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The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/dirent.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/dirent.h

     1	/* Copyright (C) 1996-2024 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	#ifndef _DIRENT_H
    19	# error "Never use <bits/dirent.h> directly; include <dirent.h> instead."
    20	#endif
    21	
    22	struct dirent
    23	  {
    24	#ifndef __USE_FILE_OFFSET64
    25	    __ino_t d_ino;
    26	    __off_t d_off;
    27	#else
    28	    __ino64_t d_ino;
    29	    __off64_t d_off;
    30	#endif
    31	    unsigned short int d_reclen;
    32	    unsigned char d_type;
    33	    char d_name[256];		/* We must not include limits.h! */
    34	  };
    35	
    36	#ifdef __USE_LARGEFILE64
    37	struct dirent64
    38	  {
    39	    __ino64_t d_ino;
    40	    __off64_t d_off;
    41	    unsigned short int d_reclen;
    42	    unsigned char d_type;
    43	    char d_name[256];		/* We must not include limits.h! */
    44	  };
    45	#endif
    46	
    47	#define d_fileno	d_ino	/* Backwards compatibility.  */
    48	
    49	#undef  _DIRENT_HAVE_D_NAMLEN
    50	#define _DIRENT_HAVE_D_RECLEN
    51	#define _DIRENT_HAVE_D_OFF
    52	#define _DIRENT_HAVE_D_TYPE
    53	
    54	#if defined __OFF_T_MATCHES_OFF64_T && defined __INO_T_MATCHES_INO64_T
    55	/* Inform libc code that these two types are effectively identical.  */
    56	# define _DIRENT_MATCHES_DIRENT64	1
    57	#else
    58	# define _DIRENT_MATCHES_DIRENT64	0
    59	#endif