92 lines
4.0 KiB
C
92 lines
4.0 KiB
C
/*
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* Copyright (C) 2017 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _POLL_H_
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#error "Never include this file directly; instead, include <poll.h>"
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#endif
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int __poll_chk(struct pollfd*, nfds_t, int, size_t) __INTRODUCED_IN(23);
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int __ppoll_chk(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*, size_t) __INTRODUCED_IN(23);
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int __ppoll64_chk(struct pollfd*, nfds_t, const struct timespec*, const sigset64_t*, size_t) __INTRODUCED_IN(28);
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#if defined(__BIONIC_FORTIFY)
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#define __bos_fd_count_trivially_safe(bos_val, fds, fd_count) \
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__bos_dynamic_check_impl_and((bos_val), >=, (sizeof(*fds) * (fd_count)), \
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(fd_count) <= __BIONIC_CAST(static_cast, nfds_t, -1) / sizeof(*fds))
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__BIONIC_FORTIFY_INLINE
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int poll(struct pollfd* const fds __pass_object_size, nfds_t fd_count, int timeout)
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__overloadable
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__clang_error_if(__bos_unevaluated_lt(__bos(fds), sizeof(*fds) * fd_count),
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"in call to 'poll', fd_count is larger than the given buffer") {
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#if __ANDROID_API__ >= 23 && __BIONIC_FORTIFY_RUNTIME_CHECKS_ENABLED
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size_t bos_fds = __bos(fds);
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if (!__bos_fd_count_trivially_safe(bos_fds, fds, fd_count)) {
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return __poll_chk(fds, fd_count, timeout, bos_fds);
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}
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#endif
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return __call_bypassing_fortify(poll)(fds, fd_count, timeout);
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}
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__BIONIC_FORTIFY_INLINE
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int ppoll(struct pollfd* const fds __pass_object_size, nfds_t fd_count, const struct timespec* timeout, const sigset_t* mask)
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__overloadable
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__clang_error_if(__bos_unevaluated_lt(__bos(fds), sizeof(*fds) * fd_count),
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"in call to 'ppoll', fd_count is larger than the given buffer") {
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#if __ANDROID_API__ >= 23 && __BIONIC_FORTIFY_RUNTIME_CHECKS_ENABLED
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size_t bos_fds = __bos(fds);
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if (!__bos_fd_count_trivially_safe(bos_fds, fds, fd_count)) {
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return __ppoll_chk(fds, fd_count, timeout, mask, bos_fds);
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}
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#endif
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return __call_bypassing_fortify(ppoll)(fds, fd_count, timeout, mask);
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}
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#if __ANDROID_API__ >= 28
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__BIONIC_FORTIFY_INLINE
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int ppoll64(struct pollfd* const fds __pass_object_size, nfds_t fd_count, const struct timespec* timeout, const sigset64_t* mask)
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__overloadable
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__clang_error_if(__bos_unevaluated_lt(__bos(fds), sizeof(*fds) * fd_count),
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"in call to 'ppoll64', fd_count is larger than the given buffer") {
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#if __BIONIC_FORTIFY_RUNTIME_CHECKS_ENABLED
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size_t bos_fds = __bos(fds);
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if (!__bos_fd_count_trivially_safe(bos_fds, fds, fd_count)) {
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return __ppoll64_chk(fds, fd_count, timeout, mask, bos_fds);
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}
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#endif
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return __call_bypassing_fortify(ppoll64)(fds, fd_count, timeout, mask);
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}
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#endif /* __ANDROID_API__ >= 28 */
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#undef __bos_fd_count_trivially_safe
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#endif /* defined(__BIONIC_FORTIFY) */
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