195aef9962
This uses the kdump(1) utrace support code directly until a common library is created. This allows malloc(3) tracing with MALLOC_CONF=utrace:true and rtld tracing with LD_UTRACE=1. Unknown utrace(2) data is just printed as hex. PR: 43819 [inspired by] Reviewed by: jhb MFC after: 2 weeks Relnotes: yes Differential Revision: https://reviews.freebsd.org/D3819
80 lines
2.4 KiB
Groff
80 lines
2.4 KiB
Groff
.\" $NetBSD: utrace.2,v 1.11 2003/04/24 12:17:49 wiz Exp $
|
|
.\"
|
|
.\" Copyright (c) 2000 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Gregory McGarry <g.mcgarry@ieee.org>.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd October 5, 2015
|
|
.Dt UTRACE 2
|
|
.Os
|
|
.Sh NAME
|
|
.Nm utrace
|
|
.Nd insert user record in ktrace log
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In sys/param.h
|
|
.In sys/time.h
|
|
.In sys/uio.h
|
|
.In sys/ktrace.h
|
|
.Ft int
|
|
.Fn utrace "const void *addr" "size_t len"
|
|
.Sh DESCRIPTION
|
|
Adds a record to the process trace with information supplied by user.
|
|
The record contains
|
|
.Fa len
|
|
bytes from memory pointed to by
|
|
.Fa addr .
|
|
This call only has an effect if the calling process is being traced.
|
|
.Sh RETURN VALUES
|
|
.Rv -std
|
|
.Sh ERRORS
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
Specified data length
|
|
.Fa len
|
|
was bigger than
|
|
.Dv KTR_USER_MAXLEN .
|
|
.It Bq Er ENOMEM
|
|
Insufficient memory to honor the request.
|
|
.It Bq Er ENOSYS
|
|
Currently running kernel was compiled without
|
|
.Xr ktrace 2
|
|
support
|
|
.Pq Cd "options KTRACE" .
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr kdump 1 ,
|
|
.Xr ktrace 1 ,
|
|
.Xr ktrace 2 ,
|
|
.Xr truss 1
|
|
.Sh HISTORY
|
|
The
|
|
.Fn utrace
|
|
system call first appeared in
|
|
.Fx 2.2 .
|