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create unique temporary directories to prevent permission issues #7173

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Jul 27, 2024
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6 changes: 4 additions & 2 deletions src/Microsoft.ML.Core/Data/Repository.cs
Original file line number Diff line number Diff line change
Expand Up @@ -123,8 +123,10 @@ private static string GetShortTempDir(IExceptionContext ectx)
string tempPath = ectx is IHostEnvironmentInternal iHostInternal ?
iHostInternal.TempFilePath :
Path.GetTempPath();

string path = Path.Combine(Path.GetFullPath(tempPath), "ml_dotnet", Path.GetRandomFileName());
int dirNumber = 0;
string mlNetTempDir = null!;
while (Directory.Exists(mlNetTempDir = Path.Combine(Path.GetFullPath(tempPath), $"ml_dotnet{dirNumber++}"))) ;
var path = Path.Combine(mlNetTempDir, Path.GetRandomFileName());
Directory.CreateDirectory(path);
return path;
}
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