util.pposix: Add function for atomically appending data to a file

author: Kim Alvefur <zash@zash.se>
date: Wed, 01 Mar 2017 01:33:00 +0100
parent: 7922:2fd20f372cb1
child: 8012:e898c8fda986
--- a/prosodyctl	Sat Mar 25 17:32:42 2017 +0100
+++ b/prosodyctl	Wed Mar 01 01:33:00 2017 +0100
@@ -135,7 +135,7 @@
 -- Switch away from root and into the prosody user --
 local switched_user, current_uid;
 
-local want_pposix_version = "0.3.6";
+local want_pposix_version = "0.3.7";
 local ok, pposix = pcall(require, "util.pposix");
 
 if ok and pposix then