NetBSD/usr.sbin/envstat/envstat.c

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2001-02-20 02:22:40 +03:00
/* $NetBSD: envstat.c,v 1.5 2001/02/19 23:22:43 cgd Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Bill Squier.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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/cdefs.h>
#ifndef lint
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__RCSID("$NetBSD: envstat.c,v 1.5 2001/02/19 23:22:43 cgd Exp $");
#endif
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <err.h>
#include <sys/envsys.h>
#include <sys/ioctl.h>
const char E_CANTENUM[] = "cannot enumerate sensors";
#define _PATH_SYSMON "/dev/sysmon"
int main __P((int, char **));
void listsensors __P((envsys_basic_info_t *, int));
int numsensors __P((int));
int fillsensors __P((int, envsys_tre_data_t *, envsys_basic_info_t *, int));
int longestname __P((envsys_basic_info_t *, int));
int marksensors __P((envsys_basic_info_t *, int *, char *, int));
int strtosnum __P((envsys_basic_info_t *, const char *, int));
void header __P((unsigned, int, envsys_basic_info_t *, const int * const,
int));
void values __P((unsigned, int, envsys_tre_data_t *, const int * const, int));
void usage __P((void));
int
main(argc, argv)
int argc;
char **argv;
{
int c, fd, ns, ls, celsius;
unsigned int interval, width, headrep, headcnt;
envsys_tre_data_t *etds;
envsys_basic_info_t *ebis;
int *cetds;
char *sensors;
const char *dev;
fd = -1;
ls = 0;
celsius = 1;
interval = 0;
width = 0;
sensors = NULL;
headrep = 22;
while ((c = getopt(argc, argv, "cfi:ln:s:w:")) != -1) {
switch(c) {
case 'i': /* wait time between displays */
interval = atoi(optarg);
break;
case 'w': /* minimum column width */
width = atoi(optarg);
break;
case 'l': /* list sensor names */
ls = 1;
break;
case 'n': /* repeat header every headrep lines */
headrep = atoi(optarg);
break;
case 's': /* restrict display to named sensors */
sensors = (char *)malloc(strlen(optarg) + 1);
if (sensors == NULL)
exit(1);
strcpy(sensors, optarg);
break;
case 'f': /* display temp in degF */
celsius = 0;
break;
case '?':
default:
usage();
/* NOTREACHED */
}
}
if (optind < argc)
dev = argv[optind];
else
dev = _PATH_SYSMON;
if ((fd = open(dev, O_RDONLY)) == -1)
err(1, "unable to open %s", dev);
/*
* Determine number of sensors, allocate and fill arrays with
* initial information. Determine column width
*/
if ((ns = numsensors(fd)) <= 0)
errx(1, E_CANTENUM);
cetds = (int *)malloc(ns * sizeof(int));
etds = (envsys_tre_data_t *)malloc(ns * sizeof(envsys_tre_data_t));
ebis = (envsys_basic_info_t *)malloc(ns * sizeof(envsys_basic_info_t));
if ((cetds == NULL) || (etds == NULL) || (ebis == NULL))
errx(1, "cannot allocate memory");
if (fillsensors(fd, etds, ebis, ns) == -1)
errx(1, E_CANTENUM);
if (ls) {
listsensors(ebis, ns);
exit(0);
}
#define MAX(x, y) (((x) > (y)) ? (x) : (y))
if (!width) {
width = longestname(ebis, ns);
width = MAX(((79 - ns) / ns), width);
}
/* Mark which sensor numbers are to be displayed */
if (marksensors(ebis, cetds, sensors, ns) == -1)
exit(1);
/* If we didn't specify an interval value, print the sensors once */
if (!interval) {
if (headrep)
header(width, celsius, ebis, cetds, ns);
values(width, celsius, etds, cetds, ns);
exit (0);
}
headcnt = 0;
if (headrep)
header(width, celsius, ebis, cetds, ns);
for (;;) {
values(width, celsius, etds, cetds, ns);
if (headrep && (++headcnt == headrep)) {
headcnt = 0;
header(width, celsius, ebis, cetds, ns);
}
sleep(interval);
if (fillsensors(fd, etds, ebis, ns) == -1)
errx(1, E_CANTENUM);
}
/* NOTREACHED */
return (0);
}
static const char *unit_str[] = {"degC", "RPM", "VAC", "Vcc", "Ohms", "Watts",
"Amps", "Ukn"};
/*
* pre: cetds[i] != 0 iff sensor i should appear in the output
* post: a column header line is displayed on stdout
*/
void
header(width, celsius, ebis, cetds, ns)
unsigned width;
int celsius;
envsys_basic_info_t *ebis;
const int * const cetds;
int ns;
{
int i;
const char *s;
/* sensor names */
for (i = 0; i < ns; ++i)
if (cetds[i])
printf(" %*.*s", (int)width, (int)width, ebis[i].desc);
printf("\n");
/* units */
for (i = 0; i < ns; ++i)
if (cetds[i]) {
if ((ebis[i].units == ENVSYS_STEMP) &&
!celsius)
s = "degF";
else if (ebis[i].units > 6)
s = unit_str[7];
else
s = unit_str[ebis[i].units];
printf(" %*.*s", (int)width, (int)width, s);
}
printf("\n");
}
void
values(width, celsius, etds, cetds, ns)
unsigned width;
int celsius;
envsys_tre_data_t *etds;
const int * const cetds;
int ns;
{
int i;
double temp;
for (i = 0; i < ns; ++i)
if (cetds[i]) {
/* * sensors without valid data */
if ((etds[i].validflags & ENVSYS_FCURVALID) == 0) {
printf(" %*.*s", (int)width, (int)width, "*");
continue;
}
switch(etds[i].units) {
case ENVSYS_STEMP:
temp = (etds[i].cur.data_us / 1000000.0) -
273.15;
if (!celsius)
temp = (9.0 / 5.0) * temp + 32.0;
printf(" %*.2f", width, temp);
break;
case ENVSYS_SFANRPM:
printf(" %*u", width, etds[i].cur.data_us);
break;
default:
printf(" %*.2f", width, etds[i].cur.data_s /
1000000.0);
break;
}
}
printf("\n");
}
/*
* post: displays usage on stderr
*/
void
usage()
{
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fprintf(stderr, "usage: %s [-c] [-s s1,s2,...]", getprogname());
fprintf(stderr, " [-i interval] [-n headrep] [-w width] [device]\n");
fprintf(stderr, " envstat -l [device]\n");
exit(1);
}
/*
* post: a list of sensor names supported by the device is displayed on stdout
*/
void
listsensors(ebis, ns)
envsys_basic_info_t *ebis;
int ns;
{
int i;
for (i = 0; i < ns; ++i)
if (ebis[i].validflags & ENVSYS_FVALID)
printf("%s\n", ebis[i].desc);
}
/*
* pre: fd contains a valid file descriptor of an envsys(4) supporting device
* post: returns the number of valid sensors provided by the device
* or -1 on error
*/
int
numsensors(fd)
int fd;
{
int count = 0, valid = 1;
envsys_tre_data_t etd;
etd.sensor = 0;
while (valid) {
if (ioctl(fd, ENVSYS_GTREDATA, &etd) == -1) {
fprintf(stderr, E_CANTENUM);
exit(1);
}
valid = etd.validflags & ENVSYS_FVALID;
if (valid)
++count;
++etd.sensor;
}
return count;
}
/*
* pre: fd contains a valid file descriptor of an envsys(4) supporting device
* && ns is the number of sensors
* && etds and ebis are arrays of sufficient size
* post: returns 0 and etds and ebis arrays are filled with sensor info
* or returns -1 on failure
*/
int
fillsensors(fd, etds, ebis, ns)
int fd;
envsys_tre_data_t *etds;
envsys_basic_info_t *ebis;
int ns;
{
int i;
for (i = 0; i < ns; ++i) {
ebis[i].sensor = i;
if (ioctl(fd, ENVSYS_GTREINFO, &ebis[i]) == -1)
return -1;
etds[i].sensor = i;
if (ioctl(fd, ENVSYS_GTREDATA, &etds[i]) == -1)
return -1;
}
return 0;
}
/*
* post: returns the strlen() of the longest sensor name
*/
int
longestname(ebis, ns)
envsys_basic_info_t *ebis;
int ns;
{
int i, maxlen, cur;
maxlen = 0;
for (i = 0; i < ns; ++i) {
cur = strlen(ebis[i].desc);
if (cur > maxlen)
maxlen = cur;
}
return maxlen;
}
/*
* post: returns 0 and cetds[i] != 0 iff sensor i should appear in the output
* or returns -1
*/
int
marksensors(ebis, cetds, sensors, ns)
envsys_basic_info_t *ebis;
int *cetds;
char *sensors;
int ns;
{
int i;
char *s;
if (sensors == NULL) {
/* No sensors specified, include them all */
for (i = 0; i < ns; ++i)
cetds[i] = 1;
return 0;
}
/* Assume no sensors in display */
memset(cetds, 0, ns * sizeof(int));
s = strtok(sensors, ",");
while (s != NULL) {
if ((i = strtosnum(ebis, s, ns)) != -1)
cetds[i] = 1;
else {
fprintf(stderr, "envstat: unknown sensor %s\n", s);
return (-1);
}
s = strtok(NULL, ",");
}
/* Check if we have at least one sensor selected for output */
for (i = 0; i < ns; ++i)
if (cetds[i] == 1)
return (0);
fprintf(stderr, "envstat: no sensors selected for display\n");
return (-1);
}
/*
* returns -1 if s is not a valid sensor name for the device
* or the sensor number of a sensor which has that name
*/
int
strtosnum(ebis, s, ns)
envsys_basic_info_t *ebis;
const char *s;
int ns;
{
int i;
for (i = 0; i < ns; ++i) {
if((ebis[i].validflags & ENVSYS_FVALID) &&
!strcmp(s, ebis[i].desc))
return ebis[i].sensor;
}
return -1;
}