man: add systemd-coredump(8) and a bunch of links
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Zbigniew Jędrzejewski-Szmek
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5146e7e8ae
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@ -687,7 +687,8 @@ endif
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if ENABLE_COREDUMP
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MANPAGES += \
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man/coredump.conf.5 \
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man/coredumpctl.1
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man/coredumpctl.1 \
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man/systemd-coredump.8
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MANPAGES_ALIAS += \
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#
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@ -1601,6 +1602,7 @@ EXTRA_DIST += \
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man/systemd-cat.xml \
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man/systemd-cgls.xml \
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man/systemd-cgtop.xml \
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man/systemd-coredump.xml \
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man/systemd-cryptsetup-generator.xml \
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man/systemd-cryptsetup@.service.xml \
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man/systemd-debug-generator.xml \
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@ -210,6 +210,8 @@
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd-coredump</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>coredump.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>gdb</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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@ -908,6 +908,7 @@
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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@ -0,0 +1,105 @@
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<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2014 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-coredump" conditional='ENABLE_COREDUMP'
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-coredump</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-coredump</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-coredump</refname>
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<refpurpose>Log and store core dumps</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/usr/lib/systemd/systemd-coredump</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-coredump</command> can be used as a helper
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binary by the kernel when a user space program receives a fatal
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signal and dumps core. For it to be used in this capacity, it must
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be specified by the
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<varname>kernel.core_pattern</varname> <citerefentry project='man-pages'><refentrytitle>sysctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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setting. Systemd installs
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<filename>/usr/lib/sysctl.d/50-coredump.conf</filename> which
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configures <varname>kernel.core_pattern</varname> to invoke
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<command>systemd-coredump</command>. This file may be masked or
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overriden to use a different setting following normal
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<citerefentry><refentrytitle>sysctl.d</refentrytitle><manvolnum>5</manvolnum></citerefentry> rules.</para>
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<para>The behaviour of a specific program upon reception of a
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signal is governed by a few factors which are described in detail
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in <citerefentry project='man-pages'><refentrytitle>core</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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In particular, the coredump will only be processed when the
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related resource limits are high enough. For programs started by
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<command>systemd</command> those may be set using
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<varname>LimitCore=</varname> (see
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>).
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</para>
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<para><command>systemd-coredump</command> will log the coredump
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including a backtrace if possible, and store the core (contents of
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process' memory contents) in an external file on disk in
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<filename>/var/lib/systemd/coredump</filename>, or directly in
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the journal. This behaviour may be modified using
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<citerefentry><refentrytitle>coredump.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
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<para>Apart from the
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<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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log viewer,
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<citerefentry><refentrytitle>coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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may be used to list and extract coredumps.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>coredump.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>core</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sysctl.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-sysctl.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
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</para>
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</refsect1>
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</refentry>
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@ -248,6 +248,7 @@
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<citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-coredump</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>setfacl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<command>pydoc systemd.journal</command>.
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</para>
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@ -5,6 +5,8 @@
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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# See sysctl.d(5) and core(5) for for details.
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# See sysctl.d(5) for the description of the files in this directory,
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# and systemd-coredump(8) and core(5) for the explanation of the
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# setting below.
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kernel.core_pattern=|@rootlibexecdir@/systemd-coredump %p %u %g %s %t %e
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