Int 21 Fn 4311  - Banyan Vines 2.1+ - Set Extended File Attributes         [N]

   AX = 4311h
   CH = new attributes (see #1109)
   DS:DX -> ASCIZ filename

Return: CF clear if successful
   CF set on error
       AX = error code (01h,02h,03h,05h) (see #1366 at AH=59h/BX=0000h)

Note:  the filename may be a directory but must be on a VINES file service

See Also: AX=4301h,AX=4305h,AX=4310h,INT 2F/AX=110Eh

Bitfields for VINES extended file attributes:
Bit(s) Description (Table 1109)
 7 unused
 6 shareable
 5 execute-only
 4-0   unused