| 916 | } |
| 917 | |
| 918 | PVOLUME_DISK_EXTENTS |
| 919 | Ext2QueryVolumeExtents(HANDLE hVolume) |
| 920 | { |
| 921 | ULONG dataSize = 1024; |
| 922 | PVOLUME_DISK_EXTENTS dskExtents = NULL; |
| 923 | |
| 924 | NT::NTSTATUS status; |
| 925 | NT::IO_STATUS_BLOCK ioSb; |
| 926 | |
| 927 | QueryExtent: |
| 928 | |
| 929 | dskExtents = (PVOLUME_DISK_EXTENTS)malloc(dataSize); |
| 930 | if (NULL == dskExtents) { |
| 931 | goto errorout; |
| 932 | } |
| 933 | |
| 934 | status = NT::ZwDeviceIoControlFile( |
| 935 | hVolume, NULL, NULL, NULL, &ioSb, |
| 936 | IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, |
| 937 | NULL, 0, dskExtents, dataSize ); |
| 938 | |
| 939 | if (status == STATUS_BUFFER_TOO_SMALL) { |
| 940 | free(dskExtents); dskExtents = NULL; |
| 941 | dataSize += 1024; |
| 942 | goto QueryExtent; |
| 943 | } |
| 944 | |
| 945 | if (!NT_SUCCESS(status)) { |
| 946 | free(dskExtents); dskExtents = NULL; |
| 947 | goto errorout; |
| 948 | } |
| 949 | |
| 950 | errorout: |
| 951 | |
| 952 | return dskExtents; |
| 953 | } |
| 954 | |
| 955 | PSTORAGE_DEVICE_NUMBER |
| 956 | Ext2QueryDeviceNumber(HANDLE hVolume) |
no outgoing calls
no test coverage detected