overdue

.rclone_repo/vendor/github.com/djherbis/times/ctime_windows.go

@@ -0,0 +1,96 @@
+package times
+
+import (
+	"os"
+	"syscall"
+	"time"
+	"unsafe"
+)
+
+type timespecEx struct {
+	atime
+	mtime
+	ctime
+	btime
+}
+
+// StatFile finds a Windows Timespec with ChangeTime.
+func StatFile(file *os.File) (Timespec, error) {
+	return statFile(syscall.Handle(file.Fd()))
+}
+
+func statFile(h syscall.Handle) (Timespec, error) {
+	var fileInfo fileBasicInfo
+	if err := getFileInformationByHandleEx(h, &fileInfo); err != nil {
+		return nil, err
+	}
+
+	var t timespecEx
+	t.atime.v = time.Unix(0, fileInfo.LastAccessTime.Nanoseconds())
+	t.mtime.v = time.Unix(0, fileInfo.LastWriteTime.Nanoseconds())
+	t.ctime.v = time.Unix(0, fileInfo.ChangeTime.Nanoseconds())
+	t.btime.v = time.Unix(0, fileInfo.CreationTime.Nanoseconds())
+	return t, nil
+}
+
+const hasPlatformSpecificStat = true
+
+func platformSpecficStat(name string) (Timespec, error) {
+	if findProcErr != nil {
+		return nil, findProcErr
+	}
+
+	f, err := os.Open(name)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return statFile(syscall.Handle(f.Fd()))
+}
+
+var (
+	findProcErr                      error
+	procGetFileInformationByHandleEx *syscall.Proc
+)
+
+func init() {
+	var modkernel32 *syscall.DLL
+	if modkernel32, findProcErr = syscall.LoadDLL("kernel32.dll"); findProcErr == nil {
+		procGetFileInformationByHandleEx, findProcErr = modkernel32.FindProc("GetFileInformationByHandleEx")
+	}
+}
+
+// fileBasicInfo holds the C++ data for FileTimes.
+//
+// https://msdn.microsoft.com/en-us/library/windows/desktop/aa364217(v=vs.85).aspx
+type fileBasicInfo struct {
+	CreationTime   syscall.Filetime
+	LastAccessTime syscall.Filetime
+	LastWriteTime  syscall.Filetime
+	ChangeTime     syscall.Filetime
+	FileAttributes uint32
+	_              uint32 // padding
+}
+
+type fileInformationClass int
+
+const (
+	fileBasicInfoClass fileInformationClass = iota
+)
+
+func getFileInformationByHandleEx(handle syscall.Handle, data *fileBasicInfo) (err error) {
+	if findProcErr != nil {
+		return findProcErr
+	}
+
+	r1, _, e1 := syscall.Syscall6(procGetFileInformationByHandleEx.Addr(), 4, uintptr(handle), uintptr(fileBasicInfoClass), uintptr(unsafe.Pointer(data)), unsafe.Sizeof(*data), 0, 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = error(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}