--- /dev/null
+/* Copyright (C) 1991-2018 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
+ <http://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+ This is obsolete and should never be used.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. */
+ };
+
+typedef struct timezone *__restrict __timezone_ptr_t;
+#else
+typedef void *__restrict __timezone_ptr_t;
+#endif
+
+/* Get the current time of day and timezone information,
+ putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled.
+ Returns 0 on success, -1 on errors.
+ NOTE: This form of timezone information is obsolete.
+ Use the functions and variables declared in <time.h> instead. */
+extern int gettimeofday (struct timeval *__restrict __tv,
+ __timezone_ptr_t __tz) __THROW __nonnull ((1));
+
+#ifdef __USE_MISC
+/* Set the current time of day and timezone information.
+ This call is restricted to the super-user. */
+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;
+#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
+
+/* 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));
+
+#ifdef __USE_MISC
+/* 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;
+#endif
+
+#ifdef __USE_GNU
+/* 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;
+#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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