The R5 compatibility is now turned off when the socket functions are used

within the library - theoretically, this mechanism could be extended to
turn the compatibility layer on and off based on the images that call the
functions (allowing to mix R5 and BONE network add-ons in a single executable).
This change fixes R5 networking apps such as Vision, and NetworkTime (both
now seem to work fine under Haiku).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19431 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/network/init.cpp

@@ -16,6 +16,26 @@
 
 
 bool __gR5Compatibility = false;
+addr_t __gNetworkStart;
+addr_t __gNetworkEnd;
+
+
+static void
+find_own_image()
+{
+	int32 cookie = 0;
+	image_info info;
+	while (get_next_image_info(B_CURRENT_TEAM, &cookie, &info) == B_OK) {
+		if (((uint32)info.text <= (uint32)find_own_image
+			&& (uint32)info.text + (uint32)info.text_size > (uint32)find_own_image)) {
+			// found us
+			__gNetworkStart = (addr_t)min_c(info.text, info.data);
+			__gNetworkEnd = min_c((addr_t)info.text + info.text_size,
+				(addr_t)info.data + info.data_size);
+			break;
+		}
+	}
+}
 
 
 extern "C" void
@@ -55,6 +75,7 @@ initialize_before()
 
 	if (enable > 0) {
 		__gR5Compatibility = true;
+		find_own_image();
 		debug_printf("libnetwork.so running in R5 compatibility mode.\n");
 	}
 }