196 lines
4.5 KiB
C
196 lines
4.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2020 Linaro Limited. All rights reserved.
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* Author: Viresh Kumar <viresh.kumar@linaro.org>
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*/
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#ifndef IPCBUF_H
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#define IPCBUF_H
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#include "config.h"
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#include "lapi/posix_types.h"
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#ifndef HAVE_STRUCT_IPC64_PERM
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#if defined(__hppa__)
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#define HAVE_IPC64_PERM
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/*
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* The ipc64_perm structure for PA-RISC is almost identical to
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* kern_ipc_perm as we have always had 32-bit UIDs and GIDs in the kernel.
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* 'seq' has been changed from long to int so that it's the same size
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* on 64-bit kernels as on 32-bit ones.
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*/
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struct ipc64_perm
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{
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__kernel_key_t key;
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__kernel_uid_t uid;
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__kernel_gid_t gid;
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__kernel_uid_t cuid;
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__kernel_gid_t cgid;
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#if __BITS_PER_LONG != 64
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unsigned short int __pad1;
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#endif
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__kernel_mode_t mode;
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unsigned short int __pad2;
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unsigned short int seq;
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unsigned int __pad3;
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unsigned long long int __unused1;
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unsigned long long int __unused2;
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};
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#endif /* __hppa__ */
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#if defined(__powerpc__) || defined(__powerpc64__)
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#define HAVE_IPC64_PERM
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/*
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* The ipc64_perm structure for the powerpc is identical to
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* kern_ipc_perm as we have always had 32-bit UIDs and GIDs in the
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* kernel. Note extra padding because this structure is passed back
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* and forth between kernel and user space. Pad space is left for:
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* - 1 32-bit value to fill up for 8-byte alignment
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* - 2 miscellaneous 64-bit values
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*/
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struct ipc64_perm
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{
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__kernel_key_t key;
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__kernel_uid_t uid;
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__kernel_gid_t gid;
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__kernel_uid_t cuid;
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__kernel_gid_t cgid;
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__kernel_mode_t mode;
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unsigned int seq;
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unsigned int __pad1;
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unsigned long long __unused1;
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unsigned long long __unused2;
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};
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#endif /* defined(__powerpc__) || defined(__powerpc64__) */
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#if defined(__s390__)
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#define HAVE_IPC64_PERM
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/*
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* The user_ipc_perm structure for S/390 architecture.
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* Note extra padding because this structure is passed back and forth
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* between kernel and user space.
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*
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* Pad space is left for:
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* - 32-bit mode_t and seq
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* - 2 miscellaneous 32-bit values
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*/
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struct ipc64_perm
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{
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__kernel_key_t key;
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__kernel_uid32_t uid;
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__kernel_gid32_t gid;
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__kernel_uid32_t cuid;
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__kernel_gid32_t cgid;
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__kernel_mode_t mode;
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unsigned short __pad1;
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unsigned short seq;
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#ifndef __s390x__
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unsigned short __pad2;
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#endif /* ! __s390x__ */
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unsigned long __unused1;
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unsigned long __unused2;
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};
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#endif /* defined(__powerpc__) || defined(__powerpc64__) */
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#if defined(__sparc__)
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#define HAVE_IPC64_PERM
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/*
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* The ipc64_perm structure for sparc/sparc64 architecture.
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* Note extra padding because this structure is passed back and forth
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* between kernel and user space.
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*
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* Pad space is left for:
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* - 32-bit seq
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* - on sparc for 32 bit mode (it is 32 bit on sparc64)
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* - 2 miscellaneous 64-bit values
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*/
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struct ipc64_perm
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{
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__kernel_key_t key;
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__kernel_uid32_t uid;
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__kernel_gid32_t gid;
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__kernel_uid32_t cuid;
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__kernel_gid32_t cgid;
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#ifndef __arch64__
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unsigned short __pad0;
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#endif
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__kernel_mode_t mode;
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unsigned short __pad1;
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unsigned short seq;
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unsigned long long __unused1;
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unsigned long long __unused2;
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};
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#endif /* __sparc__ */
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#if defined(__xtensa__)
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#define HAVE_IPC64_PERM
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/*
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* Pad space is left for:
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* - 32-bit mode_t and seq
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* - 2 miscellaneous 32-bit values
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file "COPYING" in the main directory of
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* this archive for more details.
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*/
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struct ipc64_perm
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{
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__kernel_key_t key;
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__kernel_uid32_t uid;
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__kernel_gid32_t gid;
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__kernel_uid32_t cuid;
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__kernel_gid32_t cgid;
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__kernel_mode_t mode;
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unsigned long seq;
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unsigned long __unused1;
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unsigned long __unused2;
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};
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#endif /* __xtensa__ */
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#ifndef HAVE_IPC64_PERM
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/*
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* The generic ipc64_perm structure:
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* Note extra padding because this structure is passed back and forth
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* between kernel and user space.
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*
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* ipc64_perm was originally meant to be architecture specific, but
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* everyone just ended up making identical copies without specific
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* optimizations, so we may just as well all use the same one.
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*
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* Pad space is left for:
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* - 32-bit mode_t on architectures that only had 16 bit
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* - 32-bit seq
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* - 2 miscellaneous 32-bit values
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*/
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struct ipc64_perm {
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__kernel_key_t key;
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__kernel_uid32_t uid;
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__kernel_gid32_t gid;
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__kernel_uid32_t cuid;
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__kernel_gid32_t cgid;
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__kernel_mode_t mode;
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/* pad if mode_t is u16: */
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unsigned char __pad1[4 - sizeof(__kernel_mode_t)];
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unsigned short seq;
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unsigned short __pad2;
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__kernel_ulong_t __unused1;
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__kernel_ulong_t __unused2;
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};
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#endif /* ipc64_perm */
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#endif /* HAVE_IPC64_PERM */
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#endif /* IPCBUF_H */
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