external/avb: Add rollback only support for info_image

For getting rollback_index or rollback_index_location of signed file directly at host Test # test.bin # rollback_index_location : 0 # rollback_index : 1 $ ./avbtool info_image --image test.bin --rollback_index 1 $ ./avbtool info_image --image test.bin --rollback_index_location 0 Signed-off-by: wangjianyu3 <[email protected]>
open-vela · Jan 2, 2025 · 05bac1c · 05bac1c
1 parent 4832aa8
commit 05bac1c
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/avbtool.py b/avbtool.py
@@ -2424,6 +2424,12 @@ def info_image(self, args):
                   header.public_key_offset)
     key_blob = vbmeta_blob[key_offset:key_offset + header.public_key_size]
 
+    if args.rollback_index_location:
+      o.write('{}\n'.format(header.rollback_index_location))
+      return
+    if args.rollback_index:
+      o.write('{}\n'.format(header.rollback_index))
+      return
     if footer:
       o.write('Footer version:           {}.{}\n'.format(footer.version_major,
                                                          footer.version_minor))
@@ -4530,6 +4536,12 @@ def run(self, argv):
                             help=('Show information about Android Things '
                                   'eXtension (ATX).'),
                             action='store_true')
+    sub_parser.add_argument('--rollback_index',
+                            help=('Only rollback_index'),
+                            action='store_true')
+    sub_parser.add_argument('--rollback_index_location',
+                            help=('Only rollback_index_location'),
+                            action='store_true')
     sub_parser.set_defaults(func=self.info_image)
 
     sub_parser = subparsers.add_parser(