/* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /* ArduPilot filesystem backend interface. */ #pragma once #include #include #include "AP_Filesystem_Available.h" class AP_Filesystem_Backend { public: // functions that closely match the equivalent posix calls virtual int open(const char *fname, int flags) { return -1; } virtual int close(int fd) { return -1; } virtual int32_t read(int fd, void *buf, uint32_t count) { return -1; } virtual int32_t write(int fd, const void *buf, uint32_t count) { return -1; } virtual int fsync(int fd) { return 0; } virtual int32_t lseek(int fd, int32_t offset, int whence) { return -1; } virtual int stat(const char *pathname, struct stat *stbuf) { return -1; } virtual int unlink(const char *pathname) { return -1; } virtual int mkdir(const char *pathname) { return -1; } virtual void *opendir(const char *pathname) { return nullptr; } virtual struct dirent *readdir(void *dirp) { return nullptr; } virtual int closedir(void *dirp) { return -1; } // return free disk space in bytes, -1 on error virtual int64_t disk_free(const char *path) { return 0; } // return total disk space in bytes, -1 on error virtual int64_t disk_space(const char *path) { return 0; } // set modification time on a file virtual bool set_mtime(const char *filename, const uint32_t mtime_sec) { return false; } };