fix(base): fallback when shell-interpreter is not included

Follow-up to e139edb

When dracut is invoked with -m and shell-interpreter is not listed,
than shell interpreter is not included.

The base module is the only module that is absolutely mandatory
(and its dependencies).

shell-intrepreter dracut module is optional - the same way e.g.
dash module is optional.

diff --git a/modules.d/99base/module-setup.sh b/modules.d/99base/module-setup.sh
index 19d209de75ce566f9c488e6c9b761fabe6fe114a..5627edf6b3f435bba2dc03560ec4b4ad7a887dc8 100755 (executable)
--- a/modules.d/99base/module-setup.sh
+++ b/modules.d/99base/module-setup.sh
@@ -19,6 +19,9 @@ install() {
     ln -s dracut-util "${initdir}/usr/bin/dracut-getarg"
     ln -s dracut-util "${initdir}/usr/bin/dracut-getargs"
 
+    # fallback when shell-interpreter is not included
+    [ ! -e "${initdir}/bin/sh" ] && inst_simple "${initdir}/bin/sh" "/bin/sh"
+
     # add common users in /etc/passwd, it will be used by nfs/ssh currently
     # use password for hostonly images to facilitate secure sulogin in emergency console
     [[ $hostonly ]] && pwshadow='x'