diff options
| -rw-r--r-- | share/man/man4/Makefile | 1 | ||||
| -rw-r--r-- | share/man/man4/capsicum.4 | 14 | ||||
| -rw-r--r-- | share/man/man4/procdesc.4 | 93 |
3 files changed, 103 insertions, 5 deletions
diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile index 3a7da85..e51ad39 100644 --- a/share/man/man4/Makefile +++ b/share/man/man4/Makefile @@ -367,6 +367,7 @@ MAN= aac.4 \ ppbus.4 \ ppc.4 \ ppi.4 \ + procdesc.4 \ psm.4 \ pst.4 \ pt.4 \ diff --git a/share/man/man4/capsicum.4 b/share/man/man4/capsicum.4 index 39619f9..8f38dc4 100644 --- a/share/man/man4/capsicum.4 +++ b/share/man/man4/capsicum.4 @@ -1,5 +1,5 @@ .\" -.\" Copyright (c) 2011 Robert N. M. Watson +.\" Copyright (c) 2011, 2013 Robert N. M. Watson .\" Copyright (c) 2011 Jonathan Anderson .\" All rights reserved. .\" @@ -26,7 +26,7 @@ .\" .\" $FreeBSD$ .\" -.Dd September 20, 2011 +.Dd August 21, 2013 .Dt CAPSICUM 4 .Os .Sh NAME @@ -78,10 +78,13 @@ objects using capabilities rather than global namespaces: .Bl -tag -width indent .It process descriptors File descriptors representing processes, allowing parent processes to manage -child processes without requiring access to the PID namespace. +child processes without requiring access to the PID namespace; described in +greater detail in +.Xr procdesc 4 . .It anonymous shared memory An extension to the POSIX shared memory API to support anonymous swap objects -associated with file descriptors. +associated with file descriptors; described in greater detail in +.Xr shm_open 2 . .El .Sh SEE ALSO .Xr cap_enter 2 , @@ -96,7 +99,8 @@ associated with file descriptors. .Xr pdwait4 2 , .Xr read 2 , .Xr shm_open 2 , -.Xr write 2 +.Xr write 2 , +.Xr procdesc 4 , .Sh HISTORY .Nm first appeared in diff --git a/share/man/man4/procdesc.4 b/share/man/man4/procdesc.4 new file mode 100644 index 0000000..f7477da --- /dev/null +++ b/share/man/man4/procdesc.4 @@ -0,0 +1,93 @@ +.\" +.\" 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 August 21, 2013 +.Dt PROCDESC 4 +.Os +.Sh NAME +.Nm procdesc +.Nd process descriptor facility +.Sh SYNOPSIS +.Cd "options PROCDESC" +.Sh DESCRIPTION +.Nm +is a file-descriptor-oriented interface to process signalling and control, +which supplements historic +.Ux +.Xr fork 2 , +.Xr kill 2 , +and +.Xr wait4 2 +primitives with +new system calls such as +.Xr pdfork 2 , +.Xr pdkill 2 , +and +.Xr pdwait4 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 wait4 2 , +.Xr pdfork 2 , +.Xr pdgetpid 2 , +.Xr pdkill 2 , +.Xr pdwait4 , +.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 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. +.Sh BUGS +.Nm +is considered experimental in +.Fx . |
