INT 7F - Alloy NTNX - LOCK FILE FOR USER
AH = 41h
AL = user ID
DS:DX -> ASCIZA NUL-terminated ASCII string. The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h. Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. filename
Return: AL = status (see #03966)
Note: requests exclusive read/write access to file
SeeAlso: AH=00h,AH=41h"MW386",AH=42h"NTNX"
(Table 03966)
Values for Alloy function status:
00h successful
01h invalid function
02h already locked
03h unable to lock
04h lock table full or semaphore space exhausted