| // Copyright 2013 The Flutter 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 "tempfs.h" |
| |
| #include <string_view> |
| |
| #include <zircon/errors.h> |
| #include <zircon/status.h> |
| #include <zircon/syscalls.h> |
| |
| #include "flutter/fml/logging.h" |
| |
| namespace { |
| |
| constexpr char kTmpPath[] = "/tmp"; |
| |
| } // namespace |
| |
| namespace dart_utils { |
| |
| void BindTemp(fdio_ns_t* ns) { |
| // TODO(zra): Should isolates share a /tmp file system within a process, or |
| // should isolates each get their own private file system for /tmp? For now, |
| // sharing the process-wide /tmp simplifies hot reload since the hot reload |
| // devfs requires sharing between the service isolate and the app isolates. |
| fdio_flat_namespace_t* rootns; |
| if (zx_status_t status = fdio_ns_export_root(&rootns); status != ZX_OK) { |
| FML_LOG(ERROR) << "Failed to export root ns: " |
| << zx_status_get_string(status); |
| return; |
| } |
| |
| zx_handle_t tmp_dir_handle; |
| for (size_t i = 0; i < rootns->count; i++) { |
| if (std::string_view{rootns->path[i]} == kTmpPath) { |
| tmp_dir_handle = std::exchange(rootns->handle[i], ZX_HANDLE_INVALID); |
| } |
| } |
| fdio_ns_free_flat_ns(rootns); |
| |
| if (zx_status_t status = fdio_ns_bind(ns, kTmpPath, tmp_dir_handle); |
| status != ZX_OK) { |
| zx_handle_close(tmp_dir_handle); |
| FML_LOG(ERROR) << "Failed to bind /tmp directory into isolate namespace: " |
| << zx_status_get_string(status); |
| } |
| } |
| |
| } // namespace dart_utils |
