unleashed-firmware/applications/storage/storages/storage-int.c
あく 5209701add
[FL-1991] Rewrite flash driver (#813)
* Toolbox: fix null pointer dereference in manchester decoder.
* FuriHal: use MPU to protect from null pointer dereference, replace flash driver with our own implementation.
2021-11-10 12:53:00 +03:00

690 lines
No EOL
21 KiB
C

#include "storage-int.h"
#include <lfs.h>
#include <furi-hal.h>
#define TAG "storage-int"
#define STORAGE_PATH "/int"
typedef struct {
const size_t start_address;
const size_t start_page;
struct lfs_config config;
lfs_t lfs;
} LFSData;
typedef struct {
void* data;
bool open;
} LFSHandle;
static LFSHandle* lfs_handle_alloc_file() {
LFSHandle* handle = furi_alloc(sizeof(LFSHandle));
handle->data = furi_alloc(sizeof(lfs_file_t));
return handle;
}
static LFSHandle* lfs_handle_alloc_dir() {
LFSHandle* handle = furi_alloc(sizeof(LFSHandle));
handle->data = furi_alloc(sizeof(lfs_dir_t));
return handle;
}
/* INTERNALS */
static lfs_dir_t* lfs_handle_get_dir(LFSHandle* handle) {
return handle->data;
}
static lfs_file_t* lfs_handle_get_file(LFSHandle* handle) {
return handle->data;
}
static void lfs_handle_free(LFSHandle* handle) {
free(handle->data);
free(handle);
}
static void lfs_handle_set_open(LFSHandle* handle) {
handle->open = true;
}
static bool lfs_handle_is_open(LFSHandle* handle) {
return handle->open;
}
static lfs_t* lfs_get_from_storage(StorageData* storage) {
return &((LFSData*)storage->data)->lfs;
}
static LFSData* lfs_data_get_from_storage(StorageData* storage) {
return (LFSData*)storage->data;
}
static int storage_int_device_read(
const struct lfs_config* c,
lfs_block_t block,
lfs_off_t off,
void* buffer,
lfs_size_t size) {
LFSData* lfs_data = c->context;
size_t address = lfs_data->start_address + block * c->block_size + off;
FURI_LOG_D(
TAG,
"Device read: block %d, off %d, buffer: %p, size %d, translated address: %p",
block,
off,
buffer,
size,
address);
memcpy(buffer, (void*)address, size);
return 0;
}
static int storage_int_device_prog(
const struct lfs_config* c,
lfs_block_t block,
lfs_off_t off,
const void* buffer,
lfs_size_t size) {
LFSData* lfs_data = c->context;
size_t address = lfs_data->start_address + block * c->block_size + off;
FURI_LOG_D(
TAG,
"Device prog: block %d, off %d, buffer: %p, size %d, translated address: %p",
block,
off,
buffer,
size,
address);
int ret = 0;
while(size > 0) {
if(!furi_hal_flash_write_dword(address, *(uint64_t*)buffer)) {
ret = -1;
break;
}
address += c->prog_size;
buffer += c->prog_size;
size -= c->prog_size;
}
return ret;
}
static int storage_int_device_erase(const struct lfs_config* c, lfs_block_t block) {
LFSData* lfs_data = c->context;
size_t page = lfs_data->start_page + block;
FURI_LOG_D(TAG, "Device erase: page %d, translated page: %x", block, page);
if(furi_hal_flash_erase(page)) {
return 0;
} else {
return -1;
}
}
static int storage_int_device_sync(const struct lfs_config* c) {
FURI_LOG_D(TAG, "Device sync: skipping, cause ");
return 0;
}
static LFSData* storage_int_lfs_data_alloc() {
LFSData* lfs_data = furi_alloc(sizeof(LFSData));
// Internal storage start address
*(size_t*)(&lfs_data->start_address) = furi_hal_flash_get_free_page_start_address();
*(size_t*)(&lfs_data->start_page) =
(lfs_data->start_address - furi_hal_flash_get_base()) / furi_hal_flash_get_page_size();
// LFS configuration
// Glue and context
lfs_data->config.context = lfs_data;
lfs_data->config.read = storage_int_device_read;
lfs_data->config.prog = storage_int_device_prog;
lfs_data->config.erase = storage_int_device_erase;
lfs_data->config.sync = storage_int_device_sync;
// Block device description
lfs_data->config.read_size = furi_hal_flash_get_read_block_size();
lfs_data->config.prog_size = furi_hal_flash_get_write_block_size();
lfs_data->config.block_size = furi_hal_flash_get_page_size();
lfs_data->config.block_count = furi_hal_flash_get_free_page_count();
lfs_data->config.block_cycles = furi_hal_flash_get_cycles_count();
lfs_data->config.cache_size = 16;
lfs_data->config.lookahead_size = 16;
return lfs_data;
};
static void storage_int_lfs_mount(LFSData* lfs_data, StorageData* storage) {
int err;
FuriHalBootloaderFlag bootloader_flags = furi_hal_bootloader_get_flags();
lfs_t* lfs = &lfs_data->lfs;
if(bootloader_flags & FuriHalBootloaderFlagFactoryReset) {
// Factory reset
err = lfs_format(lfs, &lfs_data->config);
if(err == 0) {
FURI_LOG_I(TAG, "Factory reset: Format successful, trying to mount");
furi_hal_bootloader_set_flags(bootloader_flags & ~FuriHalBootloaderFlagFactoryReset);
err = lfs_mount(lfs, &lfs_data->config);
if(err == 0) {
FURI_LOG_I(TAG, "Factory reset: Mounted");
storage->status = StorageStatusOK;
} else {
FURI_LOG_E(TAG, "Factory reset: Mount after format failed");
storage->status = StorageStatusNotMounted;
}
} else {
FURI_LOG_E(TAG, "Factory reset: Format failed");
storage->status = StorageStatusNoFS;
}
} else {
// Normal
err = lfs_mount(lfs, &lfs_data->config);
if(err == 0) {
FURI_LOG_I(TAG, "Mounted");
storage->status = StorageStatusOK;
} else {
FURI_LOG_E(TAG, "Mount failed, formatting");
err = lfs_format(lfs, &lfs_data->config);
if(err == 0) {
FURI_LOG_I(TAG, "Format successful, trying to mount");
err = lfs_mount(lfs, &lfs_data->config);
if(err == 0) {
FURI_LOG_I(TAG, "Mounted");
storage->status = StorageStatusOK;
} else {
FURI_LOG_E(TAG, "Mount after format failed");
storage->status = StorageStatusNotMounted;
}
} else {
FURI_LOG_E(TAG, "Format failed");
storage->status = StorageStatusNoFS;
}
}
}
}
/****************** Common Functions ******************/
static FS_Error storage_int_parse_error(int error) {
FS_Error result = FSE_INTERNAL;
if(error >= LFS_ERR_OK) {
result = FSE_OK;
} else {
switch(error) {
case LFS_ERR_IO:
result = FSE_INTERNAL;
break;
case LFS_ERR_CORRUPT:
result = FSE_INTERNAL;
break;
case LFS_ERR_NOENT:
result = FSE_NOT_EXIST;
break;
case LFS_ERR_EXIST:
result = FSE_EXIST;
break;
case LFS_ERR_NOTDIR:
result = FSE_INVALID_NAME;
break;
case LFS_ERR_ISDIR:
result = FSE_INVALID_NAME;
break;
case LFS_ERR_NOTEMPTY:
result = FSE_DENIED;
break;
case LFS_ERR_BADF:
result = FSE_INVALID_NAME;
break;
case LFS_ERR_FBIG:
result = FSE_INTERNAL;
break;
case LFS_ERR_INVAL:
result = FSE_INVALID_PARAMETER;
break;
case LFS_ERR_NOSPC:
result = FSE_INTERNAL;
break;
case LFS_ERR_NOMEM:
result = FSE_INTERNAL;
break;
case LFS_ERR_NOATTR:
result = FSE_INVALID_PARAMETER;
break;
case LFS_ERR_NAMETOOLONG:
result = FSE_INVALID_NAME;
break;
default:
break;
}
}
return result;
}
/******************* File Functions *******************/
static bool storage_int_file_open(
void* ctx,
File* file,
const char* path,
FS_AccessMode access_mode,
FS_OpenMode open_mode) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
int flags = 0;
if(access_mode & FSAM_READ) flags |= LFS_O_RDONLY;
if(access_mode & FSAM_WRITE) flags |= LFS_O_WRONLY;
if(open_mode & FSOM_OPEN_EXISTING) flags |= 0;
if(open_mode & FSOM_OPEN_ALWAYS) flags |= LFS_O_CREAT;
if(open_mode & FSOM_OPEN_APPEND) flags |= LFS_O_CREAT | LFS_O_APPEND;
if(open_mode & FSOM_CREATE_NEW) flags |= LFS_O_CREAT | LFS_O_EXCL;
if(open_mode & FSOM_CREATE_ALWAYS) flags |= LFS_O_CREAT | LFS_O_TRUNC;
LFSHandle* handle = lfs_handle_alloc_file();
storage_set_storage_file_data(file, handle, storage);
file->internal_error_id = lfs_file_open(lfs, lfs_handle_get_file(handle), path, flags);
if(file->internal_error_id >= LFS_ERR_OK) {
lfs_handle_set_open(handle);
}
file->error_id = storage_int_parse_error(file->internal_error_id);
return (file->error_id == FSE_OK);
}
static bool storage_int_file_close(void* ctx, File* file) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
file->internal_error_id = lfs_file_close(lfs, lfs_handle_get_file(handle));
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
lfs_handle_free(handle);
return (file->error_id == FSE_OK);
}
static uint16_t
storage_int_file_read(void* ctx, File* file, void* buff, uint16_t const bytes_to_read) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
uint16_t bytes_readed = 0;
if(lfs_handle_is_open(handle)) {
file->internal_error_id =
lfs_file_read(lfs, lfs_handle_get_file(handle), buff, bytes_to_read);
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
if(file->error_id == FSE_OK) {
bytes_readed = file->internal_error_id;
file->internal_error_id = 0;
}
return bytes_readed;
}
static uint16_t
storage_int_file_write(void* ctx, File* file, const void* buff, uint16_t const bytes_to_write) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
uint16_t bytes_written = 0;
if(lfs_handle_is_open(handle)) {
file->internal_error_id =
lfs_file_write(lfs, lfs_handle_get_file(handle), buff, bytes_to_write);
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
if(file->error_id == FSE_OK) {
bytes_written = file->internal_error_id;
file->internal_error_id = 0;
}
return bytes_written;
}
static bool
storage_int_file_seek(void* ctx, File* file, const uint32_t offset, const bool from_start) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
if(from_start) {
file->internal_error_id =
lfs_file_seek(lfs, lfs_handle_get_file(handle), offset, LFS_SEEK_SET);
} else {
file->internal_error_id =
lfs_file_seek(lfs, lfs_handle_get_file(handle), offset, LFS_SEEK_CUR);
}
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
return (file->error_id == FSE_OK);
}
static uint64_t storage_int_file_tell(void* ctx, File* file) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
file->internal_error_id = lfs_file_tell(lfs, lfs_handle_get_file(handle));
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
int32_t position = 0;
if(file->error_id == FSE_OK) {
position = file->internal_error_id;
file->internal_error_id = 0;
}
return position;
}
static bool storage_int_file_truncate(void* ctx, File* file) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
file->internal_error_id = lfs_file_tell(lfs, lfs_handle_get_file(handle));
file->error_id = storage_int_parse_error(file->internal_error_id);
if(file->error_id == FSE_OK) {
uint32_t position = file->internal_error_id;
file->internal_error_id =
lfs_file_truncate(lfs, lfs_handle_get_file(handle), position);
file->error_id = storage_int_parse_error(file->internal_error_id);
}
} else {
file->internal_error_id = LFS_ERR_BADF;
file->error_id = storage_int_parse_error(file->internal_error_id);
}
return (file->error_id == FSE_OK);
}
static bool storage_int_file_sync(void* ctx, File* file) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
file->internal_error_id = lfs_file_sync(lfs, lfs_handle_get_file(handle));
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
return (file->error_id == FSE_OK);
}
static uint64_t storage_int_file_size(void* ctx, File* file) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
file->internal_error_id = lfs_file_size(lfs, lfs_handle_get_file(handle));
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
uint32_t size = 0;
if(file->error_id == FSE_OK) {
size = file->internal_error_id;
file->internal_error_id = 0;
}
return size;
}
static bool storage_int_file_eof(void* ctx, File* file) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
bool eof = true;
if(lfs_handle_is_open(handle)) {
int32_t position = lfs_file_tell(lfs, lfs_handle_get_file(handle));
int32_t size = lfs_file_size(lfs, lfs_handle_get_file(handle));
if(position < 0) {
file->internal_error_id = position;
} else if(size < 0) {
file->internal_error_id = size;
} else {
file->internal_error_id = LFS_ERR_OK;
eof = (position >= size);
}
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
return eof;
}
/******************* Dir Functions *******************/
static bool storage_int_dir_open(void* ctx, File* file, const char* path) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = lfs_handle_alloc_dir();
storage_set_storage_file_data(file, handle, storage);
file->internal_error_id = lfs_dir_open(lfs, lfs_handle_get_dir(handle), path);
if(file->internal_error_id >= LFS_ERR_OK) {
lfs_handle_set_open(handle);
}
file->error_id = storage_int_parse_error(file->internal_error_id);
return (file->error_id == FSE_OK);
}
static bool storage_int_dir_close(void* ctx, File* file) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
file->internal_error_id = lfs_dir_close(lfs, lfs_handle_get_dir(handle));
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
lfs_handle_free(handle);
return (file->error_id == FSE_OK);
}
static bool storage_int_dir_read(
void* ctx,
File* file,
FileInfo* fileinfo,
char* name,
const uint16_t name_length) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
struct lfs_info _fileinfo;
// LFS returns virtual directories "." and "..", so we read until we get something meaningful or an empty string
do {
file->internal_error_id = lfs_dir_read(lfs, lfs_handle_get_dir(handle), &_fileinfo);
file->error_id = storage_int_parse_error(file->internal_error_id);
} while(strcmp(_fileinfo.name, ".") == 0 || strcmp(_fileinfo.name, "..") == 0);
if(fileinfo != NULL) {
fileinfo->size = _fileinfo.size;
fileinfo->flags = 0;
if(_fileinfo.type & LFS_TYPE_DIR) fileinfo->flags |= FSF_DIRECTORY;
}
if(name != NULL) {
snprintf(name, name_length, "%s", _fileinfo.name);
}
// set FSE_NOT_EXIST error on end of directory
if(file->internal_error_id == 0) {
file->error_id = FSE_NOT_EXIST;
}
} else {
file->internal_error_id = LFS_ERR_BADF;
file->error_id = storage_int_parse_error(file->internal_error_id);
}
return (file->error_id == FSE_OK);
}
static bool storage_int_dir_rewind(void* ctx, File* file) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSHandle* handle = storage_get_storage_file_data(file, storage);
if(lfs_handle_is_open(handle)) {
file->internal_error_id = lfs_dir_rewind(lfs, lfs_handle_get_dir(handle));
} else {
file->internal_error_id = LFS_ERR_BADF;
}
file->error_id = storage_int_parse_error(file->internal_error_id);
return (file->error_id == FSE_OK);
}
/******************* Common FS Functions *******************/
static FS_Error storage_int_common_stat(void* ctx, const char* path, FileInfo* fileinfo) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
struct lfs_info _fileinfo;
int result = lfs_stat(lfs, path, &_fileinfo);
if(fileinfo != NULL) {
fileinfo->size = _fileinfo.size;
fileinfo->flags = 0;
if(_fileinfo.type & LFS_TYPE_DIR) fileinfo->flags |= FSF_DIRECTORY;
}
return storage_int_parse_error(result);
}
static FS_Error storage_int_common_remove(void* ctx, const char* path) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
int result = lfs_remove(lfs, path);
return storage_int_parse_error(result);
}
static FS_Error storage_int_common_rename(void* ctx, const char* old_path, const char* new_path) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
int result = lfs_rename(lfs, old_path, new_path);
return storage_int_parse_error(result);
}
static FS_Error storage_int_common_mkdir(void* ctx, const char* path) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
int result = lfs_mkdir(lfs, path);
return storage_int_parse_error(result);
}
static FS_Error storage_int_common_fs_info(
void* ctx,
const char* fs_path,
uint64_t* total_space,
uint64_t* free_space) {
StorageData* storage = ctx;
lfs_t* lfs = lfs_get_from_storage(storage);
LFSData* lfs_data = lfs_data_get_from_storage(storage);
*total_space = lfs_data->config.block_size * lfs_data->config.block_count;
lfs_ssize_t result = lfs_fs_size(lfs);
if(result >= 0) {
*free_space = *total_space - (result * lfs_data->config.block_size);
}
return storage_int_parse_error(result);
}
/******************* Init Storage *******************/
void storage_int_init(StorageData* storage) {
FURI_LOG_I(TAG, "Starting");
LFSData* lfs_data = storage_int_lfs_data_alloc();
FURI_LOG_I(
TAG,
"Config: start %p, read %d, write %d, page size: %d, page count: %d, cycles: %d",
lfs_data->start_address,
lfs_data->config.read_size,
lfs_data->config.prog_size,
lfs_data->config.block_size,
lfs_data->config.block_count,
lfs_data->config.block_cycles);
storage_int_lfs_mount(lfs_data, storage);
storage->data = lfs_data;
storage->api.tick = NULL;
storage->fs_api.file.open = storage_int_file_open;
storage->fs_api.file.close = storage_int_file_close;
storage->fs_api.file.read = storage_int_file_read;
storage->fs_api.file.write = storage_int_file_write;
storage->fs_api.file.seek = storage_int_file_seek;
storage->fs_api.file.tell = storage_int_file_tell;
storage->fs_api.file.truncate = storage_int_file_truncate;
storage->fs_api.file.size = storage_int_file_size;
storage->fs_api.file.sync = storage_int_file_sync;
storage->fs_api.file.eof = storage_int_file_eof;
storage->fs_api.dir.open = storage_int_dir_open;
storage->fs_api.dir.close = storage_int_dir_close;
storage->fs_api.dir.read = storage_int_dir_read;
storage->fs_api.dir.rewind = storage_int_dir_rewind;
storage->fs_api.common.stat = storage_int_common_stat;
storage->fs_api.common.mkdir = storage_int_common_mkdir;
storage->fs_api.common.rename = storage_int_common_rename;
storage->fs_api.common.remove = storage_int_common_remove;
storage->fs_api.common.fs_info = storage_int_common_fs_info;
}