sys/compat/common/sysv_shm_14.c

   1 /*      $NetBSD: sysv_shm_14.c,v 1.15.12.1 2008/11/09 23:28:36 christos Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: sysv_shm_14.c,v 1.15.12.1 2008/11/09 23:28:36 christos Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/signal.h>
  39 #include <sys/proc.h>
  40 #include <sys/mount.h>
  41 #include <sys/shm.h>
  42
  43 #ifndef SYSVSHM
  44 #define SYSVSHM
  45 #endif
  46
  47 #include <sys/syscallargs.h>
  48
  49 #include <compat/sys/shm.h>
  50
  51
  52 int
  53 compat_14_sys_shmctl(struct lwp *l, const struct compat_14_sys_shmctl_args *uap, register_t *retval)
  54 {
  55         /* {
  56                 syscallarg(int) shmid;
  57                 syscallarg(int) cmd;
  58                 syscallarg(struct shmid_ds14 *) buf;
  59         } */
  60         struct shmid_ds shmbuf;
  61         struct shmid_ds14 oshmbuf;
  62         int cmd, error;
  63
  64         cmd = SCARG(uap, cmd);
  65
  66         if (cmd == IPC_SET) {
  67                 error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf));
  68                 if (error)
  69                         return (error);
  70                 __shmid_ds14_to_native(&oshmbuf, &shmbuf);
  71         }
  72
  73         error = shmctl1(l, SCARG(uap, shmid), cmd,
  74             (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL);
  75
  76         if (error == 0 && cmd == IPC_STAT) {
  77                 __native_to_shmid_ds14(&shmbuf, &oshmbuf);
  78                 error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf));
  79         }
  80
  81         return (error);
  82 }