base-files: add function to get mac as text from flash

Add a function to get a mac stored as text from flash. The octets of
the mac address need to be separated by any separator supported by
macaddr_canonicalize().

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>
master
Mathias Kresin 6 years ago
parent ec28d2797c
commit dfee452713
  1. 23
      package/base-files/files/lib/functions/system.sh

@ -38,6 +38,29 @@ mtd_get_mac_ascii() {
[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
}
mtd_get_mac_text() {
local mtdname=$1
local offset=$2
local part
local mac_dirty
part=$(find_mtd_part "$mtdname")
if [ -z "$part" ]; then
echo "mtd_get_mac_text: partition $mtdname not found!" >&2
return
fi
if [ -z "$offset" ]; then
echo "mtd_get_mac_text: offset missing!" >&2
return
fi
mac_dirty=$(dd if="$part" bs=1 skip="$offset" count=17 2>/dev/null)
# "canonicalize" mac
[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
}
mtd_get_mac_binary() {
local mtdname="$1"
local offset="$2"

Loading…
Cancel
Save