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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2012-10-19 12:29:46 +0200
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2012-10-19 15:15:38 +0000
commit5de0409e54580b1e8929d9e09f970dfe339cec7b (patch)
tree9851afed3add06964af37cb2f4c7a23fa1025bc3 /man/systemd-coredumpctl.xml
parentaccfdb7abfe0dad7c8e7e5364d93ad962895acfc (diff)
journal: add tool to extract coredumps
'systemd-coredumpctl' will list available coredumps: PID UID GID sig exe 32452 500 500 11 /home/zbyszek/systemd/build/journalctl 32666 500 500 11 /usr/lib64/valgrind/memcheck-amd64-linux ... 'systemd-coredumpctl dump PID' will write the coredump to specified file or stdout.
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diff --git a/man/systemd-coredumpctl.xml b/man/systemd-coredumpctl.xml
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+<?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 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="systemd-coredumpctl">
+
+ <refentryinfo>
+ <title>systemd-coredumpctl</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Zbigniew</firstname>
+ <surname>Jędrzejewski-Szmek</surname>
+ <email>zbyszek@in.waw.pl</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd-coredumpctl</refentrytitle>
+ <manvolnum>1</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd-coredumpctl</refname>
+ <refpurpose>Retrieve coredumps from the journal</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <cmdsynopsis>
+ <command>systemd-coredumpctl <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="req">COMMAND</arg> <arg choice="opt" rep="repeat">PID|COMM|EXE|MATCH</arg></command>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><command>systemd-coredumpctl</command> may be used to
+ retrieve coredumps from
+ <citerefentry><refentrytitle>systemd-journald</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>The following options are understood:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>--help</option></term>
+ <term><option>-h</option></term>
+
+ <listitem><para>Print a short help
+ text and exit.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--version</option></term>
+
+ <listitem><para>Print a short version
+ string and exit.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--output=FILE</option></term>
+ <term><option>-o FILE</option></term>
+
+ <listitem><para>Write the core to
+ <option>FILE</option>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--no-pager</option></term>
+
+ <listitem><para>Do not pipe output of
+ <command>list</command> into a
+ pager.</para></listitem>
+ </varlistentry>
+
+ </variablelist>
+
+ <para>The following commands are understood:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><command>list</command></term>
+
+ <listitem><para>List coredumps captured in the journal
+ matching specified characteristics.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><command>dump</command></term>
+
+ <listitem><para>Extract the last coredump
+ matching specified characteristics.
+ Coredump will be written on stdout, unless
+ an output file is specified with
+ <option>-o/--output</option>.
+ </para></listitem>
+ </varlistentry>
+
+ </variablelist>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Matching</title>
+
+ <para>Match can be:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>PID</option></term>
+
+ <listitem><para>Process ID of the
+ process that dumped
+ core. An integer.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>COMM</option></term>
+
+ <listitem><para>Name of the executable
+ (matches <option>COREDUMP_COMM=</option>).
+ Must not contain slashes.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>EXE</option></term>
+
+ <listitem><para>Path to the executable
+ (matches <option>COREDUMP_EXE=</option>).
+ Must contain at least one slash.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>MATCH</option></term>
+
+ <listitem><para>General journalctl predicates
+ (see <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>).
+ Must contain an equals sign.
+ </para></listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Exit status</title>
+ <para>On success 0 is returned, a non-zero failure
+ code otherwise. Not finding any mathing coredumps is treated
+ as failure.
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>