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Posted to dev@teaclave.apache.org by GitBox <gi...@apache.org> on 2022/09/20 20:48:32 UTC

[GitHub] [incubator-teaclave-trustzone-sdk] HakonToemte opened a new issue, #94: ./hello_world-rs not found in shared folder

HakonToemte opened a new issue, #94:
URL: https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/94

Hello, I wish to develop a new CA/TA in OPTEE using Rust with QEMUv8. I have been following this [guide](https://github.com/apache/incubator-teaclave-trustzone-sdk/blob/master/README.md), and created a shared folder to run these applications in QEMU. I am now trying to see if i can alter hello_world-rs to use a different number than the original example does. But even though it seems that i have succesfully shared the installed examples, I get error: not found.
![Issue](https://user-images.githubusercontent.com/55509202/191357278-7f8db593-b575-403f-8e5c-01797bcfde87.png)

I found this [issue](https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/67), and I can run hello_world-rs, but that's the original and unaltered example. I want to run my new, altered version.
![image](https://user-images.githubusercontent.com/55509202/191358267-b873b283-622f-406f-b9dd-5c24ed18456e.png)
The file should be executable.
![image](https://user-images.githubusercontent.com/55509202/191360991-bc538270-1ff6-4e63-9004-e39a87a65660.png)

I am very thankful for any help with this!

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[GitHub] [incubator-teaclave-trustzone-sdk] HakonToemte commented on issue #94: ./hello_world-rs not found in shared folder

Posted by GitBox <gi...@apache.org>.

HakonToemte commented on issue #94:
URL: https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/94#issuecomment-1254935750

   That was been tremendous help, thank you very much!


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[GitHub] [incubator-teaclave-trustzone-sdk] HakonToemte commented on issue #94: ./hello_world-rs not found in shared folder

Posted by GitBox <gi...@apache.org>.

HakonToemte commented on issue #94:
URL: https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/94#issuecomment-1253763258

   ![image](https://user-images.githubusercontent.com/55509202/191520388-4a8574a4-f1c6-43ac-9673-17824a724e0d.png)
   It works now :)
   So now if i want to change the value, i just change 29 to 30 for example, then compile the example again and update the shared_folder? I ask because i often end up doing something wrong, and then normal world won't start and i end up building everything from scratch again.
   If I want to create a new CA/TA, is there a good guide for that? 
   Either way thanks :)


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[GitHub] [incubator-teaclave-trustzone-sdk] DemesneGH commented on issue #94: ./hello_world-rs not found in shared folder

Posted by GitBox <gi...@apache.org>.

DemesneGH commented on issue #94:
URL: https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/94#issuecomment-1253488204

   @HakonToemte It seems the `hello_world-rs` you built is a 32-bit (arm) ELF which is not compatible with the 64-bit (aarch64) QEMUv8 platform. Suggest to unset `ARCH`  and rebuild the host app, reference: https://github.com/apache/incubator-teaclave-trustzone-sdk#build--install.


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[GitHub] [incubator-teaclave-trustzone-sdk] DemesneGH commented on issue #94: ./hello_world-rs not found in shared folder

Posted by GitBox <gi...@apache.org>.

DemesneGH commented on issue #94:
URL: https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/94#issuecomment-1253143751

   Hi @HakonToemte ,
   Seems this error occurs in some cases, but I've not reproduced it. Let's check these items to figure it out:
   - What's your building environment? We recommend using our docker `teaclave/teaclave-trustzone-sdk-build:0.3.0`. I'm not sure if the building environment causes this error.
   - Check the file type in your building environment: `file ./hello_world-rs`
   - Check the dependency libraries in QEMU: `# ldd ./hello_world-rs`
   
   Thanks!


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[GitHub] [incubator-teaclave-trustzone-sdk] DemesneGH commented on issue #94: ./hello_world-rs not found in shared folder

Posted by GitBox <gi...@apache.org>.

DemesneGH commented on issue #94:
URL: https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/94#issuecomment-1254528931

> then compile the example again and update the shared_folder

Yes, you just need to recompile the example you've modified:

```
$ make -C examples/your-example
```

Then copy the CA and TA into shared_folder:
```
$ cp example/your-example/host/target/aarch64-unknown-linux-gnu/release/[your CA] path/to/shared/folder
$ cp example/your-example/ta/target/aarch64-unknown-optee-trustzone/release/[your TA] path/to/shared/folder
```
After copying ta into `/lib/optee_armtz` you can run the new CA you built.

> If I want to create a new CA/TA, is there a good guide for that?

There is no documentation about writing a new CA/TA now. You can follow these steps to write your Rust example:
1. Duplicate the `hello_world-rs` example and modify the code upon it.
2. Decide commands the host app sends to TA, and modify `proto/src/lib.rs`
3. In host:
- modify the app name in `host/Makefile` and `host/Cargo.toml`
- write your logic in host/src/main.rs
4. In TA:
- generate a random `uuid` and modify `uuid.txt`
- write your logic in ta/src/main.rs
5. build your example

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[GitHub] [incubator-teaclave-trustzone-sdk] HakonToemte closed issue #94: ./hello_world-rs not found in shared folder

Posted by GitBox <gi...@apache.org>.

HakonToemte closed issue #94: ./hello_world-rs not found in shared folder
URL: https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/94


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