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- // 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 <fcntl.h>
- #include <fuchsia/io/cpp/fidl.h>
- #include <lib/fdio/directory.h>
- #include <lib/fdio/io.h>
- #include <lib/zx/vmo.h>
- #include <stdio.h>
- #include <zircon/dlfcn.h>
- #include <zircon/status.h>
- #include <zircon/syscalls.h>
- #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<base::FilePath::StringType> 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<uint32_t>(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
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