[SOLVED] CS代考计算机代写 /* Verifies that mapping over the data segment is disallowed. */

/* Verifies that mapping over the data segment is disallowed. */

#include
#include
#include
#include “tests/lib.h”
#include “tests/main.h”

static char x;

void
test_main (void)
{
uintptr_t x_page = ROUND_DOWN ((uintptr_t) &x, 4096);
int handle;

CHECK ((handle = open (“sample.txt”)) > 1, “open ”sample.txt””);
CHECK (mmap (handle, (void *) x_page) == MAP_FAILED,
“try to mmap over data segment”);
}