Mausberry Shutdown Script Doesn't Save Metadata

meleu

bug report

Our method to kill the command placed on the 4th line of /dev/shm/runcommand.info fails to kill ScummVM emulator. This is why:

[prompt]$ sed -n 4p /dev/shm/runcommand.info
bash /home/meleu/RetroPie/roms/scummvm/+Start\ ScummVM.sh "ft"

Then our approach kills bash processes.

I'm currently trying to find a strong solution. Will post it soon...

meleu

@hansolo77 @lostless @cyperghost

Can you guys test this one? Let's call it v1.7:

#!/bin/bash -x
# Before using this script you need to install inotify-tools:
#
#    sudo apt-get install inotify-tools
#
# I'm just trying to help with the script logic here.
# I DON'T HAVE A MAUSBERRY AND DIDN'T TEST THE GPIO STUFF HERE!
#
#########################################################
#  U S E   I T   A T   Y O U R   O W N   R I S K ! ! !  #
#########################################################
#
# meleu - July/2017
# kudos for @cyperghost , who is very persistent in help you guys! :-)

#this is the GPIO pin connected to the lead on switch labeled OUT
GPIOpin1=23

#this is the GPIO pin connected to the lead on switch labeled IN
GPIOpin2=24

echo "$GPIOpin1" > /sys/class/gpio/export
echo "in" > /sys/class/gpio/gpio$GPIOpin1/direction
echo "$GPIOpin2" > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio$GPIOpin2/direction
echo "1" > /sys/class/gpio/gpio$GPIOpin2/value

file="/sys/class/gpio/gpio$GPIOpin1/value"

# up to here this code is executed at booting (/etc/rc.local)
# let's wait for the creation of the "/sys/class/gpio/gpio$GPIOpin1/value"
sleep 30 # not sure if 30 seconds is a good value...

while inotifywait -qq -e modify "$file" ; do
    power="$(cat "$file")"
    [[ "$power" == 0 ]] && continue

    # explaining the crazy command below:
    # 1. get 4th line of runcommand.info (aka "emulator command")
    # 2. delete backslash '\' character
    # 3. replace every character that has a special meaning in a regex context with a dot '.'
    emu_command="$(sed -n 4p /dev/shm/runcommand.info | tr -d '\\"' | tr '^$[]*.()|+?{}' '.')"
    [[ -n "$emu_command" ]] && pkill -f "$emu_command" && sleep 10

    espid=$(pgrep -f "/opt/retropie/supplementary/.*/emulationstation([^.]|$)")
    if [[ "$espid" ]]; then
        touch /tmp/es-shutdown && chown pi:pi /tmp/es-shutdown
        kill "$espid"
        exit
    fi

    sudo poweroff
done

I did a trick for debugging, then if this script doesn't work, please perform this command:

grep 'rc\.local' /var/log/syslog > debug.log

It creates a file named debug.log paste its conten in ghostbin.com or something similar.

lostless

@meleu still did not work. I did the grep thing and can't find the syslog directory to find debug.log. also i don't have the /sys/class/gpio/gpio$GPIOpin1 directory. not sure if thats useful, but trying to help.

meleu

@lostless please, paste here the output of these commands:

ls -l /var/log/syslog

and

ls -lah /sys/class/gpio/*

lostless

first

-rw-r----- 1 root adm 2281836 Jul 29 03:38 /var/log/syslog

second

-rwxrwx--- 1 root gpio 4.0K Jul 29 02:50 /sys/class/gpio/export
lrwxrwxrwx 1 root gpio    0 Jul 29 02:50 /sys/class/gpio/gpio23 -> ../../devices/platform/soc/3f200000.gpio/gpiochip0/gpio/gpio23
lrwxrwxrwx 1 root gpio    0 Jul 29 02:50 /sys/class/gpio/gpio24 -> ../../devices/platform/soc/3f200000.gpio/gpiochip0/gpio/gpio24
lrwxrwxrwx 1 root gpio    0 Jul 29 02:50 /sys/class/gpio/gpiochip0 -> ../../devices/platform/soc/3f200000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root gpio    0 Jul 29 02:50 /sys/class/gpio/gpiochip100 -> ../../devices/gpiochip2/gpio/gpiochip100
lrwxrwxrwx 1 root gpio    0 Jul 29 02:50 /sys/class/gpio/gpiochip128 -> ../../devices/gpiochip1/gpio/gpiochip128
-rwxrwx--- 1 root gpio 4.0K Jul 29 02:50 /sys/class/gpio/unexport

meleu

@lostless

now these:

cd
grep rc.local /var/log/syslog* > debug.log
ls -l debug.log

lostless

-rw-r--r-- 1 pi pi 16656 Jul 29 03:44 debug.log

i found a debug.log in the home (~) directory

meleu

@lostless open this file on your Windows (I'm assuming you're using Windows), select all text and paste on ghostbin.com

lostless

@meleu nope mac. I can boot into windows if need be.

meleu

@lostless nop, I just need you to copy the entire file

lostless

@meleu
its just

/var/log/syslog:Jul 23 06:28:29 genepi systemd[1]: Starting /etc/rc.local Compatibility...
/var/log/syslog:Jul 23 06:28:29 genepi systemd[1]: Started /etc/rc.local Compatibility.

over and over with different dates and times. nothing else.

meleu

@lostless now I need you to do the same thing for /etc/rc.local and /etc/switch.sh (the last one is supposed to be my v1.7 script, but please, paste it on ghostbin so I can really check if everything is fine)

lostless

/etc/rc.local
https://ghostbin.com/paste/goucc

/switch.sh
https://ghostbin.com/paste/5agap

meleu

@lostless

ls -l /etc/switch.sh

lostless

@meleu said in Mausberry Shutdown Script Doesn't Save Metadata:

ls -l /etc/switch.sh

-rwxrwxrwx 1 root root 1889 Jul 29 02:42 /etc/switch.sh

meleu

@lostless
damn! I'm not getting what's wrong! Let's try this:

sudo bash -x /etc/switch.sh & 2> /home/pi/script-debug.txt

And then press the f%#&ing button. Pretty please... :)

It should turn off your pi...

lostless

@meleu aaaaaaaaaaaaaannnnnnnddddd...................

...........NO GOOD. >:( sorry man.

lostless

@meleu

 + GPIOpin1=23
+ GPIOpin2=24
+ echo 23
/etc/switch.sh: line 22: echo: write error: Device or resource busy
+ echo in
+ echo 24
/etc/switch.sh: line 24: echo: write error: Device or resource busy
+ echo out
+ echo 1
+ file=/sys/class/gpio/gpio23/value
+ sleep 30
+ inotifywait -qq -e modify /sys/class/gpio/gpio23/value

the readout of that and its stuck. My terminal has not finished what its doing.

meleu

@lostless are you able to use IRC? maybe it's better than this forum for an online conversation... :P

edit I'm at #retropie at irc.freenode.net

lostless

@meleu never used IRC. But willing to learn. Just need a client I assume? and somehow the #retropie is relevant somehow.