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5aded36978
It is annoying when we have dead links on fd.o. Add project='man-pages|die-net|archlinux' to <citerefentry>-ies. In generated html, add external links to http://man7.org/linux/man-pages/man, http://linux.die.net/man/, https://www.archlinux.org/. By default, pages in sections 2 and 4 go to man7, since Michael Kerrisk is the autorative source on kernel related stuff. The rest of links goes to linux.die.net, because they have the manpages. Except for the pacman stuff, since it seems to be only available from archlinux.org. Poor gummiboot gets no link, because gummitboot(8) ain't to be found on the net. According to common wisdom, that would mean that it does not exist. But I have seen Kay using it, so I know it does, and deserves to be found. Can somebody be nice and put it up somewhere?
154 lines
5.9 KiB
XML
154 lines
5.9 KiB
XML
<?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="sd_bus_message_append_string_memfd" conditional="ENABLE_KDBUS"
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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>sd_memfd *<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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