1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)setruid.3 8.1 (Berkeley) 6/2/93 33.\" $FreeBSD: src/lib/libc/compat-43/setruid.3,v 1.5.2.5 2001/12/14 18:33:49 ru Exp $ 34.\" 35.Dd June 2, 1993 36.Dt SETRUID 3 37.Os 38.Sh NAME 39.Nm setruid , 40.Nm setrgid 41.Nd set user and group ID 42.Sh LIBRARY 43.Lb libc 44.Sh SYNOPSIS 45.In unistd.h 46.Ft int 47.Fn setruid "uid_t ruid" 48.Ft int 49.Fn setrgid "gid_t rgid" 50.Sh DESCRIPTION 51The 52.Fn setruid 53function 54.Pq Fn setrgid 55sets the real user ID (group ID) of the 56current process. 57.Sh RETURN VALUES 58.Rv -std 59.Sh ERRORS 60The functions fail if: 61.Bl -tag -width Er 62.It Bq Er EPERM 63The user is not the super user and the ID 64specified is not the real or effective ID. 65.El 66.Sh COMPATIBILITY 67The use of these calls is not portable. 68Their use is discouraged; they will be removed in the future. 69.Sh SEE ALSO 70.Xr getgid 2 , 71.Xr getuid 2 , 72.Xr setegid 2 , 73.Xr seteuid 2 , 74.Xr setgid 2 , 75.Xr setuid 2 76.Sh HISTORY 77The 78.Fn setruid 79and 80.Fn setrgid 81syscalls appeared in 82.Bx 4.2 83and were dropped in 84.Bx 4.4 . 85