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GitHub Repository: Ardupilot/ardupilot
 Path: blob/master/libraries/AP_Filesystem/AP_Filesystem_FATFS.h
Views: 1798
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/*

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  FATFS backend for AP_Filesystem

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 */

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#pragma once

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#include <sys/types.h>

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#include <sys/stat.h>

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#include <fcntl.h>

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#include <errno.h>

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#include <stddef.h>

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#include "AP_Filesystem_backend.h"

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#if AP_FILESYSTEM_FATFS_ENABLED

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// Seek offset macros

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#define SEEK_SET 0

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#define SEEK_CUR 1

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#define SEEK_END 2

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class AP_Filesystem_FATFS : public AP_Filesystem_Backend

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{

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public:

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    // functions that closely match the equivalent posix calls

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    int open(const char *fname, int flags, bool allow_absolute_paths = false) override;

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    int close(int fd) override;

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    int32_t read(int fd, void *buf, uint32_t count) override;

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    int32_t write(int fd, const void *buf, uint32_t count) override;

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    int fsync(int fd) override;

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    int32_t lseek(int fd, int32_t offset, int whence) override;

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    int stat(const char *pathname, struct stat *stbuf) override;

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    int unlink(const char *pathname) override;

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    int mkdir(const char *pathname) override;

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    void *opendir(const char *pathname) override;

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    int rename(const char *oldpath, const char *newpath) override;

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    struct dirent *readdir(void *dirp) override;

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    int closedir(void *dirp) override;

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    // return free disk space in bytes, -1 on error

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    int64_t disk_free(const char *path) override;

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    // return total disk space in bytes, -1 on error

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    int64_t disk_space(const char *path) override;

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    // set modification time on a file

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    bool set_mtime(const char *filename, const uint32_t mtime_sec) override;

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    // retry mount of filesystem if needed

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    bool retry_mount(void) override;

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    // unmount filesystem for reboot

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    void unmount(void) override;

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    // format sdcard.  This is async, monitor get_format_status for progress

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    bool format(void) override;

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    AP_Filesystem_Backend::FormatStatus get_format_status() const override;

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private:

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    void format_handler(void);

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    FormatStatus format_status;

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};

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#endif  // #if AP_FILESYSTEM_FATFS_ENABLED

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