Sharing tmp directory across multiple commands in a snap app

[Rajendra Dendukuri]

Here is an application which has a central daemon app and multiple commands. These commands are exposed as commands to user and connect to the central daemon app.

Assume that central daemon creates unix domain sockets in /tmp folder and expects the commands to read and write to them. When we start porting this application to Snappy it is observed that /tmp seen by commands is not same as that seen by central daemon app. Please note that all the commands and central daemon is being packaged into a single SNAP.

Given that we do not want to change the /tmp handling of application, does Snappy provide an automatic way to handle it.

I also observed that for each invocation of a command a throw away tmp directory is created. There is no cleanup of them and it tends to grow overtime.

http://pastebin.com/vPryWH9V

I am using xenial ubuntu-core daily image dated 3/1/2016

[Loïc Minier (lool)]

Hi Jamie,
would you think this is fixable for 16.04?
Thanks,
- Loïc