1*2fe8fb19SBen Gras.\" $NetBSD: getpid.2,v 1.17 2010/04/03 15:13:43 jruoho Exp $ 2*2fe8fb19SBen Gras.\" 3*2fe8fb19SBen Gras.\" Copyright (c) 1980, 1991, 1993 4*2fe8fb19SBen Gras.\" The Regents of the University of California. All rights reserved. 5*2fe8fb19SBen Gras.\" 6*2fe8fb19SBen Gras.\" Redistribution and use in source and binary forms, with or without 7*2fe8fb19SBen Gras.\" modification, are permitted provided that the following conditions 8*2fe8fb19SBen Gras.\" are met: 9*2fe8fb19SBen Gras.\" 1. Redistributions of source code must retain the above copyright 10*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer. 11*2fe8fb19SBen Gras.\" 2. Redistributions in binary form must reproduce the above copyright 12*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer in the 13*2fe8fb19SBen Gras.\" documentation and/or other materials provided with the distribution. 14*2fe8fb19SBen Gras.\" 3. Neither the name of the University nor the names of its contributors 15*2fe8fb19SBen Gras.\" may be used to endorse or promote products derived from this software 16*2fe8fb19SBen Gras.\" without specific prior written permission. 17*2fe8fb19SBen Gras.\" 18*2fe8fb19SBen Gras.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19*2fe8fb19SBen Gras.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20*2fe8fb19SBen Gras.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21*2fe8fb19SBen Gras.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22*2fe8fb19SBen Gras.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23*2fe8fb19SBen Gras.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24*2fe8fb19SBen Gras.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25*2fe8fb19SBen Gras.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26*2fe8fb19SBen Gras.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27*2fe8fb19SBen Gras.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28*2fe8fb19SBen Gras.\" SUCH DAMAGE. 29*2fe8fb19SBen Gras.\" 30*2fe8fb19SBen Gras.\" @(#)getpid.2 8.1 (Berkeley) 6/4/93 31*2fe8fb19SBen Gras.\" 32*2fe8fb19SBen Gras.Dd April 3, 2010 33*2fe8fb19SBen Gras.Dt GETPID 2 34*2fe8fb19SBen Gras.Os 35*2fe8fb19SBen Gras.Sh NAME 36*2fe8fb19SBen Gras.Nm getpid , 37*2fe8fb19SBen Gras.Nm getppid 38*2fe8fb19SBen Gras.Nd get parent or calling process identification 39*2fe8fb19SBen Gras.Sh LIBRARY 40*2fe8fb19SBen Gras.Lb libc 41*2fe8fb19SBen Gras.Sh SYNOPSIS 42*2fe8fb19SBen Gras.In unistd.h 43*2fe8fb19SBen Gras.Ft pid_t 44*2fe8fb19SBen Gras.Fn getpid void 45*2fe8fb19SBen Gras.Ft pid_t 46*2fe8fb19SBen Gras.Fn getppid void 47*2fe8fb19SBen Gras.Sh DESCRIPTION 48*2fe8fb19SBen Gras.Fn getpid 49*2fe8fb19SBen Grasreturns 50*2fe8fb19SBen Grasthe process ID of 51*2fe8fb19SBen Grasthe calling process. 52*2fe8fb19SBen GrasThe ID is guaranteed to be unique and is 53*2fe8fb19SBen Grasuseful for constructing temporary file names. 54*2fe8fb19SBen Gras.Pp 55*2fe8fb19SBen Gras.Fn getppid 56*2fe8fb19SBen Grasreturns the process ID of the parent 57*2fe8fb19SBen Grasof the calling process. 58*2fe8fb19SBen Gras.Sh ERRORS 59*2fe8fb19SBen GrasThe 60*2fe8fb19SBen Gras.Fn getpid 61*2fe8fb19SBen Grasand 62*2fe8fb19SBen Gras.Fn getppid 63*2fe8fb19SBen Grasfunctions are always successful, and no return value is reserved to 64*2fe8fb19SBen Grasindicate an error. 65*2fe8fb19SBen Gras.Sh SEE ALSO 66*2fe8fb19SBen Gras.Xr gethostid 3 67*2fe8fb19SBen Gras.Sh STANDARDS 68*2fe8fb19SBen Gras.Fn getpid 69*2fe8fb19SBen Grasand 70*2fe8fb19SBen Gras.Fn getppid 71*2fe8fb19SBen Grasconform to 72*2fe8fb19SBen Gras.St -p1003.1-90 . 73*2fe8fb19SBen Gras.Sh HISTORY 74*2fe8fb19SBen GrasThe 75*2fe8fb19SBen Gras.Fn getpid 76*2fe8fb19SBen Grasfunction appeared in 77*2fe8fb19SBen Gras.At v5 . 78