[apple/syslog.git] / libsystem_asl.tproj / src / syslog.c

/*
 * Copyright (c) 1999-2015 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

/*
 * Copyright (c) 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <stdio.h>

#include <sys/syslog.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <pthread.h>
#include <dispatch/dispatch.h>
#include <asl.h>
#include <asl_msg.h>
#include <asl_private.h>
#include <os/log.h>
#include <os/log_private.h>

#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif

#define	LOG_NO_NOTIFY	0x1000
extern const char *asl_syslog_faciliy_num_to_name(int n);

#ifdef BUILDING_VARIANT
__private_extern__ pthread_mutex_t _sl_lock;
__private_extern__ asl_object_t _sl_asl;
__private_extern__ char *_sl_ident;
__private_extern__ int _sl_fac;
__private_extern__ int _sl_opts;
__private_extern__ int _sl_mask;
#else /* !BUILDING_VARIANT */
__private_extern__ pthread_mutex_t _sl_lock = PTHREAD_MUTEX_INITIALIZER;
__private_extern__ asl_object_t _sl_asl = NULL;
__private_extern__ char *_sl_ident = NULL;
__private_extern__ int _sl_fac = 0;
__private_extern__ int _sl_opts = 0;
__private_extern__ int _sl_mask = 0;
#endif /* BUILDING_VARIANT */

#define EVAL_ASL (EVAL_SEND_ASL | EVAL_TEXT_FILE | EVAL_ASL_FILE)

static const os_log_type_t shim_syslog_to_log_type[8] = {
	OS_LOG_TYPE_DEFAULT,    // LOG_EMERG
	OS_LOG_TYPE_DEFAULT,    // LOG_ALERT
	OS_LOG_TYPE_DEFAULT,    // LOG_CRIT
	OS_LOG_TYPE_DEFAULT,    // LOG_ERR
	OS_LOG_TYPE_DEFAULT,    // LOG_WARNING
	OS_LOG_TYPE_DEFAULT,    // LOG_NOTICE
	OS_LOG_TYPE_INFO,       // LOG_INFO
	OS_LOG_TYPE_DEBUG       // LOG_DEBUG
};

extern uint32_t _asl_evaluate_send(asl_object_t client, asl_object_t m, int slevel);
extern uint32_t _asl_lib_vlog(asl_object_t obj, uint32_t eval, asl_object_t msg, const char *format, va_list ap);
extern uint32_t _asl_lib_vlog_text(asl_object_t obj, uint32_t eval, asl_object_t msg, const char *format, va_list ap);


/* SHIM SPI */
asl_object_t
_syslog_asl_client()
{
	pthread_mutex_lock(&_sl_lock);
	if (_sl_asl == NULL)
	{
		_sl_asl = asl_open(NULL, NULL, ASL_OPT_SYSLOG_LEGACY);
		_sl_mask = ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG);
		asl_set_filter(_sl_asl, _sl_mask);
	}
	pthread_mutex_unlock(&_sl_lock);

	return _sl_asl;
}

/*
 * syslog, vsyslog --
 *	print message on log file; output is intended for syslogd(8).
 */

void
vsyslog(int pri, const char *fmt, va_list ap)
{
	int level = pri & LOG_PRIMASK;
	int fac = pri & LOG_FACMASK;
	uint32_t eval;
	void *addr;

	_syslog_asl_client();

	eval = _asl_evaluate_send(_sl_asl, NULL, level);

	/* don't send install messages to Activity Tracing */
	if (fac == LOG_INSTALL || (fac == 0 && _sl_fac == LOG_INSTALL)) {
		eval &= ~EVAL_SEND_TRACE;
	}

	addr = __builtin_return_address(0);

	if ((eval & EVAL_SEND_TRACE) && os_log_shim_enabled(addr))
	{
		va_list ap_copy;
		os_log_type_t type = shim_syslog_to_log_type[level];

		va_copy(ap_copy, ap);
		os_log_with_args(OS_LOG_DEFAULT, type, fmt, ap_copy, addr);
		va_end(ap_copy);

		if (eval & EVAL_TEXT_FILE)
		{
			asl_object_t msg = asl_new(ASL_TYPE_MSG);
			const char *facility;

			if (fac != 0)
			{
				facility = asl_syslog_faciliy_num_to_name(fac);
				if (facility != NULL) asl_set(msg, ASL_KEY_FACILITY, facility);
			}

			_asl_lib_vlog_text(_sl_asl, eval, msg, fmt, ap);

			asl_release(msg);
		}
	}
	else if (eval & EVAL_ASL)
	{
		asl_object_t msg = asl_new(ASL_TYPE_MSG);
		const char *facility;

		if (fac != 0)
		{
			facility = asl_syslog_faciliy_num_to_name(fac);
			if (facility != NULL) asl_set(msg, ASL_KEY_FACILITY, facility);
		}

		_asl_lib_vlog(_sl_asl, eval, msg, fmt, ap);

		asl_release(msg);
	}
}

void
#ifdef __STDC__
syslog(int pri, const char *fmt, ...)
#else
syslog(pri, fmt, va_alist)
int pri;
char *fmt;
va_dcl
#endif
{
	int level = pri & LOG_PRIMASK;
	int fac = pri & LOG_FACMASK;
	uint32_t eval;
	void *addr;

	_syslog_asl_client();

	eval = _asl_evaluate_send(_sl_asl, NULL, level);

	/* don't send install messages to Activity Tracing */
	if (fac == LOG_INSTALL || (fac == 0 && _sl_fac == LOG_INSTALL)) {
		eval &= ~EVAL_SEND_TRACE;
	}

	addr = __builtin_return_address(0);

	if ((eval & EVAL_SEND_TRACE) && os_log_shim_enabled(addr))
	{
		va_list ap;
		os_log_type_t type = shim_syslog_to_log_type[level];

#ifdef __STDC__
		va_start(ap, fmt);
#else
		va_start(ap);
#endif
		os_log_with_args(OS_LOG_DEFAULT, type, fmt, ap, addr);
		va_end(ap);

		if (eval & EVAL_TEXT_FILE)
		{
			va_list ap;
			asl_object_t msg = asl_new(ASL_TYPE_MSG);
			const char *facility;

			if (fac != 0)
			{
				facility = asl_syslog_faciliy_num_to_name(fac);
				if (facility != NULL) asl_set(msg, ASL_KEY_FACILITY, facility);
			}

#ifdef __STDC__
			va_start(ap, fmt);
#else
			va_start(ap);
#endif
			_asl_lib_vlog_text(_sl_asl, eval, msg, fmt, ap);
			va_end(ap);

			asl_release(msg);
		}
	}
	else if (eval & EVAL_ASL)
	{
		va_list ap;
		asl_object_t msg = asl_new(ASL_TYPE_MSG);
		const char *facility;

		if (fac != 0)
		{
			facility = asl_syslog_faciliy_num_to_name(fac);
			if (facility != NULL) asl_set(msg, ASL_KEY_FACILITY, facility);
		}

#ifdef __STDC__
		va_start(ap, fmt);
#else
		va_start(ap);
#endif
		_asl_lib_vlog(_sl_asl, eval, msg, fmt, ap);
		va_end(ap);

		asl_release(msg);
	}
}

#ifndef BUILDING_VARIANT

void
openlog(const char *ident, int opts, int logfac)
{
	const char *facility;
	uint32_t asl_opts;

	pthread_mutex_lock(&_sl_lock);

	if (_sl_asl != NULL) asl_release(_sl_asl);
	_sl_asl = NULL;

	free(_sl_ident);
	_sl_ident = NULL;

	/* open with specified parameters */

	if (ident != NULL) _sl_ident = strdup(ident);
	/* NB we allow the strdup to fail silently */

	_sl_fac = logfac;
	facility = asl_syslog_faciliy_num_to_name(_sl_fac);

	_sl_opts = opts;
	asl_opts = ASL_OPT_SYSLOG_LEGACY;

	if (_sl_opts & LOG_NO_NOTIFY) asl_opts |= ASL_OPT_NO_REMOTE;
	if (_sl_opts & LOG_PERROR) asl_opts |= ASL_OPT_STDERR;

	_sl_mask = ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG);

	_sl_asl = asl_open(_sl_ident, facility, asl_opts);
	asl_set_filter(_sl_asl, _sl_mask);

	pthread_mutex_unlock(&_sl_lock);
}

void
closelog()
{
	pthread_mutex_lock(&_sl_lock);

	if (_sl_asl != NULL) asl_close(_sl_asl);
	_sl_asl = NULL;

	free(_sl_ident);
	_sl_ident = NULL;

	_sl_fac = 0;

	pthread_mutex_unlock(&_sl_lock);
}

/* setlogmask -- set the log mask level */
int
setlogmask(int mask)
{
	int oldmask;

	if (mask == 0) return _sl_mask;

	pthread_mutex_lock(&_sl_lock);

	_sl_mask = mask;
	oldmask = asl_set_filter(_sl_asl, mask);
	if (_sl_opts & LOG_PERROR) asl_set_output_file_filter(_sl_asl, STDERR_FILENO, mask);

	pthread_mutex_unlock(&_sl_lock);

	return oldmask;
}

#endif /* !BUILDING_VARIANT */
Commit	Line	Data
81582353	1	/*
5222c21d	2	* Copyright (c) 1999-2015 Apple Inc. All rights reserved.
81582353 A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. Please obtain a copy of the License at
	10	* http://www.opensource.apple.com/apsl/ and read it before using this
	11	* file.
	12	*
	13	* The Original Code and all software distributed under the License are
	14	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	15	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	16	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	18	* Please see the License for the specific language governing rights and
	19	* limitations under the License.
	20	*
	21	* @APPLE_LICENSE_HEADER_END@
	22	*/
	23
	24	/*
	25	* Copyright (c) 1993
	26	* The Regents of the University of California. All rights reserved.
	27	*
	28	* Redistribution and use in source and binary forms, with or without
	29	* modification, are permitted provided that the following conditions
	30	* are met:
	31	* 1. Redistributions of source code must retain the above copyright
	32	* notice, this list of conditions and the following disclaimer.
	33	* 2. Redistributions in binary form must reproduce the above copyright
	34	* notice, this list of conditions and the following disclaimer in the
	35	* documentation and/or other materials provided with the distribution.
	36	* 3. All advertising materials mentioning features or use of this software
	37	* must display the following acknowledgement:
	38	* This product includes software developed by the University of
	39	* California, Berkeley and its contributors.
	40	* 4. Neither the name of the University nor the names of its contributors
	41	* may be used to endorse or promote products derived from this software
	42	* without specific prior written permission.
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	45	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	47	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	48	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	49	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	50	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	51	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	52	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	53	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	54	* SUCH DAMAGE.
	55	*/
	56
f3df4c03 A	57	#include <stdio.h>
f3df4c03 A	58
81582353 A	59	#include <sys/syslog.h>
	60	#include <stdlib.h>
	61	#include <string.h>
	62	#include <stdint.h>
	63	#include <pthread.h>
	64	#include <dispatch/dispatch.h>
	65	#include <asl.h>
f3df4c03 A	66	#include <asl_msg.h>
f3df4c03 A	67	#include <asl_private.h>
af7d442c	68	#include <os/log.h>
5222c21d	69	#include <os/log_private.h>
81582353 A	70
	71	#ifdef __STDC__
	72	#include <stdarg.h>
	73	#else
	74	#include <varargs.h>
	75	#endif
	76
	77	#define LOG_NO_NOTIFY 0x1000
	78	extern const char *asl_syslog_faciliy_num_to_name(int n);
	79
	80	#ifdef BUILDING_VARIANT
	81	__private_extern__ pthread_mutex_t _sl_lock;
5222c21d	82	__private_extern__ asl_object_t _sl_asl;
81582353 A	83	__private_extern__ char *_sl_ident;
	84	__private_extern__ int _sl_fac;
	85	__private_extern__ int _sl_opts;
	86	__private_extern__ int _sl_mask;
	87	#else /* !BUILDING_VARIANT */
	88	__private_extern__ pthread_mutex_t _sl_lock = PTHREAD_MUTEX_INITIALIZER;
5222c21d	89	__private_extern__ asl_object_t _sl_asl = NULL;
81582353 A	90	__private_extern__ char *_sl_ident = NULL;
	91	__private_extern__ int _sl_fac = 0;
	92	__private_extern__ int _sl_opts = 0;
	93	__private_extern__ int _sl_mask = 0;
	94	#endif /* BUILDING_VARIANT */
	95
5222c21d A	96	#define EVAL_ASL (EVAL_SEND_ASL \| EVAL_TEXT_FILE \| EVAL_ASL_FILE)
5222c21d A	97
af7d442c A	98	static const os_log_type_t shim_syslog_to_log_type[8] = {
	99	OS_LOG_TYPE_DEFAULT, // LOG_EMERG
	100	OS_LOG_TYPE_DEFAULT, // LOG_ALERT
	101	OS_LOG_TYPE_DEFAULT, // LOG_CRIT
	102	OS_LOG_TYPE_DEFAULT, // LOG_ERR
	103	OS_LOG_TYPE_DEFAULT, // LOG_WARNING
	104	OS_LOG_TYPE_DEFAULT, // LOG_NOTICE
	105	OS_LOG_TYPE_INFO, // LOG_INFO
	106	OS_LOG_TYPE_DEBUG // LOG_DEBUG
5222c21d A	107	};
	108
	109	extern uint32_t _asl_evaluate_send(asl_object_t client, asl_object_t m, int slevel);
	110	extern uint32_t _asl_lib_vlog(asl_object_t obj, uint32_t eval, asl_object_t msg, const char *format, va_list ap);
af7d442c	111	extern uint32_t _asl_lib_vlog_text(asl_object_t obj, uint32_t eval, asl_object_t msg, const char *format, va_list ap);
5222c21d A	112
	113
	114	/* SHIM SPI */
	115	asl_object_t
	116	_syslog_asl_client()
	117	{
	118	pthread_mutex_lock(&_sl_lock);
	119	if (_sl_asl == NULL)
	120	{
	121	_sl_asl = asl_open(NULL, NULL, ASL_OPT_SYSLOG_LEGACY);
	122	_sl_mask = ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG);
	123	asl_set_filter(_sl_asl, _sl_mask);
	124	}
	125	pthread_mutex_unlock(&_sl_lock);
	126
	127	return _sl_asl;
	128	}
	129
81582353 A	130	/*
	131	* syslog, vsyslog --
	132	* print message on log file; output is intended for syslogd(8).
	133	*/
5222c21d A	134
	135	void
	136	vsyslog(int pri, const char *fmt, va_list ap)
	137	{
	138	int level = pri & LOG_PRIMASK;
af7d442c	139	int fac = pri & LOG_FACMASK;
5222c21d	140	uint32_t eval;
af7d442c A	141	void *addr;
af7d442c A	142
5222c21d A	143	_syslog_asl_client();
	144
	145	eval = _asl_evaluate_send(_sl_asl, NULL, level);
af7d442c A	146
	147	/* don't send install messages to Activity Tracing */
	148	if (fac == LOG_INSTALL \|\| (fac == 0 && _sl_fac == LOG_INSTALL)) {
	149	eval &= ~EVAL_SEND_TRACE;
	150	}
	151
	152	addr = __builtin_return_address(0);
	153
	154	if ((eval & EVAL_SEND_TRACE) && os_log_shim_enabled(addr))
5222c21d A	155	{
5222c21d A	156	va_list ap_copy;
af7d442c	157	os_log_type_t type = shim_syslog_to_log_type[level];
5222c21d A	158
5222c21d A	159	va_copy(ap_copy, ap);
af7d442c	160	os_log_with_args(OS_LOG_DEFAULT, type, fmt, ap_copy, addr);
5222c21d	161	va_end(ap_copy);
af7d442c A	162
	163	if (eval & EVAL_TEXT_FILE)
	164	{
	165	asl_object_t msg = asl_new(ASL_TYPE_MSG);
	166	const char *facility;
	167
	168	if (fac != 0)
	169	{
	170	facility = asl_syslog_faciliy_num_to_name(fac);
	171	if (facility != NULL) asl_set(msg, ASL_KEY_FACILITY, facility);
	172	}
	173
	174	_asl_lib_vlog_text(_sl_asl, eval, msg, fmt, ap);
	175
	176	asl_release(msg);
	177	}
5222c21d	178	}
af7d442c	179	else if (eval & EVAL_ASL)
5222c21d A	180	{
	181	asl_object_t msg = asl_new(ASL_TYPE_MSG);
	182	const char *facility;
af7d442c	183
5222c21d A	184	if (fac != 0)
	185	{
	186	facility = asl_syslog_faciliy_num_to_name(fac);
	187	if (facility != NULL) asl_set(msg, ASL_KEY_FACILITY, facility);
	188	}
af7d442c	189
5222c21d	190	_asl_lib_vlog(_sl_asl, eval, msg, fmt, ap);
af7d442c	191
5222c21d A	192	asl_release(msg);
	193	}
	194	}
	195
81582353 A	196	void
	197	#ifdef __STDC__
	198	syslog(int pri, const char *fmt, ...)
	199	#else
	200	syslog(pri, fmt, va_alist)
5222c21d A	201	int pri;
	202	char *fmt;
	203	va_dcl
81582353 A	204	#endif
81582353 A	205	{
5222c21d	206	int level = pri & LOG_PRIMASK;
af7d442c	207	int fac = pri & LOG_FACMASK;
5222c21d	208	uint32_t eval;
af7d442c A	209	void *addr;
af7d442c A	210
5222c21d A	211	_syslog_asl_client();
	212
	213	eval = _asl_evaluate_send(_sl_asl, NULL, level);
af7d442c A	214
	215	/* don't send install messages to Activity Tracing */
	216	if (fac == LOG_INSTALL \|\| (fac == 0 && _sl_fac == LOG_INSTALL)) {
	217	eval &= ~EVAL_SEND_TRACE;
	218	}
	219
	220	addr = __builtin_return_address(0);
	221
	222	if ((eval & EVAL_SEND_TRACE) && os_log_shim_enabled(addr))
5222c21d A	223	{
5222c21d A	224	va_list ap;
af7d442c A	225	os_log_type_t type = shim_syslog_to_log_type[level];
af7d442c A	226
81582353	227	#ifdef __STDC__
5222c21d	228	va_start(ap, fmt);
81582353	229	#else
5222c21d	230	va_start(ap);
81582353	231	#endif
af7d442c	232	os_log_with_args(OS_LOG_DEFAULT, type, fmt, ap, addr);
5222c21d	233	va_end(ap);
af7d442c A	234
	235	if (eval & EVAL_TEXT_FILE)
	236	{
	237	va_list ap;
	238	asl_object_t msg = asl_new(ASL_TYPE_MSG);
	239	const char *facility;
	240
	241	if (fac != 0)
	242	{
	243	facility = asl_syslog_faciliy_num_to_name(fac);
	244	if (facility != NULL) asl_set(msg, ASL_KEY_FACILITY, facility);
	245	}
	246
	247	#ifdef __STDC__
	248	va_start(ap, fmt);
	249	#else
	250	va_start(ap);
	251	#endif
	252	_asl_lib_vlog_text(_sl_asl, eval, msg, fmt, ap);
	253	va_end(ap);
	254
	255	asl_release(msg);
	256	}
5222c21d	257	}
af7d442c	258	else if (eval & EVAL_ASL)
81582353	259	{
5222c21d A	260	va_list ap;
	261	asl_object_t msg = asl_new(ASL_TYPE_MSG);
	262	const char *facility;
5222c21d A	263
5222c21d A	264	if (fac != 0)
81582353	265	{
5222c21d A	266	facility = asl_syslog_faciliy_num_to_name(fac);
5222c21d A	267	if (facility != NULL) asl_set(msg, ASL_KEY_FACILITY, facility);
81582353	268	}
af7d442c	269
5222c21d A	270	#ifdef __STDC__
	271	va_start(ap, fmt);
	272	#else
	273	va_start(ap);
	274	#endif
	275	_asl_lib_vlog(_sl_asl, eval, msg, fmt, ap);
	276	va_end(ap);
af7d442c	277
5222c21d	278	asl_release(msg);
81582353	279	}
81582353 A	280	}
	281
	282	#ifndef BUILDING_VARIANT
	283
	284	void
	285	openlog(const char *ident, int opts, int logfac)
	286	{
	287	const char *facility;
	288	uint32_t asl_opts;
	289
	290	pthread_mutex_lock(&_sl_lock);
	291
5222c21d	292	if (_sl_asl != NULL) asl_release(_sl_asl);
81582353 A	293	_sl_asl = NULL;
	294
	295	free(_sl_ident);
	296	_sl_ident = NULL;
	297
	298	/* open with specified parameters */
	299
	300	if (ident != NULL) _sl_ident = strdup(ident);
	301	/* NB we allow the strdup to fail silently */
	302
	303	_sl_fac = logfac;
	304	facility = asl_syslog_faciliy_num_to_name(_sl_fac);
	305
	306	_sl_opts = opts;
	307	asl_opts = ASL_OPT_SYSLOG_LEGACY;
	308
	309	if (_sl_opts & LOG_NO_NOTIFY) asl_opts \|= ASL_OPT_NO_REMOTE;
	310	if (_sl_opts & LOG_PERROR) asl_opts \|= ASL_OPT_STDERR;
	311
	312	_sl_mask = ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG);
	313
	314	_sl_asl = asl_open(_sl_ident, facility, asl_opts);
	315	asl_set_filter(_sl_asl, _sl_mask);
	316
	317	pthread_mutex_unlock(&_sl_lock);
	318	}
	319
	320	void
	321	closelog()
	322	{
	323	pthread_mutex_lock(&_sl_lock);
	324
	325	if (_sl_asl != NULL) asl_close(_sl_asl);
	326	_sl_asl = NULL;
	327
f3df4c03	328	free(_sl_ident);
81582353 A	329	_sl_ident = NULL;
81582353 A	330
af7d442c A	331	_sl_fac = 0;
af7d442c A	332
81582353 A	333	pthread_mutex_unlock(&_sl_lock);
	334	}
	335
	336	/* setlogmask -- set the log mask level */
	337	int
	338	setlogmask(int mask)
	339	{
	340	int oldmask;
	341
	342	if (mask == 0) return _sl_mask;
	343
	344	pthread_mutex_lock(&_sl_lock);
	345
	346	_sl_mask = mask;
	347	oldmask = asl_set_filter(_sl_asl, mask);
f3df4c03	348	if (_sl_opts & LOG_PERROR) asl_set_output_file_filter(_sl_asl, STDERR_FILENO, mask);
81582353 A	349
	350	pthread_mutex_unlock(&_sl_lock);
	351
	352	return oldmask;
	353	}
	354
	355	#endif /* !BUILDING_VARIANT */