mirror of
https://github.com/reactos/reactos.git
synced 2024-12-27 01:24:38 +00:00
- Fixed the creation of arc names. Only valid partitions should be linked to an arc names.
- Create arc names only for partitions on disks, which are visible by the bios. svn path=/trunk/; revision=17865
This commit is contained in:
Hartmut Birr
parent
9f214815b7
commit
1384de5268
1 changed files with 455 additions and 75 deletions
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@ -19,22 +19,441 @@
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#define FS_VOLUME_BUFFER_SIZE (MAX_PATH + sizeof(FILE_FS_VOLUME_INFORMATION))
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/* STRUCTURES ***************************************************************/
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typedef struct _DISKENTRY
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{
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LIST_ENTRY ListEntry;
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ULONG DiskNumber;
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ULONG Signature;
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ULONG Checksum;
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PDEVICE_OBJECT DeviceObject;
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} DISKENTRY, *PDISKENTRY;
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#define PARTITION_TBL_SIZE 4
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#include <pshpack1.h>
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typedef struct _PARTITION
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{
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unsigned char BootFlags; /* bootable? 0=no, 128=yes */
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unsigned char StartingHead; /* beginning head number */
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unsigned char StartingSector; /* beginning sector number */
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unsigned char StartingCylinder; /* 10 bit nmbr, with high 2 bits put in begsect */
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unsigned char PartitionType; /* Operating System type indicator code */
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unsigned char EndingHead; /* ending head number */
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unsigned char EndingSector; /* ending sector number */
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unsigned char EndingCylinder; /* also a 10 bit nmbr, with same high 2 bit trick */
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unsigned int StartingBlock; /* first sector relative to start of disk */
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unsigned int SectorCount; /* number of sectors in partition */
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} PARTITION, *PPARTITION;
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typedef struct _PARTITION_SECTOR
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{
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UCHAR BootCode[440]; /* 0x000 */
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ULONG Signature; /* 0x1B8 */
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UCHAR Reserved[2]; /* 0x1BC */
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PARTITION Partition[PARTITION_TBL_SIZE]; /* 0x1BE */
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USHORT Magic; /* 0x1FE */
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} PARTITION_SECTOR, *PPARTITION_SECTOR;
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#include <poppack.h>
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/* FUNCTIONS ****************************************************************/
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STATIC
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NTSTATUS
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STDCALL
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INIT_FUNCTION
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DiskQueryRoutine(PWSTR ValueName,
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ULONG ValueType,
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PVOID ValueData,
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ULONG ValueLength,
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PVOID Context,
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PVOID EntryContext)
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{
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PLIST_ENTRY ListHead = (PLIST_ENTRY)Context;
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PULONG GlobalDiskCount = (PULONG)EntryContext;
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PDISKENTRY DiskEntry;
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UNICODE_STRING NameU;
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if (ValueType == REG_SZ &&
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ValueLength == 20 * sizeof(WCHAR))
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{
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DiskEntry = ExAllocatePool(PagedPool, sizeof(DISKENTRY));
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if (DiskEntry == NULL)
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{
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return STATUS_NO_MEMORY;
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}
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DiskEntry->DiskNumber = (*GlobalDiskCount)++;
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NameU.Buffer = (PWCHAR)ValueData;
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NameU.Length = NameU.MaximumLength = 8 * sizeof(WCHAR);
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RtlUnicodeStringToInteger(&NameU, 16, &DiskEntry->Checksum);
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NameU.Buffer = (PWCHAR)ValueData + 9;
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RtlUnicodeStringToInteger(&NameU, 16, &DiskEntry->Signature);
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InsertTailList(ListHead, &DiskEntry->ListEntry);
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}
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return STATUS_SUCCESS;
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}
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#define ROOT_NAME L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter"
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STATIC VOID INIT_FUNCTION
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IopEnumerateBiosDisks(PLIST_ENTRY ListHead)
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{
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RTL_QUERY_REGISTRY_TABLE QueryTable[2];
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WCHAR Name[100];
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ULONG AdapterCount;
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ULONG ControllerCount;
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ULONG DiskCount;
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NTSTATUS Status;
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ULONG GlobalDiskCount=0;
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memset(QueryTable, 0, sizeof(QueryTable));
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QueryTable[0].Name = L"Identifier";
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QueryTable[0].QueryRoutine = DiskQueryRoutine;
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QueryTable[0].EntryContext = (PVOID)&GlobalDiskCount;
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AdapterCount = 0;
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while (1)
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{
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swprintf(Name, L"%s\\%lu", ROOT_NAME, AdapterCount);
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Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
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Name,
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&QueryTable[1],
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NULL,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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break;
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}
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swprintf(Name, L"%s\\%lu\\DiskController", ROOT_NAME, AdapterCount);
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Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
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Name,
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&QueryTable[1],
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NULL,
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NULL);
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if (NT_SUCCESS(Status))
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{
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ControllerCount = 0;
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while (1)
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{
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swprintf(Name, L"%s\\%lu\\DiskController\\%lu", ROOT_NAME, AdapterCount, ControllerCount);
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Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
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Name,
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&QueryTable[1],
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NULL,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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break;
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}
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swprintf(Name, L"%s\\%lu\\DiskController\\%lu\\DiskPeripheral", ROOT_NAME, AdapterCount, ControllerCount);
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Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
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Name,
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&QueryTable[1],
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NULL,
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NULL);
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if (NT_SUCCESS(Status))
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{
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DiskCount = 0;
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while (1)
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{
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swprintf(Name, L"%s\\%lu\\DiskController\\%lu\\DiskPeripheral\\%lu", ROOT_NAME, AdapterCount, ControllerCount, DiskCount);
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Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
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Name,
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QueryTable,
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(PVOID)ListHead,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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break;
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}
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DiskCount++;
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}
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}
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ControllerCount++;
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}
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}
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AdapterCount++;
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}
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}
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STATIC VOID INIT_FUNCTION
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IopEnumerateDisks(PLIST_ENTRY ListHead)
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{
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ULONG i, k;
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PDISKENTRY DiskEntry;
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DISK_GEOMETRY DiskGeometry;
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KEVENT Event;
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PIRP Irp;
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IO_STATUS_BLOCK StatusBlock;
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LARGE_INTEGER PartitionOffset;
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PULONG Buffer;
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WCHAR DeviceNameBuffer[80];
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UNICODE_STRING DeviceName;
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NTSTATUS Status;
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PDEVICE_OBJECT DeviceObject;
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PFILE_OBJECT FileObject;
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BOOLEAN IsRemovableMedia;
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PPARTITION_SECTOR PartitionBuffer = NULL;
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ULONG PartitionBufferSize = 0;
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for (i = 0; i < IoGetConfigurationInformation()->DiskCount; i++)
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{
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swprintf(DeviceNameBuffer,
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L"\\Device\\Harddisk%lu\\Partition0",
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i);
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RtlInitUnicodeString(&DeviceName,
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DeviceNameBuffer);
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Status = IoGetDeviceObjectPointer(&DeviceName,
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FILE_READ_DATA,
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&FileObject,
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&DeviceObject);
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if (!NT_SUCCESS(Status))
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{
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continue;
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}
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IsRemovableMedia = DeviceObject->Characteristics & FILE_REMOVABLE_MEDIA ? TRUE : FALSE;
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ObDereferenceObject(FileObject);
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if (IsRemovableMedia)
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{
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ObDereferenceObject(DeviceObject);
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continue;
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}
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DiskEntry = ExAllocatePool(PagedPool, sizeof(DISKENTRY));
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if (DiskEntry == NULL)
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{
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KEBUGCHECK(0);
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}
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DiskEntry->DiskNumber = i;
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DiskEntry->DeviceObject = DeviceObject;
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/* determine the sector size */
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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Irp = IoBuildDeviceIoControlRequest(IOCTL_DISK_GET_DRIVE_GEOMETRY,
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DeviceObject,
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NULL,
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0,
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&DiskGeometry,
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sizeof(DISK_GEOMETRY),
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FALSE,
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&Event,
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&StatusBlock);
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if (Irp == NULL)
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{
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KEBUGCHECK(0);
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}
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Status = IoCallDriver(DeviceObject, Irp);
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&Event,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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Status = StatusBlock.Status;
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}
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if (!NT_SUCCESS(Status))
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{
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KEBUGCHECK(0);
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}
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if (PartitionBuffer != NULL && PartitionBufferSize < DiskGeometry.BytesPerSector)
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{
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ExFreePool(PartitionBuffer);
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PartitionBuffer = NULL;
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}
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if (PartitionBuffer == NULL)
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{
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PartitionBufferSize = max(DiskGeometry.BytesPerSector, PAGE_SIZE);
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PartitionBuffer = ExAllocatePool(PagedPool, PartitionBufferSize);
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if (PartitionBuffer == NULL)
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{
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KEBUGCHECK(0);
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}
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}
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/* read the partition sector */
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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PartitionOffset.QuadPart = 0;
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Irp = IoBuildSynchronousFsdRequest(IRP_MJ_READ,
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DeviceObject,
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PartitionBuffer,
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DiskGeometry.BytesPerSector,
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&PartitionOffset,
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&Event,
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&StatusBlock);
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Status = IoCallDriver(DeviceObject, Irp);
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&Event,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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Status = StatusBlock.Status;
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}
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if (!NT_SUCCESS(Status))
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{
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KEBUGCHECK(0);
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}
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/* Calculate the MBR checksum */
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DiskEntry->Checksum = 0;
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Buffer = (PULONG)PartitionBuffer;
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for (k = 0; k < 128; k++)
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{
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DiskEntry->Checksum += Buffer[k];
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}
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DiskEntry->Checksum = ~DiskEntry->Checksum + 1;
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DiskEntry->Signature = PartitionBuffer->Signature;
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InsertTailList(ListHead, &DiskEntry->ListEntry);
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}
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if (PartitionBuffer)
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{
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ExFreePool(PartitionBuffer);
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}
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}
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STATIC NTSTATUS INIT_FUNCTION
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IopAssignArcNamesToDisk(PDEVICE_OBJECT DeviceObject, ULONG RDisk, ULONG DiskNumber)
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{
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WCHAR DeviceNameBuffer[80];
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WCHAR ArcNameBuffer[80];
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UNICODE_STRING DeviceName;
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UNICODE_STRING ArcName;
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PDRIVE_LAYOUT_INFORMATION LayoutInfo = NULL;
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NTSTATUS Status;
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ULONG i;
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KEVENT Event;
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PIRP Irp;
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IO_STATUS_BLOCK StatusBlock;
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ULONG PartitionNumber;
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swprintf(DeviceNameBuffer,
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L"\\Device\\Harddisk%lu\\Partition0",
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DiskNumber);
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RtlInitUnicodeString(&DeviceName,
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DeviceNameBuffer);
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swprintf(ArcNameBuffer,
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L"\\ArcName\\multi(0)disk(0)rdisk(%lu)",
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RDisk);
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RtlInitUnicodeString(&ArcName,
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ArcNameBuffer);
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DPRINT("%wZ ==> %wZ\n", &ArcName, &DeviceName);
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Status = IoAssignArcName(&ArcName, &DeviceName);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("IoAssignArcName failed, status=%lx\n", Status);
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return(Status);
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}
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LayoutInfo = ExAllocatePool(PagedPool, 2 * PAGE_SIZE);
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if (LayoutInfo == NULL)
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{
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return STATUS_NO_MEMORY;
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}
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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Irp = IoBuildDeviceIoControlRequest(IOCTL_DISK_GET_DRIVE_LAYOUT,
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DeviceObject,
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NULL,
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0,
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LayoutInfo,
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2 * PAGE_SIZE,
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FALSE,
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&Event,
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&StatusBlock);
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if (Irp == NULL)
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{
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ExFreePool(LayoutInfo);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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Status = IoCallDriver(DeviceObject, Irp);
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&Event,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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Status = StatusBlock.Status;
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}
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if (!NT_SUCCESS(Status))
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{
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ExFreePool(LayoutInfo);
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return Status;
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}
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DPRINT("Number of partitions: %u\n", LayoutInfo->PartitionCount);
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PartitionNumber = 1;
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for (i = 0; i < LayoutInfo->PartitionCount; i++)
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{
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if (!IsContainerPartition(LayoutInfo->PartitionEntry[i].PartitionType) &&
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LayoutInfo->PartitionEntry[i].PartitionType != PARTITION_ENTRY_UNUSED)
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{
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swprintf(DeviceNameBuffer,
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L"\\Device\\Harddisk%lu\\Partition%lu",
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DiskNumber,
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PartitionNumber);
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RtlInitUnicodeString(&DeviceName, DeviceNameBuffer);
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swprintf(ArcNameBuffer,
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L"\\ArcName\\multi(0)disk(0)rdisk(%lu)partition(%lu)",
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RDisk,
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PartitionNumber);
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RtlInitUnicodeString(&ArcName, ArcNameBuffer);
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DPRINT("%wZ ==> %wZ\n", &ArcName, &DeviceName);
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Status = IoAssignArcName(&ArcName, &DeviceName);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("IoAssignArcName failed, status=%lx\n", Status);
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ExFreePool(LayoutInfo);
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return(Status);
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}
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PartitionNumber++;
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}
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}
|
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ExFreePool(LayoutInfo);
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return STATUS_SUCCESS;
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}
|
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|
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NTSTATUS INIT_FUNCTION
|
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IoCreateArcNames(VOID)
|
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{
|
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PCONFIGURATION_INFORMATION ConfigInfo;
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PDRIVE_LAYOUT_INFORMATION LayoutInfo = NULL;
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WCHAR DeviceNameBuffer[80];
|
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WCHAR ArcNameBuffer[80];
|
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UNICODE_STRING DeviceName;
|
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UNICODE_STRING ArcName;
|
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ULONG i, j, k;
|
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ULONG i, RDiskNumber;
|
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NTSTATUS Status;
|
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PFILE_OBJECT FileObject;
|
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PDEVICE_OBJECT DeviceObject;
|
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BOOL IsRemovableMedia;
|
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LIST_ENTRY BiosDiskListHead;
|
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LIST_ENTRY DiskListHead;
|
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PLIST_ENTRY Entry;
|
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PDISKENTRY BiosDiskEntry;
|
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PDISKENTRY DiskEntry;
|
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|
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DPRINT("IoCreateArcNames() called\n");
|
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|
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|
|
@ -66,80 +485,41 @@ IoCreateArcNames(VOID)
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}
|
||||
|
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/* create ARC names for hard disk drives */
|
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DPRINT("Disk drives: %lu\n", ConfigInfo->DiskCount);
|
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for (i = 0, k = 0; i < ConfigInfo->DiskCount; i++)
|
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InitializeListHead(&BiosDiskListHead);
|
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InitializeListHead(&DiskListHead);
|
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IopEnumerateBiosDisks(&BiosDiskListHead);
|
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IopEnumerateDisks(&DiskListHead);
|
||||
|
||||
RDiskNumber = 0;
|
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while (!IsListEmpty(&BiosDiskListHead))
|
||||
{
|
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swprintf(DeviceNameBuffer,
|
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L"\\Device\\Harddisk%lu\\Partition0",
|
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i);
|
||||
RtlInitUnicodeString(&DeviceName,
|
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DeviceNameBuffer);
|
||||
|
||||
|
||||
Status = IoGetDeviceObjectPointer(&DeviceName,
|
||||
FILE_READ_DATA,
|
||||
&FileObject,
|
||||
&DeviceObject);
|
||||
if (!NT_SUCCESS(Status))
|
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Entry = RemoveHeadList(&BiosDiskListHead);
|
||||
BiosDiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
|
||||
Entry = DiskListHead.Flink;
|
||||
while (Entry != &DiskListHead)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
IsRemovableMedia = DeviceObject->Characteristics & FILE_REMOVABLE_MEDIA ? TRUE : FALSE;
|
||||
ObDereferenceObject(FileObject);
|
||||
if (IsRemovableMedia)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
|
||||
if (DiskEntry->Checksum == BiosDiskEntry->Checksum &&
|
||||
DiskEntry->Signature == BiosDiskEntry->Signature)
|
||||
{
|
||||
|
||||
swprintf(ArcNameBuffer,
|
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L"\\ArcName\\multi(0)disk(0)rdisk(%lu)partition(0)",
|
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k);
|
||||
RtlInitUnicodeString(&ArcName,
|
||||
ArcNameBuffer);
|
||||
DPRINT("%wZ ==> %wZ\n",
|
||||
&ArcName,
|
||||
&DeviceName);
|
||||
Status = IopAssignArcNamesToDisk(DiskEntry->DeviceObject, RDiskNumber, DiskEntry->DiskNumber);
|
||||
|
||||
Status = IoAssignArcName(&ArcName,
|
||||
&DeviceName);
|
||||
if (!NT_SUCCESS(Status))
|
||||
return(Status);
|
||||
RemoveEntryList(&DiskEntry->ListEntry);
|
||||
ExFreePool(DiskEntry);
|
||||
break;
|
||||
}
|
||||
Entry = Entry->Flink;
|
||||
}
|
||||
RDiskNumber++;
|
||||
ExFreePool(BiosDiskEntry);
|
||||
}
|
||||
|
||||
Status = xHalQueryDriveLayout(&DeviceName,
|
||||
&LayoutInfo);
|
||||
if (!NT_SUCCESS(Status))
|
||||
return(Status);
|
||||
|
||||
DPRINT("Number of partitions: %u\n", LayoutInfo->PartitionCount);
|
||||
|
||||
for (j = 0;j < LayoutInfo->PartitionCount; j++)
|
||||
{
|
||||
swprintf(DeviceNameBuffer,
|
||||
L"\\Device\\Harddisk%lu\\Partition%lu",
|
||||
i,
|
||||
j + 1);
|
||||
RtlInitUnicodeString(&DeviceName,
|
||||
DeviceNameBuffer);
|
||||
|
||||
swprintf(ArcNameBuffer,
|
||||
L"\\ArcName\\multi(0)disk(0)rdisk(%lu)partition(%lu)",
|
||||
k,
|
||||
j + 1);
|
||||
RtlInitUnicodeString(&ArcName,
|
||||
ArcNameBuffer);
|
||||
DPRINT("%wZ ==> %wZ\n",
|
||||
&ArcName,
|
||||
&DeviceName);
|
||||
|
||||
Status = IoAssignArcName(&ArcName,
|
||||
&DeviceName);
|
||||
if (!NT_SUCCESS(Status))
|
||||
return(Status);
|
||||
}
|
||||
|
||||
ExFreePool(LayoutInfo);
|
||||
LayoutInfo = NULL;
|
||||
k++;
|
||||
while (!IsListEmpty(&DiskListHead))
|
||||
{
|
||||
Entry = RemoveHeadList(&DiskListHead);
|
||||
DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
|
||||
ExFreePool(DiskEntry);
|
||||
}
|
||||
|
||||
/* create ARC names for cdrom drives */
|
||||
|
|
@ -173,7 +553,7 @@ IoCreateArcNames(VOID)
|
|||
}
|
||||
|
||||
|
||||
static NTSTATUS
|
||||
static NTSTATUS INIT_FUNCTION
|
||||
IopCheckCdromDevices(PULONG DeviceNumber)
|
||||
{
|
||||
PCONFIGURATION_INFORMATION ConfigInfo;
|
||||
|
|
|
|||
Loading…
Reference in a new issue