ci: add linting to makefile and ci

.github/workflows/scripts/golangci.yaml

@@ -0,0 +1,45 @@
+run:
+  timeout: 5m
+linters:
+  enable:
+   - asasalint
+   - asciicheck
+   - bidichk
+   - bodyclose
+   - dogsled
+   - dupword
+   - durationcheck
+   - errcheck
+   - errname
+   - errorlint
+   - exhaustive
+   - gochecknoinits
+   - gocritic
+   - gofmt
+   - gosimple
+   - govet
+   - ineffassign
+   - makezero
+   - misspell
+   - musttag
+   - nilnil
+   - noctx
+   - paralleltest
+   - perfsprint
+   - prealloc
+   - predeclared
+   - reassign
+   - revive
+   - rowserrcheck
+   - staticcheck
+   - sqlclosecheck
+   - tagalign
+   - tenv
+   - unused
+   - whitespace
+
+linters-settings:
+  paralleltest:
+    ignore-missing-subtests: true
+  exhaustive:
+    default-signifies-exhaustive: true

Makefile

@@ -7,6 +7,11 @@ test: vet
 	@echo "--> Running Tests ..."
 	@go test -v -race ./...
 
+.PHONY: lint
+lint: vet
+	@echo "--> Linting Go sources ..."
+	@golangci-lint run --config .github/workflows/scripts/golangci.yaml
+
 .PHONY: vet
 vet:
 	@echo "--> Vet Go sources ..."

lockdown_linux.go

@@ -13,5 +13,11 @@ func lockdown(directory string) {
 	ll := landlock.New(
 		landlock.Dir(directory, "rwc"),
 	)
-	ll.Lock(landlock.Mandatory)
+	assert(ll.Lock(landlock.Mandatory))
+}
+
+func assert(err error) {
+	if err != nil {
+		panic(err)
+	}
 }