1.\" 2.\" Copyright (c) 2009 Ulf Lilleengen 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd February 25, 2012 29.Dt KINFO_GETPROC 3 30.Os 31.Sh NAME 32.Nm kinfo_getproc 33.Nd function for getting process information from kernel 34.Sh LIBRARY 35.Lb libutil 36.Sh SYNOPSIS 37.In sys/types.h 38.In libutil.h 39.Ft struct kinfo_proc * 40.Fn kinfo_getproc "pid_t pid" "int *cntp" 41.Sh DESCRIPTION 42This function is used for obtaining process information from the kernel. 43.Pp 44The 45.Ar pid 46field contains the process identifier. 47This should be a process that you have privilege to access. 48This function is a wrapper around 49.Xr sysctl 3 50with the 51.Dv KERN_PROC_PID 52mib. 53While the kernel returns a packed structure, this function expands the 54data into a fixed record format. 55.Sh RETURN VALUES 56On success the 57.Fn kinfo_getproc 58function returns a pointer to a 59.Vt struct kinfo_proc 60structure as defined by 61.In sys/user.h . 62The pointer was obtained by an internal call to 63.Xr malloc 3 64and must be freed by the caller with a call to 65.Xr free 3 . 66On failure the 67.Fn kinfo_getproc 68function returns 69.Dv NULL . 70.Sh SEE ALSO 71.Xr free 3 , 72.Xr malloc 3 , 73.Xr sysctl 3 74