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1// SPDX-License-Identifier: GPL-2.02/*3 * 32 bit compatibility code for System V IPC4 *5 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)6 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)7 * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>8 * Copyright (C) 2000 VA Linux Co9 * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>10 * Copyright (C) 2000 Hewlett-Packard Co.11 * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>12 * Copyright (C) 2000 Gerhard Tonn (ton@de.ibm.com)13 * Copyright (C) 2000-2002 Andi Kleen, SuSE Labs (x86-64 port)14 * Copyright (C) 2000 Silicon Graphics, Inc.15 * Copyright (C) 2001 IBM16 * Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation17 * Copyright (C) 2004 Arnd Bergmann (arnd@arndb.de)18 *19 * This code is collected from the versions for sparc64, mips64, s390x, ia64,20 * ppc64 and x86_64, all of which are based on the original sparc64 version21 * by Jakub Jelinek.22 *23 */24#include <linux/compat.h>25#include <linux/errno.h>26#include <linux/highuid.h>27#include <linux/init.h>28#include <linux/msg.h>29#include <linux/shm.h>30#include <linux/syscalls.h>31#include <linux/ptrace.h>32 33#include <linux/mutex.h>34#include <linux/uaccess.h>35 36#include "util.h"37 38int get_compat_ipc64_perm(struct ipc64_perm *to,39 struct compat_ipc64_perm __user *from)40{41 struct compat_ipc64_perm v;42 if (copy_from_user(&v, from, sizeof(v)))43 return -EFAULT;44 to->uid = v.uid;45 to->gid = v.gid;46 to->mode = v.mode;47 return 0;48}49 50int get_compat_ipc_perm(struct ipc64_perm *to,51 struct compat_ipc_perm __user *from)52{53 struct compat_ipc_perm v;54 if (copy_from_user(&v, from, sizeof(v)))55 return -EFAULT;56 to->uid = v.uid;57 to->gid = v.gid;58 to->mode = v.mode;59 return 0;60}61 62void to_compat_ipc64_perm(struct compat_ipc64_perm *to, struct ipc64_perm *from)63{64 to->key = from->key;65 to->uid = from->uid;66 to->gid = from->gid;67 to->cuid = from->cuid;68 to->cgid = from->cgid;69 to->mode = from->mode;70 to->seq = from->seq;71}72 73void to_compat_ipc_perm(struct compat_ipc_perm *to, struct ipc64_perm *from)74{75 to->key = from->key;76 SET_UID(to->uid, from->uid);77 SET_GID(to->gid, from->gid);78 SET_UID(to->cuid, from->cuid);79 SET_GID(to->cgid, from->cgid);80 to->mode = from->mode;81 to->seq = from->seq;82}83