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/*-
* Copyright (c) 1998 Andrzej Bialecki <abial@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Small replacement for 'dmesg'. It doesn't need libkvm nor /dev/kmem.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/sysctl.h>
int
main(int argc, char *argv[])
{
int len,i;
char *buf,*p;
char *mib="kern.msgbuf";
/* We use sysctlbyname, because the oid is unknown (OID_AUTO) */
/* get the buffer size */
i=sysctlbyname(mib,NULL,&len,NULL,0);
if(i) {
perror("buffer sizing");
exit(-1);
}
buf=(char *)malloc(len*sizeof(char));
i=sysctlbyname(mib,buf,&len,NULL,0);
if(i) {
perror("retrieving data");
exit(-1);
}
p=buf;
i=0;
while(p<(buf+len)) {
switch(*p) {
case '\0':
/* skip initial NULLs */
break;
default:
putchar(*p);
}
p++;
}
if(*--p!='\n') putchar('\n');
free(buf);
exit(0);
}
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