[Buildroot] [git commit branch/2021.02.x] package/swupdate: prevent systemd from removing swupdate tmp folders

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=d803ab285f7b1bb48edab8540009c8d383094d22
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2021.02.x

Ensure these folders are excluded from being cleaned up by systemd.

Fixes:
[ERROR] : SWUPDATE failed [0] ERROR : I cannot open /tmp/scripts/format.lua 2
[ERROR] : SWUPDATE failed [0] ERROR : extracting script to /tmp/scripts/ failed
[ERROR] : SWUPDATE failed [1] Installation failed !

Signed-off-by: James Hilliard <james.hilliard1 at gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
(cherry picked from commit daa46718e0642a92c59edb166ced1ff1911b0043)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 package/swupdate/swupdate.mk            | 2 ++
 package/swupdate/tmpfiles-swupdate.conf | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/package/swupdate/swupdate.mk b/package/swupdate/swupdate.mk
index 6c9e110bc4..4a735c3cfb 100644
--- a/package/swupdate/swupdate.mk
+++ b/package/swupdate/swupdate.mk
@@ -221,6 +221,8 @@ define SWUPDATE_INSTALL_INIT_SYSTEMD
 	$(SWUPDATE_INSTALL_COMMON)
 	$(INSTALL) -D -m 644 package/swupdate/swupdate.service \
 		$(TARGET_DIR)/usr/lib/systemd/system/swupdate.service
+	$(INSTALL) -D -m 644 package/swupdate/tmpfiles-swupdate.conf \
+		$(TARGET_DIR)/usr/lib/tmpfiles.d/tmpfiles-swupdate.conf
 endef
 define SWUPDATE_INSTALL_INIT_SYSV
 	$(SWUPDATE_INSTALL_COMMON)
diff --git a/package/swupdate/tmpfiles-swupdate.conf b/package/swupdate/tmpfiles-swupdate.conf
new file mode 100644
index 0000000000..4743672fcc
--- /dev/null
+++ b/package/swupdate/tmpfiles-swupdate.conf
@@ -0,0 +1,2 @@
+X /tmp/datadst
+X /tmp/scripts