modules/admin-mini: sync backup code with admin-full

diff --git a/modules/admin-mini/luasrc/controller/mini/system.lua b/modules/admin-mini/luasrc/controller/mini/system.lua
index e562af0283f53fb13aa011b79e50a6fb49c7ddb1..797b228c82027a050178b84a48b417869a8d3605 100644 (file)
--- a/modules/admin-mini/luasrc/controller/mini/system.lua
+++ b/modules/admin-mini/luasrc/controller/mini/system.lua
@@ -55,12 +55,11 @@ function action_backup()
                luci.template.render("mini/applyreboot")
                luci.sys.reboot()
        elseif backup then
-               luci.util.perror(backup_cmd:format(_keep_pattern()))
-               local backup_fpi = io.popen(backup_cmd:format(_keep_pattern()), "r")
+               local reader = ltn12_popen(backup_cmd:format(_keep_pattern()))
                luci.http.header('Content-Disposition', 'attachment; filename="backup-%s-%s.tar.gz"' % {
                        luci.sys.hostname(), os.date("%Y-%m-%d")})
                luci.http.prepare_content("application/x-targz")
-               luci.ltn12.pump.all(luci.ltn12.source.file(backup_fpi), luci.http.write)
+               luci.ltn12.pump.all(reader, luci.http.write)
        elseif reset then
                luci.template.render("mini/applyreboot")
                luci.util.exec("mtd -r erase rootfs_data")