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windows-server-2003/base/fs/srv/smbopen.c

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/*++
Copyright (c) 1989 Microsoft Corporation
Module Name:
smbopen.c
Abstract:
This module contains routines for processing the following SMBs:
Open
Open and X
Create
Create New
Create Temporary
*** The SearchAttributes field in open/create SMBs is always
ignored. This duplicates the LM 2.0 server behavior.
Author:
David Treadwell (davidtr) 23-Nov-1989
Manny Weiser (mannyw) 15-Apr-1991 (oplock support)
Revision History:
16-Apr-1991 mannyw
--*/
#include "precomp.h"
#include "smbopen.tmh"
#pragma hdrstop
#define BugCheckFileId SRV_FILE_SMBOPEN
#define MAX_TEMP_OPEN_RETRIES 24
//
// in smbtrans.c
//
SMB_STATUS SRVFASTCALL
ExecuteTransaction (
IN OUT PWORK_CONTEXT WorkContext
);
//
// Local functions
//
VOID
SetEofToMatchAllocation (
IN HANDLE FileHandle,
IN ULONG AllocationSize
);
VOID SRVFASTCALL
RestartOpen (
PWORK_CONTEXT WorkContext
);
SMB_PROCESSOR_RETURN_TYPE
GenerateOpenResponse (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
);
VOID SRVFASTCALL
RestartOpenAndX (
PWORK_CONTEXT WorkContext
);
SMB_PROCESSOR_RETURN_TYPE
GenerateOpenAndXResponse (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
);
VOID SRVFASTCALL
RestartOpen2 (
PWORK_CONTEXT WorkContext
);
SMB_TRANS_STATUS
GenerateOpen2Response (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
);
VOID SRVFASTCALL
RestartNtCreateAndX (
PWORK_CONTEXT WorkContext
);
SMB_PROCESSOR_RETURN_TYPE
GenerateNtCreateAndXResponse (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
);
VOID SRVFASTCALL
RestartCreateWithSdOrEa (
PWORK_CONTEXT WorkContext
);
SMB_TRANS_STATUS
GenerateCreateWithSdOrEaResponse (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
);
VOID SRVFASTCALL
RestartSmbCreate(
IN PWORK_CONTEXT WorkContext
);
SMB_PROCESSOR_RETURN_TYPE
GenerateCreateResponse(
PWORK_CONTEXT WorkContext,
NTSTATUS CreateStatus
);
#ifdef ALLOC_PRAGMA
#pragma alloc_text( PAGE, SrvSmbOpen )
#pragma alloc_text( PAGE, RestartOpen )
#pragma alloc_text( PAGE, GenerateOpenResponse )
#pragma alloc_text( PAGE, SrvSmbOpenAndX )
#pragma alloc_text( PAGE, RestartOpenAndX )
#pragma alloc_text( PAGE, GenerateOpenAndXResponse )
#pragma alloc_text( PAGE, SrvSmbOpen2 )
#pragma alloc_text( PAGE, RestartOpen2 )
#pragma alloc_text( PAGE, GenerateOpen2Response )
#pragma alloc_text( PAGE, SrvSmbNtCreateAndX )
#pragma alloc_text( PAGE, RestartNtCreateAndX )
#pragma alloc_text( PAGE, GenerateNtCreateAndXResponse )
#pragma alloc_text( PAGE, SrvSmbCreateWithSdOrEa )
#pragma alloc_text( PAGE, RestartCreateWithSdOrEa )
#pragma alloc_text( PAGE, GenerateCreateWithSdOrEaResponse )
#pragma alloc_text( PAGE, SrvSmbCreate )
#pragma alloc_text( PAGE, SrvSmbCreateTemporary )
#pragma alloc_text( PAGE, SetEofToMatchAllocation )
#pragma alloc_text( PAGE, RestartSmbCreate )
#pragma alloc_text( PAGE, GenerateCreateResponse )
#endif
SMB_PROCESSOR_RETURN_TYPE
SrvSmbOpen (
SMB_PROCESSOR_PARAMETERS
)
/*++
Routine Description:
Processes an Open SMB. (This is the 'core' Open.)
Arguments:
SMB_PROCESSOR_PARAMETERS - See smbprocs.h for a description
of the parameters to SMB processor routines.
Return Value:
SMB_PROCESSOR_RETURN_TYPE - See smbprocs.h
--*/
{
PREQ_OPEN request;
NTSTATUS status = STATUS_SUCCESS;
USHORT access;
SMB_STATUS SmbStatus = SmbStatusInProgress;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_OPEN;
SrvWmiStartContext(WorkContext);
IF_SMB_DEBUG(OPEN_CLOSE1) {
KdPrint(( "Open file request header at 0x%p, response header at 0x%p\n",
WorkContext->RequestHeader,
WorkContext->ResponseHeader ));
KdPrint(( "Open file request parameters at 0x%p, response parameters at 0x%p\n",
WorkContext->RequestParameters,
WorkContext->ResponseParameters ));
}
request = (PREQ_OPEN)WorkContext->RequestParameters;
access = SmbGetUshort( &request->DesiredAccess );
status = SrvCreateFile(
WorkContext,
(USHORT)(access & ~SMB_DA_WRITE_THROUGH), // Allow write behind
(USHORT)0, // SmbFileAttributes
SMB_OFUN_OPEN_OPEN | SMB_OFUN_CREATE_FAIL,
(ULONG)0, // SmbAllocationSize
(PCHAR)(request->Buffer + 1),
END_OF_REQUEST_SMB( WorkContext ),
NULL,
0L,
NULL,
(WorkContext->RequestHeader->Flags & SMB_FLAGS_OPLOCK_NOTIFY_ANY) != 0 ?
OplockTypeBatch :
(WorkContext->RequestHeader->Flags & SMB_FLAGS_OPLOCK) != 0 ?
OplockTypeExclusive : OplockTypeServerBatch,
RestartOpen
);
if (status == STATUS_OPLOCK_BREAK_IN_PROGRESS) {
// The open is blocked (waiting for a comm device or an oplock
// break), do not send a response.
//
SmbStatus = SmbStatusInProgress;
} else if ( WorkContext->Parameters2.Open.TemporaryOpen ) {
// The initial open failed due to a sharing violation, possibly
// caused by an batch oplock. Requeue the open to a blocking
// thread.
//
WorkContext->FspRestartRoutine = SrvRestartSmbReceived;
SrvQueueWorkToBlockingThread( WorkContext );
SmbStatus = SmbStatusInProgress;
} else {
// The open has completed. Generate and send the reply.
//
SmbStatus = GenerateOpenResponse( WorkContext, status );
}
SrvWmiEndContext(WorkContext);
return SmbStatus;
} // SrvSmbOpen
VOID SRVFASTCALL
RestartOpen (
IN PWORK_CONTEXT WorkContext
)
/*++
Routine Description:
Completes processing of an Open SMB. (This is the 'core' Open.)
Arguments:
WorkContext - A pointer to the work context block for this SMB.
Return Value:
None.
--*/
{
SMB_PROCESSOR_RETURN_LOCAL smbStatus = SmbStatusInProgress;
NTSTATUS openStatus = STATUS_SUCCESS;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_OPEN;
SrvWmiStartContext(WorkContext);
openStatus = SrvCheckOplockWaitState( WorkContext->WaitForOplockBreak );
if ( NT_SUCCESS( openStatus ) ) {
openStatus = WorkContext->Irp->IoStatus.Status;
} else {
//
// This open was waiting for an oplock break to occur, but
// timed out. Close our handle to this file, then fail the open.
//
SrvCloseRfcb( WorkContext->Parameters2.Open.Rfcb );
}
WorkContext->Irp->IoStatus.Information = WorkContext->Parameters2.Open.IosbInformation;
smbStatus = GenerateOpenResponse(
WorkContext,
openStatus
);
SrvEndSmbProcessing( WorkContext, smbStatus );
SrvWmiEndContext(WorkContext);
return;
} // RestartOpen
SMB_PROCESSOR_RETURN_TYPE
GenerateOpenResponse (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
)
/*++
Routine Description:
Generates a response to an Open SMB. (This is the 'core' Open.)
Arguments:
WorkContext -
Status - The status of the open operation.
Return Value:
The status of the SMB processing.
--*/
{
PRESP_OPEN response;
PREQ_OPEN request;
NTSTATUS status;
SRV_FILE_INFORMATION_ABBREVIATED srvFileInformation;
PRFCB rfcb;
USHORT access;
PAGED_CODE( );
//
// If the open failed, send an error response.
//
if ( !NT_SUCCESS( OpenStatus ) ) {
SrvSetSmbError( WorkContext, OpenStatus );
return SmbStatusSendResponse;
}
rfcb = WorkContext->Rfcb;
response = (PRESP_OPEN)WorkContext->ResponseParameters;
request = (PREQ_OPEN)WorkContext->RequestParameters;
access = SmbGetUshort( &request->DesiredAccess ); // save for later use
//
// Get the additional information that needs to be returned in the
// response SMB. We always open with FILE_READ_ATTRIBUTES, so no
// access check is required.
//
status = SrvQueryInformationFileAbbreviated(
rfcb->Lfcb->FileHandle,
rfcb->Lfcb->FileObject,
&srvFileInformation,
FALSE,
WorkContext->TreeConnect->Share->ShareType
);
if ( !NT_SUCCESS(status) ) {
IF_DEBUG(ERRORS) {
KdPrint(( "GenerateOpenResponse: SrvQueryInformationFile failed: %X\n",
status ));
}
SrvCloseRfcb( rfcb );
SrvSetSmbError( WorkContext, status );
return SmbStatusSendResponse;
}
rfcb->Mfcb->NonpagedMfcb->OpenFileSize = srvFileInformation.DataSize;
//
// Give the smart card a chance to get into the act
//
if( WorkContext->Endpoint->IsConnectionless && SrvIpxSmartCard.Open != NULL ) {
PVOID handle;
IF_DEBUG( SIPX ) {
KdPrint(( "Trying the smart card for %wZ\n", &rfcb->Mfcb->FileName ));
}
if( SrvIpxSmartCard.Open(
WorkContext->RequestBuffer->Buffer,
rfcb->Lfcb->FileObject,
&rfcb->Mfcb->FileName,
&(WorkContext->ClientAddress->IpxAddress.Address[0].Address[0]),
rfcb->Lfcb->FileObject->Flags & FO_CACHE_SUPPORTED,
&handle
) == TRUE ) {
IF_DEBUG( SIPX ) {
KdPrint(( "%wZ handled by Smart Card. Handle %p\n",
&rfcb->Mfcb->FileName, handle ));
}
rfcb->PagedRfcb->IpxSmartCardContext = handle;
}
}
//
// Set up fields of response SMB. Note that we copy the desired
// access to the granted access in the response. They must be the
// same, else the request would have failed.
//
// !!! This will not be the case for compatibility mode and FCB opens!
//
response->WordCount = 7;
SmbPutUshort( &response->Fid, rfcb->Fid );
SmbPutUshort( &response->FileAttributes, srvFileInformation.Attributes );
SmbPutUlong(
&response->LastWriteTimeInSeconds,
srvFileInformation.LastWriteTimeInSeconds
);
SmbPutUlong( &response->DataSize, srvFileInformation.DataSize.LowPart );
SmbPutUshort(
&response->GrantedAccess,
access );
SmbPutUshort( &response->ByteCount, 0 );
WorkContext->ResponseParameters = NEXT_LOCATION( response, RESP_OPEN, 0 );
IF_DEBUG(TRACE2) KdPrint(( "GenerateOpenResponse complete.\n" ));
return SmbStatusSendResponse;
} // GenerateOpenResponse
SMB_PROCESSOR_RETURN_TYPE
SrvSmbOpenAndX (
SMB_PROCESSOR_PARAMETERS
)
/*++
Routine Description:
Processes an OpenAndX SMB.
Arguments:
SMB_PROCESSOR_PARAMETERS - See smbprocs.h for a description
of the parameters to SMB processor routines.
Return Value:
SMB_PROCESSOR_RETURN_TYPE - See smbprocs.h
--*/
{
PREQ_OPEN_ANDX request;
NTSTATUS status = STATUS_SUCCESS;
USHORT access;
SMB_STATUS smbStatus = SmbStatusInProgress;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_OPEN_AND_X;
SrvWmiStartContext(WorkContext);
IF_SMB_DEBUG(OPEN_CLOSE1) {
KdPrint(( "Open file and X request header at 0x%p, response header at 0x%p\n",
WorkContext->RequestHeader,
WorkContext->ResponseHeader ));
KdPrint(( "Open file and X request parameters at 0x%p, response parameters at 0x%p\n",
WorkContext->RequestParameters,
WorkContext->ResponseParameters ));
}
//
// If we are not on a blocking thread and we don't have a license
// from the license server, shift the request over to the blocking work
// queue since acquiring a license is an expensive operation and we don't
// want to congest our nonblocking worker threads
//
if( WorkContext->UsingBlockingThread == 0 ) {
PSESSION session;
PTREE_CONNECT treeConnect;
status = SrvVerifyUidAndTid(
WorkContext,
&session,
&treeConnect,
ShareTypeWild
);
if ( !NT_SUCCESS(status) ) {
IF_DEBUG(SMB_ERRORS) {
KdPrint(( "SrvSmbOpenAndX: Invalid UID or TID\n" ));
}
smbStatus = GenerateOpenAndXResponse( WorkContext, status );
goto Cleanup;
}
if( session->IsLSNotified == FALSE ) {
//
// Insert the work item at the tail of the blocking work queue.
//
SrvInsertWorkQueueTail(
GET_BLOCKING_WORK_QUEUE(),
(PQUEUEABLE_BLOCK_HEADER)WorkContext
);
smbStatus = SmbStatusInProgress;
goto Cleanup;
}
}
request = (PREQ_OPEN_ANDX)WorkContext->RequestParameters;
access = SmbGetUshort( &request->DesiredAccess ); // save for later use
status = SrvCreateFile(
WorkContext,
access,
SmbGetUshort( &request->FileAttributes ),
SmbGetUshort( &request->OpenFunction ),
SmbGetUlong( &request->AllocationSize ),
(PCHAR)request->Buffer,
END_OF_REQUEST_SMB( WorkContext ),
NULL,
0L,
NULL,
(SmbGetUshort(&request->Flags) & SMB_OPEN_OPBATCH) != 0 ?
OplockTypeBatch :
(SmbGetUshort(&request->Flags) & SMB_OPEN_OPLOCK) != 0 ?
OplockTypeExclusive : OplockTypeServerBatch,
RestartOpenAndX
);
if ( status == STATUS_OPLOCK_BREAK_IN_PROGRESS ) {
//
// The open is blocked (waiting for a comm device or an oplock
// break), do not send a reply.
//
smbStatus = SmbStatusInProgress;
} else if ( WorkContext->Parameters2.Open.TemporaryOpen ) {
//
// The initial open failed due to a sharing violation, possibly
// caused by an batch oplock. Requeue the open to a blocking
// thread.
//
WorkContext->FspRestartRoutine = SrvRestartSmbReceived;
SrvQueueWorkToBlockingThread( WorkContext );
smbStatus = SmbStatusInProgress;
} else {
//
// The open has completed. Generate and send the reply.
//
smbStatus = GenerateOpenAndXResponse( WorkContext, status );
}
Cleanup:
SrvWmiEndContext(WorkContext);
return smbStatus;
} // SrvSmbOpenAndX
VOID SRVFASTCALL
RestartOpenAndX (
PWORK_CONTEXT WorkContext
)
/*++
Routine Description:
Completes processing of an Open and X SMB.
Arguments:
WorkContext - Work context block for the operation.
Return Value:
None.
--*/
{
SMB_PROCESSOR_RETURN_LOCAL smbStatus = SmbStatusInProgress;
NTSTATUS openStatus = STATUS_SUCCESS;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_OPEN_AND_X;
SrvWmiStartContext(WorkContext);
openStatus = SrvCheckOplockWaitState( WorkContext->WaitForOplockBreak );
if ( NT_SUCCESS( openStatus ) ) {
openStatus = WorkContext->Irp->IoStatus.Status;
if( NT_SUCCESS( openStatus ) ) {
//
// It's obvious that the file already existed, because we've
// been working on an oplock break. So set the
// IoStatus.Information field correctly.
//
WorkContext->Irp->IoStatus.Information = FILE_OPENED;
}
} else {
//
// This open was waiting for an oplock break to occur, but
// timed out. Close our handle to this file, then fail the open.
//
SrvCloseRfcb( WorkContext->Parameters2.Open.Rfcb );
}
WorkContext->Irp->IoStatus.Information = WorkContext->Parameters2.Open.IosbInformation;
smbStatus = GenerateOpenAndXResponse(
WorkContext,
openStatus
);
if ( smbStatus == SmbStatusMoreCommands ) {
SrvProcessSmb( WorkContext );
} else {
SrvEndSmbProcessing( WorkContext, SmbStatusSendResponse );
}
SrvWmiEndContext(WorkContext);
return;
} // RestartOpenAndX
SMB_PROCESSOR_RETURN_TYPE
GenerateOpenAndXResponse (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
)
/*++
Routine Description:
Generates a response to an Open and X SMB and setup for furthur
SMB processing.
Arguments:
WorkContext - Work context block for the operation.
OpenStatus - The status of the open operation.
Return Value:
None.
--*/
{
PREQ_OPEN_ANDX request;
PRESP_OPEN_ANDX response;
SRV_FILE_INFORMATION_ABBREVIATED srvFileInformation;
BOOLEAN reqAdditionalInformation;
BOOLEAN reqExtendedResponse;
PRFCB rfcb;
PLFCB lfcb;
PIO_STATUS_BLOCK ioStatusBlock;
UCHAR nextCommand;
USHORT reqAndXOffset;
USHORT access;
USHORT action = 0;
OPLOCK_TYPE oplockType;
NTSTATUS status;
PAGED_CODE( );
//
// If the open failed, send an error response.
//
if ( !NT_SUCCESS( OpenStatus ) ) {
SrvSetSmbError( WorkContext, OpenStatus );
//
// Remap the error if it is ERROR_ALREADY_EXISTS
//
if ( !CLIENT_CAPABLE_OF(NT_STATUS, WorkContext->Connection) &&
SmbGetUshort( &WorkContext->ResponseHeader->Error ) ==
ERROR_ALREADY_EXISTS ) {
SmbPutUshort(
&WorkContext->ResponseHeader->Error,
ERROR_FILE_EXISTS
);
}
return SmbStatusSendResponse;
}
request = (PREQ_OPEN_ANDX)WorkContext->RequestParameters;
response = (PRESP_OPEN_ANDX)WorkContext->ResponseParameters;
access = SmbGetUshort( &request->DesiredAccess ); // save for later use
rfcb = WorkContext->Rfcb;
lfcb = rfcb->Lfcb;
reqExtendedResponse = (BOOLEAN)( (SmbGetUshort(&request->Flags) &
SMB_OPEN_EXTENDED_RESPONSE) != 0);
//
// Attempt to acquire the oplock.
//
if ( WorkContext->TreeConnect->Share->ShareType != ShareTypePrint ) {
if ( (SmbGetUshort( &request->Flags ) & SMB_OPEN_OPBATCH) != 0 ) {
oplockType = OplockTypeBatch;
} else if ( (SmbGetUshort( &request->Flags ) & SMB_OPEN_OPLOCK) != 0 ) {
oplockType = OplockTypeExclusive;
} else {
oplockType = OplockTypeServerBatch;
}
if ( SrvRequestOplock( WorkContext, &oplockType, FALSE ) ) {
//
// The oplock was granted. Save in action so that we tell
// the client he has an oplock and update statistics.
//
action = SMB_OACT_OPLOCK;
INCREMENT_DEBUG_STAT( SrvDbgStatistics.TotalOplocksGranted );
} else {
//
// The oplock request was denied. Update statistics.
//
INCREMENT_DEBUG_STAT( SrvDbgStatistics.TotalOplocksDenied );
}
}
//
// If the file was created, set the EOF location to be the same as
// the size of the file. This is necessary for compatibility with
// OS/2, which only has EOF, not a separate allocation size.
//
ioStatusBlock = &WorkContext->Irp->IoStatus;
if ( (ioStatusBlock->Information == FILE_CREATED) ||
(ioStatusBlock->Information == FILE_OVERWRITTEN) ) {
//
// Extending EOF is only legal if the client has write access
// to the file. If the client doesn't have write access, don't
// extend the file.
//
// *** This is an incompatibility with OS/2.
if ( rfcb->WriteAccessGranted || rfcb->AppendAccessGranted ) {
SetEofToMatchAllocation(
lfcb->FileHandle,
SmbGetUlong( &request->AllocationSize )
);
} else {
SrvStatistics.GrantedAccessErrors++;
}
}
//
// If the consumer requested additional information, find it now.
//
reqAdditionalInformation = (BOOLEAN)( (SmbGetUshort(&request->Flags) &
SMB_OPEN_QUERY_INFORMATION) != 0);
if ( reqAdditionalInformation ||
( !rfcb->WriteAccessGranted && rfcb->AppendAccessGranted) ) {
//
// We always open with at least FILE_READ_ATTRIBUTES, so no
// access check is needed.
//
status = SrvQueryInformationFileAbbreviated(
lfcb->FileHandle,
lfcb->FileObject,
&srvFileInformation,
reqExtendedResponse,
WorkContext->TreeConnect->Share->ShareType
);
if ( !NT_SUCCESS(status) ) {
IF_DEBUG(ERRORS) {
KdPrint(( "SrvSmbOpenAndX: SrvQueryInformationFile failed: "
"%X\n", status ));
}
SrvCloseRfcb( rfcb );
SrvSetSmbError( WorkContext, status );
return SmbStatusSendResponse;
}
rfcb->Mfcb->NonpagedMfcb->OpenFileSize = srvFileInformation.DataSize;
}
//
// Give the smart card a chance to get into the act
//
if( WorkContext->Endpoint->IsConnectionless && SrvIpxSmartCard.Open != NULL ) {
PVOID handle;
IF_DEBUG( SIPX ) {
KdPrint(( "Trying the smart card for %wZ\n", &rfcb->Mfcb->FileName ));
}
if( SrvIpxSmartCard.Open(
WorkContext->RequestBuffer->Buffer,
rfcb->Lfcb->FileObject,
&rfcb->Mfcb->FileName,
&(WorkContext->ClientAddress->IpxAddress.Address[0].Address[0]),
rfcb->Lfcb->FileObject->Flags & FO_CACHE_SUPPORTED,
&handle
) == TRUE ) {
IF_DEBUG( SIPX ) {
KdPrint(( "%wZ handled by Smart Card. Handle %p\n",
&rfcb->Mfcb->FileName, handle ));
}
rfcb->PagedRfcb->IpxSmartCardContext = handle;
}
}
//
// Set up response SMB.
//
nextCommand = request->AndXCommand;
reqAndXOffset = SmbGetUshort( &request->AndXOffset );
if (reqExtendedResponse) {
NTSTATUS ExtendedResponseStatus;
PRESP_EXTENDED_OPEN_ANDX ExtendedResponse;
ExtendedResponse = (PRESP_EXTENDED_OPEN_ANDX)response;
ExtendedResponseStatus = SrvUpdateMaximalAccessRightsInResponse(
WorkContext,
&ExtendedResponse->MaximalAccessRights,
&ExtendedResponse->GuestMaximalAccessRights);
// Fall back to regular response if there was an error in obtainaing
// the maximal access rights
reqExtendedResponse = (ExtendedResponseStatus == STATUS_SUCCESS);
}
response->AndXCommand = nextCommand;
response->AndXReserved = 0;
if (!reqExtendedResponse) {
SmbPutUshort(
&response->AndXOffset,
GET_ANDX_OFFSET(
WorkContext->ResponseHeader,
WorkContext->ResponseParameters,
RESP_OPEN_ANDX,
0
)
);
response->WordCount = 15;
} else {
SmbPutUshort(
&response->AndXOffset,
GET_ANDX_OFFSET(
WorkContext->ResponseHeader,
WorkContext->ResponseParameters,
RESP_EXTENDED_OPEN_ANDX,
0
)
);
response->WordCount = 19;
}
SmbPutUshort( &response->Fid, rfcb->Fid );
//
// If the consumer requested additional information, set appropiate
// fields, else set the fields to zero.
//
if ( reqAdditionalInformation ) {
SmbPutUshort(
&response->FileAttributes,
srvFileInformation.Attributes
);
SmbPutUlong(
&response->LastWriteTimeInSeconds,
srvFileInformation.LastWriteTimeInSeconds
);
SmbPutUlong( &response->DataSize, srvFileInformation.DataSize.LowPart );
access &= SMB_DA_SHARE_MASK;
if( rfcb->ReadAccessGranted && (rfcb->WriteAccessGranted || rfcb->AppendAccessGranted) ) {
access |= SMB_DA_ACCESS_READ_WRITE;
} else if( rfcb->ReadAccessGranted ) {
access |= SMB_DA_ACCESS_READ;
} else if( rfcb->WriteAccessGranted || rfcb->AppendAccessGranted ) {
access |= SMB_DA_ACCESS_WRITE;
}
SmbPutUshort( &response->GrantedAccess, access );
SmbPutUshort( &response->FileType, srvFileInformation.Type );
SmbPutUshort( &response->DeviceState, srvFileInformation.HandleState );
} else {
RtlZeroMemory( (PVOID)&response->FileAttributes, 16 );
}
//
// Bit field mapping of Action:
//
// Lrrr rrrr rrrr rrOO
//
// where:
//
// L - Lock (single-user total file lock status)
// 0 - file opened by another user
// 1 - file is opened only by this user at the present time
//
// O - Open (action taken on open)
// 1 - the file existed and was opened
// 2 - the file did not exist but was created
// 3 - the file existed and was truncated
//
switch ( ioStatusBlock->Information ) {
case FILE_OPENED:
action |= SMB_OACT_OPENED;
break;
case FILE_CREATED:
action |= SMB_OACT_CREATED;
break;
case FILE_OVERWRITTEN:
action |= SMB_OACT_TRUNCATED;
break;
default:
IF_DEBUG(ERRORS) {
KdPrint(( "Unknown Information value in IO status block: 0x%p\n",
(PVOID)(ioStatusBlock->Information) ));
}
}
SmbPutUshort( &response->Action, action );
SmbPutUlong( &response->ServerFid, (ULONG)0 );
SmbPutUshort( &response->Reserved, 0 );
SmbPutUshort( &response->ByteCount, 0 );
WorkContext->ResponseParameters = (PCHAR)WorkContext->ResponseHeader +
SmbGetUshort( &response->AndXOffset );
//
// Test for legal followon command.
//
switch ( nextCommand ) {
case SMB_COM_NO_ANDX_COMMAND:
break;
case SMB_COM_READ:
case SMB_COM_READ_ANDX:
case SMB_COM_IOCTL:
//
// Make sure the AndX command is still within the received SMB
//
if( (PCHAR)WorkContext->RequestHeader + reqAndXOffset <=
END_OF_REQUEST_SMB( WorkContext ) ) {
break;
}
/* Falls Through */
default: // Illegal followon command
IF_DEBUG(SMB_ERRORS) {
KdPrint(( "SrvSmbOpenAndX: Illegal followon command: 0x%lx\n",
nextCommand ));
}
//
// Return an error indicating that the followon command was bad.
// Note that the open is still considered successful, so the
// file remains open.
//
SrvSetSmbError( WorkContext, STATUS_INVALID_SMB );
return SmbStatusSendResponse;
}
//
// If there is an AndX command, set up to process it. Otherwise,
// indicate completion to the caller.
//
if ( nextCommand != SMB_COM_NO_ANDX_COMMAND ) {
WorkContext->NextCommand = nextCommand;
WorkContext->RequestParameters = (PCHAR)WorkContext->RequestHeader +
reqAndXOffset;
return SmbStatusMoreCommands;
}
IF_DEBUG(TRACE2) KdPrint(( "SrvSmbOpenAndX complete.\n" ));
return SmbStatusSendResponse;
} // GenerateOpenAndXResponse
SMB_TRANS_STATUS
SrvSmbOpen2 (
IN OUT PWORK_CONTEXT WorkContext
)
/*++
Routine Description:
Processes an Open2 SMB. This request arrives in a Transaction2 SMB.
Arguments:
WorkContext - Supplies the address of a Work Context Block
describing the current request. See smbtypes.h for a more
complete description of the valid fields.
Return Value:
BOOLEAN - Indicates whether an error occurred. See smbtypes.h for a
more complete description.
--*/
{
PREQ_OPEN2 request;
PRESP_OPEN2 response;
NTSTATUS status = STATUS_SUCCESS;
SMB_TRANS_STATUS SmbStatus = SmbTransStatusInProgress;
USHORT access;
PTRANSACTION transaction;
ULONG eaErrorOffset = 0;
USHORT os2EaErrorOffset = 0;
PFILE_FULL_EA_INFORMATION ntFullEa;
ULONG ntFullEaBufferLength;
PFEALIST feaList;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_OPEN2;
SrvWmiStartContext(WorkContext);
transaction = WorkContext->Parameters.Transaction;
request = (PREQ_OPEN2)transaction->InParameters;
response = (PRESP_OPEN2)transaction->OutParameters;
//
// Verify that enough parameter bytes were sent and that we're allowed
// to return enough parameter bytes.
//
if ( (transaction->ParameterCount < sizeof(REQ_OPEN2)) ||
(transaction->MaxParameterCount < sizeof(RESP_OPEN2)) ) {
//
// Not enough parameter bytes were sent.
//
IF_DEBUG(SMB_ERRORS)
KdPrint(( "SrvSmbOpen2: bad parameter byte counts: %ld %ld\n",
transaction->ParameterCount,
transaction->MaxParameterCount ));
SrvLogInvalidSmb( WorkContext );
SrvSetSmbError2( WorkContext, STATUS_INVALID_SMB, TRUE );
status = STATUS_INVALID_SMB;
goto err_exit;
}
//
// Convert the EA list to NT style.
//
eaErrorOffset = 0;
feaList = (PFEALIST)transaction->InData;
//
// Make sure that the value in Fealist->cbList is legitimate and that
// there is at least sufficient data for a single EA.
//
// This code will fail if no EA list is indicated. Don't know
// if this is correct, but it was the previous behavior so
// it's been enforced.
//
if ( transaction->DataCount <= sizeof(FEALIST) ||
SmbGetUlong( &feaList->cbList ) <= sizeof(FEALIST) ||
SmbGetUlong( &feaList->cbList ) > transaction->DataCount) {
IF_DEBUG(SMB_ERRORS) {
KdPrint(( "EA list size bad: size = %ld, data sent was %ld\n",
SmbGetUlong( &feaList->cbList ), transaction->DataCount ));
}
SrvSetSmbError2( WorkContext, STATUS_OS2_EA_LIST_INCONSISTENT, TRUE );
status = STATUS_OS2_EA_LIST_INCONSISTENT;
goto err_exit;
}
//
// Convert the FEALIST to NT style.
//
status = SrvOs2FeaListToNt(
feaList,
&ntFullEa,
&ntFullEaBufferLength,
&os2EaErrorOffset
);
if ( !NT_SUCCESS(status) ) {
SrvSetSmbError2( WorkContext, status, TRUE );
goto err_exit;
}
access = SmbGetUshort( &request->DesiredAccess ); // save for later use
status = SrvCreateFile(
WorkContext,
access,
SmbGetUshort( &request->FileAttributes ),
SmbGetUshort( &request->OpenFunction ),
SmbGetUlong( &request->AllocationSize ),
(PCHAR)request->Buffer,
END_OF_TRANSACTION_PARAMETERS( transaction ),
ntFullEa,
ntFullEaBufferLength,
&eaErrorOffset,
(SmbGetUshort(&request->Flags) & SMB_OPEN_OPBATCH) != 0 ?
OplockTypeBatch :
(SmbGetUshort(&request->Flags) & SMB_OPEN_OPLOCK) != 0 ?
OplockTypeExclusive : OplockTypeServerBatch,
RestartOpen2
);
if ( status == STATUS_OPLOCK_BREAK_IN_PROGRESS ) {
//
// The open is blocked (waiting for a comm device or an oplock
// break), do not send a reply.
//
//
// Save a pointer to the full ea structure
//
WorkContext->Parameters2.Open.NtFullEa = ntFullEa;
WorkContext->Parameters2.Open.EaErrorOffset = eaErrorOffset;
SmbStatus = SmbTransStatusInProgress;
goto Cleanup;
} else if ( WorkContext->Parameters2.Open.TemporaryOpen ) {
//
// The initial open failed due to a sharing violation, possibly
// caused by an batch oplock. Requeue the open to a blocking
// thread.
//
// We need to free the EA buffer in this case.
//
DEALLOCATE_NONPAGED_POOL(ntFullEa);
WorkContext->FspRestartRoutine = (PRESTART_ROUTINE)ExecuteTransaction;
SrvQueueWorkToBlockingThread( WorkContext );
SmbStatus = SmbStatusInProgress;
goto Cleanup;
} else {
//
// Save a pointer to the full ea structure
//
WorkContext->Parameters2.Open.NtFullEa = ntFullEa;
WorkContext->Parameters2.Open.EaErrorOffset = eaErrorOffset;
//
// The open has completed. Generate and send the reply.
//
SmbStatus = GenerateOpen2Response( WorkContext, status );
goto Cleanup;
}
err_exit:
RtlZeroMemory( (PVOID)&response->Fid, 24 );
SmbPutUshort( &response->EaErrorOffset, os2EaErrorOffset );
SmbPutUlong( &response->EaLength, 0 );
transaction->SetupCount = 0;
transaction->ParameterCount = sizeof(RESP_OPEN2);
transaction->DataCount = 0;
SmbStatus = SmbTransStatusErrorWithData;
Cleanup:
SrvWmiEndContext(WorkContext);
return SmbStatus;
} // SrvSmbOpen2
VOID SRVFASTCALL
RestartOpen2 (
PWORK_CONTEXT WorkContext
)
/*++
Routine Description:
Completes processing of an Open2 SMB.
Arguments:
WorkContext - Work context block for the operation.
Return Value:
None.
--*/
{
SMB_TRANS_STATUS smbStatus = SmbTransStatusInProgress;
NTSTATUS openStatus = STATUS_SUCCESS;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_OPEN2;
SrvWmiStartContext(WorkContext);
openStatus = SrvCheckOplockWaitState( WorkContext->WaitForOplockBreak );
if ( NT_SUCCESS( openStatus ) ) {
openStatus = WorkContext->Irp->IoStatus.Status;
if( NT_SUCCESS( openStatus ) ) {
//
// It's obvious that the file already existed, because we've
// been working on an oplock break. So set the
// IoStatus.Information field correctly.
//
WorkContext->Irp->IoStatus.Information = FILE_OPENED;
}
} else {
//
// This open was waiting for an oplock break to occur, but
// timed out. Close our handle to this file, then fail the open.
//
SrvCloseRfcb( WorkContext->Parameters2.Open.Rfcb );
}
WorkContext->Irp->IoStatus.Information = WorkContext->Parameters2.Open.IosbInformation;
smbStatus = GenerateOpen2Response(
WorkContext,
openStatus
);
SrvCompleteExecuteTransaction( WorkContext, smbStatus );
SrvWmiEndContext(WorkContext);
return;
} // RestartOpen2
SMB_TRANS_STATUS
GenerateOpen2Response (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
)
/*++
Routine Description:
Generates a response to an Open and X SMB and setup for furthur
SMB processing.
Arguments:
WorkContext - Work context block for the operation.
OpenStatus - The status of the open operation.
Return Value:
None.
--*/
{
PREQ_OPEN2 request;
PRESP_OPEN2 response;
PRFCB rfcb;
PLFCB lfcb;
NTSTATUS status;
BOOLEAN reqAdditionalInformation;
SRV_FILE_INFORMATION_ABBREVIATED srvFileInformation;
BOOLEAN reqEaLength;
FILE_EA_INFORMATION fileEaInformation;
USHORT access;
USHORT action = 0;
PTRANSACTION transaction;
ULONG eaErrorOffset = 0;
USHORT os2EaErrorOffset = 0;
PFILE_FULL_EA_INFORMATION ntFullEa;
PFEALIST feaList;
OPLOCK_TYPE oplockType;
PAGED_CODE( );
transaction = WorkContext->Parameters.Transaction;
request = (PREQ_OPEN2)transaction->InParameters;
response = (PRESP_OPEN2)transaction->OutParameters;
feaList = (PFEALIST)transaction->InData;
ntFullEa = WorkContext->Parameters2.Open.NtFullEa;
eaErrorOffset = WorkContext->Parameters2.Open.EaErrorOffset;
access = SmbGetUshort( &request->DesiredAccess ); // save for later use
//
// If the open failed, send an error response.
//
if ( !NT_SUCCESS( OpenStatus ) ) {
SrvSetSmbError( WorkContext, OpenStatus );
//
// Remap the error if it is ERROR_ALREADY_EXISTS.
//
if ( !CLIENT_CAPABLE_OF(NT_STATUS,WorkContext->Connection) &&
SmbGetUshort( &WorkContext->ResponseHeader->Error ) ==
ERROR_ALREADY_EXISTS ) {
SmbPutUshort(
&WorkContext->ResponseHeader->Error,
ERROR_FILE_EXISTS
);
}
//
// If an EA error offset was returned, convert it from an offset
// into the NT full EA list to an offset in the OS/2 1.2 FEALIST.
//
if ( eaErrorOffset != 0 ) {
os2EaErrorOffset = SrvGetOs2FeaOffsetOfError(
eaErrorOffset,
ntFullEa,
feaList
);
}
DEALLOCATE_NONPAGED_POOL( ntFullEa );
goto err_exit;
}
DEALLOCATE_NONPAGED_POOL( ntFullEa );
//
// If the file was created, set the EOF location to be the same as
// the size of the file. This is necessary for compatibility with
// OS/2, which only has EOF, not a separate allocation size.
//
rfcb = WorkContext->Rfcb;
lfcb = rfcb->Lfcb;
if ( (WorkContext->Irp->IoStatus.Information == FILE_CREATED) ||
(WorkContext->Irp->IoStatus.Information == FILE_OVERWRITTEN) ) {
//
// Extending EOF is only legal if the client has write access
// to the file. If the client doesn't have write access, don't
// extend the file.
//
// *** This is an incompatibility with OS/2.
if ( rfcb->WriteAccessGranted || rfcb->AppendAccessGranted ) {
SetEofToMatchAllocation(
lfcb->FileHandle,
SmbGetUlong( &request->AllocationSize )
);
} else {
SrvStatistics.GrantedAccessErrors++;
}
}
//
// If the consumer requested additional information, find it now.
//
reqAdditionalInformation =
(BOOLEAN)((SmbGetUshort( &request->Flags ) &
SMB_OPEN_QUERY_INFORMATION) != 0);
reqEaLength =
(BOOLEAN)((SmbGetUshort( &request->Flags ) &
SMB_OPEN_QUERY_EA_LENGTH) != 0);
if ( reqAdditionalInformation ||
(!rfcb->WriteAccessGranted && rfcb->AppendAccessGranted) ) {
//
// We always open with at least FILE_READ_ATTRIBUTES, so no
// access check is needed.
//
status = SrvQueryInformationFileAbbreviated(
lfcb->FileHandle,
lfcb->FileObject,
&srvFileInformation,
FALSE,
WorkContext->TreeConnect->Share->ShareType
);
if ( !NT_SUCCESS(status) ) {
IF_DEBUG(ERRORS) {
KdPrint(( "SrvSmbOpen2: SrvQueryInformationFile failed: "
"%X\n", status ));
}
SrvCloseRfcb( rfcb );
SrvSetSmbError2( WorkContext, status, TRUE );
goto err_exit;
}
rfcb->Mfcb->NonpagedMfcb->OpenFileSize = srvFileInformation.DataSize;
}
if ( reqEaLength ) {
IO_STATUS_BLOCK eaIoStatusBlock;
status = NtQueryInformationFile(
lfcb->FileHandle,
&eaIoStatusBlock,
&fileEaInformation,
sizeof(FILE_EA_INFORMATION),
FileEaInformation
);
if ( NT_SUCCESS(status) ) {
status = eaIoStatusBlock.Status;
}
if ( !NT_SUCCESS(status) ) {
INTERNAL_ERROR(
ERROR_LEVEL_UNEXPECTED,
"SrvSmbOpen2: NtQueryInformationFile (file information)"
"returned %X",
status,
NULL
);
SrvCloseRfcb( rfcb );
SrvSetSmbError2( WorkContext, status, TRUE );
goto err_exit;
} else {
//
// Adjust the EA size. If there are no EAs, OS/2 expects
// EA size = 4.
//
if (fileEaInformation.EaSize == 0) {
fileEaInformation.EaSize = 4;
}
}
} else {
fileEaInformation.EaSize = 0;
}
//
// Attempt to acquire the oplock.
//
if ( WorkContext->TreeConnect->Share->ShareType != ShareTypePrint ) {
if ( (SmbGetUshort( &request->Flags ) & SMB_OPEN_OPBATCH) != 0 ) {
oplockType = OplockTypeBatch;
} else if ( (SmbGetUshort( &request->Flags ) & SMB_OPEN_OPLOCK) != 0 ) {
oplockType = OplockTypeExclusive;
} else {
oplockType = OplockTypeServerBatch;
}
if ( SrvRequestOplock( WorkContext, &oplockType, FALSE ) ) {
action = SMB_OACT_OPLOCK;
INCREMENT_DEBUG_STAT( SrvDbgStatistics.TotalOplocksGranted );
} else {
INCREMENT_DEBUG_STAT( SrvDbgStatistics.TotalOplocksDenied );
}
}
//
// Set up response SMB.
//
SmbPutUshort( &response->Fid, rfcb->Fid );
//
// If the consumer requested additional information, set appropiate
// fields, else set the fields to zero.
//
if ( reqAdditionalInformation ) {
SmbPutUshort(
&response->FileAttributes,
srvFileInformation.Attributes
);
SmbPutUlong( &response->DataSize, srvFileInformation.DataSize.LowPart );
SmbPutUshort( &response->GrantedAccess, access );
SmbPutUshort( &response->FileType, srvFileInformation.Type );
SmbPutUshort( &response->DeviceState, srvFileInformation.HandleState );
} else {
RtlZeroMemory( (PVOID)&response->FileAttributes, 16 );
}
//
// Bit field mapping of Action:
//
// Lrrr rrrr rrrr rrOO
//
// where:
//
// L - Lock (single-user total file lock status)
// 0 - file opened by another user
// 1 - file is opened only by this user at the present time
//
// O - Open (action taken on open)
// 1 - the file existed and was opened
// 2 - the file did not exist but was created
// 3 - the file existed and was truncated
//
switch ( WorkContext->Irp->IoStatus.Information ) {
case FILE_OPENED:
action |= SMB_OACT_OPENED;
break;
case FILE_CREATED:
action |= SMB_OACT_CREATED;
break;
case FILE_OVERWRITTEN:
action |= SMB_OACT_TRUNCATED;
break;
default:
INTERNAL_ERROR(
ERROR_LEVEL_UNEXPECTED,
"SrvSmbOpen2: Unknown Information value in IO status"
"block: 0x%lx\n",
WorkContext->Irp->IoStatus.Information,
NULL
);
SrvLogServiceFailure( SRV_SVC_IO_CREATE_FILE,
(ULONG)WorkContext->Irp->IoStatus.Information );
}
SmbPutUshort( &response->Action, action );
SmbPutUlong( &response->ServerFid, (ULONG)0 );
SmbPutUshort( &response->EaErrorOffset, 0 );
SmbPutUlong( &response->EaLength, fileEaInformation.EaSize );
transaction->SetupCount = 0;
transaction->ParameterCount = sizeof(RESP_OPEN2);
transaction->DataCount = 0;
IF_DEBUG(TRACE2) KdPrint(( "SrvSmbOpen2 complete.\n" ));
return SmbTransStatusSuccess;
err_exit:
RtlZeroMemory( (PVOID)&response->Fid, 24 );
SmbPutUshort( &response->EaErrorOffset, os2EaErrorOffset );
SmbPutUlong( &response->EaLength, 0 );
transaction->SetupCount = 0;
transaction->ParameterCount = sizeof(RESP_OPEN2);
transaction->DataCount = 0;
return SmbTransStatusErrorWithData;
} // GenerateOpen2Response
SMB_PROCESSOR_RETURN_TYPE
SrvSmbNtCreateAndX (
SMB_PROCESSOR_PARAMETERS
)
/*++
Routine Description:
Processes an NtCreateAndX SMB.
Arguments:
SMB_PROCESSOR_PARAMETERS - See smbprocs.h for a description
of the parameters to SMB processor routines.
Return Value:
SMB_PROCESSOR_RETURN_TYPE - See smbprocs.h
--*/
{
PREQ_NT_CREATE_ANDX request;
ULONG flags;
NTSTATUS status = STATUS_SUCCESS;
SMB_STATUS SmbStatus = SmbStatusInProgress;
LARGE_INTEGER allocationSize;
UNICODE_STRING fileName;
PUCHAR name;
USHORT nameLength;
SECURITY_QUALITY_OF_SERVICE qualityOfService;
BOOLEAN isUnicode;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_NT_CREATE_AND_X;
SrvWmiStartContext(WorkContext);
IF_SMB_DEBUG(OPEN_CLOSE1) {
KdPrint(( "Create file and X request header at 0x%p, response header at 0x%p\n",
WorkContext->RequestHeader,
WorkContext->ResponseHeader ));
KdPrint(( "Create file and X request parameters at 0x%p, response parameters at 0x%p\n",
WorkContext->RequestParameters,
WorkContext->ResponseParameters ));
}
request = (PREQ_NT_CREATE_ANDX)WorkContext->RequestParameters;
allocationSize.HighPart = SmbGetUlong( &request->AllocationSize.HighPart );
allocationSize.LowPart = SmbGetUlong( &request->AllocationSize.LowPart );
flags = SmbGetUlong( &request->Flags );
//
// First verify that the file path name does not extend beyond the
// end of the SMB.
//
isUnicode = SMB_IS_UNICODE( WorkContext );
//
// if this request has IfModifiedSince fields, the request is of a
// slightly different format, the Name field is lower.
//
name = (PUCHAR)request->Buffer;
if ( isUnicode ) {
name = ALIGN_SMB_WSTR( name );
}
nameLength = SmbGetUshort( &request->NameLength );
if ( name + nameLength > ( END_OF_REQUEST_SMB( WorkContext ) + 1 ) ) {
status = STATUS_INVALID_SMB;
SmbStatus = GenerateNtCreateAndXResponse( WorkContext, STATUS_INVALID_SMB );
goto Cleanup;
}
//
// Convert the file name to a Unicode string.
//
status = SrvMakeUnicodeString(
isUnicode,
&fileName,
name,
&nameLength
);
if ( !NT_SUCCESS( status ) ) {
status = STATUS_INSUFF_SERVER_RESOURCES;
SmbStatus = GenerateNtCreateAndXResponse(
WorkContext,
STATUS_INSUFF_SERVER_RESOURCES
);
goto Cleanup;
}
//
// *** We always ask for STATIC tracking, not DYNAMIC, because we
// don't support dynamic tracking over the net yet.
//
// !!! Note that once we support dynamic tracking, we MUST CHANGE
// THE NAMED PIPE PROCESSING to not do writes/transceives at DPC
// level, because the NPFS needs to call SeCreateClientSecurity
// on every write when dynamic tracking is selected!
//
qualityOfService.Length = sizeof( qualityOfService );
qualityOfService.ImpersonationLevel =
SmbGetUlong( &request->ImpersonationLevel );
qualityOfService.ContextTrackingMode = FALSE;
//qualityOfService.ContextTrackingMode = (BOOLEAN)
// (request->SecurityFlags & SMB_SECURITY_DYNAMIC_TRACKING);
qualityOfService.EffectiveOnly = (BOOLEAN)
(request->SecurityFlags & SMB_SECURITY_EFFECTIVE_ONLY);
status = SrvNtCreateFile(
WorkContext,
SmbGetUlong( &request->RootDirectoryFid ),
SmbGetUlong( &request->DesiredAccess ),
allocationSize,
SmbGetUlong( &request->FileAttributes ),
SmbGetUlong( &request->ShareAccess ),
SmbGetUlong( &request->CreateDisposition ),
SmbGetUlong( &request->CreateOptions),
NULL,
&fileName,
NULL,
0,
NULL,
flags,
&qualityOfService,
(request->Flags & NT_CREATE_REQUEST_OPBATCH) != 0 ?
OplockTypeBatch :
(request->Flags & NT_CREATE_REQUEST_OPLOCK) != 0 ?
OplockTypeExclusive : OplockTypeServerBatch,
RestartNtCreateAndX
);
//
// Free the unicode file name buffer if it has been allocated.
//
if ( !isUnicode ) {
RtlFreeUnicodeString( &fileName );
}
if ( status == STATUS_OPLOCK_BREAK_IN_PROGRESS ) {
//
// The open is blocked (waiting for a comm device or an oplock
// break), do not send a reply.
//
SmbStatus = SmbStatusInProgress;
} else if ( WorkContext->Parameters2.Open.TemporaryOpen ) {
//
// The initial open failed due to a sharing violation, possibly
// caused by an batch oplock. Requeue the open to a blocking
// thread.
//
WorkContext->FspRestartRoutine = SrvRestartSmbReceived;
SrvQueueWorkToBlockingThread( WorkContext );
SmbStatus = SmbStatusInProgress;
} else {
//
// The open has completed. Generate and send the reply.
//
SmbStatus = GenerateNtCreateAndXResponse( WorkContext, status );
}
Cleanup:
SrvWmiEndContext(WorkContext);
return SmbStatus;
} // SrvSmbNtCreateAndX
VOID SRVFASTCALL
RestartNtCreateAndX (
PWORK_CONTEXT WorkContext
)
/*++
Routine Description:
Completes processing of an Nt Create and X SMB.
Arguments:
WorkContext - Work context block for the operation.
Return Value:
None.
--*/
{
SMB_PROCESSOR_RETURN_LOCAL smbStatus = SmbStatusInProgress;
NTSTATUS openStatus = STATUS_SUCCESS;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_NT_CREATE_AND_X;
SrvWmiStartContext(WorkContext);
openStatus = SrvCheckOplockWaitState( WorkContext->WaitForOplockBreak );
if ( NT_SUCCESS( openStatus ) ) {
openStatus = WorkContext->Irp->IoStatus.Status;
} else {
//
// This open was waiting for an oplock break to occur, but
// timed out. Close our handle to this file, then fail the open.
//
SrvCloseRfcb( WorkContext->Parameters2.Open.Rfcb );
}
WorkContext->Irp->IoStatus.Information = WorkContext->Parameters2.Open.IosbInformation;
smbStatus = GenerateNtCreateAndXResponse(
WorkContext,
openStatus
);
if ( smbStatus == SmbStatusMoreCommands ) {
SrvProcessSmb( WorkContext );
} else {
SrvEndSmbProcessing( WorkContext, SmbStatusSendResponse );
}
SrvWmiEndContext(WorkContext);
return;
} // RestartNtCreateAndX
SMB_PROCESSOR_RETURN_TYPE
GenerateNtCreateAndXResponse (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
)
/*++
Routine Description:
Generates a response to an Nt Create and X SMB and setup for furthur
SMB processing.
Arguments:
WorkContext - Work context block for the operation.
OpenStatus - The status of the open operation.
Return Value:
None.
Notes:
--*/
{
PREQ_NT_CREATE_ANDX request;
PRESP_NT_CREATE_ANDX response;
SMB_PROCESSOR_RETURN_LOCAL rc;
BOOLEAN GenerateExtendedResponse = FALSE;
SRV_NT_FILE_INFORMATION srvNtFileInformation;
PRFCB rfcb;
PIO_STATUS_BLOCK ioStatusBlock;
UCHAR nextCommand;
USHORT reqAndXOffset;
OPLOCK_TYPE oplockType;
UCHAR oplockLevel;
BOOLEAN allowLevelII;
BOOLEAN extendedRequested;
ULONG CreateAction = (ULONG)WorkContext->Irp->IoStatus.Information;
ULONG desiredAccess;
NTSTATUS status;
PAGED_CODE( );
//
// If the open failed, send an error response.
//
if ( !NT_SUCCESS( OpenStatus ) ) {
SrvSetSmbError( WorkContext, OpenStatus );
//
// Remap the error if it is ERROR_ALREADY_EXISTS
//
if ( !CLIENT_CAPABLE_OF(NT_STATUS, WorkContext->Connection) &&
SmbGetUshort( &WorkContext->ResponseHeader->Error ) ==
ERROR_ALREADY_EXISTS ) {
SmbPutUshort(
&WorkContext->ResponseHeader->Error,
ERROR_FILE_EXISTS
);
}
return SmbStatusSendResponse;
}
request = (PREQ_NT_CREATE_ANDX)WorkContext->RequestParameters;
response = (PRESP_NT_CREATE_ANDX)WorkContext->ResponseParameters;
//
// Does the client want extended info in the response?
//
extendedRequested = ((request->Flags & NT_CREATE_REQUEST_EXTENDED_RESPONSE) != 0 );
desiredAccess = SmbGetUlong( &request->DesiredAccess );
rfcb = WorkContext->Rfcb;
//
// Attempt to acquire the oplock.
//
if ( desiredAccess != DELETE &&
!(request->CreateOptions & FILE_DIRECTORY_FILE) ) {
if ( request->Flags & NT_CREATE_REQUEST_OPLOCK ) {
allowLevelII = CLIENT_CAPABLE_OF( LEVEL_II_OPLOCKS, WorkContext->Connection );
if ( request->Flags & NT_CREATE_REQUEST_OPBATCH ) {
oplockType = OplockTypeBatch;
oplockLevel = SMB_OPLOCK_LEVEL_BATCH;
} else {
oplockType = OplockTypeExclusive;
oplockLevel = SMB_OPLOCK_LEVEL_EXCLUSIVE;
}
} else {
allowLevelII = FALSE;
oplockType = OplockTypeServerBatch;
oplockLevel = SMB_OPLOCK_LEVEL_NONE;
}
if( SrvRequestOplock( WorkContext, &oplockType, allowLevelII ) ) {
//
// The oplock was granted. Check to see if it was a level 2.
//
if ( oplockType == OplockTypeShareRead ) {
oplockLevel = SMB_OPLOCK_LEVEL_II;
}
INCREMENT_DEBUG_STAT( SrvDbgStatistics.TotalOplocksGranted );
} else {
//
// The oplock request was denied.
//
oplockLevel = SMB_OPLOCK_LEVEL_NONE;
INCREMENT_DEBUG_STAT( SrvDbgStatistics.TotalOplocksDenied );
}
} else {
oplockLevel = SMB_OPLOCK_LEVEL_NONE;
}
//
// If the file was created, set the EOF location to be the same as
// the size of the file. This is necessary for compatibility with
// OS/2, which only has EOF, not a separate allocation size.
//
ioStatusBlock = &WorkContext->Irp->IoStatus;
//
// We always open with at least FILE_READ_ATTRIBUTES, so no
// access check is needed.
//
status = SrvQueryNtInformationFile(
rfcb->Lfcb->FileHandle,
rfcb->Lfcb->FileObject,
rfcb->ShareType,
extendedRequested,
&srvNtFileInformation
);
if ( !NT_SUCCESS(status) ) {
IF_DEBUG(ERRORS) {
KdPrint(( "SrvSmbNtCreateAndX: SrvQueryNtInformationFile failed: "
"%X\n", status ));
}
SrvCloseRfcb( rfcb );
SrvSetSmbError( WorkContext, status );
return SmbStatusSendResponse;
}
//
// Save parts of the file info in the MFCB for fast tests
//
rfcb->Mfcb->NonpagedMfcb->OpenFileSize.QuadPart =
srvNtFileInformation.NwOpenInfo.EndOfFile.QuadPart;
rfcb->Mfcb->NonpagedMfcb->OpenFileAttributes =
srvNtFileInformation.NwOpenInfo.FileAttributes;
// If the extended response is required then
if ( extendedRequested ) {
NTSTATUS ExtendedResponseStatus;
PRESP_EXTENDED_NT_CREATE_ANDX pExtendedResponse;
pExtendedResponse = (PRESP_EXTENDED_NT_CREATE_ANDX)response;
ExtendedResponseStatus = SrvUpdateMaximalAccessRightsInResponse(
WorkContext,
&pExtendedResponse->MaximalAccessRights,
&pExtendedResponse->GuestMaximalAccessRights);
GenerateExtendedResponse = (ExtendedResponseStatus == STATUS_SUCCESS);
}
//
// Set up response SMB.
//
nextCommand = request->AndXCommand;
reqAndXOffset = SmbGetUshort( &request->AndXOffset );
response->AndXCommand = nextCommand;
response->AndXReserved = 0;
if (GenerateExtendedResponse) {
SmbPutUshort(
&response->AndXOffset,
GET_ANDX_OFFSET(
WorkContext->ResponseHeader,
WorkContext->ResponseParameters,
RESP_EXTENDED_NT_CREATE_ANDX,
0
)
);
response->WordCount = 42;
} else {
SmbPutUshort(
&response->AndXOffset,
GET_ANDX_OFFSET(
WorkContext->ResponseHeader,
WorkContext->ResponseParameters,
RESP_NT_CREATE_ANDX,
0
)
);
response->WordCount = 34;
}
response->OplockLevel = oplockLevel;
SmbPutUshort( &response->Fid, rfcb->Fid );
SmbPutUlong( &response->CreateAction, CreateAction );
SmbPutUlong(
&response->CreationTime.HighPart,
srvNtFileInformation.NwOpenInfo.CreationTime.HighPart
);
SmbPutUlong(
&response->CreationTime.LowPart,
srvNtFileInformation.NwOpenInfo.CreationTime.LowPart
);
SmbPutUlong(
&response->LastAccessTime.HighPart,
srvNtFileInformation.NwOpenInfo.LastAccessTime.HighPart
);
SmbPutUlong(
&response->LastAccessTime.LowPart,
srvNtFileInformation.NwOpenInfo.LastAccessTime.LowPart
);
SmbPutUlong(
&response->LastWriteTime.HighPart,
srvNtFileInformation.NwOpenInfo.LastWriteTime.HighPart
);
SmbPutUlong(
&response->LastWriteTime.LowPart,
srvNtFileInformation.NwOpenInfo.LastWriteTime.LowPart
);
SmbPutUlong(
&response->ChangeTime.HighPart,
srvNtFileInformation.NwOpenInfo.ChangeTime.HighPart
);
SmbPutUlong(
&response->ChangeTime.LowPart,
srvNtFileInformation.NwOpenInfo.ChangeTime.LowPart
);
SmbPutUlong( &response->FileAttributes, srvNtFileInformation.NwOpenInfo.FileAttributes );
SmbPutUlong(
&response->AllocationSize.HighPart,
srvNtFileInformation.NwOpenInfo.AllocationSize.HighPart
);
SmbPutUlong(
&response->AllocationSize.LowPart,
srvNtFileInformation.NwOpenInfo.AllocationSize.LowPart
);
SmbPutUlong(
&response->EndOfFile.HighPart,
srvNtFileInformation.NwOpenInfo.EndOfFile.HighPart
);
SmbPutUlong(
&response->EndOfFile.LowPart,
srvNtFileInformation.NwOpenInfo.EndOfFile.LowPart
);
SmbPutUshort( &response->FileType, srvNtFileInformation.Type );
SmbPutUshort( &response->DeviceState, srvNtFileInformation.HandleState );
response->Directory = (srvNtFileInformation.NwOpenInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? TRUE : FALSE;
SmbPutUshort( &response->ByteCount, 0 );
WorkContext->ResponseParameters = (PCHAR)WorkContext->ResponseHeader +
SmbGetUshort( &response->AndXOffset );
//
// Test for legal followon command.
//
switch ( nextCommand ) {
case SMB_COM_NO_ANDX_COMMAND:
break;
case SMB_COM_READ:
case SMB_COM_READ_ANDX:
case SMB_COM_IOCTL:
//
// Make sure the AndX command is still within the received SMB
//
if( (PCHAR)WorkContext->RequestHeader + reqAndXOffset <=
END_OF_REQUEST_SMB( WorkContext ) ) {
break;
}
/* Falls Through */
default: // Illegal followon command
IF_DEBUG(SMB_ERRORS) {
KdPrint(( "SrvSmbNtCreateAndX: Illegal followon command: 0x%lx\n",
nextCommand ));
}
//
// Return an error indicating that the followon command was bad.
// Note that the open is still considered successful, so the
// file remains open.
//
SrvSetSmbError( WorkContext, STATUS_INVALID_SMB );
return SmbStatusSendResponse;
}
//
// If there is an AndX command, set up to process it. Otherwise,
// indicate completion to the caller.
//
if ( nextCommand != SMB_COM_NO_ANDX_COMMAND ) {
WorkContext->NextCommand = nextCommand;
WorkContext->RequestParameters = (PCHAR)WorkContext->RequestHeader +
reqAndXOffset;
return SmbStatusMoreCommands;
}
rc = SmbStatusSendResponse;
IF_DEBUG(TRACE2) KdPrint(( "SrvSmbNtCreateAndX complete.\n" ));
return rc;
} // GenerateNtCreateAndXResponse
SMB_TRANS_STATUS
SrvSmbCreateWithSdOrEa (
IN OUT PWORK_CONTEXT WorkContext
)
/*++
Routine Description:
Processes an Create with SD or EA SMB. This request arrives in an
Nt Transaction SMB.
Arguments:
WorkContext - Supplies the address of a Work Context Block
describing the current request. See smbtypes.h for a more
complete description of the valid fields.
Return Value:
BOOLEAN - Indicates whether an error occurred. See smbtypes.h for a
more complete description.
--*/
{
PREQ_CREATE_WITH_SD_OR_EA request;
PRESP_CREATE_WITH_SD_OR_EA response;
NTSTATUS status;
PTRANSACTION transaction;
ULONG eaErrorOffset = 0;
LARGE_INTEGER allocationSize;
PVOID securityDescriptorBuffer;
ULONG sdLength;
ULONG eaLength;
PVOID eaBuffer;
UNICODE_STRING fileName;
PUCHAR name;
USHORT nameLength;
BOOLEAN isUnicode;
SECURITY_QUALITY_OF_SERVICE qualityOfService;
PAGED_CODE( );
transaction = WorkContext->Parameters.Transaction;
request = (PREQ_CREATE_WITH_SD_OR_EA)transaction->InParameters;
response = (PRESP_CREATE_WITH_SD_OR_EA)transaction->OutParameters;
//
// Verify that enough parameter bytes were sent and that we're allowed
// to return enough parameter bytes.
//
if ( (transaction->ParameterCount < sizeof(REQ_CREATE_WITH_SD_OR_EA)) ||
(transaction->MaxParameterCount < sizeof(RESP_CREATE_WITH_SD_OR_EA)) ) {
//
// Not enough parameter bytes were sent.
//
IF_DEBUG(SMB_ERRORS)
KdPrint(( "SrvSmbCreateWithSdOrEa: bad parameter byte counts: %ld %ld\n",
transaction->ParameterCount,
transaction->MaxParameterCount ));
SrvLogInvalidSmb( WorkContext );
return GenerateCreateWithSdOrEaResponse(
WorkContext,
STATUS_INVALID_SMB
);
}
eaErrorOffset = 0;
allocationSize.HighPart = SmbGetUlong( &request->AllocationSize.HighPart );
allocationSize.LowPart = SmbGetUlong( &request->AllocationSize.LowPart );
//
// First verify that the file path name doesnot extend beyond the
// end of the SMB.
//
isUnicode = SMB_IS_UNICODE( WorkContext );
name = (PUCHAR)request->Buffer;
if ( isUnicode ) {
name = ALIGN_SMB_WSTR( name );
}
nameLength = (USHORT)SmbGetUshort( &request->NameLength );
if ( name + nameLength > ((PCHAR)request + transaction->ParameterCount) ) {
IF_DEBUG(SMB_ERRORS) {
KdPrint(( "SrvSmbCreateWithSdOrEa: failed at line %u\n", __LINE__ ));
}
SrvLogInvalidSmb( WorkContext );
return GenerateCreateWithSdOrEaResponse(
WorkContext,
STATUS_INVALID_SMB
);
}
//
// Convert the file name to a Unicode string.
//
status = SrvMakeUnicodeString(
isUnicode,
&fileName,
name,
&nameLength
);
if ( !NT_SUCCESS( status ) ) {
return GenerateCreateWithSdOrEaResponse( WorkContext, status );
}
sdLength = SmbGetUlong( &request->SecurityDescriptorLength );
eaLength = SmbGetUlong( &request->EaLength );
securityDescriptorBuffer = transaction->InData;
eaBuffer = (PCHAR)securityDescriptorBuffer + ((sdLength + 3) & ~ 3);
if( eaLength > transaction->DataCount ||
sdLength > transaction->DataCount ||
(PCHAR)securityDescriptorBuffer + sdLength > (PCHAR)transaction->InData + transaction->DataCount ||
(PCHAR)eaBuffer + eaLength > (PCHAR)transaction->InData + transaction->DataCount ||
((sdLength != 0) && !RtlValidRelativeSecurityDescriptor(securityDescriptorBuffer, sdLength, 0))) {
IF_DEBUG( SMB_ERRORS ) {
KdPrint(( "SrvSmbCreateWithSdOrEa: failed at line %u\n", __LINE__ ));
KdPrint(( " eaLength %u, sdLength %u, DataCount %u\n",
eaLength, sdLength, transaction->DataCount ));
}
SrvLogInvalidSmb( WorkContext );
if ( !isUnicode ) {
RtlFreeUnicodeString( &fileName );
}
return GenerateCreateWithSdOrEaResponse(
WorkContext,
STATUS_INVALID_SECURITY_DESCR
);
}
//
// *** We always ask for STATIC tracking, not DYNAMIC, because we
// don't support dynamic tracking over the net yet.
//
// !!! Note that once we support dynamic tracking, we MUST CHANGE
// THE NAMED PIPE PROCESSING to not do writes/transceives at DPC
// level, because the NPFS needs to call SeCreateClientSecurity
// on every write when dynamic tracking is selected!
//
qualityOfService.Length = sizeof( qualityOfService );
qualityOfService.ImpersonationLevel =
SmbGetUlong( &request->ImpersonationLevel );
qualityOfService.ContextTrackingMode = FALSE;
//qualityOfService.ContextTrackingMode = (BOOLEAN)
// (request->SecurityFlags & SMB_SECURITY_DYNAMIC_TRACKING);
qualityOfService.EffectiveOnly = (BOOLEAN)
(request->SecurityFlags & SMB_SECURITY_EFFECTIVE_ONLY);
status = SrvNtCreateFile(
WorkContext,
SmbGetUlong( &request->RootDirectoryFid ),
SmbGetUlong( &request->DesiredAccess ),
allocationSize,
SmbGetUlong( &request->FileAttributes ),
SmbGetUlong( &request->ShareAccess ),
SmbGetUlong( &request->CreateDisposition ),
SmbGetUlong( &request->CreateOptions ),
(sdLength == 0) ? NULL : securityDescriptorBuffer,
&fileName,
(eaLength == 0) ? NULL : eaBuffer,
eaLength,
&eaErrorOffset,
SmbGetUlong( &request->Flags ),
&qualityOfService,
(request->Flags & NT_CREATE_REQUEST_OPBATCH) != 0 ?
OplockTypeBatch :
(request->Flags & NT_CREATE_REQUEST_OPLOCK) != 0 ?
OplockTypeExclusive : OplockTypeServerBatch,
RestartCreateWithSdOrEa
);
//
// Free the unicode file name buffer if it has been allocated.
//
if ( !isUnicode ) {
RtlFreeUnicodeString( &fileName );
}
if ( status == STATUS_OPLOCK_BREAK_IN_PROGRESS ) {
//
// The open is blocked (waiting for a comm device or an oplock
// break), do not send a reply.
//
//
// Save the ea error offset
//
WorkContext->Parameters2.Open.EaErrorOffset = eaErrorOffset;
return SmbTransStatusInProgress;
} else if ( WorkContext->Parameters2.Open.TemporaryOpen ) {
//
// The initial open failed due to a sharing violation, possibly
// caused by an batch oplock. Requeue the open to a blocking
// thread.
//
WorkContext->FspRestartRoutine = (PRESTART_ROUTINE)ExecuteTransaction;
SrvQueueWorkToBlockingThread( WorkContext );
return SmbStatusInProgress;
} else {
//
// Save the ea error offset
//
WorkContext->Parameters2.Open.EaErrorOffset = eaErrorOffset;
//
// The open has completed. Generate and send the reply.
//
return GenerateCreateWithSdOrEaResponse( WorkContext, status );
}
} // SrvSmbCreateWithSdOrEa
VOID SRVFASTCALL
RestartCreateWithSdOrEa (
PWORK_CONTEXT WorkContext
)
/*++
Routine Description:
Completes processing of an Open2 SMB.
Arguments:
WorkContext - Work context block for the operation.
Return Value:
None.
--*/
{
SMB_TRANS_STATUS smbStatus;
NTSTATUS openStatus;
PAGED_CODE( );
openStatus = SrvCheckOplockWaitState( WorkContext->WaitForOplockBreak );
if ( NT_SUCCESS( openStatus ) ) {
openStatus = WorkContext->Irp->IoStatus.Status;
if( NT_SUCCESS( openStatus ) ) {
//
// It's obvious that the file already existed, because we've
// been working on an oplock break. So set the
// IoStatus.Information field correctly.
//
WorkContext->Irp->IoStatus.Information = FILE_OPENED;
}
} else {
//
// This open was waiting for an oplock break to occur, but
// timed out. Close our handle to this file, then fail the open.
//
SrvCloseRfcb( WorkContext->Parameters2.Open.Rfcb );
}
WorkContext->Irp->IoStatus.Information = WorkContext->Parameters2.Open.IosbInformation;
smbStatus = GenerateCreateWithSdOrEaResponse( WorkContext, openStatus );
SrvCompleteExecuteTransaction( WorkContext, smbStatus );
return;
} // RestartCreateWithSdOrEa
SMB_TRANS_STATUS
GenerateCreateWithSdOrEaResponse (
PWORK_CONTEXT WorkContext,
NTSTATUS OpenStatus
)
/*++
Routine Description:
Generates a response to an Create With SD or EA SMB and setup for furthur
SMB processing.
Arguments:
WorkContext - Work context block for the operation.
OpenStatus - The status of the open operation.
Return Value:
None.
--*/
{
PREQ_CREATE_WITH_SD_OR_EA request;
PRESP_CREATE_WITH_SD_OR_EA response;
PRFCB rfcb;
NTSTATUS status;
SRV_NT_FILE_INFORMATION srvNtFileInformation;
PTRANSACTION transaction;
OPLOCK_TYPE oplockType;
UCHAR oplockLevel;
BOOLEAN allowLevelII;
BOOLEAN SendExtendedResponse = FALSE;
ACCESS_MASK MaximalAccessRights;
ACCESS_MASK GuestMaximalAccessRights;
ULONG eaErrorOffset;
BOOLEAN extendedRequested;
ULONG CreateAction = (ULONG)WorkContext->Irp->IoStatus.Information;
PAGED_CODE( );
transaction = WorkContext->Parameters.Transaction;
request = (PREQ_CREATE_WITH_SD_OR_EA)transaction->InParameters;
response = (PRESP_CREATE_WITH_SD_OR_EA)transaction->OutParameters;
extendedRequested = ((request->Flags & NT_CREATE_REQUEST_EXTENDED_RESPONSE) != 0 );
rfcb = WorkContext->Rfcb;
eaErrorOffset = WorkContext->Parameters2.Open.EaErrorOffset;
//
// If the open failed, send an error response.
//
if ( !NT_SUCCESS( OpenStatus ) ) {
SrvSetSmbError2( WorkContext, OpenStatus, TRUE );
//
// Remap the error if it is ERROR_ALREADY_EXISTS
//
if ( !CLIENT_CAPABLE_OF(NT_STATUS,WorkContext->Connection) &&
SmbGetUshort( &WorkContext->ResponseHeader->Error ) ==
ERROR_ALREADY_EXISTS ) {
SmbPutUshort(
&WorkContext->ResponseHeader->Error,
ERROR_FILE_EXISTS
);
}
goto err_exit;
}
//
// We always open with at least FILE_READ_ATTRIBUTES, so no
// access check is needed.
//
status = SrvQueryNtInformationFile(
rfcb->Lfcb->FileHandle,
rfcb->Lfcb->FileObject,
rfcb->ShareType,
extendedRequested,
&srvNtFileInformation
);
if ( !NT_SUCCESS(status) ) {
IF_DEBUG(ERRORS) {
KdPrint(( "GenerateCreateWithSdOrEaResponse: "
"SrvQueryNtInformationFile failed: %X\n", status ));
}
SrvCloseRfcb( rfcb );
SrvSetSmbError2( WorkContext, status, TRUE );
goto err_exit;
}
//
// Attempt to acquire the oplock.
//
if ( !(request->CreateOptions & FILE_DIRECTORY_FILE) ) {
if ( request->Flags & NT_CREATE_REQUEST_OPLOCK ) {
allowLevelII = CLIENT_CAPABLE_OF( LEVEL_II_OPLOCKS, WorkContext->Connection );
if ( request->Flags & NT_CREATE_REQUEST_OPBATCH ) {
oplockType = OplockTypeBatch;
oplockLevel = SMB_OPLOCK_LEVEL_BATCH;
} else {
oplockType = OplockTypeExclusive;
oplockLevel = SMB_OPLOCK_LEVEL_EXCLUSIVE;
}
} else {
allowLevelII = FALSE;
oplockType = OplockTypeServerBatch;
oplockLevel = SMB_OPLOCK_LEVEL_NONE;
}
if ( SrvRequestOplock( WorkContext, &oplockType, allowLevelII ) ) {
//
// The oplock was granted. Check to see if it was a level 2.
//
if ( oplockType == OplockTypeShareRead ) {
oplockLevel = SMB_OPLOCK_LEVEL_II;
}
INCREMENT_DEBUG_STAT( SrvDbgStatistics.TotalOplocksGranted );
} else {
//
// The oplock request was denied.
//
oplockLevel = SMB_OPLOCK_LEVEL_NONE;
INCREMENT_DEBUG_STAT( SrvDbgStatistics.TotalOplocksDenied );
}
} else {
oplockLevel = SMB_OPLOCK_LEVEL_NONE;
}
if ( extendedRequested ) {
NTSTATUS ExtendedResponseStatus;
PRESP_EXTENDED_CREATE_WITH_SD_OR_EA ExtendedResponse;
ExtendedResponse = (PRESP_EXTENDED_CREATE_WITH_SD_OR_EA)response;
ExtendedResponseStatus = SrvUpdateMaximalAccessRightsInResponse(
WorkContext,
&ExtendedResponse->MaximalAccessRights,
&ExtendedResponse->GuestMaximalAccessRights);
SendExtendedResponse = (ExtendedResponseStatus == STATUS_SUCCESS);
}
//
// Set up response SMB.
//
response->OplockLevel = oplockLevel;
if (SendExtendedResponse) {
response->ExtendedResponse = 1;
} else {
response->ExtendedResponse = 0;
}
SmbPutUshort( &response->Fid, rfcb->Fid );
SmbPutUlong( &response->EaErrorOffset, eaErrorOffset );
SmbPutUlong( &response->CreateAction, CreateAction );
SmbPutUshort( &response->FileType, srvNtFileInformation.Type );
SmbPutUshort( &response->DeviceState, srvNtFileInformation.HandleState );
SmbPutUlong(
&response->CreationTime.HighPart,
srvNtFileInformation.NwOpenInfo.CreationTime.HighPart
);
SmbPutUlong(
&response->CreationTime.LowPart,
srvNtFileInformation.NwOpenInfo.CreationTime.LowPart
);
SmbPutUlong(
&response->LastAccessTime.HighPart,
srvNtFileInformation.NwOpenInfo.LastAccessTime.HighPart
);
SmbPutUlong(
&response->LastAccessTime.LowPart,
srvNtFileInformation.NwOpenInfo.LastAccessTime.LowPart
);
SmbPutUlong(
&response->LastWriteTime.HighPart,
srvNtFileInformation.NwOpenInfo.LastWriteTime.HighPart
);
SmbPutUlong(
&response->LastWriteTime.LowPart,
srvNtFileInformation.NwOpenInfo.LastWriteTime.LowPart
);
SmbPutUlong(
&response->ChangeTime.HighPart,
srvNtFileInformation.NwOpenInfo.ChangeTime.HighPart
);
SmbPutUlong(
&response->ChangeTime.LowPart,
srvNtFileInformation.NwOpenInfo.ChangeTime.LowPart
);
SmbPutUlong( &response->FileAttributes, srvNtFileInformation.NwOpenInfo.FileAttributes );
SmbPutUlong(
&response->AllocationSize.HighPart,
srvNtFileInformation.NwOpenInfo.AllocationSize.HighPart
);
SmbPutUlong(
&response->AllocationSize.LowPart,
srvNtFileInformation.NwOpenInfo.AllocationSize.LowPart
);
SmbPutUlong(
&response->EndOfFile.HighPart,
srvNtFileInformation.NwOpenInfo.EndOfFile.HighPart
);
SmbPutUlong(
&response->EndOfFile.LowPart,
srvNtFileInformation.NwOpenInfo.EndOfFile.LowPart
);
response->Directory = (srvNtFileInformation.NwOpenInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? TRUE : FALSE;
if (SendExtendedResponse) {
transaction->ParameterCount = sizeof(RESP_EXTENDED_CREATE_WITH_SD_OR_EA);
} else {
transaction->ParameterCount = sizeof(RESP_CREATE_WITH_SD_OR_EA);
}
transaction->SetupCount = 0;
transaction->DataCount = 0;
IF_DEBUG(TRACE2) KdPrint(( "SrvSmbOpen2 complete.\n" ));
return SmbTransStatusSuccess;
err_exit:
RtlZeroMemory( (PVOID)response, sizeof(RESP_CREATE_WITH_SD_OR_EA) );
SmbPutUlong( &response->EaErrorOffset, eaErrorOffset );
transaction->SetupCount = 0;
transaction->ParameterCount = sizeof(RESP_CREATE_WITH_SD_OR_EA);
transaction->DataCount = 0;
return SmbTransStatusErrorWithData;
} // GenerateCreateWithSdOrEaResponse
SMB_PROCESSOR_RETURN_TYPE
SrvSmbCreate (
SMB_PROCESSOR_PARAMETERS
)
/*++
Routine Description:
Processes the Create and Create New SMBs.
Arguments:
SMB_PROCESSOR_PARAMETERS - See smbprocs.h for a description
of the parameters to SMB processor routines.
Return Value:
SMB_PROCESSOR_RETURN_TYPE - See smbprocs.h
--*/
{
PREQ_CREATE request;
UCHAR command;
NTSTATUS status = STATUS_SUCCESS;
SMB_STATUS SmbStatus = SmbStatusInProgress;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_CREATE;
SrvWmiStartContext(WorkContext);
IF_SMB_DEBUG(OPEN_CLOSE1) {
KdPrint(( "Create file request header at 0x%p, response header at 0x%p\n",
WorkContext->RequestHeader,
WorkContext->ResponseHeader ));
KdPrint(( "Create file request parameters at 0x%p, response parameters at 0x%p\n",
WorkContext->RequestParameters,
WorkContext->ResponseParameters ));
}
request = (PREQ_CREATE)WorkContext->RequestParameters;
command = WorkContext->RequestHeader->Command;
//
// Open the file in compatibility mode, obtaining read/write access
// for this FID.
//
status = SrvCreateFile(
WorkContext,
SMB_DA_SHARE_COMPATIBILITY | SMB_DA_ACCESS_READ_WRITE,
SmbGetUshort( &request->FileAttributes ),
(USHORT) ( ( command == SMB_COM_CREATE ?
SMB_OFUN_OPEN_TRUNCATE : SMB_OFUN_OPEN_FAIL )
| SMB_OFUN_CREATE_CREATE ),
0, // SmbAllocationSize
(PCHAR)(request->Buffer + 1),
END_OF_REQUEST_SMB( WorkContext ),
NULL,
0L,
NULL,
(WorkContext->RequestHeader->Flags & SMB_FLAGS_OPLOCK_NOTIFY_ANY) != 0 ?
OplockTypeBatch :
(WorkContext->RequestHeader->Flags & SMB_FLAGS_OPLOCK) != 0 ?
OplockTypeExclusive : OplockTypeServerBatch,
RestartSmbCreate
);
if( status == STATUS_OPLOCK_BREAK_IN_PROGRESS ) {
//
// The open is blocked, perhaps because some other client had this
// file open and is holding onto the handle with a batch oplock.
//
SmbStatus = SmbStatusInProgress;
} else {
SmbStatus = GenerateCreateResponse( WorkContext, status );
}
SrvWmiEndContext(WorkContext);
return SmbStatus;
}
VOID SRVFASTCALL
RestartSmbCreate(
IN PWORK_CONTEXT WorkContext
)
/*++
Routine Description:
Completes processing of a Create SMB.
Arguments:
WorkContext - A pointer to the work context block for this SMB.
Return Value:
None.
--*/
{
SMB_PROCESSOR_RETURN_LOCAL smbStatus = SmbStatusInProgress;
NTSTATUS createStatus = STATUS_SUCCESS;
PAGED_CODE();
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_CREATE;
SrvWmiStartContext(WorkContext);
createStatus = SrvCheckOplockWaitState( WorkContext->WaitForOplockBreak );
if( NT_SUCCESS( createStatus ) ) {
createStatus = WorkContext->Irp->IoStatus.Status;
} else {
//
// The create was waiting for an oplock break to occur, but
// timed out. Close our handle to this file, then fail the create.
//
SrvCloseRfcb( WorkContext->Parameters2.Open.Rfcb );
}
WorkContext->Irp->IoStatus.Information = WorkContext->Parameters2.Open.IosbInformation;
smbStatus = GenerateCreateResponse( WorkContext, createStatus );
SrvEndSmbProcessing( WorkContext, smbStatus );
SrvWmiEndContext(WorkContext);
}
SMB_PROCESSOR_RETURN_TYPE
GenerateCreateResponse(
PWORK_CONTEXT WorkContext,
NTSTATUS CreateStatus
)
/*++
Routine Description:
Generates a response to a Create SMB
Arguments:
WorkContext -
Status - The status of the create operation
Return Value:
The status of the SMB processing.
--*/
{
PREQ_CREATE request;
PRESP_CREATE response;
PRFCB rfcb;
PAGED_CODE();
request = (PREQ_CREATE)WorkContext->RequestParameters;
response = (PRESP_CREATE)WorkContext->ResponseParameters;
//
// If the open failed, send an error response.
//
if ( !NT_SUCCESS(CreateStatus) ) {
SrvSetSmbError( WorkContext, CreateStatus );
//
// Remap the error if it is ERROR_ALREADY_EXISTS. In OS/2
// ERROR_ALREADY_EXISTS is used for resources like Semaphores.
// This cannot be passed back to the downlevel client and has
// to be remapped to ERROR_FILE_EXISTS
//
if ( !CLIENT_CAPABLE_OF(NT_STATUS,WorkContext->Connection) &&
SmbGetUshort( &WorkContext->ResponseHeader->Error ) ==
ERROR_ALREADY_EXISTS ) {
SmbPutUshort(
&WorkContext->ResponseHeader->Error,
ERROR_FILE_EXISTS
);
}
return SmbStatusSendResponse;
}
//
// Set the time on the file.
//
// !!! Should we do anything with the return code?
rfcb = WorkContext->Rfcb;
(VOID)SrvSetLastWriteTime(
rfcb,
SmbGetUlong( &request->CreationTimeInSeconds ),
rfcb->Lfcb->GrantedAccess
);
//
// Give the smart card a chance to get into the act
//
if( WorkContext->Endpoint->IsConnectionless && SrvIpxSmartCard.Open != NULL ) {
PVOID handle;
IF_DEBUG( SIPX ) {
KdPrint(( "Trying the smart card for %wZ\n", &rfcb->Mfcb->FileName ));
}
if( SrvIpxSmartCard.Open(
WorkContext->RequestBuffer->Buffer,
rfcb->Lfcb->FileObject,
&rfcb->Mfcb->FileName,
&(WorkContext->ClientAddress->IpxAddress.Address[0].Address[0]),
rfcb->Lfcb->FileObject->Flags & FO_CACHE_SUPPORTED,
&handle
) == TRUE ) {
IF_DEBUG( SIPX ) {
KdPrint(( "%wZ handled by Smart Card. Handle %p\n",
&rfcb->Mfcb->FileName, handle ));
}
rfcb->PagedRfcb->IpxSmartCardContext = handle;
}
}
//
// Set up response SMB.
//
response->WordCount = 1;
SmbPutUshort( &response->Fid, rfcb->Fid );
SmbPutUshort( &response->ByteCount, 0 );
WorkContext->ResponseParameters = NEXT_LOCATION(
response,
RESP_CREATE,
0
);
IF_DEBUG(TRACE2) KdPrint(( "SrvSmbCreate complete.\n" ));
return SmbStatusSendResponse;
} // SrvSmbCreate
SMB_PROCESSOR_RETURN_TYPE
SrvSmbCreateTemporary (
SMB_PROCESSOR_PARAMETERS
)
/*++
Routine Description:
Processes a Create Temporary SMB.
Arguments:
SMB_PROCESSOR_PARAMETERS - See smbprocs.h for a description
of the parameters to SMB processor routines.
Return Value:
SMB_PROCESSOR_RETURN_TYPE - See smbprocs.h
--*/
{
PREQ_CREATE_TEMPORARY request;
PRESP_CREATE_TEMPORARY response;
PRFCB rfcb;
NTSTATUS status = STATUS_OBJECT_NAME_COLLISION;
SMB_STATUS SmbStatus = SmbStatusInProgress;
CLONG nameCounter;
USHORT i;
PSZ nameStart, ep;
CHAR name[9];
LARGE_INTEGER time;
PAGED_CODE( );
if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
WorkContext->PreviousSMB = EVENT_TYPE_SMB_CREATE_TEMPORARY;
SrvWmiStartContext(WorkContext);
IF_SMB_DEBUG(OPEN_CLOSE1) {
KdPrint(( "Create temporary file request header at 0x%p, response header at 0x%p\n",
WorkContext->RequestHeader,
WorkContext->ResponseHeader ));
KdPrint(( "Create temporary file request parameters at 0x%p, response parameters at 0x%p\n",
WorkContext->RequestParameters,
WorkContext->ResponseParameters ));
}
request = (PREQ_CREATE_TEMPORARY)WorkContext->RequestParameters;
response = (PRESP_CREATE_TEMPORARY)WorkContext->ResponseParameters;
//
// Find out where in the buffer the directory pathname ends. We will
// write the filename after this.
//
ep = END_OF_REQUEST_SMB( WorkContext );
for( nameStart = (PSZ)request->Buffer; nameStart <= ep && *nameStart; nameStart++ ) {
;
}
//
// If we didn't find a NULL, or we don't have room to add in the last part of the
// temporary filename, then we give up
//
if( nameStart > ep ||
*nameStart ||
WorkContext->RequestBuffer->BufferLength - WorkContext->RequestBuffer->DataLength < 9 ) {
//
// We did not find a valid pathname!
//
SrvSetSmbError( WorkContext, STATUS_INVALID_SMB );
status = STATUS_INVALID_SMB;
SmbStatus = SmbStatusSendResponse;
goto Cleanup;
}
//
// The temporary file will be created with a name like SRVxxxxx, where
// xxxxx is a hex integer. We first try to create SRV00000, and if it
// exists increment xxxxx until xxxxx = 0xFFFFF;
//
// !!! We may want to maintain a "last name" counter, to try to
// reduce the number of retries we need. We may also want to
// have an explicit bound the number of tries, like 16 or 32, or
// 293.
//
name[0] = 'S';
name[1] = 'R';
name[2] = 'V';
name[8] = '\0';
// *** for SrvCanonicalizePathName
WorkContext->RequestBuffer->DataLength += 9;
// Because of the possibility of security attacks, we limit the number of times we will
// retry the create. Thus, we pick a semi-random starting range and try the next
// MAX_TEMP_OPEN_RETRIES in that range. The semi-random starting value we pick is the
// system time in ~.2 second values. This should give enough variation across calls to
// prevent a lot of overlap, but sufficiently protect us from DoS attacks
KeQuerySystemTime( &time );
time.QuadPart >>= 20;
for ( nameCounter = 0;
status == STATUS_OBJECT_NAME_COLLISION &&
nameCounter < MAX_TEMP_OPEN_RETRIES;
nameCounter++ ) {
CCHAR j;
PSZ s;
CLONG actualNameCounter = nameCounter + time.LowPart;
name[3] = SrvHexChars[ (actualNameCounter & (CLONG)0xF0000) >> 16 ];
name[4] = SrvHexChars[ (actualNameCounter & (CLONG)0xF000) >> 12 ];
name[5] = SrvHexChars[ (actualNameCounter & (CLONG)0xF00) >> 8 ];
name[6] = SrvHexChars[ (actualNameCounter & (CLONG)0xF0) >> 4 ];
name[7] = SrvHexChars[ (actualNameCounter & (CLONG)0xF) ];
// *** We could get rid of this loop and the name[9] variable
// if we could put the name directly into the SMB buffer.
for ( j = 0, s = nameStart; j < 9; j++, s++ ) {
*s = name[j];
}
//
// Open the file in compatibility mode, obtaining read/write
// access for this FID.
//
status = SrvCreateFile(
WorkContext,
SMB_DA_SHARE_COMPATIBILITY | SMB_DA_ACCESS_READ_WRITE,
0, // SmbFileAttributes (normal)
SMB_OFUN_OPEN_FAIL | SMB_OFUN_CREATE_CREATE,
0, // SmbAllocationSize
(PCHAR)(request->Buffer + 1),
END_OF_REQUEST_SMB( WorkContext ),
NULL,
0L,
NULL,
(WorkContext->RequestHeader->Flags & SMB_FLAGS_OPLOCK_NOTIFY_ANY) != 0 ?
OplockTypeBatch :
(WorkContext->RequestHeader->Flags & SMB_FLAGS_OPLOCK) != 0 ?
OplockTypeExclusive : OplockTypeServerBatch,
NULL
);
ASSERT ( status != STATUS_OPLOCK_BREAK_IN_PROGRESS );
//
// If the open failed, send an error response.
//
if ( !NT_SUCCESS(status) && status != STATUS_OBJECT_NAME_COLLISION ) {
SrvSetSmbError( WorkContext, status );
SmbStatus = SmbStatusSendResponse;
goto Cleanup;
}
}
if ( nameCounter == MAX_TEMP_OPEN_RETRIES ) {
//
// This is either a DoS attack, or the caller is simply out of luck. Since
// we can't tell the difference, we fail with an error.
//
SmbStatus = SmbStatusSendResponse;
goto Cleanup;
}
//
// Set up response SMB.
//
rfcb = WorkContext->Rfcb;
rfcb->IsCacheable = FALSE;
response->WordCount = 1;
SmbPutUshort( &response->Fid, rfcb->Fid );
for ( i = 0; i < 9; i++ ) {
response->Buffer[i] = nameStart[i];
}
SmbPutUshort( &response->ByteCount, 9 );
WorkContext->ResponseParameters = NEXT_LOCATION(
response,
RESP_CREATE_TEMPORARY,
9
);
SmbStatus = SmbStatusSendResponse;
IF_DEBUG(TRACE2) KdPrint(( "SrvSmbCreateTemporary complete.\n" ));
Cleanup:
SrvWmiEndContext(WorkContext);
return SmbStatus;
} // SrvSmbCreateTemporary
VOID
SetEofToMatchAllocation (
IN HANDLE FileHandle,
IN ULONG AllocationSize
)
/*++
Routine Description:
Sets the EOF location for a file to match the size allocated when
the file was created. This routine is necessary in order to gain
compatibility with OS/2, which does not have separate concepts of
EOF and allocation size. When the server creates a file for an OS/2
client, if the allocation size is greater than 0, the server sets
the EOF to match that size.
This routine was created to allow the server to pass variations 17
and 18 of the filio003 test.
Arguments:
SMB_PROCESSOR_PARAMETERS - See smbtypes.h for a description
of the parameters to SMB processor routines.
Return Value:
SMB_PROCESSOR_RETURN_TYPE - See smbtypes.h
--*/
{
NTSTATUS status;
IO_STATUS_BLOCK iosb;
FILE_END_OF_FILE_INFORMATION newEndOfFile;
PAGED_CODE( );
//
// Don't bother doing this if the allocated size is zero.
//
if ( AllocationSize != 0 ) {
newEndOfFile.EndOfFile.QuadPart = AllocationSize;
status = NtSetInformationFile(
FileHandle,
&iosb,
&newEndOfFile,
sizeof( newEndOfFile ),
FileEndOfFileInformation
);
if ( !NT_SUCCESS(status) ) {
INTERNAL_ERROR(
ERROR_LEVEL_EXPECTED,
"SetEofToMatchAllocation: SetInformationFile returned %X",
status,
NULL
);
SrvLogServiceFailure( SRV_SVC_NT_SET_INFO_FILE, status );
}
}
return;
} // SetEofToMatchAllocation