12b42c7667
This did not really work out as we had hoped. Trying to do this upstream introduced several problems that probably makes it better suited as a downstream patch after all. At any rate, it is not releaseable in the current state, so we at least need to revert this before the release. * by adjusting the path to binaries, but not do the same thing to the search path we end up with inconsistent man-pages. Adjusting the search path too would be quite messy, and it is not at all obvious that this is worth the effort, but at any rate it would have to be done before we could ship this. * this means that distributed man-pages does not make sense as they depend on config options, and for better or worse we are still distributing man pages, so that is something that definitely needs sorting out before we could ship with this patch. * we have long held that split-usr is only minimally supported in order to boot, and something we hope will eventually go away. So before we start adding even more magic/effort in order to make this work nicely, we should probably question if it makes sense at all.
154 lines
6 KiB
XML
154 lines
6 KiB
XML
<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
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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="sd_bus_message_append_string_memfd"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>sd_bus_message_append_string_memfd</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>A monkey with a typewriter</contrib>
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<firstname>Zbigniew</firstname>
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<surname>Jędrzejewski-Szmek</surname>
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<email>zbyszek@in.waw.pl</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>sd_bus_message_append_string_memfd</refentrytitle>
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<manvolnum>3</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>sd_bus_message_append_string_memfd</refname>
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<refname>sd_bus_message_append_string_iovec</refname>
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<refname>sd_bus_message_append_string_space</refname>
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<refpurpose>Attach a string to a message</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<funcsynopsis>
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<funcsynopsisinfo>#include <systemd/sd-bus.h></funcsynopsisinfo>
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<funcprototype>
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<funcdef>int sd_bus_message_append_string_memfd</funcdef>
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<paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
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<paramdef>int <parameter>memfd</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>int sd_bus_message_append_string_iovec</funcdef>
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<paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
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<paramdef>const struct iovec *<parameter>iov</parameter></paramdef>
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<paramdef>unsigned <parameter>n</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>int sd_bus_message_append_string_space</funcdef>
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<paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
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<paramdef>size_t <parameter>size</parameter></paramdef>
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<paramdef>char **<parameter>s</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>The functions
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<function>sd_bus_message_append_string_memfd</function> and
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<function>sd_bus_message_append_string_iovec</function> can be
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used to append a single string (item of type <literal>s</literal>)
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to message <parameter>m</parameter>.</para>
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<para>In case of
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<function>sd_bus_message_append_string_memfd</function>, the
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contents of <parameter>memfd</parameter> are the string. They must
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satisfy the same constraints as described for the
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<literal>s</literal> type in
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<citerefentry><refentrytitle>sd_bus_message_append_basic</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para>
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<para>In case of
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<function>sd_bus_message_append_string_iovec</function>, the
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payload of <parameter>iov</parameter> is the string. It must
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satisfy the same constraints as described for the
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<literal>s</literal> type in
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<citerefentry><refentrytitle>sd_bus_message_append_basic</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para>
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<para>The <parameter>iov</parameter> argument must point to
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<parameter>n</parameter> <structname>struct iovec</structname>
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structures. Each structure may have the
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<structname>iov_base</structname> field set, in which case the
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memory pointed to will be copied into the message, or unset, in
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which case a block of spaces (ASCII 32) of length
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<structname>iov_len</structname> will be inserted. The
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memory pointed at by <parameter>iov</parameter> may be changed
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after this call.</para>
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<para>The
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<function>sd_bus_message_append_string_space</function> function appends
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space for a string to message <parameter>m</parameter>. It behaves
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similar to <function>sd_bus_message_append_basic</function> with
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type <literal>s</literal>, but instead of copying a string into
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the message, it returns a pointer to the destination area to
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the caller in pointer <parameter>p</parameter>. Space for the string
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of length <parameter>size</parameter> plus the terminating
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<constant>NUL</constant> is allocated.</para>
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</refsect1>
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<refsect1>
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<title>Return Value</title>
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<para>On success, those calls return 0 or a positive integer. On
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failure, they returns a negative errno-style error code.</para>
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</refsect1>
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<xi:include href="sd_bus_message_append_basic.xml" xpointer="errors" />
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<refsect1>
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<title>Notes</title>
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<para>The functions described here are available as a shared library,
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which can be compiled and linked to with the
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<constant>libsystemd</constant> <citerefentry project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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file.</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>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_message_append_basic</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html">The D-Bus specification</ulink>
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</para>
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</refsect1>
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</refentry>
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