In situations where a service fails to start, systemd suggests the user to
use "journalctl -xe" to get details about the failure. While running this
command does provide some additional details, most of the information is
similar to what was already printed when the service fails.
often the actual reason for the failure can be found in the logs of the
service that fails to start.
This patch updates the wording to suggest using "-u" to view the service
logs instead.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
If we're using a set with _put_strdup(), most of the time we want to use
string hash ops on the set, and free the strings when done. This defines
the appropriate a new string_hash_ops_free structure to automatically free
the keys when removing the set, and makes set_put_strdup() and set_put_strdupv()
instantiate the set with those hash ops.
hashmap_put_strdup() was already doing something similar.
(It is OK to instantiate the set earlier, possibly with a different hash ops
structure. set_put_strdup() will then use the existing set. It is also OK
to call set_free_free() instead of set_free() on a set with
string_hash_ops_free, the effect is the same, we're just overriding the
override of the cleanup function.)
No functional change intended.
