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.\"     @(#)setruid.3	8.1 (Berkeley) 6/2/93
.\" $FreeBSD: head/lib/libc/compat-43/setruid.3 165903 2007-01-09 00:28:16Z imp $
.\"
.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
.In 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
.Rv -std
.Sh COMPATIBILITY
The use of these calls is not portable.
Their use is discouraged; they will be removed in the future.
.Sh ERRORS
The functions fail if:
.Bl -tag -width Er
.It Bq Er EPERM
The user is not the super user and the ID
specified is not the real or effective ID.
.El
.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 .