Hi, when installing 'throwaway' VMs (manually, not always using autoinstall for $REASONS) i've often found myself having to do right after the install: install -d -m 700 /root/.ssh install -m 600 /dev/null /root/.ssh/authorized_keys (or touch /root/.ssh/authorized_keys && chmod 600 /root/.ssh/authorized_keys, ymmv)
those are present in /etc/skel for "real" users, so why not creating them for the root account ? install.sub also creates /mnt/root/.ssh when using autoinstall and giving an ssh pubkey, so that'll be one less step to do there. We advise ppl to set prohibit-password for PermitRootLogin, so why not make it easier to use it ? This ways, the correct modes are set.. i often fat-fingered this, to see sshd complaining (rightly!) about bad modes on .ssh/authorized_keys. Conceptual (untested) diff below for discussion, i'll build a release with it depending on the feedback/opinions.. Landry Index: Makefile =================================================================== RCS file: /cvs/src/etc/Makefile,v retrieving revision 1.449 diff -u -r1.449 Makefile --- Makefile 2 Feb 2017 21:35:05 -0000 1.449 +++ Makefile 5 Feb 2017 09:34:58 -0000 @@ -110,6 +110,8 @@ ${DESTDIR}/root/.Xdefaults; \ ${INSTALL} -c -o root -g wheel -m 644 dot.cvsrc \ ${DESTDIR}/root/.cvsrc; \ + ${INSTALL} -c -o root -g wheel -m 600 /dev/null \ + ${DESTDIR}/root/.ssh/authorized_keys rm -f ${DESTDIR}/.cshrc ${DESTDIR}/.profile; \ ${INSTALL} -c -o root -g wheel -m 644 dot.cshrc \ ${DESTDIR}/.cshrc; \ Index: mtree/4.4BSD.dist =================================================================== RCS file: /cvs/src/etc/mtree/4.4BSD.dist,v retrieving revision 1.293 diff -u -r1.293 4.4BSD.dist --- mtree/4.4BSD.dist 27 Dec 2016 09:17:52 -0000 1.293 +++ mtree/4.4BSD.dist 5 Feb 2017 09:34:58 -0000 @@ -118,6 +118,8 @@ mnt .. root mode=0700 + .ssh uname=root mode=0700 + .. .. sbin ..