1.\" $NetBSD: utrace.2,v 1.11 2003/04/24 12:17:49 wiz Exp $ 2.\" 3.\" Copyright (c) 2000 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Gregory McGarry <g.mcgarry@ieee.org>. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.Dd December 11, 2015 30.Dt UTRACE 2 31.Os 32.Sh NAME 33.Nm utrace 34.Nd insert user record in ktrace log 35.Sh LIBRARY 36.Lb libc 37.Sh SYNOPSIS 38.In sys/param.h 39.In sys/time.h 40.In sys/uio.h 41.In sys/ktrace.h 42.Ft int 43.Fn utrace "const void *addr" "size_t len" 44.Sh DESCRIPTION 45Adds a record to the process trace with information supplied by user. 46The record contains 47.Fa len 48bytes from memory pointed to by 49.Fa addr . 50This call only has an effect if the calling process is being traced. 51.Sh RETURN VALUES 52.Rv -std 53.Sh ERRORS 54.Bl -tag -width Er 55.It Bq Er EINVAL 56Specified data length 57.Fa len 58was bigger than 59.Dv KTR_USER_MAXLEN . 60.It Bq Er ENOMEM 61Insufficient memory to honor the request. 62.It Bq Er ENOSYS 63Currently running kernel was compiled without 64.Xr ktrace 2 65support 66.Pq Cd "options KTRACE" . 67.El 68.Sh SEE ALSO 69.Xr kdump 1 , 70.Xr ktrace 1 , 71.Xr truss 1 , 72.Xr ktrace 2 , 73.Xr sysdecode_utrace 3 74.Sh HISTORY 75The 76.Fn utrace 77system call first appeared in 78.Fx 2.2 . 79