From 1510dd113d86a62405cb61b370fbd716450f9d58 Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Fri, 11 Dec 2015 20:29:55 +0100
Subject: util.datamanager: Add some comments about the append function
---
util/datamanager.lua | 3 +++
1 file changed, 3 insertions(+)
diff --git a/util/datamanager.lua b/util/datamanager.lua
index ce4c5b5a..510c0161 100644
--- a/util/datamanager.lua
+++ b/util/datamanager.lua
@@ -209,17 +209,20 @@ local function store(username, host, datastore, data)
return true;
end
+-- Append a blob of data to a file
local function append(username, host, datastore, ext, data)
local filename = getpath(username, host, datastore, ext, true);
local ok;
local f, msg = io_open(filename, "r+");
if not f then
+ -- File did probably not exist, let's create it
f, msg = io_open(filename, "w");
if not f then
return nil, msg;
end
end
+
local pos = f:seek("end");
ok, msg = fallocate(f, pos, #data);
if not ok then
--
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