Bug: 694100
    Add actions for pax marking mkcodecache, node_mksnapshot and mksnapshot
    to disable mprotect for pax enable kernel.
    Reported-by: Attila Tóth <atoth@atoth.sote.hu>
    Co-developed-by: Attila Tóth <atoth@atoth.sote.hu>
    Signed-off-by: Magnus Granberg <zorry@gentoo.org>

--- a/node.gyp	2019-10-23 11:52:41.000000000 +0200
+++ b/node.gyp	2019-11-12 20:58:43.957881862 +0100
@@ -233,7 +233,9 @@
       'deps/acorn-plugins/acorn-static-class-features/index.js',
     ],
     'node_mksnapshot_exec': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)node_mksnapshot<(EXECUTABLE_SUFFIX)',
+    'node_mksnapshot_u_exec': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)node_mksnapshot_u<(EXECUTABLE_SUFFIX)',
     'mkcodecache_exec': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)mkcodecache<(EXECUTABLE_SUFFIX)',
+    'mkcodecache_u_exec': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)mkcodecache_u<(EXECUTABLE_SUFFIX)',
     'conditions': [
       [ 'node_shared=="true"', {
         'node_target_type%': 'shared_library',
@@ -436,10 +438,24 @@
           ],
           'actions': [
             {
+              'action_name': 'run_pax_mkcodecache',
+              'inputs': [
+                '<(mkcodecache_exec)',
+              ],
+              'outputs': [
+                '<(mkcodecache_u_exec)',
+              ],
+              'action': [
+                'bash',
+                '-c',
+                'mv <(mkcodecache_exec) <(mkcodecache_u_exec) && paxmark.sh m <(mkcodecache_u_exec)',
+              ],
+            },
+            {
               'action_name': 'run_mkcodecache',
               'process_outputs_as_sources': 1,
               'inputs': [
-                '<(mkcodecache_exec)',
+                '<(mkcodecache_u_exec)',
               ],
               'outputs': [
                 '<(SHARED_INTERMEDIATE_DIR)/node_code_cache.cc',
@@ -461,10 +477,24 @@
           ],
           'actions': [
             {
+              'action_name': 'run_pax_mksnapshot',
+              'inputs': [
+                '<(node_mksnapshot_exec)',
+              ],
+              'outputs': [
+                '<(node_mksnapshot_u_exec)',
+              ],
+              'action': [
+                'bash',
+                '-c',
+                'mv <(node_mksnapshot_exec) <(node_mksnapshot_u_exec) && paxmark.sh m <(node_mksnapshot_u_exec)',
+              ],
+            },
+            {
               'action_name': 'node_mksnapshot',
               'process_outputs_as_sources': 1,
               'inputs': [
-                '<(node_mksnapshot_exec)',
+                '<(node_mksnapshot_u_exec)',
               ],
               'outputs': [
                 '<(SHARED_INTERMEDIATE_DIR)/node_snapshot.cc',
--- a/tools/v8_gypfiles/v8.gyp	2019-12-03 16:10:36.000000000 +0100
+++ b/tools/v8_gypfiles/v8.gyp	2019-12-17 18:37:33.695839254 +0100
@@ -9,6 +9,7 @@
     'v8_vector_stores%': 0,
     'v8_embed_script%': "",
     'mksnapshot_exec': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)mksnapshot<(EXECUTABLE_SUFFIX)',
+    'mksnapshot_u_exec': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)mksnapshot_u<(EXECUTABLE_SUFFIX)',
     'v8_os_page_size%': 0,
     'generate_bytecode_output_root': '<(SHARED_INTERMEDIATE_DIR)/generate-bytecode-output-root',
     'generate_bytecode_builtins_list_output': '<(generate_bytecode_output_root)/builtins-generated/bytecodes-builtins-list.h',
@@ -427,6 +425,20 @@
       },
       'actions': [
         {
+          'action_name': 'run_pax_mksnapshot',
+          'inputs': [
+            '<(mksnapshot_exec)',
+          ],
+          'outputs': [
+            '<(mksnapshot_u_exec)',
+          ],
+          'action': [
+            'bash',
+            '-c',
+            'mv <(mksnapshot_exec) <(mksnapshot_u_exec) && paxmark.sh m <(mksnapshot_u_exec)',
+          ],
+        },
+        {
           'action_name': 'run_mksnapshot',
           'message': 'generating: >@(_outputs)',
           'variables': {
@@ -442,7 +454,7 @@
             ],
           },
           'inputs': [
-            '<(mksnapshot_exec)',
+            '<(mksnapshot_u_exec)',
           ],
           'outputs': ["<(INTERMEDIATE_DIR)/snapshot.cc"],
           'process_outputs_as_sources': 1,