include/linux/time32.h

#ifndef _LINUX_TIME32_H
#define _LINUX_TIME32_H
/*
 * These are all interfaces based on the old time_t definition
 * that overflows in 2038 on 32-bit architectures. New code
 * should use the replacements based on time64_t and timespec64.
 *
 * Any interfaces in here that become unused as we migrate
 * code to time64_t should get removed.
 */

#include <linux/time64.h>
#include <linux/timex.h>

#include <vdso/time32.h>

struct old_itimerspec32 {
	struct old_timespec32 it_interval;
	struct old_timespec32 it_value;
};

struct old_utimbuf32 {
	old_time32_t	actime;
	old_time32_t	modtime;
};

struct old_timex32 {
	u32 modes;
	s32 offset;
	s32 freq;
	s32 maxerror;
	s32 esterror;
	s32 status;
	s32 constant;
	s32 precision;
	s32 tolerance;
	struct old_timeval32 time;
	s32 tick;
	s32 ppsfreq;
	s32 jitter;
	s32 shift;
	s32 stabil;
	s32 jitcnt;
	s32 calcnt;
	s32 errcnt;
	s32 stbcnt;
	s32 tai;

	s32:32; s32:32; s32:32; s32:32;
	s32:32; s32:32; s32:32; s32:32;
	s32:32; s32:32; s32:32;
};

extern int get_old_timespec32(struct timespec64 *, const void __user *);
extern int put_old_timespec32(const struct timespec64 *, void __user *);
extern int get_old_itimerspec32(struct itimerspec64 *its,
			const struct old_itimerspec32 __user *uits);
extern int put_old_itimerspec32(const struct itimerspec64 *its,
			struct old_itimerspec32 __user *uits);
struct __kernel_timex;
int get_old_timex32(struct __kernel_timex *, const struct old_timex32 __user *);
int put_old_timex32(struct old_timex32 __user *, const struct __kernel_timex *);

/**
 * ns_to_kernel_old_timeval - Convert nanoseconds to timeval
 * @nsec:	the nanoseconds value to be converted
 *
 * Returns the timeval representation of the nsec parameter.
 */
extern struct __kernel_old_timeval ns_to_kernel_old_timeval(s64 nsec);

#endif