Now that we translate in both directions (from enum to string, and
string to enum) let's just make the thing a proper enum with a proper
string table, like we generally do.
If a source dir doesn't exist, mention this, but continue.
This is useful to permit generic definitions that apply to all kinds of
trees, where some parts might remain unpopulated.
Back at Plumbers 2022 we discussed that we should push people towards
using the .sysext.raw and .confext.raw for their DDIs if they are
extension images. Let's actually support that, by chopping off these
suffixes when turning file names into "pretty image names".
This adds --make-ddi=confext, --make-ddi=sysext, --make-ddi=portable, to
make it really easiy to generate DDIs of the specified class. It
it's ultimately just a fancy wrapper around some defaults and in
particular --definitions=.
This makes it very easy to generate a confext:
$ systemd-repart -C --private-key=privkey.pem --certificate=cert.crt -s mytree/ mytree.confext.raw
This specifies a directory to which CopyFiles= is considered relative.
If unset defaults to the --root=/--image= setting, or host / otherwise.
This is very similar to --root= but is much more focussed: it is really
and exclusively about CopyFiles= (and related settings such as
ExcludeFiles=) and does not affect any of the settings, i.e. it doesn't
affect CopyBlocks=, the machine ID/seed handling, or where definitions
are read from.
In fact, --root= and --copy-source= may be combined for example to
use the machine ID and similar from one tree, but the copy the files
from another.
Introduce a new enum value EMPTY_UNSET to which arg_empty now is set
initially. Only after we finished parsing the command line we'll now set
this to EMPTY_REFUSE as before.
This prepares ground for later changes, where we then can make different
decisions after havig all input from the command line.
As of now this doesn't change behaviour of systemd-repart, it just
rearranges things a bit.
When --dry-run=yes is used it makes sense to spawn a pager to look at
the report it provides you with about what it is about to do. Hoewver,
when we are actually doing it, then the output is more in the category
of "logs" than "review material", and logs we generally don't page when
we generate them.
Let's modernize and clean up search_and_fopen a bit: let's add support
for regular open() (instead of fopen()), as well as access() (if caller
just wants to check if a file exists without opening it.
This unifies much of the code involved, which previously was duplicated
in search_and_fopen() and search_and_fopen_nulstr()
mount_option_supported() will call fsopen() which will probe the
kernel filesystem module. This means that we'll suddenly start
probing filesystem modules when running generators as those determine
which mount options to use. To prevent generators from loading kernel
filesystem modules as much as possible, let's always first check the
hardcoded list of filesystem which we know support a feature before
falling back to asking the kernel.
The option was introduced with systemd v250 although it went
undocumented. It effectively sits between Default and OneShot, in term
of priority.
It is repeatedly updated as long as loader.conf default is "@saved" and
the OneShot is not set.
v2:
- squash some typos
v3:
- special mention to default @saved + loader.conf reference
- reword update side, to avoid misleading that it's needlessly
overwritten
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
The variable was introduced with systemd v250 although it went
completely undocumented, even though sd-boot will honour and print it
separately (from the loader.conf one) in the boot help screen.
Document it in the systemd-boot and hint about it in loader.conf manual
pages.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Grepping around showed a few extra entries that are not listed in the
remove_loader_variables() function. Namely:
- BootNext
- OsIndications
- LoaderConfigConsoleMode
- LoaderEntryLastBooted
Of which the latter two are systemd specific, even though they are
undocumented. Ensure they're removed - follow-up commits will add
documentation references.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
systemd's own cgroup hierarchy is special to us, we use it to actually
manage processes. Because of that many calls tha apply to cgroups are
only ever called with the SYSTEMD_CGROUP_CONTROLLER as controller
argument. Let's hence remove the argument altogether.
This in particular touches the kill and xattr routines.
This changes no behaviour, we just drop an argument that is always set
to the same value anyway.
This is preparation to eventually getting rid of the cgroupvs1, because
on cgroupvs2 the cgroup paths do not change for different controllers,
there's only a single hierarchy there.
Currently some of the code base check for the variable presence before
removing it, and some do not.
More so, in all cases (being updated) we're dealing with non-volatile
variables where changing those attribute to NVRAM wear out.
From what information I could find, there is no definitive answer if the
UEFI implementation will write to the NVRAM even when the variable is
missing.
So add a simple helper that checks for the variable presence before
removing it. While also having a bit cleaner API than the current
efivar_set(..., NULL, ...);
efivar_unset() follows the design from efivar_set*() where it returns an
EFI_STATUS even though its (presently) unused.
v2:
- add inline comment, use early return
v3:
- typos? typos!
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
In sd-dhcp-client.c, we do not set the option in the DHCPDISCOVER
message when anonymized, and the specified address is ignored
anyway. So, this does not change the behavior, but suppress
misleading debugging log in dhcp4_set_request_address().
Luca Boccassi
Lennart Poettering
Mike Yuan
Daan De Meyer
Emil Velikov
Yu Watanabe