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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2020 Linaro Limited. All rights reserved.
* Author: Viresh Kumar <viresh.kumar@linaro.org>
*/
#ifndef IPCBUF_H
#define IPCBUF_H
#include "config.h"
#include "lapi/posix_types.h"
#ifndef HAVE_IPC64_PERM
#if defined(__hppa__)
#define HAVE_IPC64_PERM
/*
* The ipc64_perm structure for PA-RISC is almost identical to
* kern_ipc_perm as we have always had 32-bit UIDs and GIDs in the kernel.
* 'seq' has been changed from long to int so that it's the same size
* on 64-bit kernels as on 32-bit ones.
*/
struct ipc64_perm
{
__kernel_key_t key;
__kernel_uid_t uid;
__kernel_gid_t gid;
__kernel_uid_t cuid;
__kernel_gid_t cgid;
#if __BITS_PER_LONG != 64
unsigned short int __pad1;
#endif
__kernel_mode_t mode;
unsigned short int __pad2;
unsigned short int seq;
unsigned int __pad3;
unsigned long long int __unused1;
unsigned long long int __unused2;
};
#endif /* __hppa__ */
#if defined(__powerpc__) || defined(__powerpc64__)
#define HAVE_IPC64_PERM
/*
* The ipc64_perm structure for the powerpc is identical to
* kern_ipc_perm as we have always had 32-bit UIDs and GIDs in the
* kernel. Note extra padding because this structure is passed back
* and forth between kernel and user space. Pad space is left for:
* - 1 32-bit value to fill up for 8-byte alignment
* - 2 miscellaneous 64-bit values
*/
struct ipc64_perm
{
__kernel_key_t key;
__kernel_uid_t uid;
__kernel_gid_t gid;
__kernel_uid_t cuid;
__kernel_gid_t cgid;
__kernel_mode_t mode;
unsigned int seq;
unsigned int __pad1;
unsigned long long __unused1;
unsigned long long __unused2;
};
#endif /* defined(__powerpc__) || defined(__powerpc64__) */
#if defined(__s390__)
#define HAVE_IPC64_PERM
/*
* The user_ipc_perm structure for S/390 architecture.
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* Pad space is left for:
* - 32-bit mode_t and seq
* - 2 miscellaneous 32-bit values
*/
struct ipc64_perm
{
__kernel_key_t key;
__kernel_uid32_t uid;
__kernel_gid32_t gid;
__kernel_uid32_t cuid;
__kernel_gid32_t cgid;
__kernel_mode_t mode;
unsigned short __pad1;
unsigned short seq;
#ifndef __s390x__
unsigned short __pad2;
#endif /* ! __s390x__ */
unsigned long __unused1;
unsigned long __unused2;
};
#endif /* defined(__powerpc__) || defined(__powerpc64__) */
#if defined(__sparc__)
#define HAVE_IPC64_PERM
/*
* The ipc64_perm structure for sparc/sparc64 architecture.
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* Pad space is left for:
* - 32-bit seq
* - on sparc for 32 bit mode (it is 32 bit on sparc64)
* - 2 miscellaneous 64-bit values
*/
struct ipc64_perm
{
__kernel_key_t key;
__kernel_uid32_t uid;
__kernel_gid32_t gid;
__kernel_uid32_t cuid;
__kernel_gid32_t cgid;
#ifndef __arch64__
unsigned short __pad0;
#endif
__kernel_mode_t mode;
unsigned short __pad1;
unsigned short seq;
unsigned long long __unused1;
unsigned long long __unused2;
};
#endif /* __sparc__ */
#if defined(__xtensa__)
#define HAVE_IPC64_PERM
/*
* Pad space is left for:
* - 32-bit mode_t and seq
* - 2 miscellaneous 32-bit values
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of
* this archive for more details.
*/
struct ipc64_perm
{
__kernel_key_t key;
__kernel_uid32_t uid;
__kernel_gid32_t gid;
__kernel_uid32_t cuid;
__kernel_gid32_t cgid;
__kernel_mode_t mode;
unsigned long seq;
unsigned long __unused1;
unsigned long __unused2;
};
#endif /* __xtensa__ */
#ifndef HAVE_IPC64_PERM
/*
* The generic ipc64_perm structure:
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* ipc64_perm was originally meant to be architecture specific, but
* everyone just ended up making identical copies without specific
* optimizations, so we may just as well all use the same one.
*
* Pad space is left for:
* - 32-bit mode_t on architectures that only had 16 bit
* - 32-bit seq
* - 2 miscellaneous 32-bit values
*/
struct ipc64_perm {
__kernel_key_t key;
__kernel_uid32_t uid;
__kernel_gid32_t gid;
__kernel_uid32_t cuid;
__kernel_gid32_t cgid;
__kernel_mode_t mode;
/* pad if mode_t is u16: */
unsigned char __pad1[4 - sizeof(__kernel_mode_t)];
unsigned short seq;
unsigned short __pad2;
__kernel_ulong_t __unused1;
__kernel_ulong_t __unused2;
};
#endif /* ipc64_perm */
#endif /* HAVE_IPC64_PERM */
#endif /* IPCBUF_H */
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