io/bits/poll2.h

   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