[unix-history] / usr / src / usr.sbin / amd / amd / xutil.c

/*
 * Copyright (c) 1990 Jan-Simon Pendry
 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * 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.
 *
 *	@(#)xutil.c	5.3 (Berkeley) 5/12/91
 *
 * $Id: xutil.c,v 5.2.1.5 91/05/07 22:18:43 jsp Alpha $
 *
 */

#include "config.h"
#ifdef HAS_SYSLOG
#include <syslog.h>
#endif /* HAS_SYSLOG */

FILE *logfp = stderr;		/* Log errors to stderr initially */
#ifdef HAS_SYSLOG
int syslogging;
#endif /* HAS_SYSLOG */
int xlog_level = XLOG_ALL & ~XLOG_MAP & ~XLOG_STATS;
int xlog_level_init = ~0;

/*
 * List of log options
 */
struct opt_tab xlog_opt[] = {
	{ "all", XLOG_ALL },		/* All messages */
#ifdef DEBUG
	{ "debug", XLOG_DEBUG },	/* Debug messages */
#endif /* DEBUG */
	{ "error", XLOG_ERROR },	/* Non-fatal system errors */
	{ "fatal", XLOG_FATAL },	/* Fatal errors */
	{ "info", XLOG_INFO },		/* Information */
	{ "map", XLOG_MAP },		/* Map errors */
	{ "stats", XLOG_STATS },	/* Additional statistical information */
	{ "user", XLOG_USER },		/* Non-fatal user errors */
	{ "warn", XLOG_WARNING },	/* Warnings */
	{ "warning", XLOG_WARNING },	/* Warnings */
	{ 0, 0 }
};

voidp xmalloc(len)
int len;
{
	voidp p;
	int retries = 600;

	do {
		p = (voidp) malloc((unsigned) len);
		if (p) {
#if defined(DEBUG) && defined(DEBUG_MEM)
			Debug(D_MEM) plog(XLOG_DEBUG, "Allocated size %d; block %#x", len, p);
#endif /* defined(DEBUG) && defined(DEBUG_MEM) */
			return p;
		}
		if (retries > 0) {
			plog(XLOG_ERROR, "Retrying memory allocation");
			sleep(1);
		}
	} while (--retries);

	plog(XLOG_FATAL, "Out of memory");
	going_down(1);

	abort();

	return 0;
}

voidp xrealloc(ptr, len)
voidp ptr;
int len;
{
#if defined(DEBUG) && defined(DEBUG_MEM)
	Debug(D_MEM) plog(XLOG_DEBUG, "Reallocated size %d; block %#x", len, ptr);
#endif /* defined(DEBUG) && defined(DEBUG_MEM) */

	if (ptr)
		ptr = (voidp) realloc(ptr, (unsigned) len);
	else
		ptr = (voidp) xmalloc((unsigned) len);

	if (!ptr) {
		plog(XLOG_FATAL, "Out of memory in realloc");
		going_down(1);
		abort();
	}
	return ptr;
}

#if defined(DEBUG) && defined(DEBUG_MEM)
xfree(f, l, p)
char *f;
int l;
voidp p;
{
	Debug(D_MEM) plog(XLOG_DEBUG, "Free in %s:%d: block %#x", f, l, p);
#undef free
	free(p);
}
#endif /* defined(DEBUG) && defined(DEBUG_MEM) */
#ifdef DEBUG_MEM
static int mem_bytes;
static int orig_mem_bytes;
static void checkup_mem(P_void)
{
extern struct mallinfo __mallinfo;
	if (mem_bytes != __mallinfo.uordbytes) {
		if (orig_mem_bytes == 0)
			mem_bytes = orig_mem_bytes = __mallinfo.uordbytes;
		else {
			fprintf(logfp, "%s[%d]: ", progname, mypid);
			if (mem_bytes < __mallinfo.uordbytes) {
				fprintf(logfp, "ALLOC: %d bytes",
					__mallinfo.uordbytes - mem_bytes);
			} else {
				fprintf(logfp, "FREE: %d bytes",
					mem_bytes - __mallinfo.uordbytes);
			}
			mem_bytes = __mallinfo.uordbytes;
			fprintf(logfp, ", making %d missing\n",
				mem_bytes - orig_mem_bytes);
		}
	}
	malloc_verify();
}
#endif /* DEBUG_MEM */

/*
 * Take a log format string and expand occurences of %m
 * with the current error code take from errno.
 */
INLINE
static void expand_error(f, e)
char *f;
char *e;
{
	extern int sys_nerr;
	extern char *sys_errlist[];
	char *p;
	int error = errno;

	for (p = f; *e = *p; e++, p++) {
		if (p[0] == '%' && p[1] == 'm') {
			char *errstr;
			if (error < 0 || error >= sys_nerr)
				errstr = 0;
			else
				errstr = sys_errlist[error];
			if (errstr)
				strcpy(e, errstr);
			else
				sprintf(e, "Error %d", error);
			e += strlen(e) - 1;
			p++;
		}
	}
}

/*
 * Output the time of day and hostname to the logfile
 */
static void show_time_host_and_name(lvl)
int lvl;
{
static time_t last_t = 0;
static char *last_ctime = 0;
	time_t t = clocktime();
	char *sev;
	extern char *ctime();

#if defined(DEBUG) && defined(PARANOID)
extern char **gargv;
#endif /* defined(DEBUG) && defined(PARANOID) */

	if (t != last_t) {
		last_ctime = ctime(&t);
		last_t = t;
	}

	switch (lvl) {
	case XLOG_FATAL:	sev = "fatal:"; break;
	case XLOG_ERROR: 	sev = "error:"; break;
	case XLOG_USER:		sev = "user: "; break;
	case XLOG_WARNING:	sev = "warn: "; break;
	case XLOG_INFO:		sev = "info: "; break;
	case XLOG_DEBUG:	sev = "debug:"; break;
	case XLOG_MAP:		sev = "map:  "; break;
	case XLOG_STATS:	sev = "stats:"; break;
	default:		sev = "hmm:  "; break;
	}
	fprintf(logfp, "%15.15s %s %s[%d]/%s ",
		last_ctime+4, hostname,
#if defined(DEBUG) && defined(PARANOID)
		gargv[0],
#else
		progname,
#endif /* defined(DEBUG) && defined(PARANOID) */
		mypid,
		sev);
}

#ifdef DEBUG
/*VARARGS1*/
void dplog(fmt, j,s,_,p,e,n,d,r,y)
char *fmt;
char *j, *s, *_, *p, *e, *n, *d, *r, *y;
{
	plog(XLOG_DEBUG, fmt, j,s,_,p,e,n,d,r,y);
}

#endif /* DEBUG */
/*VARARGS1*/
void plog(lvl, fmt, j,s,_,p,e,n,d,r,y)
int lvl;
char *fmt;
char *j, *s, *_, *p, *e, *n, *d, *r, *y;
{
	char msg[1024];
	char efmt[1024];
	char *ptr = msg;

	if (!(xlog_level & lvl))
		return;

#ifdef DEBUG_MEM
	checkup_mem();
#endif /* DEBUG_MEM */

	expand_error(fmt, efmt);
	sprintf(ptr, efmt, j,s,_,p,e,n,d,r,y);
	ptr += strlen(ptr);
	if (ptr[-1] == '\n')
		*--ptr  = '\0';
#ifdef HAS_SYSLOG
	if (syslogging) {
		switch(lvl) {	/* from mike <mcooper@usc.edu> */
		case XLOG_FATAL:	lvl = LOG_CRIT; break;
		case XLOG_ERROR: 	lvl = LOG_ERR; break;
		case XLOG_USER:		lvl = LOG_WARNING; break;
		case XLOG_WARNING:	lvl = LOG_WARNING; break;
		case XLOG_INFO:		lvl = LOG_INFO; break;
		case XLOG_DEBUG:	lvl = LOG_DEBUG; break;
		case XLOG_MAP:		lvl = LOG_DEBUG; break;
		case XLOG_STATS:	lvl = LOG_INFO; break;
		default:		lvl = LOG_ERR; break;
		}
		syslog(lvl, "%s", msg);
		return;
	}
#endif /* HAS_SYSLOG */

	*ptr++ = '\n';
	*ptr = '\0';

	/*
	 * Mimic syslog header
	 */
	show_time_host_and_name(lvl);
	fwrite(msg, ptr - msg, 1, logfp);
	fflush(logfp);
}

void show_opts P((int ch, struct opt_tab *opts));
void show_opts(ch, opts)
int ch;
struct opt_tab *opts;
{
	/*
	 * Display current debug options
	 */
	int i;
	int s = '{';
	fprintf(stderr, "\t[-%c {no}", ch);
	for (i = 0; opts[i].opt; i++) {
		fprintf(stderr, "%c%s", s, opts[i].opt);
		s = ',';
	}
	fputs("}]\n", stderr);
}

int cmdoption P((char *s, struct opt_tab *optb, int *flags));
int cmdoption(s, optb, flags)
char *s;
struct opt_tab *optb;
int *flags;
{
	char *p = s;
	int errs = 0;

	while (p && *p) {
		int neg;
		char *opt;
		struct opt_tab *dp, *dpn = 0;

		s = p;
		p = strchr(p, ',');
		if (p)
			*p = '\0';

		if (s[0] == 'n' && s[1] == 'o') {
			opt = s + 2;
			neg = 1;
		} else {
			opt = s;
			neg = 0;
		}

		/*
		 * Scan the array of debug options to find the
		 * corresponding flag value.  If it is found
		 * then set (or clear) the flag (depending on
		 * whether the option was prefixed with "no").
		 */
		for (dp = optb; dp->opt; dp++) {
			if (strcmp(opt, dp->opt) == 0)
				break;
			if (opt != s && !dpn && strcmp(s, dp->opt) == 0)
				dpn = dp;
		}

		if (dp->opt || dpn) {
			if (!dp->opt) {
				dp = dpn;
				neg = !neg;
			}
			if (neg)
				*flags &= ~dp->flag;
			else
				*flags |= dp->flag;
		} else {
			/*
			 * This will log to stderr when parsing the command line
			 * since any -l option will not yet have taken effect.
			 */
			plog(XLOG_USER, "option \"%s\" not recognised", s);
			errs++;
		}
		/*
		 * Put the comma back
		 */
		if (p)
			*p++ = ',';
	}

	return errs;
}

/*
 * Switch on/off logging options
 */
int switch_option(opt)
char *opt;
{
	int xl = xlog_level;
	int rc = cmdoption(opt, xlog_opt, &xl);
	if (rc) {
		rc = EINVAL;
	} else {
		/*
		 * Keep track of initial log level, and
		 * don't allow options to be turned off.
		 */
		if (xlog_level_init == ~0)
			xlog_level_init = xl;
		else
			xl |= xlog_level_init;
		xlog_level = xl;
	}
	return rc;
}

/*
 * Change current logfile
 */
int switch_to_logfile P((char *logfile));
int switch_to_logfile(logfile)
char *logfile;
{
	FILE *new_logfp = stderr;

	if (logfile) {
#ifdef HAS_SYSLOG
		syslogging = 0;
#endif /* HAS_SYSLOG */
		if (strcmp(logfile, "/dev/stderr") == 0)
			new_logfp = stderr;
		else if (strcmp(logfile, "syslog") == 0) {
#ifdef HAS_SYSLOG
			syslogging = 1;
			new_logfp = stderr;
#if defined(LOG_CONS) && defined(LOG_NOWAIT)
			openlog(progname, LOG_PID|LOG_CONS|LOG_NOWAIT,
				LOG_DAEMON);
#else
			/* 4.2 compat mode - XXX */
			openlog(progname, LOG_PID);
#endif /* LOG_CONS && LOG_NOWAIT */
#else
			plog(XLOG_WARNING, "syslog option not supported, logging unchanged");
#endif /* HAS_SYSLOG */
		} else {
			(void) umask(orig_umask);
			new_logfp = fopen(logfile, "a");
			umask(0);
		}
	}

	/*
	 * If we couldn't open a new file, then continue using the old.
	 */
	if (!new_logfp && logfile) {
		plog(XLOG_USER, "%s: Can't open logfile: %m", logfile);
		return 1;
	}
	/*
	 * Close the previous file
	 */
	if (logfp && logfp != stderr)
		(void) fclose(logfp);
	logfp = new_logfp;
	return 0;
}

time_t clock_valid = 0;
time_t xclock_valid = 0;
#ifndef clocktime
time_t clocktime(P_void)
{
	time_t now = time(&clock_valid);
	if (xclock_valid > now) {
		/*
		 * Someone set the clock back!
		 */
		plog(XLOG_WARNING, "system clock reset");
		reschedule_timeouts(now, xclock_valid);
	}
	return xclock_valid = now;
}
#endif /* clocktime */
Commit	Line	Data
903b00b4	1	/*
903b00b4 JSP	2	* Copyright (c) 1990 Jan-Simon Pendry
	3	* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
	4	* Copyright (c) 1990 The Regents of the University of California.
	5	* All rights reserved.
	6	*
	7	* This code is derived from software contributed to Berkeley by
	8	* Jan-Simon Pendry at Imperial College, London.
	9	*
af359dea C	10	* Redistribution and use in source and binary forms, with or without
	11	* modification, are permitted provided that the following conditions
	12	* are met:
	13	* 1. Redistributions of source code must retain the above copyright
	14	* notice, this list of conditions and the following disclaimer.
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in the
	17	* documentation and/or other materials provided with the distribution.
	18	* 3. All advertising materials mentioning features or use of this software
	19	* must display the following acknowledgement:
	20	* This product includes software developed by the University of
	21	* California, Berkeley and its contributors.
	22	* 4. Neither the name of the University nor the names of its contributors
	23	* may be used to endorse or promote products derived from this software
	24	* without specific prior written permission.
	25	*
	26	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	27	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	28	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	29	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	30	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	31	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	32	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	33	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	34	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	35	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	36	* SUCH DAMAGE.
	37	*
	38	* @(#)xutil.c 5.3 (Berkeley) 5/12/91
	39	*
	40	* $Id: xutil.c,v 5.2.1.5 91/05/07 22:18:43 jsp Alpha $
903b00b4	41	*
903b00b4 JSP	42	*/
	43
	44	#include "config.h"
	45	#ifdef HAS_SYSLOG
	46	#include <syslog.h>
	47	#endif /* HAS_SYSLOG */
	48
	49	FILE logfp = stderr; / Log errors to stderr initially */
	50	#ifdef HAS_SYSLOG
	51	int syslogging;
	52	#endif /* HAS_SYSLOG */
	53	int xlog_level = XLOG_ALL & ~XLOG_MAP & ~XLOG_STATS;
	54	int xlog_level_init = ~0;
	55
	56	/*
	57	* List of log options
	58	*/
	59	struct opt_tab xlog_opt[] = {
	60	{ "all", XLOG_ALL }, /* All messages */
	61	#ifdef DEBUG
	62	{ "debug", XLOG_DEBUG }, /* Debug messages */
	63	#endif /* DEBUG */
	64	{ "error", XLOG_ERROR }, /* Non-fatal system errors */
	65	{ "fatal", XLOG_FATAL }, /* Fatal errors */
	66	{ "info", XLOG_INFO }, /* Information */
	67	{ "map", XLOG_MAP }, /* Map errors */
	68	{ "stats", XLOG_STATS }, /* Additional statistical information */
	69	{ "user", XLOG_USER }, /* Non-fatal user errors */
	70	{ "warn", XLOG_WARNING }, /* Warnings */
	71	{ "warning", XLOG_WARNING }, /* Warnings */
	72	{ 0, 0 }
	73	};
	74
	75	voidp xmalloc(len)
	76	int len;
	77	{
	78	voidp p;
	79	int retries = 600;
	80
	81	do {
	82	p = (voidp) malloc((unsigned) len);
	83	if (p) {
	84	#if defined(DEBUG) && defined(DEBUG_MEM)
	85	Debug(D_MEM) plog(XLOG_DEBUG, "Allocated size %d; block %#x", len, p);
	86	#endif /* defined(DEBUG) && defined(DEBUG_MEM) */
	87	return p;
	88	}
	89	if (retries > 0) {
	90	plog(XLOG_ERROR, "Retrying memory allocation");
	91	sleep(1);
	92	}
	93	} while (--retries);
	94
	95	plog(XLOG_FATAL, "Out of memory");
	96	going_down(1);
	97
	98	abort();
	99
	100	return 0;
	101	}
	102
	103	voidp xrealloc(ptr, len)
	104	voidp ptr;
	105	int len;
106	{
107	#if defined(DEBUG) && defined(DEBUG_MEM)
108	Debug(D_MEM) plog(XLOG_DEBUG, "Reallocated size %d; block %#x", len, ptr);
109	#endif /* defined(DEBUG) && defined(DEBUG_MEM) */
110
111	if (ptr)
112	ptr = (voidp) realloc(ptr, (unsigned) len);
113	else
114	ptr = (voidp) xmalloc((unsigned) len);
115
116	if (!ptr) {
117	plog(XLOG_FATAL, "Out of memory in realloc");
118	going_down(1);
119	abort();
120	}
121	return ptr;
122	}
123
124	#if defined(DEBUG) && defined(DEBUG_MEM)
125	xfree(f, l, p)
126	char *f;
127	int l;
128	voidp p;
129	{
130	Debug(D_MEM) plog(XLOG_DEBUG, "Free in %s:%d: block %#x", f, l, p);
131	#undef free
132	free(p);
133	}
134	#endif /* defined(DEBUG) && defined(DEBUG_MEM) */
135	#ifdef DEBUG_MEM
136	static int mem_bytes;
137	static int orig_mem_bytes;
138	static void checkup_mem(P_void)
139	{
140	extern struct mallinfo __mallinfo;
141	if (mem_bytes != __mallinfo.uordbytes) {
142	if (orig_mem_bytes == 0)
143	mem_bytes = orig_mem_bytes = __mallinfo.uordbytes;
144	else {
145	fprintf(logfp, "%s[%d]: ", progname, mypid);
146	if (mem_bytes < __mallinfo.uordbytes) {
147	fprintf(logfp, "ALLOC: %d bytes",
148	__mallinfo.uordbytes - mem_bytes);
149	} else {
150	fprintf(logfp, "FREE: %d bytes",
151	mem_bytes - __mallinfo.uordbytes);
152	}
153	mem_bytes = __mallinfo.uordbytes;
154	fprintf(logfp, ", making %d missing\n",
155	mem_bytes - orig_mem_bytes);
156	}
157	}
158	malloc_verify();
159	}
160	#endif /* DEBUG_MEM */
161
162	/*
163	* Take a log format string and expand occurences of %m
164	* with the current error code take from errno.
165	*/
166	INLINE
167	static void expand_error(f, e)
168	char *f;
169	char *e;
170	{
171	extern int sys_nerr;
172	extern char *sys_errlist[];
173	char *p;
174	int error = errno;
175
176	for (p = f; e = p; e++, p++) {
177	if (p[0] == '%' && p[1] == 'm') {
178	char *errstr;
179	if (error < 0 \|\| error >= sys_nerr)
180	errstr = 0;
181	else
182	errstr = sys_errlist[error];
183	if (errstr)
184	strcpy(e, errstr);
185	else
186	sprintf(e, "Error %d", error);
187	e += strlen(e) - 1;
188	p++;
189	}
190	}
191	}
192
193	/*
194	* Output the time of day and hostname to the logfile
195	*/
196	static void show_time_host_and_name(lvl)
197	int lvl;
198	{
199	static time_t last_t = 0;
200	static char *last_ctime = 0;
201	time_t t = clocktime();
202	char *sev;
203	extern char *ctime();
204
205	#if defined(DEBUG) && defined(PARANOID)
206	extern char **gargv;
207	#endif /* defined(DEBUG) && defined(PARANOID) */
208
209	if (t != last_t) {
210	last_ctime = ctime(&t);
211	last_t = t;
212	}
213
214	switch (lvl) {
215	case XLOG_FATAL: sev = "fatal:"; break;
216	case XLOG_ERROR: sev = "error:"; break;
217	case XLOG_USER: sev = "user: "; break;
218	case XLOG_WARNING: sev = "warn: "; break;
219	case XLOG_INFO: sev = "info: "; break;
220	case XLOG_DEBUG: sev = "debug:"; break;
221	case XLOG_MAP: sev = "map: "; break;
222	case XLOG_STATS: sev = "stats:"; break;
223	default: sev = "hmm: "; break;
224	}
225	fprintf(logfp, "%15.15s %s %s[%d]/%s ",
226	last_ctime+4, hostname,
227	#if defined(DEBUG) && defined(PARANOID)
228	gargv[0],
229	#else
230	progname,
231	#endif /* defined(DEBUG) && defined(PARANOID) */
232	mypid,
233	sev);
234	}
235
236	#ifdef DEBUG
237	/VARARGS1/
238	void dplog(fmt, j,s,_,p,e,n,d,r,y)
239	char *fmt;
240	char j, s, _, p, e, n, d, r, *y;
241	{
242	plog(XLOG_DEBUG, fmt, j,s,_,p,e,n,d,r,y);
243	}
244
245	#endif /* DEBUG */
246	/VARARGS1/
247	void plog(lvl, fmt, j,s,_,p,e,n,d,r,y)
248	int lvl;
249	char *fmt;
250	char j, s, _, p, e, n, d, r, *y;
251	{
252	char msg[1024];
253	char efmt[1024];
254	char *ptr = msg;
255
256	if (!(xlog_level & lvl))
257	return;
258
259	#ifdef DEBUG_MEM
260	checkup_mem();
261	#endif /* DEBUG_MEM */
262
263	expand_error(fmt, efmt);
264	sprintf(ptr, efmt, j,s,_,p,e,n,d,r,y);
265	ptr += strlen(ptr);
266	if (ptr[-1] == '\n')
267	*--ptr = '\0';
268	#ifdef HAS_SYSLOG
269	if (syslogging) {
270	switch(lvl) { /* from mike <mcooper@usc.edu> */
271	case XLOG_FATAL: lvl = LOG_CRIT; break;
272	case XLOG_ERROR: lvl = LOG_ERR; break;
273	case XLOG_USER: lvl = LOG_WARNING; break;
274	case XLOG_WARNING: lvl = LOG_WARNING; break;
275	case XLOG_INFO: lvl = LOG_INFO; break;
276	case XLOG_DEBUG: lvl = LOG_DEBUG; break;
277	case XLOG_MAP: lvl = LOG_DEBUG; break;
278	case XLOG_STATS: lvl = LOG_INFO; break;
279	default: lvl = LOG_ERR; break;
280	}
281	syslog(lvl, "%s", msg);
282	return;
283	}
284	#endif /* HAS_SYSLOG */
285
286	*ptr++ = '\n';
287	*ptr = '\0';
288
289	/*
290	* Mimic syslog header
291	*/
292	show_time_host_and_name(lvl);
293	fwrite(msg, ptr - msg, 1, logfp);
294	fflush(logfp);
295	}
296
297	void show_opts P((int ch, struct opt_tab *opts));
298	void show_opts(ch, opts)
299	int ch;
300	struct opt_tab *opts;
301	{
302	/*
303	* Display current debug options
304	*/
305	int i;
306	int s = '{';
307	fprintf(stderr, "\t[-%c {no}", ch);
308	for (i = 0; opts[i].opt; i++) {
309	fprintf(stderr, "%c%s", s, opts[i].opt);
310	s = ',';
311	}
312	fputs("}]\n", stderr);
313	}
314
315	int cmdoption P((char s, struct opt_tab optb, int *flags));
316	int cmdoption(s, optb, flags)
317	char *s;
318	struct opt_tab *optb;
319	int *flags;
320	{
321	char *p = s;
322	int errs = 0;
323
324	while (p && *p) {
325	int neg;
326	char *opt;
327	struct opt_tab dp, dpn = 0;
328
329	s = p;
330	p = strchr(p, ',');
331	if (p)
332	*p = '\0';
333
334	if (s[0] == 'n' && s[1] == 'o') {
335	opt = s + 2;
336	neg = 1;
337	} else {
338	opt = s;
339	neg = 0;
340	}
341
342	/*
343	* Scan the array of debug options to find the
344	* corresponding flag value. If it is found
345	* then set (or clear) the flag (depending on
346	* whether the option was prefixed with "no").
347	*/
348	for (dp = optb; dp->opt; dp++) {
349	if (strcmp(opt, dp->opt) == 0)
350	break;
351	if (opt != s && !dpn && strcmp(s, dp->opt) == 0)
352	dpn = dp;
353	}
354
355	if (dp->opt \|\| dpn) {
356	if (!dp->opt) {
357	dp = dpn;
358	neg = !neg;
359	}
360	if (neg)
361	*flags &= ~dp->flag;
362	else
363	*flags \|= dp->flag;
364	} else {
365	/*
366	* This will log to stderr when parsing the command line
367	* since any -l option will not yet have taken effect.
368	*/
369	plog(XLOG_USER, "option \"%s\" not recognised", s);
370	errs++;
371	}
372	/*
373	* Put the comma back
374	*/
375	if (p)
376	*p++ = ',';
377	}
378
379	return errs;
380	}
381
382	/*
383	* Switch on/off logging options
384	*/
385	int switch_option(opt)
386	char *opt;
387	{
388	int xl = xlog_level;
389	int rc = cmdoption(opt, xlog_opt, &xl);
390	if (rc) {
391	rc = EINVAL;
392	} else {
393	/*
394	* Keep track of initial log level, and
395	* don't allow options to be turned off.
396	*/
397	if (xlog_level_init == ~0)
398	xlog_level_init = xl;
399	else
400	xl \|= xlog_level_init;
401	xlog_level = xl;
402	}
403	return rc;
404	}
405
406	/*
407	* Change current logfile
408	*/
409	int switch_to_logfile P((char *logfile));
410	int switch_to_logfile(logfile)
411	char *logfile;
412	{
413	FILE *new_logfp = stderr;
414
415	if (logfile) {
416	#ifdef HAS_SYSLOG
417	syslogging = 0;
418	#endif /* HAS_SYSLOG */
419	if (strcmp(logfile, "/dev/stderr") == 0)
420	new_logfp = stderr;
421	else if (strcmp(logfile, "syslog") == 0) {
422	#ifdef HAS_SYSLOG
423	syslogging = 1;
424	new_logfp = stderr;
425	#if defined(LOG_CONS) && defined(LOG_NOWAIT)
426	openlog(progname, LOG_PID\|LOG_CONS\|LOG_NOWAIT,
427	LOG_DAEMON);
428	#else
429	/* 4.2 compat mode - XXX */
430	openlog(progname, LOG_PID);
431	#endif /* LOG_CONS && LOG_NOWAIT */
432	#else
433	plog(XLOG_WARNING, "syslog option not supported, logging unchanged");
434	#endif /* HAS_SYSLOG */
435	} else {
436	(void) umask(orig_umask);
437	new_logfp = fopen(logfile, "a");
438	umask(0);
439	}
440	}
441
442	/*
443	* If we couldn't open a new file, then continue using the old.
444	*/
445	if (!new_logfp && logfile) {
446	plog(XLOG_USER, "%s: Can't open logfile: %m", logfile);
447	return 1;
448	}
449	/*
450	* Close the previous file
451	*/
452	if (logfp && logfp != stderr)
453	(void) fclose(logfp);
454	logfp = new_logfp;
455	return 0;
456	}
457
458	time_t clock_valid = 0;
459	time_t xclock_valid = 0;
460	#ifndef clocktime
461	time_t clocktime(P_void)
462	{
463	time_t now = time(&clock_valid);
464	if (xclock_valid > now) {
465	/*
466	* Someone set the clock back!
467	*/
468	plog(XLOG_WARNING, "system clock reset");
469	reschedule_timeouts(now, xclock_valid);
470	}
471	return xclock_valid = now;
472	}
473	#endif /* clocktime */