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.helm...@genode-labs.com> 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/
> https://twitter.com/GenodeLabs · /ˈdʒiː.nəʊd/
>
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