Getting mac address in uci-defaults script

Installing and Using OpenWrt
1

I need to get a mac address in the uci-defaults script and I've tried:
. /usr/share/libubox/jshn.sh; json_load "$(/bin/ubus call network.device status)";
but I get a command failed message, even tho
json_load "$(/bin/ubus call system board)";
works just fine.

So for now I ended up just screen scraping ifconfig, but I'm wondering if there's a better option?

2

you tried writing source instead of the dot? Should do the same in bash and was suggested for similar uses in the LEDE wiki.

3

If it mattered, then the call to system board would have also failed. But even with the source instead of the dot, it still fails:

+ source /usr/share/libubox/jshn.sh
+ /bin/ubus call network.device status
Command failed: Not found
4

The uci-defaults script runs before netifd is started, so you cannot query the ubus network namespace at this point in time. If you know the device name you can use cat /sys/class/net/$dev/address which is somewhat cleaner than screen scraping ifconfig.

2 Likes
5

Thank you!