Change the oom_score_adj for a sandbox

[rusty-snake]

Describe the solution you'd like

choom 123

in the profile will write 123 into /proc/<pid>/oom_score_adj

Additional context

• man 1 choom and man 5 proc
• This should be done unprivileged because writing negative numbers is a privileged task.

[reinerh]

I like the idea!

* This should be done unprivileged because writing negative numbers is a privileged task.

(except the jail is started by root, similar to --nice)

[netblue30]

Very good idea, try it out!

[rusty-snake]

undefined reference to `oom_set'

@netblue30 looks like you forgot to commit oom_set.

Shell completions and vim syntax files need to be updated as well. And a profile command would be nice too.

[netblue30]

Fixed now, I forgot to check in a new file