1 <?xml version='
1.0'
?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
2 <!DOCTYPE refentry PUBLIC
"-//OASIS//DTD DocBook XML V4.2//EN"
3 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
6 SPDX-License-Identifier: LGPL-2.1+
8 This file is part of systemd.
10 Copyright 2014 Zbigniew Jędrzejewski-Szmek
12 systemd is free software; you can redistribute it and/or modify it
13 under the terms of the GNU Lesser General Public License as published by
14 the Free Software Foundation; either version 2.1 of the License, or
15 (at your option) any later version.
17 systemd is distributed in the hope that it will be useful, but
18 WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 Lesser General Public License for more details.
22 You should have received a copy of the GNU Lesser General Public License
23 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 <refentry id=
"sd_bus_creds_get_pid">
29 <title>sd_bus_creds_get_pid
</title>
30 <productname>systemd
</productname>
34 <contrib>A monkey with a typewriter
</contrib>
35 <firstname>Zbigniew
</firstname>
36 <surname>Jędrzejewski-Szmek
</surname>
37 <email>zbyszek@in.waw.pl
</email>
43 <refentrytitle>sd_bus_creds_get_pid
</refentrytitle>
44 <manvolnum>3</manvolnum>
48 <refname>sd_bus_creds_get_pid
</refname>
49 <refname>sd_bus_creds_get_ppid
</refname>
50 <refname>sd_bus_creds_get_tid
</refname>
51 <refname>sd_bus_creds_get_uid
</refname>
52 <refname>sd_bus_creds_get_euid
</refname>
53 <refname>sd_bus_creds_get_suid
</refname>
54 <refname>sd_bus_creds_get_fsuid
</refname>
55 <refname>sd_bus_creds_get_gid
</refname>
56 <refname>sd_bus_creds_get_egid
</refname>
57 <refname>sd_bus_creds_get_sgid
</refname>
58 <refname>sd_bus_creds_get_fsgid
</refname>
59 <refname>sd_bus_creds_get_supplementary_gids
</refname>
60 <refname>sd_bus_creds_get_comm
</refname>
61 <refname>sd_bus_creds_get_tid_comm
</refname>
62 <refname>sd_bus_creds_get_exe
</refname>
63 <refname>sd_bus_creds_get_cmdline
</refname>
64 <refname>sd_bus_creds_get_cgroup
</refname>
65 <refname>sd_bus_creds_get_unit
</refname>
66 <refname>sd_bus_creds_get_slice
</refname>
67 <refname>sd_bus_creds_get_user_unit
</refname>
68 <refname>sd_bus_creds_get_user_slice
</refname>
69 <refname>sd_bus_creds_get_session
</refname>
70 <refname>sd_bus_creds_get_owner_uid
</refname>
71 <refname>sd_bus_creds_has_effective_cap
</refname>
72 <refname>sd_bus_creds_has_permitted_cap
</refname>
73 <refname>sd_bus_creds_has_inheritable_cap
</refname>
74 <refname>sd_bus_creds_has_bounding_cap
</refname>
75 <refname>sd_bus_creds_get_selinux_context
</refname>
76 <refname>sd_bus_creds_get_audit_session_id
</refname>
77 <refname>sd_bus_creds_get_audit_login_uid
</refname>
78 <refname>sd_bus_creds_get_tty
</refname>
79 <refname>sd_bus_creds_get_unique_name
</refname>
80 <refname>sd_bus_creds_get_well_known_names
</refname>
81 <refname>sd_bus_creds_get_description
</refname>
83 <refpurpose>Retrieve fields from a credentials object
</refpurpose>
88 <funcsynopsisinfo>#include
<systemd/sd-bus.h
></funcsynopsisinfo>
91 <funcdef>int
<function>sd_bus_creds_get_pid
</function></funcdef>
92 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
93 <paramdef>pid_t *
<parameter>pid
</parameter></paramdef>
97 <funcdef>int
<function>sd_bus_creds_get_ppid
</function></funcdef>
98 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
99 <paramdef>pid_t *
<parameter>ppid
</parameter></paramdef>
103 <funcdef>int
<function>sd_bus_creds_get_tid
</function></funcdef>
104 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
105 <paramdef>pid_t *
<parameter>tid
</parameter></paramdef>
109 <funcdef>int
<function>sd_bus_creds_get_uid
</function></funcdef>
110 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
111 <paramdef>uid_t *
<parameter>uid
</parameter></paramdef>
115 <funcdef>int
<function>sd_bus_creds_get_euid
</function></funcdef>
116 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
117 <paramdef>uid_t *
<parameter>uid
</parameter></paramdef>
121 <funcdef>int
<function>sd_bus_creds_get_suid
</function></funcdef>
122 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
123 <paramdef>uid_t *
<parameter>uid
</parameter></paramdef>
127 <funcdef>int
<function>sd_bus_creds_get_fsuid
</function></funcdef>
128 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
129 <paramdef>uid_t *
<parameter>uid
</parameter></paramdef>
133 <funcdef>int
<function>sd_bus_creds_get_gid
</function></funcdef>
134 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
135 <paramdef>gid_t *
<parameter>gid
</parameter></paramdef>
139 <funcdef>int
<function>sd_bus_creds_get_egid
</function></funcdef>
140 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
141 <paramdef>gid_t *
<parameter>gid
</parameter></paramdef>
145 <funcdef>int
<function>sd_bus_creds_get_sgid
</function></funcdef>
146 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
147 <paramdef>gid_t *
<parameter>gid
</parameter></paramdef>
151 <funcdef>int
<function>sd_bus_creds_get_fsgid
</function></funcdef>
152 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
153 <paramdef>gid_t *
<parameter>gid
</parameter></paramdef>
157 <funcdef>int
<function>sd_bus_creds_get_supplementary_gids
</function></funcdef>
158 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
159 <paramdef>const gid_t **
<parameter>gids
</parameter></paramdef>
163 <funcdef>int
<function>sd_bus_creds_get_comm
</function></funcdef>
164 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
165 <paramdef>const char **
<parameter>comm
</parameter></paramdef>
169 <funcdef>int
<function>sd_bus_creds_get_tid_comm
</function></funcdef>
170 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
171 <paramdef>const char **
<parameter>comm
</parameter></paramdef>
175 <funcdef>int
<function>sd_bus_creds_get_exe
</function></funcdef>
176 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
177 <paramdef>const char **
<parameter>exe
</parameter></paramdef>
181 <funcdef>int
<function>sd_bus_creds_get_cmdline
</function></funcdef>
182 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
183 <paramdef>char ***
<parameter>cmdline
</parameter></paramdef>
187 <funcdef>int
<function>sd_bus_creds_get_cgroup
</function></funcdef>
188 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
189 <paramdef>const char **
<parameter>cgroup
</parameter></paramdef>
193 <funcdef>int
<function>sd_bus_creds_get_unit
</function></funcdef>
194 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
195 <paramdef>const char **
<parameter>unit
</parameter></paramdef>
199 <funcdef>int
<function>sd_bus_creds_get_slice
</function></funcdef>
200 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
201 <paramdef>const char **
<parameter>slice
</parameter></paramdef>
205 <funcdef>int
<function>sd_bus_creds_get_user_unit
</function></funcdef>
206 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
207 <paramdef>const char **
<parameter>unit
</parameter></paramdef>
211 <funcdef>int
<function>sd_bus_creds_get_user_slice
</function></funcdef>
212 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
213 <paramdef>const char **
<parameter>slice
</parameter></paramdef>
217 <funcdef>int
<function>sd_bus_creds_get_session
</function></funcdef>
218 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
219 <paramdef>const char **
<parameter>slice
</parameter></paramdef>
223 <funcdef>int
<function>sd_bus_creds_get_owner_uid
</function></funcdef>
224 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
225 <paramdef>uid_t *
<parameter>uid
</parameter></paramdef>
229 <funcdef>int
<function>sd_bus_creds_has_effective_cap
</function></funcdef>
230 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
231 <paramdef>int
<parameter>capability
</parameter></paramdef>
235 <funcdef>int
<function>sd_bus_creds_has_permitted_cap
</function></funcdef>
236 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
237 <paramdef>int
<parameter>capability
</parameter></paramdef>
241 <funcdef>int
<function>sd_bus_creds_has_inheritable_cap
</function></funcdef>
242 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
243 <paramdef>int
<parameter>capability
</parameter></paramdef>
247 <funcdef>int
<function>sd_bus_creds_has_bounding_cap
</function></funcdef>
248 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
249 <paramdef>int
<parameter>capability
</parameter></paramdef>
253 <funcdef>int
<function>sd_bus_creds_get_selinux_context
</function></funcdef>
254 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
255 <paramdef>const char **
<parameter>context
</parameter></paramdef>
259 <funcdef>int
<function>sd_bus_creds_get_audit_session_id
</function></funcdef>
260 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
261 <paramdef>uint32_t *
<parameter>sessionid
</parameter></paramdef>
265 <funcdef>int
<function>sd_bus_creds_get_audit_login_uid
</function></funcdef>
266 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
267 <paramdef>uid_t *
<parameter>loginuid
</parameter></paramdef>
271 <funcdef>int
<function>sd_bus_creds_get_tty
</function></funcdef>
272 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
273 <paramdef>const char **
<parameter>tty
</parameter></paramdef>
277 <funcdef>int
<function>sd_bus_creds_get_unique_name
</function></funcdef>
278 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
279 <paramdef>const char **
<parameter>name
</parameter></paramdef>
283 <funcdef>int
<function>sd_bus_creds_get_well_known_names
</function></funcdef>
284 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
285 <paramdef>char ***
<parameter>name
</parameter></paramdef>
289 <funcdef>int
<function>sd_bus_creds_get_description
</function></funcdef>
290 <paramdef>sd_bus_creds *
<parameter>c
</parameter></paramdef>
291 <paramdef>const char **
<parameter>name
</parameter></paramdef>
298 <title>Description
</title>
300 <para>These functions return credential information from an
301 <parameter>sd_bus_creds
</parameter> object. Credential objects may
303 <citerefentry><refentrytitle>sd_bus_creds_new_from_pid
</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
304 in which case they describe the credentials of the process
305 identified by the specified PID, with
306 <citerefentry><refentrytitle>sd_bus_get_name_creds
</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
307 in which case they describe the credentials of a bus peer
308 identified by the specified bus name, with
309 <citerefentry><refentrytitle>sd_bus_get_owner_creds
</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
310 in which case they describe the credentials of the creator of a
312 <citerefentry><refentrytitle>sd_bus_message_get_creds
</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
313 in which case they describe the credentials of the sender of the
316 <para>Not all credential fields are part of every
317 <literal>sd_bus_creds
</literal> object. Use
318 <citerefentry><refentrytitle>sd_bus_creds_get_mask
</refentrytitle><manvolnum>3</manvolnum></citerefentry>
319 to determine the mask of fields available.
</para>
321 <para><function>sd_bus_creds_get_pid()
</function> will retrieve
322 the PID (process identifier). Similarly,
323 <function>sd_bus_creds_get_ppid()
</function> will retrieve the
324 parent PID. Note that PID
1 has no parent process, in which case
325 -ENXIO is returned.
</para>
327 <para><function>sd_bus_creds_get_tid()
</function> will retrieve the
328 TID (thread identifier).
</para>
330 <para><function>sd_bus_creds_get_uid()
</function> will retrieve
331 the numeric UID (user identifier). Similarly,
332 <function>sd_bus_creds_get_euid()
</function> returns the effective
333 UID,
<function>sd_bus_creds_get_suid()
</function> the saved UID
334 and
<function>sd_bus_creds_get_fsuid()
</function> the file system
337 <para><function>sd_bus_creds_get_gid()
</function> will retrieve the
338 numeric GID (group identifier). Similarly,
339 <function>sd_bus_creds_get_egid()
</function> returns the effective
340 GID,
<function>sd_bus_creds_get_sgid()
</function> the saved GID
341 and
<function>sd_bus_creds_get_fsgid()
</function> the file system
344 <para><function>sd_bus_creds_get_supplementary_gids()
</function>
345 will retrieve the supplementary GIDs list.
</para>
347 <para><function>sd_bus_creds_get_comm()
</function> will retrieve the
348 comm field (truncated name of the executable, as stored in
349 <filename>/proc/
<replaceable>pid
</replaceable>/comm
</filename>).
352 <para><function>sd_bus_creds_get_tid_comm()
</function> will retrieve
353 the comm field of the thread (as stored in
354 <filename>/proc/
<replaceable>pid
</replaceable>/task/
<replaceable>tid
</replaceable>/comm
</filename>).
357 <para><function>sd_bus_creds_get_exe()
</function> will retrieve
358 the path to the program executable (as stored in the
359 <filename>/proc/
<replaceable>pid
</replaceable>/exe
</filename>
360 link, but with the
<literal> (deleted)
</literal> suffix removed). Note
361 that kernel threads do not have an executable path, in which case
362 -ENXIO is returned.
</para>
364 <para><function>sd_bus_creds_get_cmdline()
</function> will
365 retrieve an array of command line arguments (as stored in
366 <filename>/proc/
<replaceable>pid
</replaceable>/cmdline
</filename>). Note
367 that kernel threads do not have a command line, in which case
368 -ENXIO is returned.
</para>
370 <para><function>sd_bus_creds_get_cgroup()
</function> will retrieve
371 the control group path. See
<ulink
372 url=
"https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt">cgroups.txt
</ulink>.
375 <para><function>sd_bus_creds_get_unit()
</function> will retrieve
376 the systemd unit name (in the system instance of systemd) that the
377 process is a part of. See
378 <citerefentry><refentrytitle>systemd.unit
</refentrytitle><manvolnum>5</manvolnum></citerefentry>. For
379 processes that are not part of a unit, returns -ENXIO.
382 <para><function>sd_bus_creds_get_user_unit()
</function> will
383 retrieve the systemd unit name (in the user instance of systemd)
384 that the process is a part of. See
385 <citerefentry><refentrytitle>systemd.unit
</refentrytitle><manvolnum>5</manvolnum></citerefentry>. For
386 processes that are not part of a user unit, returns -ENXIO.
389 <para><function>sd_bus_creds_get_slice()
</function> will retrieve
390 the systemd slice (a unit in the system instance of systemd) that
391 the process is a part of. See
392 <citerefentry><refentrytitle>systemd.slice
</refentrytitle><manvolnum>5</manvolnum></citerefentry>. Similarly,
393 <function>sd_bus_creds_get_user_slice()
</function> retrieves the
394 systemd slice of the process, in the user instance of systemd.
397 <para><function>sd_bus_creds_get_session()
</function> will
398 retrieve the identifier of the login session that the process is
399 a part of. Please note the login session may be limited to a stub
400 process or two. User processes may instead be started from their
401 systemd user manager, e.g. GUI applications started using DBus
402 activation, as well as service processes which are shared between
403 multiple logins of the same user. For processes that are not part
404 of a session, returns -ENXIO.
</para>
406 <para><function>sd_bus_creds_get_owner_uid()
</function> will
407 retrieve the numeric UID (user identifier) of the user who owns
408 the user unit or login session that the process is a part of. See
409 <citerefentry><refentrytitle>systemd-logind.service
</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
410 For processes that are not part of a user unit or session, returns
414 <para><function>sd_bus_creds_has_effective_cap()
</function> will check whether the capability specified by
415 <parameter>capability
</parameter> was set in the effective capabilities mask. A positive return value means that it
416 was set, zero means that it was not set, and a negative return value indicates an error. See
<citerefentry
417 project='man-pages'
><refentrytitle>capabilities
</refentrytitle><manvolnum>7</manvolnum></citerefentry> and the
418 <varname>AmbientCapabilities=
</varname> and
<varname>CapabilityBoundingSet=
</varname> settings in
419 <citerefentry><refentrytitle>systemd.exec
</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
422 <para><function>sd_bus_creds_has_permitted_cap()
</function> is
423 similar to
<function>sd_bus_creds_has_effective_cap()
</function>,
424 but will check the permitted capabilities mask.
</para>
426 <para><function>sd_bus_creds_has_inheritable_cap()
</function> is
427 similar to
<function>sd_bus_creds_has_effective_cap()
</function>,
428 but will check the inheritable capabilities mask.
</para>
430 <para><function>sd_bus_creds_has_bounding_cap()
</function> is
431 similar to
<function>sd_bus_creds_has_effective_cap()
</function>,
432 but will check the bounding capabilities mask.
</para>
434 <para><function>sd_bus_creds_get_selinux_context()
</function> will
435 retrieve the SELinux security context (label) of the process.
</para>
437 <para><function>sd_bus_creds_get_audit_session_id()
</function>
438 will retrieve the audit session identifier of the process. Returns
439 -ENXIO for processes that are not part of an audit session.
</para>
441 <para><function>sd_bus_creds_get_audit_login_uid()
</function> will
442 retrieve the audit user login identifier (the identifier of the
443 user who is
"responsible" for the session). Returns -ENXIO for
444 processes that are not part of an audit session.
</para>
446 <para><function>sd_bus_creds_get_tty()
</function> will retrieve
447 the controlling TTY, without the prefixing
"/dev/". Returns -ENXIO
448 for processes that have no controlling TTY.
</para>
450 <para><function>sd_bus_creds_get_unique_name()
</function> will
451 retrieve the D-Bus unique name. See
<ulink
452 url=
"http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-bus">The
453 D-Bus specification
</ulink>.
</para>
455 <para><function>sd_bus_creds_get_well_known_names()
</function> will
456 retrieve the set of D-Bus well-known names. See
<ulink
457 url=
"http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-bus">The
458 D-Bus specification
</ulink>.
</para>
460 <para><function>sd_bus_creds_get_description()
</function> will
461 retrieve a descriptive name of the bus connection of the
462 peer. This name is useful to discern multiple bus connections by
463 the same peer, and may be altered by the peer with the
464 <citerefentry><refentrytitle>sd_bus_set_description
</refentrytitle><manvolnum>3</manvolnum></citerefentry>
467 <para>All functions that take a
<parameter>const
468 char**
</parameter> parameter will store the answer there as an
469 address of a NUL-terminated string. It will be valid as long as
470 <parameter>c
</parameter> remains valid, and should not be freed or
471 modified by the caller.
</para>
473 <para>All functions that take a
<parameter>char***
</parameter>
474 parameter will store the answer there as an address of an array
475 of strings. Each individual string is NUL-terminated, and the
476 array is NULL-terminated as a whole. It will be valid as long as
477 <parameter>c
</parameter> remains valid, and should not be freed or
478 modified by the caller.
</para>
482 <title>Return Value
</title>
484 <para>On success, these calls return
0 or a positive integer. On
485 failure, these calls return a negative errno-style error code.
490 <title>Errors
</title>
492 <para>Returned errors may indicate the following problems:
</para>
496 <term><constant>-ENODATA
</constant></term>
498 <listitem><para>The given field is not available in the
499 credentials object
<parameter>c
</parameter>.
</para>
504 <term><constant>-ENXIO
</constant></term>
506 <listitem><para>The given field is not specified for the described
507 process or peer. This will be returned by
508 <function>sd_bus_creds_get_unit()
</function>,
509 <function>sd_bus_creds_get_slice()
</function>,
510 <function>sd_bus_creds_get_user_unit()
</function>,
511 <function>sd_bus_creds_get_user_slice()
</function>, and
512 <function>sd_bus_creds_get_session()
</function> if the process is
513 not part of a systemd system unit, systemd user unit, systemd
514 slice, or logind session. It will be returned by
515 <function>sd_bus_creds_get_owner_uid()
</function> if the process is
516 not part of a systemd user unit or logind session. It will also be
517 returned by
<function>sd_bus_creds_get_exe()
</function> and
518 <function>sd_bus_creds_get_cmdline()
</function> for kernel
519 threads (since these are not started from an executable binary,
520 nor have a command line), and by
521 <function>sd_bus_creds_get_audit_session_id()
</function> and
522 <function>sd_bus_creds_get_audit_login_uid()
</function> when
523 the process is not part of an audit session, and
524 <function>sd_bus_creds_get_tty()
</function> if the process has
531 <term><constant>-EINVAL
</constant></term>
533 <listitem><para>Specified pointer parameter is
<constant>NULL
</constant>.
538 <term><constant>-ENOMEM
</constant></term>
540 <listitem><para>Memory allocation failed.
</para></listitem>
548 <para><function>sd_bus_creds_get_pid()
</function> and the other
549 functions described here are available as a shared library, which
550 can be compiled and linked to with the
551 <constant>libsystemd
</constant> <citerefentry
552 project='die-net'
><refentrytitle>pkg-config
</refentrytitle><manvolnum>1</manvolnum></citerefentry>
557 <title>See Also
</title>
560 <citerefentry><refentrytitle>systemd
</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
561 <citerefentry><refentrytitle>sd-bus
</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
562 <citerefentry><refentrytitle>sd_bus_creds_new_from_pid
</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
563 <citerefentry project='man-pages'
><refentrytitle>fork
</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
564 <citerefentry project='man-pages'
><refentrytitle>execve
</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
565 <citerefentry project='man-pages'
><refentrytitle>credentials
</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
566 <citerefentry project='man-pages'
><refentrytitle>free
</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
567 <citerefentry project='man-pages'
><refentrytitle>proc
</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
568 <citerefentry><refentrytitle>systemd.journal-fields
</refentrytitle><manvolnum>7</manvolnum></citerefentry>