sys/compat/mach/mach_bootstrap.c

   1 /*      $NetBSD: mach_bootstrap.c,v 1.13 2007/12/08 18:36:13 dsl Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2002-2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Emmanuel Dreyfus
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: mach_bootstrap.c,v 1.13 2007/12/08 18:36:13 dsl Exp $");
  34
  35 #include <sys/types.h>
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/signal.h>
  39 #include <sys/proc.h>
  40
  41 #include <compat/mach/mach_types.h>
  42 #include <compat/mach/mach_message.h>
  43 #include <compat/mach/mach_port.h>
  44 #include <compat/mach/mach_bootstrap.h>
  45 #include <compat/mach/mach_errno.h>
  46 #include <compat/mach/mach_services.h>
  47
  48 int
  49 mach_bootstrap_look_up(struct mach_trap_args *args)
  50 {
  51         mach_bootstrap_look_up_request_t *req = args->smsg;
  52         mach_bootstrap_look_up_reply_t *rep = args->rmsg;
  53         struct lwp *l = args->l;
  54         size_t *msglen = args->rsize;
  55         const char service_name[] = "lookup\021"; /* XXX Why */
  56         int service_name_len;
  57         struct mach_right *mr;
  58         size_t len;
  59
  60         /* The trailer is word aligned  */
  61         service_name_len = (sizeof(service_name) + 1) & ~0x7UL;
  62         len = sizeof(*rep) - sizeof(rep->rep_service_name) + service_name_len;
  63
  64         if (len > *msglen)
  65                 return mach_msg_error(args, EINVAL);
  66         *msglen = len;
  67
  68         mr = mach_right_get(NULL, l, MACH_PORT_TYPE_DEAD_NAME, 0);
  69
  70         mach_set_header(rep, req, *msglen);
  71
  72         rep->rep_count = 1;
  73         rep->rep_bootstrap_port = mr->mr_name;
  74         strncpy((char *)rep->rep_service_name, service_name,
  75             service_name_len);
  76
  77         mach_set_trailer(rep, *msglen);
  78
  79         return 0;
  80 }
  81