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man: add libsystemd(3)

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Before libsystemd-daemon, libsystemd-journal, libsystemd-id128, etc., were
merged into libsystemd, it was enough to have individual man pages for them.
But they have been delivered as one thing for many years, so it's better to
have a landing page for libsystemd. It mostly directs to individual pages
anyway.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2023-05-15 15:17:13 +02:00
parent 778816f4c8
commit 4bc96dc162
11 changed files with 125 additions and 23 deletions
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89
man/libsystemd.xml Normal file
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@ -0,0 +1,89 @@
<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
<refentry id="libsystemd"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>libsystemd</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>libsystemd</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname>libsystemd</refname>
<refpurpose>Functions for implementing services and interacting with systemd</refpurpose>
</refnamediv>
<refsynopsisdiv>
<programlisting>
#include &lt;systemd/sd-bus.h&gt;
#include &lt;systemd/sd-bus-vtable.h&gt;
#include &lt;systemd/sd-bus-protocol.h&gt;
#include &lt;systemd/sd-daemon.h&gt;
#include &lt;systemd/sd-device.h&gt;
#include &lt;systemd/sd-event.h&gt;
#include &lt;systemd/sd-gpt.h&gt;
#include &lt;systemd/sd-hwdb.h&gt;
#include &lt;systemd/sd-id128.h&gt;
#include &lt;systemd/sd-journal.h&gt;
#include &lt;systemd/sd-login.h&gt;
#include &lt;systemd/sd-messages.h&gt;
#include &lt;systemd/sd-path.h&gt;
</programlisting>
<cmdsynopsis>
<command>pkg-config --cflags --libs libsystemd</command>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>The <filename>libsystemd</filename> library provides functions that allow interacting with various
interfaces provided by the
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry> service
manager, as well as various other functions and constants useful for implementing services in
general.</para>
<para>See
<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-bus-errors</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-daemon</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-device</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-event</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-hwdb</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
and
<citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>
for information about different parts of the library interface.</para>
</refsect1>
<refsect1>
<title>Interface stability</title>
<para>Strict backwards-compatibility is maintained for the API (application programming interface) and
ABI (application binary interface). Symbol versioning is used, with symbols only added and never removed.
</para>
</refsect1>
<xi:include href="libsystemd-pkgconfig.xml" />
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>libudev</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<ulink url="https://systemd.io/PORTABILITY_AND_STABILITY/">Interface Portability and Stability Promise</ulink>
</para>
</refsect1>
</refentry>

1
man/rules/meson.build
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@ -31,6 +31,7 @@ manpages = [
['journald.conf', '5', ['journald.conf.d', 'journald@.conf'], ''],
['kernel-command-line', '7', [], ''],
['kernel-install', '8', [], 'ENABLE_KERNEL_INSTALL'],
['libsystemd', '3', [], ''],
['libudev', '3', [], ''],
['loader.conf', '5', [], 'ENABLE_BOOTLOADER'],
['locale.conf', '5', [], ''],

1
man/sd-bus-errors.xml
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@ -274,6 +274,7 @@
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_error</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_message_set_allow_interactive_authorization</refentrytitle><manvolnum>3</manvolnum></citerefentry>,

7
man/sd-bus.xml
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@ -34,10 +34,11 @@
<refsect1>
<title>Description</title>
<para><filename>sd-bus.h</filename> provides an implementation of a D-Bus IPC client. See
<para><filename>sd-bus.h</filename> is part of
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
provides an implementation of a D-Bus IPC client. See
<ulink url="https://www.freedesktop.org/software/dbus/" />
for more information about D-Bus IPC.
</para>
for more information about D-Bus IPC.</para>
<para>See
<literallayout><citerefentry><refentrytitle>sd_bus_add_match</refentrytitle><manvolnum>3</manvolnum></citerefentry>,

9
man/sd-daemon.xml
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@ -44,10 +44,11 @@
<refsect1>
<title>Description</title>
<para><filename>sd-daemon.h</filename> provides APIs for new-style
daemons, as implemented by the
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
service manager.</para>
<para><filename>sd-daemon.h</filename> is part of
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
provides APIs for new-style daemons, as implemented by the
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry> service
manager.</para>
<para>See
<citerefentry><refentrytitle>sd_listen_fds</refentrytitle><manvolnum>3</manvolnum></citerefentry>,

6
man/sd-device.xml
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@ -34,8 +34,10 @@
<refsect1>
<title>Description</title>
<para><filename>sd-device.h</filename> provides an API to introspect and enumerate devices on the local
system. It provides a programmatic interface to the database of devices and their properties mananaged by
<para><filename>sd-device.h</filename> is part of
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
provides an API to introspect and enumerate devices on the local system. It provides a programmatic
interface to the database of devices and their properties mananaged by
<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
This API is a replacement for
<citerefentry><refentrytitle>libudev</refentrytitle><manvolnum>3</manvolnum></citerefentry> and

5
man/sd-event.xml
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@ -34,8 +34,9 @@
<refsect1>
<title>Description</title>
<para><filename>sd-event.h</filename> provides a generic event
loop implementation, based on Linux <citerefentry
<para><filename>sd-event.h</filename> is part of
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
provides a generic event loop implementation, based on Linux <citerefentry
project='man-pages'><refentrytitle>epoll</refentrytitle><manvolnum>7</manvolnum></citerefentry>.
</para>

6
man/sd-hwdb.xml
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@ -34,8 +34,10 @@
<refsect1>
<title>Description</title>
<para><filename>sd-hwdb.h</filename> allows read-only access the systemd database of hardware properties.
See <citerefentry><refentrytitle>hwdb</refentrytitle><manvolnum>7</manvolnum></citerefentry> and
<para><filename>sd-hwdb.h</filename> is part of
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry> and allows
read-only access the systemd database of hardware properties. See
<citerefentry><refentrytitle>hwdb</refentrytitle><manvolnum>7</manvolnum></citerefentry> and
<citerefentry><refentrytitle>systemd-hwdb</refentrytitle><manvolnum>8</manvolnum></citerefentry> for more
information about the database.</para>

12
man/sd-id128.xml
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@ -121,11 +121,13 @@
<refsect1>
<title>Description</title>
<para><filename>sd-id128.h</filename> provides APIs to generate, convert, and compare 128-bit ID values.
The 128-bit ID values processed and generated by these APIs are a generalization of OSF UUIDs as defined
by <ulink url="https://tools.ietf.org/html/rfc4122">RFC 4122</ulink> but use a simpler string format.
These functions impose no structure on the used IDs, much unlike OSF UUIDs or Microsoft GUIDs, but are
mostly compatible with those types of IDs.
<para><filename>sd-id128.h</filename> is part of
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
provides APIs to generate, convert, and compare 128-bit ID values. The 128-bit ID values processed and
generated by these APIs are a generalization of OSF UUIDs as defined by <ulink
url="https://tools.ietf.org/html/rfc4122">RFC 4122</ulink> but use a simpler string format. These
functions impose no structure on the used IDs, much unlike OSF UUIDs or Microsoft GUIDs, but are mostly
compatible with those types of IDs.
</para>
<para>A 128-bit ID is implemented as the following

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man/sd-journal.xml
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@ -36,8 +36,9 @@
<refsect1>
<title>Description</title>
<para><filename>sd-journal.h</filename> provides APIs to submit
and query log entries. The APIs exposed act both as client for the
<para><filename>sd-journal.h</filename> is part of
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
provides APIs to submit and query log entries. The APIs exposed act both as client for the
<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
journal service and as parser for the journal files on disk.
</para>

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man/sd-login.xml
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@ -35,9 +35,10 @@
<refsect1>
<title>Description</title>
<para><filename>sd-login.h</filename> provides APIs to introspect
and monitor seat, login session and user status information on the
local system. </para>
<para><filename>sd-login.h</filename> is part of
<citerefentry><refentrytitle>libsystemd</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
provides APIs to introspect and monitor seat, login session, and user status information on the local
system.</para>
<para>Note that these APIs only allow purely passive access and
monitoring of seats, sessions and users. To actively make changes