NetBSD/usr.bin/systat/fetch.c

87 lines
2.7 KiB
C

/* $NetBSD: fetch.c,v 1.12 2003/12/07 07:27:09 christos Exp $ */
/*-
* Copyright (c) 1980, 1992, 1993
* The Regents of the University of California. 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)fetch.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: fetch.c,v 1.12 2003/12/07 07:27:09 christos Exp $");
#endif /* not lint */
#include <sys/param.h>
#include <sys/sched.h>
#include <sys/sysctl.h>
#include <string.h>
#include <errno.h>
#include "systat.h"
#include "extern.h"
ssize_t
kvm_ckread(const void *a, void *b, size_t l, const char *name)
{
if (kvm_read(kd, (u_long)a, b, l) != l) {
if (verbose)
error("error reading kmem for %s at %p (%s)\n", name,
a, strerror(errno));
return (0);
} else
return (1);
}
int
fetch_cptime(u_int64_t *cptime)
{
size_t ssize;
int mib[2];
/*
* XXX Need to locate the `correct' CPU when looking for this
* XXX in crash dumps. Just don't report it for now, in that
* XXX case.
*/
ssize = CPUSTATES * sizeof(u_int64_t);
memset(cptime, 0, ssize);
if (memf == NULL) {
mib[0] = CTL_KERN;
mib[1] = KERN_CP_TIME;
if (sysctl(mib, 2, cptime, &ssize, NULL, 0) < 0) {
if (verbose)
error("error fetching cp_time\n");
return (0);
} else
return (1);
}
return (1);
}