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