From fc38b8c4f4fe84d6ed15128a96348f5a256bb9a2 Mon Sep 17 00:00:00 2001 From: Kim Alvefur Date: Wed, 1 Mar 2017 16:44:59 +0100 Subject: util.datamanager: Ignore ENOENT (no such file) when loading data --- util/datamanager.lua | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/util/datamanager.lua b/util/datamanager.lua index 585bb83d..52d0c0bf 100644 --- a/util/datamanager.lua +++ b/util/datamanager.lua @@ -39,6 +39,7 @@ local function fallocate(f, offset, len) f:seek("set", offset); return true; end; +local ENOENT = 2; pcall(function() local pposix = require "util.pposix"; raw_mkdir = pposix.mkdir or raw_mkdir; -- Doesn't trample on umask @@ -122,8 +123,12 @@ local function getpath(username, host, datastore, ext, create) end local function load(username, host, datastore) - local data, err = envloadfile(getpath(username, host, datastore), {}); + local data, err, errno = envloadfile(getpath(username, host, datastore), {}); if not data then + if errno == ENOENT then + -- No such file, ok to ignore + return nil; + end local mode = lfs.attributes(getpath(username, host, datastore), "mode"); if not mode then log("debug", "Assuming empty %s storage ('%s') for user: %s@%s", datastore, err, username or "nil", host or "nil"); @@ -145,9 +150,9 @@ end local function atomic_store(filename, data) local scratch = filename.."~"; - local f, ok, msg; + local f, ok, msg, errno; - f, msg = io_open(scratch, "w"); + f, msg, errno = io_open(scratch, "w"); if not f then return nil, msg; end @@ -295,8 +300,12 @@ end local function list_load(username, host, datastore) local items = {}; - local data, err = envloadfile(getpath(username, host, datastore, "list"), {item = function(i) t_insert(items, i); end}); + local data, err, errno = envloadfile(getpath(username, host, datastore, "list"), {item = function(i) t_insert(items, i); end}); if not data then + if errno == ENOENT then + -- No such file, ok to ignore + return nil; + end local mode = lfs.attributes(getpath(username, host, datastore, "list"), "mode"); if not mode then log("debug", "Assuming empty %s storage ('%s') for user: %s@%s", datastore, err, username or "nil", host or "nil"); -- cgit v1.2.3