NAME¶
procdesc
—
process descriptor facility
SYNOPSIS¶
options PROCDESC
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),
wait4(2),
pdfork(2),
pdgetpid(2),
pdkill(2),
pdwait4(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.
BUGS¶
procdesc
is considered experimental in
FreeBSD.