Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

executable file 292 lines (261 sloc) 9.041 kb
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
#!/bin/sh
# mkinitcpio - modular tool for building an init ramfs cpio image
#
# IMPORTANT: We need to keep a common base syntax here
# because some of these hooks/scripts need to run under
# the klibc shell or even busybox's ash - therefore, the
# following constraints should be enforced:
# variables should be quoted and bracketed "${SOMEVAR}"
# inline execution should be done with $() instead of backticks
# use -z "${var}" to test for nulls/empty strings
# incase of embedded spaces, quote all path names and string comarpisons
#


# Settings
TMPDIR="$(mktemp -d /tmp/mkinitcpio.XXXXXX)"
BASEDIR=""
FILELIST="${TMPDIR}/filelist"
MESSAGEFILE="${TMPDIR}/message"
KERNELVERSION="$(uname -r)"
FUNCTIONS="functions"
CONFIG="mkinitcpio.conf"
HOOKDIR="hooks"
INSTDIR="install"
MODULE_FILE=""
SAVELIST=""
GENIMG=""
APPEND=""
PRESET=""
MESSAGE=""
SKIPHOOKS=""
PRESETDIR="mkinitcpio.d"
QUIET="y"
SHOW_AUTOMODS="n"

# Add /{,usr}/sbin to path
# works around undetected problems like in #8448
PATH="${PATH}:/sbin:/usr/sbin"

APPNAME=$(basename "${0}")

usage ()
{
    echo "${APPNAME}: usage"
    echo " -c CONFIG Use CONFIG file. default: /etc/mkinitcpio.conf"
    echo " -k KERNELVERSION Use KERNELVERSION. default: $(uname -r)"
    echo " -s NAME Save filelist. default: no"
    echo " -b BASEDIR Use BASEDIR. default: /"
    echo " -g IMAGE Generate a cpio image as IMAGE. default: no"
    echo " -a NAME Append to an existing filelist. default: no"
    echo " -p PRESET Build specified preset."
    echo " -m MESSAGE Print MESSAGE before passing control to kinit."
    echo " -S SKIPHOOKS Skip SKIPHOOKS (comma-separated) when building the image."
    echo " -v Verbose output. Default: no"
    echo " -M Display modules found via autodetection."
    echo " -L List all available hooks."
    echo " -H HOOKNAME Output help for hook 'HOOKNAME'."
    echo " -h This message."
    cleanup
    exit 1
}

cleanup ()
{
    [ -n "${TMPDIR}" -a -d "${TMPDIR}" ] && rm -rf ${TMPDIR}
}

sighandler() {
    cleanup
    exit 1
}

trap sighandler TERM INT

while getopts ':c:k:s:b:g:a:p:m:vH:LMhS:' arg; do
    if [ "${OPTARG:0:1}" = "-" ]; then
        echo "error: optional argument to '-${arg}' begins with a '-'"
        echo " you probably don't want this....aborting."
        usage
    fi
    case "${arg}" in
        c) CONFIG="${OPTARG}" ;;
        k) KERNELVERSION="${OPTARG}" ;;
        s) SAVELIST="y"; FILELIST="${OPTARG}" ;;
        b) BASEDIR="${OPTARG}" ;;
        g) GENIMG="${OPTARG}" ;;
        a) APPEND="y"; SAVELIST="y"; FILELIST="${OPTARG}" ;;
        p) PRESET="${OPTARG}" ;;
        m) MESSAGE="${OPTARG}" ;;
        v) QUIET="n" ;;
        S) SKIPHOOKS="${OPTARG}" ;;
        H) source "${INSTDIR}/${OPTARG}";
           echo "Help for hook '${OPTARG}':"
           help
cleanup
           exit 0 ;;
        L) echo "Available hooks: "
           for h in ${INSTDIR}/*; do
               echo " $(basename ${h})"
           done
           cleanup
           exit 0 ;;
        M) SHOW_AUTOMODS="y" ;;
        h|?) usage ;;
        :) echo "${OPTARG} requires a value..."; usage ;;
        *) echo "invalid argument '${arg}'"; usage ;;
    esac
done
shift $((${OPTIND} - 1))

# use preset $PRESET
if [ -n "${PRESET}" ]; then
    if [ -f "${PRESETDIR}/${PRESET}.preset" ]; then
        # Use -b, -m and -v options specified earlier
        PRESET_MKOPTS="${0}"
        [ -n "${BASEDIR}" ] && PRESET_MKOPTS="${PRESET_MKOPTS} -b ${BASEDIR}"
        [ -n "${MESSAGE}" ] && PRESET_MKOPTS="${PRESET_MKOPTS} -m \"${MESSAGE}\""
        [ "${QUIET}" = "n" ] && PRESET_MKOPTS="${PRESET_MKOPTS} -v"
        # Build all images
        source ${PRESETDIR}/${PRESET}.preset
        for p in ${PRESETS[@]}; do
            echo "==> Building image \"${p}\""
            PRESET_CMD="${PRESET_MKOPTS}"

            eval "PRESET_KVER=\"\${${p}_kver}\""
            [ -z "${PRESET_KVER}" ] && PRESET_KVER="${ALL_kver}"
            eval "PRESET_CONFIG=\"\${${p}_config}\""
            [ -z "${PRESET_CONFIG}" ] && PRESET_CONFIG="${ALL_config}"
            eval "PRESET_IMAGE=\"\${${p}_image}\""
            eval "PRESET_OPTIONS=\"\${${p}_options}\""

            if [ -n "${PRESET_KVER}" ]; then
                PRESET_CMD="${PRESET_CMD} -k ${PRESET_KVER}"
            else
                echo "==> No kernel version specified. Skipping image \"${p}\"."
                continue
            fi

            if [ -n "${PRESET_CONFIG}" ]; then
                PRESET_CMD="${PRESET_CMD} -c ${PRESET_CONFIG}"
            else
                echo "==> No configuration file specified. Skipping image \"${p}\"."
                continue
            fi

            if [ -n "${PRESET_IMAGE}" ]; then
                PRESET_CMD="${PRESET_CMD} -g ${PRESET_IMAGE}"
            else
                echo "==> No image file specified. Skipping image \"${p}\"."
                continue
            fi

            if [ -n "${PRESET_OPTIONS}" ]; then
                PRESET_CMD="${PRESET_CMD} ${PRESET_OPTIONS}"
            fi

            echo "==> Running command: ${PRESET_CMD}"
            if eval ${PRESET_CMD}; then
                echo "==> SUCCESS"
            else
                echo "==> FAIL"
            fi
        done
        cleanup
        exit 0
    else
        echo "Preset ${PRESET} does not exist. Exiting."
        cleanup
        exit 1
    fi
fi

# append a trailing / if needed
if [ "${BASEDIR:${#BASEDIR}}" == "/" ]; then
    BASEDIR="${BASEDIR:0:${#BASEDIR}-1}"
fi

MODULEDIR="${BASEDIR}/lib/modules/${KERNELVERSION}"

if [ -n "${BASEDIR}" ]; then
    if [ "${BASEDIR:0:1}" != "/" ]; then
        BASEDIR="$(pwd)/${BASEDIR}"
    elif [ ! -d "${BASEDIR}" ]; then
        echo "base directory '${BASEDIR}' does not exist or is not a directory"
        cleanup
        exit 1
    fi
fi

if [ ! -f "${CONFIG}" ]; then
    echo "config file '${CONFIG}' cannot be found, aborting..."
    cleanup
    exit 1
fi
source "${CONFIG}"

if [ -f "${FILELIST}" -a -z "${APPEND}" ]; then
    if [ -z "${SAVELIST}" ]; then
        rm ${FILELIST}
        touch "${FILELIST}"
    else
        echo "destination file list '${FILELIST}' exists - remove before running"
        cleanup
        exit 1
    fi
else
    touch "${FILELIST}"
fi

BASEDIR=$(echo ${BASEDIR} | tr -s /)
MODULEDIR=$(echo ${MODULEDIR} | tr -s /)

source "${FUNCTIONS}"

if [ "${SHOW_AUTOMODS}" = "y" ]; then
    echo "Modules autodetected:"
    source "${INSTDIR}/autodetect"
    install
    cat "${MODULE_FILE}"
    cleanup
    exit 0
fi

echo ":: Begin build"
#parse 'global' hook, as defined in ${CONFIG}
parse_hook

for hook in ${HOOKS}; do
    echo "${SKIPHOOKS}" | grep -qw ${hook} && continue
    unset MODULES
    unset BINARIES
    unset FILES
    install () { msg "${hook}: no install function..."; }
    # Deprecation check
    # A hook is considered deprecated if it is a symlink
    # within $INSTDIR.
    if [ -L "${INSTDIR}/${hook}" ]; then
        newhook="$(readlink -ne "${INSTDIR}/${hook}")"
        if [ -n "${newhook}" -a "${INSTDIR}/$(basename ${newhook})" -ef "${newhook}" ]; then
            newhook="$(basename ${newhook})"
            echo " -------------------------------------------------------------------"
            echo " WARNING: Hook \"${hook}\" is deprecated."
            echo " Replace it with \"${newhook}\" in your configuration file."
            echo " -------------------------------------------------------------------"
            hook="${newhook}"
        fi
    fi
    if grep "install" "${INSTDIR}/${hook}" >/dev/null 2>&1; then
        source "${INSTDIR}/${hook}"
        echo ":: Parsing hook [${hook}]"
        install
        parse_hook
    else
        die "Hook '${hook}' can not be found."
    fi
done

if [ "${HAS_MODULES}" == "y" ]; then
    echo ":: Generating module dependencies"
    for mod in $(grep "file /lib/modules/${KERNELVERSION}" ${FILELIST} | cut -d' ' -f2); do
        dir=$(dirname "${mod}")
        mkdir -p "${TMPDIR}/${dir}"
        cp "${BASEDIR}${mod}" "${TMPDIR}/${dir}/"
    done
    /sbin/depmod -b ${TMPDIR} ${KERNELVERSION}
    add_file "${TMPDIR}/lib/modules/${KERNELVERSION}/modules.dep" "/lib/modules/${KERNELVERSION}/modules.dep"
    add_file "${TMPDIR}/lib/modules/${KERNELVERSION}/modules.alias" "/lib/modules/${KERNELVERSION}/modules.alias"
    add_file "${TMPDIR}/lib/modules/${KERNELVERSION}/modules.symbols" "/lib/modules/${KERNELVERSION}/modules.symbols"
fi

status=0
if [ -n "${GENIMG}" ]; then
    echo -n ":: Generating image '${GENIMG}'..."
    if ! /sbin/gen_init_cpio ${FILELIST} | gzip -9 > "${GENIMG}"; then
        echo "FAILED"
        status=1
    else
        echo "SUCCESS"
        status=0
    fi

    if [ -z "${SAVELIST}" ]; then
        rm ${FILELIST}
    fi
else
    echo ":: Dry run complete, use -g IMAGE to generate a real image"
fi

cleanup

exit ${status}
#vim:set ft=sh ts=4 sw=4 noet:
Something went wrong with that request. Please try again.