[hbirr] 17866: - Assign first the partitions to drive letters, which have a registry entry in MountedDevices.
- Assign first the partitions to drive letters, which have a registry entry in MountedDevices. - Create for all partitions a registry entry in MountedDevices if none exists. - Assign all partitions with arc names first and the others as second. Modified: trunk/reactos/ntoskrnl/io/disk.c _____
Modified: trunk/reactos/ntoskrnl/io/disk.c --- trunk/reactos/ntoskrnl/io/disk.c 2005-09-15 17:23:41 UTC (rev 17865) +++ trunk/reactos/ntoskrnl/io/disk.c 2005-09-15 17:26:56 UTC (rev 17866) @@ -48,6 +48,12 @@
USHORT Magic; /* 0x1FE */ } PARTITION_SECTOR, *PPARTITION_SECTOR;
+typedef struct _REG_DISK_MOUNT_INFO +{ + ULONG Signature; + LARGE_INTEGER StartingOffset; +} REG_DISK_MOUNT_INFO, *PREG_DISK_MOUNT_INFO; + #include <poppack.h>
@@ -89,6 +95,8 @@ HAL_PRIVATE_DISPATCH_VERSION };
+const WCHAR DiskMountString[] = L"\DosDevices\%C:"; + /* FUNCTIONS *****************************************************************/
NTSTATUS @@ -372,15 +380,20 @@ static VOID HalpAssignDrive(IN PUNICODE_STRING PartitionName, IN ULONG DriveNumber, - IN UCHAR DriveType) + IN UCHAR DriveType, + IN ULONG Signature, + IN LARGE_INTEGER StartingOffset, + IN HANDLE hKey) { - WCHAR DriveNameBuffer[8]; + WCHAR DriveNameBuffer[16]; UNICODE_STRING DriveName; ULONG i; + NTSTATUS Status; + REG_DISK_MOUNT_INFO DiskMountInfo;
DPRINT("HalpAssignDrive()\n");
- if ((DriveNumber != AUTO_DRIVE) && (DriveNumber < 24)) + if ((DriveNumber != AUTO_DRIVE) && (DriveNumber < 26)) { /* Force assignment */ if ((ObSystemDeviceMap->DriveMap & (1 << DriveNumber)) != 0) @@ -394,7 +407,7 @@ /* Automatic assignment */ DriveNumber = AUTO_DRIVE;
- for (i = 2; i < 24; i++) + for (i = 2; i < 26; i++) { if ((ObSystemDeviceMap->DriveMap & (1 << i)) == 0) { @@ -428,11 +441,185 @@ PartitionName);
/* Create symbolic link */ - IoCreateSymbolicLink(&DriveName, - PartitionName); + Status = IoCreateSymbolicLink(&DriveName, + PartitionName); + + if (DriveType == DOSDEVICE_DRIVE_FIXED && hKey) + { + DiskMountInfo.Signature = Signature; + DiskMountInfo.StartingOffset = StartingOffset; + swprintf(DriveNameBuffer, DiskMountString, L'A' + DriveNumber); + RtlInitUnicodeString(&DriveName, DriveNameBuffer); + + Status = ZwSetValueKey(hKey, + &DriveName, + 0, + REG_BINARY, + &DiskMountInfo, + sizeof(DiskMountInfo)); + if (!NT_SUCCESS(Status)) + { + DPRINT1("ZwCreateValueKey failed for %wZ, status=%x\n", &DriveName, Status); + } + } }
+ULONG +xHalpGetRDiskCount(VOID) +{ + NTSTATUS Status; + UNICODE_STRING ArcName; + PWCHAR ArcNameBuffer; + OBJECT_ATTRIBUTES ObjectAttributes; + HANDLE DirectoryHandle; + POBJECT_DIRECTORY_INFORMATION DirectoryInfo; + ULONG Skip; + ULONG ResultLength; + ULONG CurrentRDisk; + ULONG RDiskCount; + BOOLEAN First = TRUE; + ULONG Count; + + DirectoryInfo = ExAllocatePool(PagedPool, 2 * PAGE_SIZE); + if (DirectoryInfo == NULL) + { + return 0; + }
+ RtlInitUnicodeString(&ArcName, L"\ArcName"); + InitializeObjectAttributes(&ObjectAttributes, + &ArcName, + 0, + NULL, + NULL); + + Status = ZwOpenDirectoryObject (&DirectoryHandle, + SYMBOLIC_LINK_ALL_ACCESS, + &ObjectAttributes); + if (!NT_SUCCESS(Status)) + { + DPRINT1("ZwOpenDirectoryObject for %wZ failed, status=%lx\n", &ArcName, Status); + ExFreePool(DirectoryInfo); + return 0; + } + + RDiskCount = 0; + Skip = 0; + while (NT_SUCCESS(Status)) + { + Status = NtQueryDirectoryObject (DirectoryHandle, + DirectoryInfo, + 2 * PAGE_SIZE, + FALSE, + First, + &Skip, + &ResultLength); + First = FALSE; + if (NT_SUCCESS(Status)) + { + Count = 0; + while (DirectoryInfo[Count].ObjectName.Buffer) + { + DPRINT("Count %x\n", Count); + DirectoryInfo[Count].ObjectName.Buffer[DirectoryInfo[Count].ObjectName.L ength / sizeof(WCHAR)] = 0; + ArcNameBuffer = DirectoryInfo[Count].ObjectName.Buffer; + if (DirectoryInfo[Count].ObjectName.Length >= sizeof(L"multi(0)disk(0)rdisk(0)") - sizeof(WCHAR) && + !_wcsnicmp(ArcNameBuffer, L"multi(0)disk(0)rdisk(", (sizeof(L"multi(0)disk(0)rdisk(") - sizeof(WCHAR)) / sizeof(WCHAR))) + { + DPRINT("%S\n", ArcNameBuffer); + ArcNameBuffer += (sizeof(L"multi(0)disk(0)rdisk(") - sizeof(WCHAR)) / sizeof(WCHAR); + CurrentRDisk = 0; + while (iswdigit(*ArcNameBuffer)) + { + CurrentRDisk = CurrentRDisk * 10 + *ArcNameBuffer - L'0'; + ArcNameBuffer++; + } + if (!_wcsicmp(ArcNameBuffer, L")") && + CurrentRDisk >= RDiskCount) + { + RDiskCount = CurrentRDisk + 1; + } + } + Count++; + } + } + } + ExFreePool(DirectoryInfo); + return RDiskCount; +} + +NTSTATUS +xHalpGetDiskNumberFromRDisk(ULONG RDisk, PULONG DiskNumber) +{ + WCHAR NameBuffer[80]; + UNICODE_STRING ArcName; + UNICODE_STRING LinkName; + OBJECT_ATTRIBUTES ObjectAttributes; + HANDLE LinkHandle; + NTSTATUS Status; + + swprintf(NameBuffer, + L"\ArcName\multi(0)disk(0)rdisk(%lu)", + RDisk); + + RtlInitUnicodeString(&ArcName, NameBuffer); + InitializeObjectAttributes(&ObjectAttributes, + &ArcName, + 0, + NULL, + NULL); + Status = ZwOpenSymbolicLinkObject(&LinkHandle, + SYMBOLIC_LINK_ALL_ACCESS, + &ObjectAttributes); + if (!NT_SUCCESS(Status)) + { + DPRINT1("ZwOpenSymbolicLinkObject failed for %wZ, status=%lx\n", &ArcName, Status); + return Status; + } + + LinkName.Buffer = NameBuffer; + LinkName.Length = 0; + LinkName.MaximumLength = sizeof(NameBuffer); + Status = ZwQuerySymbolicLinkObject(LinkHandle, + &LinkName, + NULL); + ZwClose(LinkHandle); + if (!NT_SUCCESS(Status)) + { + DPRINT1("ZwQuerySymbolicLinkObject failed, status=%lx\n", Status); + return Status; + } + if (LinkName.Length < sizeof(L"\Device\Harddisk0\Partition0") - sizeof(WCHAR) || + LinkName.Length >= sizeof(NameBuffer)) + { + return STATUS_UNSUCCESSFUL; + } + + NameBuffer[LinkName.Length / sizeof(WCHAR)] = 0; + if (_wcsnicmp(NameBuffer, L"\Device\Harddisk", (sizeof(L"\Device\Harddisk") - sizeof(WCHAR)) / sizeof(WCHAR))) + { + return STATUS_UNSUCCESSFUL; + } + LinkName.Buffer += (sizeof(L"\Device\Harddisk") - sizeof(WCHAR)) / sizeof(WCHAR); + + if (!iswdigit(*LinkName.Buffer)) + { + return STATUS_UNSUCCESSFUL; + } + *DiskNumber = 0; + while (iswdigit(*LinkName.Buffer)) + { + *DiskNumber = *DiskNumber * 10 + *LinkName.Buffer - L'0'; + LinkName.Buffer++; + } + if (_wcsicmp(LinkName.Buffer, L"\Partition0")) + { + return STATUS_UNSUCCESSFUL; + } + return STATUS_SUCCESS; +} + + VOID FASTCALL xHalIoAssignDriveLetters(IN PLOADER_PARAMETER_BLOCK LoaderBlock, IN PSTRING NtDeviceName, @@ -448,19 +635,60 @@ HANDLE FileHandle; PWSTR Buffer1; PWSTR Buffer2; - ULONG i; + ULONG i, j, k; + ULONG DiskNumber; + ULONG RDisk; NTSTATUS Status; - ULONG j; + HANDLE hKey; + ULONG Length; + PKEY_VALUE_PARTIAL_INFORMATION PartialInformation; + PREG_DISK_MOUNT_INFO DiskMountInfo; + ULONG RDiskCount;
DPRINT("xHalIoAssignDriveLetters()\n");
ConfigInfo = IoGetConfigurationInformation();
+ RDiskCount = xHalpGetRDiskCount(); + + DPRINT1("RDiskCount %d\n", RDiskCount); + Buffer1 = (PWSTR)ExAllocatePool(PagedPool, 64 * sizeof(WCHAR)); Buffer2 = (PWSTR)ExAllocatePool(PagedPool, 32 * sizeof(WCHAR)); + + PartialInformation = (PKEY_VALUE_PARTIAL_INFORMATION)ExAllocatePool(PagedPool, + sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(REG_DISK_MOUNT_INFO));
+ DiskMountInfo = (PREG_DISK_MOUNT_INFO) PartialInformation->Data; + + /* Open or Create the 'MountedDevices' key */ + RtlInitUnicodeString(&UnicodeString1, L"\Registry\Machine\SYSTEM\MountedDevices"); + InitializeObjectAttributes(&ObjectAttributes, + &UnicodeString1, + OBJ_CASE_INSENSITIVE, + NULL, + NULL); + Status = ZwOpenKey(&hKey, + KEY_ALL_ACCESS, + &ObjectAttributes); + if (!NT_SUCCESS(Status)) + { + Status = ZwCreateKey(&hKey, + KEY_ALL_ACCESS, + &ObjectAttributes, + 0, + NULL, + REG_OPTION_NON_VOLATILE, + NULL); + } + if (!NT_SUCCESS(Status)) + { + hKey = NULL; + DPRINT1("ZwCreateKey failed for %wZ, status=%x\n", &UnicodeString1, Status); + } + /* Create PhysicalDrive links */ DPRINT("Physical disk drives: %d\n", ConfigInfo->DiskCount); for (i = 0; i < ConfigInfo->DiskCount; i++) @@ -524,6 +752,13 @@ LayoutArray[i] = NULL; continue; } + /* We don't use the RewritePartition value while mounting the disks. + * We use this value for marking pre-assigned (registry) partitions. + */ + for (j = 0; j < LayoutArray[i]->PartitionCount; j++) + { + LayoutArray[i]->PartitionEntry[j].RewritePartition = FALSE; + } }
#ifndef NDEBUG @@ -553,84 +788,234 @@ #endif
/* Assign pre-assigned (registry) partitions */ + if (hKey) + { + for (k = 2; k < 26; k++) + { + swprintf(Buffer1, DiskMountString, L'A' + k); + RtlInitUnicodeString(&UnicodeString1, Buffer1); + Status = ZwQueryValueKey(hKey, + &UnicodeString1, + KeyValuePartialInformation, + PartialInformation, + sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(REG_DISK_MOUNT_INFO), + &Length); + if (NT_SUCCESS(Status) && + PartialInformation->Type == REG_BINARY && + PartialInformation->DataLength == sizeof(REG_DISK_MOUNT_INFO)) + { + DPRINT("%wZ => %08x:%08x%08x\n", &UnicodeString1, DiskMountInfo->Signature, + DiskMountInfo->StartingOffset.u.HighPart, DiskMountInfo->StartingOffset.u.LowPart); + for (i = 0; i < ConfigInfo->DiskCount; i++) + { + DPRINT("%x\n", LayoutArray[i]->Signature); + if (LayoutArray[i] && + LayoutArray[i]->Signature == DiskMountInfo->Signature) + { + for (j = 0; j < LayoutArray[i]->PartitionCount; j++) + { + if (LayoutArray[i]->PartitionEntry[j].StartingOffset.QuadPart == DiskMountInfo->StartingOffset.QuadPart) + { + if (IsRecognizedPartition(LayoutArray[i]->PartitionEntry[j].PartitionType)) + { + swprintf(Buffer2, + L"\Device\Harddisk%d\Partition%d", + i, + LayoutArray[i]->PartitionEntry[j].PartitionNumber); + RtlInitUnicodeString(&UnicodeString2, + Buffer2);
+ /* Assign drive */ + DPRINT(" %wZ\n", &UnicodeString2); + HalpAssignDrive(&UnicodeString2, + k, + DOSDEVICE_DRIVE_FIXED, + DiskMountInfo->Signature, + DiskMountInfo->StartingOffset, + NULL); + /* Mark the partition as assigned */ + LayoutArray[i]->PartitionEntry[j].RewritePartition = TRUE; + } + break; + } + } + break; + } + } + } + } + }
/* Assign bootable partition on first harddisk */ DPRINT("Assigning bootable primary partition on first harddisk:\n"); - if (ConfigInfo->DiskCount > 0) + if (RDiskCount > 0) { - if (LayoutArray[0]) + Status = xHalpGetDiskNumberFromRDisk(0, &DiskNumber); + if (NT_SUCCESS(Status) && + DiskNumber < ConfigInfo->DiskCount && + LayoutArray[DiskNumber]) { /* Search for bootable partition */ - for (j = 0; j < LayoutArray[0]->PartitionCount; j++) + for (j = 0; j < PARTITION_TBL_SIZE && j < LayoutArray[DiskNumber]->PartitionCount; j++) { - if ((LayoutArray[0]->PartitionEntry[j].BootIndicator == TRUE) && - IsRecognizedPartition(LayoutArray[0]->PartitionEntry[j].PartitionType)) + if ((LayoutArray[DiskNumber]->PartitionEntry[j].BootIndicator == TRUE) && + IsRecognizedPartition(LayoutArray[DiskNumber]->PartitionEntry[j].Partiti onType)) + { + if (LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition == FALSE) + { + swprintf(Buffer2, + L"\Device\Harddisk%lu\Partition%d", + DiskNumber, + LayoutArray[DiskNumber]->PartitionEntry[j].PartitionNumber); + RtlInitUnicodeString(&UnicodeString2, + Buffer2); + + /* Assign drive */ + DPRINT1(" %wZ\n", &UnicodeString2); + HalpAssignDrive(&UnicodeString2, + AUTO_DRIVE, + DOSDEVICE_DRIVE_FIXED, + LayoutArray[DiskNumber]->Signature, + LayoutArray[DiskNumber]->PartitionEntry[j].StartingOffset, + hKey); + /* Mark the partition as assigned */ + LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition = TRUE; + } + break; + } + } + } + } + + /* Assign remaining primary partitions */ + DPRINT("Assigning remaining primary partitions:\n"); + for (RDisk = 0; RDisk < RDiskCount; RDisk++) + { + Status = xHalpGetDiskNumberFromRDisk(RDisk, &DiskNumber); + if (NT_SUCCESS(Status) && + DiskNumber < ConfigInfo->DiskCount && + LayoutArray[DiskNumber]) + { + /* Search for primary partitions */ + for (j = 0; (j < PARTITION_TBL_SIZE) && (j < LayoutArray[DiskNumber]->PartitionCount); j++) + { + if (LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition == FALSE && + IsRecognizedPartition(LayoutArray[DiskNumber]->PartitionEntry[j].Partiti onType)) { - swprintf(Buffer2, - L"\Device\Harddisk0\Partition%d", - LayoutArray[0]->PartitionEntry[j].PartitionNumber); + swprintf(Buffer2, + L"\Device\Harddisk%d\Partition%d", + DiskNumber, + LayoutArray[DiskNumber]->PartitionEntry[j].PartitionNumber); RtlInitUnicodeString(&UnicodeString2, Buffer2);
/* Assign drive */ - DPRINT(" %wZ\n", &UnicodeString2); + DPRINT(" %wZ\n", + &UnicodeString2); HalpAssignDrive(&UnicodeString2, AUTO_DRIVE, - DOSDEVICE_DRIVE_FIXED); + DOSDEVICE_DRIVE_FIXED, + LayoutArray[DiskNumber]->Signature, + LayoutArray[DiskNumber]->PartitionEntry[j].StartingOffset, + hKey); + /* Mark the partition as assigned */ + LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition = TRUE; } } } }
- /* Assign remaining primary partitions */ + /* Assign extended (logical) partitions */ + DPRINT("Assigning extended (logical) partitions:\n"); + for (RDisk = 0; RDisk < RDiskCount; RDisk++) + { + Status = xHalpGetDiskNumberFromRDisk(RDisk, &DiskNumber); + if (NT_SUCCESS(Status) && + DiskNumber < ConfigInfo->DiskCount && + LayoutArray[DiskNumber]) + { + /* Search for extended partitions */ + for (j = PARTITION_TBL_SIZE; j < LayoutArray[DiskNumber]->PartitionCount; j++) + { + if (IsRecognizedPartition(LayoutArray[DiskNumber]->PartitionEntry[j].Partit ionType) && + LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition == FALSE && + LayoutArray[DiskNumber]->PartitionEntry[j].PartitionNumber != 0) + { + swprintf(Buffer2, + L"\Device\Harddisk%d\Partition%d", + DiskNumber, + LayoutArray[DiskNumber]->PartitionEntry[j].PartitionNumber); + RtlInitUnicodeString(&UnicodeString2, + Buffer2); + + /* Assign drive */ + DPRINT(" %wZ\n", + &UnicodeString2); + HalpAssignDrive(&UnicodeString2, + AUTO_DRIVE, + DOSDEVICE_DRIVE_FIXED, + LayoutArray[DiskNumber]->Signature, + LayoutArray[DiskNumber]->PartitionEntry[j].StartingOffset, + hKey); + /* Mark the partition as assigned */ + LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition = TRUE; + } + } + } + } + + /* Assign remaining primary partitions without an arc-name */ DPRINT("Assigning remaining primary partitions:\n"); - for (i = 0; i < ConfigInfo->DiskCount; i++) + for (DiskNumber = 0; DiskNumber < ConfigInfo->DiskCount; DiskNumber++) { - if (LayoutArray[i]) + if (LayoutArray[DiskNumber]) { /* Search for primary partitions */ - for (j = 0; (j < PARTITION_TBL_SIZE) && (j < LayoutArray[i]->PartitionCount); j++) + for (j = 0; (j < PARTITION_TBL_SIZE) && (j < LayoutArray[DiskNumber]->PartitionCount); j++) { - if ((i == 0) && (LayoutArray[i]->PartitionEntry[j].BootIndicator == TRUE)) - continue; - - if (IsRecognizedPartition(LayoutArray[i]->PartitionEntry[j].PartitionType)) + if (LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition == FALSE && + IsRecognizedPartition(LayoutArray[DiskNumber]->PartitionEntry[j].Partiti onType)) { - swprintf(Buffer2, + swprintf(Buffer2, L"\Device\Harddisk%d\Partition%d", - i, - LayoutArray[i]->PartitionEntry[j].PartitionNumber); + DiskNumber, + LayoutArray[DiskNumber]->PartitionEntry[j].PartitionNumber); RtlInitUnicodeString(&UnicodeString2, Buffer2);
/* Assign drive */ DPRINT(" %wZ\n", &UnicodeString2); - HalpAssignDrive(&UnicodeString2, - AUTO_DRIVE, - DOSDEVICE_DRIVE_FIXED); + HalpAssignDrive(&UnicodeString2, + AUTO_DRIVE, + DOSDEVICE_DRIVE_FIXED, + LayoutArray[DiskNumber]->Signature, + LayoutArray[DiskNumber]->PartitionEntry[j].StartingOffset, + hKey); + /* Mark the partition as assigned */ + LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition = TRUE; } } } }
- /* Assign extended (logical) partitions */ + /* Assign extended (logical) partitions without an arc-name */ DPRINT("Assigning extended (logical) partitions:\n"); - for (i = 0; i < ConfigInfo->DiskCount; i++) + for (DiskNumber = 0; DiskNumber < ConfigInfo->DiskCount; DiskNumber++) { - if (LayoutArray[i]) + if (LayoutArray[DiskNumber]) { /* Search for extended partitions */ - for (j = PARTITION_TBL_SIZE; j < LayoutArray[i]->PartitionCount; j++) + for (j = PARTITION_TBL_SIZE; j < LayoutArray[DiskNumber]->PartitionCount; j++) { - if (IsRecognizedPartition(LayoutArray[i]->PartitionEntry[j].PartitionType) && - (LayoutArray[i]->PartitionEntry[j].PartitionNumber != 0)) + if (IsRecognizedPartition(LayoutArray[DiskNumber]->PartitionEntry[j].Partit ionType) && + LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition == FALSE && + LayoutArray[DiskNumber]->PartitionEntry[j].PartitionNumber != 0) { - swprintf(Buffer2, + swprintf(Buffer2, L"\Device\Harddisk%d\Partition%d", - i, - LayoutArray[i]->PartitionEntry[j].PartitionNumber); + DiskNumber, + LayoutArray[DiskNumber]->PartitionEntry[j].PartitionNumber); RtlInitUnicodeString(&UnicodeString2, Buffer2);
@@ -639,7 +1024,12 @@ &UnicodeString2); HalpAssignDrive(&UnicodeString2, AUTO_DRIVE, - DOSDEVICE_DRIVE_FIXED); + DOSDEVICE_DRIVE_FIXED, + LayoutArray[DiskNumber]->Signature, + LayoutArray[DiskNumber]->PartitionEntry[j].StartingOffset, + hKey); + /* Mark the partition as assigned */ + LayoutArray[DiskNumber]->PartitionEntry[j].RewritePartition = TRUE; } } } @@ -666,7 +1056,10 @@ &UnicodeString2); HalpAssignDrive(&UnicodeString2, AUTO_DRIVE, - DOSDEVICE_DRIVE_REMOVABLE); + DOSDEVICE_DRIVE_REMOVABLE, + 0, + (LARGE_INTEGER)0LL, + hKey); } } } @@ -694,7 +1087,10 @@ &UnicodeString1); HalpAssignDrive(&UnicodeString1, (i < 2) ? i : AUTO_DRIVE, - DOSDEVICE_DRIVE_REMOVABLE); + DOSDEVICE_DRIVE_REMOVABLE, + 0, + (LARGE_INTEGER)0LL, + hKey); }
/* Assign cdrom drives */ @@ -711,13 +1107,21 @@ DPRINT(" %wZ\n", &UnicodeString1); HalpAssignDrive(&UnicodeString1, AUTO_DRIVE, - DOSDEVICE_DRIVE_CDROM); + DOSDEVICE_DRIVE_CDROM, + 0, + (LARGE_INTEGER)0LL, + hKey); }
/* Anything else to do? */
+ ExFreePool(PartialInformation); ExFreePool(Buffer2); ExFreePool(Buffer1); + if (hKey) + { + ZwClose(hKey); + } }
@@ -1317,6 +1721,7 @@ PartitionSector->Magic = PARTITION_MAGIC; }
+ PartitionSector->Signature = PartitionBuffer->Signature; /* Update partition sector entries */ for (j = 0; j < 4; j++) {
-
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