When running "bootctl install" on an empty --root= dir, we don't know
which token to use, and the operation will fail. Make sure to return an
explicit error about this.
This introduces a recognizable low-level error for this (EUNATCH), and
then turns this into a recognizable Varlink error.
(I made sure that the old low-level error EINVAL wasn't load-bearing,
and it is safe to change this.)
Now that the necessary functions from log.h have been moved to macro.h,
we can stop including log.h in macro.h. This requires modifying source
files all over the tree to include log.h instead.
No functional change, just preparation for later commits.
These can be used in kernel-install later.
Note, unlike the our usual coding style, the arguments for
boot_entry_token_ensure() and parse_boot_entry_token_type() are
referenced, updated, and may freed, hence, always pass initialized
values. That's why they are not named as 'ret_xyz'.
Duncan Overbruck
Lennart Poettering
Lennart Poettering
Daan De Meyer
Yu Watanabe