remove deprecated function

utils.go

@@ -132,7 +132,7 @@ func GetSyscallFnNameWithSymFile(name string, symFile string) (string, error) {
 	}
 
 	kallSymsLocker.Lock()
-	_, exist := kallsymsCache[name];
+	_, exist := kallsymsCache[name]
 	kallSymsLocker.Unlock()
 
 	if exist {
@@ -158,7 +158,7 @@ const defaultSymFile = "/proc/kallsyms"
 // for older syscall functions to run on newer kernels
 func getSyscallName(name string, symFile string) (string, error) {
 	// Get kernel symbols
-	syms, err := ioutil.ReadFile(symFile)
+	syms, err := os.ReadFile(symFile)
 	if err != nil {
 		return "", err
 	}

utils_test.go

@@ -1,6 +1,7 @@
 package manager
 
 import (
+	"strings"
 	"testing"
 )
 
@@ -31,3 +32,16 @@ func TestGenerateEventName(t *testing.T) {
 		t.Errorf("Test should failed as event name length is too big for the kernel and free space for function Name is < %d", minFunctionNameLen)
 	}
 }
+
+func TestGetSyscallFnNameWithSymFile(t *testing.T) {
+	expectedFnName := "sys_exit"
+
+	fnName, err := GetSyscallFnNameWithSymFile(expectedFnName, "")
+	if err != nil {
+		t.Error(err)
+	}
+	if !strings.HasSuffix(fnName, expectedFnName) {
+		t.Errorf("Expected function name %s, but got %s", expectedFnName, fnName)
+	}
+	t.Logf("Expected function name %s, got %s", expectedFnName, fnName)
+}