Harden check for used modules in hostonly mode

Make sure that we do not accept module name which is substring of
some other module name. This resulted in piix being mistakenly loaded
together with ata_piix. It completely broke DVD access here.

Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>

diff --git a/dracut-functions b/dracut-functions
index a1873c5dedd9dd86f0ede78d267316208ba3267d..c9affc7448079c4a18683d64bc4b1d6cd8d9525e 100755 (executable)
--- a/dracut-functions
+++ b/dracut-functions
@@ -657,7 +657,7 @@ instmods() {
                [[ -f $initdir/$1 ]] && { shift; continue; }
                # If we are building a host-specific initramfs and this
                # module is not already loaded, move on to the next one.
-               [[ $hostonly ]] && ! grep -q "${mod//-/_}" /proc/modules && \
+               [[ $hostonly ]] && ! grep -qe "\<${mod//-/_}\>" /proc/modules && \
                ! echo $add_drivers | grep -qe "\<${mod}\>" &&  {
                    shift; continue; 
                }