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libavb: Fix build warnings after updating the lib

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After updating libavb to most recent version from AOSP/master, two new
warnings appear:

Warning #1:

    lib/libavb/avb_cmdline.c: In function 'avb_append_options':
    lib/libavb/avb_cmdline.c:365:15: warning: 'dm_verity_mode' may be
                                     used uninitialized in this function
                                     [-Wmaybe-uninitialized]
         new_ret = avb_replace(
                   ^~~~~~~~~~~~
             slot_data->cmdline, "$(ANDROID_VERITY_MODE)", dm_verity_mode);
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    lib/libavb/avb_cmdline.c:374:8: warning: 'verity_mode' may be used
                                    uninitialized in this function
                                    [-Wmaybe-uninitialized]
       if (!cmdline_append_option(
            ^~~~~~~~~~~~~~~~~~~~~~
               slot_data, "androidboot.veritymode", verity_mode)) {
               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Warning #2:

    lib/libavb/avb_slot_verify.c: In function 'avb_slot_verify':
    lib/libavb/avb_slot_verify.c:1349:23: warning: 'ret' may be used
                                          uninitialized in this function
                                          [-Wmaybe-uninitialized]
       AvbSlotVerifyResult ret;
                           ^~~

Fix those by providing default return values to affected functions.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
This commit is contained in:
Sam Protsenko 2019-08-15 23:04:03 +03:00 committed by Tom Rini
parent 4d579a4394
commit 8f684b5a8b
2 changed files with 3 additions and 2 deletions
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3
lib/libavb/avb_cmdline.c
View file

@ -357,7 +357,8 @@ AvbSlotVerifyResult avb_append_options(
// Should never get here because MANAGED_RESTART_AND_EIO is
// remapped by avb_manage_hashtree_error_mode().
avb_assert_not_reached();
break;
ret = AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_ARGUMENT;
goto out;
default:
ret = AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_ARGUMENT;
goto out;

2
lib/libavb/avb_slot_verify.c
View file

@ -1346,7 +1346,7 @@ AvbSlotVerifyResult avb_slot_verify(AvbOps* ops,
AvbSlotVerifyFlags flags,
AvbHashtreeErrorMode hashtree_error_mode,
AvbSlotVerifyData** out_data) {
AvbSlotVerifyResult ret;
AvbSlotVerifyResult ret = AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_ARGUMENT;
AvbSlotVerifyData* slot_data = NULL;
AvbAlgorithmType algorithm_type = AVB_ALGORITHM_TYPE_NONE;
bool using_boot_for_vbmeta = false;