Noux application

[Joseph Lee]

Hi,


Here is the code that i put in tz_vmm.

    int fd;
    char buffer[10];
    char const *file_name = "/home/test.txt";

   if( ( fd = open(file_name, O_WRONLY | O_CREAT) ) != -1 )
             write( fd, "TEST ", 4 );
   else
             printf("File could not be opened");
    close( fd );


And also I configure ram_fs for tz_vmm access to the file system as
follows.

   <config>
           <content>
                <dir name="home">
                        <inline name="test.txt">
                        </inline>
                </dir>
            </content>
            <policy label="tz_vmm -> root" root="/" />
            <policy label="tz_vmm -> home" root="/home"
writeable="yes" />
        </config>

Please tell me if there is something wrong or missing ?

Thanks and best regards,

On Mon, Oct 26, 2015 at 11:07 AM, Christian Helmuth <
christian.helmuth at ...1...> wrote:

> Hello,
>
> On Fri, Oct 23, 2015 at 12:44:52AM +0200, Joseph Lee wrote:
> > I am trying to test the techniques you mentioned about accessing a
> function
> > of a Noux process from tz_vmm. I put a file in a ram_fs and allow access
> to
> > both my noux process and tz_vmm. When i run the uImage, the file is
> > accessed by the noux process successfully but the tz_vmm process can't
> > access it.  Instead i got the following log message. what is missing?
> >
> >           init -> tz_vmm -> vmm: unresolved pagefault at ip=73930
> sp=e01fcf28
> >           core -> pager_ep: cannot submit unknown signal context
>
> You again triggered a page fault, i.e., segmentation fault, maybe due
> to an uninitialized pointer. To help you we should post your changes
> to tz_vmm for ram_fs access to this list. Then, we may investigate.
>
> Greets
> --
> Christian Helmuth
> Genode Labs
>
> http://www.genode-labs.com/ · http://genode.org/
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