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<h1>system/logRotate.c</h1><a href="logRotate_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include <sys/select.h></span> <span class="comment">/* for select system call and related */</span>
<a name="l00002"></a>00002 <span class="preprocessor">#include <time.h></span>
<a name="l00003"></a>00003 <span class="preprocessor">#include <unistd.h></span> <span class="comment">/* for fork and exec */</span>
<a name="l00004"></a>00004 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00005"></a>00005 <span class="preprocessor">#include <sys/wait.h></span>
<a name="l00006"></a>00006 <span class="preprocessor">#include <stdio.h></span> <span class="comment">/* fopen and stuff */</span>
<a name="l00007"></a>00007 <span class="preprocessor">#include <stdlib.h></span> <span class="comment">/* exit */</span>
<a name="l00008"></a>00008 <span class="preprocessor">#include <string.h></span> <span class="comment">/* strncpy, memcpy, etc. */</span>
<a name="l00009"></a>00009 <span class="preprocessor">#include <syslog.h></span>
<a name="l00010"></a>00010 <span class="preprocessor">#include <errno.h></span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="preprocessor">#include "../include/monitor.h"</span>
<a name="l00013"></a>00013
<a name="l00014"></a>00014
<a name="l00015"></a>00015 <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="client_8h.html#0b2caeb4b6f130be43e5a2f0267dd453">verbose</a>;
<a name="l00016"></a>00016
<a name="l00017"></a><a class="code" href="logRotate_8c.html#70a3ebded819019c99ad001f29e082de">00017</a> <span class="keywordtype">void</span> <a class="code" href="logRotate_8h.html#82df920a9975d5484d681c6f9009da38">logRotate</a>(FILE ** handle, <span class="keywordtype">char</span> * path, <span class="keywordtype">char</span> * pattern) {
<a name="l00018"></a>00018 <span class="keyword">static</span> <span class="keywordtype">char</span> logName[1024] = <span class="stringliteral">""</span>;
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="keywordtype">char</span> strftimeName[128] = <span class="stringliteral">""</span>;
<a name="l00021"></a>00021 <span class="keywordtype">char</span> newLogName[1024] = <span class="stringliteral">""</span>;
<a name="l00022"></a>00022
<a name="l00023"></a>00023 time_t t;
<a name="l00024"></a>00024 <span class="keyword">struct </span>tm *tmp;
<a name="l00025"></a>00025
<a name="l00026"></a>00026 t = time(NULL);
<a name="l00027"></a>00027 tmp = localtime(&t);
<a name="l00028"></a>00028 <span class="keywordflow">if</span> (tmp == NULL) {
<a name="l00029"></a>00029 <a class="code" href="monitor_8h.html#5d332cf84a9d6dd9c77382a74960cccf">syslogMonitor</a>(LOG_ERR, <a class="code" href="monitor_8h.html#d702c7f3311c0b76ee05d7efd27c87b2">MON_INFO</a>, <span class="stringliteral">"logrotate.localtime"</span>,
<a name="l00030"></a>00030 <span class="stringliteral">"can't get localtime for new logname. continue with old one"</span>);
<a name="l00031"></a>00031 <span class="keywordflow">return</span>;
<a name="l00032"></a>00032 }
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="keywordflow">if</span> (strftime(strftimeName, <span class="keyword">sizeof</span>(strftimeName)-1, pattern, tmp) == 0) {
<a name="l00035"></a>00035 <a class="code" href="monitor_8h.html#5d332cf84a9d6dd9c77382a74960cccf">syslogMonitor</a>(LOG_ERR, <a class="code" href="monitor_8h.html#d702c7f3311c0b76ee05d7efd27c87b2">MON_INFO</a>, <span class="stringliteral">"logrotate.strftime"</span>,
<a name="l00036"></a>00036 <span class="stringliteral">"strftime returned 0 for new logname. continue with old one"</span>);
<a name="l00037"></a>00037 <span class="keywordflow">return</span>;
<a name="l00038"></a>00038 }
<a name="l00039"></a>00039
<a name="l00040"></a>00040 snprintf(newLogName, <span class="keyword">sizeof</span>(newLogName)-1, <span class="stringliteral">"%s/%s"</span>, path, strftimeName);
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keywordflow">if</span> (0 != strncmp(logName, newLogName, <span class="keyword">sizeof</span>(logName)-1)) {
<a name="l00043"></a>00043 <span class="keywordflow">if</span> (0 != <a class="code" href="client_8h.html#0b2caeb4b6f130be43e5a2f0267dd453">verbose</a>) {
<a name="l00044"></a>00044 syslog(LOG_INFO, <span class="stringliteral">"actual logfile name: %s"</span>, logName);
<a name="l00045"></a>00045 syslog(LOG_INFO, <span class="stringliteral">"new logfile name: %s"</span>, newLogName);
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keywordflow">if</span> (NULL != *handle) {
<a name="l00049"></a>00049 fclose(*handle);
<a name="l00050"></a>00050
<a name="l00051"></a>00051 pid_t gzipPid = fork();
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="keywordflow">switch</span>(gzipPid) {
<a name="l00054"></a>00054 pid_t tmpPid;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keywordflow">case</span> 0:
<a name="l00057"></a>00057 <span class="comment">// We don't care about finishing of child, so decouple it</span>
<a name="l00058"></a>00058 <span class="comment">// by using a second child that stop immediatly</span>
<a name="l00059"></a>00059 tmpPid = fork();
<a name="l00060"></a>00060 <span class="keywordflow">if</span> (0 == tmpPid) {
<a name="l00061"></a>00061 syslog(LOG_INFO, <span class="stringliteral">"gzip: %s"</span>, logName);
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (-1 == execl(<span class="stringliteral">"/bin/gzip"</span>, <span class="stringliteral">"/bin/gzip"</span>, <span class="stringliteral">"-9"</span>, logName, (<span class="keywordtype">char</span> *) 0)) {
<a name="l00063"></a>00063 <a class="code" href="monitor_8h.html#5d332cf84a9d6dd9c77382a74960cccf">syslogMonitor</a>(LOG_ERR, <a class="code" href="monitor_8h.html#d702c7f3311c0b76ee05d7efd27c87b2">MON_INFO</a>, <span class="stringliteral">"logrotate.gzip"</span>,
<a name="l00064"></a>00064 <span class="stringliteral">"execl failed for gzip %s: %s"</span>, logName, strerror(errno));
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 exit(EXIT_SUCCESS);
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="keywordflow">case</span> -1:
<a name="l00070"></a>00070 <a class="code" href="monitor_8h.html#5d332cf84a9d6dd9c77382a74960cccf">syslogMonitor</a>(LOG_ERR, <a class="code" href="monitor_8h.html#d702c7f3311c0b76ee05d7efd27c87b2">MON_INFO</a>, <span class="stringliteral">"logrotate.fork"</span>,
<a name="l00071"></a>00071 <span class="stringliteral">"fork failed for gzip %s: %s"</span>, logName, strerror(errno));
<a name="l00072"></a>00072 <span class="keywordflow">break</span>;
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keywordflow">default</span>:
<a name="l00075"></a>00075 wait(NULL);
<a name="l00076"></a>00076 <span class="keywordflow">break</span>;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a>00080 strncpy(logName, newLogName, <span class="keyword">sizeof</span>(logName)-1);
<a name="l00081"></a>00081 *handle = fopen(logName, <span class="stringliteral">"w"</span>);
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 }
</pre></div></div>
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