1  /* Checking macros for poll functions.
       2     Copyright (C) 2012-2023 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