2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
//===-- FileSystem.cpp ------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/windows/windows.h"
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#include <shellapi.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "lldb/Host/FileSystem.h"
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#include "lldb/Host/windows/AutoHandle.h"
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#include "lldb/Host/windows/PosixApi.h"
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#include "llvm/Support/ConvertUTF.h"
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#include "llvm/Support/FileSystem.h"
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using namespace lldb_private;
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const char *FileSystem::DEV_NULL = "nul";
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const char *FileSystem::PATH_CONVERSION_ERROR =
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"Error converting path between UTF-8 and native encoding";
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Status FileSystem::Symlink(const FileSpec &src, const FileSpec &dst) {
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Status error;
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std::wstring wsrc, wdst;
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if (!llvm::ConvertUTF8toWide(src.GetCString(), wsrc) ||
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!llvm::ConvertUTF8toWide(dst.GetCString(), wdst))
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error.SetErrorString(PATH_CONVERSION_ERROR);
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if (error.Fail())
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return error;
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DWORD attrib = ::GetFileAttributesW(wdst.c_str());
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if (attrib == INVALID_FILE_ATTRIBUTES) {
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error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
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return error;
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}
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bool is_directory = !!(attrib & FILE_ATTRIBUTE_DIRECTORY);
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DWORD flag = is_directory ? SYMBOLIC_LINK_FLAG_DIRECTORY : 0;
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BOOL result = ::CreateSymbolicLinkW(wsrc.c_str(), wdst.c_str(), flag);
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if (!result)
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error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
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return error;
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}
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Status FileSystem::Readlink(const FileSpec &src, FileSpec &dst) {
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Status error;
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std::wstring wsrc;
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if (!llvm::ConvertUTF8toWide(src.GetCString(), wsrc)) {
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error.SetErrorString(PATH_CONVERSION_ERROR);
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return error;
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}
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HANDLE h = ::CreateFileW(wsrc.c_str(), GENERIC_READ,
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FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
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OPEN_EXISTING, FILE_FLAG_OPEN_REPARSE_POINT, NULL);
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if (h == INVALID_HANDLE_VALUE) {
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error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
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return error;
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}
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std::vector<wchar_t> buf(PATH_MAX + 1);
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// Subtract 1 from the path length since this function does not add a null
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// terminator.
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DWORD result = ::GetFinalPathNameByHandleW(
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h, buf.data(), buf.size() - 1, FILE_NAME_NORMALIZED | VOLUME_NAME_DOS);
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std::string path;
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if (result == 0)
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error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
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else if (!llvm::convertWideToUTF8(buf.data(), path))
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error.SetErrorString(PATH_CONVERSION_ERROR);
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else
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dst.SetFile(path, FileSpec::Style::native);
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::CloseHandle(h);
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return error;
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}
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Status FileSystem::ResolveSymbolicLink(const FileSpec &src, FileSpec &dst) {
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return Status("ResolveSymbolicLink() isn't implemented on Windows");
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}
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FILE *FileSystem::Fopen(const char *path, const char *mode) {
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std::wstring wpath, wmode;
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if (!llvm::ConvertUTF8toWide(path, wpath))
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return nullptr;
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if (!llvm::ConvertUTF8toWide(mode, wmode))
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return nullptr;
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FILE *file;
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if (_wfopen_s(&file, wpath.c_str(), wmode.c_str()) != 0)
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return nullptr;
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return file;
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}
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int FileSystem::Open(const char *path, int flags, int mode) {
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std::wstring wpath;
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if (!llvm::ConvertUTF8toWide(path, wpath))
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return -1;
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int result;
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::_wsopen_s(&result, wpath.c_str(), flags, _SH_DENYNO, mode);
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return result;
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}
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