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+.\" 
+.\" Copyright (c) 1995 Joerg Wunsch
+.\" 
+.\" All rights reserved.
+.\" 
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\" This product includes software developed by Joerg Wunsch
+.\" 4. The name of the developer may not be used to endorse or promote
+.\"    products derived from this software without specific prior written
+.\"    permission.
+.\" 
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\" 
+.\" $FreeBSD$
+.\"
+.Dd April 10, 1995
+.Os
+.Dt CUSERID 3
+.Sh NAME
+.Nm cuserid
+.Nd get user name associated with effective UID
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft char *
+.Fn cuserid "char *s"
+.Sh DESCRIPTION
+.Bf -symbolic
+The cuserid function is made obsolete by getpwuid.
+.br
+It is available from the compatibility library, libcompat.
+.Ef
+.Pp
+The function
+.Nm cuserid
+gets the user name associated with the effective UID of the current
+process.  If the argument
+.Fa s
+is non-NULL, the name is copied to the buffer it points to,
+and that address is being returned.  This buffer must provide space
+for at least
+.Em L_cuserid
+characters. The L_cuserid constant is defined in
+.Pa Aq stdio.h .
+
+If
+.Fa s
+is NULL, an internal array is used and its address will be returned.
+.Sh RETURN VALUES
+.Nm cuserid
+returns the address of an array in which the name has been stored.
+
+If the name associated with the effective UID of the current process
+could not be found, either a null pointer will be returned, or
+.Po
+if
+.Fa s
+is non-NULL
+.Pc
+the buffer
+.Fa s
+will be filled with a null string.
+.Sh SEE ALSO
+.Xr geteuid 2 ,
+.Xr getpwuid 3