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<a class="el" href="dir_897b6a2d7bab147dd1db58381aad3984.html">src</a> » <a class="el" href="dir_832905b1f7f5feaf61a306b40c0ac817.html">sys</a> » <a class="el" href="dir_0af38c139db535004c17f658eecde1eb.html">devfs</a></div>
<h1>devfs.c</h1><a href="devfs_8c.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: devfs_8c-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 <<a class="code" href="devfs_8h.html">devfs/devfs.h</a>></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <<a class="code" href="vfs_8h.html">vfs/vfs.h</a>></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <<a class="code" href="device_8h.html">sys/device.h</a>></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <<a class="code" href="types_8h.html">ubixos/types.h</a>></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <<a class="code" href="spinlock_8h.html">ubixos/spinlock.h</a>></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <<a class="code" href="kpanic_8h.html">ubixos/kpanic.h</a>></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <<a class="code" href="kmalloc_8h.html">lib/kmalloc.h</a>></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <<a class="code" href="lib_2string_8h.html">lib/string.h</a>></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <<a class="code" href="kprintf_8h.html">lib/kprintf.h</a>></span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="comment">/* Spinlock for devfs we should start converting to sem/mutex */</span>
<a name="l00041"></a><a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">00041</a> <span class="keyword">static</span> <a class="code" href="spinlock_8h.html#a240e9404b4ede1e0d714610080d1176">spinLock_t</a> <a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a> = <a class="code" href="spinlock_8h.html#0fe85a4f3642683148b25916d6c5eafd">SPIN_LOCK_INITIALIZER</a>;
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="comment">/* Length of dev list */</span>
<a name="l00044"></a><a class="code" href="devfs_8c.html#2858b8792372c6b992e3727e49fe0a8c">00044</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="devfs_8c.html#2858b8792372c6b992e3727e49fe0a8c">devfs_len</a> = 0x0;
<a name="l00045"></a>00045
<a name="l00050"></a><a class="code" href="devfs_8c.html#7b312bcbbf9c2386ec31ccc73f1c3c63">00050</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="devfs_8c.html#7b312bcbbf9c2386ec31ccc73f1c3c63">devfs_initialize</a>(<span class="keyword">struct</span> <a class="code" href="structvfs__mountPoint.html">vfs_mountPoint</a> *mp) {
<a name="l00051"></a>00051 <span class="keyword">struct </span><a class="code" href="structdevfs__info.html">devfs_info</a> *fsInfo = 0x0;
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">/* Allocate memory for the fsInfo */</span>
<a name="l00054"></a>00054 <span class="keywordflow">if</span> ((mp-><a class="code" href="structvfs__mountPoint.html#9771ecae1bc4482ad0282aee5766bd9b">fsInfo</a> = (<span class="keyword">struct</span> <a class="code" href="structdevfs__info.html">devfs_info</a> *)<a class="code" href="kmalloc_8h.html#150eab2ac4ce4553e21ca10e7f441762">kmalloc</a>(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> devfs_info))) == 0x0)
<a name="l00055"></a>00055 <a class="code" href="kpanic_8h.html#a5193288597f00c4f8e3b2939aa6c0ce">K_PANIC</a>(<span class="stringliteral">"devfs: failed to allocate memor\n"</span>);
<a name="l00056"></a>00056
<a name="l00057"></a>00057 fsInfo = mp-><a class="code" href="structvfs__mountPoint.html#9771ecae1bc4482ad0282aee5766bd9b">fsInfo</a>;
<a name="l00058"></a>00058 fsInfo-><a class="code" href="structdevfs__info.html#290940b7d03a61782eab82c0148b0f06">deviceList</a> = 0x0;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="comment">/* Return */</span>
<a name="l00061"></a>00061 <span class="keywordflow">return</span>;
<a name="l00062"></a>00062 }
<a name="l00063"></a>00063
<a name="l00071"></a><a class="code" href="devfs_8c.html#acec49d86336bd84c9feb9dea354381c">00071</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="devfs_8c.html#acec49d86336bd84c9feb9dea354381c">devfs_open</a>(<span class="keywordtype">char</span> *<a class="code" href="structfile.html">file</a>,<a class="code" href="structfileDescriptorStruct.html">fileDescriptor</a> *fd) {
<a name="l00072"></a>00072 <span class="keyword">struct </span><a class="code" href="structdevfs__info.html">devfs_info</a> *fsInfo = fd-><a class="code" href="structfileDescriptorStruct.html#f8abeb5da4a430885db51246db1356f9">mp</a>-><a class="code" href="structvfs__mountPoint.html#9771ecae1bc4482ad0282aee5766bd9b">fsInfo</a>;
<a name="l00073"></a>00073 <span class="keyword">struct </span><a class="code" href="structdevfs__devices.html">devfs_devices</a> *tmpDev = 0x0;
<a name="l00074"></a>00074 <span class="keyword">struct </span><a class="code" href="structdevice__node.html">device_node</a> *<a class="code" href="structdevice.html">device</a> = 0x0;
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <a class="code" href="spinlock_8h.html#2cd9a4502680fb8e7f0fe6b029e558b1">spinLock</a>(&<a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a>);
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keywordflow">if</span> (<a class="code" href="lib_2string_8h.html#6f3dcb20ff11ff9db5904c3cfb61a38c">strcmp</a>(file,<span class="stringliteral">"/"</span>) == 0x0) {
<a name="l00079"></a>00079 fd-><a class="code" href="structfileDescriptorStruct.html#74b5825aa688ae7936fc0492743ae372">start</a> = -1;
<a name="l00080"></a>00080 fd-><a class="code" href="structfileDescriptorStruct.html#97eb3dcefe53610658dc341ca449e290">size</a> = <a class="code" href="devfs_8c.html#2858b8792372c6b992e3727e49fe0a8c">devfs_len</a>;
<a name="l00081"></a>00081 <a class="code" href="spinlock_8h.html#dd996cbbb3b9826dd9c8cf02b66a4c65">spinUnlock</a>(&<a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a>);
<a name="l00082"></a>00082 <span class="keywordflow">return</span>(0<a class="code" href="ap-boot_8S.html#1a3ac2137e21f6f0d400f1996914dd19">x1</a>);
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084 <span class="keywordflow">if</span> (file[0] == <span class="charliteral">'/'</span>)
<a name="l00085"></a>00085 file++;
<a name="l00086"></a>00086 <span class="keywordflow">for</span> (tmpDev = fsInfo-><a class="code" href="structdevfs__info.html#290940b7d03a61782eab82c0148b0f06">deviceList</a>;tmpDev != 0x0;tmpDev = tmpDev-><a class="code" href="structdevfs__devices.html#8da644e221d63a17be9b429f67b6de1d">next</a>) {
<a name="l00087"></a>00087 <span class="keywordflow">if</span> (<a class="code" href="lib_2string_8h.html#6f3dcb20ff11ff9db5904c3cfb61a38c">strcmp</a>(tmpDev-><a class="code" href="structdevfs__devices.html#0200a09acd1456819501f7238df52474">devName</a>,file) == 0x0) {
<a name="l00088"></a>00088 <span class="keywordflow">switch</span> ((fd-><a class="code" href="structfileDescriptorStruct.html#8c43ddd6ff5fd5383bcdde5896846e98">mode</a> & 0x3)) {
<a name="l00089"></a>00089 <span class="keywordflow">case</span> 0:
<a name="l00090"></a>00090 <span class="keywordflow">case</span> 1:
<a name="l00091"></a>00091 device = <a class="code" href="device_8h.html#0002a4ec01ee11597c6751602f3e4c3d">device_find</a>(tmpDev-><a class="code" href="structdevfs__devices.html#646beef3e609fb306cd3ddb202daf694">devMajor</a>,tmpDev-><a class="code" href="structdevfs__devices.html#5e53f9e07fd166b03c4cc94cb7ba6cf6">devMinor</a>);
<a name="l00092"></a>00092 (<span class="keywordtype">void</span> *)fd-><a class="code" href="structfileDescriptorStruct.html#74b5825aa688ae7936fc0492743ae372">start</a> = tmpDev;
<a name="l00093"></a>00093 fd-><a class="code" href="structfileDescriptorStruct.html#97eb3dcefe53610658dc341ca449e290">size</a> = device-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#82fda947114f5c8d53fb7acbd7eb0e21">size</a>;
<a name="l00094"></a>00094 <span class="keywordflow">break</span>;
<a name="l00095"></a>00095 <span class="keywordflow">default</span>:
<a name="l00096"></a>00096 <a class="code" href="kprint_8h.html#b2761bdf0cca73ad0fb5880895210cd8">kprintf</a>(<span class="stringliteral">"Invalid File Mode\n"</span>);
<a name="l00097"></a>00097 <a class="code" href="spinlock_8h.html#dd996cbbb3b9826dd9c8cf02b66a4c65">spinUnlock</a>(&<a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a>);
<a name="l00098"></a>00098 <span class="keywordflow">return</span>(-1);
<a name="l00099"></a>00099 <span class="keywordflow">break</span>;
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 <a class="code" href="spinlock_8h.html#dd996cbbb3b9826dd9c8cf02b66a4c65">spinUnlock</a>(&<a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a>);
<a name="l00102"></a>00102 <span class="keywordflow">return</span>(0<a class="code" href="ap-boot_8S.html#1a3ac2137e21f6f0d400f1996914dd19">x1</a>);
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105 <a class="code" href="spinlock_8h.html#dd996cbbb3b9826dd9c8cf02b66a4c65">spinUnlock</a>(&<a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a>);
<a name="l00106"></a>00106 <span class="keywordflow">return</span>(0x0);
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108
<a name="l00114"></a><a class="code" href="devfs_8c.html#c6b73190c80703169760a556abafab22">00114</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="devfs_8c.html#c6b73190c80703169760a556abafab22">devfs_read</a>(<a class="code" href="structfileDescriptorStruct.html">fileDescriptor</a> *fd,<span class="keywordtype">char</span> *data,<span class="keywordtype">long</span> offset,<span class="keywordtype">long</span> size) {
<a name="l00115"></a>00115 <span class="keywordtype">int</span> i = 0x0,x = 0x0;
<a name="l00116"></a>00116 <a class="code" href="types_8h.html#5847ea0262a5aa61eee48cbe95544a78">uInt32</a> sectors = 0x0;
<a name="l00117"></a>00117 <a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> diff = 0x0;
<a name="l00118"></a>00118 <span class="keyword">struct </span><a class="code" href="structdevice__node.html">device_node</a> *<a class="code" href="structdevice.html">device</a> = 0x0;
<a name="l00119"></a>00119 <span class="keyword">struct </span><a class="code" href="structdevfs__devices.html">devfs_devices</a> *tmpDev = (<span class="keywordtype">void</span> *)fd-><a class="code" href="structfileDescriptorStruct.html#74b5825aa688ae7936fc0492743ae372">start</a>;
<a name="l00120"></a>00120
<a name="l00121"></a>00121 if (tmpDev == -1) {
<a name="l00122"></a>00122 <a class="code" href="kprint_8h.html#b2761bdf0cca73ad0fb5880895210cd8">kprintf</a>(<span class="stringliteral">"Hi Ubie [%i]!!!\n"</span>, size);
<a name="l00123"></a>00123 <span class="keywordflow">for</span> (i = 0;i < size;i++) {
<a name="l00124"></a>00124 data[i] = <span class="charliteral">'a'</span>;
<a name="l00125"></a>00125 fd-><a class="code" href="structfileDescriptorStruct.html#cbc0897e87c2c167cdb8cb1beb77f598">buffer</a>[i] = <span class="charliteral">'a'</span>;
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127 data[size - 1] = <span class="charliteral">'\n'</span>;
<a name="l00128"></a>00128 <span class="keywordflow">return</span>(size);
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 device = <a class="code" href="device_8h.html#0002a4ec01ee11597c6751602f3e4c3d">device_find</a>(tmpDev-><a class="code" href="structdevfs__devices.html#646beef3e609fb306cd3ddb202daf694">devMajor</a>,tmpDev-><a class="code" href="structdevfs__devices.html#5e53f9e07fd166b03c4cc94cb7ba6cf6">devMinor</a>);
<a name="l00132"></a>00132
<a name="l00133"></a>00133 sectors = ((size+511)/512);
<a name="l00134"></a>00134 diff = (offset - ((offset/512)*512));
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="keywordflow">for</span> (i=0x0;i<sectors;i++) {
<a name="l00137"></a>00137 device-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#6caf84418059d0121e76d873e305ddcb">read</a>(device-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#eacb2f431b14ddd1e9fe34db278dfc9e">info</a>,fd-><a class="code" href="structfileDescriptorStruct.html#cbc0897e87c2c167cdb8cb1beb77f598">buffer</a>,i + (offset/512),1);
<a name="l00138"></a>00138 <span class="keywordflow">for</span> (x=0x0;x<(size - (i*512));x++) {
<a name="l00139"></a>00139 <span class="keywordflow">if</span> (diff > 0) {
<a name="l00140"></a>00140 data[x] = fd-><a class="code" href="structfileDescriptorStruct.html#cbc0897e87c2c167cdb8cb1beb77f598">buffer</a>[x + diff];
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 <span class="keywordflow">else</span> {
<a name="l00143"></a>00143 data[x] = fd-><a class="code" href="structfileDescriptorStruct.html#cbc0897e87c2c167cdb8cb1beb77f598">buffer</a>[x];
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 diff = 0x0;
<a name="l00147"></a>00147 data += 512;
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keywordflow">return</span>(size);
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <span class="comment">/************************************************************************</span>
<a name="l00154"></a>00154 <span class="comment"></span>
<a name="l00155"></a>00155 <span class="comment">Function: int writeDevFS(fileDescriptor *fd,char *data,long offset,long size)</span>
<a name="l00156"></a>00156 <span class="comment">Description: Write Data Into File</span>
<a name="l00157"></a>00157 <span class="comment">Notes:</span>
<a name="l00158"></a>00158 <span class="comment"></span>
<a name="l00159"></a>00159 <span class="comment">************************************************************************/</span>
<a name="l00160"></a><a class="code" href="devfs_8c.html#ee16012227e22291c72d6f74258bb8a9">00160</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="devfs_8c.html#ee16012227e22291c72d6f74258bb8a9">devfs_write</a>(<a class="code" href="structfileDescriptorStruct.html">fileDescriptor</a> *fd,<span class="keywordtype">char</span> *data,<span class="keywordtype">long</span> offset,<span class="keywordtype">long</span> size) {
<a name="l00161"></a>00161 <span class="keywordtype">int</span> i = 0x0,x = 0x0;
<a name="l00162"></a>00162 <span class="keyword">struct </span><a class="code" href="structdevice__node.html">device_node</a> *<a class="code" href="structdevice.html">device</a> = 0x0;
<a name="l00163"></a>00163 <span class="keyword">struct </span><a class="code" href="structdevfs__devices.html">devfs_devices</a> *tmpDev = (<span class="keywordtype">void</span> *)fd-><a class="code" href="structfileDescriptorStruct.html#74b5825aa688ae7936fc0492743ae372">start</a>;
<a name="l00164"></a>00164
<a name="l00165"></a>00165 device = <a class="code" href="device_8h.html#0002a4ec01ee11597c6751602f3e4c3d">device_find</a>(tmpDev-><a class="code" href="structdevfs__devices.html#646beef3e609fb306cd3ddb202daf694">devMajor</a>,tmpDev-><a class="code" href="structdevfs__devices.html#5e53f9e07fd166b03c4cc94cb7ba6cf6">devMinor</a>);
<a name="l00166"></a>00166 <span class="keywordflow">for</span> (i=0x0;i<((size+511)/512);i++) {
<a name="l00167"></a>00167 device-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#6caf84418059d0121e76d873e305ddcb">read</a>(device-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#eacb2f431b14ddd1e9fe34db278dfc9e">info</a>,fd-><a class="code" href="structfileDescriptorStruct.html#cbc0897e87c2c167cdb8cb1beb77f598">buffer</a>,i + (offset/512),1);
<a name="l00168"></a>00168 <span class="keywordflow">for</span> (x=0x0;((x < 512) && ((x + (i * 512)) < size));x++) {
<a name="l00169"></a>00169 fd-><a class="code" href="structfileDescriptorStruct.html#cbc0897e87c2c167cdb8cb1beb77f598">buffer</a>[x] = data[x];
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171 device-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#f46913eec9f191290c82db23380bc5df">write</a>(device-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#eacb2f431b14ddd1e9fe34db278dfc9e">info</a>,fd-><a class="code" href="structfileDescriptorStruct.html#cbc0897e87c2c167cdb8cb1beb77f598">buffer</a>,i + (offset/512),1);
<a name="l00172"></a>00172 data += 512;
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174 <span class="keywordflow">return</span>(size);
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176
<a name="l00177"></a>00177
<a name="l00178"></a><a class="code" href="devfs_8h.html#d568bae84bef3691539f1b1d0f6a54b4">00178</a> <span class="keywordtype">int</span> <a class="code" href="devfs_8c.html#d568bae84bef3691539f1b1d0f6a54b4">devfs_makeNode</a>(<span class="keywordtype">char</span> *<a class="code" href="pci_8c.html#8f8f80d37794cde9472343e4487ba3eb">name</a>,<a class="code" href="types_8h.html#a4e0f27a9aca905e340c06d2dcae843c">uInt8</a> type,<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> major,<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> minor) {
<a name="l00179"></a>00179 <span class="keyword">struct </span><a class="code" href="structvfs__mountPoint.html">vfs_mountPoint</a> *mp = 0x0;
<a name="l00180"></a>00180 <span class="keyword">struct </span><a class="code" href="structdevfs__info.html">devfs_info</a> *fsInfo = 0x0;
<a name="l00181"></a>00181 <span class="keyword">struct </span><a class="code" href="structdevfs__devices.html">devfs_devices</a> *tmpDev = 0x0;
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <a class="code" href="spinlock_8h.html#2cd9a4502680fb8e7f0fe6b029e558b1">spinLock</a>(&<a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a>);
<a name="l00184"></a>00184
<a name="l00185"></a>00185 mp = <a class="code" href="mount_8h.html#a8cc926aa9badb781158b6738b1b0f2d">vfs_findMount</a>(<span class="stringliteral">"devfs"</span>);
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="keywordflow">if</span> (mp == 0x0) {
<a name="l00188"></a>00188 <a class="code" href="kprint_8h.html#b2761bdf0cca73ad0fb5880895210cd8">kprintf</a>(<span class="stringliteral">"Error: Can't Find Mount Point\n"</span>);
<a name="l00189"></a>00189 <a class="code" href="spinlock_8h.html#dd996cbbb3b9826dd9c8cf02b66a4c65">spinUnlock</a>(&<a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a>);
<a name="l00190"></a>00190 <span class="keywordflow">return</span>(-1);
<a name="l00191"></a>00191 }
<a name="l00192"></a>00192
<a name="l00193"></a>00193 fsInfo = mp-><a class="code" href="structvfs__mountPoint.html#9771ecae1bc4482ad0282aee5766bd9b">fsInfo</a>;
<a name="l00194"></a>00194
<a name="l00195"></a>00195 tmpDev = (<span class="keyword">struct </span><a class="code" href="structdevfs__devices.html">devfs_devices</a> *)<a class="code" href="kmalloc_8h.html#150eab2ac4ce4553e21ca10e7f441762">kmalloc</a>(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdevfs__devices.html">devfs_devices</a>));
<a name="l00196"></a>00196
<a name="l00197"></a>00197 tmpDev-><a class="code" href="structdevfs__devices.html#3316a35e21232bab1603df7426dded2d">devType</a> = type;
<a name="l00198"></a>00198 tmpDev-><a class="code" href="structdevfs__devices.html#646beef3e609fb306cd3ddb202daf694">devMajor</a> = major;
<a name="l00199"></a>00199 tmpDev-><a class="code" href="structdevfs__devices.html#5e53f9e07fd166b03c4cc94cb7ba6cf6">devMinor</a> = minor;
<a name="l00200"></a>00200 <a class="code" href="lib_2string_8h.html#c38cd16373d98782e1465bd3d5aba470">sprintf</a>(tmpDev-><a class="code" href="structdevfs__devices.html#0200a09acd1456819501f7238df52474">devName</a>,name);
<a name="l00201"></a>00201 <a class="code" href="devfs_8c.html#2858b8792372c6b992e3727e49fe0a8c">devfs_len</a> += <a class="code" href="strlen_8S.html#0bcafbeba7f59f157715cc462036b8d3">strlen</a>(name) + 1;
<a name="l00202"></a>00202
<a name="l00203"></a>00203 tmpDev-><a class="code" href="structdevfs__devices.html#8da644e221d63a17be9b429f67b6de1d">next</a> = fsInfo-><a class="code" href="structdevfs__info.html#290940b7d03a61782eab82c0148b0f06">deviceList</a>;
<a name="l00204"></a>00204 tmpDev-><a class="code" href="structdevfs__devices.html#249566533e1645abb22645cbe47b4bf2">prev</a> = 0x0;
<a name="l00205"></a>00205 <span class="keywordflow">if</span> (fsInfo-><a class="code" href="structdevfs__info.html#290940b7d03a61782eab82c0148b0f06">deviceList</a> != 0x0) {
<a name="l00206"></a>00206 fsInfo-><a class="code" href="structdevfs__info.html#290940b7d03a61782eab82c0148b0f06">deviceList</a>-><a class="code" href="structdevfs__devices.html#249566533e1645abb22645cbe47b4bf2">prev</a> = tmpDev;
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208
<a name="l00209"></a>00209 fsInfo-><a class="code" href="structdevfs__info.html#290940b7d03a61782eab82c0148b0f06">deviceList</a> = tmpDev;
<a name="l00210"></a>00210
<a name="l00211"></a>00211 <a class="code" href="spinlock_8h.html#dd996cbbb3b9826dd9c8cf02b66a4c65">spinUnlock</a>(&<a class="code" href="devfs_8c.html#0b9ed1fd2d4151d3e7e76f3a584e9b27">devfsSpinLock</a>);
<a name="l00212"></a>00212 <span class="keywordflow">return</span>(0x0);
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214
<a name="l00215"></a><a class="code" href="devfs_8h.html#c74c840a034d38b197e93bf883001d0d">00215</a> <span class="keywordtype">int</span> <a class="code" href="devfs_8c.html#c74c840a034d38b197e93bf883001d0d">devfs_init</a>() {
<a name="l00216"></a>00216 <span class="comment">/* Build our devfs struct */</span>
<a name="l00217"></a>00217 <span class="keyword">struct </span><a class="code" href="structfileSystem.html">fileSystem</a> devFS =
<a name="l00218"></a>00218 {<a class="code" href="types_8h.html#070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, <span class="comment">/* prev */</span>
<a name="l00219"></a>00219 <a class="code" href="types_8h.html#070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, <span class="comment">/* next */</span>
<a name="l00220"></a>00220 (<span class="keywordtype">void</span> *)<a class="code" href="devfs_8c.html#7b312bcbbf9c2386ec31ccc73f1c3c63">devfs_initialize</a>, <span class="comment">/* vfsInitFS */</span>
<a name="l00221"></a>00221 (<span class="keywordtype">void</span> *)<a class="code" href="devfs_8c.html#c6b73190c80703169760a556abafab22">devfs_read</a>, <span class="comment">/* vfsRead */</span>
<a name="l00222"></a>00222 (<span class="keywordtype">void</span> *)<a class="code" href="devfs_8c.html#ee16012227e22291c72d6f74258bb8a9">devfs_write</a>, <span class="comment">/* vfsWrite */</span>
<a name="l00223"></a>00223 (<span class="keywordtype">void</span> *)<a class="code" href="devfs_8c.html#acec49d86336bd84c9feb9dea354381c">devfs_open</a>, <span class="comment">/* vfsOpenFile */</span>
<a name="l00224"></a>00224 NULL, <span class="comment">/* vfsUnlink */</span>
<a name="l00225"></a>00225 NULL, <span class="comment">/* vfsMakeDir */</span>
<a name="l00226"></a>00226 NULL, <span class="comment">/* vfsRemDir */</span>
<a name="l00227"></a>00227 NULL, <span class="comment">/* vfsSync */</span>
<a name="l00228"></a>00228 1 <span class="comment">/* vfsType */</span>
<a name="l00229"></a>00229 }; <span class="comment">/* devFS */</span>
<a name="l00230"></a>00230
<a name="l00231"></a>00231 <span class="keywordflow">if</span> (<a class="code" href="vfs_8h.html#8652b1ccbcf7d2a872c5781640f7d59a">vfsRegisterFS</a>(devFS) != 0x0) {
<a name="l00232"></a>00232 <span class="comment">//sysErr(systemErr,"Unable To Enable DevFS");</span>
<a name="l00233"></a>00233 <span class="keywordflow">return</span>(0<a class="code" href="ap-boot_8S.html#1a3ac2137e21f6f0d400f1996914dd19">x1</a>);
<a name="l00234"></a>00234 }
<a name="l00235"></a>00235 <span class="comment">/* Mount our devfs this will build the devfs container node */</span>
<a name="l00236"></a>00236 <a class="code" href="mount_8h.html#1255ebfdcd5f7048ffe187e836f8eb28">vfs_mount</a>(0x0,0x0,0x0,0<a class="code" href="ap-boot_8S.html#1a3ac2137e21f6f0d400f1996914dd19">x1</a>,<span class="stringliteral">"devfs"</span>,<span class="stringliteral">"rw"</span>); <span class="comment">// Mount Device File System</span>
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <span class="comment">/* Return */</span>
<a name="l00239"></a>00239 <span class="keywordflow">return</span>(0x0);
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241
<a name="l00242"></a>00242 <span class="comment">/***</span>
<a name="l00243"></a>00243 <span class="comment"> END</span>
<a name="l00244"></a>00244 <span class="comment"> ***/</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Fri Dec 15 11:18:54 2006 for UbixOS V2 by
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