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ntdll: Implement NtPowerInformation(SystemBatteryState) on Linux. 

Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
stable
Alex Henrie 2019-10-29 20:22:23 -06:00 committed by Alexandre Julliard
parent e1bcf2d88a
commit 63ddf0343b
1 changed files with 73 additions and 0 deletions
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73
dlls/ntdll/nt.c
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@ -3137,6 +3137,73 @@ static ULONG mhz_from_cpuinfo(void)
}
#endif
#ifdef linux
static const char * get_sys_str(const char *path)
{
static char s[16];
FILE *f = fopen(path, "r");
const char *ret = NULL;
if (f)
{
if (fgets(s, sizeof(s), f))
ret = s;
fclose(f);
}
return ret;
}
static int get_sys_int(const char *path, int def)
{
const char *s = get_sys_str(path);
return s ? atoi(s) : def;
}
static NTSTATUS fill_battery_state(SYSTEM_BATTERY_STATE *bs)
{
char path[64];
const char *s;
unsigned int i = 0;
LONG64 voltage; /* microvolts */
bs->AcOnLine = get_sys_int("/sys/class/power_supply/AC/online", 1);
for (;;)
{
sprintf(path, "/sys/class/power_supply/BAT%u/status", i);
s = get_sys_str(path);
if (!s) break;
bs->Charging |= (strcmp(s, "Charging\n") == 0);
bs->Discharging |= (strcmp(s, "Discharging\n") == 0);
bs->BatteryPresent = TRUE;
i++;
}
if (bs->BatteryPresent)
{
voltage = get_sys_int("/sys/class/power_supply/BAT0/voltage_now", 0);
bs->MaxCapacity = get_sys_int("/sys/class/power_supply/BAT0/charge_full", 0) * voltage / 1e9;
bs->RemainingCapacity = get_sys_int("/sys/class/power_supply/BAT0/charge_now", 0) * voltage / 1e9;
bs->Rate = -get_sys_int("/sys/class/power_supply/BAT0/current_now", 0) * voltage / 1e9;
if (!bs->Charging && (LONG)bs->Rate < 0)
bs->EstimatedTime = 3600 * bs->RemainingCapacity / -(LONG)bs->Rate;
else
bs->EstimatedTime = ~0u;
}
return STATUS_SUCCESS;
}
#else
static NTSTATUS fill_battery_state(SYSTEM_BATTERY_STATE *)
{
FIXME("SystemBatteryState not implemented on this platform\n");
return STATUS_NOT_IMPLEMENTED;
}
#endif
/******************************************************************************
* NtPowerInformation [NTDLL.@]
*
@ -3190,6 +3257,12 @@ NTSTATUS WINAPI NtPowerInformation(
PowerCaps->DefaultLowLatencyWake = PowerSystemUnspecified;
return STATUS_SUCCESS;
}
case SystemBatteryState: {
if (nOutputBufferSize < sizeof(SYSTEM_BATTERY_STATE))
return STATUS_BUFFER_TOO_SMALL;
memset(lpOutputBuffer, 0, sizeof(SYSTEM_BATTERY_STATE));
return fill_battery_state(lpOutputBuffer);
}
case SystemExecutionState: {
PULONG ExecutionState = lpOutputBuffer;
WARN("semi-stub: SystemExecutionState\n"); /* Needed for .NET Framework, but using a FIXME is really noisy. */