[Buildroot] [PATCH 2/2] fs: clean the volatile /run and /tmp directories

Norbert Lange nolange79 at gmail.com
Sun Jun 7 18:41:33 UTC 2020


Am So., 7. Juni 2020 um 10:47 Uhr schrieb Thomas Petazzoni
<thomas.petazzoni at bootlin.com>:
>
> On Sun, 7 Jun 2020 00:57:23 +0200
> Norbert Lange <nolange79 at gmail.com> wrote:
>
> > > However, I'm not sure if removing all what they contain is the right
> > > approach. Shouldn't we avoid creating things in /tmp and /run in the
> > > first place ?
> >
> > Yeah we should avoid creating stuff there, but it's sometimes hard to do.
> > One example is defining a user with home dir in /run, mkusers will
> > then create a dir there
> > (pretty late to clear it up otherwise)
>
> But our skeleton has a fstab that always mounts a tmpfs filesystem on
> /run, so how can it make sense for mkusers to create a home directory
> in /run ?

Think of system users, where the "home" is usually non-persistent or
just some sort of jail.
For ex. my openssh patch sets the sshd user's home to /run/sshd - A
directory that's automatically
created when the service starts and deleted when it stops.

>
> Thomas
> --
> Thomas Petazzoni, CTO, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com

Norbert


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