1 files changed, 56 insertions, 0 deletions
diff --git a/load-modules.sh b/load-modules.sh
new file mode 100755
index 0000000..4631dac
--- /dev/null
+++ b/load-modules.sh
@@ -0,0 +1,56 @@
+#! /bin/sh
+# Implement blacklisting for udev-loaded modules
+#   Includes module checking
+# - Aaron Griffin, Tobias Powalowski & Thomas Bächler for Arch Linux
+[ $# -ne 1 ] && exit 1
+
+MODPROBE="/sbin/modprobe"
+RESOLVEALIAS="${MODPROBE} --resolve-alias"
+USEBLACKLIST="--use-blacklist"
+SED="/bin/sed"
+
+if [ -f /proc/cmdline ]; then
+  for cmd in $(cat /proc/cmdline); do
+    case $cmd in
+      disablemodules=*) eval $cmd ;;
+      load_modules=off) exit ;;
+    esac
+  done
+  #parse cmdline entries of the form "disablemodules=x,y,z"
+  if [ -n "${disablemodules}" ]; then
+    BLACKLIST="$(echo "${disablemodules}" | ${SED} 's|,| |g')"
+  fi
+fi
+
+# sanitize the module names
+BLACKLIST="$(echo "${BLACKLIST}" | ${SED} 's|-|_|g')"
+
+if [ -n "${BLACKLIST}" ] ; then
+  # Try to find all modules for the alias
+  mods="$($RESOLVEALIAS $1)"
+  # If no modules could be found, try if the alias name is a module name
+  # In that case, omit the --use-blacklist parameter to imitate normal modprobe behaviour
+  [ -z "${mods}" ] && $MODPROBE -qni $1 && mods="$1" && USEBLACKLIST=""
+  [ -z "${mods}" ] && exit
+  for mod in ${mods}; do
+    # Find the module and all its dependencies
+    deps="$($MODPROBE -i --show-depends ${mod})"
+    [ $? -ne 0 ] && continue
+
+    #sanitize the module names
+    deps="$(echo "$deps" | ${SED} \
+            -e "s#^insmod /lib.*/\(.*\)\.ko.*#\1#g" \
+            -e 's|-|_|g')"
+    # If the module or any of its dependencies is blacklisted, don't load it
+    for dep in $deps; do
+      for blackmod in ${BLACKLIST}; do
+        [ "${blackmod}" = "${dep}" ] && continue 3
+      done
+    done
+    $MODPROBE $USEBLACKLIST ${mod}
+  done
+else
+  $MODPROBE $1
+fi
+
+# vim: set et ts=4: