739 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			739 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
#include "fatfs.h"
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#include "filesystem-api.h"
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#include "sd-filesystem.h"
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/******************* Global vars for api *******************/
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static SdFsInfo* fs_info;
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/******************* Core Functions *******************/
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bool _fs_init(SdFsInfo* _fs_info) {
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    bool result = true;
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    _fs_info->mutex = osMutexNew(NULL);
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    if(_fs_info->mutex == NULL) result = false;
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    for(uint8_t i = 0; i < SD_FS_MAX_FILES; i++) {
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        _fs_info->files[i].thread_id = NULL;
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    }
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    _fs_info->path = "0:/";
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    _fs_info->status = SD_NO_CARD;
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    // store pointer for api fns
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    fs_info = _fs_info;
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    return result;
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}
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bool _fs_lock(SdFsInfo* fs_info) {
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    api_hal_power_insomnia_enter();
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    return (osMutexAcquire(fs_info->mutex, osWaitForever) == osOK);
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}
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bool _fs_unlock(SdFsInfo* fs_info) {
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    api_hal_power_insomnia_exit();
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    return (osMutexRelease(fs_info->mutex) == osOK);
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}
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SDError _get_filedata(SdFsInfo* fs_info, File* file, FileData** filedata, FiledataFilter filter) {
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    SDError error = SD_OK;
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    _fs_lock(fs_info);
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    if(fs_info->status == SD_OK) {
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        if(file != NULL && file->file_id < SD_FS_MAX_FILES) {
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            if(fs_info->files[file->file_id].thread_id == osThreadGetId()) {
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                if(filter == FDF_ANY) {
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                    // any type
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                    *filedata = &fs_info->files[file->file_id];
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                } else if(filter == FDF_FILE) {
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                    // file type
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                    if(!fs_info->files[file->file_id].is_dir) {
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                        *filedata = &fs_info->files[file->file_id];
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                    } else {
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                        error = SD_NOT_A_FILE;
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                    }
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                } else if(filter == FDF_DIR) {
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                    // dir type
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                    if(fs_info->files[file->file_id].is_dir) {
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                        *filedata = &fs_info->files[file->file_id];
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                    } else {
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                        error = SD_NOT_A_DIR;
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                    }
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                }
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            } else {
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                error = SD_OTHER_APP;
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            }
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        } else {
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            error = SD_INVALID_PARAMETER;
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        }
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    } else {
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        error = SD_NO_CARD;
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    }
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    _fs_unlock(fs_info);
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    return error;
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}
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SDError _get_file(SdFsInfo* fs_info, File* file, FileData** filedata) {
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    return _get_filedata(fs_info, file, filedata, FDF_FILE);
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}
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SDError _get_dir(SdFsInfo* fs_info, File* file, FileData** filedata) {
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    return _get_filedata(fs_info, file, filedata, FDF_DIR);
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}
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SDError _get_any(SdFsInfo* fs_info, File* file, FileData** filedata) {
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    return _get_filedata(fs_info, file, filedata, FDF_ANY);
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}
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SDError _fs_status(SdFsInfo* fs_info) {
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    SDError result;
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    _fs_lock(fs_info);
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    result = fs_info->status;
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    _fs_unlock(fs_info);
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    return result;
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}
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void _fs_on_client_app_exit(SdFsInfo* fs_info) {
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    _fs_lock(fs_info);
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    for(uint8_t i = 0; i < SD_FS_MAX_FILES; i++) {
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        if(fs_info->files[i].thread_id == osThreadGetId()) {
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            if(fs_info->files[i].is_dir) {
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                // TODO close dir
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            } else {
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                // TODO close file
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            }
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        }
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    }
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    _fs_unlock(fs_info);
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}
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FS_Error _fs_parse_error(SDError error) {
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    FS_Error result;
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    switch(error) {
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    case SD_OK:
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        result = FSE_OK;
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        break;
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    case SD_INT_ERR:
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        result = FSE_INTERNAL;
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        break;
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    case SD_NO_FILE:
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        result = FSE_NOT_EXIST;
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        break;
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    case SD_NO_PATH:
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        result = FSE_NOT_EXIST;
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        break;
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    case SD_INVALID_NAME:
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        result = FSE_INVALID_NAME;
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        break;
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    case SD_DENIED:
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        result = FSE_DENIED;
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        break;
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    case SD_EXIST:
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        result = FSE_EXIST;
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        break;
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    case SD_INVALID_OBJECT:
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        result = FSE_INTERNAL;
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        break;
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    case SD_WRITE_PROTECTED:
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        result = FSE_INTERNAL;
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        break;
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    case SD_INVALID_DRIVE:
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        result = FSE_INTERNAL;
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        break;
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    case SD_NOT_ENABLED:
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        result = FSE_INTERNAL;
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        break;
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    case SD_NO_FILESYSTEM:
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        result = FSE_NOT_READY;
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        break;
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    case SD_MKFS_ABORTED:
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        result = FSE_INTERNAL;
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        break;
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    case SD_TIMEOUT:
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        result = FSE_INTERNAL;
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        break;
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    case SD_LOCKED:
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        result = FSE_INTERNAL;
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        break;
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    case SD_NOT_ENOUGH_CORE:
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        result = FSE_INTERNAL;
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        break;
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    case SD_TOO_MANY_OPEN_FILES:
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        result = FSE_INTERNAL;
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        break;
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    case SD_INVALID_PARAMETER:
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        result = FSE_INVALID_PARAMETER;
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        break;
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    case SD_NO_CARD:
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        result = FSE_NOT_READY;
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        break;
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    case SD_NOT_A_FILE:
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        result = FSE_INVALID_PARAMETER;
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        break;
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    case SD_NOT_A_DIR:
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        result = FSE_INVALID_PARAMETER;
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        break;
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    case SD_OTHER_APP:
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        result = FSE_INTERNAL;
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        break;
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    default:
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        result = FSE_INTERNAL;
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        break;
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    }
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    return result;
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}
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/******************* File Functions *******************/
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// Open/Create a file
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bool fs_file_open(File* file, const char* path, FS_AccessMode access_mode, FS_OpenMode open_mode) {
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    SDFile* sd_file = NULL;
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    _fs_lock(fs_info);
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    for(uint8_t index = 0; index < SD_FS_MAX_FILES; index++) {
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        FileData* filedata = &fs_info->files[index];
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        if(filedata->thread_id == NULL) {
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            file->file_id = index;
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            memset(&(filedata->data), 0, sizeof(SDFileDirStorage));
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            filedata->thread_id = osThreadGetId();
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            filedata->is_dir = false;
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            sd_file = &(filedata->data.file);
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            break;
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        }
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    }
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    _fs_unlock(fs_info);
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    if(sd_file == NULL) {
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        file->internal_error_id = SD_TOO_MANY_OPEN_FILES;
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    } else {
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        uint8_t _mode = 0;
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        if(access_mode & FSAM_READ) _mode |= FA_READ;
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        if(access_mode & FSAM_WRITE) _mode |= FA_WRITE;
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        if(open_mode & FSOM_OPEN_EXISTING) _mode |= FA_OPEN_EXISTING;
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        if(open_mode & FSOM_OPEN_ALWAYS) _mode |= FA_OPEN_ALWAYS;
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        if(open_mode & FSOM_OPEN_APPEND) _mode |= FA_OPEN_APPEND;
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        if(open_mode & FSOM_CREATE_NEW) _mode |= FA_CREATE_NEW;
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        if(open_mode & FSOM_CREATE_ALWAYS) _mode |= FA_CREATE_ALWAYS;
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        file->internal_error_id = f_open(sd_file, path, _mode);
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    }
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    // TODO on exit
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    //furiac_onexit(_fs_on_client_app_exit, fs_info);
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return (file->internal_error_id == SD_OK);
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}
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// Close an opened file
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bool fs_file_close(File* file) {
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    FileData* filedata = NULL;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        file->internal_error_id = f_close(&filedata->data.file);
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        _fs_lock(fs_info);
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        filedata->thread_id = NULL;
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        _fs_unlock(fs_info);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return (file->internal_error_id == SD_OK);
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}
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// Read data from the file
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uint16_t fs_file_read(File* file, void* buff, uint16_t const bytes_to_read) {
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    FileData* filedata = NULL;
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    uint16_t bytes_readed = 0;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        file->internal_error_id = f_read(&filedata->data.file, buff, bytes_to_read, &bytes_readed);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return bytes_readed;
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}
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// Write data to the file
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uint16_t fs_file_write(File* file, const void* buff, uint16_t const bytes_to_write) {
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    FileData* filedata = NULL;
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    uint16_t bytes_written = 0;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        file->internal_error_id =
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            f_write(&filedata->data.file, buff, bytes_to_write, &bytes_written);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return bytes_written;
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}
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// Move read/write pointer, expand size
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bool fs_file_seek(File* file, const uint32_t offset, const bool from_start) {
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    FileData* filedata = NULL;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        if(from_start) {
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            file->internal_error_id = f_lseek(&filedata->data.file, offset);
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        } else {
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            uint64_t position = f_tell(&filedata->data.file);
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            position += offset;
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            file->internal_error_id = f_lseek(&filedata->data.file, position);
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        }
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return (file->internal_error_id == SD_OK);
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}
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// Tell pointer position
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uint64_t fs_file_tell(File* file) {
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    FileData* filedata = NULL;
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    uint64_t position = 0;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        position = f_tell(&filedata->data.file);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return position;
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}
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// Truncate file size to current pointer value
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bool fs_file_truncate(File* file) {
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    FileData* filedata = NULL;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        file->internal_error_id = f_truncate(&filedata->data.file);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return (file->internal_error_id == SD_OK);
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}
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// Flush cached data
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bool fs_file_sync(File* file) {
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    FileData* filedata = NULL;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        file->internal_error_id = f_sync(&filedata->data.file);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return (file->internal_error_id == SD_OK);
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}
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// Get size
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uint64_t fs_file_size(File* file) {
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    FileData* filedata = NULL;
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    uint64_t size = 0;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        size = f_size(&filedata->data.file);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return size;
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}
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// Test EOF
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bool fs_file_eof(File* file) {
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    FileData* filedata = NULL;
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    bool eof = true;
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    file->internal_error_id = _get_file(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        eof = f_eof(&filedata->data.file);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return eof;
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}
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/******************* Dir Functions *******************/
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// Open directory
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bool fs_dir_open(File* file, const char* path) {
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    SDDir* sd_dir = NULL;
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    _fs_lock(fs_info);
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    for(uint8_t index = 0; index < SD_FS_MAX_FILES; index++) {
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        FileData* filedata = &fs_info->files[index];
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        if(filedata->thread_id == NULL) {
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            file->file_id = index;
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            memset(&(filedata->data), 0, sizeof(SDFileDirStorage));
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            filedata->thread_id = osThreadGetId();
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            filedata->is_dir = true;
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            sd_dir = &(filedata->data.dir);
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            break;
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        }
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    }
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    _fs_unlock(fs_info);
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    if(sd_dir == NULL) {
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        file->internal_error_id = SD_TOO_MANY_OPEN_FILES;
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    } else {
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        file->internal_error_id = f_opendir(sd_dir, path);
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    }
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    // TODO on exit
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    //furiac_onexit(_fs_on_client_app_exit, fs_info);
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return (file->internal_error_id == SD_OK);
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}
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// Close directory
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bool fs_dir_close(File* file) {
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    FileData* filedata = NULL;
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    file->internal_error_id = _get_dir(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        file->internal_error_id = f_closedir(&filedata->data.dir);
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        _fs_lock(fs_info);
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        filedata->thread_id = NULL;
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        _fs_unlock(fs_info);
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    }
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    file->error_id = _fs_parse_error(file->internal_error_id);
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    return (file->internal_error_id == SD_OK);
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}
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// Read next file info and name from directory
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bool fs_dir_read(File* file, FileInfo* fileinfo, char* name, const uint16_t name_length) {
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    FileData* filedata = NULL;
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    file->internal_error_id = _get_dir(fs_info, file, &filedata);
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    if(file->internal_error_id == SD_OK) {
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        SDFileInfo _fileinfo;
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        file->internal_error_id = f_readdir(&filedata->data.dir, &_fileinfo);
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						|
        if(fileinfo != NULL) {
 | 
						|
            fileinfo->date.value = _fileinfo.fdate;
 | 
						|
            fileinfo->time.value = _fileinfo.ftime;
 | 
						|
            fileinfo->size = _fileinfo.fsize;
 | 
						|
            fileinfo->flags = 0;
 | 
						|
 | 
						|
            if(_fileinfo.fattrib & AM_RDO) fileinfo->flags |= FSF_READ_ONLY;
 | 
						|
            if(_fileinfo.fattrib & AM_HID) fileinfo->flags |= FSF_HIDDEN;
 | 
						|
            if(_fileinfo.fattrib & AM_SYS) fileinfo->flags |= FSF_SYSTEM;
 | 
						|
            if(_fileinfo.fattrib & AM_DIR) fileinfo->flags |= FSF_DIRECTORY;
 | 
						|
            if(_fileinfo.fattrib & AM_ARC) fileinfo->flags |= FSF_ARCHIVE;
 | 
						|
        }
 | 
						|
 | 
						|
        if(name != NULL && name_length > 0) {
 | 
						|
            strlcpy(name, _fileinfo.fname, name_length);
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    file->error_id = _fs_parse_error(file->internal_error_id);
 | 
						|
    return (file->internal_error_id == SD_OK);
 | 
						|
}
 | 
						|
 | 
						|
bool fs_dir_rewind(File* file) {
 | 
						|
    FileData* filedata = NULL;
 | 
						|
    file->internal_error_id = _get_dir(fs_info, file, &filedata);
 | 
						|
 | 
						|
    if(file->internal_error_id == SD_OK) {
 | 
						|
        file->internal_error_id = f_readdir(&filedata->data.dir, NULL);
 | 
						|
    }
 | 
						|
 | 
						|
    file->error_id = _fs_parse_error(file->internal_error_id);
 | 
						|
    return (file->internal_error_id == SD_OK);
 | 
						|
}
 | 
						|
 | 
						|
/******************* Common FS Functions *******************/
 | 
						|
 | 
						|
// Get info about file/dir
 | 
						|
FS_Error
 | 
						|
    fs_common_info(const char* path, FileInfo* fileinfo, char* name, const uint16_t name_length) {
 | 
						|
    SDFileInfo _fileinfo;
 | 
						|
    SDError fresult = _fs_status(fs_info);
 | 
						|
 | 
						|
    if(fresult == SD_OK) {
 | 
						|
        fresult = f_stat(path, &_fileinfo);
 | 
						|
        if((FRESULT)fresult == FR_OK) {
 | 
						|
            if(fileinfo != NULL) {
 | 
						|
                fileinfo->date.value = _fileinfo.fdate;
 | 
						|
                fileinfo->time.value = _fileinfo.ftime;
 | 
						|
                fileinfo->size = _fileinfo.fsize;
 | 
						|
                fileinfo->flags = 0;
 | 
						|
 | 
						|
                if(_fileinfo.fattrib & AM_RDO) fileinfo->flags |= FSF_READ_ONLY;
 | 
						|
                if(_fileinfo.fattrib & AM_HID) fileinfo->flags |= FSF_HIDDEN;
 | 
						|
                if(_fileinfo.fattrib & AM_SYS) fileinfo->flags |= FSF_SYSTEM;
 | 
						|
                if(_fileinfo.fattrib & AM_DIR) fileinfo->flags |= FSF_DIRECTORY;
 | 
						|
                if(_fileinfo.fattrib & AM_ARC) fileinfo->flags |= FSF_ARCHIVE;
 | 
						|
            }
 | 
						|
 | 
						|
            if(name != NULL && name_length > 0) {
 | 
						|
                strlcpy(name, _fileinfo.fname, name_length);
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    return _fs_parse_error(fresult);
 | 
						|
}
 | 
						|
 | 
						|
// Delete file/dir
 | 
						|
// File/dir must not have read-only attribute.
 | 
						|
// File/dir must be empty.
 | 
						|
// File/dir must not be opened, or the FAT volume can be collapsed. FF_FS_LOCK fix that.
 | 
						|
FS_Error fs_common_remove(const char* path) {
 | 
						|
    SDError fresult = _fs_status(fs_info);
 | 
						|
 | 
						|
    if(fresult == SD_OK) {
 | 
						|
        fresult = f_unlink(path);
 | 
						|
    }
 | 
						|
 | 
						|
    return _fs_parse_error(fresult);
 | 
						|
}
 | 
						|
 | 
						|
// Rename file/dir
 | 
						|
// File/dir must not be opened, or the FAT volume can be collapsed. FF_FS_LOCK fix that.
 | 
						|
FS_Error fs_common_rename(const char* old_path, const char* new_path) {
 | 
						|
    SDError fresult = _fs_status(fs_info);
 | 
						|
 | 
						|
    if(fresult == SD_OK) {
 | 
						|
        fresult = f_rename(old_path, new_path);
 | 
						|
    }
 | 
						|
 | 
						|
    return _fs_parse_error(fresult);
 | 
						|
}
 | 
						|
 | 
						|
// Set attributes of file/dir
 | 
						|
// For example:
 | 
						|
// set "read only" flag and remove "hidden" flag
 | 
						|
// fs_common_set_attr("file.txt", FSF_READ_ONLY, FSF_READ_ONLY | FSF_HIDDEN);
 | 
						|
FS_Error fs_common_set_attr(const char* path, uint8_t attr, uint8_t mask) {
 | 
						|
    SDError fresult = _fs_status(fs_info);
 | 
						|
 | 
						|
    if(fresult == SD_OK) {
 | 
						|
        uint8_t _mask = 0;
 | 
						|
        uint8_t _attr = 0;
 | 
						|
 | 
						|
        if(mask & FSF_READ_ONLY) _mask |= AM_RDO;
 | 
						|
        if(mask & FSF_HIDDEN) _mask |= AM_HID;
 | 
						|
        if(mask & FSF_SYSTEM) _mask |= AM_SYS;
 | 
						|
        if(mask & FSF_DIRECTORY) _mask |= AM_DIR;
 | 
						|
        if(mask & FSF_ARCHIVE) _mask |= AM_ARC;
 | 
						|
 | 
						|
        if(attr & FSF_READ_ONLY) _attr |= AM_RDO;
 | 
						|
        if(attr & FSF_HIDDEN) _attr |= AM_HID;
 | 
						|
        if(attr & FSF_SYSTEM) _attr |= AM_SYS;
 | 
						|
        if(attr & FSF_DIRECTORY) _attr |= AM_DIR;
 | 
						|
        if(attr & FSF_ARCHIVE) _attr |= AM_ARC;
 | 
						|
 | 
						|
        fresult = f_chmod(path, attr, mask);
 | 
						|
    }
 | 
						|
 | 
						|
    return _fs_parse_error(fresult);
 | 
						|
}
 | 
						|
 | 
						|
// Set time of file/dir
 | 
						|
FS_Error fs_common_set_time(const char* path, FileDateUnion date, FileTimeUnion time) {
 | 
						|
    SDError fresult = _fs_status(fs_info);
 | 
						|
 | 
						|
    if(fresult == SD_OK) {
 | 
						|
        SDFileInfo _fileinfo;
 | 
						|
 | 
						|
        _fileinfo.fdate = date.value;
 | 
						|
        _fileinfo.ftime = time.value;
 | 
						|
 | 
						|
        fresult = f_utime(path, &_fileinfo);
 | 
						|
    }
 | 
						|
 | 
						|
    return _fs_parse_error(fresult);
 | 
						|
}
 | 
						|
 | 
						|
// Create new directory
 | 
						|
FS_Error fs_common_mkdir(const char* path) {
 | 
						|
    SDError fresult = _fs_status(fs_info);
 | 
						|
 | 
						|
    if(fresult == SD_OK) {
 | 
						|
        fresult = f_mkdir(path);
 | 
						|
    }
 | 
						|
 | 
						|
    return _fs_parse_error(fresult);
 | 
						|
}
 | 
						|
 | 
						|
// Get common info about FS
 | 
						|
FS_Error fs_get_fs_info(uint64_t* total_space, uint64_t* free_space) {
 | 
						|
    SDError fresult = _fs_status(fs_info);
 | 
						|
 | 
						|
    if(fresult == SD_OK) {
 | 
						|
        DWORD free_clusters;
 | 
						|
        FATFS* fs;
 | 
						|
 | 
						|
        fresult = f_getfree("0:/", &free_clusters, &fs);
 | 
						|
        if((FRESULT)fresult == FR_OK) {
 | 
						|
            uint32_t total_sectors = (fs->n_fatent - 2) * fs->csize;
 | 
						|
            uint32_t free_sectors = free_clusters * fs->csize;
 | 
						|
 | 
						|
            uint16_t sector_size = _MAX_SS;
 | 
						|
#if _MAX_SS != _MIN_SS
 | 
						|
            sector_size = fs->ssize;
 | 
						|
#endif
 | 
						|
 | 
						|
            if(total_space != NULL) {
 | 
						|
                *total_space = (uint64_t)total_sectors * (uint64_t)sector_size;
 | 
						|
            }
 | 
						|
 | 
						|
            if(free_space != NULL) {
 | 
						|
                *free_space = (uint64_t)free_sectors * (uint64_t)sector_size;
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    return _fs_parse_error(fresult);
 | 
						|
}
 | 
						|
 | 
						|
/******************* Error Reporting Functions *******************/
 | 
						|
 | 
						|
// Get common error description
 | 
						|
const char* fs_error_get_desc(FS_Error error_id) {
 | 
						|
    const char* result;
 | 
						|
    switch(error_id) {
 | 
						|
    case(FSE_OK):
 | 
						|
        result = "OK";
 | 
						|
        break;
 | 
						|
    case(FSE_NOT_READY):
 | 
						|
        result = "filesystem not ready";
 | 
						|
        break;
 | 
						|
    case(FSE_EXIST):
 | 
						|
        result = "file/dir already exist";
 | 
						|
        break;
 | 
						|
    case(FSE_NOT_EXIST):
 | 
						|
        result = "file/dir not exist";
 | 
						|
        break;
 | 
						|
    case(FSE_INVALID_PARAMETER):
 | 
						|
        result = "invalid parameter";
 | 
						|
        break;
 | 
						|
    case(FSE_DENIED):
 | 
						|
        result = "access denied";
 | 
						|
        break;
 | 
						|
    case(FSE_INVALID_NAME):
 | 
						|
        result = "invalid name/path";
 | 
						|
        break;
 | 
						|
    case(FSE_INTERNAL):
 | 
						|
        result = "internal error";
 | 
						|
        break;
 | 
						|
    case(FSE_NOT_IMPLEMENTED):
 | 
						|
        result = "function not implemented";
 | 
						|
        break;
 | 
						|
    default:
 | 
						|
        result = "unknown error";
 | 
						|
        break;
 | 
						|
    }
 | 
						|
    return result;
 | 
						|
}
 | 
						|
 | 
						|
// Get internal error description
 | 
						|
const char* fs_error_get_internal_desc(uint32_t internal_error_id) {
 | 
						|
    const char* result;
 | 
						|
    switch(internal_error_id) {
 | 
						|
    case(SD_OK):
 | 
						|
        result = "OK";
 | 
						|
        break;
 | 
						|
    case(SD_DISK_ERR):
 | 
						|
        result = "disk error";
 | 
						|
        break;
 | 
						|
    case(SD_INT_ERR):
 | 
						|
        result = "internal error";
 | 
						|
        break;
 | 
						|
    case(SD_NO_FILE):
 | 
						|
        result = "no file";
 | 
						|
        break;
 | 
						|
    case(SD_NO_PATH):
 | 
						|
        result = "no path";
 | 
						|
        break;
 | 
						|
    case(SD_INVALID_NAME):
 | 
						|
        result = "invalid name";
 | 
						|
        break;
 | 
						|
    case(SD_DENIED):
 | 
						|
        result = "access denied";
 | 
						|
        break;
 | 
						|
    case(SD_EXIST):
 | 
						|
        result = "file/dir exist";
 | 
						|
        break;
 | 
						|
    case(SD_INVALID_OBJECT):
 | 
						|
        result = "invalid object";
 | 
						|
        break;
 | 
						|
    case(SD_WRITE_PROTECTED):
 | 
						|
        result = "write protected";
 | 
						|
        break;
 | 
						|
    case(SD_INVALID_DRIVE):
 | 
						|
        result = "invalid drive";
 | 
						|
        break;
 | 
						|
    case(SD_NOT_ENABLED):
 | 
						|
        result = "not enabled";
 | 
						|
        break;
 | 
						|
    case(SD_NO_FILESYSTEM):
 | 
						|
        result = "no filesystem";
 | 
						|
        break;
 | 
						|
    case(SD_MKFS_ABORTED):
 | 
						|
        result = "aborted";
 | 
						|
        break;
 | 
						|
    case(SD_TIMEOUT):
 | 
						|
        result = "timeout";
 | 
						|
        break;
 | 
						|
    case(SD_LOCKED):
 | 
						|
        result = "file locked";
 | 
						|
        break;
 | 
						|
    case(SD_NOT_ENOUGH_CORE):
 | 
						|
        result = "not enough memory";
 | 
						|
        break;
 | 
						|
    case(SD_TOO_MANY_OPEN_FILES):
 | 
						|
        result = "too many open files";
 | 
						|
        break;
 | 
						|
    case(SD_INVALID_PARAMETER):
 | 
						|
        result = "invalid parameter";
 | 
						|
        break;
 | 
						|
    case(SD_NO_CARD):
 | 
						|
        result = "no SD Card";
 | 
						|
        break;
 | 
						|
    case(SD_NOT_A_FILE):
 | 
						|
        result = "not a file";
 | 
						|
        break;
 | 
						|
    case(SD_NOT_A_DIR):
 | 
						|
        result = "not a directory";
 | 
						|
        break;
 | 
						|
    case(SD_OTHER_APP):
 | 
						|
        result = "opened by other app";
 | 
						|
        break;
 | 
						|
    case(SD_LOW_LEVEL_ERR):
 | 
						|
        result = "low level error";
 | 
						|
        break;
 | 
						|
    default:
 | 
						|
        result = "unknown error";
 | 
						|
        break;
 | 
						|
    }
 | 
						|
    return result;
 | 
						|
} |