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pcsc-lite-doc-1.5.5-4.fc13.noarch.rpm

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<h1>sys_unix.c</h1><a href="sys__unix_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"> * This handles abstract system level calls.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * MUSCLE SmartCard Development ( http://www.linuxnet.com )</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Copyright (C) 1999</span>
<a name="l00007"></a>00007 <span class="comment"> *  David Corcoran &lt;corcoran@linuxnet.com&gt;</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * $Id: sys_unix.c 3259 2009-01-02 14:32:44Z rousseau $</span>
<a name="l00010"></a>00010 <span class="comment"> */</span>
<a name="l00011"></a>00011 
<a name="l00017"></a>00017 <span class="preprocessor">#include &quot;config.h&quot;</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include &lt;sys/types.h&gt;</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include &lt;sys/mman.h&gt;</span>
<a name="l00020"></a>00020 <span class="preprocessor">#include &lt;sys/stat.h&gt;</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include &lt;sys/wait.h&gt;</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include &lt;sys/time.h&gt;</span>
<a name="l00023"></a>00023 <span class="preprocessor">#include &lt;sys/file.h&gt;</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include &lt;fcntl.h&gt;</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include &lt;errno.h&gt;</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include &lt;unistd.h&gt;</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include &lt;string.h&gt;</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include &lt;signal.h&gt;</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include &lt;time.h&gt;</span>
<a name="l00032"></a>00032 
<a name="l00033"></a>00033 <span class="preprocessor">#include &quot;misc.h&quot;</span>
<a name="l00034"></a>00034 <span class="preprocessor">#include &quot;<a class="code" href="sys__generic_8h.html" title="This handles abstract system level calls.">sys_generic.h</a>&quot;</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include &quot;<a class="code" href="debug_8h.html" title="This handles debugging.">debug.h</a>&quot;</span>
<a name="l00036"></a>00036 
<a name="l00043"></a><a class="code" href="sys__unix_8c.html#a19e3ec9c17b0a379ff7b0b14fce101b5">00043</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#ad156e3731bd5de323088b202e9cb0188" title="Make system wide initialization.">SYS_Initialize</a>(<span class="keywordtype">void</span>)
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045     <span class="comment">/*</span>
<a name="l00046"></a>00046 <span class="comment">     * Nothing special</span>
<a name="l00047"></a>00047 <span class="comment">     */</span>
<a name="l00048"></a>00048     <span class="keywordflow">return</span> 0;
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050 
<a name="l00061"></a><a class="code" href="sys__unix_8c.html#aaa8a8aa9243f8820fa63e1bff44c84dd">00061</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#acd4cce2186a4f5261b404db165193241" title="Attempts to create a directory with some permissions.">SYS_Mkdir</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *path, <span class="keywordtype">int</span> perms)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063     <span class="keywordflow">return</span> mkdir(path, perms);
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065 
<a name="l00071"></a><a class="code" href="sys__unix_8c.html#a048c2f2436f5e0d7f4ee6129fba68e79">00071</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#ac1fa780e658b5a18c5a75603793cb982" title="Gets the running process&amp;#39;s ID.">SYS_GetPID</a>(<span class="keywordtype">void</span>)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073     <span class="keywordflow">return</span> getpid();
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 
<a name="l00081"></a><a class="code" href="sys__unix_8c.html#ac5d5594ed932c84d8dc62c404d2bde09">00081</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#abbd906a9a16166248e32862f67fc49cd" title="Makes the current process sleep for some seconds.">SYS_Sleep</a>(<span class="keywordtype">int</span> iTimeVal)
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="preprocessor">#ifdef HAVE_NANOSLEEP</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span>    <span class="keyword">struct </span>timespec mrqtp;
<a name="l00085"></a>00085     mrqtp.tv_sec = iTimeVal;
<a name="l00086"></a>00086     mrqtp.tv_nsec = 0;
<a name="l00087"></a>00087 
<a name="l00088"></a>00088     <span class="keywordflow">return</span> nanosleep(&amp;mrqtp, NULL);
<a name="l00089"></a>00089 <span class="preprocessor">#else</span>
<a name="l00090"></a>00090 <span class="preprocessor"></span>    <span class="keywordflow">return</span> sleep(iTimeVal);
<a name="l00091"></a>00091 <span class="preprocessor">#endif</span>
<a name="l00092"></a>00092 <span class="preprocessor"></span>}
<a name="l00093"></a>00093 
<a name="l00099"></a><a class="code" href="sys__unix_8c.html#af101ba8774c74acd78f38d631b7d7564">00099</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#a910a2c6f5b5a4eadf3213bdfdd0b9bb1" title="Makes the current process sleep for some microseconds.">SYS_USleep</a>(<span class="keywordtype">int</span> iTimeVal)
<a name="l00100"></a>00100 {
<a name="l00101"></a>00101 <span class="preprocessor">#ifdef HAVE_NANOSLEEP</span>
<a name="l00102"></a>00102 <span class="preprocessor"></span>    <span class="keyword">struct </span>timespec mrqtp;
<a name="l00103"></a>00103     mrqtp.tv_sec = iTimeVal/1000000;
<a name="l00104"></a>00104     mrqtp.tv_nsec = (iTimeVal - (mrqtp.tv_sec * 1000000)) * 1000;
<a name="l00105"></a>00105 
<a name="l00106"></a>00106     <span class="keywordflow">return</span> nanosleep(&amp;mrqtp, NULL);
<a name="l00107"></a>00107 <span class="preprocessor">#else</span>
<a name="l00108"></a>00108 <span class="preprocessor"></span>    <span class="keyword">struct </span>timeval tv;
<a name="l00109"></a>00109     tv.tv_sec  = iTimeVal/1000000;
<a name="l00110"></a>00110     tv.tv_usec = iTimeVal - (tv.tv_sec * 1000000);
<a name="l00111"></a>00111     <span class="keywordflow">return</span> select(0, NULL, NULL, NULL, &amp;tv);
<a name="l00112"></a>00112 <span class="preprocessor">#endif</span>
<a name="l00113"></a>00113 <span class="preprocessor"></span>}
<a name="l00114"></a>00114 
<a name="l00127"></a><a class="code" href="sys__unix_8c.html#aabf578a1fa970bfd0920706a9b5b0fe8">00127</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#a83df5dae709347018a9183e6c4cb7207" title="Opens/creates a file.">SYS_OpenFile</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *pcFile, <span class="keywordtype">int</span> flags, <span class="keywordtype">int</span> mode)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129     <span class="keywordtype">int</span> fd = open(pcFile, flags, mode);
<a name="l00130"></a>00130     fcntl(fd, F_SETFD, FD_CLOEXEC);
<a name="l00131"></a>00131     <span class="keywordflow">return</span> fd;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 
<a name="l00143"></a><a class="code" href="sys__unix_8c.html#a88369bb24acf2611f712b9c67a78e6d3">00143</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#af10fc153fdf365c3a3001635c065a1c6" title="Opens/creates a file.">SYS_CloseFile</a>(<span class="keywordtype">int</span> iHandle)
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145     <span class="keywordflow">return</span> close(iHandle);
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147 
<a name="l00157"></a><a class="code" href="sys__unix_8c.html#a8598711ecee3b7dbbe3cd33d24751839">00157</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#af473e9d9a973ce499cdef8ffb87913b2" title="Removes a file.">SYS_RemoveFile</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *pcFile)
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159     <span class="keywordflow">return</span> <span class="keyword">remove</span>(pcFile);
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161 
<a name="l00162"></a>00162 INTERNAL <span class="keywordtype">int</span> SYS_Chmod(<span class="keyword">const</span> <span class="keywordtype">char</span> *path, <span class="keywordtype">int</span> mode)
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164     <span class="keywordflow">return</span> chmod(path, mode);
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166 
<a name="l00167"></a>00167 INTERNAL <span class="keywordtype">int</span> SYS_Chdir(<span class="keyword">const</span> <span class="keywordtype">char</span> *path)
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169     <span class="keywordflow">return</span> chdir(path);
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171 
<a name="l00172"></a>00172 INTERNAL <span class="keywordtype">int</span> SYS_GetUID(<span class="keywordtype">void</span>)
<a name="l00173"></a>00173 {
<a name="l00174"></a>00174     <span class="keywordflow">return</span> getuid();
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176 
<a name="l00177"></a>00177 INTERNAL <span class="keywordtype">int</span> SYS_GetGID(<span class="keywordtype">void</span>)
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179     <span class="keywordflow">return</span> getgid();
<a name="l00180"></a>00180 }
<a name="l00181"></a>00181 
<a name="l00182"></a>00182 INTERNAL <span class="keywordtype">int</span> SYS_SeekFile(<span class="keywordtype">int</span> iHandle, <span class="keywordtype">int</span> iSeekLength)
<a name="l00183"></a>00183 {
<a name="l00184"></a>00184     <span class="keywordtype">int</span> iOffset;
<a name="l00185"></a>00185     iOffset = lseek(iHandle, iSeekLength, SEEK_SET);
<a name="l00186"></a>00186     <span class="keywordflow">return</span> iOffset;
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188 
<a name="l00189"></a>00189 INTERNAL <span class="keywordtype">int</span> SYS_ReadFile(<span class="keywordtype">int</span> iHandle, <span class="keywordtype">char</span> *pcBuffer, <span class="keywordtype">int</span> iLength)
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191     <span class="keywordflow">return</span> read(iHandle, pcBuffer, iLength);
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193 
<a name="l00194"></a>00194 INTERNAL <span class="keywordtype">int</span> SYS_WriteFile(<span class="keywordtype">int</span> iHandle, <span class="keyword">const</span> <span class="keywordtype">char</span> *pcBuffer, <span class="keywordtype">int</span> iLength)
<a name="l00195"></a>00195 {
<a name="l00196"></a>00196     <span class="keywordflow">return</span> write(iHandle, pcBuffer, iLength);
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198 
<a name="l00207"></a><a class="code" href="sys__unix_8c.html#a54df036495282ead0e14788b5e14f451">00207</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#a85ac6c80e5212b00bb15a8481657e983" title="Gets the memory page size.">SYS_GetPageSize</a>(<span class="keywordtype">void</span>)
<a name="l00208"></a>00208 {
<a name="l00209"></a>00209     <span class="keyword">static</span> <span class="keywordtype">int</span> size = -1;
<a name="l00210"></a>00210 
<a name="l00211"></a>00211     <span class="comment">/* we use a cache to avoid a system call and improve perfs */</span>
<a name="l00212"></a>00212     <span class="keywordflow">if</span> (-1 == size)
<a name="l00213"></a>00213         size = getpagesize();
<a name="l00214"></a>00214     <span class="keywordflow">return</span> size;
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216 
<a name="l00227"></a><a class="code" href="sys__unix_8c.html#ac2e0ea856a110fff201c8f315d6c89e3">00227</a> INTERNAL <span class="keywordtype">void</span> *<a class="code" href="sys__generic_8h.html#a283734774916d1b4f11c6da3ec57d78a" title="Map the file iFid in memory for reading and writing.">SYS_MemoryMap</a>(<span class="keywordtype">int</span> iSize, <span class="keywordtype">int</span> iFid, <span class="keywordtype">int</span> iOffset)
<a name="l00228"></a>00228 {
<a name="l00229"></a>00229 
<a name="l00230"></a>00230     <span class="keywordtype">void</span> *vAddress;
<a name="l00231"></a>00231 
<a name="l00232"></a>00232     vAddress = 0;
<a name="l00233"></a>00233     vAddress = mmap(0, iSize, PROT_READ | PROT_WRITE,
<a name="l00234"></a>00234         MAP_SHARED, iFid, iOffset);
<a name="l00235"></a>00235 
<a name="l00236"></a>00236     <span class="comment">/*</span>
<a name="l00237"></a>00237 <span class="comment">     * Here are some common error types: switch( errno ) { case EINVAL:</span>
<a name="l00238"></a>00238 <span class="comment">     * printf(&quot;EINVAL&quot;); case EBADF: printf(&quot;EBADF&quot;); break; case EACCES:</span>
<a name="l00239"></a>00239 <span class="comment">     * printf(&quot;EACCES&quot;); break; case EAGAIN: printf(&quot;EAGAIN&quot;); break; case</span>
<a name="l00240"></a>00240 <span class="comment">     * ENOMEM: printf(&quot;ENOMEM&quot;); break; }</span>
<a name="l00241"></a>00241 <span class="comment">     */</span>
<a name="l00242"></a>00242 
<a name="l00243"></a>00243     <span class="keywordflow">return</span> vAddress;
<a name="l00244"></a>00244 }
<a name="l00245"></a>00245 
<a name="l00255"></a><a class="code" href="sys__unix_8c.html#af39e19e5beb78a2529f75d044609217a">00255</a> <span class="comment">/*@null@*/</span> INTERNAL <span class="keywordtype">void</span> *<a class="code" href="sys__generic_8h.html#aec318ae5b72ec6d2ead5009940d6e79d" title="Map the file iFid in memory only for reading.">SYS_PublicMemoryMap</a>(<span class="keywordtype">int</span> iSize, <span class="keywordtype">int</span> iFid, <span class="keywordtype">int</span> iOffset)
<a name="l00256"></a>00256 {
<a name="l00257"></a>00257 
<a name="l00258"></a>00258     <span class="keywordtype">void</span> *vAddress;
<a name="l00259"></a>00259 
<a name="l00260"></a>00260     vAddress = 0;
<a name="l00261"></a>00261     vAddress = mmap(0, iSize, PROT_READ, MAP_SHARED, iFid, iOffset);
<a name="l00262"></a>00262     <span class="keywordflow">if</span> (vAddress == (<span class="keywordtype">void</span>*)-1) <span class="comment">/* mmap returns -1 on error */</span>
<a name="l00263"></a>00263     {
<a name="l00264"></a>00264         Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">&quot;SYS_PublicMemoryMap() failed: %s&quot;</span>,
<a name="l00265"></a>00265             strerror(errno));
<a name="l00266"></a>00266         vAddress = NULL;
<a name="l00267"></a>00267     }
<a name="l00268"></a>00268 
<a name="l00269"></a>00269     <span class="keywordflow">return</span> vAddress;
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271 
<a name="l00278"></a><a class="code" href="sys__unix_8c.html#a464b8d0b052a6e9fb3aa898b5d644619">00278</a> INTERNAL <span class="keywordtype">void</span> <a class="code" href="sys__generic_8h.html#ad41a56d6ccc76f970fbb33179d694410" title="Unmap a memory segment.">SYS_PublicMemoryUnmap</a>(<span class="keywordtype">void</span> * ptr, <span class="keywordtype">int</span> iSize)
<a name="l00279"></a>00279 {
<a name="l00280"></a>00280     (void)munmap(ptr, iSize);
<a name="l00281"></a>00281 }
<a name="l00282"></a>00282 
<a name="l00293"></a><a class="code" href="sys__unix_8c.html#a3eff77be19cd07b0bb7dfd0ccc2f292b">00293</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#abc986c02619ec34a285509c60781b1b9" title="Writes the changes made in a memory map to the disk mapped file.">SYS_MMapSynchronize</a>(<span class="keywordtype">void</span> *begin, <span class="keywordtype">int</span> length)
<a name="l00294"></a>00294 {
<a name="l00295"></a>00295     <span class="keywordtype">int</span> flags = 0;
<a name="l00296"></a>00296 
<a name="l00297"></a>00297 <span class="preprocessor">#ifdef MS_INVALIDATE</span>
<a name="l00298"></a>00298 <span class="preprocessor"></span>    flags |= MS_INVALIDATE;
<a name="l00299"></a>00299 <span class="preprocessor">#endif</span>
<a name="l00300"></a>00300 <span class="preprocessor"></span>    <span class="keywordflow">return</span> msync(begin, length, MS_SYNC | flags);
<a name="l00301"></a>00301 }
<a name="l00302"></a>00302 
<a name="l00303"></a>00303 INTERNAL <span class="keywordtype">int</span> SYS_Fork(<span class="keywordtype">void</span>)
<a name="l00304"></a>00304 {
<a name="l00305"></a>00305     <span class="keywordflow">return</span> fork();
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307 
<a name="l00318"></a><a class="code" href="sys__unix_8c.html#af76f44e90cad6eb8641805e297085d5b">00318</a> INTERNAL <span class="keywordtype">int</span> <a class="code" href="sys__generic_8h.html#a7e289250eb322da8a2b160283a726f0c" title="put the process to run in the background.">SYS_Daemon</a>(<span class="keywordtype">int</span> nochdir, <span class="keywordtype">int</span> noclose)
<a name="l00319"></a>00319 {
<a name="l00320"></a>00320 <span class="preprocessor">#ifdef HAVE_DAEMON</span>
<a name="l00321"></a>00321 <span class="preprocessor"></span>    <span class="keywordflow">return</span> daemon(nochdir, noclose);
<a name="l00322"></a>00322 <span class="preprocessor">#else</span>
<a name="l00323"></a>00323 <span class="preprocessor"></span>
<a name="l00324"></a>00324 <span class="preprocessor">#if defined(__SVR4) &amp;&amp; defined(__sun)</span>
<a name="l00325"></a>00325 <span class="preprocessor"></span>    pid_t pid;
<a name="l00326"></a>00326 
<a name="l00327"></a>00327     pid = SYS_Fork();
<a name="l00328"></a>00328     <span class="keywordflow">if</span> (-1 == pid)
<a name="l00329"></a>00329     {
<a name="l00330"></a>00330         Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">&quot;main: SYS_Fork() failed: %s&quot;</span>, strerror(errno));
<a name="l00331"></a>00331         <span class="keywordflow">return</span> -1;
<a name="l00332"></a>00332     }
<a name="l00333"></a>00333     <span class="keywordflow">else</span>
<a name="l00334"></a>00334     {
<a name="l00335"></a>00335         <span class="keywordflow">if</span> (pid != 0)
<a name="l00336"></a>00336             <span class="comment">/* the father exits */</span>
<a name="l00337"></a>00337             exit(0);
<a name="l00338"></a>00338     }
<a name="l00339"></a>00339 
<a name="l00340"></a>00340     setsid();
<a name="l00341"></a>00341 
<a name="l00342"></a>00342     pid = SYS_Fork();
<a name="l00343"></a>00343     <span class="keywordflow">if</span> (-1 == pid)
<a name="l00344"></a>00344     {
<a name="l00345"></a>00345         Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">&quot;main: SYS_Fork() failed: %s&quot;</span>, strerror(errno));
<a name="l00346"></a>00346         exit(1);
<a name="l00347"></a>00347     }
<a name="l00348"></a>00348     <span class="keywordflow">else</span>
<a name="l00349"></a>00349     {
<a name="l00350"></a>00350         <span class="keywordflow">if</span> (pid != 0)
<a name="l00351"></a>00351             <span class="comment">/* the father exits */</span>
<a name="l00352"></a>00352             exit(0);
<a name="l00353"></a>00353     }
<a name="l00354"></a>00354 <span class="preprocessor">#else</span>
<a name="l00355"></a>00355 <span class="preprocessor"></span>    <span class="keywordflow">switch</span> (SYS_Fork())
<a name="l00356"></a>00356     {
<a name="l00357"></a>00357     <span class="keywordflow">case</span> -1:
<a name="l00358"></a>00358         <span class="keywordflow">return</span> (-1);
<a name="l00359"></a>00359     <span class="keywordflow">case</span> 0:
<a name="l00360"></a>00360         <span class="keywordflow">break</span>;
<a name="l00361"></a>00361     <span class="keywordflow">default</span>:
<a name="l00362"></a>00362         <span class="keywordflow">return</span> (0);
<a name="l00363"></a>00363     }
<a name="l00364"></a>00364 <span class="preprocessor">#endif</span>
<a name="l00365"></a>00365 <span class="preprocessor"></span>
<a name="l00366"></a>00366     <span class="keywordflow">if</span> (!noclose) {
<a name="l00367"></a>00367         <span class="keywordflow">if</span> (<a class="code" href="sys__generic_8h.html#af10fc153fdf365c3a3001635c065a1c6" title="Opens/creates a file.">SYS_CloseFile</a>(0))
<a name="l00368"></a>00368             Log2(PCSC_LOG_ERROR, <span class="stringliteral">&quot;SYS_CloseFile(0) failed: %s&quot;</span>,
<a name="l00369"></a>00369                 strerror(errno));
<a name="l00370"></a>00370 
<a name="l00371"></a>00371         <span class="keywordflow">if</span> (<a class="code" href="sys__generic_8h.html#af10fc153fdf365c3a3001635c065a1c6" title="Opens/creates a file.">SYS_CloseFile</a>(1))
<a name="l00372"></a>00372             Log2(PCSC_LOG_ERROR, <span class="stringliteral">&quot;SYS_CloseFile(1) failed: %s&quot;</span>,
<a name="l00373"></a>00373                 strerror(errno));
<a name="l00374"></a>00374 
<a name="l00375"></a>00375         <span class="keywordflow">if</span> (<a class="code" href="sys__generic_8h.html#af10fc153fdf365c3a3001635c065a1c6" title="Opens/creates a file.">SYS_CloseFile</a>(2))
<a name="l00376"></a>00376             Log2(PCSC_LOG_ERROR, <span class="stringliteral">&quot;SYS_CloseFile(2) failed: %s&quot;</span>,
<a name="l00377"></a>00377                 strerror(errno));
<a name="l00378"></a>00378     }
<a name="l00379"></a>00379     <span class="keywordflow">if</span> (!nochdir) {
<a name="l00380"></a>00380         <span class="keywordflow">if</span> (SYS_Chdir(<span class="stringliteral">&quot;/&quot;</span>))
<a name="l00381"></a>00381             Log2(PCSC_LOG_ERROR, <span class="stringliteral">&quot;SYS_Chdir() failed: %s&quot;</span>, strerror(errno));
<a name="l00382"></a>00382     }
<a name="l00383"></a>00383     <span class="keywordflow">return</span> 0;
<a name="l00384"></a>00384 <span class="preprocessor">#endif</span>
<a name="l00385"></a>00385 <span class="preprocessor"></span>}
<a name="l00386"></a>00386 
<a name="l00387"></a>00387 INTERNAL <span class="keywordtype">int</span> SYS_Stat(<span class="keyword">const</span> <span class="keywordtype">char</span> *pcFile, <span class="keyword">struct</span> stat *psStatus)
<a name="l00388"></a>00388 {
<a name="l00389"></a>00389     <span class="keywordflow">return</span> stat(pcFile, psStatus);
<a name="l00390"></a>00390 }
<a name="l00391"></a>00391 
<a name="l00392"></a>00392 INTERNAL <span class="keywordtype">int</span> SYS_RandomInt(<span class="keywordtype">int</span> fStart, <span class="keywordtype">int</span> fEnd)
<a name="l00393"></a>00393 {
<a name="l00394"></a>00394     <span class="keyword">static</span> <span class="keywordtype">int</span> iInitialized = 0;
<a name="l00395"></a>00395     <span class="keywordtype">int</span> iRandNum = 0;
<a name="l00396"></a>00396 
<a name="l00397"></a>00397     <span class="keywordflow">if</span> (0 == iInitialized)
<a name="l00398"></a>00398     {
<a name="l00399"></a>00399         srand(SYS_GetSeed());
<a name="l00400"></a>00400         iInitialized = 1;
<a name="l00401"></a>00401     }
<a name="l00402"></a>00402 
<a name="l00403"></a>00403     iRandNum = ((rand()+0.0)/RAND_MAX * (fEnd - fStart)) + fStart;
<a name="l00404"></a>00404 
<a name="l00405"></a>00405     <span class="keywordflow">return</span> iRandNum;
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407 
<a name="l00408"></a>00408 INTERNAL <span class="keywordtype">int</span> SYS_GetSeed(<span class="keywordtype">void</span>)
<a name="l00409"></a>00409 {
<a name="l00410"></a>00410     <span class="keyword">struct </span>timeval tv;
<a name="l00411"></a>00411     <span class="keyword">struct </span>timezone tz;
<a name="l00412"></a>00412     <span class="keywordtype">long</span> myseed = 0;
<a name="l00413"></a>00413 
<a name="l00414"></a>00414     tz.tz_minuteswest = 0;
<a name="l00415"></a>00415     tz.tz_dsttime = 0;
<a name="l00416"></a>00416     <span class="keywordflow">if</span> (gettimeofday(&amp;tv, &amp;tz) == 0)
<a name="l00417"></a>00417     {
<a name="l00418"></a>00418         myseed = tv.tv_usec;
<a name="l00419"></a>00419     } <span class="keywordflow">else</span>
<a name="l00420"></a>00420     {
<a name="l00421"></a>00421         myseed = (long) time(NULL);
<a name="l00422"></a>00422     }
<a name="l00423"></a>00423     <span class="keywordflow">return</span> myseed;
<a name="l00424"></a>00424 }
<a name="l00425"></a>00425 
<a name="l00426"></a>00426 INTERNAL <span class="keywordtype">void</span> SYS_Exit(<span class="keywordtype">int</span> iRetVal)
<a name="l00427"></a>00427 {
<a name="l00428"></a>00428     _exit(iRetVal);
<a name="l00429"></a>00429 }
<a name="l00430"></a>00430 
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