mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
871 lines
27 KiB
871 lines
27 KiB
/*++
|
|
|
|
Copyright (C) Microsoft Corporation, 1998 - 1999
|
|
|
|
Module Name:
|
|
|
|
wmilib.c
|
|
|
|
Abstract:
|
|
|
|
WMI library utility functions for SCSI miniports
|
|
|
|
CONSIDER adding the following functionality to the library:
|
|
* Dynamic instance names
|
|
* Different instance names for different guids
|
|
|
|
Author:
|
|
|
|
AlanWar
|
|
|
|
Environment:
|
|
|
|
kernel mode only
|
|
|
|
Notes:
|
|
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include "miniport.h"
|
|
#include "scsi.h"
|
|
#include "wmistr.h"
|
|
#include "scsiwmi.h"
|
|
|
|
typedef enum
|
|
{
|
|
ScsiProcessed, // Srb was processed and possibly completed
|
|
ScsiNotCompleted, // Srb was process and NOT completed
|
|
ScsiNotWmi, // Srb is not a WMI irp
|
|
ScsiForward // Srb is wmi irp, but targeted at another device object
|
|
} SYSCTL_SCSI_DISPOSITION, *PSYSCTL_SCSI_DISPOSITION;
|
|
|
|
|
|
BOOLEAN
|
|
ScsiWmipFindGuid(
|
|
IN PSCSIWMIGUIDREGINFO GuidList,
|
|
IN ULONG GuidCount,
|
|
IN LPGUID Guid,
|
|
OUT PULONG GuidIndex,
|
|
OUT PULONG InstanceCount
|
|
);
|
|
|
|
BOOLEAN
|
|
ScsiWmipFindGuid(
|
|
IN PSCSIWMIGUIDREGINFO GuidList,
|
|
IN ULONG GuidCount,
|
|
IN LPGUID Guid,
|
|
OUT PULONG GuidIndex,
|
|
OUT PULONG InstanceCount
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will search the list of guids registered and return
|
|
the index for the one that was registered.
|
|
|
|
Arguments:
|
|
|
|
GuidList is the list of guids to search
|
|
|
|
GuidCount is the count of guids in the list
|
|
|
|
Guid is the guid being searched for
|
|
|
|
*GuidIndex returns the index to the guid
|
|
|
|
*InstanceCount returns the count of instances for the guid
|
|
|
|
Return Value:
|
|
|
|
TRUE if guid is found else FALSE
|
|
|
|
--*/
|
|
{
|
|
ULONG i;
|
|
|
|
for (i = 0; i < GuidCount; i++)
|
|
{
|
|
if (IsEqualGUID(Guid, GuidList[i].Guid))
|
|
{
|
|
*GuidIndex = i;
|
|
*InstanceCount = GuidList[i].InstanceCount;
|
|
return(TRUE);
|
|
}
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
|
|
UCHAR ScsiWmipPostProcess(
|
|
IN UCHAR MinorFunction,
|
|
IN PUCHAR Buffer,
|
|
IN ULONG BufferSize,
|
|
IN ULONG BufferUsed,
|
|
IN UCHAR Status,
|
|
OUT PULONG ReturnSize
|
|
)
|
|
{
|
|
ULONG retSize;
|
|
ULONG bufferNeeded;
|
|
|
|
switch(MinorFunction)
|
|
{
|
|
case IRP_MN_QUERY_ALL_DATA:
|
|
{
|
|
PWNODE_ALL_DATA wnode;
|
|
PWNODE_TOO_SMALL wnodeTooSmall;
|
|
ULONG bufferNeeded;
|
|
ULONG instanceCount;
|
|
POFFSETINSTANCEDATAANDLENGTH offsetInstanceDataAndLength;
|
|
ULONG i;
|
|
PULONG instanceLengthArray;
|
|
ULONG dataBlockOffset;
|
|
|
|
wnode = (PWNODE_ALL_DATA)Buffer;
|
|
|
|
dataBlockOffset = wnode->DataBlockOffset;
|
|
instanceCount = wnode->InstanceCount;
|
|
bufferNeeded = dataBlockOffset + BufferUsed;
|
|
|
|
if ((Status == SRB_STATUS_SUCCESS) &&
|
|
(bufferNeeded > BufferSize))
|
|
{
|
|
Status = SRB_STATUS_DATA_OVERRUN;
|
|
}
|
|
|
|
if (Status != SRB_STATUS_SUCCESS)
|
|
{
|
|
if (Status == SRB_STATUS_DATA_OVERRUN)
|
|
{
|
|
wnodeTooSmall = (PWNODE_TOO_SMALL)wnode;
|
|
|
|
wnodeTooSmall->WnodeHeader.BufferSize = sizeof(WNODE_TOO_SMALL);
|
|
wnodeTooSmall->WnodeHeader.Flags = WNODE_FLAG_TOO_SMALL;
|
|
wnodeTooSmall->SizeNeeded = bufferNeeded;
|
|
|
|
retSize = sizeof(WNODE_TOO_SMALL);
|
|
Status = SRB_STATUS_SUCCESS;
|
|
} else {
|
|
retSize = 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
instanceLengthArray = (PULONG)&wnode->OffsetInstanceDataAndLength[0];
|
|
offsetInstanceDataAndLength = (POFFSETINSTANCEDATAANDLENGTH)instanceLengthArray;
|
|
|
|
wnode->WnodeHeader.BufferSize = bufferNeeded;
|
|
retSize = bufferNeeded;
|
|
|
|
for (i = instanceCount; i != 0; i--)
|
|
{
|
|
offsetInstanceDataAndLength[i-1].LengthInstanceData = instanceLengthArray[i-1];
|
|
}
|
|
|
|
for (i = 0; i < instanceCount; i++)
|
|
{
|
|
offsetInstanceDataAndLength[i].OffsetInstanceData = dataBlockOffset;
|
|
dataBlockOffset = (dataBlockOffset + offsetInstanceDataAndLength[i].LengthInstanceData + 7) & ~7;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_QUERY_SINGLE_INSTANCE:
|
|
{
|
|
PWNODE_SINGLE_INSTANCE wnode;
|
|
PWNODE_TOO_SMALL wnodeTooSmall;
|
|
ULONG bufferNeeded;
|
|
|
|
wnode = (PWNODE_SINGLE_INSTANCE)Buffer;
|
|
|
|
bufferNeeded = wnode->DataBlockOffset + BufferUsed;
|
|
|
|
if (Status == SRB_STATUS_SUCCESS)
|
|
{
|
|
retSize = bufferNeeded;
|
|
wnode->WnodeHeader.BufferSize = bufferNeeded;
|
|
|
|
ASSERT(wnode->SizeDataBlock == BufferUsed);
|
|
|
|
} else if (Status == SRB_STATUS_DATA_OVERRUN) {
|
|
wnodeTooSmall = (PWNODE_TOO_SMALL)wnode;
|
|
|
|
wnodeTooSmall->WnodeHeader.BufferSize = sizeof(WNODE_TOO_SMALL);
|
|
wnodeTooSmall->WnodeHeader.Flags = WNODE_FLAG_TOO_SMALL;
|
|
wnodeTooSmall->SizeNeeded = bufferNeeded;
|
|
retSize = sizeof(WNODE_TOO_SMALL);
|
|
Status = SRB_STATUS_SUCCESS;
|
|
} else {
|
|
retSize = 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_EXECUTE_METHOD:
|
|
{
|
|
PWNODE_METHOD_ITEM wnode;
|
|
PWNODE_TOO_SMALL wnodeTooSmall;
|
|
ULONG bufferNeeded;
|
|
|
|
wnode = (PWNODE_METHOD_ITEM)Buffer;
|
|
|
|
bufferNeeded = wnode->DataBlockOffset + BufferUsed;
|
|
|
|
if (Status == SRB_STATUS_SUCCESS)
|
|
{
|
|
retSize = bufferNeeded;
|
|
wnode->WnodeHeader.BufferSize = bufferNeeded;
|
|
wnode->SizeDataBlock = BufferUsed;
|
|
|
|
} else if (Status == SRB_STATUS_DATA_OVERRUN) {
|
|
wnodeTooSmall = (PWNODE_TOO_SMALL)wnode;
|
|
|
|
wnodeTooSmall->WnodeHeader.BufferSize = sizeof(WNODE_TOO_SMALL);
|
|
wnodeTooSmall->WnodeHeader.Flags = WNODE_FLAG_TOO_SMALL;
|
|
wnodeTooSmall->SizeNeeded = bufferNeeded;
|
|
retSize = sizeof(WNODE_TOO_SMALL);
|
|
Status = SRB_STATUS_SUCCESS;
|
|
} else {
|
|
retSize = 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
{
|
|
//
|
|
// All other requests don't return any data
|
|
retSize = 0;
|
|
break;
|
|
}
|
|
}
|
|
*ReturnSize = retSize;
|
|
return(Status);
|
|
}
|
|
|
|
|
|
VOID
|
|
ScsiPortWmiPostProcess(
|
|
IN PSCSIWMI_REQUEST_CONTEXT RequestContext,
|
|
IN UCHAR Status,
|
|
IN ULONG BufferUsed
|
|
)
|
|
{
|
|
ASSERT(RequestContext != NULL);
|
|
RequestContext->ReturnStatus = ScsiWmipPostProcess(
|
|
RequestContext->MinorFunction,
|
|
RequestContext->Buffer,
|
|
RequestContext->BufferSize,
|
|
BufferUsed,
|
|
Status,
|
|
&RequestContext->ReturnSize);
|
|
}
|
|
|
|
|
|
UCHAR
|
|
ScsiWmipProcessRequest(
|
|
IN PSCSI_WMILIB_CONTEXT WmiLibInfo,
|
|
IN UCHAR MinorFunction,
|
|
IN PVOID Context,
|
|
IN PSCSIWMI_REQUEST_CONTEXT RequestContext,
|
|
IN PVOID DataPath,
|
|
IN ULONG BufferSize,
|
|
IN PUCHAR Buffer,
|
|
OUT PULONG ReturnSize,
|
|
OUT PSYSCTL_SCSI_DISPOSITION IrpDisposition
|
|
)
|
|
{
|
|
UCHAR status;
|
|
ULONG retSize;
|
|
ULONG guidIndex;
|
|
ULONG instanceCount;
|
|
ULONG instanceIndex;
|
|
|
|
ASSERT(MinorFunction <= IRP_MN_EXECUTE_METHOD);
|
|
|
|
*IrpDisposition = ScsiProcessed;
|
|
|
|
if (MinorFunction != IRP_MN_REGINFO)
|
|
{
|
|
//
|
|
// For all requests other than query registration info we are passed
|
|
// a guid. Determine if the guid is one that is supported by the
|
|
// device.
|
|
ASSERT(WmiLibInfo->GuidList != NULL);
|
|
if (ScsiWmipFindGuid(WmiLibInfo->GuidList,
|
|
WmiLibInfo->GuidCount,
|
|
(LPGUID)DataPath,
|
|
&guidIndex,
|
|
&instanceCount))
|
|
{
|
|
status = SRB_STATUS_SUCCESS;
|
|
} else {
|
|
status = SRB_STATUS_ERROR;
|
|
}
|
|
|
|
if ((status == SRB_STATUS_SUCCESS) &&
|
|
((MinorFunction == IRP_MN_QUERY_SINGLE_INSTANCE) ||
|
|
(MinorFunction == IRP_MN_CHANGE_SINGLE_INSTANCE) ||
|
|
(MinorFunction == IRP_MN_CHANGE_SINGLE_ITEM) ||
|
|
(MinorFunction == IRP_MN_EXECUTE_METHOD)))
|
|
{
|
|
instanceIndex = ((PWNODE_SINGLE_INSTANCE)Buffer)->InstanceIndex;
|
|
|
|
if ( (((PWNODE_HEADER)Buffer)->Flags) &
|
|
WNODE_FLAG_STATIC_INSTANCE_NAMES)
|
|
{
|
|
if ( instanceIndex >= instanceCount )
|
|
{
|
|
status = SRB_STATUS_ERROR;
|
|
}
|
|
} else {
|
|
status = SRB_STATUS_ERROR;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If we couldn't find the guid or the instance name index is out
|
|
// of range then return an error.
|
|
if (status != SRB_STATUS_SUCCESS)
|
|
{
|
|
*ReturnSize = 0;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
return(status);
|
|
}
|
|
}
|
|
|
|
switch(MinorFunction)
|
|
{
|
|
case IRP_MN_REGINFO:
|
|
{
|
|
ULONG guidCount;
|
|
PSCSIWMIGUIDREGINFO guidList;
|
|
PWMIREGINFOW wmiRegInfo;
|
|
PWMIREGGUIDW wmiRegGuid;
|
|
PWCHAR mofResourceName;
|
|
PWCHAR stringPtr;
|
|
ULONG mofResourceOffset;
|
|
USHORT mofResourceSize;
|
|
ULONG bufferNeeded;
|
|
ULONG i;
|
|
USHORT nameSize;
|
|
ULONG nameOffset, nameFlags;
|
|
USHORT mofResourceNameLen;
|
|
|
|
//
|
|
// Make sure that the required parts of the WMILIB_INFO structure
|
|
// are filled in.
|
|
ASSERT(WmiLibInfo->QueryWmiRegInfo != NULL);
|
|
ASSERT(WmiLibInfo->QueryWmiDataBlock != NULL);
|
|
|
|
status = WmiLibInfo->QueryWmiRegInfo(
|
|
Context,
|
|
RequestContext,
|
|
&mofResourceName);
|
|
|
|
if (status == SRB_STATUS_SUCCESS)
|
|
{
|
|
ASSERT(WmiLibInfo->GuidList != NULL);
|
|
|
|
guidList = WmiLibInfo->GuidList;
|
|
guidCount = WmiLibInfo->GuidCount;
|
|
|
|
nameOffset = sizeof(WMIREGINFO) +
|
|
guidCount * sizeof(WMIREGGUIDW);
|
|
|
|
nameFlags = WMIREG_FLAG_INSTANCE_BASENAME;
|
|
nameSize = sizeof(L"ScsiMiniPort");
|
|
|
|
mofResourceOffset = nameOffset + nameSize + sizeof(USHORT);
|
|
if (mofResourceName == NULL)
|
|
{
|
|
mofResourceSize = 0;
|
|
} else {
|
|
mofResourceNameLen = 0;
|
|
while (mofResourceName[mofResourceNameLen] != 0)
|
|
{
|
|
mofResourceNameLen++;
|
|
}
|
|
mofResourceSize = mofResourceNameLen * sizeof(WCHAR);
|
|
}
|
|
|
|
bufferNeeded = mofResourceOffset + mofResourceSize + sizeof(USHORT);
|
|
|
|
if (bufferNeeded <= BufferSize)
|
|
{
|
|
retSize = bufferNeeded;
|
|
|
|
wmiRegInfo = (PWMIREGINFO)Buffer;
|
|
wmiRegInfo->BufferSize = bufferNeeded;
|
|
wmiRegInfo->NextWmiRegInfo = 0;
|
|
wmiRegInfo->MofResourceName = mofResourceOffset;
|
|
wmiRegInfo->RegistryPath = 0;
|
|
wmiRegInfo->GuidCount = guidCount;
|
|
|
|
for (i = 0; i < guidCount; i++)
|
|
{
|
|
wmiRegGuid = &wmiRegInfo->WmiRegGuid[i];
|
|
wmiRegGuid->Guid = *guidList[i].Guid;
|
|
wmiRegGuid->Flags = guidList[i].Flags | nameFlags;
|
|
wmiRegGuid->InstanceInfo = nameOffset;
|
|
wmiRegGuid->InstanceCount = guidList[i].InstanceCount;
|
|
}
|
|
|
|
stringPtr = (PWCHAR)((PUCHAR)Buffer + nameOffset);
|
|
*stringPtr++ = nameSize;
|
|
ScsiPortMoveMemory(stringPtr,
|
|
L"ScsiMiniPort",
|
|
nameSize);
|
|
|
|
stringPtr = (PWCHAR)((PUCHAR)Buffer + mofResourceOffset);
|
|
*stringPtr++ = mofResourceSize;
|
|
ScsiPortMoveMemory(stringPtr,
|
|
mofResourceName,
|
|
mofResourceSize);
|
|
|
|
} else {
|
|
*((PULONG)Buffer) = bufferNeeded;
|
|
retSize = sizeof(ULONG);
|
|
}
|
|
} else {
|
|
// QueryWmiRegInfo failed
|
|
retSize = 0;
|
|
}
|
|
|
|
*ReturnSize = retSize;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
return(status);
|
|
}
|
|
|
|
case IRP_MN_QUERY_ALL_DATA:
|
|
{
|
|
PWNODE_ALL_DATA wnode;
|
|
ULONG bufferAvail;
|
|
PULONG instanceLengthArray;
|
|
PUCHAR dataBuffer;
|
|
ULONG instanceLengthArraySize;
|
|
ULONG dataBlockOffset;
|
|
|
|
wnode = (PWNODE_ALL_DATA)Buffer;
|
|
|
|
if (BufferSize < sizeof(WNODE_ALL_DATA))
|
|
{
|
|
//
|
|
// The buffer should never be smaller than the size of
|
|
// WNODE_ALL_DATA, however if it is then return with an
|
|
// error requesting the minimum sized buffer.
|
|
ASSERT(FALSE);
|
|
|
|
status = SRB_STATUS_ERROR;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
|
|
break;
|
|
}
|
|
|
|
wnode->InstanceCount = instanceCount;
|
|
|
|
wnode->WnodeHeader.Flags &= ~WNODE_FLAG_FIXED_INSTANCE_SIZE;
|
|
|
|
instanceLengthArraySize = instanceCount * sizeof(OFFSETINSTANCEDATAANDLENGTH);
|
|
|
|
dataBlockOffset = (FIELD_OFFSET(WNODE_ALL_DATA, OffsetInstanceDataAndLength) + instanceLengthArraySize + 7) & ~7;
|
|
|
|
wnode->DataBlockOffset = dataBlockOffset;
|
|
if (dataBlockOffset <= BufferSize)
|
|
{
|
|
instanceLengthArray = (PULONG)&wnode->OffsetInstanceDataAndLength[0];
|
|
dataBuffer = Buffer + dataBlockOffset;
|
|
bufferAvail = BufferSize - dataBlockOffset;
|
|
} else {
|
|
//
|
|
// There is not enough room in the WNODE to complete
|
|
// the query
|
|
instanceLengthArray = NULL;
|
|
dataBuffer = NULL;
|
|
bufferAvail = 0;
|
|
}
|
|
|
|
status = WmiLibInfo->QueryWmiDataBlock(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
0,
|
|
instanceCount,
|
|
instanceLengthArray,
|
|
bufferAvail,
|
|
dataBuffer);
|
|
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_QUERY_SINGLE_INSTANCE:
|
|
{
|
|
PWNODE_SINGLE_INSTANCE wnode;
|
|
ULONG dataBlockOffset;
|
|
|
|
wnode = (PWNODE_SINGLE_INSTANCE)Buffer;
|
|
|
|
dataBlockOffset = wnode->DataBlockOffset;
|
|
|
|
status = WmiLibInfo->QueryWmiDataBlock(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
instanceIndex,
|
|
1,
|
|
&wnode->SizeDataBlock,
|
|
BufferSize - dataBlockOffset,
|
|
(PUCHAR)wnode + dataBlockOffset);
|
|
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_CHANGE_SINGLE_INSTANCE:
|
|
{
|
|
PWNODE_SINGLE_INSTANCE wnode;
|
|
|
|
if (WmiLibInfo->SetWmiDataBlock != NULL)
|
|
{
|
|
wnode = (PWNODE_SINGLE_INSTANCE)Buffer;
|
|
|
|
status = WmiLibInfo->SetWmiDataBlock(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
instanceIndex,
|
|
wnode->SizeDataBlock,
|
|
(PUCHAR)wnode + wnode->DataBlockOffset);
|
|
|
|
} else {
|
|
//
|
|
// If set callback is not filled in then it must be readonly
|
|
status = SRB_STATUS_ERROR;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_CHANGE_SINGLE_ITEM:
|
|
{
|
|
PWNODE_SINGLE_ITEM wnode;
|
|
|
|
if (WmiLibInfo->SetWmiDataItem != NULL)
|
|
{
|
|
wnode = (PWNODE_SINGLE_ITEM)Buffer;
|
|
|
|
status = WmiLibInfo->SetWmiDataItem(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
instanceIndex,
|
|
wnode->ItemId,
|
|
wnode->SizeDataItem,
|
|
(PUCHAR)wnode + wnode->DataBlockOffset);
|
|
|
|
} else {
|
|
//
|
|
// If set callback is not filled in then it must be readonly
|
|
status = SRB_STATUS_ERROR;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_EXECUTE_METHOD:
|
|
{
|
|
PWNODE_METHOD_ITEM wnode;
|
|
|
|
if (WmiLibInfo->ExecuteWmiMethod != NULL)
|
|
{
|
|
wnode = (PWNODE_METHOD_ITEM)Buffer;
|
|
|
|
status = WmiLibInfo->ExecuteWmiMethod(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
instanceIndex,
|
|
wnode->MethodId,
|
|
wnode->SizeDataBlock,
|
|
BufferSize - wnode->DataBlockOffset,
|
|
Buffer + wnode->DataBlockOffset);
|
|
} else {
|
|
//
|
|
// If method callback is not filled in then it must be error
|
|
status = SRB_STATUS_ERROR;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_ENABLE_EVENTS:
|
|
{
|
|
if (WmiLibInfo->WmiFunctionControl != NULL)
|
|
{
|
|
status = WmiLibInfo->WmiFunctionControl(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
ScsiWmiEventControl,
|
|
TRUE);
|
|
} else {
|
|
//
|
|
// If callback is not filled in then just succeed
|
|
status = SRB_STATUS_SUCCESS;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_DISABLE_EVENTS:
|
|
{
|
|
if (WmiLibInfo->WmiFunctionControl != NULL)
|
|
{
|
|
status = WmiLibInfo->WmiFunctionControl(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
ScsiWmiEventControl,
|
|
FALSE);
|
|
} else {
|
|
//
|
|
// If callback is not filled in then just succeed
|
|
status = SRB_STATUS_SUCCESS;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_ENABLE_COLLECTION:
|
|
{
|
|
if (WmiLibInfo->WmiFunctionControl != NULL)
|
|
{
|
|
status = WmiLibInfo->WmiFunctionControl(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
ScsiWmiDataBlockControl,
|
|
TRUE);
|
|
} else {
|
|
//
|
|
// If callback is not filled in then just succeed
|
|
status = SRB_STATUS_SUCCESS;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case IRP_MN_DISABLE_COLLECTION:
|
|
{
|
|
if (WmiLibInfo->WmiFunctionControl != NULL)
|
|
{
|
|
status = WmiLibInfo->WmiFunctionControl(
|
|
Context,
|
|
RequestContext,
|
|
guidIndex,
|
|
ScsiWmiDataBlockControl,
|
|
FALSE);
|
|
} else {
|
|
//
|
|
// If callback is not filled in then just succeed
|
|
status = SRB_STATUS_SUCCESS;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
{
|
|
ASSERT(FALSE);
|
|
status = SRB_STATUS_ERROR;
|
|
*IrpDisposition = ScsiNotCompleted;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
return(status);
|
|
}
|
|
|
|
BOOLEAN
|
|
ScsiPortWmiDispatchFunction(
|
|
IN PSCSI_WMILIB_CONTEXT WmiLibInfo,
|
|
IN UCHAR MinorFunction,
|
|
IN PVOID Context,
|
|
IN PSCSIWMI_REQUEST_CONTEXT RequestContext,
|
|
IN PVOID DataPath,
|
|
IN ULONG BufferSize,
|
|
IN PVOID Buffer
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Dispatch helper routine for WMI srb requests. Based on the Minor
|
|
function passed the WMI request is processed and this routine
|
|
invokes the appropriate callback in the WMILIB structure.
|
|
|
|
Arguments:
|
|
|
|
WmiLibInfo has the SCSI WMILIB information control block associated
|
|
with the adapter or logical unit
|
|
|
|
DeviceContext is miniport defined context value passed on to the callbacks
|
|
invoked by this api.
|
|
|
|
RequestContext is a pointer to a context structure that maintains
|
|
information about this WMI srb. This request context must remain
|
|
valid throughout the entire processing of the srb, at least until
|
|
ScsiPortWmiPostProcess returns with the final srb return status and
|
|
buffer size. If the srb can pend then memory for this buffer should
|
|
be allocated from the SRB extension. If not then the memory can be
|
|
allocated from a stack frame that does not go out of scope, perhaps
|
|
that of the caller to this api.
|
|
|
|
DataPath is value passed in wmi request
|
|
|
|
BufferSize is value passed in wmi request
|
|
|
|
Buffer is value passed in wmi request
|
|
|
|
Return Value:
|
|
|
|
TRUE if request is pending else FALSE
|
|
|
|
--*/
|
|
{
|
|
UCHAR status;
|
|
SYSCTL_SCSI_DISPOSITION irpDisposition;
|
|
ULONG retSize;
|
|
|
|
ASSERT(RequestContext != NULL);
|
|
|
|
//
|
|
// First ensure that the irp is a WMI irp
|
|
if (MinorFunction > IRP_MN_EXECUTE_METHOD)
|
|
{
|
|
//
|
|
// This is not a WMI irp, setup error return
|
|
status = SRB_STATUS_ERROR;
|
|
RequestContext->ReturnSize = 0;
|
|
RequestContext->ReturnStatus = status;
|
|
} else {
|
|
//
|
|
// Let SCSIWMI library have a crack at the SRB
|
|
RequestContext->MinorFunction = MinorFunction;
|
|
RequestContext->Buffer = Buffer;
|
|
RequestContext->BufferSize = BufferSize;
|
|
RequestContext->ReturnSize = 0;
|
|
|
|
status = ScsiWmipProcessRequest(WmiLibInfo,
|
|
MinorFunction,
|
|
Context,
|
|
RequestContext,
|
|
DataPath,
|
|
BufferSize,
|
|
Buffer,
|
|
&retSize,
|
|
&irpDisposition);
|
|
|
|
|
|
if (irpDisposition == ScsiNotCompleted)
|
|
{
|
|
//
|
|
// Some error occured while processing the SRB, for example
|
|
// guid not found. Setup the returned error
|
|
RequestContext->ReturnStatus = status;
|
|
if (status != SRB_STATUS_SUCCESS)
|
|
{
|
|
retSize = 0;
|
|
}
|
|
RequestContext->ReturnSize = retSize;
|
|
}
|
|
}
|
|
return(status == SRB_STATUS_PENDING);
|
|
}
|
|
|
|
VOID
|
|
ScsiPortWmiFireLogicalUnitEvent(
|
|
IN PVOID HwDeviceExtension,
|
|
IN UCHAR PathId,
|
|
IN UCHAR TargetId,
|
|
IN UCHAR Lun,
|
|
IN LPGUID Guid,
|
|
IN ULONG InstanceIndex,
|
|
IN ULONG EventDataSize,
|
|
IN PVOID EventData
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine will fire a WMI event using the data buffer passed. This
|
|
routine may be called at or below DPC level
|
|
|
|
Arguments:
|
|
|
|
HwDeviceExtension is the adapter device extension
|
|
|
|
PathId identifies the SCSI bus if a logical unit is firing the event
|
|
or is 0xff if the adapter is firing the event.
|
|
|
|
TargetId identifies the target controller or device on the bus
|
|
|
|
Lun identifies the logical unit number of the target device
|
|
|
|
Guid is pointer to the GUID that represents the event
|
|
|
|
InstanceIndex is the index of the instance of the event
|
|
|
|
EventDataSize is the number of bytes of data that is being fired with
|
|
with the event. This size specifies the size of the event data only
|
|
and does NOT include the 0x40 bytes of preceeding padding.
|
|
|
|
EventData is the data that is fired with the events. There must be exactly
|
|
0x40 bytes of padding preceeding the event data.
|
|
|
|
Return Value:
|
|
|
|
--*/
|
|
{
|
|
PWNODE_SINGLE_INSTANCE event;
|
|
UCHAR status;
|
|
|
|
ASSERT(EventData != NULL);
|
|
|
|
event = (PWNODE_SINGLE_INSTANCE)EventData;
|
|
|
|
event->WnodeHeader.Guid = *Guid;
|
|
event->WnodeHeader.Flags = WNODE_FLAG_SINGLE_INSTANCE |
|
|
WNODE_FLAG_EVENT_ITEM |
|
|
WNODE_FLAG_STATIC_INSTANCE_NAMES;
|
|
event->WnodeHeader.Linkage = 0;
|
|
|
|
event->InstanceIndex = InstanceIndex;
|
|
event->SizeDataBlock = EventDataSize;
|
|
event->DataBlockOffset = 0x40;
|
|
event->WnodeHeader.BufferSize = event->DataBlockOffset +
|
|
event->SizeDataBlock;
|
|
|
|
if (PathId != 0xff)
|
|
{
|
|
ScsiPortNotification(WMIEvent,
|
|
HwDeviceExtension,
|
|
event,
|
|
PathId,
|
|
TargetId,
|
|
Lun);
|
|
} else {
|
|
ScsiPortNotification(WMIEvent,
|
|
HwDeviceExtension,
|
|
event,
|
|
PathId);
|
|
}
|
|
}
|