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| 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 | |
| 3 * found in the LICENSE file. | |
| 4 */ | |
| 5 #ifndef LIBRARIES_NACL_MOUNTS_MOUNT_MEM_H_ | |
| 6 #define LIBRARIES_NACL_MOUNTS_MOUNT_MEM_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 #include <string> | |
| 10 | |
| 11 #include "nacl_mounts/mount.h" | |
| 12 | |
| 13 class MountMem : public Mount { | |
| 14 protected: | |
| 15 MountMem(); | |
| 16 | |
| 17 virtual bool Init(int dev, StringMap_t& args, PepperInterface* ppapi); | |
| 18 virtual void Destroy(); | |
| 19 | |
| 20 // The protected functions are only used internally and will not | |
| 21 // acquire or release the mount's lock themselves. The caller is | |
| 22 // required to use correct locking as needed. | |
| 23 MountNode *AllocateData(int mode); | |
| 24 MountNode *AllocatePath(int mode); | |
| 25 | |
| 26 // Allocate or free an INODE number. | |
| 27 int AllocateINO(); | |
| 28 void FreeINO(int ino); | |
| 29 | |
| 30 // Find a Node specified node optionally failing if type does not match. | |
| 31 virtual MountNode* FindNode(const Path& path, int type = 0); | |
| 32 | |
| 33 public: | |
| 34 virtual MountNode *Open(const Path& path, int mode); | |
| 35 virtual int Unlink(const Path& path); | |
| 36 virtual int Mkdir(const Path& path, int perm); | |
| 37 virtual int Rmdir(const Path& path); | |
| 38 virtual int Remove(const Path& path); | |
| 39 | |
| 40 private: | |
| 41 static const int REMOVE_DIR = 1; | |
| 42 static const int REMOVE_FILE = 2; | |
| 43 static const int REMOVE_ALL = REMOVE_DIR | REMOVE_FILE; | |
| 44 | |
| 45 int RemoveInternal(const Path& path, int remove_type); | |
| 46 | |
| 47 MountNode* root_; | |
| 48 size_t max_ino_; | |
| 49 | |
| 50 friend class Mount; | |
| 51 DISALLOW_COPY_AND_ASSIGN(MountMem); | |
| 52 }; | |
| 53 | |
| 54 #endif // LIBRARIES_NACL_MOUNTS_MOUNT_MEM_H_ | |
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