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[RXCE]

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Implement operation verification, this is notably based on FatVerifyOperationIsLegal.

CORE-11327

svn path=/trunk/; revision=74681
This commit is contained in:
Pierre Schweitzer 2017-05-27 12:34:38 +00:00
parent d2dcb75417
commit e89be79709
1 changed files with 102 additions and 1 deletions
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103
reactos/sdk/lib/drivers/rxce/rxce.c
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@ -5436,11 +5436,112 @@ RxUpdateCondition(
}
}
/*
* @implemented
*/
VOID
RxVerifyOperationIsLegal(
IN PRX_CONTEXT RxContext)
{
UNIMPLEMENTED;
PIRP Irp;
PMRX_FOBX Fobx;
BOOLEAN FlagSet;
PFILE_OBJECT FileObject;
PIO_STACK_LOCATION Stack;
PAGED_CODE();
Irp = RxContext->CurrentIrp;
Stack = RxContext->CurrentIrpSp;
FileObject = Stack->FileObject;
/* We'll only check stuff on opened files, this requires an IRP and a FO */
if (Irp == NULL || FileObject == NULL)
{
return;
}
/* Set no exception for breakpoint - remember whether is was already set */
FlagSet = BooleanFlagOn(RxContext->Flags, RX_CONTEXT_FLAG_NO_EXCEPTION_BREAKPOINT);
SetFlag(RxContext->Flags, RX_CONTEXT_FLAG_NO_EXCEPTION_BREAKPOINT);
/* If we have a CCB, perform a few checks on opened file */
Fobx = RxContext->pFobx;
if (Fobx != NULL)
{
PMRX_SRV_OPEN SrvOpen;
SrvOpen = Fobx->pSrvOpen;
if (SrvOpen != NULL)
{
UCHAR MajorFunction;
MajorFunction = RxContext->MajorFunction;
/* Only allow closing/cleanup operations on renamed files */
if (MajorFunction != IRP_MJ_CLEANUP && MajorFunction != IRP_MJ_CLOSE &&
BooleanFlagOn(SrvOpen->Flags, SRVOPEN_FLAG_FILE_RENAMED))
{
RxContext->IoStatusBlock.Status = STATUS_FILE_RENAMED;
ExRaiseStatus(STATUS_FILE_RENAMED);
}
/* Only allow closing/cleanup operations on deleted files */
if (MajorFunction != IRP_MJ_CLEANUP && MajorFunction != IRP_MJ_CLOSE &&
BooleanFlagOn(SrvOpen->Flags, SRVOPEN_FLAG_FILE_DELETED))
{
RxContext->IoStatusBlock.Status = STATUS_FILE_DELETED;
ExRaiseStatus(STATUS_FILE_DELETED);
}
}
}
/* If that's an open operation */
if (RxContext->MajorFunction == IRP_MJ_CREATE)
{
PFILE_OBJECT RelatedFileObject;
/* We won't allow an open operation relative to a file to be deleted */
RelatedFileObject = FileObject->RelatedFileObject;
if (RelatedFileObject != NULL)
{
PMRX_FCB Fcb;
Fcb = RelatedFileObject->FsContext;
if (BooleanFlagOn(Fcb->FcbState, FCB_STATE_DELETE_ON_CLOSE))
{
RxContext->IoStatusBlock.Status = STATUS_DELETE_PENDING;
ExRaiseStatus(STATUS_DELETE_PENDING);
}
}
}
/* If cleanup was completed */
if (BooleanFlagOn(FileObject->Flags, FO_CLEANUP_COMPLETE))
{
if (!BooleanFlagOn(Irp->Flags, IRP_PAGING_IO))
{
UCHAR MajorFunction;
/* We only allow a subset of operations (see FatVerifyOperationIsLegal for instance) */
MajorFunction = Stack->MajorFunction;
if (MajorFunction != IRP_MJ_CLOSE && MajorFunction != IRP_MJ_QUERY_INFORMATION &&
MajorFunction != IRP_MJ_SET_INFORMATION)
{
if ((MajorFunction != IRP_MJ_READ && MajorFunction != IRP_MJ_WRITE) ||
!BooleanFlagOn(Stack->MinorFunction, IRP_MN_COMPLETE))
{
RxContext->IoStatusBlock.Status = STATUS_FILE_CLOSED;
ExRaiseStatus(STATUS_FILE_CLOSED);
}
}
}
}
/* If flag was already set, don't clear it */
if (!FlagSet)
{
ClearFlag(RxContext->Flags, RX_CONTEXT_FLAG_NO_EXCEPTION_BREAKPOINT);
}
}
/*