1 files changed, 136 insertions, 0 deletions
diff --git a/mkrootfs b/mkrootfs
new file mode 100755
index 0000000..e8941b0
--- /dev/null
+++ b/mkrootfs
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+#!/bin/bash
+set -e
+
+# Directory in which the file system will be built
+#
+ROOTFS=$(pwd)/cb5-rootfs
+
+# Debian release
+#
+RELEASE=stretch
+
+# Host name to be used by machine
+#
+HOSTNAME=cb5
+
+# SSH to log in as root
+#
+SSH_KEY="$HOME/.ssh/id_rsa.pub"
+
+print_usage() {
+    cat 1>&2 <<EOF
+Usage: $0 [options] rootfs-directory
+Create a debian root filesystem for the cubieboard5.
+The password for the root account will be set to 'guest', unless an ssh key is
+specified, in which case the account will be locked.
+
+Options:
+  --hostname=<$HOSTNAME>   Use a given hostname for the device.
+  --ssh-key=<$SSH_KEY>	   Add the given SSH key to root's authorized_keys file. When this option is provided, root's account will be locked.
+  --release=<$RELEASE>     Create a root filesystem for the given debian release.
+EOF
+}
+
+# Process options
+#
+while [ $# -gt 1 ]
+do
+    case "$1" in
+	--help|-h)
+	    print_usage
+	    exit 0
+	    ;;	
+	--hostname=*)
+	    HOSTNAME="${1#*=}"
+	    ;;
+	--release=*)
+	    RELEASE="${1#*=}"
+	    ;;
+	--ssh-key=*)
+	    SSH_KEY="${1#*=}"
+	    ;;
+	*)
+	    echo "Unknown option '$1'" 1>&2
+	    exit 1
+    esac
+    shift
+done
+
+# Process last argument, the root file system location
+if [ -z "$1" ] || [ "$1" = -h ] || [ "$1" = --help ]; then
+    print_usage
+    exit 1
+fi
+if [ "$EUID" -ne 0 ]; then
+    echo "This must be run as root." 1>&2
+    exit 1
+fi
+export ROOTFS="$1"
+
+export RELEASE
+export HOSTNAME
+export SSH_KEY
+
+# Run a command in the root file system
+#
+chroot_exec() {
+    # Exec command in chroot
+    LANG=C LC_ALL=C DEBIAN_FRONTEND=noninteractive chroot ${ROOTFS} /bin/sh -c "$*"
+}
+export -f chroot_exec
+
+# Unmount and remove any temporary files
+#
+cleanup() {
+    set +e
+
+    # Identify and kill all processes still using files
+    echo "Killing processes using mount point" 1>&2
+    fuser -k "${ROOTFS}"
+    sleep 3
+    fuser -9 -k -v "${ROOTFS}"
+
+    # Clean up all temporary mount points
+    echo "Removing temporary mount points" 1>&2
+    umount -l "${ROOTFS}/proc" 2> /dev/null
+    umount -l "${ROOTFS}/sys" 2> /dev/null
+    umount -l "${ROOTFS}/dev/pts" 2> /dev/null
+    umount -l "${ROOTFS}/dev" 2> /dev/null
+    trap - 0 1 2 3 6
+}
+trap cleanup 0 1 2 3 6
+
+# Bootstrap initial file system
+#
+echo "Creating rootfs" 1>&2
+# proxy is set to use apt-cacher-ng
+http_proxy="localhost:3142" qemu-debootstrap \
+ 	  --verbose \
+      	  --include=linux-image-armmp-lpae,locales,flash-kernel,sunxi-tools,firmware-linux-free,u-boot-tools \
+      	  --arch=armhf \
+      	  "$RELEASE" \
+      	  "$ROOTFS" \
+      	  http://httpredir.debian.org/debian
+
+# Prepare filesystem to be chrooted
+#
+echo "Creating temporary system mount points in rootfs" 1>&2
+mount -t proc chproc "$ROOTFS/proc"
+mount -t sysfs chsys "$ROOTFS/sys"
+mount -t devtmpfs chdev "$ROOTFS/dev"
+mount -t devpts chpts "$ROOTFS/dev/pts"
+echo "Configuring rootfs" 1>&2
+chroot_exec dpkg --configure -a
+
+# Run setup scripts
+#
+echo "Running setup scripts" 1>&2
+dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+for script in "$dir"/mkrootfs.d/*.sh; do
+    echo "Running $script" 1>&2
+    bash "$script"
+done
+echo "Completed setup scripts" 1>&2
+
+cleanup
+echo "Successfully created rootfs" 1>&2