diff options
Diffstat (limited to 'packages/slugos-init/files/leds')
| -rw-r--r-- | packages/slugos-init/files/leds | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/packages/slugos-init/files/leds b/packages/slugos-init/files/leds new file mode 100644 index 0000000000..8132a22046 --- /dev/null +++ b/packages/slugos-init/files/leds @@ -0,0 +1,214 @@ +#!/bin/sh +# leds +# +# utilities to manipulate the settings of the system leds +# +# load the utility functions unless this script is being called +# just to load its own functions. +test "$1" != leds && { + . /etc/default/rcS + . /etc/default/functions +} + +# +# led_set led-dir off|on|slow|fast|panic|blink|flash|user|* +# set the given LED (expressed as a directory) to the +# given status. USER_LED may be set to indicate how to +# handle the 'user' setting. +led_user_default(){ + case "$(machine)" in + nslu2) echo -n "cpu-idle";; + *) echo -n "cpu-activity";; + esac +} +# +led_set(){ + local setting + # expect led-dir state + if test -d "$1" + then + setting="$2" + case "$setting" in + user) if test -n "$USER_LED" + then + setting="$USER_LED" + else + setting="$(led_user_default)" + fi;; + esac + + case "$setting" in + off|on) echo -n none + + case "$setting" in + on) echo -n 100;; + off) echo -n 0;; + esac >"$1/brightness";; + + slow|fast|panic|blink|flash) + echo -n timer + + case "$setting" in + flash) echo -n 727;; + blink) echo -n 72;; + slow) echo -n 400;; + fast) echo -n 100;; + panic) echo -n 50;; + esac >"$1/frequency" + + case "$setting" in + flash) echo -n 10;; + blink) echo -n 1000;; + *) echo -n 100;; + esac >"$1/duty_cycle";; + + cpu-idle) echo -n cpu-idle + # these settings work well on NSLU2 + echo -n 80 >"$1/frequency" + echo -n 10 >"$1/duty_cycle";; + + *) echo -n "$setting";; + esac >"$1/trigger" + else + echo "leds: $1: no such directory" >&2 + return 1 + fi +} + +# +# sysled [boot] system|user|singleuser|shutdown [error|panic|*] +# set the system LEDs to indicate the given boot state, the function +# will temporarily mount sysfs is necessary (using /mnt) +# +# the cases for two LEDs (ready+status) +sysled_readystatus(){ + local ready status + # expect dir [boot](system|user) [error|panic] + case "$3" in + error) ready=fast; status=off;; + panic) ready=fast; status=fast;; + *) case "$2" in + bootsystem) ready=slow; status=slow;; + system) ready=on; status=on;; + bootuser) ready=on; status=slow;; + user) ready=user; status=off;; + bootsingleuser) ready=on; status=slow;; + singleuser) ready=user; status=user;; + bootshutdown) ready=on; status=slow;; + shutdown) ready=slow; status=on;; + esac;; + esac + + led_set "$1/ready" "$ready" + led_set "$1/status" "$status" +} +# +# the cases for one LED (just ready) +sysled_ready(){ + local ready + # expect dir [boot](system|user) [error|panic] + case "$3" in + error) ready=fast;; + panic) ready=panic;; + *) case "$2" in + bootsystem) ready=flash;; + system) ready=blink;; + bootuser) ready=slow;; + user) ready=user;; + bootsingleuser) ready=flash;; + singleuser) ready=blink;; + bootshutdown) ready=slow;; + shutdown) ready=blink;; + esac;; + esac + + led_set "$1/ready" "$ready" +} +# +sysled(){ + local mp st boot isst + mp=/sys + st=1 + boot= + + # validate arguments + if test "$1" = boot + then + shift + boot=boot + fi + case "$1" in + system|user|singleuser|shutdown) :;; + *) echo "sysled: unknown option '$1'" >&2 + echo " usage: sysled [boot] system|user|singleuser|shutdown [error|panic|*]" >&2 + return 1;; + esac + + if test ! -d "$mp/class/leds" && mount -t sysfs sysfs /mnt + then + mp=/mnt + fi + # + # check for the 'ready' LED - otherwise do nothing + if test -d "$mp/class/leds/ready" + then + if test -d "$mp/class/leds/status" + then + sysled_readystatus "$mp/class/leds" $boot"$@" + else + sysled_ready "$mp/class/leds" $boot"$@" + fi + fi + # + # clean up + test "$mp" = /mnt && umount /mnt + return "$st" +} + +# +# beep [double] +# emit a beep, or a double beep +# dummy - at present does nothing +beep(){ + return 0 +} + +# +# leds_help +# be helpful +# leds <led> off|on|slow|fast|panic|blink|flash|user|* +# leds [boot] system|user|singleuser|shutdown [error|panic|*] +leds_help(){ + echo "leds: change the setting of the LEDs" >&2 + echo " usage:" >&2 + echo " leds [boot] system|user|singleuser|shutdown [error|panic|*]" >&2 + echo " set leds during system boot to indicate a particular boot" >&2 + echo " state. 'boot' means that the system is transitioning to" >&2 + echo " the new state. 'error' or 'panic' means a (potentially)" >&2 + echo " recoverable error or an unrecoverable error ('panic') has" >&2 + echo " occured." >&2 + echo " <led> off|on|slow|fast|panic|blink|flash|user|*" >&2 + echo " set the named led to the given display, an arbitrary led" >&2 + echo " trigger may be given. 'user' will use the default specified" >&2 + echo " in USER_LED from /etc/default/rcS, if not specified a cpu" >&2 + echo " activity setting appropriate to the machine is selected" >&2 + echo " beep [double]" >&2 + echo " if possible cause the machine to emit a beep" >&2 +} + +# +# the real command, if required +case "$1" in +boot|system|user|singleuser|shutdown) + sysled "$@";; + +beep) beep "$@";; + +"") leds_help;; +help) leds_help;; + +leds) # just load the functions + ;; + +*) led_set /sys/class/leds/"$@" +esac |