[SOLVED] CS代考计算机代写 /* Maps and unmaps a file and verifies that the mapped region is

/* Maps and unmaps a file and verifies that the mapped region is
inaccessible afterward. */

#include
#include “tests/vm/sample.inc”
#include “tests/lib.h”
#include “tests/main.h”

#define ACTUAL ((void *) 0x10000000)

void
test_main (void)
{
int handle;
mapid_t map;

CHECK ((handle = open (“sample.txt”)) > 1, “open ”sample.txt””);
CHECK ((map = mmap (handle, ACTUAL)) != MAP_FAILED, “mmap ”sample.txt””);

munmap (map);

fail (“unmapped memory is readable (%d)”, *(int *) ACTUAL);
}