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unix: add ioctl wrappers for RTC wake alarm on Linux

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Add wrappers to set and get RTC wake alarm on Linux via the
RTC_WKALM_SET and RTC_WKALM_RD ioctls.
This commit is contained in:
Ingo Gottwald
2020-06-02 22:07:57 +02:00
parent 8d3cce7afc
commit a78d0f4193
2 changed files with 28 additions and 0 deletions
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12
unix/syscall_linux.go
View File

@@ -97,6 +97,12 @@ func IoctlSetRTCTime(fd int, value *RTCTime) error {
return err
}
func IoctlSetRTCWkAlrm(fd int, value *RTCWkAlrm) error {
err := ioctl(fd, RTC_WKALM_SET, uintptr(unsafe.Pointer(value)))
runtime.KeepAlive(value)
return err
}
func IoctlGetUint32(fd int, req uint) (uint32, error) {
var value uint32
err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
@@ -109,6 +115,12 @@ func IoctlGetRTCTime(fd int) (*RTCTime, error) {
return &value, err
}
func IoctlGetRTCWkAlrm(fd int) (*RTCWkAlrm, error) {
var value RTCWkAlrm
err := ioctl(fd, RTC_WKALM_RD, uintptr(unsafe.Pointer(&value)))
return &value, err
}
//sys Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error)
func Link(oldpath string, newpath string) (err error) {

16
unix/syscall_linux_test.go
View File

@@ -73,6 +73,22 @@ func TestIoctlGetRTCTime(t *testing.T) {
t.Logf("RTC time: %04d-%02d-%02d %02d:%02d:%02d", v.Year+1900, v.Mon+1, v.Mday, v.Hour, v.Min, v.Sec)
}
func TestIoctlGetRTCWkAlrm(t *testing.T) {
f, err := os.Open("/dev/rtc0")
if err != nil {
t.Skipf("skipping test, %v", err)
}
defer f.Close()
v, err := unix.IoctlGetRTCWkAlrm(int(f.Fd()))
if err != nil {
t.Fatalf("failed to perform ioctl: %v", err)
}
t.Logf("RTC wake alarm enabled '%d'; time: %04d-%02d-%02d %02d:%02d:%02d",
v.Enabled, v.Time.Year+1900, v.Time.Mon+1, v.Time.Mday, v.Time.Hour, v.Time.Min, v.Time.Sec)
}
func TestPpoll(t *testing.T) {
if runtime.GOOS == "android" {
t.Skip("mkfifo syscall is not available on android, skipping test")