librechroot


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

#!/bin/bash
# LibreChRoot
# Enters a chroot

# Copyright 2010 Nicolás Reynolds
# Copyright 2011 Joshua Haase

# ---------- GNU General Public License 3 ----------

# This file is part of Parabola.

# Parabola 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, either version 3 of the License, or
# (at your option) any later version.

# Parabola 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.

# You should have received a copy of the GNU General Public License
# along with Parabola. If not, see <http://www.gnu.org/licenses/>.

function usage {

    echo ""
    echo "Usage: $0 [options] [chrootname]"
    echo "Use it as root."
    echo ""
    echo "Default chroot name: $CHROOT"
    echo "Default chrootdir: $CHROOTDIR"
    echo ""
    echo "OPTIONS:"
    echo ""
    echo " -c : clean the chroot using pacman"
    echo "      only 'base', 'base-devel' and 'sudo' on chroot"
    echo " -d <chrootdir> : use <chrootdir> instead of default"
    echo " -r : clean /repo on the chroot"
    echo " -h : this message"
    echo " -u : update the chroot"
    echo ""

}

function clean_chroot {  # Clean packages with pacman
    msg "Cleaning chroot: ${CHROOTDIR}/${CHROOTNAME}"
    update-cleansystem
    cp "/etc/libretools.d/cleansystem" "${CHROOTDIR}/${CHROOTNAME}/cleansystem"
    (cat <<EOF
#!/bin/bash
export LANG=C

count='0'

while [ "\$count" -lt "3" ]; do

    pkgs=(\$(comm -23 <(pacman -Qq | sort) <(sort /cleansystem)))

    if [ \${#pkgs[@]} -gt 0 ]; then
        pacman --noconfirm -Rcs \${pkgs[@]}
    else
        echo "clean"
        exit 0
    fi

    declare -i "count=\$count + 1"

done

echo "Cleaning failed: please report error"

EOF
    ) > "${CHROOTDIR}/${CHROOTNAME}/clean"

    chmod +x "${CHROOTDIR}/${CHROOTNAME}/clean"
    mkarchroot -r "/clean" "${CHROOTDIR}/${CHROOTNAME}"

    rm "${CHROOTDIR}/${CHROOTNAME}/clean"
    rm "${CHROOTDIR}/${CHROOTNAME}/cleansystem"
}

function clean_repo {
    msg "Cleaning repo for chroot: ${CHROOTDIR}/${CHROOTNAME}"
    if [ -d "${CHROOTDIR}/${CHROOTNAME}/repo" ]; then
        find "${CHROOTDIR}/${CHROOTNAME}/repo/" -mindepth 1 -delete
    else
        mkdir -p "${CHROOTDIR}/${CHROOTNAME}/repo"
    fi
    bsdtar -czf "${CHROOTDIR}/${CHROOTNAME}/repo/repo.db.tar.gz" -T /dev/null
    ln -s "repo.db.tar.gz" "${CHROOTDIR}/${CHROOTNAME}/repo/repo.db"
}
source /etc/libretools.conf

if [ -e "$XDG_CONFIG_HOME/libretools/libretools.conf" ]; then
    source "$XDG_CONFIG_HOME/libretools/libretools.conf"
fi

CLEANCHROOT='false'
UPDATE='false'
CLEANREPO='false'
CHROOTNAME="${CHROOT:-${SUDO_USER:-root}}"

while getopts 'hrcud:' arg; do
    case $arg in
        h) usage; exit 0 ;;
        c) CLEANCHROOT='true' ;;
        u) UPDATE='true' ;;
        r) CLEANREPO='true' ;;
        d) CHROOTDIR="$(readlink -e $OPTARG)" ;;
    esac
done

[[ "$UID" != "0" ]] && {
    error "This script must be run as root."
    exit 1
}

shift $(($OPTIND - 1))

if [ $# -eq 1 ]; then
    CHROOTNAME="$1"
fi

if "$CLEANREPO"; then
    clean_repo
fi

if "$CLEANCHROOT"; then
    clean_chroot
elif "$UPDATE"; then
    msg "Updating chroot: ${CHROOTDIR}/${CHROOTNAME}"
    mkarchroot -u "${CHROOTDIR}/${CHROOTNAME}"
else
    msg "Entering chroot: ${CHROOTDIR}/${CHROOTNAME}"
    mkarchroot -r "bash" "${CHROOTDIR}/${CHROOTNAME}"
fi

exit 0