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[RAMDISK]

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Implement RamdiskQueryId() which is used in case of IRP_MJ_PNP + IRP_MN_QUERY_ID

svn path=/trunk/; revision=65895
This commit is contained in:
Pierre Schweitzer 2014-12-29 18:00:50 +00:00
parent 4037b3b7c0
commit ff098a27eb
1 changed files with 126 additions and 1 deletions
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127
reactos/drivers/storage/class/ramdisk/ramdisk.c
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@ -2022,6 +2022,131 @@ RamdiskRemoveBusDevice(IN PDEVICE_OBJECT DeviceObject,
return Status; return Status;
} }
NTSTATUS
NTAPI
RamdiskQueryId(IN PRAMDISK_DRIVE_EXTENSION DriveExtension,
IN PIRP Irp)
{
NTSTATUS Status;
PIO_STACK_LOCATION IoStackLocation;
PWSTR OutputString = NULL;
ULONG StringLength;
Status = STATUS_SUCCESS;
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
//
// Get what is being queried
//
switch (IoStackLocation->Parameters.QueryId.IdType)
{
case BusQueryDeviceID:
//
// Allocate a buffer long enough to receive Ramdisk\RamDisk in any case
// In case we don't have RAMDISK_REGISTRY_DISK, we then need two more
// chars to store Ramdisk\RamVolume instead
//
StringLength = 4 * (DriveExtension->DiskType != RAMDISK_REGISTRY_DISK) + sizeof(L"Ramdisk\\RamDisk");
OutputString = ExAllocatePoolWithTag(PagedPool, StringLength, 'dmaR');
if (OutputString == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
wcsncpy(OutputString, L"Ramdisk\\", StringLength / sizeof(WCHAR));
if (DriveExtension->DiskType != RAMDISK_REGISTRY_DISK)
{
wcsncat(OutputString, L"RamVolume", StringLength / sizeof(WCHAR));
}
else
{
wcsncat(OutputString, L"RamDisk", StringLength / sizeof(WCHAR));
}
break;
case BusQueryHardwareIDs:
//
// Allocate a buffer long enough to receive Ramdisk\RamDisk in any case
// In case we don't have RAMDISK_REGISTRY_DISK, we then need two more
// chars to store Ramdisk\RamVolume instead
// We also need an extra char, because it is required that the string
// is null-terminated twice
//
StringLength = 4 * (DriveExtension->DiskType != RAMDISK_REGISTRY_DISK) +
sizeof(UNICODE_NULL) + sizeof(L"Ramdisk\\RamDisk");
OutputString = ExAllocatePoolWithTag(PagedPool, StringLength, 'dmaR');
if (OutputString == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
wcsncpy(OutputString, L"Ramdisk\\", StringLength / sizeof(WCHAR));
if (DriveExtension->DiskType != RAMDISK_REGISTRY_DISK)
{
wcsncat(OutputString, L"RamVolume", StringLength / sizeof(WCHAR));
}
else
{
wcsncat(OutputString, L"RamDisk", StringLength / sizeof(WCHAR));
}
OutputString[(StringLength / sizeof(WCHAR)) - 1] = UNICODE_NULL;
break;
case BusQueryCompatibleIDs:
if (DriveExtension->DiskType != RAMDISK_REGISTRY_DISK)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
StringLength = sizeof(L"GenDisk");
OutputString = ExAllocatePoolWithTag(PagedPool, StringLength, 'dmaR');
if (OutputString == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
wcsncpy(OutputString, L"GenDisk", StringLength / sizeof(WCHAR));
OutputString[(StringLength / sizeof(WCHAR)) - 1] = UNICODE_NULL;
break;
case BusQueryInstanceID:
OutputString = ExAllocatePoolWithTag(PagedPool, DriveExtension->GuidString.MaximumLength, 'dmaR');
if (OutputString == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
wcsncpy(OutputString, DriveExtension->GuidString.Buffer, DriveExtension->GuidString.MaximumLength / sizeof(WCHAR));
break;
case BusQueryDeviceSerialNumber:
//
// Nothing to do
//
break;
}
Irp->IoStatus.Status = Status;
Irp->IoStatus.Information = (ULONG_PTR)OutputString;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return Status;
}
NTSTATUS NTSTATUS
NTAPI NTAPI
RamdiskPnp(IN PDEVICE_OBJECT DeviceObject, RamdiskPnp(IN PDEVICE_OBJECT DeviceObject,
@ -2150,7 +2275,7 @@ RamdiskPnp(IN PDEVICE_OBJECT DeviceObject,
// //
if (DeviceExtension->Type == RamdiskDrive) if (DeviceExtension->Type == RamdiskDrive)
{ {
UNIMPLEMENTED_DBGBREAK("PnP IRP: %lx\n", Minor); Status = RamdiskQueryId((PRAMDISK_DRIVE_EXTENSION)DeviceExtension, Irp);
} }
break; break;