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 LIBRARY 41.Lb libcompat 42.Sh SYNOPSIS 43.In stdio.h 44.Ft char * 45.Fn cuserid "char *s" 46.Sh DESCRIPTION 47.Bf -symbolic 48The 49.Fn cuserid 50function is made obsolete by 51.Xr getpwuid 3 . 52.Ef 53.Pp 54The function 55.Fn cuserid 56gets the user name associated with the effective UID of the current 57process. 58If the argument 59.Fa s 60is non-NULL, the name is copied to the buffer it points to, 61and that address is being returned. 62This buffer must provide space 63for at least 64.Em L_cuserid 65characters. 66The L_cuserid constant is defined in 67.In stdio.h . 68.Pp 69If 70.Fa s 71is NULL, an internal array is used and its address will be returned. 72.Sh RETURN VALUES 73The 74.Fn cuserid 75function returns the address of an array in which the name has been stored. 76.Pp 77If the name associated with the effective UID of the current process 78could not be found, either a null pointer will be returned, or 79(if 80.Fa s 81is non-NULL) 82the buffer 83.Fa s 84will be filled with a null string. 85.Sh SEE ALSO 86.Xr geteuid 2 , 87.Xr getpwuid 3 88