Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/systat/main.c	Lines:	0	206	0.0 %
Date:	2016-12-06	Branches:	0	115	0.0 %


/* $Id: main.c,v 1.64 2016/01/02 15:02:05 benno Exp $	 */
/*
 * Copyright (c) 2001, 2007 Can Erkin Acar
 * Copyright (c) 2001 Daniel Hartmeier
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *    - Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    - 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
 * COPYRIGHT HOLDERS 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 <sys/types.h>
#include <sys/sysctl.h>


#include <ctype.h>
#include <curses.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <netdb.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <utmp.h>

#include "engine.h"
#include "systat.h"

#define TIMEPOS 55

double	dellave;

kvm_t	*kd;
char	*nlistf = NULL;
char	*memf = NULL;
double	avenrun[3];
double	naptime = 5.0;
int	verbose = 1;		/* to report kvm read errs */
int	nflag = 1;
int	ut, hz, stathz;
char    hostname[HOST_NAME_MAX+1];
WINDOW  *wnd;
int	CMDLINE;
char	timebuf[26];
char	uloadbuf[TIMEPOS];


int  ucount(void);
void usage(void);

/* command prompt */

void cmd_delay(const char *);
void cmd_count(const char *);
void cmd_compat(const char *);

struct command cm_compat = {"Command", cmd_compat};
struct command cm_delay = {"Seconds to delay", cmd_delay};
struct command cm_count = {"Number of lines to display", cmd_count};


/* display functions */

int
print_header(void)
{
	time_t now;
	int start = dispstart + 1, end = dispstart + maxprint;
	char tmpbuf[TIMEPOS];
	char header[MAX_LINE_BUF];

	if (end > num_disp)
		end = num_disp;

	tb_start();

	if (!paused) {
		getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0]));

		snprintf(uloadbuf, sizeof(uloadbuf),
		    "%5d users    Load %.2f %.2f %.2f",
		    ucount(), avenrun[0], avenrun[1], avenrun[2]);

		time(&now);
		strlcpy(timebuf, ctime(&now), sizeof(timebuf));
	}

	if (num_disp && (start > 1 || end != num_disp))
		snprintf(tmpbuf, sizeof(tmpbuf),
		    "%s (%u-%u of %u) %s", uloadbuf, start, end, num_disp,
		    paused ? "PAUSED" : "");
	else
		snprintf(tmpbuf, sizeof(tmpbuf),
		    "%s %s", uloadbuf,
		    paused ? "PAUSED" : "");

	snprintf(header, sizeof(header), "%-55s%s", tmpbuf, timebuf);

	if (rawmode)
		printf("\n\n%s\n", header);
	else
		mvprintw(0, 0, "%s", header);

	return (1);
}

/* compatibility functions, rearrange later */
void
error(const char *fmt, ...)
{
	va_list ap;
	char buf[MAX_LINE_BUF];

	va_start(ap, fmt);
	vsnprintf(buf, sizeof buf, fmt, ap);
	va_end(ap);

	message_set(buf);
}

void
nlisterr(struct nlist namelist[])
{
	int i, n;

	n = 0;
	clear();
	mvprintw(2, 10, "systat: nlist: can't find following symbols:");
	for (i = 0;
	    namelist[i].n_name != NULL && *namelist[i].n_name != '\0'; i++)
		if (namelist[i].n_value == 0)
			mvprintw(2 + ++n, 10, "%s", namelist[i].n_name);
	move(CMDLINE, 0);
	clrtoeol();
	refresh();
	endwin();
	exit(1);
}

void
die(void)
{
	if (!rawmode)
		endwin();
	exit(0);
}


int
prefix(char *s1, char *s2)
{

	while (*s1 == *s2) {
		if (*s1 == '\0')
			return (1);
		s1++, s2++;
	}
	return (*s1 == '\0');
}

/* calculate number of users on the system */
int
ucount(void)
{
	int nusers = 0;
	struct	utmp utmp;

	if (ut < 0)
		return (0);
	lseek(ut, (off_t)0, SEEK_SET);
	while (read(ut, &utmp, sizeof(utmp)))
		if (utmp.ut_name[0] != '\0')
			nusers++;

	return (nusers);
}

/* main program functions */

void
usage(void)
{
	extern char *__progname;
	fprintf(stderr, "usage: %s [-aBbiNn] [-d count] "
	    "[-s delay] [-w width] [view] [delay]\n", __progname);
	exit(1);
}

void
show_view(void)
{
	if (rawmode)
		return;

	tb_start();
	tbprintf("%s %g", curr_view->name, naptime);
	tb_end();
	message_set(tmp_buf);
}

void
add_view_tb(field_view *v)
{
	if (curr_view == v)
		tbprintf("[%s] ", v->name);
	else
		tbprintf("%s ", v->name);
}

void
show_help(void)
{
	if (rawmode)
		return;

	tb_start();
	foreach_view(add_view_tb);
	tb_end();
	message_set(tmp_buf);
}

void
cmd_compat(const char *buf)
{
	const char *s;

	if (strcasecmp(buf, "help") == 0) {
		show_help();
		need_update = 1;
		return;
	}
	if (strcasecmp(buf, "quit") == 0 || strcasecmp(buf, "q") == 0) {
		gotsig_close = 1;
		return;
	}
	if (strcasecmp(buf, "stop") == 0) {
		paused = 1;
		gotsig_alarm = 1;
		return;
	}
	if (strncasecmp(buf, "start", 5) == 0) {
		paused = 0;
		gotsig_alarm = 1;
		cmd_delay(buf + 5);
		return;
	}

	for (s = buf; *s && strchr("0123456789+-.eE", *s) != NULL; s++)
		;
	if (*s) {
		if (set_view(buf))
			error("Invalid/ambiguous view: %s", buf);
	} else
		cmd_delay(buf);
}

void
cmd_delay(const char *buf)
{
	double del;
	del = atof(buf);

	if (del > 0) {
		udelay = (useconds_t)(del * 1000000);
		gotsig_alarm = 1;
		naptime = del;
	}
}

void
cmd_count(const char *buf)
{
	const char *errstr;

	maxprint = strtonum(buf, 1, lines - HEADER_LINES, &errstr);
	if (errstr)
		maxprint = lines - HEADER_LINES;
}


int
keyboard_callback(int ch)
{
	switch (ch) {
	case '?':
		/* FALLTHROUGH */
	case 'h':
		show_help();
		need_update = 1;
		break;
	case CTRL_G:
		show_view();
		need_update = 1;
		break;
	case 'l':
		command_set(&cm_count, NULL);
		break;
	case 's':
		command_set(&cm_delay, NULL);
		break;
	case ',':
		separate_thousands = !separate_thousands;
		gotsig_alarm = 1;
		break;
	case ':':
		command_set(&cm_compat, NULL);
		break;
	default:
		return 0;
	};

	return 1;
}

void
initialize(void)
{
	engine_initialize();

	initvmstat();
	initpigs();
	initifstat();
	initiostat();
	initsensors();
	initmembufs();
	initnetstat();
	initswap();
	initpftop();
	initpf();
	initpool();
	initmalloc();
	initnfs();
	initcpu();
}

void
gethz(void)
{
	struct clockinfo cinf;
	size_t  size = sizeof(cinf);
	int	mib[2];

	mib[0] = CTL_KERN;
	mib[1] = KERN_CLOCKRATE;
	if (sysctl(mib, 2, &cinf, &size, NULL, 0) == -1)
		return;
	stathz = cinf.stathz;
	hz = cinf.hz;
}

int
main(int argc, char *argv[])
{
	char errbuf[_POSIX2_LINE_MAX];
	const char *errstr;
	extern char *optarg;
	extern int optind;
	double delay = 5;

	char *viewstr = NULL;

	gid_t gid;
	int countmax = 0;
	int maxlines = 0;

	int ch;

	ut = open(_PATH_UTMP, O_RDONLY);
	if (ut < 0) {
		warn("No utmp");
	}

	kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);

	gid = getgid();
	if (setresgid(gid, gid, gid) == -1)
		err(1, "setresgid");

	while ((ch = getopt(argc, argv, "BNabd:ins:w:")) != -1) {
		switch (ch) {
		case 'a':
			maxlines = -1;
			break;
		case 'B':
			averageonly = 1;
			if (countmax < 2)
				countmax = 2;
			/* FALLTHROUGH */
		case 'b':
			rawmode = 1;
			interactive = 0;
			break;
		case 'd':
			countmax = strtonum(optarg, 1, INT_MAX, &errstr);
			if (errstr)
				errx(1, "-d %s: %s", optarg, errstr);
			break;
		case 'i':
			interactive = 1;
			break;
		case 'N':
			nflag = 0;
			break;
		case 'n':
			/* this is a noop, -n is the default */
			nflag = 1;
			break;
		case 's':
			delay = atof(optarg);
			if (delay <= 0)
				delay = 5;
			break;
		case 'w':
			rawwidth = strtonum(optarg, 1, MAX_LINE_BUF-1, &errstr);
			if (errstr)
				errx(1, "-w %s: %s", optarg, errstr);
			break;
		default:
			usage();
			/* NOTREACHED */
		}
	}

	if (kd == NULL)
		warnx("kvm_openfiles: %s", errbuf);

	argc -= optind;
	argv += optind;

	if (argc == 1) {
		double del = atof(argv[0]);
		if (del == 0)
			viewstr = argv[0];
		else
			delay = del;
	} else if (argc == 2) {
		viewstr = argv[0];
		delay = atof(argv[1]);
		if (delay <= 0)
			delay = 5;
	}

	udelay = (useconds_t)(delay * 1000000.0);
	if (udelay < 1)
		udelay = 1;

	naptime = (double)udelay / 1000000.0;

	gethostname(hostname, sizeof (hostname));
	gethz();

	initialize();

	set_order(NULL);
	if (viewstr && set_view(viewstr)) {
		fprintf(stderr, "Unknown/ambiguous view name: %s\n", viewstr);
		return 1;
	}

	if (check_termcap()) {
		rawmode = 1;
		interactive = 0;
	}

	setup_term(maxlines);

	if (rawmode && countmax == 0)
		countmax = 1;

	gotsig_alarm = 1;

	engine_loop(countmax);

	return 0;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $Id: main.c,v 1.64 2016/01/02 15:02:05 benno Exp $ */
2			/*
3			* Copyright (c) 2001, 2007 Can Erkin Acar
4			* Copyright (c) 2001 Daniel Hartmeier
5			* All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions
9			* are met:
10			*
11			* - Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* - Redistributions in binary form must reproduce the above
14			* copyright notice, this list of conditions and the following
15			* disclaimer in the documentation and/or other materials provided
16			* with the distribution.
17			*
18			* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19			* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20			* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21			* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22			* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24			* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26			* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28			* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29			* POSSIBILITY OF SUCH DAMAGE.
30			*
31			*/
32
33			#include <sys/types.h>
34			#include <sys/sysctl.h>
35
36
37			#include <ctype.h>
38			#include <curses.h>
39			#include <err.h>
40			#include <errno.h>
41			#include <fcntl.h>
42			#include <limits.h>
43			#include <netdb.h>
44			#include <signal.h>
45			#include <stdio.h>
46			#include <stdlib.h>
47			#include <string.h>
48			#include <stdarg.h>
49			#include <unistd.h>
50			#include <utmp.h>
51
52			#include "engine.h"
53			#include "systat.h"
54
55			#define TIMEPOS 55
56
57			double dellave;
58
59			kvm_t *kd;
60			char *nlistf = NULL;
61			char *memf = NULL;
62			double avenrun[3];
63			double naptime = 5.0;
64			int verbose = 1; /* to report kvm read errs */
65			int nflag = 1;
66			int ut, hz, stathz;
67			char hostname[HOST_NAME_MAX+1];
68			WINDOW *wnd;
69			int CMDLINE;
70			char timebuf[26];
71			char uloadbuf[TIMEPOS];
72
73
74			int ucount(void);
75			void usage(void);
76
77			/* command prompt */
78
79			void cmd_delay(const char *);
80			void cmd_count(const char *);
81			void cmd_compat(const char *);
82
83			struct command cm_compat = {"Command", cmd_compat};
84			struct command cm_delay = {"Seconds to delay", cmd_delay};
85			struct command cm_count = {"Number of lines to display", cmd_count};
86
87
88			/* display functions */
89
90			int
91			print_header(void)
92			{
93			time_t now;
94			int start = dispstart + 1, end = dispstart + maxprint;
95			char tmpbuf[TIMEPOS];
96			char header[MAX_LINE_BUF];
97
98			if (end > num_disp)
99			end = num_disp;
100
101			tb_start();
102
103			if (!paused) {
104			getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0]));
105
106			snprintf(uloadbuf, sizeof(uloadbuf),
107			"%5d users Load %.2f %.2f %.2f",
108			ucount(), avenrun[0], avenrun[1], avenrun[2]);
109
110			time(&now);
111			strlcpy(timebuf, ctime(&now), sizeof(timebuf));
112			}
113
114			if (num_disp && (start > 1 \|\| end != num_disp))
115			snprintf(tmpbuf, sizeof(tmpbuf),
116			"%s (%u-%u of %u) %s", uloadbuf, start, end, num_disp,
117			paused ? "PAUSED" : "");
118			else
119			snprintf(tmpbuf, sizeof(tmpbuf),
120			"%s %s", uloadbuf,
121			paused ? "PAUSED" : "");
122
123			snprintf(header, sizeof(header), "%-55s%s", tmpbuf, timebuf);
124
125			if (rawmode)
126			printf("\n\n%s\n", header);
127			else
128			mvprintw(0, 0, "%s", header);
129
130			return (1);
131			}
132
133			/* compatibility functions, rearrange later */
134			void
135			error(const char *fmt, ...)
136			{
137			va_list ap;
138			char buf[MAX_LINE_BUF];
139
140			va_start(ap, fmt);
141			vsnprintf(buf, sizeof buf, fmt, ap);
142			va_end(ap);
143
144			message_set(buf);
145			}
146
147			void
148			nlisterr(struct nlist namelist[])
149			{
150			int i, n;
151
152			n = 0;
153			clear();
154			mvprintw(2, 10, "systat: nlist: can't find following symbols:");
155			for (i = 0;
156			namelist[i].n_name != NULL && *namelist[i].n_name != '\0'; i++)
157			if (namelist[i].n_value == 0)
158			mvprintw(2 + ++n, 10, "%s", namelist[i].n_name);
159			move(CMDLINE, 0);
160			clrtoeol();
161			refresh();
162			endwin();
163			exit(1);
164			}
165
166			void
167			die(void)
168			{
169			if (!rawmode)
170			endwin();
171			exit(0);
172			}
173
174
175			int
176			prefix(char s1, char s2)
177			{
178
179			while (s1 == s2) {
180			if (*s1 == '\0')
181			return (1);
182			s1++, s2++;
183			}
184			return (*s1 == '\0');
185			}
186
187			/* calculate number of users on the system */
188			int
189			ucount(void)
190			{
191			int nusers = 0;
192			struct utmp utmp;
193
194			if (ut < 0)
195			return (0);
196			lseek(ut, (off_t)0, SEEK_SET);
197			while (read(ut, &utmp, sizeof(utmp)))
198			if (utmp.ut_name[0] != '\0')
199			nusers++;
200
201			return (nusers);
202			}
203
204			/* main program functions */
205
206			void
207			usage(void)
208			{
209			extern char *__progname;
210			fprintf(stderr, "usage: %s [-aBbiNn] [-d count] "
211			"[-s delay] [-w width] [view] [delay]\n", __progname);
212			exit(1);
213			}
214
215			void
216			show_view(void)
217			{
218			if (rawmode)
219			return;
220
221			tb_start();
222			tbprintf("%s %g", curr_view->name, naptime);
223			tb_end();
224			message_set(tmp_buf);
225			}
226
227			void
228			add_view_tb(field_view *v)
229			{
230			if (curr_view == v)
231			tbprintf("[%s] ", v->name);
232			else
233			tbprintf("%s ", v->name);
234			}
235
236			void
237			show_help(void)
238			{
239			if (rawmode)
240			return;
241
242			tb_start();
243			foreach_view(add_view_tb);
244			tb_end();
245			message_set(tmp_buf);
246			}
247
248			void
249			cmd_compat(const char *buf)
250			{
251			const char *s;
252
253			if (strcasecmp(buf, "help") == 0) {
254			show_help();
255			need_update = 1;
256			return;
257			}
258			if (strcasecmp(buf, "quit") == 0 \|\| strcasecmp(buf, "q") == 0) {
259			gotsig_close = 1;
260			return;
261			}
262			if (strcasecmp(buf, "stop") == 0) {
263			paused = 1;
264			gotsig_alarm = 1;
265			return;
266			}
267			if (strncasecmp(buf, "start", 5) == 0) {
268			paused = 0;
269			gotsig_alarm = 1;
270			cmd_delay(buf + 5);
271			return;
272			}
273
274			for (s = buf; s && strchr("0123456789+-.eE", s) != NULL; s++)
275			;
276			if (*s) {
277			if (set_view(buf))
278			error("Invalid/ambiguous view: %s", buf);
279			} else
280			cmd_delay(buf);
281			}
282
283			void
284			cmd_delay(const char *buf)
285			{
286			double del;
287			del = atof(buf);
288
289			if (del > 0) {
290			udelay = (useconds_t)(del * 1000000);
291			gotsig_alarm = 1;
292			naptime = del;
293			}
294			}
295
296			void
297			cmd_count(const char *buf)
298			{
299			const char *errstr;
300
301			maxprint = strtonum(buf, 1, lines - HEADER_LINES, &errstr);
302			if (errstr)
303			maxprint = lines - HEADER_LINES;
304			}
305
306
307			int
308			keyboard_callback(int ch)
309			{
310			switch (ch) {
311			case '?':
312			/* FALLTHROUGH */
313			case 'h':
314			show_help();
315			need_update = 1;
316			break;
317			case CTRL_G:
318			show_view();
319			need_update = 1;
320			break;
321			case 'l':
322			command_set(&cm_count, NULL);
323			break;
324			case 's':
325			command_set(&cm_delay, NULL);
326			break;
327			case ',':
328			separate_thousands = !separate_thousands;
329			gotsig_alarm = 1;
330			break;
331			case ':':
332			command_set(&cm_compat, NULL);
333			break;
334			default:
335			return 0;
336			};
337
338			return 1;
339			}
340
341			void
342			initialize(void)
343			{
344			engine_initialize();
345
346			initvmstat();
347			initpigs();
348			initifstat();
349			initiostat();
350			initsensors();
351			initmembufs();
352			initnetstat();
353			initswap();
354			initpftop();
355			initpf();
356			initpool();
357			initmalloc();
358			initnfs();
359			initcpu();
360			}
361
362			void
363			gethz(void)
364			{
365			struct clockinfo cinf;
366			size_t size = sizeof(cinf);
367			int mib[2];
368
369			mib[0] = CTL_KERN;
370			mib[1] = KERN_CLOCKRATE;
371			if (sysctl(mib, 2, &cinf, &size, NULL, 0) == -1)
372			return;
373			stathz = cinf.stathz;
374			hz = cinf.hz;
375			}
376
377			int
378			main(int argc, char *argv[])
379			{
380			char errbuf[_POSIX2_LINE_MAX];
381			const char *errstr;
382			extern char *optarg;
383			extern int optind;
384			double delay = 5;
385
386			char *viewstr = NULL;
387
388			gid_t gid;
389			int countmax = 0;
390			int maxlines = 0;
391
392			int ch;
393
394			ut = open(_PATH_UTMP, O_RDONLY);
395			if (ut < 0) {
396			warn("No utmp");
397			}
398
399			kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
400
401			gid = getgid();
402			if (setresgid(gid, gid, gid) == -1)
403			err(1, "setresgid");
404
405			while ((ch = getopt(argc, argv, "BNabd:ins:w:")) != -1) {
406			switch (ch) {
407			case 'a':
408			maxlines = -1;
409			break;
410			case 'B':
411			averageonly = 1;
412			if (countmax < 2)
413			countmax = 2;
414			/* FALLTHROUGH */
415			case 'b':
416			rawmode = 1;
417			interactive = 0;
418			break;
419			case 'd':
420			countmax = strtonum(optarg, 1, INT_MAX, &errstr);
421			if (errstr)
422			errx(1, "-d %s: %s", optarg, errstr);
423			break;
424			case 'i':
425			interactive = 1;
426			break;
427			case 'N':
428			nflag = 0;
429			break;
430			case 'n':
431			/* this is a noop, -n is the default */
432			nflag = 1;
433			break;
434			case 's':
435			delay = atof(optarg);
436			if (delay <= 0)
437			delay = 5;
438			break;
439			case 'w':
440			rawwidth = strtonum(optarg, 1, MAX_LINE_BUF-1, &errstr);
441			if (errstr)
442			errx(1, "-w %s: %s", optarg, errstr);
443			break;
444			default:
445			usage();
446			/* NOTREACHED */
447			}
448			}
449
450			if (kd == NULL)
451			warnx("kvm_openfiles: %s", errbuf);
452
453			argc -= optind;
454			argv += optind;
455
456			if (argc == 1) {
457			double del = atof(argv[0]);
458			if (del == 0)
459			viewstr = argv[0];
460			else
461			delay = del;
462			} else if (argc == 2) {
463			viewstr = argv[0];
464			delay = atof(argv[1]);
465			if (delay <= 0)
466			delay = 5;
467			}
468
469			udelay = (useconds_t)(delay * 1000000.0);
470			if (udelay < 1)
471			udelay = 1;
472
473			naptime = (double)udelay / 1000000.0;
474
475			gethostname(hostname, sizeof (hostname));
476			gethz();
477
478			initialize();
479
480			set_order(NULL);
481			if (viewstr && set_view(viewstr)) {
482			fprintf(stderr, "Unknown/ambiguous view name: %s\n", viewstr);
483			return 1;
484			}
485
486			if (check_termcap()) {
487			rawmode = 1;
488			interactive = 0;
489			}
490
491			setup_term(maxlines);
492
493			if (rawmode && countmax == 0)
494			countmax = 1;
495
496			gotsig_alarm = 1;
497
498			engine_loop(countmax);
499
500			return 0;
501			}