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a4ed0471d7
It was raised on libc-help [1] that some Linux kernel interfaces expect the libc to define __USE_TIME_BITS64 to indicate the time_t size for the kABI. Different than defined by the initial y2038 design document [2], the __USE_TIME_BITS64 is only defined for ABIs that support more than one time_t size (by defining the _TIME_BITS for each module). The 64 bit time_t redirects are now enabled using a different internal define (__USE_TIME64_REDIRECTS). There is no expected change in semantic or code generation. Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and arm-linux-gnueabi [1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html [2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign Reviewed-by: DJ Delorie <dj@redhat.com>
109 lines
4.3 KiB
C
109 lines
4.3 KiB
C
/* Checking macros for poll functions.
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Copyright (C) 2012-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_POLL_H
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# error "Never include <bits/poll2.h> directly; use <sys/poll.h> instead."
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#endif
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__BEGIN_DECLS
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extern int __REDIRECT (__poll_alias, (struct pollfd *__fds, nfds_t __nfds,
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int __timeout), poll);
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extern int __poll_chk (struct pollfd *__fds, nfds_t __nfds, int __timeout,
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__SIZE_TYPE__ __fdslen)
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__attr_access ((__write_only__, 1, 2));
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extern int __REDIRECT (__poll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
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int __timeout, __SIZE_TYPE__ __fdslen),
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__poll_chk)
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__warnattr ("poll called with fds buffer too small file nfds entries");
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__fortify_function __fortified_attr_access (__write_only__, 1, 2)
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__attribute_overloadable__ int
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poll (__fortify_clang_overload_arg (struct pollfd *, ,__fds), nfds_t __nfds,
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int __timeout)
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__fortify_clang_warning_only_if_bos_lt2 (__nfds, __fds, sizeof (*__fds),
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"poll called with fds buffer "
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"too small file nfds entries")
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{
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return __glibc_fortify (poll, __nfds, sizeof (*__fds),
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__glibc_objsize (__fds),
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__fds, __nfds, __timeout);
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}
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#ifdef __USE_GNU
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# ifdef __USE_TIME64_REDIRECTS
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extern int __REDIRECT (__ppoll64_alias, (struct pollfd *__fds, nfds_t __nfds,
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const struct timespec *__timeout,
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const __sigset_t *__ss), __ppoll64);
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extern int __ppoll64_chk (struct pollfd *__fds, nfds_t __nfds,
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const struct timespec *__timeout,
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const __sigset_t *__ss, __SIZE_TYPE__ __fdslen)
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__attr_access ((__write_only__, 1, 2));
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extern int __REDIRECT (__ppoll64_chk_warn, (struct pollfd *__fds, nfds_t __n,
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const struct timespec *__timeout,
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const __sigset_t *__ss,
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__SIZE_TYPE__ __fdslen),
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__ppoll64_chk)
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__warnattr ("ppoll called with fds buffer too small file nfds entries");
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__fortify_function __fortified_attr_access (__write_only__, 1, 2)
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__attribute_overloadable__ int
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ppoll (__fortify_clang_overload_arg (struct pollfd *, ,__fds), nfds_t __nfds,
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const struct timespec *__timeout, const __sigset_t *__ss)
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__fortify_clang_warning_only_if_bos_lt2 (__nfds, __fds, sizeof (*__fds),
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"ppoll called with fds buffer "
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"too small file nfds entries")
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{
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return __glibc_fortify (ppoll64, __nfds, sizeof (*__fds),
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__glibc_objsize (__fds),
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__fds, __nfds, __timeout, __ss);
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}
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# else
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extern int __REDIRECT (__ppoll_alias, (struct pollfd *__fds, nfds_t __nfds,
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const struct timespec *__timeout,
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const __sigset_t *__ss), ppoll);
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extern int __ppoll_chk (struct pollfd *__fds, nfds_t __nfds,
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const struct timespec *__timeout,
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const __sigset_t *__ss, __SIZE_TYPE__ __fdslen)
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__attr_access ((__write_only__, 1, 2));
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extern int __REDIRECT (__ppoll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
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const struct timespec *__timeout,
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const __sigset_t *__ss,
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__SIZE_TYPE__ __fdslen),
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__ppoll_chk)
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__warnattr ("ppoll called with fds buffer too small file nfds entries");
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__fortify_function __fortified_attr_access (__write_only__, 1, 2)
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__attribute_overloadable__ int
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ppoll (__fortify_clang_overload_arg (struct pollfd *, ,__fds), nfds_t __nfds,
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const struct timespec *__timeout, const __sigset_t *__ss)
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__fortify_clang_warning_only_if_bos_lt2 (__nfds, __fds, sizeof (*__fds),
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"ppoll called with fds buffer "
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"too small file nfds entries")
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{
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return __glibc_fortify (ppoll, __nfds, sizeof (*__fds),
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__glibc_objsize (__fds),
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__fds, __nfds, __timeout, __ss);
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}
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# endif
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#endif
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__END_DECLS
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