Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/rbootd/rbootd.c	Lines:	0	122	0.0 %
Date:	2017-11-13	Branches:	0	80	0.0 %


/*	$OpenBSD: rbootd.c,v 1.31 2016/05/29 02:19:02 guenther Exp $	*/
/*	$NetBSD: rbootd.c,v 1.5 1995/10/06 05:12:17 thorpej Exp $	*/

/*
 * Copyright (c) 1988, 1992 The University of Utah and the Center
 *	for Software Science (CSS).
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Center for Software Science of the University of Utah Computer
 * Science Department.  CSS requests users of this software to return
 * to css-dist@cs.utah.edu any improvements that they make and grant
 * CSS redistribution rights.
 *
 * 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. 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.
 *
 *	from: @(#)rbootd.c	8.1 (Berkeley) 6/4/93
 *
 * From: Utah Hdr: rbootd.c 3.1 92/07/06
 * Author: Jeff Forys, University of Utah CSS
 */

#include <sys/time.h>

#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <limits.h>
#include <pwd.h>
#include <poll.h>

#include "defs.h"

extern	char *__progname;	/* from crt0.o */

volatile sig_atomic_t	dodebugoff;
volatile sig_atomic_t	dodebugon;
volatile sig_atomic_t	doreconfig;

void DebugOff(int);
void DebugOn(int);
void ReConfig(int);
void Exit(int);

void DoDebugOff(void);
void DoDebugOn(void);
void DoReConfig(void);

void DoTimeout(void);
CLIENT *FindClient(RMPCONN *);

int
main(int argc, char *argv[])
{
	int c, fd;
	struct passwd *pw;
	struct pollfd pfd[1];

	closefrom(STDERR_FILENO + 1);

	if ((pw = getpwnam("_rbootd")) == NULL)
		err(1, "getpwnam");

	while ((c = getopt(argc, argv, "adi:")) != -1)
		switch (c) {
		case 'a':
			BootAny++;
			break;
		case 'd':
			DebugFlg++;
			break;
		case 'i':
			IntfName = optarg;
			break;
		}
	for (; optind < argc; optind++) {
		if (ConfigFile == NULL)
			ConfigFile = argv[optind];
		else {
			warnx("too many config files (`%s' ignored)",
			    argv[optind]);
		}
	}

	if (ConfigFile == NULL)			/* use default config file */
		ConfigFile = DfltConfig;

	if (DebugFlg) {
		DbgFp = stdout;				/* output to stdout */

		(void) signal(SIGUSR1, SIG_IGN);	/* dont muck w/DbgFp */
		(void) signal(SIGUSR2, SIG_IGN);
		(void) fclose(stderr);			/* finished with it */
	} else {
		if (daemon(0, 0))
			err(1, "can't detach from terminal");

		(void) signal(SIGUSR1, DebugOn);
		(void) signal(SIGUSR2, DebugOff);
	}

	/*
	 *  If no interface was specified, get one now.
	 *
	 *  This is convoluted because we want to get the default interface
	 *  name for the syslog("restarted") message.  If BpfGetIntfName()
	 *  runs into an error, it will return a syslog-able error message
	 *  (in `errmsg') which will be displayed here.
	 */
	if (IntfName == NULL) {
		char *errmsg;

		if ((IntfName = BpfGetIntfName(&errmsg)) == NULL) {
			/* BpfGetIntfName() returns safe names, using %m */
			syslog(LOG_ERR, "%s", errmsg);
			DoExit();
		}
	}

	openlog(__progname, LOG_PID, LOG_DAEMON);
	fd = BpfOpen();
	syslog(LOG_NOTICE, "restarted (%s)", IntfName);

	(void) signal(SIGHUP, ReConfig);
	(void) signal(SIGINT, Exit);
	(void) signal(SIGTERM, Exit);

	gethostname(MyHost, HOST_NAME_MAX+1);

	/*
	 *  All boot files are relative to the boot directory, we might
	 *  as well chdir() there to make life easier.
	 */
	if (chdir(BootDir) < 0) {
		syslog(LOG_ERR, "chdir: %m (%s)", BootDir);
		DoExit();
	}

	/*
	 *  Initial configuration.
	 */
	if (GetBootFiles() == 0)		/* get list of boot files */
		DoExit();
	if (ParseConfig() == 0)			/* parse config file */
		DoExit();

	if (chroot(BootDir) == -1) {
		syslog(LOG_CRIT, "chroot %s: %m", BootDir);
		exit(1);
	}
	if (chdir("/") == -1) {
		syslog(LOG_CRIT, "chdir(\"/\"): %m");
		exit(1);
	}
	if (setgroups(1, &pw->pw_gid) ||
	    setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||
	    setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) {
		syslog(LOG_CRIT, "can't drop privileges: %m");
		exit(1);
	}
	endpwent();

	/*
	 *  Main loop: receive a packet, determine where it came from,
	 *  and if we service this host, call routine to handle request.
	 */
	pfd[0].fd = fd;
	pfd[0].events = POLLIN;
	for (;;) {
		int nsel;

		/*
		 * Check pending actions
		 */
		if (dodebugoff) {
			DoDebugOff();
			dodebugoff = 0;
		}
		if (dodebugon) {
			DoDebugOn();
			dodebugon = 0;
		}
		if (doreconfig) {
			DoReConfig();
			doreconfig = 0;
		}

		nsel = poll(pfd, 1, RmpConns ? RMP_TIMEOUT * 100 : -1);

		if (nsel < 0) {
			if (errno == EINTR)
				continue;
			syslog(LOG_ERR, "poll: %m");
			DoExit();
		} else if (nsel == 0) {		/* timeout */
			DoTimeout();		/* clear stale conns */
			continue;
		}

		if (pfd[0].revents & POLLIN) {
			RMPCONN rconn;
			CLIENT *client;
			int doread = 1;

			while (BpfRead(&rconn, doread)) {
				doread = 0;

				if (DbgFp != NULL)	/* display packet */
					DispPkt(&rconn,DIR_RCVD);

				/*
				 *  If we do not restrict service, set the
				 *  client to NULL (ProcessPacket() handles
				 *  this).  Otherwise, check that we can
				 *  service this host; if not, log a message
				 *  and ignore the packet.
				 */
				if (BootAny) {
					client = NULL;
				} else if ((client=FindClient(&rconn))==NULL) {
					syslog(LOG_INFO,
					    "%s: boot packet ignored",
					    EnetStr(&rconn));
					continue;
				}

				ProcessPacket(&rconn,client);
			}
		}
	}
}

/*
**  DoTimeout -- Free any connections that have timed out.
**
**	Parameters:
**		None.
**
**	Returns:
**		Nothing.
**
**	Side Effects:
**		- Timed out connections in `RmpConns' will be freed.
*/
void
DoTimeout(void)
{
	RMPCONN *rtmp;
	struct timeval now;

	(void) gettimeofday(&now, NULL);

	/*
	 *  For each active connection, if RMP_TIMEOUT seconds have passed
	 *  since the last packet was sent, delete the connection.
	 */
	for (rtmp = RmpConns; rtmp != NULL; rtmp = rtmp->next)
		if ((rtmp->tstamp.tv_sec + RMP_TIMEOUT) < now.tv_sec) {
			syslog(LOG_WARNING, "%s: connection timed out (%u)",
			    EnetStr(rtmp), rtmp->rmp.r_type);
			RemoveConn(rtmp);
		}
}

/*
**  FindClient -- Find client associated with a packet.
**
**	Parameters:
**		rconn - the new packet.
**
**	Returns:
**		Pointer to client info if found, NULL otherwise.
**
**	Side Effects:
**		None.
**
**	Warnings:
**		- This routine must be called with SIGHUP blocked since
**		  a reconfigure can invalidate the information returned.
*/
CLIENT *
FindClient(RMPCONN *rconn)
{
	CLIENT *ctmp;

	for (ctmp = Clients; ctmp != NULL; ctmp = ctmp->next)
		if (bcmp((char *)&rconn->rmp.hp_hdr.saddr[0],
		    (char *)&ctmp->addr[0], RMP_ADDRLEN) == 0)
			break;

	return(ctmp);
}

/*
**  Exit -- Log an error message and exit.
**
**	Parameters:
**		sig - caught signal (or zero if not dying on a signal).
**
**	Returns:
**		Does not return.
**
**	Side Effects:
**		- This process ceases to exist.
*/
void
Exit(int sig)
{
	struct syslog_data sdata = SYSLOG_DATA_INIT;

	syslog_r(LOG_ERR, &sdata, "going down on signal %d", sig);
	_exit(1);
}

void
DoExit(void)
{
	syslog(LOG_ERR, "going down on fatal error");
	exit(1);
}

/*
**  ReConfig -- Get new list of boot files and reread config files.
**
**	Parameters:
**		None.
**
**	Returns:
**		Nothing.
**
**	Side Effects:
**		- All active connections are dropped.
**		- List of bootable files is changed.
**		- List of clients is changed.
**
**	Warnings:
**		- This routine must be called with SIGHUP blocked.
*/
void
ReConfig(int signo)
{
	doreconfig = 1;
}

void
DoReConfig(void)
{
	syslog(LOG_NOTICE, "reconfiguring boot server");

	FreeConns();

	if (GetBootFiles() == 0)
		DoExit();

	if (ParseConfig() == 0)
		DoExit();
}

/*
**  DebugOff -- Turn off debugging.
**
**	Parameters:
**		None.
**
**	Returns:
**		Nothing.
**
**	Side Effects:
**		- Debug file is closed.
*/
void
DebugOff(int signo)
{
	dodebugoff = 1;
}

void
DoDebugOff(void)
{
	if (DbgFp != NULL)
		(void) fclose(DbgFp);

	DbgFp = NULL;
}

/*
**  DebugOn -- Turn on debugging.
**
**	Parameters:
**		None.
**
**	Returns:
**		Nothing.
**
**	Side Effects:
**		- Debug file is opened/truncated if not already opened,
**		  otherwise do nothing.
*/
void
DebugOn(int signo)
{
	dodebugon = 1;
}

void
DoDebugOn(void)
{
	if (DbgFp == NULL) {
		if ((DbgFp = fopen(DbgFile, "w")) == NULL)
			syslog(LOG_ERR, "can't open debug file (%s)", DbgFile);
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: rbootd.c,v 1.31 2016/05/29 02:19:02 guenther Exp $ */
2			/* $NetBSD: rbootd.c,v 1.5 1995/10/06 05:12:17 thorpej Exp $ */
3
4			/*
5			* Copyright (c) 1988, 1992 The University of Utah and the Center
6			* for Software Science (CSS).
7			* Copyright (c) 1992, 1993
8			* The Regents of the University of California. All rights reserved.
9			*
10			* This code is derived from software contributed to Berkeley by
11			* the Center for Software Science of the University of Utah Computer
12			* Science Department. CSS requests users of this software to return
13			* to css-dist@cs.utah.edu any improvements that they make and grant
14			* CSS redistribution rights.
15			*
16			* Redistribution and use in source and binary forms, with or without
17			* modification, are permitted provided that the following conditions
18			* are met:
19			* 1. Redistributions of source code must retain the above copyright
20			* notice, this list of conditions and the following disclaimer.
21			* 2. Redistributions in binary form must reproduce the above copyright
22			* notice, this list of conditions and the following disclaimer in the
23			* documentation and/or other materials provided with the distribution.
24			* 3. Neither the name of the University nor the names of its contributors
25			* may be used to endorse or promote products derived from this software
26			* without specific prior written permission.
27			*
28			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38			* SUCH DAMAGE.
39			*
40			* from: @(#)rbootd.c 8.1 (Berkeley) 6/4/93
41			*
42			* From: Utah Hdr: rbootd.c 3.1 92/07/06
43			* Author: Jeff Forys, University of Utah CSS
44			*/
45
46			#include <sys/time.h>
47
48			#include <err.h>
49			#include <errno.h>
50			#include <signal.h>
51			#include <stdio.h>
52			#include <stdlib.h>
53			#include <string.h>
54			#include <syslog.h>
55			#include <unistd.h>
56			#include <limits.h>
57			#include <pwd.h>
58			#include <poll.h>
59
60			#include "defs.h"
61
62			extern char __progname; / from crt0.o */
63
64			volatile sig_atomic_t dodebugoff;
65			volatile sig_atomic_t dodebugon;
66			volatile sig_atomic_t doreconfig;
67
68			void DebugOff(int);
69			void DebugOn(int);
70			void ReConfig(int);
71			void Exit(int);
72
73			void DoDebugOff(void);
74			void DoDebugOn(void);
75			void DoReConfig(void);
76
77			void DoTimeout(void);
78			CLIENT FindClient(RMPCONN );
79
80			int
81			main(int argc, char *argv[])
82			{
83			int c, fd;
84			struct passwd *pw;
85			struct pollfd pfd[1];
86
87			closefrom(STDERR_FILENO + 1);
88
89			if ((pw = getpwnam("_rbootd")) == NULL)
90			err(1, "getpwnam");
91
92			while ((c = getopt(argc, argv, "adi:")) != -1)
93			switch (c) {
94			case 'a':
95			BootAny++;
96			break;
97			case 'd':
98			DebugFlg++;
99			break;
100			case 'i':
101			IntfName = optarg;
102			break;
103			}
104			for (; optind < argc; optind++) {
105			if (ConfigFile == NULL)
106			ConfigFile = argv[optind];
107			else {
108			warnx("too many config files (`%s' ignored)",
109			argv[optind]);
110			}
111			}
112
113			if (ConfigFile == NULL) /* use default config file */
114			ConfigFile = DfltConfig;
115
116			if (DebugFlg) {
117			DbgFp = stdout; /* output to stdout */
118
119			(void) signal(SIGUSR1, SIG_IGN); /* dont muck w/DbgFp */
120			(void) signal(SIGUSR2, SIG_IGN);
121			(void) fclose(stderr); /* finished with it */
122			} else {
123			if (daemon(0, 0))
124			err(1, "can't detach from terminal");
125
126			(void) signal(SIGUSR1, DebugOn);
127			(void) signal(SIGUSR2, DebugOff);
128			}
129
130			/*
131			* If no interface was specified, get one now.
132			*
133			* This is convoluted because we want to get the default interface
134			* name for the syslog("restarted") message. If BpfGetIntfName()
135			* runs into an error, it will return a syslog-able error message
136			* (in `errmsg') which will be displayed here.
137			*/
138			if (IntfName == NULL) {
139			char *errmsg;
140
141			if ((IntfName = BpfGetIntfName(&errmsg)) == NULL) {
142			/* BpfGetIntfName() returns safe names, using %m */
143			syslog(LOG_ERR, "%s", errmsg);
144			DoExit();
145			}
146			}
147
148			openlog(__progname, LOG_PID, LOG_DAEMON);
149			fd = BpfOpen();
150			syslog(LOG_NOTICE, "restarted (%s)", IntfName);
151
152			(void) signal(SIGHUP, ReConfig);
153			(void) signal(SIGINT, Exit);
154			(void) signal(SIGTERM, Exit);
155
156			gethostname(MyHost, HOST_NAME_MAX+1);
157
158			/*
159			* All boot files are relative to the boot directory, we might
160			* as well chdir() there to make life easier.
161			*/
162			if (chdir(BootDir) < 0) {
163			syslog(LOG_ERR, "chdir: %m (%s)", BootDir);
164			DoExit();
165			}
166
167			/*
168			* Initial configuration.
169			*/
170			if (GetBootFiles() == 0) /* get list of boot files */
171			DoExit();
172			if (ParseConfig() == 0) /* parse config file */
173			DoExit();
174
175			if (chroot(BootDir) == -1) {
176			syslog(LOG_CRIT, "chroot %s: %m", BootDir);
177			exit(1);
178			}
179			if (chdir("/") == -1) {
180			syslog(LOG_CRIT, "chdir(\"/\"): %m");
181			exit(1);
182			}
183			if (setgroups(1, &pw->pw_gid) \|\|
184			setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) \|\|
185			setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) {
186			syslog(LOG_CRIT, "can't drop privileges: %m");
187			exit(1);
188			}
189			endpwent();
190
191			/*
192			* Main loop: receive a packet, determine where it came from,
193			* and if we service this host, call routine to handle request.
194			*/
195			pfd[0].fd = fd;
196			pfd[0].events = POLLIN;
197			for (;;) {
198			int nsel;
199
200			/*
201			* Check pending actions
202			*/
203			if (dodebugoff) {
204			DoDebugOff();
205			dodebugoff = 0;
206			}
207			if (dodebugon) {
208			DoDebugOn();
209			dodebugon = 0;
210			}
211			if (doreconfig) {
212			DoReConfig();
213			doreconfig = 0;
214			}
215
216			nsel = poll(pfd, 1, RmpConns ? RMP_TIMEOUT * 100 : -1);
217
218			if (nsel < 0) {
219			if (errno == EINTR)
220			continue;
221			syslog(LOG_ERR, "poll: %m");
222			DoExit();
223			} else if (nsel == 0) { /* timeout */
224			DoTimeout(); /* clear stale conns */
225			continue;
226			}
227
228			if (pfd[0].revents & POLLIN) {
229			RMPCONN rconn;
230			CLIENT *client;
231			int doread = 1;
232
233			while (BpfRead(&rconn, doread)) {
234			doread = 0;
235
236			if (DbgFp != NULL) /* display packet */
237			DispPkt(&rconn,DIR_RCVD);
238
239			/*
240			* If we do not restrict service, set the
241			* client to NULL (ProcessPacket() handles
242			* this). Otherwise, check that we can
243			* service this host; if not, log a message
244			* and ignore the packet.
245			*/
246			if (BootAny) {
247			client = NULL;
248			} else if ((client=FindClient(&rconn))==NULL) {
249			syslog(LOG_INFO,
250			"%s: boot packet ignored",
251			EnetStr(&rconn));
252			continue;
253			}
254
255			ProcessPacket(&rconn,client);
256			}
257			}
258			}
259			}
260
261			/*
262			** DoTimeout -- Free any connections that have timed out.
263			**
264			** Parameters:
265			** None.
266			**
267			** Returns:
268			** Nothing.
269			**
270			** Side Effects:
271			** - Timed out connections in `RmpConns' will be freed.
272			*/
273			void
274			DoTimeout(void)
275			{
276			RMPCONN *rtmp;
277			struct timeval now;
278
279			(void) gettimeofday(&now, NULL);
280
281			/*
282			* For each active connection, if RMP_TIMEOUT seconds have passed
283			* since the last packet was sent, delete the connection.
284			*/
285			for (rtmp = RmpConns; rtmp != NULL; rtmp = rtmp->next)
286			if ((rtmp->tstamp.tv_sec + RMP_TIMEOUT) < now.tv_sec) {
287			syslog(LOG_WARNING, "%s: connection timed out (%u)",
288			EnetStr(rtmp), rtmp->rmp.r_type);
289			RemoveConn(rtmp);
290			}
291			}
292
293			/*
294			** FindClient -- Find client associated with a packet.
295			**
296			** Parameters:
297			** rconn - the new packet.
298			**
299			** Returns:
300			** Pointer to client info if found, NULL otherwise.
301			**
302			** Side Effects:
303			** None.
304			**
305			** Warnings:
306			** - This routine must be called with SIGHUP blocked since
307			** a reconfigure can invalidate the information returned.
308			*/
309			CLIENT *
310			FindClient(RMPCONN *rconn)
311			{
312			CLIENT *ctmp;
313
314			for (ctmp = Clients; ctmp != NULL; ctmp = ctmp->next)
315			if (bcmp((char *)&rconn->rmp.hp_hdr.saddr[0],
316			(char *)&ctmp->addr[0], RMP_ADDRLEN) == 0)
317			break;
318
319			return(ctmp);
320			}
321
322			/*
323			** Exit -- Log an error message and exit.
324			**
325			** Parameters:
326			** sig - caught signal (or zero if not dying on a signal).
327			**
328			** Returns:
329			** Does not return.
330			**
331			** Side Effects:
332			** - This process ceases to exist.
333			*/
334			void
335			Exit(int sig)
336			{
337			struct syslog_data sdata = SYSLOG_DATA_INIT;
338
339			syslog_r(LOG_ERR, &sdata, "going down on signal %d", sig);
340			_exit(1);
341			}
342
343			void
344			DoExit(void)
345			{
346			syslog(LOG_ERR, "going down on fatal error");
347			exit(1);
348			}
349
350			/*
351			** ReConfig -- Get new list of boot files and reread config files.
352			**
353			** Parameters:
354			** None.
355			**
356			** Returns:
357			** Nothing.
358			**
359			** Side Effects:
360			** - All active connections are dropped.
361			** - List of bootable files is changed.
362			** - List of clients is changed.
363			**
364			** Warnings:
365			** - This routine must be called with SIGHUP blocked.
366			*/
367			void
368			ReConfig(int signo)
369			{
370			doreconfig = 1;
371			}
372
373			void
374			DoReConfig(void)
375			{
376			syslog(LOG_NOTICE, "reconfiguring boot server");
377
378			FreeConns();
379
380			if (GetBootFiles() == 0)
381			DoExit();
382
383			if (ParseConfig() == 0)
384			DoExit();
385			}
386
387			/*
388			** DebugOff -- Turn off debugging.
389			**
390			** Parameters:
391			** None.
392			**
393			** Returns:
394			** Nothing.
395			**
396			** Side Effects:
397			** - Debug file is closed.
398			*/
399			void
400			DebugOff(int signo)
401			{
402			dodebugoff = 1;
403			}
404
405			void
406			DoDebugOff(void)
407			{
408			if (DbgFp != NULL)
409			(void) fclose(DbgFp);
410
411			DbgFp = NULL;
412			}
413
414			/*
415			** DebugOn -- Turn on debugging.
416			**
417			** Parameters:
418			** None.
419			**
420			** Returns:
421			** Nothing.
422			**
423			** Side Effects:
424			** - Debug file is opened/truncated if not already opened,
425			** otherwise do nothing.
426			*/
427			void
428			DebugOn(int signo)
429			{
430			dodebugon = 1;
431			}
432
433			void
434			DoDebugOn(void)
435			{
436			if (DbgFp == NULL) {
437			if ((DbgFp = fopen(DbgFile, "w")) == NULL)
438			syslog(LOG_ERR, "can't open debug file (%s)", DbgFile);
439			}
440			}