2012-07-16 16:38:18 +00:00
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsVolumeService.h"
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#include "Volume.h"
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#include "VolumeManager.h"
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#include "VolumeServiceIOThread.h"
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsDependentSubstring.h"
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2012-12-15 00:01:34 +00:00
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#include "nsIDOMWakeLockListener.h"
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2012-07-16 16:38:18 +00:00
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#include "nsIObserver.h"
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#include "nsIObserverService.h"
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2012-12-15 00:01:34 +00:00
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#include "nsIPowerManagerService.h"
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2012-07-16 16:38:18 +00:00
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#include "nsISupportsUtils.h"
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#include "nsIVolume.h"
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#include "nsIVolumeService.h"
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#include "nsLocalFile.h"
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#include "nsServiceManagerUtils.h"
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#include "nsString.h"
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#include "nsTArray.h"
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#include "nsThreadUtils.h"
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2012-12-15 00:01:34 +00:00
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#include "nsVolumeMountLock.h"
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2012-07-16 16:38:18 +00:00
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#include "nsXULAppAPI.h"
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2012-12-15 00:01:34 +00:00
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#include "mozilla/dom/ContentChild.h"
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2012-07-16 16:38:18 +00:00
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#include "mozilla/Services.h"
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#define VOLUME_MANAGER_LOG_TAG "nsVolumeService"
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#include "VolumeManagerLog.h"
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#include <stdlib.h>
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2012-12-15 00:01:34 +00:00
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using namespace mozilla::dom;
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2012-07-16 16:38:18 +00:00
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using namespace mozilla::services;
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namespace mozilla {
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namespace system {
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2013-01-11 04:29:51 +00:00
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NS_IMPL_THREADSAFE_ISUPPORTS2(nsVolumeService,
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nsIVolumeService,
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nsIDOMMozWakeLockListener)
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2012-12-15 00:01:34 +00:00
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StaticRefPtr<nsVolumeService> nsVolumeService::sSingleton;
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// static
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already_AddRefed<nsVolumeService>
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nsVolumeService::GetSingleton()
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (!sSingleton) {
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sSingleton = new nsVolumeService();
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}
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NS_ADDREF(sSingleton.get());
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return sSingleton.get();
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}
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// static
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void
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nsVolumeService::Shutdown()
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{
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if (!sSingleton || (XRE_GetProcessType() != GeckoProcessType_Default)) {
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return;
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}
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nsCOMPtr<nsIPowerManagerService> pmService =
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do_GetService(POWERMANAGERSERVICE_CONTRACTID);
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if (pmService) {
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pmService->RemoveWakeLockListener(sSingleton.get());
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}
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XRE_GetIOMessageLoop()->PostTask(
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FROM_HERE,
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NewRunnableFunction(ShutdownVolumeServiceIOThread));
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sSingleton = nullptr;
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}
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2012-07-16 16:38:18 +00:00
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nsVolumeService::nsVolumeService()
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{
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2012-12-15 00:01:34 +00:00
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sSingleton = this;
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if (XRE_GetProcessType() != GeckoProcessType_Default) {
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// We don't support the nsIVolumeService in the child processes,
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// but we get constructed due to the way we're registered with
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// nsLayoutModule.cpp. So we exit early to reduce our memory
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// impact, and so that we don't start unnecessary IOThread stuff.
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return;
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}
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2012-07-16 16:38:18 +00:00
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// Startup the IOThread side of things. The actual volume changes
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// are captured by the IOThread and forwarded to main thread.
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XRE_GetIOMessageLoop()->PostTask(
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FROM_HERE,
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2012-12-15 00:01:34 +00:00
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NewRunnableFunction(InitVolumeServiceIOThread, this));
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nsCOMPtr<nsIPowerManagerService> pmService =
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do_GetService(POWERMANAGERSERVICE_CONTRACTID);
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if (!pmService) {
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return;
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}
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pmService->AddWakeLockListener(this);
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2012-07-16 16:38:18 +00:00
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}
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nsVolumeService::~nsVolumeService()
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{
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}
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2012-12-15 00:01:34 +00:00
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// Callback for nsIDOMMozWakeLockListener
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2013-01-07 16:43:02 +00:00
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NS_IMETHODIMP nsVolumeService::Callback(const nsAString& aTopic, const nsAString& aState)
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2012-12-15 00:01:34 +00:00
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{
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CheckMountLock(aTopic, aState);
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return NS_OK;
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}
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2013-01-07 16:43:02 +00:00
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NS_IMETHODIMP nsVolumeService::BroadcastVolume(const nsAString& aVolName)
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2012-12-15 00:01:34 +00:00
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{
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MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
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nsRefPtr<nsVolume> vol = FindVolumeByName(aVolName);
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if (!vol) {
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ERR("BroadcastVolume: Unable to locate volume '%s'",
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NS_LossyConvertUTF16toASCII(aVolName).get());
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return NS_ERROR_NOT_AVAILABLE;
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}
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nsCOMPtr<nsIObserverService> obs = GetObserverService();
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NS_ENSURE_TRUE(obs, NS_NOINTERFACE);
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2013-01-28 22:34:30 +00:00
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DBG("nsVolumeService::BroadcastVolume for '%s'", vol->NameStr().get());
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2012-12-15 00:01:34 +00:00
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nsString stateStr(NS_ConvertUTF8toUTF16(vol->StateStr()));
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obs->NotifyObservers(vol, NS_VOLUME_STATE_CHANGED, stateStr.get());
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return NS_OK;
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}
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2013-01-07 16:43:02 +00:00
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NS_IMETHODIMP nsVolumeService::GetVolumeByName(const nsAString& aVolName, nsIVolume **aResult)
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2012-07-16 16:38:18 +00:00
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{
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2012-08-06 21:32:29 +00:00
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MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
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2012-07-16 16:38:18 +00:00
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nsRefPtr<nsVolume> vol = FindVolumeByName(aVolName);
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if (!vol) {
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2012-08-06 21:32:29 +00:00
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ERR("GetVolumeByName: Unable to locate volume '%s'",
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NS_LossyConvertUTF16toASCII(aVolName).get());
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2012-07-16 16:38:18 +00:00
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return NS_ERROR_NOT_AVAILABLE;
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}
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NS_ADDREF(*aResult = vol);
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return NS_OK;
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}
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2013-01-07 16:43:02 +00:00
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NS_IMETHODIMP nsVolumeService::GetVolumeByPath(const nsAString& aPath, nsIVolume **aResult)
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2012-07-16 16:38:18 +00:00
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{
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2012-08-06 21:32:29 +00:00
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MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
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2012-07-16 16:38:18 +00:00
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nsCString utf8Path = NS_ConvertUTF16toUTF8(aPath);
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char realPathBuf[PATH_MAX];
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if (!realpath(utf8Path.get(), realPathBuf)) {
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2012-08-06 21:32:29 +00:00
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ERR("GetVolumeByPath: realpath on '%s' failed: %d", utf8Path.get(), errno);
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2012-07-16 16:38:18 +00:00
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return NSRESULT_FOR_ERRNO();
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}
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// The volume mount point is always a directory. Something like /mnt/sdcard
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// Once we have a full qualified pathname with symlinks removed (which is
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// what realpath does), we basically check if aPath starts with the mount
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// point, but we don't want to have /mnt/sdcard match /mnt/sdcardfoo but we
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// do want it to match /mnt/sdcard/foo
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// So we add a trailing slash to the mount point and the pathname passed in
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// prior to doing the comparison.
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strlcat(realPathBuf, "/", sizeof(realPathBuf));
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nsVolume::Array::size_type numVolumes = mVolumeArray.Length();
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nsVolume::Array::index_type volIndex;
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for (volIndex = 0; volIndex < numVolumes; volIndex++) {
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nsRefPtr<nsVolume> vol = mVolumeArray[volIndex];
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2012-09-02 02:35:17 +00:00
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nsAutoCString volMountPointSlash = NS_ConvertUTF16toUTF8(vol->MountPoint());
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2012-07-16 16:38:18 +00:00
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volMountPointSlash.Append(NS_LITERAL_CSTRING("/"));
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nsDependentCSubstring testStr(realPathBuf, volMountPointSlash.Length());
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if (volMountPointSlash.Equals(testStr)) {
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NS_ADDREF(*aResult = vol);
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return NS_OK;
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}
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}
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2012-12-06 17:31:57 +00:00
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// In order to support queries by DeviceStorage and the updater, we will fabricate
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// a volume from the pathname, so that the caller can determine the volume size
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nsRefPtr<nsVolume> vol = new nsVolume(NS_LITERAL_STRING("fake"),
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2012-12-15 00:01:34 +00:00
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aPath, nsIVolume::STATE_MOUNTED,
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-1 /*generation*/);
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2012-12-06 17:31:57 +00:00
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NS_ADDREF(*aResult = vol);
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return NS_OK;
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2012-07-16 16:38:18 +00:00
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}
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2013-01-07 16:43:02 +00:00
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NS_IMETHODIMP nsVolumeService::CreateMountLock(const nsAString& aVolumeName, nsIVolumeMountLock **aResult)
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2012-12-15 00:01:34 +00:00
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{
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nsRefPtr<nsVolumeMountLock> mountLock = nsVolumeMountLock::Create(aVolumeName);
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if (!mountLock) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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NS_ADDREF(*aResult = mountLock);
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return NS_OK;
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}
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2013-01-07 16:43:02 +00:00
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void nsVolumeService::CheckMountLock(const nsAString& aMountLockName,
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const nsAString& aMountLockState)
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2012-12-15 00:01:34 +00:00
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{
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MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
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MOZ_ASSERT(NS_IsMainThread());
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nsVolume::Array::size_type numVolumes = mVolumeArray.Length();
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nsVolume::Array::index_type volIndex;
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for (volIndex = 0; volIndex < numVolumes; volIndex++) {
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nsRefPtr<nsVolume> vol = mVolumeArray[volIndex];
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nsString mountLockName;
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vol->GetMountLockName(mountLockName);
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if (mountLockName.Equals(aMountLockName)) {
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vol->UpdateMountLock(aMountLockState);
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return;
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}
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}
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}
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2013-01-07 16:43:02 +00:00
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already_AddRefed<nsVolume> nsVolumeService::FindVolumeByName(const nsAString& aName)
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2012-07-16 16:38:18 +00:00
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{
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2012-08-06 21:32:29 +00:00
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MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
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2012-07-16 16:38:18 +00:00
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MOZ_ASSERT(NS_IsMainThread());
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nsVolume::Array::size_type numVolumes = mVolumeArray.Length();
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nsVolume::Array::index_type volIndex;
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for (volIndex = 0; volIndex < numVolumes; volIndex++) {
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nsRefPtr<nsVolume> vol = mVolumeArray[volIndex];
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if (vol->Name().Equals(aName)) {
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return vol.forget();
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}
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}
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return NULL;
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}
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2012-12-15 00:01:34 +00:00
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//static
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2013-01-07 16:43:02 +00:00
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already_AddRefed<nsVolume> nsVolumeService::FindAddVolumeByName(const nsAString& aName)
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2012-07-16 16:38:18 +00:00
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{
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2012-08-06 21:32:29 +00:00
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MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
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2012-07-16 16:38:18 +00:00
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MOZ_ASSERT(NS_IsMainThread());
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nsRefPtr<nsVolume> vol;
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vol = FindVolumeByName(aName);
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if (vol) {
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return vol.forget();
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}
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// Volume not found - add a new one
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vol = new nsVolume(aName);
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mVolumeArray.AppendElement(vol);
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return vol.forget();
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}
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2013-01-07 16:43:02 +00:00
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void nsVolumeService::UpdateVolume(const nsVolume* aVolume)
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2012-07-16 16:38:18 +00:00
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{
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2012-08-06 21:32:29 +00:00
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MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
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2012-07-16 16:38:18 +00:00
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MOZ_ASSERT(NS_IsMainThread());
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nsRefPtr<nsVolume> vol = FindAddVolumeByName(aVolume->Name());
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if (vol->Equals(aVolume)) {
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// Nothing has really changed. Don't bother telling anybody.
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return;
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}
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vol->Set(aVolume);
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2012-08-03 00:28:59 +00:00
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nsCOMPtr<nsIObserverService> obs = GetObserverService();
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2012-07-16 16:38:18 +00:00
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if (!obs) {
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return;
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}
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nsString stateStr(NS_ConvertUTF8toUTF16(vol->StateStr()));
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obs->NotifyObservers(vol, NS_VOLUME_STATE_CHANGED, stateStr.get());
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}
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/***************************************************************************
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* The UpdateVolumeRunnable creates an nsVolume and updates the main thread
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* data structure while running on the main thread.
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*/
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class UpdateVolumeRunnable : public nsRunnable
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{
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public:
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2013-01-07 16:43:02 +00:00
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UpdateVolumeRunnable(nsVolumeService* aVolumeService, const Volume* aVolume)
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2012-12-15 00:01:34 +00:00
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: mVolumeService(aVolumeService),
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mVolume(new nsVolume(aVolume))
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2012-07-16 16:38:18 +00:00
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{
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MOZ_ASSERT(MessageLoop::current() == XRE_GetIOMessageLoop());
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}
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NS_IMETHOD Run()
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{
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MOZ_ASSERT(NS_IsMainThread());
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2012-12-15 00:01:34 +00:00
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DBG("UpdateVolumeRunnable::Run '%s' state %s gen %d locked %d",
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2013-01-28 22:34:30 +00:00
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mVolume->NameStr().get(), mVolume->StateStr(),
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mVolume->MountGeneration(), (int)mVolume->IsMountLocked());
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2012-07-16 16:38:18 +00:00
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2012-12-15 00:01:34 +00:00
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mVolumeService->UpdateVolume(mVolume);
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mVolumeService = NULL;
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2012-07-16 16:38:18 +00:00
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mVolume = NULL;
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return NS_OK;
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}
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private:
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2012-12-15 00:01:34 +00:00
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nsRefPtr<nsVolumeService> mVolumeService;
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nsRefPtr<nsVolume> mVolume;
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2012-07-16 16:38:18 +00:00
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};
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2013-01-07 16:43:02 +00:00
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void nsVolumeService::UpdateVolumeIOThread(const Volume* aVolume)
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2012-07-16 16:38:18 +00:00
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{
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2012-12-15 00:01:34 +00:00
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DBG("UpdateVolumeIOThread: Volume '%s' state %s mount '%s' gen %d locked %d",
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aVolume->NameStr(), aVolume->StateStr(), aVolume->MountPoint().get(),
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aVolume->MountGeneration(), (int)aVolume->IsMountLocked());
|
2012-07-16 16:38:18 +00:00
|
|
|
MOZ_ASSERT(MessageLoop::current() == XRE_GetIOMessageLoop());
|
2012-12-15 00:01:34 +00:00
|
|
|
NS_DispatchToMainThread(new UpdateVolumeRunnable(this, aVolume));
|
2012-07-16 16:38:18 +00:00
|
|
|
}
|
|
|
|
|
2012-12-15 00:01:34 +00:00
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|
|
} // namespace system
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|
|
|
} // namespace mozilla
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