From 7a5fbfe64154c7474a9af2f3ff0a57ea2089fd87 Mon Sep 17 00:00:00 2001 From: Igor Opaniuk Date: Fri, 10 Aug 2018 16:59:59 +0300 Subject: [PATCH] avb2.0: add get_size_of_partition() Implement get_size_of_partition() operation, which is required by the latest upstream libavb [1]. [1] https://android.googlesource.com/platform/external/avb/+/android-p-preview-5 Signed-off-by: Igor Opaniuk Acked-by: Andrew F. Davis Reviewed-by: Sam Protsenko --- common/avb_verify.c | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/common/avb_verify.c b/common/avb_verify.c index 20e35ad..82ddebc 100644 --- a/common/avb_verify.c +++ b/common/avb_verify.c @@ -700,6 +700,37 @@ static AvbIOResult get_unique_guid_for_partition(AvbOps *ops, } /** + * get_size_of_partition() - gets the size of a partition identified + * by a string name + * + * @ops: contains AVB ops handlers + * @partition: partition name (NUL-terminated UTF-8 string) + * @out_size_num_bytes: returns the value of a partition size + * + * @return: + * AVB_IO_RESULT_OK, on success (GUID found) + * AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE, out_size_num_bytes is NULL + * AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION, if partition was not found + */ +static AvbIOResult get_size_of_partition(AvbOps *ops, + const char *partition, + u64 *out_size_num_bytes) +{ + struct mmc_part *part; + + if (!out_size_num_bytes) + return AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE; + + part = get_partition(ops, partition); + if (!part) + return AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION; + + *out_size_num_bytes = part->info.blksz * part->info.size; + + return AVB_IO_RESULT_OK; +} + +/** * ============================================================================ * AVB2.0 AvbOps alloc/initialisation/free * ============================================================================ @@ -722,7 +753,7 @@ AvbOps *avb_ops_alloc(int boot_device) ops_data->ops.read_is_device_unlocked = read_is_device_unlocked; ops_data->ops.get_unique_guid_for_partition = get_unique_guid_for_partition; - + ops_data->ops.get_size_of_partition = get_size_of_partition; ops_data->mmc_dev = boot_device; return &ops_data->ops;