base-files: add minimal mmc support

[openwrt/openwrt.git] / package / base-files / files / lib / functions / system.sh

diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh
index 5084c0052babdf3d9078b1c3058100e3aa6931ba..0ac291201452a01ab1ba4d96188990387f83576e 100644 (file)
--- a/package/base-files/files/lib/functions/system.sh
+++ b/package/base-files/files/lib/functions/system.sh
@@ -1,5 +1,8 @@
 # Copyright (C) 2006-2013 OpenWrt.org
 
+. /lib/functions.sh
+. /usr/share/libubox/jshn.sh
+
 get_mac_binary() {
        local path="$1"
        local offset="$2"
@@ -12,6 +15,44 @@ get_mac_binary() {
        hexdump -v -n 6 -s $offset -e '5/1 "%02x:" 1/1 "%02x"' $path 2>/dev/null
 }
 
+get_mac_label_dt() {
+       local basepath="/proc/device-tree"
+       local macdevice="$(cat "$basepath/aliases/label-mac-device" 2>/dev/null)"
+       local macaddr
+
+       [ -n "$macdevice" ] || return
+
+       macaddr=$(get_mac_binary "$basepath/$macdevice/mac-address" 0 2>/dev/null)
+       [ -n "$macaddr" ] || macaddr=$(get_mac_binary "$basepath/$macdevice/local-mac-address" 0 2>/dev/null)
+
+       echo $macaddr
+}
+
+get_mac_label_json() {
+       local cfg="/etc/board.json"
+       local macaddr
+
+       [ -s "$cfg" ] || return
+
+       json_init
+       json_load "$(cat $cfg)"
+       if json_is_a system object; then
+               json_select system
+                       json_get_var macaddr label_macaddr
+               json_select ..
+       fi
+
+       echo $macaddr
+}
+
+get_mac_label() {
+       local macaddr=$(get_mac_label_dt)
+
+       [ -n "$macaddr" ] || macaddr=$(get_mac_label_json)
+
+       echo $macaddr
+}
+
 find_mtd_chardev() {
        local INDEX=$(find_mtd_index "$1")
        local PREFIX=/dev/mtd
@@ -94,20 +135,64 @@ mtd_get_part_size() {
        done < /proc/mtd
 }
 
+mmc_get_mac_binary() {
+       local part_name="$1"
+       local offset="$2"
+       local part
+
+       part=$(find_mmc_part "$part_name")
+       get_mac_binary "$part" "$offset"
+}
+
 macaddr_add() {
        local mac=$1
        local val=$2
        local oui=${mac%:*:*:*}
        local nic=${mac#*:*:*:}
 
-       nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
+       nic=$(printf "%06x" $((0x${nic//:/} + val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
        echo $oui:$nic
 }
 
+macaddr_geteui() {
+       local mac=$1
+       local sep=$2
+
+       echo ${mac:9:2}$sep${mac:12:2}$sep${mac:15:2}
+}
+
+macaddr_setbit() {
+       local mac=$1
+       local bit=${2:-0}
+
+       [ $bit -gt 0 -a $bit -le 48 ] || return
+
+       printf "%012x" $(( 0x${mac//:/} | 2**(48-bit) )) | sed -e 's/\(.\{2\}\)/\1:/g' -e 's/:$//'
+}
+
+macaddr_unsetbit() {
+       local mac=$1
+       local bit=${2:-0}
+
+       [ $bit -gt 0 -a $bit -le 48 ] || return
+
+       printf "%012x" $(( 0x${mac//:/} & ~(2**(48-bit)) )) | sed -e 's/\(.\{2\}\)/\1:/g' -e 's/:$//'
+}
+
 macaddr_setbit_la() {
+       macaddr_setbit $1 7
+}
+
+macaddr_unsetbit_mc() {
        local mac=$1
 
-       printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
+       printf "%02x:%s" $((0x${mac%%:*} & ~0x01)) ${mac#*:}
+}
+
+macaddr_random() {
+       local randsrc=$(get_mac_binary /dev/urandom 0)
+       
+       echo "$(macaddr_unsetbit_mc "$(macaddr_setbit_la "${randsrc}")")"
 }
 
 macaddr_2bin() {