PROTECTION
ENT(PROTECTION, -EILSEQ, "protection"),
addr = mmap(ADDR, LENGTH, PROTECTION, FLAGS, 0, 0);
addr = mmap(NULL, length, PROTECTION, mmap_flags, fd, 0);
void *haddr = mmap((void *)suggested_addr, length, PROTECTION, FLAGS, fd, 0);
void *daddr = mmap((void *)suggested_addr, length, PROTECTION, FLAGS, fd, 0);
void *vaddr = mmap((void *)suggested_addr, length, PROTECTION, FLAGS, fd, 0);