Fall back to lsof if reading /proc/<pid>/fd does not work on Linux.

PiotrSikora · Nov 11, 2011 · 05e712b · 05e712b
1 parent 4a3ec48
commit 05e712b
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/rabbit_mgmt_external_stats.erl b/src/rabbit_mgmt_external_stats.erl
@@ -64,8 +64,10 @@ get_used_fd() ->
     get_used_fd(os:type()).
 
 get_used_fd({unix, linux}) ->
-    {ok, Files} = file:list_dir("/proc/" ++ os:getpid() ++ "/fd"),
-    length(Files);
+    case file:list_dir("/proc/" ++ os:getpid() ++ "/fd") of
+        {ok,    Files} -> length(Files);
+        {error, _}     -> get_used_fd({unix, generic})
+    end;
 
 get_used_fd({unix, _}) ->
     get_used_fd_lsof();