<dl compact><dt><b>Parameters:</b></dt><dd>  <table border="0" cellspacing="2" cellpadding="0">    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>offset</em>&nbsp;</td><td>The offset on the device where to start reading. </td></tr>    <tr><td valign="top"><tt>[out]</tt>&nbsp;</td><td valign="top"><em>buffer</em>&nbsp;</td><td>The buffer into which to place the data. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>length</em>&nbsp;</td><td>The count of bytes to read. </td></tr>  </table></dl></div></div><p><a class="anchor" name="g3199d1b591458c7c6664545fab7d32fe"></a><!-- doxytag: member="partition.h::device_write_callback_t" ref="g3199d1b591458c7c6664545fab7d32fe" args=")(uint8_t *buffer, offset_t offset, void *p)" --><div class="memitem"><div class="memproto">      <table class="memname">        <tr>          <td class="memname">typedef uintptr_t(* <a class="el" href="group__partition.html#g3199d1b591458c7c6664545fab7d32fe">device_write_callback_t</a>)(uint8_t *buffer, offset_t offset, void *p)          </td>        </tr>      </table></div><div class="memdoc"><p>A function pointer passed to a <code>device_write_interval_t</code>. <p><dl compact><dt><b>Parameters:</b></dt><dd>  <table border="0" cellspacing="2" cellpadding="0">    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>buffer</em>&nbsp;</td><td>The buffer which receives the data to write. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>offset</em>&nbsp;</td><td>The offset to which the data in <code>buffer</code> will be written. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>p</em>&nbsp;</td><td>An opaque pointer. </td></tr>  </table></dl><dl class="return" compact><dt><b>Returns:</b></dt><dd>The number of bytes put into <code>buffer</code> </dd></dl><dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__partition.html#g032324dc0780bc62cd91a8856ffe0800" title="A function pointer used to continuously write a data stream obtained from a callback...">device_write_interval_t</a> </dd></dl></div></div><p><a class="anchor" name="g032324dc0780bc62cd91a8856ffe0800"></a><!-- doxytag: member="partition.h::device_write_interval_t" ref="g032324dc0780bc62cd91a8856ffe0800" args=")(offset_t offset, uint8_t *buffer, uintptr_t length, device_write_callback_t callback, void *p)" --><div class="memitem"><div class="memproto">      <table class="memname">        <tr>          <td class="memname">typedef uint8_t(* <a class="el" href="group__partition.html#g032324dc0780bc62cd91a8856ffe0800">device_write_interval_t</a>)(offset_t offset, uint8_t *buffer, uintptr_t length, <a class="el" href="group__partition.html#g3199d1b591458c7c6664545fab7d32fe">device_write_callback_t</a> callback, void *p)          </td>        </tr>      </table></div><div class="memdoc"><p>A function pointer used to continuously write a data stream obtained from a callback function. <p>This function starts writing at the specified offset. To obtain the next bytes to write, it calls the callback function. The callback fills the provided data buffer and returns the number of bytes it has put into the buffer.<p>By returning zero, the callback may stop writing.<p><dl compact><dt><b>Parameters:</b></dt><dd>  <table border="0" cellspacing="2" cellpadding="0">    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>offset</em>&nbsp;</td><td>Offset where to start writing. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>buffer</em>&nbsp;</td><td>Pointer to a buffer which is used for the callback function. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>length</em>&nbsp;</td><td>Number of bytes to write in total. May be zero for endless writes. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>callback</em>&nbsp;</td><td>The function used to obtain the bytes to write. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>p</em>&nbsp;</td><td>An opaque pointer directly passed to the callback function. </td></tr>  </table></dl><dl class="return" compact><dt><b>Returns:</b></dt><dd>0 on failure, 1 on success </dd></dl><dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__partition.html#g8d202a969ce237e5876b1f1f506df53f" title="A function pointer used to write to the partition.">device_write_t</a> </dd></dl></div></div><p><a class="anchor" name="g8d202a969ce237e5876b1f1f506df53f"></a><!-- doxytag: member="partition.h::device_write_t" ref="g8d202a969ce237e5876b1f1f506df53f" args=")(offset_t offset, const uint8_t *buffer, uintptr_t length)" --><div class="memitem"><div class="memproto">      <table class="memname">        <tr>          <td class="memname">typedef uint8_t(* <a class="el" href="group__partition.html#g8d202a969ce237e5876b1f1f506df53f">device_write_t</a>)(offset_t offset, const uint8_t *buffer, uintptr_t length)          </td>        </tr>      </table></div><div class="memdoc"><p>A function pointer used to write to the partition. <p><dl compact><dt><b>Parameters:</b></dt><dd>  <table border="0" cellspacing="2" cellpadding="0">    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>offset</em>&nbsp;</td><td>The offset on the device where to start writing. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>buffer</em>&nbsp;</td><td>The buffer which to write. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>length</em>&nbsp;</td><td>The count of bytes to write. </td></tr>  </table></dl></div></div><p><hr><h2>Function Documentation</h2><a class="anchor" name="g128f4363de35c81a9ff8026d4db289d2"></a><!-- doxytag: member="partition.c::partition_close" ref="g128f4363de35c81a9ff8026d4db289d2" args="(struct partition_struct *partition)" --><div class="memitem"><div class="memproto">      <table class="memname">        <tr>          <td class="memname">uint8_t partition_close           </td>          <td>(</td>          <td class="paramtype">struct <a class="el" href="structpartition__struct.html">partition_struct</a> *&nbsp;</td>          <td class="paramname"> <em>partition</em>          </td>          <td>&nbsp;)&nbsp;</td>          <td></td>        </tr>      </table></div><div class="memdoc"><p>Closes a partition. <p>This function destroys a partition descriptor which was previously obtained from a call to <a class="el" href="group__partition.html#g3125023db4e9d50adb8489c71fa1be68" title="Opens a partition.">partition_open()</a>. When this function returns, the given descriptor will be invalid.<p><dl compact><dt><b>Parameters:</b></dt><dd>  <table border="0" cellspacing="2" cellpadding="0">    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>partition</em>&nbsp;</td><td>The partition descriptor to destroy. </td></tr>  </table></dl><dl class="return" compact><dt><b>Returns:</b></dt><dd>0 on failure, 1 on success. </dd></dl><dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__partition.html#g3125023db4e9d50adb8489c71fa1be68" title="Opens a partition.">partition_open</a> </dd></dl></div></div><p><a class="anchor" name="g3125023db4e9d50adb8489c71fa1be68"></a><!-- doxytag: member="partition.c::partition_open" ref="g3125023db4e9d50adb8489c71fa1be68" args="(device_read_t device_read, device_read_interval_t device_read_interval, device_write_t device_write, device_write_interval_t device_write_interval, int8_t index)" --><div class="memitem"><div class="memproto">      <table class="memname">        <tr>          <td class="memname">struct <a class="el" href="structpartition__struct.html">partition_struct</a> * partition_open           </td>          <td>(</td>          <td class="paramtype"><a class="el" href="group__partition.html#g52bf225ef74664c7e596f23d8d807c85">device_read_t</a>&nbsp;</td>          <td class="paramname"> <em>device_read</em>, </td>        </tr>        <tr>          <td class="paramkey"></td>          <td></td>          <td class="paramtype"><a class="el" href="group__partition.html#ge89b7507ba9787aec1e8974c5f2b30a4">device_read_interval_t</a>&nbsp;</td>          <td class="paramname"> <em>device_read_interval</em>, </td>        </tr>        <tr>          <td class="paramkey"></td>          <td></td>          <td class="paramtype"><a class="el" href="group__partition.html#g8d202a969ce237e5876b1f1f506df53f">device_write_t</a>&nbsp;</td>          <td class="paramname"> <em>device_write</em>, </td>        </tr>        <tr>          <td class="paramkey"></td>          <td></td>          <td class="paramtype"><a class="el" href="group__partition.html#g032324dc0780bc62cd91a8856ffe0800">device_write_interval_t</a>&nbsp;</td>          <td class="paramname"> <em>device_write_interval</em>, </td>        </tr>        <tr>          <td class="paramkey"></td>          <td></td>          <td class="paramtype">int8_t&nbsp;</td>          <td class="paramname"> <em>index</em></td><td>&nbsp;</td>        </tr>        <tr>          <td></td>          <td>)</td>          <td></td><td></td><td><code> [read]</code></td>        </tr>      </table></div><div class="memdoc"><p>Opens a partition. <p>Opens a partition by its index number and returns a partition handle which describes the opened partition.<p><dl class="note" compact><dt><b>Note:</b></dt><dd>This function does not support extended partitions.</dd></dl><dl compact><dt><b>Parameters:</b></dt><dd>  <table border="0" cellspacing="2" cellpadding="0">    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>device_read</em>&nbsp;</td><td>A function pointer which is used to read from the disk. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>device_read_interval</em>&nbsp;</td><td>A function pointer which is used to read in constant intervals from the disk. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>device_write</em>&nbsp;</td><td>A function pointer which is used to write to the disk. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>device_write_interval</em>&nbsp;</td><td>A function pointer which is used to write a data stream to disk. </td></tr>    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>index</em>&nbsp;</td><td>The index of the partition which should be opened, range 0 to 3. A negative value is allowed as well. In this case, the partition opened is not checked for existance, begins at offset zero, has a length of zero and is of an unknown type. Use this in case you want to open the whole device as a single partition (e.g. for "super floppy" use). </td></tr>  </table></dl><dl class="return" compact><dt><b>Returns:</b></dt><dd>0 on failure, a partition descriptor on success. </dd></dl><dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__partition.html#g128f4363de35c81a9ff8026d4db289d2" title="Closes a partition.">partition_close</a> </dd></dl></div></div><p></div><hr size="1"><address style="text-align: right;"><small>Generated on Fri Nov 21 09:17:15 2008 for sd-reader by&nbsp;<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address></body></html>