CS318 - Pintos
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mmap-unmap.c
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1 /** Maps and unmaps a file and verifies that the mapped region is
2  inaccessible afterward. */
3 
4 #include <syscall.h>
5 #include "tests/vm/sample.inc"
6 #include "tests/lib.h"
7 #include "tests/main.h"
8 
9 #define ACTUAL ((void *) 0x10000000)
10 
11 void
12 test_main (void)
13 {
14  int handle;
15  mapid_t map;
16 
17  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
18  CHECK ((map = mmap (handle, ACTUAL)) != MAP_FAILED, "mmap \"sample.txt\"");
19 
20  munmap (map);
21 
22  fail ("unmapped memory is readable (%d)", *(int *) ACTUAL);
23 }
lib.h
CHECK
#define CHECK(SUCCESS,...)
Takes an expression to test for SUCCESS and a message, which may include printf-style arguments.
Definition: lib.h:29
MAP_FAILED
#define MAP_FAILED
Definition: syscall.h:13
open
int open(const char *file)
Definition: syscall.c:103
fail
void fail(const char *format,...)
Definition: lib.c:40
main.h
mmap
mapid_t mmap(int fd, void *addr)
Project 3 and optionally project 4.
Definition: syscall.c:145
ACTUAL
#define ACTUAL
Maps and unmaps a file and verifies that the mapped region is inaccessible afterward.
Definition: mmap-unmap.c:9
munmap
void munmap(mapid_t mapid)
Definition: syscall.c:151
mapid_t
int mapid_t
Map region identifier.
Definition: syscall.h:12
test_main
void test_main(void)
tests/main.h
Definition: mmap-unmap.c:12
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