.\"	$OpenBSD: getpid.2,v 1.9 2003/06/02 20:18:39 millert Exp $
.\"	$NetBSD: getpid.2,v 1.5 1995/02/27 12:33:12 cgd Exp $
.\"
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.\"     @(#)getpid.2	8.1 (Berkeley) 6/4/93
.\"
.Dd June 4, 1993
.Dt GETPID 2
.Os
.Sh NAME
.Nm getpid ,
.Nm getppid
.Nd get parent or calling process identification
.Sh SYNOPSIS
.Fd #include <sys/types.h>
.Fd #include <unistd.h>
.Ft pid_t
.Fn getpid void
.Ft pid_t
.Fn getppid void
.Sh DESCRIPTION
.Fn getpid
returns the process ID of the calling process.
Though the ID is guaranteed to be unique, it should
.Em NOT
be used for constructing temporary file names; see
.Xr mkstemp 3
instead.
.Pp
.Fn getppid
returns the process ID of the parent of the calling process.
.Sh ERRORS
The
.Fn getpid
and
.Fn getppid
functions are always successful, and no return value is reserved to
indicate an error.
.Sh SEE ALSO
.Xr gethostid 3
.Sh STANDARDS
.Fn getpid
and
.Fn getppid
conform to
.St -p1003.1-88 .