Received file location invalid for folders above home directory

[Grumium]

Platform

Linux Mint 20 Ulyana
Warpinator 1.0.6+ulyana

Issue

Locations for received files above the user's home directory ~ are not recognized upon system startup.
Warpinator set to start automatically shows "invalid save location".

However, locations outside of ~ can be selected manually after startup and are valid throughout the active session.

[mtwebster]

Can you be a bit more detailed? Do you mean system locations (outside of /home/) are invalid?

Is this location writable at startup?

[Grumium]

Sure. If I set the Location for received files to any directory residing at or below /home/*user*/ these locations are valid even after system reboot. In contrary, whenever I choose a directory like /mnt/something or /media/something_else Warpinator throws the error "invalid save location" after reboot, indicating that it is either missing permissions or cannot find the corresponding directory. However, I can manually select the directory again choosing "Other..." -> "+ Other Locations", which works until I reboot.

[Grumium]

Okay, chmod a+rwx solved it. Sorry!
I am wondering why Warpinator does not complain about missing permissions when I set the directory manually at first? Warpinator does not run as root.

[mtwebster]

That is weird - do you remember its permissions before you changed it? It'd be better if it worked with normal permissions - a+rwx scares me :)

[Grumium]

Yes, 0755 rwx-rx-rx is not working, 0777 rwx-rwx-rwx works, even without a. I can also take ownership of the directory as the local user to solve the issue.

[mtwebster]

Oh then all of this makes sense, if you didn't own the folder. I would personally go with owning the folder and back to 755 before opening it for anyone, though in practice this probably won't matter for you.

Regardless I think this can be closed. I may reword the error page to mention permissions/ownership more explicitly.