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The C and C++ Include Header Files

/usr/include/utime.h


$ cat -n /usr/include/utime.h

     1	/* Copyright (C) 1991-2024 Free Software Foundation, Inc.
     2	   This file is part of the GNU C Library.
     3	
     4	   The GNU C Library is free software; you can redistribute it and/or
     5	   modify it under the terms of the GNU Lesser General Public
     6	   License as published by the Free Software Foundation; either
     7	   version 2.1 of the License, or (at your option) any later version.
     8	
     9	   The GNU C Library is distributed in the hope that it will be useful,
    10	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    11	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12	   Lesser General Public License for more details.
    13	
    14	   You should have received a copy of the GNU Lesser General Public
    15	   License along with the GNU C Library; if not, see
    16	   <https://www.gnu.org/licenses/>.  */
    17	
    18	/*
    19	 *	POSIX Standard: 5.6.6 Set File Access and Modification Times  <utime.h>
    20	 */
    21	
    22	#ifndef	_UTIME_H
    23	#define	_UTIME_H	1
    24	
    25	#include <features.h>
    26	
    27	__BEGIN_DECLS
    28	
    29	#include <bits/types.h>
    30	
    31	#if defined __USE_XOPEN || defined __USE_XOPEN2K
    32	# include <bits/types/time_t.h>
    33	#endif
    34	
    35	/* Structure describing file times.  */
    36	struct utimbuf
    37	  {
    38	#ifdef __USE_TIME_BITS64
    39	    __time64_t actime;		/* Access time.  */
    40	    __time64_t modtime;		/* Modification time.  */
    41	#else
    42	    __time_t actime;		/* Access time.  */
    43	    __time_t modtime;		/* Modification time.  */
    44	#endif
    45	  };
    46	
    47	/* Set the access and modification times of FILE to those given in
    48	   *FILE_TIMES.  If FILE_TIMES is NULL, set them to the current time.  */
    49	#ifndef __USE_TIME_BITS64
    50	extern int utime (const char *__file,
    51			  const struct utimbuf *__file_times)
    52	     __THROW __nonnull ((1));
    53	
    54	#else
    55	# ifdef __REDIRECT_NTH
    56	extern int __REDIRECT_NTH (utime, (const char *__file,
    57	                                   const struct utimbuf *__file_times),
    58	                           __utime64);
    59	# else
    60	#  define utime __utime64
    61	# endif
    62	#endif
    63	
    64	__END_DECLS
    65	
    66	#endif /* utime.h */