Change access mode of disk devices when mounting based on config.

chrome/browser/chromeos/file_manager/volume_manager_unittest.cc

 // Copyright 2013 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 "chrome/browser/chromeos/file_manager/volume_manager.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 419 matching lines @@
   const chromeos::disks::DiskMountManager::Disk kDisk(
       "device1", "", "", "", "", "", "", "", "", "", "", "",
       chromeos::DEVICE_TYPE_UNKNOWN, 0, false, false, true, false, false,
       false);
   volume_manager()->OnDiskEvent(
       chromeos::disks::DiskMountManager::DISK_CHANGED, &kDisk);
 
   EXPECT_EQ(1U, observer.events().size());
   EXPECT_EQ(1U, disk_mount_manager_->mount_requests().size());
   EXPECT_EQ(0U, disk_mount_manager_->unmount_requests().size());
+  // Read-write mode by default.
+  EXPECT_FALSE(disk_mount_manager_->mount_requests()[0].read_only);
 
   volume_manager()->RemoveObserver(&observer);
 }
+
+TEST_F(VolumeManagerTest, OnDiskEvent_ChangedInReadonly) {
+  profile()->GetPrefs()->SetBoolean(prefs::kExternalStorageReadOnly, true);
+
+  // Changed event should cause mounting (if possible).
+  LoggingObserver observer;
+  volume_manager()->AddObserver(&observer);
+
+  const chromeos::disks::DiskMountManager::Disk kDisk(
+      "device1", "", "", "", "", "", "", "", "", "", "", "",
+      chromeos::DEVICE_TYPE_UNKNOWN, 0, false, false, true, false, false,
+      false);
+  volume_manager()->OnDiskEvent(chromeos::disks::DiskMountManager::DISK_CHANGED,
+                                &kDisk);
+
+  EXPECT_EQ(1U, observer.events().size());
+  EXPECT_EQ(1U, disk_mount_manager_->mount_requests().size());
+  EXPECT_EQ(0U, disk_mount_manager_->unmount_requests().size());
+  // Shoule mount a disk in read-only mode.
+  EXPECT_TRUE(disk_mount_manager_->mount_requests()[0].read_only);
+
+  volume_manager()->RemoveObserver(&observer);
+}
 
 TEST_F(VolumeManagerTest, OnDeviceEvent_Added) {
   LoggingObserver observer;
   volume_manager()->AddObserver(&observer);
 
   volume_manager()->OnDeviceEvent(
       chromeos::disks::DiskMountManager::DEVICE_ADDED, "device1");
 
   ASSERT_EQ(1U, observer.events().size());
   const LoggingObserver::Event& event = observer.events()[0];
@@ skipping 64 matching lines @@
   volume_manager()->RemoveObserver(&observer);
 }
 
 TEST_F(VolumeManagerTest, OnMountEvent_Remounting) {
   std::unique_ptr<chromeos::disks::DiskMountManager::Disk> disk(
       new chromeos::disks::DiskMountManager::Disk(
           "device1", "", "", "", "", "", "", "", "", "", "uuid1", "",
           chromeos::DEVICE_TYPE_UNKNOWN, 0, false, false, false, false, false,
           false));
   disk_mount_manager_->AddDiskForTest(disk.release());
-  disk_mount_manager_->MountPath(
-      "device1", "", "", chromeos::MOUNT_TYPE_DEVICE);
+  disk_mount_manager_->MountPath("device1", "", "", chromeos::MOUNT_TYPE_DEVICE,
+                                 chromeos::MOUNT_ACCESS_MODE_READ_WRITE);
 
   const chromeos::disks::DiskMountManager::MountPointInfo kMountPoint(
       "device1",
       "mount1",
       chromeos::MOUNT_TYPE_DEVICE,
       chromeos::disks::MOUNT_CONDITION_NONE);
 
   volume_manager()->OnMountEvent(
       chromeos::disks::DiskMountManager::MOUNTING,
       chromeos::MOUNT_ERROR_NONE,
@@ skipping 128 matching lines @@
   EXPECT_EQ("device1", event.device_path);
   EXPECT_FALSE(event.success);
 
   EXPECT_EQ(0U, disk_mount_manager_->mount_requests().size());
 
   volume_manager()->RemoveObserver(&observer);
 }
 
 TEST_F(VolumeManagerTest, OnExternalStorageDisabledChanged) {
   // Here create two mount points.
-  disk_mount_manager_->MountPath(
-      "mount1", "", "", chromeos::MOUNT_TYPE_DEVICE);
-  disk_mount_manager_->MountPath(
-      "mount2", "", "", chromeos::MOUNT_TYPE_DEVICE);
+  disk_mount_manager_->MountPath("mount1", "", "", chromeos::MOUNT_TYPE_DEVICE,
+                                 chromeos::MOUNT_ACCESS_MODE_READ_WRITE);
+  disk_mount_manager_->MountPath("mount2", "", "", chromeos::MOUNT_TYPE_DEVICE,
+                                 chromeos::MOUNT_ACCESS_MODE_READ_ONLY);
 
   // Initially, there are two mount points.
   ASSERT_EQ(2U, disk_mount_manager_->mount_points().size());
   ASSERT_EQ(0U, disk_mount_manager_->unmount_requests().size());
 
   // Emulate to set kExternalStorageDisabled to false.
   profile()->GetPrefs()->SetBoolean(prefs::kExternalStorageDisabled, false);
   volume_manager()->OnExternalStorageDisabledChanged();
 
   // Expect no effects.
@@ skipping 182 matching lines @@
   // Detach
   volume_manager()->OnRemovableStorageDetached(info);
   ASSERT_EQ(2u, observer.events().size());
   EXPECT_EQ(LoggingObserver::Event::VOLUME_UNMOUNTED,
             observer.events()[1].type);
 
   EXPECT_FALSE(volume.get());
 }
 
 }  // namespace file_manager