1*2fe8fb19SBen Gras.\" $NetBSD: getuid.2,v 1.17 2010/04/05 07:44:28 wiz 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.\" @(#)getuid.2 8.1 (Berkeley) 6/4/93 31*2fe8fb19SBen Gras.\" 32*2fe8fb19SBen Gras.Dd April 3, 2010 33*2fe8fb19SBen Gras.Dt GETUID 2 34*2fe8fb19SBen Gras.Os 35*2fe8fb19SBen Gras.Sh NAME 36*2fe8fb19SBen Gras.Nm getuid , 37*2fe8fb19SBen Gras.Nm geteuid 38*2fe8fb19SBen Gras.Nd get user 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 uid_t 44*2fe8fb19SBen Gras.Fn getuid void 45*2fe8fb19SBen Gras.Ft uid_t 46*2fe8fb19SBen Gras.Fn geteuid void 47*2fe8fb19SBen Gras.Sh DESCRIPTION 48*2fe8fb19SBen GrasThe 49*2fe8fb19SBen Gras.Fn getuid 50*2fe8fb19SBen Grasfunction returns the real user ID of the calling process. 51*2fe8fb19SBen GrasThe 52*2fe8fb19SBen Gras.Fn geteuid 53*2fe8fb19SBen Grasfunction 54*2fe8fb19SBen Grasreturns the effective user ID of the calling process. 55*2fe8fb19SBen Gras.Pp 56*2fe8fb19SBen GrasThe real user ID is that of the user who has invoked the program. 57*2fe8fb19SBen GrasAs the effective user ID 58*2fe8fb19SBen Grasgives the process additional permissions during 59*2fe8fb19SBen Grasexecution of 60*2fe8fb19SBen Gras.Dq Em set-user-ID 61*2fe8fb19SBen Grasmode processes, 62*2fe8fb19SBen Gras.Fn getuid 63*2fe8fb19SBen Grasis used to determine the real-user-id of the calling process. 64*2fe8fb19SBen Gras.Sh ERRORS 65*2fe8fb19SBen GrasThe 66*2fe8fb19SBen Gras.Fn getuid 67*2fe8fb19SBen Grasand 68*2fe8fb19SBen Gras.Fn geteuid 69*2fe8fb19SBen Grasfunctions are always successful, and no return value is reserved to 70*2fe8fb19SBen Grasindicate an error. 71*2fe8fb19SBen Gras.Sh SEE ALSO 72*2fe8fb19SBen Gras.Xr getgid 2 , 73*2fe8fb19SBen Gras.Xr setreuid 2 74*2fe8fb19SBen Gras.Sh STANDARDS 75*2fe8fb19SBen GrasThe 76*2fe8fb19SBen Gras.Fn geteuid 77*2fe8fb19SBen Grasand 78*2fe8fb19SBen Gras.Fn getuid 79*2fe8fb19SBen Grasfunctions conform to 80*2fe8fb19SBen Gras.St -p1003.1-90 . 81*2fe8fb19SBen Gras.Sh HISTORY 82*2fe8fb19SBen GrasThe 83*2fe8fb19SBen Gras.Fn getuid 84*2fe8fb19SBen Grasfunction appeared in 85*2fe8fb19SBen Gras.At v4 . 86