The C and C++ Include Header Files

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


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

     1	/* Copyright (C) 2008-2024 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	_SYS_TIMERFD_H
    19	# error "Never use <bits/timerfd.h> directly; include <sys/timerfd.h> instead."
    20	#endif
    21	
    22	/* Bits to be set in the FLAGS parameter of `timerfd_create'.  */
    23	enum
    24	  {
    25	    TFD_CLOEXEC = 02000000,
    26	#define TFD_CLOEXEC TFD_CLOEXEC
    27	    TFD_NONBLOCK = 00004000
    28	#define TFD_NONBLOCK TFD_NONBLOCK
    29	  };