klog_in.c | searchcode

/opensource.apple.com/source/syslog/syslog-100.0.1/syslogd.tproj/klog_in.c

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<h1 style="margin:8px;" id="f1">klog_in.c&nbsp;&nbsp;&nbsp;<span style="font-weight: normal; font-size: 0.5em;">[<a href="?txt">plain text</a>]</span></h1>
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<span class="enscript-comment">/*
 * Copyright (c) 2004-2008 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * <a href="http://www.opensource.apple.com/apsl/">http://www.opensource.apple.com/apsl/</a> and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */</span>

#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;sys/types.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;sys/stat.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;sys/socket.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;sys/un.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;sys/uio.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;stdio.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;stdlib.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;string.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;fcntl.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;errno.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&lt;unistd.h&gt;</span>
#<span class="enscript-reference">include</span> <span class="enscript-string">&quot;daemon.h&quot;</span>

#<span class="enscript-reference">define</span> <span class="enscript-variable-name">forever</span> for(;;)

#<span class="enscript-reference">define</span> <span class="enscript-variable-name">MY_ID</span> <span class="enscript-string">&quot;klog_in&quot;</span>
#<span class="enscript-reference">define</span> <span class="enscript-variable-name">MAXLINE</span> 4096

<span class="enscript-type">static</span> <span class="enscript-type">int</span> kx = 0;
<span class="enscript-type">static</span> <span class="enscript-type">char</span> kline[MAXLINE + 1];

asl_msg_t *
<span class="enscript-function-name">klog_in_acceptmsg</span>(<span class="enscript-type">int</span> fd)
{
	<span class="enscript-type">int</span> n;
	<span class="enscript-type">char</span> c;

	n = read(fd, &amp;c, 1);

	<span class="enscript-keyword">while</span> ((n == 1) &amp;&amp; (c != <span class="enscript-string">'\n'</span>))
	{
		<span class="enscript-keyword">if</span> (kx &lt; MAXLINE) kline[kx++] = c;
		n = read(fd, &amp;c, 1);
	}

	<span class="enscript-keyword">if</span> (kx == 0) <span class="enscript-keyword">return</span> NULL;

	n = kx - 1;
	kline[kx] = <span class="enscript-string">'\0'</span>;
	kx = 0;

	<span class="enscript-keyword">return</span> asl_input_parse(kline, n, NULL, 1);
}

<span class="enscript-type">int</span>
<span class="enscript-function-name">klog_in_init</span>(<span class="enscript-type">void</span>)
{
	asldebug(<span class="enscript-string">&quot;%s: init\n&quot;</span>, MY_ID);
	<span class="enscript-keyword">if</span> (global.kfd &gt;= 0) <span class="enscript-keyword">return</span> global.kfd;

	global.kfd = open(_PATH_KLOG, O_RDONLY, 0);
	<span class="enscript-keyword">if</span> (global.kfd &lt; 0)
	{
		asldebug(<span class="enscript-string">&quot;%s: couldn't open %s: %s\n&quot;</span>, MY_ID, _PATH_KLOG, strerror(errno));
		<span class="enscript-keyword">return</span> -1;
	}

	<span class="enscript-keyword">if</span> (fcntl(global.kfd, F_SETFL, O_NONBLOCK) &lt; 0)
	{
		close(global.kfd);
		global.kfd = -1;
		asldebug(<span class="enscript-string">&quot;%s: couldn't set O_NONBLOCK for fd %d (%s): %s\n&quot;</span>, MY_ID, global.kfd, _PATH_KLOG, strerror(errno));
		<span class="enscript-keyword">return</span> -1;
	}

	<span class="enscript-keyword">return</span> aslevent_addfd(SOURCE_KERN, global.kfd, ADDFD_FLAGS_LOCAL, klog_in_acceptmsg, NULL, NULL);
}

<span class="enscript-type">int</span>
<span class="enscript-function-name">klog_in_reset</span>(<span class="enscript-type">void</span>)
{
	<span class="enscript-keyword">return</span> 0;
}

<span class="enscript-type">int</span>
<span class="enscript-function-name">klog_in_close</span>(<span class="enscript-type">void</span>)
{
	<span class="enscript-keyword">if</span> (global.kfd &lt; 0) <span class="enscript-keyword">return</span> 1;

	close(global.kfd);
	global.kfd = -1;

	<span class="enscript-keyword">return</span> 0;
}
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