The sys/mman.h header file exists if the implementation supports at least one of the following options: MF SHM ML MPR TYM SIO ADV The header defines the following protection options: PROT_READ PROT_WRITE PROT_EXEC PROT_NONE The header defines the following flag options: MAP_SHARED MAP_PRIVATE MAP_FIXED The header defines the following flag options for msync(): MS_ASYNC MS_SYNC MS_INVALIDATE The header defines the following flag options for mlockall(): MCL_CURRENT MCL_FUTURE The header defines the following symbolic constant: MAP_FAILED The header defines the following symbolic values: POSIX_MADV_NORMAL POSIX_MADV_SEQUENTIAL POSIX_MADV_RANDOM POSIX_MADV_WILLNEED POSIX_MADV_DONTNEED The header defines the following flags for posix_typed_mem_open(): POSIX_TYPED_MEM_ALLOCATE POSIX_TYPED_MEM_ALLOCATE_CONTIG POSIX_TYPED_MEM_MAP_ALLOCATABLE The mode_t, off_t, and size_t types shall be defined as described in sys/types.h The sys/mman.h header shall define the structure posix_typed_mem_info, which includes at least the following member: size_t posix_tmi_length This function is defined: int mlock(const void *, size_t) This function is defined: int mlockall(int) This function is defined: void *mmap(void *, size_t, int, int, int, off_t) This function is defined: int mprotect(void *, size_t, int) This function is defined: int msync(void *, size_t, int) This function is defined: int munlock(const void *, size_t) This function is defined: int munlockall(void) This function is defined: int munmap(void *, size_t) This function is defined: int posix_madvise(void *, size_t, int) This function is defined: int posix_mem_offset(const void *restrict, size_t, off_t *restrict, size_t *restrict, int *restrict) This function is defined: int posix_typed_mem_get_info(int, struct posix_typed_mem_info *) This function is defined: int posix_typed_mem_open(const char *, int, int) This function is defined: int shm_open(const char *, int, mode_t) This function is defined: int shm_unlink(const char *)