1 /* $NetBSD: fetch.c,v 1.7 2000/07/05 11:03:21 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)fetch.c 8.1 (Berkeley) 6/6/93"; 40 #endif 41 __RCSID("$NetBSD: fetch.c,v 1.7 2000/07/05 11:03:21 ad Exp $"); 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/sched.h> 46 #include <sys/sysctl.h> 47 #include <string.h> 48 #include "systat.h" 49 #include "extern.h" 50 51 ssize_t 52 kvm_ckread(void *a, void *b, size_t l) 53 { 54 if (kvm_read(kd, (u_long)a, b, l) != l) { 55 if (verbose) 56 error("error reading kmem at %x\n", a); 57 return (0); 58 } else 59 return (1); 60 } 61 62 int 63 fetch_cptime(u_int64_t *cptime) 64 { 65 size_t ssize; 66 int mib[2]; 67 68 /* 69 * XXX Need to locate the `correct' CPU when looking for this 70 * XXX in crash dumps. Just don't report it for now, in that 71 * XXX case. 72 */ 73 ssize = CPUSTATES * sizeof(u_int64_t); 74 memset(cptime, 0, ssize); 75 if (memf == NULL) { 76 mib[0] = CTL_KERN; 77 mib[1] = KERN_CP_TIME; 78 if (sysctl(mib, 2, cptime, &ssize, NULL, 0) < 0) { 79 if (verbose) 80 error("error fetching cp_time\n"); 81 return (0); 82 } else 83 return (1); 84 } 85 return (1); 86 } 87