24 lines
517 B
C
24 lines
517 B
C
|
/* Maps and unmaps a file and verifies that the mapped region is
|
||
|
|
inaccessible afterward. */
|
||
|
|
|
||
|
|
#include <syscall.h>
|
||
|
|
#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);
|
||
|
|
}
|