From 5818548de594c17e4b6f5cfc3cf25ae0702e2e3d Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Fri, 16 Feb 2024 00:39:50 +0200
Subject: update Go types

---
 internal/ioriotng.go    | 21 ---------------------
 internal/types/types.go | 48 ++++++++++++++++++++++++------------------------
 2 files changed, 24 insertions(+), 45 deletions(-)

(limited to 'internal')

diff --git a/internal/ioriotng.go b/internal/ioriotng.go
index f368c09..0cf97b0 100644
--- a/internal/ioriotng.go
+++ b/internal/ioriotng.go
@@ -63,27 +63,6 @@ func Run(flags flags.Flags) {
 		log.Println("Ringbuf data received", len(b), b)
 	}
 
-	/*
-		ctx, cancel := context.WithCancel(context.Background())
-		defer cancel()
-		var wg sync.WaitGroup
-		wg.Add(2)
-
-			go func() {
-				defer wg.Done()
-				for ev := range listenToEvents[types.FdEvent](ctx, bpfModule, "fd_event_map") {
-					fmt.Println(ev)
-				}
-			}()
-		go func() {
-			defer wg.Done()
-			for ev := range listenToEvents[types.OpenEvent](ctx, bpfModule, "open_event_map") {
-				fmt.Println(ev)
-			}
-		}()
-
-		wg.Wait()
-	*/
 	log.Println("Good bye")
 }
 
diff --git a/internal/types/types.go b/internal/types/types.go
index c4ea2ad..473339f 100644
--- a/internal/types/types.go
+++ b/internal/types/types.go
@@ -1,34 +1,34 @@
+// These types mirror the C types from types.bpf.h
 package types
 
-import "fmt"
+const (
+	MAX_FILENAME_LENGTH = 256
+	MAX_PROGNAME_LENGTH = 16
+)
 
-type OpenEvent struct {
-	FD        int32
-	TID       uint32
-	EnterTime uint64
-	ExitTime  uint64
-	Filename  [256]byte // TODO, use same value as in ioriot.bpf.h
-	Comm      [16]byte
-}
+const (
+	OPENAT_ENTER_OP_ID = iota + 1
+	OPENAT_EXIT_OP_ID
+	CLOSE_ENTER_OP_ID
+	CLOSE_EXIT_OP_ID
+)
 
-func (e OpenEvent) String() string {
-	filename := e.Filename[:]
-	comm := e.Comm[:]
-	duration := float64(e.ExitTime-e.EnterTime) / float64(1_000_000)
-	return fmt.Sprintf("time:(%v=(%v-%v)/1mio) tid:%d fd:%d filename:%s, comm:%s",
-		duration, e.EnterTime, e.ExitTime, e.TID, e.FD, string(filename), string(comm))
+type NullEvent struct {
+	Tid  uint32
+	Time uint64
 }
 
 type FdEvent struct {
-	FD        int32
-	OpID      int32
-	TID       uint32
-	EnterTime uint64
-	ExitTime  uint64
+	NullEvent
+	Fd int32
 }
 
-func (e FdEvent) String() string {
-	duration := float64(e.ExitTime-e.EnterTime) / float64(1_000_000)
-	return fmt.Sprintf("time:(%vms=(%v-%v)/1mio) opId:%d tid:%v fd:%v",
-		duration, e.EnterTime, e.ExitTime, e.OpID, e.TID, e.FD)
+type OpenatEnterEvent struct {
+	NullEvent
+	Filename [MAX_FILENAME_LENGTH]byte
+	Comm     [MAX_PROGNAME_LENGTH]byte
 }
+
+// TODO: Move Flags type struct to here, too
+
+// duration := float64(e.ExitTime-e.EnterTime) / float64(1_000_000)
-- 
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