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#ifndef _SYS_MMAN_H
#define _SYS_MMAN_H
void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
int munmap(void *addr, size_t length);
int msync(void *addr, size_t length, int flags);
int mprotect(void *addr, size_t len, int prot);
#define PROT_NONE 0x00 /* No access. */
#define PROT_READ 0x01 /* Pages can be read. */
#define PROT_WRITE 0x02 /* Pages can be written. */
#define PROT_EXEC 0x04 /* Pages can be executed. */
#define MAP_FILE 0x0001 /* Mapped from a file or device. */
#define MAP_ANON 0x0002 /* Allocated from anonymous virtual memory. */
#define MAP_TYPE 0x000f /* Mask for type field. */
#define MAP_SHARED 0x0010 /* Share changes. */
#define MAP_PRIVATE 0x0000 /* Changes private; copy pages on write. */
#define MAP_FIXED 0x0100 /* Map address must be exactly as requested. */
#define MAP_FAILED ((void *) -1)
#define MS_ASYNC 1 /* Sync memory asynchronously. */
#define MS_SYNC 0 /* Synchronous memory sync. */
#define MS_INVALIDATE 2 /* Invalidate the caches. */
#endif//_SYS_MMAN_H
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