include/boost/corosio/native/detail/posix/large_file.hpp
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boost::corosio::detail::file_preadv(int, iovec const*, int, long)
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boost::corosio::detail::file_pwritev(int, iovec const*, int, long)
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boost::corosio::detail::file_fstat(int, stat*)
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boost::corosio::detail::file_ftruncate(int, long)
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| Line | TLA | Hits | Source Code |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2026 Michael Vandeberg | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/cppalliance/corosio | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_COROSIO_NATIVE_DETAIL_POSIX_LARGE_FILE_HPP | ||
| 11 | #define BOOST_COROSIO_NATIVE_DETAIL_POSIX_LARGE_FILE_HPP | ||
| 12 | |||
| 13 | #include <boost/corosio/detail/platform.hpp> | ||
| 14 | |||
| 15 | #if BOOST_COROSIO_POSIX | ||
| 16 | |||
| 17 | #include <fcntl.h> | ||
| 18 | #include <sys/stat.h> | ||
| 19 | #include <sys/types.h> | ||
| 20 | #include <sys/uio.h> | ||
| 21 | #include <unistd.h> | ||
| 22 | |||
| 23 | /* 64-bit file offsets in every build. | ||
| 24 | |||
| 25 | 32-bit glibc has a 32-bit off_t unless the including translation | ||
| 26 | unit defines _FILE_OFFSET_BITS=64, which the library cannot require | ||
| 27 | of its users. The plain calls then fail past 2 GiB: EOVERFLOW for an | ||
| 28 | offset that does not fit, and EFBIG for a file opened without | ||
| 29 | O_LARGEFILE. There the explicit *64 calls and O_LARGEFILE are used. | ||
| 30 | Everywhere else off_t is already 64-bit, and the plain calls are | ||
| 31 | kept, so the fault harness's shadows of them still apply. | ||
| 32 | */ | ||
| 33 | |||
| 34 | namespace boost::corosio::detail { | ||
| 35 | |||
| 36 | #if defined(__GLIBC__) && !defined(__OFF_T_MATCHES_OFF64_T) | ||
| 37 | |||
| 38 | using file_off_t = off64_t; | ||
| 39 | using file_stat_t = struct stat64; | ||
| 40 | |||
| 41 | /// Add to the flags of every open() of a file the library owns. | ||
| 42 | inline constexpr int large_file_open_flag = O_LARGEFILE; | ||
| 43 | |||
| 44 | inline ssize_t | ||
| 45 | file_preadv(int fd, iovec const* iov, int n, file_off_t off) noexcept | ||
| 46 | { | ||
| 47 | return ::preadv64(fd, iov, n, off); | ||
| 48 | } | ||
| 49 | |||
| 50 | inline ssize_t | ||
| 51 | file_pwritev(int fd, iovec const* iov, int n, file_off_t off) noexcept | ||
| 52 | { | ||
| 53 | return ::pwritev64(fd, iov, n, off); | ||
| 54 | } | ||
| 55 | |||
| 56 | inline int | ||
| 57 | file_fstat(int fd, file_stat_t* st) noexcept | ||
| 58 | { | ||
| 59 | return ::fstat64(fd, st); | ||
| 60 | } | ||
| 61 | |||
| 62 | inline int | ||
| 63 | file_ftruncate(int fd, file_off_t len) noexcept | ||
| 64 | { | ||
| 65 | return ::ftruncate64(fd, len); | ||
| 66 | } | ||
| 67 | |||
| 68 | inline file_off_t | ||
| 69 | file_lseek(int fd, file_off_t off, int whence) noexcept | ||
| 70 | { | ||
| 71 | return ::lseek64(fd, off, whence); | ||
| 72 | } | ||
| 73 | |||
| 74 | #else | ||
| 75 | |||
| 76 | using file_off_t = off_t; | ||
| 77 | using file_stat_t = struct stat; | ||
| 78 | |||
| 79 | /// Add to the flags of every open() of a file the library owns. | ||
| 80 | inline constexpr int large_file_open_flag = 0; | ||
| 81 | |||
| 82 | inline ssize_t | ||
| 83 | 414x | file_preadv(int fd, iovec const* iov, int n, file_off_t off) noexcept | |
| 84 | { | ||
| 85 | 414x | return ::preadv(fd, iov, n, off); | |
| 86 | } | ||
| 87 | |||
| 88 | inline ssize_t | ||
| 89 | 70x | file_pwritev(int fd, iovec const* iov, int n, file_off_t off) noexcept | |
| 90 | { | ||
| 91 | 70x | return ::pwritev(fd, iov, n, off); | |
| 92 | } | ||
| 93 | |||
| 94 | inline int | ||
| 95 | 578x | file_fstat(int fd, file_stat_t* st) noexcept | |
| 96 | { | ||
| 97 | 578x | return ::fstat(fd, st); | |
| 98 | } | ||
| 99 | |||
| 100 | inline int | ||
| 101 | 21x | file_ftruncate(int fd, file_off_t len) noexcept | |
| 102 | { | ||
| 103 | 21x | return ::ftruncate(fd, len); | |
| 104 | } | ||
| 105 | |||
| 106 | inline file_off_t | ||
| 107 | file_lseek(int fd, file_off_t off, int whence) noexcept | ||
| 108 | { | ||
| 109 | return ::lseek(fd, off, whence); | ||
| 110 | } | ||
| 111 | |||
| 112 | #endif | ||
| 113 | |||
| 114 | } // namespace boost::corosio::detail | ||
| 115 | |||
| 116 | #endif // BOOST_COROSIO_POSIX | ||
| 117 | |||
| 118 | #endif // BOOST_COROSIO_NATIVE_DETAIL_POSIX_LARGE_FILE_HPP | ||
| 119 |