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Implement displaying battery status on OpenBSD.

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This commit is contained in:
Jasper Lievisse Adriaanse 2012-04-29 20:19:59 +02:00 committed by Michael Stapelberg
parent 1c3fb04fb9
commit 2847f83402
1 changed files with 58 additions and 0 deletions
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58
src/print_battery_info.c
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@ -13,6 +13,13 @@
#include <sys/sysctl.h>
#endif
#if defined(__OpenBSD__)
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <machine/apmvar.h>
#endif
/*
* Get battery information from /sys. Note that it uses the design capacity to
* calculate the percentage, not the last full capacity, so you can see how
@ -168,6 +175,57 @@ void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char
(void)snprintf(remainingbuf, sizeof(remainingbuf), "%02dh%02d",
max(hours, 0), max(minutes, 0));
}
#elif defined(__OpenBSD__)
/*
* We're using apm(4) here, which is the interface to acpi(4) on amd64/i386 and
* the generic interface on macppc/sparc64/zaurus, instead of using sysctl(3) and
* probing acpi(4) devices.
*/
struct apm_power_info apm_info;
int apm_fd, ac_status, charging;
apm_fd = open("/dev/apm", O_RDONLY);
if (apm_fd < 0) {
OUTPUT_FULL_TEXT("can't open /dev/apm");
return;
}
if (ioctl(apm_fd, APM_IOC_GETPOWER, &apm_info) < 0)
OUTPUT_FULL_TEXT("can't read power info");
close(apm_fd);
/* Don't bother to go further if there's no battery present. */
if ((apm_info.battery_state == APM_BATTERY_ABSENT) ||
(apm_info.battery_state == APM_BATT_UNKNOWN)) {
OUTPUT_FULL_TEXT("No battery");
return;
}
switch(apm_info.ac_state) {
case APM_AC_OFF:
ac_status = CS_DISCHARGING;
break;
case APM_AC_ON:
ac_status = CS_CHARGING;
break;
default:
/* If we don't know what's going on, just assume we're discharging. */
ac_status = CS_DISCHARGING;
break;
}
(void)snprintf(statusbuf, sizeof(statusbuf), "%s",
(ac_status == CS_CHARGING ? "CHR" :
(ac_status == CS_DISCHARGING ? "BAT" : "FULL")));
(void)snprintf(percentagebuf, sizeof(percentagebuf), "%02d%%", apm_info.battery_life);
/* Can't give a meaningful value for remaining minutes if we're charging. */
if (ac_status == CS_CHARGING)
charging = 1;
(void)snprintf(remainingbuf, sizeof(remainingbuf), (charging ? "%s" : "%d"),
(charging ? "(CHR)" : apm_info.minutes_left));
#endif
for (walk = format; *walk != '\0'; walk++) {