This file is indexed.

/usr/share/lxc/templates/lxc-archlinux is in lxc-templates 2.0.0-0ubuntu2.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
#!/bin/bash

#
# template script for generating Arch Linux container for LXC
#

#
# lxc: linux Container library

# Authors:
# Alexander Vladimirov <alexander.idkfa.vladimirov@gmail.com>
# John Lane <lxc@jelmail.com>

# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.

# This library 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
# Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

# Detect use under userns (unsupported)
for arg in "$@"; do
    [ "$arg" = "--" ] && break
    if [ "$arg" = "--mapped-uid" -o "$arg" = "--mapped-gid" ]; then
        echo "This template can't be used for unprivileged containers." 1>&2
        echo "You may want to try the \"download\" template instead." 1>&2
        exit 1
    fi
done

# Make sure the usual locations are in PATH
export PATH=$PATH:/usr/sbin:/usr/bin:/sbin:/bin

# defaults
arch=$(uname -m)
default_path="/var/lib/lxc"
default_locale="en-US.UTF-8"
default_timezone="UTC"
pacman_config="/etc/pacman.conf"
common_config="/usr/share/lxc/config/common.conf"
shared_config="/usr/share/lxc/config/archlinux.common.conf"

# by default, install 'base' except the kernel
pkg_blacklist="linux"
base_packages=()
for pkg in $(pacman -Sqg base); do
   [ "${pkg_blacklist#*$pkg}" = "$pkg_blacklist" ] && base_packages+=($pkg)
done
declare -a additional_packages

# split comma-separated string into an array
# ${1} - string to split
# ${2} - separator (default is ",")
# ${result} - result value on success
split_string() {
    local ifs=${IFS}
    IFS="${2:-,}"
    read -a result < <(echo "${1}")
    IFS=${ifs}
    return 0
}

[ -f /etc/arch-release ] && is_arch=true

# Arch-specific preconfiguration for container
configure_arch() {
    # on ArchLinux, read defaults from host systemd configuration
    if [ "${is_arch}" ]; then
        cp -p /etc/locale.conf /etc/locale.gen "${rootfs_path}/etc/"
    else
        echo "LANG=${default_locale}" > "${rootfs_path}/etc/locale.conf"
        if [ -e "${rootfs_path}/etc/locale.gen" ]; then
            sed -i 's@^#\(en_US\.UTF-8\)@\1@' "${rootfs_path}/etc/locale.gen"
            if [ ! "${default_locale}" = "en_US.UTF-8" ]; then
                echo "${default_locale} ${default_locale##*.}" >> \
                "${rootfs_path}/etc/locale.gen"
            fi
        fi
    fi

    # hostname and nameservers
    echo "${name}" > "${rootfs_path}/etc/hostname"
    while read r; do
       [ "${r#nameserver}" = "$r" ] || echo "$r"
    done < /etc/resolv.conf > "${rootfs_path}/etc/resolv.conf"

    # chroot and configure system
    arch-chroot "${rootfs_path}" /bin/bash -s << EOF
mkdir /run/lock
locale-gen
ln -s /usr/share/zoneinfo/${default_timezone} /etc/localtime
# set default boot target
ln -s /lib/systemd/system/multi-user.target /etc/systemd/system/default.target
# override getty@.service for container ttys
sed -e 's/^ConditionPathExists=/# ConditionPathExists=/' \
    -e 's/After=dev-%i.device/After=/' \
    < /lib/systemd/system/getty\@.service \
    > /etc/systemd/system/getty\@.service
# fix systemd-sysctl service
sed -e 's/^ConditionPathIsReadWrite=\/proc\/sys\/$/ConditionPathIsReadWrite=\/proc\/sys\/net\//' \
    -e 's/^ExecStart=\/usr\/lib\/systemd\/systemd-sysctl$/ExecStart=\/usr\/lib\/systemd\/systemd-sysctl --prefix net/' \
    -i /usr/lib/systemd/system/systemd-sysctl.service
# initialize pacman keyring
pacman-key --init
pacman-key --populate archlinux
EOF
    # enable getty on active ttys
    local nttys=$(cat "${config_path}/config" ${shared_config} ${common_config} | grep "^lxc.tty" | head -n1 | cut -d= -f2 | tr -d "[:blank:]")
    local devttydir=$(cat "${config_path}/config" ${shared_config} ${common_config} | grep "^lxc.devttydir" | head -n1 | cut -d= -f2 | tr -d "[:blank:]")
    local devtty=""
    # bind getty instances to /dev/<devttydir>/tty* if lxc.devttydir is set
    [ -n "${devttydir}" ] && devtty="${devttydir}-"
    if [ ${nttys:-0} -gt 1 ]; then
      ( cd "${rootfs_path}/etc/systemd/system/getty.target.wants"
        for i in $(seq 1 $nttys); do ln -sf "../getty@.service" "getty@${devtty}tty${i}.service"; done )
    fi
    # update securetty to allow console login if devttydir is set
    if [ -n "${devttydir}" ]; then
        for i in $(seq 1 ${nttys:-1}); do
            echo "${devttydir}/tty${i}" >> "${rootfs_path}/etc/securetty"
        done
    fi
    [ -n "${devttydir}" ] && echo "${devttydir}/console" >> "${rootfs_path}/etc/securetty"
    # Arch default configuration allows only tty1-6 for login
    [ ${nttys:-0} -gt 6 ] && echo \
      "You may want to modify container's /etc/securetty \
      file to allow root logins on tty7 and higher"
    return 0
}

# write container configuration files
copy_configuration() {
    mkdir -p "${config_path}"
    local config="${config_path}/config"
    echo "lxc.utsname = ${name}" >> "${config}"
    grep -q "^lxc.arch" "${config}" 2>/dev/null \
        || echo "lxc.arch = ${arch}" >> "${config}"
    grep -q "^lxc.rootfs" "${config}" 2>/dev/null \
        || echo "lxc.rootfs = ${rootfs_path}" >> "${config}"
    [ -e "${shared_config}" ] \
        && echo "lxc.include = ${shared_config}" >> "${config}"
    if [ $? -ne 0 ]; then
        echo "Failed to configure container"
        return 1
    fi
    return 0
}

# install packages within container chroot
install_arch() {
    [ "${arch}" != "$(uname -m)" ] && different_arch=true

    if [ "${different_arch}" = "true" ]; then
        container_pacman_config=$(mktemp)
        container_mirrorlist=$(mktemp)
        sed -e "s:Architecture =.*:Architecture = ${arch}:g"  \
            -e "s:/etc/pacman.d/mirrorlist:${container_mirrorlist}:g" \
            "${pacman_config}" > "${container_pacman_config}"
        sed -e "s:\(x86_64\|\$arch\):${arch}:g" \
            /etc/pacman.d/mirrorlist > "${container_mirrorlist}"

        pacman_config="${container_pacman_config}"
    fi

    if ! pacstrap -dcGC "${pacman_config}" "${rootfs_path}" \
            ${base_packages[@]}; then
        echo "Failed to install container packages"
        return 1
    fi

    if [ "${different_arch}" = "true" ]; then
        sed -i -e "s:Architecture =.*:Architecture = ${arch}:g" \
            "${rootfs_path}"/etc/pacman.conf
        cp "${container_mirrorlist}" "${rootfs_path}"/etc/pacman.d/mirrorlist
        rm "${container_pacman_config}" "${container_mirrorlist}"
    fi

    [ -d "${rootfs_path}/lib/modules" ] && ldconfig -r "${rootfs_path}"
    return 0
}

usage() {
    cat <<EOF
usage:
    ${1} -n|--name=<container_name> [-p|--path=<path>] [-a|--arch=<arch of the container>]
        [-r|--root_password=<root password>] [-P|--packages=<pkg1,pkg2,...>]
        [-e|--enable_units=unit1,unit2...] [-d|--disable_units=unit1,unit2...]
        [-c|--config=<pacman config path>] [-h|--help]

Mandatory args:
  -n,--name           container name, used to as an identifier for that container from now on
Optional args:
  -p,--path           path to where the container rootfs will be created (${default_path})
  --rootfs            path for actual container rootfs, (${default_path}/rootfs)
  -P,--packages       preinstall additional packages, comma-separated list
  -e,--enable_units   enable systemd services, comma-separated list
  -d,--disable_units  disable systemd services, comma-separated list
  -c,--config         use specified pacman config when installing container packages
  -a,--arch           use specified architecture instead of host's architecture
  -r,--root_password  set container root password
  -h,--help           print this help
EOF
    return 0
}

options=$(getopt -o hp:P:e:d:n:c:a:r: -l help,rootfs:,path:,packages:,enable_units:,disable_units:,name:,config:,arch:,root_password: -- "${@}")
if [ ${?} -ne 0 ]; then
    usage $(basename ${0})
    exit 1
fi
eval set -- "${options}"

while true
do
    case "${1}" in
    -h|--help)          usage ${0} && exit 0;;
    -p|--path)          path=${2}; shift 2;;
    -n|--name)          name=${2}; shift 2;;
    --rootfs)           rootfs_path=${2}; shift 2;;
    -P|--packages)      additional_packages=${2}; shift 2;;
    -e|--enable_units)  enable_units=${2}; shift 2;;
    -d|--disable_units) disable_units=${2}; shift 2;;
    -c|--config)        pacman_config=${2}; shift 2;;
    -a|--arch)          arch=${2}; shift 2;;
    -r|--root_password) root_passwd=${2}; shift 2;;
    --)             shift 1; break ;;
    *)              break ;;
    esac
done

if [ -z "${name}" ]; then
    echo "missing required 'name' parameter"
    exit 1
fi

type pacman >/dev/null 2>&1
if [ ${?} -ne 0 ]; then
    echo "'pacman' command is missing, refer to wiki.archlinux.org for information about installing pacman"
    exit 1
fi

if [ -z "${path}" ]; then
    path="${default_path}/${name}"
fi

if [ "${EUID}" != "0" ]; then
    echo "This script should be run as 'root'"
    exit 1
fi

if [ -z "$rootfs_path" ]; then
    rootfs_path="${path}/rootfs"
fi
config_path="${path}"

revert() {
    echo "Interrupted, cleaning up"
    lxc-destroy -n "${name}"
    rm -rf "${path}/${name}"
    rm -rf "${default_path}/${name}"
    exit 1
}

trap revert SIGHUP SIGINT SIGTERM

copy_configuration
if [ ${?} -ne 0 ]; then
    echo "failed to write configuration file"
    rm -rf "${config_path}"
    exit 1
fi

if [ ${#additional_packages[@]} -gt 0 ]; then
    split_string ${additional_packages}
    base_packages+=(${result[@]})
fi

mkdir -p "${rootfs_path}"
install_arch
if [ ${?} -ne 0 ]; then
    echo "failed to install Arch Linux"
    rm -rf "${config_path}" "${path}"
    exit 1
fi

configure_arch
if [ ${?} -ne 0 ]; then
    echo "failed to configure Arch Linux for a container"
    rm -rf "${config_path}" "${path}"
    exit 1
fi

if [ ${#enable_units[@]} -gt 0 ]; then
    split_string ${enable_units}
    for unit in ${result[@]}; do
        [ "${unit##*.}" = "service" ] || unit="${unit}.service"
        ln -s "/usr/lib/systemd/system/${unit}" \
            "${rootfs_path}/etc/systemd/system/multi-user.target.wants/"
    done
fi

if [ ${#disable_units[@]} -gt 0 ]; then
    split_string ${disable_units}
    for unit in ${result[@]}; do
        [ "${unit##*.}" = "service" ] || unit="${unit}.service"
        ln -s /dev/null "${rootfs_path}/etc/systemd/system/${unit}"
    done
fi

if [ -n "${root_passwd}" ]; then
    echo "root:${root_passwd}" | chroot "${rootfs_path}" chpasswd
fi

cat << EOF
Arch Linux container ${name} is successfully created! The configuration is
stored in ${config_path}/config. Please refer to https://wiki.archlinux.org for
information about configuring Arch Linux.
EOF