DosFileIO

#define INCL_DOSFILEMGR

USHORT  rc = DosFileIO(FileHandle, CommandList, CommandListLen,
                         ErrorOffset);

HFILE           FileHandle;     /* File handle */
PBYTE           CommandList;    /* Ptr to command buffer */
USHORT          CommandListLen; /* Length of command buffer  */
PLONG           ErrorOffset;    /* Ptr to command error offset */

USHORT           rc;            /* return code */