Adding FFI functions for Hyperlight Guest CAPI

.github/workflows/ValidatePullRequest.yml

@@ -74,7 +74,7 @@ jobs:
     steps:
     - uses: actions/checkout@v5
     - name: Spell Check Repo
-      uses: crate-ci/typos@v1.37.1
+      uses: crate-ci/typos@v1.38.1
 
   license-headers:
     name: check license headers
@@ -98,9 +98,8 @@ jobs:
     if: always()
     runs-on: ubuntu-latest
     steps:
-    - name: Previous jobs succeeded
-      if: ${{ !(contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')) }}
-      run: exit 0
-    - name: Previous jobs failed
-      if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
-      run: exit 1
+      # Calculate the exit status of the whole CI workflow.
+      # If all dependent jobs were successful, this exits with 0 (and the outcome job continues successfully).
+      # If a some dependent job has failed, this exits with 1.
+      - name: calculate the correct exit status
+        run: jq --exit-status 'all(.result == "success" or .result == "skipped")' <<< '${{ toJson(needs) }}'

Justfile

@@ -372,7 +372,7 @@ build-fuzzer fuzz-target:
 ###################
 
 gen-all-fbs-rust-code:
-    for fbs in `find src -name "*.fbs"`; do flatc -r --rust-module-root-file --gen-all -o ./src/hyperlight_common/src/flatbuffers/ $fbs; done
+    flatc --rust --rust-module-root-file --gen-all -o ./src/hyperlight_common/src/flatbuffers/ ./src/schema/all.fbs
     just fmt-apply
 
 install-vcpkg:

docs/how-to-use-flatbuffers.md

@@ -1,6 +1,6 @@
 # How to use FlatBuffers
 
-> Note: the last generation of the flatbuffer code was with done with flatc version 25.2.10 (i.e., the last version as of May 1st, 2025).
+> Note: the last generation of the flatbuffer code was with done with flatc version 25.9.23 (i.e., the last version as of Oct 2nd, 2025).
 
 Flatbuffers is used to serialize and deserialize some data structures.
 
@@ -19,9 +19,3 @@ We recommend building `flatc` from source. To generate rust code, use
 ```console
 just gen-all-fbs-rust-code
 ```
-
-### Note about generated code
-
-Because we invoke `flatc` multiple times when generating the Rust code, the `mod.rs` generated in `./src/hyperlight_common/src/flatbuffers` is overwritten multiple times and will likely be incorrect. Make sure to manually inspect and if necessary update this file before continuing with your changes as certain modules might be missing. After fixing `mod.rs`, you might need to re-run `just fmt`, since it might not have applied to all generated files if your `mod.rs` was invalid.
-
->`flatc` does support passing multiple schema files (e.g. it is possible to pass `.\src\schema\*.fbs`), so we could regenerate all the files each time a change was made, however that generates incorrect code (see [here](https://github.com/google/flatbuffers/issues/6800) for details).