diff options
Diffstat (limited to 'contrib/bind9/bin/named/main.c')
| -rw-r--r-- | contrib/bind9/bin/named/main.c | 1170 |
1 files changed, 0 insertions, 1170 deletions
diff --git a/contrib/bind9/bin/named/main.c b/contrib/bind9/bin/named/main.c deleted file mode 100644 index a546724..0000000 --- a/contrib/bind9/bin/named/main.c +++ /dev/null @@ -1,1170 +0,0 @@ -/* - * Copyright (C) 2004-2013 Internet Systems Consortium, Inc. ("ISC") - * Copyright (C) 1999-2003 Internet Software Consortium. - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH - * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, - * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM - * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE - * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ - -/* $Id$ */ - -/*! \file */ - -#include <config.h> - -#include <ctype.h> -#include <stdlib.h> -#include <string.h> - -#include <isc/app.h> -#include <isc/backtrace.h> -#include <isc/commandline.h> -#include <isc/dir.h> -#include <isc/entropy.h> -#include <isc/file.h> -#include <isc/hash.h> -#include <isc/os.h> -#include <isc/platform.h> -#include <isc/print.h> -#include <isc/resource.h> -#include <isc/stdio.h> -#include <isc/string.h> -#include <isc/task.h> -#include <isc/timer.h> -#include <isc/util.h> - -#include <isccc/result.h> - -#include <dns/dispatch.h> -#include <dns/name.h> -#include <dns/result.h> -#include <dns/view.h> - -#include <dst/result.h> - -#include <dlz/dlz_dlopen_driver.h> - -/* - * Defining NS_MAIN provides storage declarations (rather than extern) - * for variables in named/globals.h. - */ -#define NS_MAIN 1 - -#include <named/builtin.h> -#include <named/control.h> -#include <named/globals.h> /* Explicit, though named/log.h includes it. */ -#include <named/interfacemgr.h> -#include <named/log.h> -#include <named/os.h> -#include <named/server.h> -#include <named/lwresd.h> -#include <named/main.h> -#ifdef HAVE_LIBSCF -#include <named/ns_smf_globals.h> -#endif - -#ifdef OPENSSL -#include <openssl/opensslv.h> -#endif -#ifdef HAVE_LIBXML2 -#include <libxml/xmlversion.h> -#endif -/* - * Include header files for database drivers here. - */ -/* #include "xxdb.h" */ - -#ifdef CONTRIB_DLZ -/* - * Include contributed DLZ drivers if appropriate. - */ -#include <dlz/dlz_drivers.h> -#endif - -/* - * The maximum number of stack frames to dump on assertion failure. - */ -#ifndef BACKTRACE_MAXFRAME -#define BACKTRACE_MAXFRAME 128 -#endif - -static isc_boolean_t want_stats = ISC_FALSE; -static char program_name[ISC_DIR_NAMEMAX] = "named"; -static char absolute_conffile[ISC_DIR_PATHMAX]; -static char saved_command_line[512]; -static char version[512]; -static unsigned int maxsocks = 0; -static int maxudp = 0; - -void -ns_main_earlywarning(const char *format, ...) { - va_list args; - - va_start(args, format); - if (ns_g_lctx != NULL) { - isc_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_WARNING, - format, args); - } else { - fprintf(stderr, "%s: ", program_name); - vfprintf(stderr, format, args); - fprintf(stderr, "\n"); - fflush(stderr); - } - va_end(args); -} - -void -ns_main_earlyfatal(const char *format, ...) { - va_list args; - - va_start(args, format); - if (ns_g_lctx != NULL) { - isc_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL, - format, args); - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL, - "exiting (due to early fatal error)"); - } else { - fprintf(stderr, "%s: ", program_name); - vfprintf(stderr, format, args); - fprintf(stderr, "\n"); - fflush(stderr); - } - va_end(args); - - exit(1); -} - -ISC_PLATFORM_NORETURN_PRE static void -assertion_failed(const char *file, int line, isc_assertiontype_t type, - const char *cond) ISC_PLATFORM_NORETURN_POST; - -static void -assertion_failed(const char *file, int line, isc_assertiontype_t type, - const char *cond) -{ - void *tracebuf[BACKTRACE_MAXFRAME]; - int i, nframes; - isc_result_t result; - const char *logsuffix = ""; - const char *fname; - - /* - * Handle assertion failures. - */ - - if (ns_g_lctx != NULL) { - /* - * Reset the assertion callback in case it is the log - * routines causing the assertion. - */ - isc_assertion_setcallback(NULL); - - result = isc_backtrace_gettrace(tracebuf, BACKTRACE_MAXFRAME, - &nframes); - if (result == ISC_R_SUCCESS && nframes > 0) - logsuffix = ", back trace"; - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL, - "%s:%d: %s(%s) failed%s", file, line, - isc_assertion_typetotext(type), cond, logsuffix); - if (result == ISC_R_SUCCESS) { - for (i = 0; i < nframes; i++) { - unsigned long offset; - - fname = NULL; - result = isc_backtrace_getsymbol(tracebuf[i], - &fname, - &offset); - if (result == ISC_R_SUCCESS) { - isc_log_write(ns_g_lctx, - NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, - ISC_LOG_CRITICAL, - "#%d %p in %s()+0x%lx", i, - tracebuf[i], fname, - offset); - } else { - isc_log_write(ns_g_lctx, - NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, - ISC_LOG_CRITICAL, - "#%d %p in ??", i, - tracebuf[i]); - } - } - } - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL, - "exiting (due to assertion failure)"); - } else { - fprintf(stderr, "%s:%d: %s(%s) failed\n", - file, line, isc_assertion_typetotext(type), cond); - fflush(stderr); - } - - if (ns_g_coreok) - abort(); - exit(1); -} - -ISC_PLATFORM_NORETURN_PRE static void -library_fatal_error(const char *file, int line, const char *format, - va_list args) -ISC_FORMAT_PRINTF(3, 0) ISC_PLATFORM_NORETURN_POST; - -static void -library_fatal_error(const char *file, int line, const char *format, - va_list args) -{ - /* - * Handle isc_error_fatal() calls from our libraries. - */ - - if (ns_g_lctx != NULL) { - /* - * Reset the error callback in case it is the log - * routines causing the assertion. - */ - isc_error_setfatal(NULL); - - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL, - "%s:%d: fatal error:", file, line); - isc_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL, - format, args); - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_CRITICAL, - "exiting (due to fatal error in library)"); - } else { - fprintf(stderr, "%s:%d: fatal error: ", file, line); - vfprintf(stderr, format, args); - fprintf(stderr, "\n"); - fflush(stderr); - } - - if (ns_g_coreok) - abort(); - exit(1); -} - -static void -library_unexpected_error(const char *file, int line, const char *format, - va_list args) ISC_FORMAT_PRINTF(3, 0); - -static void -library_unexpected_error(const char *file, int line, const char *format, - va_list args) -{ - /* - * Handle isc_error_unexpected() calls from our libraries. - */ - - if (ns_g_lctx != NULL) { - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_ERROR, - "%s:%d: unexpected error:", file, line); - isc_log_vwrite(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_ERROR, - format, args); - } else { - fprintf(stderr, "%s:%d: fatal error: ", file, line); - vfprintf(stderr, format, args); - fprintf(stderr, "\n"); - fflush(stderr); - } -} - -static void -lwresd_usage(void) { - fprintf(stderr, - "usage: lwresd [-4|-6] [-c conffile | -C resolvconffile] " - "[-d debuglevel]\n" - " [-f|-g] [-n number_of_cpus] [-p port] " - "[-P listen-port] [-s]\n" - " [-t chrootdir] [-u username] [-i pidfile]\n" - " [-m {usage|trace|record|size|mctx}]\n"); -} - -static void -usage(void) { - if (ns_g_lwresdonly) { - lwresd_usage(); - return; - } - fprintf(stderr, - "usage: named [-4|-6] [-c conffile] [-d debuglevel] " - "[-E engine] [-f|-g]\n" - " [-n number_of_cpus] [-p port] [-s] " - "[-t chrootdir] [-u username]\n" - " [-m {usage|trace|record|size|mctx}]\n"); -} - -static void -save_command_line(int argc, char *argv[]) { - int i; - char *src; - char *dst; - char *eob; - const char truncated[] = "..."; - isc_boolean_t quoted = ISC_FALSE; - - dst = saved_command_line; - eob = saved_command_line + sizeof(saved_command_line); - - for (i = 1; i < argc && dst < eob; i++) { - *dst++ = ' '; - - src = argv[i]; - while (*src != '\0' && dst < eob) { - /* - * This won't perfectly produce a shell-independent - * pastable command line in all circumstances, but - * comes close, and for practical purposes will - * nearly always be fine. - */ - if (quoted || isalnum(*src & 0xff) || - *src == '-' || *src == '_' || - *src == '.' || *src == '/') { - *dst++ = *src++; - quoted = ISC_FALSE; - } else { - *dst++ = '\\'; - quoted = ISC_TRUE; - } - } - } - - INSIST(sizeof(saved_command_line) >= sizeof(truncated)); - - if (dst == eob) - strcpy(eob - sizeof(truncated), truncated); - else - *dst = '\0'; -} - -static int -parse_int(char *arg, const char *desc) { - char *endp; - int tmp; - long int ltmp; - - ltmp = strtol(arg, &endp, 10); - tmp = (int) ltmp; - if (*endp != '\0') - ns_main_earlyfatal("%s '%s' must be numeric", desc, arg); - if (tmp < 0 || tmp != ltmp) - ns_main_earlyfatal("%s '%s' out of range", desc, arg); - return (tmp); -} - -static struct flag_def { - const char *name; - unsigned int value; -} mem_debug_flags[] = { - { "trace", ISC_MEM_DEBUGTRACE }, - { "record", ISC_MEM_DEBUGRECORD }, - { "usage", ISC_MEM_DEBUGUSAGE }, - { "size", ISC_MEM_DEBUGSIZE }, - { "mctx", ISC_MEM_DEBUGCTX }, - { NULL, 0 } -}; - -static void -set_flags(const char *arg, struct flag_def *defs, unsigned int *ret) { - for (;;) { - const struct flag_def *def; - const char *end = strchr(arg, ','); - int arglen; - if (end == NULL) - end = arg + strlen(arg); - arglen = end - arg; - for (def = defs; def->name != NULL; def++) { - if (arglen == (int)strlen(def->name) && - memcmp(arg, def->name, arglen) == 0) { - *ret |= def->value; - goto found; - } - } - ns_main_earlyfatal("unrecognized flag '%.*s'", arglen, arg); - found: - if (*end == '\0') - break; - arg = end + 1; - } -} - -static void -parse_command_line(int argc, char *argv[]) { - int ch; - int port; - isc_boolean_t disable6 = ISC_FALSE; - isc_boolean_t disable4 = ISC_FALSE; - - save_command_line(argc, argv); - - isc_commandline_errprint = ISC_FALSE; - while ((ch = isc_commandline_parse(argc, argv, - "46c:C:d:E:fFgi:lm:n:N:p:P:" - "sS:t:T:U:u:vVx:")) != -1) { - switch (ch) { - case '4': - if (disable4) - ns_main_earlyfatal("cannot specify -4 and -6"); - if (isc_net_probeipv4() != ISC_R_SUCCESS) - ns_main_earlyfatal("IPv4 not supported by OS"); - isc_net_disableipv6(); - disable6 = ISC_TRUE; - break; - case '6': - if (disable6) - ns_main_earlyfatal("cannot specify -4 and -6"); - if (isc_net_probeipv6() != ISC_R_SUCCESS) - ns_main_earlyfatal("IPv6 not supported by OS"); - isc_net_disableipv4(); - disable4 = ISC_TRUE; - break; - case 'c': - ns_g_conffile = isc_commandline_argument; - lwresd_g_conffile = isc_commandline_argument; - if (lwresd_g_useresolvconf) - ns_main_earlyfatal("cannot specify -c and -C"); - ns_g_conffileset = ISC_TRUE; - break; - case 'C': - lwresd_g_resolvconffile = isc_commandline_argument; - if (ns_g_conffileset) - ns_main_earlyfatal("cannot specify -c and -C"); - lwresd_g_useresolvconf = ISC_TRUE; - break; - case 'd': - ns_g_debuglevel = parse_int(isc_commandline_argument, - "debug level"); - break; - case 'E': - ns_g_engine = isc_commandline_argument; - break; - case 'f': - ns_g_foreground = ISC_TRUE; - break; - case 'g': - ns_g_foreground = ISC_TRUE; - ns_g_logstderr = ISC_TRUE; - break; - /* XXXBEW -i should be removed */ - case 'i': - lwresd_g_defaultpidfile = isc_commandline_argument; - break; - case 'l': - ns_g_lwresdonly = ISC_TRUE; - break; - case 'm': - set_flags(isc_commandline_argument, mem_debug_flags, - &isc_mem_debugging); - break; - case 'N': /* Deprecated. */ - case 'n': - ns_g_cpus = parse_int(isc_commandline_argument, - "number of cpus"); - if (ns_g_cpus == 0) - ns_g_cpus = 1; - break; - case 'p': - port = parse_int(isc_commandline_argument, "port"); - if (port < 1 || port > 65535) - ns_main_earlyfatal("port '%s' out of range", - isc_commandline_argument); - ns_g_port = port; - break; - /* XXXBEW Should -P be removed? */ - case 'P': - port = parse_int(isc_commandline_argument, "port"); - if (port < 1 || port > 65535) - ns_main_earlyfatal("port '%s' out of range", - isc_commandline_argument); - lwresd_g_listenport = port; - break; - case 's': - /* XXXRTH temporary syntax */ - want_stats = ISC_TRUE; - break; - case 'S': - maxsocks = parse_int(isc_commandline_argument, - "max number of sockets"); - break; - case 't': - /* XXXJAB should we make a copy? */ - ns_g_chrootdir = isc_commandline_argument; - break; - case 'T': /* NOT DOCUMENTED */ - /* - * clienttest: make clients single shot with their - * own memory context. - */ - if (!strcmp(isc_commandline_argument, "clienttest")) - ns_g_clienttest = ISC_TRUE; - else if (!strcmp(isc_commandline_argument, "nosoa")) - ns_g_nosoa = ISC_TRUE; - else if (!strcmp(isc_commandline_argument, "noaa")) - ns_g_noaa = ISC_TRUE; - else if (!strcmp(isc_commandline_argument, "maxudp512")) - maxudp = 512; - else if (!strcmp(isc_commandline_argument, "maxudp1460")) - maxudp = 1460; - else if (!strcmp(isc_commandline_argument, "nosyslog")) - ns_g_nosyslog = ISC_TRUE; - else if (!strcmp(isc_commandline_argument, "nonearest")) - ns_g_nonearest = ISC_TRUE; - else - fprintf(stderr, "unknown -T flag '%s\n", - isc_commandline_argument); - break; - case 'U': - ns_g_udpdisp = parse_int(isc_commandline_argument, - "number of UDP listeners " - "per interface"); - break; - case 'u': - ns_g_username = isc_commandline_argument; - break; - case 'v': - printf("%s %s", ns_g_product, ns_g_version); - if (*ns_g_description != 0) - printf(" %s", ns_g_description); - printf("\n"); - exit(0); - case 'V': - printf("%s %s", ns_g_product, ns_g_version); - if (*ns_g_description != 0) - printf(" %s", ns_g_description); - printf(" <id:%s> built with %s\n", ns_g_srcid, - ns_g_configargs); -#ifdef OPENSSL - printf("using OpenSSL version: %s\n", - OPENSSL_VERSION_TEXT); -#endif -#ifdef HAVE_LIBXML2 - printf("using libxml2 version: %s\n", - LIBXML_DOTTED_VERSION); -#endif - exit(0); - case 'F': - /* Reserved for FIPS mode */ - /* FALLTHROUGH */ - case '?': - usage(); - if (isc_commandline_option == '?') - exit(0); - ns_main_earlyfatal("unknown option '-%c'", - isc_commandline_option); - /* FALLTHROUGH */ - default: - ns_main_earlyfatal("parsing options returned %d", ch); - } - } - - argc -= isc_commandline_index; - argv += isc_commandline_index; - POST(argv); - - if (argc > 0) { - usage(); - ns_main_earlyfatal("extra command line arguments"); - } -} - -static isc_result_t -create_managers(void) { - isc_result_t result; - unsigned int socks; - -#ifdef ISC_PLATFORM_USETHREADS - if (ns_g_cpus == 0) - ns_g_cpus = ns_g_cpus_detected; - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER, - ISC_LOG_INFO, "found %u CPU%s, using %u worker thread%s", - ns_g_cpus_detected, ns_g_cpus_detected == 1 ? "" : "s", - ns_g_cpus, ns_g_cpus == 1 ? "" : "s"); -#else - ns_g_cpus = 1; -#endif -#ifdef WIN32 - ns_g_udpdisp = 1; -#else - if (ns_g_udpdisp == 0) - ns_g_udpdisp = ns_g_cpus_detected; - if (ns_g_udpdisp > ns_g_cpus) - ns_g_udpdisp = ns_g_cpus; -#endif - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER, - ISC_LOG_INFO, "using %u UDP listener%s per interface", - ns_g_udpdisp, ns_g_udpdisp == 1 ? "" : "s"); - - result = isc_taskmgr_create(ns_g_mctx, ns_g_cpus, 0, &ns_g_taskmgr); - if (result != ISC_R_SUCCESS) { - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_taskmgr_create() failed: %s", - isc_result_totext(result)); - return (ISC_R_UNEXPECTED); - } - - result = isc_timermgr_create(ns_g_mctx, &ns_g_timermgr); - if (result != ISC_R_SUCCESS) { - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_timermgr_create() failed: %s", - isc_result_totext(result)); - return (ISC_R_UNEXPECTED); - } - - result = isc_socketmgr_create2(ns_g_mctx, &ns_g_socketmgr, maxsocks); - if (result != ISC_R_SUCCESS) { - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_socketmgr_create() failed: %s", - isc_result_totext(result)); - return (ISC_R_UNEXPECTED); - } - isc__socketmgr_maxudp(ns_g_socketmgr, maxudp); - result = isc_socketmgr_getmaxsockets(ns_g_socketmgr, &socks); - if (result == ISC_R_SUCCESS) { - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_SERVER, - ISC_LOG_INFO, "using up to %u sockets", socks); - } - - result = isc_entropy_create(ns_g_mctx, &ns_g_entropy); - if (result != ISC_R_SUCCESS) { - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_entropy_create() failed: %s", - isc_result_totext(result)); - return (ISC_R_UNEXPECTED); - } - - result = isc_hash_create(ns_g_mctx, ns_g_entropy, DNS_NAME_MAXWIRE); - if (result != ISC_R_SUCCESS) { - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_hash_create() failed: %s", - isc_result_totext(result)); - return (ISC_R_UNEXPECTED); - } - - return (ISC_R_SUCCESS); -} - -static void -destroy_managers(void) { - ns_lwresd_shutdown(); - - isc_entropy_detach(&ns_g_entropy); - if (ns_g_fallbackentropy != NULL) - isc_entropy_detach(&ns_g_fallbackentropy); - - /* - * isc_taskmgr_destroy() will block until all tasks have exited, - */ - isc_taskmgr_destroy(&ns_g_taskmgr); - isc_timermgr_destroy(&ns_g_timermgr); - isc_socketmgr_destroy(&ns_g_socketmgr); - - /* - * isc_hash_destroy() cannot be called as long as a resolver may be - * running. Calling this after isc_taskmgr_destroy() ensures the - * call is safe. - */ - isc_hash_destroy(); -} - -static void -dump_symboltable() { - int i; - isc_result_t result; - const char *fname; - const void *addr; - - if (isc__backtrace_nsymbols == 0) - return; - - if (!isc_log_wouldlog(ns_g_lctx, ISC_LOG_DEBUG(99))) - return; - - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_DEBUG(99), "Symbol table:"); - - for (i = 0, result = ISC_R_SUCCESS; result == ISC_R_SUCCESS; i++) { - addr = NULL; - fname = NULL; - result = isc_backtrace_getsymbolfromindex(i, &addr, &fname); - if (result == ISC_R_SUCCESS) { - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_DEBUG(99), - "[%d] %p %s", i, addr, fname); - } - } -} - -static void -setup(void) { - isc_result_t result; - isc_resourcevalue_t old_openfiles; -#ifdef HAVE_LIBSCF - char *instance = NULL; -#endif - - /* - * Get the user and group information before changing the root - * directory, so the administrator does not need to keep a copy - * of the user and group databases in the chroot'ed environment. - */ - ns_os_inituserinfo(ns_g_username); - - /* - * Initialize time conversion information - */ - ns_os_tzset(); - - ns_os_opendevnull(); - -#ifdef HAVE_LIBSCF - /* Check if named is under smf control, before chroot. */ - result = ns_smf_get_instance(&instance, 0, ns_g_mctx); - /* We don't care about instance, just check if we got one. */ - if (result == ISC_R_SUCCESS) - ns_smf_got_instance = 1; - else - ns_smf_got_instance = 0; - if (instance != NULL) - isc_mem_free(ns_g_mctx, instance); -#endif /* HAVE_LIBSCF */ - -#ifdef PATH_RANDOMDEV - /* - * Initialize system's random device as fallback entropy source - * if running chroot'ed. - */ - if (ns_g_chrootdir != NULL) { - result = isc_entropy_create(ns_g_mctx, &ns_g_fallbackentropy); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("isc_entropy_create() failed: %s", - isc_result_totext(result)); - - result = isc_entropy_createfilesource(ns_g_fallbackentropy, - PATH_RANDOMDEV); - if (result != ISC_R_SUCCESS) { - ns_main_earlywarning("could not open pre-chroot " - "entropy source %s: %s", - PATH_RANDOMDEV, - isc_result_totext(result)); - isc_entropy_detach(&ns_g_fallbackentropy); - } - } -#endif - -#ifdef ISC_PLATFORM_USETHREADS - /* - * Check for the number of cpu's before ns_os_chroot(). - */ - ns_g_cpus_detected = isc_os_ncpus(); -#endif - - ns_os_chroot(ns_g_chrootdir); - - /* - * For operating systems which have a capability mechanism, now - * is the time to switch to minimal privs and change our user id. - * On traditional UNIX systems, this call will be a no-op, and we - * will change the user ID after reading the config file the first - * time. (We need to read the config file to know which possibly - * privileged ports to bind() to.) - */ - ns_os_minprivs(); - - result = ns_log_init(ISC_TF(ns_g_username != NULL)); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("ns_log_init() failed: %s", - isc_result_totext(result)); - - /* - * Now is the time to daemonize (if we're not running in the - * foreground). We waited until now because we wanted to get - * a valid logging context setup. We cannot daemonize any later, - * because calling create_managers() will create threads, which - * would be lost after fork(). - */ - if (!ns_g_foreground) - ns_os_daemonize(); - - /* - * We call isc_app_start() here as some versions of FreeBSD's fork() - * destroys all the signal handling it sets up. - */ - result = isc_app_start(); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("isc_app_start() failed: %s", - isc_result_totext(result)); - - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, "starting %s %s%s", ns_g_product, - ns_g_version, saved_command_line); - - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, "built with %s", ns_g_configargs); - - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, - "----------------------------------------------------"); - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, - "BIND 9 is maintained by Internet Systems Consortium,"); - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, - "Inc. (ISC), a non-profit 501(c)(3) public-benefit "); - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, - "corporation. Support and training for BIND 9 are "); - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, - "available at https://www.isc.org/support"); - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, - "----------------------------------------------------"); - - dump_symboltable(); - - /* - * Get the initial resource limits. - */ - (void)isc_resource_getlimit(isc_resource_stacksize, - &ns_g_initstacksize); - (void)isc_resource_getlimit(isc_resource_datasize, - &ns_g_initdatasize); - (void)isc_resource_getlimit(isc_resource_coresize, - &ns_g_initcoresize); - (void)isc_resource_getlimit(isc_resource_openfiles, - &ns_g_initopenfiles); - - /* - * System resources cannot effectively be tuned on some systems. - * Raise the limit in such cases for safety. - */ - old_openfiles = ns_g_initopenfiles; - ns_os_adjustnofile(); - (void)isc_resource_getlimit(isc_resource_openfiles, - &ns_g_initopenfiles); - if (old_openfiles != ns_g_initopenfiles) { - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, - NS_LOGMODULE_MAIN, ISC_LOG_NOTICE, - "adjusted limit on open files from " - "%" ISC_PRINT_QUADFORMAT "u to " - "%" ISC_PRINT_QUADFORMAT "u", - old_openfiles, ns_g_initopenfiles); - } - - /* - * If the named configuration filename is relative, prepend the current - * directory's name before possibly changing to another directory. - */ - if (! isc_file_isabsolute(ns_g_conffile)) { - result = isc_file_absolutepath(ns_g_conffile, - absolute_conffile, - sizeof(absolute_conffile)); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("could not construct absolute path " - "of configuration file: %s", - isc_result_totext(result)); - ns_g_conffile = absolute_conffile; - } - - /* - * Record the server's startup time. - */ - result = isc_time_now(&ns_g_boottime); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("isc_time_now() failed: %s", - isc_result_totext(result)); - - result = create_managers(); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("create_managers() failed: %s", - isc_result_totext(result)); - - ns_builtin_init(); - - /* - * Add calls to register sdb drivers here. - */ - /* xxdb_init(); */ - -#ifdef ISC_DLZ_DLOPEN - /* - * Register the DLZ "dlopen" driver. - */ - result = dlz_dlopen_init(ns_g_mctx); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("dlz_dlopen_init() failed: %s", - isc_result_totext(result)); -#endif - -#if CONTRIB_DLZ - /* - * Register any other contributed DLZ drivers. - */ - result = dlz_drivers_init(); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("dlz_drivers_init() failed: %s", - isc_result_totext(result)); -#endif - - ns_server_create(ns_g_mctx, &ns_g_server); -} - -static void -cleanup(void) { - destroy_managers(); - - ns_server_destroy(&ns_g_server); - - ns_builtin_deinit(); - - /* - * Add calls to unregister sdb drivers here. - */ - /* xxdb_clear(); */ - -#ifdef CONTRIB_DLZ - /* - * Unregister contributed DLZ drivers. - */ - dlz_drivers_clear(); -#endif -#ifdef ISC_DLZ_DLOPEN - /* - * Unregister "dlopen" DLZ driver. - */ - dlz_dlopen_clear(); -#endif - - dns_name_destroy(); - - isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN, - ISC_LOG_NOTICE, "exiting"); - ns_log_shutdown(); -} - -static char *memstats = NULL; - -void -ns_main_setmemstats(const char *filename) { - /* - * Caller has to ensure locking. - */ - - if (memstats != NULL) { - free(memstats); - memstats = NULL; - } - if (filename == NULL) - return; - memstats = malloc(strlen(filename) + 1); - if (memstats) - strcpy(memstats, filename); -} - -#ifdef HAVE_LIBSCF -/* - * Get FMRI for the named process. - */ -isc_result_t -ns_smf_get_instance(char **ins_name, int debug, isc_mem_t *mctx) { - scf_handle_t *h = NULL; - int namelen; - char *instance; - - REQUIRE(ins_name != NULL && *ins_name == NULL); - - if ((h = scf_handle_create(SCF_VERSION)) == NULL) { - if (debug) - UNEXPECTED_ERROR(__FILE__, __LINE__, - "scf_handle_create() failed: %s", - scf_strerror(scf_error())); - return (ISC_R_FAILURE); - } - - if (scf_handle_bind(h) == -1) { - if (debug) - UNEXPECTED_ERROR(__FILE__, __LINE__, - "scf_handle_bind() failed: %s", - scf_strerror(scf_error())); - scf_handle_destroy(h); - return (ISC_R_FAILURE); - } - - if ((namelen = scf_myname(h, NULL, 0)) == -1) { - if (debug) - UNEXPECTED_ERROR(__FILE__, __LINE__, - "scf_myname() failed: %s", - scf_strerror(scf_error())); - scf_handle_destroy(h); - return (ISC_R_FAILURE); - } - - if ((instance = isc_mem_allocate(mctx, namelen + 1)) == NULL) { - UNEXPECTED_ERROR(__FILE__, __LINE__, - "ns_smf_get_instance memory " - "allocation failed: %s", - isc_result_totext(ISC_R_NOMEMORY)); - scf_handle_destroy(h); - return (ISC_R_FAILURE); - } - - if (scf_myname(h, instance, namelen + 1) == -1) { - if (debug) - UNEXPECTED_ERROR(__FILE__, __LINE__, - "scf_myname() failed: %s", - scf_strerror(scf_error())); - scf_handle_destroy(h); - isc_mem_free(mctx, instance); - return (ISC_R_FAILURE); - } - - scf_handle_destroy(h); - *ins_name = instance; - return (ISC_R_SUCCESS); -} -#endif /* HAVE_LIBSCF */ - -int -main(int argc, char *argv[]) { - isc_result_t result; -#ifdef HAVE_LIBSCF - char *instance = NULL; -#endif - - /* - * Record version in core image. - * strings named.core | grep "named version:" - */ - strlcat(version, -#if defined(NO_VERSION_DATE) || !defined(__DATE__) - "named version: BIND " VERSION " <" SRCID ">", -#else - "named version: BIND " VERSION " <" SRCID "> (" __DATE__ ")", -#endif - sizeof(version)); - result = isc_file_progname(*argv, program_name, sizeof(program_name)); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("program name too long"); - - if (strcmp(program_name, "lwresd") == 0) - ns_g_lwresdonly = ISC_TRUE; - - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("failed to build internal symbol table"); - - isc_assertion_setcallback(assertion_failed); - isc_error_setfatal(library_fatal_error); - isc_error_setunexpected(library_unexpected_error); - - ns_os_init(program_name); - - dns_result_register(); - dst_result_register(); - isccc_result_register(); - - parse_command_line(argc, argv); - - /* - * Warn about common configuration error. - */ - if (ns_g_chrootdir != NULL) { - int len = strlen(ns_g_chrootdir); - if (strncmp(ns_g_chrootdir, ns_g_conffile, len) == 0 && - (ns_g_conffile[len] == '/' || ns_g_conffile[len] == '\\')) - ns_main_earlywarning("config filename (-c %s) contains " - "chroot path (-t %s)", - ns_g_conffile, ns_g_chrootdir); - } - - result = isc_mem_create(0, 0, &ns_g_mctx); - if (result != ISC_R_SUCCESS) - ns_main_earlyfatal("isc_mem_create() failed: %s", - isc_result_totext(result)); - isc_mem_setname(ns_g_mctx, "main", NULL); - - setup(); - - /* - * Start things running and then wait for a shutdown request - * or reload. - */ - do { - result = isc_app_run(); - - if (result == ISC_R_RELOAD) { - ns_server_reloadwanted(ns_g_server); - } else if (result != ISC_R_SUCCESS) { - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_app_run(): %s", - isc_result_totext(result)); - /* - * Force exit. - */ - result = ISC_R_SUCCESS; - } - } while (result != ISC_R_SUCCESS); - -#ifdef HAVE_LIBSCF - if (ns_smf_want_disable == 1) { - result = ns_smf_get_instance(&instance, 1, ns_g_mctx); - if (result == ISC_R_SUCCESS && instance != NULL) { - if (smf_disable_instance(instance, 0) != 0) - UNEXPECTED_ERROR(__FILE__, __LINE__, - "smf_disable_instance() " - "failed for %s : %s", - instance, - scf_strerror(scf_error())); - } - if (instance != NULL) - isc_mem_free(ns_g_mctx, instance); - } -#endif /* HAVE_LIBSCF */ - - cleanup(); - - if (want_stats) { - isc_mem_stats(ns_g_mctx, stdout); - isc_mutex_stats(stdout); - } - - if (ns_g_memstatistics && memstats != NULL) { - FILE *fp = NULL; - result = isc_stdio_open(memstats, "w", &fp); - if (result == ISC_R_SUCCESS) { - isc_mem_stats(ns_g_mctx, fp); - isc_mutex_stats(fp); - isc_stdio_close(fp); - } - } - isc_mem_destroy(&ns_g_mctx); - isc_mem_checkdestroyed(stderr); - - ns_main_setmemstats(NULL); - - isc_app_finish(); - - ns_os_closedevnull(); - - ns_os_shutdown(); - - return (0); -} |
