feat(build): add the exec directive.

pkg/prebuild/directive/exec.go

@@ -0,0 +1,48 @@
+// apparmor.d - Full set of apparmor profiles
+// Copyright (C) 2021-2024 Alexandre Pujol <alexandre@pujol.io>
+// SPDX-License-Identifier: GPL-2.0-only
+
+package directive
+
+import (
+	"strings"
+
+	"github.com/roddhjav/apparmor.d/pkg/aa"
+)
+
+type Exec struct {
+	DirectiveBase
+}
+
+func init() {
+	Directives["exec"] = &Exec{
+		DirectiveBase: DirectiveBase{
+			message: "Exec directive applied",
+			usage:   `#aa:exec [P|U|p|u|i|] profiles_name...`,
+		},
+	}
+}
+
+func (d Exec) Apply(opt *Option, profile string) string {
+	res := ""
+	transition := "Px"
+	for name := range opt.Args {
+		tmp, err := rootApparmord.Join(name).ReadFile()
+		if err != nil {
+			panic(err)
+		}
+		profiletoTransition := string(tmp)
+
+		p := aa.DefaultTunables()
+		p.ParseVariables(profiletoTransition)
+		for _, variable := range p.Variables {
+			if variable.Name == "exec_path" {
+				for _, value := range variable.Values {
+					res += "  " + value + " " + transition + ",\n"
+				}
+			}
+		}
+		profile = strings.Replace(profile, opt.Raw, res, -1)
+	}
+	return profile
+}