journal-upload: add state file directory to ReadWritePaths (#5578)

The commit c7fb922d6250543ba5462fa7a6ff03cc8f628e94 prohibits
journal-upload to save its state in /var/lib/systemd/journal-upload/state,
thus the daemon fails and outputs the following error message even if
the directory is not read-only file system
```Cannot save state to /var/lib/systemd/journal-upload/state: Read-only file system```
This commit adds the permission the daemon to write the state file.

diff --git a/units/systemd-journal-upload.service.in b/units/systemd-journal-upload.service.in
index b9eab21..d00b929 100644 (file)
--- a/units/systemd-journal-upload.service.in
+++ b/units/systemd-journal-upload.service.in
@@ -28,6 +28,7 @@ RestrictRealtime=yes
 RestrictNamespaces=yes
 RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
 SystemCallArchitectures=native
+ReadWritePaths=/var/lib/systemd/journal-upload
 
 # If there are many split up journal files we need a lot of fds to
 # access them all and combine