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/* apm.c -- Simple APM interface
* Created: Mon Jan 8 10:28:16 1996 by faith@acm.org
* Revised: Fri Dec 26 20:34:25 1997 by faith@acm.org
* Copyright 1996, 1997 Rickard E. Faith (faith@acm.org)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: apm.c,v 1.10 1998/09/06 03:30:20 apenwarr Exp $
*
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <getopt.h>
#include "apm.h"
static int verbose = 0;
void change_state( int suspend )
{
int fd;
time_t then, now;
int error;
if ((fd = apm_open()) < 0) {
fprintf( stderr, "Cannot open APM device: %s\n", strerror( errno ) );
exit( 1 );
}
time( &then );
if (suspend) error = apm_suspend( fd );
else error = apm_standby( fd );
if (error != 0)
perror( "apm" );
else {
time( &now );
#if 0
/*
* This currently doesn't work as we should wait for a resume before
* trying to time this. It is possible for the above calls to return
* before the machine enters the desired state if some other apm-aware
* application (e.g., apmd) is running. -- sfr
*/
if (verbose) {
printf( "%s for %s\n",
suspend ? "Suspended" : "On standby",
apm_delta_time( then, now ) );
}
#endif
}
apm_close( fd );
}
void usage( void )
{
fprintf( stderr,
"usage: apm [-vmsS] [--verbose] [--minutes] [--suspend] [--standby]\n" );
exit( 1 );
}
int main( int argc, char **argv )
{
apm_info i;
int suspend = 0;
int standby = 0;
int debug = 0;
int displayMinutes = 0;
int c;
struct option longopts[] = {
{ "version", 0, 0, 'V' },
{ "verbose", 0, 0, 'v' },
{ "suspend", 0, 0, 's' },
{ "standby", 0, 0, 'S' },
{ "debug", 0, 0, 'd' },
{ "minutes", 0, 0, 'm' },
{ NULL, 0, 0, 0 }
};
extern int opterr;
opterr = 0;
while ((c = getopt_long( argc, argv, "VvsSdm", longopts, NULL )) != -1)
switch (c) {
case 'V':
fprintf( stderr, "apm version %s\n", VERSION );
exit( 0 );
break;
case 'v': ++verbose; break;
case 's': ++suspend; break;
case 'S': ++standby; break;
case 'd': ++debug; ++verbose; break;
case 'm': ++displayMinutes; break;
default: usage(); break;
}
switch (apm_exists()) {
case 1: fprintf( stderr, "No APM support in kernel\n" ); exit( 1 );
case 2: fprintf( stderr, "Old APM support in kernel\n" ); exit( 2 );
}
if (suspend && standby) usage();
if (suspend || standby) {
change_state( suspend );
exit( 0 );
}
if (apm_read( &i )) {
fprintf( stderr, "Cannot read APM information\n" );
exit( 1 );
}
if (verbose)
printf( "APM BIOS %d.%d (kernel driver %s)\n",
i.apm_version_major, i.apm_version_minor, i.driver_version );
if (!(i.apm_flags & APM_32_BIT_SUPPORT)) {
fprintf( stderr, "32-bit APM interface not supported\n" );
exit( 1 );
}
if (verbose && (i.apm_flags & 0x10))
printf( "APM BIOS Power Management is currently disabled\n" );
if (verbose && (i.apm_flags & 0x20))
printf( "APM BIOS Power Management is currently disengaged\n" );
switch (i.ac_line_status) {
case 0: printf( "AC off-line" ); break;
case 1: printf( "AC on-line" ); break;
case 2: printf( "On backup power" ); break;
}
if (i.battery_flags != 0xff /* Have a 1.1 BIOS and a system battery. */
&& i.battery_flags & 0x80) {
printf( ", no system battery" );
} else {
/* Even if battery_flags == 0xff, some 1.0
BIOSs provide this information. If we
have it, use it. */
switch (i.battery_status) {
case 0: printf( ", battery status high" ); break;
case 1: printf( ", battery status low" ); break;
case 2: printf( ", battery status critical" ); break;
case 3: printf( ", battery charging" ); break;
}
if (i.battery_percentage >= 0)
printf( ": %d%%", i.battery_percentage );
if (i.battery_time >= 0) {
if (displayMinutes) {
printf( " (%d %s)",
i.battery_time, i.using_minutes ? "min" : "sec" );
} else {
int seconds = i.using_minutes
? i.battery_time * 60 : i.battery_time;
printf( " (%s)", apm_time_nosec( seconds ) );
}
}
}
printf( "\n" );
if (debug) {
printf( "Using device 0x%04lx, %s: %d.%d\n", (unsigned long)apm_dev(),
i.driver_version, i.apm_version_major, i.apm_version_minor );
printf( "APM Flags = 0x%02x; AC Line Status = 0x%02x\n",
i.apm_flags, i.ac_line_status );
printf( "Battery Status = 0x%02x; Battery Flags = 0x%02x\n",
i.battery_status, i.battery_flags );
printf( "Battery %%age = %4d; Battery Time = %4d, use_mins=%d\n",
i.battery_percentage, i.battery_time, i.using_minutes);
}
return 0;
}
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