1*ff87ae35SJohn Baldwin /* 2*ff87ae35SJohn Baldwin * Copyright (c) 2013 Hudson River Trading LLC 3*ff87ae35SJohn Baldwin * Written by: John H. Baldwin <jhb@FreeBSD.org> 4*ff87ae35SJohn Baldwin * All rights reserved. 5*ff87ae35SJohn Baldwin * 6*ff87ae35SJohn Baldwin * Redistribution and use in source and binary forms, with or without 7*ff87ae35SJohn Baldwin * modification, are permitted provided that the following conditions 8*ff87ae35SJohn Baldwin * are met: 9*ff87ae35SJohn Baldwin * 1. Redistributions of source code must retain the above copyright 10*ff87ae35SJohn Baldwin * notice, this list of conditions and the following disclaimer. 11*ff87ae35SJohn Baldwin * 2. Redistributions in binary form must reproduce the above copyright 12*ff87ae35SJohn Baldwin * notice, this list of conditions and the following disclaimer in the 13*ff87ae35SJohn Baldwin * documentation and/or other materials provided with the distribution. 14*ff87ae35SJohn Baldwin * 15*ff87ae35SJohn Baldwin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16*ff87ae35SJohn Baldwin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17*ff87ae35SJohn Baldwin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18*ff87ae35SJohn Baldwin * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19*ff87ae35SJohn Baldwin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20*ff87ae35SJohn Baldwin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21*ff87ae35SJohn Baldwin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22*ff87ae35SJohn Baldwin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23*ff87ae35SJohn Baldwin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24*ff87ae35SJohn Baldwin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25*ff87ae35SJohn Baldwin * SUCH DAMAGE. 26*ff87ae35SJohn Baldwin */ 27*ff87ae35SJohn Baldwin 28*ff87ae35SJohn Baldwin #include <sys/cdefs.h> 29*ff87ae35SJohn Baldwin __FBSDID("$FreeBSD$"); 30*ff87ae35SJohn Baldwin 31*ff87ae35SJohn Baldwin #include <sys/types.h> 32*ff87ae35SJohn Baldwin #include <sys/sysctl.h> 33*ff87ae35SJohn Baldwin #include <sys/user.h> 34*ff87ae35SJohn Baldwin #include <stdlib.h> 35*ff87ae35SJohn Baldwin #include <string.h> 36*ff87ae35SJohn Baldwin 37*ff87ae35SJohn Baldwin #include "libutil.h" 38*ff87ae35SJohn Baldwin 39*ff87ae35SJohn Baldwin struct kinfo_vmobject * 40*ff87ae35SJohn Baldwin kinfo_getvmobject(int *cntp) 41*ff87ae35SJohn Baldwin { 42*ff87ae35SJohn Baldwin char *buf, *bp, *ep; 43*ff87ae35SJohn Baldwin struct kinfo_vmobject *kvo, *list, *kp; 44*ff87ae35SJohn Baldwin size_t len; 45*ff87ae35SJohn Baldwin int cnt, i; 46*ff87ae35SJohn Baldwin 47*ff87ae35SJohn Baldwin buf = NULL; 48*ff87ae35SJohn Baldwin for (i = 0; i < 3; i++) { 49*ff87ae35SJohn Baldwin if (sysctlbyname("vm.objects", NULL, &len, NULL, 0) < 0) 50*ff87ae35SJohn Baldwin return (NULL); 51*ff87ae35SJohn Baldwin buf = reallocf(buf, len); 52*ff87ae35SJohn Baldwin if (buf == NULL) 53*ff87ae35SJohn Baldwin return (NULL); 54*ff87ae35SJohn Baldwin if (sysctlbyname("vm.objects", buf, &len, NULL, 0) == 0) 55*ff87ae35SJohn Baldwin goto unpack; 56*ff87ae35SJohn Baldwin if (errno != ENOMEM) { 57*ff87ae35SJohn Baldwin free(buf); 58*ff87ae35SJohn Baldwin return (NULL); 59*ff87ae35SJohn Baldwin } 60*ff87ae35SJohn Baldwin } 61*ff87ae35SJohn Baldwin free(buf); 62*ff87ae35SJohn Baldwin return (NULL); 63*ff87ae35SJohn Baldwin 64*ff87ae35SJohn Baldwin unpack: 65*ff87ae35SJohn Baldwin /* Count items */ 66*ff87ae35SJohn Baldwin cnt = 0; 67*ff87ae35SJohn Baldwin bp = buf; 68*ff87ae35SJohn Baldwin ep = buf + len; 69*ff87ae35SJohn Baldwin while (bp < ep) { 70*ff87ae35SJohn Baldwin kvo = (struct kinfo_vmobject *)(uintptr_t)bp; 71*ff87ae35SJohn Baldwin bp += kvo->kvo_structsize; 72*ff87ae35SJohn Baldwin cnt++; 73*ff87ae35SJohn Baldwin } 74*ff87ae35SJohn Baldwin 75*ff87ae35SJohn Baldwin list = calloc(cnt, sizeof(*list)); 76*ff87ae35SJohn Baldwin if (list == NULL) { 77*ff87ae35SJohn Baldwin free(buf); 78*ff87ae35SJohn Baldwin return (NULL); 79*ff87ae35SJohn Baldwin } 80*ff87ae35SJohn Baldwin 81*ff87ae35SJohn Baldwin /* Unpack */ 82*ff87ae35SJohn Baldwin bp = buf; 83*ff87ae35SJohn Baldwin kp = list; 84*ff87ae35SJohn Baldwin while (bp < ep) { 85*ff87ae35SJohn Baldwin kvo = (struct kinfo_vmobject *)(uintptr_t)bp; 86*ff87ae35SJohn Baldwin memcpy(kp, kvo, kvo->kvo_structsize); 87*ff87ae35SJohn Baldwin bp += kvo->kvo_structsize; 88*ff87ae35SJohn Baldwin kp->kvo_structsize = sizeof(*kp); 89*ff87ae35SJohn Baldwin kp++; 90*ff87ae35SJohn Baldwin } 91*ff87ae35SJohn Baldwin free(buf); 92*ff87ae35SJohn Baldwin *cntp = cnt; 93*ff87ae35SJohn Baldwin return (list); 94*ff87ae35SJohn Baldwin } 95