diff --git a/Frameworks/OakSystem/src/application.cc b/Frameworks/OakSystem/src/application.cc
index 698b156384..8f712e3226 100644
--- a/Frameworks/OakSystem/src/application.cc
+++ b/Frameworks/OakSystem/src/application.cc
@@ -1,9 +1,9 @@
 #include "application.h"
-#include "process.h"
 #include <io/io.h>
 #include <cf/cf.h>
 #include <text/format.h>
 #include <oak/compat.h>
+#include <oak/datatypes.h>
 #include <oak/debug.h>
 
 OAK_DEBUG_VAR(Application);
diff --git a/Frameworks/OakSystem/src/process.cc b/Frameworks/OakSystem/src/process.cc
index 6310a39dd3..bfeae290b4 100644
--- a/Frameworks/OakSystem/src/process.cc
+++ b/Frameworks/OakSystem/src/process.cc
@@ -1,6 +1,7 @@
 #include "process.h"
 #include <io/io.h>
 #include <oak/oak.h>
+#include <oak/datatypes.h>
 #include <oak/compat.h>
 #include <oak/server.h>
 #include <text/format.h>
@@ -98,23 +99,6 @@ namespace oak
 		new kill_process_group_in_background_t(groupId);
 	}
 
-	c_array::c_array (std::map<std::string, std::string> const& map)
-	{
-		char** p = new char* [map.size() + 1];
-		_array = p;
-		iterate(pair, map)
-			*p++ = strdup((pair->first + "=" + pair->second).c_str());
-		*p = NULL;
-	}
-
-	c_array::~c_array ()
-	{
-		char* const* p = _array;
-		while(p && *p)
-			free(*p++);
-		delete[] _array;
-	}
-
 	struct process_server_t
 	{
 		process_server_t ();
diff --git a/Frameworks/OakSystem/src/process.h b/Frameworks/OakSystem/src/process.h
index a5031b9ade..1a67eea1fe 100644
--- a/Frameworks/OakSystem/src/process.h
+++ b/Frameworks/OakSystem/src/process.h
@@ -9,15 +9,6 @@ namespace oak
 	PUBLIC std::map<std::string, std::string> const& basic_environment ();
 	PUBLIC void kill_process_group_in_background (pid_t groupId);
 
-	struct PUBLIC c_array
-	{
-		c_array (std::map<std::string, std::string> const& map);
-		~c_array ();
-		operator char* const* () const { return _array; }
-	private:
-		char* const* _array;
-	};
-
 	struct PUBLIC process_t
 	{
 		WATCH_LEAKS(oak::process_t);
diff --git a/Frameworks/network/src/filter_tbz.h b/Frameworks/network/src/filter_tbz.h
index 11e83462c3..ab4ec984dd 100644
--- a/Frameworks/network/src/filter_tbz.h
+++ b/Frameworks/network/src/filter_tbz.h
@@ -4,7 +4,7 @@
 #include "download.h" // filter_t
 #include <io/io.h>
 #include <OakSystem/application.h>
-#include <OakSystem/process.h>
+#include <oak/datatypes.h>
 #include <text/format.h>
 #include <text/trim.h>
 
diff --git a/Frameworks/network/src/tbz.cc b/Frameworks/network/src/tbz.cc
index babb98e3a5..aef0b9f404 100644
--- a/Frameworks/network/src/tbz.cc
+++ b/Frameworks/network/src/tbz.cc
@@ -1,6 +1,7 @@
 #include "tbz.h"
 #include <text/format.h>
 #include <OakSystem/process.h>
+#include <oak/datatypes.h>
 
 namespace network
 {
diff --git a/Shared/include/oak/datatypes.h b/Shared/include/oak/datatypes.h
new file mode 100644
index 0000000000..7adadb0f85
--- /dev/null
+++ b/Shared/include/oak/datatypes.h
@@ -0,0 +1,35 @@
+#ifndef OAK_DATATYPES_H_665IJ16Q
+#define OAK_DATATYPES_H_665IJ16Q
+
+namespace oak
+{
+	namespace
+	{
+		struct c_array
+		{
+			c_array (std::map<std::string, std::string> const& map)
+			{
+				char** p = new char* [map.size() + 1];
+				_array = p;
+				iterate(pair, map)
+					*p++ = strdup((pair->first + "=" + pair->second).c_str());
+				*p = NULL;
+			}
+
+			~c_array ()
+			{
+				char* const* p = _array;
+				while(p && *p)
+					free(*p++);
+				delete[] _array;
+			}
+
+			operator char* const* () const { return _array; }
+
+		private:
+			char* const* _array;
+		};
+	}
+}
+
+#endif /* end of include guard: OAK_DATATYPES_H_665IJ16Q */