root/arch/x86/include/uapi/asm/sembuf.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _ASM_X86_SEMBUF_H
#define _ASM_X86_SEMBUF_H

#include <asm/ipcbuf.h>

/*
 * The semid64_ds structure for x86 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
 *
 * x86_64 and x32 incorrectly added padding here, so the structures
 * are still incompatible with the padding on x86.
 */
struct semid64_ds {
        struct ipc64_perm sem_perm;     /* permissions .. see ipc.h */
#ifdef __i386__
        unsigned long   sem_otime;      /* last semop time */
        unsigned long   sem_otime_high;
        unsigned long   sem_ctime;      /* last change time */
        unsigned long   sem_ctime_high;
#else
        __kernel_long_t sem_otime;      /* last semop time */
        __kernel_ulong_t __unused1;
        __kernel_long_t sem_ctime;      /* last change time */
        __kernel_ulong_t __unused2;
#endif
        __kernel_ulong_t sem_nsems;     /* no. of semaphores in array */
        __kernel_ulong_t __unused3;
        __kernel_ulong_t __unused4;
};

#endif /* _ASM_X86_SEMBUF_H */