1 /* 2 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Joerg Sonnenberger <joerg@bec.de>. 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 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/lib/libkcore/kcore_proc.c,v 1.2 2007/04/29 01:36:03 dillon Exp $ 35 */ 36 37 #include <sys/user.h> /* MUST BE FIRST */ 38 #include <sys/param.h> 39 #include <sys/sysctl.h> 40 41 #include <err.h> 42 #include <errno.h> 43 #include <kcore.h> 44 #include <kvm.h> 45 #include <nlist.h> 46 #include <stdlib.h> 47 #include <string.h> 48 49 #include "kcore_private.h" 50 51 int 52 kcore_get_procs(struct kcore_data *kc, struct kinfo_proc **procs, size_t *len) 53 { 54 struct kinfo_proc *p; 55 int nlen; 56 57 if (kc == NULL) 58 kc = &kcore_global; 59 60 p = kvm_getprocs(kc->kd, KERN_PROC_ALL, 0, &nlen); 61 if (p == NULL) { 62 warnx("cannot read process table: %s", kvm_geterr(kc->kd)); 63 return(-1); 64 } 65 if (nlen == 0) { 66 procs = NULL; 67 len = 0; 68 } 69 *procs = malloc(sizeof(struct kinfo_proc) * nlen); 70 if (*procs == NULL) 71 return(ENOMEM); 72 memcpy(*procs, p, sizeof(struct kinfo_proc) * nlen); 73 *len = nlen; 74 return(0); 75 } 76