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.\"     @(#)setruid.3	8.1 (Berkeley) 6/2/93
.\" $FreeBSD$
.\"
.Dd June 2, 1993
.Dt SETRUID 3
.Os
.Sh NAME
.Nm setruid ,
.Nm setrgid
.Nd set user and group ID
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.Fd #include <unistd.h>
.Ft int
.Fn setruid "uid_t ruid"
.Ft int
.Fn setrgid "gid_t rgid"
.Sh DESCRIPTION
The
.Fn setruid
function
.Pq Fn setrgid
sets the real user ID (group ID) of the
current process.
.Sh RETURN VALUES
Upon success, these functions return 0;
otherwise \-1 is returned.
.Pp
If the user is not the super user, or the uid
specified is not the real or effective ID, these
functions return \-1.
.Pp
The use of these calls is not portable.
Their use is discouraged; they will be removed in the future.
.Sh SEE ALSO
.Xr getgid 2 ,
.Xr getuid 2 ,
.Xr setegid 2 ,
.Xr seteuid 2 ,
.Xr setgid 2 ,
.Xr setuid 2
.Sh HISTORY
The
.Fn setruid
and
.Fn setrgid
syscalls appeared in
.Bx 4.2
and were dropped in
.Bx 4.4 .