features: rename HaveProgType API

In order to be in line with other naming schemes throughout
the library this commit deprecates HaveProgType() in favor
of HaveProgamType().

Signed-off-by: Robin Gögge <r.goegge@gmail.com>

features/prog.go

@@ -15,7 +15,7 @@ import (
 )
 
 func init() {
-	pc.progTypes = make(map[ebpf.ProgramType]error)
+	pc.types = make(map[ebpf.ProgramType]error)
 	pc.helpers = make(map[ebpf.ProgramType]map[asm.BuiltinFunc]error)
 	allocHelperCache()
 }
@@ -31,8 +31,8 @@ var (
 )
 
 type progCache struct {
-	typeMu    sync.Mutex
-	progTypes map[ebpf.ProgramType]error
+	typeMu sync.Mutex
+	types  map[ebpf.ProgramType]error
 
 	helperMu sync.Mutex
 	helpers  map[ebpf.ProgramType]map[asm.BuiltinFunc]error
@@ -95,17 +95,22 @@ func createProgLoadAttr(pt ebpf.ProgramType, helper asm.BuiltinFunc) (*sys.ProgL
 
 // HaveProgType probes the running kernel for the availability of the specified program type.
 //
+// Deprecated: use HaveProgramType() instead.
+var HaveProgType = HaveProgramType
+
+// HaveProgramType probes the running kernel for the availability of the specified program type.
+//
 // See the package documentation for the meaning of the error return value.
-func HaveProgType(pt ebpf.ProgramType) error {
-	if err := validateProgType(pt); err != nil {
+func HaveProgramType(pt ebpf.ProgramType) error {
+	if err := validateProgramType(pt); err != nil {
 		return err
 	}
 
-	return haveProgType(pt)
+	return haveProgramType(pt)
 
 }
 
-func validateProgType(pt ebpf.ProgramType) error {
+func validateProgramType(pt ebpf.ProgramType) error {
 	if pt > pt.Max() {
 		return os.ErrInvalid
 	}
@@ -120,10 +125,10 @@ func validateProgType(pt ebpf.ProgramType) error {
 	return nil
 }
 
-func haveProgType(pt ebpf.ProgramType) error {
+func haveProgramType(pt ebpf.ProgramType) error {
 	pc.typeMu.Lock()
 	defer pc.typeMu.Unlock()
-	if err, ok := pc.progTypes[pt]; ok {
+	if err, ok := pc.types[pt]; ok {
 		return err
 	}
 
@@ -154,7 +159,7 @@ func haveProgType(pt ebpf.ProgramType) error {
 		fd.Close()
 	}
 
-	pc.progTypes[pt] = err
+	pc.types[pt] = err
 
 	return err
 }
@@ -173,7 +178,7 @@ func haveProgType(pt ebpf.ProgramType) error {
 //
 // Probe results are cached and persist throughout any process capability changes.
 func HaveProgramHelper(pt ebpf.ProgramType, helper asm.BuiltinFunc) error {
-	if err := validateProgType(pt); err != nil {
+	if err := validateProgramType(pt); err != nil {
 		return err
 	}
 

features/prog_test.go

@@ -47,7 +47,7 @@ var progTypeMinVersion = map[ebpf.ProgramType]string{
 	ebpf.Syscall:               "5.14",
 }
 
-func TestHaveProgType(t *testing.T) {
+func TestHaveProgramType(t *testing.T) {
 	for progType := ebpf.UnspecifiedProgram + 1; progType <= progType.Max(); progType++ {
 		// Need inner loop copy to make use of t.Parallel()
 		pt := progType
@@ -69,7 +69,7 @@ func TestHaveProgType(t *testing.T) {
 			}
 			testutils.SkipOnOldKernel(t, minVersion, feature)
 
-			if err := HaveProgType(pt); err != nil {
+			if err := HaveProgramType(pt); err != nil {
 				if pt == ebpf.LircMode2 {
 					// CI kernels are built with CONFIG_BPF_LIRC_MODE2, but some
 					// mainstream distro's don't ship with it. Make this prog type
@@ -84,14 +84,14 @@ func TestHaveProgType(t *testing.T) {
 	}
 }
 
-func TestHaveProgTypeUnsupported(t *testing.T) {
-	if err := haveProgType(ebpf.ProgramType(math.MaxUint32)); err != ebpf.ErrNotSupported {
+func TestHaveProgramTypeUnsupported(t *testing.T) {
+	if err := haveProgramType(ebpf.ProgramType(math.MaxUint32)); err != ebpf.ErrNotSupported {
 		t.Fatalf("Expected ebpf.ErrNotSupported but was: %v", err)
 	}
 }
 
-func TestHaveProgTypeInvalid(t *testing.T) {
-	if err := HaveProgType(ebpf.ProgramType(math.MaxUint32)); err != os.ErrInvalid {
+func TestHaveProgramTypeInvalid(t *testing.T) {
+	if err := HaveProgramType(ebpf.ProgramType(math.MaxUint32)); err != os.ErrInvalid {
 		t.Fatalf("Expected os.ErrInvalid but was: %v", err)
 	}
 }