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And let's port over a couple of users to the new APIs.
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It always bothered me a bit that unit-name.[ch] contains so many
definitions that aren't really have much to do with unit nameing, for
example all the unit state definitions.
With this patch unit-name.[ch] is split into two: the file now contains
only the unit naming related operations, and everything else is split
out into a new set of files unit-def.[ch]. That's mostly unit state
stuff as well as dbus path and interface name operations.
No functional changes. This just moves code around.
(Note as both .c files include each other's headers this doesn't make
the build simpler or anything. All it does is make the C files a bit
shorter, and medicate my pretend OCD)
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Also drop the redundant states and make all similar changes too.
Thankfully the swap.c state engine is much simpler than mount.c's, hence
this should be easier to digest.
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This changes the mount unit state engine in the following ways:
1. The MOUNT_MOUNTING_SIGTERM and MOUNT_MOUNTING_SIGKILL are removed.
They have been pretty much equivalent to MOUNT_UNMOUNTING_SIGTERM and
MOUNT_UNMOUNTING_SIGKILL in what they do, and the outcome has been
the same as well: the unit is stopped. Hence, let's simplify things a
bit, and merge them. Note that we keep
MOUNT_REMOUNTING_{SIGTERM|SIGKILL} however, as those states have a
different outcome: the unit remains started.
2. mount_enter_signal() will now honour the SendSIGKILL= option of the
mount unit if it was set. This was previously done already when we
entered the signal states through a timeout, and was simply missing
here.
3. A new helper function mount_enter_dead_or_mounted() is added that
places the mount unit in either MOUNT_DEAD or MOUNT_MOUNTED,
depending on what the kernel thinks about the mount's state. This
function is called at various places now, wherever we finished an
operation, and want to make sure our own state reflects again what
the kernel thinks. Previously we had very similar code in a number of
places and in other places didn't recheck the kernel state. Let's do
that with the same logic and function at all relevant places now.
4. Rework mount_stop(): never forget about running control processes.
Instead: when we have a start (i.e. a /bin/mount) process running,
and are asked to stop, then enter the kill states for it, so that it
gets cleaned up. This fixes #6048. Moreover, when we have a reload
process running convert the possible states into the relevant
unmounting states, so that we can properly execute the requested
operation.
Fixes #6048
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Since busname units are only useful with kdbus, they weren't actively
used. This was dead code, only compile-tested. If busname units are
ever added back, it'll be cleaner to start from scratch (possibly reverting
parts of this patch).
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services
This is helpful for debugging/testing #5606.
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This makes strjoin and strjoina more similar and avoids the useless final
argument.
spatch -I . -I ./src -I ./src/basic -I ./src/basic -I ./src/shared -I ./src/shared -I ./src/network -I ./src/locale -I ./src/login -I ./src/journal -I ./src/journal -I ./src/timedate -I ./src/timesync -I ./src/nspawn -I ./src/resolve -I ./src/resolve -I ./src/systemd -I ./src/core -I ./src/core -I ./src/libudev -I ./src/udev -I ./src/udev/net -I ./src/udev -I ./src/libsystemd/sd-bus -I ./src/libsystemd/sd-event -I ./src/libsystemd/sd-login -I ./src/libsystemd/sd-netlink -I ./src/libsystemd/sd-network -I ./src/libsystemd/sd-hwdb -I ./src/libsystemd/sd-device -I ./src/libsystemd/sd-id128 -I ./src/libsystemd-network --sp-file coccinelle/strjoin.cocci --in-place $(git ls-files src/*.c)
git grep -e '\bstrjoin\b.*NULL' -l|xargs sed -i -r 's/strjoin\((.*), NULL\)/strjoin(\1)/'
This might have missed a few cases (spatch has a really hard time dealing
with _cleanup_ macros), but that's no big issue, they can always be fixed
later.
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This should be handled fine now by .dir-locals.el, so need to carry that
stuff in every file.
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When the user specifies "foo*" as unit name glob expression, we shouldn't turn this into "foo*.service". Hence: only
append a suffix if the specified string isn't a glob expression.
Fixes: #2397
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My previous patch to only include what we use accidentially placed
the added inlcudes in non-sorted order.
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This is a cleaned up result of running iwyu but without forward
declarations on src/basic.
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As discussed at systemd.conf 2015 and on also raised on the ML:
http://lists.freedesktop.org/archives/systemd-devel/2015-November/034880.html
This removes the two XyzOverridable= unit dependencies, that were
basically never used, and do not enhance user experience in any way.
Most folks looking for the functionality this provides probably opt for
the "ignore-dependencies" job mode, and that's probably a good idea.
Hence, let's simplify systemd's dependency engine and remove these two
dependency types (and their inverses).
The unit file parser and the dbus property parser will now redirect
the settings/properties to result in an equivalent non-overridable
dependency. In the case of the unit file parser we generate a warning,
to inform the user.
The dbus properties for this unit type stay available on the unit
objects, but they are now hidden from usual introspection and will
always return the empty list when queried.
This should provide enough compatibility for the few unit files that
actually ever made use of this.
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Snapshots were never useful or used for anything. Many systemd
developers that I spoke to at systemd.conf2015, didn't even know they
existed, so it is fairly safe to assume that this type can be deleted
without harm.
The fundamental problem with snapshots is that the state of the system
is dynamic, devices come and go, users log in and out, timers fire...
and restoring all units to some state from the past would "undo"
those changes, which isn't really possible.
Tested by creating a snapshot, running the new binary, and checking
that the transition did not cause errors, and the snapshot is gone,
and snapshots cannot be created anymore.
New systemctl says:
Unknown operation snapshot.
Old systemctl says:
Failed to create snapshot: Support for snapshots has been removed.
IgnoreOnSnaphost settings are warned about and ignored:
Support for option IgnoreOnSnapshot= has been removed and it is ignored
http://lists.freedesktop.org/archives/systemd-devel/2015-November/034872.html
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string-util.[ch]
There are more than enough calls doing string manipulations to deserve
its own files, hence do something about it.
This patch also sorts the #include blocks of all files that needed to be
updated, according to the sorting suggestions from CODING_STYLE. Since
pretty much every file needs our string manipulation functions this
effectively means that most files have sorted #include blocks now.
Also touches a few unrelated include files.
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Preparation to allow systemctl to query the list of unit states.
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Let's add a way to get the type-specific D-Bus interface of a unit from
either its type or name to src/basic/unit-name.[ch]. That way we can
share it with the client side, where it is useful in tools like cgls or
machinectl.
Also ports over machinectl to make use of this.
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Fix a memory leak introduced by 2fc09a9c. 's' is used twice in this
function, and if free_and_strdup() fails, the pointer is left untouched.
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Use free_and_strdup() where appropriate and replace equivalent,
open-coded versions.
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basic/ can be used by everything
cannot use anything outside of basic/
libsystemd/ can use basic/
cannot use shared/
shared/ can use libsystemd/
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