Add a manual page for the utrace() system call.

Obtained from:	NetBSD

2 files changed, 87 insertions, 1 deletions

diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index d66bd7f..49ac92c 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -81,7 +81,7 @@ MAN+=	_exit.2 accept.2 access.2 acct.2 adjtime.2 \
 	sigstack.2 sigsuspend.2 socket.2 socketpair.2 stat.2 statfs.2 \
 	swapon.2 symlink.2 sync.2 sysarch.2 syscall.2 \
 	truncate.2 umask.2 undelete.2 \
-	unlink.2 utimes.2 uuidgen.2 vfork.2 wait.2 write.2
+	unlink.2 utimes.2 utrace.2 uuidgen.2 vfork.2 wait.2 write.2
 .if !defined(NO_P1003_1B)
 MAN+=	sched_get_priority_max.2 sched_setparam.2 \
 	sched_setscheduler.2 sched_yield.2
diff --git a/lib/libc/sys/utrace.2 b/lib/libc/sys/utrace.2
new file mode 100644
index 0000000..ca81672
--- /dev/null
+++ b/lib/libc/sys/utrace.2
@@ -0,0 +1,86 @@
+.\"	$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.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by the NetBSD
+.\"      Foundation, Inc. and its contributors.
+.\" 4. Neither the name of The NetBSD Foundation nor the names of its
+.\"    contributors may be used to endorse or promote products derived
+.\"    from this software without specific prior written permission.
+.\"
+.\" 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 December 28, 2000
+.Dt UTRACE 2
+.Os
+.Sh NAME
+.Nm utrace
+.Nd insert user record in ktrace log
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.In sys/types.h
+.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
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width Er
+.It Bq Er ENOSYS
+Currently running kernel was compiled without
+.Xr ktrace 2
+support (option KTRACE).
+.It Bq Er EINVAL
+Specified data length
+.Fa len
+was bigger than
+.Dv KTR_USER_MAXLEN .
+.El
+.Sh SEE ALSO
+.Xr kdump 1 ,
+.Xr ktrace 1 ,
+.Xr ktrace 2
+.Sh HISTORY
+The
+.Fn utrace
+system call first appeared in
+.Fx 2.2 .