Merge 0.6.2/waqas with 0.6.2/MattJ

[prosody.git] / plugins / mod_posix.lua

diff --git a/plugins/mod_posix.lua b/plugins/mod_posix.lua
index 8b0bd3992343cba31dd47f7ff1e80ef39b775aa3..ed0dbd87abade5a82faaa8cd87e008342db93ee9 100644 (file)
--- a/plugins/mod_posix.lua
+++ b/plugins/mod_posix.lua
@@ -20,6 +20,7 @@ end
 local logger_set = require "util.logger".setwriter;
 
 local lfs = require "lfs";
+local stat = lfs.attributes;
 
 local prosody = _G.prosody;
 
@@ -78,7 +79,8 @@ local function write_pidfile()
        end
        pidfile = module:get_option("pidfile");
        if pidfile then
-               pidfile_handle, err = io.open(pidfile, "a+");
+               local mode = stat(pidfile) and "r+" or "w+";
+               pidfile_handle, err = io.open(pidfile, mode);
                if not pidfile_handle then
                        module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
                        prosody.shutdown("Couldn't write pidfile");