This service is provided only for the use of the Win32 subsystem and should not be used by anyone else.
| [EBX] | Special ring 0 handle corresponding to handle passed in. |
| [EDX] | Current file position for the file handle passed in. |
Carry flag set, handle was not mapped. EBX is not changed on failure.
| Registers Used
EAX, ECX, Flags. |