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Logically, this is better, because we're describing a subset of possible
return values. Visually this also looks quite good because groff renders
refsect2 much less prominently.
Also rewrap things, add <constant> in various places, fix some typos.
No other changes, just some reshuffling and adding of section headers
(well, admittedly, I changed some "see above" and "see below" in the
text to match the new order.)
The number of verbs supported by systemd-analyze has grown quite a bit, and the
man page has become an unreadable wall of text. Let's put each verb in a
separate subsection, grouping similar verbs together, and add a lot of examples
to guide the user.
The "include" files had type "book" for some raeason. I don't think this
is meaningful. Let's just use the same everywhere.
$ perl -i -0pe 's^..DOCTYPE (book|refentry) PUBLIC "-//OASIS//DTD DocBook XML V4.[25]//EN"\s+"http^<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"\n "http^gms' man/*.xml
No need to waste space, and uniformity is good.
$ perl -i -0pe 's|\n+<!--\s*SPDX-License-Identifier: LGPL-2.1..\s*-->|\n<!-- SPDX-License-Identifier: LGPL-2.1+ -->|gms' man/*.xml
This makes L2TP.Local= support an empty string, 'auto', 'static', and
'dynamic'. When one of the values are specified, a local address is
automatically picked from the local interface of the tunnel.
Previously, 'degraded' state is ambiguous for bonding or bridge master:
1. one or more slave interfaces does not have carrier,
2. no link local address is assigned to the master,
3. combination of the above two.
This makes the above case 1 and 3 are in the new 'degraded-carrier'
state, and makes 'degraded' state as all slaves are active but no
link local address on master.
Things are currently fairly ugly in Fedora: we create $BOOT/$MACHINE_ID/$KERNEL_VERSION/,
and then 20-grub.install that is installed by grub2-common.rpm wants to remove that
directory before 50-dracut.install get a chance to run. 50-dracut.install
checks for the presence of that directory to decide where to install the
kernel. So let's make the creation of the directory conditional. Previous
commit changes bootctl install to create $BOOT/$MACHINE_ID, and this commit
makes kernel-install not create it. In effect, the entry directory will only be
created if 'bootctl install' or something else created the parent directory.
https://bugzilla.redhat.com/show_bug.cgi?id=1648907
When enabled, three samples are used to determine the value of a
received bit by majority rule.
This patch adds support for the TripleSampling= option in the [CAN]
section of .network files.
This makes it easier to see what is going on. Documentation for
--verbose and --help is added to the man page. Our plugins are updated
to also log a bit.
(This also removes support for booting into the EFI firmware setup
without logind. That's because otherwise the non-EFI fallback logind
implements can't work.)
Fixes: #9896
The option cursor-file takes a filename as argument. If the file exists and
contains a valid cursor, this is used to start the output after this position.
At the end, the last cursor gets written to the file.
This allows for an easy implementation of a timer that regularly looks in the
journal for some messages.
journalctl --cursor-file err-cursor -b -p err
journalctl --cursor-file audit-cursor -t audit --grep DENIED
Or you might want to walk the journal in steps of 10 messages:
journalctl --cursor-file ./curs -n10 --since=today -t systemd
adds a fully safe way how apps can pin files into /tmp temporarily, excepting them from the tmpfiles aging algorithm, based on BSD file locks on dirs we descend into
Let services use a private UTS namespace. In addition, a seccomp filter is
installed on set{host,domain}name and a ro bind mounts on
/proc/sys/kernel/{host,domain}name.
This adds /usr/local/lib/udev/rules.d to the search path on non-split-usr systems.
On split-usr systems, the paths with /usr/-prefixes are added too.
In the past, on split-usr systems, it made sense to only load rules from
/lib/udev/rules.d, because /usr could be mounted late. But we don't support running
without /usr since 80758717a6, so in practice it doesn't matter whether the
rules files are in /lib/udev/rules.d or /usr/lib/udev/rules.d. Distributions
that maintain the illusion of functional split-usr are welcome to simply not put any
files in /usr/lib/udev/rules.d/.
In practice this doesn't change much, but it makes udev more consistent with the
rest of the systemd suite.
/usr/local/lib/systemd/dnssd is now also included in the search path. This
path is of limited usefulness, but it makes sense to be consistent.
Documentation is updated to match. Outdated advice against drop-ins in /usr
is removed.
standard-conf.xml is currently included by:
man/binfmt.d.xml
man/environment.d.xml
man/modules-load.d.xml
man/sysctl.d.xml
man/coredump.conf.xml
man/journal-remote.conf.xml
man/journal-upload.conf.xml
man/journald.conf.xml
man/logind.conf.xml
man/networkd.conf.xml
man/resolved.conf.xml
man/systemd-sleep.conf.xml
man/systemd-system.conf.xml
All those programs actually use CONF_PATHS_NULSTR or CONF_PATHS_STRV,
so this changes the documentation to match code.
Linux can be run on a device meant to act as a USB peripheral. In order
for a machine to act as such a USB device it has to be equipped with
a UDC - USB Device Controller.
This patch adds a target reached when UDC becomes available. It can be used
for activating e.g. a service unit which composes a USB gadget with
configfs and activates it.
This new setting allows configuration of CFS period on the CPU cgroup, instead
of using a hardcoded default of 100ms.
Tested:
- Legacy cgroup + Unified cgroup
- systemctl set-property
- systemctl show
- Confirmed that the cgroup settings (such as cpu.cfs_period_ns) were set
appropriately, including updating the CPU quota (cpu.cfs_quota_ns) when
CPUQuotaPeriodSec= is updated.
- Checked that clamping works properly when either period or (quota * period)
are below the resolution of 1ms, or if period is above the max of 1s.
We should probably refer to them from other man pages
for programs which use them, since right now all refs are
in systemd-boot(7). But creating the section is a good step
anyway.
They is quite a bit of those directives and they were in "MISCELLANEOUS" because
they don't quite fit anywhere. When the OCI-compat stuff is merged, there'll
be even more, so let's make a separate section for them.
We had "SYSTEM MANAGER DIRECTIVES" which was a misnomer already, because
it also listed user manager stuff. Let's make this a more general section
and move the items for other services there too (from "MISCELANENOUS").
Strictly speaking, those are not environment variables, but they are compatible
and people think about them like this. Moving them makes them easier to find.
When there is bad link in the network the carrier goes up/down.
This makes networkd stops all the clients and drop config.
But if the remote router/dhcpserver running a prevention
of DHCP Starvation attack or DHCP Flood attack it does not allow
networkd to take a DHCP lease resulting failure in configuration.
This patch allows to keep the client running and keep the conf
also for this scenario.
Closes#9111
KillMode=mixed and control group are used to indicate that all
process should be killed off. SendSIGKILL is used for services
that require a clean shutdown. These are typically database
service where a SigKilled process would result in a lengthy
recovery and who's shutdown or startup time is quite variable
(so Timeout settings aren't of use).
Here we take these two factors and refuse to start a service if
there are existing processes within a control group. Databases,
while generally having some protection against multiple instances
running, lets not stress the rigor of these. Also ExecStartPre
parts of the service aren't as rigoriously written to protect
against against multiple use.
closes#8630
Instead of having just a single INITRD field, add support for all
additional parameters being INITRD fields in order.
Signed-off-by: Mike Auty <mike.auty@gmail.com>
@bl33pbl0p, please fix your editor
(Apparently you never configured the source tree? If you did, then the
git pre-commit hook would have been enabled which doesn't allow
commiting non-whitespace clean stuff...)
It's similar to sd_bus_flush_close_unref() but doesn't do the flushing.
This is useful since this will still discnnect the connection properly
but not synchronously wait for the peer to take our messages.
Primary usecase is within _cleanup_() expressions where synchronously
waiting on the peer is not OK.
This looks better and allows those terms to be indexed in systemd.directives.
In particular, <literal></literal> is dropped from around section names
([Match] and others) because the parens are distinctive enough on their own.
The same style is used in systemd.unit(5) and other pages that describe
sections.
If "keep" policy is specified, and the interface has a name that is
NET_NAME_USER or NET_NAME_RENAMED, we stop processing rules. "keep" should
probably be specified either first or last depending on the preference.
This partially reimplements 55b6530baa, in the
sense that if the "keep" policy is not specified, and if the interface has
a NamingPolicy, it will be renamed, even if it had a name previously.
So this breaks backwards compatibility in this case, but that's more in line
with what users expect.
Closes#9006.
Updating due to phrase "Defaults to DefaultTimeoutStartSec= from the manager configuration file, except when Type=oneshot is used, in which case the timeout is disabled by default (see systemd-system.conf)" from [0] https://github.com/systemd/systemd/blob/master/man/systemd.service.xml
Based on the journalctl documentation of this option added in 23ad99b519
(#10527), but with the first reference to “fields” replaced by “journal
messages”, since I think it’s less common to show other fields with
`systemctl status` (though it’s possible with the `-o` option).
Instead of enabling it unconditionally and then using ConditionPathExists=/etc/fstab,
and possibly masking this condition if it should be enabled for auto gpt stuff,
just pull it in explicitly when required.
The current support in kernel-install for initrd images doesn't copy
over the initrd file or allow a means for it to be specified (it
requires a specific filename in a particular directory).
This patchset adds support for (optionally) providing the name of
initial ramdisk file to copied over and used by kernel-install.
From WordNet (r) 3.0 (2006) [wn]:
time-out
n 1: a brief suspension of play; "each team has two time-outs left"
From The Free On-line Dictionary of Computing (18 March 2015) [foldoc]:
timeout
A period of time after which an error condition is raised if
some event has not occured. A common example is sending a
message. If the receiver does not acknowledge the message
within some preset timeout period, a transmission error is
assumed to have occured.
RFC7766 section 4 states that in the absence of EDNS0, a response that
is too large for a 512-byte UDP packet will have the 'truncated' bit
set. The client is expected to retry the query over TCP.
Fixes#10264.
This is useful for distributions, where the stability of interface names should
be preseved after an upgrade of systemd. So when some specific release of the
distro is made available, systemd defaults to the latest & greatest naming
scheme, and subsequent updates set the same default. This default may still
be overriden through the kernel and env var options.
A special value "latest" is also allowed. Without a specific name, it is harder
to verride from meson. In case of 'combo' options, meson reads the default
during the initial configuration, and "remembers" this choice. When systemd is
updated, old build/ directories could keep the old default, which would be
annoying. Hence, "latest" is introduced to make it explicit, yet follow the
upstream. This is actually useful for the user too, because it may be used
as an override, without having to actually specify a version.
With this we can stabilize how naming works for network interfaces. A
user can request through a kernel cmdline option or an env var which
scheme to follow. The idea is that installers use this to set into stone
(a very soft stone though) the scheme used during installation so that
interface naming doesn't change afterwards anymore.
Why use env vars and kernel cmdline options, and not a config file of
its own?
Well, first of all there's no obvious existing one to use. But more
importantly: I have the feeling that this logic is kind of an incomplete
hack, and I simply don't want to do advertise this as a perfectly
working solution. So far we used env vars for the non-so-official
options and proper config files for the official stuff. Given how
incomplete this logic is (i.e. the big variable for naming remains the
kernel, which might expose sysfs attributes in newer versions that we
check for and didn't exist in older versions — and other problems like
this), I am simply not confident in giving this first-class exposure in
a primary configuration file.
Fixes: #10448
We would describe tmpfiles.d through what systemd-tmpfiles does with them, but
I think it's better to start with a geneneral statement what they are. Also,
let's make the description of volatile file systems less prominent.
Also, strenghten the advice to use RuntimeDirectory and mention
{Cache,Logs,Configuration,State}Directory=.
I think it is OK if some option is described as "similar to ..., but in
addition ...", as long as the "in addition" part is strictly additive this is
unambiguous. Otherwise, we'd have to repeat a lot of text, and then we'd
probably forget to adjust some of the descriptions when doing changes.
But when the "in addition" part is about replacing or removing parts of
functionality, it is better to avoid this pattern and describe the later option
from scratch.
Some paragraph breaks are added and minor changes made. UID/GID is changed to
user/group, since we generally expect user/group names to be used, not numeric
ids.
Fixes#11115.
This is convenient when working with device units in systemd. Instead of
converting the systemd unit name to a path to feed to udevadm, udevadm
info|trigger can be called directly on the unit name.
The man page is reworked a bit to describe the modern syntax with positional
arguments first. It's just simpler to use than the positional options.
When using networkd we currently have no way of ensuring that static
neighbor entries are set when our link comes up. This change adds a new
section to the network definition that allows multiple static neighbors
to be set on a link.
Patches are shown on github with a fixed width (no matter how wide the window
is). When line numbers are high (we have some files with 5 digit line numbers),
the diff does not fit, and horizontal scrolling must be used when viewing the
patch. This is super annoying. Let's reduce the width a bit. I think 109 is
still very wide, but at least the github issue should be alleviated.
