1b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV/* 2b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * Copyright (C) 2017 The Android Open Source Project 3b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * All rights reserved. 4b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * 5b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * Redistribution and use in source and binary forms, with or without 6b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * modification, are permitted provided that the following conditions 7b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * are met: 8b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * * Redistributions of source code must retain the above copyright 9b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * notice, this list of conditions and the following disclaimer. 10b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * * Redistributions in binary form must reproduce the above copyright 11b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * notice, this list of conditions and the following disclaimer in 12b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * the documentation and/or other materials provided with the 13b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * distribution. 14b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * 15b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV * SUCH DAMAGE. 27b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV */ 28b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 29b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#ifndef _POLL_H_ 30b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#error "Never include this file directly; instead, include <poll.h>" 31b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#endif 32b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 33b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IVint __poll_chk(struct pollfd*, nfds_t, int, size_t) __INTRODUCED_IN(23); 34b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IVint __ppoll_chk(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*, size_t) 35b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV __INTRODUCED_IN(23); 36b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 37b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#if defined(__BIONIC_FORTIFY) 38b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#if __ANDROID_API__ >= __ANDROID_API_M__ 39b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#if defined(__clang__) 40b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV__BIONIC_FORTIFY_INLINE 4152dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IVint poll(struct pollfd* const fds __pass_object_size, nfds_t fd_count, int timeout) 4252dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV __overloadable 4352dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV __clang_error_if(__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE && 4452dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV __bos(fds) < sizeof(*fds) * fd_count, 4552dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV "in call to 'poll', fd_count is larger than the given buffer") { 46b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV size_t bos_fds = __bos(fds); 47b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 48b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV if (bos_fds == __BIONIC_FORTIFY_UNKNOWN_SIZE) { 4952dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV return __call_bypassing_fortify(poll)(fds, fd_count, timeout); 50b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV } 51b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV return __poll_chk(fds, fd_count, timeout, bos_fds); 52b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV} 53b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 54b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV__BIONIC_FORTIFY_INLINE 5552dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IVint ppoll(struct pollfd* const fds __pass_object_size, nfds_t fd_count, const struct timespec* timeout, const sigset_t* mask) 5652dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV __overloadable 5752dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV __clang_error_if(__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE && 5852dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV __bos(fds) < sizeof(*fds) * fd_count, 5952dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV "in call to 'ppoll', fd_count is larger than the given buffer") { 60b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV size_t bos_fds = __bos(fds); 61b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 62b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV if (bos_fds == __BIONIC_FORTIFY_UNKNOWN_SIZE) { 6352dde5fb1c0a73cdeacc4fa98825b2a14853b5c8George Burgess IV return __call_bypassing_fortify(ppoll)(fds, fd_count, timeout, mask); 64b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV } 65b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV return __ppoll_chk(fds, fd_count, timeout, mask, bos_fds); 66b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV} 67b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#else /* defined(__clang__) */ 68b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IVint __poll_real(struct pollfd*, nfds_t, int) __RENAME(poll); 69b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV__errordecl(__poll_too_small_error, "poll: pollfd array smaller than fd count"); 70b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 71b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IVint __ppoll_real(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*) __RENAME(ppoll) 72b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV __INTRODUCED_IN(21); 73b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV__errordecl(__ppoll_too_small_error, "ppoll: pollfd array smaller than fd count"); 74b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 75b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV__BIONIC_FORTIFY_INLINE 76b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IVint poll(struct pollfd* fds, nfds_t fd_count, int timeout) { 77b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV if (__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE) { 78b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV if (!__builtin_constant_p(fd_count)) { 79b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV return __poll_chk(fds, fd_count, timeout, __bos(fds)); 80b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV } else if (__bos(fds) / sizeof(*fds) < fd_count) { 81b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV __poll_too_small_error(); 82b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV } 83b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV } 84b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV return __poll_real(fds, fd_count, timeout); 85b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV} 86b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 87b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV__BIONIC_FORTIFY_INLINE 88b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IVint ppoll(struct pollfd* fds, nfds_t fd_count, const struct timespec* timeout, 89b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV const sigset_t* mask) { 90b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV if (__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE) { 91b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV if (!__builtin_constant_p(fd_count)) { 92b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV return __ppoll_chk(fds, fd_count, timeout, mask, __bos(fds)); 93b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV } else if (__bos(fds) / sizeof(*fds) < fd_count) { 94b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV __ppoll_too_small_error(); 95b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV } 96b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV } 97b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV return __ppoll_real(fds, fd_count, timeout, mask); 98b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV} 99b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV 100b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#endif /* defined(__clang__) */ 101b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#endif /* __ANDROID_API__ >= __ANDROID_API_M__ */ 102b97049c0390cb1a11b9cb0b14391972e69398ce5George Burgess IV#endif /* defined(__BIONIC_FORTIFY) */ 103