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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /man/sd_id128_randomize.xml | |
parent | Initial commit. (diff) | |
download | systemd-b750101eb236130cf056c675997decbac904cc49.tar.xz systemd-b750101eb236130cf056c675997decbac904cc49.zip |
Adding upstream version 252.22.upstream/252.22
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man/sd_id128_randomize.xml')
-rw-r--r-- | man/sd_id128_randomize.xml | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/man/sd_id128_randomize.xml b/man/sd_id128_randomize.xml new file mode 100644 index 0000000..2df3547 --- /dev/null +++ b/man/sd_id128_randomize.xml @@ -0,0 +1,80 @@ +<?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="sd_id128_randomize" xmlns:xi="http://www.w3.org/2001/XInclude"> + + <refentryinfo> + <title>sd_id128_randomize</title> + <productname>systemd</productname> + </refentryinfo> + + <refmeta> + <refentrytitle>sd_id128_randomize</refentrytitle> + <manvolnum>3</manvolnum> + </refmeta> + + <refnamediv> + <refname>sd_id128_randomize</refname> + <refpurpose>Generate 128-bit IDs</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcsynopsisinfo>#include <systemd/sd-id128.h></funcsynopsisinfo> + + <funcprototype> + <funcdef>int <function>sd_id128_randomize</function></funcdef> + <paramdef>sd_id128_t *<parameter>ret</parameter></paramdef> + </funcprototype> + + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><function>sd_id128_randomize()</function> generates a new randomized 128-bit ID and returns it in + <parameter>ret</parameter>. Every invocation returns a new randomly generated ID. This uses the + <citerefentry + project='man-pages'><refentrytitle>getrandom</refentrytitle><manvolnum>2</manvolnum></citerefentry> + kernel random number generator.</para> + + <para>Note that <function>sd_id128_randomize()</function> always returns a UUID Variant 1 Version 4 + compatible ID. It is hence guaranteed that this function will never return the ID consisting of all zero + or all one bits (<constant>SD_ID128_NULL</constant>, <constant>SD_ID128_ALLF</constant>).</para> + + <para>For more information about the <literal>sd_id128_t</literal> + type, see + <citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para> + + <para><citerefentry><refentrytitle>systemd-id128</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s + <command>new</command> command may be used as a command line front-end for + <function>sd_id128_randomize()</function>.</para> + </refsect1> + + <refsect1> + <title>Return Value</title> + + <para>The call returns 0 on success (in which case + <parameter>ret</parameter> is filled in), or a negative + errno-style error code.</para> + </refsect1> + + <xi:include href="libsystemd-pkgconfig.xml" /> + + <refsect1> + <title>See Also</title> + + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>3</manvolnum></citerefentry>, + <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry project='man-pages'><refentrytitle>getrandom</refentrytitle><manvolnum>2</manvolnum></citerefentry>, + <citerefentry project='man-pages'><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry>, + <citerefentry><refentrytitle>sd_id128_get_machine</refentrytitle><manvolnum>3</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |