Function Ext2QueryEa

Ext4Fsd/ea.c:93–386

}

NTSTATUS
Ext2QueryEa (
	IN PEXT2_IRP_CONTEXT    IrpContext
)
{
	PIRP                Irp = NULL;
	PIO_STACK_LOCATION  IrpSp;

	PDEVICE_OBJECT      DeviceObject;

	PEXT2_VCB           Vcb = NULL;
	PEXT2_FCB           Fcb = NULL;
	PEXT2_CCB           Ccb = NULL;
	PEXT2_MCB           Mcb = NULL;

	PUCHAR  UserEaList;
	ULONG   UserEaListLength;
	ULONG   UserEaIndex;

	BOOLEAN RestartScan;
	BOOLEAN ReturnSingleEntry;
	BOOLEAN IndexSpecified;

	BOOLEAN             MainResourceAcquired = FALSE;
	BOOLEAN             XattrRefAcquired = FALSE;

	NTSTATUS            Status = STATUS_UNSUCCESSFUL;

	struct ext4_xattr_ref xattr_ref;
	PCHAR UserBuffer;

	ULONG UserBufferLength = 0;
	ULONG RemainingUserBufferLength = 0;

	PFILE_FULL_EA_INFORMATION FullEa, LastFullEa = NULL;

	__try {

		Ccb = IrpContext->Ccb;
		ASSERT(Ccb != NULL);
		ASSERT((Ccb->Identifier.Type == EXT2CCB) &&
			(Ccb->Identifier.Size == sizeof(EXT2_CCB)));
		DeviceObject = IrpContext->DeviceObject;
		Vcb = (PEXT2_VCB)DeviceObject->DeviceExtension;
		Fcb = IrpContext->Fcb;
		Mcb = Fcb->Mcb;
		Irp = IrpContext->Irp;
		IrpSp = IoGetCurrentIrpStackLocation(Irp);

		Irp->IoStatus.Information = 0;

		//
		// Receive input parameter from caller
		//
		UserBuffer = Ext2GetUserBuffer(Irp);
		if (!UserBuffer) {
			Status = STATUS_INSUFFICIENT_RESOURCES;
			__leave;