/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */#ifndef __ASM_GENERIC_SEMBUF_H#define __ASM_GENERIC_SEMBUF_H #include <asm/bitsperlong.h>#include <asm/ipcbuf.h> /* * The semid64_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. * * semid64_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 padding is in the wrong place for * historic reasons, so user space has to reconstruct a time_t * value using * * user_semid_ds.sem_otime = kernel_semid64_ds.sem_otime + *		((long long)kernel_semid64_ds.sem_otime_high << 32) * * Pad space is left for 2 miscellaneous 32-bit values */struct semid64_ds {	struct ipc64_perm sem_perm;	/* permissions .. see ipc.h */#if __BITS_PER_LONG == 64	long		sem_otime;	/* last semop time */	long		sem_ctime;	/* last change time */#else	unsigned long	sem_otime;	/* last semop time */	unsigned long	sem_otime_high;	unsigned long	sem_ctime;	/* last change time */	unsigned long	sem_ctime_high;#endif	unsigned long	sem_nsems;	/* no. of semaphores in array */	unsigned long	__unused3;	unsigned long	__unused4;}; #endif /* __ASM_GENERIC_SEMBUF_H */