<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>UbixOS V2: src/sys/ubixfsv2/ramdrive.cpp Source File</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
<link href="tabs.css" rel="stylesheet" type="text/css">
</head><body>
<!-- Generated by Doxygen 1.4.7 -->
<div class="tabs">
<ul>
<li><a href="main.html"><span>Main Page</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li><a href="classes.html"><span>Data Structures</span></a></li>
<li id="current"><a href="files.html"><span>Files</span></a></li>
<li><a href="dirs.html"><span>Directories</span></a></li>
<li>
<form action="search.php" method="get">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td><label> <u>S</u>earch for </label></td>
<td><input type="text" name="query" value="" size="20" accesskey="s"/></td>
</tr>
</table>
</form>
</li>
</ul></div>
<div class="tabs">
<ul>
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>Globals</span></a></li>
</ul></div>
<div class="nav">
<a class="el" href="dir_897b6a2d7bab147dd1db58381aad3984.html">src</a> » <a class="el" href="dir_832905b1f7f5feaf61a306b40c0ac817.html">sys</a> » <a class="el" href="dir_21e0927e9dd41d8ff1206ca4f0555726.html">ubixfsv2</a></div>
<h1>ramdrive.cpp</h1><a href="ramdrive_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*****************************************************************************************</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (c) 2002-2004 The UbixOS Project</span>
<a name="l00003"></a>00003 <span class="comment"> All rights reserved.</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment"> Redistribution and use in source and binary forms, with or without modification, are</span>
<a name="l00006"></a>00006 <span class="comment"> permitted provided that the following conditions are met:</span>
<a name="l00007"></a>00007 <span class="comment"></span>
<a name="l00008"></a>00008 <span class="comment"> Redistributions of source code must retain the above copyright notice, this list of</span>
<a name="l00009"></a>00009 <span class="comment"> conditions, the following disclaimer and the list of authors. Redistributions in binary</span>
<a name="l00010"></a>00010 <span class="comment"> form must reproduce the above copyright notice, this list of conditions, the following</span>
<a name="l00011"></a>00011 <span class="comment"> disclaimer and the list of authors in the documentation and/or other materials provided</span>
<a name="l00012"></a>00012 <span class="comment"> with the distribution. Neither the name of the UbixOS Project nor the names of its</span>
<a name="l00013"></a>00013 <span class="comment"> contributors may be used to endorse or promote products derived from this software</span>
<a name="l00014"></a>00014 <span class="comment"> without specific prior written permission.</span>
<a name="l00015"></a>00015 <span class="comment"></span>
<a name="l00016"></a>00016 <span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY</span>
<a name="l00017"></a>00017 <span class="comment"> EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span>
<a name="l00018"></a>00018 <span class="comment"> MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL</span>
<a name="l00019"></a>00019 <span class="comment"> THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<a name="l00020"></a>00020 <span class="comment"> SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span>
<a name="l00021"></a>00021 <span class="comment"> OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)</span>
<a name="l00022"></a>00022 <span class="comment"> HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR</span>
<a name="l00023"></a>00023 <span class="comment"> TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS</span>
<a name="l00024"></a>00024 <span class="comment"> SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00025"></a>00025 <span class="comment"></span>
<a name="l00026"></a>00026 <span class="comment"> $Id: ramdrive_8cpp-source.html 88 2016-01-12 00:11:29Z reddawg $</span>
<a name="l00027"></a>00027 <span class="comment"></span>
<a name="l00028"></a>00028 <span class="comment">*****************************************************************************************/</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <stdio.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <<a class="code" href="string_8h.html">string.h</a>></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <<a class="code" href="assert_8h.html">assert.h</a>></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="ubixfsv2_2device_8h.html">device.h</a>"</span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036
<a name="l00037"></a><a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">00037</a> <span class="keyword">static</span> <span class="keywordtype">char</span> *<a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">ram_data</a> = 0x0;
<a name="l00038"></a>00038
<a name="l00039"></a><a class="code" href="ramdrive_8cpp.html#fa106ea6087f9f8423b6ecc98dda7741">00039</a> <span class="preprocessor">#define RAM_DRIVE_SIZE 1024*1024*100</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span>
<a name="l00041"></a>00041 <span class="keyword">static</span>
<a name="l00042"></a>00042 <span class="keywordtype">int</span>
<a name="l00043"></a><a class="code" href="ramdrive_8cpp.html#38167738dfd96ad366c00f66c6ad30e0">00043</a> <a class="code" href="ramdrive_8cpp.html#38167738dfd96ad366c00f66c6ad30e0">ramDrive_read</a>(<a class="code" href="structdevice__t.html">device_t</a> *<a class="code" href="ethernetif_8c.html#cf6a82c73e7a9d99293d9ce0b8837faf">dev</a>,<span class="keywordtype">void</span> *ptr,<a class="code" href="include_2ubixos_2types_8h.html#fa178be408981cc5edd64227b6332fc6">off_t</a> offset,<a class="code" href="include_2ubixos_2types_8h.html#7619b847aeded8a6d14cbfa212b2cdfb">size_t</a> length) {
<a name="l00044"></a>00044 <span class="keywordtype">char</span> *data = <a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">ram_data</a> + (offset*512);
<a name="l00045"></a>00045 <a class="code" href="assert_8h.html#d6d5aaa966ca7424f7cb9bd01f2c838b">assert</a>(<a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">ram_data</a>);
<a name="l00046"></a>00046 <a class="code" href="assert_8h.html#d6d5aaa966ca7424f7cb9bd01f2c838b">assert</a>(offset+length <= dev->sectors);
<a name="l00047"></a>00047 <a class="code" href="lib_2string_8h.html#e33b18edb618c656b9b795b9fce2316c">memcpy</a>(ptr, data, length * 512);
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keywordflow">return</span>(length);
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keyword">static</span>
<a name="l00053"></a>00053 <span class="keywordtype">int</span>
<a name="l00054"></a><a class="code" href="ramdrive_8cpp.html#79604a2fffa2b0d95884fec8c65a0051">00054</a> <a class="code" href="ramdrive_8cpp.html#79604a2fffa2b0d95884fec8c65a0051">ramDrive_write</a>(<a class="code" href="structdevice__t.html">device_t</a> *<a class="code" href="ethernetif_8c.html#cf6a82c73e7a9d99293d9ce0b8837faf">dev</a>,<span class="keywordtype">void</span> *ptr,<a class="code" href="include_2ubixos_2types_8h.html#fa178be408981cc5edd64227b6332fc6">off_t</a> offset,<a class="code" href="include_2ubixos_2types_8h.html#7619b847aeded8a6d14cbfa212b2cdfb">size_t</a> length) {
<a name="l00055"></a>00055 <span class="keywordtype">char</span> *data = <a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">ram_data</a> + (offset*512);
<a name="l00056"></a>00056 <a class="code" href="assert_8h.html#d6d5aaa966ca7424f7cb9bd01f2c838b">assert</a>(<a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">ram_data</a>);
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <a class="code" href="assert_8h.html#d6d5aaa966ca7424f7cb9bd01f2c838b">assert</a>(offset+length <= dev->sectors);
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <a class="code" href="lib_2string_8h.html#e33b18edb618c656b9b795b9fce2316c">memcpy</a>(data, ptr, length * 512);
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="keywordflow">return</span>(length);
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <a class="code" href="structdevice__t.html">device_t</a> *
<a name="l00066"></a><a class="code" href="ramdrive_8h.html#0d903e082fe2e6d8f1e06073560e5ab3">00066</a> <a class="code" href="ramdrive_8cpp.html#fc84c5ce562d095ec8a54c428f416ff1">dev_ramDrive</a>(<span class="keywordtype">void</span>) {
<a name="l00067"></a>00067 <a class="code" href="structdevice__t.html">device_t</a> *ramDrive = 0x0;
<a name="l00068"></a>00068
<a name="l00069"></a>00069 FILE *ramDisk;
<a name="l00070"></a>00070
<a name="l00071"></a>00071 ramDisk = <a class="code" href="include_2vfs_2file_8h.html#d6a41ac88a7d46d574e8a675fdde136c">fopen</a>(<span class="stringliteral">"./ram.dsk"</span>,<span class="stringliteral">"rb"</span>);
<a name="l00072"></a>00072
<a name="l00073"></a>00073 ramDrive = (<a class="code" href="structdevice__t.html">device_t</a> *)malloc(<span class="keyword">sizeof</span>(<a class="code" href="structdevice__t.html">device_t</a>));
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">ram_data</a> = (<span class="keywordtype">char</span> *)malloc(<a class="code" href="ramdrive_8cpp.html#fa106ea6087f9f8423b6ecc98dda7741">RAM_DRIVE_SIZE</a>);
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="keywordflow">if</span> (ramDisk != 0x0) {
<a name="l00078"></a>00078 printf(<span class="stringliteral">"Loaded Ram Disk\n"</span>);
<a name="l00079"></a>00079 <a class="code" href="include_2vfs_2file_8h.html#3b06878a03209e88c008c77234b89359">fread</a>(<a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">ram_data</a>,<a class="code" href="ramdrive_8cpp.html#fa106ea6087f9f8423b6ecc98dda7741">RAM_DRIVE_SIZE</a>,1,ramDisk);
<a name="l00080"></a>00080 <a class="code" href="include_2vfs_2file_8h.html#872c22366b4c63f4bdb10cd3b7980b11">fclose</a>(ramDisk);
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00083"></a>00083 ramDrive-><a class="code" href="structdevice__t.html#d03b23eb98c9f6f3befb7e3cdb015738">major</a> = 0x1;
<a name="l00084"></a>00084 ramDrive-><a class="code" href="structdevice__t.html#2f31531436aa42b8c47bd26d38f5247d">sectors</a> = <a class="code" href="ramdrive_8cpp.html#fa106ea6087f9f8423b6ecc98dda7741">RAM_DRIVE_SIZE</a> / 512;
<a name="l00085"></a>00085
<a name="l00086"></a>00086 ramDrive-><a class="code" href="structdevice__t.html#9d3cb5a5fdcf892fe1a9683142174f7f">read</a> = <a class="code" href="ramdrive_8cpp.html#38167738dfd96ad366c00f66c6ad30e0">ramDrive_read</a>;
<a name="l00087"></a>00087 ramDrive-><a class="code" href="structdevice__t.html#3bbbd39c26ac540dbbb934faffe752fb">write</a> = <a class="code" href="ramdrive_8cpp.html#79604a2fffa2b0d95884fec8c65a0051">ramDrive_write</a>;
<a name="l00088"></a>00088
<a name="l00089"></a>00089 printf(<span class="stringliteral">"leaving dev_ramDrive()\n"</span>);
<a name="l00090"></a>00090 <span class="keywordflow">return</span>(ramDrive);
<a name="l00091"></a>00091
<a name="l00092"></a>00092 } <span class="comment">// dev_ramDrive</span>
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="keywordtype">int</span>
<a name="l00095"></a><a class="code" href="ramdrive_8h.html#8be6ecd0c2c51beb0c5fd98fd7980a24">00095</a> <a class="code" href="ramdrive_8cpp.html#788c47c723973c46800d667ee8eaa979">dev_ramDestroy</a>(<span class="keywordtype">void</span>) {
<a name="l00096"></a>00096 printf(<span class="stringliteral">"dev_ramDestroy()\n"</span>);
<a name="l00097"></a>00097 FILE *ramDisk;
<a name="l00098"></a>00098
<a name="l00099"></a>00099 ramDisk = <a class="code" href="include_2vfs_2file_8h.html#d6a41ac88a7d46d574e8a675fdde136c">fopen</a>(<span class="stringliteral">"./ram.dsk"</span>,<span class="stringliteral">"wb"</span>);
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <a class="code" href="include_2vfs_2file_8h.html#ca6c1e5b57dc9f5d8551b41ea98bfbb7">fwrite</a>(<a class="code" href="ramdrive_8cpp.html#3d93ebd0d0885d3fcff115d98e8b4aaf">ram_data</a>, <a class="code" href="ramdrive_8cpp.html#fa106ea6087f9f8423b6ecc98dda7741">RAM_DRIVE_SIZE</a> ,1,ramDisk);
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <a class="code" href="include_2vfs_2file_8h.html#872c22366b4c63f4bdb10cd3b7980b11">fclose</a>(ramDisk);
<a name="l00104"></a>00104
<a name="l00105"></a>00105 printf(<span class="stringliteral">"Saved Ram Disk\n"</span>);
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="keywordflow">return</span>(0x0);
<a name="l00108"></a>00108 } <span class="comment">// dev_ramDestroy</span>
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="comment">/***</span>
<a name="l00111"></a>00111 <span class="comment"> $Log: ramdrive_8cpp-source.html,v $
<a name="l00111"></a>00111 <span class="comment"> Revision 1.4 2006/12/06 04:41:01 reddawg
<a name="l00111"></a>00111 <span class="comment"> More syscalls implimented
<a name="l00111"></a>00111 <span class="comment"></span>
<a name="l00112"></a>00112 <span class="comment"> Revision 1.1.1.1 2006/06/01 12:46:15 reddawg</span>
<a name="l00113"></a>00113 <span class="comment"> ubix2</span>
<a name="l00114"></a>00114 <span class="comment"></span>
<a name="l00115"></a>00115 <span class="comment"> Revision 1.2 2005/10/12 00:13:38 reddawg</span>
<a name="l00116"></a>00116 <span class="comment"> Removed</span>
<a name="l00117"></a>00117 <span class="comment"></span>
<a name="l00118"></a>00118 <span class="comment"> Revision 1.1.1.1 2005/09/26 17:24:45 reddawg</span>
<a name="l00119"></a>00119 <span class="comment"> no message</span>
<a name="l00120"></a>00120 <span class="comment"></span>
<a name="l00121"></a>00121 <span class="comment"> Revision 1.5 2004/09/20 00:53:04 flameshadow</span>
<a name="l00122"></a>00122 <span class="comment"> chg: UbixFS::vfs_read() now works for direct block extents</span>
<a name="l00123"></a>00123 <span class="comment"> chg: UbixFS::vfs_read() returns ~0 on error, or the size read in on success</span>
<a name="l00124"></a>00124 <span class="comment"> chg: UbixFS::root member is now a fileDescriptor</span>
<a name="l00125"></a>00125 <span class="comment"> chg: UbixFS::vfs_init() creates a file descriptor for the root dir</span>
<a name="l00126"></a>00126 <span class="comment"> chg: UbixFS::vfs_format() now sets all values in the bTreeHeader before writing</span>
<a name="l00127"></a>00127 <span class="comment"> chg: UbixFS::vfs_format() sets the inode magic number</span>
<a name="l00128"></a>00128 <span class="comment"> chg: device_t::read(device_t *, void *, off_t, size_t)</span>
<a name="l00129"></a>00129 <span class="comment"> chg: device_t::write(device_t *, void *, off_t, size_t)</span>
<a name="l00130"></a>00130 <span class="comment"> chg: vfs_abstract::vfs_read(fileDescriptor *, void *, off_t, size_t)</span>
<a name="l00131"></a>00131 <span class="comment"> chg: vfs_abstract::vfs_write(fileDescriptor *, void *, off_t, size_t)</span>
<a name="l00132"></a>00132 <span class="comment"> chg: ramDrive_read(device_t *dev,void *ptr,off_t offset,size_t length)</span>
<a name="l00133"></a>00133 <span class="comment"> chg: ramDrive_write(device_t *dev,void *ptr,off_t offset,size_t length)</span>
<a name="l00134"></a>00134 <span class="comment"></span>
<a name="l00135"></a>00135 <span class="comment"> Revision 1.4 2004/09/13 20:10:11 flameshadow</span>
<a name="l00136"></a>00136 <span class="comment"> chg: UbixFS::vfs_format() works</span>
<a name="l00137"></a>00137 <span class="comment"> chg: UbixFS::vfs_init() works</span>
<a name="l00138"></a>00138 <span class="comment"></span>
<a name="l00139"></a>00139 <span class="comment"> Revision 1.3 2004/09/13 15:48:29 flameshadow</span>
<a name="l00140"></a>00140 <span class="comment"> chg: oops, the ramDrive is 100MB, not 512MB</span>
<a name="l00141"></a>00141 <span class="comment"></span>
<a name="l00142"></a>00142 <span class="comment"> Revision 1.2 2004/09/13 15:21:26 flameshadow</span>
<a name="l00143"></a>00143 <span class="comment"> add: ramdrive.h</span>
<a name="l00144"></a>00144 <span class="comment"> chg: renamed device_t.size to sectors</span>
<a name="l00145"></a>00145 <span class="comment"> chg: made #define for size of ramdisk</span>
<a name="l00146"></a>00146 <span class="comment"> chg: calculated sectors of ramdisk and stored in the device_t struct</span>
<a name="l00147"></a>00147 <span class="comment"></span>
<a name="l00148"></a>00148 <span class="comment"> Revision 1.1 2004/09/13 14:37:49 flameshadow</span>
<a name="l00149"></a>00149 <span class="comment"> add: ramdrive.cpp</span>
<a name="l00150"></a>00150 <span class="comment"> chg: added ramdrive to the makefile</span>
<a name="l00151"></a>00151 <span class="comment"> chg: finished root dir inode initialization and saving in UbixFS::format()</span>
<a name="l00152"></a>00152 <span class="comment"></span>
<a name="l00153"></a>00153 <span class="comment"> Revision 1.8 2004/08/30 13:29:08 reddawg</span>
<a name="l00154"></a>00154 <span class="comment"> Fixed ramdisk to write/read 512 blocks</span>
<a name="l00155"></a>00155 <span class="comment"></span>
<a name="l00156"></a>00156 <span class="comment"> Revision 1.7 2004/08/13 22:06:54 reddawg</span>
<a name="l00157"></a>00157 <span class="comment"> UbixFS: fixed the test shell</span>
<a name="l00158"></a>00158 <span class="comment"></span>
<a name="l00159"></a>00159 <span class="comment"> Revision 1.6 2004/08/13 21:47:49 reddawg</span>
<a name="l00160"></a>00160 <span class="comment"> Fixed</span>
<a name="l00161"></a>00161 <span class="comment"></span>
<a name="l00162"></a>00162 <span class="comment"> Revision 1.5 2004/08/13 17:25:06 reddawg</span>
<a name="l00163"></a>00163 <span class="comment"> Testing better</span>
<a name="l00164"></a>00164 <span class="comment"></span>
<a name="l00165"></a>00165 <span class="comment"> Revision 1.4 2004/08/13 17:07:32 reddawg</span>
<a name="l00166"></a>00166 <span class="comment"> Works</span>
<a name="l00167"></a>00167 <span class="comment"></span>
<a name="l00168"></a>00168 <span class="comment"> Revision 1.3 2004/08/13 16:58:57 reddawg</span>
<a name="l00169"></a>00169 <span class="comment"> test</span>
<a name="l00170"></a>00170 <span class="comment"></span>
<a name="l00171"></a>00171 <span class="comment"> Revision 1.2 2004/08/13 16:54:14 reddawg</span>
<a name="l00172"></a>00172 <span class="comment"> fixed</span>
<a name="l00173"></a>00173 <span class="comment"></span>
<a name="l00174"></a>00174 <span class="comment"> Revision 1.1 2004/08/13 16:51:55 reddawg</span>
<a name="l00175"></a>00175 <span class="comment"> Start of ubixfs shell</span>
<a name="l00176"></a>00176 <span class="comment"></span>
<a name="l00177"></a>00177 <span class="comment"> END</span>
<a name="l00178"></a>00178 <span class="comment"> ***/</span>
<a name="l00179"></a>00179
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Tue Dec 5 23:34:58 2006 for UbixOS V2 by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.7 </small></address>
</body>
</html>
