_dp = buf; 4838 return (ioctl(s, I_STR, (char *)&ioc)); 4839 } 4840 4841 static void 4842 add_ni(const char *name) 4843 { 4844 ni_t **pp; 4845 ni_t *p; 4846 4847 for (pp = &ni_list; (p = *pp) != NULL; pp = &(p->ni_next)) { 4848 if (strcmp(p->ni_name, name) == 0) { 4849 if (debug > 2) 4850 (void) fprintf(stderr, "'%s' is a duplicate\n", 4851 name); 4852 return; 4853 } 4854 } 4855 4856 if (debug > 2) 4857 (void) fprintf(stderr, "adding '%s'\n", 4858 name); 4859 4860 if ((p = malloc(sizeof (ni_t))) == NULL) 4861 return; 4862 4863 (void) strlcpy(p->ni_name, name, sizeof (p->ni_name)); 4864 p->ni_next = NULL; 4865 4866 *pp = p; 4867 num_ni++; 4868 } 4869 4870 /* ARGSUSED2 */ 4871 static boolean_t 4872 ni_entry(const char *linkname, void *arg) 4873 { 4874 dlpi_handle_t dh; 4875 dladm_handle_t dld_handle; 4876 datalink_class_t class; 4877 4878 if (dladm_open(&dld_handle) != DLADM_STATUS_OK) 4879 return (_B_FALSE); 4880 4881 (void) dladm_name2info(dld_handle, linkname, NULL, NULL, &class, NULL); 4882 dladm_close(dld_handle); 4883 4884 if (class == DATALINK_CLASS_ETHERSTUB) 4885 return (_B_FALSE); 4886 if (dlpi_open(linkname, &dh, 0) != DLPI_SUCCESS) 4887 return (_B_FALSE); 4888 4889 add_ni(linkname); 4890 4891 dlpi_close(dh); 4892 return (_B_FALSE); 4893 } 4894 4895 /* 4896 * dhcp-related routines 4897 */ 4898 4899 static int 4900 setifdhcp(const char *caller, const char *ifname, int argc, char *argv[]) 4901 { 4902 dhcp_ipc_request_t *request; 4903 dhcp_ipc_reply_t *reply = NULL; 4904 int timeout = DHCP_IPC_WAIT_DEFAULT; 4905 dhcp_ipc_type_t type = DHCP_START; 4906 int error; 4907 boolean_t is_primary = _B_FALSE; 4908 boolean_t started = _B_FALSE; 4909 4910 for (argv++; --argc > 0; argv++) { 4911 4912 if (strcmp(*argv, "primary") == 0) { 4913 is_primary = _B_TRUE; 4914 continue; 4915 } 4916 4917 if (strcmp(*argv, "wait") == 0) { 4918 if (--argc <= 0) { 4919 usage(); 4920 return (DHCP_EXIT_BADARGS); 4921 } 4922 argv++; 4923 4924 if (strcmp(*argv, "forever") == 0) { 4925 timeout = DHCP_IPC_WAIT_FOREVER; 4926 continue; 4927 } 4928 4929 if (sscanf(*argv, "%d", &timeout) != 1) { 4930 usage(); 4931 return (DHCP_EXIT_BADARGS); 4932 } 4933 4934 if (timeout < 0) { 4935 usage(); 4936 return (DHCP_EXIT_BADARGS); 4937 } 4938 continue; 4939 } 4940 4941 type = dhcp_string_to_request(*argv); 4942 if (type == -1) { 4943 usage(); 4944 return (DHCP_EXIT_BADARGS); 4945 } 4946 } 4947 4948 /* 4949 * Only try to start agent on start or inform; in all other cases it 4950 * has to already be running for anything to make sense. 4951 */ 4952 if (type == DHCP_START || type == DHCP_INFORM) { 4953 if (dhcp_start_agent(DHCP_IPC_MAX_WAIT) == -1) { 4954 (void) fprintf(stderr, "%s: unable to start %s\n", 4955 caller, DHCP_AGENT_PATH); 4956 return (DHCP_EXIT_FAILURE); 4957 } 4958 started = _B_TRUE; 4959 } 4960 4961 if (is_primary) 4962 type |= DHCP_PRIMARY; 4963 4964 if (af != AF_INET) 4965 type |= DHCP_V6; 4966 4967 request = dhcp_ipc_alloc_request(type, ifname, NULL, 0, DHCP_TYPE_NONE); 4968 if (request == NULL) { 4969 (void) fprintf(stderr, "%s: out of memory\n", caller); 4970 return (DHCP_EXIT_SYSTEM); 4971 } 4972 4973 error = dhcp_ipc_make_request(request, &reply, timeout); 4974 if (error != 0) { 4975 free(request); 4976 /* 4977 * Re-map connect error to not under control if we didn't try a 4978 * start operation, as this has to be true and results in a 4979 * clearer message, not to mention preserving compatibility 4980 * with the days when we always started dhcpagent for every 4981 * request. 4982 */ 4983 if (error == DHCP_IPC_E_CONNECT && !started) 4984 error = DHCP_IPC_E_UNKIF; 4985 (void) fprintf(stderr, "%s: %s: %s\n", caller, ifname, 4986 dhcp_ipc_strerror(error)); 4987 return (DHCP_EXIT_FAILURE); 4988 } 4989 4990 error = reply->return_code; 4991 if (error != 0) { 4992 free(request); 4993 free(reply); 4994 4995 if (error == DHCP_IPC_E_TIMEOUT && timeout == 0) 4996 return (DHCP_EXIT_SUCCESS); 4997 4998 (void) fprintf(stderr, "%s: %s: %s\n", caller, ifname, 4999 dhcp_ipc_strerror(error)); 5000 5001 if (error == DHCP_IPC_E_TIMEOUT) 5002 return (DHCP_EXIT_TIMEOUT); 5003 else 5004 return (DHCP_EXIT_IF_FAILURE); 5005 } 5006 5007 if (DHCP_IPC_CMD(type) == DHCP_STATUS) { 5008 (void) printf("%s", dhcp_status_hdr_string()); 5009 (void) printf("%s", dhcp_status_reply_to_string(reply)); 5010 } 5011 5012 free(request); 5013 free(reply); 5014 return (DHCP_EXIT_SUCCESS); 5015 } 5016 5017 static void 5018 usage(void) 5019 { 5020 (void) fprintf(stderr, 5021 "usage: ifconfig <interface> | -a[ 4 | 6 | D ][ u | d ][ Z ]\n"); 5022 5023 (void) fprintf(stderr, "%s", 5024 "\t[ <addr_family> ]\n" 5025 "\t[ <address>[/<prefix_length>] [ <dest_address> ] ]\n" 5026 "\t[ set [ <address>][/<prefix_length>] ]" 5027 " [ <address>/<prefix_length>] ]\n" 5028 "\t[ destination <dest_address> ]\n" 5029 "\t[ addif <address>[/<prefix_length>]" 5030 " [ <dest_address> ] ]\n" 5031 "\t[ removeif <address>[/<prefix_length>] ]\n" 5032 "\t[ arp | -arp ]\n" 5033 "\t[ auto-revarp ]\n" 5034 "\t[ broadcast <broad_addr> ]\n" 5035 "\t[ index <if_index> ]\n" 5036 "\t[ metric <n> ] [ mtu <n> ]\n" 5037 "\t[ netmask <mask> ]\n" 5038 "\t[ plumb ] [ unplumb ]\n" 5039 "\t[ preferred | -preferred ]\n" 5040 "\t[ private | -private ]\n" 5041 "\t[ local | -local ]\n" 5042 "\t[ router | -router ]\n" 5043 "\t[ subnet <subnet_address>]\n" 5044 "\t[ trailers | -trailers ]\n" 5045 "\t[ token <address>/<prefix_length> ]\n" 5046 "\t[ tsrc <tunnel_src_address> ]\n" 5047 "\t[ tdst <tunnel_dest_address> ]\n" 5048 "\t[ auth_algs <tunnel_AH_authentication_algorithm> ]\n" 5049 "\t[ encr_algs <tunnel_ESP_encryption_algorithm> ]\n" 5050 "\t[ encr_auth_algs <tunnel_ESP_authentication_algorithm> ]\n" 5051 "\t[ up ] [ down ]\n" 5052 "\t[ xmit | -xmit ]\n" 5053 "\t[ modlist ]\n" 5054 "\t[ modinsert <module_name@position> ]\n" 5055 "\t[ modremove <module_name@position> ]\n" 5056 "\t[ ipmp ]\n" 5057 "\t[ group <groupname>] | [ group \"\"]\n" 5058 "\t[ deprecated | -deprecated ]\n" 5059 "\t[ standby | -standby ]\n" 5060 "\t[ failover | -failover ]\n" 5061 "\t[ zone <zonename> | -zone ]\n" 5062 "\t[ usesrc <interface> ]\n" 5063 "\t[ all-zones ]\n"); 5064 5065 (void) fprintf(stderr, "or\n"); 5066 (void) fprintf(stderr, 5067 "\tifconfig <interface> | -a[ 4 | 6 | D ] [ u | d ]\n"); 5068 5069 (void) fprintf(stderr, "%s", "\tauto-dhcp | dhcp\n" 5070 "\t[ wait <time> | forever ]\n\t[ primary ]\n" 5071 "\tstart | drop | ping | release | status | inform\n"); 5072 } 5073