fs_interface.h

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/*
 * Copyright (c) 2016 Intel Corporation.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_FS_FS_INTERFACE_H_
#define ZEPHYR_INCLUDE_FS_FS_INTERFACE_H_
 
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#if defined(CONFIG_FILE_SYSTEM_MAX_FILE_NAME) && (CONFIG_FILE_SYSTEM_MAX_FILE_NAME - 0) > 0
 
/* No in-tree file system supports name longer than 255 characters */
#if (CONFIG_FILE_SYSTEM_LITTLEFS || CONFIG_FAT_FILESYSTEM_ELM ||        \
        CONFIG_FILE_SYSTEM_EXT2) && (CONFIG_FILE_SYSTEM_MAX_FILE_NAME > 255)
#error "Max allowed CONFIG_FILE_SYSTEM_MAX_FILE_NAME is 255 characters, when any in-tree FS enabled"
#endif
 
/* Enabled FAT driver, without LFN, restricts name length to 12 characters */
#if defined(CONFIG_FAT_FILESYSTEM_ELM) && !(CONFIG_FS_FATFS_LFN) && \
        (CONFIG_FILE_SYSTEM_MAX_FILE_NAME > 12)
#error "CONFIG_FILE_SYSTEM_MAX_FILE_NAME can not be > 12 if FAT is enabled without LFN"
#endif
 
#define MAX_FILE_NAME CONFIG_FILE_SYSTEM_MAX_FILE_NAME
 
#else
/* Select from enabled file systems */
 
#if defined(CONFIG_FAT_FILESYSTEM_ELM)
 
#if defined(CONFIG_FS_FATFS_LFN)
#define MAX_FILE_NAME CONFIG_FS_FATFS_MAX_LFN
#else /* CONFIG_FS_FATFS_LFN */
#define MAX_FILE_NAME 12 /* Uses 8.3 SFN */
#endif /* CONFIG_FS_FATFS_LFN */
 
#endif
 
#if !defined(MAX_FILE_NAME) && defined(CONFIG_FILE_SYSTEM_EXT2)
#define MAX_FILE_NAME 255
#endif
 
#if !defined(MAX_FILE_NAME) && defined(CONFIG_FILE_SYSTEM_LITTLEFS)
#define MAX_FILE_NAME 255
#endif
 
#if !defined(MAX_FILE_NAME) /* filesystem selection */
/* Use standard 8.3 when no filesystem is explicitly selected */
#define MAX_FILE_NAME 12
#endif /* filesystem selection */
 
#endif /* CONFIG_FILE_SYSTEM_MAX_FILE_NAME */
 
 
/* Type for fs_open flags */
typedef uint8_t fs_mode_t;
 
struct fs_mount_t;
 
struct fs_file_t {
        void *filep;
        const struct fs_mount_t *mp;
        fs_mode_t flags;
};
 
struct fs_dir_t {
        void *dirp;
        const struct fs_mount_t *mp;
};
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_FS_FS_INTERFACE_H_ */