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The C and C++ Include Header Files

cat -n /usr/include/x86_64-linux-gnu/sys/signalfd.h

     1	/* Copyright (C) 2007-2026 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_SIGNALFD_H
    19	#define	_SYS_SIGNALFD_H	1
    20	
    21	#include <stdint.h>
    22	#include <bits/types/sigset_t.h>
    23	
    24	/* Get the platform-dependent flags.  */
    25	#include <bits/signalfd.h>
    26	
    27	struct signalfd_siginfo
    28	{
    29	  uint32_t ssi_signo;
    30	  int32_t ssi_errno;
    31	  int32_t ssi_code;
    32	  uint32_t ssi_pid;
    33	  uint32_t ssi_uid;
    34	  int32_t ssi_fd;
    35	  uint32_t ssi_tid;
    36	  uint32_t ssi_band;
    37	  uint32_t ssi_overrun;
    38	  uint32_t ssi_trapno;
    39	  int32_t ssi_status;
    40	  int32_t ssi_int;
    41	  uint64_t ssi_ptr;
    42	  uint64_t ssi_utime;
    43	  uint64_t ssi_stime;
    44	  uint64_t ssi_addr;
    45	  uint16_t ssi_addr_lsb;
    46	  uint16_t __pad2;
    47	  int32_t ssi_syscall;
    48	  uint64_t ssi_call_addr;
    49	  uint32_t ssi_arch;
    50	  uint8_t __pad[28];
    51	};
    52	
    53	__BEGIN_DECLS
    54	
    55	/* Request notification for delivery of signals in MASK to be
    56	   performed using descriptor FD.*/
    57	extern int signalfd (int __fd, const sigset_t *__mask, int __flags)
    58	  __THROW __nonnull ((2));
    59	
    60	__END_DECLS
    61	
    62	#endif /* sys/signalfd.h */