76 lines
2.1 KiB
Bash
Executable File
76 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# Copyright (c) Authors: https://www.armbian.com/authors
|
|
#
|
|
# This file is licensed under the terms of the GNU General Public
|
|
# License version 2. This program is licensed "as is" without any
|
|
# warranty of any kind, whether express or implied.
|
|
|
|
STATE_PATH="$1"
|
|
[[ -z "$1" ]] && STATE_PATH="/etc/armbian-leds.conf"
|
|
|
|
# Regular expression to extract the trigger from the led trigger file
|
|
REGEX=$'\[(.*)\]'
|
|
|
|
CMD_FIND=$(which find)
|
|
|
|
# Retrieve the trigger for a specific led and stores the entry in a destination state file
|
|
# Also retrieve all the writable parameters for a led and stores them in a destination state file
|
|
# $1 = base led path
|
|
# $2 = path of destination state file
|
|
function store_led() {
|
|
|
|
PATH="$1"
|
|
TRIGGER_PATH="$1/trigger"
|
|
DESTINATION="$2"
|
|
|
|
TRIGGER_CONTENT=$(<$TRIGGER_PATH)
|
|
|
|
[[ "$TRIGGER_CONTENT" =~ $REGEX ]]
|
|
|
|
TRIGGER_VALUE=${BASH_REMATCH[1]}
|
|
|
|
echo "[$LED]" >> $STATE_PATH
|
|
echo "trigger=$TRIGGER_VALUE" >> $DESTINATION
|
|
|
|
# In case the trigger is any of the kbd-*, don't store any other parameter
|
|
# This avoids num/scroll/capslock from being restored at startup
|
|
[[ "$TRIGGER_VALUE" =~ kbd-* ]] && return
|
|
|
|
COMMAND_PARAMS="$CMD_FIND $PATH/ -maxdepth 1 -type f ! -iname uevent ! -iname trigger -perm /u+w -printf %f\\n"
|
|
PARAMS=$($COMMAND_PARAMS)
|
|
|
|
# In case trigger is representing link-state for any network, use
|
|
# bash substitution to remove the brightness parameter and avoid
|
|
# ghost wan/lan/etc (led up while cable unplugged)
|
|
[[ "$TRIGGER_VALUE" == *":link" ]] && PARAMS=${PARAMS//"brightness"/}
|
|
|
|
for PARAM in $PARAMS; do
|
|
|
|
PARAM_PATH="$PATH/$PARAM"
|
|
VALUE=$(<$PARAM_PATH)
|
|
|
|
# If the variable contains non-printable characters
|
|
# suppose it contains binary and skip it
|
|
[[ "$VALUE" =~ [[:cntrl:]] ]] && continue
|
|
|
|
echo "$PARAM=$VALUE" >> $DESTINATION
|
|
|
|
done
|
|
|
|
}
|
|
|
|
# zeroing current state file if existing
|
|
[[ -f $STATE_PATH ]] && echo -n > $STATE_PATH
|
|
|
|
for LED in /sys/class/leds/*; do
|
|
[[ -d "$LED" ]] || continue
|
|
|
|
# Skip saving state for directories starting with enP e.g. enP1p1s0-0::lan enP2p1s0-2::lan etc. etc.
|
|
[[ "$(/usr/bin/basename "$LED")" == enP* ]] && continue
|
|
|
|
store_led $LED $STATE_PATH
|
|
echo >> $STATE_PATH
|
|
|
|
done
|