1 files changed, 126 insertions, 0 deletions
diff --git a/mkimage-arch.sh b/mkimage-arch.sh
new file mode 100644
index 0000000..f751209
--- /dev/null
+++ b/mkimage-arch.sh
@@ -0,0 +1,126 @@
+#!/usr/bin/env bash
+# Generate a minimal filesystem for archlinux and load it into the local
+# docker as "archlinux"
+# requires root
+set -e
+
+hash pacstrap &>/dev/null || {
+	echo "Could not find pacstrap. Run pacman -S arch-install-scripts"
+	exit 1
+}
+
+hash expect &>/dev/null || {
+	echo "Could not find expect. Run pacman -S expect"
+	exit 1
+}
+
+
+export LANG="C.UTF-8"
+
+ROOTFS=$(mktemp -d ${TMPDIR:-/var/tmp}/rootfs-archlinux-XXXXXXXXXX)
+chmod 755 $ROOTFS
+
+# packages to ignore for space savings
+PKGIGNORE=(
+    cryptsetup
+    device-mapper
+    dhcpcd
+    iproute2
+    jfsutils
+    linux
+    lvm2
+    man-db
+    man-pages
+    mdadm
+    nano
+    netctl
+    openresolv
+    pciutils
+    pcmciautils
+    reiserfsprogs
+    s-nail
+    systemd-sysvcompat
+    usbutils
+    vi
+    xfsprogs
+)
+IFS=','
+PKGIGNORE="${PKGIGNORE[*]}"
+unset IFS
+
+arch="$(uname -m)"
+case "$arch" in
+	armv*)
+		if pacman -Q archlinuxarm-keyring >/dev/null 2>&1; then
+			pacman-key --init
+			pacman-key --populate archlinuxarm
+		else
+			echo "Could not find archlinuxarm-keyring. Please, install it and run pacman-key --populate archlinuxarm"
+			exit 1
+		fi
+		PACMAN_CONF=$(mktemp ${TMPDIR:-/var/tmp}/pacman-conf-archlinux-XXXXXXXXX)
+		version="$(echo $arch | cut -c 5)"
+		sed "s/Architecture = armv/Architecture = armv${version}h/g" './mkimage-archarm-pacman.conf' > "${PACMAN_CONF}"
+		PACMAN_MIRRORLIST='Server = http://mirror.archlinuxarm.org/$arch/$repo'
+		PACMAN_EXTRA_PKGS='archlinuxarm-keyring'
+		EXPECT_TIMEOUT=1800 # Most armv* based devices can be very slow (e.g. RPiv1)
+		ARCH_KEYRING=archlinuxarm
+		DOCKER_IMAGE_NAME="armv${version}h/archlinux"
+		;;
+	*)
+		PACMAN_CONF='./mkimage-arch-pacman.conf'
+		PACMAN_MIRRORLIST='Server = https://jpn.mirror.archlinux32.org/$arch/$repo'
+		PACMAN_EXTRA_PKGS=''
+		EXPECT_TIMEOUT=60
+		ARCH_KEYRING=archlinux
+		DOCKER_IMAGE_NAME=archlinux
+		;;
+esac
+
+export PACMAN_MIRRORLIST
+
+expect <<EOF
+	set send_slow {1 .1}
+	proc send {ignore arg} {
+		sleep .1
+		exp_send -s -- \$arg
+	}
+	set timeout $EXPECT_TIMEOUT
+
+	spawn pacstrap -C $PACMAN_CONF -c -d -G -i $ROOTFS base haveged $PACMAN_EXTRA_PKGS --ignore $PKGIGNORE
+	expect {
+		-exact "anyway? \[Y/n\] " { send -- "n\r"; exp_continue }
+		-exact "(default=all): " { send -- "\r"; exp_continue }
+		-exact "installation? \[Y/n\]" { send -- "y\r"; exp_continue }
+		-exact "delete it? \[Y/n\]" { send -- "y\r"; exp_continue }
+	}
+EOF
+
+arch-chroot $ROOTFS /bin/sh -c 'rm -r /usr/share/man/*'
+arch-chroot $ROOTFS /bin/sh -c "haveged -w 1024; pacman-key --init; pkill haveged; pacman -Rs --noconfirm haveged; pacman-key --populate $ARCH_KEYRING; pkill gpg-agent"
+arch-chroot $ROOTFS /bin/sh -c "ln -s /usr/share/zoneinfo/UTC /etc/localtime"
+echo 'en_US.UTF-8 UTF-8' > $ROOTFS/etc/locale.gen
+arch-chroot $ROOTFS locale-gen
+arch-chroot $ROOTFS /bin/sh -c 'echo $PACMAN_MIRRORLIST > /etc/pacman.d/mirrorlist'
+
+# udev doesn't work in containers, rebuild /dev
+DEV=$ROOTFS/dev
+rm -rf $DEV
+mkdir -p $DEV
+mknod -m 666 $DEV/null c 1 3
+mknod -m 666 $DEV/zero c 1 5
+mknod -m 666 $DEV/random c 1 8
+mknod -m 666 $DEV/urandom c 1 9
+mkdir -m 755 $DEV/pts
+mkdir -m 1777 $DEV/shm
+mknod -m 666 $DEV/tty c 5 0
+mknod -m 600 $DEV/console c 5 1
+mknod -m 666 $DEV/tty0 c 4 0
+mknod -m 666 $DEV/full c 1 7
+mknod -m 600 $DEV/initctl p
+mknod -m 666 $DEV/ptmx c 5 2
+ln -sf /proc/self/fd $DEV/fd
+
+tar --numeric-owner --xattrs --acls -C $ROOTFS -c . | docker import - $DOCKER_IMAGE_NAME
+docker run --rm -t $DOCKER_IMAGE_NAME echo Success.
+rm -rf $ROOTFS