mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-09-19 22:08:32 +00:00
52 lines
1.5 KiB
Bash
52 lines
1.5 KiB
Bash
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#! /bin/sh
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# Implement blacklisting for udev-loaded modules
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# Includes module checking
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# - Aaron Griffin & Tobias Powalowski for Archlinux
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[ $# -ne 1 ] && exit 1
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MODPROBE="/sbin/modprobe"
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RESOLVEALIAS="/bin/resolve-modalias"
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USEBLACKLIST="--use-blacklist"
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REPLACE="/bin/replace"
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MODDEPS="/bin/moddeps"
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if [ -f /proc/cmdline ]; then
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for cmd in $(cat /proc/cmdline); do
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case $cmd in
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disablemodules=*) eval $cmd ;;
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load_modules=off) exit ;;
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esac
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done
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#parse cmdline entries of the form "disablemodules=x,y,z"
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if [ -n "${disablemodules}" ]; then
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BLACKLIST="$(${REPLACE} ${disablemodules} ',')"
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fi
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fi
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# sanitize the module names
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BLACKLIST="$(${REPLACE} "${BLACKLIST}" '-' '_')"
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if [ -n "${BLACKLIST}" ] ; then
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# Try to find all modules for the alias
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mods="$($RESOLVEALIAS /lib/modules/$(uname -r)/modules.alias $1)"
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# If no modules could be found, try if the alias name is a module name
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# In that case, omit the --use-blacklist parameter to imitate normal modprobe behaviour
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[ -z "${mods}" ] && $MODPROBE -qni $1 && mods="$1" && USEBLACKLIST=""
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[ -z "${mods}" ] && exit
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for mod in ${mods}; do
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deps="$(${MODDEPS} ${mod})"
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[ $? -ne 0 ] && continue
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# If the module or any of its dependencies is blacklisted, don't load it
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for dep in $deps; do
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for blackmod in ${BLACKLIST}; do
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[ "${blackmod}" = "${dep}" ] && continue 3
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done
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done
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$MODPROBE $USEBLACKLIST ${mod}
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done
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else
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$MODPROBE $1
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fi
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# vim: set et ts=4:
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