contrib/bind9/bin/named/main.c

   1 /*
   2  * Copyright (C) 2004-2015  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /*! \file */
  19
  20 #include <config.h>
  21
  22 #include <ctype.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include <isc/app.h>
  27 #include <isc/backtrace.h>
  28 #include <isc/commandline.h>
  29 #include <isc/dir.h>
  30 #include <isc/entropy.h>
  31 #include <isc/file.h>
  32 #include <isc/hash.h>
  33 #include <isc/os.h>
  34 #include <isc/platform.h>
  35 #include <isc/print.h>
  36 #include <isc/resource.h>
  37 #include <isc/stdio.h>
  38 #include <isc/string.h>
  39 #include <isc/task.h>
  40 #include <isc/timer.h>
  41 #include <isc/util.h>
  42
  43 #include <isccc/result.h>
  44
  45 #include <dns/dispatch.h>
  46 #include <dns/name.h>
  47 #include <dns/result.h>
  48 #include <dns/view.h>
  49
  50 #include <dst/result.h>
  51
  52 #include <dlz/dlz_dlopen_driver.h>
  53
  54 #ifdef HAVE_GPERFTOOLS_PROFILER
  55 #include <gperftools/profiler.h>
  56 #endif
  57
  58 /*
  59  * Defining NS_MAIN provides storage declarations (rather than extern)
  60  * for variables in named/globals.h.
  61  */
  62 #define NS_MAIN 1
  63
  64 #include <named/builtin.h>
  65 #include <named/control.h>
  66 #include <named/globals.h>      /* Explicit, though named/log.h includes it. */
  67 #include <named/interfacemgr.h>
  68 #include <named/log.h>
  69 #include <named/os.h>
  70 #include <named/server.h>
  71 #include <named/lwresd.h>
  72 #include <named/main.h>
  73 #ifdef HAVE_LIBSCF
  74 #include <named/ns_smf_globals.h>
  75 #endif
  76
  77 #ifdef OPENSSL
  78 #include <openssl/opensslv.h>
  79 #include <openssl/crypto.h>
  80 #endif
  81 #ifdef HAVE_LIBXML2
  82 #include <libxml/xmlversion.h>
  83 #endif
  84 /*
  85  * Include header files for database drivers here.
  86  */
  87 /* #include "xxdb.h" */
  88
  89 #ifdef CONTRIB_DLZ
  90 /*
  91  * Include contributed DLZ drivers if appropriate.
  92  */
  93 #include <dlz/dlz_drivers.h>
  94 #endif
  95
  96 /*
  97  * The maximum number of stack frames to dump on assertion failure.
  98  */
  99 #ifndef BACKTRACE_MAXFRAME
 100 #define BACKTRACE_MAXFRAME 128
 101 #endif
 102
 103 extern unsigned int dns_zone_mkey_hour;
 104 extern unsigned int dns_zone_mkey_day;
 105 extern unsigned int dns_zone_mkey_month;
 106
 107 static isc_boolean_t    want_stats = ISC_FALSE;
 108 static char             program_name[ISC_DIR_NAMEMAX] = "named";
 109 static char             absolute_conffile[ISC_DIR_PATHMAX];
 110 static char             saved_command_line[512];
 111 static char             version[512];
 112 static unsigned int     maxsocks = 0;
 113 static int              maxudp = 0;
 114
 115 void
 116 ns_main_earlywarning(const char *format, ...) {
 117         va_list args;
 118
 119         va_start(args, format);
 120         if (ns_g_lctx != NULL) {
 121                 isc_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 122                                NS_LOGMODULE_MAIN, ISC_LOG_WARNING,
 123                                format, args);
 124         } else {
 125                 fprintf(stderr, "%s: ", program_name);
 126                 vfprintf(stderr, format, args);
 127                 fprintf(stderr, "\n");
 128                 fflush(stderr);
 129         }
 130         va_end(args);
 131 }
 132
 133 void
 134 ns_main_earlyfatal(const char *format, ...) {
 135         va_list args;
 136
 137         va_start(args, format);
 138         if (ns_g_lctx != NULL) {
 139                 isc_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 140                                NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL,
 141                                format, args);
 142                 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 143                                NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL,
 144                                "exiting (due to early fatal error)");
 145         } else {
 146                 fprintf(stderr, "%s: ", program_name);
 147                 vfprintf(stderr, format, args);
 148                 fprintf(stderr, "\n");
 149                 fflush(stderr);
 150         }
 151         va_end(args);
 152
 153         exit(1);
 154 }
 155
 156 ISC_PLATFORM_NORETURN_PRE static void
 157 assertion_failed(const char *file, int line, isc_assertiontype_t type,
 158                  const char *cond) ISC_PLATFORM_NORETURN_POST;
 159
 160 static void
 161 assertion_failed(const char *file, int line, isc_assertiontype_t type,
 162                  const char *cond)
 163 {
 164         void *tracebuf[BACKTRACE_MAXFRAME];
 165         int i, nframes;
 166         isc_result_t result;
 167         const char *logsuffix = "";
 168         const char *fname;
 169
 170         /*
 171          * Handle assertion failures.
 172          */
 173
 174         if (ns_g_lctx != NULL) {
 175                 /*
 176                  * Reset the assertion callback in case it is the log
 177                  * routines causing the assertion.
 178                  */
 179                 isc_assertion_setcallback(NULL);
 180
 181                 result = isc_backtrace_gettrace(tracebuf, BACKTRACE_MAXFRAME,
 182                                                 &nframes);
 183                 if (result == ISC_R_SUCCESS && nframes > 0)
 184                         logsuffix = ", back trace";
 185                 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 186                               NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL,
 187                               "%s:%d: %s(%s) failed%s", file, line,
 188                               isc_assertion_typetotext(type), cond, logsuffix);
 189                 if (result == ISC_R_SUCCESS) {
 190                         for (i = 0; i < nframes; i++) {
 191                                 unsigned long offset;
 192
 193                                 fname = NULL;
 194                                 result = isc_backtrace_getsymbol(tracebuf[i],
 195                                                                  &fname,
 196                                                                  &offset);
 197                                 if (result == ISC_R_SUCCESS) {
 198                                         isc_log_write(ns_g_lctx,
 199                                                       NS_LOGCATEGORY_GENERAL,
 200                                                       NS_LOGMODULE_MAIN,
 201                                                       ISC_LOG_CRITICAL,
 202                                                       "#%d %p in %s()+0x%lx", i,
 203                                                       tracebuf[i], fname,
 204                                                       offset);
 205                                 } else {
 206                                         isc_log_write(ns_g_lctx,
 207                                                       NS_LOGCATEGORY_GENERAL,
 208                                                       NS_LOGMODULE_MAIN,
 209                                                       ISC_LOG_CRITICAL,
 210                                                       "#%d %p in ??", i,
 211                                                       tracebuf[i]);
 212                                 }
 213                         }
 214                 }
 215                 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 216                               NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL,
 217                               "exiting (due to assertion failure)");
 218         } else {
 219                 fprintf(stderr, "%s:%d: %s(%s) failed\n",
 220                         file, line, isc_assertion_typetotext(type), cond);
 221                 fflush(stderr);
 222         }
 223
 224         if (ns_g_coreok)
 225                 abort();
 226         exit(1);
 227 }
 228
 229 ISC_PLATFORM_NORETURN_PRE static void
 230 library_fatal_error(const char *file, int line, const char *format,
 231                     va_list args)
 232 ISC_FORMAT_PRINTF(3, 0) ISC_PLATFORM_NORETURN_POST;
 233
 234 static void
 235 library_fatal_error(const char *file, int line, const char *format,
 236                     va_list args)
 237 {
 238         /*
 239          * Handle isc_error_fatal() calls from our libraries.
 240          */
 241
 242         if (ns_g_lctx != NULL) {
 243                 /*
 244                  * Reset the error callback in case it is the log
 245                  * routines causing the assertion.
 246                  */
 247                 isc_error_setfatal(NULL);
 248
 249                 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 250                               NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL,
 251                               "%s:%d: fatal error:", file, line);
 252                 isc_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 253                                NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL,
 254                                format, args);
 255                 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 256                               NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL,
 257                               "exiting (due to fatal error in library)");
 258         } else {
 259                 fprintf(stderr, "%s:%d: fatal error: ", file, line);
 260                 vfprintf(stderr, format, args);
 261                 fprintf(stderr, "\n");
 262                 fflush(stderr);
 263         }
 264
 265         if (ns_g_coreok)
 266                 abort();
 267         exit(1);
 268 }
 269
 270 static void
 271 library_unexpected_error(const char *file, int line, const char *format,
 272                          va_list args) ISC_FORMAT_PRINTF(3, 0);
 273
 274 static void
 275 library_unexpected_error(const char *file, int line, const char *format,
 276                          va_list args)
 277 {
 278         /*
 279          * Handle isc_error_unexpected() calls from our libraries.
 280          */
 281
 282         if (ns_g_lctx != NULL) {
 283                 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 284                               NS_LOGMODULE_MAIN, ISC_LOG_ERROR,
 285                               "%s:%d: unexpected error:", file, line);
 286                 isc_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 287                                NS_LOGMODULE_MAIN, ISC_LOG_ERROR,
 288                                format, args);
 289         } else {
 290                 fprintf(stderr, "%s:%d: fatal error: ", file, line);
 291                 vfprintf(stderr, format, args);
 292                 fprintf(stderr, "\n");
 293                 fflush(stderr);
 294         }
 295 }
 296
 297 static void
 298 lwresd_usage(void) {
 299         fprintf(stderr,
 300                 "usage: lwresd [-4|-6] [-c conffile | -C resolvconffile] "
 301                 "[-d debuglevel]\n"
 302                 "              [-f|-g] [-n number_of_cpus] [-p port] "
 303                 "[-P listen-port] [-s]\n"
 304                 "              [-t chrootdir] [-u username] [-i pidfile]\n"
 305                 "              [-m {usage|trace|record|size|mctx}]\n");
 306 }
 307
 308 static void
 309 usage(void) {
 310         if (ns_g_lwresdonly) {
 311                 lwresd_usage();
 312                 return;
 313         }
 314         fprintf(stderr,
 315                 "usage: named [-4|-6] [-c conffile] [-d debuglevel] "
 316                 "[-E engine] [-f|-g]\n"
 317                 "             [-n number_of_cpus] [-p port] [-s] "
 318                 "[-t chrootdir] [-u username]\n"
 319                 "             [-m {usage|trace|record|size|mctx}]\n");
 320 }
 321
 322 static void
 323 save_command_line(int argc, char *argv[]) {
 324         int i;
 325         char *src;
 326         char *dst;
 327         char *eob;
 328         const char truncated[] = "...";
 329         isc_boolean_t quoted = ISC_FALSE;
 330
 331         dst = saved_command_line;
 332         eob = saved_command_line + sizeof(saved_command_line);
 333
 334         for (i = 1; i < argc && dst < eob; i++) {
 335                 *dst++ = ' ';
 336
 337                 src = argv[i];
 338                 while (*src != '\0' && dst < eob) {
 339                         /*
 340                          * This won't perfectly produce a shell-independent
 341                          * pastable command line in all circumstances, but
 342                          * comes close, and for practical purposes will
 343                          * nearly always be fine.
 344                          */
 345                         if (quoted || isalnum(*src & 0xff) ||
 346                             *src == '-' || *src == '_' ||
 347                             *src == '.' || *src == '/') {
 348                                 *dst++ = *src++;
 349                                 quoted = ISC_FALSE;
 350                         } else {
 351                                 *dst++ = '\\';
 352                                 quoted = ISC_TRUE;
 353                         }
 354                 }
 355         }
 356
 357         INSIST(sizeof(saved_command_line) >= sizeof(truncated));
 358
 359         if (dst == eob)
 360                 strcpy(eob - sizeof(truncated), truncated);
 361         else
 362                 *dst = '\0';
 363 }
 364
 365 static int
 366 parse_int(char *arg, const char *desc) {
 367         char *endp;
 368         int tmp;
 369         long int ltmp;
 370
 371         ltmp = strtol(arg, &endp, 10);
 372         tmp = (int) ltmp;
 373         if (*endp != '\0')
 374                 ns_main_earlyfatal("%s '%s' must be numeric", desc, arg);
 375         if (tmp < 0 || tmp != ltmp)
 376                 ns_main_earlyfatal("%s '%s' out of range", desc, arg);
 377         return (tmp);
 378 }
 379
 380 static struct flag_def {
 381         const char *name;
 382         unsigned int value;
 383 } mem_debug_flags[] = {
 384         { "trace",  ISC_MEM_DEBUGTRACE },
 385         { "record", ISC_MEM_DEBUGRECORD },
 386         { "usage", ISC_MEM_DEBUGUSAGE },
 387         { "size", ISC_MEM_DEBUGSIZE },
 388         { "mctx", ISC_MEM_DEBUGCTX },
 389         { NULL, 0 }
 390 };
 391
 392 static void
 393 set_flags(const char *arg, struct flag_def *defs, unsigned int *ret) {
 394         for (;;) {
 395                 const struct flag_def *def;
 396                 const char *end = strchr(arg, ',');
 397                 int arglen;
 398                 if (end == NULL)
 399                         end = arg + strlen(arg);
 400                 arglen = (int)(end - arg);
 401                 for (def = defs; def->name != NULL; def++) {
 402                         if (arglen == (int)strlen(def->name) &&
 403                             memcmp(arg, def->name, arglen) == 0) {
 404                                 *ret |= def->value;
 405                                 goto found;
 406                         }
 407                 }
 408                 ns_main_earlyfatal("unrecognized flag '%.*s'", arglen, arg);
 409          found:
 410                 if (*end == '\0')
 411                         break;
 412                 arg = end + 1;
 413         }
 414 }
 415
 416 static void
 417 parse_command_line(int argc, char *argv[]) {
 418         int ch;
 419         int port;
 420         const char *p;
 421
 422         save_command_line(argc, argv);
 423
 424         /* PLEASE keep options synchronized when main is hooked! */
 425 #define CMDLINE_FLAGS "46c:C:d:E:fFgi:lm:n:N:p:P:sS:t:T:U:u:vVx:"
 426         isc_commandline_errprint = ISC_FALSE;
 427         while ((ch = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) {
 428                 switch (ch) {
 429                 case '4':
 430                         if (ns_g_disable4)
 431                                 ns_main_earlyfatal("cannot specify -4 and -6");
 432                         if (isc_net_probeipv4() != ISC_R_SUCCESS)
 433                                 ns_main_earlyfatal("IPv4 not supported by OS");
 434                         isc_net_disableipv6();
 435                         ns_g_disable6 = ISC_TRUE;
 436                         break;
 437                 case '6':
 438                         if (ns_g_disable6)
 439                                 ns_main_earlyfatal("cannot specify -4 and -6");
 440                         if (isc_net_probeipv6() != ISC_R_SUCCESS)
 441                                 ns_main_earlyfatal("IPv6 not supported by OS");
 442                         isc_net_disableipv4();
 443                         ns_g_disable4 = ISC_TRUE;
 444                         break;
 445                 case 'c':
 446                         ns_g_conffile = isc_commandline_argument;
 447                         lwresd_g_conffile = isc_commandline_argument;
 448                         if (lwresd_g_useresolvconf)
 449                                 ns_main_earlyfatal("cannot specify -c and -C");
 450                         ns_g_conffileset = ISC_TRUE;
 451                         break;
 452                 case 'C':
 453                         lwresd_g_resolvconffile = isc_commandline_argument;
 454                         if (ns_g_conffileset)
 455                                 ns_main_earlyfatal("cannot specify -c and -C");
 456                         lwresd_g_useresolvconf = ISC_TRUE;
 457                         break;
 458                 case 'd':
 459                         ns_g_debuglevel = parse_int(isc_commandline_argument,
 460                                                     "debug level");
 461                         break;
 462                 case 'E':
 463                         ns_g_engine = isc_commandline_argument;
 464                         break;
 465                 case 'f':
 466                         ns_g_foreground = ISC_TRUE;
 467                         break;
 468                 case 'g':
 469                         ns_g_foreground = ISC_TRUE;
 470                         ns_g_logstderr = ISC_TRUE;
 471                         break;
 472                 /* XXXBEW -i should be removed */
 473                 case 'i':
 474                         lwresd_g_defaultpidfile = isc_commandline_argument;
 475                         break;
 476                 case 'l':
 477                         ns_g_lwresdonly = ISC_TRUE;
 478                         break;
 479                 case 'm':
 480                         set_flags(isc_commandline_argument, mem_debug_flags,
 481                                   &isc_mem_debugging);
 482                         break;
 483                 case 'N': /* Deprecated. */
 484                 case 'n':
 485                         ns_g_cpus = parse_int(isc_commandline_argument,
 486                                               "number of cpus");
 487                         if (ns_g_cpus == 0)
 488                                 ns_g_cpus = 1;
 489                         break;
 490                 case 'p':
 491                         port = parse_int(isc_commandline_argument, "port");
 492                         if (port < 1 || port > 65535)
 493                                 ns_main_earlyfatal("port '%s' out of range",
 494                                                    isc_commandline_argument);
 495                         ns_g_port = port;
 496                         break;
 497                 /* XXXBEW Should -P be removed? */
 498                 case 'P':
 499                         port = parse_int(isc_commandline_argument, "port");
 500                         if (port < 1 || port > 65535)
 501                                 ns_main_earlyfatal("port '%s' out of range",
 502                                                    isc_commandline_argument);
 503                         lwresd_g_listenport = port;
 504                         break;
 505                 case 's':
 506                         /* XXXRTH temporary syntax */
 507                         want_stats = ISC_TRUE;
 508                         break;
 509                 case 'S':
 510                         maxsocks = parse_int(isc_commandline_argument,
 511                                              "max number of sockets");
 512                         break;
 513                 case 't':
 514                         /* XXXJAB should we make a copy? */
 515                         ns_g_chrootdir = isc_commandline_argument;
 516                         break;
 517                 case 'T':       /* NOT DOCUMENTED */
 518                         /*
 519                          * clienttest: make clients single shot with their
 520                          *             own memory context.
 521                          */
 522                         if (!strcmp(isc_commandline_argument, "clienttest"))
 523                                 ns_g_clienttest = ISC_TRUE;
 524                         else if (!strcmp(isc_commandline_argument, "nosoa"))
 525                                 ns_g_nosoa = ISC_TRUE;
 526                         else if (!strcmp(isc_commandline_argument, "noaa"))
 527                                 ns_g_noaa = ISC_TRUE;
 528                         else if (!strcmp(isc_commandline_argument, "maxudp512"))
 529                                 maxudp = 512;
 530                         else if (!strcmp(isc_commandline_argument, "maxudp1460"))
 531                                 maxudp = 1460;
 532                         else if (!strcmp(isc_commandline_argument, "dropedns"))
 533                                 ns_g_dropedns = ISC_TRUE;
 534                         else if (!strcmp(isc_commandline_argument, "noedns"))
 535                                 ns_g_noedns = ISC_TRUE;
 536                         else if (!strncmp(isc_commandline_argument,
 537                                           "maxudp=", 7))
 538                                 maxudp = atoi(isc_commandline_argument + 7);
 539                         else if (!strcmp(isc_commandline_argument, "nosyslog"))
 540                                 ns_g_nosyslog = ISC_TRUE;
 541                         else if (!strcmp(isc_commandline_argument, "nonearest"))
 542                                 ns_g_nonearest = ISC_TRUE;
 543                         else if (!strncmp(isc_commandline_argument,
 544                                           "mkeytimers=", 11))
 545                         {
 546                                 p = strtok(isc_commandline_argument + 11, "/");
 547                                 if (p == NULL)
 548                                         ns_main_earlyfatal("bad mkeytimer");
 549                                 dns_zone_mkey_hour = atoi(p);
 550                                 if (dns_zone_mkey_hour == 0)
 551                                         ns_main_earlyfatal("bad mkeytimer");
 552
 553                                 p = strtok(NULL, "/");
 554                                 if (p == NULL) {
 555                                         dns_zone_mkey_day =
 556                                                 (24 * dns_zone_mkey_hour);
 557                                         dns_zone_mkey_month =
 558                                                 (30 * dns_zone_mkey_day);
 559                                         break;
 560                                 }
 561                                 dns_zone_mkey_day = atoi(p);
 562                                 if (dns_zone_mkey_day < dns_zone_mkey_hour)
 563                                         ns_main_earlyfatal("bad mkeytimer");
 564
 565                                 p = strtok(NULL, "/");
 566                                 if (p == NULL) {
 567                                         dns_zone_mkey_month =
 568                                                 (30 * dns_zone_mkey_day);
 569                                         break;
 570                                 }
 571                                 dns_zone_mkey_month = atoi(p);
 572                                 if (dns_zone_mkey_month < dns_zone_mkey_day)
 573                                         ns_main_earlyfatal("bad mkeytimer");
 574                         } else if (!strcmp(isc_commandline_argument, "notcp"))
 575                                 ns_g_notcp = ISC_TRUE;
 576                         else
 577                                 fprintf(stderr, "unknown -T flag '%s\n",
 578                                         isc_commandline_argument);
 579                         break;
 580                 case 'U':
 581                         ns_g_udpdisp = parse_int(isc_commandline_argument,
 582                                                  "number of UDP listeners "
 583                                                  "per interface");
 584                         break;
 585                 case 'u':
 586                         ns_g_username = isc_commandline_argument;
 587                         break;
 588                 case 'v':
 589                         printf("%s %s", ns_g_product, ns_g_version);
 590                         if (*ns_g_description != 0)
 591                                 printf(" %s", ns_g_description);
 592                         printf("\n");
 593                         exit(0);
 594                 case 'V':
 595                         printf("%s %s", ns_g_product, ns_g_version);
 596                         if (*ns_g_description != 0)
 597                                 printf(" %s", ns_g_description);
 598                         printf(" <id:%s> built by %s with %s\n", ns_g_srcid,
 599                                ns_g_builder, ns_g_configargs);
 600 #ifdef __clang__
 601                         printf("compiled by CLANG %s\n", __VERSION__);
 602 #else
 603 #if defined(__ICC) || defined(__INTEL_COMPILER)
 604                         printf("compiled by ICC %s\n", __VERSION__);
 605 #else
 606 #ifdef __GNUC__
 607                         printf("compiled by GCC %s\n", __VERSION__);
 608 #endif
 609 #endif
 610 #endif
 611 #ifdef _MSC_VER
 612                         printf("compiled by MSVC %d\n", _MSC_VER);
 613 #endif
 614 #ifdef __SUNPRO_C
 615                         printf("compiled by Solaris Studio %x\n", __SUNPRO_C);
 616 #endif
 617 #ifdef OPENSSL
 618                         printf("compiled with OpenSSL version: %s\n",
 619                                OPENSSL_VERSION_TEXT);
 620 #ifndef WIN32
 621                         printf("linked to OpenSSL version: %s\n",
 622                                SSLeay_version(SSLEAY_VERSION));
 623 #endif
 624 #endif
 625 #ifdef HAVE_LIBXML2
 626                         printf("compiled with libxml2 version: %s\n",
 627                                LIBXML_DOTTED_VERSION);
 628 #ifndef WIN32
 629                         printf("linked to libxml2 version: %s\n",
 630                                xmlParserVersion);
 631 #endif
 632 #endif
 633                         exit(0);
 634                 case 'F':
 635                         /* Reserved for FIPS mode */
 636                         /* FALLTHROUGH */
 637                 case '?':
 638                         usage();
 639                         if (isc_commandline_option == '?')
 640                                 exit(0);
 641                         p = strchr(CMDLINE_FLAGS, isc_commandline_option);
 642                         if (p == NULL || *++p != ':')
 643                                 ns_main_earlyfatal("unknown option '-%c'",
 644                                                    isc_commandline_option);
 645                         else
 646                                 ns_main_earlyfatal("option '-%c' requires "
 647                                                    "an argument",
 648                                                    isc_commandline_option);
 649                         /* FALLTHROUGH */
 650                 default:
 651                         ns_main_earlyfatal("parsing options returned %d", ch);
 652                 }
 653         }
 654
 655         argc -= isc_commandline_index;
 656         argv += isc_commandline_index;
 657         POST(argv);
 658
 659         if (argc > 0) {
 660                 usage();
 661                 ns_main_earlyfatal("extra command line arguments");
 662         }
 663 }
 664
 665 static isc_result_t
 666 create_managers(void) {
 667         isc_result_t result;
 668         unsigned int socks;
 669
 670 #ifdef ISC_PLATFORM_USETHREADS
 671         if (ns_g_cpus == 0)
 672                 ns_g_cpus = ns_g_cpus_detected;
 673         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
 674                       ISC_LOG_INFO, "found %u CPU%s, using %u worker thread%s",
 675                       ns_g_cpus_detected, ns_g_cpus_detected == 1 ? "" : "s",
 676                       ns_g_cpus, ns_g_cpus == 1 ? "" : "s");
 677 #else
 678         ns_g_cpus = 1;
 679 #endif
 680 #ifdef WIN32
 681         ns_g_udpdisp = 1;
 682 #else
 683         if (ns_g_udpdisp == 0) {
 684                 if (ns_g_cpus_detected == 1)
 685                         ns_g_udpdisp = 1;
 686                 else if (ns_g_cpus_detected < 4)
 687                         ns_g_udpdisp = 2;
 688                 else
 689                         ns_g_udpdisp = ns_g_cpus_detected / 2;
 690         }
 691         if (ns_g_udpdisp > ns_g_cpus)
 692                 ns_g_udpdisp = ns_g_cpus;
 693 #endif
 694         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
 695                       ISC_LOG_INFO, "using %u UDP listener%s per interface",
 696                       ns_g_udpdisp, ns_g_udpdisp == 1 ? "" : "s");
 697
 698         result = isc_taskmgr_create(ns_g_mctx, ns_g_cpus, 0, &ns_g_taskmgr);
 699         if (result != ISC_R_SUCCESS) {
 700                 UNEXPECTED_ERROR(__FILE__, __LINE__,
 701                                  "isc_taskmgr_create() failed: %s",
 702                                  isc_result_totext(result));
 703                 return (ISC_R_UNEXPECTED);
 704         }
 705
 706         result = isc_timermgr_create(ns_g_mctx, &ns_g_timermgr);
 707         if (result != ISC_R_SUCCESS) {
 708                 UNEXPECTED_ERROR(__FILE__, __LINE__,
 709                                  "isc_timermgr_create() failed: %s",
 710                                  isc_result_totext(result));
 711                 return (ISC_R_UNEXPECTED);
 712         }
 713
 714         result = isc_socketmgr_create2(ns_g_mctx, &ns_g_socketmgr, maxsocks);
 715         if (result != ISC_R_SUCCESS) {
 716                 UNEXPECTED_ERROR(__FILE__, __LINE__,
 717                                  "isc_socketmgr_create() failed: %s",
 718                                  isc_result_totext(result));
 719                 return (ISC_R_UNEXPECTED);
 720         }
 721         isc__socketmgr_maxudp(ns_g_socketmgr, maxudp);
 722         result = isc_socketmgr_getmaxsockets(ns_g_socketmgr, &socks);
 723         if (result == ISC_R_SUCCESS) {
 724                 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 725                               NS_LOGMODULE_SERVER,
 726                               ISC_LOG_INFO, "using up to %u sockets", socks);
 727         }
 728
 729         result = isc_entropy_create(ns_g_mctx, &ns_g_entropy);
 730         if (result != ISC_R_SUCCESS) {
 731                 UNEXPECTED_ERROR(__FILE__, __LINE__,
 732                                  "isc_entropy_create() failed: %s",
 733                                  isc_result_totext(result));
 734                 return (ISC_R_UNEXPECTED);
 735         }
 736
 737         result = isc_hash_create(ns_g_mctx, ns_g_entropy, DNS_NAME_MAXWIRE);
 738         if (result != ISC_R_SUCCESS) {
 739                 UNEXPECTED_ERROR(__FILE__, __LINE__,
 740                                  "isc_hash_create() failed: %s",
 741                                  isc_result_totext(result));
 742                 return (ISC_R_UNEXPECTED);
 743         }
 744
 745         return (ISC_R_SUCCESS);
 746 }
 747
 748 static void
 749 destroy_managers(void) {
 750         ns_lwresd_shutdown();
 751
 752         isc_entropy_detach(&ns_g_entropy);
 753         if (ns_g_fallbackentropy != NULL)
 754                 isc_entropy_detach(&ns_g_fallbackentropy);
 755
 756         /*
 757          * isc_taskmgr_destroy() will block until all tasks have exited,
 758          */
 759         isc_taskmgr_destroy(&ns_g_taskmgr);
 760         isc_timermgr_destroy(&ns_g_timermgr);
 761         isc_socketmgr_destroy(&ns_g_socketmgr);
 762
 763         /*
 764          * isc_hash_destroy() cannot be called as long as a resolver may be
 765          * running.  Calling this after isc_taskmgr_destroy() ensures the
 766          * call is safe.
 767          */
 768         isc_hash_destroy();
 769 }
 770
 771 static void
 772 dump_symboltable(void) {
 773         int i;
 774         isc_result_t result;
 775         const char *fname;
 776         const void *addr;
 777
 778         if (isc__backtrace_nsymbols == 0)
 779                 return;
 780
 781         if (!isc_log_wouldlog(ns_g_lctx, ISC_LOG_DEBUG(99)))
 782                 return;
 783
 784         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 785                       ISC_LOG_DEBUG(99), "Symbol table:");
 786
 787         for (i = 0, result = ISC_R_SUCCESS; result == ISC_R_SUCCESS; i++) {
 788                 addr = NULL;
 789                 fname = NULL;
 790                 result = isc_backtrace_getsymbolfromindex(i, &addr, &fname);
 791                 if (result == ISC_R_SUCCESS) {
 792                         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 793                                       NS_LOGMODULE_MAIN, ISC_LOG_DEBUG(99),
 794                                       "[%d] %p %s", i, addr, fname);
 795                 }
 796         }
 797 }
 798
 799 static void
 800 setup(void) {
 801         isc_result_t result;
 802         isc_resourcevalue_t old_openfiles;
 803 #ifdef HAVE_LIBSCF
 804         char *instance = NULL;
 805 #endif
 806
 807         /*
 808          * Get the user and group information before changing the root
 809          * directory, so the administrator does not need to keep a copy
 810          * of the user and group databases in the chroot'ed environment.
 811          */
 812         ns_os_inituserinfo(ns_g_username);
 813
 814         /*
 815          * Initialize time conversion information
 816          */
 817         ns_os_tzset();
 818
 819         ns_os_opendevnull();
 820
 821 #ifdef HAVE_LIBSCF
 822         /* Check if named is under smf control, before chroot. */
 823         result = ns_smf_get_instance(&instance, 0, ns_g_mctx);
 824         /* We don't care about instance, just check if we got one. */
 825         if (result == ISC_R_SUCCESS)
 826                 ns_smf_got_instance = 1;
 827         else
 828                 ns_smf_got_instance = 0;
 829         if (instance != NULL)
 830                 isc_mem_free(ns_g_mctx, instance);
 831 #endif /* HAVE_LIBSCF */
 832
 833 #ifdef PATH_RANDOMDEV
 834         /*
 835          * Initialize system's random device as fallback entropy source
 836          * if running chroot'ed.
 837          */
 838         if (ns_g_chrootdir != NULL) {
 839                 result = isc_entropy_create(ns_g_mctx, &ns_g_fallbackentropy);
 840                 if (result != ISC_R_SUCCESS)
 841                         ns_main_earlyfatal("isc_entropy_create() failed: %s",
 842                                            isc_result_totext(result));
 843
 844                 result = isc_entropy_createfilesource(ns_g_fallbackentropy,
 845                                                       PATH_RANDOMDEV);
 846                 if (result != ISC_R_SUCCESS) {
 847                         ns_main_earlywarning("could not open pre-chroot "
 848                                              "entropy source %s: %s",
 849                                              PATH_RANDOMDEV,
 850                                              isc_result_totext(result));
 851                         isc_entropy_detach(&ns_g_fallbackentropy);
 852                 }
 853         }
 854 #endif
 855
 856 #ifdef ISC_PLATFORM_USETHREADS
 857         /*
 858          * Check for the number of cpu's before ns_os_chroot().
 859          */
 860         ns_g_cpus_detected = isc_os_ncpus();
 861 #endif
 862
 863         ns_os_chroot(ns_g_chrootdir);
 864
 865         /*
 866          * For operating systems which have a capability mechanism, now
 867          * is the time to switch to minimal privs and change our user id.
 868          * On traditional UNIX systems, this call will be a no-op, and we
 869          * will change the user ID after reading the config file the first
 870          * time.  (We need to read the config file to know which possibly
 871          * privileged ports to bind() to.)
 872          */
 873         ns_os_minprivs();
 874
 875         result = ns_log_init(ISC_TF(ns_g_username != NULL));
 876         if (result != ISC_R_SUCCESS)
 877                 ns_main_earlyfatal("ns_log_init() failed: %s",
 878                                    isc_result_totext(result));
 879
 880         /*
 881          * Now is the time to daemonize (if we're not running in the
 882          * foreground).  We waited until now because we wanted to get
 883          * a valid logging context setup.  We cannot daemonize any later,
 884          * because calling create_managers() will create threads, which
 885          * would be lost after fork().
 886          */
 887         if (!ns_g_foreground)
 888                 ns_os_daemonize();
 889
 890         /*
 891          * We call isc_app_start() here as some versions of FreeBSD's fork()
 892          * destroys all the signal handling it sets up.
 893          */
 894         result = isc_app_start();
 895         if (result != ISC_R_SUCCESS)
 896                 ns_main_earlyfatal("isc_app_start() failed: %s",
 897                                    isc_result_totext(result));
 898
 899         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 900                       ISC_LOG_NOTICE, "starting %s %s%s", ns_g_product,
 901                       ns_g_version, saved_command_line);
 902
 903         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 904                       ISC_LOG_NOTICE, "built with %s", ns_g_configargs);
 905
 906         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 907                       ISC_LOG_NOTICE,
 908                       "----------------------------------------------------");
 909         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 910                       ISC_LOG_NOTICE,
 911                       "BIND 9 is maintained by Internet Systems Consortium,");
 912         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 913                       ISC_LOG_NOTICE,
 914                       "Inc. (ISC), a non-profit 501(c)(3) public-benefit ");
 915         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 916                       ISC_LOG_NOTICE,
 917                       "corporation.  Support and training for BIND 9 are ");
 918         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 919                       ISC_LOG_NOTICE,
 920                       "available at https://www.isc.org/support");
 921         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 922                       ISC_LOG_NOTICE,
 923                       "----------------------------------------------------");
 924
 925         dump_symboltable();
 926
 927         /*
 928          * Get the initial resource limits.
 929          */
 930         (void)isc_resource_getlimit(isc_resource_stacksize,
 931                                     &ns_g_initstacksize);
 932         (void)isc_resource_getlimit(isc_resource_datasize,
 933                                     &ns_g_initdatasize);
 934         (void)isc_resource_getlimit(isc_resource_coresize,
 935                                     &ns_g_initcoresize);
 936         (void)isc_resource_getlimit(isc_resource_openfiles,
 937                                     &ns_g_initopenfiles);
 938
 939         /*
 940          * System resources cannot effectively be tuned on some systems.
 941          * Raise the limit in such cases for safety.
 942          */
 943         old_openfiles = ns_g_initopenfiles;
 944         ns_os_adjustnofile();
 945         (void)isc_resource_getlimit(isc_resource_openfiles,
 946                                     &ns_g_initopenfiles);
 947         if (old_openfiles != ns_g_initopenfiles) {
 948                 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 949                               NS_LOGMODULE_MAIN, ISC_LOG_NOTICE,
 950                               "adjusted limit on open files from "
 951                               "%" ISC_PRINT_QUADFORMAT "u to "
 952                               "%" ISC_PRINT_QUADFORMAT "u",
 953                               old_openfiles, ns_g_initopenfiles);
 954         }
 955
 956         /*
 957          * If the named configuration filename is relative, prepend the current
 958          * directory's name before possibly changing to another directory.
 959          */
 960         if (! isc_file_isabsolute(ns_g_conffile)) {
 961                 result = isc_file_absolutepath(ns_g_conffile,
 962                                                absolute_conffile,
 963                                                sizeof(absolute_conffile));
 964                 if (result != ISC_R_SUCCESS)
 965                         ns_main_earlyfatal("could not construct absolute path "
 966                                            "of configuration file: %s",
 967                                            isc_result_totext(result));
 968                 ns_g_conffile = absolute_conffile;
 969         }
 970
 971         /*
 972          * Record the server's startup time.
 973          */
 974         result = isc_time_now(&ns_g_boottime);
 975         if (result != ISC_R_SUCCESS)
 976                 ns_main_earlyfatal("isc_time_now() failed: %s",
 977                                    isc_result_totext(result));
 978
 979         result = create_managers();
 980         if (result != ISC_R_SUCCESS)
 981                 ns_main_earlyfatal("create_managers() failed: %s",
 982                                    isc_result_totext(result));
 983
 984         ns_builtin_init();
 985
 986         /*
 987          * Add calls to register sdb drivers here.
 988          */
 989         /* xxdb_init(); */
 990
 991 #ifdef ISC_DLZ_DLOPEN
 992         /*
 993          * Register the DLZ "dlopen" driver.
 994          */
 995         result = dlz_dlopen_init(ns_g_mctx);
 996         if (result != ISC_R_SUCCESS)
 997                 ns_main_earlyfatal("dlz_dlopen_init() failed: %s",
 998                                    isc_result_totext(result));
 999 #endif
1000
1001 #if CONTRIB_DLZ
1002         /*
1003          * Register any other contributed DLZ drivers.
1004          */
1005         result = dlz_drivers_init();
1006         if (result != ISC_R_SUCCESS)
1007                 ns_main_earlyfatal("dlz_drivers_init() failed: %s",
1008                                    isc_result_totext(result));
1009 #endif
1010
1011         ns_server_create(ns_g_mctx, &ns_g_server);
1012 }
1013
1014 static void
1015 cleanup(void) {
1016         destroy_managers();
1017
1018         ns_server_destroy(&ns_g_server);
1019
1020         ns_builtin_deinit();
1021
1022         /*
1023          * Add calls to unregister sdb drivers here.
1024          */
1025         /* xxdb_clear(); */
1026
1027 #ifdef CONTRIB_DLZ
1028         /*
1029          * Unregister contributed DLZ drivers.
1030          */
1031         dlz_drivers_clear();
1032 #endif
1033 #ifdef ISC_DLZ_DLOPEN
1034         /*
1035          * Unregister "dlopen" DLZ driver.
1036          */
1037         dlz_dlopen_clear();
1038 #endif
1039
1040         dns_name_destroy();
1041
1042         isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
1043                       ISC_LOG_NOTICE, "exiting");
1044         ns_log_shutdown();
1045 }
1046
1047 static char *memstats = NULL;
1048
1049 void
1050 ns_main_setmemstats(const char *filename) {
1051         /*
1052          * Caller has to ensure locking.
1053          */
1054
1055         if (memstats != NULL) {
1056                 free(memstats);
1057                 memstats = NULL;
1058         }
1059         if (filename == NULL)
1060                 return;
1061         memstats = malloc(strlen(filename) + 1);
1062         if (memstats)
1063                 strcpy(memstats, filename);
1064 }
1065
1066 #ifdef HAVE_LIBSCF
1067 /*
1068  * Get FMRI for the named process.
1069  */
1070 isc_result_t
1071 ns_smf_get_instance(char **ins_name, int debug, isc_mem_t *mctx) {
1072         scf_handle_t *h = NULL;
1073         int namelen;
1074         char *instance;
1075
1076         REQUIRE(ins_name != NULL && *ins_name == NULL);
1077
1078         if ((h = scf_handle_create(SCF_VERSION)) == NULL) {
1079                 if (debug)
1080                         UNEXPECTED_ERROR(__FILE__, __LINE__,
1081                                          "scf_handle_create() failed: %s",
1082                                          scf_strerror(scf_error()));
1083                 return (ISC_R_FAILURE);
1084         }
1085
1086         if (scf_handle_bind(h) == -1) {
1087                 if (debug)
1088                         UNEXPECTED_ERROR(__FILE__, __LINE__,
1089                                          "scf_handle_bind() failed: %s",
1090                                          scf_strerror(scf_error()));
1091                 scf_handle_destroy(h);
1092                 return (ISC_R_FAILURE);
1093         }
1094
1095         if ((namelen = scf_myname(h, NULL, 0)) == -1) {
1096                 if (debug)
1097                         UNEXPECTED_ERROR(__FILE__, __LINE__,
1098                                          "scf_myname() failed: %s",
1099                                          scf_strerror(scf_error()));
1100                 scf_handle_destroy(h);
1101                 return (ISC_R_FAILURE);
1102         }
1103
1104         if ((instance = isc_mem_allocate(mctx, namelen + 1)) == NULL) {
1105                 UNEXPECTED_ERROR(__FILE__, __LINE__,
1106                                  "ns_smf_get_instance memory "
1107                                  "allocation failed: %s",
1108                                  isc_result_totext(ISC_R_NOMEMORY));
1109                 scf_handle_destroy(h);
1110                 return (ISC_R_FAILURE);
1111         }
1112
1113         if (scf_myname(h, instance, namelen + 1) == -1) {
1114                 if (debug)
1115                         UNEXPECTED_ERROR(__FILE__, __LINE__,
1116                                          "scf_myname() failed: %s",
1117                                          scf_strerror(scf_error()));
1118                 scf_handle_destroy(h);
1119                 isc_mem_free(mctx, instance);
1120                 return (ISC_R_FAILURE);
1121         }
1122
1123         scf_handle_destroy(h);
1124         *ins_name = instance;
1125         return (ISC_R_SUCCESS);
1126 }
1127 #endif /* HAVE_LIBSCF */
1128
1129 /* main entry point, possibly hooked */
1130
1131 int
1132 main(int argc, char *argv[]) {
1133         isc_result_t result;
1134 #ifdef HAVE_LIBSCF
1135         char *instance = NULL;
1136 #endif
1137
1138 #ifdef HAVE_GPERFTOOLS_PROFILER
1139         (void) ProfilerStart(NULL);
1140 #endif
1141
1142         /*
1143          * Record version in core image.
1144          * strings named.core | grep "named version:"
1145          */
1146         strlcat(version,
1147 #if defined(NO_VERSION_DATE) || !defined(__DATE__)
1148                 "named version: BIND " VERSION " <" SRCID ">",
1149 #else
1150                 "named version: BIND " VERSION " <" SRCID "> (" __DATE__ ")",
1151 #endif
1152                 sizeof(version));
1153         result = isc_file_progname(*argv, program_name, sizeof(program_name));
1154         if (result != ISC_R_SUCCESS)
1155                 ns_main_earlyfatal("program name too long");
1156
1157         if (strcmp(program_name, "lwresd") == 0)
1158                 ns_g_lwresdonly = ISC_TRUE;
1159
1160         if (result != ISC_R_SUCCESS)
1161                 ns_main_earlyfatal("failed to build internal symbol table");
1162
1163         isc_assertion_setcallback(assertion_failed);
1164         isc_error_setfatal(library_fatal_error);
1165         isc_error_setunexpected(library_unexpected_error);
1166
1167         ns_os_init(program_name);
1168
1169         dns_result_register();
1170         dst_result_register();
1171         isccc_result_register();
1172
1173         parse_command_line(argc, argv);
1174
1175         /*
1176          * Warn about common configuration error.
1177          */
1178         if (ns_g_chrootdir != NULL) {
1179                 int len = strlen(ns_g_chrootdir);
1180                 if (strncmp(ns_g_chrootdir, ns_g_conffile, len) == 0 &&
1181                     (ns_g_conffile[len] == '/' || ns_g_conffile[len] == '\\'))
1182                         ns_main_earlywarning("config filename (-c %s) contains "
1183                                              "chroot path (-t %s)",
1184                                              ns_g_conffile, ns_g_chrootdir);
1185         }
1186
1187         result = isc_mem_create(0, 0, &ns_g_mctx);
1188         if (result != ISC_R_SUCCESS)
1189                 ns_main_earlyfatal("isc_mem_create() failed: %s",
1190                                    isc_result_totext(result));
1191         isc_mem_setname(ns_g_mctx, "main", NULL);
1192
1193         setup();
1194
1195         /*
1196          * Start things running and then wait for a shutdown request
1197          * or reload.
1198          */
1199         do {
1200                 result = isc_app_run();
1201
1202                 if (result == ISC_R_RELOAD) {
1203                         ns_server_reloadwanted(ns_g_server);
1204                 } else if (result != ISC_R_SUCCESS) {
1205                         UNEXPECTED_ERROR(__FILE__, __LINE__,
1206                                          "isc_app_run(): %s",
1207                                          isc_result_totext(result));
1208                         /*
1209                          * Force exit.
1210                          */
1211                         result = ISC_R_SUCCESS;
1212                 }
1213         } while (result != ISC_R_SUCCESS);
1214
1215 #ifdef HAVE_LIBSCF
1216         if (ns_smf_want_disable == 1) {
1217                 result = ns_smf_get_instance(&instance, 1, ns_g_mctx);
1218                 if (result == ISC_R_SUCCESS && instance != NULL) {
1219                         if (smf_disable_instance(instance, 0) != 0)
1220                                 UNEXPECTED_ERROR(__FILE__, __LINE__,
1221                                                  "smf_disable_instance() "
1222                                                  "failed for %s : %s",
1223                                                  instance,
1224                                                  scf_strerror(scf_error()));
1225                 }
1226                 if (instance != NULL)
1227                         isc_mem_free(ns_g_mctx, instance);
1228         }
1229 #endif /* HAVE_LIBSCF */
1230
1231         cleanup();
1232
1233         if (want_stats) {
1234                 isc_mem_stats(ns_g_mctx, stdout);
1235                 isc_mutex_stats(stdout);
1236         }
1237
1238         if (ns_g_memstatistics && memstats != NULL) {
1239                 FILE *fp = NULL;
1240                 result = isc_stdio_open(memstats, "w", &fp);
1241                 if (result == ISC_R_SUCCESS) {
1242                         isc_mem_stats(ns_g_mctx, fp);
1243                         isc_mutex_stats(fp);
1244                         isc_stdio_close(fp);
1245                 }
1246         }
1247         isc_mem_destroy(&ns_g_mctx);
1248         isc_mem_checkdestroyed(stderr);
1249
1250         ns_main_setmemstats(NULL);
1251
1252         isc_app_finish();
1253
1254         ns_os_closedevnull();
1255
1256         ns_os_shutdown();
1257
1258 #ifdef HAVE_GPERFTOOLS_PROFILER
1259         ProfilerStop();
1260 #endif
1261
1262         return (0);
1263 }