for errors (in which case `errno' is set). A successful `mmap' call
deallocates any previous mapping for the affected region. */
+__caddr_t __mmap __P ((__caddr_t __addr, size_t __len,
+ int __prot, int __flags, int __fd, __off_t __offset));
__caddr_t mmap __P ((__caddr_t __addr, size_t __len,
int __prot, int __flags, int __fd, __off_t __offset));
/* Deallocate any mapping for the region starting at ADDR and extending LEN
bytes. Returns 0 if successful, -1 for errors (and sets errno). */
+int __munmap __P ((__caddr_t __addr, size_t __len));
int munmap __P ((__caddr_t __addr, size_t __len));
/* Change the memory protection of the region starting at ADDR and