build-gnu.sh: Enable test/df/no-mtab-status.sh

Author: oech3

util/build-gnu.sh

@@ -4,7 +4,7 @@
 
 # spell-checker:ignore (paths) abmon deref discrim eacces getlimits getopt ginstall inacc infloop inotify reflink ; (misc) INT_OFLOW OFLOW
 # spell-checker:ignore baddecode submodules xstrtol distros ; (vars/env) SRCDIR vdir rcexp xpart dired OSTYPE ; (utils) greadlink gsed multihardlink texinfo CARGOFLAGS
-# spell-checker:ignore openat TOCTOU CFLAGS
+# spell-checker:ignore openat TOCTOU CFLAGS tmpfs
 
 set -e
 
@@ -171,6 +171,8 @@ grep -rl '\$abs_path_dir_' tests/*/*.sh | xargs -r "${SED}" -i "s|\$abs_path_dir
 "${SED}" -i 's/^print_ver_.*/require_selinux_/' tests/runcon/runcon-no-reorder.sh
 "${SED}" -i 's/^print_ver_.*/require_selinux_/' tests/chcon/chcon-fail.sh
 
+# Avoid LD_PRELOAD (able to merge this to GNU?)
+sed -i -e 's|.*maybe LD_PRELOAD.*||' -e's|^export LD_PRELOAD=.*|function df { unshare -rm bash -c "mount -t tmpfs tmpfs /proc \&\& command df \"\$@\""; }|' tests/df/no-mtab-status.sh
 # We use coreutils yes
 "${SED}" -i "s|--coreutils-prog=||g" tests/misc/coreutils.sh
 # Different message