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
|
#!/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.
m4_include(lib/common.sh)
CHROOT_VERSION='v2'
FORCE='n'
RUN=''
NOCOPY='n'
working_dir=''
APPNAME=$(basename "${0}")
# usage: usage <exitvalue>
usage() {
echo "usage ${APPNAME} [options] working-dir [package-list | app]"
echo ' options:'
echo ' -r <app> Run "app" within the context of the chroot'
echo ' -u Update the chroot via pacman'
echo ' -f Force overwrite of files in the working-dir'
echo ' -C <file> Location of a pacman config file'
echo ' -M <file> Location of a makepkg config file'
echo ' -n Do not copy config files into the chroot'
echo ' -c <dir> Set pacman cache'
echo ' -h This message'
exit 1
}
while getopts 'r:ufnhC:M:c:' arg; do
case "${arg}" in
r) RUN="$OPTARG" ;;
u) RUN='/bin/sh -c "pacman -Syu --noconfirm && (pacman -Qqu >/dev/null && pacman -Su --noconfirm || exit 0)"' ;;
f) FORCE='y' ;;
C) pac_conf="$OPTARG" ;;
M) makepkg_conf="$OPTARG" ;;
n) NOCOPY='y' ;;
c) cache_dir="$OPTARG" ;;
h|?) usage 0 ;;
*) error "invalid argument '${arg}'"; usage ;;
esac
done
if (( $EUID != 0 )); then
die 'This script must be run as root.'
fi
shift $(($OPTIND - 1))
if [[ -z $RUN ]] && (( $# < 2 )); then
die 'You must specify a directory and one or more packages.'
elif (( $# < 1 )); then
die 'You must specify a directory.'
fi
working_dir="$(readlink -f ${1})"
shift 1
[[ -z $working_dir ]] && die 'Please specify a working directory.'
if [[ -z $cache_dir ]]; then
cache_dirs=($(pacman -v $cache_conf 2>&1 | grep '^Cache Dirs:' | sed 's/Cache Dirs:\s*//g'))
else
cache_dirs=(${cache_dir})
fi
host_mirror=$(pacman -Sddp extra/devtools 2>/dev/null | sed -E 's#(.*/)extra/os/.*#\1$repo/os/$arch#')
if echo "${host_mirror}" | grep -q 'file://'; then
host_mirror_path=$(echo "${host_mirror}" | sed -E 's#file://(/.*)/\$repo/os/\$arch#\1#g')
fi
# {{{ functions
chroot_mount() {
[[ -e "${working_dir}/sys" ]] || mkdir "${working_dir}/sys"
mount -o bind /sys "${working_dir}/sys"
mount -o remount,ro,bind "${working_dir}/sys"
[[ -e "${working_dir}/proc" ]] || mkdir "${working_dir}/proc"
mount -t proc proc -o nosuid,noexec,nodev "${working_dir}/proc"
mount -o bind /proc/sys "${working_dir}/proc/sys"
mount -o remount,ro,bind "${working_dir}/proc/sys"
[[ -e "${working_dir}/dev" ]] || mkdir "${working_dir}/dev"
mount -t tmpfs dev "${working_dir}/dev" -o mode=0755,size=10M,nosuid,strictatime
mknod -m 666 "${working_dir}/dev/null" c 1 3
mknod -m 666 "${working_dir}/dev/zero" c 1 5
mknod -m 600 "${working_dir}/dev/console" c 5 1
mknod -m 644 "${working_dir}/dev/random" c 1 8
mknod -m 644 "${working_dir}/dev/urandom" c 1 9
mknod -m 666 "${working_dir}/dev/tty" c 5 0
mknod -m 666 "${working_dir}/dev/ptmx" c 5 2
mknod -m 666 "${working_dir}/dev/tty0" c 4 0
mknod -m 666 "${working_dir}/dev/full" c 1 7
mknod -m 666 "${working_dir}/dev/rtc0" c 254 0
ln -s /proc/kcore "${working_dir}/dev/core"
ln -s /proc/self/fd "${working_dir}/dev/fd"
ln -s /proc/self/fd/0 "${working_dir}/dev/stdin"
ln -s /proc/self/fd/1 "${working_dir}/dev/stdout"
ln -s /proc/self/fd/2 "${working_dir}/dev/stderr"
[[ -e "${working_dir}/dev/shm" ]] || mkdir "${working_dir}/dev/shm"
mount -t tmpfs shm "${working_dir}/dev/shm" -o nodev,nosuid,size=128M
[[ -e "${working_dir}/dev/pts" ]] || mkdir "${working_dir}/dev/pts"
mount -o bind /dev/pts "${working_dir}/dev/pts"
[[ -e "${working_dir}/run" ]] || mkdir "${working_dir}/run"
mount -t tmpfs tmpfs "${working_dir}/run" -o nodev,nosuid,strictatime,size=64M
if [[ -n $host_mirror_path ]]; then
[[ -e "${working_dir}/${host_mirror_path}" ]] || mkdir -p "${working_dir}/${host_mirror_path}"
mount -o bind "${host_mirror_path}" "${working_dir}/${host_mirror_path}"
mount -o remount,ro,bind "${working_dir}/${host_mirror_path}"
fi
local cache_dir_first=true
for cache_dir in ${cache_dirs[@]}; do
[[ -e $cache_dir ]] || mkdir -p "${cache_dir}"
[[ -e "${working_dir}/${cache_dir}" ]] || mkdir -p "${working_dir}/${cache_dir}"
mount -o bind "${cache_dir}" "${working_dir}/${cache_dir}"
if ! ${cache_dir_first}; then
mount -o remount,ro,bind "${working_dir}/${cache_dir}"
else
cache_dir_first=false
fi
done
trap 'chroot_umount' EXIT INT QUIT TERM HUP
}
copy_hostconf () {
cp /etc/resolv.conf "${working_dir}/etc/resolv.conf"
cp -a /etc/pacman.d/gnupg "${working_dir}/etc/pacman.d"
echo "Server = ${host_mirror}" > ${working_dir}/etc/pacman.d/mirrorlist
if [[ -n $pac_conf && $NOCOPY = 'n' ]]; then
cp ${pac_conf} ${working_dir}/etc/pacman.conf
fi
if [[ -n $makepkg_conf && $NOCOPY = 'n' ]]; then
cp ${makepkg_conf} ${working_dir}/etc/makepkg.conf
fi
sed -r "s|^#?\\s*CacheDir.+|CacheDir = $(echo -n ${cache_dirs[@]})|g" -i ${working_dir}/etc/pacman.conf
}
chroot_umount () {
umount "${working_dir}/proc/sys"
umount "${working_dir}/proc"
umount "${working_dir}/sys"
umount "${working_dir}/dev/pts"
umount "${working_dir}/dev/shm"
umount "${working_dir}/dev"
umount "${working_dir}/run"
for cache_dir in ${cache_dirs[@]}; do
umount "${working_dir}/${cache_dir}"
done
[[ -n $host_mirror_path ]] && umount "${working_dir}/${host_mirror_path}"
}
chroot_lock () {
# Only reopen the FD if it wasn't handed to us
if [[ $(readlink -f /dev/fd/9) != "${working_dir}.lock" ]]; then
exec 9>"${working_dir}.lock"
fi
# Lock the chroot. Take note of the FD number.
if ! flock -n 9; then
stat_busy "Locking chroot"
flock 9
stat_done
fi
}
# }}}
umask 0022
if [[ -n $RUN ]]; then
# run chroot {{{
#Sanity check
if [[ ! -f "${working_dir}/.arch-chroot" ]]; then
die "'${working_dir}' does not appear to be a Arch chroot."
elif [[ $(cat "${working_dir}/.arch-chroot") != ${CHROOT_VERSION} ]]; then
die "'${working_dir}' is not compatible with ${APPNAME} version ${CHROOT_VERSION}. Please rebuild."
fi
chroot_lock
chroot_mount
copy_hostconf
eval unshare -mui -- chroot "${working_dir}" ${RUN}
# }}}
else
# {{{ build chroot
if [[ -e $working_dir && $FORCE = 'n' ]]; then
die "Working directory '${working_dir}' already exists - try using -f"
fi
if { type -P btrfs && btrfs subvolume create "${working_dir}"; } &>/dev/null; then
chmod 0755 "${working_dir}"
fi
mkdir -p "${working_dir}/var/lib/pacman/sync"
mkdir -p "${working_dir}/etc/"
chroot_lock
chroot_mount
pacargs="--noconfirm --root=${working_dir} ${cache_dirs[@]/#/--cachedir=}"
if [[ -n $pac_conf ]]; then
pacargs="$pacargs --config=${pac_conf}"
fi
if (( $# != 0 )); then
op='-Sy'
if [[ $FORCE = 'y' ]]; then
op="${op}f"
fi
if ! pacman ${op} ${pacargs} $@; then
die 'Failed to install all packages'
fi
fi
if [[ -d "${working_dir}/lib/modules" ]]; then
ldconfig -r "${working_dir}"
fi
if [[ -e "${working_dir}/etc/locale.gen" ]]; then
sed -i 's@^#\(en_US\|de_DE\)\(\.UTF-8\)@\1\2@' "${working_dir}/etc/locale.gen"
chroot "${working_dir}" /usr/sbin/locale-gen
fi
echo 'UTC' > "${working_dir}/etc/timezone"
ln -s /usr/share/zoneinfo/UTC "${working_dir}/etc/localtime"
echo 'LANG=C' > "${working_dir}/etc/locale.conf"
copy_hostconf
echo "${CHROOT_VERSION}" > "${working_dir}/.arch-chroot"
# }}}
fi
|
