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FileSystemHandle.h
1 /* mbed Microcontroller Library
2  * Copyright (c) 2006-2013 ARM Limited
3  * SPDX-License-Identifier: Apache-2.0
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 #ifndef MBED_FILESYSTEMHANDLE_H
18 #define MBED_FILESYSTEMHANDLE_H
19 
20 #include "platform/platform.h"
21 
22 #include "platform/FileBase.h"
23 #include "platform/FileHandle.h"
24 #include "platform/DirHandle.h"
25 #include "platform/NonCopyable.h"
26 
27 namespace mbed {
28 /** \addtogroup platform */
29 /** @{*/
30 /**
31  * \defgroup platform_FileSystemHandle FileSystemHandle functions
32  * @{
33  */
34 
35 
36 /** A filesystem-like object is one that can be used to open file-like
37  * objects though it by fopen("/name/filename", mode)
38  *
39  * Implementations must define at least open (the default definitions
40  * of the rest of the functions just return error values).
41  *
42  * @note Synchronization level: Set by subclass
43  */
44 class FileSystemHandle : private NonCopyable<FileSystemHandle> {
45 public:
46  /** FileSystemHandle lifetime
47  */
48  virtual ~FileSystemHandle() {}
49 
50  /** Open a file on the filesystem
51  *
52  * @param file Destination for the handle to a newly created file
53  * @param filename The name of the file to open
54  * @param flags The flags to open the file in, one of O_RDONLY, O_WRONLY, O_RDWR,
55  * bitwise or'd with one of O_CREAT, O_TRUNC, O_APPEND
56  * @return 0 on success, negative error code on failure
57  */
58  virtual int open(FileHandle **file, const char *filename, int flags) = 0;
59 
60  /** Open a directory on the filesystem
61  *
62  * @param dir Destination for the handle to the directory
63  * @param path Name of the directory to open
64  * @return 0 on success, negative error code on failure
65  */
66  virtual int open(DirHandle **dir, const char *path);
67 
68  /** Remove a file from the filesystem.
69  *
70  * @param path The name of the file to remove.
71  * @return 0 on success, negative error code on failure
72  */
73  virtual int remove(const char *path);
74 
75  /** Rename a file in the filesystem.
76  *
77  * @param path The name of the file to rename.
78  * @param newpath The name to rename it to
79  * @return 0 on success, negative error code on failure
80  */
81  virtual int rename(const char *path, const char *newpath);
82 
83  /** Store information about the file in a stat structure
84  *
85  * @param path The name of the file to find information about
86  * @param st The stat buffer to write to
87  * @return 0 on success, negative error code on failure
88  */
89  virtual int stat(const char *path, struct stat *st);
90 
91  /** Create a directory in the filesystem.
92  *
93  * @param path The name of the directory to create.
94  * @param mode The permissions with which to create the directory
95  * @return 0 on success, negative error code on failure
96  */
97  virtual int mkdir(const char *path, mode_t mode);
98 
99  /** Store information about the mounted filesystem in a statvfs structure
100  *
101  * @param path The name of the file to find information about
102  * @param buf The stat buffer to write to
103  * @return 0 on success, negative error code on failure
104  */
105  virtual int statvfs(const char *path, struct statvfs *buf);
106 };
107 /**@}*/
108 
109 /**@}*/
110 
111 } // namespace mbed
112 
113 #endif
mbed::DirHandle
Represents a directory stream.
Definition: DirHandle.h:56
mbed::FileSystemHandle::~FileSystemHandle
virtual ~FileSystemHandle()
FileSystemHandle lifetime.
Definition: FileSystemHandle.h:48
mbed::FileSystemHandle::open
virtual int open(FileHandle **file, const char *filename, int flags)=0
Open a file on the filesystem.
mbed::FileHandle
Class FileHandle.
Definition: FileHandle.h:46
mbed::NonCopyable
Prevents generation of copy constructor and copy assignment operator in derived classes.
Definition: NonCopyable.h:168
mbed::FileSystemHandle::stat
virtual int stat(const char *path, struct stat *st)
Store information about the file in a stat structure.
mbed::FileSystemHandle
A filesystem-like object is one that can be used to open file-like objects though it by fopen("/name/...
Definition: FileSystemHandle.h:44
mbed::FileSystemHandle::statvfs
virtual int statvfs(const char *path, struct statvfs *buf)
Store information about the mounted filesystem in a statvfs structure.
mbed::FileSystemHandle::rename
virtual int rename(const char *path, const char *newpath)
Rename a file in the filesystem.
mbed::FileSystemHandle::mkdir
virtual int mkdir(const char *path, mode_t mode)
Create a directory in the filesystem.
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