INT 2F CU - IFSFUNC.EXE (DOS 4.x only) - IFSsee Installable File System IOCTL AX = 112Fh SS = DOS DS STACK: WORD function in low byte 00h ??? DS:SI -> Current Directory StructureThe data record used by DOS to keep track of the current directory on a drive; whether the drive is valid, network, SUBSTituted, or JOINed; and other pertinent information. See also INT 21h Function 52h.??? CL = drive (1=A:) 01h ??? DS:SI -> ??? CL = file handle??? 02h ??? DS:SI -> Current Directory StructureThe data record used by DOS to keep track of the current directory on a drive; whether the drive is valid, network, SUBSTituted, or JOINed; and other pertinent information. See also INT 21h Function 52h.??? DI = ??? CX = drive (1=A:) ??? Return: CF set on error AX = DOS error code (see #01680 at INT 21/AH=59h/BX=0000h) CF clear if successful Note: this function is called by the DOS 4.0 kernel SeeAlso: INT 21/AH=6Bh