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

file 243 lines (219 sloc) 6.218 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

auto_modules ()
{
    aliases="$(find /sys/devices/ -name modalias -exec cat {} +)"
    mods=""
    for a in $aliases; do
        m="$(modprobe --set-version ${KERNELVERSION} --resolve-alias "$a")"
        [ -n "$m" ] && mods="$mods $m"
    done

    echo "${mods}" | sed 's|-|_|g'
    [ -z "${mods}" ] && return 1
    return 0
}

all_modules ()
{
    mods=$(find ${MODULEDIR} -name '*.ko' 2>/dev/null | grep $@ | sort -u)

    echo "${mods}"
    [ -z "${mods}" ] && return 1
    return 0
}

checked_modules ()
{
    if [ -e "${MODULE_FILE}" ]; then
        for mod in $(all_modules $@); do
            modname="$(basename ${mod%%\.ko} | sed 's|-|_|g')"
            if grep "^${modname}$" "${MODULE_FILE}" >/dev/null 2>&1; then
                echo ${modname}
            fi
        done
        return 1
    else
        all_modules ${@}
    fi
}

msg () { [ "${QUIET}" = "n" ] && echo $@; }
err () { echo "ERROR: $@" >&2; }
die () { echo "FATAL: $@" >&2; cleanup; exit 1; }

add_full_dir ()
{
    if [ -n "${1}" -a -d "${1}" ]; then
        for f in ${1}/*; do
            if [ -d "${f}" ]; then
                add_full_dir "${f}"
            else
                add_file "${f}"
            fi
        done
    fi
}

add_dir ()
{
    #skip root directory and "." for relative directories... i.e. /foo/bar/./blah
    if [ -n "${1}" -a "${1}" != "/" -a "${1}" != "." ]; then
        if ! grep "dir ${1} " "${FILELIST}" 2>&1 > /dev/null; then
            add_dir $(dirname "${1}")
            msg " adding dir ${1}"
            echo "dir ${1} 755 0 0" >> "${FILELIST}"
        fi
    fi
}

# add_device /dev/foo type major minor [permissions]
add_device ()
{
    if [ $# -ge 4 ]; then
        local perms
        perms="${5:-644}"
        if ! grep "nod ${1}" "${FILELIST}" 2>&1 > /dev/null; then
            add_dir $(dirname "${1}")
            msg " adding node ${1}"
            echo "nod ${1} ${perms} 0 0 ${2} ${3} ${4}" >> "${FILELIST}"
        fi
    else
        err "invalid device node format: $@"
        return 1
    fi
}

# what the hell does this do?
add_symlink ()
{
    local fil dest dir
    if [ -h ${1} ]; then
        fil="${1##$BASEDIR}"
        dest="${2##$BASEDIR}"
        add_dir $(dirname "${dest}")
        add_dir $(dirname "${fil}")
        if ! grep "slink ${fil} " "${FILELIST}" 2>&1 > /dev/null; then
            msg " adding link ${fil} -> ${dest}"
            echo "slink ${fil} ${dest} $(stat -c '%a' ${1}) 0 0" >> "${FILELIST}"
        fi
    fi
    #fail quietly
}

add_symlink2 ()
{
    add_dir $(dirname ${1})
    add_dir $(dirname ${2})
    if ! grep -q "slink ${1} " "${FILELIST}" 2>&1 >/dev/null; then
         msg " adding link ${1} -> ${2}"
         echo "slink ${1} ${2} 777 0 0" >> "${FILELIST}"
    fi
}

add_file ()
{
    local fil lnk dir dest
    if [ -f "${1}" ]; then
        fil="${1}"
        lnk=$(readlink -f "${fil}")
        if [ -n "${lnk}" ]; then
            add_symlink "${fil}" "${lnk}"
            fil="${lnk}"
        fi
        if [ $# -eq 2 ]; then
            dest="${2}"
        else
            dest="${fil##$BASEDIR}"
            if [ "${dest}" = "${dest#/}" ]; then
                dest="/${dest}"
            fi
        fi

        add_dir $(dirname "${dest}")

        if ! grep "file ${dest} " "${FILELIST}" 2>&1 > /dev/null; then
            msg " adding file ${dest}"
            echo "file ${dest} ${fil} $(stat -c '%a' ${fil}) 0 0" >> "${FILELIST}"
        fi
    else
        err "file '${1}' does not exist"
        return 1
    fi
}

HAS_MODULES="n"
#modules are handled specially in order to enable autodetection
add_module ()
{
    local fil path fw mod deps
    #cleanup - remove .ko, replace - and _ with [-_] to match either
    fil=$(basename "${1}" | sed -e "s|[-_]|\[-_\]|g" -e "s|\.ko$||g")

    found=0
    for path in $(find "${MODULEDIR}" -type f -name "${fil}.ko"); do
        #get needed firmware files
        for fw in $(/sbin/modinfo -F firmware "${path}"); do
            [ -f "/lib/firmware/$fw" ] && add_file "/lib/firmware/$fw"
        done
        #get module depends
        for mod in $(/sbin/modinfo -F depends "${path}" | tr ',' ' '); do
            if [ -n "${mod}" ]; then
                add_module "${mod}"
            fi
        done
        HAS_MODULES="y"
        add_file "${path}" && found=1
    done
    if [ ${found} -eq 0 ]; then
        err "module '$fil' not found"
    fi
}

add_binary ()
{
    local bin dest type lib
    bin=$(which "${1}")
    if [ $? -ne 0 ]; then
        bin="${1}"
    fi

    dest=""
    if [ $# -eq 2 ]; then
        dest=${2}
    fi

    if [ ! -f "${bin}" ]; then
        err "'${bin}' is not a file"
        return 1
    fi

    if [ $? -eq 0 ]; then
        type=$(file -b "${bin}")
        case "${type}" in
            *script*)
            msg " adding '${type}' script, ensure proper interp exists..."
            add_file "${bin}" ${dest}
            ;;
            *executable*|*shared\ object*|*symbolic\ link*)
            add_file "${bin}" ${dest}
            #note, this will also handle 'not a dynamic executable' spit out by
            # static binaries... the deps will produce nothing
            for lib in $(ldd ${bin} 2>/dev/null | sed "s|.*=>\(.*\)|\1|"); do
                if [ -n "${lib}" ]; then
                    #remove TLS libraries
                    notls=$(echo ${lib} | sed 's|/lib/tls.*/\(lib.*\)|/lib/\1|')
                    [ -e "${notls}" ] && lib="${notls}"
                    [ -f "${lib}" ] && add_file "${lib}"
                fi
            done
            ;;
            *)
            err "unknown type '${type}' for binary '${bin}'"
            return 1
            ;;
        esac
    fi
}

parse_hook ()
{
    local mod bin fil
    for mod in ${MODULES}; do
        if [ -n "${mod}" ]; then
            add_module "${mod}"
        fi
    done

    for bin in ${BINARIES}; do
        if [ -n "${bin}" ]; then
            add_binary "${bin}"
        fi
    done

    for fil in ${FILES}; do
        if [ -n "${fil}" ]; then
            add_file "${fil}"
        fi
    done

    if [ -n "${SCRIPT}" ]; then
        add_file "${HOOKDIR}/${SCRIPT}" "/hooks/${SCRIPT}"
    fi
}
# vim: set ft=sh ts=4 sw=4 et:
Something went wrong with that request. Please try again.