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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ | 5 #ifndef WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ |
| 6 #define WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ | 6 #define WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ |
| 7 | 7 |
| 8 #include <map> | 8 #include <map> |
| 9 #include <set> | 9 #include <set> |
| 10 #include <string> | 10 #include <string> |
| (...skipping 30 matching lines...) Expand all Loading... |
| 41 public: | 41 public: |
| 42 class WEBKIT_STORAGE_EXPORT FileInfoSet { | 42 class WEBKIT_STORAGE_EXPORT FileInfoSet { |
| 43 public: | 43 public: |
| 44 FileInfoSet(); | 44 FileInfoSet(); |
| 45 ~FileInfoSet(); | 45 ~FileInfoSet(); |
| 46 | 46 |
| 47 // Add the given |path| to the set and populates |registered_name| with | 47 // Add the given |path| to the set and populates |registered_name| with |
| 48 // the registered name assigned for the path. |path| needs to be | 48 // the registered name assigned for the path. |path| needs to be |
| 49 // absolute and should not contain parent references. | 49 // absolute and should not contain parent references. |
| 50 // Return false if the |path| is not valid and could not be added. | 50 // Return false if the |path| is not valid and could not be added. |
| 51 bool AddPath(const FilePath& path, std::string* registered_name); | 51 bool AddPath(const base::FilePath& path, std::string* registered_name); |
| 52 | 52 |
| 53 // Add the given |path| with the |name|. | 53 // Add the given |path| with the |name|. |
| 54 // Return false if the |name| is already registered in the set or | 54 // Return false if the |name| is already registered in the set or |
| 55 // is not valid and could not be added. | 55 // is not valid and could not be added. |
| 56 bool AddPathWithName(const FilePath& path, const std::string& name); | 56 bool AddPathWithName(const base::FilePath& path, const std::string& name); |
| 57 | 57 |
| 58 const std::set<MountPointInfo>& fileset() const { return fileset_; } | 58 const std::set<MountPointInfo>& fileset() const { return fileset_; } |
| 59 | 59 |
| 60 private: | 60 private: |
| 61 std::set<MountPointInfo> fileset_; | 61 std::set<MountPointInfo> fileset_; |
| 62 }; | 62 }; |
| 63 | 63 |
| 64 // The instance is lazily created per browser process. | 64 // The instance is lazily created per browser process. |
| 65 static IsolatedContext* GetInstance(); | 65 static IsolatedContext* GetInstance(); |
| 66 | 66 |
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| 92 // absolute path is skipped and is not registered. | 92 // absolute path is skipped and is not registered. |
| 93 std::string RegisterDraggedFileSystem(const FileInfoSet& files); | 93 std::string RegisterDraggedFileSystem(const FileInfoSet& files); |
| 94 | 94 |
| 95 // Registers a new isolated filesystem for a given |path| of filesystem | 95 // Registers a new isolated filesystem for a given |path| of filesystem |
| 96 // |type| filesystem and returns a new filesystem ID. | 96 // |type| filesystem and returns a new filesystem ID. |
| 97 // |path| must be an absolute path which has no parent references ('..'). | 97 // |path| must be an absolute path which has no parent references ('..'). |
| 98 // If |register_name| is non-null and has non-empty string the path is | 98 // If |register_name| is non-null and has non-empty string the path is |
| 99 // registered as the given |register_name|, otherwise it is populated | 99 // registered as the given |register_name|, otherwise it is populated |
| 100 // with the name internally assigned to the path. | 100 // with the name internally assigned to the path. |
| 101 std::string RegisterFileSystemForPath(FileSystemType type, | 101 std::string RegisterFileSystemForPath(FileSystemType type, |
| 102 const FilePath& path, | 102 const base::FilePath& path, |
| 103 std::string* register_name); | 103 std::string* register_name); |
| 104 | 104 |
| 105 // Revokes all filesystem(s) registered for the given path. | 105 // Revokes all filesystem(s) registered for the given path. |
| 106 // This is assumed to be called when the registered path becomes | 106 // This is assumed to be called when the registered path becomes |
| 107 // globally invalid, e.g. when a device for the path is detached. | 107 // globally invalid, e.g. when a device for the path is detached. |
| 108 // | 108 // |
| 109 // Note that this revokes the filesystem no matter how many references it has. | 109 // Note that this revokes the filesystem no matter how many references it has. |
| 110 // It is ok to call this for the path that has no associated filesystems. | 110 // It is ok to call this for the path that has no associated filesystems. |
| 111 // Note that this only works for the filesystems registered by | 111 // Note that this only works for the filesystems registered by |
| 112 // |RegisterFileSystemForPath|. | 112 // |RegisterFileSystemForPath|. |
| 113 void RevokeFileSystemByPath(const FilePath& path); | 113 void RevokeFileSystemByPath(const base::FilePath& path); |
| 114 | 114 |
| 115 // Adds a reference to a filesystem specified by the given filesystem_id. | 115 // Adds a reference to a filesystem specified by the given filesystem_id. |
| 116 void AddReference(const std::string& filesystem_id); | 116 void AddReference(const std::string& filesystem_id); |
| 117 | 117 |
| 118 // Removes a reference to a filesystem specified by the given filesystem_id. | 118 // Removes a reference to a filesystem specified by the given filesystem_id. |
| 119 // If the reference count reaches 0 the isolated context gets destroyed. | 119 // If the reference count reaches 0 the isolated context gets destroyed. |
| 120 // It is OK to call this on the filesystem that has been already deleted | 120 // It is OK to call this on the filesystem that has been already deleted |
| 121 // (e.g. by RevokeFileSystemByPath). | 121 // (e.g. by RevokeFileSystemByPath). |
| 122 void RemoveReference(const std::string& filesystem_id); | 122 void RemoveReference(const std::string& filesystem_id); |
| 123 | 123 |
| 124 // Returns a set of dragged MountPointInfos registered for the | 124 // Returns a set of dragged MountPointInfos registered for the |
| 125 // |filesystem_id|. | 125 // |filesystem_id|. |
| 126 // The filesystem_id must be pointing to a dragged file system | 126 // The filesystem_id must be pointing to a dragged file system |
| 127 // (i.e. must be the one registered by RegisterDraggedFileSystem). | 127 // (i.e. must be the one registered by RegisterDraggedFileSystem). |
| 128 // Returns false if the |filesystem_id| is not valid. | 128 // Returns false if the |filesystem_id| is not valid. |
| 129 bool GetDraggedFileInfo(const std::string& filesystem_id, | 129 bool GetDraggedFileInfo(const std::string& filesystem_id, |
| 130 std::vector<MountPointInfo>* files) const; | 130 std::vector<MountPointInfo>* files) const; |
| 131 | 131 |
| 132 // MountPoints overrides. | 132 // MountPoints overrides. |
| 133 virtual bool HandlesFileSystemMountType(FileSystemType type) const OVERRIDE; | 133 virtual bool HandlesFileSystemMountType(FileSystemType type) const OVERRIDE; |
| 134 virtual bool RevokeFileSystem(const std::string& filesystem_id) OVERRIDE; | 134 virtual bool RevokeFileSystem(const std::string& filesystem_id) OVERRIDE; |
| 135 virtual bool GetRegisteredPath(const std::string& filesystem_id, | 135 virtual bool GetRegisteredPath(const std::string& filesystem_id, |
| 136 FilePath* path) const OVERRIDE; | 136 base::FilePath* path) const OVERRIDE; |
| 137 virtual bool CrackVirtualPath(const FilePath& virtual_path, | 137 virtual bool CrackVirtualPath(const base::FilePath& virtual_path, |
| 138 std::string* filesystem_id, | 138 std::string* filesystem_id, |
| 139 FileSystemType* type, | 139 FileSystemType* type, |
| 140 FilePath* path) const OVERRIDE; | 140 base::FilePath* path) const OVERRIDE; |
| 141 virtual FileSystemURL CrackURL(const GURL& url) const OVERRIDE; | 141 virtual FileSystemURL CrackURL(const GURL& url) const OVERRIDE; |
| 142 virtual FileSystemURL CreateCrackedFileSystemURL( | 142 virtual FileSystemURL CreateCrackedFileSystemURL( |
| 143 const GURL& origin, | 143 const GURL& origin, |
| 144 FileSystemType type, | 144 FileSystemType type, |
| 145 const FilePath& path) const OVERRIDE; | 145 const base::FilePath& path) const OVERRIDE; |
| 146 | 146 |
| 147 // Returns the virtual root path that looks like /<filesystem_id>. | 147 // Returns the virtual root path that looks like /<filesystem_id>. |
| 148 FilePath CreateVirtualRootPath(const std::string& filesystem_id) const; | 148 base::FilePath CreateVirtualRootPath(const std::string& filesystem_id) const; |
| 149 | 149 |
| 150 private: | 150 private: |
| 151 friend struct base::DefaultLazyInstanceTraits<IsolatedContext>; | 151 friend struct base::DefaultLazyInstanceTraits<IsolatedContext>; |
| 152 | 152 |
| 153 // Represents each file system instance (defined in the .cc). | 153 // Represents each file system instance (defined in the .cc). |
| 154 class Instance; | 154 class Instance; |
| 155 | 155 |
| 156 typedef std::map<std::string, Instance*> IDToInstance; | 156 typedef std::map<std::string, Instance*> IDToInstance; |
| 157 | 157 |
| 158 // Reverse map from registered path to IDs. | 158 // Reverse map from registered path to IDs. |
| 159 typedef std::map<FilePath, std::set<std::string> > PathToID; | 159 typedef std::map<base::FilePath, std::set<std::string> > PathToID; |
| 160 | 160 |
| 161 // Obtain an instance of this class via GetInstance(). | 161 // Obtain an instance of this class via GetInstance(). |
| 162 IsolatedContext(); | 162 IsolatedContext(); |
| 163 virtual ~IsolatedContext(); | 163 virtual ~IsolatedContext(); |
| 164 | 164 |
| 165 // Unregisters a file system of given |filesystem_id|. Must be called with | 165 // Unregisters a file system of given |filesystem_id|. Must be called with |
| 166 // lock_ held. Returns true if the file system is unregistered. | 166 // lock_ held. Returns true if the file system is unregistered. |
| 167 bool UnregisterFileSystem(const std::string& filesystem_id); | 167 bool UnregisterFileSystem(const std::string& filesystem_id); |
| 168 | 168 |
| 169 // Returns a new filesystem_id. Called with lock. | 169 // Returns a new filesystem_id. Called with lock. |
| 170 std::string GetNewFileSystemId() const; | 170 std::string GetNewFileSystemId() const; |
| 171 | 171 |
| 172 // This lock needs to be obtained when accessing the instance_map_. | 172 // This lock needs to be obtained when accessing the instance_map_. |
| 173 mutable base::Lock lock_; | 173 mutable base::Lock lock_; |
| 174 | 174 |
| 175 IDToInstance instance_map_; | 175 IDToInstance instance_map_; |
| 176 PathToID path_to_id_map_; | 176 PathToID path_to_id_map_; |
| 177 | 177 |
| 178 DISALLOW_COPY_AND_ASSIGN(IsolatedContext); | 178 DISALLOW_COPY_AND_ASSIGN(IsolatedContext); |
| 179 }; | 179 }; |
| 180 | 180 |
| 181 } // namespace fileapi | 181 } // namespace fileapi |
| 182 | 182 |
| 183 #endif // WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ | 183 #endif // WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ |
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