Behaviour is not identical, as shown by the tests in test-strv.
The combination of EXTRACT_UNQUOTE without EXTRACT_RELAX only appears in
the test, so it doesn't seem particularly important. OTOH, the difference
in handling of squished parameters could make a difference. New behaviour
is what both bash and python do, so I think we can ignore this corner case.
This change has the following advantages:
- the duplication of code paths that do a very similar thing is removed
- extract_one_word() / strv_split_extract() return a proper error code.
The tricky part here is that the function is not allowed to fail in this code
path. Initially, I wanted to change the return value to allow it to fail, but
this cascades through all the places where fstab_test_option() and friends are
used; updating all those sites would be a lot of work. And since quoting is not
allowed here, a simple loop with strcspn() is easy to do.
sd_seat_get_sessions() would return 0 in the 'n_uids' (now 'ret_n_uids') output
parameter when 'uid' (now 'ret_uids') was passed as NULL.
While at it, drop FOREACH_WORD() use.
Also use any whitespace as separator. In practice this shouldn't matter, since
logind always uses spaces, but it seems nicer to not specify this explicitly,
and the default is more flexible.
I had to move STRV_MAKE to macro.h. There is a circular dependency between
extract-word.h, strv.h, and string-util.h that makes it hard to define the
inline function otherwise.
This fixes the following issue:
- If a DHCP lease does not contains router option, then routes with
`Gateway=_dhcp` setting introduce unexpected results.
This also makes several failure paths critical. And adjust warnings when
classless routes are provided.
This is cleaner that way given that we create our own half-virtualizes
device tree, and really shouldn't pull selinux labelling and access
control into that, we can only lose, in particular as our overmounted
/sys/ actually lacks /sys/fs/selinux.
(This fixes udev test woes introduced by #16821 where suddenly the test
would fail because libselinux assumed selinux was on, but selinuxfs
wasn't actually available)
socket_instantiate_service() was doing unit_ref_set(), and the caller was
immediately doing unit_ref_unset(). After we get rid of this, it doesn't seem
worth it to have two functions.
