Hit "RuntimePermission createClassLoader" while running java version of nachos

Asked Jan 02 '13 at 13:08

Active Jan 02 '13 at 13:12

Viewed 761 times

I tried to run the java version of Nachos on Windows 7 and Redhat Linux, but both failed due to RuntimePermission problem as below.

user\nachos\proj1> java nachos.machine.Machine nachos.conf

 nachos 5.0j initializing... config interrupt timer user-check

 Lacked permission: (java.lang.RuntimePermission createClassLoader)

Exception in thread "main" nachos.machine.AssertionFailureError
                at nachos.machine.Lib.assertTrue(Lib.java:77)
                at nachos.machine.Lib.assertNotReached(Lib.java:96)
                at nachos.machine.Lib.checkMethod(Lib.java:565)
                at nachos.machine.Machine.checkUserClasses(Machine.java:262)
                at nachos.machine.Machine.main(Machine.java:57)

Searching on Google using keywords RuntimePermission and createClassLoader, found some solutions that need to modify the file: $(JAVA HOME)\jre\lib\security\java.policy. So I appended following lines to it.

grant {
    permission java.security.AllPermission;
};

However, it still can't work. Can anyone provide any clues on this problem? Thanks.

edited Jan 02 '13 at 13:12

asked Jan 02 '13 at 13:08

thinkhy

Two days passed, but still no person answer my question. Seems few people are interested with Nachos and Java here. Sigh ... – thinkhy Jan 04 '13 at 15:47
hello any luck with your problem? I just hit that problem today... looking for an answer myself. – Buddha Apr 30 '13 at 02:48
Yes, luck enough, problem resolved. Solution is very simple. At nachos.machine.Machine.checkUserClasses(Machine.java:259), comment this line: // checkUserClasses(); – thinkhy Aug 18 '13 at 04:26
Thanks.... But doesn't it cause any other problems? – Buddha Sep 09 '13 at 16:46
@Buddha Til now, it works fine. – thinkhy Nov 20 '13 at 08:17

Hit "RuntimePermission createClassLoader" while running java version of nachos

0 Answers0