1 files changed, 184 insertions, 0 deletions
diff --git a/mkarchroot b/mkarchroot
new file mode 100755
index 0000000..58065b3
--- /dev/null
+++ b/mkarchroot
@@ -0,0 +1,184 @@
+#!/bin/bash
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+FORCE="n"
+RUN=""
+
+working_dir=""
+
+APPNAME=$(basename "${0}")
+
+# usage: usage <exitvalue>
+usage ()
+{
+    echo "usage ${APPNAME} [options] working-dir [package-list | app]"
+    echo " options:"
+    echo "    -r <app>      Run 'app' within the context of the chroot"
+    echo "    -u            Update the chroot via pacman"
+    echo "    -f            Force overwrite of files in the working-dir"
+    echo "    -C <file>     location of a pacman config file"
+    echo "    -M <file>     location of a makepkg config file"
+    echo "    -h            This message"
+    exit $1
+}
+
+while getopts 'r:ufhC:M:' arg; do
+    case "${arg}" in
+        r) RUN="$OPTARG" ;;
+        u) RUN="pacman -Syu" ;;
+        f) FORCE="y" ;;
+        C) pac_conf="$OPTARG" ;;
+        M) makepkg_conf="$OPTARG" ;;
+        h|?) usage 0 ;;
+        *) echo "invalid argument '${arg}'"; usage 1 ;;
+    esac
+done
+
+if [ "$EUID" != "0" ]; then
+    echo "error: this script must be run as root."
+    exit 1
+fi
+
+shift $(($OPTIND - 1))
+
+if [ "$RUN" = "" -a $# -lt 2 ]; then
+    echo "you must specify a directory and one or more packages"
+    usage 1
+elif [ $# -lt 1 ]; then
+    echo "you must specify a directory"
+    usage 1
+fi
+
+working_dir="$(readlink -f ${1})"
+shift 1
+
+[ "${working_dir}" = "" ] && echo "error: please specify a working directory" && usage 1
+
+# {{{ functions 
+
+chroot_mount ()
+{
+    echo "mounting sysfs : /sys"
+    [ -e "${working_dir}/sys" ] || mkdir "${working_dir}/sys"
+    mount -t sysfs sysfs "${working_dir}/sys"
+
+    echo "mounting procfs : /proc"
+    [ -e "${working_dir}/proc" ] || mkdir "${working_dir}/proc"
+    mount -t proc proc "${working_dir}/proc"
+
+    echo "binding device nodes : /dev"
+    [ -e "${working_dir}/dev" ] || mkdir "${working_dir}/dev"
+    mount -o bind /dev "${working_dir}/dev"
+
+    echo "binding pacman cache : /var/cache/pacman"
+    [ -e "${working_dir}/var/cache/pacman" ] || mkdir -p "${working_dir}/var/cache/pacman"
+    mount -o bind /var/cache/pacman "${working_dir}/var/cache/pacman"
+
+    trap 'chroot_umount' 0 1 2 15
+}
+
+copy_hostconf ()
+{
+    echo "copying mtab : /etc/mtab"
+    cp /etc/mtab "${working_dir}/etc/mtab"
+
+    echo "copying resolv.conf : /etc/resolv.conf"
+    cp /etc/resolv.conf "${working_dir}/etc/resolv.conf"
+
+}
+
+chroot_umount ()
+{
+    echo "cleaning up mounts"
+    umount "${working_dir}/proc"
+    umount "${working_dir}/sys"
+    umount "${working_dir}/dev"
+    umount "${working_dir}/var/cache/pacman"
+}
+# }}}
+
+if [ "$RUN" != "" ]; then
+    # run chroot {{{
+    #Sanity check
+    if [ ! -f "${working_dir}/.arch-chroot" ]; then
+        echo "error: '${working_dir}' does not appear to be a Arch chroot"
+        echo "  please build the image using mkarchroot"
+        exit 1
+    fi
+
+    chroot_mount
+    copy_hostconf
+
+    echo "starting chroot ($RUN)"
+    chroot "${working_dir}" ${RUN}
+
+    # }}}
+else
+    # {{{ build chroot
+    if [ -e "${working_dir}" -a "${FORCE}" = "n" ]; then
+        echo "error: working dir '${working_dir}' already exists - try using -f"
+        exit 1
+    fi
+
+    mkdir -p "${working_dir}/var/lib/pacman/"
+    mkdir -p "${working_dir}/etc/"
+
+    chroot_mount
+
+    pacargs="--noconfirm -v " #--noprogressbar -v
+    pacargs="$pacargs --root=${working_dir}"
+    # pacman takes these as relative to the given root
+    pacargs="$pacargs --cachedir=/var/cache/pacman/pkg"
+    if [ "$pac_conf" != "" ]; then
+        pacargs="$pacargs --config=${pac_conf}"
+    fi
+
+    if [ $# -eq 0 ]; then
+        echo "no packages to install"
+    else
+        echo "installing packages:"
+        for i in $@; do echo -e "\t$i"; done
+
+        op="-Sy"
+        if [ "$FORCE" = "y" ]; then
+            op="${op}f"
+        fi
+        if ! pacman ${op} ${pacargs} $@; then
+            echo "error: failed to install all packages"
+            exit 1
+        fi
+    fi
+
+    if [ -d "${working_dir}/lib/modules" ]; then
+        echo "running ldconfig"
+        ldconfig -r "${working_dir}"
+    fi
+
+    if [ "$pac_conf" != "" ]; then
+        echo "installing custom pacman.conf"
+        cp ${pac_conf} ${working_dir}/etc/pacman.conf
+    fi
+
+    if [ "$makepkg_conf" != "" ]; then
+        echo "installing custom makepkg.conf"
+        cp ${makepkg_conf} ${working_dir}/etc/makepkg.conf
+    fi
+
+    echo "generating default locales"
+    cp /etc/locale.gen "${working_dir}/etc/locale.gen"
+    chroot "${working_dir}" locale-gen
+
+    if [ ! -e "${working_dir}/.arch-chroot" ]; then
+        date +%s > "${working_dir}/.arch-chroot"
+    fi
+    # }}}
+fi
+
+# vim:ft=sh:ts=4:sw=4:et: