sys/compat/common/sysv_shm_50.c

   1 /*      $NetBSD: sysv_shm_50.c,v 1.1.2.2 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  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by the NetBSD
  22  *      Foundation, Inc. and its contributors.
  23  * 4. Neither the name of The NetBSD Foundation nor the names of its
  24  *    contributors may be used to endorse or promote products derived
  25  *    from this software without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGE.
  38  */
  39
  40 #include <sys/cdefs.h>
  41 __KERNEL_RCSID(0, "$NetBSD: sysv_shm_50.c,v 1.1.2.2 2008/11/09 23:28:36 christos Exp $");
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/signal.h>
  46 #include <sys/proc.h>
  47 #include <sys/mount.h>
  48 #include <sys/shm.h>
  49
  50 #ifndef SYSVSHM
  51 #define SYSVSHM
  52 #endif
  53
  54 #include <sys/syscallargs.h>
  55
  56 #include <compat/sys/shm.h>
  57
  58 int
  59 compat_50_sys___shmctl13(struct lwp *l, const struct compat_50_sys___shmctl13_args *uap, register_t *retval)
  60 {
  61         /* {
  62                 syscallarg(int) shmid;
  63                 syscallarg(int) cmd;
  64                 syscallarg(struct shmid_ds13 *) buf;
  65         } */
  66         struct shmid_ds shmbuf;
  67         struct shmid_ds13 oshmbuf;
  68         int cmd, error;
  69
  70         cmd = SCARG(uap, cmd);
  71
  72         if (cmd == IPC_SET) {
  73                 error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf));
  74                 if (error)
  75                         return (error);
  76                 __shmid_ds13_to_native(&oshmbuf, &shmbuf);
  77         }
  78
  79         error = shmctl1(l, SCARG(uap, shmid), cmd,
  80             (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL);
  81
  82         if (error == 0 && cmd == IPC_STAT) {
  83                 __native_to_shmid_ds13(&shmbuf, &oshmbuf);
  84                 error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf));
  85         }
  86
  87         return (error);
  88 }