mirror of
https://github.com/reactos/reactos.git
synced 2024-09-19 09:09:53 +00:00
8f6a632579
svn path=/branches/audio-bringup/; revision=49491
387 lines
12 KiB
C
387 lines
12 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS Kernel Streaming
|
|
* FILE: drivers/ksfilter/ks/event.c
|
|
* PURPOSE: KS property handling functions
|
|
* PROGRAMMER: Johannes Anderwald
|
|
*/
|
|
|
|
#include "priv.h"
|
|
|
|
const GUID KSPROPTYPESETID_General = {0x97E99BA0L, 0xBDEA, 0x11CF, {0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00}};
|
|
|
|
NTSTATUS
|
|
FindPropertyHandler(
|
|
IN PIO_STATUS_BLOCK IoStatus,
|
|
IN const KSPROPERTY_SET* PropertySet,
|
|
IN ULONG PropertySetCount,
|
|
IN PKSPROPERTY Property,
|
|
IN ULONG InputBufferLength,
|
|
IN ULONG OutputBufferLength,
|
|
OUT PVOID OutputBuffer,
|
|
OUT PFNKSHANDLER *PropertyHandler,
|
|
OUT PKSPROPERTY_SET * Set)
|
|
{
|
|
ULONG Index, ItemIndex;
|
|
|
|
for(Index = 0; Index < PropertySetCount; Index++)
|
|
{
|
|
ASSERT(PropertySet[Index].Set);
|
|
|
|
if (IsEqualGUIDAligned(&Property->Set, PropertySet[Index].Set))
|
|
{
|
|
for(ItemIndex = 0; ItemIndex < PropertySet[Index].PropertiesCount; ItemIndex++)
|
|
{
|
|
if (PropertySet[Index].PropertyItem[ItemIndex].PropertyId == Property->Id)
|
|
{
|
|
if (PropertySet[Index].PropertyItem[ItemIndex].MinProperty > InputBufferLength)
|
|
{
|
|
/* too small input buffer */
|
|
IoStatus->Information = PropertySet[Index].PropertyItem[ItemIndex].MinProperty;
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (PropertySet[Index].PropertyItem[ItemIndex].MinData > OutputBufferLength)
|
|
{
|
|
/* too small output buffer */
|
|
IoStatus->Information = PropertySet[Index].PropertyItem[ItemIndex].MinData;
|
|
return STATUS_MORE_ENTRIES;
|
|
}
|
|
|
|
/* store property set */
|
|
*Set = (PKSPROPERTY_SET)&PropertySet[Index];
|
|
|
|
if (Property->Flags & KSPROPERTY_TYPE_SET)
|
|
{
|
|
/* store property handler */
|
|
*PropertyHandler = PropertySet[Index].PropertyItem[ItemIndex].SetPropertyHandler;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if (Property->Flags & KSPROPERTY_TYPE_GET)
|
|
{
|
|
/* store property handler */
|
|
*PropertyHandler = PropertySet[Index].PropertyItem[ItemIndex].GetPropertyHandler;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
if (Property->Flags & KSPROPERTY_TYPE_BASICSUPPORT)
|
|
{
|
|
PULONG Flags;
|
|
PKSPROPERTY_DESCRIPTION Description;
|
|
|
|
if (sizeof(ULONG) > OutputBufferLength)
|
|
{
|
|
/* too small buffer */
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* get output buffer */
|
|
Flags = (PULONG)OutputBuffer;
|
|
|
|
/* clear flags */
|
|
*Flags = 0;
|
|
|
|
IoStatus->Information = sizeof(ULONG);
|
|
|
|
if (PropertySet[Index].PropertyItem[ItemIndex].SupportHandler)
|
|
{
|
|
/* use support handler from driver */
|
|
*PropertyHandler = PropertySet[Index].PropertyItem[ItemIndex].SupportHandler;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if (PropertySet[Index].PropertyItem[ItemIndex].GetSupported)
|
|
*Flags |= KSPROPERTY_TYPE_GET;
|
|
|
|
if (PropertySet[Index].PropertyItem[ItemIndex].SetSupported)
|
|
*Flags |= KSPROPERTY_TYPE_SET;
|
|
|
|
if (OutputBufferLength >= sizeof(KSPROPERTY_DESCRIPTION))
|
|
{
|
|
/* get output buffer */
|
|
Description = (PKSPROPERTY_DESCRIPTION)OutputBuffer;
|
|
|
|
/* store result */
|
|
Description->DescriptionSize = sizeof(KSPROPERTY_DESCRIPTION);
|
|
Description->PropTypeSet.Set = KSPROPTYPESETID_General;
|
|
Description->PropTypeSet.Id = 0;
|
|
Description->PropTypeSet.Flags = 0;
|
|
Description->MembersListCount = 0;
|
|
Description->Reserved = 0;
|
|
|
|
IoStatus->Information = sizeof(KSPROPERTY_DESCRIPTION);
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return STATUS_NOT_FOUND;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
KspPropertyHandler(
|
|
IN PIRP Irp,
|
|
IN ULONG PropertySetsCount,
|
|
IN const KSPROPERTY_SET* PropertySet,
|
|
IN PFNKSALLOCATOR Allocator OPTIONAL,
|
|
IN ULONG PropertyItemSize OPTIONAL)
|
|
{
|
|
PKSPROPERTY Property;
|
|
PKSPROPERTY_SET Set;
|
|
PIO_STACK_LOCATION IoStack;
|
|
NTSTATUS Status;
|
|
PFNKSHANDLER PropertyHandler = NULL;
|
|
ULONG Index;
|
|
LPGUID Guid;
|
|
|
|
/* get current irp stack */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
/* check if inputbuffer at least holds KSPROPERTY item */
|
|
if (IoStack->Parameters.DeviceIoControl.InputBufferLength < sizeof(KSPROPERTY))
|
|
{
|
|
/* invalid parameter */
|
|
Irp->IoStatus.Information = sizeof(KSPROPERTY);
|
|
return STATUS_INVALID_BUFFER_SIZE;
|
|
}
|
|
|
|
/* FIXME probe the input / output buffer if from user mode */
|
|
|
|
/* get input property request */
|
|
Property = (PKSPROPERTY)IoStack->Parameters.DeviceIoControl.Type3InputBuffer;
|
|
|
|
// DPRINT("KspPropertyHandler Irp %p PropertySetsCount %u PropertySet %p Allocator %p PropertyItemSize %u ExpectedPropertyItemSize %u\n", Irp, PropertySetsCount, PropertySet, Allocator, PropertyItemSize, sizeof(KSPROPERTY_ITEM));
|
|
|
|
/* sanity check */
|
|
ASSERT(PropertyItemSize == 0 || PropertyItemSize == sizeof(KSPROPERTY_ITEM));
|
|
|
|
/* find the property handler */
|
|
Status = FindPropertyHandler(&Irp->IoStatus, PropertySet, PropertySetsCount, Property, IoStack->Parameters.DeviceIoControl.InputBufferLength, IoStack->Parameters.DeviceIoControl.OutputBufferLength, Irp->UserBuffer, &PropertyHandler, &Set);
|
|
|
|
if (NT_SUCCESS(Status) && PropertyHandler)
|
|
{
|
|
/* call property handler */
|
|
KSPROPERTY_SET_IRP_STORAGE(Irp) = Set;
|
|
Status = PropertyHandler(Irp, Property, Irp->UserBuffer);
|
|
|
|
if (Status == STATUS_BUFFER_TOO_SMALL)
|
|
{
|
|
/* output buffer is too small */
|
|
if (Allocator)
|
|
{
|
|
/* allocate the requested amount */
|
|
Status = Allocator(Irp, Irp->IoStatus.Information, FALSE);
|
|
|
|
/* check if the block was allocated */
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* no memory */
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
/* re-call property handler */
|
|
Status = PropertyHandler(Irp, Property, Irp->UserBuffer);
|
|
}
|
|
}
|
|
}
|
|
else if (IsEqualGUIDAligned(&Property->Set, &GUID_NULL) && Property->Id == 0 && (Property->Flags & KSPROPERTY_TYPE_SETSUPPORT) == KSPROPERTY_TYPE_SETSUPPORT)
|
|
{
|
|
// store output size
|
|
Irp->IoStatus.Information = sizeof(GUID) * PropertySetsCount;
|
|
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(GUID) * PropertySetsCount)
|
|
{
|
|
// buffer too small
|
|
return STATUS_MORE_ENTRIES;
|
|
}
|
|
|
|
// get output buffer
|
|
Guid = (LPGUID)Irp->UserBuffer;
|
|
|
|
// copy property guids from property sets
|
|
for(Index = 0; Index < PropertySetsCount; Index++)
|
|
{
|
|
RtlMoveMemory(&Guid[Index], PropertySet[Index].Set, sizeof(GUID));
|
|
}
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
|
|
/* done */
|
|
return Status;
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
NTSTATUS
|
|
NTAPI
|
|
KsPropertyHandler(
|
|
IN PIRP Irp,
|
|
IN ULONG PropertySetsCount,
|
|
IN const KSPROPERTY_SET* PropertySet)
|
|
{
|
|
return KspPropertyHandler(Irp, PropertySetsCount, PropertySet, NULL, 0);
|
|
}
|
|
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
NTSTATUS
|
|
NTAPI
|
|
KsPropertyHandlerWithAllocator(
|
|
IN PIRP Irp,
|
|
IN ULONG PropertySetsCount,
|
|
IN PKSPROPERTY_SET PropertySet,
|
|
IN PFNKSALLOCATOR Allocator OPTIONAL,
|
|
IN ULONG PropertyItemSize OPTIONAL)
|
|
{
|
|
return KspPropertyHandler(Irp, PropertySetsCount, PropertySet, Allocator, PropertyItemSize);
|
|
}
|
|
|
|
NTSTATUS
|
|
FindFastPropertyHandler(
|
|
IN ULONG FastIoCount,
|
|
IN const KSFASTPROPERTY_ITEM * FastIoTable,
|
|
IN PKSPROPERTY PropertyId,
|
|
OUT PFNKSFASTHANDLER * FastPropertyHandler)
|
|
{
|
|
ULONG Index;
|
|
|
|
/* iterate through all items */
|
|
for(Index = 0; Index < FastIoCount; Index++)
|
|
{
|
|
if (PropertyId->Id == FastIoTable[Index].PropertyId)
|
|
{
|
|
if (PropertyId->Flags & KSPROPERTY_TYPE_SET)
|
|
{
|
|
if (FastIoTable[Index].SetSupported)
|
|
{
|
|
*FastPropertyHandler = FastIoTable[Index].SetPropertyHandler;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
}
|
|
|
|
if (PropertyId->Flags & KSPROPERTY_TYPE_GET)
|
|
{
|
|
if (FastIoTable[Index].GetSupported)
|
|
{
|
|
*FastPropertyHandler = FastIoTable[Index].GetPropertyHandler;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
/* no fast property handler found */
|
|
return STATUS_NOT_FOUND;
|
|
}
|
|
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
BOOLEAN
|
|
NTAPI
|
|
KsFastPropertyHandler(
|
|
IN PFILE_OBJECT FileObject,
|
|
IN PKSPROPERTY UNALIGNED Property,
|
|
IN ULONG PropertyLength,
|
|
IN OUT PVOID UNALIGNED Data,
|
|
IN ULONG DataLength,
|
|
OUT PIO_STATUS_BLOCK IoStatus,
|
|
IN ULONG PropertySetsCount,
|
|
IN const KSPROPERTY_SET* PropertySet)
|
|
{
|
|
KSPROPERTY PropRequest;
|
|
KPROCESSOR_MODE Mode;
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
ULONG Index;
|
|
PFNKSFASTHANDLER FastPropertyHandler;
|
|
|
|
if (PropertyLength < sizeof(KSPROPERTY))
|
|
{
|
|
/* invalid request */
|
|
return FALSE;
|
|
}
|
|
|
|
/* get previous mode */
|
|
Mode = ExGetPreviousMode();
|
|
|
|
if (Mode == KernelMode)
|
|
{
|
|
/* just copy it */
|
|
RtlMoveMemory(&PropRequest, Property, sizeof(KSPROPERTY));
|
|
}
|
|
else
|
|
{
|
|
/* need to probe the buffer */
|
|
_SEH2_TRY
|
|
{
|
|
ProbeForRead(Property, sizeof(KSPROPERTY), sizeof(UCHAR));
|
|
RtlMoveMemory(&PropRequest, Property, sizeof(KSPROPERTY));
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
/* Exception, get the error code */
|
|
Status = _SEH2_GetExceptionCode();
|
|
}_SEH2_END;
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
return FALSE;
|
|
}
|
|
|
|
/* are there any property sets provided */
|
|
if (PropertySetsCount)
|
|
{
|
|
/* iterate through all property sets count */
|
|
Index = 0;
|
|
do
|
|
{
|
|
/* does the property id match */
|
|
if (IsEqualGUIDAligned(PropertySet[Index].Set, &PropRequest.Set))
|
|
{
|
|
/* try to find a fast property handler */
|
|
Status = FindFastPropertyHandler(PropertySet[Index].FastIoCount, PropertySet[Index].FastIoTable, &PropRequest, &FastPropertyHandler);
|
|
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* call fast property handler */
|
|
ASSERT(PropertyLength == sizeof(KSPROPERTY)); /* FIXME check if property length is bigger -> copy params */
|
|
ASSERT(Mode == KernelMode); /* FIXME need to probe usermode output buffer */
|
|
return FastPropertyHandler(FileObject, &PropRequest, sizeof(KSPROPERTY), Data, DataLength, IoStatus);
|
|
}
|
|
}
|
|
/* move to next item */
|
|
Index++;
|
|
}while(Index < PropertySetsCount);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
NTSTATUS
|
|
NTAPI
|
|
KsDispatchSpecificProperty(
|
|
IN PIRP Irp,
|
|
IN PFNKSHANDLER Handler)
|
|
{
|
|
PIO_STACK_LOCATION IoStack;
|
|
|
|
/* get current irp stack location */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
return Handler(Irp, IoStack->Parameters.DeviceIoControl.Type3InputBuffer, Irp->UserBuffer);
|
|
}
|
|
|