Add mod_posix, fixes #5

diff --git a/plugins/mod_posix.lua b/plugins/mod_posix.lua
new file mode 100644 (file)
index 0000000..8dc4c77
--- /dev/null
+++ b/plugins/mod_posix.lua
@@ -0,0 +1,50 @@
+
+local pposix = assert(require "util.pposix");
+
+local config_get = require "core.configmanager".get;
+local logger_set = require "util.logger".setwriter;
+
+module.host = "*"; -- we're a global module
+
+if not config_get("*", "core", "no_daemonize") then
+       local function daemonize_server()
+               local logwriter;
+               
+               local logfilename = config_get("*", "core", "log");
+               if logfilename then
+                       local logfile = io.open(logfilename, "a+");
+                       if logfile then
+                               local write, format, flush = logfile.write, string.format, logfile.flush;
+                               logwriter = function (name, level, message, ...)
+                                                       if ... then 
+                                                               write(logfile, name, "\t", level, "\t", format(message, ...), "\n");
+                                                       else
+                                                               write(logfile, name, "\t" , level, "\t", message, "\n");
+                                                       end
+                                                       flush(logfile);
+                                               end;
+                       end
+               else
+                       log("debug", "No logging specified, will continue with default");
+               end
+               
+               local ok, ret = pposix.daemonize();
+               if not ok then
+                       log("error", "Failed to daemonize: %s", ret);
+               elseif ret and ret > 0 then
+                       log("info", "Daemonized to pid %d", ret);                       
+                       os.exit(0);
+               else
+                       log("info", "Successfully daemonized");
+
+                       if logwriter then
+                               local ok, ret = logger_set(logwriter);
+                               if not ok then
+                                       log("error", "Couldn't set new log output: %s", ret);
+                               end
+                       end
+                       
+               end
+       end
+       module:add_event_hook("server-starting", daemonize_server);
+end