Int 61 Fn 0004  - Banyan Vines - File Service Control                      [N]

   AX = 0004h
   DS:DX -> request block (see #3072)

Return: AX = status (see #3071)

Notes: This service is handled by the redirector
   The request dispatch table contains dummy entries for requests 0Ah,
     0Dh, 15h, 19h, and 1Ah, which always return error 0033h (invalid
     request ID)

(Table 3071)
Values for Banyan VINES file service control status code:
 0000h successful
 0002h file not found
 0003h path not found
 000Fh invalid drive
 0015h drive not ready
 0033h invalid request ID
 0034h drive not connected
 0037h drive number out of range
 0038h drive number not available
 003Ah invalid operation
 0055h drive already connected
 0057h invalid number of entries

Format of Banyan VINES file service request block:
Offset Size    Description (Table 3072)
 00h   WORD    request ID (1..28)
 02h  n BYTES  additional parameters and result buffer