Installing inside docker in a raspberry pi with files in external ext4 hdd

[miqmago]

Describe the bug
I'm getting bash: ./java: Permission denied

To Reproduce
I've installed all the libraries:

# from outside docker
sudo git clone https://github.com/codemasher/php-ext-xz.git
sudo chown www-data:www-data php-ext-xz/ -R

# from inside docker
docker exec -it -u 0 nextcloud_app bash
apt-get update
apt-get install git liblzma-dev -y
cd ..
mv html/php-ext-xz/ .
cd php-ext-xz
phpize
./configure
make
make install
echo "extension=xz.so" >> /usr/local/etc/php/conf.d/nextcloud.ini
exit

docker exec -u www-data nextcloud_app php /var/www/html/occ libresign:install --all
docker exec -u www-data nextcloud_app bash -c /var/www/html/data/appdata_xxxxxxxxx/libresign/java/jdk-17.0.5+8-jre/bin/java

Always getting

bash: line 1: /var/www/html/data/appdata_xxxxxxxxx/libresign/java/jdk-17.0.5+8-jre/bin/java: Permission denied

Expected behavior
Java should be executable

Screenshots

Environment information (please complete the following information):

• OS: Docker (Linux 6.1.21-v8+ aarch64 - Raspberry Pi 4 Model B Rev 1.4 (4 cores))
• Browser n/a
• LibreSign Version 7.1.1 - 2023-04-12
• Nextcloud Server Version 26.0.1
• Logs n/a

[MaitreCake]

Hi,
php-ext xz is mentionned / raspberry is ARM :

Sounds like something that may be related with this thread
????

Regards,

[miqmago]

But the problem has to do with java... I've tried to execute the binnary also outside docker and the problem is the same: Permission denied.

[MaitreCake]

Not a specialist but I would check the ownership of the data folder of NC.

[miqmago]

I've tried to change permissions too, but the result is the same. Permissions are:

root@raspberrypi:/home/pi/nextcloud/mnt/data/appdata_xxxxxxxxx/libresign/java/jdk-17.0.5+8-jre/bin# ls -la
total 368
drwxr-xr-x 2 www-data www-data  4096 Apr 30 23:05 .
drwxr-xr-x 6 www-data www-data  4096 Apr 30 23:05 ..
-rwxr-xr-x 1 www-data www-data 70704 Oct 19  2022 java
-rwxr-xr-x 1 www-data www-data 70720 Oct 19  2022 jfr
-rwxr-xr-x 1 www-data www-data 70744 Oct 19  2022 jrunscript
-rwxr-xr-x 1 www-data www-data 70720 Oct 19  2022 keytool
-rwxr-xr-x 1 www-data www-data 70728 Oct 19  2022 rmiregistry

And seen from inside docker container:

pi@raspberrypi:~/nextcloud/mnt $ docker exec -it -u www-data nextcloud_app bash
www-data@0b861451b364:~/html/data/appdata_xxxxxxxxx/libresign/java/jdk-17.0.5+8-jre/bin$ ls -la
total 368
drwxr-xr-x 2 www-data www-data  4096 Apr 30 21:05 .
drwxr-xr-x 6 www-data www-data  4096 Apr 30 21:05 ..
-rwxr-xr-x 1 www-data www-data 70704 Oct 19  2022 java
-rwxr-xr-x 1 www-data www-data 70720 Oct 19  2022 jfr
-rwxr-xr-x 1 www-data www-data 70744 Oct 19  2022 jrunscript
-rwxr-xr-x 1 www-data www-data 70720 Oct 19  2022 keytool
-rwxr-xr-x 1 www-data www-data 70728 Oct 19  2022 rmiregistry

[miqmago]

[SOLVED] but any explanation would be really appreciated!

This is quite weird... My installation of nextcloud has an external hard drive mounted on /home/pi/nextcloud/mnt, so all files of nextcloud are saved on an external 4TB hdd.

In my docker-compose.yml I've defined a volume like this:

    volumes:
      - ./mnt:/var/www/html

Seems that docker cannot execute java saved on hdd so I've entered inside docker and moved java to /usr/local/lib.
Then I've created a symnlink on libresign folder and now it works fine:

docker exec -it -u0 nextcloud_app bash
cd appdata_xxxxxxxxx/libresign/java
mv jdk-17.0.5+8-jre /usr/local/lib
ln -s /usr/local/lib/jdk-17.0.5+8-jre jdk-17.0.5+8-jre

[MaitreCake]

Thanks, at least it let know that LibreSign can work on a Raspberry (on Docker)

[feefladder]

@miqmago I also had problems with files not being executable on my newly mounted hdd. Did you set the exec flag in /etc/fstab? This is also included in defaults for mount options. For me:

UUID=de02e835-197c-42c6-b929-b8d93438aad2 /media/fee/hdd  auto    defaults      0       2