From 6c597252744ccc9ba7608188a41a3006e97b20b1 Mon Sep 17 00:00:00 2001
From: Michael Prokop <mika@grml.org>
Date: Sat, 19 Apr 2014 01:38:14 +0200
Subject: [PATCH] Support --nokernel option to skip installation of default
 kernel images

As needed in a $customer environment (not to be named [yet]).
---
 chroot-script          | 5 +++++
 cmdlineopts.clp        | 5 ++++-
 grml-debootstrap       | 3 +++
 grml-debootstrap.8.txt | 7 +++++++
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/chroot-script b/chroot-script
index 677f319..ce3f624 100755
--- a/chroot-script
+++ b/chroot-script
@@ -311,6 +311,11 @@ get_kernel_version() {
 
 # install kernel packages {{{
 kernel() {
+  if [ -n "$NOKERNEL" ] ; then
+    echo "Skipping installation of kernel packages as requested via --nokernel"
+    return 0
+  fi
+
   $APTUPDATE
   KVER=$(get_kernel_version)
   if [ -n "$KVER" ] ; then
diff --git a/cmdlineopts.clp b/cmdlineopts.clp
index 9c6bafa..dd1e933 100644
--- a/cmdlineopts.clp
+++ b/cmdlineopts.clp
@@ -12,7 +12,7 @@
 # should be handled in the main script, where it belongs.
 ################################################################################
 
-CMDLINE_OPTS=mirror:,iso:,release:,target:,mntpoint:,debopt:,interactive,nodebootstrap,nointerfaces,nopackages,filesystem:,config:,confdir:,packages:,chroot-scripts:,scripts:,pre-scripts:,debconf:,vmfile,vmsize:,keep_src_list,hostname:,password:,nopassword,grmlrepos,backportrepos,bootappend:,grub:,arch:,insecure,verbose,help,version,force,debug
+CMDLINE_OPTS=mirror:,iso:,release:,target:,mntpoint:,debopt:,interactive,nodebootstrap,nointerfaces,nokernel,nopackages,filesystem:,config:,confdir:,packages:,chroot-scripts:,scripts:,pre-scripts:,debconf:,vmfile,vmsize:,keep_src_list,hostname:,password:,nopassword,grmlrepos,backportrepos,bootappend:,grub:,arch:,insecure,verbose,help,version,force,debug
 
 _opt_temp=`getopt --name grml-debootstrap -o +m:i:r:t:p:c:d:vhV --long \
     $CMDLINE_OPTS -- "$@"`
@@ -110,6 +110,9 @@ while :; do
   --nointerfaces)      # Skip installation of /etc/network/interfaces
     _opt_nointerfaces=T
     ;;
+  --nokernel)          # Skip installation of default kernel images
+    _opt_nokernel=T
+    ;;
   --nopassword)        # Skip password dialog
     _opt_nopassword=T
     ;;
diff --git a/grml-debootstrap b/grml-debootstrap
index 493ed7a..3cccbca 100755
--- a/grml-debootstrap
+++ b/grml-debootstrap
@@ -96,6 +96,7 @@ Configuration options:
       --nointerfaces       Do not copy /etc/network/interfaces from host system
                            to target system.
                            (This option is automatically enabled when using --vmfile.)
+      --nokernel           Skip installation of default kernel images.
       --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).
@@ -332,6 +333,7 @@ fi
 [ "$_opt_password" ]            && ROOTPASSWORD=$_opt_password
 [ "$_opt_nopassword" ]          && NOPASSWORD='yes'
 [ "$_opt_nointerfaces" ]        && NOINTERFACES="true"
+[ "$_opt_nokernel" ]            && NOKERNEL="true"
 [ "$_opt_bootappend" ]          && BOOT_APPEND=$_opt_bootappend
 [ "$_opt_grub" ]                && GRUB=$_opt_grub
 [ "$_opt_arch" ]                && ARCH=$_opt_arch
@@ -1152,6 +1154,7 @@ preparechroot() {
   [ -n "$MKFS" ]                && echo "MKFS=\"$MKFS\""                               >> $CHROOT_VARIABLES
   [ -n "$NOPASSWORD" ]          && echo "NOPASSWORD=\"true\""                          >> $CHROOT_VARIABLES
   [ -n "$NOINTERFACES" ]        && echo "NOINTERFACES=\"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
diff --git a/grml-debootstrap.8.txt b/grml-debootstrap.8.txt
index 9633864..334843d 100644
--- a/grml-debootstrap.8.txt
+++ b/grml-debootstrap.8.txt
@@ -137,6 +137,13 @@ Options and environment variables
     Do not copy /etc/network/interfaces from host system to the target.
     This option is automatically enabled when using --vmfile.
 
+*--nokernel*::
+
+    Skip installation of default kernel images. This option might be
+    interesting for you if you want a Debian system which doesn't
+    need to provide regular boot, e.g. a system which provides
+    ISOs for booting via GRUB using grml-rescueboot.
+
 *--nopackages*::
 
     Skip installation of packages defined in /etc/debootstrap/packages.
-- 
2.1.4