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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_74196872fc832845f1a07f1162e5c554.html">ubixfs</a></div>
<h1>block.c</h1><a href="block_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 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"> $Log: block_8c-source.html,v $
<a name="l00026"></a>00026 <span class="comment"> Revision 1.7 2006/12/15 17:47:04 reddawg
<a name="l00026"></a>00026 <span class="comment"> Updates
<a name="l00026"></a>00026 <span class="comment"></span>
<a name="l00027"></a>00027 <span class="comment"> Revision 1.2 2006/12/05 14:10:21 reddawg</span>
<a name="l00028"></a>00028 <span class="comment"> Workign Distro</span>
<a name="l00029"></a>00029 <span class="comment"></span>
<a name="l00030"></a>00030 <span class="comment"> Revision 1.1.1.1 2006/06/01 12:46:17 reddawg</span>
<a name="l00031"></a>00031 <span class="comment"> ubix2</span>
<a name="l00032"></a>00032 <span class="comment"></span>
<a name="l00033"></a>00033 <span class="comment"> Revision 1.2 2005/10/12 00:13:37 reddawg</span>
<a name="l00034"></a>00034 <span class="comment"> Removed</span>
<a name="l00035"></a>00035 <span class="comment"></span>
<a name="l00036"></a>00036 <span class="comment"> Revision 1.1.1.1 2005/09/26 17:24:39 reddawg</span>
<a name="l00037"></a>00037 <span class="comment"> no message</span>
<a name="l00038"></a>00038 <span class="comment"></span>
<a name="l00039"></a>00039 <span class="comment"> Revision 1.6 2004/08/14 11:23:02 reddawg</span>
<a name="l00040"></a>00040 <span class="comment"> Changes</span>
<a name="l00041"></a>00041 <span class="comment"></span>
<a name="l00042"></a>00042 <span class="comment"> Revision 1.5 2004/07/23 09:10:06 reddawg</span>
<a name="l00043"></a>00043 <span class="comment"> ubixfs: cleaned up some functions played with the caching a bit</span>
<a name="l00044"></a>00044 <span class="comment"> vfs: renamed a bunch of functions</span>
<a name="l00045"></a>00045 <span class="comment"> cleaned up a few misc bugs</span>
<a name="l00046"></a>00046 <span class="comment"></span>
<a name="l00047"></a>00047 <span class="comment"> Revision 1.4 2004/06/04 10:19:42 reddawg</span>
<a name="l00048"></a>00048 <span class="comment"> notes: we compile again, thank g-d anyways i was about to cry</span>
<a name="l00049"></a>00049 <span class="comment"></span>
<a name="l00050"></a>00050 <span class="comment"> Revision 1.3 2004/05/19 15:20:06 reddawg</span>
<a name="l00051"></a>00051 <span class="comment"> Fixed reference problems due to changes in drive subsystem</span>
<a name="l00052"></a>00052 <span class="comment"></span>
<a name="l00053"></a>00053 <span class="comment"> Revision 1.2 2004/04/28 02:22:55 reddawg</span>
<a name="l00054"></a>00054 <span class="comment"> This is a fiarly large commit but we are starting to use new driver model</span>
<a name="l00055"></a>00055 <span class="comment"> all around</span>
<a name="l00056"></a>00056 <span class="comment"></span>
<a name="l00057"></a>00057 <span class="comment"> Revision 1.1.1.1 2004/04/15 12:07:07 reddawg</span>
<a name="l00058"></a>00058 <span class="comment"> UbixOS v1.0</span>
<a name="l00059"></a>00059 <span class="comment"></span>
<a name="l00060"></a>00060 <span class="comment"> Revision 1.3 2004/04/13 16:36:34 reddawg</span>
<a name="l00061"></a>00061 <span class="comment"> Changed our copyright, it is all now under a BSD-Style license</span>
<a name="l00062"></a>00062 <span class="comment"></span>
<a name="l00063"></a>00063 <span class="comment"></span>
<a name="l00064"></a>00064 <span class="comment"></span>
<a name="l00065"></a>00065 <span class="comment"> $Id: block_8c-source.html 88 2016-01-12 00:11:29Z reddawg $</span>
<a name="l00066"></a>00066 <span class="comment"></span>
<a name="l00067"></a>00067 <span class="comment">*****************************************************************************************/</span>
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="preprocessor">#include <<a class="code" href="ubixfs_8h.html">ubixfs/ubixfs.h</a>></span>
<a name="l00070"></a>00070 <span class="preprocessor">#include <<a class="code" href="file_8h.html">vfs/file.h</a>></span>
<a name="l00071"></a>00071 <span class="preprocessor">#include <<a class="code" href="mount_8h.html">vfs/mount.h</a>></span>
<a name="l00072"></a>00072
<a name="l00073"></a>00073
<a name="l00074"></a><a class="code" href="block_8c.html#99dfa2e54401fafb70357a6632c4ef10">00074</a> <span class="keywordtype">void</span> <a class="code" href="ubixfs_8h.html#99dfa2e54401fafb70357a6632c4ef10">syncBat</a>(<span class="keyword">struct</span> <a class="code" href="structvfs__mountPoint.html">vfs_mountPoint</a> *mp) {
<a name="l00075"></a>00075 <span class="keyword">struct </span><a class="code" href="structubixFSInfo.html">ubixFSInfo</a> *fsInfo = mp-><a class="code" href="structvfs__mountPoint.html#9771ecae1bc4482ad0282aee5766bd9b">fsInfo</a>;
<a name="l00076"></a>00076 mp-><a class="code" href="structvfs__mountPoint.html#5683a99774aaf81116e1765eb2509df5">device</a>-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#f46913eec9f191290c82db23380bc5df">write</a>(mp-><a class="code" href="structvfs__mountPoint.html#5683a99774aaf81116e1765eb2509df5">device</a>-><a class="code" href="structdevice__node.html#588d09d5dabf1c8866d359aaac799b1c">devInfo</a>-><a class="code" href="structdevice__interface.html#eacb2f431b14ddd1e9fe34db278dfc9e">info</a>,fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>,mp-><a class="code" href="structvfs__mountPoint.html#e5ddbb2d1c7a01716a481bc5462d6c8f">diskLabel</a>-><a class="code" href="structubixDiskLabel.html#a97973cf7f0b67811080656e11c6385f">partitions</a>[mp-><a class="code" href="structvfs__mountPoint.html#26cf95c23f79647d61dc6396bbeb94a6">partition</a>].pOffset,mp-><a class="code" href="structvfs__mountPoint.html#e5ddbb2d1c7a01716a481bc5462d6c8f">diskLabel</a>-><a class="code" href="structubixDiskLabel.html#a97973cf7f0b67811080656e11c6385f">partitions</a>[mp-><a class="code" href="structvfs__mountPoint.html#26cf95c23f79647d61dc6396bbeb94a6">partition</a>].pBatSize);
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a><a class="code" href="block_8c.html#182b9be545371d2fcda6981134de2b44">00079</a> <span class="keywordtype">int</span> <a class="code" href="ubixfs_8h.html#182b9be545371d2fcda6981134de2b44">freeBlocks</a>(<span class="keywordtype">int</span> block,<a class="code" href="structfileDescriptorStruct.html">fileDescriptor</a> *fd) {
<a name="l00080"></a>00080 <span class="keywordtype">int</span> i = block;
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keyword">struct </span><a class="code" href="structubixFSInfo.html">ubixFSInfo</a> *fsInfo = fd-><a class="code" href="structfileDescriptorStruct.html#f8abeb5da4a430885db51246db1356f9">mp</a>-><a class="code" href="structvfs__mountPoint.html#9771ecae1bc4482ad0282aee5766bd9b">fsInfo</a>;
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keywordflow">while</span> (i != 0x0) {
<a name="l00085"></a>00085 block = fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>[i].<a class="code" href="structblockAllocationTableEntry.html#db5281b505d283f4d43d09e327b63c63">nextBlock</a>;
<a name="l00086"></a>00086
<a name="l00087"></a>00087 fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>[i].<a class="code" href="structblockAllocationTableEntry.html#b650496bc3011796ef8b6897f424601c">attributes</a> = 0x0;
<a name="l00088"></a>00088 fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>[i].<a class="code" href="structblockAllocationTableEntry.html#db5281b505d283f4d43d09e327b63c63">nextBlock</a> = 0x0;
<a name="l00089"></a>00089
<a name="l00090"></a>00090 i = block;
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 <a class="code" href="ubixfs_8h.html#99dfa2e54401fafb70357a6632c4ef10">syncBat</a>(fd-><a class="code" href="structfileDescriptorStruct.html#f8abeb5da4a430885db51246db1356f9">mp</a>);
<a name="l00093"></a>00093 <span class="keywordflow">return</span>(i);
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095
<a name="l00096"></a><a class="code" href="block_8c.html#d2880707d0f942f5119f946db4e13e4e">00096</a> <span class="keywordtype">int</span> <a class="code" href="ubixfs_8h.html#d2880707d0f942f5119f946db4e13e4e">getFreeBlocks</a>(<span class="keywordtype">int</span> count,<a class="code" href="structfileDescriptorStruct.html">fileDescriptor</a> *fd) {
<a name="l00097"></a>00097 <a class="code" href="types_8h.html#5847ea0262a5aa61eee48cbe95544a78">uInt32</a> i = 0x0;
<a name="l00098"></a>00098 <a class="code" href="types_8h.html#5847ea0262a5aa61eee48cbe95544a78">uInt32</a> x = 0x0;
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keyword">struct </span><a class="code" href="structubixFSInfo.html">ubixFSInfo</a> *fsInfo = fd-><a class="code" href="structfileDescriptorStruct.html#f8abeb5da4a430885db51246db1356f9">mp</a>-><a class="code" href="structvfs__mountPoint.html#9771ecae1bc4482ad0282aee5766bd9b">fsInfo</a>;
<a name="l00101"></a>00101
<a name="l00102"></a>00102 getBlocks:
<a name="l00103"></a>00103 <span class="keywordflow">for</span> (i=1;i < fsInfo-><a class="code" href="structubixFSInfo.html#4f530e266f49e0310c763653399dafa2">batEntries</a>;i++) {
<a name="l00104"></a>00104 <span class="keywordflow">if</span> (fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>[i].<a class="code" href="structblockAllocationTableEntry.html#b650496bc3011796ef8b6897f424601c">attributes</a> == 0x0) {
<a name="l00105"></a>00105 for (x = 1; x < (<a class="code" href="types_8h.html#5847ea0262a5aa61eee48cbe95544a78">uInt32</a>)count; x++) {
<a name="l00106"></a>00106 <span class="keywordflow">if</span> (fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>[i + x].<a class="code" href="structblockAllocationTableEntry.html#b650496bc3011796ef8b6897f424601c">attributes</a> != 0x0) {
<a name="l00107"></a>00107 <span class="keywordflow">goto</span> getBlocks;
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 <span class="keywordflow">for</span> (x = i; x < i+count;x++) {
<a name="l00111"></a>00111 fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>[x].<a class="code" href="structblockAllocationTableEntry.html#b650496bc3011796ef8b6897f424601c">attributes</a> = 0<a class="code" href="ap-boot_8S.html#1a3ac2137e21f6f0d400f1996914dd19">x1</a>;
<a name="l00112"></a>00112 if ((x+1) == (i+count)) {
<a name="l00113"></a>00113 fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>[x].<a class="code" href="structblockAllocationTableEntry.html#db5281b505d283f4d43d09e327b63c63">nextBlock</a> = -1;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 <span class="keywordflow">else</span> {
<a name="l00116"></a>00116 fsInfo-><a class="code" href="structubixFSInfo.html#03867f147dbbdf3c1d6cdd16a7a33097">blockAllocationTable</a>[x].<a class="code" href="structblockAllocationTableEntry.html#db5281b505d283f4d43d09e327b63c63">nextBlock</a> = x+1;
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 <a class="code" href="ubixfs_8h.html#99dfa2e54401fafb70357a6632c4ef10">syncBat</a>(fd-><a class="code" href="structfileDescriptorStruct.html#f8abeb5da4a430885db51246db1356f9">mp</a>);
<a name="l00120"></a>00120 <span class="keywordflow">return</span>(i);
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 <span class="keywordflow">return</span>(0x0);
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="comment">/***</span>
<a name="l00127"></a>00127 <span class="comment"> END</span>
<a name="l00128"></a>00128 <span class="comment"> ***/</span>
<a name="l00129"></a>00129
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Fri Dec 15 11:18:55 2006 for UbixOS V2 by
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