1 files changed, 80 insertions, 0 deletions
diff --git a/testing/udev/load-modules.sh b/testing/udev/load-modules.sh
new file mode 100755
index 000000000..1e2af913e
--- /dev/null
+++ b/testing/udev/load-modules.sh
@@ -0,0 +1,80 @@
+#!/bin/bash
+# Implement blacklisting for udev-loaded modules
+
+[ $# -ne 1 ] && exit 1
+
+. /etc/rc.conf
+
+# grab modules from rc.conf
+BLACKLIST="${MOD_BLACKLIST[@]}"
+MODPROBE="/sbin/modprobe"
+LOGGER="/usr/bin/logger"
+RESOLVEALIAS="${MODPROBE} --resolve-alias"
+USEBLACKLIST="--use-blacklist"
+
+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="$BLACKLIST $(echo $disablemodules | sed 's|,| |g')"
+    fi
+fi
+
+#MODULES entries in rc.conf that begin with ! are blacklisted
+for mod in ${MODULES[@]}; do
+    if [ "${mod}" != "${mod#!}" ]; then
+        BLACKLIST="$BLACKLIST ${mod#!}"
+    fi
+done
+
+if [ "$MOD_AUTOLOAD" = "yes" -o "$MOD_AUTOLOAD" = "YES" ]; then
+  if [ -n "${BLACKLIST}" ]; then
+    # If an alias name is on the blacklist, load no modules for this device
+    if echo "${BLACKLIST}" | /bin/grep -q -e " $1 " -e "^$1 " -e " $1\$"; then
+      $LOGGER -p info -t "$(basename $0)" "Not loading module alias '$1' because it is blacklisted"
+      exit
+    fi
+    #sanitize the blacklist
+    BLACKLIST="$(echo "$BLACKLIST" | sed -e 's|-|_|g')"
+    # Try to find all modules for the alias
+    mods=$($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}" ] && $LOGGER -p local0.debug -t "$(basename $0)" "'$1' is not a valid module or alias name"
+    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 $deps; do
+        if echo "${BLACKLIST}" | /bin/grep -q -e " ${dep} " -e "^${dep} " -e " ${dep}\$"; then
+          if [ "${dep}" = "${mod}" ]; then
+            $LOGGER -p local0.info -t "$(basename $0)" "Not loading module '${mod}' for alias '$1' because it is blacklisted"
+          else
+            $LOGGER -p local0.info -t "$(basename $0)" "Not loading module '${mod}' for alias '$1' because its dependency '${dep}' is blacklisted"
+          fi
+          continue 2
+        fi
+      done
+      # modprobe usually uses the "blacklist" statements from modprobe.conf only to blacklist all aliases
+      # of a module, but not the module itself. We use --use-blacklist here so that modprobe also blacklists
+      # module names if we resolved alias names manually above
+      $MODPROBE $USEBLACKLIST ${mod}
+    done
+  else
+    $MODPROBE $USEBLACKLIST $1
+  fi
+fi
+# vim: set et ts=4: