Int 21/AX=440Dh/CX=0870h

MS-DOS 7.0+ - GENERIC IOCTL - GET CURRENT LOCK STATE

AX = 440Dh
CX = 0870h / 4870h
(category code 08h for FAT12/16, 48h for FAT32; minor code 70h)
BL = drive number (00h=default,01h=A:,etc)

Return:
CF set on error
AX = error code (01h,02h,etc.) (see #01680 at AH=59h/BX=0000h)
CF clear if successful
AX = current lock level (0-3) or FFFFh if not locked
CX = lock permissions if AX<>FFFFh (see #01575)

See Also: AX=440Dh"DOS 3.2+" - AX=440Dh/CX=086Ch

Category: DOS Kernel - Int 21h - M

Interrups Categories Contents