1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * startd.c - the master restarter 30 * 31 * svc.startd comprises two halves. The graph engine is based in graph.c and 32 * maintains the service dependency graph based on the information in the 33 * repository. For each service it also tracks the current state and the 34 * restarter responsible for the service. Based on the graph, events from the 35 * repository (mostly administrative requests from svcadm), and messages from 36 * the restarters, the graph engine makes decisions about how the services 37 * should be manipulated and sends commands to the appropriate restarters. 38 * Communication between the graph engine and the restarters is embodied in 39 * protocol.c. 40 * 41 * The second half of svc.startd is the restarter for services managed by 42 * svc.startd and is primarily contained in restarter.c. It responds to graph 43 * engine commands by executing methods, updating the repository, and sending 44 * feedback (mostly state updates) to the graph engine. 45 * 46 * Error handling 47 * 48 * In general, when svc.startd runs out of memory it reattempts a few times, 49 * sleeping inbetween, before giving up and exiting (see startd_alloc_retry()). 50 * When a repository connection is broken (libscf calls fail with 51 * SCF_ERROR_CONNECTION_BROKEN, librestart and internal functions return 52 * ECONNABORTED), svc.startd calls libscf_rebind_handle(), which coordinates 53 * with the svc.configd-restarting thread, fork_configd_thread(), via 54 * st->st_configd_live_cv, and rebinds the repository handle. Doing so resets 55 * all libscf state associated with that handle, so functions which do this 56 * should communicate the event to their callers (usually by returning 57 * ECONNRESET) so they may reset their state appropriately. 58 */ 59 60 #include <stdio.h> 61 #include <stdio_ext.h> 62 #include <sys/mnttab.h> /* uses FILE * without including stdio.h */ 63 #include <alloca.h> 64 #include <sys/mount.h> 65 #include <sys/stat.h> 66 #include <sys/types.h> 67 #include <sys/wait.h> 68 #include <assert.h> 69 #include <errno.h> 70 #include <fcntl.h> 71 #include <ftw.h> 72 #include <libintl.h> 73 #include <libscf.h> 74 #include <libscf_priv.h> 75 #include <libuutil.h> 76 #include <locale.h> 77 #include <poll.h> 78 #include <pthread.h> 79 #include <signal.h> 80 #include <stdarg.h> 81 #include <stdlib.h> 82 #include <string.h> 83 #include <strings.h> 84 #include <unistd.h> 85 86 #include "startd.h" 87 #include "protocol.h" 88 89 ssize_t max_scf_name_size; 90 ssize_t max_scf_fmri_size; 91 ssize_t max_scf_value_size; 92 93 mode_t fmask; 94 mode_t dmask; 95 96 graph_update_t *gu; 97 restarter_update_t *ru; 98 99 startd_state_t *st; 100 101 boolean_t booting_to_single_user = B_FALSE; 102 103 const char * const admin_actions[] = { 104 SCF_PROPERTY_DEGRADED, 105 SCF_PROPERTY_MAINT_OFF, 106 SCF_PROPERTY_MAINT_ON, 107 SCF_PROPERTY_MAINT_ON_IMMEDIATE, 108 SCF_PROPERTY_REFRESH, 109 SCF_PROPERTY_RESTART 110 }; 111 112 const int admin_events[NACTIONS] = { 113 RESTARTER_EVENT_TYPE_ADMIN_DEGRADED, 114 RESTARTER_EVENT_TYPE_ADMIN_MAINT_OFF, 115 RESTARTER_EVENT_TYPE_ADMIN_MAINT_ON, 116 RESTARTER_EVENT_TYPE_ADMIN_MAINT_ON_IMMEDIATE, 117 RESTARTER_EVENT_TYPE_ADMIN_REFRESH, 118 RESTARTER_EVENT_TYPE_ADMIN_RESTART 119 }; 120 121 const char * const instance_state_str[] = { 122 "none", 123 "uninitialized", 124 "maintenance", 125 "offline", 126 "disabled", 127 "online", 128 "degraded" 129 }; 130 131 static int finished = 0; 132 static int opt_reconfig = 0; 133 static uint8_t prop_reconfig = 0; 134 135 #define INITIAL_REBIND_ATTEMPTS 5 136 #define INITIAL_REBIND_DELAY 3 137 138 pthread_mutexattr_t mutex_attrs; 139 140 const char * 141 _umem_debug_init(void) 142 { 143 return ("default,verbose"); /* UMEM_DEBUG setting */ 144 } 145 146 const char * 147 _umem_logging_init(void) 148 { 149 return ("fail,contents"); /* UMEM_LOGGING setting */ 150 } 151 152 /* 153 * startd_alloc_retry() 154 * Wrapper for allocation functions. Retries with a decaying time 155 * value on failure to allocate, and aborts startd if failure is 156 * persistent. 157 */ 158 void * 159 startd_alloc_retry(void *f(size_t, int), size_t sz) 160 { 161 void *p; 162 uint_t try, msecs; 163 164 p = f(sz, UMEM_DEFAULT); 165 if (p != NULL || sz == 0) 166 return (p); 167 168 msecs = ALLOC_DELAY; 169 170 for (try = 0; p == NULL && try < ALLOC_RETRY; ++try) { 171 (void) poll(NULL, 0, msecs); 172 msecs *= ALLOC_DELAY_MULT; 173 p = f(sz, UMEM_DEFAULT); 174 if (p != NULL) 175 return (p); 176 } 177 178 uu_die("Insufficient memory.\n"); 179 /* NOTREACHED */ 180 } 181 182 void * 183 safe_realloc(void *p, size_t sz) 184 { 185 uint_t try, msecs; 186 187 p = realloc(p, sz); 188 if (p != NULL || sz == 0) 189 return (p); 190 191 msecs = ALLOC_DELAY; 192 193 for (try = 0; errno == EAGAIN && try < ALLOC_RETRY; ++try) { 194 (void) poll(NULL, 0, msecs); 195 p = realloc(p, sz); 196 if (p != NULL) 197 return (p); 198 msecs *= ALLOC_DELAY_MULT; 199 } 200 201 uu_die("Insufficient memory.\n"); 202 /* NOTREACHED */ 203 } 204 205 char * 206 safe_strdup(const char *s) 207 { 208 uint_t try, msecs; 209 char *d; 210 211 d = strdup(s); 212 if (d != NULL) 213 return (d); 214 215 msecs = ALLOC_DELAY; 216 217 for (try = 0; 218 (errno == EAGAIN || errno == ENOMEM) && try < ALLOC_RETRY; 219 ++try) { 220 (void) poll(NULL, 0, msecs); 221 d = strdup(s); 222 if (d != NULL) 223 return (d); 224 msecs *= ALLOC_DELAY_MULT; 225 } 226 227 uu_die("Insufficient memory.\n"); 228 /* NOTREACHED */ 229 } 230 231 232 void 233 startd_free(void *p, size_t sz) 234 { 235 umem_free(p, sz); 236 } 237 238 /* 239 * Creates a uu_list_pool_t with the same retry policy as startd_alloc(). 240 * Only returns NULL for UU_ERROR_UNKNOWN_FLAG and UU_ERROR_NOT_SUPPORTED. 241 */ 242 uu_list_pool_t * 243 startd_list_pool_create(const char *name, size_t e, size_t o, 244 uu_compare_fn_t *f, uint32_t flags) 245 { 246 uu_list_pool_t *pool; 247 uint_t try, msecs; 248 249 pool = uu_list_pool_create(name, e, o, f, flags); 250 if (pool != NULL) 251 return (pool); 252 253 msecs = ALLOC_DELAY; 254 255 for (try = 0; uu_error() == UU_ERROR_NO_MEMORY && try < ALLOC_RETRY; 256 ++try) { 257 (void) poll(NULL, 0, msecs); 258 pool = uu_list_pool_create(name, e, o, f, flags); 259 if (pool != NULL) 260 return (pool); 261 msecs *= ALLOC_DELAY_MULT; 262 } 263 264 if (try < ALLOC_RETRY) 265 return (NULL); 266 267 uu_die("Insufficient memory.\n"); 268 /* NOTREACHED */ 269 } 270 271 /* 272 * Creates a uu_list_t with the same retry policy as startd_alloc(). Only 273 * returns NULL for UU_ERROR_UNKNOWN_FLAG and UU_ERROR_NOT_SUPPORTED. 274 */ 275 uu_list_t * 276 startd_list_create(uu_list_pool_t *pool, void *parent, uint32_t flags) 277 { 278 uu_list_t *list; 279 uint_t try, msecs; 280 281 list = uu_list_create(pool, parent, flags); 282 if (list != NULL) 283 return (list); 284 285 msecs = ALLOC_DELAY; 286 287 for (try = 0; uu_error() == UU_ERROR_NO_MEMORY && try < ALLOC_RETRY; 288 ++try) { 289 (void) poll(NULL, 0, msecs); 290 list = uu_list_create(pool, parent, flags); 291 if (list != NULL) 292 return (list); 293 msecs *= ALLOC_DELAY_MULT; 294 } 295 296 if (try < ALLOC_RETRY) 297 return (NULL); 298 299 uu_die("Insufficient memory.\n"); 300 /* NOTREACHED */ 301 } 302 303 pthread_t 304 startd_thread_create(void *(*func)(void *), void *ptr) 305 { 306 int err; 307 pthread_t tid; 308 309 err = pthread_create(&tid, NULL, func, ptr); 310 if (err != 0) { 311 assert(err == EAGAIN); 312 uu_die("Could not create thread.\n"); 313 } 314 315 err = pthread_detach(tid); 316 assert(err == 0); 317 318 return (tid); 319 } 320 321 322 static int 323 read_startd_config(void) 324 { 325 scf_handle_t *hndl; 326 scf_instance_t *inst; 327 scf_propertygroup_t *pg; 328 scf_property_t *prop; 329 scf_value_t *val; 330 scf_iter_t *iter, *piter; 331 instance_data_t idata; 332 char *buf, *vbuf; 333 char *startd_options_fmri = uu_msprintf("%s/:properties/options", 334 SCF_SERVICE_STARTD); 335 char *startd_reconfigure_fmri = uu_msprintf( 336 "%s/:properties/system/reconfigure", SCF_SERVICE_STARTD); 337 char *env_opts, *lasts, *cp; 338 int bind_fails = 0; 339 int ret = 0, r; 340 uint_t count = 0, msecs = ALLOC_DELAY; 341 size_t sz; 342 ctid_t ctid; 343 uint64_t uint64; 344 345 buf = startd_alloc(max_scf_fmri_size); 346 347 if (startd_options_fmri == NULL || startd_reconfigure_fmri == NULL) 348 uu_die("Allocation failure\n"); 349 350 st->st_log_prefix = LOG_PREFIX_EARLY; 351 352 if ((st->st_log_file = getenv("STARTD_DEFAULT_LOG")) == NULL) { 353 st->st_log_file = startd_alloc(strlen(STARTD_DEFAULT_LOG) + 1); 354 355 (void) strcpy(st->st_log_file, STARTD_DEFAULT_LOG); 356 } 357 358 st->st_door_path = getenv("STARTD_ALT_DOOR"); 359 360 /* 361 * Read "options" property group. 362 */ 363 for (hndl = libscf_handle_create_bound(SCF_VERSION); hndl == NULL; 364 hndl = libscf_handle_create_bound(SCF_VERSION), bind_fails++) { 365 (void) sleep(INITIAL_REBIND_DELAY); 366 367 if (bind_fails > INITIAL_REBIND_ATTEMPTS) { 368 /* 369 * In the case that we can't bind to the repository 370 * (which should have been started), we need to allow 371 * the user into maintenance mode to determine what's 372 * failed. 373 */ 374 log_framework(LOG_INFO, "Couldn't fetch " 375 "default settings: %s\n", 376 scf_strerror(scf_error())); 377 378 ret = -1; 379 380 goto noscfout; 381 } 382 } 383 384 idata.i_fmri = SCF_SERVICE_STARTD; 385 idata.i_state = RESTARTER_STATE_NONE; 386 idata.i_next_state = RESTARTER_STATE_NONE; 387 timestamp: 388 switch (r = _restarter_commit_states(hndl, &idata, 389 RESTARTER_STATE_ONLINE, RESTARTER_STATE_NONE, NULL)) { 390 case 0: 391 break; 392 393 case ENOMEM: 394 ++count; 395 if (count < ALLOC_RETRY) { 396 (void) poll(NULL, 0, msecs); 397 msecs *= ALLOC_DELAY_MULT; 398 goto timestamp; 399 } 400 401 uu_die("Insufficient memory.\n"); 402 /* NOTREACHED */ 403 404 case ECONNABORTED: 405 libscf_handle_rebind(hndl); 406 goto timestamp; 407 408 case ENOENT: 409 case EPERM: 410 case EACCES: 411 case EROFS: 412 log_error(LOG_INFO, "Could set state of %s: %s.\n", 413 idata.i_fmri, strerror(r)); 414 break; 415 416 case EINVAL: 417 default: 418 bad_error("_restarter_commit_states", r); 419 } 420 421 pg = safe_scf_pg_create(hndl); 422 prop = safe_scf_property_create(hndl); 423 val = safe_scf_value_create(hndl); 424 inst = safe_scf_instance_create(hndl); 425 426 /* set startd's restarter properties */ 427 if (scf_handle_decode_fmri(hndl, SCF_SERVICE_STARTD, NULL, NULL, inst, 428 NULL, NULL, SCF_DECODE_FMRI_EXACT) == 0) { 429 (void) libscf_write_start_pid(inst, getpid()); 430 ctid = proc_get_ctid(); 431 if (ctid != -1) { 432 uint64 = (uint64_t)ctid; 433 (void) libscf_inst_set_count_prop(inst, 434 SCF_PG_RESTARTER, SCF_PG_RESTARTER_TYPE, 435 SCF_PG_RESTARTER_FLAGS, SCF_PROPERTY_CONTRACT, 436 uint64); 437 } 438 (void) libscf_note_method_log(inst, LOG_PREFIX_EARLY, 439 STARTD_DEFAULT_LOG); 440 (void) libscf_note_method_log(inst, LOG_PREFIX_NORMAL, 441 STARTD_DEFAULT_LOG); 442 } 443 444 /* Read reconfigure property for recovery. */ 445 if (scf_handle_decode_fmri(hndl, startd_reconfigure_fmri, NULL, NULL, 446 NULL, NULL, prop, NULL) != -1 && 447 scf_property_get_value(prop, val) == 0) 448 (void) scf_value_get_boolean(val, &prop_reconfig); 449 450 if (scf_handle_decode_fmri(hndl, startd_options_fmri, NULL, NULL, NULL, 451 pg, NULL, SCF_DECODE_FMRI_TRUNCATE) == -1) { 452 /* 453 * No configuration options defined. 454 */ 455 if (scf_error() != SCF_ERROR_NOT_FOUND) 456 uu_warn("Couldn't read configuration from 'options' " 457 "group: %s\n", scf_strerror(scf_error())); 458 goto scfout; 459 } 460 461 /* 462 * If there is no "options" group defined, then our defaults are fine. 463 */ 464 if (scf_pg_get_name(pg, NULL, 0) < 0) 465 goto scfout; 466 467 /* Iterate through. */ 468 iter = safe_scf_iter_create(hndl); 469 470 (void) scf_iter_pg_properties(iter, pg); 471 472 piter = safe_scf_iter_create(hndl); 473 vbuf = startd_alloc(max_scf_value_size); 474 475 while ((scf_iter_next_property(iter, prop) == 1)) { 476 scf_type_t ty; 477 478 if (scf_property_get_name(prop, buf, max_scf_fmri_size) < 0) 479 continue; 480 481 if (strcmp(buf, "logging") != 0 && 482 strcmp(buf, "boot_messages") != 0) 483 continue; 484 485 if (scf_property_type(prop, &ty) != 0) { 486 switch (scf_error()) { 487 case SCF_ERROR_CONNECTION_BROKEN: 488 default: 489 libscf_handle_rebind(hndl); 490 continue; 491 492 case SCF_ERROR_DELETED: 493 continue; 494 495 case SCF_ERROR_NOT_BOUND: 496 case SCF_ERROR_NOT_SET: 497 bad_error("scf_property_type", scf_error()); 498 } 499 } 500 501 if (ty != SCF_TYPE_ASTRING) { 502 uu_warn("property \"options/%s\" is not of type " 503 "astring; ignored.\n", buf); 504 continue; 505 } 506 507 if (scf_property_get_value(prop, val) != 0) { 508 switch (scf_error()) { 509 case SCF_ERROR_CONNECTION_BROKEN: 510 default: 511 return (ECONNABORTED); 512 513 case SCF_ERROR_DELETED: 514 case SCF_ERROR_NOT_FOUND: 515 return (0); 516 517 case SCF_ERROR_CONSTRAINT_VIOLATED: 518 uu_warn("property \"options/%s\" has multiple " 519 "values; ignored.\n", buf); 520 continue; 521 522 case SCF_ERROR_HANDLE_MISMATCH: 523 case SCF_ERROR_NOT_BOUND: 524 case SCF_ERROR_NOT_SET: 525 bad_error("scf_property_get_value", 526 scf_error()); 527 } 528 } 529 530 if (scf_value_get_astring(val, vbuf, max_scf_value_size) < 0) 531 bad_error("scf_value_get_astring", scf_error()); 532 533 if (strcmp("logging", buf) == 0) { 534 if (strcmp("verbose", vbuf) == 0) { 535 st->st_boot_flags = STARTD_BOOT_VERBOSE; 536 st->st_log_level_min = LOG_INFO; 537 } else if (strcmp("debug", vbuf) == 0) { 538 st->st_boot_flags = STARTD_BOOT_VERBOSE; 539 st->st_log_level_min = LOG_DEBUG; 540 } else if (strcmp("quiet", vbuf) == 0) { 541 st->st_log_level_min = LOG_NOTICE; 542 } else { 543 uu_warn("unknown options/logging " 544 "value '%s' ignored\n", vbuf); 545 } 546 547 } else if (strcmp("boot_messages", buf) == 0) { 548 if (strcmp("quiet", vbuf) == 0) { 549 st->st_boot_flags = STARTD_BOOT_QUIET; 550 } else if (strcmp("verbose", vbuf) == 0) { 551 st->st_boot_flags = STARTD_BOOT_VERBOSE; 552 } else { 553 log_framework(LOG_NOTICE, "unknown " 554 "options/boot_messages value '%s' " 555 "ignored\n", vbuf); 556 } 557 558 } 559 } 560 561 startd_free(vbuf, max_scf_value_size); 562 scf_iter_destroy(piter); 563 564 scf_iter_destroy(iter); 565 566 scfout: 567 scf_value_destroy(val); 568 scf_pg_destroy(pg); 569 scf_property_destroy(prop); 570 scf_instance_destroy(inst); 571 (void) scf_handle_unbind(hndl); 572 scf_handle_destroy(hndl); 573 574 noscfout: 575 startd_free(buf, max_scf_fmri_size); 576 uu_free(startd_options_fmri); 577 uu_free(startd_reconfigure_fmri); 578 579 if (booting_to_single_user) { 580 st->st_subgraph = startd_alloc(max_scf_fmri_size); 581 sz = strlcpy(st->st_subgraph, "milestone/single-user:default", 582 max_scf_fmri_size); 583 assert(sz < max_scf_fmri_size); 584 } 585 586 /* 587 * Options passed in as boot arguments override repository defaults. 588 */ 589 env_opts = getenv("SMF_OPTIONS"); 590 if (env_opts == NULL) 591 return (ret); 592 593 for (cp = strtok_r(env_opts, ",", &lasts); cp != NULL; 594 cp = strtok_r(NULL, ",", &lasts)) { 595 if (strcmp(cp, "debug") == 0) { 596 st->st_boot_flags = STARTD_BOOT_VERBOSE; 597 st->st_log_level_min = LOG_DEBUG; 598 599 /* -m debug should send messages to console */ 600 st->st_log_flags = 601 st->st_log_flags | STARTD_LOG_TERMINAL; 602 } else if (strcmp(cp, "verbose") == 0) { 603 st->st_boot_flags = STARTD_BOOT_VERBOSE; 604 st->st_log_level_min = LOG_INFO; 605 } else if (strcmp(cp, "seed") == 0) { 606 uu_warn("SMF option \"%s\" unimplemented.\n", cp); 607 } else if (strcmp(cp, "quiet") == 0) { 608 st->st_log_level_min = LOG_NOTICE; 609 } else if (strncmp(cp, "milestone=", 610 sizeof ("milestone=") - 1) == 0) { 611 char *mp = cp + sizeof ("milestone=") - 1; 612 613 if (booting_to_single_user) 614 continue; 615 616 if (st->st_subgraph == NULL) { 617 st->st_subgraph = 618 startd_alloc(max_scf_fmri_size); 619 st->st_subgraph[0] = '\0'; 620 } 621 622 if (mp[0] == '\0' || strcmp(mp, "all") == 0) { 623 (void) strcpy(st->st_subgraph, "all"); 624 } else if (strcmp(mp, "su") == 0 || 625 strcmp(mp, "single-user") == 0) { 626 (void) strcpy(st->st_subgraph, 627 "milestone/single-user:default"); 628 } else if (strcmp(mp, "mu") == 0 || 629 strcmp(mp, "multi-user") == 0) { 630 (void) strcpy(st->st_subgraph, 631 "milestone/multi-user:default"); 632 } else if (strcmp(mp, "mus") == 0 || 633 strcmp(mp, "multi-user-server") == 0) { 634 (void) strcpy(st->st_subgraph, 635 "milestone/multi-user-server:default"); 636 } else if (strcmp(mp, "none") == 0) { 637 (void) strcpy(st->st_subgraph, "none"); 638 } else { 639 log_framework(LOG_NOTICE, 640 "invalid milestone option value " 641 "'%s' ignored\n", mp); 642 } 643 } else { 644 uu_warn("Unknown SMF option \"%s\".\n", cp); 645 } 646 } 647 648 return (ret); 649 } 650 651 /* 652 * void set_boot_env() 653 * 654 * If -r was passed or /reconfigure exists, this is a reconfig 655 * reboot. We need to make sure that this information is given 656 * to the appropriate services the first time they're started 657 * by setting the system/reconfigure repository property, 658 * as well as pass the _INIT_RECONFIG variable on to the rcS 659 * start method so that legacy services can continue to use it. 660 * 661 * This function must never be called before contract_init(), as 662 * it sets st_initial. get_startd_config() sets prop_reconfig from 663 * pre-existing repository state. 664 */ 665 static void 666 set_boot_env() 667 { 668 struct stat sb; 669 int r; 670 671 /* 672 * Check if property still is set -- indicates we didn't get 673 * far enough previously to unset it. Otherwise, if this isn't 674 * the first startup, don't re-process /reconfigure or the 675 * boot flag. 676 */ 677 if (prop_reconfig != 1 && st->st_initial != 1) 678 return; 679 680 /* If /reconfigure exists, also set opt_reconfig. */ 681 if (stat("/reconfigure", &sb) != -1) 682 opt_reconfig = 1; 683 684 /* Nothing to do. Just return. */ 685 if (opt_reconfig == 0 && prop_reconfig == 0) 686 return; 687 688 /* 689 * Set startd's reconfigure property. This property is 690 * then cleared by successful completion of the single-user 691 * milestone. 692 */ 693 if (prop_reconfig != 1) { 694 r = libscf_set_reconfig(1); 695 switch (r) { 696 case 0: 697 break; 698 699 case ENOENT: 700 case EPERM: 701 case EACCES: 702 case EROFS: 703 log_error(LOG_WARNING, "Could not set reconfiguration " 704 "property: %s\n", strerror(r)); 705 break; 706 707 default: 708 bad_error("libscf_set_reconfig", r); 709 } 710 } 711 } 712 713 static void 714 startup(void) 715 { 716 ctid_t configd_ctid; 717 int err; 718 719 /* 720 * Initialize data structures. 721 */ 722 gu = startd_zalloc(sizeof (graph_update_t)); 723 ru = startd_zalloc(sizeof (restarter_update_t)); 724 725 (void) pthread_cond_init(&st->st_load_cv, NULL); 726 (void) pthread_cond_init(&st->st_configd_live_cv, NULL); 727 (void) pthread_cond_init(&gu->gu_cv, NULL); 728 (void) pthread_cond_init(&gu->gu_freeze_cv, NULL); 729 (void) pthread_cond_init(&ru->restarter_update_cv, NULL); 730 (void) pthread_mutex_init(&st->st_load_lock, &mutex_attrs); 731 (void) pthread_mutex_init(&st->st_configd_live_lock, &mutex_attrs); 732 (void) pthread_mutex_init(&gu->gu_lock, &mutex_attrs); 733 (void) pthread_mutex_init(&gu->gu_freeze_lock, &mutex_attrs); 734 (void) pthread_mutex_init(&ru->restarter_update_lock, &mutex_attrs); 735 736 configd_ctid = contract_init(); 737 738 if (configd_ctid != -1) 739 log_framework(LOG_DEBUG, "Existing configd contract %ld; not " 740 "starting svc.configd\n", configd_ctid); 741 742 (void) startd_thread_create(fork_configd_thread, (void *)configd_ctid); 743 744 /* 745 * Await, if necessary, configd's initial arrival. 746 */ 747 MUTEX_LOCK(&st->st_configd_live_lock); 748 while (!st->st_configd_lives) { 749 log_framework(LOG_DEBUG, "Awaiting cv signal on " 750 "configd_live_cv\n"); 751 err = pthread_cond_wait(&st->st_configd_live_cv, 752 &st->st_configd_live_lock); 753 assert(err == 0); 754 } 755 MUTEX_UNLOCK(&st->st_configd_live_lock); 756 757 utmpx_init(); 758 wait_init(); 759 760 if (read_startd_config()) 761 log_framework(LOG_INFO, "svc.configd unable to provide startd " 762 "optional settings\n"); 763 764 log_init(); 765 dict_init(); 766 timeout_init(); 767 restarter_protocol_init(); 768 restarter_init(); 769 graph_protocol_init(); 770 graph_init(); 771 772 init_env(); 773 774 set_boot_env(); 775 restarter_start(); 776 graph_engine_start(); 777 } 778 779 static void 780 usage(const char *name) 781 { 782 uu_warn(gettext("usage: %s [-n]\n"), name); 783 exit(UU_EXIT_USAGE); 784 } 785 786 static int 787 daemonize_start(void) 788 { 789 pid_t pid; 790 int fd; 791 792 if ((pid = fork1()) < 0) 793 return (-1); 794 795 if (pid != 0) 796 exit(0); 797 798 (void) close(0); 799 800 if ((fd = open("/dev/null", O_RDONLY)) == -1) { 801 uu_warn(gettext("can't connect stdin to /dev/null")); 802 } else if (fd != 0) { 803 (void) dup2(fd, 0); 804 startd_close(fd); 805 } 806 807 closefrom(3); 808 (void) dup2(2, 1); 809 810 (void) setsid(); 811 (void) chdir("/"); 812 813 /* Use default umask that init handed us, but 022 to create files. */ 814 dmask = umask(022); 815 fmask = umask(dmask); 816 817 return (0); 818 } 819 820 /*ARGSUSED*/ 821 static void 822 die_handler(int sig, siginfo_t *info, void *data) 823 { 824 finished = 1; 825 } 826 827 int 828 main(int argc, char *argv[]) 829 { 830 int opt; 831 int daemonize = 1; 832 struct sigaction act; 833 sigset_t nullset; 834 struct stat sb; 835 836 (void) uu_setpname(argv[0]); 837 838 st = startd_zalloc(sizeof (startd_state_t)); 839 840 (void) pthread_mutexattr_init(&mutex_attrs); 841 #ifndef NDEBUG 842 (void) pthread_mutexattr_settype(&mutex_attrs, 843 PTHREAD_MUTEX_ERRORCHECK); 844 #endif 845 846 max_scf_name_size = scf_limit(SCF_LIMIT_MAX_NAME_LENGTH); 847 max_scf_value_size = scf_limit(SCF_LIMIT_MAX_VALUE_LENGTH); 848 max_scf_fmri_size = scf_limit(SCF_LIMIT_MAX_FMRI_LENGTH); 849 850 if (max_scf_name_size == -1 || max_scf_value_size == -1 || 851 max_scf_value_size == -1) 852 uu_die("Can't determine repository maximum lengths.\n"); 853 854 max_scf_name_size++; 855 max_scf_value_size++; 856 max_scf_fmri_size++; 857 858 st->st_log_flags = STARTD_LOG_FILE | STARTD_LOG_SYSLOG; 859 st->st_log_level_min = LOG_NOTICE; 860 861 while ((opt = getopt(argc, argv, "nrs")) != EOF) { 862 switch (opt) { 863 case 'n': 864 daemonize = 0; 865 break; 866 case 'r': /* reconfiguration boot */ 867 opt_reconfig = 1; 868 break; 869 case 's': /* single-user mode */ 870 booting_to_single_user = B_TRUE; 871 break; 872 default: 873 usage(argv[0]); /* exits */ 874 } 875 } 876 877 if (optind != argc) 878 usage(argv[0]); 879 880 (void) enable_extended_FILE_stdio(-1, -1); 881 882 if (daemonize) 883 if (daemonize_start() < 0) 884 uu_die("Can't daemonize\n"); 885 886 log_init(); 887 888 if (stat("/etc/svc/volatile/resetting", &sb) != -1) { 889 log_framework(LOG_NOTICE, "Restarter quiesced.\n"); 890 891 for (;;) 892 (void) pause(); 893 } 894 895 act.sa_sigaction = &die_handler; 896 (void) sigfillset(&act.sa_mask); 897 act.sa_flags = SA_SIGINFO; 898 (void) sigaction(SIGINT, &act, NULL); 899 (void) sigaction(SIGTERM, &act, NULL); 900 901 startup(); 902 903 (void) sigemptyset(&nullset); 904 while (!finished) { 905 log_framework(LOG_DEBUG, "Main thread paused\n"); 906 (void) sigsuspend(&nullset); 907 } 908 909 (void) log_framework(LOG_DEBUG, "Restarter exiting.\n"); 910 return (0); 911 } 912