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The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/poll2.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/poll2.h

     1	/* Checking macros for poll functions.
     2	   Copyright (C) 2012-2024 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	#ifndef _SYS_POLL_H
    20	# error "Never include <bits/poll2.h> directly; use <sys/poll.h> instead."
    21	#endif
    22	
    23	
    24	__BEGIN_DECLS
    25	
    26	extern int __REDIRECT (__poll_alias, (struct pollfd *__fds, nfds_t __nfds,
    27					      int __timeout), poll);
    28	extern int __poll_chk (struct pollfd *__fds, nfds_t __nfds, int __timeout,
    29			       __SIZE_TYPE__ __fdslen)
    30	    __attr_access ((__write_only__, 1, 2));
    31	extern int __REDIRECT (__poll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
    32						 int __timeout, __SIZE_TYPE__ __fdslen),
    33			       __poll_chk)
    34	  __warnattr ("poll called with fds buffer too small file nfds entries");
    35	
    36	__fortify_function __fortified_attr_access (__write_only__, 1, 2) int
    37	poll (struct pollfd *__fds, nfds_t __nfds, int __timeout)
    38	{
    39	  return __glibc_fortify (poll, __nfds, sizeof (*__fds),
    40				  __glibc_objsize (__fds),
    41				  __fds, __nfds, __timeout);
    42	}
    43	
    44	
    45	#ifdef __USE_GNU
    46	# ifdef __USE_TIME_BITS64
    47	extern int __REDIRECT (__ppoll64_alias, (struct pollfd *__fds, nfds_t __nfds,
    48					       const struct timespec *__timeout,
    49					       const __sigset_t *__ss), __ppoll64);
    50	extern int __ppoll64_chk (struct pollfd *__fds, nfds_t __nfds,
    51				  const struct timespec *__timeout,
    52				  const __sigset_t *__ss, __SIZE_TYPE__ __fdslen)
    53	    __attr_access ((__write_only__, 1, 2));
    54	extern int __REDIRECT (__ppoll64_chk_warn, (struct pollfd *__fds, nfds_t __n,
    55						    const struct timespec *__timeout,
    56						    const __sigset_t *__ss,
    57						    __SIZE_TYPE__ __fdslen),
    58			       __ppoll64_chk)
    59	  __warnattr ("ppoll called with fds buffer too small file nfds entries");
    60	
    61	__fortify_function __fortified_attr_access (__write_only__, 1, 2) int
    62	ppoll (struct pollfd *__fds, nfds_t __nfds, const struct timespec *__timeout,
    63	       const __sigset_t *__ss)
    64	{
    65	  return __glibc_fortify (ppoll64, __nfds, sizeof (*__fds),
    66				  __glibc_objsize (__fds),
    67				  __fds, __nfds, __timeout, __ss);
    68	}
    69	# else
    70	extern int __REDIRECT (__ppoll_alias, (struct pollfd *__fds, nfds_t __nfds,
    71					       const struct timespec *__timeout,
    72					       const __sigset_t *__ss), ppoll);
    73	extern int __ppoll_chk (struct pollfd *__fds, nfds_t __nfds,
    74				const struct timespec *__timeout,
    75				const __sigset_t *__ss, __SIZE_TYPE__ __fdslen)
    76	    __attr_access ((__write_only__, 1, 2));
    77	extern int __REDIRECT (__ppoll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
    78						  const struct timespec *__timeout,
    79						  const __sigset_t *__ss,
    80						  __SIZE_TYPE__ __fdslen),
    81			       __ppoll_chk)
    82	  __warnattr ("ppoll called with fds buffer too small file nfds entries");
    83	
    84	__fortify_function __fortified_attr_access (__write_only__, 1, 2) int
    85	ppoll (struct pollfd *__fds, nfds_t __nfds, const struct timespec *__timeout,
    86	       const __sigset_t *__ss)
    87	{
    88	  return __glibc_fortify (ppoll, __nfds, sizeof (*__fds),
    89				  __glibc_objsize (__fds),
    90				  __fds, __nfds, __timeout, __ss);
    91	}
    92	# endif
    93	#endif
    94	
    95	__END_DECLS