Fabio Erculiani
103 lines
2.2 KiB
Bash
Executable File
103 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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# Do not continue for non-modular kernel - Bug #168322
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[ ! -f /proc/modules ] && exit 0
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if [ -e /dev/.udev_populate ]; then
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# Enable verbose while called from udev-addon-start
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. /dev/.udev_populate
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if [ -c "${CONSOLE}" ]; then
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# redirect stdin/out/err
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exec <${CONSOLE} >${CONSOLE} 2>/${CONSOLE}
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fi
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fi
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# set default if not present in udev.conf
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implicitly_blacklist_modules_autoload="yes"
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MODPROBE=/sbin/modprobe
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. /etc/init.d/functions.sh
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[ -e /etc/udev/udev.conf ] && . /etc/udev/udev.conf
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# Create a lock file for the current module.
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lock_modprobe() {
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[ -e /dev/.udev/ ] || return 0
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MODPROBE_LOCK="/dev/.udev/.lock-modprobe-${MODNAME}"
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retry=20
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while ! mkdir "$MODPROBE_LOCK" 2> /dev/null; do
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if [ $retry -eq 0 ]; then
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ewarn "Could not lock modprobe ${MODNAME}!"
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return 1
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fi
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sleep 1
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retry=$(($retry - 1))
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done
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return 0
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}
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unlock_modprobe() {
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[ "$MODPROBE_LOCK" ] || return 0
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rmdir "$MODPROBE_LOCK" || true
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MODPROBE_LOCK=""
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}
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load_module() {
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# Get normalized names only with _
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local MODLIST=$("${MODPROBE}" -q -i --show-depends "${@}" 2>/dev/null \
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| sed -e "s#^insmod /lib.*/\(.*\)\.ko.*#\1#g" -e 's|-|_|g')
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# exit if you have no modules to load
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[ -z "${MODLIST}" ] && return 0
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local m
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for m in ${MODLIST}; do
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MODNAME=$m
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done
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lock_modprobe
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if [ -d /sys/module/"${MODNAME}" ]; then
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# already loaded
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unlock_modprobe
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return 0
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fi
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# build regex to match module name written with either - or _
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MOD_REGEX="$(echo "${MODNAME}"|sed -e 's#_#[-_]#g')"
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# check for blacklisting
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if [ -f /etc/modprobe.conf ]; then
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if grep -q '^blacklist.*[[:space:]]'"${MOD_REGEX}"'\([[:space:]]\|$\)' /etc/modprobe.conf; then
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# module blacklisted
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unlock_modprobe
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return 0
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fi
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fi
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if [ "$implicitly_blacklist_modules_autoload" = "yes" -a -f "${MODULES_AUTOLOAD_FILE}" ]; then
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if grep -q "^${MOD_REGEX}"'\([[:space:]]\|$\)' "${MODULES_AUTOLOAD_FILE}"; then
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# module implictly blacklisted
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# as present in modules.autoload, Bug 184833
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unlock_modprobe
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return 0
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fi
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fi
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# now do real loading
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einfo " udev loading module ${MODNAME}"
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"${MODPROBE}" -q "${@}" >/dev/null 2>/dev/null
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unlock_modprobe
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}
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while [ -n "${1}" ]; do
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case "${1}" in
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--all|-a) ;;
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*) load_module "${1}" ;;
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esac
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shift
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done
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