#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <syslog.h>

#include "cookie.h"

static char const *priov[] = {
	[LOG_EMERG]	=	"EMERG:",
	[LOG_ALERT]	=	"ALERT:",
	[LOG_CRIT]	=	"CRIT:",
	[LOG_ERR]	=	"ERR:",
	[LOG_WARNING]	=	"WARNING:",
	[LOG_NOTICE]	=	"NOTICE:",
	[LOG_INFO]	=	"INFO:",
	[LOG_DEBUG]	=	"DEBUG:",
};

static ssize_t cookie_writer(void *cookie, char const *data, size_t leng)
{
	int prio = LOG_DEBUG, len;

	do {
		len = strlen(priov[prio]);
	} while (memcmp(data, priov[prio], len) && --prio >= 0);

	if (prio < 0) {
		prio = LOG_INFO;
	} else {
		data += len;
		leng -= len;
	}

	while (*data == ' ') {
		 ++data;
		--leng;
	}

	syslog(prio, "%.*s", (int) leng, data);

	return leng;
}

static cookie_io_functions_t cookie_log = {
	.write		=	cookie_writer,
};

void to_std_log(FILE **fp)
{
	setvbuf(*fp = fopencookie(NULL, "w", cookie_log), NULL, _IOLBF, 0);
}
'hidden' name='id' value='672ca65d9aa8578f382784fe73578cd499664828'/><select name='h' onchange='this.form.submit();'>
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='672ca65d9aa8578f382784fe73578cd499664828'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Parthasarathy Bhuvaragan &lt;parthasarathy.bhuvaragan@ericsson.com&gt;</td><td class='right'>2016-08-10 14:07:34 +0200</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2016-08-10 17:56:52 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=672ca65d9aa8578f382784fe73578cd499664828'>672ca65d9aa8578f382784fe73578cd499664828</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=672ca65d9aa8578f382784fe73578cd499664828'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=672ca65d9aa8578f382784fe73578cd499664828'>b3b016c578ca225e824a3317ddf5e94ac6bdf5d6</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=293fddff20cd6d1adf2bd59cda1f5b5e7199104a'>293fddff20cd6d1adf2bd59cda1f5b5e7199104a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=672ca65d9aa8578f382784fe73578cd499664828&amp;id2=293fddff20cd6d1adf2bd59cda1f5b5e7199104a'>diff</a>)</td></tr></table>
<div class='commit-subject'>tipc: fix variable dereference before NULL check</div><div class='commit-msg'>In commit cf6f7e1d5109 ("tipc: dump monitor attributes"),
I dereferenced a pointer before checking if its valid.
This is reported by static check Smatch as:
net/tipc/monitor.c:733 tipc_nl_add_monitor_peer()
     warn: variable dereferenced before check 'mon' (see line 731)

In this commit, we check for a valid monitor before proceeding
with any other operation.

Fixes: cf6f7e1d5109 ("tipc: dump monitor attributes")
Reported-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Signed-off-by: Parthasarathy Bhuvaragan &lt;parthasarathy.bhuvaragan@ericsson.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=672ca65d9aa8578f382784fe73578cd499664828'>Diffstat</a></div><table summary='diffstat' class='diffstat'>