bug fix about ISOfilesystem and sceIo

Core/FileSystems/ISOFileSystem.cpp

@@ -368,6 +368,11 @@ u32 ISOFileSystem::OpenFile(std::string filename, FileAccess access)
 		entry.isRawSector = true;
 		entry.sectorStart = sectorStart;
 		entry.openSize = readSize;
+		// when open as "umd1:/sce_lbn0x0_size0x6B49D200", that mean open umd1 as a block device.
+		// the param in sceIoLseek and sceIoRead is lba mode. we must mark it.
+		if(sectorStart==0 && readSize>=blockDevice->GetNumBlocks()*2048)
+			entry.file = &entireISO;
+
 		entries[newHandle] = entry;
 		return newHandle;
 	}