#ifndef _LIBC_SYS_MMAN_H
#define _LIBC_SYS_MMAN_H

#pragma once

#include <sys/types.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
    * Anonymous-memory mmap over SYS_ALLOC. SYS_ALLOC returns
    * page-aligned process memory, which is exactly what callers like
    * GCC's page allocator need. File-backed mappings are not
    * supported and fail with ENODEV.
*/

#define PROT_NONE  0
#define PROT_READ  1
#define PROT_WRITE 2
#define PROT_EXEC  4

#define MAP_SHARED    0x01
#define MAP_PRIVATE   0x02
#define MAP_FIXED     0x10
#define MAP_ANONYMOUS 0x20
#define MAP_ANON      MAP_ANONYMOUS

#define MAP_FAILED ((void *)-1)

void *mmap(void *addr, size_t length, int prot, int flags, int fd,
           long offset);
int   munmap(void *addr, size_t length);
int   mprotect(void *addr, size_t length, int prot);

#ifdef __cplusplus
}
#endif

#endif /* _LIBC_SYS_MMAN_H */