diff options
Diffstat (limited to 'llvm/lib')
-rw-r--r-- | llvm/lib/Support/Unix/Path.inc | 47 | ||||
-rw-r--r-- | llvm/lib/Support/Windows/Path.inc | 36 |
2 files changed, 0 insertions, 83 deletions
diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc index 250a15d..3099c27 100644 --- a/llvm/lib/Support/Unix/Path.inc +++ b/llvm/lib/Support/Unix/Path.inc @@ -807,53 +807,6 @@ std::error_code openFileForWrite(const Twine &Name, int &ResultFD, return std::error_code(); } -std::error_code getPathFromOpenFD(int FD, SmallVectorImpl<char> &ResultPath) { - if (FD < 0) - return make_error_code(errc::bad_file_descriptor); - -#if defined(F_GETPATH) - // When F_GETPATH is availble, it is the quickest way to get - // the path from a file descriptor. - ResultPath.reserve(MAXPATHLEN); - if (::fcntl(FD, F_GETPATH, ResultPath.begin()) == -1) - return std::error_code(errno, std::generic_category()); - - ResultPath.set_size(strlen(ResultPath.begin())); -#else - // If we have a /proc filesystem mounted, we can quickly establish the - // real name of the file with readlink. Otherwise, we don't know how to - // get the filename from a file descriptor. Give up. - if (!fs::hasProcSelfFD()) - return make_error_code(errc::function_not_supported); - - ResultPath.reserve(PATH_MAX); - char ProcPath[64]; - snprintf(ProcPath, sizeof(ProcPath), "/proc/self/fd/%d", FD); - ssize_t CharCount = ::readlink(ProcPath, ResultPath.begin(), ResultPath.capacity()); - if (CharCount < 0) - return std::error_code(errno, std::generic_category()); - - // Was the filename truncated? - if (static_cast<size_t>(CharCount) == ResultPath.capacity()) { - // Use lstat to get the size of the filename - struct stat sb; - if (::lstat(ProcPath, &sb) < 0) - return std::error_code(errno, std::generic_category()); - - ResultPath.reserve(sb.st_size + 1); - CharCount = ::readlink(ProcPath, ResultPath.begin(), ResultPath.capacity()); - if (CharCount < 0) - return std::error_code(errno, std::generic_category()); - - // Test for race condition: did the link size change? - if (CharCount > sb.st_size) - return std::error_code(ENAMETOOLONG, std::generic_category()); - } - ResultPath.set_size(static_cast<size_t>(CharCount)); -#endif - return std::error_code(); -} - template <typename T> static std::error_code remove_directories_impl(const T &Entry, bool IgnoreErrors) { diff --git a/llvm/lib/Support/Windows/Path.inc b/llvm/lib/Support/Windows/Path.inc index b00d390..60c0364 100644 --- a/llvm/lib/Support/Windows/Path.inc +++ b/llvm/lib/Support/Windows/Path.inc @@ -959,42 +959,6 @@ std::error_code openFileForWrite(const Twine &Name, int &ResultFD, return std::error_code(); } -std::error_code getPathFromOpenFD(int FD, SmallVectorImpl<char> &ResultPath) { - HANDLE FileHandle = reinterpret_cast<HANDLE>(::_get_osfhandle(FD)); - if (FileHandle == INVALID_HANDLE_VALUE) - return make_error_code(errc::bad_file_descriptor); - - DWORD CharCount; - SmallVector<wchar_t, 1024> TempPath; - do { - CharCount = ::GetFinalPathNameByHandleW(FileHandle, TempPath.begin(), - TempPath.capacity(), - FILE_NAME_NORMALIZED); - if (CharCount < TempPath.capacity()) - break; - - // Reserve sufficient space for the path as well as the null character. Even - // though the API does not document that it is required, if we reserve just - // CharCount space, the function call will not store the resulting path and - // still report success. - TempPath.reserve(CharCount + 1); - } while (true); - - if (CharCount == 0) - return mapWindowsError(::GetLastError()); - - TempPath.set_size(CharCount); - - // On earlier Windows releases, the character count includes the terminating - // null. - if (TempPath.back() == L'\0') { - --CharCount; - TempPath.pop_back(); - } - - return windows::UTF16ToUTF8(TempPath.data(), CharCount, ResultPath); -} - std::error_code remove_directories(const Twine &path, bool IgnoreErrors) { // Convert to utf-16. SmallVector<wchar_t, 128> Path16; |