Clean up code and fix linter errors

profile/get.go

@@ -16,8 +16,11 @@ import (
 )
 
 const (
+	// UnidentifiedProfileID is the profile ID used for unidentified processes.
 	UnidentifiedProfileID = "_unidentified"
-	SystemProfileID       = "_system"
+
+	// SystemProfileID is the profile ID used for the system/kernel.
+	SystemProfileID = "_system"
 )
 
 var getProfileSingleInflight singleflight.Group
@@ -25,7 +28,7 @@ var getProfileSingleInflight singleflight.Group
 // GetProfile fetches a profile. This function ensure that the profile loaded
 // is shared among all callers. You must always supply both the scopedID and
 // linkedPath parameters whenever available.
-func GetProfile(source profileSource, id, linkedPath string) (
+func GetProfile(source profileSource, id, linkedPath string) ( //nolint:gocognit
 	profile *Profile,
 	newProfile bool,
 	err error,

profile/module.go

@@ -38,6 +38,11 @@ func start() error {
 		return err
 	}
 
+	err = registerRevisionProvider()
+	if err != nil {
+		return err
+	}
+
 	err = startProfileUpdateChecker()
 	if err != nil {
 		return err

profile/profile-layered-provider.go

@@ -4,8 +4,6 @@ import (
 	"errors"
 	"strings"
 
-	"github.com/safing/portbase/database"
-
 	"github.com/safing/portbase/database/record"
 	"github.com/safing/portbase/runtime"
 )
@@ -16,6 +14,7 @@ const (
 
 var (
 	errProfileNotActive = errors.New("profile not active")
+	errNoLayeredProfile = errors.New("profile has no layered profile")
 )
 
 func registerRevisionProvider() error {
@@ -38,7 +37,7 @@ func getRevision(key string) ([]record.Record, error) {
 	// Get layered profile.
 	layeredProfile := profile.LayeredProfile()
 	if layeredProfile == nil {
-		return nil, database.ErrNotFound
+		return nil, errNoLayeredProfile
 	}
 
 	// Update profiles if necessary.

profile/profile-layered.go

@@ -10,17 +10,11 @@ import (
 
 	"github.com/safing/portmaster/status"
 
-	"github.com/tevino/abool"
-
 	"github.com/safing/portbase/config"
 	"github.com/safing/portmaster/intel"
 	"github.com/safing/portmaster/profile/endpoints"
 )
 
-var (
-	no = abool.NewBool(false)
-)
-
 // LayeredProfile combines multiple Profiles.
 type LayeredProfile struct {
 	record.Base
@@ -29,11 +23,8 @@ type LayeredProfile struct {
 	localProfile *Profile
 	layers       []*Profile
 
-	LayerIDs        []string
-	RevisionCounter uint64
-
-	validityFlag       *abool.AtomicBool
-	validityFlagLock   sync.Mutex
+	LayerIDs           []string
+	RevisionCounter    uint64
 	globalValidityFlag *config.ValidityFlag
 
 	securityLevel *uint32
@@ -63,7 +54,6 @@ func NewLayeredProfile(localProfile *Profile) *LayeredProfile {
 		localProfile:       localProfile,
 		layers:             make([]*Profile, 0, len(localProfile.LinkedProfiles)+1),
 		LayerIDs:           make([]string, 0, len(localProfile.LinkedProfiles)+1),
-		validityFlag:       abool.NewBool(true),
 		globalValidityFlag: config.NewValidityFlag(),
 		securityLevel:      &securityLevelVal,
 	}
@@ -140,7 +130,7 @@ func (lp *LayeredProfile) LockForUsage() {
 	}
 }
 
-// LockForUsage unlocks the layered profile, including all layers individually.
+// UnlockForUsage unlocks the layered profile, including all layers individually.
 func (lp *LayeredProfile) UnlockForUsage() {
 	lp.RUnlock()
 	for _, layer := range lp.layers {
@@ -156,12 +146,6 @@ func (lp *LayeredProfile) LocalProfile() *Profile {
 	return lp.localProfile
 }
 
-func (lp *LayeredProfile) getValidityFlag() *abool.AtomicBool {
-	lp.validityFlagLock.Lock()
-	defer lp.validityFlagLock.Unlock()
-	return lp.validityFlag
-}
-
 // RevisionCnt returns the current profile revision counter.
 func (lp *LayeredProfile) RevisionCnt() (revisionCounter uint64) {
 	if lp == nil {
@@ -188,6 +172,7 @@ func (lp *LayeredProfile) MarkStillActive() {
 	}
 }
 
+// NeedsUpdate checks for outdated profiles.
 func (lp *LayeredProfile) NeedsUpdate() (outdated bool) {
 	lp.RLock()
 	defer lp.RUnlock()
@@ -207,7 +192,7 @@ func (lp *LayeredProfile) NeedsUpdate() (outdated bool) {
 	return false
 }
 
-// Update checks for updated profiles and replaces any outdated profiles.
+// Update checks for and replaces any outdated profiles.
 func (lp *LayeredProfile) Update() (revisionCounter uint64) {
 	lp.Lock()
 	defer lp.Unlock()
@@ -230,11 +215,6 @@ func (lp *LayeredProfile) Update() (revisionCounter uint64) {
 	}
 
 	if changed {
-		// reset validity flag
-		lp.validityFlagLock.Lock()
-		lp.validityFlag.SetTo(false)
-		lp.validityFlag = abool.NewBool(true)
-		lp.validityFlagLock.Unlock()
 		// get global config validity flag
 		lp.globalValidityFlag.Refresh()
 

profile/profile.go

@@ -89,7 +89,7 @@ type Profile struct { //nolint:maligned // not worth the effort
 	// Config holds profile specific setttings. It's a nested
 	// object with keys defining the settings database path. All keys
 	// until the actual settings value (which is everything that is not
-	// an object) need to be concatinated for the settings database
+	// an object) need to be concatenated for the settings database
 	// path.
 	Config map[string]interface{}
 	// ApproxLastUsed holds a UTC timestamp in seconds of
@@ -120,7 +120,6 @@ type Profile struct { //nolint:maligned // not worth the effort
 	filterListIDs     []string
 
 	// Lifecycle Management
-	usedBy     *LayeredProfile
 	outdated   *abool.AtomicBool
 	lastActive *int64