// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2020 Linaro Limited. All rights reserved. * Author: Viresh Kumar */ #ifndef IPC_SHMBUF_H #define IPC_SHMBUF_H #include "lapi/posix_types.h" #include #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 */