X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;ds=sidebyside;f=fai%2Fconfig%2Fscripts%2FDEBIAN%2F40-misc;h=e160cbb06176200ab54f4723db70b9425bb3df67;hb=ac4e0089e245c96a388b8fcdd92fc05da3399694;hp=8308bbe33dae7b662437697b6d7959cfc11d5ce4;hpb=056eb4e90e13b2d8f7cbb8c3b875f35bf0fa207e;p=automated-distro-installer

diff --git a/fai/config/scripts/DEBIAN/40-misc b/fai/config/scripts/DEBIAN/40-misc
index 8308bbe..e160cbb 100755
--- a/fai/config/scripts/DEBIAN/40-misc
+++ b/fai/config/scripts/DEBIAN/40-misc
@@ -3,6 +3,22 @@
 # (c) Thomas Lange, 2001-2016, lange@debian.org
 # (c) Michael Goetze, 2010-2011, mgoetze@mgoetze.net
 
+
+# on ubuntu 16.04 which didn't run this script, some things which didn't
+# apply:
+# /etc/dpkg/dpkg.cfg.d/fai didn't exist,
+# machine-id was already setup.
+
+# on that system and a debian stretch system, after reboot,
+# some things done here don't seem to persist:
+# some thin/etc/mtab is symlink somewhere else,
+# and mailname is $HOSTNAME.lan
+
+# the adjtime thing is to support changing the system clock
+# from representing UTC (the default) to localtime (windows default).
+
+# afaik, the only useful thing here for me is setting /etc/hostname
+
 error=0; trap 'error=$(($?>$error?$?:$error))' ERR # save maximum error code
 
 # a list of modules which are loaded at boot time
@@ -28,7 +44,12 @@ elif [ -f $target/lib/systemd/system/getty@.service ]; then
     sed -i -e 's#sbin/agetty --noclear#sbin/agetty -f /etc/issue.linuxlogo --noclear#' $target/lib/systemd/system/getty@.service
 fi
 
-if [ ! -f $target/etc/machine-id -a -f $target/bin/systemd-machine-id-setup ]; then
+# make sure a machine-id exists
+if [ ! -f $target/etc/machine-id ]; then
+    > $target/etc/machine-id
+fi
+# recreate machine-id if the file is empty
+if [ X"$(stat -c '%s' $target/etc/machine-id 2>/dev/null)"  = X0 -a -f /bin/systemd-machine-id-setup ]; then
     $ROOTCMD systemd-machine-id-setup
 fi