NEWS: start putting together an entry for v237
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Lennart Poettering
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@ -142,3 +142,10 @@ Lukáš Říha <cedel@centrum.cz>
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Alan Robertson <aroberts@zen.iomart.com> <alanjrobertson@gmail.com>
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Martin Steuer <martinsteuer@gmx.de>
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Matthias-Christian Ott <ott@mirix.org> <ott@users.noreply.github.com>
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Larry Bernstone <lbernstone@gmail.com>
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Michał Szczepański <skrzatu@hotmail.com> <skrzatu@gmail.com>
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Tomasz Bachorski <tomasz.bachorski@x7f.io> <34866781+nulsoh@users.noreply.github.com>
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Zachary Winnerman <33329648+winnerman-pythian@users.noreply.github.com>
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Vladislav Vishnyakov <split7fire@yandex.ru>
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Robert Kolchmeyer <rkolchmeyer@google.com> <rkolchmeyer@users.noreply.github.com>
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George Gaydarov <git@gg7.io> <gg7@users.noreply.github.com>
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137
NEWS
137
NEWS
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@ -19,6 +19,143 @@ CHANGES WITH 237 in spe:
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don't exist yet, and only then the argument string is written to the
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file.
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* A new environment variable $SYSTEMD_OFFLINE is now understood by
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systemctl. It takes a boolean argument. If on, systemctl assumes it
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operates on an "offline" OS tree, and will not attempt to talk to the
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service manager. Previously, this mode was implicitly enabled if a
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chroot() environment was detected, and this new environment variable
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now provides explicit control.
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* .path and .socket units may now be created transiently,
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too. Previously only service, mount, automount and timer units were
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supported as transient units. The systemd-run tool has been updated
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to expose this new functionality, you may hence use it now to bind
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arbitrary commands to path or socket activation on-the-fly from the
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command line. Moreover, for the unit types already supporting
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transient operation most properties are now hooked up.
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* The systemd-mount command gained support for a new --owner= parameter
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which takes a user name, which is then resolved and included in uid=
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and gid= mount options string of the file system to mount.
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* A new unit condition ConditionControlGroupController= has been added
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that checks whether a specific cgroup controller is available.
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* Unit files, udev's .link files, and systemd-networkd's .netdev and
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.network files all gained support for a new condition
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ConditionKernelVersion= for checking against specific kernel
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versions.
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* In systemd-networkd, the [IPVLAN] section in .netdev files gained
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support for configuring device flags in the Flags= setting In the
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same files, the [Tunnel] section gained support for configuring
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AllowLocalRemote=. The [Route] section in .network files gained
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support for configuring InitialCongestionWindow=,
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InitialAdvertisedReceiveWindow= and QuickAck=. The [DHCP] section now
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understands RapidCommit=.
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* systemd-networkd's DHCPv6 support gained support for Prefix
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Delegation.
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* sd-bus gained support for a new "watch-bind" feature. When this
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feature is enabled, an sd_bus connection may be set up to connect to
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an AF_UNIX socket in the file system as soon as it is created. This
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functionality is useful for writing early-boot services that
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automatically connect to the system bus as soon as it is started,
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without ugly time-based polling. systemd-networkd and
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systemd-resolved have been updated to make use of this
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functionality. busctl exposes this functionality in a new
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--watch-bind= command line switch.
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* sd-bus will now optionally synthesize a local "Connected" signal as
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soon as a D-Bus connection is set up fully. This message mirrors the
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already existing "Disconnected" signal which is synthesized when the
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connection is terminated. This signal is generally useful but
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particularly handy in combination with the "watch-bind" feature
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described above. Synthesizing of this message has to be requested
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explicitly through the new API call sd_bus_set_connected_signal(). In
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addition a new call sd_bus_is_ready() has been added that checks
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wether a connection is fully set up (i.e. between the "Connected" and
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"Disconnected" signals).
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* sd-bus gained two new calls sd_bus_request_name_async() and
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sd_bus_release_name_async() for asynchronously registering bus
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names. Similar, there is now sd_bus_add_match_async() for installing
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a signal match asynchronously. All of systemd's own services have
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been updated to make use of these calls. Doing these operations
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asynchronously has two benefits: it reduces the risk of deadlocks in
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case of cyclic dependencies between bus services, and it speeds up
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service initialization since synchronization points for bus
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round-trips are removed.
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* sd-bus gained two new calls sd_bus_match_signal() and
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sd_bus_match_signal_async(), which are similar to sd_bus_add_match()
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and sd_bus_add_match_async() but instead of taking a D-Bus match
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string take match fields as normal function parameters.
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* sd-bus gained two new calls sd_bus_set_sender() and
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sd_bus_message_set_sender() for setting the sender name of outgoing
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messages (either for all outgoing messages or for just one specific
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one). These calls are only useful in direct connections as on
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brokered connections the broker fills in the sender anyway,
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overwriting whatever the client filled in.
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* sd-event gained a new pseudo-handle that may be specified on all API
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calls where an "sd_event*" object is expected: SD_EVENT_DEFAULT. When
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used this refers to the default event loop object of the calling
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thread. Note however that this does not implicitly allocate one —
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which has to be done prior by using sd_event_default(). Similar
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sd-bus gained a three new pseudo-handles SD_BUS_DEFAULT,
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SD_BUS_DEFAULT_USER, SD_BUS_DEFAULT_SYSTEM that may be used to refer
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to the default bus of the specified type of the calling thread. Here
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too this does not implicitly allocate bus connection objects, this
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has to be done prior with sd_bus_default() and friends.
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* sd-event gained a new call pair
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sd_event_source_{get|set}_io_fd_own(). This may be used to optionally
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automatically close the file descriptor an IO event source watches
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when the event source is destroyed.
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* systemd-networkd gained support for natively configuring WireGuard
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connections.
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* Already in previous versions systemd synthesized user records both
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for the "nobody" (UID 65534) and "root" (UID 0) users in nss-systemd
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and internally. In order to simplify distribution-wide renames of the
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"nobody" user (like it is planned in Fedora: nfsnobody → nobody), a
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new transitional flag file has been added: if
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/etc/systemd/dont-synthesize-nobody exists synthesizing of the 65534
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user and group record within the systemd codebase is disabled.
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* systemd-notify gained a new --uid= option for selecting the source
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user/UID to use for notification messages sent to the service
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manager.
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* There's now a "systemd-analyze service-watchdogs" command for turning
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on or off the per-service watchdogs system-wide (i.e. the concept you
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configure in WatchdogSec=), for debugging purposes. There's also a
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kernel command line option systemd.service_watchdogs= for controlling
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the same.
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Contributions from: Adam Duskett, Alan Jenkins, Alexander Kuleshov,
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Alexis Deruelle, Armin Widegreen, bleep_blop, Bruce A. Johnson, Chris
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Down, Colin Walters, Dimitri John Ledkov, Dmitry Rozhkov, Ewout van
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Mansom, Felipe Sateler, Franck Bui, Frantisek Sumsal, George Gaydarov,
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Gianluca Boiano, Hans-Christian Noren Egtvedt, Hans de Goede, Henrik
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Grindal Bakken, Jan Alexander Steffens, Jan Klötzke, jdkbx, Jérémy
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Rosen, Jerónimo Borque, John Lin, John Paul Herold, Jonathan Rudenberg,
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Jörg Thalheim, Ken (Bitsko) MacLeod, Larry Bernstone, Lennart
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Poettering, Lucas Werkmeister, Maciej S. Szmigiero, Marek Čermák,
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Martin Pitt, Mathieu Malaterre, Matthew Thode, Matthias-Christian Ott,
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Max Harmathy, Michael Biebl, Michal Koutný, Michal Sekletar, Michał
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Szczepański, Mike Gilbert, Nathaniel McCallum, Olaf Hering, Olivier
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Schwander, Patrik Flykt, Paul Cercueil, Peter Hutterer, Piotr Drąg,
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Reverend Homer, Robert Kolchmeyer, Samuel Dionne-Riel, Sergey
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Ptashnick, Shawn Landden, Susant Sahani, Sylvain Plantefève, Thomas
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Huth, Tomasz Bachorski, Vladislav Vishnyakov, Wieland Hoffmann, Yu
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Watanabe, Zachary Winnerman, Zbigniew Jędrzejewski-Szmek, Дамјан
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Георгиевски, Дилян Палаузов
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— Berlin, 2018-XX-XX
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CHANGES WITH 236:
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