Convert build_verify_metadata to python 3

Also update some python 3 issues in mkuserimg_mke2fs.

Bug: 203436762
Test: Presubmits
Change-Id: Ib919d40c96d3c26d29d8c1b4af67300c4130ec42

2 files changed, 7 insertions, 12 deletions

diff --git a/verity/Android.bp b/verity/Android.bp
index fc2b827c..ef09528c 100644
--- a/verity/Android.bp
+++ b/verity/Android.bp
@@ -154,13 +154,8 @@ python_binary_host {
     name: "build_verity_metadata",
     srcs: ["build_verity_metadata.py"],
     version: {
-        py2: {
-            enabled: true,
-            embedded_launcher: true,
-        },
         py3: {
-            enabled: false,
-            embedded_launcher: false,
+            embedded_launcher: true,
         },
     },
 }
diff --git a/verity/build_verity_metadata.py b/verity/build_verity_metadata.py
index 5a7d7d27..52388716 100644
--- a/verity/build_verity_metadata.py
+++ b/verity/build_verity_metadata.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright (C) 2013 The Android Open Source Project
 #
@@ -29,9 +29,9 @@ BLOCK_SIZE = 4096
 METADATA_SIZE = BLOCK_SIZE * 8
 
 def run(cmd):
-    p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
+    p = subprocess.Popen(cmd, stdout=subprocess.PIPE, text=True)
     output, _ = p.communicate()
-    print output
+    print(output)
     if p.returncode:
         exit(-1)
 
@@ -56,7 +56,7 @@ def sign_verity_table(table, signer_path, key_path, signer_args=None):
             else:
               args_list = shlex.split(signer_args)
               cmd = [signer_path] + args_list + [table_file.name, key_path, signature_file.name]
-            print cmd
+            print(cmd)
             run(cmd)
             return signature_file.read()
 
@@ -109,9 +109,9 @@ if __name__ == "__main__":
     args = parser.parse_args()
 
     if args.dest == 'size':
-        print get_verity_metadata_size(args.partition_size)
+        print(get_verity_metadata_size(args.partition_size))
     else:
-        build_verity_metadata(args.blocks / 4096, args.metadata_image,
+        build_verity_metadata(args.blocks // 4096, args.metadata_image,
                               args.root_hash, args.salt, args.block_device,
                               args.signer_path, args.signing_key,
                               args.signer_args, args.verity_disable)