SD_ID128_ALLF to test if a 128bit ID is set to all 0xFF bytes, and to
initialize one to all 0xFF.
+ * After loading the SELinux policy systemd will now recursively relabel
+ all files and directories listed in
+ /run/systemd/relabel-extra.d/*.relabel (which should be simple
+ newline separated lists of paths) in addition to the ones it already
+ implicitly relabels in /run, /dev and /sys. After the relabelling is
+ completed the *.relabel files (and /run/systemd/relabel-extra.d/) are
+ removed. This is useful to permit initrds (i.e. code running before
+ the SELinux policy is in effect) to generate files in the host
+ filesystem safely and ensure that the correct label is applied during
+ the transition to the host OS.
+
* KERNEL API BREAKAGE: Linux kernel 4.18 changed behaviour regarding
mknod() handling in user namespaces. Previously mknod() would always
fail with EPERM in user namespaces. Since 4.18 mknod() will succeed