public void Seek(SafeFileHandle handle, long position, SeekOrigin origin)
{
var low = (int)(position & 0xffffffff);
var high = (int)(position >> 32);
var f = WinNative.SetFilePointer(handle, low, out high, WinNative.EMoveMethod.Begin);
if (f == WinNative.INVALID_SET_FILE_POINTER)
{
throw new Win32Exception();
}
}
public void SetFileSize(SafeFileHandle handle, long count)
{
var low = (int)(count & 0xffffffff);
var high = (int)(count >> 32);
WinNative.SetFilePointer(handle, low, out high, WinNative.EMoveMethod.Begin);
if (!WinNative.SetEndOfFile(handle))
{
throw new Win32Exception();
}
FSync(handle);
}
public static void Seek(SafeFileHandle handle, long position, SeekOrigin origin)
{
#if !__MonoCS__ && !USE_UNIX_IO
var low = (int)(position & 0xffffffff);
var high = (int)(position >> 32);
var f = WinNative.SetFilePointer(handle, low, out high, WinNative.EMoveMethod.Begin);
if (f == WinNative.INVALID_SET_FILE_POINTER)
{
throw new Win32Exception();
}
#else
int r = 0;
do
{
r = (int)Syscall.lseek(handle.DangerousGetHandle().ToInt32(), position, SeekFlags.SEEK_SET);
} while (UnixMarshal.ShouldRetrySyscall(r));
UnixMarshal.ThrowExceptionForLastErrorIf(r);
#endif
}
public static void SetFileSize(SafeFileHandle handle, long count)
{
#if !__MonoCS__ && !USE_UNIX_IO
var low = (int)(count & 0xffffffff);
var high = (int)(count >> 32);
WinNative.SetFilePointer(handle, low, out high, WinNative.EMoveMethod.Begin);
if (!WinNative.SetEndOfFile(handle))
{
throw new Win32Exception();
}
#else
int r;
do
{
r = Syscall.ftruncate(handle.DangerousGetHandle().ToInt32(), count);
} while (UnixMarshal.ShouldRetrySyscall(r));
UnixMarshal.ThrowExceptionForLastErrorIf(r);
#endif
FSync(handle);
}