📄 syslog.h.html

📁 unix 下的C开发手册,还用详细的例程。
💻 HTML
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>&lt;syslog.h&gt;</title></head><body bgcolor=white><center><font size=2>The Single UNIX &reg; Specification, Version 2<br>Copyright &copy; 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_000_009_309">&nbsp;</a>NAME</h4><blockquote>syslog - definitions for system error logging</blockquote><h4><a name = "tag_000_009_310">&nbsp;</a>SYNOPSIS</h4><blockquote><pre><code>#include &lt;syslog.h&gt;</code></pre></blockquote><h4><a name = "tag_000_009_311">&nbsp;</a>DESCRIPTION</h4><blockquote>The &lt;<b>syslog.h</b>&gt; header defines the following symbolic constants, zero ormore of which may be OR-ed together to form the <i>logopt</i> option of<i><a href="openlog.html">openlog()</a></i>:<dl compact><dt>LOG_PID<dd>Log the process ID with each message.<dt>LOG_CONS<dd>Log to the system console on error.<dt>LOG_NDELAY<dd>Connect to syslog daemon immediately.<dt>LOG_ODELAY<dd>Delay open until<i><a href="syslog.html">syslog()</a></i>is called.<dt>LOG_NOWAIT<dd>Don't wait for child processes.</dl><p>The following symbolic constants are defined as possible values of the<i>facility</i> argument to<i><a href="openlog.html">openlog()</a></i>:<dl compact><dt>LOG_KERN<dd>Reserved for message generated by the system.<dt>LOG_USER<dd>Message generated by a process.<dt>LOG_MAIL<dd>Reserved for message generated by mail system.<dt>LOG_NEWS<dd>Reserved for message generated by news system.<dt>LOG_UUCP<dd>Reserved for message generated by UUCP system.<dt>LOG_DAEMON<dd>Reserved for message generated by system daemon.<dt>LOG_AUTH<dd>Reserved for message generated by authorisation daemon.<dt>LOG_CRON<dd>Reserved for message generated by the clock daemon.<dt>LOG_LPR<dd>Reserved for message generated by printer system.<dt>LOG_LOCAL0<dd>Reserved for local use.<dt>LOG_LOCAL1<dd>Reserved for local use.<dt>LOG_LOCAL2<dd>Reserved for local use.<dt>LOG_LOCAL3<dd>Reserved for local use.<dt>LOG_LOCAL4<dd>Reserved for local use.<dt>LOG_LOCAL5<dd>Reserved for local use.<dt>LOG_LOCAL6<dd>Reserved for local use.<dt>LOG_LOCAL7<dd>Reserved for local use.</dl><p>The following are declared as macros for constructing the <i>maskpri</i>argument to<i><a href="setlogmask.html">setlogmask()</a></i>.The following macros expand to an expression of type <b>int</b> when theargument <i>pri</i> is an expression of type <b>int</b>:<dl compact><dt>LOG_MASK(<i>pri</i>)<dd>A mask for priority <i>pri</i>.</dl><p>The following constants are defined as possible values for the <i>priority</i>argument of<i><a href="syslog.html">syslog()</a></i>:<dl compact><dt>LOG_EMERG<dd>A panic condition was reported to all processes.<dt>LOG_ALERT<dd>A condition that should be corrected immediately.<dt>LOG_CRIT<dd>A critical condition.<dt>LOG_ERR<dd>An error message.<dt>LOG_WARNING<dd>A warning message.<dt>LOG_NOTICE<dd>A condition requiring special handling.<dt>LOG_INFO<dd>A general information message.<dt>LOG_DEBUG<dd>A message useful for debugging programs.</dl><p>The following are declared as functions and may also be defined as macros.Function prototypes must be provided for use with an ISO Ccompiler.<pre><code>void  <a href="closelog.html">closelog</a>(void);void  <a href="openlog.html">openlog</a>(const char *, int, int);int   <a href="setlogmask.html">setlogmask</a>(int);void  <a href="syslog.html">syslog</a>(int, const char *, ...);</code></pre></blockquote><h4><a name = "tag_000_009_312">&nbsp;</a>APPLICATION USAGE</h4><blockquote>None.</blockquote><h4><a name = "tag_000_009_313">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_009_314">&nbsp;</a>SEE ALSO</h4><blockquote><i><a href="closelog.html">closelog()</a></i>.</blockquote><hr size=2 noshade><center><font size=2>UNIX &reg; is a registered Trademark of The Open Group.<br>Copyright &copy; 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -