dom/cache/FileUtils.h
author James Teh <jteh@mozilla.com>
Thu, 07 Mar 2019 18:10:13 +0000
changeset 520910 c26d4a8d43c4d0d6f6e13135b8f35924123fe99e
parent 505383 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1527922: Ensure the Reload button is disabled when testing against blank tabs in the browser toolbar key nav tests. r=Gijs For a blank tab, the Reload button should be disabled. These tests depend on this. This seems to be true when setting the new tab page to blank in Firefox Options. However, when we open about:blank with BrowserTestUtils.withNewTab, this is unreliable. That is, sometimes the Reload button is enabled, sometimes it isn't. I don't understand why this happens. For the purposes of these tests, just force the Reload button to be disabled for new, blank tabs so we get consistent results. Differential Revision: https://phabricator.services.mozilla.com/D22449

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_cache_FileUtils_h
#define mozilla_dom_cache_FileUtils_h

#include "mozilla/Attributes.h"
#include "mozilla/dom/cache/Types.h"
#include "mozIStorageConnection.h"
#include "nsStreamUtils.h"
#include "nsTArrayForwardDeclare.h"

struct nsID;
class nsIFile;

namespace mozilla {
namespace dom {
namespace cache {

#define PADDING_FILE_NAME ".padding"
#define PADDING_TMP_FILE_NAME ".padding-tmp"

enum DirPaddingFile { FILE, TMP_FILE };

nsresult BodyCreateDir(nsIFile* aBaseDir);

// Note that this function can only be used during the initialization of the
// database.  We're unlikely to be able to delete the DB successfully past
// that point due to the file being in use.
nsresult BodyDeleteDir(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir);

nsresult BodyGetCacheDir(nsIFile* aBaseDir, const nsID& aId,
                         nsIFile** aCacheDirOut);

nsresult BodyStartWriteStream(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir,
                              nsIInputStream* aSource, void* aClosure,
                              nsAsyncCopyCallbackFun aCallback, nsID* aIdOut,
                              nsISupports** aCopyContextOut);

void BodyCancelWrite(nsIFile* aBaseDir, nsISupports* aCopyContext);

nsresult BodyFinalizeWrite(nsIFile* aBaseDir, const nsID& aId);

nsresult BodyOpen(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir,
                  const nsID& aId, nsIInputStream** aStreamOut);

nsresult BodyMaybeUpdatePaddingSize(const QuotaInfo& aQuotaInfo,
                                    nsIFile* aBaseDir, const nsID& aId,
                                    const uint32_t aPaddingInfo,
                                    int64_t* aPaddingSizeOut);

nsresult BodyDeleteFiles(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir,
                         const nsTArray<nsID>& aIdList);

nsresult BodyDeleteOrphanedFiles(const QuotaInfo& aQuotaInfo, nsIFile* aBaseDir,
                                 nsTArray<nsID>& aKnownBodyIdList);

nsresult CreateMarkerFile(const QuotaInfo& aQuotaInfo);

nsresult DeleteMarkerFile(const QuotaInfo& aQuotaInfo);

bool MarkerFileExists(const QuotaInfo& aQuotaInfo);

nsresult RemoveNsIFileRecursively(const QuotaInfo& aQuotaInfo, nsIFile* aFile);

nsresult RemoveNsIFile(const QuotaInfo& aQuotaInfo, nsIFile* aFile);

void DecreaseUsageForQuotaInfo(const QuotaInfo& aQuotaInfo,
                               const int64_t& aUpdatingSize);

/**
 * This function is used to check if the directory padding file is existed.
 */

bool DirectoryPaddingFileExists(nsIFile* aBaseDir,
                                DirPaddingFile aPaddingFileType);

/**
 *
 * The functions below are used to read/write/delete the directory padding file
 * after acquiring the mutex lock. The mutex lock is held by
 * CacheQuotaClient to prevent multi-thread accessing issue. To avoid deadlock,
 * these functions should only access by static functions in
 * dom/cache/QuotaClient.cpp.
 *
 */

nsresult LockedDirectoryPaddingGet(nsIFile* aBaseDir, int64_t* aPaddingSizeOut);

nsresult LockedDirectoryPaddingInit(nsIFile* aBaseDir);

nsresult LockedUpdateDirectoryPaddingFile(nsIFile* aBaseDir,
                                          mozIStorageConnection* aConn,
                                          const int64_t aIncreaseSize,
                                          const int64_t aDecreaseSize,
                                          const bool aTemporaryFileExist);

nsresult LockedDirectoryPaddingTemporaryWrite(nsIFile* aBaseDir,
                                              int64_t aPaddingSize);

nsresult LockedDirectoryPaddingFinalizeWrite(nsIFile* aBaseDir);

nsresult LockedDirectoryPaddingRestore(nsIFile* aBaseDir,
                                       mozIStorageConnection* aConn,
                                       bool aMustRestore,
                                       int64_t* aPaddingSizeOut);

nsresult LockedDirectoryPaddingDeleteFile(nsIFile* aBaseDir,
                                          DirPaddingFile aPaddingFileType);
}  // namespace cache
}  // namespace dom
}  // namespace mozilla

#endif  // mozilla_dom_cache_FileUtils_h