// Copyright 2018 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "base/native_library.h" #include #include #include #include #include #include #include #include #include #include "base/base_paths.h" #include "base/files/file.h" #include "base/files/file_path.h" #include "base/fuchsia/fuchsia_logging.h" #include "base/notreached.h" #include "base/path_service.h" #include "base/posix/safe_strerror.h" #include "base/strings/strcat.h" #include "base/strings/string_piece.h" #include "base/strings/stringprintf.h" #include "base/strings/utf_string_conversions.h" #include "base/threading/thread_restrictions.h" #include "base_paths.h" namespace base { std::string NativeLibraryLoadError::ToString() const { return message; } NativeLibrary LoadNativeLibraryWithOptions(const FilePath& library_path, const NativeLibraryOptions& options, NativeLibraryLoadError* error) { std::vector components = library_path.GetComponents(); if (components.size() != 1u) { NOTREACHED() << "library_path is a path, should be a filename: " << library_path.MaybeAsASCII(); return nullptr; } FilePath computed_path; base::PathService::Get(DIR_ASSETS, &computed_path); computed_path = computed_path.AppendASCII("lib").Append(components[0]); // Use fdio_open_fd (a Fuchsia-specific API) here so we can pass the // appropriate FS rights flags to request executability. // TODO(crbug.com/1018538): Teach base::File about FLAG_WIN_EXECUTE on // Fuchsia, and then use it here instead of using fdio_open_fd() directly. base::ScopedFD fd; zx_status_t status = fdio_open_fd( computed_path.value().c_str(), static_cast(fuchsia::io::OpenFlags::RIGHT_READABLE | fuchsia::io::OpenFlags::RIGHT_EXECUTABLE), base::ScopedFD::Receiver(fd).get()); if (status != ZX_OK) { if (error) { error->message = base::StringPrintf("fdio_open_fd: %s", zx_status_get_string(status)); } return nullptr; } zx::vmo vmo; status = fdio_get_vmo_exec(fd.get(), vmo.reset_and_get_address()); if (status != ZX_OK) { if (error) { error->message = base::StringPrintf("fdio_get_vmo_exec: %s", zx_status_get_string(status)); } return nullptr; } NativeLibrary result = dlopen_vmo(vmo.get(), RTLD_LAZY | RTLD_LOCAL); return result; } void UnloadNativeLibrary(NativeLibrary library) { // dlclose() is a no-op on Fuchsia, so do nothing here. } void* GetFunctionPointerFromNativeLibrary(NativeLibrary library, StringPiece name) { return dlsym(library, name.data()); } std::string GetNativeLibraryName(StringPiece name) { return StrCat({"lib", name, ".so"}); } std::string GetLoadableModuleName(StringPiece name) { return GetNativeLibraryName(name); } } // namespace base