[Buildroot] [PATCH 1/1] openssh: replace individual ssh-keygen calls with a single call

Danomi Manchego danomimanchego123 at gmail.com
Mon Aug 4 14:28:08 UTC 2014


On Mon, Aug 4, 2014 at 4:24 AM, Thomas Petazzoni
<thomas.petazzoni at free-electrons.com> wrote:
> Dear Danomi Manchego,
> On Sun, 3 Aug 2014 09:25:13 -0400, Danomi Manchego wrote:
>> I think this issue is not limited to openssh - there's other things
>> that want to occasionally save stuff to /etc, /var, even /root (e.g.
>> gstreamer plugins cache).  I suppose that efforts could be made to try
>> to patch/configure these locations to all be in one place (/var ?),
>> but that still assumes a writable directory.  So, unless we direct all
>> attempts to save state to a tmpfs, I think it always come back to
>> being the user's responsibility.
>> So for now I'm content to keep openssh as it is, rather than hunt down
>> all the places that might try to write to etc (, var, $HOME, ...).
> Buildroot is normally supposed to support a read-only root filesystem,
> and there are already several things being done to make this possible:
>  * /etc/resolv.conf is a symbolic link to /tmp/resolv.conf
>  * Most of the /var/<foo> directories are symbolic links to /tmp.
>    Only /var/lib is not.
>  * /tmp is mounted as tmpfs, so that it's read/write even if the rootfs
>    is read only.

So - should the openssh.mk be making symlinks of all the key files to
/tmp/$FILE?  That re-introduces the maintenance burden, but I'll make
a patch along those lines if there's interest.

Danomi -

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