initial import of NetBSD tree

1 files changed, 296 insertions, 0 deletions

diff --git a/usr.bin/systat/main.c b/usr.bin/systat/main.c
new file mode 100644
index 00000000000..49929243a37
--- /dev/null
+++ b/usr.bin/systat/main.c
@@ -0,0 +1,296 @@
+/*	$NetBSD: main.c,v 1.6 1995/05/06 06:25:07 jtc Exp $	*/
+
+/*-
+ * Copyright (c) 1980, 1992, 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1980, 1992, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 6/6/93";
+#endif
+static char rcsid[] = "$NetBSD: main.c,v 1.6 1995/05/06 06:25:07 jtc Exp $";
+#endif /* not lint */
+
+#include <sys/param.h>
+
+#include <err.h>
+#include <nlist.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "systat.h"
+#include "extern.h"
+
+static struct nlist namelist[] = {
+#define X_FIRST		0
+#define	X_HZ		0
+	{ "_hz" },
+#define	X_STATHZ		1
+	{ "_stathz" },
+	{ "" }
+};
+static int     dellave;
+
+kvm_t *kd;
+sig_t	sigtstpdfl;
+double avenrun[3];
+int     col;
+int	naptime = 5;
+int     verbose = 1;                    /* to report kvm read errs */
+int     hz, stathz;
+char    c;
+char    *namp;
+char    hostname[MAXHOSTNAMELEN];
+WINDOW  *wnd;
+int     CMDLINE;
+
+static	WINDOW *wload;			/* one line window for load average */
+
+void
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	char errbuf[80];
+
+	argc--, argv++;
+	while (argc > 0) {
+		if (argv[0][0] == '-') {
+			struct cmdtab *p;
+
+			p = lookup(&argv[0][1]);
+			if (p == (struct cmdtab *)-1)
+				errx(1, "ambiguous request: %s", &argv[0][1]);
+			if (p == 0)
+				errx(1, "unknown request: %s", &argv[0][1]);
+			curcmd = p;
+		} else {
+			naptime = atoi(argv[0]);
+			if (naptime <= 0)
+				naptime = 5;
+		}
+		argc--, argv++;
+	}
+	kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf);
+	if (kd == NULL) {
+		error("%s", errbuf);
+		exit(1);
+	}
+	if (kvm_nlist(kd, namelist)) {
+		nlisterr(namelist);
+		exit(1);
+	}
+	if (namelist[X_FIRST].n_type == 0)
+		errx(1, "couldn't read namelist");
+	signal(SIGINT, die);
+	signal(SIGQUIT, die);
+	signal(SIGTERM, die);
+
+	/*
+	 * Initialize display.  Load average appears in a one line
+	 * window of its own.  Current command's display appears in
+	 * an overlapping sub-window of stdscr configured by the display
+	 * routines to minimize update work by curses.
+	 */
+	if (initscr() == NULL)
+	{
+		warnx("couldn't initialize screen");
+		exit(0);
+	}
+
+	CMDLINE = LINES - 1;
+	wnd = (*curcmd->c_open)();
+	if (wnd == NULL) {
+		warnx("couldn't initialize display");
+		die(0);
+	}
+	wload = newwin(1, 0, 3, 20);
+	if (wload == NULL) {
+		warnx("couldn't set up load average window");
+		die(0);
+	}
+	gethostname(hostname, sizeof (hostname));
+	NREAD(X_HZ, &hz, LONG);
+	NREAD(X_STATHZ, &stathz, LONG);
+	(*curcmd->c_init)();
+	curcmd->c_flags |= CF_INIT;
+	labels();
+
+	dellave = 0.0;
+
+	signal(SIGALRM, display);
+	display(0);
+	noecho();
+	crmode();
+	keyboard();
+	/*NOTREACHED*/
+}
+
+void
+labels()
+{
+	if (curcmd->c_flags & CF_LOADAV) {
+		mvaddstr(2, 20,
+		    "/0   /1   /2   /3   /4   /5   /6   /7   /8   /9   /10");
+		mvaddstr(3, 5, "Load Average");
+	}
+	(*curcmd->c_label)();
+#ifdef notdef
+	mvprintw(21, 25, "CPU usage on %s", hostname);
+#endif
+	refresh();
+}
+
+void
+display(signo)
+	int signo;
+{
+	register int i, j;
+
+	/* Get the load average over the last minute. */
+	(void) getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0]));
+	(*curcmd->c_fetch)();
+	if (curcmd->c_flags & CF_LOADAV) {
+		j = 5.0*avenrun[0] + 0.5;
+		dellave -= avenrun[0];
+		if (dellave >= 0.0)
+			c = '<';
+		else {
+			c = '>';
+			dellave = -dellave;
+		}
+		if (dellave < 0.1)
+			c = '|';
+		dellave = avenrun[0];
+		wmove(wload, 0, 0); wclrtoeol(wload);
+		for (i = (j > 50) ? 50 : j; i > 0; i--)
+			waddch(wload, c);
+		if (j > 50)
+			wprintw(wload, " %4.1f", avenrun[0]);
+	}
+	(*curcmd->c_refresh)();
+	if (curcmd->c_flags & CF_LOADAV)
+		wrefresh(wload);
+	wrefresh(wnd);
+	move(CMDLINE, col);
+	refresh();
+	alarm(naptime);
+}
+
+void
+load()
+{
+
+	(void) getloadavg(avenrun, sizeof(avenrun)/sizeof(avenrun[0]));
+	mvprintw(CMDLINE, 0, "%4.1f %4.1f %4.1f",
+	    avenrun[0], avenrun[1], avenrun[2]);
+	clrtoeol();
+}
+
+void
+die(signo)
+	int signo;
+{
+	move(CMDLINE, 0);
+	clrtoeol();
+	refresh();
+	endwin();
+	exit(0);
+}
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#if __STDC__
+void
+error(const char *fmt, ...)
+#else
+void
+error(fmt, va_alist)
+	char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+	char buf[255];
+	int oy, ox;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+
+	if (wnd) {
+		getyx(stdscr, oy, ox);
+		(void) vsprintf(buf, fmt, ap);
+		clrtoeol();
+		standout();
+		mvaddstr(CMDLINE, 0, buf);
+		standend();
+		move(oy, ox);
+		refresh();
+	} else {
+		(void) vfprintf(stderr, fmt, ap);
+		fprintf(stderr, "\n");
+	}
+	va_end(ap);
+}
+
+void
+nlisterr(namelist)
+	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);
+}