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<a href="#pub-attribs">Data Fields</a> </div>
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<div class="title">H5FD_onion_fapl_info_t Struct Reference</div> </div>
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<p><code>#include <src/H5FDonion.h></code></p>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Stores fapl information for creating onion VFD files. </p>
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr class="memitem:ab22abc2906422da61885ac6c8e6a1a59"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_h5_f_d__onion__fapl__info__t.html#ab22abc2906422da61885ac6c8e6a1a59">version</a></td></tr>
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<tr class="memitem:a6c910e4bf330a40b7ccd18af4b548f66"><td class="memItemLeft" align="right" valign="top"><a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_h5_f_d__onion__fapl__info__t.html#a6c910e4bf330a40b7ccd18af4b548f66">backing_fapl_id</a></td></tr>
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<tr class="memitem:a9dd3e47e968a8f6beb5d88c6d1b7ebe9"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_h5_f_d__onion__fapl__info__t.html#a9dd3e47e968a8f6beb5d88c6d1b7ebe9">page_size</a></td></tr>
<tr class="separator:a9dd3e47e968a8f6beb5d88c6d1b7ebe9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a731ce24bd0a21911af9c49398980ba07"><td class="memItemLeft" align="right" valign="top"><a class="el" href="_h5_f_donion_8h.html#abbf57ea23523a7fceff6f1212bd68a6f">H5FD_onion_target_file_constant_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_h5_f_d__onion__fapl__info__t.html#a731ce24bd0a21911af9c49398980ba07">store_target</a></td></tr>
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<tr class="memitem:a71d7e6f4be381f6746d947c73ec4abd2"><td class="memItemLeft" align="right" valign="top">uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_h5_f_d__onion__fapl__info__t.html#a71d7e6f4be381f6746d947c73ec4abd2">revision_num</a></td></tr>
<tr class="separator:a71d7e6f4be381f6746d947c73ec4abd2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a96025539df791d4ac3e79fc618be2121"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_h5_f_d__onion__fapl__info__t.html#a96025539df791d4ac3e79fc618be2121">force_write_open</a></td></tr>
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<tr class="memitem:a2c1423b2f9d50a462269f1314f64d88c"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_h5_f_d__onion__fapl__info__t.html#a2c1423b2f9d50a462269f1314f64d88c">creation_flags</a></td></tr>
<tr class="separator:a2c1423b2f9d50a462269f1314f64d88c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab302133cac1883ca6e8b4240e0a49889"><td class="memItemLeft" align="right" valign="top">char </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_h5_f_d__onion__fapl__info__t.html#ab302133cac1883ca6e8b4240e0a49889">comment</a> [255+1]</td></tr>
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</table>
<h2 class="groupheader">Field Documentation</h2>
<a id="a6c910e4bf330a40b7ccd18af4b548f66"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6c910e4bf330a40b7ccd18af4b548f66">◆ </a></span>backing_fapl_id</h2>
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<td class="memname"><a class="el" href="_h5_ipublic_8h.html#a0045db7ff9c22ad35db6ae91662e1943">hid_t</a> backing_fapl_id</td>
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<p>Backing or 'child' FAPL ID to handle I/O with the underlying backing store. It must use the same backing driver as the original file. </p>
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<a id="ab302133cac1883ca6e8b4240e0a49889"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab302133cac1883ca6e8b4240e0a49889">◆ </a></span>comment</h2>
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<td class="memname">char comment[255+ 1]</td>
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<p>User-supplied NULL-terminated comment for a revision to be written. Cannot be longer than H5FD_ONION_FAPL_COMMENT_MAX_LEN. Ignored if part of a FAPL used to open in read mode. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2c1423b2f9d50a462269f1314f64d88c">◆ </a></span>creation_flags</h2>
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<td class="memname">uint8_t creation_flags</td>
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<p>Flag used only when instantiating an onion file. If the relevant bit is set to a nonzero value, its feature will be enabled. </p>
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<a id="a96025539df791d4ac3e79fc618be2121"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a96025539df791d4ac3e79fc618be2121">◆ </a></span>force_write_open</h2>
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<td class="memname">uint8_t force_write_open</td>
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<p>Flag to ignore the write-lock flag in the onion data and attempt to open the file write-only anyway. This may be relevant if, for example, the library crashed while the file was open in write mode and the write-lock flag was not cleared. Must equal H5FD_ONION_FAPL_FLAG_FORCE_OPEN to enable. </p>
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<a id="a9dd3e47e968a8f6beb5d88c6d1b7ebe9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9dd3e47e968a8f6beb5d88c6d1b7ebe9">◆ </a></span>page_size</h2>
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<td class="memname">uint32_t page_size</td>
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<p>page_size: Size of the amended data pages. If opening an existing file, must equal the existing page size or zero. If creating a new file or an initial revision of an existing file, must be a power of 2. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a71d7e6f4be381f6746d947c73ec4abd2">◆ </a></span>revision_num</h2>
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<td class="memname">uint64_t revision_num</td>
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<p>Which revision to open. Valid values are 0 (the original file) or the revision number of an existing revision. H5FD_ONION_FAPL_INFO_REVISION_ID_LATEST refers to the most recently-created revision in the history. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a731ce24bd0a21911af9c49398980ba07">◆ </a></span>store_target</h2>
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<td class="memname"><a class="el" href="_h5_f_donion_8h.html#abbf57ea23523a7fceff6f1212bd68a6f">H5FD_onion_target_file_constant_t</a> store_target</td>
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<p>Identifies where the history data is stored. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab22abc2906422da61885ac6c8e6a1a59">◆ </a></span>version</h2>
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<td class="memname">uint8_t version</td>
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<p>Future-proofing identifier. Informs struct membership. Must equal H5FD_ONION_FAPL_VERSION_CURR to be considered valid. </p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>src/<a class="el" href="_h5_f_donion_8h.html">H5FDonion.h</a></li>
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