posix.h

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/*
 * TARFS - Immutable (read-only) filesystem for embedded systems.
 *
 * Copyright (c) 2026 Viacheslav Logunov
 * SPDX-License-Identifier: MMIT
 *
 * Author:
 *   Viacheslav Logunov <vvb333007@gmail.com>
 *
 * Project:
 *   https://github.com/vvb333007/tarfs
 *
 * @file posix.h
 * @brief POSIX extensions API for TARFS (mmap(), sendfile() etc)
 */
 
#pragma once
 
#include <stdint.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <sys/types.h>

#define PROT_READ     1  
#define PROT_WRITE    2  
#define PROT_EXEC     4  
 
#define MAP_FILE      0  
#define MAP_SHARED    1  
#define MAP_PRIVATE   2  
 
#define MAP_FIXED     4  
#define MAP_ANONYMOUS 8  
#define MAP_ANON      8 
 
 
#define MAP_FAILED   ((void *)(-1))
 
 
 
 
#ifdef __cplusplus
extern "C" {
#endif
void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
 

int munmap(void *addr, size_t length);
 
#if CONFIG_TARFS_HAVE_FDOPENDIR
DIR *fdopendir(int fd);
#endif /* CONFIG_TARFS_HAVE_FDOPENDIR */
 
#if CONFIG_TARFS_HAVE_DUPFD
int dupfd(int fd);
#endif /* CONFIG_TARFS_HAVE_DUPFD */
 
 
#if CONFIG_TARFS_HAVE_STATVFS
int statvfs(const char *path, struct statvfs *st);
#endif /* CONFIG_TARFS_HAVE_STATVFS */
 
#if CONFIG_TARFS_HAVE_SENDFILE
ssize_t sendfile(int out_fd, int in_fd, off_t *offset, size_t count);
#endif /* #if CONFIG_TARFS_HAVE_SENDFILE */
 
#ifdef __cplusplus
};
#endif