io/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)
  37 __attribute_overloadable__ int
  38 poll (__fortify_clang_overload_arg (struct pollfd *, ,__fds), nfds_t __nfds,
  39       int __timeout)
  40      __fortify_clang_warning_only_if_bos_lt2 (__nfds, __fds, sizeof (*__fds),
  41                                               "poll called with fds buffer "
  42                                               "too small file nfds entries")
  43 {
  44   return __glibc_fortify (poll, __nfds, sizeof (*__fds),
  45                           __glibc_objsize (__fds),
  46                           __fds, __nfds, __timeout);
  47 }
  48
  49
  50 #ifdef __USE_GNU
  51 # ifdef __USE_TIME_BITS64
  52 extern int __REDIRECT (__ppoll64_alias, (struct pollfd *__fds, nfds_t __nfds,
  53                                        const struct timespec *__timeout,
  54                                        const __sigset_t *__ss), __ppoll64);
  55 extern int __ppoll64_chk (struct pollfd *__fds, nfds_t __nfds,
  56                           const struct timespec *__timeout,
  57                           const __sigset_t *__ss, __SIZE_TYPE__ __fdslen)
  58     __attr_access ((__write_only__, 1, 2));
  59 extern int __REDIRECT (__ppoll64_chk_warn, (struct pollfd *__fds, nfds_t __n,
  60                                             const struct timespec *__timeout,
  61                                             const __sigset_t *__ss,
  62                                             __SIZE_TYPE__ __fdslen),
  63                        __ppoll64_chk)
  64   __warnattr ("ppoll called with fds buffer too small file nfds entries");
  65
  66 __fortify_function __fortified_attr_access (__write_only__, 1, 2)
  67 __attribute_overloadable__ int
  68 ppoll (__fortify_clang_overload_arg (struct pollfd *, ,__fds), nfds_t __nfds,
  69        const struct timespec *__timeout, const __sigset_t *__ss)
  70      __fortify_clang_warning_only_if_bos_lt2 (__nfds, __fds, sizeof (*__fds),
  71                                               "ppoll called with fds buffer "
  72                                               "too small file nfds entries")
  73 {
  74   return __glibc_fortify (ppoll64, __nfds, sizeof (*__fds),
  75                           __glibc_objsize (__fds),
  76                           __fds, __nfds, __timeout, __ss);
  77 }
  78 # else
  79 extern int __REDIRECT (__ppoll_alias, (struct pollfd *__fds, nfds_t __nfds,
  80                                        const struct timespec *__timeout,
  81                                        const __sigset_t *__ss), ppoll);
  82 extern int __ppoll_chk (struct pollfd *__fds, nfds_t __nfds,
  83                         const struct timespec *__timeout,
  84                         const __sigset_t *__ss, __SIZE_TYPE__ __fdslen)
  85     __attr_access ((__write_only__, 1, 2));
  86 extern int __REDIRECT (__ppoll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
  87                                           const struct timespec *__timeout,
  88                                           const __sigset_t *__ss,
  89                                           __SIZE_TYPE__ __fdslen),
  90                        __ppoll_chk)
  91   __warnattr ("ppoll called with fds buffer too small file nfds entries");
  92
  93 __fortify_function __fortified_attr_access (__write_only__, 1, 2)
  94 __attribute_overloadable__ int
  95 ppoll (__fortify_clang_overload_arg (struct pollfd *, ,__fds), nfds_t __nfds,
  96        const struct timespec *__timeout, const __sigset_t *__ss)
  97      __fortify_clang_warning_only_if_bos_lt2 (__nfds, __fds, sizeof (*__fds),
  98                                               "ppoll called with fds buffer "
  99                                               "too small file nfds entries")
 100 {
 101   return __glibc_fortify (ppoll, __nfds, sizeof (*__fds),
 102                           __glibc_objsize (__fds),
 103                           __fds, __nfds, __timeout, __ss);
 104 }
 105 # endif
 106 #endif
 107
 108 __END_DECLS