Export system type in startup record.

Author: panhania

crates/rrg/src/startup.rs

@@ -14,6 +14,7 @@ pub struct Startup {
     /// Time at which the agent was started.
     pub agent_started: std::time::SystemTime,
     // TOOD(@panhania): Add support for the `os_booted` field.
+    pub os_kind: ospect::os::Kind,
 }
 
 impl Startup {
@@ -31,6 +32,7 @@ impl Startup {
             path,
             args: std::env::args().collect(),
             agent_started: std::time::SystemTime::now(),
+            os_kind: ospect::os::kind(),
         }
     }
 }
@@ -105,6 +107,7 @@ impl Into<rrg_proto::startup::Startup> for Startup {
         }
         proto.set_args(self.args.into());
         proto.set_agent_startup_time(into_timestamp(self.agent_started));
+        proto.set_os_type(self.os_kind.into());
 
         proto
     }

proto/rrg/startup.proto

@@ -8,6 +8,7 @@ package rrg.startup;
 
 import "google/protobuf/timestamp.proto";
 import "rrg/fs.proto";
+import "rrg/os.proto";
 
 // Information about the agent startup.
 //
@@ -24,6 +25,8 @@ message Startup {
   google.protobuf.Timestamp agent_startup_time = 3;
   // Time at which the operating system booted.
   google.protobuf.Timestamp os_boot_time = 4;
+  // Type of the operating system.
+  rrg.os.Type os_type = 6;
 }
 
 // Metadata about the RRG agent.