mov ax, 4404h ; IOCTL command mov bl, Drive ; drive number (one-based) mov cx, size DataPacket ; size of data packet mov dx, seg DataPacket ; address of data packet mov ds, dx mov dx, offset DataPacket int 21h jc error cmp DataPacket.dspResult, ; 'OK' ; test for success jne failure ; call failed
Writes raw data from a buffer into a compressed volume file (CVF).
Value | Meaning |
0001h | ERROR_INVALID_FUNCTION |
0005h | ERROR_ACCESS_DENIED |
0006h | ERROR_INVALID_HANDLE |
000Dh | ERROR_INVALID_DATA |
Drive
One-based driver number for a DriveSpace driver (1 = A, 2 = B, and so on). If there is more than one DriveSpace drive, any one of the corresponding drive numbers can be given.
DataPacket
Data packet consisting of a DSHDR structure, a DSRAWIO structure, and an array of RawClusterInfo structures. The dspCommand field of the DSHDR structure must be set to the letter 'W'. The buffer pointed to by the rci_pdata field of the RawClusterInfo structure receives the raw data.
See also DSHDR, DSRAWIO, RawClusterInfo