mman.h

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// MIT License
//
// Copyright (c) 2026 Christian Spoo
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
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//
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/*
 * sys/mman.h — miniOS userspace mmap/munmap declarations
 *
 * Newlib 4.5.0 for x86_64-elf does not ship sys/mman.h.
 * This header provides the POSIX-compatible subset used by testmmap.
 * Constants match Linux x86-64 ABI values (which the kernel expects).
 */
 
#ifndef _SYS_MMAN_H
#define _SYS_MMAN_H
 
#include <stddef.h>
 
/* Protection flags */
#define PROT_NONE  0
#define PROT_READ  1
#define PROT_WRITE 2
#define PROT_EXEC  4
 
/* Mapping flags */
#define MAP_SHARED    0x01
#define MAP_PRIVATE   0x02
#define MAP_ANONYMOUS 0x20
#define MAP_ANON      MAP_ANONYMOUS
 
/* Error return value */
#define MAP_FAILED ((void *)-1)
 
void *mmap(void *addr, size_t len, int prot, int flags, int fd, long offset);
int   munmap(void *addr, size_t len);
 
#endif /* _SYS_MMAN_H */