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zip_file_extra_field_set.html
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<!DOCTYPE html>
<html>
<!-- This is an automatically generated file. Do not edit.
zip_file_extra_field_set.mdoc -- set extra field for file in zip
Copyright (C) 2012-2017 Dieter Baron and Thomas Klausner
This file is part of libzip, a library to manipulate ZIP files.
The authors can be contacted at <libzip@nih.at>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
3. The names of the authors may not be used to endorse or promote
products derived from this software without specific prior
written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-->
<head>
<meta charset="utf-8"/>
<link rel="stylesheet" href="../nih-man.css" type="text/css" media="all"/>
<title>ZIP_FILE_EXTRA_FIELD_SET(3)</title>
</head>
<body>
<table class="head">
<tr>
<td class="head-ltitle">ZIP_FILE_EXTRA_FIELD_SET(3)</td>
<td class="head-vol">Library Functions Manual</td>
<td class="head-rtitle">ZIP_FILE_EXTRA_FIELD_SET(3)</td>
</tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<code class="Nm">zip_file_extra_field_set</code> —
<div class="Nd">set extra field for file in zip</div>
</section>
<section class="Sh">
<h1 class="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1>
libzip (-lzip)
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<code class="In">#include <<a class="In">zip.h</a>></code>
<p class="Pp"><var class="Ft">int</var>
<br/>
<code class="Fn">zip_file_extra_field_set</code>(<var class="Fa" style="white-space: nowrap;">zip_t
*archive</var>, <var class="Fa" style="white-space: nowrap;">zip_uint64_t
index</var>, <var class="Fa" style="white-space: nowrap;">zip_uint16_t
extra_field_id</var>,
<var class="Fa" style="white-space: nowrap;">zip_uint16_t
extra_field_index</var>, <var class="Fa" style="white-space: nowrap;">const
zip_uint8_t *extra_field_data</var>,
<var class="Fa" style="white-space: nowrap;">zip_uint16_t len</var>,
<var class="Fa" style="white-space: nowrap;">zip_flags_t flags</var>);</p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
The <code class="Fn">zip_file_extra_field_set</code>() function sets the extra
field with ID (two-byte signature) <var class="Ar">extra_field_id</var> and
index <var class="Ar">extra_field_index</var> for the file at position
<var class="Ar">index</var> in the zip archive. The extra field's data will be
set to <var class="Ar">extra_field_data</var> and length
<var class="Ar">len</var>. If a new entry shall be appended, set
<var class="Ar">extra_field_index</var> to
<code class="Dv">ZIP_EXTRA_FIELD_NEW</code>.
<p class="Pp">At least one of the following <var class="Ar">flags</var> must be
set:</p>
<div class="Bd-indent">
<dl class="Bl-tag">
<dt><a class="permalink" href="#ZIP_FL_CENTRAL"><code class="Dv" id="ZIP_FL_CENTRAL">ZIP_FL_CENTRAL</code></a></dt>
<dd>Set extra field in the archive's central directory.</dd>
<dt><a class="permalink" href="#ZIP_FL_LOCAL"><code class="Dv" id="ZIP_FL_LOCAL">ZIP_FL_LOCAL</code></a></dt>
<dd>Set extra field in the local file headers.</dd>
</dl>
</div>
<p class="Pp">Please note that the extra field IDs 0x0001 (ZIP64 extension),
0x6375 (Infozip UTF-8 comment), and 0x7075 (Infozip UTF-8 file name) can not
be set using <code class="Fn">zip_file_extra_field_set</code>() since they
are set by <a class="Xr" href="libzip.html">libzip(3)</a> automatically when
needed.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
VALUES</a></h1>
Upon successful completion 0 is returned. Otherwise, -1 is returned and the
error code in <var class="Ar">archive</var> is set to indicate the error.
</section>
<section class="Sh">
<h1 class="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1>
<code class="Fn">zip_file_extra_field_set</code>() fails if:
<dl class="Bl-tag">
<dt>[<a class="permalink" href="#ZIP_ER_INVAL"><code class="Er" id="ZIP_ER_INVAL">ZIP_ER_INVAL</code></a>]</dt>
<dd>The extra field size is too large (ID and length need 4 bytes; the maximum
length of all extra fields for one file combined is 65536 bytes). This
error also occurs if <var class="Ar">extra_field_index</var> is too
large.</dd>
<dt>[<a class="permalink" href="#ZIP_ER_MEMORY"><code class="Er" id="ZIP_ER_MEMORY">ZIP_ER_MEMORY</code></a>]</dt>
<dd>Required memory could not be allocated.</dd>
<dt>[<a class="permalink" href="#ZIP_ER_NOENT"><code class="Er" id="ZIP_ER_NOENT">ZIP_ER_NOENT</code></a>]</dt>
<dd><var class="Ar">index</var> is not a valid file index in
<var class="Ar">archive</var>.</dd>
</dl>
</section>
<section class="Sh">
<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
ALSO</a></h1>
<a class="Xr" href="libzip.html">libzip(3)</a>,
<a class="Xr" href="zip_file_extra_field_delete.html">zip_file_extra_field_delete(3)</a>,
<a class="Xr" href="zip_file_extra_field_get.html">zip_file_extra_field_get(3)</a>,
<a class="Xr" href="zip_file_extra_fields_count.html">zip_file_extra_fields_count(3)</a>
</section>
<section class="Sh">
<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<code class="Fn">zip_file_extra_field_set</code>() was added in libzip 0.11.
</section>
<section class="Sh">
<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<span class="An">Dieter Baron</span>
<<a class="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>> and
<span class="An">Thomas Klausner</span>
<<a class="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>>
</section>
</div>
<table class="foot">
<tr>
<td class="foot-date">December 18, 2017</td>
<td class="foot-os">NetBSD 8.99.35</td>
</tr>
</table>
</body>
</html>