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Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 252 |
1 files changed, 252 insertions, 0 deletions
@@ -1,7 +1,259 @@ systemd System and Service Manager +CHANGES WITH 236: + + * The modprobe.d/ drop-in for the bonding.ko kernel module introduced + in v235 has been extended to also set the dummy.ko module option + numdummies=0, preventing the kernel from automatically creating + dummy0. All dummy interfaces must now be explicitly created. + + * Unknown '%' specifiers in configuration files are now rejected. This + applies to units and tmpfiles.d configuration. Any percent characters + that are followed by a letter or digit that are not supposed to be + interpreted as the beginning of a specifier should be escaped by + doubling ("%%"). (So "size=5%" is still accepted, as well as + "size=5%,foo=bar", but not "LABEL=x%y%z" since %y and %z are not + valid specifiers today.) + + * systemd-resolved now maintains a new dynamic + /run/systemd/resolve/stub-resolv.conf compatibility file. It is + recommended to make /etc/resolv.conf a symlink to it. This file + points at the systemd-resolved stub DNS 127.0.0.53 resolver and + includes dynamically acquired search domains, achieving more correct + DNS resolution by software that bypasses local DNS APIs such as NSS. + + * The "uaccess" udev tag has been dropped from /dev/kvm and + /dev/dri/renderD*. These devices now have the 0666 permissions by + default (but this may be changed at build-time). /dev/dri/renderD* + will now be owned by the "render" group along with /dev/kfd. + + * "DynamicUser=yes" has been enabled for systemd-timesyncd.service, + systemd-journal-gatewayd.service and + systemd-journal-upload.service. This means "nss-systemd" must be + enabled in /etc/nsswitch.conf to ensure the UIDs assigned to these + services are resolved properly. + + * In /etc/fstab two new mount options are now understood: + x-systemd.makefs and x-systemd.growfs. The former has the effect that + the configured file system is formatted before it is mounted, the + latter that the file system is resized to the full block device size + after it is mounted (i.e. if the file system is smaller than the + partition it resides on, it's grown). This is similar to the fsck + logic in /etc/fstab, and pulls in systemd-makefs@.service and + systemd-growfs@.service as necessary, similar to + systemd-fsck@.service. Resizing is currently only supported on ext4 + and btrfs. + + * In systemd-networkd, the IPv6 RA logic now optionally may announce + DNS server and domain information. + + * Support for the LUKS2 on-disk format for encrypted partitions has + been added. This requires libcryptsetup2 during compilation and + runtime. + + * The systemd --user instance will now signal "readiness" when its + basic.target unit has been reached, instead of when the run queue ran + empty for the first time. + + * Tmpfiles.d with user configuration are now also supported. + systemd-tmpfiles gained a new --user switch, and snippets placed in + ~/.config/user-tmpfiles.d/ and corresponding directories will be + executed by systemd-tmpfiles --user running in the new + systemd-tmpfiles-setup.service and systemd-tmpfiles-clean.service + running in the user session. + + * Unit files and tmpfiles.d snippets learnt three new % specifiers: + %S resolves to the top-level state directory (/var/lib for the system + instance, $XDG_CONFIG_HOME for the user instance), %C resolves to the + top-level cache directory (/var/cache for the system instance, + $XDG_CACHE_HOME for the user instance), %L resolves to the top-level + logs directory (/var/log for the system instance, + $XDG_CONFIG_HOME/log/ for the user instance). This matches the + existing %t specifier, that resolves to the top-level runtime + directory (/run for the system instance, and $XDG_RUNTIME_DIR for the + user instance). + + * journalctl learnt a new parameter --output-fields= for limiting the + set of journal fields to output in verbose and JSON output modes. + + * systemd-timesyncd's configuration file gained a new option + RootDistanceMaxSec= for setting the maximum root distance of servers + it'll use, as well as the new options PollIntervalMinSec= and + PollIntervalMaxSec= to tweak the minimum and maximum poll interval. + + * bootctl gained a new command "list" for listing all available boot + menu items on systems that follow the boot loader specification. + + * systemctl gained a new --dry-run switch that shows what would be done + instead of doing it, and is currently supported by the shutdown and + sleep verbs. + + * ConditionSecurity= can now detect the TOMOYO security module. + + * Unit file [Install] sections are now also respected in unit drop-in + files. This is intended to be used by drop-ins under /usr/lib/. + + * systemd-firstboot may now also set the initial keyboard mapping. + + * Udev "changed" events for devices which are exposed as systemd + .device units are now propagated to units specified in + ReloadPropagatedFrom= as reload requests. + + * If a udev device has a SYSTEMD_WANTS= property containing a systemd + unit template name (i.e. a name in the form of 'foobar@.service', + without the instance component between the '@' and - the '.'), then + the escaped sysfs path of the device is automatically used as the + instance. + + * SystemCallFilter= in unit files has been extended so that an "errno" + can be specified individually for each system call. Example: + SystemCallFilter=~uname:EILSEQ. + + * The cgroup delegation logic has been substantially updated. Delegate= + now optionally takes a list of controllers (instead of a boolean, as + before), which lists the controllers to delegate at least. + + * The networkd DHCPv6 client now implements the FQDN option (RFC 4704). + + * A new LogLevelMax= setting configures the maximum log level any + process of the service may log at (i.e. anything with a lesser + priority than what is specified is automatically dropped). A new + LogExtraFields= setting allows configuration of additional journal + fields to attach to all log records generated by any of the unit's + processes. + + * New StandardInputData= and StandardInputText= settings along with the + new option StandardInput=data may be used to configure textual or + binary data that shall be passed to the executed service process via + standard input, encoded in-line in the unit file. + + * StandardInput=, StandardOutput= and StandardError= may now be used to + connect stdin/stdout/stderr of executed processes directly with a + file or AF_UNIX socket in the file system, using the new "file:" option. + + * A new unit file option CollectMode= has been added, that allows + tweaking the garbage collection logic for units. It may be used to + tell systemd to garbage collect units that have failed automatically + (normally it only GCs units that exited successfully). systemd-run + and systemd-mount expose this new functionality with a new -G option. + + * "machinectl bind" may now be used to bind mount non-directories + (i.e. regularfiles, devices, fifos, sockets). + + * systemd-analyze gained a new verb "calendar" for validating and + testing calendar time specifications to use for OnCalendar= in timer + units. Besides validating the expression it will calculate the next + time the specified expression would elapse. + + * In addition to the pre-existing FailureAction= unit file setting + there's now SuccessAction=, for configuring a shutdown action to + execute when a unit completes successfully. This is useful in + particular inside containers that shall terminate after some workload + has been completed. Also, both options are now supported for all unit + types, not just services. + + * networkds's IP rule support gained two new options + IncomingInterface= and OutgoingInterface= for configuring the incoming + and outgoing interfaces of configured rules. systemd-networkd also + gained support for "vxcan" network devices. + + * networkd gained a new setting RequiredForOnline=, taking a + boolean. If set, systemd-wait-online will take it into consideration + when determining that the system is up, otherwise it will ignore the + interface for this purpose. + + * The sd_notify() protocol gained support for a new operation: with + FDSTOREREMOVE=1 file descriptors may be removed from the per-service + store again, ahead of POLLHUP or POLLERR when they are removed + anyway. + + * A new document UIDS-GIDS.md has been added to the source tree, that + documents the UID/GID range and assignment assumptions and + requirements of systemd. + + * The watchdog device PID 1 will ping may now be configured through the + WatchdogDevice= configuration file setting, or by setting the + systemd.watchdog_service= kernel commandline option. + + * systemd-resolved's gained support for registering DNS-SD services on + the local network using MulticastDNS. Services may either be + registered by dropping in a .dnssd file in /etc/systemd/dnssd/ (or + the same dir below /run, /usr/lib), or through its D-Bus API. + + * The sd_notify() protocol can now with EXTEND_TIMEOUT_USEC=microsecond + extend the effective start, runtime, and stop time. The service must + continue to send EXTEND_TIMEOUT_USEC within the period specified to + prevent the service manager from making the service as timedout. + + * systemd-resolved's DNSSEC support gained support for RFC 8080 + (Ed25519 keys and signatures). + + * The systemd-resolve command line tool gained a new set of options + --set-dns=, --set-domain=, --set-llmnr=, --set-mdns=, --set-dnssec=, + --set-nta= and --revert to configure per-interface DNS configuration + dynamically during runtime. It's useful for pushing DNS information + into systemd-resolved from DNS hook scripts that various interface + managing software supports (such as pppd). + + * systemd-nspawn gained a new --network-namespace-path= command line + option, which may be used to make a container join an existing + network namespace, by specifying a path to a "netns" file. + + Contributions from: Alan Jenkins, Alan Robertson, Alessandro Ghedini, + Andrew Jeddeloh, Antonio Rojas, Ari, asavah, bleep_blop, Carsten + Strotmann, Christian Brauner, Christian Hesse, Clinton Roy, Collin + Eggert, Cong Wang, Daniel Black, Daniel Lockyer, Daniel Rusek, Dimitri + John Ledkov, Dmitry Rozhkov, Dongsu Park, Edward A. James, Evgeny + Vereshchagin, Florian Klink, Franck Bui, Gwendal Grignou, Hans de + Goede, Harald Hoyer, Hristo Venev, Iago López Galeiras, Ikey Doherty, + Jakub Wilk, Jérémy Rosen, Jiahui Xie, John Lin, José Bollo, Josef + Andersson, juga0, Krzysztof Nowicki, Kyle Walker, Lars Karlitski, Lars + Kellogg-Stedman, Lauri Tirkkonen, Lennart Poettering, Lubomir Rintel, + Luca Bruno, Lucas Werkmeister, Lukáš Nykrýn, Lukáš Říha, Lukasz + Rubaszewski, Maciej S. Szmigiero, Mantas Mikulėnas, Marcus Folkesson, + Martin Steuer, Mathieu Trudel-Lapierre, Matija Skala, + Matthias-Christian Ott, Max Resch, Michael Biebl, Michael Vogt, Michal + Koutný, Michal Sekletar, Mike Gilbert, Muhammet Kara, Neil Brown, Olaf + Hering, Ondrej Kozina, Patrik Flykt, Patryk Kocielnik, Peter Hutterer, + Piotr Drąg, Razvan Cojocaru, Robin McCorkell, Roland Hieber, Saran + Tunyasuvunakool, Sergey Ptashnick, Shawn Landden, Shuang Liu, Simon + Arlott, Simon Peeters, Stanislav Angelovič, Stefan Agner, Susant + Sahani, Sylvain Plantefève, Thomas Blume, Thomas Haller, Tiago Salem + Herrmann, Tinu Weber, Tom Stellard, Topi Miettinen, Torsten Hilbrich, + Vito Caputo, Vladislav Vishnyakov, WaLyong Cho, Yu Watanabe, Zbigniew + Jędrzejewski-Szmek, Zeal Jagannatha + + — Berlin, 2017-12-14 + CHANGES WITH 235: + * INCOMPATIBILITY: systemd-logind.service and other long-running + services now run inside an IPv4/IPv6 sandbox, prohibiting them any IP + communication with the outside. This generally improves security of + the system, and is in almost all cases a safe and good choice, as + these services do not and should not provide any network-facing + functionality. However, systemd-logind uses the glibc NSS API to + query the user database. This creates problems on systems where NSS + is set up to directly consult network services for user database + lookups. In particular, this creates incompatibilities with the + "nss-nis" module, which attempts to directly contact the NIS/YP + network servers it is configured for, and will now consistently + fail. In such cases, it is possible to turn off IP sandboxing for + systemd-logind.service (set IPAddressDeny= in its [Service] section + to the empty string, via a .d/ unit file drop-in). Downstream + distributions might want to update their nss-nis packaging to include + such a drop-in snippet, accordingly, to hide this incompatibility + from the user. Another option is to make use of glibc's nscd service + to proxy such network requests through a privilege-separated, minimal + local caching daemon, or to switch to more modern technologies such + sssd, whose NSS hook-ups generally do not involve direct network + access. In general, we think it's definitely time to question the + implementation choices of nss-nis, i.e. whether it's a good idea + today to embed a network-facing loadable module into all local + processes that need to query the user database, including the most + trivial and benign ones, such as "ls". For more details about + IPAddressDeny= see below. + * A new modprobe.d drop-in is now shipped by default that sets the bonding module option max_bonds=0. This overrides the kernel default, to avoid conflicts and ambiguity as to whether or not bond0 should be |