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Merge pull request #9268 from keszybz/news

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NEWS followup and a small man addition
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Lennart Poettering 2018-06-12 14:58:13 +02:00 committed by GitHub
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137
NEWS
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@ -4,9 +4,9 @@ CHANGES WITH 239 in spe:
* NETWORK INTERFACE DEVICE NAMING CHANGES: systemd-udevd's "net_id"
builtin may name network interfaces differently than in previous
versions. SR-IOV virtual functions and NPAR partitions with PCI
function numbers of 8 and above will be named more predictably,
and udev may generate names based on PCI slot number in some cases
versions. SR-IOV virtual functions and NPAR partitions with PCI
function numbers of 8 and above will be named more predictably, and
udev may generate names based on the PCI slot number in some cases
where it previously did not.
* AF_INET and AF_INET6 are dropped from RestrictAddressFamilies= in
@ -34,28 +34,32 @@ CHANGES WITH 239 in spe:
* systemd-tmpfiles will now print a notice whenever it encounters
tmpfiles.d/ lines referencing the /var/run/ directory. It will
recommend reworking them to use the /run/ directory instead (for
which /var/run/ is simply a symlinked compatibility alias). This is
recommended, so that systemd-tmpfiles can properly detect line
conflicts and merge lines referencing the same files by both paths,
without having to access them.
which /var/run/ is simply a symlinked compatibility alias). This way
systemd-tmpfiles can properly detect line conflicts and merge lines
referencing the same file by two paths, without having to access
them.
* systemctl disable/unmask/preset/preset-all cannot be used with
--runtime. Previously this was allowed, but resulted in unintuitive
behaviour that wasn't useful.
behaviour that wasn't useful. systemctl disable/unmask will now
undo both runtime and persistent enablement/masking, i.e. it will
remove any relevant symlinks both in /run and /etc.
* sd-boot acquire new loader configuration settings for optionally
turning off Windows and MacOS boot partition discovery as well as
reboot-into-firmware menu items. It also should be able to pick a
better screen resolution for HiDPI systems, and now provides loader
* sd-boot acquired new loader configuration settings to optionally turn
off Windows and MacOS boot partition discovery as well as
reboot-into-firmware menu items. It is also able to pick a better
screen resolution for HiDPI systems, and now provides loader
configuration settings to change the resolution explicitly.
* The systemd-resolve tool has been renamed to resolvectl (it also
remains available under the old name, for compatibility), and its
interface is now verb-based, similar in style to the other <xyz>ctl
tools, such as systemctl or loginctl. Also, the tool may now be
linked to the "resolveconf" name, in which case it will take
arguments and input compatible with the Debian and FreeBSD resolvconf
tool.
tools, such as systemctl or loginctl.
* The resolvectl/systemd-resolve tool also provides 'resolveconf'
compatiblity. It may be symlinked under the 'resolveconf' name, in
which case it will take arguments and input compatible with the
Debian and FreeBSD resolvconf tool.
* Support for suspend-then-hibernate has been added, i.e. a sleep mode
where the system initially suspends, and after a time-out resumes and
@ -73,14 +77,14 @@ CHANGES WITH 239 in spe:
will be compressed, smaller ones will not. Previously this threshold
was not configurable and set to 512.
* A new system.conf NoNewPrivileges= is now available which may be used
to turn off acquiring of new privileges system-wide (i.e. set Linux'
PR_SET_NO_NEW_PRIVS for PID 1 itself, and thus also all its
children). Note that turning this option on means setuid binaries and
file system capabilities lose their special powers. While turning on
this option is a big step towards a more secure system, doing so is
likely to break numerous pre-existing UNIX tools, in particular su
and sudo.
* A new system.conf setting NoNewPrivileges= is now available which may
be used to turn off acquisition of new privileges system-wide
(i.e. set Linux' PR_SET_NO_NEW_PRIVS for PID 1 itself, and thus also
for all its children). Note that turning this option on means setuid
binaries and file system capabilities lose their special powers.
While turning on this option is a big step towards a more secure
system, doing so is likely to break numerous pre-existing UNIX tools,
in particular su and sudo.
* A new service systemd-time-sync-wait.service has been added. If
enabled it will delay the time-sync.target unit at boot until time
@ -93,32 +97,43 @@ CHANGES WITH 239 in spe:
write offset, on kernels new enough to support this. This means swap
files should work for hibernation now.
* When loading unit files, systemd will now look for drop-in unit file
extension at additional places. Previously, for a unit file name
* When loading unit files, systemd will now look for drop-in unit files
extensions in additional places. Previously, for a unit file name
"foo-bar-baz.service" it would look for dropin files in
"foo-bar-baz.service.d/*.conf". Now, it will also look in
"foo-bar-.service.d/*.conf" and "foo-.service.d/", i.e. at the
service name truncated after all inner dashes. This scheme allows
writing drop-ins easily that apply to a whole set of unit files at
once. It's particularly useful for mount and slice units (as their
naming is prefix based anyway), but is also useful for service and
other units, for packages that install multiple unit files at once,
naming is prefix based), but is also useful for service and other
units, for packages that install multiple unit files at once,
following a strict naming regime of beginning the unit file name with
the package's name. Two new specifiers are now supported while
parsing unit files, to match this: %j and %J are replaced by the part
of the unit name following the last dash.
the package's name. Two new specifiers are now supported in unit
files to match this: %j and %J are replaced by the part of the unit
name following the last dash.
* Unit files and other configuration files that support specifier
expansion now understand another two new specifiers: %T and %V will
resolve to /tmp and /var/tmp respectively, or whatever temporary
directory has been set for the calling user.
* The ExecStart= lines of unit files are no longer required to
reference absolute paths. If non-absolute paths are specified the
specified binary name is searched within the service manager's
built-in $PATH. It's generally recommended to continue to use
absolute paths for all binaries specified in unit files.
built-in $PATH, which may be queried with 'systemd-path
search-binaries-default'. It's generally recommended to continue to
use absolute paths for all binaries specified in unit files.
* Units gained a new load state "bad-setting", which is used when a
unit file was loaded, but contained fatal errors which prevent it
from being started (for example, an ExecStart= path which references
a non-existent executable).
* coredumpctl's "gdb" verb has been renamed to "debug", in order to
support alternative debuggers, for example lldb. The old name
continues to be available however, for compatibility reasons. Use the
new --debugger= switch and $SYSTEMD_DEBUGGER environment variable to
pick an alternative debugger instead of the default of gdb.
new --debugger= switch or the $SYSTEMD_DEBUGGER environment variable
to pick an alternative debugger instead of the default gdb.
* systemctl and the other tools will now output escape sequences that
generate proper clickable hyperlinks in various terminal emulators
@ -129,10 +144,9 @@ CHANGES WITH 239 in spe:
"less" pager doesn't support this yet, hence this functionality is
currently automatically turned off when a pager is started (which
happens quite often due to auto-paging). We hope to remove this
limitation as soon as "less" learns these escape sequences too. This
new behaviour may also be turned off explicitly with the
$SYSTEMD_URLIFY environment variable. For details on these escape
sequences see:
limitation as soon as "less" learns these escape sequences. This new
behaviour may also be turned off explicitly with the $SYSTEMD_URLIFY
environment variable. For details on these escape sequences see:
https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
* networkd's .network files now support a new IPv6MTUBytes= option for
@ -148,25 +162,26 @@ CHANGES WITH 239 in spe:
* networkd will now automatically make use of the kernel's route
expiration feature, if it is available.
* udevd's .link files now support setting the number of Rx/Tx channels,
using the RxChannels=, TxChannels=, OtherChannels=,
CombinedChannels=. Support for UDPSegmentationOffload= has been
removed, given its limited support in hardware, and waning software
support.
* udevd's .link files now support setting the number of receive and
transmit channels, using the RxChannels=, TxChannels=,
OtherChannels=, CombinedChannels= settings.
* Support for UDPSegmentationOffload= has been removed, given its
limited support in hardware, and waning software support.
* networkd's .netdev files now support creating "netdevsim" interfaces.
* PID 1 learnt a new bus call GetUnitByControlGroup() which may be used
to query the unit belonging to a specific kernel control group.
* systemd-analyze learnt a new verb "cat-config", which may be used to
* systemd-analyze gained a new verb "cat-config", which may be used to
dump the contents of any configuration file, with all its matching
drop-in files added in, and honouring the usual search and masking
logic applied to systemd configuration files. For example use
"systemd-analyze cat-config systemd/system.conf" to get the complete
system configuration file of systemd how it would be loaded by PID 1
itself. Similar to this various tools, such as systemd-tmpfiles or
systemd-sysusers learnt new option "--cat-config", which do
itself. Similar to this, various tools such as systemd-tmpfiles or
systemd-sysusers, gained a new option "--cat-config", which does the
corresponding operation for their own configuration settings. For
example, "systemd-tmpfiles --cat-config" will now output the full
list of tmpfiles.d/ lines in place.
@ -180,23 +195,23 @@ CHANGES WITH 239 in spe:
* systemd-nspawn gained a new --rlimit= switch for setting initial
resource limits for the container payload. There's a new switch
--hostname= for explicitly overriding the container's hostname. A new
--hostname= to explicitly override the container's hostname. A new
--no-new-privileges= switch may be used to control the
PR_SET_NO_NEW_PRIVS flag for the container payload. A new
--oom-score-adjust= switch controls the OOM scoring adjustment value
for the payload. The new --cpu-affinity= switch controls the CPU
affinity of the container payload. The new --resolv-conf= switch
allows more detailed control of /etc/resolv.conf handling of the
container. Similar, the new --timezone= switch allows more detailed
container. Similarly, the new --timezone= switch allows more detailed
control of /etc/localtime handling of the container.
* systemd-detect-virt learnt a new --list switch, which will print a
* systemd-detect-virt gained a new --list switch, which will print a
list of all currently known VM and container environments.
* Support for the new "Portable Services" concept has been added, see
* Support for "Portable Services" has been added, see
doc/PORTABLE_SERVICES.md for details. Currently, the support is still
experimental, but this is expected to change soon. Reflecting the
experimental state the "portablectl" binary is not installed into
experimental, but this is expected to change soon. Reflecting this
experimental state, the "portablectl" binary is not installed into
/usr/bin yet. The binary has to be called with the full path
/usr/lib/systemd/portablectl instead.
@ -210,11 +225,8 @@ CHANGES WITH 239 in spe:
* A new --dump-bus-properties switch has been added to the systemd
binary, which may be used to dump all supported D-Bus properties.
* Unit files and other configuration files that support specifier
expansion now understand two new specifiers: %T and %V will resolve
to /tmp and /var/tmp respectively, or whatever temporary directory
has been set for the calling user.
(Options which are still supported, but are deprecated, are *not*
shown.)
* sd-bus gained a set of new calls:
sd_bus_slot_set_floating()/sd_bus_slot_get_floating() may be used to
@ -232,12 +244,17 @@ CHANGES WITH 239 in spe:
* sd-event and sd-bus gained support for calling special user-supplied
destructor functions for userdata pointers associated with
sd_event_source, sd_bus_slot and sd_bus_track objects.
sd_event_source, sd_bus_slot, and sd_bus_track objects. For this new
functions sd_bus_slot_set_destroy_callback,
sd_bus_slot_get_destroy_callback, sd_bus_track_set_destroy_callback,
sd_bus_track_get_destroy_callback,
sd_event_source_set_destroy_callback,
sd_event_source_get_destroy_callback have been added.
* The "net.ipv4.tcp_ecn" sysctl will now be turned on by default.
* PID 1 will now automatically reschedule .timer units whenever the
local timezone changes. (They previously got rescheduled already
local timezone changes. (They previously got rescheduled
automatically when the system clock changed.)
* New documentation has been added to document cgroups delegation,

5
doc/CODE_QUALITY.md
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@ -51,11 +51,10 @@ available functionality:
[online](https://oss-fuzz.com/v2/testcases?project=systemd).
12. Our tree includes `.editorconfig`, `.dir-locals.el` and `.vimrc` files, to
ensure that editors follow the right indenting coding styles automatically.
ensure that editors follow the right indentiation styles automatically.
13. When building systemd from a git checkout the build scripts will
automatically enabled a git commit hook that ensures whitespace
cleanliness.
automatically enable a git commit hook that ensures whitespace cleanliness.
Access to Coverity and oss-fuzz reports is limited. Please reach out the the
maintainers is you need access.

3
man/systemd-timesyncd.service.xml
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@ -85,7 +85,8 @@
<listitem>
<para>The modification time of this file indicates the timestamp of the last successful
synchronization.</para>
synchronization (or at least the systemd build date, in case synchronization was not
possible).</para>
</listitem>
</varlistentry>