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DnsApplicationAssemblyLoadContext: fixed unmanaged dll loading issue on Linux that could cause DNS server to crash.

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This commit is contained in:
Shreyas Zare
2025-02-02 16:00:05 +05:30
parent 114ec12748
commit 4b4b3720da
1 changed files with 4 additions and 7 deletions
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11
DnsServerCore/Dns/Applications/DnsApplicationAssemblyLoadContext.cs
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@@ -201,12 +201,10 @@ namespace DnsServerCore.Dns.Applications
{
if (!_loadedUnmanagedDlls.TryGetValue(unmanagedDllPath.ToLowerInvariant(), out IntPtr value))
{
//load the unmanaged DLL
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
value = LoadUnmanagedDllFromPath(GetTempDllFile(unmanagedDllPath));
else
value = LoadUnmanagedDllFromPath(unmanagedDllPath);
//load the unmanaged DLL via temp file
// - to allow uninstalling/updating app at runtime on Windows
// - to avoid dns server crash issue when updating apps on Linux
value = LoadUnmanagedDllFromPath(GetTempDllFile(unmanagedDllPath));
_loadedUnmanagedDlls.Add(unmanagedDllPath.ToLowerInvariant(), value);
}
@@ -221,7 +219,6 @@ namespace DnsServerCore.Dns.Applications
private string GetTempDllFile(string dllFile)
{
//copy dll into temp file for loading to allow uninstalling/updating app at runtime.
string tempPath = Path.GetTempFileName();
using (FileStream srcFile = new FileStream(dllFile, FileMode.Open, FileAccess.Read))