Error
FileSystem::Hardlink(const FileSpec &src, const FileSpec &dst)
{
Error error;
std::wstring wsrc, wdst;
if (!llvm::ConvertUTF8toWide(src.GetCString(), wsrc) || !llvm::ConvertUTF8toWide(dst.GetCString(), wdst))
error.SetErrorString(PATH_CONVERSION_ERROR);
else if (!::CreateHardLinkW(wsrc.c_str(), wdst.c_str(), nullptr))
error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
return error;
}
Error
PlatformRemoteGDBServer::CreateSymlink(const FileSpec &src, // The name of the link is in src
const FileSpec &dst) // The symlink points to dst
{
Error error = m_gdb_client.CreateSymlink(src, dst);
Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM);
if (log)
log->Printf ("PlatformRemoteGDBServer::CreateSymlink(src='%s', dst='%s') error = %u (%s)",
src.GetCString(), dst.GetCString(), error.GetError(), error.AsCString());
return error;
}
Status FileSystem::Readlink(const FileSpec &src, FileSpec &dst) {
Status error;
std::wstring wsrc;
if (!llvm::ConvertUTF8toWide(src.GetCString(), wsrc)) {
error.SetErrorString(PATH_CONVERSION_ERROR);
return error;
}
HANDLE h = ::CreateFileW(wsrc.c_str(), GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, FILE_FLAG_OPEN_REPARSE_POINT, NULL);
if (h == INVALID_HANDLE_VALUE) {
error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
return error;
}
std::vector<wchar_t> buf(PATH_MAX + 1);
// Subtract 1 from the path length since this function does not add a null
// terminator.
DWORD result = ::GetFinalPathNameByHandleW(
h, buf.data(), buf.size() - 1, FILE_NAME_NORMALIZED | VOLUME_NAME_DOS);
std::string path;
if (result == 0)
error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
else if (!llvm::convertWideToUTF8(buf.data(), path))
error.SetErrorString(PATH_CONVERSION_ERROR);
else
dst.SetFile(path, false);
::CloseHandle(h);
return error;
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
StringExtractorGDBRemote &packet) {
packet.SetFilePos(::strlen("vFile:open:"));
std::string path;
packet.GetHexByteStringTerminatedBy(path, ',');
if (!path.empty()) {
if (packet.GetChar() == ',') {
uint32_t flags =
File::ConvertOpenOptionsForPOSIXOpen(packet.GetHexMaxU32(false, 0));
if (packet.GetChar() == ',') {
mode_t mode = packet.GetHexMaxU32(false, 0600);
Error error;
const FileSpec path_spec{path, true};
int fd = ::open(path_spec.GetCString(), flags, mode);
const int save_errno = fd == -1 ? errno : 0;
StreamString response;
response.PutChar('F');
response.Printf("%i", fd);
if (save_errno)
response.Printf(",%i", save_errno);
return SendPacketNoLock(response.GetString());
}
}
}
return SendErrorResponse(18);
}
Error PlatformRemoteGDBServer::Unlink(const FileSpec &file_spec) {
Error error = m_gdb_client.Unlink(file_spec);
Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM);
if (log)
log->Printf("PlatformRemoteGDBServer::Unlink(path='%s') error = %u (%s)",
file_spec.GetCString(), error.GetError(), error.AsCString());
return error;
}
Error
PlatformRemoteGDBServer::MakeDirectory(const FileSpec &file_spec, uint32_t mode)
{
Error error = m_gdb_client.MakeDirectory(file_spec, mode);
Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM);
if (log)
log->Printf ("PlatformRemoteGDBServer::MakeDirectory(path='%s', mode=%o) error = %u (%s)",
file_spec.GetCString(), mode, error.GetError(), error.AsCString());
return error;
}
Error
PlatformRemoteGDBServer::SetFilePermissions(const FileSpec &file_spec,
uint32_t file_permissions)
{
Error error = m_gdb_client.SetFilePermissions(file_spec, file_permissions);
Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM);
if (log)
log->Printf ("PlatformRemoteGDBServer::SetFilePermissions(path='%s', file_permissions=%o) error = %u (%s)",
file_spec.GetCString(), file_permissions, error.GetError(), error.AsCString());
return error;
}
Status FileSystem::Symlink(const FileSpec &src, const FileSpec &dst) {
Status error;
std::wstring wsrc, wdst;
if (!llvm::ConvertUTF8toWide(src.GetCString(), wsrc) ||
!llvm::ConvertUTF8toWide(dst.GetCString(), wdst))
error.SetErrorString(PATH_CONVERSION_ERROR);
if (error.Fail())
return error;
DWORD attrib = ::GetFileAttributesW(wdst.c_str());
if (attrib == INVALID_FILE_ATTRIBUTES) {
error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
return error;
}
bool is_directory = !!(attrib & FILE_ATTRIBUTE_DIRECTORY);
DWORD flag = is_directory ? SYMBOLIC_LINK_FLAG_DIRECTORY : 0;
BOOL result = ::CreateSymbolicLinkW(wsrc.c_str(), wdst.c_str(), flag);
if (!result)
error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
return error;
}
bool
ProcessMonitor::DupDescriptor(const FileSpec &file_spec, int fd, int flags)
{
int target_fd = open(file_spec.GetCString(), flags, 0666);
if (target_fd == -1)
return false;
if (dup2(target_fd, fd) == -1)
return false;
return (close(target_fd) == -1) ? false : true;
}
bool PlatformRemoteGDBServer::SetRemoteWorkingDirectory(
const FileSpec &working_dir) {
if (IsConnected()) {
// Clear the working directory it case it doesn't get set correctly. This
// will
// for use to re-read it
Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM);
if (log)
log->Printf("PlatformRemoteGDBServer::SetRemoteWorkingDirectory('%s')",
working_dir.GetCString());
return m_gdb_client.SetWorkingDir(working_dir) == 0;
} else
return Platform::SetRemoteWorkingDirectory(working_dir);
}
Error
FileSystem::Unlink(const FileSpec &file_spec)
{
Error error;
std::wstring path;
if (!llvm::ConvertUTF8toWide(file_spec.GetCString(), path))
{
error.SetErrorString(PATH_CONVERSION_ERROR);
return error;
}
BOOL result = ::DeleteFileW(path.c_str());
if (!result)
error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
return error;
}
static void DupDescriptor(int error_fd, const FileSpec &file_spec, int fd,
int flags) {
int target_fd = ::open(file_spec.GetCString(), flags, 0666);
if (target_fd == -1)
ExitWithError(error_fd, "DupDescriptor-open");
if (target_fd == fd)
return;
if (::dup2(target_fd, fd) == -1)
ExitWithError(error_fd, "DupDescriptor-dup2");
::close(target_fd);
return;
}
uint32_t
File::GetPermissions(const FileSpec &file_spec, Error &error)
{
if (file_spec)
{
struct stat file_stats;
if (::stat(file_spec.GetCString(), &file_stats) == -1)
error.SetErrorToErrno();
else
{
error.Clear();
return file_stats.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
}
}
else
error.SetErrorString ("empty file spec");
return 0;
}
int
FileSystem::GetHardlinkCount(const FileSpec &file_spec)
{
std::wstring path;
if (!llvm::ConvertUTF8toWide(file_spec.GetCString(), path))
return -1;
HANDLE file_handle = ::CreateFileW(path.c_str(), FILE_READ_ATTRIBUTES, FILE_SHARE_READ, nullptr, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, nullptr);
if (file_handle == INVALID_HANDLE_VALUE)
return -1;
AutoHandle auto_file_handle(file_handle);
BY_HANDLE_FILE_INFORMATION file_info;
if (::GetFileInformationByHandle(file_handle, &file_info))
return file_info.nNumberOfLinks;
return -1;
}
Error
FileSystem::GetFilePermissions(const FileSpec &file_spec, uint32_t &file_permissions)
{
Error error;
// Beware that Windows's permission model is different from Unix's, and it's
// not clear if this API is supposed to check ACLs. To match the caller's
// expectations as closely as possible, we'll use Microsoft's _stat, which
// attempts to emulate POSIX stat. This should be good enough for basic
// checks like FileSpec::Readable.
struct _stat file_stats;
if (::_stat(file_spec.GetCString(), &file_stats) == 0)
{
// The owner permission bits in "st_mode" currently match the definitions
// for the owner file mode bits.
file_permissions = file_stats.st_mode & (_S_IREAD | _S_IWRITE | _S_IEXEC);
}
else
{
error.SetErrorToErrno();
}
return error;
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerCommon::Handle_qModuleInfo (StringExtractorGDBRemote &packet)
{
packet.SetFilePos(::strlen ("qModuleInfo:"));
std::string module_path;
packet.GetHexByteStringTerminatedBy(module_path, ';');
if (module_path.empty())
return SendErrorResponse (1);
if (packet.GetChar() != ';')
return SendErrorResponse (2);
std::string triple;
packet.GetHexByteString(triple);
ArchSpec arch(triple.c_str());
const FileSpec req_module_path_spec(module_path.c_str(), true);
const FileSpec module_path_spec = FindModuleFile(req_module_path_spec.GetPath(), arch);
const ModuleSpec module_spec(module_path_spec, arch);
ModuleSpecList module_specs;
if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0, module_specs))
return SendErrorResponse (3);
ModuleSpec matched_module_spec;
if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
return SendErrorResponse (4);
const auto file_offset = matched_module_spec.GetObjectOffset();
const auto file_size = matched_module_spec.GetObjectSize();
const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
StreamGDBRemote response;
if (uuid_str.empty())
{
std::string md5_hash;
if (!FileSystem::CalculateMD5AsString(matched_module_spec.GetFileSpec(), file_offset, file_size, md5_hash))
return SendErrorResponse (5);
response.PutCString ("md5:");
response.PutCStringAsRawHex8(md5_hash.c_str());
}
else{
response.PutCString ("uuid:");
response.PutCStringAsRawHex8(uuid_str.c_str());
}
response.PutChar(';');
const auto &module_arch = matched_module_spec.GetArchitecture();
response.PutCString("triple:");
response.PutCStringAsRawHex8( module_arch.GetTriple().getTriple().c_str());
response.PutChar(';');
response.PutCString("file_path:");
response.PutCStringAsRawHex8(module_path_spec.GetCString());
response.PutChar(';');
response.PutCString("file_offset:");
response.PutHex64(file_offset);
response.PutChar(';');
response.PutCString("file_size:");
response.PutHex64(file_size);
response.PutChar(';');
return SendPacketNoLock(response.GetData(), response.GetSize());
}
