235 lines
6.8 KiB
C
235 lines
6.8 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_SEMBUF_H
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#define IPC_SEMBUF_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_SEMID64_DS
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#if defined(__mips__)
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#define HAVE_SEMID64_DS
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/*
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* The semid64_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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* Pad space is left for 2 miscellaneous 64-bit values on mips64,
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* but used for the upper 32 bit of the time values on mips32.
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*/
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#if __BITS_PER_LONG == 64
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struct semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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long sem_otime; /* last semop time */
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long sem_ctime; /* last change time */
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unsigned long sem_nsems; /* no. of semaphores in array */
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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_SEMID64_DS_TIME_HIGH
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struct semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_ctime; /* last change time */
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unsigned long sem_nsems; /* no. of semaphores in array */
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unsigned long sem_otime_high;
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unsigned long sem_ctime_high;
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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_SEMID64_DS
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/*
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* The semid64_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 semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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#if __BITS_PER_LONG == 64
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long sem_otime; /* last semop time */
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long sem_ctime; /* last change time */
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#else
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#define HAVE_SEMID64_DS_TIME_HIGH
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unsigned long sem_otime_high;
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_ctime_high;
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unsigned long sem_ctime; /* last change time */
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#endif
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unsigned long sem_nsems; /* no. of semaphores in array */
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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_SEMID64_DS
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/*
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* The semid64_ds structure for PPC 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 32/64-bit values
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*/
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struct semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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#ifndef __powerpc64__
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#define HAVE_SEMID64_DS_TIME_HIGH
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unsigned long sem_otime_high;
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_ctime_high;
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unsigned long sem_ctime; /* last change time */
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#else
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long sem_otime; /* last semop time */
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long sem_ctime; /* last change time */
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#endif
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unsigned long sem_nsems; /* no. of semaphores in array */
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unsigned long __unused3;
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unsigned long __unused4;
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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_SEMID64_DS
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/*
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* The semid64_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 semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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#if defined(__arch64__)
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long sem_otime; /* last semop time */
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long sem_ctime; /* last change time */
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#else
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#define HAVE_SEMID64_DS_TIME_HIGH
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unsigned long sem_otime_high;
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_ctime_high;
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unsigned long sem_ctime; /* last change time */
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#endif
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unsigned long sem_nsems; /* no. of semaphores in array */
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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__)
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#define HAVE_SEMID64_DS
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/*
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* The semid64_ds structure for x86 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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* x86_64 and x32 incorrectly added padding here, so the structures
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* are still incompatible with the padding on x86.
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*/
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struct semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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#ifdef __i386__
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#define HAVE_SEMID64_DS_TIME_HIGH
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_otime_high;
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unsigned long sem_ctime; /* last change time */
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unsigned long sem_ctime_high;
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#else
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__kernel_long_t sem_otime; /* last semop time */
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__kernel_ulong_t __unused1;
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__kernel_long_t sem_ctime; /* last change time */
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__kernel_ulong_t __unused2;
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#endif
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__kernel_ulong_t sem_nsems; /* no. of semaphores in array */
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__kernel_ulong_t __unused3;
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__kernel_ulong_t __unused4;
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};
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#endif /* defined(__x86_64__) */
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#if defined(__xtensa__)
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#define HAVE_SEMID64_DS
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#define HAVE_SEMID64_DS_TIME_HIGH
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struct semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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#ifdef __XTENSA_EL__
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_otime_high;
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unsigned long sem_ctime; /* last change time */
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unsigned long sem_ctime_high;
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#else
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unsigned long sem_otime_high;
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_ctime_high;
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unsigned long sem_ctime; /* last change time */
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#endif
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unsigned long sem_nsems; /* no. of semaphores in array */
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unsigned long __unused3;
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unsigned long __unused4;
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};
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#endif /* __xtensa__ */
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#ifndef HAVE_SEMID64_DS
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/*
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* The semid64_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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* semid64_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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*
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* On big-endian systems, the padding is in the wrong place for
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* historic reasons, so user space has to reconstruct a time_t
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* value using
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*
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* user_semid_ds.sem_otime = kernel_semid64_ds.sem_otime +
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* ((long long)kernel_semid64_ds.sem_otime_high << 32)
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*
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* Pad space is left for 2 miscellaneous 32-bit values
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*/
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struct semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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#if __BITS_PER_LONG == 64
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long sem_otime; /* last semop time */
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long sem_ctime; /* last change time */
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#else
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#define HAVE_SEMID64_DS_TIME_HIGH
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_otime_high;
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unsigned long sem_ctime; /* last change time */
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unsigned long sem_ctime_high;
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#endif
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unsigned long sem_nsems; /* no. of semaphores in array */
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unsigned long __unused3;
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unsigned long __unused4;
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};
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#endif /* semid64_ds */
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#endif /* HAVE_SEMID64_DS */
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#endif /* IPC_SEMBUF_H */
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