Rename PathV2 to just Path now that it is the only one.
llvm-svn: 185015
diff --git a/llvm/lib/Support/Windows/Path.inc b/llvm/lib/Support/Windows/Path.inc
new file mode 100644
index 0000000..2b24c54
--- /dev/null
+++ b/llvm/lib/Support/Windows/Path.inc
@@ -0,0 +1,1092 @@
+//===- llvm/Support/Windows/Path.inc - Windows Path Impl --------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Windows specific implementation of the Path API.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+//=== WARNING: Implementation here must contain only generic Windows code that
+//=== is guaranteed to work on *all* Windows variants.
+//===----------------------------------------------------------------------===//
+
+#include "Windows.h"
+#include <fcntl.h>
+#include <io.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#undef max
+
+// MinGW doesn't define this.
+#ifndef _ERRNO_T_DEFINED
+#define _ERRNO_T_DEFINED
+typedef int errno_t;
+#endif
+
+using namespace llvm;
+
+namespace {
+ typedef BOOLEAN (WINAPI *PtrCreateSymbolicLinkW)(
+ /*__in*/ LPCWSTR lpSymlinkFileName,
+ /*__in*/ LPCWSTR lpTargetFileName,
+ /*__in*/ DWORD dwFlags);
+
+ PtrCreateSymbolicLinkW create_symbolic_link_api = PtrCreateSymbolicLinkW(
+ ::GetProcAddress(::GetModuleHandleA("kernel32.dll"),
+ "CreateSymbolicLinkW"));
+
+ 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 windows_error(::GetLastError());
+
+ utf16.reserve(len + 1);
+ utf16.set_size(len);
+
+ len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
+ utf8.begin(), utf8.size(),
+ utf16.begin(), utf16.size());
+
+ if (len == 0)
+ return windows_error(::GetLastError());
+
+ // Make utf16 null terminated.
+ utf16.push_back(0);
+ utf16.pop_back();
+
+ return error_code::success();
+ }
+
+ error_code UTF16ToUTF8(const wchar_t *utf16, size_t utf16_len,
+ SmallVectorImpl<char> &utf8) {
+ // Get length.
+ int len = ::WideCharToMultiByte(CP_UTF8, 0,
+ utf16, utf16_len,
+ utf8.begin(), 0,
+ NULL, NULL);
+
+ if (len == 0)
+ return windows_error(::GetLastError());
+
+ utf8.reserve(len);
+ utf8.set_size(len);
+
+ // Now do the actual conversion.
+ len = ::WideCharToMultiByte(CP_UTF8, 0,
+ utf16, utf16_len,
+ utf8.data(), utf8.size(),
+ NULL, NULL);
+
+ if (len == 0)
+ return windows_error(::GetLastError());
+
+ // Make utf8 null terminated.
+ utf8.push_back(0);
+ utf8.pop_back();
+
+ return error_code::success();
+ }
+
+ error_code TempDir(SmallVectorImpl<wchar_t> &result) {
+ retry_temp_dir:
+ DWORD len = ::GetTempPathW(result.capacity(), result.begin());
+
+ if (len == 0)
+ return windows_error(::GetLastError());
+
+ if (len > result.capacity()) {
+ result.reserve(len);
+ goto retry_temp_dir;
+ }
+
+ result.set_size(len);
+ return error_code::success();
+ }
+
+ bool is_separator(const wchar_t value) {
+ switch (value) {
+ case L'\\':
+ case L'/':
+ return true;
+ default:
+ return false;
+ }
+ }
+}
+
+namespace llvm {
+namespace sys {
+namespace fs {
+
+std::string getMainExecutable(const char *argv0, void *MainExecAddr) {
+ char pathname[MAX_PATH];
+ DWORD ret = ::GetModuleFileNameA(NULL, pathname, MAX_PATH);
+ return ret != MAX_PATH ? pathname : "";
+}
+
+
+TimeValue file_status::getLastModificationTime() const {
+ ULARGE_INTEGER UI;
+ UI.LowPart = LastWriteTimeLow;
+ UI.HighPart = LastWriteTimeHigh;
+
+ TimeValue Ret;
+ Ret.fromWin32Time(UI.QuadPart);
+ return Ret;
+}
+
+error_code current_path(SmallVectorImpl<char> &result) {
+ SmallVector<wchar_t, 128> cur_path;
+ cur_path.reserve(128);
+retry_cur_dir:
+ DWORD len = ::GetCurrentDirectoryW(cur_path.capacity(), cur_path.data());
+
+ // A zero return value indicates a failure other than insufficient space.
+ if (len == 0)
+ return windows_error(::GetLastError());
+
+ // If there's insufficient space, the len returned is larger than the len
+ // given.
+ if (len > cur_path.capacity()) {
+ cur_path.reserve(len);
+ goto retry_cur_dir;
+ }
+
+ cur_path.set_size(len);
+ // cur_path now holds the current directory in utf-16. Convert to utf-8.
+
+ // Find out how much space we need. Sadly, this function doesn't return the
+ // size needed unless you tell it the result size is 0, which means you
+ // _always_ have to call it twice.
+ len = ::WideCharToMultiByte(CP_UTF8, 0,
+ cur_path.data(), cur_path.size(),
+ result.data(), 0,
+ NULL, NULL);
+
+ if (len == 0)
+ return make_error_code(windows_error(::GetLastError()));
+
+ result.reserve(len);
+ result.set_size(len);
+ // Now do the actual conversion.
+ len = ::WideCharToMultiByte(CP_UTF8, 0,
+ cur_path.data(), cur_path.size(),
+ result.data(), result.size(),
+ NULL, NULL);
+ if (len == 0)
+ return windows_error(::GetLastError());
+
+ return error_code::success();
+}
+
+error_code copy_file(const Twine &from, const Twine &to, copy_option copt) {
+ // Get arguments.
+ SmallString<128> from_storage;
+ SmallString<128> to_storage;
+ StringRef f = from.toStringRef(from_storage);
+ StringRef t = to.toStringRef(to_storage);
+
+ // Convert to utf-16.
+ SmallVector<wchar_t, 128> wide_from;
+ SmallVector<wchar_t, 128> wide_to;
+ if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
+ if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
+
+ // Copy the file.
+ BOOL res = ::CopyFileW(wide_from.begin(), wide_to.begin(),
+ copt != copy_option::overwrite_if_exists);
+
+ if (res == 0)
+ return windows_error(::GetLastError());
+
+ return error_code::success();
+}
+
+error_code create_directory(const Twine &path, bool &existed) {
+ SmallString<128> path_storage;
+ SmallVector<wchar_t, 128> path_utf16;
+
+ if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
+ path_utf16))
+ return ec;
+
+ if (!::CreateDirectoryW(path_utf16.begin(), NULL)) {
+ error_code ec = windows_error(::GetLastError());
+ if (ec == windows_error::already_exists)
+ existed = true;
+ else
+ return ec;
+ } else
+ existed = false;
+
+ return error_code::success();
+}
+
+error_code create_hard_link(const Twine &to, const Twine &from) {
+ // Get arguments.
+ SmallString<128> from_storage;
+ SmallString<128> to_storage;
+ StringRef f = from.toStringRef(from_storage);
+ StringRef t = to.toStringRef(to_storage);
+
+ // Convert to utf-16.
+ SmallVector<wchar_t, 128> wide_from;
+ SmallVector<wchar_t, 128> wide_to;
+ if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
+ if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
+
+ if (!::CreateHardLinkW(wide_from.begin(), wide_to.begin(), NULL))
+ return windows_error(::GetLastError());
+
+ return error_code::success();
+}
+
+error_code create_symlink(const Twine &to, const Twine &from) {
+ // Only do it if the function is available at runtime.
+ if (!create_symbolic_link_api)
+ return make_error_code(errc::function_not_supported);
+
+ // Get arguments.
+ SmallString<128> from_storage;
+ SmallString<128> to_storage;
+ StringRef f = from.toStringRef(from_storage);
+ StringRef t = to.toStringRef(to_storage);
+
+ // Convert to utf-16.
+ SmallVector<wchar_t, 128> wide_from;
+ SmallVector<wchar_t, 128> wide_to;
+ if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
+ if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
+
+ if (!create_symbolic_link_api(wide_from.begin(), wide_to.begin(), 0))
+ return windows_error(::GetLastError());
+
+ return error_code::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 (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 error_code::success();
+}
+
+error_code rename(const Twine &from, const Twine &to) {
+ // Get arguments.
+ SmallString<128> from_storage;
+ SmallString<128> to_storage;
+ StringRef f = from.toStringRef(from_storage);
+ StringRef t = to.toStringRef(to_storage);
+
+ // Convert to utf-16.
+ SmallVector<wchar_t, 128> wide_from;
+ SmallVector<wchar_t, 128> wide_to;
+ if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
+ if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
+
+ error_code ec = error_code::success();
+ for (int i = 0; i < 2000; i++) {
+ if (::MoveFileExW(wide_from.begin(), wide_to.begin(),
+ MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING))
+ return error_code::success();
+ ec = windows_error(::GetLastError());
+ if (ec != windows_error::access_denied)
+ break;
+ // Retry MoveFile() at ACCESS_DENIED.
+ // System scanners (eg. indexer) might open the source file when
+ // It is written and closed.
+ ::Sleep(1);
+ }
+
+ return ec;
+}
+
+error_code resize_file(const Twine &path, uint64_t size) {
+ SmallString<128> path_storage;
+ SmallVector<wchar_t, 128> path_utf16;
+
+ if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
+ path_utf16))
+ return ec;
+
+ int fd = ::_wopen(path_utf16.begin(), O_BINARY | _O_RDWR, S_IWRITE);
+ if (fd == -1)
+ return error_code(errno, generic_category());
+#ifdef HAVE__CHSIZE_S
+ errno_t error = ::_chsize_s(fd, size);
+#else
+ errno_t error = ::_chsize(fd, size);
+#endif
+ ::close(fd);
+ return error_code(error, generic_category());
+}
+
+error_code exists(const Twine &path, bool &result) {
+ SmallString<128> path_storage;
+ SmallVector<wchar_t, 128> path_utf16;
+
+ if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
+ path_utf16))
+ return ec;
+
+ DWORD attributes = ::GetFileAttributesW(path_utf16.begin());
+
+ if (attributes == INVALID_FILE_ATTRIBUTES) {
+ // See if the file didn't actually exist.
+ error_code ec = make_error_code(windows_error(::GetLastError()));
+ if (ec != windows_error::file_not_found &&
+ ec != windows_error::path_not_found)
+ return ec;
+ result = false;
+ } else
+ result = true;
+ return error_code::success();
+}
+
+bool can_write(const Twine &Path) {
+ // FIXME: take security attributes into account.
+ SmallString<128> PathStorage;
+ SmallVector<wchar_t, 128> PathUtf16;
+
+ if (UTF8ToUTF16(Path.toStringRef(PathStorage), PathUtf16))
+ return false;
+
+ DWORD Attr = ::GetFileAttributesW(PathUtf16.begin());
+ return (Attr != INVALID_FILE_ATTRIBUTES) && !(Attr & FILE_ATTRIBUTE_READONLY);
+}
+
+bool can_execute(const Twine &Path) {
+ SmallString<128> PathStorage;
+ SmallVector<wchar_t, 128> PathUtf16;
+
+ if (UTF8ToUTF16(Path.toStringRef(PathStorage), PathUtf16))
+ return false;
+
+ DWORD Attr = ::GetFileAttributesW(PathUtf16.begin());
+ return Attr != INVALID_FILE_ATTRIBUTES;
+}
+
+bool equivalent(file_status A, file_status B) {
+ assert(status_known(A) && status_known(B));
+ return A.FileIndexHigh == B.FileIndexHigh &&
+ A.FileIndexLow == B.FileIndexLow &&
+ A.FileSizeHigh == B.FileSizeHigh &&
+ A.FileSizeLow == B.FileSizeLow &&
+ A.LastWriteTimeHigh == B.LastWriteTimeHigh &&
+ A.LastWriteTimeLow == B.LastWriteTimeLow &&
+ A.VolumeSerialNumber == B.VolumeSerialNumber;
+}
+
+error_code equivalent(const Twine &A, const Twine &B, bool &result) {
+ file_status fsA, fsB;
+ if (error_code ec = status(A, fsA)) return ec;
+ if (error_code ec = status(B, fsB)) return ec;
+ result = equivalent(fsA, fsB);
+ return error_code::success();
+}
+
+error_code file_size(const Twine &path, uint64_t &result) {
+ SmallString<128> path_storage;
+ SmallVector<wchar_t, 128> path_utf16;
+
+ if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
+ path_utf16))
+ return ec;
+
+ WIN32_FILE_ATTRIBUTE_DATA FileData;
+ if (!::GetFileAttributesExW(path_utf16.begin(),
+ ::GetFileExInfoStandard,
+ &FileData))
+ return windows_error(::GetLastError());
+
+ result =
+ (uint64_t(FileData.nFileSizeHigh) << (sizeof(FileData.nFileSizeLow) * 8))
+ + FileData.nFileSizeLow;
+
+ return error_code::success();
+}
+
+error_code getUniqueID(const Twine Path, uint64_t &Result) {
+ file_status Status;
+ if (error_code E = status(Path, Status))
+ return E;
+
+ // The file is uniquely identified by the volume serial number along
+ // with the 64-bit file identifier.
+ Result = (static_cast<uint64_t>(Status.FileIndexHigh) << 32ULL) |
+ static_cast<uint64_t>(Status.FileIndexLow);
+
+ // Because the serial number is 32-bits, but we've already used up all 64
+ // bits for the file index, XOR the serial number into the high 32 bits of
+ // the resulting value. We could potentially get collisons from this, but
+ // the likelihood is low.
+ Result ^= (static_cast<uint64_t>(Status.VolumeSerialNumber) << 32ULL);
+
+ return error_code::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;
+
+ StringRef path8 = path.toStringRef(path_storage);
+ if (isReservedName(path8)) {
+ result = file_status(file_type::character_file);
+ return error_code::success();
+ }
+
+ if (error_code ec = UTF8ToUTF16(path8, path_utf16))
+ return ec;
+
+ DWORD attr = ::GetFileAttributesW(path_utf16.begin());
+ if (attr == INVALID_FILE_ATTRIBUTES)
+ goto handle_status_error;
+
+ // Handle reparse points.
+ if (attr & FILE_ATTRIBUTE_REPARSE_POINT) {
+ ScopedFileHandle h(
+ ::CreateFileW(path_utf16.begin(),
+ 0, // Attributes only.
+ FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+ NULL,
+ OPEN_EXISTING,
+ FILE_FLAG_BACKUP_SEMANTICS,
+ 0));
+ if (!h)
+ goto handle_status_error;
+ }
+
+ if (attr & FILE_ATTRIBUTE_DIRECTORY)
+ result = file_status(file_type::directory_file);
+ else {
+ result = file_status(file_type::regular_file);
+ ScopedFileHandle h(
+ ::CreateFileW(path_utf16.begin(),
+ 0, // Attributes only.
+ FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+ NULL,
+ OPEN_EXISTING,
+ FILE_FLAG_BACKUP_SEMANTICS,
+ 0));
+ if (!h)
+ goto handle_status_error;
+ BY_HANDLE_FILE_INFORMATION Info;
+ if (!::GetFileInformationByHandle(h, &Info))
+ goto handle_status_error;
+ result.FileIndexHigh = Info.nFileIndexHigh;
+ result.FileIndexLow = Info.nFileIndexLow;
+ result.FileSizeHigh = Info.nFileSizeHigh;
+ result.FileSizeLow = Info.nFileSizeLow;
+ result.LastWriteTimeHigh = Info.ftLastWriteTime.dwHighDateTime;
+ result.LastWriteTimeLow = Info.ftLastWriteTime.dwLowDateTime;
+ result.VolumeSerialNumber = Info.dwVolumeSerialNumber;
+ }
+
+ return error_code::success();
+
+handle_status_error:
+ error_code ec = windows_error(::GetLastError());
+ if (ec == windows_error::file_not_found ||
+ ec == windows_error::path_not_found)
+ result = file_status(file_type::file_not_found);
+ else if (ec == windows_error::sharing_violation)
+ result = file_status(file_type::type_unknown);
+ else {
+ result = file_status(file_type::status_error);
+ return ec;
+ }
+
+ return error_code::success();
+}
+
+
+// Modifies permissions on a file.
+error_code permissions(const Twine &path, perms prms) {
+#if 0 // verify code below before enabling:
+ // If the permissions bits are not trying to modify
+ // "write" permissions, there is nothing to do.
+ if (!(prms & (owner_write|group_write|others_write)))
+ return error_code::success();
+
+ SmallString<128> path_storage;
+ SmallVector<wchar_t, 128> path_utf16;
+
+ if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
+ path_utf16))
+ return ec;
+
+ DWORD attributes = ::GetFileAttributesW(path_utf16.begin());
+
+ if (prms & add_perms) {
+ attributes &= ~FILE_ATTRIBUTE_READONLY;
+ }
+ else if (prms & remove_perms) {
+ attributes |= FILE_ATTRIBUTE_READONLY;
+ }
+ else {
+ assert(0 && "neither add_perms or remove_perms is set");
+ }
+
+ if ( ! ::SetFileAttributesW(path_utf16.begin(), attributes))
+ return windows_error(::GetLastError());
+#endif
+ return error_code::success();
+}
+
+error_code setLastModificationAndAccessTime(int FD, TimeValue Time) {
+ ULARGE_INTEGER UI;
+ UI.QuadPart = Time.toWin32Time();
+ FILETIME FT;
+ FT.dwLowDateTime = UI.LowPart;
+ FT.dwHighDateTime = UI.HighPart;
+ HANDLE FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
+ if (!SetFileTime(FileHandle, NULL, &FT, &FT))
+ return windows_error(::GetLastError());
+ return error_code::success();
+}
+
+// FIXME: mode should be used here and default to user r/w only,
+// it currently comes in as a UNIX mode.
+error_code unique_file(const Twine &model, int &result_fd,
+ SmallVectorImpl<char> &result_path,
+ bool makeAbsolute, unsigned mode) {
+ // 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;
+
+ 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);
+ }
+ 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
+ // needed if the randomly chosen path already exists.
+ SmallVector<wchar_t, 128> random_path_utf16;
+
+ // Get a Crypto Provider for CryptGenRandom.
+ 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);
+ for (SmallVectorImpl<wchar_t>::const_iterator i = model_utf16.begin(),
+ e = model_utf16.end();
+ i != e; ++i) {
+ if (*i == L'%') {
+ BYTE val = 0;
+ if (!::CryptGenRandom(CryptoProvider, 1, &val))
+ return windows_error(::GetLastError());
+ random_path_utf16.push_back("0123456789abcdef"[val & 15]);
+ }
+ else
+ random_path_utf16.push_back(*i);
+ }
+ // Make random_path_utf16 null terminated.
+ random_path_utf16.push_back(0);
+ random_path_utf16.pop_back();
+
+ // Make sure we don't fall into an infinite loop by constantly trying
+ // to create the parent path.
+ bool TriedToCreateParent = false;
+
+ // Try to create + open the path.
+retry_create_file:
+ HANDLE TempFileHandle = ::CreateFileW(random_path_utf16.begin(),
+ GENERIC_READ | GENERIC_WRITE,
+ FILE_SHARE_READ,
+ NULL,
+ // Return ERROR_FILE_EXISTS if the file
+ // already exists.
+ CREATE_NEW,
+ FILE_ATTRIBUTE_TEMPORARY,
+ NULL);
+ if (TempFileHandle == INVALID_HANDLE_VALUE) {
+ // If the file existed, try again, otherwise, error.
+ error_code ec = windows_error(::GetLastError());
+ if (ec == windows_error::file_exists)
+ goto retry_random_path;
+ // Check for non-existing parent directories.
+ if (ec == windows_error::path_not_found && !TriedToCreateParent) {
+ TriedToCreateParent = true;
+
+ // Create the directories using result_path as temp storage.
+ if (error_code ec = UTF16ToUTF8(random_path_utf16.begin(),
+ random_path_utf16.size(), result_path))
+ return ec;
+ StringRef p(result_path.begin(), result_path.size());
+ SmallString<64> dir_to_create;
+ for (path::const_iterator i = path::begin(p),
+ e = --path::end(p); i != e; ++i) {
+ path::append(dir_to_create, *i);
+ bool Exists;
+ if (error_code ec = exists(Twine(dir_to_create), Exists)) return ec;
+ if (!Exists) {
+ // If c: doesn't exist, bail.
+ if (i->endswith(":"))
+ return ec;
+
+ SmallVector<wchar_t, 64> dir_to_create_utf16;
+ if (error_code ec = UTF8ToUTF16(dir_to_create, dir_to_create_utf16))
+ return ec;
+
+ // Create the directory.
+ if (!::CreateDirectoryW(dir_to_create_utf16.begin(), NULL))
+ return windows_error(::GetLastError());
+ }
+ }
+ goto retry_create_file;
+ }
+ return ec;
+ }
+
+ // Set result_path to the utf-8 representation of the path.
+ if (error_code ec = UTF16ToUTF8(random_path_utf16.begin(),
+ random_path_utf16.size(), result_path)) {
+ ::CloseHandle(TempFileHandle);
+ ::DeleteFileW(random_path_utf16.begin());
+ return ec;
+ }
+
+ // Convert the Windows API file handle into a C-runtime handle.
+ int fd = ::_open_osfhandle(intptr_t(TempFileHandle), 0);
+ if (fd == -1) {
+ ::CloseHandle(TempFileHandle);
+ ::DeleteFileW(random_path_utf16.begin());
+ // MSDN doesn't say anything about _open_osfhandle setting errno or
+ // GetLastError(), so just return invalid_handle.
+ return windows_error::invalid_handle;
+ }
+
+ result_fd = fd;
+ return error_code::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 error_code::success();
+}
+
+error_code mapped_file_region::init(int FD, bool CloseFD, uint64_t Offset) {
+ FileDescriptor = FD;
+ // Make sure that the requested size fits within SIZE_T.
+ if (Size > std::numeric_limits<SIZE_T>::max()) {
+ if (FileDescriptor) {
+ if (CloseFD)
+ _close(FileDescriptor);
+ } else
+ ::CloseHandle(FileHandle);
+ return make_error_code(errc::invalid_argument);
+ }
+
+ DWORD flprotect;
+ switch (Mode) {
+ case readonly: flprotect = PAGE_READONLY; break;
+ case readwrite: flprotect = PAGE_READWRITE; break;
+ case priv: flprotect = PAGE_WRITECOPY; break;
+ default: llvm_unreachable("invalid mapping mode");
+ }
+
+ FileMappingHandle = ::CreateFileMapping(FileHandle,
+ 0,
+ flprotect,
+ Size >> 32,
+ Size & 0xffffffff,
+ 0);
+ if (FileMappingHandle == NULL) {
+ error_code ec = windows_error(GetLastError());
+ if (FileDescriptor) {
+ if (CloseFD)
+ _close(FileDescriptor);
+ } else
+ ::CloseHandle(FileHandle);
+ return ec;
+ }
+
+ DWORD dwDesiredAccess;
+ switch (Mode) {
+ case readonly: dwDesiredAccess = FILE_MAP_READ; break;
+ case readwrite: dwDesiredAccess = FILE_MAP_WRITE; break;
+ case priv: dwDesiredAccess = FILE_MAP_COPY; break;
+ default: llvm_unreachable("invalid mapping mode");
+ }
+ Mapping = ::MapViewOfFile(FileMappingHandle,
+ dwDesiredAccess,
+ Offset >> 32,
+ Offset & 0xffffffff,
+ Size);
+ if (Mapping == NULL) {
+ error_code ec = windows_error(GetLastError());
+ ::CloseHandle(FileMappingHandle);
+ if (FileDescriptor) {
+ if (CloseFD)
+ _close(FileDescriptor);
+ } else
+ ::CloseHandle(FileHandle);
+ return ec;
+ }
+
+ if (Size == 0) {
+ MEMORY_BASIC_INFORMATION mbi;
+ SIZE_T Result = VirtualQuery(Mapping, &mbi, sizeof(mbi));
+ if (Result == 0) {
+ error_code ec = windows_error(GetLastError());
+ ::UnmapViewOfFile(Mapping);
+ ::CloseHandle(FileMappingHandle);
+ if (FileDescriptor) {
+ if (CloseFD)
+ _close(FileDescriptor);
+ } else
+ ::CloseHandle(FileHandle);
+ return ec;
+ }
+ Size = mbi.RegionSize;
+ }
+
+ // Close all the handles except for the view. It will keep the other handles
+ // alive.
+ ::CloseHandle(FileMappingHandle);
+ if (FileDescriptor) {
+ if (CloseFD)
+ _close(FileDescriptor); // Also closes FileHandle.
+ } else
+ ::CloseHandle(FileHandle);
+ return error_code::success();
+}
+
+mapped_file_region::mapped_file_region(const Twine &path,
+ mapmode mode,
+ uint64_t length,
+ uint64_t offset,
+ error_code &ec)
+ : Mode(mode)
+ , Size(length)
+ , Mapping()
+ , FileDescriptor()
+ , FileHandle(INVALID_HANDLE_VALUE)
+ , FileMappingHandle() {
+ SmallString<128> path_storage;
+ SmallVector<wchar_t, 128> path_utf16;
+
+ // Convert path to UTF-16.
+ if ((ec = UTF8ToUTF16(path.toStringRef(path_storage), path_utf16)))
+ return;
+
+ // Get file handle for creating a file mapping.
+ FileHandle = ::CreateFileW(c_str(path_utf16),
+ Mode == readonly ? GENERIC_READ
+ : GENERIC_READ | GENERIC_WRITE,
+ Mode == readonly ? FILE_SHARE_READ
+ : 0,
+ 0,
+ Mode == readonly ? OPEN_EXISTING
+ : OPEN_ALWAYS,
+ Mode == readonly ? FILE_ATTRIBUTE_READONLY
+ : FILE_ATTRIBUTE_NORMAL,
+ 0);
+ if (FileHandle == INVALID_HANDLE_VALUE) {
+ ec = windows_error(::GetLastError());
+ return;
+ }
+
+ FileDescriptor = 0;
+ ec = init(FileDescriptor, true, offset);
+ if (ec) {
+ Mapping = FileMappingHandle = 0;
+ FileHandle = INVALID_HANDLE_VALUE;
+ FileDescriptor = 0;
+ }
+}
+
+mapped_file_region::mapped_file_region(int fd,
+ bool closefd,
+ mapmode mode,
+ uint64_t length,
+ uint64_t offset,
+ error_code &ec)
+ : Mode(mode)
+ , Size(length)
+ , Mapping()
+ , FileDescriptor(fd)
+ , FileHandle(INVALID_HANDLE_VALUE)
+ , FileMappingHandle() {
+ FileHandle = reinterpret_cast<HANDLE>(_get_osfhandle(fd));
+ if (FileHandle == INVALID_HANDLE_VALUE) {
+ if (closefd)
+ _close(FileDescriptor);
+ FileDescriptor = 0;
+ ec = make_error_code(errc::bad_file_descriptor);
+ return;
+ }
+
+ ec = init(FileDescriptor, closefd, offset);
+ if (ec) {
+ Mapping = FileMappingHandle = 0;
+ FileHandle = INVALID_HANDLE_VALUE;
+ FileDescriptor = 0;
+ }
+}
+
+mapped_file_region::~mapped_file_region() {
+ if (Mapping)
+ ::UnmapViewOfFile(Mapping);
+}
+
+#if LLVM_HAS_RVALUE_REFERENCES
+mapped_file_region::mapped_file_region(mapped_file_region &&other)
+ : Mode(other.Mode)
+ , Size(other.Size)
+ , Mapping(other.Mapping)
+ , FileDescriptor(other.FileDescriptor)
+ , FileHandle(other.FileHandle)
+ , FileMappingHandle(other.FileMappingHandle) {
+ other.Mapping = other.FileMappingHandle = 0;
+ other.FileHandle = INVALID_HANDLE_VALUE;
+ other.FileDescriptor = 0;
+}
+#endif
+
+mapped_file_region::mapmode mapped_file_region::flags() const {
+ assert(Mapping && "Mapping failed but used anyway!");
+ return Mode;
+}
+
+uint64_t mapped_file_region::size() const {
+ assert(Mapping && "Mapping failed but used anyway!");
+ return Size;
+}
+
+char *mapped_file_region::data() const {
+ assert(Mode != readonly && "Cannot get non const data for readonly mapping!");
+ assert(Mapping && "Mapping failed but used anyway!");
+ return reinterpret_cast<char*>(Mapping);
+}
+
+const char *mapped_file_region::const_data() const {
+ assert(Mapping && "Mapping failed but used anyway!");
+ return reinterpret_cast<const char*>(Mapping);
+}
+
+int mapped_file_region::alignment() {
+ SYSTEM_INFO SysInfo;
+ ::GetSystemInfo(&SysInfo);
+ return SysInfo.dwAllocationGranularity;
+}
+
+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 error_code::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 error_code::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 error_code::success();
+}
+
+error_code map_file_pages(const Twine &path, off_t file_offset, size_t size,
+ bool map_writable, void *&result) {
+ assert(0 && "NOT IMPLEMENTED");
+ return windows_error::invalid_function;
+}
+
+error_code unmap_file_pages(void *base, size_t size) {
+ assert(0 && "NOT IMPLEMENTED");
+ return windows_error::invalid_function;
+}
+
+
+
+} // end namespace fs
+} // end namespace sys
+} // end namespace llvm