diff options
| -rw-r--r-- | Makefile.am | 23 | ||||
| -rw-r--r-- | TODO | 4 | ||||
| -rw-r--r-- | man/machine-id.xml | 4 | ||||
| -rw-r--r-- | man/sd-id128.xml | 168 | ||||
| -rw-r--r-- | man/sd_id128_randomize.xml | 157 | ||||
| -rw-r--r-- | man/sd_id128_to_string.xml | 131 |
6 files changed, 484 insertions, 3 deletions
diff --git a/Makefile.am b/Makefile.am index 3b7ec0b7b..540eb80f1 100644 --- a/Makefile.am +++ b/Makefile.am @@ -501,7 +501,10 @@ MANPAGES = \ man/systemd-getty-generator.8 \ man/systemd-system-update-generator.8 \ man/systemd-fstab-generator.8 \ - man/systemd.preset.5 + man/systemd.preset.5 \ + man/sd-id128.7 \ + man/sd_id128_to_string.3 \ + man/sd_id128_randomize.3 MANPAGES_ALIAS = \ man/reboot.8 \ @@ -530,7 +533,15 @@ MANPAGES_ALIAS = \ man/systemd-ask-password-wall.path.8 \ man/systemd-tmpfiles-setup.service.8 \ man/systemd-tmpfiles-clean.service.8 \ - man/systemd-tmpfiles-clean.timer.8 + man/systemd-tmpfiles-clean.timer.8 \ + man/sd_id128_t.7 \ + man/SD_ID128_MAKE.7 \ + man/SD_ID128_FORMAT_STR.7 \ + man/SD_ID128_FORMAT_VAL.7 \ + man/sd_id128_equal.7 \ + man/sd_id128_from_string.3 \ + man/sd_id128_get_machine.3 \ + man/sd_id128_get_boot.3 man/reboot.8: man/halt.8 man/poweroff.8: man/halt.8 @@ -559,6 +570,14 @@ man/systemd-ask-password-wall.path.8: man/systemd-ask-password-console.service.8 man/systemd-tmpfiles-setup.service.8: man/systemd-tmpfiles.8 man/systemd-tmpfiles-clean.service.8: man/systemd-tmpfiles.8 man/systemd-tmpfiles-clean.timer.8: man/systemd-tmpfiles.8 +man/sd_id128_t.7: man/sd-id128.7 +man/SD_ID128_MAKE.7: man/sd-id128.7 +man/SD_ID128_FORMAT_STR.7: man/sd-id128.7 +man/SD_ID128_FORMAT_VAL.7: man/sd-id128.7 +man/sd_id128_equal.7: man/sd-id128.7 +man/sd_id128_from_string.3: man/sd_id128_to_string.3 +man/sd_id128_get_machine.3: man/sd_id128_randomize.3 +man/sd_id128_get_boot.3: man/sd_id128_randomize.3 XML_FILES = \ ${patsubst %.1,%.xml,${patsubst %.3,%.xml,${patsubst %.5,%.xml,${patsubst %.7,%.xml,${patsubst %.8,%.xml,$(MANPAGES)}}}}} @@ -22,6 +22,10 @@ Bugfixes: Features: +* journalctl highlight reboots + +* Merge KillUnit()'s mode and who params into one + * load-fragment: when loading a unit file via a chain of symlinks verify that it isn't masked via any of the names traversed. diff --git a/man/machine-id.xml b/man/machine-id.xml index 73f0926c0..a42c7bb5a 100644 --- a/man/machine-id.xml +++ b/man/machine-id.xml @@ -136,7 +136,9 @@ id[8] = (id[8] & 0x3F) | 0x80;</programlisting> <citerefentry><refentrytitle>gethostid</refentrytitle><manvolnum>3</manvolnum></citerefentry>, <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>, <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> + <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>7</manvolnum></citerefentry>, + <citerefentry><refentrytitle>sd_id128_get_machine</refentrytitle><manvolnum>3</manvolnum></citerefentry> </para> </refsect1> diff --git a/man/sd-id128.xml b/man/sd-id128.xml new file mode 100644 index 000000000..cbc130d75 --- /dev/null +++ b/man/sd-id128.xml @@ -0,0 +1,168 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<!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 2012 Lennart Poettering + + 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-id128"> + + <refentryinfo> + <title>sd-id128</title> + <productname>systemd</productname> + + <authorgroup> + <author> + <contrib>Developer</contrib> + <firstname>Lennart</firstname> + <surname>Poettering</surname> + <email>lennart@poettering.net</email> + </author> + </authorgroup> + </refentryinfo> + + <refmeta> + <refentrytitle>sd-id128</refentrytitle> + <manvolnum>7</manvolnum> + </refmeta> + + <refnamediv> + <refname>sd-id128</refname> + <refname>sd_id128_t</refname> + <refname>SD_ID128_MAKE</refname> + <refname>SD_ID128_FORMAT_STR</refname> + <refname>SD_ID128_FORMAT_VAL</refname> + <refname>sd_id128_equal</refname> + <refpurpose>APIs for processing 128 bit IDs</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcsynopsisinfo>#include <systemd/sd-id128.h></funcsynopsisinfo> + </funcsynopsis> + + <cmdsynopsis> + <command>pkg-config --cflags --libs libsystemd-id128</command> + </cmdsynopsis> + + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><filename>sd-id128.h</filename> provides APIs to + process and generate 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="http://tools.ietf.org/html/rfc4122">RFC + 4122</ulink>, though use a simpler string + formatting. These functions impose no structure on the + used IDs, much unlike OSF UUIDs or Microsoft GUIDs, + but are fully compatible with those types of IDs. + </para> + + <para>See + <citerefentry><refentrytitle>sd_id128_to_string</refentrytitle><manvolnum>3</manvolnum></citerefentry> and + <citerefentry><refentrytitle>sd_id128_randomize</refentrytitle><manvolnum>3</manvolnum></citerefentry> + for more information about the functions + implemented.</para> + + <para>A 128 bit ID is implemented as the following + union type:</para> + + <programlisting>typedef union sd_id128 { + uint8_t bytes[16]; + uint64_t qwords[2]; +} sd_id128_t;</programlisting> + + <para>This union type allows accessing the 128 bit ID + as 16 separate bytes or 2 64 bit words. It is generally + safer to access the ID components by their 8 bit array + to avoid endianess issues. This union is intended to + be passed call-by-value (as opposed to + call-by-reference) and may be directly manipulated by + clients.</para> + + <para>A couple of macros are defined to denote and + decode 128 bit IDs:</para> + + <para><function>SD_ID128_MAKE()</function> may be used + to write a 128 bit ID in source code. A commonly used + idiom is to give 128 bit IDs names using this macro:</para> + + <programlisting>#define SD_MESSAGE_COREDUMP SD_ID128_MAKE(fc,2e,22,bc,6e,e6,47,b6,b9,07,29,ab,34,a2,50,b1)</programlisting> + + <para><function>SD_ID128_FORMAT_STR</function> and + <function>SD_ID128_FORMAT_VAL()</function> may be used + to format a 128 bit ID in a + <citerefentry><refentrytitle>printf</refentrytitle><manvolnum>3</manvolnum></citerefentry> + format string, as shown in the following + example:</para> + + <programlisting>int main(int argc, char *argv[]) { + sd_id128_t id; + id = SD_ID128_MAKE(ee,89,be,71,bd,6e,43,d6,91,e6,c5,5d,eb,03,02,07); + printf("The ID encoded in this C file is " SD_ID128_FORMAT_STR ".\n", SD_ID128_FORMAT_VAL(id)); + return 0; +}</programlisting> + + <para>Use <function>sd_id128_equal()</function> to compare two 128 bit IDs:</para> + + <programlisting>int main(int argc, char *argv[]) { + sd_id128_t a, b, c; + a = SD_ID128_MAKE(ee,89,be,71,bd,6e,43,d6,91,e6,c5,5d,eb,03,02,07); + b = SD_ID128_MAKE(f2,28,88,9c,5f,09,44,15,9d,d7,04,77,58,cb,e7,3e); + c = a; + assert(sd_id128_equal(a, c)); + assert(!sd_id128_equal(a, b)); + return 0; +}</programlisting> + + <para>Note that new, randomized IDs may be generated + with + <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s + <literal>--new-id</literal> command.</para> + </refsect1> + + <refsect1> + <title>Notes</title> + + <para>These APIs are implemented as shared library, + which can be compiled and linked to with the + <literal>libsystemd-id128</literal> + <citerefentry><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_id128_to_string</refentrytitle><manvolnum>3</manvolnum></citerefentry>, + <citerefentry><refentrytitle>sd_id128_randomize</refentrytitle><manvolnum>3</manvolnum></citerefentry>, + <citerefentry><refentrytitle>printf</refentrytitle><manvolnum>3</manvolnum></citerefentry>, + <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>7</manvolnum></citerefentry>, + <citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/man/sd_id128_randomize.xml b/man/sd_id128_randomize.xml new file mode 100644 index 000000000..499c55fb6 --- /dev/null +++ b/man/sd_id128_randomize.xml @@ -0,0 +1,157 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<!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 2012 Lennart Poettering + + 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_id128_randomize"> + + <refentryinfo> + <title>sd_id128_randomize</title> + <productname>systemd</productname> + + <authorgroup> + <author> + <contrib>Developer</contrib> + <firstname>Lennart</firstname> + <surname>Poettering</surname> + <email>lennart@poettering.net</email> + </author> + </authorgroup> + </refentryinfo> + + <refmeta> + <refentrytitle>sd_id128_randomize</refentrytitle> + <manvolnum>3</manvolnum> + </refmeta> + + <refnamediv> + <refname>sd_id128_randomize</refname> + <refname>sd_id128_get_machine</refname> + <refname>sd_id128_get_boot</refname> + <refpurpose>Generate or retrieve 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> + + <funcprototype> + <funcdef>int <function>sd_id128_get_machine</function></funcdef> + <paramdef>sd_id128_t* <parameter>ret</parameter></paramdef> + </funcprototype> + + <funcprototype> + <funcdef>int <function>sd_id128_get_boot</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 + <filename>/dev/urandom</filename> kernel random number + generator.</para> + + <para><function>sd_id128_get_machine()</function> + returns the machine ID of the executing host. This + reads and parses the + <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> + file. This function caches the machine ID internally + to make retrieving the machine ID a cheap + operation.</para> + + <para><function>sd_id128_get_boot()</function> returns + the boot ID of the executing kernel. This reads and + parses the + <filename>/proc/sys/kernel/random/boot_id</filename> + file exposed by the kernel. It is randomly generated + early at boot and is unique for every running kernel + instance. See + <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> + for more information. This function also internally + caches the returned ID to make this call a cheap + operation.</para> + + <para>Note that + <function>sd_id128_randomize()</function> and + <function>sd_id128_get_boot()</function> always return + a UUID v4 compatible + ID. <function>sd_id128_get_machine()</function> will + also return a UUID v4 compatible ID on new + installations, but might not on older. It is possible + to convert the machine ID into an UUID v4 compatible + one. For more information see + <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> + + <para>For more information about the + <literal>sd_id128_t</literal> type see + <citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para> + + <para><citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s + <literal>--new-id</literal> command may be used as + command line front-end for + <function>sd_id128_randomize()</function>.</para> + </refsect1> + + <refsect1> + <title>Return Value</title> + + <para>The three calls returns 0 on success (in which + case <parameter>ret</parameter> is filled in), or a + negative errno-style error code.</para> + </refsect1> + + <refsect1> + <title>Notes</title> + + <para>The <function>sd_id128_randomize()</function>, + <function>sd_id128_get_machine()</function> and + <function>sd_id128_get_boot()</function> interfaces + are available as shared library, which can be compiled + and linked to with the + <literal>libsystemd-id128</literal> + <citerefentry><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-id128</refentrytitle><manvolnum>7</manvolnum></citerefentry>, + <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/man/sd_id128_to_string.xml b/man/sd_id128_to_string.xml new file mode 100644 index 000000000..3a171550e --- /dev/null +++ b/man/sd_id128_to_string.xml @@ -0,0 +1,131 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<!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 2012 Lennart Poettering + + 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_id128_to_string"> + + <refentryinfo> + <title>sd_id128_to_string</title> + <productname>systemd</productname> + + <authorgroup> + <author> + <contrib>Developer</contrib> + <firstname>Lennart</firstname> + <surname>Poettering</surname> + <email>lennart@poettering.net</email> + </author> + </authorgroup> + </refentryinfo> + + <refmeta> + <refentrytitle>sd_id128_to_string</refentrytitle> + <manvolnum>3</manvolnum> + </refmeta> + + <refnamediv> + <refname>sd_id128_to_string</refname> + <refname>sd_id128_from_string</refname> + <refpurpose>Format or parse 128 bit IDs as strings</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcsynopsisinfo>#include <systemd/sd-id128.h></funcsynopsisinfo> + + <funcprototype> + <funcdef>char* <function>sd_id128_to_string</function></funcdef> + <paramdef>sd_id128_t <parameter>id</parameter>, char <parameter>s</parameter>[33]</paramdef> + </funcprototype> + + <funcprototype> + <funcdef>int <function>sd_id128_from_string</function></funcdef> + <paramdef>const char <parameter>s</parameter>[33], sd_id128_t* <parameter>ret</parameter></paramdef> + </funcprototype> + + </funcsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><function>sd_id128_to_string()</function> + formats a 128 bit ID as character string. It expects + the ID and a string array capable of storing 33 + characters. The ID will be formatted as 32 lowercase + hexadecimal digits and be terminated by a NUL + byte.</para> + + <para><function>sd_id128_from_string()</function> + implements the reverse operation: it takes a 33 + character array with 32 hexadecimial digits + (terminated by NUL) and parses them back into an + 128 bit ID returned in + <parameter>ret</parameter>.</para> + + <para>For more information about the + <literal>sd_id128_t</literal> type see + <citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para> + + <para>When formatting a 128 bit ID into a string it is + often easier to use a format string for + <citerefentry><refentrytitle>printf</refentrytitle><manvolnum>3</manvolnum></citerefentry>. This + is easly done using the + <function>SD_ID128_FORMAT_STR</function> and + <function>SD_ID128_FORMAT_VAL()</function> macros. For + more information see + <citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para> + </refsect1> + + <refsect1> + <title>Return Value</title> + + <para><function>sd_id128_to_string()</function> always + succeeds and returns a pointer to the string array + passed in. <function>sd_id128_from_string</function> + returns 0 on success (in which case + <parameter>ret</parameter> is filled in), or a negative + errno-style error code.</para> + </refsect1> + + <refsect1> + <title>Notes</title> + + <para>The <function>sd_id128_to_string()</function> + and <function>sd_id128_from_string()</function> interfaces are + available as shared library, which can be compiled and + linked to with the <literal>libsystemd-id128</literal> + <citerefentry><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-id128</refentrytitle><manvolnum>7</manvolnum></citerefentry>, + <citerefentry><refentrytitle>printf</refentrytitle><manvolnum>3</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |