build: split systemd drop file in function of their purpose.

default: ensure a service use a given profile
early: ensure a service start after apparmor.

cmd/prebuild/main.go

@@ -52,13 +52,15 @@ func aaPrebuild() error {
 		prebuild.Prepares = append(prebuild.Prepares, prebuild.SetFullSystemPolicy)
 		prebuild.Builds = append(prebuild.Builds, prebuild.BuildFullSystemPolicy)
 	} else {
-		prebuild.Prepares = append(prebuild.Prepares, prebuild.SetDefaultSystemd)
+		prebuild.Prepares = append(prebuild.Prepares, prebuild.SetEarlySystemd)
 	}
+
 	if complain {
 		prebuild.Builds = append(prebuild.Builds, prebuild.BuildComplain)
 	} else if enforce {
 		prebuild.Builds = append(prebuild.Builds, prebuild.BuildEnforce)
 	}
+
 	if abi4 {
 		prebuild.Builds = append(prebuild.Builds, prebuild.BuildABI3)
 	}

pkg/prebuild/prepare.go

@@ -23,6 +23,7 @@ var (
 		Merge,
 		Configure,
 		SetFlags,
+		SetProfileSystemd,
 	}
 	PrepareMsg = map[string]string{
 		"Synchronise":         "Initialize a new clean apparmor.d build directory",
@@ -30,7 +31,8 @@ var (
 		"Merge":               "Merge all profiles",
 		"Configure":           "Set distribution specificities",
 		"SetFlags":            "Set flags on some profiles",
-		"SetDefaultSystemd":   "Set systemd unit drop in files to ensure some service start after apparmor",
+		"SetProfileSystemd":   "Use the systemd unit file to set a profile for a given unit",
+		"SetEarlySystemd":     "Set systemd unit drop in files to ensure some service start after apparmor",
 		"SetFullSystemPolicy": "Configure AppArmor for full system policy",
 	}
 )
@@ -198,11 +200,16 @@ func SetFlags() ([]string, error) {
 	return res, nil
 }
 
-// Set systemd unit drop in files to ensure some service start after apparmor
+// Use the systemd unit file to set a profile for a given unit
-func SetDefaultSystemd() ([]string, error) {
+func SetProfileSystemd() ([]string, error) {
 	return []string{}, copyTo(paths.New("systemd/default/"), Root.Join("systemd"))
 }
 
+// Set systemd unit drop in files to ensure some service start after apparmor
+func SetEarlySystemd() ([]string, error) {
+	return []string{}, copyTo(paths.New("systemd/early/"), Root.Join("systemd"))
+}
+
 // Set AppArmor for (experimental) full system policy.
 // See https://apparmor.pujol.io/full-system-policy/
 func SetFullSystemPolicy() ([]string, error) {