Int 21 Fn F26C  - Novell Netware - Lock Logical Record Set                 [N]

   AX = F26Ch
   CX = length of request packet in bytes
   DX = 0000h (no reply packet)
   DS:SI -> request packet (see #2167)
   ES:DI ignored

Return: AX = status (see #2546 at INT 2F/AX=7A20h/BX=0000h)

See Also: AH=F2h"Novell",AX=F20Ah,AX=F26Ah,AH=CBh"NetWare"

Format of NetWare "Lock Logical Record Set" request packet:
Offset Size    Description (Table 2167)
 00h   BYTE    lock flag
       00h shareable lock
       01h exclusive lock
 01h   WORD    lock timeout in clock ticks (0000h = don't wait)