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/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <machine/apmvar.h>
#include "../../util.h"
const char *
battery_perc(const char *null)
{
struct apm_power_info apm_info;
int fd;
fd = open("/dev/apm", O_RDONLY);
if (fd < 0) {
fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
return NULL;
}
if (ioctl(fd, APM_IOC_GETPOWER, &apm_info) < 0) {
fprintf(stderr, "ioctl 'APM_IOC_GETPOWER': %s\n", strerror(errno));
close(fd);
return NULL;
}
close(fd);
return bprintf("%d", apm_info.battery_life);
}
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