1221807Sstas/*- 2221807Sstas * Copyright (c) 2009 Ulf Lilleengen 3221807Sstas * All rights reserved. 4221807Sstas * 5221807Sstas * Redistribution and use in source and binary forms, with or without 6221807Sstas * modification, are permitted provided that the following conditions 7221807Sstas * are met: 8221807Sstas * 1. Redistributions of source code must retain the above copyright 9221807Sstas * notice, this list of conditions and the following disclaimer. 10221807Sstas * 2. Redistributions in binary form must reproduce the above copyright 11221807Sstas * notice, this list of conditions and the following disclaimer in the 12221807Sstas * documentation and/or other materials provided with the distribution. 13221807Sstas * 14221807Sstas * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15221807Sstas * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16221807Sstas * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17221807Sstas * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18221807Sstas * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19221807Sstas * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20221807Sstas * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21221807Sstas * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22221807Sstas * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23221807Sstas * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24221807Sstas * SUCH DAMAGE. 25221807Sstas * 26221807Sstas * $FreeBSD: stable/11/lib/libutil/kinfo_getproc.c 312031 2017-01-13 08:39:23Z ngie $ 27221807Sstas */ 28221807Sstas 29221807Sstas#include <sys/cdefs.h> 30221807Sstas__FBSDID("$FreeBSD: stable/11/lib/libutil/kinfo_getproc.c 312031 2017-01-13 08:39:23Z ngie $"); 31221807Sstas 32221807Sstas#include <sys/param.h> 33312031Sngie#include <sys/sysctl.h> 34221807Sstas#include <sys/user.h> 35221807Sstas#include <stdlib.h> 36221807Sstas#include <string.h> 37221807Sstas 38221807Sstas#include "libutil.h" 39221807Sstas 40221807Sstasstruct kinfo_proc * 41221807Sstaskinfo_getproc(pid_t pid) 42221807Sstas{ 43221807Sstas struct kinfo_proc *kipp; 44221807Sstas int mib[4]; 45221807Sstas size_t len; 46221807Sstas 47221807Sstas len = 0; 48221807Sstas mib[0] = CTL_KERN; 49221807Sstas mib[1] = KERN_PROC; 50221807Sstas mib[2] = KERN_PROC_PID; 51221807Sstas mib[3] = pid; 52312031Sngie if (sysctl(mib, nitems(mib), NULL, &len, NULL, 0) < 0) 53221807Sstas return (NULL); 54221807Sstas 55221807Sstas kipp = malloc(len); 56221807Sstas if (kipp == NULL) 57221807Sstas return (NULL); 58221807Sstas 59312031Sngie if (sysctl(mib, nitems(mib), kipp, &len, NULL, 0) < 0) 60221807Sstas goto bad; 61221807Sstas if (len != sizeof(*kipp)) 62221807Sstas goto bad; 63221807Sstas if (kipp->ki_structsize != sizeof(*kipp)) 64221807Sstas goto bad; 65221807Sstas if (kipp->ki_pid != pid) 66221807Sstas goto bad; 67221807Sstas return (kipp); 68221807Sstasbad: 69221807Sstas free(kipp); 70221807Sstas return (NULL); 71221807Sstas} 72