esp-idf/components/spiffs/include/esp_spiffs.h

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/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
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#ifndef _ESP_SPIFFS_H_
#define _ESP_SPIFFS_H_
#include <stdbool.h>
#include "esp_err.h"
#ifdef __cplusplus
extern "C" {
#endif
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/**
* @brief Configuration structure for esp_vfs_spiffs_register
*/
typedef struct {
const char* base_path; /*!< File path prefix associated with the filesystem. */
const char* partition_label; /*!< Optional, label of SPIFFS partition to use. If set to NULL, first partition with subtype=spiffs will be used. */
size_t max_files; /*!< Maximum files that could be open at the same time. */
bool format_if_mount_failed; /*!< If true, it will format the file system if it fails to mount. */
} esp_vfs_spiffs_conf_t;
/**
* Register and mount SPIFFS to VFS with given path prefix.
*
* @param conf Pointer to esp_vfs_spiffs_conf_t configuration structure
*
* @return
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* - ESP_OK if success
* - ESP_ERR_NO_MEM if objects could not be allocated
* - ESP_ERR_INVALID_STATE if already mounted or partition is encrypted
* - ESP_ERR_NOT_FOUND if partition for SPIFFS was not found
* - ESP_FAIL if mount or format fails
*/
esp_err_t esp_vfs_spiffs_register(const esp_vfs_spiffs_conf_t * conf);
/**
* Unregister and unmount SPIFFS from VFS
*
* @param partition_label Same label as passed to esp_vfs_spiffs_register.
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*
* @return
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* - ESP_OK if successful
* - ESP_ERR_INVALID_STATE already unregistered
*/
esp_err_t esp_vfs_spiffs_unregister(const char* partition_label);
/**
* Check if SPIFFS is mounted
*
* @param partition_label Optional, label of the partition to check.
* If not specified, first partition with subtype=spiffs is used.
*
* @return
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* - true if mounted
* - false if not mounted
*/
bool esp_spiffs_mounted(const char* partition_label);
/**
* Format the SPIFFS partition
*
* @param partition_label Same label as passed to esp_vfs_spiffs_register.
* @return
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* - ESP_OK if successful
* - ESP_FAIL on error
*/
esp_err_t esp_spiffs_format(const char* partition_label);
/**
* Get information for SPIFFS
*
* @param partition_label Same label as passed to esp_vfs_spiffs_register
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* @param[out] total_bytes Size of the file system
* @param[out] used_bytes Current used bytes in the file system
*
* @return
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* - ESP_OK if success
* - ESP_ERR_INVALID_STATE if not mounted
*/
esp_err_t esp_spiffs_info(const char* partition_label, size_t *total_bytes, size_t *used_bytes);
#ifdef __cplusplus
}
#endif
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#endif /* _ESP_SPIFFS_H_ */