Prototype: DWORD SendASPI32Command(LPSRB)
Declaration: LPSRB lpSRB;
The SendASPI32Command function handles all SCSI I/O requests. A command code is used to specify the type of I/O requested. SendASPI32Command is called with a pointer to a SCSI Request Block (SRB) structure. While SRB definition can vary depending on the ASPI command code, all SRBs include a standard SRB header:
typedef struct {
BYTE SRB_Cmd; // ASPI command code
BYTE SRB_Status; // ASPI command status byte
BYTE SRB_HaId; // ASPI host adapter number
BYTE SRB_Flags; // ASPI request flags
DWORD SRB_Hdr_Rsvd; // Reserved, MUST = 0
} SRB_Header;
The SRB_Cmd field must contain the command code for the desired SCSI I/O operation. Each of these commands is described in the following sections. Possible values for SRB_Cmd include the following:
SC_HA_INQUIRY SC_GET_DEV_TYPE SC_EXEC_SCSI_CMD SC_ABORT_SRB SC_RESET_DEV SC_GET_DISK_INFO
The SC_GET_DISK_INFO command is not used with Windows NT.