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zip_file_get_external_attributes.mdoc -- get external attributes for file in zip
Copyright (C) 2013-2017 Dieter Baron and Thomas Klausner
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<title>ZIP_FILE_GET_EXTERNAL_ATTRIBUTES(3)</title>
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<table class="head">
<tr>
<td class="head-ltitle">ZIP_FILE_GET_EXTERNAL_ATTRIBUTES(3)</td>
<td class="head-vol">Library Functions Manual</td>
<td class="head-rtitle">ZIP_FILE_GET_EXTERNAL_ATTRIBUTES(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_get_external_attributes</code> &#x2014;
<div class="Nd">get external attributes 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 &lt;<a class="In">zip.h</a>&gt;</code>
<p class="Pp"><var class="Ft">int</var>
<br/>
<code class="Fn">zip_file_get_external_attributes</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_flags_t
flags</var>, <var class="Fa" style="white-space: nowrap;">zip_uint8_t
*opsys</var>, <var class="Fa" style="white-space: nowrap;">zip_uint32_t
*attributes</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_get_external_attributes</code>() function returns
the operating system and external attributes for the file at position
<var class="Ar">index</var> in the zip archive. The external attributes
usually contain the operating system-specific file permissions. If
<var class="Ar">flags</var> is set to
<code class="Dv">ZIP_FL_UNCHANGED</code>, the original unchanged values are
returned. If <var class="Ar">opsys</var> or <var class="Ar">attributes</var>
are <code class="Dv">NULL</code>, they are not filled in.
<p class="Pp">The following operating systems are defined by the zip
specification:</p>
<ul class="Bl-item Bd-indent Bl-compact">
<li><a class="permalink" href="#ZIP_OPSYS_ACORN_RISC"><code class="Dv" id="ZIP_OPSYS_ACORN_RISC">ZIP_OPSYS_ACORN_RISC</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_ALTERNATE_MVS"><code class="Dv" id="ZIP_OPSYS_ALTERNATE_MVS">ZIP_OPSYS_ALTERNATE_MVS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_AMIGA"><code class="Dv" id="ZIP_OPSYS_AMIGA">ZIP_OPSYS_AMIGA</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_ATARI_ST"><code class="Dv" id="ZIP_OPSYS_ATARI_ST">ZIP_OPSYS_ATARI_ST</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_BEOS"><code class="Dv" id="ZIP_OPSYS_BEOS">ZIP_OPSYS_BEOS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_CPM"><code class="Dv" id="ZIP_OPSYS_CPM">ZIP_OPSYS_CPM</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_DOS"><code class="Dv" id="ZIP_OPSYS_DOS">ZIP_OPSYS_DOS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_MACINTOSH"><code class="Dv" id="ZIP_OPSYS_MACINTOSH">ZIP_OPSYS_MACINTOSH</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_MVS"><code class="Dv" id="ZIP_OPSYS_MVS">ZIP_OPSYS_MVS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_OPENVMS"><code class="Dv" id="ZIP_OPSYS_OPENVMS">ZIP_OPSYS_OPENVMS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_OS_2"><code class="Dv" id="ZIP_OPSYS_OS_2">ZIP_OPSYS_OS_2</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_OS_400"><code class="Dv" id="ZIP_OPSYS_OS_400">ZIP_OPSYS_OS_400</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_OS_X"><code class="Dv" id="ZIP_OPSYS_OS_X">ZIP_OPSYS_OS_X</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_TANDEM"><code class="Dv" id="ZIP_OPSYS_TANDEM">ZIP_OPSYS_TANDEM</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_UNIX"><code class="Dv" id="ZIP_OPSYS_UNIX">ZIP_OPSYS_UNIX</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_VFAT"><code class="Dv" id="ZIP_OPSYS_VFAT">ZIP_OPSYS_VFAT</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_VM_CMS"><code class="Dv" id="ZIP_OPSYS_VM_CMS">ZIP_OPSYS_VM_CMS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_VSE"><code class="Dv" id="ZIP_OPSYS_VSE">ZIP_OPSYS_VSE</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_WINDOWS_NTFS"><code class="Dv" id="ZIP_OPSYS_WINDOWS_NTFS">ZIP_OPSYS_WINDOWS_NTFS</code></a>
(uncommon, use <code class="Dv">ZIP_OPSYS_DOS</code> instead)</li>
<li><a class="permalink" href="#ZIP_OPSYS_Z_SYSTEM"><code class="Dv" id="ZIP_OPSYS_Z_SYSTEM">ZIP_OPSYS_Z_SYSTEM</code></a></li>
</ul>
<p class="Pp">The defines above follow the PKWARE Inc. Appnote; please note that
the InfoZIP Appnote has a slightly different mapping.</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. In case of an error,
<code class="Dv">-1</code> 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="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
The following code can be used to expand <var class="Ar">attributes</var> if the
operating system is <code class="Dv">ZIP_OPSYS_DOS</code>.
<div class="Bd Pp">
<pre>
#include &lt;sys/stat.h&gt;
#define FA_RDONLY 0x01 // FILE_ATTRIBUTE_READONLY
#define FA_DIREC 0x10 // FILE_ATTRIBUTE_DIRECTORY
static mode_t
_zip_dos_attr2mode(zip_uint32_t attr)
{
mode_t m = S_IRUSR | S_IRGRP | S_IROTH;
if (0 == (attr &amp; FA_RDONLY))
m |= S_IWUSR | S_IWGRP | S_IWOTH;
if (attr &amp; FA_DIREC)
m = (S_IFDIR | (m &amp; ~S_IFMT)) | S_IXUSR | S_IXGRP | S_IXOTH;
return m;
}
</pre>
</div>
</section>
<section class="Sh">
<h1 class="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1>
<code class="Fn">zip_file_get_external_attributes</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><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_set_external_attributes.html">zip_file_set_external_attributes(3)</a>
</section>
<section class="Sh">
<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<code class="Fn">zip_file_get_external_attributes</code>() was added in libzip
0.11.2.
</section>
<section class="Sh">
<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<span class="An">Dieter Baron</span>
&lt;<a class="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>&gt; and
<span class="An">Thomas Klausner</span>
&lt;<a class="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>&gt;
</section>
</div>
<table class="foot">
<tr>
<td class="foot-date">December 18, 2017</td>
<td class="foot-os">NetBSD 9.99.41</td>
</tr>
</table>
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