// SPDX-License-Identifier: GPL-2.0

  /*
   * 32 bit compatibility code for System V IPC
   *
   * Copyright (C) 1997,1998	Jakub Jelinek (jj@sunsite.mff.cuni.cz)
   * Copyright (C) 1997		David S. Miller (davem@caip.rutgers.edu)
   * Copyright (C) 1999		Arun Sharma <arun.sharma@intel.com>
   * Copyright (C) 2000		VA Linux Co
   * Copyright (C) 2000		Don Dugger <n0ano@valinux.com>
   * Copyright (C) 2000           Hewlett-Packard Co.
   * Copyright (C) 2000           David Mosberger-Tang <davidm@hpl.hp.com>
   * Copyright (C) 2000           Gerhard Tonn (ton@de.ibm.com)
   * Copyright (C) 2000-2002      Andi Kleen, SuSE Labs (x86-64 port)
   * Copyright (C) 2000		Silicon Graphics, Inc.
   * Copyright (C) 2001		IBM
   * Copyright (C) 2004		IBM Deutschland Entwicklung GmbH, IBM Corporation
   * Copyright (C) 2004		Arnd Bergmann (arnd@arndb.de)
   *
   * This code is collected from the versions for sparc64, mips64, s390x, ia64,
   * ppc64 and x86_64, all of which are based on the original sparc64 version
   * by Jakub Jelinek.
   *
   */
  #include <linux/compat.h>

  #include <linux/errno.h>
  #include <linux/highuid.h>
  #include <linux/init.h>
  #include <linux/msg.h>
  #include <linux/shm.h>

  #include <linux/syscalls.h>

  #include <linux/ptrace.h>

  #include <linux/mutex.h>

  #include <linux/uaccess.h>

  
  #include "util.h"

  int get_compat_ipc64_perm(struct ipc64_perm *to,
  			  struct compat_ipc64_perm __user *from)

  {

  	struct compat_ipc64_perm v;
  	if (copy_from_user(&v, from, sizeof(v)))

  		return -EFAULT;

  	to->uid = v.uid;
  	to->gid = v.gid;
  	to->mode = v.mode;
  	return 0;

  }

  int get_compat_ipc_perm(struct ipc64_perm *to,
  			struct compat_ipc_perm __user *from)

  {

  	struct compat_ipc_perm v;
  	if (copy_from_user(&v, from, sizeof(v)))

  		return -EFAULT;

  	to->uid = v.uid;
  	to->gid = v.gid;
  	to->mode = v.mode;
  	return 0;

  }

  void to_compat_ipc64_perm(struct compat_ipc64_perm *to, struct ipc64_perm *from)

  {

  	to->key = from->key;
  	to->uid = from->uid;
  	to->gid = from->gid;
  	to->cuid = from->cuid;
  	to->cgid = from->cgid;
  	to->mode = from->mode;
  	to->seq = from->seq;

  }

  void to_compat_ipc_perm(struct compat_ipc_perm *to, struct ipc64_perm *from)

  {

  	to->key = from->key;
  	SET_UID(to->uid, from->uid);
  	SET_GID(to->gid, from->gid);
  	SET_UID(to->cuid, from->cuid);
  	SET_GID(to->cgid, from->cgid);
  	to->mode = from->mode;
  	to->seq = from->seq;

  }