summaryrefslogtreecommitdiff
path: root/archiso/mkarchiso
blob: 203d7f0ea1260a05da1eaad20e22920fd92103ea (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
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
#! /bin/bash

PKGLIST=""
QUIET="y"
FORCE="n"
PACCONFIG="/etc/pacman.conf"
export LABEL="ARCH_$(date +%Y%m)"
PUBLISHER="Arch Linux <http://www.archlinux.org>"
APPLICATION="Arch Linux Live/Rescue CD"
COMPRESSION="gzip"
CREATE_DEFAULT="n"
INSTALL_DIR="arch"

APPNAME=$(basename "${0}")
ARCH=$(uname -m)

# usage: usage <exitvalue>
usage ()
{
    echo "usage ${APPNAME} [options] command <command options>"
    echo " general options:"
    echo "    -f               Force overwrite of working files/squashfs image/bootable image"
    echo "    -p PACKAGE(S)    Additional package(s) to install, can be used multiple times"
    echo "    -C <file>        Config file for pacman. Default $PACCONFIG"
    echo "    -L <label>       Set a label for the disk"
    echo "    -P <publisher>   Set a publisher for the disk"
    echo "    -A <application> Set an application name for the disk"
    echo "    -c <compressor>  Set SquashFS compression type: gzip, lzma or lzo. Default $COMPRESSION"
    echo "                     NOTES:"
    echo "                            lzma: not officially supported yet by Linux (2.6.36)"
    echo "                            lzo:  needs Linux >= 2.6.36"
    echo "    -D <install_dir> Set an install_dir. All files will by located here on ISO (except for syslinux)"
    echo "                     Default $INSTALL_DIR"
    echo "                     NOTE: Max 8 characters, use only [a-z0-9]"
    echo "    -d               Create default user directory /home/arch"
    echo "    -v               Enable verbose output"
    echo "    -h               This message"
    echo " commands:"
    echo "   create <dir>"
    echo "      create a base directory layout to work with"
    echo "      includes all specified packages"
    echo "   iso <dir> <image name>"
    echo "      build an iso image from the working dir"
    exit $1
}

while getopts 'p:C:L:P:A:c:D:dfvh' arg; do
    case "${arg}" in
        p) PKGLIST="${PKGLIST} ${OPTARG}" ;;
        C) PACCONFIG="${OPTARG}" ;;
    	L) LABEL="${OPTARG}" ;;
    	P) PUBLISHER="${OPTARG}" ;;
    	A) APPLICATION="${OPTARG}" ;;
        c) COMPRESSION="${OPTARG}" ;;
        D) INSTALL_DIR="${OPTARG}" ;;
        d) CREATE_DEFAULT="y" ;;
        f) FORCE="y" ;;
        v) QUIET="n" ;;
        h|?) usage 0 ;;
        *) echo "invalid argument '${arg}'"; usage 1 ;;
    esac
done

#trim spaces
PKGLIST="$(echo $PKGLIST)"

shift $(($OPTIND - 1))

# do UID checking here so someone can at least get usage instructions
if [ "$EUID" != "0" ]; then
    echo "error: This script must be run as root."
    exit 1
fi

if [ ! -f "$PACCONFIG" ]; then
    echo "error: pacman config file '$PACCONFIG' does not exist"
    exit 1
fi

command_name="${1}"
work_dir=""
imgname=""

case "${command_name}" in
    create) work_dir="${2}"; imgname="none" ;;
    iso) work_dir="${2}"; imgname="${3}" ;;
    *) echo "invalid command name '${command_name}'"; usage 1 ;;
esac

[ "x${imgname}" = "x" ] && echo "Image name must be specified" && usage 1
[ "x${work_dir}" = "x" ] && echo "Please specify a working directory" && usage 1

echo "${APPNAME} : Configuration Settings"
echo "        working directory:   ${work_dir}"
echo "               image name:   ${imgname}"

# usage: _pacman <packages>...
_pacman ()
{
    local ret
    if [ "${QUIET}" = "y" ]; then
        mkarchroot -n -C "$PACCONFIG" -f "${work_dir}/root-image" $* 2>&1 >/dev/null
        ret=$?
    else
        mkarchroot -n -C "$PACCONFIG" -f "${work_dir}/root-image" $*
        ret=$?
    fi

    # Cleanup
    find "${work_dir}" -name *.pacnew -name *.pacsave -name *.pacorig -delete

    if [ $ret -ne 0 ]; then
        exit 1
    fi
}

command_create () {
    echo "====> Creating working directory: ${work_dir}"
    mkdir -p "${work_dir}/iso/${INSTALL_DIR}/${ARCH}"
    mkdir -p "${work_dir}/root-image/"

    if [ "${PKGLIST}" != "" ]; then
        echo "====> Installing packages to '${work_dir}/root-image/'"
        _pacman "${PKGLIST}"

        echo "Cleaning up what we can"
        if [ -d "${work_dir}/root-image/boot/" ]; then
            # remove the initcpio images that were generated for the host system
            find "${work_dir}/root-image/boot" -name '*.img' -delete
        fi

        if [ ${CREATE_DEFAULT} == "y" ]; then
            if [ -d "${work_dir}/root-image/home/" ]; then
                echo "Creating default home directory"
                install -d -o1000 -g100 -m0755 "${work_dir}/root-image/home/arch"
            fi
        fi

        # Delete pacman database sync cache files (*.tar.gz)
        find "${work_dir}/root-image/var/lib/pacman" -maxdepth 1 -type f -delete
        # Delete pacman database sync cache
        find "${work_dir}/root-image/var/lib/pacman/sync" -delete
        # Delete pacman package cache
        find "${work_dir}/root-image/var/cache/pacman/pkg" -type f -delete
        # Delete all log files, keeps empty dirs.
        find "${work_dir}/root-image/var/log" -type f -delete
        # Delete all temporary files and dirs
        find "${work_dir}/root-image/var/tmp" -mindepth 1 -delete
        # Delete all temporary files and dirs
        find "${work_dir}/root-image/tmp" -mindepth 1 -delete
    fi
}

# _mksquash dirname
_mksquash () {
    if [ ! -d "$1" ]; then
        echo "Error: '$1' is not a directory"
        return 1
    fi

    sqimg="${work_dir}/iso/${INSTALL_DIR}/${ARCH}/$(basename ${1}).sqfs"
    echo "====> Generating SquashFS image for '${1}'"
    if [ -e "${sqimg}" ]; then
        dirhaschanged=$(find ${1} -newer ${sqimg})
        if [ "${dirhaschanged}" != "" ]; then
            echo "SquashFS image '${sqimg}' is not up to date, rebuilding..."
            rm "${sqimg}"
        else
            echo "SquashFS image '${sqimg}' is up to date, skipping."
            return
        fi
    fi

    echo "Creating SquashFS image. This may take some time..."
    start=$(date +%s)
    if [ "${QUIET}" = "y" ]; then
        mksquashfs "${1}" "${sqimg}" -noappend -comp "${COMPRESSION}" >/dev/null
    else
        mksquashfs "${1}" "${sqimg}" -noappend -comp "${COMPRESSION}"
    fi
    minutes=$(echo $start $(date +%s) | awk '{ printf "%0.2f",($2-$1)/60 }')
    echo "Image creation done in $minutes minutes."
}

_imgcommon () {
    for d in $(find "${work_dir}" -maxdepth 1 -type d -name '[^.]*'); do
        if [ "$d" != "${work_dir}/iso" -a \
             "$(basename "$d")" != "iso" -a \
             "$d" != "${work_dir}" ]; then
            _mksquash "$d"
        fi
    done

    echo "====> Making bootable image"

    # Sanity checks
    if [ ! -d "${work_dir}/iso" ]; then
        echo "Error: '${work_dir}/iso' doesn't exist. What did you do?!"
        exit 1
    fi

    if [ ! -f "${work_dir}/iso/${INSTALL_DIR}/isomounts" ]; then
        echo "Error: the isomounts file doesn't exist. This image won't do anything"
        echo "  Protecting you from yourself and erroring out here..."
        exit 1
    fi

    if [ -e "${imgname}" ]; then
        if [ "${FORCE}" = "y" ]; then
            echo "Removing existing bootable image..."
            rm -rf "${imgname}"
        else
            echo "Error: Image '${imgname}' already exists, aborting."
            exit 1
        fi
    fi

    if ! sed "s|%ARCHISO_LABEL%|${LABEL}|g;
              s|%INSTALL_DIR%|${INSTALL_DIR}|g;
              s|%ARCH%|${ARCH}|g" -i ${work_dir}/iso/syslinux/syslinux.cfg; then
        echo "Error: ${work_dir}/iso/syslinux/syslinux.cfg, doesn't exist, aborting."
        exit 1
    fi
}

command_iso () {
    _imgcommon

    echo "Creating ISO image..."
    qflag=""
    [ "${QUIET}" = "y" ] && qflag="-quiet"
    mkisofs ${qflag} -r -l \
        -b syslinux/isolinux.bin -c syslinux/boot.cat \
        -uid 0 -gid 0 \
        -udf -allow-limited-size -iso-level 3 \
        -input-charset utf-8 -p "prepared by mkarchiso" \
        -no-emul-boot -boot-load-size 4 -boot-info-table \
        -publisher "${PUBLISHER}" \
        -A "${APPLICATION}" \
        -V "${LABEL}" \
        -o "${imgname}" "${work_dir}/iso/"
    isohybrid "${imgname}"
}

# Go through the main commands in order. If 'all' was specified, then we want
# to do everything. Start with 'install'.
if [ "${command_name}" = "create"  ]; then
    command_create
fi
if [ "${command_name}" = "iso" ]; then
    command_iso
fi

# vim:ts=4:sw=4:et: