runcommand.sh: does not capture logs when `/dev/shm` is unavailable or restricted

[twojstaryzdomu]

/dev/shm isn't traditionally the location to dump data to. On some environments it may not be available (it is after all an in-memory shared location). Please enable logs to be written elsewhere (/tmp) if /dev/shm isn't available.

[cmitu]

This is by design - a memory backed location was chosen in order to prevent writing to the sdcard on the Pi (the primary usage for RetroPie).
From the systems that RetroPie supports, is there a distro where /dev/shm is not available and writable ?

[twojstaryzdomu]

From the systems that RetroPie supports, is there a distro where /dev/shm is not available and writable?

I do not question the intent. It's all very well and in fact what most users want, not to write to flash too often.

I question the code - do you need to hard-code /dev/shm every time in your script? Why not define it via a variable and set it at the top of the script, enabing an easy change to a different location.

Let me give you another scenario: my game crashes the box and I would like it to capture output to disk. Nothing you write to memory would be preserved across crashes. Or memory saving - /dev/shm takes precious memory on environments where RAM is non-expandable and is a luxury. Do you understand both cases?

For both cases, here's what could be done to improve runcommand.sh: #3555.

[joolswills]

I think it would just be simpler to allow this to be set in the runcommand configuration file - your change is just hardcoding more locations. I don't think it's a big issue though. I can make a suitable change.

[twojstaryzdomu]

I think it would just be simpler to allow this to be set in the runcommand configuration file - your change is just hardcoding more locations. I don't think it's a big issue though. I can make a suitable change.

Very well but you haven't got rid of the hard-coded /dev/shm that are all over the place in runcommand.sh.

[joolswills]

I missed two references which I will fix.

[twojstaryzdomu]

I missed two references which I will fix.

Thanks! Please see #3557, I think it's only fair that it's a value that a user may modify easily via the menu like the others.