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-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2014 Zbigniew Jędrzejewski-Szmek
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="sd_bus_creds_get_pid">
-
- <refentryinfo>
- <title>sd_bus_creds_get_pid</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>A monkey with a typewriter</contrib>
- <firstname>Zbigniew</firstname>
- <surname>Jędrzejewski-Szmek</surname>
- <email>zbyszek@in.waw.pl</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>sd_bus_creds_get_pid</refentrytitle>
- <manvolnum>3</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>sd_bus_creds_get_pid</refname>
- <refname>sd_bus_creds_get_ppid</refname>
- <refname>sd_bus_creds_get_tid</refname>
- <refname>sd_bus_creds_get_uid</refname>
- <refname>sd_bus_creds_get_euid</refname>
- <refname>sd_bus_creds_get_suid</refname>
- <refname>sd_bus_creds_get_fsuid</refname>
- <refname>sd_bus_creds_get_gid</refname>
- <refname>sd_bus_creds_get_egid</refname>
- <refname>sd_bus_creds_get_sgid</refname>
- <refname>sd_bus_creds_get_fsgid</refname>
- <refname>sd_bus_creds_get_supplementary_gids</refname>
- <refname>sd_bus_creds_get_comm</refname>
- <refname>sd_bus_creds_get_tid_comm</refname>
- <refname>sd_bus_creds_get_exe</refname>
- <refname>sd_bus_creds_get_cmdline</refname>
- <refname>sd_bus_creds_get_cgroup</refname>
- <refname>sd_bus_creds_get_unit</refname>
- <refname>sd_bus_creds_get_slice</refname>
- <refname>sd_bus_creds_get_user_unit</refname>
- <refname>sd_bus_creds_get_user_slice</refname>
- <refname>sd_bus_creds_get_session</refname>
- <refname>sd_bus_creds_get_owner_uid</refname>
- <refname>sd_bus_creds_has_effective_cap</refname>
- <refname>sd_bus_creds_has_permitted_cap</refname>
- <refname>sd_bus_creds_has_inheritable_cap</refname>
- <refname>sd_bus_creds_has_bounding_cap</refname>
- <refname>sd_bus_creds_get_selinux_context</refname>
- <refname>sd_bus_creds_get_audit_session_id</refname>
- <refname>sd_bus_creds_get_audit_login_uid</refname>
- <refname>sd_bus_creds_get_tty</refname>
- <refname>sd_bus_creds_get_unique_name</refname>
- <refname>sd_bus_creds_get_well_known_names</refname>
- <refname>sd_bus_creds_get_description</refname>
-
- <refpurpose>Retrieve fields from a credentials object</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_pid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>pid_t *<parameter>pid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_ppid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>pid_t *<parameter>ppid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_tid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>pid_t *<parameter>tid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_uid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>uid_t *<parameter>uid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_euid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>uid_t *<parameter>uid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_suid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>uid_t *<parameter>uid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_fsuid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>uid_t *<parameter>uid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_gid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>gid_t *<parameter>gid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_egid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>gid_t *<parameter>gid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_sgid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>gid_t *<parameter>gid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_fsgid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>gid_t *<parameter>gid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_supplementary_gids</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const gid_t **<parameter>gids</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_comm</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>comm</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_tid_comm</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>comm</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_exe</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>exe</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_cmdline</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>char ***<parameter>cmdline</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_cgroup</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>cgroup</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_unit</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>unit</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_slice</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>slice</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_user_unit</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>unit</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_user_slice</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>slice</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_session</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>slice</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_owner_uid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>uid_t *<parameter>uid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_has_effective_cap</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>int <parameter>capability</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_has_permitted_cap</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>int <parameter>capability</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_has_inheritable_cap</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>int <parameter>capability</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_has_bounding_cap</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>int <parameter>capability</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_selinux_context</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>context</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_audit_session_id</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>uint32_t *<parameter>sessionid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_audit_login_uid</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>uid_t *<parameter>loginuid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_tty</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>tty</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_unique_name</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>name</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_well_known_names</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>char ***<parameter>name</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_bus_creds_get_description</function></funcdef>
- <paramdef>sd_bus_creds *<parameter>c</parameter></paramdef>
- <paramdef>const char **<parameter>name</parameter></paramdef>
- </funcprototype>
-
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para>These functions return credential information from an
- <parameter>sd_bus_creds</parameter> object. Credential objects may
- be created with
- <citerefentry><refentrytitle>sd_bus_creds_new_from_pid</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
- in which case they describe the credentials of the process
- identified by the specified PID, with
- <citerefentry><refentrytitle>sd_bus_get_name_creds</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
- in which case they describe the credentials of a bus peer
- identified by the specified bus name, with
- <citerefentry><refentrytitle>sd_bus_get_owner_creds</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
- in which case they describe the credentials of the creator of a
- bus, or with
- <citerefentry><refentrytitle>sd_bus_message_get_creds</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
- in which case they describe the credentials of the sender of the
- message.</para>
-
- <para>Not all credential fields are part of every
- <literal>sd_bus_creds</literal> object. Use
- <citerefentry><refentrytitle>sd_bus_creds_get_mask</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- to determine the mask of fields available.</para>
-
- <para><function>sd_bus_creds_get_pid()</function> will retrieve
- the PID (process identifier). Similarly,
- <function>sd_bus_creds_get_ppid()</function> will retrieve the
- parent PID. Note that PID 1 has no parent process, in which case
- -ENXIO is returned.</para>
-
- <para><function>sd_bus_creds_get_tid()</function> will retrieve the
- TID (thread identifier).</para>
-
- <para><function>sd_bus_creds_get_uid()</function> will retrieve
- the numeric UID (user identifier). Similarly,
- <function>sd_bus_creds_get_euid()</function> returns the effective
- UID, <function>sd_bus_creds_get_suid()</function> the saved UID
- and <function>sd_bus_creds_get_fsuid()</function> the file system
- UID.</para>
-
- <para><function>sd_bus_creds_get_gid()</function> will retrieve the
- numeric GID (group identifier). Similarly,
- <function>sd_bus_creds_get_egid()</function> returns the effective
- GID, <function>sd_bus_creds_get_sgid()</function> the saved GID
- and <function>sd_bus_creds_get_fsgid()</function> the file system
- GID.</para>
-
- <para><function>sd_bus_creds_get_supplementary_gids()</function>
- will retrieve the supplementary GIDs list.</para>
-
- <para><function>sd_bus_creds_get_comm()</function> will retrieve the
- comm field (truncated name of the executable, as stored in
- <filename>/proc/<replaceable>pid</replaceable>/comm</filename>).
- </para>
-
- <para><function>sd_bus_creds_get_tid_comm()</function> will retrieve
- the comm field of the thread (as stored in
- <filename>/proc/<replaceable>pid</replaceable>/task/<replaceable>tid</replaceable>/comm</filename>).
- </para>
-
- <para><function>sd_bus_creds_get_exe()</function> will retrieve
- the path to the program executable (as stored in the
- <filename>/proc/<replaceable>pid</replaceable>/exe</filename>
- link, but with the <literal> (deleted)</literal> suffix removed). Note
- that kernel threads do not have an executable path, in which case
- -ENXIO is returned.</para>
-
- <para><function>sd_bus_creds_get_cmdline()</function> will
- retrieve an array of command line arguments (as stored in
- <filename>/proc/<replaceable>pid</replaceable>/cmdline</filename>). Note
- that kernel threads do not have a command line, in which case
- -ENXIO is returned.</para>
-
- <para><function>sd_bus_creds_get_cgroup()</function> will retrieve
- the cgroup path. See <ulink
- url="https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt">cgroups.txt</ulink>.
- </para>
-
- <para><function>sd_bus_creds_get_unit()</function> will retrieve
- the systemd unit name (in the system instance of systemd) that the
- process is a part of. See
- <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. For
- processes that are not part of a unit, returns -ENXIO.
- </para>
-
- <para><function>sd_bus_creds_get_user_unit()</function> will
- retrieve the systemd unit name (in the user instance of systemd)
- that the process is a part of. See
- <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. For
- processes that are not part of a user unit, returns -ENXIO.
- </para>
-
- <para><function>sd_bus_creds_get_slice()</function> will retrieve
- the systemd slice (a unit in the system instance of systemd) that
- the process is a part of. See
- <citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>. Similarly,
- <function>sd_bus_creds_get_user_slice()</function> retrieves the
- systemd slice of the process, in the user instance of systemd.
- </para>
-
- <para><function>sd_bus_creds_get_session()</function> will
- retrieve the identifier of the login session that the process is
- a part of. See
- <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. For
- processes that are not part of a session, returns -ENXIO.
- </para>
-
- <para><function>sd_bus_creds_get_owner_uid()</function> will
- retrieve the numeric UID (user identifier) of the user who owns
- the login session that the process is a part of. See
- <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
- For processes that are not part of a session, returns -ENXIO.
- </para>
-
- <para><function>sd_bus_creds_has_effective_cap()</function> will check whether the capability specified by
- <parameter>capability</parameter> was set in the effective capabilities mask. A positive return value means that it
- was set, zero means that it was not set, and a negative return value indicates an error. See <citerefentry
- project='man-pages'><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry> and the
- <varname>AmbientCapabilities=</varname> and <varname>CapabilityBoundingSet=</varname> settings in
- <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
- </para>
-
- <para><function>sd_bus_creds_has_permitted_cap()</function> is
- similar to <function>sd_bus_creds_has_effective_cap()</function>,
- but will check the permitted capabilities mask.</para>
-
- <para><function>sd_bus_creds_has_inheritable_cap()</function> is
- similar to <function>sd_bus_creds_has_effective_cap()</function>,
- but will check the inheritable capabilities mask.</para>
-
- <para><function>sd_bus_creds_has_bounding_cap()</function> is
- similar to <function>sd_bus_creds_has_effective_cap()</function>,
- but will check the bounding capabilities mask.</para>
-
- <para><function>sd_bus_creds_get_selinux_context()</function> will
- retrieve the SELinux security context (label) of the process.</para>
-
- <para><function>sd_bus_creds_get_audit_session_id()</function>
- will retrieve the audit session identifier of the process. Returns
- -ENXIO for processes that are not part of an audit session.</para>
-
- <para><function>sd_bus_creds_get_audit_login_uid()</function> will
- retrieve the audit user login identifier (the identifier of the
- user who is "responsible" for the session). Returns -ENXIO for
- processes that are not part of an audit session.</para>
-
- <para><function>sd_bus_creds_get_tty()</function> will retrieve
- the controlling TTY, without the prefixing "/dev/". Returns -ENXIO
- for processes that have no controlling TTY.</para>
-
- <para><function>sd_bus_creds_get_unique_name()</function> will
- retrieve the D-Bus unique name. See <ulink
- url="http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-bus">The
- D-Bus specification</ulink>.</para>
-
- <para><function>sd_bus_creds_get_well_known_names()</function> will
- retrieve the set of D-Bus well-known names. See <ulink
- url="http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-bus">The
- D-Bus specification</ulink>.</para>
-
- <para><function>sd_bus_creds_get_description()</function> will
- retrieve a descriptive name of the bus connection of the
- peer. This name is useful to discern multiple bus connections by
- the same peer, and may be altered by the peer with the
- <citerefentry><refentrytitle>sd_bus_set_description</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- call.</para>
-
- <para>All functions that take a <parameter>const
- char**</parameter> parameter will store the answer there as an
- address of a NUL-terminated string. It will be valid as long as
- <parameter>c</parameter> remains valid, and should not be freed or
- modified by the caller.</para>
-
- <para>All functions that take a <parameter>char***</parameter>
- parameter will store the answer there as an address of an array
- of strings. Each individual string is NUL-terminated, and the
- array is NULL-terminated as a whole. It will be valid as long as
- <parameter>c</parameter> remains valid, and should not be freed or
- modified by the caller.</para>
- </refsect1>
-
- <refsect1>
- <title>Return Value</title>
-
- <para>On success, these calls return 0 or a positive integer. On
- failure, these calls return a negative errno-style error code.
- </para>
- </refsect1>
-
- <refsect1>
- <title>Errors</title>
-
- <para>Returned errors may indicate the following problems:</para>
-
- <variablelist>
- <varlistentry>
- <term><constant>-ENODATA</constant></term>
-
- <listitem><para>The given field is not available in the
- credentials object <parameter>c</parameter>.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>-ENXIO</constant></term>
-
- <listitem><para>The given field is not specified for the described
- process or peer. This will be returned by
- <function>sd_bus_get_unit()</function>,
- <function>sd_bus_get_slice()</function>,
- <function>sd_bus_get_user_unit()</function>,
- <function>sd_bus_get_user_slice()</function>,
- <function>sd_bus_get_session()</function>, and
- <function>sd_bus_get_owner_uid()</function> if the process is
- not part of a systemd system unit, systemd user unit, systemd
- slice, or logind session. It will also be returned by
- <function>sd_bus_creds_get_exe()</function> and
- <function>sd_bus_creds_get_cmdline()</function> for kernel
- threads (since these are not started from an executable binary,
- nor have a command line), and by
- <function>sd_bus_creds_get_audit_session_id()</function> and
- <function>sd_bus_creds_get_audit_login_uid()</function> when
- the process is not part of an audit session, and
- <function>sd_bus_creds_get_tty()</function> if the process has
- no controlling TTY.
- </para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>-EINVAL</constant></term>
-
- <listitem><para>Specified pointer parameter is <constant>NULL</constant>.
- </para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>-ENOMEM</constant></term>
-
- <listitem><para>Memory allocation failed.</para></listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Notes</title>
-
- <para><function>sd_bus_creds_get_pid()</function> and the other
- functions described here are available as a shared library, which
- can be compiled and linked to with the
- <constant>libsystemd</constant> <citerefentry
- project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- file.</para>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
-
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>sd_bus_creds_new_from_pid</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>fork</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>execve</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>credentials</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>proc</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>