Pintos: pintos/src/tests/vm/mmap-over-code.c Source File

00001 /* Verifies that mapping over the code segment is disallowed. */
00002 
00003 #include <stdint.h>
00004 #include <round.h>
00005 #include <syscall.h>
00006 #include "tests/lib.h"
00007 #include "tests/main.h"
00008 
00009 void
00010 test_main (void) 
00011 {
00012   uintptr_t test_main_page = ROUND_DOWN ((uintptr_t) test_main, 4096);
00013   int handle;
00014   
00015   CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
00016   CHECK (mmap (handle, (void *) test_main_page) == MAP_FAILED,
00017          "try to mmap over code segment");
00018 }
00019