static NTSTATUS FspFsvolQuerySecurity(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
/* is this a valid FileObject? */
if (!FspFileNodeIsValid(IrpSp->FileObject->FsContext))
return STATUS_INVALID_DEVICE_REQUEST;
NTSTATUS Result;
PFILE_OBJECT FileObject = IrpSp->FileObject;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
FSP_FILE_DESC *FileDesc = FileObject->FsContext2;
SECURITY_INFORMATION SecurityInformation = IrpSp->Parameters.QuerySecurity.SecurityInformation;
PVOID Buffer = Irp->UserBuffer;
ULONG Length = IrpSp->Parameters.QuerySecurity.Length;
PVOID SecurityBuffer;
FSP_FSCTL_TRANSACT_REQ *Request;
ASSERT(FileNode == FileDesc->FileNode);
FspFileNodeAcquireShared(FileNode, Main);
if (FspFileNodeReferenceSecurity(FileNode, &SecurityBuffer, 0))
{
FspFileNodeRelease(FileNode, Main);
Result = FspQuerySecurityDescriptorInfo(SecurityInformation, Buffer, &Length, SecurityBuffer);
FspFileNodeDereferenceSecurity(SecurityBuffer);
Irp->IoStatus.Information = Length;
return Result;
}
FspFileNodeAcquireShared(FileNode, Pgio);
Result = FspBufferUserBuffer(Irp, Length, IoWriteAccess);
if (!NT_SUCCESS(Result))
{
FspFileNodeRelease(FileNode, Full);
return Result;
}
Result = FspIopCreateRequestEx(Irp, 0, 0, FspFsvolQuerySecurityRequestFini, &Request);
if (!NT_SUCCESS(Result))
{
FspFileNodeRelease(FileNode, Full);
return Result;
}
Request->Kind = FspFsctlTransactQuerySecurityKind;
Request->Req.QuerySecurity.UserContext = FileNode->UserContext;
Request->Req.QuerySecurity.UserContext2 = FileDesc->UserContext2;
FspFileNodeSetOwner(FileNode, Full, Request);
FspIopRequestContext(Request, RequestFileNode) = FileNode;
return FSP_STATUS_IOQ_POST;
}
static NTSTATUS FspFsvolSetSecurity(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
/* is this a valid FileObject? */
if (!FspFileNodeIsValid(IrpSp->FileObject->FsContext))
return STATUS_INVALID_DEVICE_REQUEST;
NTSTATUS Result;
PFILE_OBJECT FileObject = IrpSp->FileObject;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
FSP_FILE_DESC *FileDesc = FileObject->FsContext2;
SECURITY_INFORMATION SecurityInformation = IrpSp->Parameters.SetSecurity.SecurityInformation;
PSECURITY_DESCRIPTOR SecurityDescriptor = IrpSp->Parameters.SetSecurity.SecurityDescriptor;
ULONG SecurityDescriptorSize = 0;
ASSERT(FileNode == FileDesc->FileNode);
#if 0
/* captured security descriptor is always valid */
if (0 == SecurityDescriptor || !RtlValidSecurityDescriptor(SecurityDescriptor))
return STATUS_INVALID_PARAMETER;
#endif
SecurityDescriptorSize = RtlLengthSecurityDescriptor(SecurityDescriptor);
FspFileNodeAcquireExclusive(FileNode, Full);
FSP_FSCTL_TRANSACT_REQ *Request;
Result = FspIopCreateRequestEx(Irp, 0, SecurityDescriptorSize, FspFsvolSetSecurityRequestFini,
&Request);
if (!NT_SUCCESS(Result))
{
FspFileNodeRelease(FileNode, Full);
return Result;
}
Request->Kind = FspFsctlTransactSetSecurityKind;
Request->Req.SetSecurity.UserContext = FileNode->UserContext;
Request->Req.SetSecurity.UserContext2 = FileDesc->UserContext2;
Request->Req.SetSecurity.SecurityInformation = SecurityInformation;
Request->Req.SetSecurity.SecurityDescriptor.Offset = 0;
Request->Req.SetSecurity.SecurityDescriptor.Size = (UINT16)SecurityDescriptorSize;
RtlCopyMemory(Request->Buffer, SecurityDescriptor, SecurityDescriptorSize);
FspFileNodeSetOwner(FileNode, Full, Request);
FspIopRequestContext(Request, RequestFileNode) = FileNode;
return FSP_STATUS_IOQ_POST;
}
static NTSTATUS FspFsvolWrite(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
/* is this a valid FileObject? */
if (!FspFileNodeIsValid(IrpSp->FileObject->FsContext))
return STATUS_INVALID_DEVICE_REQUEST;
NTSTATUS Result;
PFILE_OBJECT FileObject = IrpSp->FileObject;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
/* is this an MDL complete request? */
if (FlagOn(IrpSp->MinorFunction, IRP_MN_COMPLETE))
{
Result = FspCcMdlWriteComplete(FileObject,
&IrpSp->Parameters.Write.ByteOffset, Irp->MdlAddress);
Irp->MdlAddress = 0;
return Result;
}
/* only regular files can be written */
if (FileNode->IsDirectory)
return STATUS_INVALID_PARAMETER;
/* do we have anything to write? */
if (0 == IrpSp->Parameters.Write.Length)
{
Irp->IoStatus.Information = 0;
return STATUS_SUCCESS;
}
/* are we doing cached or non-cached I/O? */
if (FlagOn(FileObject->Flags, FO_CACHE_SUPPORTED) &&
!FlagOn(Irp->Flags, IRP_PAGING_IO | IRP_NOCACHE))
Result = FspFsvolWriteCached(FsvolDeviceObject, Irp, IrpSp, IoIsOperationSynchronous(Irp));
else
Result = FspFsvolWriteNonCached(FsvolDeviceObject, Irp, IrpSp, IoIsOperationSynchronous(Irp));
return Result;
}
static NTSTATUS FspFsvolLockControl(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
/* is this a valid FileObject? */
if (!FspFileNodeIsValid(IrpSp->FileObject->FsContext))
return STATUS_INVALID_DEVICE_REQUEST;
NTSTATUS Result;
PFILE_OBJECT FileObject = IrpSp->FileObject;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
/* only regular files can be locked */
if (FileNode->IsDirectory)
return STATUS_INVALID_PARAMETER;
Result = FspFsvolLockControlRetry(FsvolDeviceObject, Irp, IrpSp, IoIsOperationSynchronous(Irp));
return Result;
}
