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/usr/include/x86_64-linux-gnu/sys

Name	Size	Mode	Actions
platform/	-	0755	rm
acct.h	3302	0644	edit dl rm
auxv.h	1260	0644	edit dl rm
bitypes.h	86	0644	edit dl rm
cdefs.h	26600	0644	edit dl rm
debugreg.h	3576	0644	edit dl rm
dir.h	922	0644	edit dl rm
elf.h	1024	0644	edit dl rm
epoll.h	5076	0644	edit dl rm
errno.h	19	0644	edit dl rm
eventfd.h	1400	0644	edit dl rm
fanotify.h	1292	0644	edit dl rm
fcntl.h	19	0644	edit dl rm
file.h	1675	0644	edit dl rm
fsuid.h	1188	0644	edit dl rm
gmon.h	6210	0644	edit dl rm
gmon_out.h	2577	0644	edit dl rm
inotify.h	3901	0644	edit dl rm
io.h	5086	0644	edit dl rm
ioctl.h	2027	0644	edit dl rm
ipc.h	1462	0644	edit dl rm
kd.h	1112	0644	edit dl rm
klog.h	1204	0644	edit dl rm
mman.h	5552	0644	edit dl rm
mount.h	5706	0644	edit dl rm
msg.h	2623	0644	edit dl rm
mtio.h	11111	0644	edit dl rm
param.h	3149	0644	edit dl rm
pci.h	923	0644	edit dl rm
perm.h	1127	0644	edit dl rm
personality.h	2723	0644	edit dl rm
poll.h	3025	0644	edit dl rm
prctl.h	1795	0644	edit dl rm
procfs.h	4338	0644	edit dl rm
profil.h	1959	0644	edit dl rm
ptrace.h	6282	0644	edit dl rm
queue.h	19539	0644	edit dl rm
quota.h	5173	0644	edit dl rm
random.h	1471	0644	edit dl rm
raw.h	1182	0644	edit dl rm
reboot.h	1633	0644	edit dl rm
reg.h	1827	0644	edit dl rm
resource.h	4034	0644	edit dl rm
rseq.h	6715	0644	edit dl rm
select.h	5039	0644	edit dl rm
sem.h	2660	0644	edit dl rm
sendfile.h	1806	0644	edit dl rm
shm.h	2131	0644	edit dl rm
signal.h	20	0644	edit dl rm
signalfd.h	1714	0644	edit dl rm
single_threaded.h	1182	0644	edit dl rm
socket.h	12382	0644	edit dl rm
socketvar.h	141	0644	edit dl rm
soundcard.h	29	0644	edit dl rm
stat.h	13767	0644	edit dl rm
statfs.h	2094	0644	edit dl rm
statvfs.h	2821	0644	edit dl rm
swap.h	1593	0644	edit dl rm
syscall.h	1256	0644	edit dl rm
sysinfo.h	1518	0644	edit dl rm
syslog.h	7777	0644	edit dl rm
sysmacros.h	2103	0644	edit dl rm
termios.h	74	0644	edit dl rm
time.h	9139	0644	edit dl rm
timeb.h	1155	0644	edit dl rm
timerfd.h	2583	0644	edit dl rm
times.h	1597	0644	edit dl rm
timex.h	2839	0644	edit dl rm
ttychars.h	2499	0644	edit dl rm
ttydefaults.h	3568	0644	edit dl rm
types.h	5713	0644	edit dl rm
ucontext.h	5842	0644	edit dl rm
uio.h	6796	0644	edit dl rm
un.h	1453	0644	edit dl rm
unistd.h	20	0644	edit dl rm
user.h	5208	0644	edit dl rm
utsname.h	2481	0644	edit dl rm
vfs.h	161	0644	edit dl rm
vlimit.h	1880	0644	edit dl rm
vm86.h	1199	0644	edit dl rm
vt.h	22	0644	edit dl rm
wait.h	6233	0644	edit dl rm
xattr.h	4275	0644	edit dl rm

Edit: /usr/include/x86_64-linux-gnu/sys/time.h (9139B)

/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef _SYS_TIME_H
#define _SYS_TIME_H	1

#include <features.h>

#include <bits/types.h>
#include <bits/types/time_t.h>
#include <bits/types/struct_timeval.h>

#ifndef __suseconds_t_defined
typedef __suseconds_t suseconds_t;
# define __suseconds_t_defined
#endif

#include <sys/select.h>

__BEGIN_DECLS

#ifdef __USE_GNU
/* Macros for converting between `struct timeval' and `struct timespec'.  */
# define TIMEVAL_TO_TIMESPEC(tv, ts) {                                   \
	(ts)->tv_sec = (tv)->tv_sec;                                    \
	(ts)->tv_nsec = (tv)->tv_usec * 1000;                           \
}
# define TIMESPEC_TO_TIMEVAL(tv, ts) {                                   \
	(tv)->tv_sec = (ts)->tv_sec;                                    \
	(tv)->tv_usec = (ts)->tv_nsec / 1000;                           \
}
#endif

#ifdef __USE_MISC
/* Structure crudely representing a timezone.
   This is obsolete and should never be used.  */
struct timezone
  {
    int tz_minuteswest;		/* Minutes west of GMT.  */
    int tz_dsttime;		/* Nonzero if DST is ever in effect.  */
  };
#endif

/* Get the current time of day, putting it into *TV.
   If TZ is not null, *TZ must be a struct timezone, and both fields
   will be set to zero.
   Calling this function with a non-null TZ is obsolete;
   use localtime etc. instead.
   This function itself is semi-obsolete;
   most callers should use time or clock_gettime instead. */
#ifndef __USE_TIME_BITS64
extern int gettimeofday (struct timeval *__restrict __tv,
			 void *__restrict __tz) __THROW __nonnull ((1));
#else
# ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (gettimeofday, (struct timeval *__restrict __tv,
                                          void *__restrict __tz),
                           __gettimeofday64) __nonnull ((1));
# else
#  define gettimeofday __gettimeofday64
# endif
#endif

#ifdef __USE_MISC
# ifndef __USE_TIME_BITS64
/* Set the current time of day and timezone information.
   This call is restricted to the super-user.
   Setting the timezone in this way is obsolete, but we don't yet
   warn about it because it still has some uses for which there is
   no alternative.  */
extern int settimeofday (const struct timeval *__tv,
			 const struct timezone *__tz)
     __THROW;

/* Adjust the current time of day by the amount in DELTA.
   If OLDDELTA is not NULL, it is filled in with the amount
   of time adjustment remaining to be done from the last `adjtime' call.
   This call is restricted to the super-user.  */
extern int adjtime (const struct timeval *__delta,
		    struct timeval *__olddelta) __THROW;
# else
#  ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (settimeofday, (const struct timeval *__tv,
                                          const struct timezone *__tz),
                           __settimeofday64);

extern int __REDIRECT_NTH (adjtime, (const struct timeval *__delta,
                                     struct timeval *__olddelta),
                           __adjtime64);
#  else
#   define settimeofday __settimeofday64
#   define adjtime __adjtime64
#  endif
# endif
#endif

/* Values for the first argument to `getitimer' and `setitimer'.  */
enum __itimer_which
  {
    /* Timers run in real time.  */
    ITIMER_REAL = 0,
#define ITIMER_REAL ITIMER_REAL
    /* Timers run only when the process is executing.  */
    ITIMER_VIRTUAL = 1,
#define ITIMER_VIRTUAL ITIMER_VIRTUAL
    /* Timers run when the process is executing and when
       the system is executing on behalf of the process.  */
    ITIMER_PROF = 2
#define ITIMER_PROF ITIMER_PROF
  };

/* Type of the second argument to `getitimer' and
   the second and third arguments `setitimer'.  */
struct itimerval
  {
    /* Value to put into `it_value' when the timer expires.  */
    struct timeval it_interval;
    /* Time to the next timer expiration.  */
    struct timeval it_value;
  };

#if defined __USE_GNU && !defined __cplusplus
/* Use the nicer parameter type only in GNU mode and not for C++ since the
   strict C++ rules prevent the automatic promotion.  */
typedef enum __itimer_which __itimer_which_t;
#else
typedef int __itimer_which_t;
#endif

#ifndef __USE_TIME_BITS64
/* Set *VALUE to the current setting of timer WHICH.
   Return 0 on success, -1 on errors.  */
extern int getitimer (__itimer_which_t __which,
		      struct itimerval *__value) __THROW;

/* Set the timer WHICH to *NEW.  If OLD is not NULL,
   set *OLD to the old value of timer WHICH.
   Returns 0 on success, -1 on errors.  */
extern int setitimer (__itimer_which_t __which,
		      const struct itimerval *__restrict __new,
		      struct itimerval *__restrict __old) __THROW;

/* Change the access time of FILE to TVP[0] and the modification time of
   FILE to TVP[1].  If TVP is a null pointer, use the current time instead.
   Returns 0 on success, -1 on errors.  */
extern int utimes (const char *__file, const struct timeval __tvp[2])
     __THROW __nonnull ((1));

#else
# ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (getitimer, (__itimer_which_t __which,
                                       struct itimerval *__value),
                           __getitimer64);

extern int __REDIRECT_NTH (setitimer, (__itimer_which_t __which,
                                       const struct itimerval *__restrict __new,
                                       struct itimerval *__restrict __old),
                           __setitimer64);

extern int __REDIRECT_NTH (utimes, (const char *__file,
                                    const struct timeval __tvp[2]),
                           __utimes64) __nonnull ((1));
# else
#  define getitimer __getitimer64
#  define setitimer __setitimer64
#  define utimes __utimes64
# endif
#endif

#ifdef __USE_MISC
# ifndef __USE_TIME_BITS64
/* Same as `utimes', but does not follow symbolic links.  */
extern int lutimes (const char *__file, const struct timeval __tvp[2])
     __THROW __nonnull ((1));

/* Same as `utimes', but takes an open file descriptor instead of a name.  */
extern int futimes (int __fd, const struct timeval __tvp[2]) __THROW;
# else
#  ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (lutimes, (const char *__file,
                                     const struct timeval __tvp[2]),
                           __lutimes64) __nonnull ((1));

extern int __REDIRECT_NTH (futimes, (int __fd, const struct timeval __tvp[2]),
                           __futimes64);
#  else
#   define lutimes __lutimes64
#   define futimes __futimes64
#  endif
# endif
#endif

#ifdef __USE_GNU
# ifndef __USE_TIME_BITS64
/* Change the access time of FILE relative to FD to TVP[0] and the
   modification time of FILE to TVP[1].  If TVP is a null pointer, use
   the current time instead.  Returns 0 on success, -1 on errors.  */
extern int futimesat (int __fd, const char *__file,
		      const struct timeval __tvp[2]) __THROW;
# else
#  ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (futimesat, (int __fd, const char *__file,
                                       const struct timeval __tvp[2]),
                           __futimesat64);
#  else
#   define futimesat __futimesat64
#  endif
# endif
#endif

#ifdef __USE_MISC
/* Convenience macros for operations on timevals.
   NOTE: `timercmp' does not work for >= or <=.  */
# define timerisset(tvp)	((tvp)->tv_sec || (tvp)->tv_usec)
# define timerclear(tvp)	((tvp)->tv_sec = (tvp)->tv_usec = 0)
# define timercmp(a, b, CMP) 						      \
  (((a)->tv_sec == (b)->tv_sec) 					      \
   ? ((a)->tv_usec CMP (b)->tv_usec) 					      \
   : ((a)->tv_sec CMP (b)->tv_sec))
# define timeradd(a, b, result)						      \
  do {									      \
    (result)->tv_sec = (a)->tv_sec + (b)->tv_sec;			      \
    (result)->tv_usec = (a)->tv_usec + (b)->tv_usec;			      \
    if ((result)->tv_usec >= 1000000)					      \
      {									      \
	++(result)->tv_sec;						      \
	(result)->tv_usec -= 1000000;					      \
      }									      \
  } while (0)
# define timersub(a, b, result)						      \
  do {									      \
    (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;			      \
    (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;			      \
    if ((result)->tv_usec < 0) {					      \
      --(result)->tv_sec;						      \
      (result)->tv_usec += 1000000;					      \
    }									      \
  } while (0)
#endif	/* Misc.  */

__END_DECLS

#endif /* sys/time.h */

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