From f13fca1705c41ee32a26d87588bee44a59c7d82a Mon Sep 17 00:00:00 2001
From: Chris Landa <stylesuxx@gmail.com>
Date: Sat, 5 Mar 2016 14:01:44 +0100
Subject: Added functionality to run custom scripts after base bootstrap

---
 README.md         | 3 +++
 rpi2-gen-image.sh | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/README.md b/README.md
index 987ce62..0c020b9 100644
--- a/README.md
+++ b/README.md
@@ -92,6 +92,9 @@ Enable iptables IPv4/IPv6 firewall. Simplified ruleset: Allow all outgoing conne
 ##### `ENABLE_HARDNET`=false
 Enable IPv4/IPv6 network stack hardening settings.
 
+##### `CHROOT_SCRIPTS`=""
+Path to a directory with scripts that should be run in the chroot before the image is finally built. Every executable file in this direcory is run in lexicographical order.
+
 ## Logging of the bootstrapping process
 All information related to the bootstrapping process and the commands executed by the `rpi2-gen-image.sh` script can easily be saved into a logfile. The common shell command `script` can be used for this purpose:
 
diff --git a/rpi2-gen-image.sh b/rpi2-gen-image.sh
index ff677d2..ebf4e82 100755
--- a/rpi2-gen-image.sh
+++ b/rpi2-gen-image.sh
@@ -74,6 +74,7 @@ ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}
 
 # Image chroot path
 R=${BUILDDIR}/chroot
+CHROOT_SCRIPTS=${CHROOT_SCRIPTS:=""}
 
 # Packages required for bootstrapping
 REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git-core"
@@ -813,6 +814,13 @@ LANG=C chroot $R apt-get -y clean
 LANG=C chroot $R apt-get -y autoclean
 LANG=C chroot $R apt-get -y autoremove
 
+# Invoke custom scripts
+if [ -n "${CHROOT_SCRIPTS}" ]; then
+  cp -r "${CHROOT_SCRIPTS}" "${R}/chroot_scripts"
+  LANG=C chroot $R bash -c 'for SCRIPT in /chroot_scripts/*; do if [ -f $SCRIPT -a -x $SCRIPT ]; then $SCRIPT; fi done;'
+  rm -rf "${R}/chroot_scripts"
+fi
+
 # Unmount mounted filesystems
 umount -l $R/proc
 umount -l $R/sys
-- 
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