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Fix null reference exception in FAT filesystem when entry points to a cluster beyond volume.

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This commit is contained in:
Natalia Portillo
2021-07-19 13:43:53 +01:00
parent baeaac8190
commit 501fcd69eb
1 changed files with 1 additions and 3 deletions
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4
Aaru.Filesystems/FAT/File.cs
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@@ -192,10 +192,8 @@ namespace Aaru.Filesystems
if((_fat32 && entry.ea_handle << 16 > 0) ||
entry.start_cluster > 0)
{
stat.Blocks = _fat32 ? GetClusters((uint)((entry.ea_handle << 16) + entry.start_cluster)).Length
: GetClusters(entry.start_cluster).Length;
}
stat.Length = stat.Blocks * stat.BlockSize;
}
@@ -221,7 +219,7 @@ namespace Aaru.Filesystems
uint[] GetClusters(uint startCluster)
{
if(startCluster == 0)
return null;
return new uint[0];
if(startCluster >= XmlFsType.Clusters)
return null;