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libapr-devel-1.4.6-0.1mdv2010.2.i586.rpm

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<title>Apache Portable Runtime: File Seek Flags</title>
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<h1>File Seek Flags<br/>
<small>
[<a class="el" href="group__apr__file__io.html">File I/O Handling Functions</a>]</small>
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<tr><td colspan="2"><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__file__seek__flags.html#ga2fdf78845c897f69451d49e1e2b90ac9">APR_SET</a>&nbsp;&nbsp;&nbsp;SEEK_SET</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__file__seek__flags.html#gae17abc53fea00bfd51e184017113e250">APR_CUR</a>&nbsp;&nbsp;&nbsp;SEEK_CUR</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__file__seek__flags.html#ga438f3568be799d1e4bbd19492ca47d22">APR_END</a>&nbsp;&nbsp;&nbsp;SEEK_END</td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<dl class="warning"><dt><b>Warning:</b></dt><dd>APR_FOPEN_LARGEFILE flag only has effect on some platforms where sizeof(apr_off_t) == 4. Where implemented, it allows opening and writing to a file which exceeds the size which can be represented by apr_off_t (2 gigabytes). When a file's size does exceed 2Gb, <a class="el" href="group__apr__file__io.html#ga39be7fe05d0dda4a28f4358b61a44ac8">apr_file_info_get()</a> will fail with an error on the descriptor, likewise <a class="el" href="group__apr__file__stat.html#gafb0f4a4fa4545c155e20ddd8f2001c1a">apr_stat()</a>/apr_lstat() will fail on the filename. <a class="el" href="group__apr__dir.html#ga3e4ee253e0c712160bee10bfb9c8e4a8">apr_dir_read()</a> will fail with APR_INCOMPLETE on a directory entry for a large file depending on the particular APR_FINFO_* flags. Generally, it is not recommended to use this flag.</dd>
<dd>
APR_FOPEN_SPARSE may, depending on platform, convert a normal file to a sparse file. Some applications may be unable to decipher a sparse file, so it's critical that the sparse file flag should only be used for files accessed only by APR or other applications known to be able to decipher them. APR does not guarantee that it will compress the file into sparse segments if it was previously created and written without the sparse flag. On platforms which do not understand, or on file systems which cannot handle sparse files, the flag is ignored by <a class="el" href="group__apr__file__io.html#gabda14cbf242fb4fe99055434213e5446">apr_file_open()</a>. </dd></dl>
<hr/><h2>Define Documentation</h2>
<a class="anchor" id="gae17abc53fea00bfd51e184017113e250"></a><!-- doxytag: member="apr_file_io.h::APR_CUR" ref="gae17abc53fea00bfd51e184017113e250" args="" -->
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          <td class="memname">#define APR_CUR&nbsp;&nbsp;&nbsp;SEEK_CUR</td>
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<p>Current </p>

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<a class="anchor" id="ga438f3568be799d1e4bbd19492ca47d22"></a><!-- doxytag: member="apr_file_io.h::APR_END" ref="ga438f3568be799d1e4bbd19492ca47d22" args="" -->
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          <td class="memname">#define APR_END&nbsp;&nbsp;&nbsp;SEEK_END</td>
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<p>Go to end of file </p>

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<a class="anchor" id="ga2fdf78845c897f69451d49e1e2b90ac9"></a><!-- doxytag: member="apr_file_io.h::APR_SET" ref="ga2fdf78845c897f69451d49e1e2b90ac9" args="" -->
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          <td class="memname">#define APR_SET&nbsp;&nbsp;&nbsp;SEEK_SET</td>
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<p>Set the file position </p>

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