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Hello,
I am having a spot of bother implementing the read disc structure command. I have already got the scsi inquiry command returning drive info. The error comes from transferring data from the returned buffer into a char to print.
I've tried printf("vendor id: %i\n", recvStruct.disk_category); which doesn't work either. It just prints "0"
Error:
invalid application of sizeof to a bit-field
invalid conversion from uchar to const char*
initializing argument 2 of char* strncpy(char*, const char*, size)
Code://Function to access disc structure void discStructure(HANDLE device) { readStructureCDB readStruct = {0}; //Creates CDB structure SCSI_recvStructure recvStruct = {0}; //receive data DWORD returnedBuf; //Bytes received through DeviceIoControl unsigned char cmdLen[sizeof(SCSI_PASS_THROUGH_DIRECT) + 96] = {0}; SCSI_PASS_THROUGH_DIRECT * discStructureSCSIptd = (SCSI_PASS_THROUGH_DIRECT *) cmdLen; typedef enum { DVD = 0x00, Bluray = 0x01 /* reserved */ } media_Type; //Set disc struct CDB here readStruct.opCode = SCSIOP_discStructure; readStruct.allocationLength = sizeof(recvStruct); //readStruct.mediaType = media_Type; //printf("%d", readStruct.opCode); memcpy(discStructureSCSIptd->Cdb, &readStruct, sizeof(readStruct)); discStructureSCSIptd->DataBuffer = &recvStruct; discStructureSCSIptd->DataTransferLength = sizeof(recvStruct); discStructureSCSIptd->DataIn = SCSI_IOCTL_DATA_IN; discStructureSCSIptd->CdbLength = sizeof(readStruct); discStructureSCSIptd->Length = sizeof(SCSI_PASS_THROUGH_DIRECT); discStructureSCSIptd->SenseInfoLength = sizeof(cmdLen) - sizeof(SCSI_PASS_THROUGH_DIRECT); discStructureSCSIptd->SenseInfoOffset = sizeof(SCSI_PASS_THROUGH_DIRECT); discStructureSCSIptd->TimeOutValue = 6000; BOOL bRet = DeviceIoControl(device, IOCTL_SCSI_PASS_THROUGH_DIRECT, (LPVOID)&cmdLen, sizeof(cmdLen), (LPVOID)&cmdLen, sizeof(cmdLen), &returnedBuf, NULL); DWORD error = GetLastError(); if (error != ERROR_SUCCESS) { printf("carry_cdb(): last error = %08X\n", error); } if (bRet) { char readStructExtract[100]; int i = 0; /*Prints info from drive*/ //strncpy(readStructExtract, recvStruct.disk_category, i = sizeof(recvStruct.disk_category)); // readStructExtract[i] = 0; printf("disc category: %u\n", recvStruct.disk_category); printf("disc category: %u\n", recvStruct.part_version); printf("disc category: %u\n", recvStruct.disc_size); printf("disc category: %u\n", recvStruct.max_rate); printf("disc category: %u\n", recvStruct.reserved0); strncpy(readStructExtract, recvStruct.disk_category, i = sizeof(recvStruct.disk_category)); readStructExtract[i] = 0; printf("vendor id: %s\n", readStructExtract); } return ; }
Code:#include <windows.h> #ifndef IOCTL_SCSI_PASS_THROUGH_DIRECT #define IOCTL_SCSI_PASS_THROUGH_DIRECT 0x4D014 #define SCSI_IOCTL_DATA_OUT 0 #define SCSI_IOCTL_DATA_IN 1 #define SCSI_IOCTL_DATA_UNSPECIFIED 2 //Check pointers - shouldnt be here typedef struct _SCSI_PASS_THROUGH_DIRECT{ USHORT Length; UCHAR ScsiStatus; UCHAR PathId; UCHAR TargetId; UCHAR Lun; UCHAR CdbLength; UCHAR SenseInfoLength; UCHAR DataIn; ULONG DataTransferLength; ULONG TimeOutValue; void * DataBuffer; ULONG SenseInfoOffset; UCHAR Cdb[16]; } SCSI_PASS_THROUGH_DIRECT; #endif //Termintes endif typedef struct _SCSI_INQUIRY_STD_DATA{ UCHAR preipheral_device_type : 5; UCHAR peripheral_qualifier: 3; UCHAR rsvrd : 7; UCHAR rmb: 1; UCHAR version; UCHAR RESPONSE_DATA_FORMAT; // 7 = AERC, 6 = Obsolete, 5 = NormACA, 4 = HiSup 3-0 = Response data format. // If ANSI Version = 0, this is ATAPI and bits 7-4 = ATAPI version. UCHAR ADDITIONAL_LENGTH; // Number of additional bytes available in inquiry data UCHAR SCCSReserved; // SCC-2 device flag and reserved fields UCHAR flags1; // First byte of support flags UCHAR flags2; // Second byte of support flags (Byte 7) char vendor_id[8]; char product_id[16]; char product_revision_level[4]; } SCSI_INQUIRY_STD_DATA; /*typedef struct SCSI_INQUIRY_STRCT_DATA{ }SCSI_INQUIRY_STRCT_DATA;*/ #ifndef _SCSI_DVD_STRUCTURES_H #define _SCSI_DVD_STRUCTURES_H typedef struct _SCSI_recvStructure{ /* from MMC specs */ UCHAR disk_category :4; UCHAR part_version :4; UCHAR disc_size :4; UCHAR max_rate :4; UCHAR reserved0 :1; UCHAR layers_num :2; UCHAR track :1; UCHAR layer_type :4; UCHAR linear_density :4; UCHAR track_density :4; UCHAR zero_1; UCHAR user_data_start [3]; UCHAR zero_2; UCHAR user_data_end [3]; UCHAR zero_3; UCHAR user_data_end_layer0 [3]; UCHAR reserved1 :7; UCHAR burst_cutting_area :1; UCHAR media_specific [2031]; }SCSI_recvStructure; #endif #ifndef SCSIOP_INQUIRY #define SCSIOP_INQUIRY 0x12 //*Reference region code - chech data types - UCHAR etc... typedef struct _inquiryCDB{ UCHAR OperationCode6; //* 0x12 - SCSIOP_INQUIRY UCHAR Reserved1 : 5; UCHAR LogicalUnitNumber : 3; UCHAR PageCode; UCHAR IReserved; UCHAR AllocationLength; UCHAR Control; } inquiryCDB; #endif #define SCSIOP_discStructure 0xAD typedef struct _readStructureCDB{ UCHAR opCode; //0xAD SCSIOP_discStructure UCHAR mediaType :4; UCHAR reserved0 :4; UCHAR address [4]; //[4] UCHAR layerNo; UCHAR format; UCHAR allocationLength ; //[2] UCHAR reserved1 :6; UCHAR agid :2; //check these etc UCHAR ctl; }readStructureCDB;
I don't think I've set the return structure up correctly. Its called SCSI_DVD_STRUCTURES_H. The guide I'm working from says set the data types to UCHAR. I've tried char and it doesn't change anything. I need to pass values to a char so they can be used to perform various other tasks.
Thanks for any help in advance.Code:#define _SCSI_DVD_STRUCTURES_H typedef struct _SCSI_recvStructure{ /* from MMC specs */ UCHAR disk_category :4; UCHAR part_version :4; UCHAR disc_size :4; UCHAR max_rate :4; UCHAR reserved0 :1; UCHAR layers_num :2; UCHAR track :1; UCHAR layer_type :4; UCHAR linear_density :4; UCHAR track_density :4; UCHAR zero_1; UCHAR user_data_start [3]; UCHAR zero_2; UCHAR user_data_end [3]; UCHAR zero_3; UCHAR user_data_end_layer0 [3]; UCHAR reserved1 :7; UCHAR burst_cutting_area :1; UCHAR media_specific [2031]; }SCSI_recvStructure; #endif
