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.\" $FreeBSD$ 33.\" 34.Dd April 10, 1995 35.Os 36.Dt CUSERID 3 37.Sh NAME 38.Nm cuserid 39.Nd get user name associated with effective UID 40.Sh SYNOPSIS 41.Fd #include <stdio.h> 42.Ft char * 43.Fn cuserid "char *s" 44.Sh DESCRIPTION 45.Bf -symbolic 46The cuserid function is made obsolete by getpwuid. 47.br 48It is available from the compatibility library, libcompat. 49.Ef 50.Pp 51The function 52.Nm cuserid 53gets the user name associated with the effective UID of the current 54process. If the argument 55.Fa s 56is non-NULL, the name is copied to the buffer it points to, 57and that address is being returned. This buffer must provide space 58for at least 59.Em L_cuserid 60characters. The L_cuserid constant is defined in 61.Pa Aq stdio.h . 62 63If 64.Fa s 65is NULL, an internal array is used and its address will be returned. 66.Sh RETURN VALUES 67.Nm cuserid 68returns the address of an array in which the name has been stored. 69 70If the name associated with the effective UID of the current process 71could not be found, either a null pointer will be returned, or 72.Po 73if 74.Fa s 75is non-NULL 76.Pc 77the buffer 78.Fa s 79will be filled with a null string. 80.Sh SEE ALSO 81.Xr geteuid 2 , 82.Xr getpwuid 3 83