CodeCavePro
Compound File limit size to 268434944 bytes?
I can't create a compound file more than 268434944 bytes. I got StackOverflow exception when try to do this.
SectorCollection.cs has a line
private const int MAX_SECTOR_V4_COUNT_LOCK_RANGE = 524287; //0x7FFFFF00 for Version 4
This is limited max file size to 524287*512 = 268434944 bytes.
What is wrong?
MAX_SECTOR_V4_COUNT_LOCK_RANGE variable refers to so-called Range Lock Sector, a special area inside files larger than 2 GB (situated just before 2 GB threshold). This area is reserved for concurrent file access management, so it has to be empty or something (so basically you are not supposed to store your data in 0x7FFFFF00 -> 0x7FFFFFFF), I'm not sure.
As you might have noticed I forked OpenMCDF project in Nov 2016 in order to make its NuGet package compatible with .NET Core, but I don't know much about how it works at the low-lever.
However if you provide me with some instructions on how to reproduce the issue you have reported I will try to fix it.
This sample reproduces an error (StackOverflowException)
class Program
{
static void Main(string[] args)
{
using (var file = new CompoundFile())
{
var storage = file.RootStorage.AddStorage("a");
var stream = storage.AddStream("b");
stream.Append(new byte[300 * 1024 * 1024]);
file.Save(@"bigfile.bin");
}
}
}
@ras254: This project is a old fork of the original OpenMcdf source hosted on sourceforge. I would recommend using and improving the original now, after it also moved to github a while ago: (https://github.com/ironfede/openmcdf).
