From 88cd2d41acb994684a3e4ead1b1676019f43b4b6 Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Thu, 8 Feb 2018 11:26:18 -0500
Subject: Add plugins to make Nix more extensible.

All plugins in plugin-files will be dlopened, allowing them to
statically construct instances of the various Register* types Nix
supports.
---
 src/libstore/globals.cc | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'src/libstore/globals.cc')

diff --git a/src/libstore/globals.cc b/src/libstore/globals.cc
index d3c96ddd6e..21ab0e6296 100644
--- a/src/libstore/globals.cc
+++ b/src/libstore/globals.cc
@@ -6,6 +6,7 @@
 #include <algorithm>
 #include <map>
 #include <thread>
+#include <dlfcn.h>
 
 
 namespace nix {
@@ -137,4 +138,18 @@ void MaxBuildJobsSetting::set(const std::string & str)
         throw UsageError("configuration setting '%s' should be 'auto' or an integer", name);
 }
 
+
+void initPlugins()
+{
+    for (const auto & pluginFile : settings.pluginFiles.get()) {
+        /* handle is purposefully leaked as there may be state in the
+           DSO needed by the action of the plugin. */
+        void *handle =
+            dlopen(pluginFile.c_str(), RTLD_LAZY | RTLD_LOCAL);
+        if (!handle)
+            throw Error(format("could not dynamically open plugin file '%1%': %2%") % pluginFile % dlerror());
+    }
+}
+
+
 }
-- 
cgit 1.4.1