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<li class="navelem"><a class="el" href="dir_7a4553ee0c3b13d0e595a5d1659110a6.html">src</a> </li>
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<a href="utils_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"> * MUSCLE SmartCard Development ( http://www.linuxnet.com )</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2006-2009</span>
<a name="l00005"></a>00005 <span class="comment"> * Ludovic Rousseau <ludovic.rousseau@free.fr></span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * $Id: utils.c 5674 2011-03-26 19:53:47Z rousseau $</span>
<a name="l00008"></a>00008 <span class="comment"> */</span>
<a name="l00009"></a>00009
<a name="l00015"></a>00015 <span class="preprocessor">#include <stdio.h></span>
<a name="l00016"></a>00016 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <unistd.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <errno.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <string.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <signal.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <dirent.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <fcntl.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <pthread.h></span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#include "config.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="debuglog_8h.html" title="This handles debugging.">debuglog.h</a>"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "utils.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="pcscd_8h.html" title="This keeps a list of defines for pcsc-lite.">pcscd.h</a>"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="sys__generic_8h.html" title="This handles abstract system level calls.">sys_generic.h</a>"</span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 pid_t GetDaemonPid(<span class="keywordtype">void</span>)
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034 <span class="keywordtype">int</span> fd;
<a name="l00035"></a>00035 pid_t pid;
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="comment">/* pids are only 15 bits but 4294967296</span>
<a name="l00038"></a>00038 <span class="comment"> * (32 bits in case of a new system use it) is on 10 bytes</span>
<a name="l00039"></a>00039 <span class="comment"> */</span>
<a name="l00040"></a>00040 fd = open(PCSCLITE_RUN_PID, O_RDONLY);
<a name="l00041"></a>00041 <span class="keywordflow">if</span> (fd >= 0)
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <span class="keywordtype">char</span> pid_ascii[PID_ASCII_SIZE];
<a name="l00044"></a>00044
<a name="l00045"></a>00045 (void)read(fd, pid_ascii, PID_ASCII_SIZE);
<a name="l00046"></a>00046 (void)close(fd);
<a name="l00047"></a>00047
<a name="l00048"></a>00048 pid = atoi(pid_ascii);
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050 <span class="keywordflow">else</span>
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 Log2(PCSC_LOG_CRITICAL, <span class="stringliteral">"Can't open "</span> PCSCLITE_RUN_PID <span class="stringliteral">": %s"</span>,
<a name="l00053"></a>00053 strerror(errno));
<a name="l00054"></a>00054 <span class="keywordflow">return</span> -1;
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keywordflow">return</span> pid;
<a name="l00058"></a>00058 } <span class="comment">/* GetDaemonPid */</span>
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keywordtype">int</span> SendHotplugSignal(<span class="keywordtype">void</span>)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 pid_t pid;
<a name="l00063"></a>00063
<a name="l00064"></a>00064 pid = GetDaemonPid();
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="keywordflow">if</span> (pid != -1)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 Log2(PCSC_LOG_INFO, <span class="stringliteral">"Send hotplug signal to pcscd (pid=%d)"</span>, pid);
<a name="l00069"></a>00069 <span class="keywordflow">if</span> (kill(pid, SIGUSR1) < 0)
<a name="l00070"></a>00070 {
<a name="l00071"></a>00071 Log3(PCSC_LOG_CRITICAL, <span class="stringliteral">"Can't signal pcscd (pid=%d): %s"</span>,
<a name="l00072"></a>00072 pid, strerror(errno));
<a name="l00073"></a>00073 <span class="keywordflow">return</span> EXIT_FAILURE ;
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 (void)<a class="code" href="sys__generic_8h.html#abbd906a9a16166248e32862f67fc49cd" title="Makes the current process sleep for some seconds.">SYS_Sleep</a>(1);
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keywordflow">return</span> EXIT_SUCCESS;
<a name="l00079"></a>00079 } <span class="comment">/* SendHotplugSignal */</span>
<a name="l00080"></a>00080
<a name="l00088"></a><a class="code" href="utils_8c.html#a6c89a6b233096b6a80880c82886f380b">00088</a> <span class="preprocessor">#define OPENCT_FILE "/var/run/openct/status"</span>
<a name="l00089"></a>00089 <span class="preprocessor"></span><span class="keywordtype">int</span> CheckForOpenCT(<span class="keywordtype">void</span>)
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 <span class="keyword">struct </span>stat buf;
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keywordflow">if</span> (0 == stat(<a class="code" href="utils_8c.html#a6c89a6b233096b6a80880c82886f380b" title="Check is OpenCT is running and display a critical message if it is.">OPENCT_FILE</a>, &buf))
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095 Log1(PCSC_LOG_CRITICAL, <span class="stringliteral">"File "</span> <a class="code" href="utils_8c.html#a6c89a6b233096b6a80880c82886f380b" title="Check is OpenCT is running and display a critical message if it is.">OPENCT_FILE</a> <span class="stringliteral">" found. Remove OpenCT and try again"</span>);
<a name="l00096"></a>00096 <span class="keywordflow">return</span> 1;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="keywordflow">return</span> 0;
<a name="l00100"></a>00100 } <span class="comment">/* CheckForOpenCT */</span>
<a name="l00101"></a>00101
<a name="l00106"></a><a class="code" href="utils_8c.html#a470f4ac4abe231a7b3346be4fe455912">00106</a> <span class="keywordtype">long</span> <span class="keywordtype">int</span> <a class="code" href="utils_8c.html#a470f4ac4abe231a7b3346be4fe455912" title="return the difference (as long int) in µs between 2 struct timeval r = a - b">time_sub</a>(<span class="keyword">struct</span> timeval *a, <span class="keyword">struct</span> timeval *b)
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 <span class="keyword">struct </span>timeval r;
<a name="l00109"></a>00109 r.tv_sec = a -> tv_sec - b -> tv_sec;
<a name="l00110"></a>00110 r.tv_usec = a -> tv_usec - b -> tv_usec;
<a name="l00111"></a>00111 <span class="keywordflow">if</span> (r.tv_usec < 0)
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 r.tv_sec--;
<a name="l00114"></a>00114 r.tv_usec += 1000000;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordflow">return</span> r.tv_sec * 1000000 + r.tv_usec;
<a name="l00118"></a>00118 } <span class="comment">/* time_sub */</span>
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="keywordtype">int</span> ThreadCreate(pthread_t * pthThread, <span class="keywordtype">int</span> attributes,
<a name="l00121"></a>00121 PCSCLITE_THREAD_FUNCTION(pvFunction), LPVOID pvArg)
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 pthread_attr_t attr;
<a name="l00124"></a>00124 <span class="keywordtype">int</span> ret;
<a name="l00125"></a>00125
<a name="l00126"></a>00126 ret = pthread_attr_init(&attr);
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (ret)
<a name="l00128"></a>00128 <span class="keywordflow">return</span> ret;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 ret = pthread_attr_setdetachstate(&attr,
<a name="l00131"></a>00131 attributes & THREAD_ATTR_DETACHED ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE);
<a name="l00132"></a>00132 <span class="keywordflow">if</span> (ret)
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 (void)pthread_attr_destroy(&attr);
<a name="l00135"></a>00135 <span class="keywordflow">return</span> ret;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138 ret = pthread_create(pthThread, &attr, pvFunction, pvArg);
<a name="l00139"></a>00139 <span class="keywordflow">if</span> (ret)
<a name="l00140"></a>00140 <span class="keywordflow">return</span> ret;
<a name="l00141"></a>00141
<a name="l00142"></a>00142 ret = pthread_attr_destroy(&attr);
<a name="l00143"></a>00143 <span class="keywordflow">return</span> ret;
<a name="l00144"></a>00144 }
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