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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_cbd3b6f8ac372a007cdc756f615c76fe.html">ufs</a></div>
<h1>ufs.c</h1><a href="ufs_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"> $Id$</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="include_2vfs_2vfs_8h.html">vfs/vfs.h</a>></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <<a class="code" href="ufs_8h.html">ufs/ufs.h</a>></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <<a class="code" href="ffs_8h.html">ufs/ffs.h</a>></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <<a class="code" href="kprintf_8h.html">lib/kprintf.h</a>></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <<a class="code" href="kmalloc_8h.html">lib/kmalloc.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="lib_2string_8h.html">lib/string.h</a>></span>
<a name="l00037"></a>00037
<a name="l00038"></a><a class="code" href="ufs_8c.html#1f8f4eabaf5119f68bfc6ee1ff715952">00038</a> <span class="preprocessor">#define VBLKSHIFT 12</span>
<a name="l00039"></a><a class="code" href="ufs_8c.html#df63a6145c73332883effc7746beffc2">00039</a> <span class="preprocessor"></span><span class="preprocessor">#define VBLKSIZE (1 << VBLKSHIFT)</span>
<a name="l00040"></a><a class="code" href="ufs_8c.html#8c3f8bc1aebec0e57f9e9a6b2ffa640e">00040</a> <span class="preprocessor"></span><span class="preprocessor">#define VBLKMASK (VBLKSIZE - 1)</span>
<a name="l00041"></a><a class="code" href="ufs_8c.html#e977f66f7be1f87abd0d0603e3852a06">00041</a> <span class="preprocessor"></span><span class="preprocessor">#define DBPERVBLK (VBLKSIZE / DEV_BSIZE)</span>
<a name="l00042"></a><a class="code" href="ufs_8c.html#e4524da6e4d6ec5c11dbe5cf4559adf3">00042</a> <span class="preprocessor"></span><span class="preprocessor">#define INDIRPERVBLK(fs) (NINDIR(fs) / ((fs)->fs_bsize >> VBLKSHIFT))</span>
<a name="l00043"></a><a class="code" href="ufs_8c.html#3fe028b32899dee05ea1b48efb73fe33">00043</a> <span class="preprocessor"></span><span class="preprocessor">#define IPERVBLK(fs) (INOPB(fs) / ((fs)->fs_bsize >> VBLKSHIFT))</span>
<a name="l00044"></a><a class="code" href="ufs_8c.html#093aab4d88e8ac7dacc93d9cb6cc58ee">00044</a> <span class="preprocessor"></span><span class="preprocessor">#define INOPB(fs) ((fs)->fs_inopb)</span>
<a name="l00045"></a><a class="code" href="ufs_8c.html#1b76f991135322a54450c8604038d12b">00045</a> <span class="preprocessor"></span><span class="preprocessor">#define INO_TO_VBA(fs, ipervblk, x) \</span>
<a name="l00046"></a>00046 <span class="preprocessor"> (fsbtodb(fs, cgimin(fs, ino_to_cg(fs, x))) + \</span>
<a name="l00047"></a>00047 <span class="preprocessor"> (((x) % (fs)->fs_ipg) / (ipervblk) * DBPERVBLK))</span>
<a name="l00048"></a><a class="code" href="ufs_8c.html#dd0c55395013d386f53627b02e0cf27a">00048</a> <span class="preprocessor"></span><span class="preprocessor">#define INO_TO_VBO(ipervblk, x) ((x) % ipervblk)</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span>
<a name="l00050"></a>00050
<a name="l00051"></a><a class="code" href="ufs_8c.html#27a0276d7cf729f1a89bd46dac8a9650">00051</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="ufs_8c.html#27a0276d7cf729f1a89bd46dac8a9650">dskread</a>(<span class="keywordtype">void</span> *<a class="code" href="structbuf.html">buf</a>, <a class="code" href="include_2ubixos_2types_8h.html#250ac047bf3984b5dae755276a305d64">u_int64_t</a> block,<a class="code" href="include_2ubixos_2types_8h.html#7619b847aeded8a6d14cbfa212b2cdfb">size_t</a> count,<a class="code" href="structfileDescriptor.html">fileDescriptor</a> *fd) {
<a name="l00052"></a>00052 fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,buf,block,count);
<a name="l00053"></a>00053 <span class="keywordflow">return</span>(0x0);
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">//struct dmadat {</span>
<a name="l00057"></a>00057 <span class="comment">// char blkbuf[VBLKSIZE]; /* filesystem blocks */</span>
<a name="l00058"></a>00058 <span class="comment">// char indbuf[VBLKSIZE]; /* indir blocks */</span>
<a name="l00059"></a>00059 <span class="comment">// char sbbuf[SBLOCKSIZE]; /* superblock */</span>
<a name="l00060"></a>00060 <span class="comment">// char secbuf[DEV_BSIZE]; /* for MBR/disklabel */</span>
<a name="l00061"></a>00061 <span class="comment">// };</span>
<a name="l00062"></a>00062 <span class="comment">//static struct dmadat *dmadat;</span>
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="comment">//static int ls,dsk_meta;</span>
<a name="l00065"></a>00065
<a name="l00066"></a><a class="code" href="ufs_8c.html#8d5779eb674b28e517275bda58b7c041">00066</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="ufs_8c.html#8d5779eb674b28e517275bda58b7c041">sblock_try</a>[] = <a class="code" href="ufs_8h.html#63f5b70b0dfe26fd775e89713f552e23">SBLOCKSEARCH</a>;
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="preprocessor">#if defined(UFS2_ONLY)</span>
<a name="l00069"></a>00069 <span class="preprocessor"></span><span class="preprocessor">#define DIP(field) dp2.field</span>
<a name="l00070"></a>00070 <span class="preprocessor"></span><span class="preprocessor">#elif defined(UFS1_ONLY)</span>
<a name="l00071"></a>00071 <span class="preprocessor"></span><span class="preprocessor">#define DIP(field) dp1.field</span>
<a name="l00072"></a>00072 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00073"></a><a class="code" href="ufs_8c.html#a5a59d37ee7a73e41be17638269b06a9">00073</a> <span class="preprocessor"></span><span class="preprocessor">#define DIP(field) fs->fs_magic == FS_UFS1_MAGIC ? dp1.field : dp2.field</span>
<a name="l00074"></a>00074 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00075"></a>00075 <span class="preprocessor"></span>
<a name="l00076"></a>00076
<a name="l00077"></a><a class="code" href="ufs_8c.html#03b001870aa568dcdcc44c1dc79a49dd">00077</a> <span class="keyword">static</span> <a class="code" href="include_2ubixos_2types_8h.html#87bd983bf349d8b86901f3200d559e8e">ssize_t</a> <a class="code" href="ufs_8c.html#03b001870aa568dcdcc44c1dc79a49dd">fsread</a>(<a class="code" href="include_2ubixos_2types_8h.html#73341b7381d39d6e5b80ff9f23379dbd">ino_t</a> inode, <span class="keywordtype">void</span> *<a class="code" href="structbuf.html">buf</a>, <a class="code" href="include_2ubixos_2types_8h.html#7619b847aeded8a6d14cbfa212b2cdfb">size_t</a> nbyte,<a class="code" href="structfileDescriptor.html">fileDescriptor</a> *fd) {
<a name="l00078"></a>00078 <span class="preprocessor">#ifndef UFS2_ONLY</span>
<a name="l00079"></a>00079 <span class="preprocessor"></span> <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structufs1__dinode.html">ufs1_dinode</a> dp1;
<a name="l00080"></a>00080 <span class="preprocessor">#endif</span>
<a name="l00081"></a>00081 <span class="preprocessor"></span><span class="preprocessor">#ifndef UFS1_ONLY</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span> <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structufs2__dinode.html">ufs2_dinode</a> dp2;
<a name="l00083"></a>00083 <span class="preprocessor">#endif</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span> <span class="keyword">static</span> <a class="code" href="include_2ubixos_2types_8h.html#73341b7381d39d6e5b80ff9f23379dbd">ino_t</a> inomap;
<a name="l00085"></a>00085 <span class="keywordtype">char</span> *blkbuf;
<a name="l00086"></a>00086 <span class="keywordtype">void</span> *indbuf;
<a name="l00087"></a>00087 <span class="keyword">struct </span><a class="code" href="structfs.html">fs</a> *<a class="code" href="structfs.html">fs</a>;
<a name="l00088"></a>00088 <span class="keywordtype">char</span> *s;
<a name="l00089"></a>00089 <a class="code" href="include_2ubixos_2types_8h.html#7619b847aeded8a6d14cbfa212b2cdfb">size_t</a> n, nb, size, off, vboff;
<a name="l00090"></a>00090 <a class="code" href="ufs_8h.html#cfdbacc42c74f81152f66f8f81316513">ufs_lbn_t</a> lbn;
<a name="l00091"></a>00091 <a class="code" href="ufs_8h.html#d1d47f60518d845f7e798fa0f3458753">ufs2_daddr_t</a> addr, vbaddr;
<a name="l00092"></a>00092 <span class="keyword">static</span> <a class="code" href="ufs_8h.html#d1d47f60518d845f7e798fa0f3458753">ufs2_daddr_t</a> blkmap, indmap;
<a name="l00093"></a>00093 <a class="code" href="include_2ubixos_2types_8h.html#c319c165d52643e43249fe003e18bdf3">u_int</a> u;
<a name="l00094"></a>00094
<a name="l00095"></a>00095 blkbuf = fd->dmadat->blkbuf;
<a name="l00096"></a>00096 indbuf = fd->dmadat->indbuf;
<a name="l00097"></a>00097 fs = (<span class="keyword">struct </span>fs *)fd->dmadat->sbbuf;
<a name="l00098"></a>00098 if (!fd->dsk_meta) {
<a name="l00099"></a>00099 inomap = 0;
<a name="l00100"></a>00100 <span class="keywordflow">for</span> (n = 0; <a class="code" href="ufs_8c.html#8d5779eb674b28e517275bda58b7c041">sblock_try</a>[n] != -1; n++) {
<a name="l00101"></a>00101 <span class="keywordflow">if</span> (<a class="code" href="ufs_8c.html#27a0276d7cf729f1a89bd46dac8a9650">dskread</a>(fs, <a class="code" href="ufs_8c.html#8d5779eb674b28e517275bda58b7c041">sblock_try</a>[n] / <a class="code" href="ufs_8h.html#9c8466b6111a11195a5cd2478c648e32">DEV_BSIZE</a>, 16,fd))
<a name="l00102"></a>00102 <span class="keywordflow">return</span> -1;
<a name="l00103"></a>00103 <span class="keywordflow">if</span> ((
<a name="l00104"></a>00104 #<span class="keywordflow">if</span> defined(UFS1_ONLY)
<a name="l00105"></a>00105 fs->fs_magic == <a class="code" href="ufs_8h.html#ce25c7a73c514a8e575e1ba8c15c9a9e">FS_UFS1_MAGIC</a>
<a name="l00106"></a>00106 #elif defined(UFS2_ONLY)
<a name="l00107"></a>00107 (fs->fs_magic == <a class="code" href="ufs_8h.html#0b73b7456fc1dee932dc0c1056c613fc">FS_UFS2_MAGIC</a> &&
<a name="l00108"></a>00108 fs->fs_sblockloc == <a class="code" href="ufs_8c.html#8d5779eb674b28e517275bda58b7c041">sblock_try</a>[n])
<a name="l00109"></a>00109 #<span class="keywordflow">else</span>
<a name="l00110"></a>00110 fs->fs_magic == <a class="code" href="ufs_8h.html#ce25c7a73c514a8e575e1ba8c15c9a9e">FS_UFS1_MAGIC</a> ||
<a name="l00111"></a>00111 (fs->fs_magic == <a class="code" href="ufs_8h.html#0b73b7456fc1dee932dc0c1056c613fc">FS_UFS2_MAGIC</a> &&
<a name="l00112"></a>00112 fs->fs_sblockloc == <a class="code" href="ufs_8c.html#8d5779eb674b28e517275bda58b7c041">sblock_try</a>[n])
<a name="l00113"></a>00113 #endif
<a name="l00114"></a>00114 ) &&
<a name="l00115"></a>00115 fs->fs_bsize <= <a class="code" href="ufs_8h.html#6e852e863e63ab118ec196d1157a1dbd">MAXBSIZE</a> &&
<a name="l00116"></a>00116 fs->fs_bsize >= <span class="keyword">sizeof</span>(<span class="keyword">struct</span> fs))
<a name="l00117"></a>00117 <span class="keywordflow">break</span>;
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 <span class="keywordflow">if</span> (<a class="code" href="ufs_8c.html#8d5779eb674b28e517275bda58b7c041">sblock_try</a>[n] == -1) {
<a name="l00120"></a>00120 <a class="code" href="kprint_8h.html#b2761bdf0cca73ad0fb5880895210cd8">kprintf</a>(<span class="stringliteral">"Not ufs\n"</span>);
<a name="l00121"></a>00121 <span class="keywordflow">return</span> -1;
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 fd->dsk_meta++;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (!inode)
<a name="l00126"></a>00126 <span class="keywordflow">return</span> 0;
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (inomap != inode) {
<a name="l00128"></a>00128 n = <a class="code" href="ufs_8c.html#3fe028b32899dee05ea1b48efb73fe33">IPERVBLK</a>(fs);
<a name="l00129"></a>00129 <span class="keywordflow">if</span> (<a class="code" href="ufs_8c.html#27a0276d7cf729f1a89bd46dac8a9650">dskread</a>(blkbuf, <a class="code" href="ufs_8c.html#1b76f991135322a54450c8604038d12b">INO_TO_VBA</a>(fs, n, inode), <a class="code" href="ufs_8c.html#e977f66f7be1f87abd0d0603e3852a06">DBPERVBLK</a>,fd))
<a name="l00130"></a>00130 <span class="keywordflow">return</span> -1;
<a name="l00131"></a>00131 n = <a class="code" href="ufs_8c.html#dd0c55395013d386f53627b02e0cf27a">INO_TO_VBO</a>(n, inode);
<a name="l00132"></a>00132 <span class="preprocessor">#if defined(UFS1_ONLY)</span>
<a name="l00133"></a>00133 <span class="preprocessor"></span> dp1 = ((<span class="keyword">struct </span><a class="code" href="structufs1__dinode.html">ufs1_dinode</a> *)blkbuf)[n];
<a name="l00134"></a>00134 <span class="preprocessor">#elif defined(UFS2_ONLY)</span>
<a name="l00135"></a>00135 <span class="preprocessor"></span> dp2 = ((<span class="keyword">struct </span><a class="code" href="structufs2__dinode.html">ufs2_dinode</a> *)blkbuf)[n];
<a name="l00136"></a>00136 <span class="preprocessor">#else</span>
<a name="l00137"></a>00137 <span class="preprocessor"></span> <span class="keywordflow">if</span> (fs-><a class="code" href="structfs.html#acc2f0aa6f3902f165c563ce5ba76373">fs_magic</a> == <a class="code" href="ufs_8h.html#ce25c7a73c514a8e575e1ba8c15c9a9e">FS_UFS1_MAGIC</a>)
<a name="l00138"></a>00138 dp1 = ((<span class="keyword">struct </span><a class="code" href="structufs1__dinode.html">ufs1_dinode</a> *)blkbuf)[n];
<a name="l00139"></a>00139 <span class="keywordflow">else</span>
<a name="l00140"></a>00140 dp2 = ((<span class="keyword">struct </span><a class="code" href="structufs2__dinode.html">ufs2_dinode</a> *)blkbuf)[n];
<a name="l00141"></a>00141 <span class="preprocessor">#endif</span>
<a name="l00142"></a>00142 <span class="preprocessor"></span> inomap = inode;
<a name="l00143"></a>00143 fd-><a class="code" href="structfileDescriptor.html#09c5cd0d4979a70b8d7098319cd00b7c">offset</a> = 0;
<a name="l00144"></a>00144 blkmap = indmap = 0;
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 s = buf;
<a name="l00147"></a>00147 size = <a class="code" href="ufs_8c.html#a5a59d37ee7a73e41be17638269b06a9">DIP</a>(<a class="code" href="structufs2__dinode.html#d5993494c57c494293c25dc81ec3b154">di_size</a>);
<a name="l00148"></a>00148 fd-><a class="code" href="structfileDescriptor.html#2967356da3f80c5df1405f4e2fb4272b">size</a> = size;
<a name="l00149"></a>00149 <span class="comment">//kprintf("Size: [%i]\n",size);</span>
<a name="l00150"></a>00150 n = size - fd-><a class="code" href="structfileDescriptor.html#09c5cd0d4979a70b8d7098319cd00b7c">offset</a>;
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (nbyte > n)
<a name="l00152"></a>00152 nbyte = n;
<a name="l00153"></a>00153 nb = nbyte;
<a name="l00154"></a>00154 <span class="keywordflow">while</span> (nb) {
<a name="l00155"></a>00155 lbn = <a class="code" href="ufs_8h.html#1ea09415cf1bc5de0d0d4a7158a5c736">lblkno</a>(fs, fd-><a class="code" href="structfileDescriptor.html#09c5cd0d4979a70b8d7098319cd00b7c">offset</a>);
<a name="l00156"></a>00156 off = <a class="code" href="ufs_8h.html#cd9d1b3e1eed7fc3850f8a78636dd5a7">blkoff</a>(fs, fd-><a class="code" href="structfileDescriptor.html#09c5cd0d4979a70b8d7098319cd00b7c">offset</a>);
<a name="l00157"></a>00157 <span class="keywordflow">if</span> (lbn < <a class="code" href="ufs_8h.html#0c136d7ef3223bdd2b6e7c83c65bb508">NDADDR</a>) {
<a name="l00158"></a>00158 addr = <a class="code" href="ufs_8c.html#a5a59d37ee7a73e41be17638269b06a9">DIP</a>(<a class="code" href="structufs2__dinode.html#b58df70dccb25a1956369580570d5f8e">di_db</a>[lbn]);
<a name="l00159"></a>00159 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (lbn < <a class="code" href="ufs_8h.html#0c136d7ef3223bdd2b6e7c83c65bb508">NDADDR</a> + <a class="code" href="ufs_8h.html#6d58397786421684bb8db78f01e13ae6">NINDIR</a>(fs)) {
<a name="l00160"></a>00160 n = <a class="code" href="ufs_8c.html#e4524da6e4d6ec5c11dbe5cf4559adf3">INDIRPERVBLK</a>(fs);
<a name="l00161"></a>00161 addr = <a class="code" href="ufs_8c.html#a5a59d37ee7a73e41be17638269b06a9">DIP</a>(<a class="code" href="structufs2__dinode.html#5c8206854e5687ca01e1d52d06b39eb1">di_ib</a>[0]);
<a name="l00162"></a>00162 u = (<a class="code" href="include_2ubixos_2types_8h.html#c319c165d52643e43249fe003e18bdf3">u_int</a>)(lbn - <a class="code" href="ufs_8h.html#0c136d7ef3223bdd2b6e7c83c65bb508">NDADDR</a>) / (n * <a class="code" href="ufs_8c.html#e977f66f7be1f87abd0d0603e3852a06">DBPERVBLK</a>);
<a name="l00163"></a>00163 vbaddr = <a class="code" href="ufs_8h.html#e26526d0ac7505aae7345f0288c17fe6">fsbtodb</a>(fs, addr) + u;
<a name="l00164"></a>00164 <span class="keywordflow">if</span> (indmap != vbaddr) {
<a name="l00165"></a>00165 <span class="keywordflow">if</span> (<a class="code" href="ufs_8c.html#27a0276d7cf729f1a89bd46dac8a9650">dskread</a>(indbuf, vbaddr, <a class="code" href="ufs_8c.html#e977f66f7be1f87abd0d0603e3852a06">DBPERVBLK</a>,fd))
<a name="l00166"></a>00166 <span class="keywordflow">return</span> -1;
<a name="l00167"></a>00167 indmap = vbaddr;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169 n = (lbn - <a class="code" href="ufs_8h.html#0c136d7ef3223bdd2b6e7c83c65bb508">NDADDR</a>) & (n - 1);
<a name="l00170"></a>00170 <span class="preprocessor">#if defined(UFS1_ONLY)</span>
<a name="l00171"></a>00171 <span class="preprocessor"></span> addr = ((<a class="code" href="ufs_8h.html#6c4d2453c62592d30d9c981e4ee01323">ufs1_daddr_t</a> *)indbuf)[n];
<a name="l00172"></a>00172 <span class="preprocessor">#elif defined(UFS2_ONLY)</span>
<a name="l00173"></a>00173 <span class="preprocessor"></span> addr = ((<a class="code" href="ufs_8h.html#d1d47f60518d845f7e798fa0f3458753">ufs2_daddr_t</a> *)indbuf)[n];
<a name="l00174"></a>00174 <span class="preprocessor">#else</span>
<a name="l00175"></a>00175 <span class="preprocessor"></span> <span class="keywordflow">if</span> (fs-><a class="code" href="structfs.html#acc2f0aa6f3902f165c563ce5ba76373">fs_magic</a> == <a class="code" href="ufs_8h.html#ce25c7a73c514a8e575e1ba8c15c9a9e">FS_UFS1_MAGIC</a>)
<a name="l00176"></a>00176 addr = ((<a class="code" href="ufs_8h.html#6c4d2453c62592d30d9c981e4ee01323">ufs1_daddr_t</a> *)indbuf)[n];
<a name="l00177"></a>00177 <span class="keywordflow">else</span>
<a name="l00178"></a>00178 addr = ((<a class="code" href="ufs_8h.html#d1d47f60518d845f7e798fa0f3458753">ufs2_daddr_t</a> *)indbuf)[n];
<a name="l00179"></a>00179 <span class="preprocessor">#endif</span>
<a name="l00180"></a>00180 <span class="preprocessor"></span> } <span class="keywordflow">else</span> {
<a name="l00181"></a>00181 <span class="keywordflow">return</span> -1;
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183 vbaddr = <a class="code" href="ufs_8h.html#e26526d0ac7505aae7345f0288c17fe6">fsbtodb</a>(fs, addr) + (off >> <a class="code" href="include_2vfs_2file_8h.html#1f8f4eabaf5119f68bfc6ee1ff715952">VBLKSHIFT</a>) * <a class="code" href="ufs_8c.html#e977f66f7be1f87abd0d0603e3852a06">DBPERVBLK</a>;
<a name="l00184"></a>00184 vboff = off & <a class="code" href="ufs_8c.html#8c3f8bc1aebec0e57f9e9a6b2ffa640e">VBLKMASK</a>;
<a name="l00185"></a>00185 n = <a class="code" href="ufs_8h.html#d35c4c33dc54a0b8db742e0b3b5f64aa">sblksize</a>(fs, size, lbn) - (off & ~VBLKMASK);
<a name="l00186"></a>00186 <span class="keywordflow">if</span> (n > <a class="code" href="include_2vfs_2file_8h.html#df63a6145c73332883effc7746beffc2">VBLKSIZE</a>)
<a name="l00187"></a>00187 n = <a class="code" href="include_2vfs_2file_8h.html#df63a6145c73332883effc7746beffc2">VBLKSIZE</a>;
<a name="l00188"></a>00188 <span class="keywordflow">if</span> (blkmap != vbaddr) {
<a name="l00189"></a>00189 <span class="keywordflow">if</span> (<a class="code" href="ufs_8c.html#27a0276d7cf729f1a89bd46dac8a9650">dskread</a>(blkbuf, vbaddr, n >> <a class="code" href="ufs_8h.html#9734470bf89968d142073fd334bf9cb6">DEV_BSHIFT</a>,fd))
<a name="l00190"></a>00190 <span class="keywordflow">return</span> -1;
<a name="l00191"></a>00191 blkmap = vbaddr;
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193 n -= vboff;
<a name="l00194"></a>00194 <span class="keywordflow">if</span> (n > nb)
<a name="l00195"></a>00195 n = nb;
<a name="l00196"></a>00196 <a class="code" href="lib_2string_8h.html#e33b18edb618c656b9b795b9fce2316c">memcpy</a>(s, blkbuf + vboff, n);
<a name="l00197"></a>00197 s += n;
<a name="l00198"></a>00198 fd-><a class="code" href="structfileDescriptor.html#09c5cd0d4979a70b8d7098319cd00b7c">offset</a> += n;
<a name="l00199"></a>00199 nb -= n;
<a name="l00200"></a>00200 }
<a name="l00201"></a>00201 <span class="keywordflow">return</span> nbyte;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203
<a name="l00204"></a>00204
<a name="l00205"></a>00205
<a name="l00206"></a>00206
<a name="l00207"></a><a class="code" href="ufs_8c.html#ccfc6cc8f916e7f58db4ac350bdc1e9b">00207</a> <span class="keyword">static</span> __inline <span class="keywordtype">int</span> <a class="code" href="ufs_8c.html#ccfc6cc8f916e7f58db4ac350bdc1e9b">fsfind</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="pci_8c.html#8f8f80d37794cde9472343e4487ba3eb">name</a>, <a class="code" href="include_2ubixos_2types_8h.html#73341b7381d39d6e5b80ff9f23379dbd">ino_t</a> * ino,<a class="code" href="structfileDescriptor.html">fileDescriptor</a> *fd) {
<a name="l00208"></a>00208 <span class="keywordtype">char</span> <a class="code" href="structbuf.html">buf</a>[<a class="code" href="ufs_8h.html#9c8466b6111a11195a5cd2478c648e32">DEV_BSIZE</a>];
<a name="l00209"></a>00209 <span class="keyword">struct </span><a class="code" href="structdirent.html">dirent</a> *d;
<a name="l00210"></a>00210 <span class="keywordtype">char</span> *s;
<a name="l00211"></a>00211 <a class="code" href="include_2ubixos_2types_8h.html#87bd983bf349d8b86901f3200d559e8e">ssize_t</a> n;
<a name="l00212"></a>00212
<a name="l00213"></a>00213 fd-><a class="code" href="structfileDescriptor.html#09c5cd0d4979a70b8d7098319cd00b7c">offset</a> = 0;
<a name="l00214"></a>00214 <span class="keywordflow">while</span> ((n = <a class="code" href="ufs_8c.html#03b001870aa568dcdcc44c1dc79a49dd">fsread</a>(*ino, buf, <a class="code" href="ufs_8h.html#9c8466b6111a11195a5cd2478c648e32">DEV_BSIZE</a>,fd)) > 0)
<a name="l00215"></a>00215 <span class="keywordflow">for</span> (s = buf; s < buf + <a class="code" href="ufs_8h.html#9c8466b6111a11195a5cd2478c648e32">DEV_BSIZE</a>;) {
<a name="l00216"></a>00216 d = (<span class="keywordtype">void</span> *)s;
<a name="l00217"></a>00217 <span class="keywordflow">if</span> (!<a class="code" href="lib_2string_8h.html#6f3dcb20ff11ff9db5904c3cfb61a38c">strcmp</a>(name, d-><a class="code" href="structdirent.html#d2e718a8e07b81e1aa9c4a95a25924d6">d_name</a>)) {
<a name="l00218"></a>00218 *ino = d-><a class="code" href="structdirent.html#0aa21d56704896b87f8a39ecba4f3731">d_fileno</a>;
<a name="l00219"></a>00219 <span class="keywordflow">return</span> d-><a class="code" href="structdirent.html#a850909d0a98e07d0ccd6232d28ed133">d_type</a>;
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221 s += d-><a class="code" href="structdirent.html#6ca250ead8b04b71ea787acbd29b6b75">d_reclen</a>;
<a name="l00222"></a>00222 }
<a name="l00223"></a>00223 <span class="comment">//if (n != -1 && ls)</span>
<a name="l00224"></a>00224 <span class="comment">//kprintf("\n");</span>
<a name="l00225"></a>00225 <span class="keywordflow">return</span> 0;
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227
<a name="l00228"></a>00228
<a name="l00229"></a><a class="code" href="ufs_8c.html#8b14c49128395a8745bc83cfcce7b9cf">00229</a> <span class="keyword">static</span> <a class="code" href="include_2ubixos_2types_8h.html#73341b7381d39d6e5b80ff9f23379dbd">ino_t</a> <a class="code" href="ufs_8c.html#8b14c49128395a8745bc83cfcce7b9cf">lookup</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *path,<a class="code" href="structfileDescriptor.html">fileDescriptor</a> *fd) {
<a name="l00230"></a>00230 <span class="keywordtype">char</span> <a class="code" href="pci_8c.html#8f8f80d37794cde9472343e4487ba3eb">name</a>[<a class="code" href="ufs_8h.html#b347d7e5c2fdca2d28e693b2a508d76a">MAXNAMLEN</a> + 1];
<a name="l00231"></a>00231 <span class="keyword">const</span> <span class="keywordtype">char</span> *s;
<a name="l00232"></a>00232 <a class="code" href="include_2ubixos_2types_8h.html#73341b7381d39d6e5b80ff9f23379dbd">ino_t</a> ino;
<a name="l00233"></a>00233 <a class="code" href="include_2ubixos_2types_8h.html#87bd983bf349d8b86901f3200d559e8e">ssize_t</a> n;
<a name="l00234"></a>00234 <span class="keywordtype">int</span> dt;
<a name="l00235"></a>00235
<a name="l00236"></a>00236 ino = <a class="code" href="ufs_8h.html#22c8ea96d09283ed6496347806cc72a0">ROOTINO</a>;
<a name="l00237"></a>00237 dt = <a class="code" href="ufs_8h.html#1dcee67486bc4238096ecb61e2d9ffd1">DT_DIR</a>;
<a name="l00238"></a>00238 name[0] = <span class="charliteral">'/'</span>;
<a name="l00239"></a>00239 name[1] = <span class="charliteral">'\0'</span>;
<a name="l00240"></a>00240 <span class="keywordflow">for</span> (;;) {
<a name="l00241"></a>00241 <span class="keywordflow">if</span> (*path == <span class="charliteral">'/'</span>)
<a name="l00242"></a>00242 path++;
<a name="l00243"></a>00243 <span class="keywordflow">if</span> (!*path)
<a name="l00244"></a>00244 <span class="keywordflow">break</span>;
<a name="l00245"></a>00245 <span class="keywordflow">for</span> (s = path; *s && *s != <span class="charliteral">'/'</span>; s++);
<a name="l00246"></a>00246 <span class="keywordflow">if</span> ((n = s - path) > <a class="code" href="ufs_8h.html#b347d7e5c2fdca2d28e693b2a508d76a">MAXNAMLEN</a>)
<a name="l00247"></a>00247 <span class="keywordflow">return</span> 0;
<a name="l00248"></a>00248 <span class="comment">//ls = *path == '?' && n == 1 && !*s;</span>
<a name="l00249"></a>00249 <a class="code" href="lib_2string_8h.html#e33b18edb618c656b9b795b9fce2316c">memcpy</a>(name, path, n);
<a name="l00250"></a>00250 name[n] = 0;
<a name="l00251"></a>00251 <span class="keywordflow">if</span> (dt != <a class="code" href="ufs_8h.html#1dcee67486bc4238096ecb61e2d9ffd1">DT_DIR</a>) {
<a name="l00252"></a>00252 <a class="code" href="kprint_8h.html#b2761bdf0cca73ad0fb5880895210cd8">kprintf</a>(<span class="stringliteral">"%s: not a directory.\n"</span>, name);
<a name="l00253"></a>00253 <span class="keywordflow">return</span> (0);
<a name="l00254"></a>00254 }
<a name="l00255"></a>00255 <span class="keywordflow">if</span> ((dt = <a class="code" href="ufs_8c.html#ccfc6cc8f916e7f58db4ac350bdc1e9b">fsfind</a>(name, &ino,fd)) <= 0)
<a name="l00256"></a>00256 <span class="keywordflow">break</span>;
<a name="l00257"></a>00257 path = s;
<a name="l00258"></a>00258 }
<a name="l00259"></a>00259
<a name="l00260"></a>00260
<a name="l00261"></a>00261 <span class="keywordflow">return</span> dt == <a class="code" href="ufs_8h.html#9973595cf6775b1b29d7274ab4c0d623">DT_REG</a> ? ino : 0;
<a name="l00262"></a>00262 }
<a name="l00263"></a>00263
<a name="l00264"></a>00264
<a name="l00265"></a><a class="code" href="ufs_8c.html#e5b71ba2291b2d2ef07ece9e0de74a5d">00265</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="ufs_8c.html#e5b71ba2291b2d2ef07ece9e0de74a5d">ufs_openFile</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="structfile.html">file</a>, <a class="code" href="structfileDescriptor.html">fileDescriptor</a> *fd) {
<a name="l00266"></a>00266 <span class="keywordtype">char</span> tmp[2];
<a name="l00267"></a>00267 <span class="keywordtype">int</span> ino = 0;
<a name="l00268"></a>00268 fd->dmadat = (<span class="keyword">struct </span><a class="code" href="structdmadat.html">dmadat</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="structdmadat.html">dmadat</a>));
<a name="l00269"></a>00269 ino = <a class="code" href="ufs_8c.html#8b14c49128395a8745bc83cfcce7b9cf">lookup</a>(file,fd);
<a name="l00270"></a>00270 fd-><a class="code" href="structfileDescriptor.html#09c5cd0d4979a70b8d7098319cd00b7c">offset</a> = 0x0;
<a name="l00271"></a>00271 fd->ino = ino;
<a name="l00272"></a>00272 <span class="keywordflow">if</span> (ino == 0x0) {
<a name="l00273"></a>00273 <span class="keywordflow">return</span>(-1);
<a name="l00274"></a>00274 }
<a name="l00275"></a>00275
<a name="l00276"></a>00276 <span class="comment">/* Quick Hack for file size */</span>
<a name="l00277"></a>00277 <a class="code" href="ufs_8c.html#03b001870aa568dcdcc44c1dc79a49dd">fsread</a>(fd->ino,&tmp,1,fd);
<a name="l00278"></a>00278 fd-><a class="code" href="structfileDescriptor.html#09c5cd0d4979a70b8d7098319cd00b7c">offset</a> = 0;
<a name="l00279"></a>00279 <span class="comment">/* Return */</span>
<a name="l00280"></a>00280 fd->perms = 0x1;
<a name="l00281"></a>00281 <span class="keywordflow">return</span>(0<a class="code" href="ap-boot_8S.html#1a3ac2137e21f6f0d400f1996914dd19">x1</a>);
<a name="l00282"></a>00282 }
<a name="l00283"></a>00283
<a name="l00284"></a><a class="code" href="ufs_8c.html#9272216384babc589471d4a8e538d372">00284</a> <span class="keywordtype">int</span> <a class="code" href="ufs_8c.html#9272216384babc589471d4a8e538d372">ufs_readFile</a>(<a class="code" href="structfileDescriptor.html">fileDescriptor</a> *fd,<span class="keywordtype">char</span> *data,<a class="code" href="include_2ubixos_2types_8h.html#5847ea0262a5aa61eee48cbe95544a78">uInt32</a> offset,<span class="keywordtype">long</span> size) {
<a name="l00285"></a>00285 <a class="code" href="ufs_8c.html#03b001870aa568dcdcc44c1dc79a49dd">fsread</a>(fd->ino,data,size,fd);
<a name="l00286"></a>00286 <span class="keywordflow">return</span>(0x0);
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288
<a name="l00289"></a><a class="code" href="ufs_8c.html#c7d4e2f2c573b3657d8a7680131ba068">00289</a> <span class="keywordtype">int</span> <a class="code" href="ufs_8c.html#c7d4e2f2c573b3657d8a7680131ba068">ufs_writeFile</a>(<a class="code" href="structfileDescriptor.html">fileDescriptor</a> *fd, <span class="keywordtype">char</span> *data,<a class="code" href="include_2ubixos_2types_8h.html#5847ea0262a5aa61eee48cbe95544a78">uInt32</a> offset,<span class="keywordtype">long</span> size) {
<a name="l00290"></a>00290 <a class="code" href="kprint_8h.html#b2761bdf0cca73ad0fb5880895210cd8">kprintf</a>(<span class="stringliteral">"Writing :)\n"</span>);
<a name="l00291"></a>00291 <span class="keywordflow">return</span>(0x0);
<a name="l00292"></a>00292 }
<a name="l00293"></a>00293
<a name="l00294"></a>00294 <span class="comment">/*****************************************************************************************</span>
<a name="l00295"></a>00295 <span class="comment"></span>
<a name="l00296"></a>00296 <span class="comment">Function: int ufs_initialize()</span>
<a name="l00297"></a>00297 <span class="comment"></span>
<a name="l00298"></a>00298 <span class="comment">Description: This will initialize a mount point it loads the BAT and Caches the rootDir</span>
<a name="l00299"></a>00299 <span class="comment"></span>
<a name="l00300"></a>00300 <span class="comment">Notes:</span>
<a name="l00301"></a>00301 <span class="comment"></span>
<a name="l00302"></a>00302 <span class="comment">*****************************************************************************************/</span>
<a name="l00303"></a><a class="code" href="ufs_8c.html#c2f26ec05df38049821476d41aeb1038">00303</a> <span class="keywordtype">int</span> <a class="code" href="ufs_8h.html#b72f6c6236410bf9a029e7bc810eb609">ufs_initialize</a>(<span class="keyword">struct</span> <a class="code" href="structvfs__mountPoint.html">vfs_mountPoint</a> *mp) {
<a name="l00304"></a>00304 <span class="comment">/* Return */</span>
<a name="l00305"></a>00305 <span class="keywordflow">return</span>(0<a class="code" href="ap-boot_8S.html#1a3ac2137e21f6f0d400f1996914dd19">x1</a>);
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307
<a name="l00308"></a><a class="code" href="ufs_8c.html#349e4b7ceea770cd630e0297b693d59e">00308</a> <span class="keywordtype">int</span> <a class="code" href="ufs_8h.html#349e4b7ceea770cd630e0297b693d59e">ufs_init</a>() {
<a name="l00309"></a>00309 <span class="comment">/* Build our ufs struct */</span>
<a name="l00310"></a>00310 <span class="keyword">struct </span><a class="code" href="structfileSystem.html">fileSystem</a> ufs =
<a name="l00311"></a>00311 {<a class="code" href="def_8h.html#070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, <span class="comment">/* prev */</span>
<a name="l00312"></a>00312 <a class="code" href="def_8h.html#070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, <span class="comment">/* next */</span>
<a name="l00313"></a>00313 (<span class="keywordtype">void</span> *)<a class="code" href="ufs_8h.html#b72f6c6236410bf9a029e7bc810eb609">ufs_initialize</a>, <span class="comment">/* vfsInitFS */</span>
<a name="l00314"></a>00314 (<span class="keywordtype">void</span> *)<a class="code" href="ufs_8c.html#9272216384babc589471d4a8e538d372">ufs_readFile</a>, <span class="comment">/* vfsRead */</span>
<a name="l00315"></a>00315 (<span class="keywordtype">void</span> *)<a class="code" href="ufs_8c.html#c7d4e2f2c573b3657d8a7680131ba068">ufs_writeFile</a>, <span class="comment">/* vfsWrite */</span>
<a name="l00316"></a>00316 (<span class="keywordtype">void</span> *)<a class="code" href="ufs_8c.html#e5b71ba2291b2d2ef07ece9e0de74a5d">ufs_openFile</a>, <span class="comment">/* vfsOpenFile */</span>
<a name="l00317"></a>00317 NULL, <span class="comment">/* vfsUnlink */</span>
<a name="l00318"></a>00318 NULL, <span class="comment">/* vfsMakeDir */</span>
<a name="l00319"></a>00319 NULL, <span class="comment">/* vfsRemDir */</span>
<a name="l00320"></a>00320 NULL, <span class="comment">/* vfsSync */</span>
<a name="l00321"></a>00321 0xAA, <span class="comment">/* vfsType */</span>
<a name="l00322"></a>00322 }; <span class="comment">/* UFS */</span>
<a name="l00323"></a>00323
<a name="l00324"></a>00324 <span class="keywordflow">if</span> (<a class="code" href="include_2vfs_2vfs_8h.html#8652b1ccbcf7d2a872c5781640f7d59a">vfsRegisterFS</a>(ufs) != 0x0) {
<a name="l00325"></a>00325 <a class="code" href="kpanic_8h.html#db9a182aa071791a306163d50d653deb">kpanic</a>(<span class="stringliteral">"Unable To Enable UFS"</span>);
<a name="l00326"></a>00326 <span class="keywordflow">return</span>(0<a class="code" href="ap-boot_8S.html#1a3ac2137e21f6f0d400f1996914dd19">x1</a>);
<a name="l00327"></a>00327 }
<a name="l00328"></a>00328 <span class="comment">//dmadat = (struct dmadat *)kmalloc(sizeof(struct dmadat)); </span>
<a name="l00329"></a>00329 <span class="comment">/* Return */</span>
<a name="l00330"></a>00330 <span class="keywordflow">return</span>(0x0);
<a name="l00331"></a>00331 }
<a name="l00332"></a>00332
<a name="l00333"></a>00333 <span class="comment">/***</span>
<a name="l00334"></a>00334 <span class="comment"> END</span>
<a name="l00335"></a>00335 <span class="comment"> ***/</span>
<a name="l00336"></a>00336
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