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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">
<h1 class="Sh" title="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<code class="Nm" title="Nm">zip_file_get_external_attributes</code> &#x2014;
<div class="Nd" title="Nd">get external attributes for file in zip</div>
<h1 class="Sh" title="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1>
libzip (-lzip)
<h1 class="Sh" title="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<code class="In" title="In">#include
&lt;<a class="In" title="In">zip.h</a>&gt;</code>
<div class="Pp"></div>
<var class="Ft" title="Ft">int</var>
<br/>
<code class="Fn" title="Fn">zip_file_get_external_attributes</code>(<var class="Fa" title="Fa" style="white-space: nowrap;">zip_t
*archive</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_uint64_t
index</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_flags_t
flags</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_uint8_t
*opsys</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_uint32_t
*attributes</var>);
<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
The <code class="Fn" title="Fn">zip_file_get_external_attributes</code>()
function returns the operating system and external attributes for the file at
position <var class="Ar" title="Ar">index</var> in the zip archive. The
external attributes usually contain the operating system-specific file
permissions. If <var class="Ar" title="Ar">flags</var> is set to
<code class="Dv" title="Dv">ZIP_FL_UNCHANGED</code>, the original unchanged
values are returned. If <var class="Ar" title="Ar">opsys</var> or
<var class="Ar" title="Ar">attributes</var> are
<code class="Dv" title="Dv">NULL</code>, they are not filled in.
<div class="Pp"></div>
The following operating systems are defined by the zip specification:
<ul class="Bl-item Bl-compact" style="margin-left: 6.00ex;">
<li><a class="permalink" href="#ZIP_OPSYS_ACORN_RISC"><code class="Dv" title="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" title="Dv" id="ZIP_OPSYS_ALTERNATE_MVS">ZIP_OPSYS_ALTERNATE_MVS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_AMIGA"><code class="Dv" title="Dv" id="ZIP_OPSYS_AMIGA">ZIP_OPSYS_AMIGA</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_ATARI_ST"><code class="Dv" title="Dv" id="ZIP_OPSYS_ATARI_ST">ZIP_OPSYS_ATARI_ST</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_BEOS"><code class="Dv" title="Dv" id="ZIP_OPSYS_BEOS">ZIP_OPSYS_BEOS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_CPM"><code class="Dv" title="Dv" id="ZIP_OPSYS_CPM">ZIP_OPSYS_CPM</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_DOS"><code class="Dv" title="Dv" id="ZIP_OPSYS_DOS">ZIP_OPSYS_DOS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_MACINTOSH"><code class="Dv" title="Dv" id="ZIP_OPSYS_MACINTOSH">ZIP_OPSYS_MACINTOSH</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_MVS"><code class="Dv" title="Dv" id="ZIP_OPSYS_MVS">ZIP_OPSYS_MVS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_OPENVMS"><code class="Dv" title="Dv" id="ZIP_OPSYS_OPENVMS">ZIP_OPSYS_OPENVMS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_OS_2"><code class="Dv" title="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" title="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" title="Dv" id="ZIP_OPSYS_OS_X">ZIP_OPSYS_OS_X</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_TANDEM"><code class="Dv" title="Dv" id="ZIP_OPSYS_TANDEM">ZIP_OPSYS_TANDEM</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_UNIX"><code class="Dv" title="Dv" id="ZIP_OPSYS_UNIX">ZIP_OPSYS_UNIX</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_VFAT"><code class="Dv" title="Dv" id="ZIP_OPSYS_VFAT">ZIP_OPSYS_VFAT</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_VM_CMS"><code class="Dv" title="Dv" id="ZIP_OPSYS_VM_CMS">ZIP_OPSYS_VM_CMS</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_VSE"><code class="Dv" title="Dv" id="ZIP_OPSYS_VSE">ZIP_OPSYS_VSE</code></a></li>
<li><a class="permalink" href="#ZIP_OPSYS_WINDOWS_NTFS"><code class="Dv" title="Dv" id="ZIP_OPSYS_WINDOWS_NTFS">ZIP_OPSYS_WINDOWS_NTFS</code></a>
(uncommon, use <code class="Dv" title="Dv">ZIP_OPSYS_DOS</code>
instead)</li>
<li><a class="permalink" href="#ZIP_OPSYS_Z_SYSTEM"><code class="Dv" title="Dv" id="ZIP_OPSYS_Z_SYSTEM">ZIP_OPSYS_Z_SYSTEM</code></a></li>
</ul>
<div class="Pp"></div>
The defines above follow the PKWARE Inc. Appnote; please note that the InfoZIP
Appnote has a slightly different mapping.
<h1 class="Sh" title="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" title="Dv">-1</code> is returned and the error code in
<var class="Ar" title="Ar">archive</var> is set to indicate the error.
<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
The following code can be used to expand
<var class="Ar" title="Ar">attributes</var> if the operating system is
<code class="Dv" title="Dv">ZIP_OPSYS_DOS</code>.
<div class="Pp"></div>
<div class="Bd" style="margin-left: 0.00ex;">
<pre class="Li">
#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>
<h1 class="Sh" title="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1>
<code class="Fn" title="Fn">zip_file_get_external_attributes</code>() fails if:
<dl class="Bl-tag" style="margin-left: 23.40ex;">
<dt style="margin-left: -23.40ex;">&#x00A0;</dt>
<dd>&#x00A0;</dd>
<dt style="margin-left: -23.40ex;">[<a class="permalink" href="#ZIP_ER_INVAL"><code class="Er" title="Er" id="ZIP_ER_INVAL">ZIP_ER_INVAL</code></a>]</dt>
<dd><var class="Ar" title="Ar">index</var> is not a valid file index in
<var class="Ar" title="Ar">archive</var>.</dd>
</dl>
<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
ALSO</a></h1>
<a class="Xr" title="Xr" href="libzip.html">libzip(3)</a>,
<a class="Xr" title="Xr" href="zip_file_set_external_attributes.html">zip_file_set_external_attributes(3)</a>
<h1 class="Sh" title="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<code class="Fn" title="Fn">zip_file_get_external_attributes</code>() was added
in libzip 0.11.2.
<h1 class="Sh" title="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<span class="An" title="An">Dieter Baron</span>
&lt;<a class="Mt" title="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>&gt;
and <span class="An" title="An">Thomas Klausner</span>
&lt;<a class="Mt" title="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>&gt;</div>
<table class="foot">
<tr>
<td class="foot-date">December 18, 2017</td>
<td class="foot-os">NetBSD 8.99.16</td>
</tr>
</table>
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