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Let's use more _cleanup_ expressions. Various other modernizations. No
actual code changes, except for maybe a conversion to use heap memory
when generating an array of fds, instead of stack as before. Given that
fdstores are typically user controlled, that should be a wise idea.
When a service deactivates and is then automatically restarted via
Restart= we currently quickly transition through
SERVICE_DEAD/SERVICE_FAILED. Which is weird given it's not the
normal ("permanent") dead/failed state, but a transitory one we
immediately leave from again. We do this so that software that looks for
failures/successes can take notice, even if we restart as a consequence
of the deactivation.
Let's clean this up a bit: let's introduce two new states:
SERVICE_DEAD_BEFORE_AUTO_RESTART and SERVICE_FAILED_BEFORE_AUTO_RESTART
that are used for the transitory states. Both the SERVICE_DEAD and
SERVICE_DEAD_BEFORE_AUTO_RESTART will map to the high-level
UNIT_INACTIVE state though. (and similar for the respective failed
states). This means the high-level state machine won't change by this,
only the low-level one.
This clearly seperates the substates, which makes the state engine
cleaner, and allows clients to follow precisely whether we are in a
transitory dead/failed state, or a permanent one, by looking at the
service substate. Moreover it allows us to remove the 'n_keep_fd_store'
which so far we used to ensure the fdstore was not released during this
transitory dead/failed state but only during the permanent one. Since we
can now distinguish these states properly we can just use that.
This has been bugging me for a while. Let's clean this up.
Note that the unit restart logic is already nicely covered in the
testsiute, hence this adds no new tests for that.
And yes, this could be considered a compat break, but sofar we took the
liberty to make changes to the low-level state machine (i.e. SERVICE_xyz
states, sometimes called "substates") without considering this a bad
breakage – the high-level state machine (i.e. UNIT_xyz states) should
be considered API that cannot be changed.
- Drop Netdev= as it was removed in mkosi
- Always install python-psutil in the final image (required for networkd tests)
- Always Install python-pytest in the final image (required for ukify tests)
- Use the narrow glob for all centos python packages
- Drop the networkd mkosi config files (the default image can be used instead)
- Use ".conf" as the mkosi config file suffix everywhere
- Copy src/ to /root/src in the final image and set gdb substitute path in
.gdbinit to make gdb work properly
- ACLs are not set on generated directories anymore by default, so
we enable them explictly now so that when running unprivileged mkosi,
the user running mkosi can remove all generated files and directories.
- We don't explicitly set QemuHeadless= anymore as the option was removed
and made the default.
- We set the loglevel= kernel cmdline argument explicitly now as mkosi
doesn't set it by default anymore.
Make sure the ENOENT exception reintroduced by commit
9db7081d83d56cd2523b03f9eb9d67ef1c93c55f is not applied when the parser
is invoked by udevadm verify.
Let's open a file descriptor to the root directory and perform all
path operations using that file descriptor. On top of that, let's
make sure we pin the directory containing the file we want to work
on and use atomic copies and writes everywhere we can..
LOG_SET_PREFIX() sets a logging prefix for the current block. The
prefix is prepended to every logging message in the block, followed
by ": ". If a logging prefix is already configured, it is overridden
for the duration of the block, after which it is restored.
A use case for this macro is when we're operating on an image or
directory (using --root or --image). We can use LOG_SET_PREFIX() to
prefix all logging messages with the directory or image that we're
operating on.
This removes "sleep" invocations, and makes the notify access testcase a
lot more robust to runtime jitter. We use a pair of fifos in the fs to
sync instead.
Also various other improvoements, including comments.
(Also removes the unnecessary "no-qemu" restriction)
Unit names can be 255 characters long, not 256.
We first say "name prefix" and then continue with "unit prefix".
Confusing. Couldn't figure out which term is better hence settled on
"unit name prefix".
Let's skip going through all locally available time zones if we're built
with slow tests disabled, as that's quite slow, but do at least one test
with the UTC zone.
We shouldn't report that the file is empty if the stating fails. Let's do the
same as in other places, and just ignore the error and let the subsequent
operation fail.
This reverts commit 42a467b55219384c7c3b137ab3cc8b6a309a8a14.
We need to skip -ENOENT when loading udev rules because new files with rules
may be added or removed at any time, and the loading of rules is triggered
asynchronously. Even though the window is fairly narrow, udev shouldn't throw
an error if a rules file is removed.
