Keil Studio Cloud
Mistake on this page?
Report an issue in GitHub or email us
FileSystemHandle.h
1 /* mbed Microcontroller Library
2  * Copyright (c) 2006-2019 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/FileHandle.h"
23 #include "platform/DirHandle.h"
24 #include "platform/NonCopyable.h"
25 
26 namespace mbed {
27 /**
28  * \defgroup platform_FileSystemHandle FileSystemHandle functions
29  * \ingroup platform-public-api-file
30  * @{
31  */
32 
33 
34 /** A filesystem-like object is one that can be used to open file-like
35  * objects though it by fopen("/name/filename", mode)
36  *
37  * Implementations must define at least open (the default definitions
38  * of the rest of the functions just return error values).
39  *
40  * @note Synchronization level: Set by subclass
41  */
42 class FileSystemHandle : private NonCopyable<FileSystemHandle> {
43 public:
44  /** FileSystemHandle lifetime
45  */
46  virtual ~FileSystemHandle() {}
47 
48  /** Open a file on the filesystem
49  *
50  * @param file Destination for the handle to a newly created file
51  * @param filename The name of the file to open
52  * @param flags The flags to open the file in, one of O_RDONLY, O_WRONLY, O_RDWR,
53  * bitwise or'd with one of O_CREAT, O_TRUNC, O_APPEND
54  * @return 0 on success, negative error code on failure
55  */
56  virtual int open(FileHandle **file, const char *filename, int flags) = 0;
57 
58  /** Open a directory on the filesystem
59  *
60  * @param dir Destination for the handle to the directory
61  * @param path Name of the directory to open
62  * @return 0 on success, negative error code on failure
63  */
64  virtual int open(DirHandle **dir, const char *path);
65 
66  /** Remove a file from the filesystem.
67  *
68  * @param path The name of the file to remove.
69  * @return 0 on success, negative error code on failure
70  */
71  virtual int remove(const char *path);
72 
73  /** Rename a file in the filesystem.
74  *
75  * @param path The name of the file to rename.
76  * @param newpath The name to rename it to
77  * @return 0 on success, negative error code on failure
78  */
79  virtual int rename(const char *path, const char *newpath);
80 
81  /** Store information about the file in a stat structure
82  *
83  * @param path The name of the file to find information about
84  * @param st The stat buffer to write to
85  * @return 0 on success, negative error code on failure
86  */
87  virtual int stat(const char *path, struct stat *st);
88 
89  /** Create a directory in the filesystem.
90  *
91  * @param path The name of the directory to create.
92  * @param mode The permissions with which to create the directory
93  * @return 0 on success, negative error code on failure
94  */
95  virtual int mkdir(const char *path, mode_t mode);
96 
97  /** Store information about the mounted filesystem in a statvfs structure
98  *
99  * @param path The name of the file to find information about
100  * @param buf The stat buffer to write to
101  * @return 0 on success, negative error code on failure
102  */
103  virtual int statvfs(const char *path, struct statvfs *buf);
104 };
105 /**@}*/
106 
107 } // namespace mbed
108 
109 #endif
mbed::DirHandle
Represents a directory stream.
Definition: DirHandle.h:55
mbed::FileSystemHandle::~FileSystemHandle
virtual ~FileSystemHandle()
FileSystemHandle lifetime.
Definition: FileSystemHandle.h:46
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:162
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:42
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
Definition: ATHandler.h:46
mbed::FileSystemHandle::mkdir
virtual int mkdir(const char *path, mode_t mode)
Create a directory in the filesystem.
Important Information for this Arm website

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies. If you are not happy with the use of these cookies, please review our Cookie Policy to learn how they can be disabled. By disabling cookies, some features of the site will not work.