petitboot: Enable user separation
Turn on support for unprivileged user accounts in the Petitboot
environment, including setting up a basic non-root user and group.
The implementation also requires using the agetty package rather than
the busybox getty utility, calling the initial pb-console helper on
login rather than directly, and moving some shell init logic from
Petitboot and into a .shrc script.
If no root password is configured in NVRAM or at runtime then this has
no effect aside from some nicer shell behaviour. Once a password is
configured then most actions in Petitboot will require this password and
the shell runs as a normal user.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
diff --git a/openpower/overlay/etc/sudoers b/openpower/overlay/etc/sudoers
new file mode 100644
index 0000000..fcaf196
--- /dev/null
+++ b/openpower/overlay/etc/sudoers
@@ -0,0 +1,4 @@
+root ALL=(ALL) ALL
+%wheel ALL=(ALL) ALL
+Defaults targetpw
+Defaults timestamp_timeout=1