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Add handling for libdl.so.2 #19

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merged 1 commit into from
Dec 20, 2022
Merged

Add handling for libdl.so.2 #19

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60 changes: 51 additions & 9 deletions NativeLibraryLoader/Libdl.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,20 +5,62 @@ namespace NativeLibraryLoader
{
internal static class Libdl
{
private const string LibName = "libdl";
private static class Libdl1
{
private const string LibName = "libdl";

[DllImport(LibName)]
public static extern IntPtr dlopen(string fileName, int flags);

[DllImport(LibName)]
public static extern IntPtr dlsym(IntPtr handle, string name);

[DllImport(LibName)]
public static extern int dlclose(IntPtr handle);

[DllImport(LibName)]
public static extern string dlerror();
}

private static class Libdl2
{
private const string LibName = "libdl.so.2";

[DllImport(LibName)]
public static extern IntPtr dlopen(string fileName, int flags);

[DllImport(LibName)]
public static extern IntPtr dlsym(IntPtr handle, string name);

[DllImport(LibName)]
public static extern int dlclose(IntPtr handle);

[DllImport(LibName)]
public static extern string dlerror();
}

static Libdl()
{
try
{
Libdl1.dlerror();
m_useLibdl1 = true;
}
catch
{
}
}

private static bool m_useLibdl1;

public const int RTLD_NOW = 0x002;

[DllImport(LibName)]
public static extern IntPtr dlopen(string fileName, int flags);
public static IntPtr dlopen(string fileName, int flags) => m_useLibdl1 ? Libdl1.dlopen(fileName, flags) : Libdl2.dlopen(fileName, flags);

[DllImport(LibName)]
public static extern IntPtr dlsym(IntPtr handle, string name);
public static IntPtr dlsym(IntPtr handle, string name) => m_useLibdl1 ? Libdl1.dlsym(handle, name) : Libdl2.dlsym(handle, name);

[DllImport(LibName)]
public static extern int dlclose(IntPtr handle);
public static int dlclose(IntPtr handle) => m_useLibdl1 ? Libdl1.dlclose(handle) : Libdl2.dlclose(handle);

[DllImport(LibName)]
public static extern string dlerror();
public static string dlerror() => m_useLibdl1 ? Libdl1.dlerror() : Libdl2.dlerror();
}
}