pin: fix a bunch of fd leaks in tests

The new pin package didn't import fdtrace.TestMain until now, which
is why the leaks went by unnoticed.

Signed-off-by: Lorenz Bauer <[email protected]>

Author: lmb

pin/load.go

@@ -2,6 +2,7 @@ package pin
 
 import (
 	"fmt"
+	"io"
 
 	"github.com/cilium/ebpf"
 	"github.com/cilium/ebpf/internal/sys"
@@ -11,6 +12,7 @@ import (
 // Pinner is an interface implemented by all eBPF objects that support pinning
 // to a bpf virtual filesystem.
 type Pinner interface {
+	io.Closer
 	Pin(string) error
 }
 

pin/load_test.go

@@ -9,6 +9,7 @@ import (
 	"github.com/cilium/ebpf"
 	"github.com/cilium/ebpf/asm"
 	"github.com/cilium/ebpf/internal/testutils"
+	"github.com/cilium/ebpf/internal/testutils/fdtrace"
 )
 
 func mustPinnedProgram(t *testing.T, path string) *ebpf.Program {
@@ -77,9 +78,15 @@ func TestLoad(t *testing.T) {
 
 	m, err := Load(mpath, nil)
 	qt.Assert(t, qt.IsNil(err))
+	defer m.Close()
 	qt.Assert(t, qt.Satisfies(m, testutils.Contains[*ebpf.Map]))
 
 	p, err := Load(ppath, nil)
 	qt.Assert(t, qt.IsNil(err))
+	defer p.Close()
 	qt.Assert(t, qt.Satisfies(p, testutils.Contains[*ebpf.Program]))
 }
+
+func TestMain(m *testing.M) {
+	fdtrace.TestMain(m)
+}

pin/walk_test.go

@@ -27,6 +27,10 @@ func TestWalkDir(t *testing.T) {
 	bpffn := func(path string, d fs.DirEntry, obj Pinner, err error) error {
 		qt.Assert(t, qt.IsNil(err))
 
+		if obj != nil {
+			defer obj.Close()
+		}
+
 		if path == "." {
 			return nil
 		}