procdesc (4)

Leading comments

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 o...

(The comments found at the beginning of the groff file "man4/procdesc.4freebsd".)

NAME

procdesc - process descriptor facility

SYNOPSIS

options PROCDESC

DESCRIPTION

ifconfig is a file-descriptor-oriented interface to process signalling and control, which supplements historic UNIX fork(2), kill(2), and wait4(2) primitives with new system calls such as pdfork(2), pdkill(2), and pdwait4(2). ifconfig is designed for use with capsicum(4), replacing process identifiers with capability-oriented references. However, it can also be used independently of capsicum(4), displacing PIDs, which may otherwise suffer from race conditions. Given a process descriptor, it is possible to query its conventional PID using pdgetpid(2).

SEE ALSO

fork(2), kill(2), wait4(2), pdfork(2), pdgetpid(2), pdkill(2), pdwait4(2), capsicum(4)

HISTORY

ifconfig first appeared in Fx 9.0 , and was developed at the University of Cambridge.

AUTHORS

ifconfig was developed by An -nosplit An Robert Watson Aq rwatson@FreeBSD.org and An Jonathan Anderson Aq jonathan@FreeBSD.org at the University of Cambridge, and An Ben Laurie Aq benl@FreeBSD.org and An Kris Kennaway Aq kris@FreeBSD.org at Google, Inc.

BUGS

ifconfig is considered experimental in Fx .