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unleashed-firmware/applications/storage/storage_external_api.c
hedger 056446dfed
[FL-2675] /int space reservation (#1448) 
* storage: added global #defines for /int, /ext & /any
* storage: introduced PATH_EXT, PATH_INT& PATH_ANY macros
* core apps: moved hardcoded config files names to separate headers; prefixed them with "."; updater: added file name migration to new naming convention on backup extraction
* storage: fixed storage_merge_recursive handling of complex directory structures; storage_move_to_sd: changed data migration logic to all non-dot files & all folders
* core: added macro aliases for core record names
* Bumped protobuf commit pointer
* storage: reserved 5 pages in /int; denying write&creation of non-dot files when running out of free space

Co-authored-by: あく <alleteam@gmail.com>
2022-07-26 21:21:51 +09:00

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#include <core/log.h>
#include <core/record.h>
#include <m-string.h>
#include "storage.h"
#include "storage_i.h"
#include "storage_message.h"
#include <toolbox/stream/file_stream.h>
#include <toolbox/dir_walk.h>
#include "toolbox/path.h"
#define MAX_NAME_LENGTH 256
#define MAX_EXT_LEN 16
#define TAG "StorageAPI"
#define S_API_PROLOGUE \
FuriSemaphore* semaphore = furi_semaphore_alloc(1, 0); \
furi_check(semaphore != NULL);
#define S_FILE_API_PROLOGUE \
Storage* storage = file->storage; \
furi_assert(storage);
#define S_API_EPILOGUE \
furi_check( \
furi_message_queue_put(storage->message_queue, &message, FuriWaitForever) == \
FuriStatusOk); \
furi_semaphore_acquire(semaphore, FuriWaitForever); \
furi_semaphore_free(semaphore);
#define S_API_MESSAGE(_command) \
SAReturn return_data; \
StorageMessage message = { \
.semaphore = semaphore, \
.command = _command, \
.data = &data, \
.return_data = &return_data, \
};
#define S_API_DATA_FILE \
SAData data = { \
.file = { \
.file = file, \
}};
#define S_API_DATA_PATH \
SAData data = { \
.path = { \
.path = path, \
}};
#define S_RETURN_BOOL (return_data.bool_value);
#define S_RETURN_UINT16 (return_data.uint16_value);
#define S_RETURN_UINT64 (return_data.uint64_value);
#define S_RETURN_ERROR (return_data.error_value);
#define S_RETURN_CSTRING (return_data.cstring_value);
typedef enum {
StorageEventFlagFileClose = (1 << 0),
} StorageEventFlag;
/****************** FILE ******************/
static bool storage_file_open_internal(
File* file,
const char* path,
FS_AccessMode access_mode,
FS_OpenMode open_mode) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
SAData data = {
.fopen = {
.file = file,
.path = path,
.access_mode = access_mode,
.open_mode = open_mode,
}};
file->type = FileTypeOpenFile;
S_API_MESSAGE(StorageCommandFileOpen);
S_API_EPILOGUE;
return S_RETURN_BOOL;
}
static void storage_file_close_callback(const void* message, void* context) {
const StorageEvent* storage_event = message;
if(storage_event->type == StorageEventTypeFileClose ||
storage_event->type == StorageEventTypeDirClose) {
furi_assert(context);
FuriEventFlag* event = context;
furi_event_flag_set(event, StorageEventFlagFileClose);
}
}
bool storage_file_open(
File* file,
const char* path,
FS_AccessMode access_mode,
FS_OpenMode open_mode) {
bool result;
FuriEventFlag* event = furi_event_flag_alloc();
FuriPubSubSubscription* subscription = furi_pubsub_subscribe(
storage_get_pubsub(file->storage), storage_file_close_callback, event);
do {
result = storage_file_open_internal(file, path, access_mode, open_mode);
if(!result && file->error_id == FSE_ALREADY_OPEN) {
furi_event_flag_wait(
event, StorageEventFlagFileClose, FuriFlagWaitAny, FuriWaitForever);
} else {
break;
}
} while(true);
furi_pubsub_unsubscribe(storage_get_pubsub(file->storage), subscription);
furi_event_flag_free(event);
FURI_LOG_T(
TAG, "File %p - %p open (%s)", (uint32_t)file - SRAM_BASE, file->file_id - SRAM_BASE, path);
return result;
}
bool storage_file_close(File* file) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
S_API_DATA_FILE;
S_API_MESSAGE(StorageCommandFileClose);
S_API_EPILOGUE;
FURI_LOG_T(TAG, "File %p - %p closed", (uint32_t)file - SRAM_BASE, file->file_id - SRAM_BASE);
file->type = FileTypeClosed;
return S_RETURN_BOOL;
}
uint16_t storage_file_read(File* file, void* buff, uint16_t bytes_to_read) {
if(bytes_to_read == 0) {
return 0;
}
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
SAData data = {
.fread = {
.file = file,
.buff = buff,
.bytes_to_read = bytes_to_read,
}};
S_API_MESSAGE(StorageCommandFileRead);
S_API_EPILOGUE;
return S_RETURN_UINT16;
}
uint16_t storage_file_write(File* file, const void* buff, uint16_t bytes_to_write) {
if(bytes_to_write == 0) {
return 0;
}
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
SAData data = {
.fwrite = {
.file = file,
.buff = buff,
.bytes_to_write = bytes_to_write,
}};
S_API_MESSAGE(StorageCommandFileWrite);
S_API_EPILOGUE;
return S_RETURN_UINT16;
}
bool storage_file_seek(File* file, uint32_t offset, bool from_start) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
SAData data = {
.fseek = {
.file = file,
.offset = offset,
.from_start = from_start,
}};
S_API_MESSAGE(StorageCommandFileSeek);
S_API_EPILOGUE;
return S_RETURN_BOOL;
}
uint64_t storage_file_tell(File* file) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
S_API_DATA_FILE;
S_API_MESSAGE(StorageCommandFileTell);
S_API_EPILOGUE;
return S_RETURN_UINT64;
}
bool storage_file_truncate(File* file) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
S_API_DATA_FILE;
S_API_MESSAGE(StorageCommandFileTruncate);
S_API_EPILOGUE;
return S_RETURN_BOOL;
}
uint64_t storage_file_size(File* file) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
S_API_DATA_FILE;
S_API_MESSAGE(StorageCommandFileSize);
S_API_EPILOGUE;
return S_RETURN_UINT64;
}
bool storage_file_sync(File* file) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
S_API_DATA_FILE;
S_API_MESSAGE(StorageCommandFileSync);
S_API_EPILOGUE;
return S_RETURN_BOOL;
}
bool storage_file_eof(File* file) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
S_API_DATA_FILE;
S_API_MESSAGE(StorageCommandFileEof);
S_API_EPILOGUE;
return S_RETURN_BOOL;
}
/****************** DIR ******************/
static bool storage_dir_open_internal(File* file, const char* path) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
SAData data = {
.dopen = {
.file = file,
.path = path,
}};
file->type = FileTypeOpenDir;
S_API_MESSAGE(StorageCommandDirOpen);
S_API_EPILOGUE;
return S_RETURN_BOOL;
}
bool storage_dir_open(File* file, const char* path) {
bool result;
FuriEventFlag* event = furi_event_flag_alloc();
FuriPubSubSubscription* subscription = furi_pubsub_subscribe(
storage_get_pubsub(file->storage), storage_file_close_callback, event);
do {
result = storage_dir_open_internal(file, path);
if(!result && file->error_id == FSE_ALREADY_OPEN) {
furi_event_flag_wait(
event, StorageEventFlagFileClose, FuriFlagWaitAny, FuriWaitForever);
} else {
break;
}
} while(true);
furi_pubsub_unsubscribe(storage_get_pubsub(file->storage), subscription);
furi_event_flag_free(event);
FURI_LOG_T(
TAG, "Dir %p - %p open (%s)", (uint32_t)file - SRAM_BASE, file->file_id - SRAM_BASE, path);
return result;
}
bool storage_dir_close(File* file) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
S_API_DATA_FILE;
S_API_MESSAGE(StorageCommandDirClose);
S_API_EPILOGUE;
FURI_LOG_T(TAG, "Dir %p - %p closed", (uint32_t)file - SRAM_BASE, file->file_id - SRAM_BASE);
file->type = FileTypeClosed;
return S_RETURN_BOOL;
}
bool storage_dir_read(File* file, FileInfo* fileinfo, char* name, uint16_t name_length) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
SAData data = {
.dread = {
.file = file,
.fileinfo = fileinfo,
.name = name,
.name_length = name_length,
}};
S_API_MESSAGE(StorageCommandDirRead);
S_API_EPILOGUE;
return S_RETURN_BOOL;
}
bool storage_dir_rewind(File* file) {
S_FILE_API_PROLOGUE;
S_API_PROLOGUE;
S_API_DATA_FILE;
S_API_MESSAGE(StorageCommandDirRewind);
S_API_EPILOGUE;
return S_RETURN_BOOL;
}
/****************** COMMON ******************/
FS_Error storage_common_stat(Storage* storage, const char* path, FileInfo* fileinfo) {
S_API_PROLOGUE;
SAData data = {.cstat = {.path = path, .fileinfo = fileinfo}};
S_API_MESSAGE(StorageCommandCommonStat);
S_API_EPILOGUE;
return S_RETURN_ERROR;
}
FS_Error storage_common_remove(Storage* storage, const char* path) {
S_API_PROLOGUE;
S_API_DATA_PATH;
S_API_MESSAGE(StorageCommandCommonRemove);
S_API_EPILOGUE;
return S_RETURN_ERROR;
}
FS_Error storage_common_rename(Storage* storage, const char* old_path, const char* new_path) {
FS_Error error = storage_common_copy(storage, old_path, new_path);
if(error == FSE_OK) {
if(storage_simply_remove_recursive(storage, old_path)) {
error = FSE_OK;
} else {
error = FSE_INTERNAL;
}
}
return error;
}
static FS_Error
storage_copy_recursive(Storage* storage, const char* old_path, const char* new_path) {
FS_Error error = storage_common_mkdir(storage, new_path);
DirWalk* dir_walk = dir_walk_alloc(storage);
string_t path;
string_t tmp_new_path;
string_t tmp_old_path;
FileInfo fileinfo;
string_init(path);
string_init(tmp_new_path);
string_init(tmp_old_path);
do {
if(error != FSE_OK) break;
if(!dir_walk_open(dir_walk, old_path)) {
error = dir_walk_get_error(dir_walk);
break;
}
while(1) {
DirWalkResult res = dir_walk_read(dir_walk, path, &fileinfo);
if(res == DirWalkError) {
error = dir_walk_get_error(dir_walk);
break;
} else if(res == DirWalkLast) {
break;
} else {
string_set(tmp_old_path, path);
string_right(path, strlen(old_path));
string_printf(tmp_new_path, "%s%s", new_path, string_get_cstr(path));
if(fileinfo.flags & FSF_DIRECTORY) {
error = storage_common_mkdir(storage, string_get_cstr(tmp_new_path));
} else {
error = storage_common_copy(
storage, string_get_cstr(tmp_old_path), string_get_cstr(tmp_new_path));
}
if(error != FSE_OK) break;
}
}
} while(false);
string_clear(tmp_new_path);
string_clear(tmp_old_path);
string_clear(path);
dir_walk_free(dir_walk);
return error;
}
FS_Error storage_common_copy(Storage* storage, const char* old_path, const char* new_path) {
FS_Error error;
FileInfo fileinfo;
error = storage_common_stat(storage, old_path, &fileinfo);
if(error == FSE_OK) {
if(fileinfo.flags & FSF_DIRECTORY) {
error = storage_copy_recursive(storage, old_path, new_path);
} else {
Stream* stream_from = file_stream_alloc(storage);
Stream* stream_to = file_stream_alloc(storage);
do {
if(!file_stream_open(stream_from, old_path, FSAM_READ, FSOM_OPEN_EXISTING)) break;
if(!file_stream_open(stream_to, new_path, FSAM_WRITE, FSOM_CREATE_NEW)) break;
stream_copy_full(stream_from, stream_to);
} while(false);
error = file_stream_get_error(stream_from);
if(error == FSE_OK) {
error = file_stream_get_error(stream_to);
}
stream_free(stream_from);
stream_free(stream_to);
}
}
return error;
}
static FS_Error
storage_merge_recursive(Storage* storage, const char* old_path, const char* new_path) {
FS_Error error = storage_common_mkdir(storage, new_path);
DirWalk* dir_walk = dir_walk_alloc(storage);
string_t path, file_basename, tmp_new_path;
FileInfo fileinfo;
string_init(path);
string_init(file_basename);
string_init(tmp_new_path);
do {
if((error != FSE_OK) && (error != FSE_EXIST)) break;
dir_walk_set_recursive(dir_walk, false);
if(!dir_walk_open(dir_walk, old_path)) {
error = dir_walk_get_error(dir_walk);
break;
}
while(1) {
DirWalkResult res = dir_walk_read(dir_walk, path, &fileinfo);
if(res == DirWalkError) {
error = dir_walk_get_error(dir_walk);
break;
} else if(res == DirWalkLast) {
break;
} else {
path_extract_basename(string_get_cstr(path), file_basename);
path_concat(new_path, string_get_cstr(file_basename), tmp_new_path);
if(fileinfo.flags & FSF_DIRECTORY) {
if(storage_common_stat(storage, string_get_cstr(tmp_new_path), &fileinfo) ==
FSE_OK) {
if(fileinfo.flags & FSF_DIRECTORY) {
error = storage_common_mkdir(storage, string_get_cstr(tmp_new_path));
if(error != FSE_OK) {
break;
}
}
}
}
error = storage_common_merge(
storage, string_get_cstr(path), string_get_cstr(tmp_new_path));
if(error != FSE_OK) {
break;
}
}
}
} while(false);
string_clear(tmp_new_path);
string_clear(file_basename);
string_clear(path);
dir_walk_free(dir_walk);
return error;
}
FS_Error storage_common_merge(Storage* storage, const char* old_path, const char* new_path) {
FS_Error error;
const char* new_path_tmp;
string_t new_path_next;
string_init(new_path_next);
FileInfo fileinfo;
error = storage_common_stat(storage, old_path, &fileinfo);
if(error == FSE_OK) {
if(fileinfo.flags & FSF_DIRECTORY) {
error = storage_merge_recursive(storage, old_path, new_path);
} else {
error = storage_common_stat(storage, new_path, &fileinfo);
if(error == FSE_OK) {
string_set_str(new_path_next, new_path);
string_t dir_path;
string_t filename;
char extension[MAX_EXT_LEN];
string_init(dir_path);
string_init(filename);
path_extract_filename(new_path_next, filename, true);
path_extract_dirname(new_path, dir_path);
path_extract_extension(new_path_next, extension, MAX_EXT_LEN);
storage_get_next_filename(
storage,
string_get_cstr(dir_path),
string_get_cstr(filename),
extension,
new_path_next,
255);
string_cat_printf(dir_path, "/%s%s", string_get_cstr(new_path_next), extension);
string_set(new_path_next, dir_path);
string_clear(dir_path);
string_clear(filename);
new_path_tmp = string_get_cstr(new_path_next);
} else {
new_path_tmp = new_path;
}
Stream* stream_from = file_stream_alloc(storage);
Stream* stream_to = file_stream_alloc(storage);
do {
if(!file_stream_open(stream_from, old_path, FSAM_READ, FSOM_OPEN_EXISTING)) break;
if(!file_stream_open(stream_to, new_path_tmp, FSAM_WRITE, FSOM_CREATE_NEW)) break;
stream_copy_full(stream_from, stream_to);
} while(false);
error = file_stream_get_error(stream_from);
if(error == FSE_OK) {
error = file_stream_get_error(stream_to);
}
stream_free(stream_from);
stream_free(stream_to);
}
}
string_clear(new_path_next);
return error;
}
FS_Error storage_common_mkdir(Storage* storage, const char* path) {
S_API_PROLOGUE;
S_API_DATA_PATH;
S_API_MESSAGE(StorageCommandCommonMkDir);
S_API_EPILOGUE;
return S_RETURN_ERROR;
}
FS_Error storage_common_fs_info(
Storage* storage,
const char* fs_path,
uint64_t* total_space,
uint64_t* free_space) {
S_API_PROLOGUE;
SAData data = {
.cfsinfo = {
.fs_path = fs_path,
.total_space = total_space,
.free_space = free_space,
}};
S_API_MESSAGE(StorageCommandCommonFSInfo);
S_API_EPILOGUE;
return S_RETURN_ERROR;
}
/****************** ERROR ******************/
const char* storage_error_get_desc(FS_Error error_id) {
return filesystem_api_error_get_desc(error_id);
}
FS_Error storage_file_get_error(File* file) {
furi_check(file != NULL);
return file->error_id;
}
int32_t storage_file_get_internal_error(File* file) {
furi_check(file != NULL);
return file->internal_error_id;
}
const char* storage_file_get_error_desc(File* file) {
furi_check(file != NULL);
return filesystem_api_error_get_desc(file->error_id);
}
/****************** Raw SD API ******************/
FS_Error storage_sd_format(Storage* storage) {
S_API_PROLOGUE;
SAData data = {};
S_API_MESSAGE(StorageCommandSDFormat);
S_API_EPILOGUE;
return S_RETURN_ERROR;
}
FS_Error storage_sd_unmount(Storage* storage) {
S_API_PROLOGUE;
SAData data = {};
S_API_MESSAGE(StorageCommandSDUnmount);
S_API_EPILOGUE;
return S_RETURN_ERROR;
}
FS_Error storage_sd_info(Storage* storage, SDInfo* info) {
S_API_PROLOGUE;
SAData data = {
.sdinfo = {
.info = info,
}};
S_API_MESSAGE(StorageCommandSDInfo);
S_API_EPILOGUE;
return S_RETURN_ERROR;
}
FS_Error storage_sd_status(Storage* storage) {
S_API_PROLOGUE;
SAData data = {};
S_API_MESSAGE(StorageCommandSDStatus);
S_API_EPILOGUE;
return S_RETURN_ERROR;
}
File* storage_file_alloc(Storage* storage) {
File* file = malloc(sizeof(File));
file->type = FileTypeClosed;
file->storage = storage;
FURI_LOG_T(TAG, "File/Dir %p alloc", (uint32_t)file - SRAM_BASE);
return file;
}
bool storage_file_is_open(File* file) {
return (file->type != FileTypeClosed);
}
bool storage_file_is_dir(File* file) {
return (file->type == FileTypeOpenDir);
}
void storage_file_free(File* file) {
if(storage_file_is_open(file)) {
if(storage_file_is_dir(file)) {
storage_dir_close(file);
} else {
storage_file_close(file);
}
}
FURI_LOG_T(TAG, "File/Dir %p free", (uint32_t)file - SRAM_BASE);
free(file);
}
FuriPubSub* storage_get_pubsub(Storage* storage) {
return storage->pubsub;
}
bool storage_simply_remove_recursive(Storage* storage, const char* path) {
furi_assert(storage);
furi_assert(path);
FileInfo fileinfo;
bool result = false;
string_t fullname;
string_t cur_dir;
if(storage_simply_remove(storage, path)) {
return true;
}
char* name = malloc(MAX_NAME_LENGTH + 1);
File* dir = storage_file_alloc(storage);
string_init_set_str(cur_dir, path);
bool go_deeper = false;
while(1) {
if(!storage_dir_open(dir, string_get_cstr(cur_dir))) {
storage_dir_close(dir);
break;
}
while(storage_dir_read(dir, &fileinfo, name, MAX_NAME_LENGTH)) {
if(fileinfo.flags & FSF_DIRECTORY) {
string_cat_printf(cur_dir, "/%s", name);
go_deeper = true;
break;
}
string_init_printf(fullname, "%s/%s", string_get_cstr(cur_dir), name);
FS_Error error = storage_common_remove(storage, string_get_cstr(fullname));
furi_check(error == FSE_OK);
string_clear(fullname);
}
storage_dir_close(dir);
if(go_deeper) {
go_deeper = false;
continue;
}
FS_Error error = storage_common_remove(storage, string_get_cstr(cur_dir));
furi_check(error == FSE_OK);
if(string_cmp(cur_dir, path)) {
size_t last_char = string_search_rchar(cur_dir, '/');
furi_assert(last_char != STRING_FAILURE);
string_left(cur_dir, last_char);
} else {
result = true;
break;
}
}
storage_file_free(dir);
string_clear(cur_dir);
free(name);
return result;
}
bool storage_simply_remove(Storage* storage, const char* path) {
FS_Error result;
result = storage_common_remove(storage, path);
return result == FSE_OK || result == FSE_NOT_EXIST;
}
bool storage_simply_mkdir(Storage* storage, const char* path) {
FS_Error result;
result = storage_common_mkdir(storage, path);
return result == FSE_OK || result == FSE_EXIST;
}
void storage_get_next_filename(
Storage* storage,
const char* dirname,
const char* filename,
const char* fileextension,
string_t nextfilename,
uint8_t max_len) {
string_t temp_str;
uint16_t num = 0;
string_init_printf(temp_str, "%s/%s%s", dirname, filename, fileextension);
while(storage_common_stat(storage, string_get_cstr(temp_str), NULL) == FSE_OK) {
num++;
string_printf(temp_str, "%s/%s%d%s", dirname, filename, num, fileextension);
}
if(num && (max_len > strlen(filename))) {
string_printf(nextfilename, "%s%d", filename, num);
} else {
string_printf(nextfilename, "%s", filename);
}
string_clear(temp_str);
}
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