logging.c
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logging.c
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	/*
	* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <crm_internal.h>

	#include <sys/param.h>
	#include <sys/types.h>
	#include <sys/wait.h>
	#include <sys/stat.h>
	#include <sys/utsname.h>

	#include <stdio.h>
	#include <unistd.h>
	#include <string.h>
	#include <stdlib.h>
	#include <limits.h>
	#include <ctype.h>
	#include <pwd.h>
	#include <grp.h>
	#include <time.h>
	#include <libgen.h>
	#include <signal.h>
	#include <bzlib.h>

	#include <qb/qbdefs.h>

	#include <crm/crm.h>
	#include <crm/common/mainloop.h>

	unsigned int crm_log_priority = LOG_NOTICE;
	unsigned int crm_log_level = LOG_INFO;
	static gboolean crm_tracing_enabled(void);
	unsigned int crm_trace_nonlog = 0;
	bool crm_is_daemon = 0;

	GLogFunc glib_log_default;

	static void
	crm_glib_handler(const gchar * log_domain, GLogLevelFlags flags, const gchar * message,
	gpointer user_data)
	{
	int log_level = LOG_WARNING;
	GLogLevelFlags msg_level = (flags & G_LOG_LEVEL_MASK);
	static struct qb_log_callsite *glib_cs = NULL;

	if (glib_cs == NULL) {
	glib_cs = qb_log_callsite_get(__FUNCTION__, __FILE__, "glib-handler", LOG_DEBUG, __LINE__, crm_trace_nonlog);
	}


	switch (msg_level) {
	case G_LOG_LEVEL_CRITICAL:
	log_level = LOG_CRIT;

	if (crm_is_callsite_active(glib_cs, LOG_DEBUG, 0) == FALSE) {
	/* log and record how we got here */
	crm_abort(__FILE__, __FUNCTION__, __LINE__, message, TRUE, TRUE);
	}
	break;

	case G_LOG_LEVEL_ERROR:
	log_level = LOG_ERR;
	break;
	case G_LOG_LEVEL_MESSAGE:
	log_level = LOG_NOTICE;
	break;
	case G_LOG_LEVEL_INFO:
	log_level = LOG_INFO;
	break;
	case G_LOG_LEVEL_DEBUG:
	log_level = LOG_DEBUG;
	break;

	case G_LOG_LEVEL_WARNING:
	case G_LOG_FLAG_RECURSION:
	case G_LOG_FLAG_FATAL:
	case G_LOG_LEVEL_MASK:
	log_level = LOG_WARNING;
	break;
	}

	do_crm_log(log_level, "%s: %s", log_domain, message);
	}

	#ifndef NAME_MAX
	# define NAME_MAX 256
	#endif

	static void
	crm_trigger_blackbox(int nsig)
	{
	if(nsig == SIGTRAP) {
	/* Turn it on if it wasn't already */
	crm_enable_blackbox(nsig);
	}
	crm_write_blackbox(nsig, NULL);
	}

	const char *
	daemon_option(const char *option)
	{
	char env_name[NAME_MAX];
	const char *value = NULL;

	snprintf(env_name, NAME_MAX, "PCMK_%s", option);
	value = getenv(env_name);
	if (value != NULL) {
	crm_trace("Found %s = %s", env_name, value);
	return value;
	}

	snprintf(env_name, NAME_MAX, "HA_%s", option);
	value = getenv(env_name);
	if (value != NULL) {
	crm_trace("Found %s = %s", env_name, value);
	return value;
	}

	crm_trace("Nothing found for %s", option);
	return NULL;
	}

	void
	set_daemon_option(const char option, const char value)
	{
	char env_name[NAME_MAX];

	snprintf(env_name, NAME_MAX, "PCMK_%s", option);
	if (value) {
	crm_trace("Setting %s to %s", env_name, value);
	setenv(env_name, value, 1);
	} else {
	crm_trace("Unsetting %s", env_name);
	unsetenv(env_name);
	}

	snprintf(env_name, NAME_MAX, "HA_%s", option);
	if (value) {
	crm_trace("Setting %s to %s", env_name, value);
	setenv(env_name, value, 1);
	} else {
	crm_trace("Unsetting %s", env_name);
	unsetenv(env_name);
	}
	}

	gboolean
	daemon_option_enabled(const char daemon, const char option)
	{
	const char *value = daemon_option(option);

	if (value != NULL && crm_is_true(value)) {
	return TRUE;

	} else if (value != NULL && strstr(value, daemon)) {
	return TRUE;
	}

	return FALSE;
	}

	void
	crm_log_deinit(void)
	{
	g_log_set_default_handler(glib_log_default, NULL);
	}

	#define FMT_MAX 256
	static void
	set_format_string(int method, const char *daemon)
	{
	int offset = 0;
	char fmt[FMT_MAX];

	if (method > QB_LOG_STDERR) {
	/* When logging to a file */
	struct utsname res;

	if (uname(&res) == 0) {
	offset +=
	snprintf(fmt + offset, FMT_MAX - offset, "%%t [%lu] %s %10s: ",
	(unsigned long) getpid(), res.nodename, daemon);
	} else {
	offset += snprintf(fmt + offset, FMT_MAX - offset, "%%t [%lu] %10s: ",
	(unsigned long) getpid(), daemon);
	}
	}

	if (method == QB_LOG_SYSLOG) {
	offset += snprintf(fmt + offset, FMT_MAX - offset, "%%g %%-7p: %%b");
	crm_extended_logging(method, QB_FALSE);
	} else if (crm_tracing_enabled()) {
	offset += snprintf(fmt + offset, FMT_MAX - offset, "(%%-12f:%%5l %%g) %%-7p: %%n:\t%%b");
	} else {
	offset += snprintf(fmt + offset, FMT_MAX - offset, "%%g %%-7p: %%n:\t%%b");
	}

	CRM_LOG_ASSERT(offset > 0);
	qb_log_format_set(method, fmt);
	}

	gboolean
	crm_add_logfile(const char *filename)
	{
	bool is_default = false;
	static int default_fd = -1;
	static gboolean have_logfile = FALSE;
	const char *default_logfile = CRM_LOG_DIR "/pacemaker.log";

	struct stat parent;
	int fd = 0, rc = 0;
	FILE *logfile = NULL;
	char *parent_dir = NULL;
	char *filename_cp;

	if (filename == NULL && have_logfile == FALSE) {
	filename = default_logfile;
	}

	if (filename == NULL) {
	return FALSE; /* Nothing to do */
	} else if(safe_str_eq(filename, "none")) {
	return FALSE; /* Nothing to do */
	} else if(safe_str_eq(filename, "/dev/null")) {
	return FALSE; /* Nothing to do */
	} else if(safe_str_eq(filename, default_logfile)) {
	is_default = TRUE;
	}

	if(is_default && default_fd >= 0) {
	return TRUE; /* Nothing to do */
	}

	/* Check the parent directory */
	filename_cp = strdup(filename);
	parent_dir = dirname(filename_cp);
	rc = stat(parent_dir, &parent);

	if (rc != 0) {
	crm_err("Directory '%s' does not exist: logging to '%s' is disabled", parent_dir, filename);
	free(filename_cp);
	return FALSE;
	}
	free(filename_cp);

	errno = 0;
	logfile = fopen(filename, "a");
	if(logfile == NULL) {
	crm_err("%s (%d): Logging to '%s' as uid=%u, gid=%u is disabled",
	pcmk_strerror(errno), errno, filename, geteuid(), getegid());
	return FALSE;
	}

	/* Check/Set permissions if we're root */
	if (geteuid() == 0) {
	struct stat st;
	uid_t pcmk_uid = 0;
	gid_t pcmk_gid = 0;
	gboolean fix = FALSE;
	int logfd = fileno(logfile);

	rc = fstat(logfd, &st);
	if (rc < 0) {
	crm_perror(LOG_WARNING, "Cannot stat %s", filename);
	fclose(logfile);
	return FALSE;
	}

	if(crm_user_lookup(CRM_DAEMON_USER, &pcmk_uid, &pcmk_gid) == 0) {
	if (st.st_gid != pcmk_gid) {
	/* Wrong group */
	fix = TRUE;
	} else if ((st.st_mode & S_IRWXG) != (S_IRGRP \| S_IWGRP)) {
	/* Not read/writable by the correct group */
	fix = TRUE;
	}
	}

	if (fix) {
	rc = fchown(logfd, pcmk_uid, pcmk_gid);
	if (rc < 0) {
	crm_warn("Cannot change the ownership of %s to user %s and gid %d",
	filename, CRM_DAEMON_USER, pcmk_gid);
	}

	rc = fchmod(logfd, S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IWGRP);
	if (rc < 0) {
	crm_warn("Cannot change the mode of %s to rw-rw----", filename);
	}

	fprintf(logfile, "Set r/w permissions for uid=%d, gid=%d on %s\n",
	pcmk_uid, pcmk_gid, filename);
	if (fflush(logfile) < 0 \|\| fsync(logfd) < 0) {
	crm_err("Couldn't write out logfile: %s", filename);
	}
	}
	}

	/* Close and reopen with libqb */
	fclose(logfile);
	fd = qb_log_file_open(filename);

	if (fd < 0) {
	crm_perror(LOG_WARNING, "Couldn't send additional logging to %s", filename);
	return FALSE;
	}

	if(is_default) {
	default_fd = fd;

	} else if(default_fd >= 0) {
	crm_notice("Switching to %s", filename);
	qb_log_ctl(default_fd, QB_LOG_CONF_ENABLED, QB_FALSE);
	}

	crm_notice("Additional logging available in %s", filename);
	qb_log_ctl(fd, QB_LOG_CONF_ENABLED, QB_TRUE);
	/* qb_log_ctl(fd, QB_LOG_CONF_FILE_SYNC, 1); Turn on synchronous writes */

	/* Enable callsites */
	crm_update_callsites();
	have_logfile = TRUE;

	return TRUE;
	}

	static int blackbox_trigger = 0;
	static char *blackbox_file_prefix = NULL;

	static void
	blackbox_logger(int32_t t, struct qb_log_callsite cs, time_t timestamp, const char msg)
	{
	if(cs && cs->priority < LOG_ERR) {
	crm_write_blackbox(SIGTRAP, cs); /* Bypass the over-dumping logic */
	} else {
	crm_write_blackbox(0, cs);
	}
	}

	static void
	crm_control_blackbox(int nsig, bool enable)
	{
	int lpc = 0;

	if (blackbox_file_prefix == NULL) {
	pid_t pid = getpid();

	blackbox_file_prefix = crm_strdup_printf("%s/%s-%lu",
	CRM_BLACKBOX_DIR,
	crm_system_name,
	(unsigned long) pid);
	}

	if (enable && qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_STATE_GET, 0) != QB_LOG_STATE_ENABLED) {
	qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_SIZE, 5 * 1024 * 1024); /* Any size change drops existing entries */
	qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_TRUE); /* Setting the size seems to disable it */

	/* Enable synchronous logging */
	for (lpc = QB_LOG_BLACKBOX; lpc < QB_LOG_TARGET_MAX; lpc++) {
	qb_log_ctl(lpc, QB_LOG_CONF_FILE_SYNC, QB_TRUE);
	}

	crm_notice("Initiated blackbox recorder: %s", blackbox_file_prefix);

	/* Save to disk on abnormal termination */
	crm_signal(SIGSEGV, crm_trigger_blackbox);
	crm_signal(SIGABRT, crm_trigger_blackbox);
	crm_signal(SIGILL, crm_trigger_blackbox);
	crm_signal(SIGBUS, crm_trigger_blackbox);
	crm_signal(SIGFPE, crm_trigger_blackbox);

	crm_update_callsites();

	blackbox_trigger = qb_log_custom_open(blackbox_logger, NULL, NULL, NULL);
	qb_log_ctl(blackbox_trigger, QB_LOG_CONF_ENABLED, QB_TRUE);
	crm_trace("Trigger: %d is %d %d", blackbox_trigger,
	qb_log_ctl(blackbox_trigger, QB_LOG_CONF_STATE_GET, 0), QB_LOG_STATE_ENABLED);

	crm_update_callsites();

	} else if (!enable && qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_STATE_GET, 0) == QB_LOG_STATE_ENABLED) {
	qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_FALSE);

	/* Disable synchronous logging again when the blackbox is disabled */
	for (lpc = QB_LOG_BLACKBOX; lpc < QB_LOG_TARGET_MAX; lpc++) {
	qb_log_ctl(lpc, QB_LOG_CONF_FILE_SYNC, QB_FALSE);
	}
	}
	}

	void
	crm_enable_blackbox(int nsig)
	{
	crm_control_blackbox(nsig, TRUE);
	}

	void
	crm_disable_blackbox(int nsig)
	{
	crm_control_blackbox(nsig, FALSE);
	}

	void
	crm_write_blackbox(int nsig, struct qb_log_callsite *cs)
	{
	static int counter = 1;
	static time_t last = 0;

	char buffer[NAME_MAX];
	time_t now = time(NULL);

	if (blackbox_file_prefix == NULL) {
	return;
	}

	switch (nsig) {
	case 0:
	case SIGTRAP:
	/* The graceful case - such as assertion failure or user request */

	if (nsig == 0 && now == last) {
	/* Prevent over-dumping */
	return;
	}

	snprintf(buffer, NAME_MAX, "%s.%d", blackbox_file_prefix, counter++);
	if (nsig == SIGTRAP) {
	crm_notice("Blackbox dump requested, please see %s for contents", buffer);

	} else if (cs) {
	syslog(LOG_NOTICE,
	"Problem detected at %s:%d (%s), please see %s for additional details",
	cs->function, cs->lineno, cs->filename, buffer);
	} else {
	crm_notice("Problem detected, please see %s for additional details", buffer);
	}

	last = now;
	qb_log_blackbox_write_to_file(buffer);

	/* Flush the existing contents
	* A size change would also work
	*/
	qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_FALSE);
	qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_TRUE);
	break;

	default:
	/* Do as little as possible, just try to get what we have out
	* We logged the filename when the blackbox was enabled
	*/
	crm_signal(nsig, SIG_DFL);
	qb_log_blackbox_write_to_file(blackbox_file_prefix);
	qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_FALSE);
	raise(nsig);
	break;
	}
	}

	gboolean
	crm_log_cli_init(const char *entity)
	{
	return crm_log_init(entity, LOG_ERR, FALSE, FALSE, 0, NULL, TRUE);
	}

	static const char *
	crm_quark_to_string(uint32_t tag)
	{
	const char *text = g_quark_to_string(tag);

	if (text) {
	return text;
	}
	return "";
	}

	static void
	crm_log_filter_source(int source, const char trace_files, const char trace_fns,
	const char trace_fmts, const char trace_tags, const char *trace_blackbox,
	struct qb_log_callsite *cs)
	{
	if (qb_log_ctl(source, QB_LOG_CONF_STATE_GET, 0) != QB_LOG_STATE_ENABLED) {
	return;
	} else if (cs->tags != crm_trace_nonlog && source == QB_LOG_BLACKBOX) {
	/* Blackbox gets everything if enabled */
	qb_bit_set(cs->targets, source);

	} else if (source == blackbox_trigger && blackbox_trigger > 0) {
	/* Should this log message result in the blackbox being dumped */
	if (cs->priority <= LOG_ERR) {
	qb_bit_set(cs->targets, source);

	} else if (trace_blackbox) {
	char *key = crm_strdup_printf("%s:%d", cs->function, cs->lineno);

	if (strstr(trace_blackbox, key) != NULL) {
	qb_bit_set(cs->targets, source);
	}
	free(key);
	}

	} else if (source == QB_LOG_SYSLOG) { /* No tracing to syslog */
	if (cs->priority <= crm_log_priority && cs->priority <= crm_log_level) {
	qb_bit_set(cs->targets, source);
	}
	/* Log file tracing options... */
	} else if (cs->priority <= crm_log_level) {
	qb_bit_set(cs->targets, source);
	} else if (trace_files && strstr(trace_files, cs->filename) != NULL) {
	qb_bit_set(cs->targets, source);
	} else if (trace_fns && strstr(trace_fns, cs->function) != NULL) {
	qb_bit_set(cs->targets, source);
	} else if (trace_fmts && strstr(trace_fmts, cs->format) != NULL) {
	qb_bit_set(cs->targets, source);
	} else if (trace_tags
	&& cs->tags != 0
	&& cs->tags != crm_trace_nonlog && g_quark_to_string(cs->tags) != NULL) {
	qb_bit_set(cs->targets, source);
	}
	}

	static void
	crm_log_filter(struct qb_log_callsite *cs)
	{
	int lpc = 0;
	static int need_init = 1;
	static const char *trace_fns = NULL;
	static const char *trace_tags = NULL;
	static const char *trace_fmts = NULL;
	static const char *trace_files = NULL;
	static const char *trace_blackbox = NULL;

	if (need_init) {
	need_init = 0;
	trace_fns = getenv("PCMK_trace_functions");
	trace_fmts = getenv("PCMK_trace_formats");
	trace_tags = getenv("PCMK_trace_tags");
	trace_files = getenv("PCMK_trace_files");
	trace_blackbox = getenv("PCMK_trace_blackbox");

	if (trace_tags != NULL) {
	uint32_t tag;
	char token[500];
	const char *offset = NULL;
	const char *next = trace_tags;

	do {
	offset = next;
	next = strchrnul(offset, ',');
	snprintf(token, sizeof(token), "%.*s", (int)(next - offset), offset);

	tag = g_quark_from_string(token);
	crm_info("Created GQuark %u from token '%s' in '%s'", tag, token, trace_tags);

	if (next[0] != 0) {
	next++;
	}

	} while (next != NULL && next[0] != 0);
	}
	}

	cs->targets = 0; /* Reset then find targets to enable */
	for (lpc = QB_LOG_SYSLOG; lpc < QB_LOG_TARGET_MAX; lpc++) {
	crm_log_filter_source(lpc, trace_files, trace_fns, trace_fmts, trace_tags, trace_blackbox,
	cs);
	}
	}

	gboolean
	crm_is_callsite_active(struct qb_log_callsite *cs, uint8_t level, uint32_t tags)
	{
	gboolean refilter = FALSE;

	if (cs == NULL) {
	return FALSE;
	}

	if (cs->priority != level) {
	cs->priority = level;
	refilter = TRUE;
	}

	if (cs->tags != tags) {
	cs->tags = tags;
	refilter = TRUE;
	}

	if (refilter) {
	crm_log_filter(cs);
	}

	if (cs->targets == 0) {
	return FALSE;
	}
	return TRUE;
	}

	void
	crm_update_callsites(void)
	{
	static gboolean log = TRUE;

	if (log) {
	log = FALSE;
	crm_debug
	("Enabling callsites based on priority=%d, files=%s, functions=%s, formats=%s, tags=%s",
	crm_log_level, getenv("PCMK_trace_files"), getenv("PCMK_trace_functions"),
	getenv("PCMK_trace_formats"), getenv("PCMK_trace_tags"));
	}
	qb_log_filter_fn_set(crm_log_filter);
	}

	static gboolean
	crm_tracing_enabled(void)
	{
	if (crm_log_level >= LOG_TRACE) {
	return TRUE;
	} else if (getenv("PCMK_trace_files") \|\| getenv("PCMK_trace_functions")
	\|\| getenv("PCMK_trace_formats") \|\| getenv("PCMK_trace_tags")) {
	return TRUE;
	}
	return FALSE;
	}

	static int
	crm_priority2int(const char *name)
	{
	struct syslog_names {
	const char *name;
	int priority;
	};
	static struct syslog_names p_names[] = {
	{"emerg", LOG_EMERG},
	{"alert", LOG_ALERT},
	{"crit", LOG_CRIT},
	{"error", LOG_ERR},
	{"warning", LOG_WARNING},
	{"notice", LOG_NOTICE},
	{"info", LOG_INFO},
	{"debug", LOG_DEBUG},
	{NULL, -1}
	};
	int lpc;

	for (lpc = 0; name != NULL && p_names[lpc].name != NULL; lpc++) {
	if (crm_str_eq(p_names[lpc].name, name, TRUE)) {
	return p_names[lpc].priority;
	}
	}
	return crm_log_priority;
	}


	static void
	crm_identity(const char entity, int argc, char *argv)
	{
	if(crm_system_name != NULL) {
	/* Nothing to do */

	} else if (entity) {
	free(crm_system_name);
	crm_system_name = strdup(entity);

	} else if (argc > 0 && argv != NULL) {
	char *mutable = strdup(argv[0]);
	char *modified = basename(mutable);

	if (strstr(modified, "lt-") == modified) {
	modified += 3;
	}

	free(crm_system_name);
	crm_system_name = strdup(modified);
	free(mutable);

	} else if (crm_system_name == NULL) {
	crm_system_name = strdup("Unknown");
	}

	setenv("PCMK_service", crm_system_name, 1);
	}


	void
	crm_log_preinit(const char entity, int argc, char *argv)
	{
	/* Configure libqb logging with nothing turned on */

	int lpc = 0;
	int32_t qb_facility = 0;

	static bool have_logging = FALSE;

	if(have_logging == FALSE) {
	have_logging = TRUE;

	crm_xml_init(); /* Sets buffer allocation strategy */

	if (crm_trace_nonlog == 0) {
	crm_trace_nonlog = g_quark_from_static_string("Pacemaker non-logging tracepoint");
	}

	umask(S_IWGRP \| S_IWOTH \| S_IROTH);

	/* Redirect messages from glib functions to our handler */
	glib_log_default = g_log_set_default_handler(crm_glib_handler, NULL);

	/* and for good measure... - this enum is a bit field (!) */
	g_log_set_always_fatal((GLogLevelFlags) 0); /value out of range /

	/* Who do we log as */
	crm_identity(entity, argc, argv);

	qb_facility = qb_log_facility2int("local0");
	qb_log_init(crm_system_name, qb_facility, LOG_ERR);
	crm_log_level = LOG_CRIT;

	/* Nuke any syslog activity until it's asked for */
	qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_FALSE);

	/* Set format strings and disable threading
	* Pacemaker and threads do not mix well (due to the amount of forking)
	*/
	qb_log_tags_stringify_fn_set(crm_quark_to_string);
	for (lpc = QB_LOG_SYSLOG; lpc < QB_LOG_TARGET_MAX; lpc++) {
	qb_log_ctl(lpc, QB_LOG_CONF_THREADED, QB_FALSE);
	set_format_string(lpc, crm_system_name);
	}
	}
	}

	gboolean
	crm_log_init(const char *entity, uint8_t level, gboolean daemon, gboolean to_stderr,
	int argc, char **argv, gboolean quiet)
	{
	const char *syslog_priority = NULL;
	const char *logfile = daemon_option("logfile");
	const char *facility = daemon_option("logfacility");
	const char *f_copy = facility;

	crm_is_daemon = daemon;
	crm_log_preinit(entity, argc, argv);

	if(level > crm_log_level) {
	crm_log_level = level;
	}

	/* Should we log to syslog */
	if (facility == NULL) {
	if(crm_is_daemon) {
	facility = "daemon";
	} else {
	facility = "none";
	}
	set_daemon_option("logfacility", facility);
	}

	if (safe_str_eq(facility, "none")) {
	quiet = TRUE;


	} else {
	qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_FACILITY, qb_log_facility2int(facility));
	}

	if (daemon_option_enabled(crm_system_name, "debug")) {
	/* Override the default setting */
	crm_log_level = LOG_DEBUG;
	}

	/* What lower threshold do we have for sending to syslog */
	syslog_priority = daemon_option("logpriority");
	if(syslog_priority) {
	int priority = crm_priority2int(syslog_priority);
	crm_log_priority = priority;
	qb_log_filter_ctl(QB_LOG_SYSLOG, QB_LOG_FILTER_ADD, QB_LOG_FILTER_FILE, "*", priority);
	} else {
	qb_log_filter_ctl(QB_LOG_SYSLOG, QB_LOG_FILTER_ADD, QB_LOG_FILTER_FILE, "*", LOG_NOTICE);
	}

	if (!quiet) {
	/* Nuke any syslog activity */
	qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_TRUE);
	}

	/* Should we log to stderr */
	if (daemon_option_enabled(crm_system_name, "stderr")) {
	/* Override the default setting */
	to_stderr = TRUE;
	}
	crm_enable_stderr(to_stderr);

	/* Should we log to a file */
	if (safe_str_eq("none", logfile)) {
	/* No soup^Hlogs for you! */
	} else if(crm_is_daemon) {
	/* The daemons always get a log file, unless explicitly set to configured 'none' */
	crm_add_logfile(logfile);
	} else if(logfile) {
	crm_add_logfile(logfile);
	}

	if (crm_is_daemon && daemon_option_enabled(crm_system_name, "blackbox")) {
	crm_enable_blackbox(0);
	}

	/* Summary */
	crm_trace("Quiet: %d, facility %s", quiet, f_copy);
	daemon_option("logfile");
	daemon_option("logfacility");

	crm_update_callsites();

	/* Ok, now we can start logging... */
	if (quiet == FALSE && crm_is_daemon == FALSE) {
	crm_log_args(argc, argv);
	}

	if (crm_is_daemon) {
	const char *user = getenv("USER");

	if (user != NULL && safe_str_neq(user, "root") && safe_str_neq(user, CRM_DAEMON_USER)) {
	crm_trace("Not switching to corefile directory for %s", user);
	crm_is_daemon = FALSE;
	}
	}

	if (crm_is_daemon) {
	int user = getuid();
	const char *base = CRM_CORE_DIR;
	struct passwd *pwent = getpwuid(user);

	if (pwent == NULL) {
	crm_perror(LOG_ERR, "Cannot get name for uid: %d", user);

	} else if (safe_str_neq(pwent->pw_name, "root")
	&& safe_str_neq(pwent->pw_name, CRM_DAEMON_USER)) {
	crm_trace("Don't change active directory for regular user: %s", pwent->pw_name);

	} else if (chdir(base) < 0) {
	crm_perror(LOG_INFO, "Cannot change active directory to %s", base);

	} else {
	crm_info("Changed active directory to %s", base);
	#if 0
	{
	char path[512];

	snprintf(path, 512, "%s-%lu", crm_system_name, (unsigned long) getpid());
	mkdir(path, 0750);
	chdir(path);
	crm_info("Changed active directory to %s/%s/%s", base, pwent->pw_name, path);
	}
	#endif
	}

	/* Original meanings from signal(7)
	*
	* Signal Value Action Comment
	* SIGTRAP 5 Core Trace/breakpoint trap
	* SIGUSR1 30,10,16 Term User-defined signal 1
	* SIGUSR2 31,12,17 Term User-defined signal 2
	*
	* Our usage is as similar as possible
	*/
	mainloop_add_signal(SIGUSR1, crm_enable_blackbox);
	mainloop_add_signal(SIGUSR2, crm_disable_blackbox);
	mainloop_add_signal(SIGTRAP, crm_trigger_blackbox);
	}

	return TRUE;
	}

	/* returns the old value */
	unsigned int
	set_crm_log_level(unsigned int level)
	{
	unsigned int old = crm_log_level;

	crm_log_level = level;
	crm_update_callsites();
	crm_trace("New log level: %d", level);
	return old;
	}

	void
	crm_enable_stderr(int enable)
	{
	if (enable && qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_STATE_GET, 0) != QB_LOG_STATE_ENABLED) {
	qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE);
	crm_update_callsites();

	} else if (enable == FALSE) {
	qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_FALSE);
	}
	}

	void
	crm_bump_log_level(int argc, char **argv)
	{
	static int args = TRUE;
	int level = crm_log_level;

	if (args && argc > 1) {
	crm_log_args(argc, argv);
	}

	if (qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_STATE_GET, 0) == QB_LOG_STATE_ENABLED) {
	set_crm_log_level(level + 1);
	}

	/* Enable after potentially logging the argstring, not before */
	crm_enable_stderr(TRUE);
	}

	unsigned int
	get_crm_log_level(void)
	{
	return crm_log_level;
	}

	#define ARGS_FMT "Invoked: %s"
	void
	crm_log_args(int argc, char **argv)
	{
	int lpc = 0;
	int len = 0;
	int existing_len = 0;
	int line = __LINE__;
	static int logged = 0;

	char *arg_string = NULL;

	if (argc == 0 \|\| argv == NULL \|\| logged) {
	return;
	}

	logged = 1;

	for (; lpc < argc; lpc++) {
	if (argv[lpc] == NULL) {
	break;
	}

	len = 2 + strlen(argv[lpc]); /* +1 space, +1 EOS */
	arg_string = realloc_safe(arg_string, len + existing_len);
	existing_len += sprintf(arg_string + existing_len, "%s ", argv[lpc]);
	}

	qb_log_from_external_source(__func__, __FILE__, ARGS_FMT, LOG_NOTICE, line, 0, arg_string);

	free(arg_string);
	}

	void
	crm_log_output_fn(const char file, const char function, int line, int level, const char *prefix,
	const char *output)
	{
	const char *next = NULL;
	const char *offset = NULL;

	if (output == NULL) {
	level = LOG_DEBUG;
	output = "-- empty --";
	}

	next = output;
	do {
	offset = next;
	next = strchrnul(offset, '\n');
	do_crm_log_alias(level, file, function, line, "%s [ %.*s ]", prefix,
	(int)(next - offset), offset);
	if (next[0] != 0) {
	next++;
	}

	} while (next != NULL && next[0] != 0);
	}

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