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When looking at configuration, often a user wants to suppress the comments and
just look at the parts that actually configure something, roughly equivalent to
systemd-analyze cat-config … | rg -v '^(#|;|$)
This switch implements this natively, skipping lines that start with a comment
character or only contain whitespace.
For formats that have section headers, section headers are skipped, if only
followed by stuff that would be skipped. (The last section header is printed
when we're about to print some actual output.)
Note that the caller doesn't know if the format has headers or not. We do format
type detection in pretty-print.c. So the caller only specifies tldr=true|false, and
conf_files_cat() figures out if the format has headers and whether those should
be handled specially.
The comments that show the file name are always printed, even if all of the file
is suppressed.
This is a partial answer to the discussions in
https://github.com/systemd/systemd/pull/28919,
https://github.com/systemd/systemd/pull/29248. If the default config is shown in
config files, the user can conveniently use '--tldr' to show the relevant parts.
0895e87348 removed the last (only?) use of
CAT_MAIN_FILE_OPTIONAL, except for tests. All callers first check if the main
file exists on their own, so this code was effectively dead.
I want to repopulate the enum in later commits, so a dummy flag is added
to allow the code to compile.
The parsing is done after the image has been opened, not before, as it
cannot be done on an block device. Also fix returning on any error for
ExtensionDirectories, not just ENOENT.
Follow-up for 55ea4ef096
We already had a similar check that was removed, see
8340b762e4 (*). The kernel supports loading of a
resume image from a different kernel version. This makes sense, because the
goal of "resume" is to replace the running system by a saved memory image, so
it doesn't really matter that the short-lived kernel is different.
By removing the check, we make the process more reliable: for example, the user
may select a different kernel from a list, or not have the previously running
kernel in /boot at all, etc. Requiring the exact same kernel version makes the
process more fragile for no benefit.
Similar reasoning holds for the image version: the image may be updated, and
for example an older kernel+initrd might be used, with an embedded VERSION_ID
that is not the latest. This is fine, and the check is not useful.
I left the check for ID/IMAGE_ID: we probably don't want to use the resume
image if the hibernation was done from a different installation.
(Note: why not check VERSION_ID/IMAGE_VERSION? Because of the following
scenario: a user has an installation of Fedora 35, and they upgrade to Fedora
36, which means that the os-release file on disk gets replaced and now
specifies VERSION_ID=36. But the running kernel is not replaced, and its
package is not removed because the running kernel version is never removed, so
we still have a boot entry that in initrd-release says VERSION_ID=35. Without
rebooting, the user does hibernation. When resuming, we want to resume, no
matter if one of the new entries with VERSION_ID=36 or one of the old entries
with VERSION_ID=35 is picked in the boot loader menu.
If the installation is image-based, i.e. it has IMAGE_ID+IMAGE_VERSION, the
situation is similar: after an upgrade, we may still have an boot entry from
before the upgrade. Using an older kernel+initrd to boot and switch-root into a
newer installation is supported and is rather common.
In fact, it is a rather common situation that the version reported by the boot
entry (or stored internally in the initrd-release in the initrd) does not match
the actual system on disk. Generally, this metadata is saved when the boot menu
entry is written and does not reflect subsequent upgrades. Various
distributions generally keep at least 3 kernels after a upgrade, and during an
upgrade only install one new, which means that after a major upgrade, generally
there will be at least two kernels which have mismatched version information.)
OTOH, I think it is useful to *write* all the details to the EFI var. As
discussed in https://github.com/systemd/systemd/issues/29037, we may want to
show this information in the boot loader. It is also useful for debugging.
(*) Also again discussed and verified in
https://github.com/systemd/systemd/pull/27330#discussion_r1234332080.
", ignored" is dropped, since this failure is likely to cause the following
check to fail. Better not to say anything then to say the misleading thing.
This reverts commit 0e3cc902fa.
Fixes#10288.
I have confirmed that this does now fix cross-compilation.
It appears that changes upstream in Meson, probably mesonbuild/meson#5263, have made the original MR, #10289, work now.
This needs to be tested to ensure that it doesn't break Travis CI like when it was reverted in #10361.
Let's support enumerating over devices that match all of the given
properties instead of any of the given properties by adding a new
function sd_device_enumerator_add_match_property_required() which
specifies properties that should all be matched instead of just one.
Fixes#28372
It might happen that a method call handler already generated an error
reply and then still propagated the error back to the varlink logic.
Let's not try to generate a 2nd reply from that error code then, but
simply proceed without. This simplifies handling of errors in method
call handlers, because they can uniformly return errno-style error
codes, and only if they want return a full Varlink errror.
Various Varlink calls only make sense if they are called with more=true
(i.e. in a mode where multiple replies are expected to be sent). If a
method call assumes it is called with more (manifested in the fact it
calls varlink_notify(), the call to reply to such messages) let's return
a recognizable error code for the violated expectation.
This adds a new error for this, org.varlink.service.ExpectedMore. Note
we are squatting the official org.varlink.service namespace, but for
such a basic thing it makes sense to add it there.
Requested in https://github.com/systemd/systemd/pull/28582#issuecomment-1673300596.
The is the last requested changed, so fixes#28771.
90-loaderentry.install is modified to also check $KERNEL_INSTALL_CONF_ROOT
when looking for the devicetree file. For normal use this is probably not
needed, but it's nice to be consistent and it also makes it much easier to
write the tests.
In tests, also do 'ukify inspect' now that we have it.
Each filename should be a separate <term>, so that they separated in the
formatted text. Also, we list files in documentation in priority order, but
here they were in reverse order. Also, rework the description of
$KERNEL_INSTALL_CONF_ROOT to say that it makes kernel-install not look at the
other files. This requires some more words, so make this a separate paragraph
and refer from individual items to it. Also, drop some sentences with "Read by
...", they were already outdated.
Partial fix for #28771.
Co-authored-by: Emil Renner Berthing <systemd@esmil.dk>
/boot is not trusted, so we shouldn't use load files from there. Also, space in
/boot is limited, so it doesn't make sense to install the files under one
location there and then copy them to a different location. We should only copy
the files from /usr somewhere and then install it in the appropriate place under
/boot.
Also use "/usr/lib" instead of the "/lib" prefix. We don't support unmerged-user
anymore.
Addresses some of the feedback in
https://github.com/systemd/systemd/pull/28582#discussion_r1285820556.
One of the steps in setting up NTP is to enable/disable the
'systemd-timesyncd.service' and then perform a daemon reload.
we use an extra-long timeout for reload in timedated as same as used in
systemd daemon reload to avoiding certain situation have longer reload
times (which exceed the 25 second default timeout used for
dbus-communication), potentially leading to setting NTP failure.
Let's show which fds are closed as part of the left-over fd set logic on
daemon reload/reexec cycles.
This is useful to debug accidentally unclaimed fds.
We have the "tasks.max" cgroup attribute only if we run in a cgroup
namespace, but not on the host. Hence let's handle ENODATA silently
simply to reduce the debug noise generated.
Follow-up for bf366954fa
Before this commit, we hardcode "prefix" to the widest field
possible in the table. However, there's no guarantee that the
field would actually be used/added, so it could potentially
result in misalignment. Therefore, let's set the minimum width
of the cell to the hardcoded width too.
