openwrt/target/linux/ath79/generic/base-files/lib/functions/k2t.sh
Adrian Schmutzler 0130022bae ath79: split base-files into subtargets
While most of the target's contents are split into subtargets, the
base-files are maintained for the target as a whole.

However, OpenWrt already implements a mechanism that will use (and
even prefer) files in the subtargets' directories. This can be
exploited to make several scripts subtarget-specific and thus save
some space (especially helpful for the tiny devices).

The only script remaining in parent base-files is
/etc/hotplug.d/ieee80211/00-wifi-migration, everything else is
moved/split.

Note that this will increase overall code lines, but reduce code
per subtarget.

base-files ipk size reduction:
master (generic)   49135 B
split (generic)    48533 B (- 0.6 kiB)
split (tiny)       43337 B (- 5.7 kiB)
split (nand)       44423 B (- 4.6 kiB)

Tested on TL-WR1043ND v4 (generic) and TL-WR841N v12 (tiny).

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2019-10-27 14:24:22 +01:00

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#!/bin/sh
#
# Copyright (C) 2018 Weijie Gao <hackpascal@gmail.com>
#
# Helper function to extract mac addresses from mtd part for Phicomm K2T
#
. /lib/functions.sh
. /lib/functions/system.sh
. /usr/share/libubox/jshn.sh
k2t_config_load() {
local mtd_blk=$(find_mtd_part config)
if [ -z "$mtd_blk" ]; then
echo "k2t_config_load: no mtd part named config" >&2
exit 1
fi
local json_size=$(dd if=$mtd_blk bs=1 count=8 2>/dev/null)
json_size="0x$json_size"
json_size=$((json_size))
if [ "$?" -ne 0 ]; then
echo "k2t_config_load: invalid json data size" >&2
exit 2
fi
if [ "$json_size" -eq 0 ]; then
echo "k2t_config_load: empty json data" >&2
exit 3
fi
local json_data=$(dd if=$mtd_blk bs=1 skip=8 count=$json_size 2>/dev/null)
json_load "$json_data"
}
k2t_get_mac() {
local old_ns
json_set_namespace "k2t" old_ns
if k2t_config_load; then
json_select "this_dev_info"
json_get_var val "$1"
json_select ..
fi
json_set_namespace old_ns
echo $val
}