// SPDX-License-Identifier: GPL-2.0
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/*
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* 32 bit compatibility code for System V IPC
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*
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* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
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* Copyright (C) 2000 VA Linux Co
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* Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
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* Copyright (C) 2000 Hewlett-Packard Co.
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* Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
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* Copyright (C) 2000 Gerhard Tonn (ton@de.ibm.com)
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* Copyright (C) 2000-2002 Andi Kleen, SuSE Labs (x86-64 port)
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* Copyright (C) 2000 Silicon Graphics, Inc.
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* Copyright (C) 2001 IBM
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* Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation
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* Copyright (C) 2004 Arnd Bergmann (arnd@arndb.de)
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*
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* This code is collected from the versions for sparc64, mips64, s390x, ia64,
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* ppc64 and x86_64, all of which are based on the original sparc64 version
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* by Jakub Jelinek.
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*
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*/
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#include <linux/compat.h>
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#include <linux/errno.h>
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#include <linux/highuid.h>
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#include <linux/init.h>
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#include <linux/msg.h>
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#include <linux/shm.h>
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#include <linux/syscalls.h>
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#include <linux/ptrace.h>
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#include <linux/mutex.h>
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#include <linux/uaccess.h>
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#include "util.h"
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int get_compat_ipc64_perm(struct ipc64_perm *to,
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struct compat_ipc64_perm __user *from)
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{
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struct compat_ipc64_perm v;
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if (copy_from_user(&v, from, sizeof(v)))
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return -EFAULT;
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to->uid = v.uid;
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to->gid = v.gid;
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to->mode = v.mode;
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return 0;
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}
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int get_compat_ipc_perm(struct ipc64_perm *to,
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struct compat_ipc_perm __user *from)
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{
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struct compat_ipc_perm v;
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if (copy_from_user(&v, from, sizeof(v)))
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return -EFAULT;
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to->uid = v.uid;
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to->gid = v.gid;
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to->mode = v.mode;
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return 0;
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}
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void to_compat_ipc64_perm(struct compat_ipc64_perm *to, struct ipc64_perm *from)
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{
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to->key = from->key;
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to->uid = from->uid;
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to->gid = from->gid;
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to->cuid = from->cuid;
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to->cgid = from->cgid;
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to->mode = from->mode;
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to->seq = from->seq;
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}
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void to_compat_ipc_perm(struct compat_ipc_perm *to, struct ipc64_perm *from)
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{
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to->key = from->key;
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SET_UID(to->uid, from->uid);
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SET_GID(to->gid, from->gid);
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SET_UID(to->cuid, from->cuid);
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SET_GID(to->cgid, from->cgid);
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to->mode = from->mode;
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to->seq = from->seq;
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}
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