summaryrefslogtreecommitdiff
path: root/arch-nspawn.in
blob: 468e5fe955300771fc5fc7bc72d7ef5015773cae (plain)
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
#!/bin/bash
# License: GNU GPLv2
#
# 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)
m4_include(lib/archroot.sh)

# umask might have been changed in /etc/profile
# ensure that sane default is set again
umask 0022

working_dir=''

files=()
mount_args=()

usage() {
	echo "Usage: ${0##*/} [options] working-dir [systemd-nspawn arguments]"
	echo "A wrapper around systemd-nspawn. Provides support for pacman."
	echo
	echo ' options:'
	echo '    -C <file>     Location of a pacman config file'
	echo '    -M <file>     Location of a makepkg config file'
	echo '    -c <dir>      Set pacman cache'
	echo '    -f <file>     Copy file from the host to the chroot'
	echo '    -s            Do not run setarch'
	echo '    -h            This message'
	exit 1
}

while getopts 'hC:M:c:f:s' arg; do
	case "$arg" in
		C) pac_conf="$OPTARG" ;;
		M) makepkg_conf="$OPTARG" ;;
		c) cache_dirs+=("$OPTARG") ;;
		f) files+=("$OPTARG") ;;
		s) nosetarch=1 ;;
		h|?) usage ;;
		*) error "invalid argument '%s'" "$arg"; usage ;;
	esac
done
shift $((OPTIND - 1))

(( $# < 1 )) && die 'You must specify a directory.'
check_root

working_dir=$(readlink -f "$1")
shift 1

[[ -z $working_dir ]] && die 'Please specify a working directory.'

pacconf_cmd=$(command -v pacman-conf || command -v pacconf)

if (( ${#cache_dirs[@]} == 0 )); then
	mapfile -t cache_dirs < <($pacconf_cmd --config "${pac_conf:-$working_dir/etc/pacman.conf}" CacheDir)
fi

# shellcheck disable=2016
host_mirrors=($($pacconf_cmd --config "${pac_conf:-$working_dir/etc/pacman.conf}" --repo extra Server 2> /dev/null | sed -r 's#(.*/)extra/os/.*#\1$repo/os/$arch#;t;s#(.*/)[^/]+/extra\(/\?\)$#\1$arch/$repo\2#'))

for host_mirror in "${host_mirrors[@]}"; do
	if [[ $host_mirror == *file://* ]]; then
		host_mirror=$(echo "$host_mirror" | sed -r 's#file://(/.*)/\$repo/os/\$arch#\1#g')
		for m in "$host_mirror"/pool/*/; do
			in_array "$m" "${cache_dirs[@]}" || cache_dirs+=("$m")
		done
	fi
done

while read -r line; do
	mapfile -t lines < <($pacconf_cmd --config "${pac_conf:-$working_dir/etc/pacman.conf}" \
		--repo $line Server | sed -r 's#(.*/)[^/]+/os/.+#\1#')
	for line in "${lines[@]}"; do
		if [[ $line = file://* ]]; then
			line=${line#file://}
			in_array "$line" "${cache_dirs[@]}" || cache_dirs+=("$line")
		fi
	done
done < <($pacconf_cmd --config "${pac_conf:-$working_dir/etc/pacman.conf}" --repo-list)

mount_args+=("--bind=${cache_dirs[0]//:/\\:}")

for cache_dir in "${cache_dirs[@]:1}"; do
	mount_args+=("--bind-ro=${cache_dir//:/\\:}")
done

# {{{ functions
copy_hostconf () {
	unshare --fork --pid gpg --homedir "$working_dir"/etc/pacman.d/gnupg/ --no-permission-warning --quiet --batch --import --import-options import-local-sigs "$(pacman-conf GpgDir)"/pubring.gpg >/dev/null 2>&1
	pacman-key --gpgdir "$working_dir"/etc/pacman.d/gnupg/ --import-trustdb "$(pacman-conf GpgDir)" >/dev/null 2>&1

	printf 'Server = %s\n' "${host_mirrors[@]}" | \
		tee "$working_dir/etc/pacman.d/mirrorlist" > \
		"$working_dir/etc/pacman.d/mirrorlist32"

	[[ -n $pac_conf ]] && cp "$pac_conf" "$working_dir/etc/pacman.conf"
	[[ -n $makepkg_conf ]] && cp "$makepkg_conf" "$working_dir/etc/makepkg.conf"

	local file
	for file in "${files[@]}"; do
		mkdir -p "$(dirname "$working_dir$file")"
		cp -T "$file" "$working_dir$file"
	done

	sed -r "s|^#?\\s*CacheDir.+|CacheDir = ${cache_dirs[*]}|g" -i "$working_dir/etc/pacman.conf"
}
# }}}

umask 0022

# Sanity check
if [[ ! -f "$working_dir/.arch-chroot" ]]; then
	die "'%s' does not appear to be an Arch chroot." "$working_dir"
elif [[ $(cat "$working_dir/.arch-chroot") != "$CHROOT_VERSION" ]]; then
	die "chroot '%s' is not at version %s. Please rebuild." "$working_dir" "$CHROOT_VERSION"
fi

copy_hostconf

eval "$(grep -a '^CARCH=' "$working_dir/etc/makepkg.conf")"

[[ -z $nosetarch ]] || unset CARCH
if [[ -f "@pkgdatadir@/setarch-aliases.d/${CARCH}" ]]; then
	read -r set_arch < "@pkgdatadir@/setarch-aliases.d/${CARCH}"
else
	set_arch="${CARCH}"
fi

exec ${CARCH:+setarch "$set_arch"} systemd-nspawn -q \
	-D "$working_dir" \
	-E "PATH=/usr/local/sbin:/usr/local/bin:/usr/bin" \
	--register=no --keep-unit --as-pid2 \
	"${mount_args[@]}" \
	"$@"