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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 LIBRARIES_NACL_MOUNTS_MOUNT_H_ | 5 #ifndef LIBRARIES_NACL_MOUNTS_MOUNT_H_ |
| 6 #define LIBRARIES_NACL_MOUNTS_MOUNT_H_ | 6 #define LIBRARIES_NACL_MOUNTS_MOUNT_H_ |
| 7 | 7 |
| 8 #include <stdint.h> | |
| 9 #include <map> | 8 #include <map> |
| 10 #include <string> | 9 #include <string> |
| 11 | 10 |
| 12 #include "macros.h" | |
| 13 #include "ref_object.h" | |
| 14 | |
| 15 #include "nacl_mounts/mount_node.h" | 11 #include "nacl_mounts/mount_node.h" |
| 16 #include "nacl_mounts/path.h" | 12 #include "nacl_mounts/path.h" |
| 17 | 13 #include "utils/macros.h" |
| 18 struct dirent; | 14 #include "utils/ref_object.h" |
| 19 struct stat; | |
| 20 | 15 |
| 21 class MountNode; | 16 class MountNode; |
| 22 class MountManager; | 17 class MountManager; |
| 23 | 18 |
| 24 typedef std::map<std::string, std::string> StringMap_t; | 19 typedef std::map<std::string, std::string> StringMap_t; |
| 25 | 20 |
| 26 template<class C, class P> class MountFactory : public P { | |
| 27 protected: | |
| 28 MountFactory() | |
| 29 : P() {} | |
| 30 | |
| 31 static Mount* Create(int dev, StringMap_t& args) { | |
| 32 Mount* mnt = new C(); | |
| 33 if (mnt->Init(dev, args) == false) { | |
| 34 delete mnt; | |
| 35 return NULL; | |
| 36 } | |
| 37 return mnt; | |
| 38 } | |
| 39 | |
| 40 friend class KernelProxy; | |
| 41 }; | |
| 42 | |
| 43 | |
| 44 | 21 |
| 45 // Mount serves as the base mounting class that will be used by | 22 // Mount serves as the base mounting class that will be used by |
| 46 // the mount manager (class MountManager). The mount manager | 23 // the mount manager (class MountManager). The mount manager |
| 47 // relies heavily on the GetNode method as a way of directing | 24 // relies heavily on the GetNode method as a way of directing |
| 48 // system calls that take a path as an argument. The methods | 25 // system calls that take a path as an argument. The methods |
| 49 // of this class are pure virtual. BaseMount class contains | 26 // of this class are pure virtual. BaseMount class contains |
| 50 // stub implementations for these methods. Feel free to use | 27 // stub implementations for these methods. Feel free to use |
| 51 // BaseMount if your mount does not implement all of these | 28 // BaseMount if your mount does not implement all of these |
| 52 // operations. | 29 // operations. |
| 53 class Mount : public RefObject { | 30 class Mount : public RefObject { |
| (...skipping 28 matching lines...) Expand all Loading... | |
| 82 virtual int Rmdir(const Path& path) = 0; | 59 virtual int Rmdir(const Path& path) = 0; |
| 83 | 60 |
| 84 // Convert from R,W,R/W open flags to STAT permission flags | 61 // Convert from R,W,R/W open flags to STAT permission flags |
| 85 static int OpenModeToPermission(int mode); | 62 static int OpenModeToPermission(int mode); |
| 86 | 63 |
| 87 protected: | 64 protected: |
| 88 // Device number for the mount. | 65 // Device number for the mount. |
| 89 int dev_; | 66 int dev_; |
| 90 | 67 |
| 91 private: | 68 private: |
| 92 // May only be called by the KernelProxy when the Kernel's | 69 // May only be called by the KernelProxy when the Kernel's |
| 93 // lock is held, so we make it private. | 70 // lock is held, so we make it private. |
| 94 friend class KernelObject; | 71 friend class KernelObject; |
| 95 friend class KernelProxy; | 72 friend class KernelProxy; |
| 96 void Acquire() { RefObject::Acquire(); } | 73 void Acquire() { RefObject::Acquire(); } |
| 97 bool Release() { return RefObject::Release(); } | 74 void Release() { RefObject::Release(); } |
| 98 | 75 |
| 99 template <class M, class P> friend class MountFactory; | 76 template <class M, class P> friend class MountFactory; |
| 100 DISALLOW_COPY_AND_ASSIGN(Mount); | 77 DISALLOW_COPY_AND_ASSIGN(Mount); |
| 101 }; | 78 }; |
| 102 | 79 |
| 103 | 80 |
| 81 template<class C, class P> class MountFactory : public P { | |
| 82 protected: | |
| 83 MountFactory() | |
| 84 : P() {} | |
| 85 | |
| 86 static Mount* Create(int dev, StringMap_t& args) { | |
| 87 Mount* mnt = new C(); | |
|
binji
2012/07/26 22:49:58
gcc complained that Mount was used before it was d
| |
| 88 if (mnt->Init(dev, args) == false) { | |
| 89 delete mnt; | |
| 90 return NULL; | |
| 91 } | |
| 92 return mnt; | |
| 93 } | |
| 94 | |
| 95 friend class KernelProxy; | |
| 96 }; | |
| 97 | |
| 104 #endif // LIBRARIES_NACL_MOUNTS_MOUNT_H_ | 98 #endif // LIBRARIES_NACL_MOUNTS_MOUNT_H_ |
| 105 | |
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