Add bootcontext capability for process creation

api/process.capnp

@@ -9,26 +9,18 @@ $Go.import("github.com/wetware/pkg/api/process");
 interface Executor {
     # Executor has the ability to create and run WASM processes given the
     # WASM bytecode.
-    exec @0 (bytecode :Data, ppid :UInt32, bootstrapClient :Capability) -> (process :Process);
+    exec @0 (bytecode :Data, ppid :UInt32, bctx :BootContext) -> (process :Process);
     # Exec creates an runs a process from the provided bytecode. Optionally, a
     # capability can be passed through the `cap` parameter. This capability will
     # be available at the process bootContext.
     #
     # The Process capability is associated to the created process.
-    execCached @1 (cid :Text, ppid :UInt32, bootstrapClient :Capability) -> (process :Process);
+    execCached @1 (cid :Text, ppid :UInt32, bctx :BootContext) -> (process :Process);
     # Same as Exec, but the bytecode is directly from the BytecodeRegistry.
     # Provides a significant performance improvement for medium to large
     # WASM streams.
 }
 
-interface Process {
-    # Process is a points to a running WASM process.
-    wait   @0 () -> (exitCode :UInt32);
-    # Wait until a process finishes running.
-    kill   @1 () -> ();
-    # Kill the process.
-}
-
 interface BytecodeCache {
     # BytecodeCache is used to store WASM byte code. May be implemented with
     # anchors or any other means.
@@ -39,3 +31,27 @@ interface BytecodeCache {
     has @2 (cid :Text) -> (has :Bool);
     # Has returns true if a bytecode identified by the cid has been previously stored.
 }
+
+interface Process {
+    # Process is a points to a running WASM process.
+    wait   @0 () -> (exitCode :UInt32);
+    # Wait until a process finishes running.
+    kill   @1 () -> ();
+    # Kill the process.
+}
+
+interface BootContext {
+    # Every process is given a BootContext containing the arguments and capabilitis
+    # passed by the parent process.
+    pid  @0 () -> (pid :UInt32);
+    # PID of the process.
+    cid  @1 () -> (cid :Text);
+    # CID of the process bytecode.
+    args @2 () -> (args :List(Text));
+    # CLI arguments.
+    caps @3 () -> (caps :List(Capability));
+    # Capabilities.
+
+    setPid @4 (pid :UInt32) -> ();
+    setCid @5 (cid :Text) -> ();
+}