[gentoo-dev] [PATCH 2/3] tmpfiles.eclass: Explicit warn on ROOT != / to avoid breakage

["Michał Górny" <mgorny@gentoo.org>]

---
 eclass/tmpfiles.eclass | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/eclass/tmpfiles.eclass b/eclass/tmpfiles.eclass
index 9cf040de987f..018ea45d4182 100644
--- a/eclass/tmpfiles.eclass
+++ b/eclass/tmpfiles.eclass
@@ -110,7 +110,18 @@ tmpfiles_process() {
 	[[ ${#} -gt 0 ]] || die "${FUNCNAME}: Must specify at least one filename"
 
 	# Only process tmpfiles for the currently running system
-	[[ ${ROOT} == / ]] || return 0
+	if [[ ${ROOT} != / ]]; then
+		ewarn "Warning: tmpfiles.d not processed on ROOT != /. If you do not use"
+		ewarn "a service manager supporting tmpfiles.d, you need to run"
+		ewarn "the following command after booting (or chroot-ing with all"
+		ewarn "appropriate filesystems mounted) into the ROOT:"
+		ewarn
+		ewarn "  tmpfiles --create"
+		ewarn
+		ewarn "Failure to do so may result in missing runtime directories"
+		ewarn "and failures to run programs or start services."
+		return
+	fi
 
 	if type systemd-tmpfiles &> /dev/null; then
 		systemd-tmpfiles --create "$@"
-- 
2.13.0.rc1