.\" Copyright (c) 2001 Evan Sarmiento.
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.Dd July 11, 2001
.Dt PFIND 9
.Os
.Sh NAME
.Nm pfind , zpfind
.Nd locate a process by number
.Sh SYNOPSIS
.In sys/param.h
.In sys/proc.h
.Ft "struct proc *"
.Fn pfind "pid_t pid"
.Ft "struct proc *"
.Fn zpfind "pid_t pid"
.Sh DESCRIPTION
.Fn pfind
takes a
.Fa pid
as its argument and returns a pointer to the
.Vt proc
structure whose PID is specified in the argument only if the
.Fa pid
is on the
.Va allproc
list.
.Pp
.Fn zpfind
takes a
.Fa pid
as its argument.
If
.Fn zpfind
finds a process whose PID is equal to that of argument
and is a zombie process, meaning that it must reside on the
.Va zombproc
list,
.Fn zpfind
returns a pointer to that
.Vt proc
structure.
.Pp
Both
.Fn pfind
and
.Fn zpfind
lock the
.Vt proc
structure that is returned using
.Fn PROC_LOCK "p" .
.Sh RETURN VALUES
.Fn pfind
and
.Fn zpfind
return a pointer to a
.Vt proc
structure on success and a
.Dv NULL
on failure.
.Sh SEE ALSO
.Xr pgfind 9
.Sh AUTHORS
This manual page was written by
.An Evan Sarmiento Aq kaworu@sektor7.ath.cx .