| 953 | } |
| 954 | |
| 955 | PSTORAGE_DEVICE_NUMBER |
| 956 | Ext2QueryDeviceNumber(HANDLE hVolume) |
| 957 | { |
| 958 | ULONG dataSize; |
| 959 | PSTORAGE_DEVICE_NUMBER SDN = NULL; |
| 960 | |
| 961 | NT::NTSTATUS status; |
| 962 | NT::IO_STATUS_BLOCK ioSb; |
| 963 | |
| 964 | dataSize = sizeof(STORAGE_DEVICE_NUMBER); |
| 965 | |
| 966 | QuerySDN: |
| 967 | |
| 968 | SDN = (PSTORAGE_DEVICE_NUMBER)malloc(dataSize); |
| 969 | if (NULL == SDN) { |
| 970 | goto errorout; |
| 971 | } |
| 972 | memset(SDN, 0, dataSize); |
| 973 | |
| 974 | status = NT::ZwDeviceIoControlFile( |
| 975 | hVolume, NULL, NULL, NULL, &ioSb, |
| 976 | IOCTL_STORAGE_GET_DEVICE_NUMBER, |
| 977 | NULL, 0, SDN, dataSize ); |
| 978 | |
| 979 | if (status == STATUS_BUFFER_TOO_SMALL) { |
| 980 | free(SDN); SDN = NULL; |
| 981 | dataSize += sizeof(STORAGE_DEVICE_NUMBER); |
| 982 | goto QuerySDN; |
| 983 | } |
| 984 | |
| 985 | if (!NT_SUCCESS(status)) { |
| 986 | free(SDN); SDN = NULL; |
| 987 | goto errorout; |
| 988 | } |
| 989 | |
| 990 | errorout: |
| 991 | |
| 992 | return SDN; |
| 993 | } |
| 994 | |
| 995 | BOOL |
| 996 | Ext2QueryDrvLetter( |
no outgoing calls
no test coverage detected