1 /* 2 * Copyright 2006 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 #pragma ident "%Z%%M% %I% %E% SMI" 12 13 #include "defs.h" 14 #include "strings.h" 15 #include "ifconfig.h" 16 #include <compat.h> 17 18 #include <sys/dlpi.h> 19 #include <libdlpi.h> 20 21 #include <inet/ip.h> 22 23 #define LOOPBACK_IF "lo0" 24 #define NONE_STR "none" 25 #define ARP_MOD_NAME "arp" 26 #define TUN_NAME "tun" 27 #define ATUN_NAME "atun" 28 #define TUN6TO4_NAME "6to4tun" 29 30 typedef struct if_flags { 31 uint64_t iff_value; 32 char *iff_name; 33 } if_flags_t; 34 35 static if_flags_t if_flags_tbl[] = { 36 { IFF_UP, "UP" }, 37 { IFF_BROADCAST, "BROADCAST" }, 38 { IFF_DEBUG, "DEBUG" }, 39 { IFF_LOOPBACK, "LOOPBACK" }, 40 { IFF_POINTOPOINT, "POINTOPOINT" }, 41 { IFF_NOTRAILERS, "NOTRAILERS" }, 42 { IFF_RUNNING, "RUNNING" }, 43 { IFF_NOARP, "NOARP" }, 44 { IFF_PROMISC, "PROMISC" }, 45 { IFF_ALLMULTI, "ALLMULTI" }, 46 { IFF_INTELLIGENT, "INTELLIGENT" }, 47 { IFF_MULTICAST, "MULTICAST" }, 48 { IFF_MULTI_BCAST, "MULTI_BCAST" }, 49 { IFF_UNNUMBERED, "UNNUMBERED" }, 50 { IFF_DHCPRUNNING, "DHCP" }, 51 { IFF_PRIVATE, "PRIVATE" }, 52 { IFF_NOXMIT, "NOXMIT" }, 53 { IFF_NOLOCAL, "NOLOCAL" }, 54 { IFF_DEPRECATED, "DEPRECATED" }, 55 { IFF_ADDRCONF, "ADDRCONF" }, 56 { IFF_ROUTER, "ROUTER" }, 57 { IFF_NONUD, "NONUD" }, 58 { IFF_ANYCAST, "ANYCAST" }, 59 { IFF_NORTEXCH, "NORTEXCH" }, 60 { IFF_IPV4, "IPv4" }, 61 { IFF_IPV6, "IPv6" }, 62 { IFF_MIPRUNNING, "MIP" }, 63 { IFF_NOFAILOVER, "NOFAILOVER" }, 64 { IFF_FAILED, "FAILED" }, 65 { IFF_STANDBY, "STANDBY" }, 66 { IFF_INACTIVE, "INACTIVE" }, 67 { IFF_OFFLINE, "OFFLINE" }, 68 { IFF_XRESOLV, "XRESOLV" }, 69 { IFF_COS_ENABLED, "CoS" }, 70 { IFF_PREFERRED, "PREFERRED" }, 71 { IFF_TEMPORARY, "TEMPORARY" }, 72 { IFF_FIXEDMTU, "FIXEDMTU" }, 73 { IFF_VIRTUAL, "VIRTUAL" }, 74 { IFF_DUPLICATE, "DUPLICATE" } 75 }; 76 77 static struct lifreq lifr; 78 /* current interface name a particular function is accessing */ 79 static char name[LIFNAMSIZ]; 80 /* foreach interface saved name */ 81 static char origname[LIFNAMSIZ]; 82 static char savedname[LIFNAMSIZ]; /* For addif */ 83 static int setaddr; 84 85 /* 86 * Make sure the algorithm variables hold more than the sizeof an algorithm 87 * in PF_KEY. (For now, more than a uint8_t.) The NO_***_?ALG indicates that 88 * there was no algorithm requested, and in the ipsec_req that service should 89 * be disabled. (E.g. if ah_aalg remains NO_AH_AALG, then AH will be 90 * disabled on that tunnel.) 91 */ 92 #define NO_AH_AALG 256 93 #define NO_ESP_AALG 256 94 #define NO_ESP_EALG 256 95 96 /* 97 * iface_t 98 * used by setifether to create a list of interfaces to mark 99 * down-up when changing the ethernet address of an interface 100 */ 101 typedef struct iface { 102 struct lifreq lifr; 103 struct iface *next; /* pointer to the next list element */ 104 } iface_t; 105 106 static iface_t *logifs = NULL; /* list of logical interfaces */ 107 static iface_t *phyif = NULL; /* physical interface */ 108 109 int s; 110 int af = AF_INET; /* default address family */ 111 int debug = 0; 112 int all = 0; /* setifdhcp() needs to know this */ 113 int verbose = 0; 114 int v4compat = 0; /* Compatible printing format */ 115 116 /* 117 * Function prototypes for command functions. 118 */ 119 static int addif(char *arg, int64_t param); 120 static int inetplumb(char *arg, int64_t param); 121 static int inetunplumb(char *arg, int64_t param); 122 static int removeif(char *arg, int64_t param); 123 static int setdebugflag(char *arg, int64_t param); 124 static int setifaddr(char *arg, int64_t param); 125 static int setifbroadaddr(char *arg, int64_t param); 126 static int setifdstaddr(char *arg, int64_t param); 127 static int setifether(char *arg, int64_t param); 128 static int setifflags(char *arg, int64_t param); 129 static int setifindex(char *arg, int64_t param); 130 static int setifmetric(char *arg, int64_t param); 131 static int setifmtu(char *arg, int64_t param); 132 static int setifnetmask(char *arg, int64_t param); 133 static int setifprefixlen(char *arg, int64_t param); 134 static int setifrevarp(char *arg, int64_t param); 135 static int setifsubnet(char *arg, int64_t param); 136 static int setiftdst(char *arg, int64_t param); 137 static int setiftoken(char *arg, int64_t param); 138 static int setiftsrc(char *arg, int64_t param); 139 static int setverboseflag(char *arg, int64_t param); 140 static int set_tun_ah_alg(char *arg, int64_t param); 141 static int set_tun_esp_auth_alg(char *arg, int64_t param); 142 static int set_tun_esp_encr_alg(char *arg, int64_t param); 143 static int modlist(char *arg, int64_t param); 144 static int modinsert(char *arg, int64_t param); 145 static int modremove(char *arg, int64_t param); 146 static int setifgroupname(char *arg, int64_t param); 147 static int configinfo(char *arg, int64_t param); 148 static void print_config_flags(uint64_t flags); 149 static void print_flags(uint64_t flags); 150 static void print_ifether(char *ifname); 151 static int set_tun_encap_limit(char *arg, int64_t param); 152 static int clr_tun_encap_limit(char *arg, int64_t param); 153 static int set_tun_hop_limit(char *arg, int64_t param); 154 static int setzone(char *arg, int64_t param); 155 static int setallzones(char *arg, int64_t param); 156 static int setifsrc(char *arg, int64_t param); 157 158 /* 159 * Address family specific function prototypes. 160 */ 161 static void in_getaddr(char *s, struct sockaddr *saddr, int *plenp); 162 static void in_status(int force, uint64_t flags); 163 static void in_configinfo(int force, uint64_t flags); 164 static void in6_getaddr(char *s, struct sockaddr *saddr, int *plenp); 165 static void in6_status(int force, uint64_t flags); 166 static void in6_configinfo(int force, uint64_t flags); 167 168 /* 169 * Misc support functions 170 */ 171 static int devfs_entry(di_node_t node, di_minor_t minor, void *arg); 172 static void foreachinterface(void (*func)(), int argc, char *argv[], 173 int af, int64_t onflags, int64_t offflags, 174 int64_t lifc_flags); 175 static void ifconfig(int argc, char *argv[], int af, struct lifreq *lifrp); 176 static boolean_t in_getmask(struct sockaddr_in *saddr, 177 boolean_t addr_set); 178 static int in_getprefixlen(char *addr, boolean_t slash, int plen); 179 static boolean_t in_prefixlentomask(int prefixlen, int maxlen, 180 uchar_t *mask); 181 static int settaddr(char *, int (*)(icfg_handle_t, 182 const struct sockaddr *, socklen_t)); 183 static void status(void); 184 static void ifstatus(const char *); 185 static void usage(void); 186 static int strioctl(int s, int cmd, char *buf, int buflen); 187 static int setifdhcp(const char *caller, const char *ifname, 188 int argc, char *argv[]); 189 static int ip_domux2fd(int *, int *, int *, int *); 190 static int ip_plink(int, int, int, int); 191 static int modop(char *arg, char op); 192 static int get_lun(char *); 193 static void selectifs(int argc, char *argv[], int af, 194 struct lifreq *lifrp); 195 static int updownifs(iface_t *ifs, int up); 196 197 #define max(a, b) ((a) < (b) ? (b) : (a)) 198 199 /* 200 * DHCP_EXIT_IF_FAILURE indicates that the operation failed, but if there 201 * are more interfaces to act on (i.e., ifconfig was invoked with -a), keep 202 * on going rather than exit with an error. 203 */ 204 205 #define DHCP_EXIT_IF_FAILURE -1 206 #define DHCP_IPC_MAX_WAIT 15 /* max seconds to wait to start agent */ 207 208 #define NEXTARG 0xffffff /* command takes an argument */ 209 #define OPTARG 0xfffffe /* command takes an optional argument */ 210 #define AF_ANY (-1) 211 212 /* Refer to the comments in ifconfig() on the netmask "hack" */ 213 #define NETMASK_CMD "netmask" 214 struct sockaddr_storage g_netmask; 215 enum { G_NETMASK_NIL, G_NETMASK_PENDING, G_NETMASK_SET } 216 g_netmask_set = G_NETMASK_NIL; 217 218 struct cmd { 219 char *c_name; 220 int64_t c_parameter; /* NEXTARG means next argv */ 221 int (*c_func)(char *, int64_t); 222 int c_abortonfail; /* don't continue parsing args */ 223 /* for the current interface */ 224 int c_af; /* address family restrictions */ 225 } cmds[] = { 226 { "up", IFF_UP, setifflags, 0, AF_ANY }, 227 { "down", -IFF_UP, setifflags, 0, AF_ANY }, 228 { "trailers", -IFF_NOTRAILERS, setifflags, 0, AF_ANY }, 229 { "-trailers", IFF_NOTRAILERS, setifflags, 0, AF_ANY }, 230 { "arp", -IFF_NOARP, setifflags, 0, AF_INET }, 231 { "-arp", IFF_NOARP, setifflags, 0, AF_INET }, 232 { "router", IFF_ROUTER, setifflags, 0, AF_ANY }, 233 { "-router", -IFF_ROUTER, setifflags, 0, AF_ANY }, 234 { "private", IFF_PRIVATE, setifflags, 0, AF_ANY }, 235 { "-private", -IFF_PRIVATE, setifflags, 0, AF_ANY }, 236 { "xmit", -IFF_NOXMIT, setifflags, 0, AF_ANY }, 237 { "-xmit", IFF_NOXMIT, setifflags, 0, AF_ANY }, 238 { "-nud", IFF_NONUD, setifflags, 0, AF_INET6 }, 239 { "nud", -IFF_NONUD, setifflags, 0, AF_INET6 }, 240 { "anycast", IFF_ANYCAST, setifflags, 0, AF_ANY }, 241 { "-anycast", -IFF_ANYCAST, setifflags, 0, AF_ANY }, 242 { "local", -IFF_NOLOCAL, setifflags, 0, AF_ANY }, 243 { "-local", IFF_NOLOCAL, setifflags, 0, AF_ANY }, 244 { "deprecated", IFF_DEPRECATED, setifflags, 0, AF_ANY }, 245 { "-deprecated", -IFF_DEPRECATED, setifflags, 0, AF_ANY }, 246 { "preferred", IFF_PREFERRED, setifflags, 0, AF_INET6 }, 247 { "-preferred", -IFF_PREFERRED, setifflags, 0, AF_INET6 }, 248 { "debug", 0, setdebugflag, 0, AF_ANY }, 249 { "verbose", 0, setverboseflag, 0, AF_ANY }, 250 { NETMASK_CMD, NEXTARG, setifnetmask, 0, AF_INET }, 251 { "metric", NEXTARG, setifmetric, 0, AF_ANY }, 252 { "mtu", NEXTARG, setifmtu, 0, AF_ANY }, 253 { "index", NEXTARG, setifindex, 0, AF_ANY }, 254 { "broadcast", NEXTARG, setifbroadaddr, 0, AF_INET }, 255 { "auto-revarp", 0, setifrevarp, 1, AF_INET }, 256 { "plumb", 0, inetplumb, 1, AF_ANY }, 257 { "unplumb", 0, inetunplumb, 0, AF_ANY }, 258 { "subnet", NEXTARG, setifsubnet, 0, AF_ANY }, 259 { "token", NEXTARG, setiftoken, 0, AF_INET6 }, 260 { "tsrc", NEXTARG, setiftsrc, 0, AF_ANY }, 261 { "tdst", NEXTARG, setiftdst, 0, AF_ANY }, 262 { "encr_auth_algs", NEXTARG, set_tun_esp_auth_alg, 0, AF_ANY }, 263 { "encr_algs", NEXTARG, set_tun_esp_encr_alg, 0, AF_ANY }, 264 { "auth_algs", NEXTARG, set_tun_ah_alg, 0, AF_ANY }, 265 { "addif", NEXTARG, addif, 1, AF_ANY }, 266 { "removeif", NEXTARG, removeif, 1, AF_ANY }, 267 { "modlist", 0, modlist, 1, AF_ANY }, 268 { "modinsert", NEXTARG, modinsert, 1, AF_ANY }, 269 { "modremove", NEXTARG, modremove, 1, AF_ANY }, 270 { "failover", -IFF_NOFAILOVER, setifflags, 1, AF_ANY }, 271 { "-failover", IFF_NOFAILOVER, setifflags, 1, AF_ANY }, 272 { "standby", IFF_STANDBY, setifflags, 1, AF_ANY }, 273 { "-standby", -IFF_STANDBY, setifflags, 1, AF_ANY }, 274 { "failed", IFF_FAILED, setifflags, 1, AF_ANY }, 275 { "-failed", -IFF_FAILED, setifflags, 1, AF_ANY }, 276 { "group", NEXTARG, setifgroupname, 1, AF_ANY }, 277 { "configinfo", 0, configinfo, 1, AF_ANY }, 278 { "encaplimit", NEXTARG, set_tun_encap_limit, 0, AF_ANY }, 279 { "-encaplimit", 0, clr_tun_encap_limit, 0, AF_ANY }, 280 { "thoplimit", NEXTARG, set_tun_hop_limit, 0, AF_ANY }, 281 { "set", NEXTARG, setifaddr, 0, AF_ANY }, 282 { "destination", NEXTARG, setifdstaddr, 0, AF_ANY }, 283 { "zone", NEXTARG, setzone, 0, AF_ANY }, 284 { "-zone", 0, setzone, 0, AF_ANY }, 285 { "all-zones", 0, setallzones, 0, AF_ANY }, 286 { "ether", OPTARG, setifether, 0, AF_ANY }, 287 { "usesrc", NEXTARG, setifsrc, 0, AF_ANY }, 288 { 0, 0, setifaddr, 0, AF_ANY }, 289 { 0, 0, setifdstaddr, 0, AF_ANY }, 290 { 0, 0, 0, 0, 0 }, 291 }; 292 293 294 typedef struct if_config_cmd { 295 uint64_t iff_flag; 296 char *iff_name; 297 } if_config_cmd_t; 298 299 static if_config_cmd_t if_config_cmd_tbl[] = { 300 { IFF_UP, "up" }, 301 { IFF_NOTRAILERS, "-trailers" }, 302 { IFF_PRIVATE, "private" }, 303 { IFF_NOXMIT, "-xmit" }, 304 { IFF_ANYCAST, "anycast" }, 305 { IFF_NOLOCAL, "-local" }, 306 { IFF_DEPRECATED, "deprecated" }, 307 { IFF_NOFAILOVER, "-failover" }, 308 { IFF_STANDBY, "standby" }, 309 { IFF_FAILED, "failed" }, 310 { IFF_PREFERRED, "preferred" }, 311 { 0, 0 }, 312 }; 313 314 typedef struct ni { 315 char ni_name[LIFNAMSIZ]; 316 struct ni *ni_next; 317 } ni_t; 318 319 static ni_t *ni_list = NULL; 320 static int num_ni = 0; 321 322 /* End defines and structure definitions for ifconfig -a plumb */ 323 324 /* Known address families */ 325 struct afswtch { 326 char *af_name; 327 short af_af; 328 void (*af_status)(); 329 void (*af_getaddr)(); 330 void (*af_configinfo)(); 331 } afs[] = { 332 { "inet", AF_INET, in_status, in_getaddr, in_configinfo }, 333 { "inet6", AF_INET6, in6_status, in6_getaddr, in6_configinfo }, 334 { 0, 0, 0, 0, 0 } 335 }; 336 337 #define SOCKET_AF(af) (((af) == AF_UNSPEC) ? AF_INET : (af)) 338 339 struct afswtch *afp; /* the address family being set or asked about */ 340 341 int 342 main(int argc, char *argv[]) 343 { 344 /* Include IFF_NOXMIT, IFF_TEMPORARY and all zone interfaces */ 345 int64_t lifc_flags = LIFC_NOXMIT | LIFC_TEMPORARY | LIFC_ALLZONES; 346 char *default_ip_str; 347 348 if (argc < 2) { 349 usage(); 350 exit(1); 351 } 352 argc--, argv++; 353 if (strlen(*argv) > sizeof (name) - 1) { 354 (void) fprintf(stderr, "%s: interface name too long\n", *argv); 355 exit(1); 356 } 357 (void) strncpy(name, *argv, sizeof (name)); 358 name[sizeof (name) - 1] = '\0'; 359 (void) strncpy(origname, name, sizeof (origname)); /* For addif */ 360 default_ip_str = NULL; 361 v4compat = get_compat_flag(&default_ip_str); 362 if (v4compat == DEFAULT_PROT_BAD_VALUE) { 363 (void) fprintf(stderr, 364 "ifconfig: %s: Bad value for %s in %s\n", default_ip_str, 365 DEFAULT_IP, INET_DEFAULT_FILE); 366 free(default_ip_str); 367 exit(2); 368 } 369 free(default_ip_str); 370 argc--, argv++; 371 if (argc > 0) { 372 struct afswtch *myafp; 373 374 for (myafp = afp = afs; myafp->af_name; myafp++) { 375 if (strcmp(myafp->af_name, *argv) == 0) { 376 afp = myafp; argc--; argv++; 377 break; 378 } 379 } 380 af = lifr.lifr_addr.ss_family = afp->af_af; 381 if (af == AF_INET6) { 382 v4compat = 0; 383 } 384 } 385 386 s = socket(SOCKET_AF(af), SOCK_DGRAM, 0); 387 if (s < 0) { 388 Perror0_exit("socket"); 389 } 390 391 /* 392 * Special interface names is any combination of these flags. 393 * Note that due to the ifconfig syntax they have to be combined 394 * as a single '-' option. 395 * -a All interfaces 396 * -u "up" interfaces 397 * -d "down" interfaces 398 * -D Interfaces not controlled by DHCP 399 * -4 IPv4 interfaces 400 * -6 IPv6 interfaces 401 * -X Turn on debug (not documented) 402 * -v Turn on verbose 403 * -Z Only interfaces in caller's zone 404 */ 405 406 if (name[0] == '-') { 407 /* One or more options */ 408 int64_t onflags = 0; 409 int64_t offflags = 0; 410 int c; 411 char *av[2] = { "ifconfig", name }; 412 413 while ((c = getopt(2, av, "audDXZ46v")) != -1) { 414 switch ((char)c) { 415 case 'a': 416 all = 1; 417 break; 418 case 'u': 419 onflags |= IFF_UP; 420 break; 421 case 'd': 422 offflags |= IFF_UP; 423 break; 424 case 'D': 425 offflags |= IFF_DHCPRUNNING; 426 break; 427 case 'X': 428 debug += 3; 429 break; 430 case 'Z': 431 lifc_flags &= ~LIFC_ALLZONES; 432 break; 433 case '4': 434 /* 435 * -4 is not a compatable flag, therefore 436 * we assume they want v4compat turned off 437 */ 438 v4compat = 0; 439 onflags |= IFF_IPV4; 440 break; 441 case '6': 442 /* 443 * If they want IPv6, well then we'll assume 444 * they don't want IPv4 compat 445 */ 446 v4compat = 0; 447 onflags |= IFF_IPV6; 448 break; 449 case 'v': 450 verbose = 1; 451 break; 452 case '?': 453 usage(); 454 exit(1); 455 } 456 } 457 if (!all) { 458 (void) fprintf(stderr, 459 "ifconfig: %s: no such interface\n", 460 name); 461 exit(1); 462 } 463 foreachinterface(ifconfig, argc, argv, af, onflags, offflags, 464 lifc_flags); 465 } else { 466 ifconfig(argc, argv, af, (struct lifreq *)NULL); 467 } 468 return (0); 469 } 470 471 /* 472 * For each interface, call (*func)(argc, argv, af, lifrp). 473 * Only call function if onflags and offflags are set or clear, respectively, 474 * in the interfaces flags field. 475 */ 476 static void 477 foreachinterface(void (*func)(), int argc, char *argv[], int af, 478 int64_t onflags, int64_t offflags, int64_t lifc_flags) 479 { 480 int n; 481 char *buf; 482 struct lifnum lifn; 483 struct lifconf lifc; 484 struct lifreq *lifrp; 485 struct lifreq lifrl; /* Local lifreq struct */ 486 int numifs; 487 unsigned bufsize; 488 ni_t *nip; 489 int plumball = 0; 490 int save_af = af; 491 492 /* 493 * Special case: 494 * ifconfig -a plumb should find all network interfaces 495 * in the machine by traversing the devinfo tree. 496 * Also, there is no need to SIOCGLIF* ioctls, since 497 * those interfaces have already been plumbed 498 */ 499 if (argc > 0 && (strcmp(*argv, "plumb") == 0)) { 500 /* 501 * Look through the kernel's devinfo tree for 502 * network devices 503 */ 504 di_node_t root; 505 506 /* 507 * DINFOCACHE is equivalent to DINFOSUBTREE | DINFOMINOR | 508 * DINFOPROP | DINFOFORCE. 509 */ 510 if ((root = di_init("/", DINFOCACHE)) == DI_NODE_NIL) { 511 (void) fprintf(stderr, "ifconfig: di_init failed;" 512 " check the devinfo driver.\n"); 513 exit(1); 514 } 515 516 (void) di_walk_minor(root, DDI_NT_NET, DI_CHECK_ALIAS, NULL, 517 devfs_entry); 518 di_fini(root); 519 520 /* 521 * Now, translate the linked list into 522 * a struct lifreq buffer 523 */ 524 bufsize = num_ni * sizeof (struct lifreq); 525 if ((buf = malloc(bufsize)) == NULL) 526 Perror0_exit("foreachinterface: malloc failed"); 527 528 lifc.lifc_family = AF_UNSPEC; 529 lifc.lifc_flags = lifc_flags; 530 lifc.lifc_len = bufsize; 531 lifc.lifc_buf = buf; 532 533 for (n = 0, lifrp = lifc.lifc_req; n < num_ni; n++, lifrp++) { 534 nip = ni_list; 535 (void) strncpy(lifrp->lifr_name, nip->ni_name, 536 sizeof (lifr.lifr_name)); 537 ni_list = nip->ni_next; 538 free(nip); 539 } 540 541 plumball = 1; 542 } else { 543 lifn.lifn_family = AF_UNSPEC; 544 lifn.lifn_flags = lifc_flags; 545 if (ioctl(s, SIOCGLIFNUM, (char *)&lifn) < 0) { 546 Perror0_exit("Could not determine number" 547 " of interfaces"); 548 } 549 numifs = lifn.lifn_count; 550 if (debug) 551 (void) printf("ifconfig: %d interfaces\n", numifs); 552 553 bufsize = numifs * sizeof (struct lifreq); 554 if ((buf = malloc(bufsize)) == NULL) { 555 Perror0("out of memory\n"); 556 (void) close(s); 557 return; 558 } 559 560 lifc.lifc_family = AF_UNSPEC; 561 lifc.lifc_flags = lifc_flags; 562 lifc.lifc_len = bufsize; 563 lifc.lifc_buf = buf; 564 565 if (ioctl(s, SIOCGLIFCONF, (char *)&lifc) < 0) { 566 Perror0("SIOCGLIFCONF"); 567 (void) close(s); 568 free(buf); 569 return; 570 } 571 } 572 573 lifrp = lifc.lifc_req; 574 for (n = lifc.lifc_len / sizeof (struct lifreq); n > 0; n--, lifrp++) { 575 576 if (!plumball) { 577 /* 578 * We must close and recreate the socket each time 579 * since we don't know what type of socket it is now 580 * (each status function may change it). 581 */ 582 583 (void) close(s); 584 585 af = lifrp->lifr_addr.ss_family; 586 s = socket(SOCKET_AF(af), SOCK_DGRAM, 0); 587 if (s == -1) { 588 /* 589 * Perror0() assumes the name to be in the 590 * globally defined lifreq structure. 591 */ 592 (void) strncpy(lifr.lifr_name, 593 lifrp->lifr_name, sizeof (lifr.lifr_name)); 594 Perror0_exit("socket"); 595 } 596 } 597 598 /* 599 * Only service interfaces that match the on and off 600 * flags masks. 601 */ 602 if (onflags || offflags) { 603 (void) memset(&lifrl, 0, sizeof (lifrl)); 604 (void) strncpy(lifrl.lifr_name, lifrp->lifr_name, 605 sizeof (lifrl.lifr_name)); 606 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifrl) < 0) { 607 /* 608 * Perror0() assumes the name to be in the 609 * globally defined lifreq structure. 610 */ 611 (void) strncpy(lifr.lifr_name, 612 lifrp->lifr_name, sizeof (lifr.lifr_name)); 613 Perror0_exit("foreachinterface: SIOCGLIFFLAGS"); 614 } 615 if ((lifrl.lifr_flags & onflags) != onflags) 616 continue; 617 if ((~lifrl.lifr_flags & offflags) != offflags) 618 continue; 619 } 620 621 if (!plumball) { 622 (void) strncpy(lifrl.lifr_name, lifrp->lifr_name, 623 sizeof (lifrl.lifr_name)); 624 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifrl) < 0) { 625 /* 626 * Perror0() assumes the name to be in the 627 * globally defined lifreq structure. 628 */ 629 (void) strncpy(lifr.lifr_name, 630 lifrp->lifr_name, sizeof (lifr.lifr_name)); 631 Perror0("foreachinterface: SIOCGLIFADDR"); 632 continue; 633 } 634 if (lifrl.lifr_addr.ss_family != af) { 635 /* Switch address family */ 636 af = lifrl.lifr_addr.ss_family; 637 (void) close(s); 638 639 s = socket(SOCKET_AF(af), SOCK_DGRAM, 0); 640 if (s == -1) { 641 /* 642 * Perror0() assumes the name to be in 643 * the globally defined lifreq 644 * structure. 645 */ 646 (void) strncpy(lifr.lifr_name, 647 lifrp->lifr_name, 648 sizeof (lifr.lifr_name)); 649 Perror0_exit("socket"); 650 } 651 } 652 } 653 654 /* 655 * Reset global state 656 * setaddr: Used by parser to tear apart source and dest 657 * name and origname contain the name of the 'current' 658 * interface. 659 */ 660 setaddr = 0; 661 (void) strncpy(name, lifrp->lifr_name, sizeof (name)); 662 (void) strncpy(origname, name, sizeof (origname)); 663 664 (*func)(argc, argv, save_af, lifrp); 665 /* the func could have overwritten origname, so restore */ 666 (void) strncpy(name, origname, sizeof (name)); 667 } 668 free(buf); 669 } 670 671 static void 672 tun_reality_check(void) 673 { 674 struct iftun_req treq; 675 ipsec_req_t *ipsr; 676 677 (void) strncpy(treq.ifta_lifr_name, name, sizeof (treq.ifta_lifr_name)); 678 if (strchr(name, ':') != NULL) { 679 /* Return, we don't need to check. */ 680 return; 681 } 682 if (ioctl(s, SIOCGTUNPARAM, (caddr_t)&treq) < 0 || 683 (treq.ifta_flags & IFTUN_SECURITY) == 0) { 684 /* 685 * Either not a tunnel (the SIOCGTUNPARAM fails on 686 * non-tunnels), or the security flag is not set. Either 687 * way, return. 688 */ 689 return; 690 } 691 692 ipsr = (ipsec_req_t *)&treq.ifta_secinfo; 693 694 if (ipsr->ipsr_esp_req != 0 && 695 ipsr->ipsr_esp_auth_alg == SADB_AALG_NONE && 696 ipsr->ipsr_ah_req == 0) 697 (void) fprintf(stderr, "ifconfig: WARNING - tunnel with " 698 "only ESP and potentially no authentication.\n"); 699 } 700 701 /* 702 * for the specified interface call (*func)(argc, argv, af, lifrp). 703 */ 704 705 static void 706 ifconfig(int argc, char *argv[], int af, struct lifreq *lifrp) 707 { 708 static boolean_t scan_netmask = _B_FALSE; 709 int ret; 710 711 if (argc == 0) { 712 status(); 713 return; 714 } 715 716 if (strcmp(*argv, "auto-dhcp") == 0 || strcmp(*argv, "dhcp") == 0) { 717 if (af == AF_INET) { 718 719 /* 720 * some errors are ignored in the case where 721 * more than one interface is being operated on. 722 */ 723 ret = setifdhcp("ifconfig", name, argc, argv); 724 if (ret == DHCP_EXIT_IF_FAILURE) { 725 if (!all) 726 exit(DHCP_EXIT_FAILURE); 727 } else if (ret != DHCP_EXIT_SUCCESS) 728 exit(ret); 729 } else 730 (void) fprintf(stderr, "ifconfig: dhcp not supported " 731 "for inet6\n"); 732 return; 733 } 734 735 /* 736 * The following is a "hack" to get around the existing interface 737 * setting mechanism. Currently, each interface attribute, 738 * such as address, netmask, broadcast, ... is set separately. But 739 * sometimes two or more attributes must be set together. For 740 * example, setting an address without a netmask does not make sense. 741 * Yet they can be set separately for IPv4 address using the current 742 * ifconfig(1M) syntax. The kernel then "infers" the correct netmask 743 * using the deprecated "IP address classes." This is simply not 744 * correct. 745 * 746 * The "hack" below is to go thru the whole command list looking for 747 * the netmask command first. Then use this netmask to set the 748 * address. This does not provide an extensible way to accommodate 749 * future need for setting more than one attributes together. 750 * 751 * Note that if the "netmask" command argument is a "+", we need 752 * to save this info and do the query after we know the address to 753 * be set. The reason is that if "addif" is used, the working 754 * interface name will be changed later when the logical interface 755 * is created. In in_getmask(), if an address is not provided, 756 * it will use the working interface's address to do the query. 757 * It will be wrong now as we don't know the logical interface's name. 758 * 759 * ifconfig(1M) is too overloaded and the code is so convoluted 760 * that it is "safer" not to re-architect the code to fix the above 761 * issue, hence this "hack." We may be better off to have a new 762 * command with better syntax for configuring network interface 763 * parameters... 764 */ 765 if (!scan_netmask && afp->af_af == AF_INET) { 766 int largc; 767 char **largv; 768 769 /* Only go thru the command list once to find the netmask. */ 770 scan_netmask = _B_TRUE; 771 772 /* 773 * Currently, if multiple netmask commands are specified, the 774 * last one will be used as the final netmask. So we need 775 * to scan the whole list to preserve this behavior. 776 */ 777 for (largc = argc, largv = argv; largc > 0; largc--, largv++) { 778 if (strcmp(*largv, NETMASK_CMD) == 0) { 779 if (--largc == 0) 780 break; 781 largv++; 782 if (strcmp(*largv, "+") == 0) { 783 g_netmask_set = G_NETMASK_PENDING; 784 } else { 785 in_getaddr(*largv, (struct sockaddr *) 786 &g_netmask, NULL); 787 g_netmask_set = G_NETMASK_SET; 788 } 789 /* Continue the scan. */ 790 } 791 } 792 } 793 794 while (argc > 0) { 795 struct cmd *p; 796 boolean_t found_cmd; 797 798 if (debug) 799 (void) printf("ifconfig: argv %s\n", *argv); 800 801 found_cmd = _B_FALSE; 802 for (p = cmds; p->c_func; p++) { 803 if (p->c_name) { 804 if (strcmp(*argv, p->c_name) == 0) { 805 /* 806 * indicate that the command was 807 * found and check to see if 808 * the address family is valid 809 */ 810 found_cmd = _B_TRUE; 811 if (p->c_af == AF_ANY || 812 af == p->c_af) 813 break; 814 } 815 } else { 816 if (p->c_af == AF_ANY || 817 af == p->c_af) 818 break; 819 } 820 } 821 /* 822 * If we found the keyword, but the address family 823 * did not match spit out an error 824 */ 825 if (found_cmd && p->c_name == 0) { 826 (void) fprintf(stderr, "ifconfig: Operation %s not" 827 " supported for %s\n", *argv, afp->af_name); 828 exit(1); 829 } 830 /* 831 * else (no keyword found), we assume it's an address 832 * of some sort 833 */ 834 if (p->c_name == 0 && setaddr) 835 p++; /* got src, do dst */ 836 if (p->c_func) { 837 if (p->c_af == AF_INET6) { 838 v4compat = 0; 839 } 840 if (p->c_parameter == NEXTARG || 841 p->c_parameter == OPTARG) { 842 argc--, argv++; 843 if (argc == 0 && p->c_parameter == NEXTARG) { 844 (void) fprintf(stderr, 845 "ifconfig: no argument for %s\n", 846 p->c_name); 847 exit(1); 848 } 849 } 850 /* 851 * Call the function if: 852 * 853 * there's no address family 854 * restriction 855 * OR 856 * we don't know the address yet 857 * (because we were called from 858 * main) 859 * OR 860 * there is a restriction AND 861 * the address families match 862 */ 863 if ((p->c_af == AF_ANY) || 864 (lifrp == (struct lifreq *)NULL) || 865 (lifrp->lifr_addr.ss_family == p->c_af)) { 866 ret = (*p->c_func)(*argv, p->c_parameter); 867 /* 868 * If c_func failed and we should 869 * abort processing for this 870 * interface on failure, return 871 * now rather than going on to 872 * process other commands for 873 * the same interface. 874 */ 875 if (ret != 0 && p->c_abortonfail) 876 return; 877 } 878 } 879 argc--, argv++; 880 } 881 882 /* Check to see if there's a security hole in the tunnel setup. */ 883 tun_reality_check(); 884 } 885 886 /* ARGSUSED */ 887 static int 888 setdebugflag(char *val, int64_t arg) 889 { 890 debug++; 891 return (0); 892 } 893 894 /* ARGSUSED */ 895 static int 896 setverboseflag(char *val, int64_t arg) 897 { 898 verbose++; 899 return (0); 900 } 901 902 /* 903 * This function fills in the given lifreq's lifr_addr field based on 904 * g_netmask_set. 905 */ 906 static void 907 set_mask_lifreq(struct lifreq *lifr, struct sockaddr_storage *addr, 908 struct sockaddr_storage *mask) 909 { 910 assert(addr != NULL); 911 assert(mask != NULL); 912 913 switch (g_netmask_set) { 914 case G_NETMASK_SET: 915 lifr->lifr_addr = g_netmask; 916 break; 917 918 case G_NETMASK_PENDING: 919 /* 920 * "+" is used as the argument to "netmask" command. Query 921 * the database on the correct netmask based on the address to 922 * be set. 923 */ 924 assert(afp->af_af == AF_INET); 925 g_netmask = *addr; 926 if (!in_getmask((struct sockaddr_in *)&g_netmask, _B_TRUE)) { 927 lifr->lifr_addr = *mask; 928 g_netmask_set = G_NETMASK_NIL; 929 } else { 930 lifr->lifr_addr = g_netmask; 931 g_netmask_set = G_NETMASK_SET; 932 } 933 break; 934 935 case G_NETMASK_NIL: 936 default: 937 lifr->lifr_addr = *mask; 938 break; 939 } 940 } 941 942 /* 943 * Set the interface address. Handles <addr>, <addr>/<n> as well as /<n> 944 * syntax for setting the address, the address plus netmask, and just 945 * the netmask respectively. 946 */ 947 /* ARGSUSED */ 948 static int 949 setifaddr(char *addr, int64_t param) 950 { 951 int prefixlen = 0; 952 struct sockaddr_storage laddr; 953 struct sockaddr_storage netmask; 954 struct sockaddr_in6 *sin6; 955 struct sockaddr_in *sin; 956 struct sockaddr_storage sav_netmask; 957 958 if (addr[0] == '/') 959 return (setifprefixlen(addr, 0)); 960 961 (*afp->af_getaddr)(addr, (struct sockaddr *)&laddr, &prefixlen); 962 963 (void) memset(&netmask, 0, sizeof (netmask)); 964 netmask.ss_family = afp->af_af; 965 switch (prefixlen) { 966 case NO_PREFIX: 967 /* Nothing there - ok */ 968 break; 969 case BAD_ADDR: 970 (void) fprintf(stderr, "ifconfig: Bad prefix length in %s\n", 971 addr); 972 exit(1); 973 default: 974 if (afp->af_af == AF_INET6) { 975 sin6 = (struct sockaddr_in6 *)&netmask; 976 if (!in_prefixlentomask(prefixlen, IPV6_ABITS, 977 (uchar_t *)&sin6->sin6_addr)) { 978 (void) fprintf(stderr, "ifconfig: " 979 "Bad prefix length: %d\n", 980 prefixlen); 981 exit(1); 982 } 983 } else { 984 sin = (struct sockaddr_in *)&netmask; 985 if (!in_prefixlentomask(prefixlen, IP_ABITS, 986 (uchar_t *)&sin->sin_addr)) { 987 (void) fprintf(stderr, "ifconfig: " 988 "Bad prefix length: %d\n", 989 prefixlen); 990 exit(1); 991 } 992 } 993 /* 994 * Just in case of funny setting of both prefix and netmask, 995 * prefix should override the netmask command. 996 */ 997 g_netmask_set = G_NETMASK_NIL; 998 break; 999 } 1000 /* Tell parser that an address was set */ 1001 setaddr++; 1002 /* save copy of netmask to restore in case of error */ 1003 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1004 if (ioctl(s, SIOCGLIFNETMASK, (caddr_t)&lifr) < 0) 1005 Perror0_exit("SIOCGLIFNETMASK"); 1006 sav_netmask = lifr.lifr_addr; 1007 1008 /* 1009 * If setting the address and not the mask, clear any existing mask 1010 * and the kernel will then assign the default (netmask has been set 1011 * to 0 in this case). If setting both (either by using a prefix or 1012 * using the netmask command), set the mask first, so the address will 1013 * be interpreted correctly. 1014 */ 1015 set_mask_lifreq(&lifr, &laddr, &netmask); 1016 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1017 Perror0_exit("SIOCSLIFNETMASK"); 1018 1019 if (debug) { 1020 char abuf[INET6_ADDRSTRLEN]; 1021 void *addr = (afp->af_af == AF_INET) ? 1022 (void *)&((struct sockaddr_in *)&laddr)->sin_addr : 1023 (void *)&((struct sockaddr_in6 *)&laddr)->sin6_addr; 1024 1025 (void) printf("Setting %s af %d addr %s\n", 1026 lifr.lifr_name, afp->af_af, 1027 inet_ntop(afp->af_af, addr, abuf, sizeof (abuf))); 1028 } 1029 lifr.lifr_addr = laddr; 1030 lifr.lifr_addr.ss_family = afp->af_af; 1031 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) { 1032 /* 1033 * Restore the netmask 1034 */ 1035 int saverr = errno; 1036 1037 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1038 lifr.lifr_addr = sav_netmask; 1039 (void) ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr); 1040 errno = saverr; 1041 Perror0_exit("SIOCSLIFADDR"); 1042 } 1043 1044 return (0); 1045 } 1046 1047 /* 1048 * The following functions are stolen from the ipseckey(1m) program. 1049 * Perhaps they should be somewhere common, but for now, we just maintain 1050 * two versions. We do this because of the different semantics for which 1051 * algorithms we select ("requested" for ifconfig vs. "actual" for key). 1052 */ 1053 1054 static ulong_t 1055 parsenum(char *num) 1056 { 1057 ulong_t rc; 1058 char *end = NULL; 1059 1060 errno = 0; 1061 rc = strtoul(num, &end, 0); 1062 if (errno != 0 || end == num || *end != '\0') { 1063 rc = (ulong_t)-1; 1064 } 1065 1066 return (rc); 1067 } 1068 1069 /* 1070 * Parse and reverse parse possible algorithm values, include numbers. 1071 * Mostly stolen from ipseckey.c. See the comments above parsenum() for why 1072 * this isn't common to ipseckey.c. 1073 * 1074 * NOTE: Static buffer in this function for the return value. Since ifconfig 1075 * isn't multithreaded, this isn't a huge problem. 1076 */ 1077 1078 #define NBUF_SIZE 20 /* Enough to print a large integer. */ 1079 1080 static char * 1081 rparsealg(uint8_t alg_value, int proto_num) 1082 { 1083 struct ipsecalgent *alg; 1084 static char numprint[128]; /* Enough to hold an algorithm name. */ 1085 1086 /* Special-case 0 to return "<any-none>" */ 1087 if (alg_value == 0) 1088 return ("<any-none>"); 1089 1090 alg = getipsecalgbynum(alg_value, proto_num, NULL); 1091 if (alg != NULL) { 1092 (void) strlcpy(numprint, alg->a_names[0], sizeof (numprint)); 1093 freeipsecalgent(alg); 1094 } else { 1095 (void) snprintf(numprint, sizeof (numprint), "%d", alg_value); 1096 } 1097 1098 return (numprint); 1099 } 1100 1101 static uint_t 1102 parsealg(char *algname, int proto_num) 1103 { 1104 struct ipsecalgent *alg; 1105 ulong_t invalue; 1106 1107 if (algname == NULL) { 1108 (void) fprintf(stderr, "ifconfig: Unexpected end of command " 1109 "line.\n"); 1110 exit(1); 1111 } 1112 1113 /* 1114 * Special-case "none". Use strcasecmp because its length is 1115 * bound. 1116 */ 1117 if (strcasecmp("none", algname) == 0) { 1118 return ((proto_num == IPSEC_PROTO_ESP) ? 1119 NO_ESP_EALG : NO_ESP_AALG); 1120 } 1121 1122 alg = getipsecalgbyname(algname, proto_num, NULL); 1123 if (alg != NULL) { 1124 invalue = alg->a_alg_num; 1125 freeipsecalgent(alg); 1126 return ((uint_t)invalue); 1127 } 1128 1129 /* 1130 * Since algorithms can be loaded during kernel run-time, check for 1131 * numeric algorithm values too. 1132 */ 1133 invalue = parsenum(algname); 1134 if ((invalue & (ulong_t)0xff) == invalue) 1135 return ((uint_t)invalue); 1136 1137 (void) fprintf(stderr, "ifconfig: %s algorithm type %s unknown.\n", 1138 (proto_num == IPSEC_PROTO_ESP) ? 1139 "Encryption" : "Authentication", algname); 1140 exit(1); 1141 /* NOTREACHED */ 1142 } 1143 1144 /* 1145 * Actual ifconfig functions to set tunnel security properties. 1146 */ 1147 1148 enum ipsec_alg_type { ESP_ENCR_ALG = 1, ESP_AUTH_ALG, AH_AUTH_ALG }; 1149 1150 boolean_t first_set_tun = _B_TRUE; 1151 boolean_t encr_alg_set = _B_FALSE; 1152 1153 static int 1154 set_tun_algs(int which_alg, int alg) 1155 { 1156 struct iftun_req treq; 1157 ipsec_req_t *ipsr; 1158 1159 (void) strncpy(treq.ifta_lifr_name, name, sizeof (treq.ifta_lifr_name)); 1160 if (strchr(name, ':') != NULL) { 1161 errno = EPERM; 1162 Perror0_exit("Tunnel params on logical interfaces"); 1163 } 1164 if (ioctl(s, SIOCGTUNPARAM, (caddr_t)&treq) < 0) { 1165 if (errno == EOPNOTSUPP || errno == EINVAL) 1166 Perror0_exit("Not a tunnel"); 1167 else Perror0_exit("SIOCGTUNPARAM"); 1168 } 1169 1170 ipsr = (ipsec_req_t *)&treq.ifta_secinfo; 1171 1172 if (treq.ifta_vers != IFTUN_VERSION) { 1173 (void) fprintf(stderr, 1174 "Kernel tunnel secinfo version mismatch.\n"); 1175 exit(1); 1176 } 1177 1178 /* 1179 * If I'm just starting off this ifconfig, I want a clean slate, 1180 * otherwise, I've captured the current tunnel security settings. 1181 * In the case of continuation, I merely add to the settings. 1182 */ 1183 if (first_set_tun) { 1184 first_set_tun = _B_FALSE; 1185 (void) memset(ipsr, 0, sizeof (*ipsr)); 1186 } 1187 1188 treq.ifta_flags = IFTUN_SECURITY; 1189 1190 switch (which_alg) { 1191 case ESP_ENCR_ALG: 1192 if (alg == NO_ESP_EALG) { 1193 if (ipsr->ipsr_esp_auth_alg == SADB_AALG_NONE) 1194 ipsr->ipsr_esp_req = 0; 1195 ipsr->ipsr_esp_alg = SADB_EALG_NONE; 1196 } else { 1197 encr_alg_set = _B_TRUE; 1198 ipsr->ipsr_esp_req = 1199 IPSEC_PREF_REQUIRED | IPSEC_PREF_UNIQUE; 1200 ipsr->ipsr_esp_alg = alg; 1201 } 1202 break; 1203 case ESP_AUTH_ALG: 1204 if (alg == NO_ESP_AALG) { 1205 if (ipsr->ipsr_esp_alg == SADB_EALG_NONE || 1206 ipsr->ipsr_esp_alg == SADB_EALG_NULL) 1207 ipsr->ipsr_esp_req = 0; 1208 ipsr->ipsr_esp_auth_alg = SADB_AALG_NONE; 1209 } else { 1210 ipsr->ipsr_esp_req = 1211 IPSEC_PREF_REQUIRED | IPSEC_PREF_UNIQUE; 1212 ipsr->ipsr_esp_auth_alg = alg; 1213 1214 /* Let the user specify NULL encryption implicitly. */ 1215 if (ipsr->ipsr_esp_alg == SADB_EALG_NONE && 1216 !encr_alg_set) 1217 ipsr->ipsr_esp_alg = SADB_EALG_NULL; 1218 } 1219 break; 1220 case AH_AUTH_ALG: 1221 if (alg == NO_AH_AALG) { 1222 ipsr->ipsr_ah_req = 0; 1223 ipsr->ipsr_auth_alg = SADB_AALG_NONE; 1224 } else { 1225 ipsr->ipsr_ah_req = 1226 IPSEC_PREF_REQUIRED | IPSEC_PREF_UNIQUE; 1227 ipsr->ipsr_auth_alg = alg; 1228 } 1229 break; 1230 /* Will never hit DEFAULT */ 1231 } 1232 1233 if (ioctl(s, SIOCSTUNPARAM, (caddr_t)&treq) < 0) { 1234 Perror2_exit("set tunnel security properties", 1235 treq.ifta_lifr_name); 1236 } 1237 1238 return (0); 1239 } 1240 1241 /* ARGSUSED */ 1242 static int 1243 set_tun_esp_encr_alg(char *addr, int64_t param) 1244 { 1245 return (set_tun_algs(ESP_ENCR_ALG, 1246 parsealg(addr, IPSEC_PROTO_ESP))); 1247 } 1248 1249 /* ARGSUSED */ 1250 static int 1251 set_tun_esp_auth_alg(char *addr, int64_t param) 1252 { 1253 return (set_tun_algs(ESP_AUTH_ALG, 1254 parsealg(addr, IPSEC_PROTO_AH))); 1255 } 1256 1257 /* ARGSUSED */ 1258 static int 1259 set_tun_ah_alg(char *addr, int64_t param) 1260 { 1261 return (set_tun_algs(AH_AUTH_ALG, 1262 parsealg(addr, IPSEC_PROTO_AH))); 1263 } 1264 1265 /* ARGSUSED */ 1266 static int 1267 setifrevarp(char *arg, int64_t param) 1268 { 1269 struct sockaddr_in laddr; 1270 1271 if (afp->af_af == AF_INET6) { 1272 (void) fprintf(stderr, 1273 "ifconfig: revarp not possible on IPv6 interface %s\n", 1274 name); 1275 exit(1); 1276 } 1277 if (doifrevarp(name, &laddr)) { 1278 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1279 laddr.sin_family = AF_INET; 1280 (void) memcpy(&lifr.lifr_addr, &laddr, sizeof (laddr)); 1281 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) 1282 Perror0_exit("SIOCSLIFADDR"); 1283 } 1284 return (0); 1285 } 1286 1287 /* ARGSUSED */ 1288 static int 1289 setifsubnet(char *addr, int64_t param) 1290 { 1291 int prefixlen = 0; 1292 struct sockaddr_storage subnet; 1293 1294 (*afp->af_getaddr)(addr, &subnet, &prefixlen); 1295 1296 switch (prefixlen) { 1297 case NO_PREFIX: 1298 (void) fprintf(stderr, 1299 "ifconfig: Missing prefix length in subnet %s\n", addr); 1300 exit(1); 1301 /* NOTREACHED */ 1302 case BAD_ADDR: 1303 (void) fprintf(stderr, 1304 "ifconfig: Bad prefix length in %s\n", addr); 1305 exit(1); 1306 default: 1307 break; 1308 } 1309 1310 lifr.lifr_addr = subnet; 1311 lifr.lifr_addrlen = prefixlen; 1312 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1313 if (ioctl(s, SIOCSLIFSUBNET, (caddr_t)&lifr) < 0) 1314 Perror0_exit("SIOCSLIFSUBNET"); 1315 1316 return (0); 1317 } 1318 1319 /* ARGSUSED */ 1320 static int 1321 setifnetmask(char *addr, int64_t param) 1322 { 1323 struct sockaddr_in netmask; 1324 1325 assert(afp->af_af != AF_INET6); 1326 1327 if (strcmp(addr, "+") == 0) { 1328 if (!in_getmask(&netmask, _B_FALSE)) 1329 return (0); 1330 (void) printf("Setting netmask of %s to %s\n", name, 1331 inet_ntoa(netmask.sin_addr)); 1332 } else { 1333 in_getaddr(addr, (struct sockaddr *)&netmask, NULL); 1334 } 1335 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1336 (void) memcpy(&lifr.lifr_addr, &netmask, sizeof (netmask)); 1337 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1338 Perror0_exit("SIOCSLIFNETMASK"); 1339 return (0); 1340 } 1341 1342 /* 1343 * Parse '/<n>' as a netmask. 1344 */ 1345 /* ARGSUSED */ 1346 static int 1347 setifprefixlen(char *addr, int64_t param) 1348 { 1349 int prefixlen; 1350 int af = afp->af_af; 1351 1352 prefixlen = in_getprefixlen(addr, _B_TRUE, 1353 (af == AF_INET) ? IP_ABITS : IPV6_ABITS); 1354 if (prefixlen < 0) { 1355 (void) fprintf(stderr, 1356 "ifconfig: Bad prefix length in %s\n", addr); 1357 exit(1); 1358 } 1359 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 1360 lifr.lifr_addr.ss_family = af; 1361 if (af == AF_INET6) { 1362 struct sockaddr_in6 *sin6; 1363 1364 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 1365 if (!in_prefixlentomask(prefixlen, IPV6_ABITS, 1366 (uchar_t *)&sin6->sin6_addr)) { 1367 (void) fprintf(stderr, "ifconfig: " 1368 "Bad prefix length: %d\n", 1369 prefixlen); 1370 exit(1); 1371 } 1372 } else if (af == AF_INET) { 1373 struct sockaddr_in *sin; 1374 1375 sin = (struct sockaddr_in *)&lifr.lifr_addr; 1376 if (!in_prefixlentomask(prefixlen, IP_ABITS, 1377 (uchar_t *)&sin->sin_addr)) { 1378 (void) fprintf(stderr, "ifconfig: " 1379 "Bad prefix length: %d\n", 1380 prefixlen); 1381 exit(1); 1382 } 1383 } else { 1384 (void) fprintf(stderr, "ifconfig: setting prefix only supported" 1385 " for address family inet or inet6\n"); 1386 exit(1); 1387 } 1388 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1389 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1390 Perror0_exit("SIOCSLIFNETMASK"); 1391 return (0); 1392 } 1393 1394 /* ARGSUSED */ 1395 static int 1396 setifbroadaddr(char *addr, int64_t param) 1397 { 1398 struct sockaddr_in broadaddr; 1399 1400 assert(afp->af_af != AF_INET6); 1401 1402 if (strcmp(addr, "+") == 0) { 1403 /* 1404 * This doesn't set the broadcast address at all. Rather, it 1405 * gets, then sets the interface's address, relying on the fact 1406 * that resetting the address will reset the broadcast address. 1407 */ 1408 (void) strncpy(lifr.lifr_name, name, 1409 sizeof (lifr.lifr_name)); 1410 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 1411 if (errno != EADDRNOTAVAIL) 1412 Perror0_exit("SIOCGLIFADDR"); 1413 return (0); 1414 } 1415 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) 1416 Perror0_exit("SIOCGLIFADDR"); 1417 1418 return (0); 1419 } 1420 in_getaddr(addr, (struct sockaddr *)&broadaddr, NULL); 1421 1422 (void) memcpy(&lifr.lifr_addr, &broadaddr, sizeof (broadaddr)); 1423 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1424 if (ioctl(s, SIOCSLIFBRDADDR, (caddr_t)&lifr) < 0) 1425 Perror0_exit("SIOCSLIFBRDADDR"); 1426 return (0); 1427 } 1428 1429 /* 1430 * set interface destination address 1431 */ 1432 /* ARGSUSED */ 1433 static int 1434 setifdstaddr(char *addr, int64_t param) 1435 { 1436 (*afp->af_getaddr)(addr, (struct sockaddr *)&lifr.lifr_addr, NULL); 1437 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1438 if (ioctl(s, SIOCSLIFDSTADDR, (caddr_t)&lifr) < 0) 1439 Perror0_exit("setifdstaddr: SIOCSLIFDSTADDR"); 1440 return (0); 1441 } 1442 1443 /* ARGSUSED */ 1444 static int 1445 setifflags(char *val, int64_t value) 1446 { 1447 int phyintlen, origphyintlen; 1448 1449 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1450 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) 1451 Perror0_exit("setifflags: SIOCGLIFFLAGS"); 1452 1453 if (value == IFF_NOFAILOVER) { 1454 /* 1455 * Fail if '-failover' is set after a prior addif created the 1456 * alias on a different interface. This can happen when the 1457 * interface is part of an IPMP group. 1458 */ 1459 phyintlen = strcspn(name, ":"); 1460 origphyintlen = strcspn(origname, ":"); 1461 if (phyintlen != origphyintlen || 1462 strncmp(name, origname, phyintlen) != 0) { 1463 (void) fprintf(stderr, "ifconfig: can't set -failover " 1464 "on failed/standby/offlined interface %s\n", 1465 origname); 1466 exit(1); 1467 } 1468 } 1469 1470 if (value < 0) { 1471 value = -value; 1472 lifr.lifr_flags &= ~value; 1473 if ((value & IFF_UP) && (lifr.lifr_flags & IFF_DUPLICATE)) { 1474 /* 1475 * If the user is trying to mark an interface with a 1476 * duplicate address as "down," then fetch the address 1477 * and set it. This will cause IP to clear the 1478 * IFF_DUPLICATE flag and stop the automatic recovery 1479 * timer. 1480 */ 1481 value = lifr.lifr_flags; 1482 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) >= 0) 1483 (void) ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr); 1484 lifr.lifr_flags = value; 1485 } 1486 } else { 1487 lifr.lifr_flags |= value; 1488 } 1489 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1490 if (ioctl(s, SIOCSLIFFLAGS, (caddr_t)&lifr) < 0) { 1491 Perror0_exit("setifflags: SIOCSLIFFLAGS"); 1492 } 1493 return (0); 1494 } 1495 1496 /* ARGSUSED */ 1497 static int 1498 setifmetric(char *val, int64_t param) 1499 { 1500 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1501 lifr.lifr_metric = atoi(val); 1502 if (ioctl(s, SIOCSLIFMETRIC, (caddr_t)&lifr) < 0) 1503 Perror0_exit("setifmetric: SIOCSLIFMETRIC"); 1504 return (0); 1505 } 1506 1507 /* ARGSUSED */ 1508 static int 1509 setifmtu(char *val, int64_t param) 1510 { 1511 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1512 lifr.lifr_mtu = atoi(val); 1513 if (ioctl(s, SIOCSLIFMTU, (caddr_t)&lifr) < 0) 1514 Perror0_exit("setifmtu: SIOCSLIFMTU"); 1515 return (0); 1516 } 1517 1518 /* ARGSUSED */ 1519 static int 1520 setifindex(char *val, int64_t param) 1521 { 1522 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1523 lifr.lifr_index = atoi(val); 1524 if (ioctl(s, SIOCSLIFINDEX, (caddr_t)&lifr) < 0) 1525 Perror0_exit("setifindex: SIOCSLIFINDEX"); 1526 return (0); 1527 } 1528 1529 /* ARGSUSED */ 1530 static int 1531 setifether(char *addr, int64_t param) 1532 { 1533 uchar_t *ea; 1534 iface_t *current; 1535 int maclen; 1536 1537 if (addr == NULL) { 1538 ifstatus(name); 1539 print_ifether(name); 1540 return (0); 1541 } 1542 1543 phyif = NULL; 1544 logifs = NULL; 1545 1546 /* 1547 * if the IP interface in the arguments is a logical 1548 * interface, exit with an error now. 1549 */ 1550 if (strchr(name, ':') != NULL) { 1551 (void) fprintf(stderr, "ifconfig: cannot change" 1552 " ethernet address of a logical interface\n"); 1553 exit(1); 1554 } 1555 1556 ea = _link_aton(addr, &maclen); 1557 if (ea == NULL) { 1558 if (maclen == -1) 1559 (void) fprintf(stderr, 1560 "ifconfig: %s: bad address\n", addr); 1561 else 1562 (void) fprintf(stderr, "ifconfig: malloc() failed\n"); 1563 exit(1); 1564 } 1565 1566 (void) strncpy(savedname, name, sizeof (savedname)); 1567 1568 /* 1569 * Call selectifs only for the IP interfaces that are ipv4. 1570 * offflags == IFF_IPV6 because you should not change the 1571 * Ethernet address of an ipv6 interface 1572 */ 1573 foreachinterface(selectifs, 0, (char **)NULL, 0, 0, IFF_IPV6, 0); 1574 1575 /* If physical interface not found, exit now */ 1576 if (phyif == NULL) { 1577 (void) fprintf(stderr, 1578 "ifconfig: interface %s not found\n", savedname); 1579 exit(1); 1580 } 1581 1582 /* Restore */ 1583 (void) strncpy(name, savedname, sizeof (name)); 1584 (void) strncpy(origname, savedname, sizeof (origname)); 1585 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1586 1587 /* 1588 * close and reopen the socket 1589 * we don't know which type of socket we have now 1590 */ 1591 (void) close(s); 1592 s = socket(SOCKET_AF(AF_UNSPEC), SOCK_DGRAM, 0); 1593 if (s < 0) { 1594 Perror0_exit("socket"); 1595 } 1596 1597 /* 1598 * mark down the logical interfaces first, 1599 * and then the physical interface 1600 */ 1601 if (updownifs(logifs, 0) < 0 || updownifs(phyif, 0) < 0) { 1602 Perror0_exit("mark down interface failed"); 1603 } 1604 1605 /* 1606 * Change the physical address 1607 */ 1608 if (dlpi_set_address(savedname, ea, maclen) == -1) { 1609 (void) fprintf(stderr, 1610 "ifconfig: failed setting mac address on %s\n", 1611 savedname); 1612 } 1613 1614 /* 1615 * if any interfaces were marked down before changing the 1616 * ethernet address, put them up again. 1617 * First the physical interface, then the logical ones. 1618 */ 1619 if (updownifs(phyif, 1) < 0 || updownifs(logifs, 1) < 0) { 1620 Perror0_exit("mark down interface failed"); 1621 } 1622 1623 /* Free the memory allocated by selectifs */ 1624 free(phyif); 1625 for (current = logifs; current != NULL; current = logifs) { 1626 logifs = logifs->next; 1627 free(current); 1628 } 1629 1630 return (0); 1631 } 1632 1633 /* 1634 * Print an interface's Ethernet address, if it has one. 1635 */ 1636 static void 1637 print_ifether(char *ifname) 1638 { 1639 int protocol; 1640 icfg_if_t interface; 1641 icfg_handle_t handle; 1642 int fd; 1643 1644 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1645 1646 fd = socket(AF_INET, SOCK_DGRAM, 0); 1647 if (fd == -1 || ioctl(fd, SIOCGLIFFLAGS, &lifr) == -1) { 1648 /* 1649 * It's possible the interface is only configured for 1650 * IPv6; check again with AF_INET6. 1651 */ 1652 (void) close(fd); 1653 fd = socket(AF_INET6, SOCK_DGRAM, 0); 1654 if (fd == -1 || ioctl(fd, SIOCGLIFFLAGS, &lifr) == -1) { 1655 (void) close(fd); 1656 return; 1657 } 1658 } 1659 (void) close(fd); 1660 1661 /* Virtual interfaces don't have MAC addresses */ 1662 if (lifr.lifr_flags & IFF_VIRTUAL) 1663 return; 1664 1665 /* 1666 * We must be careful to set if_protocol based on the current 1667 * properties of the interface. For instance, if "ip.tun0" is 1668 * configured only as an IPv6 tunnel, then if_protocol must be 1669 * set to AF_INET6 or icfg_get_tunnel_lower() will fail and 1670 * we will falsely conclude that it's not a tunnel. 1671 */ 1672 interface.if_protocol = AF_INET; 1673 if (lifr.lifr_flags & IFF_IPV6) 1674 interface.if_protocol = AF_INET6; 1675 1676 (void) strncpy(interface.if_name, ifname, sizeof (interface.if_name)); 1677 1678 if (icfg_open(&handle, &interface) == ICFG_SUCCESS) { 1679 if (icfg_get_tunnel_lower(handle, &protocol) == ICFG_SUCCESS) { 1680 /* Tunnel op succeeded -- it's a tunnel so skip */ 1681 icfg_close(handle); 1682 return; 1683 } 1684 icfg_close(handle); 1685 } 1686 1687 dlpi_print_address(ifname); 1688 } 1689 1690 /* 1691 * static void selectifs(int argc, char *argv[], int af, struct lifreq *rp) 1692 * 1693 * Called inside setifether() to create a list of interfaces to 1694 * mark down/up when changing the Ethernet address. 1695 * If the current interface is the physical interface passed 1696 * as an argument to ifconfig, update phyif. 1697 * If the current interface is a logical interface associated 1698 * to the physical interface, add it to the logifs list. 1699 */ 1700 /* ARGSUSED */ 1701 static void 1702 selectifs(int argc, char *argv[], int af, struct lifreq *rp) 1703 { 1704 char *colonp; 1705 int length; 1706 iface_t *current; 1707 1708 /* 1709 * savedname= name of the IP interface to which you want to 1710 * change ethernet address 1711 * name= name of the current IP interface 1712 */ 1713 colonp = strchr(name, ':'); 1714 if (colonp == NULL) 1715 length = max(strlen(savedname), strlen(name)); 1716 else 1717 length = max(strlen(savedname), colonp - name); 1718 if (strncmp(savedname, name, length) == 0) { 1719 (void) strcpy(lifr.lifr_name, name); 1720 if (ioctl(s, SIOCGLIFFLAGS, &lifr) < 0) { 1721 Perror0("selectifs: SIOCGLIFFLAGS"); 1722 return; 1723 } 1724 1725 if ((current = malloc(sizeof (iface_t))) == NULL) { 1726 Perror0_exit("selectifs: malloc failed\n"); 1727 } 1728 1729 if (colonp == NULL) { 1730 /* this is the physical interface */ 1731 phyif = current; 1732 bcopy(&lifr, &phyif->lifr, sizeof (struct lifreq)); 1733 phyif->next = NULL; 1734 } else { 1735 /* this is a logical interface */ 1736 bcopy(&lifr, ¤t->lifr, sizeof (struct lifreq)); 1737 current->next = logifs; 1738 logifs = current; 1739 } 1740 } 1741 } 1742 1743 /* 1744 * static int updownifs(iface_t *ifs, int up) 1745 * 1746 * It takes in input a list of IP interfaces (ifs) 1747 * and a flag (up). 1748 * It marks each interface in the list down (up = 0) 1749 * or up (up > 0). This is done ONLY if the IP 1750 * interface was originally up. 1751 * 1752 * Return values: 1753 * 0 = everything OK 1754 * -1 = problem 1755 */ 1756 static int 1757 updownifs(iface_t *ifs, int up) 1758 { 1759 iface_t *current; 1760 int ret = 0; 1761 int save_errno; 1762 char savename[LIFNAMSIZ]; 1763 uint64_t orig_flags; 1764 1765 for (current = ifs; current != NULL; current = current->next) { 1766 if (current->lifr.lifr_flags & IFF_UP) { 1767 orig_flags = current->lifr.lifr_flags; 1768 if (!up) 1769 current->lifr.lifr_flags &= ~IFF_UP; 1770 if (ioctl(s, SIOCSLIFFLAGS, ¤t->lifr) < 0) { 1771 save_errno = errno; 1772 (void) strcpy(savename, 1773 current->lifr.lifr_name); 1774 ret = -1; 1775 } 1776 if (!up) /* restore the original flags */ 1777 current->lifr.lifr_flags = orig_flags; 1778 } 1779 } 1780 1781 if (ret == -1) { 1782 (void) strcpy(lifr.lifr_name, savename); 1783 errno = save_errno; 1784 } 1785 return (ret); 1786 } 1787 1788 /* 1789 * Create the next unused logical interface using the original name 1790 * and assign the address (and mask if '/<n>' is part of the address). 1791 * Use the new logical interface for subsequent subcommands by updating 1792 * the name variable. 1793 * 1794 * This allows syntax like: 1795 * ifconfig le0 addif 109.106.86.130 netmask + up \ 1796 * addif 109.106.86.131 netmask + up 1797 */ 1798 /* ARGSUSED */ 1799 static int 1800 addif(char *str, int64_t param) 1801 { 1802 int prefixlen = 0; 1803 struct sockaddr_storage laddr; 1804 struct sockaddr_storage mask; 1805 1806 (void) strncpy(name, origname, sizeof (name)); 1807 1808 if (strchr(name, ':') != NULL) { 1809 (void) fprintf(stderr, 1810 "ifconfig: addif: bad physical interface name %s\n", 1811 name); 1812 exit(1); 1813 } 1814 1815 /* 1816 * clear so parser will interpret next address as source followed 1817 * by possible dest 1818 */ 1819 setaddr = 0; 1820 (*afp->af_getaddr)(str, (struct sockaddr *)&laddr, &prefixlen); 1821 1822 switch (prefixlen) { 1823 case NO_PREFIX: 1824 /* Nothing there - ok */ 1825 break; 1826 case BAD_ADDR: 1827 (void) fprintf(stderr, 1828 "ifconfig: Bad prefix length in %s\n", str); 1829 exit(1); 1830 default: 1831 (void) memset(&mask, 0, sizeof (mask)); 1832 mask.ss_family = afp->af_af; 1833 if (afp->af_af == AF_INET6) { 1834 struct sockaddr_in6 *sin6; 1835 sin6 = (struct sockaddr_in6 *)&mask; 1836 if (!in_prefixlentomask(prefixlen, IPV6_ABITS, 1837 (uchar_t *)&sin6->sin6_addr)) { 1838 (void) fprintf(stderr, "ifconfig: " 1839 "Bad prefix length: %d\n", 1840 prefixlen); 1841 exit(1); 1842 } 1843 } else { 1844 struct sockaddr_in *sin; 1845 1846 sin = (struct sockaddr_in *)&mask; 1847 if (!in_prefixlentomask(prefixlen, IP_ABITS, 1848 (uchar_t *)&sin->sin_addr)) { 1849 (void) fprintf(stderr, "ifconfig: " 1850 "Bad prefix length: %d\n", 1851 prefixlen); 1852 exit(1); 1853 } 1854 } 1855 g_netmask_set = G_NETMASK_NIL; 1856 break; 1857 } 1858 1859 /* 1860 * This is a "hack" to get around the problem of SIOCLIFADDIF. The 1861 * problem is that this ioctl does not include the netmask when 1862 * adding a logical interface. This is the same problem described 1863 * in the ifconfig() comments. To get around this problem, we first 1864 * add the logical interface with a 0 address. After that, we set 1865 * the netmask if provided. Finally we set the interface address. 1866 */ 1867 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1868 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 1869 1870 /* Note: no need to do DAD here since the interface isn't up yet. */ 1871 1872 if (ioctl(s, SIOCLIFADDIF, (caddr_t)&lifr) < 0) 1873 Perror0_exit("addif: SIOCLIFADDIF"); 1874 1875 (void) printf("Created new logical interface %s\n", 1876 lifr.lifr_name); 1877 (void) strncpy(name, lifr.lifr_name, sizeof (name)); 1878 1879 /* 1880 * Check and see if any "netmask" command is used and perform the 1881 * necessary operation. 1882 */ 1883 set_mask_lifreq(&lifr, &laddr, &mask); 1884 /* 1885 * Only set the netmask if "netmask" command is used or a prefix is 1886 * provided. 1887 */ 1888 if (g_netmask_set == G_NETMASK_SET || prefixlen >= 0) { 1889 if (ioctl(s, SIOCSLIFNETMASK, (caddr_t)&lifr) < 0) 1890 Perror0_exit("addif: SIOCSLIFNETMASK"); 1891 } 1892 1893 /* Finally, we set the interface address. */ 1894 lifr.lifr_addr = laddr; 1895 if (ioctl(s, SIOCSLIFADDR, (caddr_t)&lifr) < 0) 1896 Perror0_exit("SIOCSLIFADDR"); 1897 1898 /* 1899 * let parser know we got a source. 1900 * Next address, if given, should be dest 1901 */ 1902 setaddr++; 1903 return (0); 1904 } 1905 1906 /* 1907 * Remove a logical interface based on its IP address. Unlike addif 1908 * there is no '/<n>' here. 1909 * Verifies that the interface is down before it is removed. 1910 */ 1911 /* ARGSUSED */ 1912 static int 1913 removeif(char *str, int64_t param) 1914 { 1915 struct sockaddr_storage laddr; 1916 1917 if (strchr(name, ':') != NULL) { 1918 (void) fprintf(stderr, 1919 "ifconfig: removeif: bad physical interface name %s\n", 1920 name); 1921 exit(1); 1922 } 1923 1924 (*afp->af_getaddr)(str, &laddr, NULL); 1925 lifr.lifr_addr = laddr; 1926 1927 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1928 if (ioctl(s, SIOCLIFREMOVEIF, (caddr_t)&lifr) < 0) { 1929 if (errno == EBUSY) { 1930 /* This can only happen if ipif_id = 0 */ 1931 (void) fprintf(stderr, 1932 "ifconfig: removeif: can't remove interface: %s\n", 1933 name); 1934 exit(1); 1935 } 1936 Perror0_exit("removeif: SIOCLIFREMOVEIF"); 1937 } 1938 return (0); 1939 } 1940 1941 /* 1942 * Set the address token for IPv6. 1943 */ 1944 /* ARGSUSED */ 1945 static int 1946 setiftoken(char *addr, int64_t param) 1947 { 1948 int prefixlen = 0; 1949 struct sockaddr_in6 token; 1950 1951 in6_getaddr(addr, (struct sockaddr *)&token, &prefixlen); 1952 switch (prefixlen) { 1953 case NO_PREFIX: 1954 (void) fprintf(stderr, 1955 "ifconfig: Missing prefix length in subnet %s\n", addr); 1956 exit(1); 1957 /* NOTREACHED */ 1958 case BAD_ADDR: 1959 (void) fprintf(stderr, 1960 "ifconfig: Bad prefix length in %s\n", addr); 1961 exit(1); 1962 default: 1963 break; 1964 } 1965 (void) memcpy(&lifr.lifr_addr, &token, sizeof (token)); 1966 lifr.lifr_addrlen = prefixlen; 1967 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 1968 if (ioctl(s, SIOCSLIFTOKEN, (caddr_t)&lifr) < 0) { 1969 Perror0_exit("setiftoken: SIOCSLIFTOKEN"); 1970 } 1971 return (0); 1972 } 1973 1974 /* 1975 * Return value: 0 on success, -1 on failure. 1976 */ 1977 static int 1978 connect_to_mpathd(int family) 1979 { 1980 int s; 1981 struct sockaddr_storage ss; 1982 struct sockaddr_in *sin = (struct sockaddr_in *)&ss; 1983 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ss; 1984 struct in6_addr loopback_addr = IN6ADDR_LOOPBACK_INIT; 1985 int addrlen; 1986 int ret; 1987 int on; 1988 1989 s = socket(family, SOCK_STREAM, 0); 1990 if (s < 0) { 1991 Perror0_exit("connect_to_mpathd: socket"); 1992 } 1993 (void) bzero((char *)&ss, sizeof (ss)); 1994 ss.ss_family = family; 1995 /* 1996 * Need to bind to a privileged port. For non-root, this 1997 * will fail. in.mpathd verifies that only commands coming 1998 * from privileged ports succeed so that ordinary users 1999 * can't connect and start talking to in.mpathd 2000 */ 2001 on = 1; 2002 if (setsockopt(s, IPPROTO_TCP, TCP_ANONPRIVBIND, &on, 2003 sizeof (on)) < 0) { 2004 Perror0_exit("connect_to_mpathd: setsockopt"); 2005 } 2006 switch (family) { 2007 case AF_INET: 2008 sin->sin_port = 0; 2009 sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); 2010 addrlen = sizeof (struct sockaddr_in); 2011 break; 2012 case AF_INET6: 2013 sin6->sin6_port = 0; 2014 sin6->sin6_addr = loopback_addr; 2015 addrlen = sizeof (struct sockaddr_in6); 2016 break; 2017 } 2018 ret = bind(s, (struct sockaddr *)&ss, addrlen); 2019 if (ret != 0) { 2020 (void) close(s); 2021 return (-1); 2022 } 2023 2024 switch (family) { 2025 case AF_INET: 2026 sin->sin_port = htons(MPATHD_PORT); 2027 break; 2028 case AF_INET6: 2029 sin6->sin6_port = htons(MPATHD_PORT); 2030 break; 2031 } 2032 ret = connect(s, (struct sockaddr *)&ss, addrlen); 2033 (void) close(s); 2034 return (ret); 2035 } 2036 2037 /* ARGSUSED */ 2038 static int 2039 setifgroupname(char *grpname, int64_t param) 2040 { 2041 if (debug) { 2042 (void) printf("Setting groupname %s on interface %s\n", 2043 grpname, name); 2044 } 2045 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2046 (void) strncpy(lifr.lifr_groupname, grpname, 2047 sizeof (lifr.lifr_groupname)); 2048 if (ioctl(s, SIOCSLIFGROUPNAME, (caddr_t)&lifr) < 0) { 2049 Perror0_exit("setifgroupname: SIOCSLIFGROUPNAME"); 2050 } 2051 2052 /* 2053 * If the SUNW_NO_MPATHD environment variable is set then don't 2054 * bother starting up in.mpathd. See PSARC/2002/249 for the 2055 * depressing details on this bit of stupidity. 2056 */ 2057 if (getenv("SUNW_NO_MPATHD") != NULL) { 2058 return (0); 2059 } 2060 2061 /* 2062 * Try to connect to in.mpathd using IPv4. If we succeed, 2063 * we conclude that in.mpathd is running, and quit. 2064 */ 2065 if (connect_to_mpathd(AF_INET) == 0) { 2066 /* connect succeeded, mpathd is already running */ 2067 return (0); 2068 } 2069 /* 2070 * Try to connect to in.mpathd using IPv6. If we succeed, 2071 * we conclude that in.mpathd is running, and quit. 2072 */ 2073 if (connect_to_mpathd(AF_INET6) == 0) { 2074 /* connect succeeded, mpathd is already running */ 2075 return (0); 2076 } 2077 2078 /* 2079 * in.mpathd may not be running. Start it now. If it is already 2080 * running, in.mpathd will take care of handling multiple incarnations 2081 * of itself. ifconfig only tries to optimize performance by not 2082 * starting another incarnation of in.mpathd. 2083 */ 2084 switch (fork()) { 2085 2086 case -1: 2087 Perror0_exit("setifgroupname: fork"); 2088 /* NOTREACHED */ 2089 case 0: 2090 (void) execl(MPATHD_PATH, MPATHD_PATH, NULL); 2091 _exit(1); 2092 /* NOTREACHED */ 2093 default: 2094 return (0); 2095 } 2096 } 2097 2098 2099 /* 2100 * To list all the modules above a given network interface. 2101 */ 2102 /* ARGSUSED */ 2103 static int 2104 modlist(char *null, int64_t param) 2105 { 2106 int muxfd; 2107 int ipfd_lowstr; 2108 int arpfd_lowstr; 2109 int num_mods; 2110 int i; 2111 struct str_list strlist; 2112 int orig_arpid; 2113 2114 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2115 if (ip_domux2fd(&muxfd, &ipfd_lowstr, &arpfd_lowstr, 2116 &orig_arpid) < 0) { 2117 return (-1); 2118 } 2119 if ((num_mods = ioctl(ipfd_lowstr, I_LIST, NULL)) < 0) { 2120 Perror0("cannot I_LIST to get the number of modules"); 2121 } else { 2122 if (debug > 0) { 2123 (void) printf("Listing (%d) modules above %s\n", 2124 num_mods, name); 2125 } 2126 2127 strlist.sl_nmods = num_mods; 2128 strlist.sl_modlist = malloc(sizeof (struct str_mlist) * 2129 num_mods); 2130 if (strlist.sl_modlist == NULL) { 2131 Perror0("cannot malloc"); 2132 } else { 2133 if (ioctl(ipfd_lowstr, I_LIST, (caddr_t)&strlist) < 0) { 2134 Perror0("cannot I_LIST for module names"); 2135 } else { 2136 for (i = 0; i < strlist.sl_nmods; i++) { 2137 (void) printf("%d %s\n", i, 2138 strlist.sl_modlist[i].l_name); 2139 } 2140 } 2141 free(strlist.sl_modlist); 2142 } 2143 } 2144 return (ip_plink(muxfd, ipfd_lowstr, arpfd_lowstr, orig_arpid)); 2145 } 2146 2147 #define MODINSERT_OP 'i' 2148 #define MODREMOVE_OP 'r' 2149 2150 /* 2151 * To insert a module to the stream of the interface. It is just a 2152 * wrapper. The real function is modop(). 2153 */ 2154 /* ARGSUSED */ 2155 static int 2156 modinsert(char *arg, int64_t param) 2157 { 2158 return (modop(arg, MODINSERT_OP)); 2159 } 2160 2161 /* 2162 * To remove a module from the stream of the interface. It is just a 2163 * wrapper. The real function is modop(). 2164 */ 2165 /* ARGSUSED */ 2166 static int 2167 modremove(char *arg, int64_t param) 2168 { 2169 return (modop(arg, MODREMOVE_OP)); 2170 } 2171 2172 /* 2173 * Open a stream on /dev/udp, pop off all undesired modules (note that 2174 * the user may have configured autopush to add modules above or below 2175 * udp), and push the arp module onto raw IP. 2176 */ 2177 static int 2178 open_arp_on_udp(char *udp_dev_name) 2179 { 2180 int fd; 2181 boolean_t popped; 2182 2183 if ((fd = open(udp_dev_name, O_RDWR)) == -1) { 2184 Perror2("open", udp_dev_name); 2185 return (-1); 2186 } 2187 errno = 0; 2188 popped = _B_FALSE; 2189 while (ioctl(fd, I_POP, 0) != -1) 2190 popped = _B_TRUE; 2191 if (!popped) { 2192 Perror2("cannot pop", udp_dev_name); 2193 } else if (errno != EINVAL) { 2194 Perror2("pop", udp_dev_name); 2195 } else if (ioctl(fd, I_PUSH, ARP_MOD_NAME) == -1) { 2196 Perror2("arp PUSH", udp_dev_name); 2197 } else { 2198 return (fd); 2199 } 2200 (void) close(fd); 2201 return (-1); 2202 } 2203 2204 /* 2205 * Helper function for mod*() functions. It gets a fd to the lower IP 2206 * stream and I_PUNLINK's the lower stream. It also initializes the 2207 * global variable lifr. 2208 * 2209 * Param: 2210 * int *udp_fd: (referenced) fd to /dev/udp (upper IP stream). 2211 * int *fd: (referenced) fd to the lower IP stream. 2212 * 2213 * Return: 2214 * -1 if operation fails, 0 otherwise. 2215 * 2216 * Please see the big block comment above plumb_one_device() 2217 * for the logic of the PLINK/PUNLINK 2218 */ 2219 static int 2220 ip_domux2fd(int *muxfd, int *ipfd_lowstr, int *arpfd_lowstr, int *orig_arpid) 2221 { 2222 int ip_fd; 2223 uint64_t flags; 2224 char *udp_dev_name; 2225 char *ip_dev_name; 2226 2227 *orig_arpid = 0; 2228 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2229 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 2230 Perror0_exit("status: SIOCGLIFFLAGS"); 2231 } 2232 flags = lifr.lifr_flags; 2233 if (flags & IFF_IPV4) { 2234 udp_dev_name = UDP_DEV_NAME; 2235 ip_dev_name = IP_DEV_NAME; 2236 } else if (flags & IFF_IPV6) { 2237 udp_dev_name = UDP6_DEV_NAME; 2238 ip_dev_name = IP6_DEV_NAME; 2239 } else { 2240 return (-1); 2241 } 2242 2243 if ((ip_fd = open(ip_dev_name, O_RDWR)) < 0) { 2244 Perror2("open", ip_dev_name); 2245 return (-1); 2246 } 2247 if (ioctl(ip_fd, SIOCGLIFMUXID, (caddr_t)&lifr) < 0) { 2248 Perror2("SIOCGLIFMUXID", ip_dev_name); 2249 return (-1); 2250 } 2251 if (debug > 0) { 2252 (void) printf("ARP_muxid %d IP_muxid %d\n", 2253 lifr.lifr_arp_muxid, lifr.lifr_ip_muxid); 2254 } 2255 2256 if ((*muxfd = open_arp_on_udp(udp_dev_name)) == -1) 2257 return (-1); 2258 2259 if (lifr.lifr_arp_muxid != 0) { 2260 if ((*arpfd_lowstr = ioctl(*muxfd, _I_MUXID2FD, 2261 lifr.lifr_arp_muxid)) < 0) { 2262 if ((errno == EINVAL) && 2263 (flags & (IFF_NOARP | IFF_IPV6))) { 2264 /* 2265 * Some plumbing utilities set the muxid to 2266 * -1 or some invalid value to signify that 2267 * there is no arp stream. Set the muxid to 0 2268 * before trying to unplumb the IP stream. 2269 * IP does not allow the IP stream to be 2270 * unplumbed if it sees a non-null arp muxid, 2271 * for consistency of IP-ARP streams. 2272 */ 2273 *orig_arpid = lifr.lifr_arp_muxid; 2274 lifr.lifr_arp_muxid = 0; 2275 (void) ioctl(*muxfd, SIOCSLIFMUXID, 2276 (caddr_t)&lifr); 2277 *arpfd_lowstr = -1; 2278 } else { 2279 Perror0("_I_MUXID2FD"); 2280 return (-1); 2281 } 2282 } else if (ioctl(*muxfd, I_PUNLINK, 2283 lifr.lifr_arp_muxid) < 0) { 2284 Perror2("I_PUNLINK", udp_dev_name); 2285 return (-1); 2286 } 2287 } else { 2288 *arpfd_lowstr = -1; 2289 } 2290 2291 if ((*ipfd_lowstr = ioctl(*muxfd, _I_MUXID2FD, 2292 lifr.lifr_ip_muxid)) < 0) { 2293 Perror0("_I_MUXID2FD"); 2294 /* Undo any changes we made */ 2295 if (*orig_arpid != 0) { 2296 lifr.lifr_arp_muxid = *orig_arpid; 2297 (void) ioctl(*muxfd, SIOCSLIFMUXID, (caddr_t)&lifr); 2298 } 2299 return (-1); 2300 } 2301 if (ioctl(*muxfd, I_PUNLINK, lifr.lifr_ip_muxid) < 0) { 2302 Perror2("I_PUNLINK", udp_dev_name); 2303 /* Undo any changes we made */ 2304 if (*orig_arpid != 0) { 2305 lifr.lifr_arp_muxid = *orig_arpid; 2306 (void) ioctl(*muxfd, SIOCSLIFMUXID, (caddr_t)&lifr); 2307 } 2308 return (-1); 2309 } 2310 return (0); 2311 } 2312 2313 /* 2314 * Helper function for mod*() functions. It I_PLINK's back the upper and 2315 * lower IP streams. Note that this function must be called after 2316 * ip_domux2fd(). In ip_domux2fd(), the global variable lifr is initialized 2317 * and ip_plink() needs information in lifr. So ip_domux2fd() and ip_plink() 2318 * must be called in pairs. 2319 * 2320 * Param: 2321 * int udp_fd: fd to /dev/udp (upper IP stream). 2322 * int fd: fd to the lower IP stream. 2323 * 2324 * Return: 2325 * -1 if operation fails, 0 otherwise. 2326 * 2327 * Please see the big block comment above plumb_one_device() 2328 * for the logic of the PLINK/PUNLINK 2329 */ 2330 static int 2331 ip_plink(int muxfd, int ipfd_lowstr, int arpfd_lowstr, int orig_arpid) 2332 { 2333 int ip_muxid; 2334 2335 ip_muxid = ioctl(muxfd, I_PLINK, ipfd_lowstr); 2336 if (ip_muxid < 0) { 2337 Perror2("I_PLINK", UDP_DEV_NAME); 2338 return (-1); 2339 } 2340 2341 /* 2342 * If there is an arp stream, plink it. If there is no 2343 * arp stream, then it is possible that the plumbing 2344 * utility could have stored any value in the arp_muxid. 2345 * If so, restore it from orig_arpid. 2346 */ 2347 if (arpfd_lowstr != -1) { 2348 if (ioctl(muxfd, I_PLINK, arpfd_lowstr) < 0) { 2349 Perror2("I_PLINK", UDP_DEV_NAME); 2350 return (-1); 2351 } 2352 } else if (orig_arpid != 0) { 2353 /* Undo the changes we did in ip_domux2fd */ 2354 lifr.lifr_arp_muxid = orig_arpid; 2355 lifr.lifr_ip_muxid = ip_muxid; 2356 (void) ioctl(muxfd, SIOCSLIFMUXID, (caddr_t)&lifr); 2357 } 2358 2359 return (0); 2360 } 2361 2362 /* 2363 * The real function to perform module insertion/removal. 2364 * 2365 * Param: 2366 * char *arg: the argument string module_name@position 2367 * char op: operation, either MODINSERT_OP or MODREMOVE_OP. 2368 * 2369 * Return: 2370 * Before doing ip_domux2fd(), this function calls exit(1) in case of 2371 * error. After ip_domux2fd() is done, it returns -1 for error, 0 2372 * otherwise. 2373 */ 2374 static int 2375 modop(char *arg, char op) 2376 { 2377 char *pos_p; 2378 int muxfd; 2379 int ipfd_lowstr; /* IP stream (lower stream of mux) to be plinked */ 2380 int arpfd_lowstr; /* ARP stream (lower stream of mux) to be plinked */ 2381 struct strmodconf mod; 2382 char *at_char = "@"; 2383 char *arg_str; 2384 int orig_arpid; 2385 2386 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2387 2388 /* Need to save the original string for -a option. */ 2389 if ((arg_str = malloc(strlen(arg) + 1)) == NULL) { 2390 Perror0("cannot malloc"); 2391 return (-1); 2392 } 2393 (void) strcpy(arg_str, arg); 2394 2395 if (*arg_str == *at_char) { 2396 (void) fprintf(stderr, 2397 "ifconfig: must supply a module name\n"); 2398 exit(1); 2399 } 2400 mod.mod_name = strtok(arg_str, at_char); 2401 if (strlen(mod.mod_name) > FMNAMESZ) { 2402 (void) fprintf(stderr, "ifconfig: module name too long: %s\n", 2403 mod.mod_name); 2404 exit(1); 2405 } 2406 2407 /* 2408 * Need to make sure that the core TCP/IP stack modules are not 2409 * removed. Otherwise, "bad" things can happen. If a module 2410 * is removed and inserted back, it loses its old state. But 2411 * the modules above it still have the old state. E.g. IP assumes 2412 * fast data path while tunnel after re-inserted assumes that it can 2413 * receive M_DATA only in fast data path for which it does not have 2414 * any state. This is a general caveat of _I_REMOVE/_I_INSERT. 2415 */ 2416 if (op == MODREMOVE_OP && 2417 (strcmp(mod.mod_name, ARP_MOD_NAME) == 0 || 2418 strcmp(mod.mod_name, IP_MOD_NAME) == 0 || 2419 strcmp(mod.mod_name, TUN_NAME) == 0 || 2420 strcmp(mod.mod_name, ATUN_NAME) == 0 || 2421 strcmp(mod.mod_name, TUN6TO4_NAME) == 0)) { 2422 (void) fprintf(stderr, "ifconfig: cannot remove %s\n", 2423 mod.mod_name); 2424 exit(1); 2425 } 2426 2427 if ((pos_p = strtok(NULL, at_char)) == NULL) { 2428 (void) fprintf(stderr, "ifconfig: must supply a position\n"); 2429 exit(1); 2430 } 2431 mod.pos = atoi(pos_p); 2432 2433 if (ip_domux2fd(&muxfd, &ipfd_lowstr, &arpfd_lowstr, 2434 &orig_arpid) < 0) { 2435 free(arg_str); 2436 return (-1); 2437 } 2438 switch (op) { 2439 case MODINSERT_OP: 2440 if (debug > 0) { 2441 (void) printf("Inserting module %s at %d\n", 2442 mod.mod_name, mod.pos); 2443 } 2444 if (ioctl(ipfd_lowstr, _I_INSERT, (caddr_t)&mod) < 0) { 2445 Perror2("fail to insert module", mod.mod_name); 2446 } 2447 break; 2448 case MODREMOVE_OP: 2449 if (debug > 0) { 2450 (void) printf("Removing module %s at %d\n", 2451 mod.mod_name, mod.pos); 2452 } 2453 if (ioctl(ipfd_lowstr, _I_REMOVE, (caddr_t)&mod) < 0) { 2454 Perror2("fail to remove module", mod.mod_name); 2455 } 2456 break; 2457 default: 2458 /* Should never get to here. */ 2459 (void) fprintf(stderr, "Unknown operation\n"); 2460 break; 2461 } 2462 free(arg_str); 2463 return (ip_plink(muxfd, ipfd_lowstr, arpfd_lowstr, orig_arpid)); 2464 } 2465 2466 /* 2467 * Set tunnel source address 2468 */ 2469 /* ARGSUSED */ 2470 static int 2471 setiftsrc(char *addr, int64_t param) 2472 { 2473 return (settaddr(addr, icfg_set_tunnel_src)); 2474 } 2475 2476 /* 2477 * Set tunnel destination address 2478 */ 2479 /* ARGSUSED */ 2480 static int 2481 setiftdst(char *addr, int64_t param) 2482 { 2483 return (settaddr(addr, icfg_set_tunnel_dest)); 2484 } 2485 2486 /* 2487 * sets tunnels src|dst address. settaddr() expects the following: 2488 * addr: Points to a printable string containing the address to be 2489 * set, e.g. 129.153.128.110. 2490 * fn: Pointer to a libinetcfg routine that will do the actual work. 2491 * The only valid functions are icfg_set_tunnel_src and 2492 * icfg_set_tunnel_dest. 2493 */ 2494 static int 2495 settaddr(char *addr, 2496 int (*fn)(icfg_handle_t, const struct sockaddr *, socklen_t)) 2497 { 2498 icfg_handle_t handle; 2499 icfg_if_t interface; 2500 struct sockaddr_storage laddr; 2501 int lower; 2502 int rc; 2503 2504 if (strchr(name, ':') != NULL) { 2505 errno = EPERM; 2506 Perror0_exit("Tunnel params on logical interfaces"); 2507 } 2508 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2509 interface.if_protocol = SOCKET_AF(af); 2510 2511 /* Open interface. */ 2512 if ((rc = icfg_open(&handle, &interface)) != ICFG_SUCCESS) 2513 Perror0_exit((char *)icfg_errmsg(rc)); 2514 2515 rc = icfg_get_tunnel_lower(handle, &lower); 2516 if (rc != ICFG_SUCCESS) 2517 Perror0_exit((char *)icfg_errmsg(rc)); 2518 2519 if (lower == AF_INET) { 2520 in_getaddr(addr, (struct sockaddr *)&laddr, NULL); 2521 } else { 2522 in6_getaddr(addr, (struct sockaddr *)&laddr, NULL); 2523 } 2524 2525 /* Call fn to do the real work, and close the interface. */ 2526 rc = (*fn)(handle, (struct sockaddr *)&laddr, 2527 sizeof (struct sockaddr_storage)); 2528 icfg_close(handle); 2529 2530 if (rc != ICFG_SUCCESS) 2531 Perror0_exit((char *)icfg_errmsg(rc)); 2532 2533 return (0); 2534 } 2535 2536 /* Set tunnel encapsulation limit. */ 2537 /* ARGSUSED */ 2538 static int 2539 set_tun_encap_limit(char *arg, int64_t param) 2540 { 2541 short limit; 2542 icfg_if_t interface; 2543 icfg_handle_t handle; 2544 int rc; 2545 2546 if (strchr(name, ':') != NULL) { 2547 errno = EPERM; 2548 Perror0_exit("Tunnel params on logical interfaces"); 2549 } 2550 2551 if ((sscanf(arg, "%hd", &limit) != 1) || (limit < 0) || 2552 (limit > 255)) { 2553 errno = EINVAL; 2554 Perror0_exit("Invalid encapsulation limit"); 2555 } 2556 2557 /* Open interface for configuration. */ 2558 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2559 interface.if_protocol = SOCKET_AF(af); 2560 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2561 Perror0_exit("couldn't open interface"); 2562 2563 rc = icfg_set_tunnel_encaplimit(handle, (int)limit); 2564 icfg_close(handle); 2565 2566 if (rc != ICFG_SUCCESS) 2567 Perror0_exit("Could not configure tunnel encapsulation limit"); 2568 2569 return (0); 2570 } 2571 2572 /* Disable encapsulation limit. */ 2573 /* ARGSUSED */ 2574 static int 2575 clr_tun_encap_limit(char *arg, int64_t param) 2576 { 2577 icfg_if_t interface; 2578 icfg_handle_t handle; 2579 int rc; 2580 2581 if (strchr(name, ':') != NULL) { 2582 errno = EPERM; 2583 Perror0_exit("Tunnel params on logical interfaces"); 2584 } 2585 2586 /* Open interface for configuration. */ 2587 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2588 interface.if_protocol = SOCKET_AF(af); 2589 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2590 Perror0_exit("couldn't open interface"); 2591 2592 rc = icfg_set_tunnel_encaplimit(handle, -1); 2593 icfg_close(handle); 2594 2595 if (rc != ICFG_SUCCESS) 2596 Perror0_exit((char *)icfg_errmsg(rc)); 2597 2598 return (0); 2599 } 2600 2601 /* Set tunnel hop limit. */ 2602 /* ARGSUSED */ 2603 static int 2604 set_tun_hop_limit(char *arg, int64_t param) 2605 { 2606 unsigned short limit; 2607 icfg_if_t interface; 2608 icfg_handle_t handle; 2609 int rc; 2610 2611 if (strchr(name, ':') != NULL) { 2612 errno = EPERM; 2613 Perror0_exit("Tunnel params on logical interfaces"); 2614 } 2615 2616 /* 2617 * Check limit here since it's really only an 8-bit unsigned quantity. 2618 */ 2619 if ((sscanf(arg, "%hu", &limit) != 1) || (limit > 255)) { 2620 errno = EINVAL; 2621 Perror0_exit("Invalid hop limit"); 2622 } 2623 2624 /* Open interface for configuration. */ 2625 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 2626 interface.if_protocol = SOCKET_AF(af); 2627 if (icfg_open(&handle, &interface) != ICFG_SUCCESS) 2628 Perror0_exit("couldn't open interface"); 2629 2630 rc = icfg_set_tunnel_hoplimit(handle, (uint8_t)limit); 2631 icfg_close(handle); 2632 2633 if (rc != ICFG_SUCCESS) 2634 Perror0_exit("Could not configure tunnel hop limit"); 2635 2636 return (0); 2637 } 2638 2639 /* Set zone ID */ 2640 static int 2641 setzone(char *arg, int64_t param) 2642 { 2643 zoneid_t zoneid = GLOBAL_ZONEID; 2644 2645 if (param == NEXTARG) { 2646 /* zone must be active */ 2647 if ((zoneid = getzoneidbyname(arg)) == -1) { 2648 (void) fprintf(stderr, 2649 "ifconfig: unknown zone '%s'\n", arg); 2650 exit(1); 2651 } 2652 } 2653 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2654 lifr.lifr_zoneid = zoneid; 2655 if (ioctl(s, SIOCSLIFZONE, (caddr_t)&lifr) == -1) 2656 Perror0_exit("SIOCSLIFZONE"); 2657 return (0); 2658 } 2659 2660 /* Put interface into all zones */ 2661 /* ARGSUSED */ 2662 static int 2663 setallzones(char *arg, int64_t param) 2664 { 2665 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2666 lifr.lifr_zoneid = ALL_ZONES; 2667 if (ioctl(s, SIOCSLIFZONE, (caddr_t)&lifr) == -1) 2668 Perror0_exit("SIOCSLIFZONE"); 2669 return (0); 2670 } 2671 2672 /* Set source address to use */ 2673 /* ARGSUSED */ 2674 static int 2675 setifsrc(char *arg, int64_t param) 2676 { 2677 uint_t ifindex = 0; 2678 int rval; 2679 2680 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2681 2682 /* 2683 * Argument can be either an interface name or "none". The latter means 2684 * that any previous selection is cleared. 2685 */ 2686 2687 rval = strcmp(arg, name); 2688 if (rval == 0) { 2689 (void) fprintf(stderr, 2690 "ifconfig: Cannot specify same interface for usesrc" 2691 " group\n"); 2692 exit(1); 2693 } 2694 2695 rval = strcmp(arg, NONE_STR); 2696 if (rval != 0) { 2697 if ((ifindex = if_nametoindex(arg)) == 0) { 2698 (void) strncpy(lifr.lifr_name, arg, LIFNAMSIZ); 2699 Perror0_exit("Could not get interface index"); 2700 } 2701 lifr.lifr_index = ifindex; 2702 } else { 2703 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) != 0) 2704 Perror0_exit("Not a valid usesrc consumer"); 2705 lifr.lifr_index = 0; 2706 } 2707 2708 if (debug) 2709 (void) printf("setifsrc: lifr_name %s, lifr_index %d\n", 2710 lifr.lifr_name, lifr.lifr_index); 2711 2712 if (ioctl(s, SIOCSLIFUSESRC, (caddr_t)&lifr) == -1) { 2713 if (rval == 0) 2714 Perror0_exit("Cannot reset usesrc group"); 2715 else 2716 Perror0_exit("Could not set source interface"); 2717 } 2718 2719 return (0); 2720 } 2721 2722 /* 2723 * Print the interface status line associated with `ifname' 2724 */ 2725 static void 2726 ifstatus(const char *ifname) 2727 { 2728 uint64_t flags; 2729 char if_usesrc_name[LIFNAMSIZ]; 2730 char *newbuf; 2731 int n, numifs, rval = 0; 2732 struct lifreq *lifrp; 2733 struct lifsrcof lifs; 2734 2735 (void) strncpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); 2736 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 2737 Perror0_exit("status: SIOCGLIFFLAGS"); 2738 } 2739 flags = lifr.lifr_flags; 2740 2741 /* 2742 * In V4 compatibility mode, we don't print the IFF_IPV4 flag or 2743 * interfaces with IFF_IPV6 set. 2744 */ 2745 if (v4compat) { 2746 flags &= ~IFF_IPV4; 2747 if (flags & IFF_IPV6) 2748 return; 2749 } 2750 2751 (void) printf("%s: ", ifname); 2752 print_flags(flags); 2753 2754 (void) strncpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name)); 2755 if (ioctl(s, SIOCGLIFMETRIC, (caddr_t)&lifr) < 0) { 2756 Perror0_exit("status: SIOCGLIFMETRIC"); 2757 } else { 2758 if (lifr.lifr_metric) 2759 (void) printf(" metric %d", lifr.lifr_metric); 2760 } 2761 if (ioctl(s, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) 2762 (void) printf(" mtu %d", lifr.lifr_metric); 2763 2764 /* don't print index or zone when in compatibility mode */ 2765 if (!v4compat) { 2766 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) 2767 (void) printf(" index %d", lifr.lifr_index); 2768 if (ioctl(s, SIOCGLIFZONE, (caddr_t)&lifr) >= 0 && 2769 lifr.lifr_zoneid != getzoneid()) { 2770 char zone_name[ZONENAME_MAX]; 2771 2772 if (lifr.lifr_zoneid == ALL_ZONES) { 2773 (void) printf("\n\tall-zones"); 2774 } else if (getzonenamebyid(lifr.lifr_zoneid, zone_name, 2775 sizeof (zone_name)) < 0) { 2776 (void) printf("\n\tzone %d", lifr.lifr_zoneid); 2777 } else { 2778 (void) printf("\n\tzone %s", zone_name); 2779 } 2780 } 2781 } 2782 2783 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) { 2784 lifs.lifs_ifindex = lifr.lifr_index; 2785 2786 /* 2787 * Find the number of interfaces that use this interfaces' 2788 * address as a source address 2789 */ 2790 lifs.lifs_buf = NULL; 2791 lifs.lifs_maxlen = 0; 2792 for (;;) { 2793 /* The first pass will give the bufsize we need */ 2794 rval = ioctl(s, SIOCGLIFSRCOF, (char *)&lifs); 2795 if (rval < 0) { 2796 if (lifs.lifs_buf != NULL) { 2797 free(lifs.lifs_buf); 2798 lifs.lifs_buf = NULL; 2799 } 2800 lifs.lifs_len = 0; 2801 break; 2802 } 2803 if (lifs.lifs_len <= lifs.lifs_maxlen) 2804 break; 2805 /* Use kernel's size + a small margin to avoid loops */ 2806 lifs.lifs_maxlen = lifs.lifs_len + 2807 5 * sizeof (struct lifreq); 2808 /* For the first pass, realloc acts like malloc */ 2809 newbuf = realloc(lifs.lifs_buf, lifs.lifs_maxlen); 2810 if (newbuf == NULL) { 2811 if (lifs.lifs_buf != NULL) { 2812 free(lifs.lifs_buf); 2813 lifs.lifs_buf = NULL; 2814 } 2815 lifs.lifs_len = 0; 2816 break; 2817 } 2818 lifs.lifs_buf = newbuf; 2819 } 2820 2821 2822 numifs = lifs.lifs_len / sizeof (struct lifreq); 2823 if (numifs > 0) { 2824 lifrp = lifs.lifs_req; 2825 (void) printf("\n\tsrcof"); 2826 for (n = numifs; n > 0; n--, lifrp++) { 2827 (void) printf(" %s", lifrp->lifr_name); 2828 } 2829 } 2830 2831 if (lifs.lifs_buf != NULL) 2832 free(lifs.lifs_buf); 2833 } 2834 2835 /* Find the interface whose source address this interface uses */ 2836 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) == 0) { 2837 if (lifr.lifr_index != 0) { 2838 if (if_indextoname(lifr.lifr_index, 2839 if_usesrc_name) == NULL) { 2840 (void) printf("\n\tusesrc ifIndex %d", 2841 lifr.lifr_index); 2842 } else { 2843 (void) printf("\n\tusesrc %s", if_usesrc_name); 2844 } 2845 } 2846 } 2847 2848 (void) putchar('\n'); 2849 } 2850 2851 2852 /* 2853 * Print the status of the interface. If an address family was 2854 * specified, show it and it only; otherwise, show them all. 2855 */ 2856 static void 2857 status(void) 2858 { 2859 struct afswtch *p = afp; 2860 uint64_t flags; 2861 2862 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2863 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 2864 Perror0_exit("status: SIOCGLIFFLAGS"); 2865 } 2866 2867 flags = lifr.lifr_flags; 2868 2869 /* 2870 * Only print the interface status if the address family matches 2871 * the interface family flag. 2872 */ 2873 if (p != NULL) { 2874 if (((p->af_af == AF_INET6) && (flags & IFF_IPV4)) || 2875 ((p->af_af == AF_INET) && (flags & IFF_IPV6))) 2876 return; 2877 } 2878 2879 /* 2880 * In V4 compatibility mode, don't print IFF_IPV6 interfaces. 2881 */ 2882 if (v4compat && (flags & IFF_IPV6)) 2883 return; 2884 2885 ifstatus(name); 2886 2887 if (p != NULL) { 2888 (*p->af_status)(1, flags); 2889 } else { 2890 for (p = afs; p->af_name; p++) { 2891 (void) close(s); 2892 s = socket(SOCKET_AF(p->af_af), SOCK_DGRAM, 0); 2893 /* set global af for use in p->af_status */ 2894 af = p->af_af; 2895 if (s == -1) { 2896 Perror0_exit("socket"); 2897 } 2898 (*p->af_status)(0, flags); 2899 } 2900 2901 /* 2902 * Historically, 'ether' has been an address family, 2903 * so print it here. 2904 */ 2905 print_ifether(name); 2906 } 2907 } 2908 2909 /* 2910 * Print the status of the interface in a format that can be used to 2911 * reconfigure the interface later. Code stolen from status() above. 2912 */ 2913 /* ARGSUSED */ 2914 static int 2915 configinfo(char *null, int64_t param) 2916 { 2917 struct afswtch *p = afp; 2918 uint64_t flags; 2919 char phydevname[LIFNAMSIZ]; 2920 char if_usesrc_name[LIFNAMSIZ]; 2921 char *cp; 2922 2923 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2924 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 2925 Perror0_exit("status: SIOCGLIFFLAGS"); 2926 } 2927 flags = lifr.lifr_flags; 2928 2929 if (debug) { 2930 (void) printf("configinfo: name %s flags 0x%llx af_af %d\n", 2931 name, flags, p != NULL ? p->af_af : -1); 2932 } 2933 2934 /* remove LIF component */ 2935 (void) strncpy(phydevname, name, sizeof (phydevname)); 2936 cp = strchr(phydevname, ':'); 2937 if (cp) { 2938 *cp = 0; 2939 } 2940 phydevname[sizeof (phydevname) - 1] = '\0'; 2941 2942 /* 2943 * if the interface is IPv4 2944 * if we have a IPv6 address family restriction return 2945 * so it won't print 2946 * if we are in IPv4 compatibility mode, clear out IFF_IPV4 2947 * so we don't print it. 2948 */ 2949 if (flags & IFF_IPV4) { 2950 if (p && p->af_af == AF_INET6) 2951 return (-1); 2952 if (v4compat) 2953 flags &= ~IFF_IPV4; 2954 2955 (void) printf("%s inet plumb", phydevname); 2956 } else if (flags & IFF_IPV6) { 2957 /* 2958 * else if the interface is IPv6 2959 * if we have a IPv4 address family restriction return 2960 * or we are in IPv4 compatibiltiy mode, return. 2961 */ 2962 if (p && p->af_af == AF_INET) 2963 return (-1); 2964 if (v4compat) 2965 return (-1); 2966 2967 (void) printf("%s inet6 plumb", phydevname); 2968 } 2969 2970 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 2971 if (ioctl(s, SIOCGLIFMETRIC, (caddr_t)&lifr) < 0) { 2972 Perror0_exit("configinfo: SIOCGLIFMETRIC"); 2973 } else { 2974 if (lifr.lifr_metric) 2975 (void) printf(" metric %d ", lifr.lifr_metric); 2976 } 2977 if (((flags & (IFF_VIRTUAL|IFF_LOOPBACK)) != IFF_VIRTUAL) && 2978 ioctl(s, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) 2979 (void) printf(" mtu %d", lifr.lifr_metric); 2980 2981 /* don't print index when in compatibility mode */ 2982 if (!v4compat) { 2983 if (ioctl(s, SIOCGLIFINDEX, (caddr_t)&lifr) >= 0) 2984 (void) printf(" index %d", lifr.lifr_index); 2985 } 2986 2987 if (ioctl(s, SIOCGLIFUSESRC, (caddr_t)&lifr) == 0) { 2988 if (lifr.lifr_index != 0) { 2989 if (if_indextoname(lifr.lifr_index, 2990 if_usesrc_name) != NULL) { 2991 (void) printf(" usesrc %s", if_usesrc_name); 2992 } 2993 } 2994 } 2995 2996 if (p != NULL) { 2997 (*p->af_configinfo)(1, flags); 2998 } else { 2999 for (p = afs; p->af_name; p++) { 3000 (void) close(s); 3001 s = socket(SOCKET_AF(p->af_af), SOCK_DGRAM, 0); 3002 /* set global af for use in p->af_configinfo */ 3003 af = p->af_af; 3004 if (s == -1) { 3005 Perror0_exit("socket"); 3006 } 3007 (*p->af_configinfo)(0, flags); 3008 } 3009 } 3010 3011 (void) printf("\n"); 3012 3013 return (0); 3014 } 3015 3016 static void 3017 print_tsec(struct iftun_req *tparams) 3018 { 3019 ipsec_req_t *ipsr; 3020 3021 (void) printf("\ttunnel security settings "); 3022 /* 3023 * Deal with versioning, for now just point 3024 * an ipsec_req_t at ifta_secinfo. If versions 3025 * change, something else will overlay ifta_secinfo. 3026 */ 3027 assert(tparams->ifta_vers == IFTUN_VERSION); 3028 3029 ipsr = (ipsec_req_t *)(&tparams->ifta_secinfo); 3030 if (ipsr->ipsr_ah_req & IPSEC_PREF_REQUIRED) { 3031 (void) printf("ah (%s) ", 3032 rparsealg(ipsr->ipsr_auth_alg, IPSEC_PROTO_AH)); 3033 } 3034 if (ipsr->ipsr_esp_req & IPSEC_PREF_REQUIRED) { 3035 (void) printf("esp (%s", 3036 rparsealg(ipsr->ipsr_esp_alg, IPSEC_PROTO_ESP)); 3037 (void) printf("/%s)", 3038 rparsealg(ipsr->ipsr_esp_auth_alg, IPSEC_PROTO_AH)); 3039 } 3040 (void) printf("\n"); 3041 } 3042 3043 static void 3044 tun_status(void) 3045 { 3046 icfg_if_t interface; 3047 int rc; 3048 icfg_handle_t handle; 3049 int protocol; 3050 char srcbuf[INET6_ADDRSTRLEN]; 3051 char dstbuf[INET6_ADDRSTRLEN]; 3052 boolean_t tabbed; 3053 uint8_t hoplimit; 3054 int16_t encaplimit; 3055 struct sockaddr_storage taddr; 3056 socklen_t socklen = sizeof (taddr); 3057 3058 (void) strncpy(interface.if_name, name, sizeof (interface.if_name)); 3059 interface.if_protocol = SOCKET_AF(af); 3060 if ((rc = icfg_open(&handle, &interface)) != ICFG_SUCCESS) 3061 Perror0_exit((char *)icfg_errmsg(rc)); 3062 3063 /* 3064 * only print tunnel info for lun 0. If ioctl fails, assume 3065 * we are not a tunnel 3066 */ 3067 if (strchr(name, ':') != NULL || 3068 icfg_get_tunnel_lower(handle, &protocol) != ICFG_SUCCESS) { 3069 icfg_close(handle); 3070 return; 3071 } 3072 3073 switch (protocol) { 3074 case AF_INET: 3075 (void) printf("\tinet"); 3076 break; 3077 case AF_INET6: 3078 (void) printf("\tinet6"); 3079 break; 3080 default: 3081 Perror0_exit("\ttunnel: Illegal lower stream\n\t"); 3082 break; 3083 } 3084 3085 rc = icfg_get_tunnel_src(handle, (struct sockaddr *)&taddr, &socklen); 3086 if (rc == ICFG_NOT_SET) { 3087 (void) strlcpy(srcbuf, (protocol == AF_INET) ? "0.0.0.0" : 3088 "::", sizeof (srcbuf)); 3089 } else if (rc != ICFG_SUCCESS) { 3090 Perror0_exit((char *)icfg_errmsg(rc)); 3091 } else { 3092 rc = icfg_sockaddr_to_str(protocol, (struct sockaddr *)&taddr, 3093 srcbuf, sizeof (srcbuf)); 3094 if (rc != ICFG_SUCCESS) { 3095 Perror0_exit((char *)icfg_errmsg(rc)); 3096 } 3097 } 3098 3099 (void) printf(" tunnel src %s ", srcbuf); 3100 3101 rc = icfg_get_tunnel_dest(handle, (struct sockaddr *)&taddr, &socklen); 3102 if (rc == ICFG_NOT_SET) { 3103 (void) printf("\n"); 3104 } else { 3105 rc = icfg_sockaddr_to_str(protocol, (struct sockaddr *)&taddr, 3106 dstbuf, sizeof (dstbuf)); 3107 if (rc != ICFG_SUCCESS) { 3108 Perror0_exit((char *)icfg_errmsg(rc)); 3109 } 3110 (void) printf("tunnel dst %s\n", dstbuf); 3111 } 3112 3113 if (handle->ifh_tunnel_params != NULL && 3114 (handle->ifh_tunnel_params->ifta_flags & IFTUN_SECURITY)) 3115 print_tsec(handle->ifh_tunnel_params); 3116 3117 /* 3118 * tabbed indicates tabbed and printed. Use it tell us whether 3119 * to tab and that we've printed something here, so we need a 3120 * newline 3121 */ 3122 tabbed = _B_FALSE; 3123 3124 if (icfg_get_tunnel_hoplimit(handle, &hoplimit) == ICFG_SUCCESS) { 3125 (void) printf("\ttunnel hop limit %d ", hoplimit); 3126 tabbed = _B_TRUE; 3127 } 3128 3129 if ((protocol == AF_INET6) && 3130 (icfg_get_tunnel_encaplimit(handle, &encaplimit) == 3131 ICFG_SUCCESS)) { 3132 if (!tabbed) { 3133 (void) printf("\t"); 3134 tabbed = _B_TRUE; 3135 } 3136 if (encaplimit >= 0) { 3137 (void) printf("tunnel encapsulation limit %d", 3138 encaplimit); 3139 } else { 3140 (void) printf("tunnel encapsulation limit disabled"); 3141 } 3142 } 3143 3144 if (tabbed) 3145 (void) printf("\n"); 3146 3147 icfg_close(handle); 3148 } 3149 3150 static void 3151 in_status(int force, uint64_t flags) 3152 { 3153 struct sockaddr_in *sin, *laddr; 3154 struct sockaddr_in netmask = { AF_INET }; 3155 3156 if (debug) 3157 (void) printf("in_status(%s) flags 0x%llx\n", name, flags); 3158 3159 /* only print status for IPv4 interfaces */ 3160 if (!(flags & IFF_IPV4)) 3161 return; 3162 3163 /* if the interface is a tunnel, print the tunnel status */ 3164 tun_status(); 3165 3166 if (!(flags & IFF_NOLOCAL)) { 3167 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3168 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3169 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3170 errno == ENXIO) { 3171 if (!force) 3172 return; 3173 (void) memset(&lifr.lifr_addr, 0, 3174 sizeof (lifr.lifr_addr)); 3175 } else 3176 Perror0_exit("in_status: SIOCGLIFADDR"); 3177 } 3178 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3179 (void) printf("\tinet %s ", inet_ntoa(sin->sin_addr)); 3180 laddr = sin; 3181 } else { 3182 (void) printf("\tinet "); 3183 } 3184 3185 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3186 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3187 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3188 errno == ENXIO) { 3189 if (!force) 3190 return; 3191 (void) memset(&lifr.lifr_addr, 0, 3192 sizeof (lifr.lifr_addr)); 3193 } else { 3194 Perror0_exit("in_status: SIOCGLIFSUBNET"); 3195 } 3196 } 3197 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3198 if ((flags & IFF_NOLOCAL) || 3199 sin->sin_addr.s_addr != laddr->sin_addr.s_addr) { 3200 (void) printf("subnet %s/%d ", inet_ntoa(sin->sin_addr), 3201 lifr.lifr_addrlen); 3202 } 3203 if (sin->sin_family != AF_INET) { 3204 (void) printf("Wrong family: %d\n", sin->sin_family); 3205 } 3206 3207 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3208 if (ioctl(s, SIOCGLIFNETMASK, (caddr_t)&lifr) < 0) { 3209 if (errno != EADDRNOTAVAIL) 3210 Perror0_exit("in_status: SIOCGLIFNETMASK"); 3211 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 3212 } else 3213 netmask.sin_addr = 3214 ((struct sockaddr_in *)&lifr.lifr_addr)->sin_addr; 3215 if (flags & IFF_POINTOPOINT) { 3216 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3217 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3218 if (errno == EADDRNOTAVAIL) 3219 (void) memset(&lifr.lifr_addr, 0, 3220 sizeof (lifr.lifr_addr)); 3221 else 3222 Perror0_exit("in_status: SIOCGLIFDSTADDR"); 3223 } 3224 sin = (struct sockaddr_in *)&lifr.lifr_dstaddr; 3225 (void) printf("--> %s ", inet_ntoa(sin->sin_addr)); 3226 } 3227 (void) printf("netmask %x ", ntohl(netmask.sin_addr.s_addr)); 3228 if (flags & IFF_BROADCAST) { 3229 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3230 if (ioctl(s, SIOCGLIFBRDADDR, (caddr_t)&lifr) < 0) { 3231 if (errno == EADDRNOTAVAIL) 3232 (void) memset(&lifr.lifr_addr, 0, 3233 sizeof (lifr.lifr_addr)); 3234 else 3235 Perror0_exit("in_status: SIOCGLIFBRDADDR"); 3236 } 3237 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3238 if (sin->sin_addr.s_addr != 0) { 3239 (void) printf("broadcast %s", 3240 inet_ntoa(sin->sin_addr)); 3241 } 3242 } 3243 /* If there is a groupname, print it for lun 0 alone */ 3244 if (strchr(name, ':') == NULL) { 3245 (void) memset(lifr.lifr_groupname, 0, 3246 sizeof (lifr.lifr_groupname)); 3247 if (ioctl(s, SIOCGLIFGROUPNAME, (caddr_t)&lifr) >= 0) { 3248 if (strlen(lifr.lifr_groupname) > 0) { 3249 (void) printf("\n\tgroupname %s", 3250 lifr.lifr_groupname); 3251 } 3252 } 3253 } 3254 (void) putchar('\n'); 3255 } 3256 3257 static void 3258 in6_status(int force, uint64_t flags) 3259 { 3260 char abuf[INET6_ADDRSTRLEN]; 3261 struct sockaddr_in6 *sin6, *laddr6; 3262 3263 if (debug) 3264 (void) printf("in6_status(%s) flags 0x%llx\n", name, flags); 3265 3266 if (!(flags & IFF_IPV6)) 3267 return; 3268 3269 /* if the interface is a tunnel, print the tunnel status */ 3270 tun_status(); 3271 3272 if (!(flags & IFF_NOLOCAL)) { 3273 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3274 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3275 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3276 errno == ENXIO) { 3277 if (!force) 3278 return; 3279 (void) memset(&lifr.lifr_addr, 0, 3280 sizeof (lifr.lifr_addr)); 3281 } else 3282 Perror0_exit("in_status6: SIOCGLIFADDR"); 3283 } 3284 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3285 (void) printf("\tinet6 %s/%d ", 3286 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3287 abuf, sizeof (abuf)), 3288 lifr.lifr_addrlen); 3289 laddr6 = sin6; 3290 } else { 3291 (void) printf("\tinet6 "); 3292 } 3293 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3294 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3295 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3296 errno == ENXIO) { 3297 if (!force) 3298 return; 3299 (void) memset(&lifr.lifr_addr, 0, 3300 sizeof (lifr.lifr_addr)); 3301 } else 3302 Perror0_exit("in_status6: SIOCGLIFSUBNET"); 3303 } 3304 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3305 if ((flags & IFF_NOLOCAL) || 3306 !IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &laddr6->sin6_addr)) { 3307 (void) printf("subnet %s/%d ", 3308 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3309 abuf, sizeof (abuf)), 3310 lifr.lifr_addrlen); 3311 } 3312 if (sin6->sin6_family != AF_INET6) { 3313 (void) printf("Wrong family: %d\n", sin6->sin6_family); 3314 } 3315 if (flags & IFF_POINTOPOINT) { 3316 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3317 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3318 if (errno == EADDRNOTAVAIL) 3319 (void) memset(&lifr.lifr_addr, 0, 3320 sizeof (lifr.lifr_addr)); 3321 else 3322 Perror0_exit("in_status6: SIOCGLIFDSTADDR"); 3323 } 3324 sin6 = (struct sockaddr_in6 *)&lifr.lifr_dstaddr; 3325 (void) printf("--> %s ", 3326 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3327 abuf, sizeof (abuf))); 3328 } 3329 if (verbose) { 3330 (void) putchar('\n'); 3331 (void) putchar('\t'); 3332 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3333 if (ioctl(s, SIOCGLIFTOKEN, (caddr_t)&lifr) < 0) { 3334 if (errno == EADDRNOTAVAIL || errno == EINVAL) 3335 (void) memset(&lifr.lifr_addr, 0, 3336 sizeof (lifr.lifr_addr)); 3337 else 3338 Perror0_exit("in_status6: SIOCGLIFTOKEN"); 3339 } else { 3340 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3341 (void) printf("token %s/%d ", 3342 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3343 abuf, sizeof (abuf)), 3344 lifr.lifr_addrlen); 3345 } 3346 if (ioctl(s, SIOCGLIFLNKINFO, (caddr_t)&lifr) < 0) { 3347 if (errno != EINVAL) { 3348 Perror0_exit("in_status6: SIOCGLIFLNKINFO"); 3349 } 3350 } else { 3351 (void) printf("maxhops %u, reachtime %u ms, " 3352 "reachretrans %u ms, maxmtu %u ", 3353 lifr.lifr_ifinfo.lir_maxhops, 3354 lifr.lifr_ifinfo.lir_reachtime, 3355 lifr.lifr_ifinfo.lir_reachretrans, 3356 lifr.lifr_ifinfo.lir_maxmtu); 3357 } 3358 } 3359 /* If there is a groupname, print it for lun 0 alone */ 3360 if (strchr(name, ':') == NULL) { 3361 (void) memset(lifr.lifr_groupname, 0, 3362 sizeof (lifr.lifr_groupname)); 3363 if (ioctl(s, SIOCGLIFGROUPNAME, (caddr_t)&lifr) >= 0) { 3364 if (strlen(lifr.lifr_groupname) > 0) { 3365 (void) printf("\n\tgroupname %s", 3366 lifr.lifr_groupname); 3367 } 3368 } 3369 } 3370 (void) putchar('\n'); 3371 } 3372 3373 static void 3374 in_configinfo(int force, uint64_t flags) 3375 { 3376 struct sockaddr_in *sin, *laddr; 3377 struct sockaddr_in netmask = { AF_INET }; 3378 3379 if (debug) 3380 (void) printf("in_configinfo(%s) flags 0x%llx\n", name, flags); 3381 3382 /* only configinfo info for IPv4 interfaces */ 3383 if (!(flags & IFF_IPV4)) 3384 return; 3385 3386 if (!(flags & IFF_NOLOCAL)) { 3387 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3388 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3389 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3390 errno == ENXIO) { 3391 if (!force) 3392 return; 3393 (void) memset(&lifr.lifr_addr, 0, 3394 sizeof (lifr.lifr_addr)); 3395 } else 3396 Perror0_exit("in_configinfo: SIOCGLIFADDR"); 3397 } 3398 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3399 if (get_lun(name) != 0) { 3400 (void) printf(" addif %s ", inet_ntoa(sin->sin_addr)); 3401 } else { 3402 (void) printf(" set %s ", inet_ntoa(sin->sin_addr)); 3403 } 3404 laddr = sin; 3405 } 3406 3407 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3408 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3409 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3410 errno == ENXIO) { 3411 if (!force) 3412 return; 3413 (void) memset(&lifr.lifr_addr, 0, 3414 sizeof (lifr.lifr_addr)); 3415 } else { 3416 Perror0_exit("in_configinfo: SIOCGLIFSUBNET"); 3417 } 3418 } 3419 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3420 3421 if ((flags & IFF_NOLOCAL) || 3422 sin->sin_addr.s_addr != laddr->sin_addr.s_addr) { 3423 (void) printf(" subnet %s/%d ", inet_ntoa(sin->sin_addr), 3424 lifr.lifr_addrlen); 3425 } 3426 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3427 if (ioctl(s, SIOCGLIFNETMASK, (caddr_t)&lifr) < 0) { 3428 if (errno != EADDRNOTAVAIL) 3429 Perror0_exit("in_configinfo: SIOCGLIFNETMASK"); 3430 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 3431 } else 3432 netmask.sin_addr = 3433 ((struct sockaddr_in *)&lifr.lifr_addr)->sin_addr; 3434 if (flags & IFF_POINTOPOINT) { 3435 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3436 if (ioctl(s, SIOCGLIFDSTADDR, (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_configinfo: SIOCGLIFDSTADDR"); 3442 } 3443 sin = (struct sockaddr_in *)&lifr.lifr_dstaddr; 3444 (void) printf(" destination %s ", inet_ntoa(sin->sin_addr)); 3445 } 3446 (void) printf(" netmask 0x%x ", ntohl(netmask.sin_addr.s_addr)); 3447 if (flags & IFF_BROADCAST) { 3448 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3449 if (ioctl(s, SIOCGLIFBRDADDR, (caddr_t)&lifr) < 0) { 3450 if (errno == EADDRNOTAVAIL) 3451 (void) memset(&lifr.lifr_addr, 0, 3452 sizeof (lifr.lifr_addr)); 3453 else 3454 Perror0_exit("in_configinfo: SIOCGLIFBRDADDR"); 3455 } 3456 sin = (struct sockaddr_in *)&lifr.lifr_addr; 3457 if (sin->sin_addr.s_addr != 0) { 3458 (void) printf(" broadcast %s ", 3459 inet_ntoa(sin->sin_addr)); 3460 } 3461 } 3462 3463 /* If there is a groupname, print it for lun 0 alone */ 3464 if (get_lun(name) == 0) { 3465 (void) memset(lifr.lifr_groupname, 0, 3466 sizeof (lifr.lifr_groupname)); 3467 if (ioctl(s, SIOCGLIFGROUPNAME, (caddr_t)&lifr) >= 0) { 3468 if (strlen(lifr.lifr_groupname) > 0) { 3469 (void) printf(" group %s ", 3470 lifr.lifr_groupname); 3471 } 3472 } 3473 } 3474 3475 /* Print flags to configure */ 3476 print_config_flags(flags); 3477 3478 /* IFF_NOARP applies to AF_INET only */ 3479 if (flags & IFF_NOARP) { 3480 (void) printf("-arp "); 3481 } 3482 } 3483 3484 static void 3485 in6_configinfo(int force, uint64_t flags) 3486 { 3487 char abuf[INET6_ADDRSTRLEN]; 3488 struct sockaddr_in6 *sin6, *laddr6; 3489 3490 if (debug) 3491 (void) printf("in6_configinfo(%s) flags 0x%llx\n", name, 3492 flags); 3493 3494 if (!(flags & IFF_IPV6)) 3495 return; 3496 3497 if (!(flags & IFF_NOLOCAL)) { 3498 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3499 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 3500 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3501 errno == ENXIO) { 3502 if (!force) 3503 return; 3504 (void) memset(&lifr.lifr_addr, 0, 3505 sizeof (lifr.lifr_addr)); 3506 } else 3507 Perror0_exit("in6_configinfo: SIOCGLIFADDR"); 3508 } 3509 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3510 if (get_lun(name) != 0) { 3511 (void) printf(" addif %s/%d ", 3512 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3513 abuf, sizeof (abuf)), 3514 lifr.lifr_addrlen); 3515 } else { 3516 (void) printf(" set %s/%d ", 3517 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3518 abuf, sizeof (abuf)), 3519 lifr.lifr_addrlen); 3520 } 3521 laddr6 = sin6; 3522 } 3523 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3524 if (ioctl(s, SIOCGLIFSUBNET, (caddr_t)&lifr) < 0) { 3525 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT || 3526 errno == ENXIO) { 3527 if (!force) 3528 return; 3529 (void) memset(&lifr.lifr_addr, 0, 3530 sizeof (lifr.lifr_addr)); 3531 } else 3532 Perror0_exit("in6_configinfo: SIOCGLIFSUBNET"); 3533 } 3534 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3535 if ((flags & IFF_NOLOCAL) || 3536 !IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &laddr6->sin6_addr)) { 3537 (void) printf(" subnet %s/%d ", 3538 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3539 abuf, sizeof (abuf)), 3540 lifr.lifr_addrlen); 3541 } 3542 3543 if (flags & IFF_POINTOPOINT) { 3544 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3545 if (ioctl(s, SIOCGLIFDSTADDR, (caddr_t)&lifr) < 0) { 3546 if (errno == EADDRNOTAVAIL) 3547 (void) memset(&lifr.lifr_addr, 0, 3548 sizeof (lifr.lifr_addr)); 3549 else 3550 Perror0_exit("in6_configinfo: SIOCGLIFDSTADDR"); 3551 } 3552 sin6 = (struct sockaddr_in6 *)&lifr.lifr_dstaddr; 3553 (void) printf(" destination %s ", 3554 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3555 abuf, sizeof (abuf))); 3556 } 3557 3558 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3559 if (ioctl(s, SIOCGLIFTOKEN, (caddr_t)&lifr) < 0) { 3560 if (errno == EADDRNOTAVAIL || errno == EINVAL) 3561 (void) memset(&lifr.lifr_addr, 0, 3562 sizeof (lifr.lifr_addr)); 3563 else 3564 Perror0_exit("in6_configinfo: SIOCGLIFTOKEN"); 3565 } else { 3566 sin6 = (struct sockaddr_in6 *)&lifr.lifr_addr; 3567 (void) printf(" token %s/%d ", 3568 inet_ntop(AF_INET6, (void *)&sin6->sin6_addr, 3569 abuf, sizeof (abuf)), 3570 lifr.lifr_addrlen); 3571 } 3572 3573 /* If there is a groupname, print it for lun 0 alone */ 3574 if (get_lun(name) == 0) { 3575 (void) memset(lifr.lifr_groupname, 0, 3576 sizeof (lifr.lifr_groupname)); 3577 if (ioctl(s, SIOCGLIFGROUPNAME, (caddr_t)&lifr) >= 0) { 3578 if (strlen(lifr.lifr_groupname) > 0) { 3579 (void) printf(" group %s ", 3580 lifr.lifr_groupname); 3581 } 3582 } 3583 } 3584 3585 /* Print flags to configure */ 3586 print_config_flags(flags); 3587 3588 /* IFF_NONUD applies to AF_INET6 only */ 3589 if (flags & IFF_NONUD) { 3590 (void) printf("-nud "); 3591 } 3592 } 3593 3594 /* ARGSUSED */ 3595 static int 3596 get_lun(char *rsrc) 3597 { 3598 char resource[LIFNAMSIZ]; 3599 char *cp; 3600 3601 (void) strcpy(resource, rsrc); 3602 3603 /* remove LIF component */ 3604 cp = strchr(resource, ':'); 3605 if (cp) { 3606 cp++; 3607 return (atoi(cp)); 3608 } 3609 3610 return (0); 3611 } 3612 3613 /* 3614 * We need to plink both the arp-device stream and the arp-ip-device stream. 3615 * However the muxid is stored only in IP. Plumbing 2 streams individually 3616 * is not atomic, and if ifconfig is killed, the resulting plumbing can 3617 * be inconsistent. For eg. if only the arp stream is plumbed, we have lost 3618 * the muxid, and the half-baked plumbing can neither be unplumbed nor 3619 * replumbed, thus requiring a reboot. To avoid the above the following 3620 * scheme is used. 3621 * 3622 * Ifconfig asks IP to enforce atomicity of plumbing the arp and IP streams. 3623 * This is done by pushing arp on to the mux (/dev/udp). ARP adds some 3624 * extra information in the I_PLINK and I_PUNLINK ioctls to let IP know 3625 * that the plumbing/unplumbing has to be done atomically. Ifconfig plumbs 3626 * the IP stream first, and unplumbs it last. The kernel (IP) does not 3627 * allow IP stream to be unplumbed without unplumbing arp stream. Similarly 3628 * it does not allow arp stream to be plumbed before IP stream is plumbed. 3629 * There is no need to use SIOCSLIFMUXID, since the whole operation is atomic, 3630 * and IP uses the info in the I_PLINK message to get the muxid. 3631 * 3632 * a. STREAMS does not allow us to use /dev/ip itself as the mux. So we use 3633 * /dev/udp[6]. 3634 * b. SIOCGLIFMUXID returns the muxid corresponding to the V4 or V6 stream 3635 * depending on the open i.e. V4 vs V6 open. So we need to use /dev/udp 3636 * or /dev/udp6. 3637 * c. We need to push ARP in order to get the required kernel support for 3638 * atomic plumbings. The actual work done by ARP is explained in arp.c 3639 * Without pushing ARP, we will still be able to plumb/unplumb. But 3640 * it is not atomic, and is supported by the kernel for backward 3641 * compatibility for other utilities like atmifconfig etc. In this case 3642 * the utility must use SIOCSLIFMUXID. 3643 */ 3644 static void 3645 plumb_one_device(dlpi_if_attr_t *diap, int ip_fd, int af) 3646 { 3647 int arp_fd = -1; 3648 int arp_muxid = -1, ip_muxid; 3649 int mux_fd; 3650 char *udp_dev_name; 3651 dlpi_if_attr_t dia; 3652 3653 if (debug) 3654 (void) printf("plumb_one_device: ifname %s, ppa %d\n", 3655 diap->ifname, diap->ppa); 3656 3657 if (diap->style == DL_STYLE2 && dlpi_detach(ip_fd, -1) < 0) 3658 Perror0_exit("dlpi_detach"); 3659 3660 if (ioctl(ip_fd, I_PUSH, IP_MOD_NAME) == -1) 3661 Perror2_exit("I_PUSH", IP_MOD_NAME); 3662 3663 /* 3664 * Push the ARP module onto the interface stream. IP uses 3665 * this to send resolution requests up to ARP. We need to 3666 * do this before the SLIFNAME ioctl is sent down because 3667 * the interface becomes publicly known as soon as the SLIFNAME 3668 * ioctl completes. Thus some other process trying to bring up 3669 * the interface after SLIFNAME but before we have pushed ARP 3670 * could hang. We pop the module again later if it is not needed. 3671 */ 3672 if (ioctl(ip_fd, I_PUSH, ARP_MOD_NAME) == -1) 3673 Perror2_exit("I_PUSH", ARP_MOD_NAME); 3674 3675 /* 3676 * Set IFF_IPV4/IFF_IPV6 flags. 3677 * At this point in time the kernel also allows an 3678 * override of the CANTCHANGE flags. 3679 */ 3680 3681 lifr.lifr_name[0] = '\0'; 3682 if (ioctl(ip_fd, SIOCGLIFFLAGS, (char *)&lifr) == -1) 3683 Perror0_exit("plumb_one_device: SIOCGLIFFLAGS"); 3684 3685 /* Set the name string and the IFF_IPV* flag */ 3686 if (af == AF_INET6) { 3687 lifr.lifr_flags |= IFF_IPV6; 3688 lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4); 3689 } else { 3690 lifr.lifr_flags |= IFF_IPV4; 3691 lifr.lifr_flags &= ~IFF_IPV6; 3692 } 3693 3694 /* record the device and module names as interface name */ 3695 lifr.lifr_ppa = diap->ppa; 3696 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3697 3698 /* set the interface name */ 3699 if (ioctl(ip_fd, SIOCSLIFNAME, (char *)&lifr) == -1) { 3700 if (errno != EEXIST) 3701 Perror0_exit("SIOCSLIFNAME for ip"); 3702 /* 3703 * This difference between the way we behave for EEXIST 3704 * and that with other errors exists to preserve legacy 3705 * behaviour. Earlier when foreachinterface() and matcif() 3706 * were doing the duplicate interface name checks, for 3707 * already existing interfaces, inetplumb() returned "0". 3708 * To preserve this behaviour, Perror0() and return are 3709 * called for EEXIST. 3710 */ 3711 Perror0("SIOCSLIFNAME for ip"); 3712 return; 3713 } 3714 3715 /* Get the full set of existing flags for this stream */ 3716 if (ioctl(ip_fd, SIOCGLIFFLAGS, (char *)&lifr) == -1) 3717 Perror0_exit("plumb_one_device: SIOCFLIFFLAGS"); 3718 3719 if (debug) { 3720 (void) printf("plumb_one_device: %s got flags: \n", 3721 lifr.lifr_name); 3722 print_flags(lifr.lifr_flags); 3723 (void) putchar('\n'); 3724 } 3725 3726 /* Check if arp is not actually needed */ 3727 if (lifr.lifr_flags & (IFF_NOARP|IFF_IPV6)) { 3728 if (ioctl(ip_fd, I_POP, 0) == -1) 3729 Perror2_exit("I_POP", ARP_MOD_NAME); 3730 } 3731 3732 /* 3733 * Open "/dev/udp" for use as a multiplexor to PLINK the 3734 * interface stream under. We use "/dev/udp" instead of "/dev/ip" 3735 * since STREAMS will not let you PLINK a driver under itself, 3736 * and "/dev/ip" is typically the driver at the bottom of 3737 * the stream for tunneling interfaces. 3738 */ 3739 if (af == AF_INET6) 3740 udp_dev_name = UDP6_DEV_NAME; 3741 else 3742 udp_dev_name = UDP_DEV_NAME; 3743 if ((mux_fd = open_arp_on_udp(udp_dev_name)) == -1) 3744 exit(EXIT_FAILURE); 3745 3746 /* Check if arp is not needed */ 3747 if (lifr.lifr_flags & (IFF_NOARP|IFF_IPV6)) { 3748 /* 3749 * PLINK the interface stream so that ifconfig can exit 3750 * without tearing down the stream. 3751 */ 3752 if ((ip_muxid = ioctl(mux_fd, I_PLINK, ip_fd)) == -1) { 3753 Perror0_exit("I_PLINK for ip"); 3754 } 3755 (void) close(mux_fd); 3756 return; 3757 } 3758 3759 /* 3760 * This interface does use ARP, so set up a separate stream 3761 * from the interface to ARP. 3762 * 3763 * Note: modules specified by the user are pushed 3764 * only on the interface stream, not on the ARP stream. 3765 */ 3766 3767 if (debug) 3768 (void) printf("plumb_one_device: ifname: %s\n", 3769 diap->ifname); 3770 arp_fd = dlpi_if_open(diap->ifname, &dia, _B_FALSE); 3771 3772 if (dia.style == DL_STYLE2 && dlpi_detach(arp_fd, -1) < 0) 3773 Perror0_exit("dlpi_detach"); 3774 3775 if (ioctl(arp_fd, I_PUSH, ARP_MOD_NAME) == -1) 3776 Perror2_exit("I_PUSH", ARP_MOD_NAME); 3777 3778 /* 3779 * Tell ARP the name and unit number for this interface. 3780 * Note that arp has no support for transparent ioctls. 3781 */ 3782 if (strioctl(arp_fd, SIOCSLIFNAME, (char *)&lifr, 3783 sizeof (lifr)) == -1) { 3784 if (errno != EEXIST) 3785 Perror0_exit("SIOCSLIFNAME for arp"); 3786 Perror0("SIOCSLIFNAME for arp"); 3787 (void) close(arp_fd); 3788 (void) close(mux_fd); 3789 return; 3790 } 3791 /* 3792 * PLINK the IP and ARP streams so that ifconfig can exit 3793 * without tearing down the stream. 3794 */ 3795 if ((ip_muxid = ioctl(mux_fd, I_PLINK, ip_fd)) == -1) { 3796 Perror0_exit("I_PLINK for ip"); 3797 } 3798 if ((arp_muxid = ioctl(mux_fd, I_PLINK, arp_fd)) == -1) { 3799 (void) ioctl(mux_fd, I_PUNLINK, ip_muxid); 3800 Perror0_exit("I_PLINK for arp"); 3801 } 3802 3803 if (debug) 3804 (void) printf("arp muxid = %d\n", arp_muxid); 3805 (void) close(arp_fd); 3806 (void) close(mux_fd); 3807 } 3808 3809 3810 /* 3811 * If this is a physical interface then remove it. 3812 * If it is a logical interface name use SIOCLIFREMOVEIF to 3813 * remove it. In both cases fail if it doesn't exist. 3814 */ 3815 /* ARGSUSED */ 3816 static int 3817 inetunplumb(char *arg, int64_t param) 3818 { 3819 int ip_muxid, arp_muxid; 3820 int mux_fd; 3821 char *udp_dev_name; 3822 char *strptr; 3823 uint64_t flags; 3824 boolean_t changed_arp_muxid = _B_FALSE; 3825 int save_errno; 3826 3827 strptr = strchr(name, ':'); 3828 if (strptr != NULL || strcmp(name, LOOPBACK_IF) == 0) { 3829 /* Can't unplumb logical interface zero */ 3830 if (strptr != NULL && strcmp(strptr, ":0") == 0) { 3831 (void) fprintf(stderr, "ifconfig: unplumb:" 3832 " Cannot unplumb %s: Invalid interface\n", name); 3833 exit(1); 3834 } 3835 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3836 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr)); 3837 3838 if (ioctl(s, SIOCLIFREMOVEIF, (caddr_t)&lifr) < 0) 3839 Perror0_exit("unplumb: SIOCLIFREMOVEIF"); 3840 return (0); 3841 } 3842 3843 /* 3844 * We used /dev/udp or udp6 to set up the mux. So we have to use 3845 * the same now for PUNLINK also. 3846 */ 3847 if (afp->af_af == AF_INET6) 3848 udp_dev_name = UDP6_DEV_NAME; 3849 else 3850 udp_dev_name = UDP_DEV_NAME; 3851 3852 if ((mux_fd = open_arp_on_udp(udp_dev_name)) == -1) 3853 exit(EXIT_FAILURE); 3854 3855 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3856 if (ioctl(mux_fd, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) { 3857 Perror0_exit("unplumb: SIOCGLIFFLAGS"); 3858 } 3859 flags = lifr.lifr_flags; 3860 if (ioctl(mux_fd, SIOCGLIFMUXID, (caddr_t)&lifr) < 0) { 3861 Perror0_exit("unplumb: SIOCGLIFMUXID"); 3862 } 3863 arp_muxid = lifr.lifr_arp_muxid; 3864 ip_muxid = lifr.lifr_ip_muxid; 3865 /* 3866 * We don't have a good way of knowing whether the arp stream is 3867 * plumbed. We can't rely on IFF_NOARP because someone could 3868 * have turned it off later using "ifconfig xxx -arp". 3869 */ 3870 if (arp_muxid != 0) { 3871 if (debug) 3872 (void) printf("arp_muxid %d\n", arp_muxid); 3873 if (ioctl(mux_fd, I_PUNLINK, arp_muxid) < 0) { 3874 if ((errno == EINVAL) && 3875 (flags & (IFF_NOARP | IFF_IPV6))) { 3876 /* 3877 * Some plumbing utilities set the muxid to 3878 * -1 or some invalid value to signify that 3879 * there is no arp stream. Set the muxid to 0 3880 * before trying to unplumb the IP stream. 3881 * IP does not allow the IP stream to be 3882 * unplumbed if it sees a non-null arp muxid, 3883 * for consistency of IP-ARP streams. 3884 */ 3885 lifr.lifr_arp_muxid = 0; 3886 (void) ioctl(mux_fd, SIOCSLIFMUXID, 3887 (caddr_t)&lifr); 3888 changed_arp_muxid = _B_TRUE; 3889 } else { 3890 Perror0("I_PUNLINK for arp"); 3891 } 3892 } 3893 } 3894 if (debug) 3895 (void) printf("ip_muxid %d\n", ip_muxid); 3896 3897 if (ioctl(mux_fd, I_PUNLINK, ip_muxid) < 0) { 3898 if (changed_arp_muxid) { 3899 /* 3900 * Some error occurred, and we need to restore 3901 * everything back to what it was. 3902 */ 3903 save_errno = errno; 3904 lifr.lifr_arp_muxid = arp_muxid; 3905 lifr.lifr_ip_muxid = ip_muxid; 3906 (void) ioctl(mux_fd, SIOCSLIFMUXID, (caddr_t)&lifr); 3907 errno = save_errno; 3908 } 3909 Perror0_exit("I_PUNLINK for ip"); 3910 } 3911 (void) close(mux_fd); 3912 return (0); 3913 } 3914 3915 /* 3916 * If this is a physical interface then create it unless it is already 3917 * present. If it is a logical interface name use SIOCLIFADDIF to 3918 * create and (and fail it if already exists.) 3919 * As a special case send SIOCLIFADDIF for the loopback interface. This 3920 * is needed since there is no other notion of plumbing the loopback 3921 * interface. 3922 */ 3923 /* ARGSUSED */ 3924 static int 3925 inetplumb(char *arg, int64_t param) 3926 { 3927 char *strptr; 3928 int dev_fd; 3929 dlpi_if_attr_t dia; 3930 boolean_t islo; 3931 3932 strptr = strchr(name, ':'); 3933 islo = (strcmp(name, LOOPBACK_IF) == 0); 3934 3935 if (strptr != NULL || islo) { 3936 (void) memset(&lifr, 0, sizeof (lifr)); 3937 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 3938 if (islo && ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) >= 0) { 3939 if (debug) { 3940 (void) fprintf(stderr, 3941 "ifconfig: %s already exists\n", name); 3942 } 3943 return (0); 3944 } 3945 if (ioctl(s, SIOCLIFADDIF, (caddr_t)&lifr) < 0) { 3946 if (errno == EEXIST) { 3947 if (debug) { 3948 (void) fprintf(stderr, 3949 "ifconfig: %s already exists\n", 3950 name); 3951 } 3952 } else { 3953 Perror2_exit("plumb: SIOCLIFADDIF", name); 3954 } 3955 } 3956 /* 3957 * IP can create the new logical interface on a different 3958 * physical interface in the same IPMP group. Take the new 3959 * interface into account for further operations. 3960 */ 3961 (void) strncpy(name, lifr.lifr_name, sizeof (name)); 3962 return (0); 3963 } 3964 3965 if (debug) 3966 (void) printf("inetplumb: %s af %d\n", name, afp->af_af); 3967 3968 if ((dev_fd = dlpi_if_open(name, &dia, _B_FALSE)) < 0) { 3969 Perror2_exit("plumb", name); 3970 /* NOTREACHED */ 3971 } 3972 3973 plumb_one_device(&dia, dev_fd, afp->af_af); 3974 (void) close(dev_fd); 3975 return (0); 3976 } 3977 3978 void 3979 Perror0(char *cmd) 3980 { 3981 int save_errno; 3982 3983 save_errno = errno; 3984 (void) fprintf(stderr, "ifconfig: "); 3985 errno = save_errno; 3986 switch (errno) { 3987 3988 case ENXIO: 3989 (void) fprintf(stderr, "%s: %s: no such interface\n", 3990 cmd, lifr.lifr_name); 3991 break; 3992 3993 case EPERM: 3994 (void) fprintf(stderr, "%s: %s: permission denied\n", 3995 cmd, lifr.lifr_name); 3996 break; 3997 3998 case EEXIST: 3999 (void) fprintf(stderr, "%s: %s: already exists\n", 4000 cmd, lifr.lifr_name); 4001 break; 4002 4003 default: { 4004 char buf[BUFSIZ]; 4005 4006 (void) snprintf(buf, sizeof (buf), "%s: %s", 4007 cmd, lifr.lifr_name); 4008 perror(buf); 4009 } 4010 } 4011 } 4012 4013 void 4014 Perror0_exit(char *cmd) 4015 { 4016 Perror0(cmd); 4017 exit(1); 4018 /* NOTREACHED */ 4019 } 4020 4021 void 4022 Perror2(char *cmd, char *str) 4023 { 4024 int save_errno; 4025 4026 save_errno = errno; 4027 (void) fprintf(stderr, "ifconfig: "); 4028 errno = save_errno; 4029 switch (errno) { 4030 4031 case ENXIO: 4032 (void) fprintf(stderr, "%s: %s: no such interface\n", 4033 cmd, str); 4034 break; 4035 4036 case EPERM: 4037 (void) fprintf(stderr, "%s: %s: permission denied\n", 4038 cmd, str); 4039 break; 4040 4041 default: { 4042 char buf[BUFSIZ]; 4043 4044 (void) snprintf(buf, sizeof (buf), "%s: %s", cmd, str); 4045 perror(buf); 4046 } 4047 } 4048 } 4049 4050 /* 4051 * Print out error message (Perror2()) and exit 4052 */ 4053 void 4054 Perror2_exit(char *cmd, char *str) 4055 { 4056 Perror2(cmd, str); 4057 exit(1); 4058 /* NOTREACHED */ 4059 } 4060 4061 /* 4062 * If the last argument is non-NULL allow a <addr>/<n> syntax and 4063 * pass out <n> in *plenp. 4064 * If <n> doesn't parse return BAD_ADDR as *plenp. 4065 * If no /<n> is present return NO_PREFIX as *plenp. 4066 */ 4067 static void 4068 in_getaddr(char *s, struct sockaddr *saddr, int *plenp) 4069 { 4070 /* LINTED: alignment */ 4071 struct sockaddr_in *sin = (struct sockaddr_in *)saddr; 4072 struct hostent *hp; 4073 struct netent *np; 4074 char str[BUFSIZ]; 4075 int error_num; 4076 4077 (void) strncpy(str, s, sizeof (str)); 4078 4079 /* 4080 * Look for '/'<n> is plenp 4081 */ 4082 if (plenp != NULL) { 4083 char *cp; 4084 4085 *plenp = in_getprefixlen(str, _B_TRUE, IP_ABITS); 4086 if (*plenp == BAD_ADDR) 4087 return; 4088 cp = strchr(str, '/'); 4089 if (cp != NULL) 4090 *cp = '\0'; 4091 } else if (strchr(str, '/') != NULL) { 4092 (void) fprintf(stderr, "ifconfig: %s: unexpected '/'\n", str); 4093 exit(1); 4094 } 4095 4096 (void) memset(sin, 0, sizeof (*sin)); 4097 4098 /* 4099 * Try to catch attempts to set the broadcast address to all 1's. 4100 */ 4101 if (strcmp(str, "255.255.255.255") == 0 || 4102 (strtoul(str, (char **)NULL, 0) == 0xffffffffUL)) { 4103 sin->sin_family = AF_INET; 4104 sin->sin_addr.s_addr = 0xffffffff; 4105 return; 4106 } 4107 4108 hp = getipnodebyname(str, AF_INET, 0, &error_num); 4109 if (hp) { 4110 sin->sin_family = hp->h_addrtype; 4111 (void) memcpy(&sin->sin_addr, hp->h_addr, hp->h_length); 4112 freehostent(hp); 4113 return; 4114 } 4115 np = getnetbyname(str); 4116 if (np) { 4117 sin->sin_family = np->n_addrtype; 4118 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); 4119 return; 4120 } 4121 if (error_num == TRY_AGAIN) { 4122 (void) fprintf(stderr, "ifconfig: %s: bad address " 4123 "(try again later)\n", s); 4124 } else { 4125 (void) fprintf(stderr, "ifconfig: %s: bad address\n", s); 4126 } 4127 exit(1); 4128 } 4129 4130 /* 4131 * If the last argument is non-NULL allow a <addr>/<n> syntax and 4132 * pass out <n> in *plenp. 4133 * If <n> doesn't parse return BAD_ADDR as *plenp. 4134 * If no /<n> is present return NO_PREFIX as *plenp. 4135 */ 4136 static void 4137 in6_getaddr(char *s, struct sockaddr *saddr, int *plenp) 4138 { 4139 /* LINTED: alignment */ 4140 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)saddr; 4141 struct hostent *hp; 4142 char str[BUFSIZ]; 4143 int error_num; 4144 4145 (void) strncpy(str, s, sizeof (str)); 4146 4147 /* 4148 * Look for '/'<n> is plenp 4149 */ 4150 if (plenp != NULL) { 4151 char *cp; 4152 4153 *plenp = in_getprefixlen(str, _B_TRUE, IPV6_ABITS); 4154 if (*plenp == BAD_ADDR) 4155 return; 4156 cp = strchr(str, '/'); 4157 if (cp != NULL) 4158 *cp = '\0'; 4159 } else if (strchr(str, '/') != NULL) { 4160 (void) fprintf(stderr, "ifconfig: %s: unexpected '/'\n", str); 4161 exit(1); 4162 } 4163 4164 (void) memset(sin6, 0, sizeof (*sin6)); 4165 4166 hp = getipnodebyname(str, AF_INET6, 0, &error_num); 4167 if (hp) { 4168 sin6->sin6_family = hp->h_addrtype; 4169 (void) memcpy(&sin6->sin6_addr, hp->h_addr, hp->h_length); 4170 freehostent(hp); 4171 return; 4172 } 4173 if (error_num == TRY_AGAIN) { 4174 (void) fprintf(stderr, "ifconfig: %s: bad address " 4175 "(try again later)\n", s); 4176 } else { 4177 (void) fprintf(stderr, "ifconfig: %s: bad address\n", s); 4178 } 4179 exit(1); 4180 } 4181 4182 /* 4183 * If "slash" is zero this parses the whole string as 4184 * an integer. With "slash" non zero it parses the tail part as an integer. 4185 * 4186 * If it is not a valid integer this returns BAD_ADDR. 4187 * If there is /<n> present this returns NO_PREFIX. 4188 */ 4189 static int 4190 in_getprefixlen(char *addr, boolean_t slash, int max_plen) 4191 { 4192 int prefixlen; 4193 char *str, *end; 4194 4195 if (slash) { 4196 str = strchr(addr, '/'); 4197 if (str == NULL) 4198 return (NO_PREFIX); 4199 str++; 4200 } else 4201 str = addr; 4202 4203 prefixlen = strtol(str, &end, 10); 4204 if (prefixlen < 0) 4205 return (BAD_ADDR); 4206 if (str == end) 4207 return (BAD_ADDR); 4208 if (max_plen != 0 && max_plen < prefixlen) 4209 return (BAD_ADDR); 4210 return (prefixlen); 4211 } 4212 4213 /* 4214 * Convert a prefix length to a mask. 4215 * Returns 1 if ok. 0 otherwise. 4216 * Assumes the mask array is zero'ed by the caller. 4217 */ 4218 static boolean_t 4219 in_prefixlentomask(int prefixlen, int maxlen, uchar_t *mask) 4220 { 4221 if (prefixlen < 0 || prefixlen > maxlen) 4222 return (0); 4223 4224 while (prefixlen > 0) { 4225 if (prefixlen >= 8) { 4226 *mask++ = 0xFF; 4227 prefixlen -= 8; 4228 continue; 4229 } 4230 *mask |= 1 << (8 - prefixlen); 4231 prefixlen--; 4232 } 4233 return (1); 4234 } 4235 4236 static void 4237 print_flags(uint64_t flags) 4238 { 4239 boolean_t first = _B_TRUE; 4240 int cnt, i; 4241 4242 (void) printf("flags=%llx", flags); 4243 cnt = sizeof (if_flags_tbl) / sizeof (if_flags_t); 4244 for (i = 0; i < cnt; i++) { 4245 if (flags & if_flags_tbl[i].iff_value) { 4246 if (first) { 4247 (void) printf("<"); 4248 first = _B_FALSE; 4249 } else { 4250 /* 4251 * It has to be here and not with the 4252 * printf below because for the last one, 4253 * we don't want a comma before the ">". 4254 */ 4255 (void) printf(","); 4256 } 4257 (void) printf("%s", if_flags_tbl[i].iff_name); 4258 } 4259 } 4260 if (!first) 4261 (void) printf(">"); 4262 } 4263 4264 static void 4265 print_config_flags(uint64_t flags) 4266 { 4267 int cnt, i; 4268 4269 cnt = sizeof (if_config_cmd_tbl) / sizeof (if_config_cmd_t); 4270 for (i = 0; i < cnt; i++) { 4271 if (flags & if_config_cmd_tbl[i].iff_flag) { 4272 (void) printf("%s ", if_config_cmd_tbl[i].iff_name); 4273 } 4274 } 4275 } 4276 4277 /* 4278 * Use the configured directory lookup mechanism (e.g. files/NIS/NIS+/...) 4279 * to find the network mask. Returns true if we found one to set. 4280 * 4281 * The parameter addr_set controls whether we should get the address of 4282 * the working interface for the netmask query. If addr_set is true, 4283 * we will use the address provided. Otherwise, we will find the working 4284 * interface's address and use it instead. 4285 */ 4286 static boolean_t 4287 in_getmask(struct sockaddr_in *saddr, boolean_t addr_set) 4288 { 4289 struct sockaddr_in ifaddr; 4290 4291 /* 4292 * Read the address from the interface if it is not passed in. 4293 */ 4294 if (!addr_set) { 4295 (void) strncpy(lifr.lifr_name, name, sizeof (lifr.lifr_name)); 4296 if (ioctl(s, SIOCGLIFADDR, (caddr_t)&lifr) < 0) { 4297 if (errno != EADDRNOTAVAIL) { 4298 (void) fprintf(stderr, "Need net number for " 4299 "mask\n"); 4300 } 4301 return (_B_FALSE); 4302 } 4303 ifaddr = *((struct sockaddr_in *)&lifr.lifr_addr); 4304 } else { 4305 ifaddr.sin_addr = saddr->sin_addr; 4306 } 4307 if (getnetmaskbyaddr(ifaddr.sin_addr, &saddr->sin_addr) == 0) { 4308 saddr->sin_family = AF_INET; 4309 return (_B_TRUE); 4310 } 4311 return (_B_FALSE); 4312 } 4313 4314 static int 4315 strioctl(int s, int cmd, char *buf, int buflen) 4316 { 4317 struct strioctl ioc; 4318 4319 (void) memset(&ioc, 0, sizeof (ioc)); 4320 ioc.ic_cmd = cmd; 4321 ioc.ic_timout = 0; 4322 ioc.ic_len = buflen; 4323 ioc.ic_dp = buf; 4324 return (ioctl(s, I_STR, (char *)&ioc)); 4325 } 4326 4327 static void 4328 add_ni(char *name) 4329 { 4330 ni_t **pp; 4331 ni_t *p; 4332 4333 for (pp = &ni_list; (p = *pp) != NULL; pp = &(p->ni_next)) { 4334 if (strcmp(p->ni_name, name) == 0) { 4335 if (debug > 2) 4336 (void) fprintf(stderr, "'%s' is a duplicate\n", 4337 name); 4338 return; 4339 } 4340 } 4341 4342 if (debug > 2) 4343 (void) fprintf(stderr, "adding '%s'\n", 4344 name); 4345 4346 if ((p = malloc(sizeof (ni_t))) == NULL) 4347 return; 4348 4349 (void) strlcpy(p->ni_name, name, sizeof (p->ni_name)); 4350 p->ni_next = NULL; 4351 4352 *pp = p; 4353 num_ni++; 4354 } 4355 4356 /* ARGSUSED2 */ 4357 static int 4358 devfs_entry(di_node_t node, di_minor_t minor, void *arg) 4359 { 4360 char *provider; 4361 int fd; 4362 uint_t ppa; 4363 dl_info_ack_t dlia; 4364 char ifname[LIFNAMSIZ]; 4365 4366 provider = di_minor_name(minor); 4367 4368 if (strlen(provider) > LIFNAMSIZ) 4369 return (DI_WALK_CONTINUE); 4370 4371 if (debug > 2) 4372 fprintf(stderr, "provider = %s\n", provider); 4373 4374 if ((fd = dlpi_open(provider)) < 0) 4375 return (DI_WALK_CONTINUE); 4376 4377 if (debug > 2) 4378 fprintf(stderr, "getting DL_INFO_ACK\n"); 4379 4380 if (dlpi_info(fd, -1, &dlia, NULL, NULL, NULL, NULL, NULL, NULL) < 0) 4381 goto done; 4382 4383 if (dlia.dl_provider_style == DL_STYLE1) { 4384 if (debug > 2) 4385 fprintf(stderr, "provider is DL_STYLE1\n"); 4386 add_ni(provider); 4387 goto done; 4388 } 4389 4390 if (debug > 2) 4391 fprintf(stderr, "provider is DL_STYLE2\n"); 4392 4393 if (di_minor_type(minor) != DDM_ALIAS) { 4394 if (debug > 2) 4395 (void) fprintf(stderr, 4396 "non-alias node, ignoring\n"); 4397 goto done; 4398 } 4399 4400 if (debug > 2) 4401 (void) fprintf(stderr, 4402 "alias node, using instance\n"); 4403 ppa = di_instance(node); 4404 4405 if (dlpi_attach(fd, -1, ppa) < 0) { 4406 if (debug > 2) 4407 (void) fprintf(stderr, 4408 "non-existent PPA, ignoring\n"); 4409 goto done; 4410 } 4411 4412 (void) snprintf(ifname, LIFNAMSIZ, "%s%d", provider, ppa); 4413 add_ni(ifname); 4414 4415 done: 4416 (void) dlpi_close(fd); 4417 return (DI_WALK_CONTINUE); 4418 } 4419 4420 /* 4421 * dhcp-related routines 4422 */ 4423 4424 static int 4425 setifdhcp(const char *caller, const char *ifname, int argc, char *argv[]) 4426 { 4427 dhcp_ipc_request_t *request; 4428 dhcp_ipc_reply_t *reply = NULL; 4429 int timeout = DHCP_IPC_WAIT_DEFAULT; 4430 dhcp_ipc_type_t type = DHCP_START; 4431 int error; 4432 boolean_t is_primary = _B_FALSE; 4433 boolean_t started = _B_FALSE; 4434 4435 for (argv++; --argc > 0; argv++) { 4436 4437 if (strcmp(*argv, "primary") == 0) { 4438 is_primary = _B_TRUE; 4439 continue; 4440 } 4441 4442 if (strcmp(*argv, "wait") == 0) { 4443 if (--argc <= 0) { 4444 usage(); 4445 return (DHCP_EXIT_BADARGS); 4446 } 4447 argv++; 4448 4449 if (strcmp(*argv, "forever") == 0) { 4450 timeout = DHCP_IPC_WAIT_FOREVER; 4451 continue; 4452 } 4453 4454 if (sscanf(*argv, "%d", &timeout) != 1) { 4455 usage(); 4456 return (DHCP_EXIT_BADARGS); 4457 } 4458 4459 if (timeout < 0) { 4460 usage(); 4461 return (DHCP_EXIT_BADARGS); 4462 } 4463 continue; 4464 } 4465 4466 type = dhcp_string_to_request(*argv); 4467 if (type == -1) { 4468 usage(); 4469 return (DHCP_EXIT_BADARGS); 4470 } 4471 } 4472 4473 /* 4474 * Only try to start agent on start or inform; in all other cases it 4475 * has to already be running for anything to make sense. 4476 */ 4477 if (type == DHCP_START || type == DHCP_INFORM) { 4478 if (dhcp_start_agent(DHCP_IPC_MAX_WAIT) == -1) { 4479 (void) fprintf(stderr, "%s: unable to start %s\n", 4480 caller, DHCP_AGENT_PATH); 4481 return (DHCP_EXIT_FAILURE); 4482 } 4483 started = _B_TRUE; 4484 } 4485 4486 if (is_primary) 4487 type = type | DHCP_PRIMARY; 4488 4489 request = dhcp_ipc_alloc_request(type, ifname, NULL, 0, DHCP_TYPE_NONE); 4490 if (request == NULL) { 4491 (void) fprintf(stderr, "%s: out of memory\n", caller); 4492 return (DHCP_EXIT_SYSTEM); 4493 } 4494 4495 error = dhcp_ipc_make_request(request, &reply, timeout); 4496 if (error != 0) { 4497 free(request); 4498 /* 4499 * Re-map connect error to not under control if we didn't try a 4500 * start operation, as this has to be true and results in a 4501 * clearer message, not to mention preserving compatibility 4502 * with the days when we always started dhcpagent for every 4503 * request. 4504 */ 4505 if (error == DHCP_IPC_E_CONNECT && !started) 4506 error = DHCP_IPC_E_UNKIF; 4507 (void) fprintf(stderr, "%s: %s: %s\n", caller, ifname, 4508 dhcp_ipc_strerror(error)); 4509 return (DHCP_EXIT_FAILURE); 4510 } 4511 4512 error = reply->return_code; 4513 if (error != 0) { 4514 free(request); 4515 free(reply); 4516 4517 if (error == DHCP_IPC_E_TIMEOUT && timeout == 0) 4518 return (DHCP_EXIT_SUCCESS); 4519 4520 (void) fprintf(stderr, "%s: %s: %s\n", caller, ifname, 4521 dhcp_ipc_strerror(error)); 4522 4523 if (error == DHCP_IPC_E_TIMEOUT) 4524 return (DHCP_EXIT_TIMEOUT); 4525 else 4526 return (DHCP_EXIT_IF_FAILURE); 4527 } 4528 4529 if (DHCP_IPC_CMD(type) == DHCP_STATUS) { 4530 (void) printf("%s", dhcp_status_hdr_string()); 4531 (void) printf("%s", dhcp_status_reply_to_string(reply)); 4532 } 4533 4534 free(request); 4535 free(reply); 4536 return (DHCP_EXIT_SUCCESS); 4537 } 4538 4539 static void 4540 usage(void) 4541 { 4542 (void) fprintf(stderr, 4543 "usage: ifconfig <interface> | -a[ 4 | 6 | D ][ u | d ][ Z ]\n"); 4544 4545 (void) fprintf(stderr, "%s", 4546 "\t[ <addr_family> ]\n" 4547 "\t[ <address>[/<prefix_length>] [ <dest_address> ] ]\n" 4548 "\t[ set [ <address>][/<prefix_length>] ]" 4549 " [ <address>/<prefix_length>] ]\n" 4550 "\t[ destination <dest_address> ]\n" 4551 "\t[ addif <address>[/<prefix_length>]" 4552 " [ <dest_address> ] ]\n" 4553 "\t[ removeif <address>[/<prefix_length>] ]\n" 4554 "\t[ arp | -arp ]\n" 4555 "\t[ auto-revarp ]\n" 4556 "\t[ broadcast <broad_addr> ]\n" 4557 "\t[ index <if_index> ]\n" 4558 "\t[ metric <n> ] [ mtu <n> ]\n" 4559 "\t[ netmask <mask> ]\n" 4560 "\t[ plumb ] [ unplumb ]\n" 4561 "\t[ preferred | -preferred ]\n" 4562 "\t[ private | -private ]\n" 4563 "\t[ local | -local ]\n" 4564 "\t[ router | -router ]\n" 4565 "\t[ subnet <subnet_address>]\n" 4566 "\t[ trailers | -trailers ]\n" 4567 "\t[ token <address>/<prefix_length> ]\n" 4568 "\t[ tsrc <tunnel_src_address> ]\n" 4569 "\t[ tdst <tunnel_dest_address> ]\n" 4570 "\t[ auth_algs <tunnel_AH_authentication_algorithm> ]\n" 4571 "\t[ encr_algs <tunnel_ESP_encryption_algorithm> ]\n" 4572 "\t[ encr_auth_algs <tunnel_ESP_authentication_algorithm> ]\n" 4573 "\t[ up ] [ down ]\n" 4574 "\t[ xmit | -xmit ]\n" 4575 "\t[ modlist ]\n" 4576 "\t[ modinsert <module_name@position> ]\n" 4577 "\t[ modremove <module_name@position> ]\n" 4578 "\t[ group <groupname>] | [ group \"\"]\n" 4579 "\t[ deprecated | -deprecated ]\n" 4580 "\t[ standby | -standby ]\n" 4581 "\t[ failover | -failover ]\n" 4582 "\t[ zone <zonename> | -zone ]\n" 4583 "\t[ usesrc <interface> ]\n" 4584 "\t[ all-zones ]\n"); 4585 4586 (void) fprintf(stderr, "or\n"); 4587 (void) fprintf(stderr, 4588 "\tifconfig <interface> | -a[ 4 | 6 | D ] [ u | d ]\n"); 4589 4590 (void) fprintf(stderr, "%s", "\tauto-dhcp | dhcp\n" 4591 "\t[ wait <time> | forever ]\n\t[ primary ]\n" 4592 "\tstart | drop | ping | release | status | inform\n"); 4593 } 4594