274 lines
8.5 KiB
C
274 lines
8.5 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 IPC_SHMBUF_H
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#define IPC_SHMBUF_H
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#include "lapi/posix_types.h"
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#include <sys/sem.h>
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#include "tst_timer.h"
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#include "ipcbuf.h"
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#ifndef HAVE_STRUCT_SHMID64_DS
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#if defined(__mips__)
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#define HAVE_SHMID64_DS
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/*
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* The shmid64_ds structure for the MIPS 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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* As MIPS was lacking proper padding after shm_?time, we use 48 bits
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* of the padding at the end to store a few additional bits of the time.
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* libc implementations need to take care to convert this into a proper
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* data structure when moving to 64-bit time_t.
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*/
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#if __BITS_PER_LONG == 64
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struct shmid64_ds {
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struct ipc64_perm shm_perm; /* operation perms */
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size_t shm_segsz; /* size of segment (bytes) */
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long shm_atime; /* last attach time */
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long shm_dtime; /* last detach time */
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long shm_ctime; /* last change time */
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__kernel_pid_t shm_cpid; /* pid of creator */
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__kernel_pid_t shm_lpid; /* pid of last operator */
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unsigned long shm_nattch; /* no. of current attaches */
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unsigned long __unused1;
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unsigned long __unused2;
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};
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#else
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#define HAVE_SHMID64_DS_TIME_HIGH
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struct shmid64_ds {
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struct ipc64_perm shm_perm; /* operation perms */
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size_t shm_segsz; /* size of segment (bytes) */
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unsigned long shm_atime; /* last attach time */
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unsigned long shm_dtime; /* last detach time */
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unsigned long shm_ctime; /* last change time */
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__kernel_pid_t shm_cpid; /* pid of creator */
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__kernel_pid_t shm_lpid; /* pid of last operator */
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unsigned long shm_nattch; /* no. of current attaches */
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unsigned short shm_atime_high;
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unsigned short shm_dtime_high;
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unsigned short shm_ctime_high;
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unsigned short __unused1;
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};
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#endif
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#endif /* __mips__ */
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#if defined(__hppa__)
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#define HAVE_SHMID64_DS
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/*
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* The shmid64_ds structure for parisc 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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* - 2 miscellaneous 32-bit values
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*/
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struct shmid64_ds {
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struct ipc64_perm shm_perm; /* operation perms */
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#if __BITS_PER_LONG == 64
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long shm_atime; /* last attach time */
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long shm_dtime; /* last detach time */
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long shm_ctime; /* last change time */
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#else
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#define HAVE_SHMID64_DS_TIME_HIGH
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unsigned long shm_atime_high;
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unsigned long shm_atime; /* last attach time */
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unsigned long shm_dtime_high;
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unsigned long shm_dtime; /* last detach time */
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unsigned long shm_ctime_high;
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unsigned long shm_ctime; /* last change time */
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unsigned int __pad4;
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#endif
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__kernel_size_t shm_segsz; /* size of segment (bytes) */
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__kernel_pid_t shm_cpid; /* pid of creator */
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__kernel_pid_t shm_lpid; /* pid of last operator */
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unsigned long shm_nattch; /* no. of current attaches */
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unsigned long __unused1;
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unsigned long __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_SHMID64_DS
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/*
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* The shmid64_ds structure for PPC architecture.
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*
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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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* - 2 miscellaneous 32-bit values
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*/
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struct shmid64_ds {
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struct ipc64_perm shm_perm; /* operation perms */
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#ifdef __powerpc64__
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long shm_atime; /* last attach time */
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long shm_dtime; /* last detach time */
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long shm_ctime; /* last change time */
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#else
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#define HAVE_SHMID64_DS_TIME_HIGH
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unsigned long shm_atime_high;
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unsigned long shm_atime; /* last attach time */
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unsigned long shm_dtime_high;
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unsigned long shm_dtime; /* last detach time */
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unsigned long shm_ctime_high;
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unsigned long shm_ctime; /* last change time */
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unsigned long __unused4;
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#endif
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size_t shm_segsz; /* size of segment (bytes) */
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__kernel_pid_t shm_cpid; /* pid of creator */
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__kernel_pid_t shm_lpid; /* pid of last operator */
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unsigned long shm_nattch; /* no. of current attaches */
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unsigned long __unused5;
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unsigned long __unused6;
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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_SHMID64_DS
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/*
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* The shmid64_ds structure for sparc 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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* - 2 miscellaneous 32-bit values
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*/
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struct shmid64_ds {
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struct ipc64_perm shm_perm; /* operation perms */
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#if defined(__arch64__)
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long shm_atime; /* last attach time */
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long shm_dtime; /* last detach time */
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long shm_ctime; /* last change time */
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#else
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#define HAVE_SHMID64_DS_TIME_HIGH
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unsigned long shm_atime_high;
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unsigned long shm_atime; /* last attach time */
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unsigned long shm_dtime_high;
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unsigned long shm_dtime; /* last detach time */
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unsigned long shm_ctime_high;
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unsigned long shm_ctime; /* last change time */
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#endif
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size_t shm_segsz; /* size of segment (bytes) */
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__kernel_pid_t shm_cpid; /* pid of creator */
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__kernel_pid_t shm_lpid; /* pid of last operator */
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unsigned long shm_nattch; /* no. of current attaches */
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unsigned long __unused1;
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unsigned long __unused2;
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};
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#endif /* __sparc__ */
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#if defined(__x86_64__) && defined(__ILP32__)
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#define HAVE_SHMID64_DS
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/*
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* The shmid64_ds structure for x86 architecture with x32 ABI.
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*
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* On x86-32 and x86-64 we can just use the generic definition, but
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* x32 uses the same binary layout as x86_64, which is differnet
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* from other 32-bit architectures.
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*/
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struct shmid64_ds {
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struct ipc64_perm shm_perm; /* operation perms */
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size_t shm_segsz; /* size of segment (bytes) */
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__kernel_long_t shm_atime; /* last attach time */
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__kernel_long_t shm_dtime; /* last detach time */
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__kernel_long_t shm_ctime; /* last change time */
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__kernel_pid_t shm_cpid; /* pid of creator */
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__kernel_pid_t shm_lpid; /* pid of last operator */
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__kernel_ulong_t shm_nattch; /* no. of current attaches */
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__kernel_ulong_t __unused4;
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__kernel_ulong_t __unused5;
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};
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#endif /* defined(__x86_64__) && defined(__ILP32__) */
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#if defined(__xtensa__)
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#define HAVE_SHMID64_DS
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#define HAVE_SHMID64_DS_TIME_HIGH
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/*
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* The shmid64_ds structure for Xtensa 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, but the padding is on the wrong
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* side for big-endian xtensa, for historic reasons.
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*
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* Pad space is left for:
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* - 2 miscellaneous 32-bit values
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*/
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struct shmid64_ds {
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struct ipc64_perm shm_perm; /* operation perms */
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size_t shm_segsz; /* size of segment (bytes) */
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unsigned long shm_atime; /* last attach time */
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unsigned long shm_atime_high;
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unsigned long shm_dtime; /* last detach time */
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unsigned long shm_dtime_high;
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unsigned long shm_ctime; /* last change time */
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unsigned long shm_ctime_high;
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__kernel_pid_t shm_cpid; /* pid of creator */
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__kernel_pid_t shm_lpid; /* pid of last operator */
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unsigned long shm_nattch; /* no. of current attaches */
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unsigned long __unused4;
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unsigned long __unused5;
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};
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#endif /* __xtensa__ */
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#ifndef HAVE_SHMID64_DS
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/*
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* The shmid64_ds structure for most architectures (though it came
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* from x86_32 originally). Note extra padding because this structure
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* is passed back and forth between kernel and user space.
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*
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* shmid64_ds 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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* 64 bit architectures use a 64-bit long time field here, while
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* 32 bit architectures have a pair of unsigned long values.
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* On big-endian systems, the lower half is in the wrong place.
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*
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*
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* Pad space is left for:
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* - 2 miscellaneous 32-bit values
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*/
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struct shmid64_ds {
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struct ipc64_perm shm_perm; /* operation perms */
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size_t shm_segsz; /* size of segment (bytes) */
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#if __BITS_PER_LONG == 64
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long shm_atime; /* last attach time */
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long shm_dtime; /* last detach time */
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long shm_ctime; /* last change time */
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#else
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#define HAVE_SHMID64_DS_TIME_HIGH
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unsigned long shm_atime; /* last attach time */
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unsigned long shm_atime_high;
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unsigned long shm_dtime; /* last detach time */
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unsigned long shm_dtime_high;
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unsigned long shm_ctime; /* last change time */
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unsigned long shm_ctime_high;
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#endif
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__kernel_pid_t shm_cpid; /* pid of creator */
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__kernel_pid_t shm_lpid; /* pid of last operator */
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unsigned long shm_nattch; /* no. of current attaches */
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unsigned long __unused4;
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unsigned long __unused5;
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};
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#endif /* shmid64_ds */
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#endif /* HAVE_SHMID64_DS */
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#endif /* IPC_SHMBUF_H */
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