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Fix issues with empty files in SaveDataFileSystemCore

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Alex Barney 2019-05-10 14:58:26 -05:00
parent 6f7de478eb
commit 25a66cf4df
2 changed files with 14 additions and 1 deletions
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7
src/LibHac/IO/Save/AllocationTableStorage.cs
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@ -1,4 +1,5 @@
using System; using System;
using System.IO;
namespace LibHac.IO.Save namespace LibHac.IO.Save
{ {
@ -92,6 +93,8 @@ namespace LibHac.IO.Save
if (oldBlockCount == 0) if (oldBlockCount == 0)
{ {
InitialBlock = Fat.Allocate(newBlockCount); InitialBlock = Fat.Allocate(newBlockCount);
if (InitialBlock == -1) throw new IOException("Not enough space to resize file.");
_length = newBlockCount * BlockSize; _length = newBlockCount * BlockSize;
return; return;
@ -101,7 +104,7 @@ namespace LibHac.IO.Save
{ {
Fat.Free(InitialBlock); Fat.Free(InitialBlock);
InitialBlock = -1; InitialBlock = int.MinValue;
_length = 0; _length = 0;
return; return;
@ -110,6 +113,8 @@ namespace LibHac.IO.Save
if (newBlockCount > oldBlockCount) if (newBlockCount > oldBlockCount)
{ {
int newBlocks = Fat.Allocate(newBlockCount - oldBlockCount); int newBlocks = Fat.Allocate(newBlockCount - oldBlockCount);
if (InitialBlock == -1) throw new IOException("Not enough space to resize file.");
Fat.Join(InitialBlock, newBlocks); Fat.Join(InitialBlock, newBlocks);
} }
else else

8
src/LibHac/IO/Save/SaveDataFileSystemCore.cs
View file

@ -38,6 +38,14 @@ namespace LibHac.IO.Save
{ {
path = PathTools.Normalize(path); path = PathTools.Normalize(path);
if (size == 0)
{
var emptyFileEntry = new SaveFileInfo { StartBlock = int.MinValue, Length = size };
FileTable.AddFile(path, ref emptyFileEntry);
return;
}
int blockCount = (int)Util.DivideByRoundUp(size, AllocationTable.Header.BlockSize); int blockCount = (int)Util.DivideByRoundUp(size, AllocationTable.Header.BlockSize);
int startBlock = AllocationTable.Allocate(blockCount); int startBlock = AllocationTable.Allocate(blockCount);