Support dumping sepolicy rules

native/src/sepolicy/main.cpp

@@ -23,6 +23,7 @@ Options:
    --apply FILE      apply rules from FILE, read and parsed
                      line by line as policy statements
                      (multiple --apply are allowed)
+   --print-rules     print all rules in the loaded sepolicy
 
 If neither --load, --load-split, nor --compile-split is specified,
 it will load from current live policies (/sys/fs/selinux/policy)
@@ -38,6 +39,7 @@ int main(int argc, char *argv[]) {
     sepolicy *sepol = nullptr;
     bool magisk = false;
     bool live = false;
+    bool print = false;
 
     if (argc < 2) usage(argv[0]);
     int i = 1;
@@ -49,6 +51,8 @@ int main(int argc, char *argv[]) {
                 live = true;
             else if (option == "magisk"sv)
                 magisk = true;
+            else if (option == "print-rules"sv)
+                print = true;
             else if (option == "load"sv) {
                 if (argv[i + 1] == nullptr)
                     usage(argv[0]);
@@ -96,6 +100,11 @@ int main(int argc, char *argv[]) {
         return 1;
     }
 
+    if (print) {
+        sepol->print_rules();
+        return 0;
+    }
+
     if (magisk)
         sepol->magisk_rules();