modules/admin-full: reuse sysupgrade facilities to create backup archive

diff --git a/modules/admin-full/luasrc/controller/admin/system.lua b/modules/admin-full/luasrc/controller/admin/system.lua
index 68f3d258ddff728225a6b0f1dd64215735b20404..a5666ccbb22e0346fb8b64e31ea3dad12a61dbc5 100644 (file)
--- a/modules/admin-full/luasrc/controller/admin/system.lua
+++ b/modules/admin-full/luasrc/controller/admin/system.lua
@@ -2,7 +2,7 @@
 LuCI - Lua Configuration Interface
 
 Copyright 2008 Steven Barth <steven@midlink.org>
-Copyright 2008-2009 Jo-Philipp Wich <xm@subsignal.org>
+Copyright 2008-2011 Jo-Philipp Wich <xm@subsignal.org>
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -186,7 +186,7 @@ function action_flashops()
        local reset_avail   = os.execute([[grep '"rootfs_data"' /proc/mtd >/dev/null 2>&1]]) == 0
 
        local restore_cmd = "tar -xzC/ >/dev/null 2>&1"
-       local backup_cmd  = "tar -czT %s 2>/dev/null"
+       local backup_cmd  = "sysupgrade --create-backup - 2>/dev/null"
        local image_tmp   = "/tmp/firmware.img"
 
        local function image_supported()
@@ -249,20 +249,11 @@ function action_flashops()
                --
                -- Assemble file list, generate backup
                --
-               local filelist = "/tmp/luci-backup-list.%d" % os.time()
-               sys.call(
-                       "( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' /etc/sysupgrade.conf " ..
-                       "/lib/upgrade/keep.d/* 2>/dev/null) -type f 2>/dev/null; " ..
-                       "opkg list-changed-conffiles ) | sort -u > %s" % filelist
-               )
-               if fs.access(filelist) then
-                       local reader = ltn12_popen(backup_cmd:format(filelist))
-                       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(reader, luci.http.write)
-                       fs.unlink(filelist)
-               end
+               local reader = ltn12_popen(backup_cmd)
+               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(reader, luci.http.write)
        elseif luci.http.formvalue("restore") then
                --
                -- Unpack received .tar.gz