NAME
procdesc —
process descriptor facility
DESCRIPTION
procdesc 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). procdesc 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), pdfork(2), pdgetpid(2), pdkill(2), pdwait4(2), kqueue(2), wait4(2), capsicum(4)
HISTORY
procdesc first appeared in
FreeBSD 9.0, and was developed at the University of
Cambridge.
AUTHORS
procdesc was developed by
Robert Watson
<rwatson@FreeBSD.org>
and Jonathan Anderson
<jonathan@FreeBSD.org>
at the University of Cambridge, and Ben Laurie
<benl@FreeBSD.org>
and Kris Kennaway
<kris@FreeBSD.org> at
Google, Inc.