1 /* $NetBSD: fetch.c,v 1.9 2000/12/01 02:19:43 simonb 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 1.9 2000/12/01 02:19:43 simonb Exp $"); 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/sched.h> 46 #include <sys/sysctl.h> 47 48 #include <string.h> 49 50 #include "systat.h" 51 #include "extern.h" 52 53 ssize_t 54 kvm_ckread(void *a, void *b, size_t l) 55 { 56 if (kvm_read(kd, (u_long)a, b, l) != l) { 57 if (verbose) 58 error("error reading kmem at %lx\n", 59 (u_long) a); 60 return (0); 61 } else 62 return (1); 63 } 64 65 int 66 fetch_cptime(u_int64_t *cptime) 67 { 68 size_t ssize; 69 int mib[2]; 70 71 /* 72 * XXX Need to locate the `correct' CPU when looking for this 73 * XXX in crash dumps. Just don't report it for now, in that 74 * XXX case. 75 */ 76 ssize = CPUSTATES * sizeof(u_int64_t); 77 memset(cptime, 0, ssize); 78 if (memf == NULL) { 79 mib[0] = CTL_KERN; 80 mib[1] = KERN_CP_TIME; 81 if (sysctl(mib, 2, cptime, &ssize, NULL, 0) < 0) { 82 if (verbose) 83 error("error fetching cp_time\n"); 84 return (0); 85 } else 86 return (1); 87 } 88 return (1); 89 } 90