Nicolas Borla / Mbed OS BBR_1Ebene

BBR 1 Ebene

mbed-os/features/filesystem/FileSystem.cpp@0:fbdae7e6d805, 2018-05-14 (annotated)

Committer:
borlanic
Date:
Mon May 14 11:29:06 2018 +0000
Revision:
0:fbdae7e6d805
BBR

Who changed what in which revision?

UserRevisionLine numberNew contents of line
borlanic 0:fbdae7e6d805 1 /* mbed Microcontroller Library
borlanic 0:fbdae7e6d805 2 * Copyright (c) 2006-2013 ARM Limited
borlanic 0:fbdae7e6d805 3 *
borlanic 0:fbdae7e6d805 4 * Licensed under the Apache License, Version 2.0 (the "License");
borlanic 0:fbdae7e6d805 5 * you may not use this file except in compliance with the License.
borlanic 0:fbdae7e6d805 6 * You may obtain a copy of the License at
borlanic 0:fbdae7e6d805 7 *
borlanic 0:fbdae7e6d805 8 * http://www.apache.org/licenses/LICENSE-2.0
borlanic 0:fbdae7e6d805 9 *
borlanic 0:fbdae7e6d805 10 * Unless required by applicable law or agreed to in writing, software
borlanic 0:fbdae7e6d805 11 * distributed under the License is distributed on an "AS IS" BASIS,
borlanic 0:fbdae7e6d805 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
borlanic 0:fbdae7e6d805 13 * See the License for the specific language governing permissions and
borlanic 0:fbdae7e6d805 14 * limitations under the License.
borlanic 0:fbdae7e6d805 15 */
borlanic 0:fbdae7e6d805 16
borlanic 0:fbdae7e6d805 17 #include "mbed.h"
borlanic 0:fbdae7e6d805 18 #include "filesystem/Dir.h"
borlanic 0:fbdae7e6d805 19 #include "filesystem/File.h"
borlanic 0:fbdae7e6d805 20 #include "filesystem/FileSystem.h"
borlanic 0:fbdae7e6d805 21 #include <errno.h>
borlanic 0:fbdae7e6d805 22
borlanic 0:fbdae7e6d805 23
borlanic 0:fbdae7e6d805 24 FileSystem::FileSystem(const char *name)
borlanic 0:fbdae7e6d805 25 : FileSystemLike(name)
borlanic 0:fbdae7e6d805 26 {
borlanic 0:fbdae7e6d805 27 }
borlanic 0:fbdae7e6d805 28
borlanic 0:fbdae7e6d805 29 int FileSystem::reformat(BlockDevice *bd)
borlanic 0:fbdae7e6d805 30 {
borlanic 0:fbdae7e6d805 31 return -ENOSYS;
borlanic 0:fbdae7e6d805 32 }
borlanic 0:fbdae7e6d805 33
borlanic 0:fbdae7e6d805 34 int FileSystem::remove(const char *path)
borlanic 0:fbdae7e6d805 35 {
borlanic 0:fbdae7e6d805 36 return -ENOSYS;
borlanic 0:fbdae7e6d805 37 }
borlanic 0:fbdae7e6d805 38
borlanic 0:fbdae7e6d805 39 int FileSystem::rename(const char *path, const char *newpath)
borlanic 0:fbdae7e6d805 40 {
borlanic 0:fbdae7e6d805 41 return -ENOSYS;
borlanic 0:fbdae7e6d805 42 }
borlanic 0:fbdae7e6d805 43
borlanic 0:fbdae7e6d805 44 int FileSystem::stat(const char *path, struct stat *st)
borlanic 0:fbdae7e6d805 45 {
borlanic 0:fbdae7e6d805 46 return -ENOSYS;
borlanic 0:fbdae7e6d805 47 }
borlanic 0:fbdae7e6d805 48
borlanic 0:fbdae7e6d805 49 int FileSystem::mkdir(const char *path, mode_t mode)
borlanic 0:fbdae7e6d805 50 {
borlanic 0:fbdae7e6d805 51 return -ENOSYS;
borlanic 0:fbdae7e6d805 52 }
borlanic 0:fbdae7e6d805 53
borlanic 0:fbdae7e6d805 54 int FileSystem::statvfs(const char *path, struct statvfs *buf)
borlanic 0:fbdae7e6d805 55 {
borlanic 0:fbdae7e6d805 56 return -ENOSYS;
borlanic 0:fbdae7e6d805 57 }
borlanic 0:fbdae7e6d805 58
borlanic 0:fbdae7e6d805 59 int FileSystem::file_sync(fs_file_t file)
borlanic 0:fbdae7e6d805 60 {
borlanic 0:fbdae7e6d805 61 return 0;
borlanic 0:fbdae7e6d805 62 }
borlanic 0:fbdae7e6d805 63
borlanic 0:fbdae7e6d805 64 int FileSystem::file_isatty(fs_file_t file)
borlanic 0:fbdae7e6d805 65 {
borlanic 0:fbdae7e6d805 66 return false;
borlanic 0:fbdae7e6d805 67 }
borlanic 0:fbdae7e6d805 68
borlanic 0:fbdae7e6d805 69 off_t FileSystem::file_tell(fs_file_t file)
borlanic 0:fbdae7e6d805 70 {
borlanic 0:fbdae7e6d805 71 return file_seek(file, 0, SEEK_CUR);
borlanic 0:fbdae7e6d805 72 }
borlanic 0:fbdae7e6d805 73
borlanic 0:fbdae7e6d805 74 void FileSystem::file_rewind(fs_file_t file)
borlanic 0:fbdae7e6d805 75 {
borlanic 0:fbdae7e6d805 76 file_seek(file, 0, SEEK_SET);
borlanic 0:fbdae7e6d805 77 }
borlanic 0:fbdae7e6d805 78
borlanic 0:fbdae7e6d805 79 off_t FileSystem::file_size(fs_file_t file)
borlanic 0:fbdae7e6d805 80 {
borlanic 0:fbdae7e6d805 81 off_t off = file_tell(file);
borlanic 0:fbdae7e6d805 82 off_t size = file_seek(file, 0, SEEK_END);
borlanic 0:fbdae7e6d805 83 file_seek(file, off, SEEK_SET);
borlanic 0:fbdae7e6d805 84 return size;
borlanic 0:fbdae7e6d805 85 }
borlanic 0:fbdae7e6d805 86
borlanic 0:fbdae7e6d805 87 int FileSystem::dir_open(fs_dir_t *dir, const char *path)
borlanic 0:fbdae7e6d805 88 {
borlanic 0:fbdae7e6d805 89 return -ENOSYS;
borlanic 0:fbdae7e6d805 90 }
borlanic 0:fbdae7e6d805 91
borlanic 0:fbdae7e6d805 92 int FileSystem::dir_close(fs_dir_t dir)
borlanic 0:fbdae7e6d805 93 {
borlanic 0:fbdae7e6d805 94 return -ENOSYS;
borlanic 0:fbdae7e6d805 95 }
borlanic 0:fbdae7e6d805 96
borlanic 0:fbdae7e6d805 97 ssize_t FileSystem::dir_read(fs_dir_t dir, struct dirent *ent)
borlanic 0:fbdae7e6d805 98 {
borlanic 0:fbdae7e6d805 99 return -ENOSYS;
borlanic 0:fbdae7e6d805 100 }
borlanic 0:fbdae7e6d805 101
borlanic 0:fbdae7e6d805 102 void FileSystem::dir_seek(fs_dir_t dir, off_t offset)
borlanic 0:fbdae7e6d805 103 {
borlanic 0:fbdae7e6d805 104 }
borlanic 0:fbdae7e6d805 105
borlanic 0:fbdae7e6d805 106 off_t FileSystem::dir_tell(fs_dir_t dir)
borlanic 0:fbdae7e6d805 107 {
borlanic 0:fbdae7e6d805 108 return 0;
borlanic 0:fbdae7e6d805 109 }
borlanic 0:fbdae7e6d805 110
borlanic 0:fbdae7e6d805 111 void FileSystem::dir_rewind(fs_dir_t dir)
borlanic 0:fbdae7e6d805 112 {
borlanic 0:fbdae7e6d805 113 // Note, the may not satisfy rewind on all filesystems
borlanic 0:fbdae7e6d805 114 dir_seek(dir, 0);
borlanic 0:fbdae7e6d805 115 }
borlanic 0:fbdae7e6d805 116
borlanic 0:fbdae7e6d805 117 size_t FileSystem::dir_size(fs_dir_t dir)
borlanic 0:fbdae7e6d805 118 {
borlanic 0:fbdae7e6d805 119 off_t off = dir_tell(dir);
borlanic 0:fbdae7e6d805 120 size_t size = 0;
borlanic 0:fbdae7e6d805 121 struct dirent *ent = new struct dirent;
borlanic 0:fbdae7e6d805 122
borlanic 0:fbdae7e6d805 123 dir_rewind(dir);
borlanic 0:fbdae7e6d805 124 while (true) {
borlanic 0:fbdae7e6d805 125 int res = dir_read(dir, ent);
borlanic 0:fbdae7e6d805 126 if (res <= 0) {
borlanic 0:fbdae7e6d805 127 break;
borlanic 0:fbdae7e6d805 128 }
borlanic 0:fbdae7e6d805 129
borlanic 0:fbdae7e6d805 130 size += 1;
borlanic 0:fbdae7e6d805 131 }
borlanic 0:fbdae7e6d805 132 dir_seek(dir, off);
borlanic 0:fbdae7e6d805 133
borlanic 0:fbdae7e6d805 134 delete ent;
borlanic 0:fbdae7e6d805 135 return size;
borlanic 0:fbdae7e6d805 136 }
borlanic 0:fbdae7e6d805 137
borlanic 0:fbdae7e6d805 138 // Internally used file wrapper that manages memory on close
borlanic 0:fbdae7e6d805 139 template <typename F>
borlanic 0:fbdae7e6d805 140 class Managed : public F {
borlanic 0:fbdae7e6d805 141 public:
borlanic 0:fbdae7e6d805 142 virtual int close() {
borlanic 0:fbdae7e6d805 143 int err = F::close();
borlanic 0:fbdae7e6d805 144 delete this;
borlanic 0:fbdae7e6d805 145 return err;
borlanic 0:fbdae7e6d805 146 }
borlanic 0:fbdae7e6d805 147 };
borlanic 0:fbdae7e6d805 148
borlanic 0:fbdae7e6d805 149 int FileSystem::open(FileHandle **file, const char *path, int flags)
borlanic 0:fbdae7e6d805 150 {
borlanic 0:fbdae7e6d805 151 File *f = new Managed<File>;
borlanic 0:fbdae7e6d805 152 int err = f->open(this, path, flags);
borlanic 0:fbdae7e6d805 153 if (err) {
borlanic 0:fbdae7e6d805 154 delete f;
borlanic 0:fbdae7e6d805 155 return err;
borlanic 0:fbdae7e6d805 156 }
borlanic 0:fbdae7e6d805 157
borlanic 0:fbdae7e6d805 158 *file = f;
borlanic 0:fbdae7e6d805 159 return 0;
borlanic 0:fbdae7e6d805 160 }
borlanic 0:fbdae7e6d805 161
borlanic 0:fbdae7e6d805 162 int FileSystem::open(DirHandle **dir, const char *path) {
borlanic 0:fbdae7e6d805 163 Dir *d = new Managed<Dir>;
borlanic 0:fbdae7e6d805 164 int err = d->open(this, path);
borlanic 0:fbdae7e6d805 165 if (err) {
borlanic 0:fbdae7e6d805 166 delete d;
borlanic 0:fbdae7e6d805 167 return err;
borlanic 0:fbdae7e6d805 168 }
borlanic 0:fbdae7e6d805 169
borlanic 0:fbdae7e6d805 170 *dir = d;
borlanic 0:fbdae7e6d805 171 return 0;
borlanic 0:fbdae7e6d805 172 }