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 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 /* 26 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 27 * Copyright (c) 2015 by Delphix. All rights reserved. 28 * Copyright 2016 Toomas Soome <tsoome@me.com> 29 * Copyright 2018 OmniOS Community Edition (OmniOSce) Association. 30 */ 31 32 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 33 /* All Rights Reserved */ 34 35 /* 36 * University Copyright- Copyright (c) 1982, 1986, 1988 37 * The Regents of the University of California 38 * All Rights Reserved 39 * 40 * University Acknowledgment- Portions of this document are derived from 41 * software developed by the University of California, Berkeley, and its 42 * contributors. 43 * Portions contributed by Juergen Keil, <jk@tools.de>. 44 */ 45 46 47 /* 48 * Common code for halt(1M), poweroff(1M), and reboot(1M). We use 49 * argv[0] to determine which behavior to exhibit. 50 */ 51 52 #include <stdio.h> 53 #include <procfs.h> 54 #include <sys/types.h> 55 #include <sys/elf.h> 56 #include <sys/systeminfo.h> 57 #include <sys/stat.h> 58 #include <sys/uadmin.h> 59 #include <sys/mntent.h> 60 #include <sys/mnttab.h> 61 #include <sys/mount.h> 62 #include <sys/fs/ufs_mount.h> 63 #include <alloca.h> 64 #include <assert.h> 65 #include <errno.h> 66 #include <fcntl.h> 67 #include <libgen.h> 68 #include <libscf.h> 69 #include <libscf_priv.h> 70 #include <limits.h> 71 #include <locale.h> 72 #include <libintl.h> 73 #include <syslog.h> 74 #include <signal.h> 75 #include <strings.h> 76 #include <unistd.h> 77 #include <stdlib.h> 78 #include <stdio.h> 79 #include <strings.h> 80 #include <time.h> 81 #include <wait.h> 82 #include <ctype.h> 83 #include <utmpx.h> 84 #include <pwd.h> 85 #include <zone.h> 86 #include <spawn.h> 87 88 #include <libzfs.h> 89 #if defined(__x86) 90 #include <libbe.h> 91 #endif 92 93 #if !defined(TEXT_DOMAIN) 94 #define TEXT_DOMAIN "SYS_TEST" 95 #endif 96 97 #if defined(__sparc) 98 #define CUR_ELFDATA ELFDATA2MSB 99 #elif defined(__x86) 100 #define CUR_ELFDATA ELFDATA2LSB 101 #endif 102 103 static libzfs_handle_t *g_zfs; 104 105 extern int audit_halt_setup(int, char **); 106 extern int audit_halt_success(void); 107 extern int audit_halt_fail(void); 108 109 extern int audit_reboot_setup(void); 110 extern int audit_reboot_success(void); 111 extern int audit_reboot_fail(void); 112 113 static char *cmdname; /* basename(argv[0]), the name of the command */ 114 115 typedef struct ctidlist_struct { 116 ctid_t ctid; 117 struct ctidlist_struct *next; 118 } ctidlist_t; 119 120 static ctidlist_t *ctidlist = NULL; 121 static ctid_t startdct = -1; 122 123 #define FMRI_STARTD_CONTRACT \ 124 "svc:/system/svc/restarter:default/:properties/restarter/contract" 125 126 #define BEADM_PROG "/usr/sbin/beadm" 127 #define BOOTADM_PROG "/sbin/bootadm" 128 #define ZONEADM_PROG "/usr/sbin/zoneadm" 129 130 /* 131 * The length of FASTBOOT_MOUNTPOINT must be less than MAXPATHLEN. 132 */ 133 #define FASTBOOT_MOUNTPOINT "/tmp/.fastboot.root" 134 135 /* 136 * Fast Reboot related variables 137 */ 138 static char fastboot_mounted[MAXPATHLEN]; 139 140 #if defined(__x86) 141 static char *fbarg; 142 static char *fbarg_used; 143 static int fbarg_entnum = BE_ENTRY_DEFAULT; 144 #endif /* __x86 */ 145 146 static int validate_ufs_disk(char *, char *); 147 static int validate_zfs_pool(char *, char *); 148 149 static pid_t 150 get_initpid() 151 { 152 static int init_pid = -1; 153 154 if (init_pid == -1) { 155 if (zone_getattr(getzoneid(), ZONE_ATTR_INITPID, &init_pid, 156 sizeof (init_pid)) != sizeof (init_pid)) { 157 assert(errno == ESRCH); 158 init_pid = -1; 159 } 160 } 161 return (init_pid); 162 } 163 164 /* 165 * Quiesce or resume init using /proc. When stopping init, we can't send 166 * SIGTSTP (since init ignores it) or SIGSTOP (since the kernel won't permit 167 * it). 168 */ 169 static int 170 direct_init(long command) 171 { 172 char ctlfile[MAXPATHLEN]; 173 pid_t pid; 174 int ctlfd; 175 176 assert(command == PCDSTOP || command == PCRUN); 177 if ((pid = get_initpid()) == -1) { 178 return (-1); 179 } 180 181 (void) snprintf(ctlfile, sizeof (ctlfile), "/proc/%d/ctl", pid); 182 if ((ctlfd = open(ctlfile, O_WRONLY)) == -1) 183 return (-1); 184 185 if (command == PCDSTOP) { 186 if (write(ctlfd, &command, sizeof (long)) == -1) { 187 (void) close(ctlfd); 188 return (-1); 189 } 190 } else { /* command == PCRUN */ 191 long cmds[2]; 192 cmds[0] = command; 193 cmds[1] = 0; 194 if (write(ctlfd, cmds, sizeof (cmds)) == -1) { 195 (void) close(ctlfd); 196 return (-1); 197 } 198 } 199 (void) close(ctlfd); 200 return (0); 201 } 202 203 static void 204 stop_startd() 205 { 206 scf_handle_t *h; 207 scf_property_t *prop = NULL; 208 scf_value_t *val = NULL; 209 uint64_t uint64; 210 211 if ((h = scf_handle_create(SCF_VERSION)) == NULL) 212 return; 213 214 if ((scf_handle_bind(h) != 0) || 215 ((prop = scf_property_create(h)) == NULL) || 216 ((val = scf_value_create(h)) == NULL)) 217 goto out; 218 219 if (scf_handle_decode_fmri(h, FMRI_STARTD_CONTRACT, 220 NULL, NULL, NULL, NULL, prop, SCF_DECODE_FMRI_EXACT) != 0) 221 goto out; 222 223 if (scf_property_is_type(prop, SCF_TYPE_COUNT) != 0 || 224 scf_property_get_value(prop, val) != 0 || 225 scf_value_get_count(val, &uint64) != 0) 226 goto out; 227 228 startdct = (ctid_t)uint64; 229 (void) sigsend(P_CTID, startdct, SIGSTOP); 230 231 out: 232 scf_property_destroy(prop); 233 scf_value_destroy(val); 234 scf_handle_destroy(h); 235 } 236 237 static void 238 continue_startd() 239 { 240 if (startdct != -1) 241 (void) sigsend(P_CTID, startdct, SIGCONT); 242 } 243 244 #define FMRI_RESTARTER_PROP "/:properties/general/restarter" 245 #define FMRI_CONTRACT_PROP "/:properties/restarter/contract" 246 247 static int 248 save_ctid(ctid_t ctid) 249 { 250 ctidlist_t *next; 251 252 for (next = ctidlist; next != NULL; next = next->next) 253 if (next->ctid == ctid) 254 return (-1); 255 256 next = (ctidlist_t *)malloc(sizeof (ctidlist_t)); 257 if (next == NULL) 258 return (-1); 259 260 next->ctid = ctid; 261 next->next = ctidlist; 262 ctidlist = next; 263 return (0); 264 } 265 266 static void 267 stop_delegates() 268 { 269 ctid_t ctid; 270 scf_handle_t *h; 271 scf_scope_t *sc = NULL; 272 scf_service_t *svc = NULL; 273 scf_instance_t *inst = NULL; 274 scf_snapshot_t *snap = NULL; 275 scf_snapshot_t *isnap = NULL; 276 scf_propertygroup_t *pg = NULL; 277 scf_property_t *prop = NULL; 278 scf_value_t *val = NULL; 279 scf_iter_t *siter = NULL; 280 scf_iter_t *iiter = NULL; 281 char *fmri; 282 ssize_t length; 283 284 uint64_t uint64; 285 ssize_t bytes; 286 287 length = scf_limit(SCF_LIMIT_MAX_FMRI_LENGTH); 288 if (length <= 0) 289 return; 290 291 length++; 292 fmri = alloca(length * sizeof (char)); 293 294 if ((h = scf_handle_create(SCF_VERSION)) == NULL) 295 return; 296 297 if (scf_handle_bind(h) != 0) { 298 scf_handle_destroy(h); 299 return; 300 } 301 302 if ((sc = scf_scope_create(h)) == NULL || 303 (svc = scf_service_create(h)) == NULL || 304 (inst = scf_instance_create(h)) == NULL || 305 (snap = scf_snapshot_create(h)) == NULL || 306 (pg = scf_pg_create(h)) == NULL || 307 (prop = scf_property_create(h)) == NULL || 308 (val = scf_value_create(h)) == NULL || 309 (siter = scf_iter_create(h)) == NULL || 310 (iiter = scf_iter_create(h)) == NULL) 311 goto out; 312 313 if (scf_handle_get_scope(h, SCF_SCOPE_LOCAL, sc) != 0) 314 goto out; 315 316 if (scf_iter_scope_services(siter, sc) != 0) 317 goto out; 318 319 while (scf_iter_next_service(siter, svc) == 1) { 320 321 if (scf_iter_service_instances(iiter, svc) != 0) 322 continue; 323 324 while (scf_iter_next_instance(iiter, inst) == 1) { 325 326 if ((scf_instance_get_snapshot(inst, "running", 327 snap)) != 0) 328 isnap = NULL; 329 else 330 isnap = snap; 331 332 if (scf_instance_get_pg_composed(inst, isnap, 333 SCF_PG_GENERAL, pg) != 0) 334 continue; 335 336 if (scf_pg_get_property(pg, SCF_PROPERTY_RESTARTER, 337 prop) != 0 || 338 scf_property_get_value(prop, val) != 0) 339 continue; 340 341 bytes = scf_value_get_astring(val, fmri, length); 342 if (bytes <= 0 || bytes >= length) 343 continue; 344 345 if (strlcat(fmri, FMRI_CONTRACT_PROP, length) >= 346 length) 347 continue; 348 349 if (scf_handle_decode_fmri(h, fmri, NULL, NULL, 350 NULL, NULL, prop, SCF_DECODE_FMRI_EXACT) != 0) 351 continue; 352 353 if (scf_property_is_type(prop, SCF_TYPE_COUNT) != 0 || 354 scf_property_get_value(prop, val) != 0 || 355 scf_value_get_count(val, &uint64) != 0) 356 continue; 357 358 ctid = (ctid_t)uint64; 359 if (save_ctid(ctid) == 0) { 360 (void) sigsend(P_CTID, ctid, SIGSTOP); 361 } 362 } 363 } 364 out: 365 scf_scope_destroy(sc); 366 scf_service_destroy(svc); 367 scf_instance_destroy(inst); 368 scf_snapshot_destroy(snap); 369 scf_pg_destroy(pg); 370 scf_property_destroy(prop); 371 scf_value_destroy(val); 372 scf_iter_destroy(siter); 373 scf_iter_destroy(iiter); 374 375 (void) scf_handle_unbind(h); 376 scf_handle_destroy(h); 377 } 378 379 static void 380 continue_delegates() 381 { 382 ctidlist_t *next; 383 for (next = ctidlist; next != NULL; next = next->next) 384 (void) sigsend(P_CTID, next->ctid, SIGCONT); 385 } 386 387 #define FMRI_GDM "svc:/application/graphical-login/gdm:default" 388 #define GDM_STOP_TIMEOUT 10 /* Give gdm 10 seconds to shut down */ 389 390 /* 391 * If gdm is running, try to stop gdm. 392 * Returns 0 on success, -1 on failure. 393 */ 394 static int 395 stop_gdm() 396 { 397 char *gdm_state = NULL; 398 int retry = 0; 399 400 /* 401 * If gdm is running, try to stop gdm. 402 */ 403 while ((gdm_state = smf_get_state(FMRI_GDM)) != NULL && 404 strcmp(gdm_state, SCF_STATE_STRING_ONLINE) == 0 && 405 retry++ < GDM_STOP_TIMEOUT) { 406 407 free(gdm_state); 408 409 /* 410 * Only need to disable once. 411 */ 412 if (retry == 1 && 413 smf_disable_instance(FMRI_GDM, SMF_TEMPORARY) != 0) { 414 (void) fprintf(stderr, 415 gettext("%s: Failed to stop %s: %s.\n"), 416 cmdname, FMRI_GDM, scf_strerror(scf_error())); 417 return (-1); 418 } 419 (void) sleep(1); 420 } 421 422 if (retry >= GDM_STOP_TIMEOUT) { 423 (void) fprintf(stderr, gettext("%s: Failed to stop %s.\n"), 424 cmdname, FMRI_GDM); 425 return (-1); 426 } 427 428 return (0); 429 } 430 431 432 static void 433 stop_restarters() 434 { 435 stop_startd(); 436 stop_delegates(); 437 } 438 439 static void 440 continue_restarters() 441 { 442 continue_startd(); 443 continue_delegates(); 444 } 445 446 /* 447 * Copy an array of strings into buf, separated by spaces. Returns 0 on 448 * success. 449 */ 450 static int 451 gather_args(char **args, char *buf, size_t buf_sz) 452 { 453 if (strlcpy(buf, *args, buf_sz) >= buf_sz) 454 return (-1); 455 456 for (++args; *args != NULL; ++args) { 457 if (strlcat(buf, " ", buf_sz) >= buf_sz) 458 return (-1); 459 if (strlcat(buf, *args, buf_sz) >= buf_sz) 460 return (-1); 461 } 462 463 return (0); 464 } 465 466 /* 467 * Halt every zone on the system. We are committed to doing a shutdown 468 * even if something goes wrong here. If something goes wrong, we just 469 * continue with the shutdown. Return non-zero if we need to wait for zones to 470 * halt later on. 471 */ 472 static int 473 halt_zones() 474 { 475 pid_t pid; 476 zoneid_t *zones; 477 size_t nz = 0, old_nz; 478 int i; 479 char zname[ZONENAME_MAX]; 480 481 /* 482 * Get a list of zones. If the number of zones changes in between the 483 * two zone_list calls, try again. 484 */ 485 486 for (;;) { 487 (void) zone_list(NULL, &nz); 488 if (nz == 1) 489 return (0); 490 old_nz = nz; 491 zones = calloc(sizeof (zoneid_t), nz); 492 if (zones == NULL) { 493 (void) fprintf(stderr, 494 gettext("%s: Could not halt zones" 495 " (out of memory).\n"), cmdname); 496 return (0); 497 } 498 499 (void) zone_list(zones, &nz); 500 if (old_nz == nz) 501 break; 502 free(zones); 503 } 504 505 if (nz == 2) { 506 (void) fprintf(stderr, gettext("%s: Halting 1 zone.\n"), 507 cmdname); 508 } else { 509 (void) fprintf(stderr, gettext("%s: Halting %i zones.\n"), 510 cmdname, nz - 1); 511 } 512 513 for (i = 0; i < nz; i++) { 514 if (zones[i] == GLOBAL_ZONEID) 515 continue; 516 if (getzonenamebyid(zones[i], zname, sizeof (zname)) < 0) { 517 /* 518 * getzonenamebyid should only fail if we raced with 519 * another process trying to shut down the zone. 520 * We assume this happened and ignore the error. 521 */ 522 if (errno != EINVAL) { 523 (void) fprintf(stderr, 524 gettext("%s: Unexpected error while " 525 "looking up zone %ul: %s.\n"), 526 cmdname, zones[i], strerror(errno)); 527 } 528 529 continue; 530 } 531 pid = fork(); 532 if (pid < 0) { 533 (void) fprintf(stderr, 534 gettext("%s: Zone \"%s\" could not be" 535 " halted (could not fork(): %s).\n"), 536 cmdname, zname, strerror(errno)); 537 continue; 538 } 539 if (pid == 0) { 540 (void) execl(ZONEADM_PROG, ZONEADM_PROG, 541 "-z", zname, "halt", NULL); 542 (void) fprintf(stderr, 543 gettext("%s: Zone \"%s\" could not be halted" 544 " (cannot exec(" ZONEADM_PROG "): %s).\n"), 545 cmdname, zname, strerror(errno)); 546 exit(0); 547 } 548 } 549 550 return (1); 551 } 552 553 /* 554 * This function tries to wait for all non-global zones to go away. 555 * It will timeout if no progress is made for 5 seconds, or a total of 556 * 30 seconds elapses. 557 */ 558 559 static void 560 check_zones_haltedness() 561 { 562 int t = 0, t_prog = 0; 563 size_t nz = 0, last_nz; 564 565 do { 566 last_nz = nz; 567 (void) zone_list(NULL, &nz); 568 if (nz == 1) 569 return; 570 571 (void) sleep(1); 572 573 if (last_nz > nz) 574 t_prog = 0; 575 576 t++; 577 t_prog++; 578 579 if (t == 10) { 580 if (nz == 2) { 581 (void) fprintf(stderr, 582 gettext("%s: Still waiting for 1 zone to " 583 "halt. Will wait up to 20 seconds.\n"), 584 cmdname); 585 } else { 586 (void) fprintf(stderr, 587 gettext("%s: Still waiting for %i zones " 588 "to halt. Will wait up to 20 seconds.\n"), 589 cmdname, nz - 1); 590 } 591 } 592 593 } while ((t < 30) && (t_prog < 5)); 594 } 595 596 597 /* 598 * Validate that this is a root disk or dataset 599 * Returns 0 if it is a root disk or dataset; 600 * returns 1 if it is a disk argument or dataset, but not valid or not root; 601 * returns -1 if it is not a valid argument or a disk argument. 602 */ 603 static int 604 validate_disk(char *arg, char *mountpoint) 605 { 606 static char root_dev_path[] = "/dev/dsk"; 607 char kernpath[MAXPATHLEN]; 608 struct stat64 statbuf; 609 int rc = 0; 610 611 if (strlen(arg) > MAXPATHLEN) { 612 (void) fprintf(stderr, 613 gettext("%s: Argument is too long\n"), cmdname); 614 return (-1); 615 } 616 617 bcopy(FASTBOOT_MOUNTPOINT, mountpoint, sizeof (FASTBOOT_MOUNTPOINT)); 618 619 if (strstr(arg, mountpoint) == NULL) { 620 /* 621 * Do a force umount just in case some other filesystem has 622 * been mounted there. 623 */ 624 (void) umount2(mountpoint, MS_FORCE); 625 } 626 627 /* Create the directory if it doesn't already exist */ 628 if (lstat64(mountpoint, &statbuf) != 0) { 629 if (mkdirp(mountpoint, 0755) != 0) { 630 (void) fprintf(stderr, 631 gettext("Failed to create mountpoint %s\n"), 632 mountpoint); 633 return (-1); 634 } 635 } 636 637 if (strncmp(arg, root_dev_path, strlen(root_dev_path)) == 0) { 638 /* ufs root disk argument */ 639 rc = validate_ufs_disk(arg, mountpoint); 640 } else { 641 /* zfs root pool argument */ 642 rc = validate_zfs_pool(arg, mountpoint); 643 } 644 645 if (rc != 0) 646 return (rc); 647 648 (void) snprintf(kernpath, MAXPATHLEN, "%s/platform/i86pc/kernel/unix", 649 mountpoint); 650 651 if (stat64(kernpath, &statbuf) != 0) { 652 (void) fprintf(stderr, 653 gettext("%s: %s is not a root disk or dataset\n"), 654 cmdname, arg); 655 return (1); 656 } 657 658 return (0); 659 } 660 661 662 static int 663 validate_ufs_disk(char *arg, char *mountpoint) 664 { 665 struct ufs_args ufs_args = { 0 }; 666 char mntopts[MNT_LINE_MAX] = MNTOPT_LARGEFILES; 667 668 /* perform the mount */ 669 ufs_args.flags = UFSMNT_LARGEFILES; 670 if (mount(arg, mountpoint, MS_DATA|MS_OPTIONSTR, 671 MNTTYPE_UFS, &ufs_args, sizeof (ufs_args), 672 mntopts, sizeof (mntopts)) != 0) { 673 perror(cmdname); 674 (void) fprintf(stderr, 675 gettext("%s: Failed to mount %s\n"), cmdname, arg); 676 return (-1); 677 } 678 679 return (0); 680 } 681 682 static int 683 validate_zfs_pool(char *arg, char *mountpoint) 684 { 685 zfs_handle_t *zhp = NULL; 686 char mntopts[MNT_LINE_MAX] = { '\0' }; 687 int rc = 0; 688 689 if ((g_zfs = libzfs_init()) == NULL) { 690 (void) fprintf(stderr, gettext("Internal error: failed to " 691 "initialize ZFS library\n")); 692 return (-1); 693 } 694 695 /* Try to open the dataset */ 696 if ((zhp = zfs_open(g_zfs, arg, 697 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_DATASET)) == NULL) 698 return (-1); 699 700 /* perform the mount */ 701 if (mount(zfs_get_name(zhp), mountpoint, MS_DATA|MS_OPTIONSTR|MS_RDONLY, 702 MNTTYPE_ZFS, NULL, 0, mntopts, sizeof (mntopts)) != 0) { 703 perror(cmdname); 704 (void) fprintf(stderr, 705 gettext("%s: Failed to mount %s\n"), cmdname, arg); 706 rc = -1; 707 } 708 709 validate_zfs_err_out: 710 if (zhp != NULL) 711 zfs_close(zhp); 712 713 libzfs_fini(g_zfs); 714 return (rc); 715 } 716 717 /* 718 * Return 0 if not zfs, or is zfs and have successfully constructed the 719 * boot argument; returns non-zero otherwise. 720 * At successful completion fpth contains pointer where mount point ends. 721 * NOTE: arg is supposed to be the resolved path 722 */ 723 static int 724 get_zfs_bootfs_arg(const char *arg, const char ** fpth, int *is_zfs, 725 char *bootfs_arg) 726 { 727 zfs_handle_t *zhp = NULL; 728 zpool_handle_t *zpoolp = NULL; 729 FILE *mtabp = NULL; 730 struct mnttab mnt; 731 char *poolname = NULL; 732 char physpath[MAXPATHLEN]; 733 char mntsp[ZFS_MAX_DATASET_NAME_LEN]; 734 char bootfs[ZFS_MAX_DATASET_NAME_LEN]; 735 int rc = 0; 736 size_t mntlen = 0; 737 size_t msz; 738 static char fmt[] = "-B zfs-bootfs=%s,bootpath=\"%s\""; 739 740 *fpth = arg; 741 *is_zfs = 0; 742 743 bzero(physpath, sizeof (physpath)); 744 bzero(bootfs, sizeof (bootfs)); 745 746 if ((mtabp = fopen(MNTTAB, "r")) == NULL) { 747 return (-1); 748 } 749 750 while (getmntent(mtabp, &mnt) == 0) { 751 if (strstr(arg, mnt.mnt_mountp) == arg && 752 (msz = strlen(mnt.mnt_mountp)) > mntlen) { 753 mntlen = msz; 754 *is_zfs = strcmp(MNTTYPE_ZFS, mnt.mnt_fstype) == 0; 755 (void) strlcpy(mntsp, mnt.mnt_special, sizeof (mntsp)); 756 } 757 } 758 759 (void) fclose(mtabp); 760 761 if (mntlen > 1) 762 *fpth += mntlen; 763 764 if (!*is_zfs) 765 return (0); 766 767 if ((g_zfs = libzfs_init()) == NULL) 768 return (-1); 769 770 /* Try to open the dataset */ 771 if ((zhp = zfs_open(g_zfs, mntsp, 772 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_DATASET)) == NULL) { 773 (void) fprintf(stderr, gettext("Cannot open %s\n"), mntsp); 774 rc = -1; 775 goto validate_zfs_err_out; 776 } 777 778 (void) strlcpy(bootfs, mntsp, sizeof (bootfs)); 779 780 if ((poolname = strtok(mntsp, "/")) == NULL) { 781 rc = -1; 782 goto validate_zfs_err_out; 783 } 784 785 if ((zpoolp = zpool_open(g_zfs, poolname)) == NULL) { 786 (void) fprintf(stderr, gettext("Cannot open %s\n"), poolname); 787 rc = -1; 788 goto validate_zfs_err_out; 789 } 790 791 if (zpool_get_physpath(zpoolp, physpath, sizeof (physpath)) != 0) { 792 (void) fprintf(stderr, gettext("Cannot find phys_path\n")); 793 rc = -1; 794 goto validate_zfs_err_out; 795 } 796 797 /* 798 * For the mirror physpath would contain the list of all 799 * bootable devices, pick up the first one. 800 */ 801 (void) strtok(physpath, " "); 802 if (snprintf(bootfs_arg, BOOTARGS_MAX, fmt, bootfs, physpath) >= 803 BOOTARGS_MAX) { 804 rc = E2BIG; 805 (void) fprintf(stderr, 806 gettext("Boot arguments are too long\n")); 807 } 808 809 validate_zfs_err_out: 810 if (zhp != NULL) 811 zfs_close(zhp); 812 813 if (zpoolp != NULL) 814 zpool_close(zpoolp); 815 816 libzfs_fini(g_zfs); 817 return (rc); 818 } 819 820 /* 821 * Validate that the file exists, and is an ELF file. 822 * Returns 0 on success, -1 on failure. 823 */ 824 static int 825 validate_unix(char *arg, int *mplen, int *is_zfs, char *bootfs_arg) 826 { 827 const char *location; 828 int class, format; 829 unsigned char ident[EI_NIDENT]; 830 char physpath[MAXPATHLEN]; 831 int elffd = -1; 832 size_t sz; 833 834 if ((sz = resolvepath(arg, physpath, sizeof (physpath) - 1)) == 835 (size_t)-1) { 836 (void) fprintf(stderr, 837 gettext("Cannot resolve path for %s: %s\n"), 838 arg, strerror(errno)); 839 return (-1); 840 } 841 (void) strlcpy(arg, physpath, sz + 1); 842 843 if (strlen(arg) > MAXPATHLEN) { 844 (void) fprintf(stderr, 845 gettext("%s: New kernel name is too long\n"), cmdname); 846 return (-1); 847 } 848 849 if (strncmp(basename(arg), "unix", 4) != 0) { 850 (void) fprintf(stderr, 851 gettext("%s: %s: Kernel name must be unix\n"), 852 cmdname, arg); 853 return (-1); 854 } 855 856 if (get_zfs_bootfs_arg(arg, &location, is_zfs, bootfs_arg) != 0) 857 goto err_out; 858 859 *mplen = location - arg; 860 861 if (strstr(location, "/boot/platform") == location) { 862 /* 863 * Rebooting to failsafe. 864 * Clear bootfs_arg and is_zfs flag. 865 */ 866 bootfs_arg[0] = 0; 867 *is_zfs = 0; 868 } else if (strstr(location, "/platform") != location) { 869 (void) fprintf(stderr, 870 gettext("%s: %s: No /platform in file name\n"), 871 cmdname, arg); 872 goto err_out; 873 } 874 875 if ((elffd = open64(arg, O_RDONLY)) < 0 || 876 (pread64(elffd, ident, EI_NIDENT, 0) != EI_NIDENT)) { 877 (void) fprintf(stderr, "%s: %s: %s\n", 878 cmdname, arg, strerror(errno)); 879 goto err_out; 880 } 881 882 class = ident[EI_CLASS]; 883 884 if ((class != ELFCLASS32 && class != ELFCLASS64) || 885 memcmp(&ident[EI_MAG0], ELFMAG, 4) != 0) { 886 (void) fprintf(stderr, 887 gettext("%s: %s: Not a valid ELF file\n"), cmdname, arg); 888 goto err_out; 889 } 890 891 format = ident[EI_DATA]; 892 893 if (format != CUR_ELFDATA) { 894 (void) fprintf(stderr, gettext("%s: %s: Invalid data format\n"), 895 cmdname, arg); 896 goto err_out; 897 } 898 899 return (0); 900 901 err_out: 902 if (elffd >= 0) { 903 (void) close(elffd); 904 elffd = -1; 905 } 906 return (-1); 907 } 908 909 static int 910 halt_exec(const char *path, ...) 911 { 912 pid_t pid; 913 int i; 914 int st; 915 const char *arg; 916 va_list vp; 917 const char *argv[256]; 918 919 if ((pid = fork()) == -1) { 920 return (errno); 921 } else if (pid == 0) { 922 (void) fclose(stdout); 923 (void) fclose(stderr); 924 925 argv[0] = path; 926 i = 1; 927 928 va_start(vp, path); 929 930 do { 931 arg = va_arg(vp, const char *); 932 argv[i] = arg; 933 } while (arg != NULL && 934 ++i != sizeof (argv) / sizeof (argv[0])); 935 936 va_end(vp); 937 938 (void) execve(path, (char * const *)argv, NULL); 939 (void) fprintf(stderr, gettext("Cannot execute %s: %s\n"), 940 path, strerror(errno)); 941 exit(-1); 942 } else { 943 if (waitpid(pid, &st, 0) == pid && 944 !WIFSIGNALED(st) && WIFEXITED(st)) 945 st = WEXITSTATUS(st); 946 else 947 st = -1; 948 } 949 return (st); 950 } 951 952 /* 953 * Mount the specified BE. 954 * 955 * Upon success returns zero and copies bename string to mountpoint[] 956 */ 957 static int 958 fastboot_bename(const char *bename, char *mountpoint, size_t mpsz) 959 { 960 int rc; 961 962 /* 963 * Attempt to unmount the BE first in case it's already mounted 964 * elsewhere. 965 */ 966 (void) halt_exec(BEADM_PROG, "umount", bename, NULL); 967 968 if ((rc = halt_exec(BEADM_PROG, "mount", bename, FASTBOOT_MOUNTPOINT, 969 NULL)) != 0) 970 (void) fprintf(stderr, 971 gettext("%s: Unable to mount BE \"%s\" at %s\n"), 972 cmdname, bename, FASTBOOT_MOUNTPOINT); 973 else 974 (void) strlcpy(mountpoint, FASTBOOT_MOUNTPOINT, mpsz); 975 976 return (rc); 977 } 978 979 /* 980 * Returns 0 on successful parsing of the arguments; 981 * returns EINVAL on parsing failures that should abort the reboot attempt; 982 * returns other error code to fall back to regular reboot. 983 */ 984 static int 985 parse_fastboot_args(char *bootargs_buf, size_t buf_size, 986 int *is_dryrun, const char *bename) 987 { 988 char mountpoint[MAXPATHLEN]; 989 char bootargs_saved[BOOTARGS_MAX]; 990 char bootargs_scratch[BOOTARGS_MAX]; 991 char bootfs_arg[BOOTARGS_MAX]; 992 char unixfile[BOOTARGS_MAX]; 993 char *head, *newarg; 994 int buflen; /* length of the bootargs_buf */ 995 int mplen; /* length of the mount point */ 996 int rootlen = 0; /* length of the root argument */ 997 int unixlen = 0; /* length of the unix argument */ 998 int off = 0; /* offset into the new boot argument */ 999 int is_zfs = 0; 1000 int rc = 0; 1001 1002 bzero(mountpoint, sizeof (mountpoint)); 1003 1004 /* 1005 * If argc is not 0, buflen is length of the argument being passed in; 1006 * else it is 0 as bootargs_buf has been initialized to all 0's. 1007 */ 1008 buflen = strlen(bootargs_buf); 1009 1010 /* Save a copy of the original argument */ 1011 bcopy(bootargs_buf, bootargs_saved, buflen); 1012 bzero(&bootargs_saved[buflen], sizeof (bootargs_saved) - buflen); 1013 1014 /* Save another copy to be used by strtok */ 1015 bcopy(bootargs_buf, bootargs_scratch, buflen); 1016 bzero(&bootargs_scratch[buflen], sizeof (bootargs_scratch) - buflen); 1017 head = &bootargs_scratch[0]; 1018 1019 /* Get the first argument */ 1020 newarg = strtok(bootargs_scratch, " "); 1021 1022 /* 1023 * If this is a dry run request, verify that the drivers can handle 1024 * fast reboot. 1025 */ 1026 if (newarg && strncasecmp(newarg, "dryrun", strlen("dryrun")) == 0) { 1027 *is_dryrun = 1; 1028 (void) system("/usr/sbin/devfsadm"); 1029 } 1030 1031 /* 1032 * Always perform a dry run to identify all the drivers that 1033 * need to implement devo_reset(). 1034 */ 1035 if (uadmin(A_SHUTDOWN, AD_FASTREBOOT_DRYRUN, 1036 (uintptr_t)bootargs_saved) != 0) { 1037 (void) fprintf(stderr, gettext("%s: Not all drivers " 1038 "have implemented quiesce(9E)\n" 1039 "\tPlease see /var/adm/messages for drivers that haven't\n" 1040 "\timplemented quiesce(9E).\n"), cmdname); 1041 } else if (*is_dryrun) { 1042 (void) fprintf(stderr, gettext("%s: All drivers have " 1043 "implemented quiesce(9E)\n"), cmdname); 1044 } 1045 1046 /* Return if it is a true dry run. */ 1047 if (*is_dryrun) 1048 return (rc); 1049 1050 #if defined(__x86) 1051 /* Read boot args from Boot Environment */ 1052 if ((bootargs_buf[0] == 0 || isdigit(bootargs_buf[0])) && 1053 bename == NULL) { 1054 /* 1055 * If no boot arguments are given, or a BE entry 1056 * number is provided, process the boot arguments from BE. 1057 */ 1058 int entnum; 1059 if (bootargs_buf[0] == 0) 1060 entnum = BE_ENTRY_DEFAULT; 1061 else { 1062 errno = 0; 1063 entnum = strtoul(bootargs_buf, NULL, 10); 1064 rc = errno; 1065 } 1066 1067 if (rc == 0 && (rc = be_get_boot_args(&fbarg, entnum)) == 0) { 1068 if (strlcpy(bootargs_buf, fbarg, 1069 buf_size) >= buf_size) { 1070 free(fbarg); 1071 bcopy(bootargs_saved, bootargs_buf, buf_size); 1072 rc = E2BIG; 1073 } 1074 } 1075 /* Failed to read FB args, fall back to normal reboot */ 1076 if (rc != 0) { 1077 (void) fprintf(stderr, 1078 gettext("%s: Failed to process boot " 1079 "arguments from Boot Environment.\n"), cmdname); 1080 (void) fprintf(stderr, 1081 gettext("%s: Falling back to regular reboot.\n"), 1082 cmdname); 1083 return (-1); 1084 } 1085 /* No need to process further */ 1086 fbarg_used = fbarg; 1087 fbarg_entnum = entnum; 1088 return (0); 1089 } 1090 #endif /* __x86 */ 1091 1092 /* Zero out the boot argument buffer as we will reconstruct it */ 1093 bzero(bootargs_buf, buf_size); 1094 bzero(bootfs_arg, sizeof (bootfs_arg)); 1095 bzero(unixfile, sizeof (unixfile)); 1096 1097 if (bename && (rc = fastboot_bename(bename, mountpoint, 1098 sizeof (mountpoint))) != 0) 1099 return (EINVAL); 1100 1101 1102 /* 1103 * If BE is not specified, look for disk argument to construct 1104 * mountpoint; if BE has been specified, mountpoint has already been 1105 * constructed. 1106 */ 1107 if (newarg && newarg[0] != '-' && !bename) { 1108 int tmprc; 1109 1110 if ((tmprc = validate_disk(newarg, mountpoint)) == 0) { 1111 /* 1112 * The first argument is a valid root argument. 1113 * Get the next argument. 1114 */ 1115 newarg = strtok(NULL, " "); 1116 rootlen = (newarg) ? (newarg - head) : buflen; 1117 (void) strlcpy(fastboot_mounted, mountpoint, 1118 sizeof (fastboot_mounted)); 1119 1120 } else if (tmprc == -1) { 1121 /* 1122 * Not a disk argument. Use / as default root. 1123 */ 1124 bcopy("/", mountpoint, 1); 1125 bzero(&mountpoint[1], sizeof (mountpoint) - 1); 1126 } else { 1127 /* 1128 * Disk argument, but not valid or not root. 1129 * Return failure. 1130 */ 1131 return (EINVAL); 1132 } 1133 } 1134 1135 /* 1136 * Make mountpoint the first part of unixfile. 1137 * If there is not disk argument, and BE has not been specified, 1138 * mountpoint could be empty. 1139 */ 1140 mplen = strlen(mountpoint); 1141 bcopy(mountpoint, unixfile, mplen); 1142 1143 /* 1144 * Look for unix argument 1145 */ 1146 if (newarg && newarg[0] != '-') { 1147 bcopy(newarg, &unixfile[mplen], strlen(newarg)); 1148 newarg = strtok(NULL, " "); 1149 rootlen = (newarg) ? (newarg - head) : buflen; 1150 } else if (mplen != 0) { 1151 /* 1152 * No unix argument, but mountpoint is not empty, use 1153 * /platform/i86pc/$ISADIR/kernel/unix as default. 1154 */ 1155 char isa[20]; 1156 1157 if (sysinfo(SI_ARCHITECTURE_64, isa, sizeof (isa)) != -1) 1158 (void) snprintf(&unixfile[mplen], 1159 sizeof (unixfile) - mplen, 1160 "/platform/i86pc/kernel/%s/unix", isa); 1161 else if (sysinfo(SI_ARCHITECTURE_32, isa, sizeof (isa)) != -1) { 1162 (void) snprintf(&unixfile[mplen], 1163 sizeof (unixfile) - mplen, 1164 "/platform/i86pc/kernel/unix"); 1165 } else { 1166 (void) fprintf(stderr, 1167 gettext("%s: Unknown architecture"), cmdname); 1168 return (EINVAL); 1169 } 1170 } 1171 1172 /* 1173 * We now have the complete unix argument. Verify that it exists and 1174 * is an ELF file. Split the argument up into mountpoint and unix 1175 * portions again. This is necessary to handle cases where mountpoint 1176 * is specified on the command line as part of the unix argument, 1177 * such as this: 1178 * # reboot -f /.alt/platform/i86pc/kernel/amd64/unix 1179 */ 1180 unixlen = strlen(unixfile); 1181 if (unixlen > 0) { 1182 if (validate_unix(unixfile, &mplen, &is_zfs, 1183 bootfs_arg) != 0) { 1184 /* Not a valid unix file */ 1185 return (EINVAL); 1186 } else { 1187 int space = 0; 1188 /* 1189 * Construct boot argument. 1190 */ 1191 unixlen = strlen(unixfile); 1192 1193 /* 1194 * mdep cannot start with space because bootadm 1195 * creates bogus menu entries if it does. 1196 */ 1197 if (mplen > 0) { 1198 bcopy(unixfile, bootargs_buf, mplen); 1199 (void) strcat(bootargs_buf, " "); 1200 space = 1; 1201 } 1202 bcopy(&unixfile[mplen], &bootargs_buf[mplen + space], 1203 unixlen - mplen); 1204 (void) strcat(bootargs_buf, " "); 1205 off += unixlen + space + 1; 1206 } 1207 } else { 1208 /* Check to see if root is zfs */ 1209 const char *dp; 1210 (void) get_zfs_bootfs_arg("/", &dp, &is_zfs, bootfs_arg); 1211 } 1212 1213 if (is_zfs && (buflen != 0 || bename != NULL)) { 1214 /* do not copy existing zfs boot args */ 1215 if (strstr(&bootargs_saved[rootlen], "-B") == NULL || 1216 strstr(&bootargs_saved[rootlen], "zfs-bootfs=") == NULL || 1217 (strstr(&bootargs_saved[rootlen], "bootpath=") == NULL && 1218 strstr(&bootargs_saved[rootlen], "diskdevid=") == NULL)) 1219 /* LINTED E_SEC_SPRINTF_UNBOUNDED_COPY */ 1220 off += sprintf(bootargs_buf + off, "%s ", bootfs_arg); 1221 } 1222 1223 /* 1224 * Copy the rest of the arguments 1225 */ 1226 bcopy(&bootargs_saved[rootlen], &bootargs_buf[off], buflen - rootlen); 1227 1228 return (rc); 1229 } 1230 1231 #define MAXARGS 5 1232 1233 static void 1234 do_archives_update(int do_fast_reboot) 1235 { 1236 int r, i = 0; 1237 pid_t pid; 1238 char *cmd_argv[MAXARGS]; 1239 1240 1241 cmd_argv[i++] = "/sbin/bootadm"; 1242 cmd_argv[i++] = "-ea"; 1243 cmd_argv[i++] = "update_all"; 1244 if (do_fast_reboot) 1245 cmd_argv[i++] = "fastboot"; 1246 cmd_argv[i] = NULL; 1247 1248 r = posix_spawn(&pid, cmd_argv[0], NULL, NULL, cmd_argv, NULL); 1249 1250 /* if posix_spawn fails we emit a warning and continue */ 1251 1252 if (r != 0) 1253 (void) fprintf(stderr, gettext("%s: WARNING, unable to start " 1254 "boot archive update\n"), cmdname); 1255 else 1256 while (waitpid(pid, NULL, 0) == -1 && errno == EINTR) 1257 ; 1258 } 1259 1260 int 1261 main(int argc, char *argv[]) 1262 { 1263 int qflag = 0, needlog = 1, nosync = 0; 1264 int fast_reboot = 0; 1265 int prom_reboot = 0; 1266 uintptr_t mdep = 0; 1267 int cmd, fcn, c, aval, r; 1268 const char *usage; 1269 const char *optstring; 1270 zoneid_t zoneid = getzoneid(); 1271 int need_check_zones = 0; 1272 char bootargs_buf[BOOTARGS_MAX]; 1273 char *bootargs_orig = NULL; 1274 char *bename = NULL; 1275 1276 const char * const resetting = "/etc/svc/volatile/resetting"; 1277 1278 (void) setlocale(LC_ALL, ""); 1279 (void) textdomain(TEXT_DOMAIN); 1280 1281 cmdname = basename(argv[0]); 1282 1283 if (strcmp(cmdname, "halt") == 0) { 1284 (void) audit_halt_setup(argc, argv); 1285 optstring = "dlnqy"; 1286 usage = gettext("usage: %s [ -dlnqy ]\n"); 1287 cmd = A_SHUTDOWN; 1288 fcn = AD_HALT; 1289 } else if (strcmp(cmdname, "poweroff") == 0) { 1290 (void) audit_halt_setup(argc, argv); 1291 optstring = "dlnqy"; 1292 usage = gettext("usage: %s [ -dlnqy ]\n"); 1293 cmd = A_SHUTDOWN; 1294 fcn = AD_POWEROFF; 1295 } else if (strcmp(cmdname, "reboot") == 0) { 1296 (void) audit_reboot_setup(); 1297 #if defined(__x86) 1298 optstring = "dlnqpfe:"; 1299 usage = gettext("usage: %s [ -dlnq(p|fe:) ] [ boot args ]\n"); 1300 #else 1301 optstring = "dlnqfp"; 1302 usage = gettext("usage: %s [ -dlnq(p|f) ] [ boot args ]\n"); 1303 #endif 1304 cmd = A_SHUTDOWN; 1305 fcn = AD_BOOT; 1306 } else { 1307 (void) fprintf(stderr, 1308 gettext("%s: not installed properly\n"), cmdname); 1309 return (1); 1310 } 1311 1312 while ((c = getopt(argc, argv, optstring)) != EOF) { 1313 switch (c) { 1314 case 'd': 1315 if (zoneid == GLOBAL_ZONEID) 1316 cmd = A_DUMP; 1317 else { 1318 (void) fprintf(stderr, 1319 gettext("%s: -d only valid from global" 1320 " zone\n"), cmdname); 1321 return (1); 1322 } 1323 break; 1324 case 'l': 1325 needlog = 0; 1326 break; 1327 case 'n': 1328 nosync = 1; 1329 break; 1330 case 'q': 1331 qflag = 1; 1332 break; 1333 case 'y': 1334 /* 1335 * Option ignored for backwards compatibility. 1336 */ 1337 break; 1338 case 'f': 1339 fast_reboot = 1; 1340 break; 1341 case 'p': 1342 prom_reboot = 1; 1343 break; 1344 #if defined(__x86) 1345 case 'e': 1346 bename = optarg; 1347 break; 1348 #endif 1349 default: 1350 /* 1351 * TRANSLATION_NOTE 1352 * Don't translate the words "halt" or "reboot" 1353 */ 1354 (void) fprintf(stderr, usage, cmdname); 1355 return (1); 1356 } 1357 } 1358 1359 argc -= optind; 1360 argv += optind; 1361 1362 if (argc != 0) { 1363 if (fcn != AD_BOOT) { 1364 (void) fprintf(stderr, usage, cmdname); 1365 return (1); 1366 } 1367 1368 /* Gather the arguments into bootargs_buf. */ 1369 if (gather_args(argv, bootargs_buf, sizeof (bootargs_buf)) != 1370 0) { 1371 (void) fprintf(stderr, 1372 gettext("%s: Boot arguments too long.\n"), cmdname); 1373 return (1); 1374 } 1375 1376 bootargs_orig = strdup(bootargs_buf); 1377 mdep = (uintptr_t)bootargs_buf; 1378 } else { 1379 /* 1380 * Initialize it to 0 in case of fastboot, the buffer 1381 * will be used. 1382 */ 1383 bzero(bootargs_buf, sizeof (bootargs_buf)); 1384 } 1385 1386 if (geteuid() != 0) { 1387 (void) fprintf(stderr, 1388 gettext("%s: permission denied\n"), cmdname); 1389 goto fail; 1390 } 1391 1392 if (fast_reboot && prom_reboot) { 1393 (void) fprintf(stderr, 1394 gettext("%s: -p and -f are mutually exclusive\n"), 1395 cmdname); 1396 return (EINVAL); 1397 } 1398 /* 1399 * Check whether fast reboot is the default operating mode 1400 */ 1401 if (fcn == AD_BOOT && !fast_reboot && !prom_reboot && 1402 zoneid == GLOBAL_ZONEID) { 1403 fast_reboot = scf_is_fastboot_default(); 1404 1405 } 1406 1407 if (bename && !fast_reboot) { 1408 (void) fprintf(stderr, gettext("%s: -e only valid with -f\n"), 1409 cmdname); 1410 return (EINVAL); 1411 } 1412 1413 #if defined(__sparc) 1414 if (fast_reboot) { 1415 fast_reboot = 2; /* need to distinguish each case */ 1416 } 1417 #endif 1418 1419 /* 1420 * If fast reboot, do some sanity check on the argument 1421 */ 1422 if (fast_reboot == 1) { 1423 int rc; 1424 int is_dryrun = 0; 1425 1426 if (zoneid != GLOBAL_ZONEID) { 1427 (void) fprintf(stderr, 1428 gettext("%s: Fast reboot only valid from global" 1429 " zone\n"), cmdname); 1430 return (EINVAL); 1431 } 1432 1433 rc = parse_fastboot_args(bootargs_buf, sizeof (bootargs_buf), 1434 &is_dryrun, bename); 1435 1436 /* 1437 * If dry run, or if arguments are invalid, return. 1438 */ 1439 if (is_dryrun) 1440 return (rc); 1441 else if (rc == EINVAL) 1442 goto fail; 1443 else if (rc != 0) 1444 fast_reboot = 0; 1445 1446 /* 1447 * For all the other errors, we continue on in case user 1448 * user want to force fast reboot, or fall back to regular 1449 * reboot. 1450 */ 1451 if (strlen(bootargs_buf) != 0) 1452 mdep = (uintptr_t)bootargs_buf; 1453 } 1454 1455 #if 0 /* For debugging */ 1456 if (mdep != NULL) 1457 (void) fprintf(stderr, "mdep = %s\n", (char *)mdep); 1458 #endif 1459 1460 if (needlog) { 1461 char *user = getlogin(); 1462 struct passwd *pw; 1463 char *tty; 1464 1465 openlog(cmdname, 0, LOG_AUTH); 1466 if (user == NULL && (pw = getpwuid(getuid())) != NULL) 1467 user = pw->pw_name; 1468 if (user == NULL) 1469 user = "root"; 1470 1471 tty = ttyname(1); 1472 1473 if (tty == NULL) 1474 syslog(LOG_CRIT, "initiated by %s", user); 1475 else 1476 syslog(LOG_CRIT, "initiated by %s on %s", user, tty); 1477 } 1478 1479 /* 1480 * We must assume success and log it before auditd is terminated. 1481 */ 1482 if (fcn == AD_BOOT) 1483 aval = audit_reboot_success(); 1484 else 1485 aval = audit_halt_success(); 1486 1487 if (aval == -1) { 1488 (void) fprintf(stderr, 1489 gettext("%s: can't turn off auditd\n"), cmdname); 1490 if (needlog) 1491 (void) sleep(5); /* Give syslogd time to record this */ 1492 } 1493 1494 (void) signal(SIGHUP, SIG_IGN); /* for remote connections */ 1495 1496 /* 1497 * We start to fork a bunch of zoneadms to halt any active zones. 1498 * This will proceed with halt in parallel until we call 1499 * check_zone_haltedness later on. 1500 */ 1501 if (zoneid == GLOBAL_ZONEID && cmd != A_DUMP) { 1502 need_check_zones = halt_zones(); 1503 } 1504 1505 #if defined(__x86) 1506 /* set new default entry in the GRUB entry */ 1507 if (fbarg_entnum != BE_ENTRY_DEFAULT) { 1508 char buf[32]; 1509 (void) snprintf(buf, sizeof (buf), "default=%u", fbarg_entnum); 1510 (void) halt_exec(BOOTADM_PROG, "set-menu", buf, NULL); 1511 } 1512 #endif /* __x86 */ 1513 1514 /* if we're dumping, do the archive update here and don't defer it */ 1515 if (cmd == A_DUMP && zoneid == GLOBAL_ZONEID && !nosync) 1516 do_archives_update(fast_reboot); 1517 1518 /* 1519 * If we're not forcing a crash dump, mark the system as quiescing for 1520 * smf(5)'s benefit, and idle the init process. 1521 */ 1522 if (cmd != A_DUMP) { 1523 if (direct_init(PCDSTOP) == -1) { 1524 /* 1525 * TRANSLATION_NOTE 1526 * Don't translate the word "init" 1527 */ 1528 (void) fprintf(stderr, 1529 gettext("%s: can't idle init\n"), cmdname); 1530 goto fail; 1531 } 1532 1533 if (creat(resetting, 0755) == -1) 1534 (void) fprintf(stderr, 1535 gettext("%s: could not create %s.\n"), 1536 cmdname, resetting); 1537 } 1538 1539 /* 1540 * Make sure we don't get stopped by a jobcontrol shell 1541 * once we start killing everybody. 1542 */ 1543 (void) signal(SIGTSTP, SIG_IGN); 1544 (void) signal(SIGTTIN, SIG_IGN); 1545 (void) signal(SIGTTOU, SIG_IGN); 1546 (void) signal(SIGPIPE, SIG_IGN); 1547 (void) signal(SIGTERM, SIG_IGN); 1548 1549 /* 1550 * Try to stop gdm so X has a chance to return the screen and 1551 * keyboard to a sane state. 1552 */ 1553 if (fast_reboot == 1 && stop_gdm() != 0) { 1554 (void) fprintf(stderr, 1555 gettext("%s: Falling back to regular reboot.\n"), cmdname); 1556 fast_reboot = 0; 1557 mdep = (uintptr_t)bootargs_orig; 1558 } else if (bootargs_orig) { 1559 free(bootargs_orig); 1560 } 1561 1562 if (cmd != A_DUMP) { 1563 /* 1564 * Stop all restarters so they do not try to restart services 1565 * that are terminated. 1566 */ 1567 stop_restarters(); 1568 1569 /* 1570 * Wait a little while for zones to shutdown. 1571 */ 1572 if (need_check_zones) { 1573 check_zones_haltedness(); 1574 1575 (void) fprintf(stderr, 1576 gettext("%s: Completing system halt.\n"), 1577 cmdname); 1578 } 1579 } 1580 1581 /* 1582 * If we're not forcing a crash dump, give everyone 5 seconds to 1583 * handle a SIGTERM and clean up properly. 1584 */ 1585 if (cmd != A_DUMP) { 1586 if (zoneid == GLOBAL_ZONEID && !nosync) 1587 do_archives_update(fast_reboot); 1588 (void) kill(-1, SIGTERM); 1589 (void) sleep(5); 1590 } 1591 1592 (void) signal(SIGINT, SIG_IGN); 1593 1594 if (!qflag && !nosync) { 1595 struct utmpx wtmpx; 1596 1597 bzero(&wtmpx, sizeof (struct utmpx)); 1598 (void) strcpy(wtmpx.ut_line, "~"); 1599 (void) time(&wtmpx.ut_tv.tv_sec); 1600 1601 if (cmd == A_DUMP) 1602 (void) strcpy(wtmpx.ut_name, "crash dump"); 1603 else 1604 (void) strcpy(wtmpx.ut_name, "shutdown"); 1605 1606 (void) updwtmpx(WTMPX_FILE, &wtmpx); 1607 sync(); 1608 } 1609 1610 if (cmd == A_DUMP && nosync != 0) 1611 (void) uadmin(A_DUMP, AD_NOSYNC, 0); 1612 1613 if (fast_reboot) 1614 fcn = AD_FASTREBOOT; 1615 1616 if (uadmin(cmd, fcn, mdep) == -1) 1617 (void) fprintf(stderr, "%s: uadmin failed: %s\n", 1618 cmdname, strerror(errno)); 1619 else 1620 (void) fprintf(stderr, "%s: uadmin unexpectedly returned 0\n", 1621 cmdname); 1622 1623 do { 1624 r = remove(resetting); 1625 } while (r != 0 && errno == EINTR); 1626 1627 if (r != 0 && errno != ENOENT) 1628 (void) fprintf(stderr, gettext("%s: could not remove %s.\n"), 1629 cmdname, resetting); 1630 1631 if (direct_init(PCRUN) == -1) { 1632 /* 1633 * TRANSLATION_NOTE 1634 * Don't translate the word "init" 1635 */ 1636 (void) fprintf(stderr, 1637 gettext("%s: can't resume init\n"), cmdname); 1638 } 1639 1640 continue_restarters(); 1641 1642 if (get_initpid() != -1) 1643 /* tell init to restate current level */ 1644 (void) kill(get_initpid(), SIGHUP); 1645 1646 fail: 1647 if (fcn == AD_BOOT) 1648 (void) audit_reboot_fail(); 1649 else 1650 (void) audit_halt_fail(); 1651 1652 if (fast_reboot == 1) { 1653 if (bename) { 1654 (void) halt_exec(BEADM_PROG, "umount", bename, NULL); 1655 1656 } else if (strlen(fastboot_mounted) != 0) { 1657 (void) umount(fastboot_mounted); 1658 #if defined(__x86) 1659 } else { 1660 free(fbarg_used); 1661 #endif /* __x86 */ 1662 } 1663 } 1664 1665 return (1); 1666 } 1667