1.\" 2.\" Copyright (c) 1995 Joerg Wunsch 3.\" 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by Joerg Wunsch 17.\" 4. The name of the developer may not be used to endorse or promote 18.\" products derived from this software without specific prior written 19.\" permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 22.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 25.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31.\" 32.\" $FreeBSD: src/lib/libcompat/4.4/cuserid.3,v 1.8.2.6 2001/12/17 10:08:29 ru Exp $ 33.\" $DragonFly: src/lib/libcompat/4.4/cuserid.3,v 1.3 2006/05/26 19:39:38 swildner Exp $ 34.\" 35.Dd April 10, 1995 36.Os 37.Dt CUSERID 3 38.Sh NAME 39.Nm cuserid 40.Nd get user name associated with effective UID 41.Sh LIBRARY 42.Lb libcompat 43.Sh SYNOPSIS 44.In stdio.h 45.Ft char * 46.Fn cuserid "char *s" 47.Sh DESCRIPTION 48.Bf -symbolic 49The 50.Fn cuserid 51function is made obsolete by 52.Xr getpwuid 3 . 53.Ef 54.Pp 55The function 56.Fn cuserid 57gets the user name associated with the effective UID of the current 58process. If the argument 59.Fa s 60is non-NULL, the name is copied to the buffer it points to, 61and that address is being returned. This buffer must provide space 62for at least 63.Em L_cuserid 64characters. 65The L_cuserid constant is defined in 66.In stdio.h . 67.Pp 68If 69.Fa s 70is NULL, an internal array is used and its address will be returned. 71.Sh RETURN VALUES 72.Fn cuserid 73returns the address of an array in which the name has been stored. 74.Pp 75If the name associated with the effective UID of the current process 76could not be found, either a null pointer will be returned, or 77(if 78.Fa s 79is non-NULL) 80the buffer 81.Fa s 82will be filled with a null string. 83.Sh SEE ALSO 84.Xr geteuid 2 , 85.Xr getpwuid 3 86