Kev Mann / mbed-dev-OS5_10_4

RTC auf true

features/storage/filesystem/FileSystem.cpp@2:7aab896b1a3b, 2019-03-13 (annotated)

Committer:
kevman
Date:
Wed Mar 13 11:03:24 2019 +0000
Revision:
2:7aab896b1a3b
Parent:
0:38ceb79fef03 
2019-03-13

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kevman 0:38ceb79fef03 1 /* mbed Microcontroller Library
kevman 0:38ceb79fef03 2 * Copyright (c) 2006-2013 ARM Limited
kevman 0:38ceb79fef03 3 *
kevman 0:38ceb79fef03 4 * Licensed under the Apache License, Version 2.0 (the "License");
kevman 0:38ceb79fef03 5 * you may not use this file except in compliance with the License.
kevman 0:38ceb79fef03 6 * You may obtain a copy of the License at
kevman 0:38ceb79fef03 7 *
kevman 0:38ceb79fef03 8 * http://www.apache.org/licenses/LICENSE-2.0
kevman 0:38ceb79fef03 9 *
kevman 0:38ceb79fef03 10 * Unless required by applicable law or agreed to in writing, software
kevman 0:38ceb79fef03 11 * distributed under the License is distributed on an "AS IS" BASIS,
kevman 0:38ceb79fef03 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kevman 0:38ceb79fef03 13 * See the License for the specific language governing permissions and
kevman 0:38ceb79fef03 14 * limitations under the License.
kevman 0:38ceb79fef03 15 */
kevman 0:38ceb79fef03 16
kevman 0:38ceb79fef03 17 #include "filesystem/Dir.h"
kevman 0:38ceb79fef03 18 #include "filesystem/File.h"
kevman 0:38ceb79fef03 19 #include "filesystem/FileSystem.h"
kevman 0:38ceb79fef03 20 #include <errno.h>
kevman 0:38ceb79fef03 21
kevman 0:38ceb79fef03 22 namespace mbed {
kevman 0:38ceb79fef03 23
kevman 0:38ceb79fef03 24 FileSystem::FileSystem(const char *name)
kevman 0:38ceb79fef03 25 : FileSystemLike(name)
kevman 0:38ceb79fef03 26 {
kevman 0:38ceb79fef03 27 }
kevman 0:38ceb79fef03 28
kevman 0:38ceb79fef03 29 int FileSystem::reformat(BlockDevice *bd)
kevman 0:38ceb79fef03 30 {
kevman 0:38ceb79fef03 31 return -ENOSYS;
kevman 0:38ceb79fef03 32 }
kevman 0:38ceb79fef03 33
kevman 0:38ceb79fef03 34 int FileSystem::remove(const char *path)
kevman 0:38ceb79fef03 35 {
kevman 0:38ceb79fef03 36 return -ENOSYS;
kevman 0:38ceb79fef03 37 }
kevman 0:38ceb79fef03 38
kevman 0:38ceb79fef03 39 int FileSystem::rename(const char *path, const char *newpath)
kevman 0:38ceb79fef03 40 {
kevman 0:38ceb79fef03 41 return -ENOSYS;
kevman 0:38ceb79fef03 42 }
kevman 0:38ceb79fef03 43
kevman 0:38ceb79fef03 44 int FileSystem::stat(const char *path, struct stat *st)
kevman 0:38ceb79fef03 45 {
kevman 0:38ceb79fef03 46 return -ENOSYS;
kevman 0:38ceb79fef03 47 }
kevman 0:38ceb79fef03 48
kevman 0:38ceb79fef03 49 int FileSystem::mkdir(const char *path, mode_t mode)
kevman 0:38ceb79fef03 50 {
kevman 0:38ceb79fef03 51 return -ENOSYS;
kevman 0:38ceb79fef03 52 }
kevman 0:38ceb79fef03 53
kevman 0:38ceb79fef03 54 int FileSystem::statvfs(const char *path, struct statvfs *buf)
kevman 0:38ceb79fef03 55 {
kevman 0:38ceb79fef03 56 return -ENOSYS;
kevman 0:38ceb79fef03 57 }
kevman 0:38ceb79fef03 58
kevman 0:38ceb79fef03 59 int FileSystem::file_sync(fs_file_t file)
kevman 0:38ceb79fef03 60 {
kevman 0:38ceb79fef03 61 return 0;
kevman 0:38ceb79fef03 62 }
kevman 0:38ceb79fef03 63
kevman 0:38ceb79fef03 64 int FileSystem::file_isatty(fs_file_t file)
kevman 0:38ceb79fef03 65 {
kevman 0:38ceb79fef03 66 return false;
kevman 0:38ceb79fef03 67 }
kevman 0:38ceb79fef03 68
kevman 0:38ceb79fef03 69 off_t FileSystem::file_tell(fs_file_t file)
kevman 0:38ceb79fef03 70 {
kevman 0:38ceb79fef03 71 return file_seek(file, 0, SEEK_CUR);
kevman 0:38ceb79fef03 72 }
kevman 0:38ceb79fef03 73
kevman 0:38ceb79fef03 74 void FileSystem::file_rewind(fs_file_t file)
kevman 0:38ceb79fef03 75 {
kevman 0:38ceb79fef03 76 file_seek(file, 0, SEEK_SET);
kevman 0:38ceb79fef03 77 }
kevman 0:38ceb79fef03 78
kevman 0:38ceb79fef03 79 off_t FileSystem::file_size(fs_file_t file)
kevman 0:38ceb79fef03 80 {
kevman 0:38ceb79fef03 81 off_t off = file_tell(file);
kevman 0:38ceb79fef03 82 off_t size = file_seek(file, 0, SEEK_END);
kevman 0:38ceb79fef03 83 file_seek(file, off, SEEK_SET);
kevman 0:38ceb79fef03 84 return size;
kevman 0:38ceb79fef03 85 }
kevman 0:38ceb79fef03 86
kevman 0:38ceb79fef03 87 int FileSystem::dir_open(fs_dir_t *dir, const char *path)
kevman 0:38ceb79fef03 88 {
kevman 0:38ceb79fef03 89 return -ENOSYS;
kevman 0:38ceb79fef03 90 }
kevman 0:38ceb79fef03 91
kevman 0:38ceb79fef03 92 int FileSystem::dir_close(fs_dir_t dir)
kevman 0:38ceb79fef03 93 {
kevman 0:38ceb79fef03 94 return -ENOSYS;
kevman 0:38ceb79fef03 95 }
kevman 0:38ceb79fef03 96
kevman 0:38ceb79fef03 97 ssize_t FileSystem::dir_read(fs_dir_t dir, struct dirent *ent)
kevman 0:38ceb79fef03 98 {
kevman 0:38ceb79fef03 99 return -ENOSYS;
kevman 0:38ceb79fef03 100 }
kevman 0:38ceb79fef03 101
kevman 0:38ceb79fef03 102 void FileSystem::dir_seek(fs_dir_t dir, off_t offset)
kevman 0:38ceb79fef03 103 {
kevman 0:38ceb79fef03 104 }
kevman 0:38ceb79fef03 105
kevman 0:38ceb79fef03 106 off_t FileSystem::dir_tell(fs_dir_t dir)
kevman 0:38ceb79fef03 107 {
kevman 0:38ceb79fef03 108 return 0;
kevman 0:38ceb79fef03 109 }
kevman 0:38ceb79fef03 110
kevman 0:38ceb79fef03 111 void FileSystem::dir_rewind(fs_dir_t dir)
kevman 0:38ceb79fef03 112 {
kevman 0:38ceb79fef03 113 // Note, the may not satisfy rewind on all filesystems
kevman 0:38ceb79fef03 114 dir_seek(dir, 0);
kevman 0:38ceb79fef03 115 }
kevman 0:38ceb79fef03 116
kevman 0:38ceb79fef03 117 size_t FileSystem::dir_size(fs_dir_t dir)
kevman 0:38ceb79fef03 118 {
kevman 0:38ceb79fef03 119 off_t off = dir_tell(dir);
kevman 0:38ceb79fef03 120 size_t size = 0;
kevman 0:38ceb79fef03 121 struct dirent *ent = new struct dirent;
kevman 0:38ceb79fef03 122
kevman 0:38ceb79fef03 123 dir_rewind(dir);
kevman 0:38ceb79fef03 124 while (true) {
kevman 0:38ceb79fef03 125 int res = dir_read(dir, ent);
kevman 0:38ceb79fef03 126 if (res <= 0) {
kevman 0:38ceb79fef03 127 break;
kevman 0:38ceb79fef03 128 }
kevman 0:38ceb79fef03 129
kevman 0:38ceb79fef03 130 size += 1;
kevman 0:38ceb79fef03 131 }
kevman 0:38ceb79fef03 132 dir_seek(dir, off);
kevman 0:38ceb79fef03 133
kevman 0:38ceb79fef03 134 delete ent;
kevman 0:38ceb79fef03 135 return size;
kevman 0:38ceb79fef03 136 }
kevman 0:38ceb79fef03 137
kevman 0:38ceb79fef03 138 // Internally used file wrapper that manages memory on close
kevman 0:38ceb79fef03 139 template <typename F>
kevman 0:38ceb79fef03 140 class Managed : public F {
kevman 0:38ceb79fef03 141 public:
kevman 0:38ceb79fef03 142 virtual int close() {
kevman 0:38ceb79fef03 143 int err = F::close();
kevman 0:38ceb79fef03 144 delete this;
kevman 0:38ceb79fef03 145 return err;
kevman 0:38ceb79fef03 146 }
kevman 0:38ceb79fef03 147 };
kevman 0:38ceb79fef03 148
kevman 0:38ceb79fef03 149 int FileSystem::open(FileHandle **file, const char *path, int flags)
kevman 0:38ceb79fef03 150 {
kevman 0:38ceb79fef03 151 File *f = new Managed<File>;
kevman 0:38ceb79fef03 152 int err = f->open(this, path, flags);
kevman 0:38ceb79fef03 153 if (err) {
kevman 0:38ceb79fef03 154 delete f;
kevman 0:38ceb79fef03 155 return err;
kevman 0:38ceb79fef03 156 }
kevman 0:38ceb79fef03 157
kevman 0:38ceb79fef03 158 *file = f;
kevman 0:38ceb79fef03 159 return 0;
kevman 0:38ceb79fef03 160 }
kevman 0:38ceb79fef03 161
kevman 0:38ceb79fef03 162 int FileSystem::open(DirHandle **dir, const char *path) {
kevman 0:38ceb79fef03 163 Dir *d = new Managed<Dir>;
kevman 0:38ceb79fef03 164 int err = d->open(this, path);
kevman 0:38ceb79fef03 165 if (err) {
kevman 0:38ceb79fef03 166 delete d;
kevman 0:38ceb79fef03 167 return err;
kevman 0:38ceb79fef03 168 }
kevman 0:38ceb79fef03 169
kevman 0:38ceb79fef03 170 *dir = d;
kevman 0:38ceb79fef03 171 return 0;
kevman 0:38ceb79fef03 172 }
kevman 0:38ceb79fef03 173
kevman 0:38ceb79fef03 174 } // namespace mbed