86 lines
2.7 KiB
Groff
86 lines
2.7 KiB
Groff
.\"
|
|
.\" Copyright (c) 2013 Robert N. M. Watson
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This software was developed by SRI International and the University of
|
|
.\" Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
|
|
.\" ("CTSRD"), as part of the DARPA CRASH research programme.
|
|
.\"
|
|
.\" 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 May 15, 2020
|
|
.Dt PROCDESC 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm procdesc
|
|
.Nd process descriptor facility
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
is a file-descriptor-oriented interface to process signalling and control,
|
|
which supplements historic
|
|
.Ux
|
|
.Xr fork 2
|
|
and
|
|
.Xr kill 2 ,
|
|
primitives with
|
|
new system calls such as
|
|
.Xr pdfork 2
|
|
and
|
|
.Xr pdkill 2 ,
|
|
.Nm
|
|
is designed for use with
|
|
.Xr capsicum 4 ,
|
|
replacing process identifiers with capability-oriented references.
|
|
However, it can also be used independently of
|
|
.Xr capsicum 4 ,
|
|
displacing PIDs, which may otherwise suffer from race conditions.
|
|
Given a process descriptor, it is possible to query its conventional PID using
|
|
.Xr pdgetpid 2 .
|
|
.Sh SEE ALSO
|
|
.Xr fork 2 ,
|
|
.Xr kill 2 ,
|
|
.Xr pdfork 2 ,
|
|
.Xr pdgetpid 2 ,
|
|
.Xr pdkill 2 ,
|
|
.Xr kqueue 2 ,
|
|
.Xr wait4 2 ,
|
|
.Xr capsicum 4
|
|
.Sh HISTORY
|
|
.Nm
|
|
first appeared in
|
|
.Fx 9.0 ,
|
|
and was developed at the University of Cambridge.
|
|
.Sh AUTHORS
|
|
.Nm
|
|
was developed by
|
|
.An -nosplit
|
|
.An Robert Watson Aq Mt rwatson@FreeBSD.org
|
|
and
|
|
.An Jonathan Anderson Aq Mt jonathan@FreeBSD.org
|
|
at the University of Cambridge, and
|
|
.An Ben Laurie Aq Mt benl@FreeBSD.org
|
|
and
|
|
.An Kris Kennaway Aq Mt kris@FreeBSD.org
|
|
at Google, Inc.
|