Nicolas Borla / Mbed OS BBR_1Ebene

BBR 1 Ebene

mbed-os/features/filesystem/littlefs/LittleFileSystem.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) 2017 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 #include "mbed.h"
borlanic 0:fbdae7e6d805 17 #include "LittleFileSystem.h"
borlanic 0:fbdae7e6d805 18 #include "errno.h"
borlanic 0:fbdae7e6d805 19 extern "C" {
borlanic 0:fbdae7e6d805 20 #include "lfs.h"
borlanic 0:fbdae7e6d805 21 #include "lfs_util.h"
borlanic 0:fbdae7e6d805 22 }
borlanic 0:fbdae7e6d805 23
borlanic 0:fbdae7e6d805 24
borlanic 0:fbdae7e6d805 25 ////// Conversion functions //////
borlanic 0:fbdae7e6d805 26 static int lfs_toerror(int err)
borlanic 0:fbdae7e6d805 27 {
borlanic 0:fbdae7e6d805 28 switch (err) {
borlanic 0:fbdae7e6d805 29 case LFS_ERR_OK: return 0;
borlanic 0:fbdae7e6d805 30 case LFS_ERR_IO: return -EIO;
borlanic 0:fbdae7e6d805 31 case LFS_ERR_NOENT: return -ENOENT;
borlanic 0:fbdae7e6d805 32 case LFS_ERR_EXIST: return -EEXIST;
borlanic 0:fbdae7e6d805 33 case LFS_ERR_NOTDIR: return -ENOTDIR;
borlanic 0:fbdae7e6d805 34 case LFS_ERR_ISDIR: return -EISDIR;
borlanic 0:fbdae7e6d805 35 case LFS_ERR_INVAL: return -EINVAL;
borlanic 0:fbdae7e6d805 36 case LFS_ERR_NOSPC: return -ENOSPC;
borlanic 0:fbdae7e6d805 37 case LFS_ERR_NOMEM: return -ENOMEM;
borlanic 0:fbdae7e6d805 38 default: return err;
borlanic 0:fbdae7e6d805 39 }
borlanic 0:fbdae7e6d805 40 }
borlanic 0:fbdae7e6d805 41
borlanic 0:fbdae7e6d805 42 static int lfs_fromflags(int flags)
borlanic 0:fbdae7e6d805 43 {
borlanic 0:fbdae7e6d805 44 return (
borlanic 0:fbdae7e6d805 45 (((flags & 3) == O_RDONLY) ? LFS_O_RDONLY : 0) |
borlanic 0:fbdae7e6d805 46 (((flags & 3) == O_WRONLY) ? LFS_O_WRONLY : 0) |
borlanic 0:fbdae7e6d805 47 (((flags & 3) == O_RDWR) ? LFS_O_RDWR : 0) |
borlanic 0:fbdae7e6d805 48 ((flags & O_CREAT) ? LFS_O_CREAT : 0) |
borlanic 0:fbdae7e6d805 49 ((flags & O_EXCL) ? LFS_O_EXCL : 0) |
borlanic 0:fbdae7e6d805 50 ((flags & O_TRUNC) ? LFS_O_TRUNC : 0) |
borlanic 0:fbdae7e6d805 51 ((flags & O_APPEND) ? LFS_O_APPEND : 0));
borlanic 0:fbdae7e6d805 52 }
borlanic 0:fbdae7e6d805 53
borlanic 0:fbdae7e6d805 54 static int lfs_fromwhence(int whence)
borlanic 0:fbdae7e6d805 55 {
borlanic 0:fbdae7e6d805 56 switch (whence) {
borlanic 0:fbdae7e6d805 57 case SEEK_SET: return LFS_SEEK_SET;
borlanic 0:fbdae7e6d805 58 case SEEK_CUR: return LFS_SEEK_CUR;
borlanic 0:fbdae7e6d805 59 case SEEK_END: return LFS_SEEK_END;
borlanic 0:fbdae7e6d805 60 default: return whence;
borlanic 0:fbdae7e6d805 61 }
borlanic 0:fbdae7e6d805 62 }
borlanic 0:fbdae7e6d805 63
borlanic 0:fbdae7e6d805 64 static int lfs_tomode(int type)
borlanic 0:fbdae7e6d805 65 {
borlanic 0:fbdae7e6d805 66 int mode = S_IRWXU | S_IRWXG | S_IRWXO;
borlanic 0:fbdae7e6d805 67 switch (type) {
borlanic 0:fbdae7e6d805 68 case LFS_TYPE_DIR: return mode | S_IFDIR;
borlanic 0:fbdae7e6d805 69 case LFS_TYPE_REG: return mode | S_IFREG;
borlanic 0:fbdae7e6d805 70 default: return 0;
borlanic 0:fbdae7e6d805 71 }
borlanic 0:fbdae7e6d805 72 }
borlanic 0:fbdae7e6d805 73
borlanic 0:fbdae7e6d805 74 static int lfs_totype(int type)
borlanic 0:fbdae7e6d805 75 {
borlanic 0:fbdae7e6d805 76 switch (type) {
borlanic 0:fbdae7e6d805 77 case LFS_TYPE_DIR: return DT_DIR;
borlanic 0:fbdae7e6d805 78 case LFS_TYPE_REG: return DT_REG;
borlanic 0:fbdae7e6d805 79 default: return DT_UNKNOWN;
borlanic 0:fbdae7e6d805 80 }
borlanic 0:fbdae7e6d805 81 }
borlanic 0:fbdae7e6d805 82
borlanic 0:fbdae7e6d805 83
borlanic 0:fbdae7e6d805 84 ////// Block device operations //////
borlanic 0:fbdae7e6d805 85 static int lfs_bd_read(const struct lfs_config *c, lfs_block_t block,
borlanic 0:fbdae7e6d805 86 lfs_off_t off, void *buffer, lfs_size_t size) {
borlanic 0:fbdae7e6d805 87 BlockDevice *bd = (BlockDevice *)c->context;
borlanic 0:fbdae7e6d805 88 return bd->read(buffer, (bd_addr_t)block*c->block_size + off, size);
borlanic 0:fbdae7e6d805 89 }
borlanic 0:fbdae7e6d805 90
borlanic 0:fbdae7e6d805 91 static int lfs_bd_prog(const struct lfs_config *c, lfs_block_t block,
borlanic 0:fbdae7e6d805 92 lfs_off_t off, const void *buffer, lfs_size_t size) {
borlanic 0:fbdae7e6d805 93 BlockDevice *bd = (BlockDevice *)c->context;
borlanic 0:fbdae7e6d805 94 return bd->program(buffer, (bd_addr_t)block*c->block_size + off, size);
borlanic 0:fbdae7e6d805 95 }
borlanic 0:fbdae7e6d805 96
borlanic 0:fbdae7e6d805 97 static int lfs_bd_erase(const struct lfs_config *c, lfs_block_t block)
borlanic 0:fbdae7e6d805 98 {
borlanic 0:fbdae7e6d805 99 BlockDevice *bd = (BlockDevice *)c->context;
borlanic 0:fbdae7e6d805 100 return bd->erase((bd_addr_t)block*c->block_size, c->block_size);
borlanic 0:fbdae7e6d805 101 }
borlanic 0:fbdae7e6d805 102
borlanic 0:fbdae7e6d805 103 static int lfs_bd_sync(const struct lfs_config *c)
borlanic 0:fbdae7e6d805 104 {
borlanic 0:fbdae7e6d805 105 BlockDevice *bd = (BlockDevice *)c->context;
borlanic 0:fbdae7e6d805 106 return bd->sync();
borlanic 0:fbdae7e6d805 107 }
borlanic 0:fbdae7e6d805 108
borlanic 0:fbdae7e6d805 109
borlanic 0:fbdae7e6d805 110 ////// Generic filesystem operations //////
borlanic 0:fbdae7e6d805 111
borlanic 0:fbdae7e6d805 112 // Filesystem implementation (See LittleFileSystem.h)
borlanic 0:fbdae7e6d805 113 LittleFileSystem::LittleFileSystem(const char *name, BlockDevice *bd,
borlanic 0:fbdae7e6d805 114 lfs_size_t read_size, lfs_size_t prog_size,
borlanic 0:fbdae7e6d805 115 lfs_size_t block_size, lfs_size_t lookahead)
borlanic 0:fbdae7e6d805 116 : FileSystem(name)
borlanic 0:fbdae7e6d805 117 , _read_size(read_size)
borlanic 0:fbdae7e6d805 118 , _prog_size(prog_size)
borlanic 0:fbdae7e6d805 119 , _block_size(block_size)
borlanic 0:fbdae7e6d805 120 , _lookahead(lookahead) {
borlanic 0:fbdae7e6d805 121 if (bd) {
borlanic 0:fbdae7e6d805 122 mount(bd);
borlanic 0:fbdae7e6d805 123 }
borlanic 0:fbdae7e6d805 124 }
borlanic 0:fbdae7e6d805 125
borlanic 0:fbdae7e6d805 126 LittleFileSystem::~LittleFileSystem() {
borlanic 0:fbdae7e6d805 127 // nop if unmounted
borlanic 0:fbdae7e6d805 128 unmount();
borlanic 0:fbdae7e6d805 129 }
borlanic 0:fbdae7e6d805 130
borlanic 0:fbdae7e6d805 131 int LittleFileSystem::mount(BlockDevice *bd)
borlanic 0:fbdae7e6d805 132 {
borlanic 0:fbdae7e6d805 133 _mutex.lock();
borlanic 0:fbdae7e6d805 134 LFS_INFO("mount(%p)", bd);
borlanic 0:fbdae7e6d805 135 _bd = bd;
borlanic 0:fbdae7e6d805 136 int err = _bd->init();
borlanic 0:fbdae7e6d805 137 if (err) {
borlanic 0:fbdae7e6d805 138 LFS_INFO("mount -> %d", err);
borlanic 0:fbdae7e6d805 139 _mutex.unlock();
borlanic 0:fbdae7e6d805 140 return err;
borlanic 0:fbdae7e6d805 141 }
borlanic 0:fbdae7e6d805 142
borlanic 0:fbdae7e6d805 143 memset(&_config, 0, sizeof(_config));
borlanic 0:fbdae7e6d805 144 _config.context = bd;
borlanic 0:fbdae7e6d805 145 _config.read = lfs_bd_read;
borlanic 0:fbdae7e6d805 146 _config.prog = lfs_bd_prog;
borlanic 0:fbdae7e6d805 147 _config.erase = lfs_bd_erase;
borlanic 0:fbdae7e6d805 148 _config.sync = lfs_bd_sync;
borlanic 0:fbdae7e6d805 149 _config.read_size = bd->get_read_size();
borlanic 0:fbdae7e6d805 150 if (_config.read_size < _read_size) {
borlanic 0:fbdae7e6d805 151 _config.read_size = _read_size;
borlanic 0:fbdae7e6d805 152 }
borlanic 0:fbdae7e6d805 153 _config.prog_size = bd->get_program_size();
borlanic 0:fbdae7e6d805 154 if (_config.prog_size < _prog_size) {
borlanic 0:fbdae7e6d805 155 _config.prog_size = _prog_size;
borlanic 0:fbdae7e6d805 156 }
borlanic 0:fbdae7e6d805 157 _config.block_size = bd->get_erase_size();
borlanic 0:fbdae7e6d805 158 if (_config.block_size < _block_size) {
borlanic 0:fbdae7e6d805 159 _config.block_size = _block_size;
borlanic 0:fbdae7e6d805 160 }
borlanic 0:fbdae7e6d805 161 _config.block_count = bd->size() / _config.block_size;
borlanic 0:fbdae7e6d805 162 _config.lookahead = 32 * ((_config.block_count+31)/32);
borlanic 0:fbdae7e6d805 163 if (_config.lookahead > _lookahead) {
borlanic 0:fbdae7e6d805 164 _config.lookahead = _lookahead;
borlanic 0:fbdae7e6d805 165 }
borlanic 0:fbdae7e6d805 166
borlanic 0:fbdae7e6d805 167 err = lfs_mount(&_lfs, &_config);
borlanic 0:fbdae7e6d805 168 LFS_INFO("mount -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 169 _mutex.unlock();
borlanic 0:fbdae7e6d805 170 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 171 }
borlanic 0:fbdae7e6d805 172
borlanic 0:fbdae7e6d805 173 int LittleFileSystem::unmount()
borlanic 0:fbdae7e6d805 174 {
borlanic 0:fbdae7e6d805 175 _mutex.lock();
borlanic 0:fbdae7e6d805 176 LFS_INFO("unmount(%s)", "");
borlanic 0:fbdae7e6d805 177 if (_bd) {
borlanic 0:fbdae7e6d805 178 int err = lfs_unmount(&_lfs);
borlanic 0:fbdae7e6d805 179 if (err) {
borlanic 0:fbdae7e6d805 180 LFS_INFO("unmount -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 181 _mutex.unlock();
borlanic 0:fbdae7e6d805 182 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 183 }
borlanic 0:fbdae7e6d805 184
borlanic 0:fbdae7e6d805 185 err = _bd->deinit();
borlanic 0:fbdae7e6d805 186 if (err) {
borlanic 0:fbdae7e6d805 187 LFS_INFO("unmount -> %d", err);
borlanic 0:fbdae7e6d805 188 _mutex.unlock();
borlanic 0:fbdae7e6d805 189 return err;
borlanic 0:fbdae7e6d805 190 }
borlanic 0:fbdae7e6d805 191
borlanic 0:fbdae7e6d805 192 _bd = NULL;
borlanic 0:fbdae7e6d805 193 }
borlanic 0:fbdae7e6d805 194
borlanic 0:fbdae7e6d805 195 LFS_INFO("unmount -> %d", 0);
borlanic 0:fbdae7e6d805 196 _mutex.unlock();
borlanic 0:fbdae7e6d805 197 return 0;
borlanic 0:fbdae7e6d805 198 }
borlanic 0:fbdae7e6d805 199
borlanic 0:fbdae7e6d805 200 int LittleFileSystem::format(BlockDevice *bd,
borlanic 0:fbdae7e6d805 201 lfs_size_t read_size, lfs_size_t prog_size,
borlanic 0:fbdae7e6d805 202 lfs_size_t block_size, lfs_size_t lookahead) {
borlanic 0:fbdae7e6d805 203 LFS_INFO("format(%p, %ld, %ld, %ld, %ld)",
borlanic 0:fbdae7e6d805 204 bd, read_size, prog_size, block_size, lookahead);
borlanic 0:fbdae7e6d805 205 int err = bd->init();
borlanic 0:fbdae7e6d805 206 if (err) {
borlanic 0:fbdae7e6d805 207 LFS_INFO("format -> %d", err);
borlanic 0:fbdae7e6d805 208 return err;
borlanic 0:fbdae7e6d805 209 }
borlanic 0:fbdae7e6d805 210
borlanic 0:fbdae7e6d805 211 lfs_t _lfs;
borlanic 0:fbdae7e6d805 212 struct lfs_config _config;
borlanic 0:fbdae7e6d805 213
borlanic 0:fbdae7e6d805 214 memset(&_config, 0, sizeof(_config));
borlanic 0:fbdae7e6d805 215 _config.context = bd;
borlanic 0:fbdae7e6d805 216 _config.read = lfs_bd_read;
borlanic 0:fbdae7e6d805 217 _config.prog = lfs_bd_prog;
borlanic 0:fbdae7e6d805 218 _config.erase = lfs_bd_erase;
borlanic 0:fbdae7e6d805 219 _config.sync = lfs_bd_sync;
borlanic 0:fbdae7e6d805 220 _config.read_size = bd->get_read_size();
borlanic 0:fbdae7e6d805 221 if (_config.read_size < read_size) {
borlanic 0:fbdae7e6d805 222 _config.read_size = read_size;
borlanic 0:fbdae7e6d805 223 }
borlanic 0:fbdae7e6d805 224 _config.prog_size = bd->get_program_size();
borlanic 0:fbdae7e6d805 225 if (_config.prog_size < prog_size) {
borlanic 0:fbdae7e6d805 226 _config.prog_size = prog_size;
borlanic 0:fbdae7e6d805 227 }
borlanic 0:fbdae7e6d805 228 _config.block_size = bd->get_erase_size();
borlanic 0:fbdae7e6d805 229 if (_config.block_size < block_size) {
borlanic 0:fbdae7e6d805 230 _config.block_size = block_size;
borlanic 0:fbdae7e6d805 231 }
borlanic 0:fbdae7e6d805 232 _config.block_count = bd->size() / _config.block_size;
borlanic 0:fbdae7e6d805 233 _config.lookahead = 32 * ((_config.block_count+31)/32);
borlanic 0:fbdae7e6d805 234 if (_config.lookahead > lookahead) {
borlanic 0:fbdae7e6d805 235 _config.lookahead = lookahead;
borlanic 0:fbdae7e6d805 236 }
borlanic 0:fbdae7e6d805 237
borlanic 0:fbdae7e6d805 238 err = lfs_format(&_lfs, &_config);
borlanic 0:fbdae7e6d805 239 if (err) {
borlanic 0:fbdae7e6d805 240 LFS_INFO("format -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 241 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 242 }
borlanic 0:fbdae7e6d805 243
borlanic 0:fbdae7e6d805 244 err = bd->deinit();
borlanic 0:fbdae7e6d805 245 if (err) {
borlanic 0:fbdae7e6d805 246 LFS_INFO("format -> %d", err);
borlanic 0:fbdae7e6d805 247 return err;
borlanic 0:fbdae7e6d805 248 }
borlanic 0:fbdae7e6d805 249
borlanic 0:fbdae7e6d805 250 LFS_INFO("format -> %d", 0);
borlanic 0:fbdae7e6d805 251 return 0;
borlanic 0:fbdae7e6d805 252 }
borlanic 0:fbdae7e6d805 253
borlanic 0:fbdae7e6d805 254 int LittleFileSystem::reformat(BlockDevice *bd)
borlanic 0:fbdae7e6d805 255 {
borlanic 0:fbdae7e6d805 256 _mutex.lock();
borlanic 0:fbdae7e6d805 257 LFS_INFO("reformat(%p)", bd);
borlanic 0:fbdae7e6d805 258 if (_bd) {
borlanic 0:fbdae7e6d805 259 if (!bd) {
borlanic 0:fbdae7e6d805 260 bd = _bd;
borlanic 0:fbdae7e6d805 261 }
borlanic 0:fbdae7e6d805 262
borlanic 0:fbdae7e6d805 263 int err = unmount();
borlanic 0:fbdae7e6d805 264 if (err) {
borlanic 0:fbdae7e6d805 265 LFS_INFO("reformat -> %d", err);
borlanic 0:fbdae7e6d805 266 _mutex.unlock();
borlanic 0:fbdae7e6d805 267 return err;
borlanic 0:fbdae7e6d805 268 }
borlanic 0:fbdae7e6d805 269 }
borlanic 0:fbdae7e6d805 270
borlanic 0:fbdae7e6d805 271 if (!bd) {
borlanic 0:fbdae7e6d805 272 LFS_INFO("reformat -> %d", -ENODEV);
borlanic 0:fbdae7e6d805 273 _mutex.unlock();
borlanic 0:fbdae7e6d805 274 return -ENODEV;
borlanic 0:fbdae7e6d805 275 }
borlanic 0:fbdae7e6d805 276
borlanic 0:fbdae7e6d805 277 int err = LittleFileSystem::format(bd,
borlanic 0:fbdae7e6d805 278 _read_size, _prog_size, _block_size, _lookahead);
borlanic 0:fbdae7e6d805 279 if (err) {
borlanic 0:fbdae7e6d805 280 LFS_INFO("reformat -> %d", err);
borlanic 0:fbdae7e6d805 281 _mutex.unlock();
borlanic 0:fbdae7e6d805 282 return err;
borlanic 0:fbdae7e6d805 283 }
borlanic 0:fbdae7e6d805 284
borlanic 0:fbdae7e6d805 285 err = mount(bd);
borlanic 0:fbdae7e6d805 286 if (err) {
borlanic 0:fbdae7e6d805 287 LFS_INFO("reformat -> %d", err);
borlanic 0:fbdae7e6d805 288 _mutex.unlock();
borlanic 0:fbdae7e6d805 289 return err;
borlanic 0:fbdae7e6d805 290 }
borlanic 0:fbdae7e6d805 291
borlanic 0:fbdae7e6d805 292 LFS_INFO("reformat -> %d", 0);
borlanic 0:fbdae7e6d805 293 _mutex.unlock();
borlanic 0:fbdae7e6d805 294 return 0;
borlanic 0:fbdae7e6d805 295 }
borlanic 0:fbdae7e6d805 296
borlanic 0:fbdae7e6d805 297 int LittleFileSystem::remove(const char *filename)
borlanic 0:fbdae7e6d805 298 {
borlanic 0:fbdae7e6d805 299 _mutex.lock();
borlanic 0:fbdae7e6d805 300 LFS_INFO("remove(\"%s\")", filename);
borlanic 0:fbdae7e6d805 301 int err = lfs_remove(&_lfs, filename);
borlanic 0:fbdae7e6d805 302 LFS_INFO("remove -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 303 _mutex.unlock();
borlanic 0:fbdae7e6d805 304 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 305 }
borlanic 0:fbdae7e6d805 306
borlanic 0:fbdae7e6d805 307 int LittleFileSystem::rename(const char *oldname, const char *newname)
borlanic 0:fbdae7e6d805 308 {
borlanic 0:fbdae7e6d805 309 _mutex.lock();
borlanic 0:fbdae7e6d805 310 LFS_INFO("rename(\"%s\", \"%s\")", oldname, newname);
borlanic 0:fbdae7e6d805 311 int err = lfs_rename(&_lfs, oldname, newname);
borlanic 0:fbdae7e6d805 312 LFS_INFO("rename -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 313 _mutex.unlock();
borlanic 0:fbdae7e6d805 314 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 315 }
borlanic 0:fbdae7e6d805 316
borlanic 0:fbdae7e6d805 317 int LittleFileSystem::mkdir(const char *name, mode_t mode)
borlanic 0:fbdae7e6d805 318 {
borlanic 0:fbdae7e6d805 319 _mutex.lock();
borlanic 0:fbdae7e6d805 320 LFS_INFO("mkdir(\"%s\", 0x%lx)", name, mode);
borlanic 0:fbdae7e6d805 321 int err = lfs_mkdir(&_lfs, name);
borlanic 0:fbdae7e6d805 322 LFS_INFO("mkdir -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 323 _mutex.unlock();
borlanic 0:fbdae7e6d805 324 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 325 }
borlanic 0:fbdae7e6d805 326
borlanic 0:fbdae7e6d805 327 int LittleFileSystem::stat(const char *name, struct stat *st)
borlanic 0:fbdae7e6d805 328 {
borlanic 0:fbdae7e6d805 329 struct lfs_info info;
borlanic 0:fbdae7e6d805 330 _mutex.lock();
borlanic 0:fbdae7e6d805 331 LFS_INFO("stat(\"%s\", %p)", name, st);
borlanic 0:fbdae7e6d805 332 int err = lfs_stat(&_lfs, name, &info);
borlanic 0:fbdae7e6d805 333 LFS_INFO("stat -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 334 _mutex.unlock();
borlanic 0:fbdae7e6d805 335 st->st_size = info.size;
borlanic 0:fbdae7e6d805 336 st->st_mode = lfs_tomode(info.type);
borlanic 0:fbdae7e6d805 337 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 338 }
borlanic 0:fbdae7e6d805 339
borlanic 0:fbdae7e6d805 340 static int lfs_statvfs_count(void *p, lfs_block_t b)
borlanic 0:fbdae7e6d805 341 {
borlanic 0:fbdae7e6d805 342 *(lfs_size_t *)p += 1;
borlanic 0:fbdae7e6d805 343 return 0;
borlanic 0:fbdae7e6d805 344 }
borlanic 0:fbdae7e6d805 345
borlanic 0:fbdae7e6d805 346 int LittleFileSystem::statvfs(const char *name, struct statvfs *st)
borlanic 0:fbdae7e6d805 347 {
borlanic 0:fbdae7e6d805 348 memset(st, 0, sizeof(struct statvfs));
borlanic 0:fbdae7e6d805 349
borlanic 0:fbdae7e6d805 350 lfs_size_t in_use = 0;
borlanic 0:fbdae7e6d805 351 _mutex.lock();
borlanic 0:fbdae7e6d805 352 LFS_INFO("statvfs(\"%s\", %p)", name, st);
borlanic 0:fbdae7e6d805 353 int err = lfs_traverse(&_lfs, lfs_statvfs_count, &in_use);
borlanic 0:fbdae7e6d805 354 LFS_INFO("statvfs -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 355 _mutex.unlock();
borlanic 0:fbdae7e6d805 356 if (err) {
borlanic 0:fbdae7e6d805 357 return err;
borlanic 0:fbdae7e6d805 358 }
borlanic 0:fbdae7e6d805 359
borlanic 0:fbdae7e6d805 360 st->f_bsize = _config.block_size;
borlanic 0:fbdae7e6d805 361 st->f_frsize = _config.block_size;
borlanic 0:fbdae7e6d805 362 st->f_blocks = _config.block_count;
borlanic 0:fbdae7e6d805 363 st->f_bfree = _config.block_count - in_use;
borlanic 0:fbdae7e6d805 364 st->f_bavail = _config.block_count - in_use;
borlanic 0:fbdae7e6d805 365 st->f_namemax = LFS_NAME_MAX;
borlanic 0:fbdae7e6d805 366 return 0;
borlanic 0:fbdae7e6d805 367 }
borlanic 0:fbdae7e6d805 368
borlanic 0:fbdae7e6d805 369 ////// File operations //////
borlanic 0:fbdae7e6d805 370 int LittleFileSystem::file_open(fs_file_t *file, const char *path, int flags)
borlanic 0:fbdae7e6d805 371 {
borlanic 0:fbdae7e6d805 372 lfs_file_t *f = new lfs_file_t;
borlanic 0:fbdae7e6d805 373 _mutex.lock();
borlanic 0:fbdae7e6d805 374 LFS_INFO("file_open(%p, \"%s\", 0x%x)", *file, path, flags);
borlanic 0:fbdae7e6d805 375 int err = lfs_file_open(&_lfs, f, path, lfs_fromflags(flags));
borlanic 0:fbdae7e6d805 376 LFS_INFO("file_open -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 377 _mutex.unlock();
borlanic 0:fbdae7e6d805 378 if (!err) {
borlanic 0:fbdae7e6d805 379 *file = f;
borlanic 0:fbdae7e6d805 380 } else {
borlanic 0:fbdae7e6d805 381 delete f;
borlanic 0:fbdae7e6d805 382 }
borlanic 0:fbdae7e6d805 383 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 384 }
borlanic 0:fbdae7e6d805 385
borlanic 0:fbdae7e6d805 386 int LittleFileSystem::file_close(fs_file_t file)
borlanic 0:fbdae7e6d805 387 {
borlanic 0:fbdae7e6d805 388 lfs_file_t *f = (lfs_file_t *)file;
borlanic 0:fbdae7e6d805 389 _mutex.lock();
borlanic 0:fbdae7e6d805 390 LFS_INFO("file_close(%p)", file);
borlanic 0:fbdae7e6d805 391 int err = lfs_file_close(&_lfs, f);
borlanic 0:fbdae7e6d805 392 LFS_INFO("file_close -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 393 _mutex.unlock();
borlanic 0:fbdae7e6d805 394 delete f;
borlanic 0:fbdae7e6d805 395 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 396 }
borlanic 0:fbdae7e6d805 397
borlanic 0:fbdae7e6d805 398 ssize_t LittleFileSystem::file_read(fs_file_t file, void *buffer, size_t len)
borlanic 0:fbdae7e6d805 399 {
borlanic 0:fbdae7e6d805 400 lfs_file_t *f = (lfs_file_t *)file;
borlanic 0:fbdae7e6d805 401 _mutex.lock();
borlanic 0:fbdae7e6d805 402 LFS_INFO("file_read(%p, %p, %d)", file, buffer, len);
borlanic 0:fbdae7e6d805 403 lfs_ssize_t res = lfs_file_read(&_lfs, f, buffer, len);
borlanic 0:fbdae7e6d805 404 LFS_INFO("file_read -> %d", lfs_toerror(res));
borlanic 0:fbdae7e6d805 405 _mutex.unlock();
borlanic 0:fbdae7e6d805 406 return lfs_toerror(res);
borlanic 0:fbdae7e6d805 407 }
borlanic 0:fbdae7e6d805 408
borlanic 0:fbdae7e6d805 409 ssize_t LittleFileSystem::file_write(fs_file_t file, const void *buffer, size_t len)
borlanic 0:fbdae7e6d805 410 {
borlanic 0:fbdae7e6d805 411 lfs_file_t *f = (lfs_file_t *)file;
borlanic 0:fbdae7e6d805 412 _mutex.lock();
borlanic 0:fbdae7e6d805 413 LFS_INFO("file_write(%p, %p, %d)", file, buffer, len);
borlanic 0:fbdae7e6d805 414 lfs_ssize_t res = lfs_file_write(&_lfs, f, buffer, len);
borlanic 0:fbdae7e6d805 415 LFS_INFO("file_write -> %d", lfs_toerror(res));
borlanic 0:fbdae7e6d805 416 _mutex.unlock();
borlanic 0:fbdae7e6d805 417 return lfs_toerror(res);
borlanic 0:fbdae7e6d805 418 }
borlanic 0:fbdae7e6d805 419
borlanic 0:fbdae7e6d805 420 int LittleFileSystem::file_sync(fs_file_t file)
borlanic 0:fbdae7e6d805 421 {
borlanic 0:fbdae7e6d805 422 lfs_file_t *f = (lfs_file_t *)file;
borlanic 0:fbdae7e6d805 423 _mutex.lock();
borlanic 0:fbdae7e6d805 424 LFS_INFO("file_sync(%p)", file);
borlanic 0:fbdae7e6d805 425 int err = lfs_file_sync(&_lfs, f);
borlanic 0:fbdae7e6d805 426 LFS_INFO("file_sync -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 427 _mutex.unlock();
borlanic 0:fbdae7e6d805 428 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 429 }
borlanic 0:fbdae7e6d805 430
borlanic 0:fbdae7e6d805 431 off_t LittleFileSystem::file_seek(fs_file_t file, off_t offset, int whence)
borlanic 0:fbdae7e6d805 432 {
borlanic 0:fbdae7e6d805 433 lfs_file_t *f = (lfs_file_t *)file;
borlanic 0:fbdae7e6d805 434 _mutex.lock();
borlanic 0:fbdae7e6d805 435 LFS_INFO("file_seek(%p, %ld, %d)", file, offset, whence);
borlanic 0:fbdae7e6d805 436 off_t res = lfs_file_seek(&_lfs, f, offset, lfs_fromwhence(whence));
borlanic 0:fbdae7e6d805 437 LFS_INFO("file_seek -> %d", lfs_toerror(res));
borlanic 0:fbdae7e6d805 438 _mutex.unlock();
borlanic 0:fbdae7e6d805 439 return lfs_toerror(res);
borlanic 0:fbdae7e6d805 440 }
borlanic 0:fbdae7e6d805 441
borlanic 0:fbdae7e6d805 442 off_t LittleFileSystem::file_tell(fs_file_t file)
borlanic 0:fbdae7e6d805 443 {
borlanic 0:fbdae7e6d805 444 lfs_file_t *f = (lfs_file_t *)file;
borlanic 0:fbdae7e6d805 445 _mutex.lock();
borlanic 0:fbdae7e6d805 446 LFS_INFO("file_tell(%p)", file);
borlanic 0:fbdae7e6d805 447 off_t res = lfs_file_tell(&_lfs, f);
borlanic 0:fbdae7e6d805 448 LFS_INFO("file_tell -> %d", lfs_toerror(res));
borlanic 0:fbdae7e6d805 449 _mutex.unlock();
borlanic 0:fbdae7e6d805 450 return lfs_toerror(res);
borlanic 0:fbdae7e6d805 451 }
borlanic 0:fbdae7e6d805 452
borlanic 0:fbdae7e6d805 453 off_t LittleFileSystem::file_size(fs_file_t file)
borlanic 0:fbdae7e6d805 454 {
borlanic 0:fbdae7e6d805 455 lfs_file_t *f = (lfs_file_t *)file;
borlanic 0:fbdae7e6d805 456 _mutex.lock();
borlanic 0:fbdae7e6d805 457 LFS_INFO("file_size(%p)", file);
borlanic 0:fbdae7e6d805 458 off_t res = lfs_file_size(&_lfs, f);
borlanic 0:fbdae7e6d805 459 LFS_INFO("file_size -> %d", lfs_toerror(res));
borlanic 0:fbdae7e6d805 460 _mutex.unlock();
borlanic 0:fbdae7e6d805 461 return lfs_toerror(res);
borlanic 0:fbdae7e6d805 462 }
borlanic 0:fbdae7e6d805 463
borlanic 0:fbdae7e6d805 464
borlanic 0:fbdae7e6d805 465 ////// Dir operations //////
borlanic 0:fbdae7e6d805 466 int LittleFileSystem::dir_open(fs_dir_t *dir, const char *path)
borlanic 0:fbdae7e6d805 467 {
borlanic 0:fbdae7e6d805 468 lfs_dir_t *d = new lfs_dir_t;
borlanic 0:fbdae7e6d805 469 _mutex.lock();
borlanic 0:fbdae7e6d805 470 LFS_INFO("dir_open(%p, \"%s\")", *dir, path);
borlanic 0:fbdae7e6d805 471 int err = lfs_dir_open(&_lfs, d, path);
borlanic 0:fbdae7e6d805 472 LFS_INFO("dir_open -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 473 _mutex.unlock();
borlanic 0:fbdae7e6d805 474 if (!err) {
borlanic 0:fbdae7e6d805 475 *dir = d;
borlanic 0:fbdae7e6d805 476 } else {
borlanic 0:fbdae7e6d805 477 delete d;
borlanic 0:fbdae7e6d805 478 }
borlanic 0:fbdae7e6d805 479 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 480 }
borlanic 0:fbdae7e6d805 481
borlanic 0:fbdae7e6d805 482 int LittleFileSystem::dir_close(fs_dir_t dir)
borlanic 0:fbdae7e6d805 483 {
borlanic 0:fbdae7e6d805 484 lfs_dir_t *d = (lfs_dir_t *)dir;
borlanic 0:fbdae7e6d805 485 _mutex.lock();
borlanic 0:fbdae7e6d805 486 LFS_INFO("dir_close(%p)", dir);
borlanic 0:fbdae7e6d805 487 int err = lfs_dir_close(&_lfs, d);
borlanic 0:fbdae7e6d805 488 LFS_INFO("dir_close -> %d", lfs_toerror(err));
borlanic 0:fbdae7e6d805 489 _mutex.unlock();
borlanic 0:fbdae7e6d805 490 delete d;
borlanic 0:fbdae7e6d805 491 return lfs_toerror(err);
borlanic 0:fbdae7e6d805 492 }
borlanic 0:fbdae7e6d805 493
borlanic 0:fbdae7e6d805 494 ssize_t LittleFileSystem::dir_read(fs_dir_t dir, struct dirent *ent)
borlanic 0:fbdae7e6d805 495 {
borlanic 0:fbdae7e6d805 496 lfs_dir_t *d = (lfs_dir_t *)dir;
borlanic 0:fbdae7e6d805 497 struct lfs_info info;
borlanic 0:fbdae7e6d805 498 _mutex.lock();
borlanic 0:fbdae7e6d805 499 LFS_INFO("dir_read(%p, %p)", dir, ent);
borlanic 0:fbdae7e6d805 500 int res = lfs_dir_read(&_lfs, d, &info);
borlanic 0:fbdae7e6d805 501 LFS_INFO("dir_read -> %d", lfs_toerror(res));
borlanic 0:fbdae7e6d805 502 _mutex.unlock();
borlanic 0:fbdae7e6d805 503 if (res == 1) {
borlanic 0:fbdae7e6d805 504 ent->d_type = lfs_totype(info.type);
borlanic 0:fbdae7e6d805 505 strcpy(ent->d_name, info.name);
borlanic 0:fbdae7e6d805 506 }
borlanic 0:fbdae7e6d805 507 return lfs_toerror(res);
borlanic 0:fbdae7e6d805 508 }
borlanic 0:fbdae7e6d805 509
borlanic 0:fbdae7e6d805 510 void LittleFileSystem::dir_seek(fs_dir_t dir, off_t offset)
borlanic 0:fbdae7e6d805 511 {
borlanic 0:fbdae7e6d805 512 lfs_dir_t *d = (lfs_dir_t *)dir;
borlanic 0:fbdae7e6d805 513 _mutex.lock();
borlanic 0:fbdae7e6d805 514 LFS_INFO("dir_seek(%p, %ld)", dir, offset);
borlanic 0:fbdae7e6d805 515 lfs_dir_seek(&_lfs, d, offset);
borlanic 0:fbdae7e6d805 516 LFS_INFO("dir_seek -> %s", "void");
borlanic 0:fbdae7e6d805 517 _mutex.unlock();
borlanic 0:fbdae7e6d805 518 }
borlanic 0:fbdae7e6d805 519
borlanic 0:fbdae7e6d805 520 off_t LittleFileSystem::dir_tell(fs_dir_t dir)
borlanic 0:fbdae7e6d805 521 {
borlanic 0:fbdae7e6d805 522 lfs_dir_t *d = (lfs_dir_t *)dir;
borlanic 0:fbdae7e6d805 523 _mutex.lock();
borlanic 0:fbdae7e6d805 524 LFS_INFO("dir_tell(%p)", dir);
borlanic 0:fbdae7e6d805 525 lfs_soff_t res = lfs_dir_tell(&_lfs, d);
borlanic 0:fbdae7e6d805 526 LFS_INFO("dir_tell -> %d", lfs_toerror(res));
borlanic 0:fbdae7e6d805 527 _mutex.unlock();
borlanic 0:fbdae7e6d805 528 return lfs_toerror(res);
borlanic 0:fbdae7e6d805 529 }
borlanic 0:fbdae7e6d805 530
borlanic 0:fbdae7e6d805 531 void LittleFileSystem::dir_rewind(fs_dir_t dir)
borlanic 0:fbdae7e6d805 532 {
borlanic 0:fbdae7e6d805 533 lfs_dir_t *d = (lfs_dir_t *)dir;
borlanic 0:fbdae7e6d805 534 _mutex.lock();
borlanic 0:fbdae7e6d805 535 LFS_INFO("dir_rewind(%p)", dir);
borlanic 0:fbdae7e6d805 536 lfs_dir_rewind(&_lfs, d);
borlanic 0:fbdae7e6d805 537 LFS_INFO("dir_rewind -> %s", "void");
borlanic 0:fbdae7e6d805 538 _mutex.unlock();
borlanic 0:fbdae7e6d805 539 }
borlanic 0:fbdae7e6d805 540