// Chtimes changes the modification and access time of a given file.
func Chtimes(path string, atime, mtime time.Time) error {
	// https://github.com/torvalds/linux/blob/2decb2682f80759f631c8332f9a2a34a02150a03/include/uapi/linux/fcntl.h#L56
	var utimes [2]unix.Timespec
	utimes[0] = unix.NsecToTimespec(atime.UnixNano())
	utimes[1] = unix.NsecToTimespec(mtime.UnixNano())

	if e := unix.UtimesNanoAt(unix.AT_FDCWD, path, utimes[0:], unix.AT_SYMLINK_NOFOLLOW); e != nil {
		return &os.PathError{Op: "futimesat", Path: path, Err: e}
	}
	return nil
}
Пример #2
0
func TestPpoll(t *testing.T) {
	f, cleanup := mktmpfifo(t)
	defer cleanup()

	const timeout = 100 * time.Millisecond

	ok := make(chan bool, 1)
	go func() {
		select {
		case <-time.After(10 * timeout):
			t.Errorf("Ppoll: failed to timeout after %d", 10*timeout)
		case <-ok:
		}
	}()

	fds := []unix.PollFd{{Fd: int32(f.Fd()), Events: unix.POLLIN}}
	timeoutTs := unix.NsecToTimespec(int64(timeout))
	n, err := unix.Ppoll(fds, &timeoutTs, nil)
	ok <- true
	if err != nil {
		t.Errorf("Ppoll: unexpected error: %v", err)
		return
	}
	if n != 0 {
		t.Errorf("Ppoll: wrong number of events: got %v, expected %v", n, 0)
		return
	}
}
Пример #3
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// durationToTimespec prepares a timeout value
func durationToTimespec(d time.Duration) unix.Timespec {
	return unix.NsecToTimespec(d.Nanoseconds())
}