From cef68bf9042dda6b77b5845a25f37b9ea882074b Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Fri, 20 Nov 2015 08:06:16 +0100 Subject: gpt: part: Definition and declaration of GPT verification functions This commit provides definition and declaration of GPT verification functions - namely gpt_verify_headers() and gpt_verify_partitions(). The former is used to only check CRC32 of GPT's header and PTEs. The latter examines each partition entry and compare attributes such as: name, start offset and size with ones provided at '$partitions' env variable. Signed-off-by: Lukasz Majewski Reviewed-by: Tom Rini Reviewed-by: Przemyslaw Marczak --- include/part.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'include') diff --git a/include/part.h b/include/part.h index 8b5ac12e2ba..720a867783c 100644 --- a/include/part.h +++ b/include/part.h @@ -267,6 +267,41 @@ int is_valid_gpt_buf(block_dev_desc_t *dev_desc, void *buf); * @return - '0' on success, otherwise error */ int write_mbr_and_gpt_partitions(block_dev_desc_t *dev_desc, void *buf); + +/** + * gpt_verify_headers() - Function to read and CRC32 check of the GPT's header + * and partition table entries (PTE) + * + * As a side effect if sets gpt_head and gpt_pte so they point to GPT data. + * + * @param dev_desc - block device descriptor + * @param gpt_head - pointer to GPT header data read from medium + * @param gpt_pte - pointer to GPT partition table enties read from medium + * + * @return - '0' on success, otherwise error + */ +int gpt_verify_headers(block_dev_desc_t *dev_desc, gpt_header *gpt_head, + gpt_entry **gpt_pte); + +/** + * gpt_verify_partitions() - Function to check if partitions' name, start and + * size correspond to '$partitions' env variable + * + * This function checks if on medium stored GPT data is in sync with information + * provided in '$partitions' environment variable. Specificially, name, start + * and size of the partition is checked. + * + * @param dev_desc - block device descriptor + * @param partitions - partition data read from '$partitions' env variable + * @param parts - number of partitions read from '$partitions' env variable + * @param gpt_head - pointer to GPT header data read from medium + * @param gpt_pte - pointer to GPT partition table enties read from medium + * + * @return - '0' on success, otherwise error + */ +int gpt_verify_partitions(block_dev_desc_t *dev_desc, + disk_partition_t *partitions, int parts, + gpt_header *gpt_head, gpt_entry **gpt_pte); #endif #endif /* _PART_H */ -- cgit v1.3.1