* PROGRAMMER: Pierre Schweitzer (pierre.schweitzer@reactos.org)
*/
-/* INCLUDES *****************************************************************/
-
#include "mntmgr.h"
+#define MAX_DEVICES 0x3E8 /* Matches 1000 devices */
+
#define NDEBUG
#include <debug.h>
PMOUNTMGR_DRIVE_LETTER_TARGET DriveLetterTarget;
MOUNTMGR_DRIVE_LETTER_INFORMATION DriveLetterInformation;
- Stack = IoGetNextIrpStackLocation(Irp);
+ Stack = IoGetCurrentIrpStackLocation(Irp);
/* Validate input */
if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_DRIVE_LETTER_TARGET) ||
MountMgrQueryDosVolumePath(IN PDEVICE_EXTENSION DeviceExtension,
IN PIRP Irp)
{
- UNREFERENCED_PARAMETER(DeviceExtension);
- UNREFERENCED_PARAMETER(Irp);
- return STATUS_NOT_IMPLEMENTED;
+ NTSTATUS Status;
+ ULONG DevicesFound;
+ PIO_STACK_LOCATION Stack;
+ PLIST_ENTRY SymlinksEntry;
+ UNICODE_STRING SymbolicName;
+ PMOUNTMGR_TARGET_NAME Target;
+ PWSTR DeviceString, OldBuffer;
+ USHORT DeviceLength, OldLength;
+ PDEVICE_INFORMATION DeviceInformation;
+ PSYMLINK_INFORMATION SymlinkInformation;
+ PASSOCIATED_DEVICE_ENTRY AssociatedDevice;
+
+ Stack = IoGetCurrentIrpStackLocation(Irp);
+
+ /* Validate input size */
+ if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_TARGET_NAME))
+ {
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Ensure we have received UNICODE_STRING */
+ Target = (PMOUNTMGR_TARGET_NAME)Irp->AssociatedIrp.SystemBuffer;
+ if (Target->DeviceNameLength & 1)
+ {
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Validate the entry structure size */
+ if (Target->DeviceNameLength + sizeof(UNICODE_NULL) > Stack->Parameters.DeviceIoControl.InputBufferLength)
+ {
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Ensure we can at least return needed size */
+ if (Stack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(ULONG))
+ {
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Construct string for query */
+ SymbolicName.Length = Target->DeviceNameLength;
+ SymbolicName.MaximumLength = Target->DeviceNameLength + sizeof(UNICODE_NULL);
+ SymbolicName.Buffer = Target->DeviceName;
+
+ /* Find device with our info */
+ Status = FindDeviceInfo(DeviceExtension, &SymbolicName, FALSE, &DeviceInformation);
+ if (!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
+
+ DeviceLength = 0;
+ DeviceString = NULL;
+ DevicesFound = 0;
+
+ /* Try to find associated device info */
+ while (TRUE)
+ {
+ for (SymlinksEntry = DeviceInformation->SymbolicLinksListHead.Flink;
+ SymlinksEntry != &(DeviceInformation->SymbolicLinksListHead);
+ SymlinksEntry = SymlinksEntry->Flink)
+ {
+ SymlinkInformation = CONTAINING_RECORD(SymlinksEntry, SYMLINK_INFORMATION, SymbolicLinksListEntry);
+
+ /* Try to find with drive letter */
+ if (MOUNTMGR_IS_DRIVE_LETTER(&SymlinkInformation->Name) && SymlinkInformation->Online)
+ {
+ break;
+ }
+ }
+
+ /* We didn't find, break */
+ if (SymlinksEntry == &(DeviceInformation->SymbolicLinksListHead))
+ {
+ break;
+ }
+
+ /* It doesn't have associated device, go to fallback method */
+ if (IsListEmpty(&DeviceInformation->AssociatedDevicesHead))
+ {
+ goto TryWithVolumeName;
+ }
+
+ /* Create a string with the information about the device */
+ AssociatedDevice = CONTAINING_RECORD(&(DeviceInformation->SymbolicLinksListHead), ASSOCIATED_DEVICE_ENTRY, AssociatedDevicesEntry);
+ OldLength = DeviceLength;
+ OldBuffer = DeviceString;
+ DeviceLength += AssociatedDevice->String.Length;
+ DeviceString = AllocatePool(DeviceLength);
+ if (!DeviceString)
+ {
+ if (OldBuffer)
+ {
+ FreePool(OldBuffer);
+ }
+
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* Store our info and previous if any */
+ RtlCopyMemory(DeviceString, AssociatedDevice->String.Buffer, AssociatedDevice->String.Length);
+ if (OldBuffer)
+ {
+ RtlCopyMemory(&DeviceString[AssociatedDevice->String.Length / sizeof(WCHAR)], OldBuffer, OldLength);
+ FreePool(OldBuffer);
+ }
+
+ /* Count and continue looking */
+ ++DevicesFound;
+ DeviceInformation = AssociatedDevice->DeviceInformation;
+
+ /* If too many devices, try another way */
+ if (DevicesFound > MAX_DEVICES) /* 1000 */
+ {
+ goto TryWithVolumeName;
+ }
+ }
+
+ /* Reallocate our string, so that we can prepend disk letter */
+ OldBuffer = DeviceString;
+ OldLength = DeviceLength;
+ DeviceLength += 2 * sizeof(WCHAR);
+ DeviceString = AllocatePool(DeviceLength);
+ if (!DeviceString)
+ {
+ if (OldBuffer)
+ {
+ FreePool(OldBuffer);
+ }
+
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* Get the letter */
+ DeviceString[0] = SymlinkInformation->Name.Buffer[12];
+ DeviceString[1] = L':';
+
+ /* And copy the rest */
+ if (OldBuffer)
+ {
+ RtlCopyMemory(&DeviceString[2], OldBuffer, OldLength);
+ FreePool(OldBuffer);
+ }
+
+TryWithVolumeName:
+ /* If we didn't find anything, try differently */
+ if (DeviceLength < 2 * sizeof(WCHAR) || DeviceString[1] != L':')
+ {
+ if (DeviceString)
+ {
+ FreePool(DeviceString);
+ DeviceLength = 0;
+ }
+
+ /* Try to find a volume name matching */
+ for (SymlinksEntry = DeviceInformation->SymbolicLinksListHead.Flink;
+ SymlinksEntry != &(DeviceInformation->SymbolicLinksListHead);
+ SymlinksEntry = SymlinksEntry->Flink)
+ {
+ SymlinkInformation = CONTAINING_RECORD(SymlinksEntry, SYMLINK_INFORMATION, SymbolicLinksListEntry);
+
+ if (MOUNTMGR_IS_VOLUME_NAME(&SymlinkInformation->Name))
+ {
+ break;
+ }
+ }
+
+ /* If found copy */
+ if (SymlinksEntry != &(DeviceInformation->SymbolicLinksListHead))
+ {
+ DeviceLength = SymlinkInformation->Name.Length;
+ DeviceString = AllocatePool(DeviceLength);
+ if (!DeviceString)
+ {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ RtlCopyMemory(DeviceString, SymlinkInformation->Name.Buffer, DeviceLength);
+ /* Ensure we are in the right namespace; [1] can be ? */
+ DeviceString[1] = L'\\';
+ }
+ }
+
+ /* If we found something */
+ if (DeviceString)
+ {
+ /* At least, we will return our length */
+ ((PMOUNTMGR_VOLUME_PATHS)Irp->AssociatedIrp.SystemBuffer)->MultiSzLength = DeviceLength;
+ /* MOUNTMGR_VOLUME_PATHS is a string + a ULONG */
+ Irp->IoStatus.Information = DeviceLength + sizeof(ULONG);
+
+ /* If we have enough room for copying the string */
+ if (sizeof(ULONG) + DeviceLength <= Stack->Parameters.DeviceIoControl.OutputBufferLength)
+ {
+ /* Copy it */
+ if (DeviceLength)
+ {
+ RtlCopyMemory(((PMOUNTMGR_VOLUME_PATHS)Irp->AssociatedIrp.SystemBuffer)->MultiSz, DeviceString, DeviceLength);
+ }
+
+ /* And double zero at its end - this is needed in case of multiple paths which are separated by a single 0 */
+ FreePool(DeviceString);
+ ((PMOUNTMGR_VOLUME_PATHS)Irp->AssociatedIrp.SystemBuffer)->MultiSz[DeviceLength / sizeof(WCHAR)] = 0;
+ ((PMOUNTMGR_VOLUME_PATHS)Irp->AssociatedIrp.SystemBuffer)->MultiSz[DeviceLength / sizeof(WCHAR) + 1] = 0;
+
+ return STATUS_SUCCESS;
+ }
+ else
+ {
+ /* Just return appropriate size and leave */
+ FreePool(DeviceString);
+ Irp->IoStatus.Information = sizeof(ULONG);
+ return STATUS_BUFFER_OVERFLOW;
+ }
+ }
+
+ /* Fail */
+ return STATUS_NOT_FOUND;
}
NTSTATUS
PMOUNTMGR_TARGET_NAME Target;
PDEVICE_INFORMATION DeviceInformation;
- Stack = IoGetNextIrpStackLocation(Irp);
+ Stack = IoGetCurrentIrpStackLocation(Irp);
/* Validate input */
if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_TARGET_NAME))
UNICODE_STRING SymbolicName;
PMOUNTMGR_TARGET_NAME Target;
- Stack = IoGetNextIrpStackLocation(Irp);
+ Stack = IoGetCurrentIrpStackLocation(Irp);
/* Validate input */
if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_TARGET_NAME))
PMOUNTMGR_MOUNT_POINT MountPoint;
UNICODE_STRING SymbolicName, DeviceName;
- Stack = IoGetNextIrpStackLocation(Irp);
+ Stack = IoGetCurrentIrpStackLocation(Irp);
/* Validate input... */
if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_MOUNT_POINT))
PMOUNTMGR_MOUNT_POINTS MountPoints;
UNICODE_STRING SymbolicName, DeviceName;
- Stack = IoGetNextIrpStackLocation(Irp);
+ Stack = IoGetCurrentIrpStackLocation(Irp);
/* Validate input */
if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_MOUNT_POINT))
POBJECT_NAME_INFORMATION ObjectNameInfoPtr = NULL;
UNICODE_STRING SourceVolumeName, TargetDeviceName;
- Stack = IoGetNextIrpStackLocation(Irp);
+ Stack = IoGetCurrentIrpStackLocation(Irp);
/* Validate input */
if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_VOLUME_MOUNT_POINT))
}
/* Reference it */
- Status = ObReferenceObjectByHandle(Handle, 0, IoFileObjectType, KernelMode, (PVOID *)&FileObject, NULL);
+ Status = ObReferenceObjectByHandle(Handle, 0, *IoFileObjectType, KernelMode, (PVOID *)&FileObject, NULL);
if (!NT_SUCCESS(Status))
{
goto Cleanup;
return Status;
}
+/*
+ * @implemented
+ */
NTSTATUS
MountMgrVolumeMountPointCreated(IN PDEVICE_EXTENSION DeviceExtension,
IN PIRP Irp,
IN NTSTATUS LockStatus)
{
- UNREFERENCED_PARAMETER(DeviceExtension);
- UNREFERENCED_PARAMETER(Irp);
- UNREFERENCED_PARAMETER(LockStatus);
- return STATUS_NOT_IMPLEMENTED;
+ LONG Offset;
+ BOOLEAN Found;
+ NTSTATUS Status;
+ HANDLE RemoteDatabase;
+ PMOUNTDEV_UNIQUE_ID UniqueId;
+ PDATABASE_ENTRY DatabaseEntry;
+ PASSOCIATED_DEVICE_ENTRY AssociatedEntry;
+ PDEVICE_INFORMATION DeviceInformation, TargetDeviceInformation;
+ UNICODE_STRING LinkTarget, SourceDeviceName, SourceSymbolicName, TargetVolumeName, VolumeName, DbName;
+
+ /* Initialize string */
+ LinkTarget.Length = 0;
+ LinkTarget.MaximumLength = 0xC8;
+ LinkTarget.Buffer = AllocatePool(LinkTarget.MaximumLength);
+ if (LinkTarget.Buffer == NULL)
+ {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* If the mount point was created, then, it changed!
+ * Also use it to query some information
+ */
+ Status = MountMgrVolumeMountPointChanged(DeviceExtension, Irp, LockStatus, &SourceDeviceName, &SourceSymbolicName, &TargetVolumeName);
+ /* Pending means DB are under synchronization, bail out */
+ if (Status == STATUS_PENDING)
+ {
+ FreePool(LinkTarget.Buffer);
+ FreePool(SourceDeviceName.Buffer);
+ FreePool(SourceSymbolicName.Buffer);
+ return STATUS_SUCCESS;
+ }
+ else if (!NT_SUCCESS(Status))
+ {
+ FreePool(LinkTarget.Buffer);
+ return Status;
+ }
+
+ /* Query the device information */
+ Status = FindDeviceInfo(DeviceExtension, &SourceDeviceName, FALSE, &DeviceInformation);
+ if (!NT_SUCCESS(Status))
+ {
+ /* If it failed, first try to get volume name */
+ Status = QueryVolumeName(0, NULL, &SourceDeviceName, &LinkTarget, &VolumeName);
+ if (!NT_SUCCESS(Status))
+ {
+ /* Then, try to read the symlink */
+ Status = MountMgrQuerySymbolicLink(&SourceDeviceName, &LinkTarget);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(LinkTarget.Buffer);
+ FreePool(SourceDeviceName.Buffer);
+ FreePool(SourceSymbolicName.Buffer);
+ return Status;
+ }
+ }
+ else
+ {
+ FreePool(VolumeName.Buffer);
+ }
+
+ FreePool(SourceDeviceName.Buffer);
+
+ SourceDeviceName.Length = LinkTarget.Length;
+ SourceDeviceName.MaximumLength = LinkTarget.MaximumLength;
+ SourceDeviceName.Buffer = LinkTarget.Buffer;
+
+ /* Now that we have the correct source, reattempt to query information */
+ Status = FindDeviceInfo(DeviceExtension, &SourceDeviceName, FALSE, &DeviceInformation);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(SourceDeviceName.Buffer);
+ FreePool(SourceSymbolicName.Buffer);
+ return Status;
+ }
+ }
+
+ FreePool(SourceDeviceName.Buffer);
+
+ /* Get information about target device */
+ Status = FindDeviceInfo(DeviceExtension, &TargetVolumeName, FALSE, &TargetDeviceInformation);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(SourceSymbolicName.Buffer);
+ return Status;
+ }
+
+ /* Notify if not disabled */
+ if (!TargetDeviceInformation->SkipNotifications)
+ {
+ PostOnlineNotification(DeviceExtension, &TargetDeviceInformation->SymbolicName);
+ }
+
+ /* Open the remote database */
+ RemoteDatabase = OpenRemoteDatabase(DeviceInformation, TRUE);
+ if (RemoteDatabase == 0)
+ {
+ FreePool(SourceSymbolicName.Buffer);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* Browse all the entries */
+ Offset = 0;
+ Found = FALSE;
+ for (;;)
+ {
+ DatabaseEntry = GetRemoteDatabaseEntry(RemoteDatabase, Offset);
+ if (DatabaseEntry == NULL)
+ {
+ break;
+ }
+
+ /* Try to find ourselves */
+ DbName.MaximumLength = DatabaseEntry->SymbolicNameLength;
+ DbName.Length = DbName.MaximumLength;
+ DbName.Buffer = (PWSTR)((ULONG_PTR)DatabaseEntry + DatabaseEntry->SymbolicNameOffset);
+ if (RtlEqualUnicodeString(&TargetVolumeName, &DbName, TRUE))
+ {
+ /* Reference ourselves and update the entry */
+ ++DatabaseEntry->EntryReferences;
+ Status = WriteRemoteDatabaseEntry(RemoteDatabase, Offset, DatabaseEntry);
+ FreePool(DatabaseEntry);
+ Found = TRUE;
+ break;
+ }
+
+ Offset += DatabaseEntry->EntrySize;
+ FreePool(DatabaseEntry);
+ }
+
+ /* We couldn't find ourselves, we'll have to add ourselves */
+ if (!Found)
+ {
+ ULONG EntrySize;
+ PUNIQUE_ID_REPLICATE UniqueIdReplicate;
+
+ /* Query the device unique ID */
+ Status = QueryDeviceInformation(&TargetVolumeName, NULL, &UniqueId, NULL, NULL, NULL, NULL, NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(SourceSymbolicName.Buffer);
+ CloseRemoteDatabase(RemoteDatabase);
+ return Status;
+ }
+
+ /* Allocate a database entry */
+ EntrySize = UniqueId->UniqueIdLength + TargetVolumeName.Length + sizeof(DATABASE_ENTRY);
+ DatabaseEntry = AllocatePool(EntrySize);
+ if (DatabaseEntry == NULL)
+ {
+ FreePool(UniqueId);
+ FreePool(SourceSymbolicName.Buffer);
+ CloseRemoteDatabase(RemoteDatabase);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* Fill it in */
+ DatabaseEntry->EntrySize = EntrySize;
+ DatabaseEntry->EntryReferences = 1;
+ DatabaseEntry->SymbolicNameOffset = sizeof(DATABASE_ENTRY);
+ DatabaseEntry->SymbolicNameLength = TargetVolumeName.Length;
+ DatabaseEntry->UniqueIdOffset = TargetVolumeName.Length + sizeof(DATABASE_ENTRY);
+ DatabaseEntry->UniqueIdLength = UniqueId->UniqueIdLength;
+ RtlCopyMemory((PVOID)((ULONG_PTR)DatabaseEntry + sizeof(DATABASE_ENTRY)), TargetVolumeName.Buffer, DatabaseEntry->SymbolicNameLength);
+ RtlCopyMemory((PVOID)((ULONG_PTR)DatabaseEntry + DatabaseEntry->UniqueIdOffset), UniqueId->UniqueId, UniqueId->UniqueIdLength);
+
+ /* And write it down */
+ Status = AddRemoteDatabaseEntry(RemoteDatabase, DatabaseEntry);
+ FreePool(DatabaseEntry);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(UniqueId);
+ FreePool(SourceSymbolicName.Buffer);
+ CloseRemoteDatabase(RemoteDatabase);
+ return Status;
+ }
+
+ /* And now, allocate an Unique ID item */
+ UniqueIdReplicate = AllocatePool(sizeof(UNIQUE_ID_REPLICATE));
+ if (UniqueIdReplicate == NULL)
+ {
+ FreePool(UniqueId);
+ FreePool(SourceSymbolicName.Buffer);
+ CloseRemoteDatabase(RemoteDatabase);
+ return Status;
+ }
+
+ /* To associate it with the device */
+ UniqueIdReplicate->UniqueId = UniqueId;
+ InsertTailList(&DeviceInformation->ReplicatedUniqueIdsListHead, &UniqueIdReplicate->ReplicatedUniqueIdsListEntry);
+ }
+
+ /* We're done with the remote database */
+ CloseRemoteDatabase(RemoteDatabase);
+
+ /* Check we were find writing the entry */
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(SourceSymbolicName.Buffer);
+ return Status;
+ }
+
+ /* This is the end, allocate an associated entry */
+ AssociatedEntry = AllocatePool(sizeof(ASSOCIATED_DEVICE_ENTRY));
+ if (AssociatedEntry == NULL)
+ {
+ FreePool(SourceSymbolicName.Buffer);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* Initialize its source name string */
+ AssociatedEntry->String.Length = SourceSymbolicName.Length;
+ AssociatedEntry->String.MaximumLength = AssociatedEntry->String.Length + sizeof(UNICODE_NULL);
+ AssociatedEntry->String.Buffer = AllocatePool(AssociatedEntry->String.MaximumLength);
+ if (AssociatedEntry->String.Buffer == NULL)
+ {
+ FreePool(AssociatedEntry);
+ FreePool(SourceSymbolicName.Buffer);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* Copy data & insert in list */
+ RtlCopyMemory(AssociatedEntry->String.Buffer, SourceSymbolicName.Buffer, SourceSymbolicName.Length);
+ AssociatedEntry->String.Buffer[SourceSymbolicName.Length / sizeof(WCHAR)] = UNICODE_NULL;
+ AssociatedEntry->DeviceInformation = DeviceInformation;
+ InsertTailList(&TargetDeviceInformation->AssociatedDevicesHead, &AssociatedEntry->AssociatedDevicesEntry);
+
+ /* We're done! */
+ FreePool(SourceSymbolicName.Buffer);
+ return STATUS_SUCCESS;
}
+/*
+ * @implemented
+ */
+
NTSTATUS
MountMgrVolumeMountPointDeleted(IN PDEVICE_EXTENSION DeviceExtension,
IN PIRP Irp,
IN NTSTATUS LockStatus)
{
- UNREFERENCED_PARAMETER(DeviceExtension);
- UNREFERENCED_PARAMETER(Irp);
- UNREFERENCED_PARAMETER(LockStatus);
- return STATUS_NOT_IMPLEMENTED;
+ LONG Offset;
+ NTSTATUS Status;
+ PLIST_ENTRY Entry;
+ HANDLE RemoteDatabase;
+ PDATABASE_ENTRY DatabaseEntry;
+ PUNIQUE_ID_REPLICATE UniqueIdReplicate;
+ PASSOCIATED_DEVICE_ENTRY AssociatedEntry;
+ PDEVICE_INFORMATION DeviceInformation, TargetDeviceInformation;
+ UNICODE_STRING LinkTarget, SourceDeviceName, SourceSymbolicName, TargetVolumeName, VolumeName, DbName;
+
+ /* Initialize string */
+ LinkTarget.Length = 0;
+ LinkTarget.MaximumLength = 0xC8;
+ LinkTarget.Buffer = AllocatePool(LinkTarget.MaximumLength);
+ if (LinkTarget.Buffer == NULL)
+ {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* If the mount point was deleted, then, it changed!
+ * Also use it to query some information
+ */
+ Status = MountMgrVolumeMountPointChanged(DeviceExtension, Irp, LockStatus, &SourceDeviceName, &SourceSymbolicName, &TargetVolumeName);
+ /* Pending means DB are under synchronization, bail out */
+ if (Status == STATUS_PENDING)
+ {
+ FreePool(LinkTarget.Buffer);
+ FreePool(SourceDeviceName.Buffer);
+ FreePool(SourceSymbolicName.Buffer);
+ return STATUS_SUCCESS;
+ }
+ else if (!NT_SUCCESS(Status))
+ {
+ FreePool(LinkTarget.Buffer);
+ return Status;
+ }
+
+ /* Query the device information */
+ Status = FindDeviceInfo(DeviceExtension, &SourceDeviceName, FALSE, &DeviceInformation);
+ if (!NT_SUCCESS(Status))
+ {
+ /* If it failed, first try to get volume name */
+ Status = QueryVolumeName(0, NULL, &SourceDeviceName, &LinkTarget, &VolumeName);
+ if (!NT_SUCCESS(Status))
+ {
+ /* Then, try to read the symlink */
+ Status = MountMgrQuerySymbolicLink(&SourceDeviceName, &LinkTarget);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(LinkTarget.Buffer);
+ FreePool(SourceDeviceName.Buffer);
+ FreePool(SourceSymbolicName.Buffer);
+ return Status;
+ }
+ }
+ else
+ {
+ FreePool(VolumeName.Buffer);
+ }
+
+ FreePool(SourceDeviceName.Buffer);
+
+ SourceDeviceName.Length = LinkTarget.Length;
+ SourceDeviceName.MaximumLength = LinkTarget.MaximumLength;
+ SourceDeviceName.Buffer = LinkTarget.Buffer;
+
+ /* Now that we have the correct source, reattempt to query information */
+ Status = FindDeviceInfo(DeviceExtension, &SourceDeviceName, FALSE, &DeviceInformation);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(SourceDeviceName.Buffer);
+ FreePool(SourceSymbolicName.Buffer);
+ return Status;
+ }
+ }
+
+ FreePool(SourceDeviceName.Buffer);
+
+ /* Get information about target device */
+ Status = FindDeviceInfo(DeviceExtension, &TargetVolumeName, FALSE, &TargetDeviceInformation);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(SourceSymbolicName.Buffer);
+ return Status;
+ }
+
+ /* Open the remote database */
+ RemoteDatabase = OpenRemoteDatabase(DeviceInformation, TRUE);
+ if (RemoteDatabase == 0)
+ {
+ FreePool(SourceSymbolicName.Buffer);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* Browse all the entries */
+ Offset = 0;
+ for (;;)
+ {
+ DatabaseEntry = GetRemoteDatabaseEntry(RemoteDatabase, Offset);
+ if (DatabaseEntry == NULL)
+ {
+ /* We didn't find ourselves, that's infortunate! */
+ FreePool(SourceSymbolicName.Buffer);
+ CloseRemoteDatabase(RemoteDatabase);
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Try to find ourselves */
+ DbName.MaximumLength = DatabaseEntry->SymbolicNameLength;
+ DbName.Length = DbName.MaximumLength;
+ DbName.Buffer = (PWSTR)((ULONG_PTR)DatabaseEntry + DatabaseEntry->SymbolicNameOffset);
+ if (RtlEqualUnicodeString(&TargetVolumeName, &DbName, TRUE))
+ {
+ break;
+ }
+
+ Offset += DatabaseEntry->EntrySize;
+ FreePool(DatabaseEntry);
+ }
+
+ /* Dereference ourselves */
+ DatabaseEntry->EntryReferences--;
+ if (DatabaseEntry->EntryReferences == 0)
+ {
+ /* If we're still referenced, just update the entry */
+ Status = WriteRemoteDatabaseEntry(RemoteDatabase, Offset, DatabaseEntry);
+ }
+ else
+ {
+ /* Otherwise, delete the entry */
+ Status = DeleteRemoteDatabaseEntry(RemoteDatabase, Offset);
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(DatabaseEntry);
+ FreePool(SourceSymbolicName.Buffer);
+ CloseRemoteDatabase(RemoteDatabase);
+ return Status;
+ }
+
+ /* Also, delete our unique ID replicated record */
+ for (Entry = DeviceInformation->ReplicatedUniqueIdsListHead.Flink;
+ Entry != &DeviceInformation->ReplicatedUniqueIdsListHead;
+ Entry = Entry->Flink)
+ {
+ UniqueIdReplicate = CONTAINING_RECORD(Entry, UNIQUE_ID_REPLICATE, ReplicatedUniqueIdsListEntry);
+
+ if (UniqueIdReplicate->UniqueId->UniqueIdLength == DatabaseEntry->UniqueIdLength &&
+ RtlCompareMemory(UniqueIdReplicate->UniqueId->UniqueId,
+ (PVOID)((ULONG_PTR)DatabaseEntry + DatabaseEntry->UniqueIdOffset),
+ DatabaseEntry->UniqueIdLength) == DatabaseEntry->UniqueIdLength)
+ {
+ break;
+ }
+ }
+
+ /* It has to exist! */
+ if (Entry == &DeviceInformation->ReplicatedUniqueIdsListHead)
+ {
+ FreePool(DatabaseEntry);
+ FreePool(SourceSymbolicName.Buffer);
+ CloseRemoteDatabase(RemoteDatabase);
+ return STATUS_UNSUCCESSFUL;
+ }
+
+ /* Remove it and free it */
+ RemoveEntryList(&UniqueIdReplicate->ReplicatedUniqueIdsListEntry);
+ FreePool(UniqueIdReplicate->UniqueId);
+ FreePool(UniqueIdReplicate);
+ }
+
+ /* We're done with the remote database */
+ FreePool(DatabaseEntry);
+ CloseRemoteDatabase(RemoteDatabase);
+
+ /* Check write operation succeed */
+ if (!NT_SUCCESS(Status))
+ {
+ FreePool(SourceSymbolicName.Buffer);
+ return Status;
+ }
+
+ /* Try to find our associated device entry */
+ for (Entry = TargetDeviceInformation->AssociatedDevicesHead.Flink;
+ Entry != &TargetDeviceInformation->AssociatedDevicesHead;
+ Entry = Entry->Flink)
+ {
+ AssociatedEntry = CONTAINING_RECORD(Entry, ASSOCIATED_DEVICE_ENTRY, AssociatedDevicesEntry);
+
+ /* If found, delete it */
+ if (AssociatedEntry->DeviceInformation == DeviceInformation &&
+ RtlEqualUnicodeString(&AssociatedEntry->String, &SourceSymbolicName, TRUE))
+ {
+ RemoveEntryList(&AssociatedEntry->AssociatedDevicesEntry);
+ FreePool(AssociatedEntry->String.Buffer);
+ FreePool(AssociatedEntry);
+ break;
+ }
+ }
+
+ /* We're done! */
+ FreePool(SourceSymbolicName.Buffer);
+ return STATUS_SUCCESS;
}
/*
NTSTATUS Status, LockStatus;
PDEVICE_EXTENSION DeviceExtension;
- Stack = IoGetNextIrpStackLocation(Irp);
+ Stack = IoGetCurrentIrpStackLocation(Irp);
DeviceExtension = DeviceObject->DeviceExtension;
KeWaitForSingleObject(&(DeviceExtension->DeviceLock), Executive, KernelMode, FALSE, NULL);
projects / reactos.git / blobdiff