-//===- llvm/Support/Win32/PathV2.cpp - Windows Path Impl --------*- C++ -*-===//
+//===- llvm/Support/Windows/PathV2.inc - Windows Path Impl ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
//===----------------------------------------------------------------------===//
#include "Windows.h"
-#include <WinCrypt.h>
+#include <wincrypt.h>
#include <fcntl.h>
#include <io.h>
#include <sys/stat.h>
::GetProcAddress(::GetModuleHandleA("kernel32.dll"),
"CreateSymbolicLinkW"));
- error_code UTF8ToUTF16(const StringRef &utf8,
- SmallVectorImpl<wchar_t> &utf16) {
+ error_code UTF8ToUTF16(StringRef utf8, SmallVectorImpl<wchar_t> &utf16) {
int len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
utf8.begin(), utf8.size(),
utf16.begin(), 0);
if (len == 0)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
utf16.reserve(len + 1);
utf16.set_size(len);
utf16.begin(), utf16.size());
if (len == 0)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
// Make utf16 null terminated.
utf16.push_back(0);
utf16.pop_back();
- return make_error_code(errc::success);
+ return success;
}
error_code UTF16ToUTF8(const wchar_t *utf16, size_t utf16_len,
NULL, NULL);
if (len == 0)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
utf8.reserve(len);
utf8.set_size(len);
NULL, NULL);
if (len == 0)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
// Make utf8 null terminated.
utf8.push_back(0);
utf8.pop_back();
- return make_error_code(errc::success);
+ return success;
}
error_code TempDir(SmallVectorImpl<wchar_t> &result) {
DWORD len = ::GetTempPathW(result.capacity(), result.begin());
if (len == 0)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
if (len > result.capacity()) {
result.reserve(len);
}
result.set_size(len);
- return make_error_code(errc::success);
+ return success;
}
- struct AutoCryptoProvider {
- HCRYPTPROV CryptoProvider;
+ // Forwarder for ScopedHandle.
+ BOOL WINAPI CryptReleaseContext(HCRYPTPROV Provider) {
+ return ::CryptReleaseContext(Provider, 0);
+ }
- ~AutoCryptoProvider() {
- ::CryptReleaseContext(CryptoProvider, 0);
+ typedef ScopedHandle<HCRYPTPROV, uintptr_t(-1),
+ BOOL (WINAPI*)(HCRYPTPROV), CryptReleaseContext>
+ ScopedCryptContext;
+ bool is_separator(const wchar_t value) {
+ switch (value) {
+ case L'\\':
+ case L'/':
+ return true;
+ default:
+ return false;
}
-
- operator HCRYPTPROV() const {return CryptoProvider;}
- };
+ }
}
namespace llvm {
namespace sys {
-namespace path {
+namespace fs {
error_code current_path(SmallVectorImpl<char> &result) {
SmallVector<wchar_t, 128> cur_path;
// A zero return value indicates a failure other than insufficient space.
if (len == 0)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
// If there's insufficient space, the len returned is larger than the len
// given.
result.data(), result.size(),
NULL, NULL);
if (len == 0)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
- return make_error_code(errc::success);
+ return success;
}
-} // end namespace path
-
-namespace fs {
-
error_code copy_file(const Twine &from, const Twine &to, copy_option copt) {
// Get arguments.
SmallString<128> from_storage;
copt != copy_option::overwrite_if_exists);
if (res == 0)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
- return make_error_code(errc::success);
+ return success;
}
error_code create_directory(const Twine &path, bool &existed) {
return ec;
if (!::CreateDirectoryW(path_utf16.begin(), NULL)) {
- error_code ec = make_error_code(windows_error(::GetLastError()));
- if (ec == make_error_code(windows_error::already_exists))
+ error_code ec = windows_error(::GetLastError());
+ if (ec == windows_error::already_exists)
existed = true;
else
return ec;
} else
existed = false;
- return make_error_code(errc::success);
+ return success;
}
error_code create_hard_link(const Twine &to, const Twine &from) {
if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
if (!::CreateHardLinkW(wide_from.begin(), wide_to.begin(), NULL))
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
- return make_error_code(errc::success);
+ return success;
}
error_code create_symlink(const Twine &to, const Twine &from) {
if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
if (!create_symbolic_link_api(wide_from.begin(), wide_to.begin(), 0))
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
- return make_error_code(errc::success);
+ return success;
}
error_code remove(const Twine &path, bool &existed) {
SmallString<128> path_storage;
SmallVector<wchar_t, 128> path_utf16;
+ file_status st;
+ if (error_code ec = status(path, st))
+ return ec;
+
if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
path_utf16))
return ec;
- if (!::DeleteFileW(path_utf16.begin())) {
- error_code ec = make_error_code(windows_error(::GetLastError()));
- if (ec != make_error_code(windows_error::file_not_found))
- return ec;
- existed = false;
- } else
- existed = true;
+ if (st.type() == file_type::directory_file) {
+ if (!::RemoveDirectoryW(c_str(path_utf16))) {
+ error_code ec = windows_error(::GetLastError());
+ if (ec != windows_error::file_not_found)
+ return ec;
+ existed = false;
+ } else
+ existed = true;
+ } else {
+ if (!::DeleteFileW(c_str(path_utf16))) {
+ error_code ec = windows_error(::GetLastError());
+ if (ec != windows_error::file_not_found)
+ return ec;
+ existed = false;
+ } else
+ existed = true;
+ }
- return make_error_code(errc::success);
+ return success;
}
error_code rename(const Twine &from, const Twine &to) {
if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
- if (!::MoveFileW(wide_from.begin(), wide_to.begin()))
- return make_error_code(windows_error(::GetLastError()));
+ if (!::MoveFileExW(wide_from.begin(), wide_to.begin(),
+ MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING))
+ return windows_error(::GetLastError());
- return make_error_code(errc::success);
+ return success;
}
error_code resize_file(const Twine &path, uint64_t size) {
if (attributes == INVALID_FILE_ATTRIBUTES) {
// See if the file didn't actually exist.
error_code ec = make_error_code(windows_error(::GetLastError()));
- if (ec != error_code(windows_error::file_not_found) &&
- ec != error_code(windows_error::path_not_found))
+ if (ec != windows_error::file_not_found &&
+ ec != windows_error::path_not_found)
return ec;
result = false;
} else
result = true;
- return make_error_code(errc::success);
+ return success;
}
error_code equivalent(const Twine &A, const Twine &B, bool &result) {
// If both handles are invalid, it's an error.
if (HandleA == INVALID_HANDLE_VALUE &&
HandleB == INVALID_HANDLE_VALUE)
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
// If only one is invalid, it's false.
if (HandleA == INVALID_HANDLE_VALUE &&
HandleB == INVALID_HANDLE_VALUE) {
result = false;
- return make_error_code(errc::success);
+ return success;
}
// Get file information.
BY_HANDLE_FILE_INFORMATION InfoA, InfoB;
if (!::GetFileInformationByHandle(HandleA, &InfoA))
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
if (!::GetFileInformationByHandle(HandleB, &InfoB))
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
// See if it's all the same.
result =
InfoA.ftLastWriteTime.dwHighDateTime ==
InfoB.ftLastWriteTime.dwHighDateTime;
- return make_error_code(errc::success);
+ return success;
}
error_code file_size(const Twine &path, uint64_t &result) {
if (!::GetFileAttributesExW(path_utf16.begin(),
::GetFileExInfoStandard,
&FileData))
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
result =
(uint64_t(FileData.nFileSizeHigh) << (sizeof(FileData.nFileSizeLow) * 8))
+ FileData.nFileSizeLow;
- return make_error_code(errc::success);
+ return success;
+}
+
+static bool isReservedName(StringRef path) {
+ // This list of reserved names comes from MSDN, at:
+ // http://msdn.microsoft.com/en-us/library/aa365247%28v=vs.85%29.aspx
+ static const char *sReservedNames[] = { "nul", "con", "prn", "aux",
+ "com1", "com2", "com3", "com4", "com5", "com6",
+ "com7", "com8", "com9", "lpt1", "lpt2", "lpt3",
+ "lpt4", "lpt5", "lpt6", "lpt7", "lpt8", "lpt9" };
+
+ // First, check to see if this is a device namespace, which always
+ // starts with \\.\, since device namespaces are not legal file paths.
+ if (path.startswith("\\\\.\\"))
+ return true;
+
+ // Then compare against the list of ancient reserved names
+ for (size_t i = 0; i < sizeof(sReservedNames) / sizeof(const char *); ++i) {
+ if (path.equals_lower(sReservedNames[i]))
+ return true;
+ }
+
+ // The path isn't what we consider reserved.
+ return false;
}
error_code status(const Twine &path, file_status &result) {
SmallString<128> path_storage;
SmallVector<wchar_t, 128> path_utf16;
- if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
+ StringRef path8 = path.toStringRef(path_storage);
+ if (isReservedName(path8)) {
+ result = file_status(file_type::character_file);
+ return success;
+ }
+
+ if (error_code ec = UTF8ToUTF16(path8,
path_utf16))
return ec;
}
error_code unique_file(const Twine &model, int &result_fd,
- SmallVectorImpl<char> &result_path) {
+ SmallVectorImpl<char> &result_path,
+ bool makeAbsolute) {
// Use result_path as temp storage.
result_path.set_size(0);
StringRef m = model.toStringRef(result_path);
SmallVector<wchar_t, 128> model_utf16;
if (error_code ec = UTF8ToUTF16(m, model_utf16)) return ec;
- // Make model absolute by prepending a temp directory if it's not already.
- bool absolute;
- if (error_code ec = path::is_absolute(m, absolute)) return ec;
+ if (makeAbsolute) {
+ // Make model absolute by prepending a temp directory if it's not already.
+ bool absolute = path::is_absolute(m);
- if (!absolute) {
- SmallVector<wchar_t, 64> temp_dir;
- if (error_code ec = TempDir(temp_dir)) return ec;
- // Handle c: by removing it.
- if (model_utf16.size() > 2 && model_utf16[1] == L':') {
- model_utf16.erase(model_utf16.begin(), model_utf16.begin() + 2);
+ if (!absolute) {
+ SmallVector<wchar_t, 64> temp_dir;
+ if (error_code ec = TempDir(temp_dir)) return ec;
+ // Handle c: by removing it.
+ if (model_utf16.size() > 2 && model_utf16[1] == L':') {
+ model_utf16.erase(model_utf16.begin(), model_utf16.begin() + 2);
+ }
+ model_utf16.insert(model_utf16.begin(), temp_dir.begin(), temp_dir.end());
}
- model_utf16.insert(model_utf16.begin(), temp_dir.begin(), temp_dir.end());
}
// Replace '%' with random chars. From here on, DO NOT modify model. It may be
SmallVector<wchar_t, 128> random_path_utf16;
// Get a Crypto Provider for CryptGenRandom.
- AutoCryptoProvider CryptoProvider;
- BOOL success = ::CryptAcquireContextW(&CryptoProvider.CryptoProvider,
- NULL,
- NULL,
- PROV_RSA_FULL,
- 0);
- if (!success)
- return make_error_code(windows_error(::GetLastError()));
+ HCRYPTPROV HCPC;
+ if (!::CryptAcquireContextW(&HCPC,
+ NULL,
+ NULL,
+ PROV_RSA_FULL,
+ CRYPT_VERIFYCONTEXT))
+ return windows_error(::GetLastError());
+ ScopedCryptContext CryptoProvider(HCPC);
retry_random_path:
random_path_utf16.set_size(0);
if (*i == L'%') {
BYTE val = 0;
if (!::CryptGenRandom(CryptoProvider, 1, &val))
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
random_path_utf16.push_back("0123456789abcdef"[val & 15]);
}
else
NULL);
if (TempFileHandle == INVALID_HANDLE_VALUE) {
// If the file existed, try again, otherwise, error.
- error_code ec = make_error_code(windows_error(::GetLastError()));
- if (ec == error_code(windows_error::file_exists))
+ error_code ec = windows_error(::GetLastError());
+ if (ec == windows_error::file_exists)
goto retry_random_path;
// Check for non-existing parent directories.
- if (ec == error_code(windows_error::path_not_found)) {
+ if (ec == windows_error::path_not_found) {
// Create the directories using result_path as temp storage.
if (error_code ec = UTF16ToUTF8(random_path_utf16.begin(),
random_path_utf16.size(), result_path))
SmallString<64> dir_to_create;
for (path::const_iterator i = path::begin(p),
e = --path::end(p); i != e; ++i) {
- if (error_code ec = path::append(dir_to_create, *i)) return ec;
+ path::append(dir_to_create, *i);
bool Exists;
if (error_code ec = exists(Twine(dir_to_create), Exists)) return ec;
if (!Exists) {
// Create the directory.
if (!::CreateDirectoryW(dir_to_create_utf16.begin(), NULL))
- return make_error_code(windows_error(::GetLastError()));
+ return windows_error(::GetLastError());
}
}
goto retry_create_file;
::DeleteFileW(random_path_utf16.begin());
// MSDN doesn't say anything about _open_osfhandle setting errno or
// GetLastError(), so just return invalid_handle.
- return make_error_code(windows_error::invalid_handle);
+ return windows_error::invalid_handle;
}
result_fd = fd;
- return make_error_code(errc::success);
+ return success;
+}
+
+error_code get_magic(const Twine &path, uint32_t len,
+ SmallVectorImpl<char> &result) {
+ SmallString<128> path_storage;
+ SmallVector<wchar_t, 128> path_utf16;
+ result.set_size(0);
+
+ // Convert path to UTF-16.
+ if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
+ path_utf16))
+ return ec;
+
+ // Open file.
+ HANDLE file = ::CreateFileW(c_str(path_utf16),
+ GENERIC_READ,
+ FILE_SHARE_READ,
+ NULL,
+ OPEN_EXISTING,
+ FILE_ATTRIBUTE_READONLY,
+ NULL);
+ if (file == INVALID_HANDLE_VALUE)
+ return windows_error(::GetLastError());
+
+ // Allocate buffer.
+ result.reserve(len);
+
+ // Get magic!
+ DWORD bytes_read = 0;
+ BOOL read_success = ::ReadFile(file, result.data(), len, &bytes_read, NULL);
+ error_code ec = windows_error(::GetLastError());
+ ::CloseHandle(file);
+ if (!read_success || (bytes_read != len)) {
+ // Set result size to the number of bytes read if it's valid.
+ if (bytes_read <= len)
+ result.set_size(bytes_read);
+ // ERROR_HANDLE_EOF is mapped to errc::value_too_large.
+ return ec;
+ }
+
+ result.set_size(len);
+ return success;
+}
+
+error_code detail::directory_iterator_construct(detail::DirIterState &it,
+ StringRef path){
+ SmallVector<wchar_t, 128> path_utf16;
+
+ if (error_code ec = UTF8ToUTF16(path,
+ path_utf16))
+ return ec;
+
+ // Convert path to the format that Windows is happy with.
+ if (path_utf16.size() > 0 &&
+ !is_separator(path_utf16[path.size() - 1]) &&
+ path_utf16[path.size() - 1] != L':') {
+ path_utf16.push_back(L'\\');
+ path_utf16.push_back(L'*');
+ } else {
+ path_utf16.push_back(L'*');
+ }
+
+ // Get the first directory entry.
+ WIN32_FIND_DATAW FirstFind;
+ ScopedFindHandle FindHandle(::FindFirstFileW(c_str(path_utf16), &FirstFind));
+ if (!FindHandle)
+ return windows_error(::GetLastError());
+
+ size_t FilenameLen = ::wcslen(FirstFind.cFileName);
+ while ((FilenameLen == 1 && FirstFind.cFileName[0] == L'.') ||
+ (FilenameLen == 2 && FirstFind.cFileName[0] == L'.' &&
+ FirstFind.cFileName[1] == L'.'))
+ if (!::FindNextFileW(FindHandle, &FirstFind)) {
+ error_code ec = windows_error(::GetLastError());
+ // Check for end.
+ if (ec == windows_error::no_more_files)
+ return detail::directory_iterator_destruct(it);
+ return ec;
+ } else
+ FilenameLen = ::wcslen(FirstFind.cFileName);
+
+ // Construct the current directory entry.
+ SmallString<128> directory_entry_name_utf8;
+ if (error_code ec = UTF16ToUTF8(FirstFind.cFileName,
+ ::wcslen(FirstFind.cFileName),
+ directory_entry_name_utf8))
+ return ec;
+
+ it.IterationHandle = intptr_t(FindHandle.take());
+ SmallString<128> directory_entry_path(path);
+ path::append(directory_entry_path, directory_entry_name_utf8.str());
+ it.CurrentEntry = directory_entry(directory_entry_path.str());
+
+ return success;
+}
+
+error_code detail::directory_iterator_destruct(detail::DirIterState &it) {
+ if (it.IterationHandle != 0)
+ // Closes the handle if it's valid.
+ ScopedFindHandle close(HANDLE(it.IterationHandle));
+ it.IterationHandle = 0;
+ it.CurrentEntry = directory_entry();
+ return success;
+}
+
+error_code detail::directory_iterator_increment(detail::DirIterState &it) {
+ WIN32_FIND_DATAW FindData;
+ if (!::FindNextFileW(HANDLE(it.IterationHandle), &FindData)) {
+ error_code ec = windows_error(::GetLastError());
+ // Check for end.
+ if (ec == windows_error::no_more_files)
+ return detail::directory_iterator_destruct(it);
+ return ec;
+ }
+
+ size_t FilenameLen = ::wcslen(FindData.cFileName);
+ if ((FilenameLen == 1 && FindData.cFileName[0] == L'.') ||
+ (FilenameLen == 2 && FindData.cFileName[0] == L'.' &&
+ FindData.cFileName[1] == L'.'))
+ return directory_iterator_increment(it);
+
+ SmallString<128> directory_entry_path_utf8;
+ if (error_code ec = UTF16ToUTF8(FindData.cFileName,
+ ::wcslen(FindData.cFileName),
+ directory_entry_path_utf8))
+ return ec;
+
+ it.CurrentEntry.replace_filename(Twine(directory_entry_path_utf8));
+ return success;
}
+
} // end namespace fs
} // end namespace sys
} // end namespace llvm
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