The C and C++ Include Header Files

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


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

     1	/* Definition of struct sockaddr_* common members and sizes, generic version.
     2	   Copyright (C) 1995-2024 Free Software Foundation, Inc.
     3	   This file is part of the GNU C Library.
     4	
     5	   The GNU C Library is free software; you can redistribute it and/or
     6	   modify it under the terms of the GNU Lesser General Public
     7	   License as published by the Free Software Foundation; either
     8	   version 2.1 of the License, or (at your option) any later version.
     9	
    10	   The GNU C Library is distributed in the hope that it will be useful,
    11	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    12	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13	   Lesser General Public License for more details.
    14	
    15	   You should have received a copy of the GNU Lesser General Public
    16	   License along with the GNU C Library; if not, see
    17	   <https://www.gnu.org/licenses/>.  */
    18	
    19	/*
    20	 * Never include this file directly; use <sys/socket.h> instead.
    21	 */
    22	
    23	#ifndef _BITS_SOCKADDR_H
    24	#define _BITS_SOCKADDR_H	1
    25	
    26	
    27	/* POSIX.1g specifies this type name for the `sa_family' member.  */
    28	typedef unsigned short int sa_family_t;
    29	
    30	/* This macro is used to declare the initial common members
    31	   of the data types used for socket addresses, `struct sockaddr',
    32	   `struct sockaddr_in', `struct sockaddr_un', etc.  */
    33	
    34	#define	__SOCKADDR_COMMON(sa_prefix) \
    35	  sa_family_t sa_prefix##family
    36	
    37	#define __SOCKADDR_COMMON_SIZE	(sizeof (unsigned short int))
    38	
    39	/* Size of struct sockaddr_storage.  */
    40	#define _SS_SIZE 128
    41	
    42	#endif	/* bits/sockaddr.h */