Provide option --defaultinterfaces to install default /etc/network/interfaces

[grml-debootstrap.git] / grml-debootstrap

diff --git a/grml-debootstrap b/grml-debootstrap
index 66c8213..e7384f0 100755 (executable)
--- a/grml-debootstrap
+++ b/grml-debootstrap
@@ -93,6 +93,12 @@ Configuration options:
                              instead of using /etc/debootstrap/packages.
       --nopackages         Skip installation of packages defined in
                              /etc/debootstrap/packages
+      --nokernel           Skip installation of default kernel images.
+      --nointerfaces       Do not copy /etc/network/interfaces from host system
+                           to target system.
+                           (This option is automatically enabled when using --vmfile.)
+      --defaultinterfaces  Install a default /etc/network/interfaces file (enabling
+                           DHCP for eth0) instead of taking over config from host system.
       --debconf <file>     Pre-seed packages using specified pre-seed db file.
       --grmlrepos          Enable Grml's Debian repository (deb.grml.org).
       --backportrepos      Enable Debian's backports repository (backports.debian.org).
@@ -328,6 +334,9 @@ fi
 [ "$_opt_hostname" ]            && HOSTNAME=$_opt_hostname
 [ "$_opt_password" ]            && ROOTPASSWORD=$_opt_password
 [ "$_opt_nopassword" ]          && NOPASSWORD='yes'
+[ "$_opt_defaultinterfaces" ]   && DEFAULTINTERFACES="true"
+[ "$_opt_nointerfaces" ]        && NOINTERFACES="true"
+[ "$_opt_nokernel" ]            && NOKERNEL="true"
 [ "$_opt_bootappend" ]          && BOOT_APPEND=$_opt_bootappend
 [ "$_opt_grub" ]                && GRUB=$_opt_grub
 [ "$_opt_arch" ]                && ARCH=$_opt_arch
@@ -846,7 +855,6 @@ set_target_directory(){
     MKFS=''
     TUNE2FS=''
     FSCK=''
-    GRUB=''
     # make sure we normalise the path to an absolute directory name so something like:
     #  mkdir -p foo/a bar/a; (cd foo; grml-debootstrap -t a)&; (cd bar; grml-debootstrap -t a)&; wait
     # works
@@ -1148,6 +1156,7 @@ preparechroot() {
   [ -n "$MIRROR" ]              && echo "MIRROR=\"$MIRROR\""                           >> $CHROOT_VARIABLES
   [ -n "$MKFS" ]                && echo "MKFS=\"$MKFS\""                               >> $CHROOT_VARIABLES
   [ -n "$NOPASSWORD" ]          && echo "NOPASSWORD=\"true\""                          >> $CHROOT_VARIABLES
+  [ -n "$NOKERNEL" ]            && echo "NOKERNEL=\"true\""                            >> $CHROOT_VARIABLES
   [ -n "$PACKAGES" ]            && echo "PACKAGES=\"$PACKAGES\""                       >> $CHROOT_VARIABLES
   [ -n "$PRE_SCRIPTS" ]         && echo "PRE_SCRIPTS=\"$PRE_SCRIPTS\""                 >> $CHROOT_VARIABLES
   [ -n "$RECONFIGURE" ]         && echo "RECONFIGURE=\"$RECONFIGURE\""                 >> $CHROOT_VARIABLES
@@ -1224,10 +1233,38 @@ preparechroot() {
   [ -d $CONFFILES/usr   ] && cp $VERBOSE -a -L $CONFFILES/usr/*   $MNTPOINT/usr/
   [ -d $CONFFILES/var   ] && cp $VERBOSE -a -L $CONFFILES/var/*   $MNTPOINT/var/
 
-  # copy local network setup to chroot
-  if [ -r /etc/network/interfaces -a ! -r "${MNTPOINT}"/etc/network/interfaces ] ; then
-     [ -d $MNTPOINT/etc/network ] || mkdir $MNTPOINT/etc/network
-     cp $VERBOSE /etc/network/interfaces $MNTPOINT/etc/network/interfaces
+  # network setup
+  DEFAULT_INTERFACES="# /etc/network/interfaces - generated by grml-debootstrap
+
+# Include files from /etc/network/interfaces.d when using
+# ifupdown v0.7.44 or newer:
+#source-directory /etc/network/interfaces.d
+
+auto lo
+iface lo inet loopback
+
+allow-hotplug eth0
+iface eth0 inet dhcp
+"
+
+  if [ -n "$NOINTERFACES" ] ; then
+    einfo "Not installing /etc/network/interfaces as requested via --nointerfaces option" ; eend 0
+  elif [ -n "$DEFAULT_INTERFACES" ] ; then
+    einfo "Installing default /etc/network/interfaces as requested via --defaultinterfaces options."
+    echo "$DEFAULT_INTERFACES" > "${MNTPOINT}/etc/network/interfaces"
+    eend $?
+  elif [ -n "$VIRTUAL" ] ; then
+    einfo "Setting up Virtual Machine, installing default /etc/network/interfaces"
+    echo "$DEFAULT_INTERFACES" > "${MNTPOINT}/etc/network/interfaces"
+    eend $?
+  elif [ -r /etc/network/interfaces ] ; then
+    einfo "Copying /etc/network/interfaces from host to target system"
+    cp $VERBOSE /etc/network/interfaces "${MNTPOINT}/etc/network/interfaces"
+    eend $?
+  else
+    ewarn "Couldn't read /etc/network/interfaces, installing default /etc/network/interfaces"
+    echo "$DEFAULT_INTERFACES" > "${MNTPOINT}/etc/network/interfaces"
+    eend $?
   fi
 
   # install config file providing some example entries