grant_privilege

/*
 *  call-seq:
 *     Process::UID.grant_privilege(integer)   => fixnum
 *     Process::UID.eid= integer               => fixnum
 *
 *  Set the effective user ID, and if possible, the saved user ID of
 *  the process to the given _integer_. Returns the new
 *  effective user ID. Not available on all platforms.
 *
 *     [Process.uid, Process.euid]          #=> [0, 0]
 *     Process::UID.grant_privilege(31)     #=> 31
 *     [Process.uid, Process.euid]          #=> [0, 31]
 */

static VALUE
p_uid_grant_privilege(obj, id)
    VALUE obj, id;
{
    return rb_seteuid_core(NUM2INT(id));
}