feat(webui): show current boot source

audit/internal/platform/install_to_ram.go

@@ -12,11 +12,40 @@ import (
 )
 
 func (s *System) IsLiveMediaInRAM() bool {
-	out, err := exec.Command("findmnt", "-n", "-o", "FSTYPE", "/run/live/medium").Output()
-	if err != nil {
+	fsType := mountFSType("/run/live/medium")
+	if fsType == "" {
 		return toramActive()
 	}
-	return strings.TrimSpace(string(out)) == "tmpfs"
+	return strings.EqualFold(fsType, "tmpfs")
+}
+
+func (s *System) LiveBootSource() LiveBootSource {
+	fsType := mountFSType("/run/live/medium")
+	source := mountSource("/run/live/medium")
+	device := findLiveBootDevice()
+	status := LiveBootSource{
+		InRAM:  strings.EqualFold(fsType, "tmpfs"),
+		Source: source,
+		Device: device,
+	}
+	if fsType == "" && source == "" && device == "" {
+		if toramActive() {
+			status.InRAM = true
+			status.Kind = "ram"
+			status.Source = "tmpfs"
+			return status
+		}
+		status.Kind = "unknown"
+		return status
+	}
+	status.Kind = inferLiveBootKind(fsType, source, blockDeviceType(device), blockDeviceTransport(device))
+	if status.Kind == "" {
+		status.Kind = "unknown"
+	}
+	if status.InRAM && strings.TrimSpace(status.Source) == "" {
+		status.Source = "tmpfs"
+	}
+	return status
 }
 
 func (s *System) RunInstallToRAM(ctx context.Context, logFunc func(string)) error {