#include <sys/mman.h>
void *mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
#include <sys/mman.h>
int msync(void *addr, size_t len, int flags);
#include <sys/mman.h>
int munmap(void *addr, size_t len);
SYNOPSIS
#include <sys/mman.h>
void *mmap(void *start, size_t length, int prot, int flags,
int fd, off_t offset);
int munmap(void *start, size_t length);
PROT_EXEC Pages may be executed.(页可以执行<在另外一些著作上也成为段,如上个帖子中>)
PROT_READ Pages may be read.(页可以读)
PROT_WRITE Pages may be written.(页可以写)
PROT_NONE Pages may not be accessed.(页不能访问)
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