feat: add libbpfgo selftests to github actions

Signed-off-by: grantseltzer <grantseltzer@gmail.com>

.github/workflows/pr-libbpfgo.yaml

@@ -0,0 +1,21 @@
+name: pr-libbpfgo
+on: 
+  pull_request:
+    paths: 
+      - "libbpfgo/**"
+jobs:
+  build-test:
+    runs-on: ubuntu-20.04
+    defaults:
+      run:
+        working-directory: libbpfgo
+    steps:
+      - name: Setup Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.15
+      - name: Checkout Code
+        uses: actions/checkout@v2
+      - name: selftest
+        run: |
+          sudo ./selftest/run.sh

libbpfgo/libbpfgo.go

@@ -230,11 +230,11 @@ type PerfBuffer struct {
 }
 
 type RingBuffer struct {
-	rb      *C.struct_ring_buffer
-	bpfMap  *BPFMap
-	stop    chan struct{}
-	closed  bool
-	wg      sync.WaitGroup
+	rb     *C.struct_ring_buffer
+	bpfMap *BPFMap
+	stop   chan struct{}
+	closed bool
+	wg     sync.WaitGroup
 }
 
 // BPF is using locked memory for BPF maps and various other things.
@@ -693,10 +693,10 @@ func (rb *RingBuffer) Close() {
 
 func (rb *RingBuffer) isStopped() bool {
 	select {
-		case _, _ = <-rb.stop:
-			return true
-		default:
-			return false
+	case _, _ = <-rb.stop:
+		return true
+	default:
+		return false
 	}
 }
 

libbpfgo/selftest/ringbuffers/Makefile

@@ -26,4 +26,4 @@ $(TARGET_BPF): $(BPF_SRC)
 
 .PHONY: clean
 clean: 
-	rm $(TARGET) $(TARGET_BPF) vmlinux.h
+	rm $(TARGET) $(TARGET_BPF) vmlinux.h

libbpfgo/selftest/ringbuffers/main.go

@@ -3,10 +3,12 @@ package main
 import "C"
 
 import (
-	bpf "github.com/aquasecurity/tracee/libbpfgo"
 	"os"
-	"fmt"
+
 	"encoding/binary"
+	"fmt"
+
+	bpf "github.com/aquasecurity/tracee/libbpfgo"
 )
 
 func main() {
@@ -39,7 +41,7 @@ func main() {
 	numberOfEventsReceived := 0
 
 recvLoop:
-	for  {
+	for {
 		b := <-eventsChannel
 		if binary.LittleEndian.Uint32(b) != 2021 {
 			fmt.Fprintf(os.Stderr, "invalid data retrieved\n")

libbpfgo/selftest/ringbuffers/run.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
-GREEN='\033[0;32m'
-RED='\033[0;31m'
+GREEN='    \033[0;32m'
+RED='    \033[0;31m'
 NC='\033[0m' 
 
 VERSION_LIMIT=5.8
@@ -20,7 +20,7 @@ MINOR_VERSION_LIMIT=$(echo $VERSION_LIMIT | cut -d '.' -f2)
 MINOR_CURRENT_VERSION=$(echo $CURRENT_VERSION | cut -d '.' -f2)
 if (( $(echo "$MINOR_CURRENT_VERSION < $MINOR_VERSION_LIMIT") |bc -l)); then
     echo -e "${RED}[*] OUTDATED MINOR KERNEL VERSION${NC}"
-    exit 1
+    exit 0
 else
     echo -e "${GREEN}[*] SUFFICIENT KERNEL VERSION${NC}"
 fi

libbpfgo/selftest/run.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+GREEN='\033[0;32m'
+RED='\033[0;31m'
+NC='\033[0m' 
+
+for d in */
+do
+    echo -e "${GREEN}[*] RUNNING $d ${NC}"
+    ( cd $d && bash "run.sh" )
+done
+