76 static int validate_gpt_header(gpt_header *gpt_h, lbaint_t lba,  in validate_gpt_header()  argument
83 	if (le64_to_cpu(gpt_h->signature) != GPT_HEADER_SIGNATURE) {  in validate_gpt_header()
84 		if (le64_to_cpu(gpt_h->signature) != 0)  in validate_gpt_header()
87 			       le64_to_cpu(gpt_h->signature),  in validate_gpt_header()
93 	memcpy(&crc32_backup, &gpt_h->header_crc32, sizeof(crc32_backup));  in validate_gpt_header()
94 	memset(&gpt_h->header_crc32, 0, sizeof(gpt_h->header_crc32));  in validate_gpt_header()
96 	calc_crc32 = efi_crc32((const unsigned char *)gpt_h,  in validate_gpt_header()
97 		le32_to_cpu(gpt_h->header_size));  in validate_gpt_header()
99 	memcpy(&gpt_h->header_crc32, &crc32_backup, sizeof(crc32_backup));  in validate_gpt_header()
111 	if (le64_to_cpu(gpt_h->my_lba) != lba) {  in validate_gpt_header()
113 		       le64_to_cpu(gpt_h->my_lba),  in validate_gpt_header()
122 	if (le64_to_cpu(gpt_h->first_usable_lba) > lastlba) {  in validate_gpt_header()
124 		       le64_to_cpu(gpt_h->first_usable_lba), lastlba);  in validate_gpt_header()
127 	if (le64_to_cpu(gpt_h->last_usable_lba) > lastlba) {  in validate_gpt_header()
128 		if (le64_to_cpu(gpt_h->last_usable_lba) == FACTORY_UNKNOWN_LBA) {  in validate_gpt_header()
131 			gpt_h->last_usable_lba = lastlba - 34;  in validate_gpt_header()
139 		       le64_to_cpu(gpt_h->last_usable_lba), lastlba);  in validate_gpt_header()
144 	      LBAF "\n", le64_to_cpu(gpt_h->first_usable_lba),  in validate_gpt_header()
145 	      le64_to_cpu(gpt_h->last_usable_lba), lastlba);  in validate_gpt_header()
150 static int validate_gpt_entries(gpt_header *gpt_h, gpt_entry *gpt_e)  in validate_gpt_entries()  argument
156 		le32_to_cpu(gpt_h->num_partition_entries) *  in validate_gpt_entries()
157 		le32_to_cpu(gpt_h->sizeof_partition_entry));  in validate_gpt_entries()
159 	if (calc_crc32 != le32_to_cpu(gpt_h->partition_entry_array_crc32)) {  in validate_gpt_entries()
162 		       le32_to_cpu(gpt_h->partition_entry_array_crc32),  in validate_gpt_entries()
170 static void prepare_backup_gpt_header(gpt_header *gpt_h)  in prepare_backup_gpt_header()  argument
176 	val = le64_to_cpu(gpt_h->my_lba);  in prepare_backup_gpt_header()
177 	gpt_h->my_lba = gpt_h->alternate_lba;  in prepare_backup_gpt_header()
178 	gpt_h->alternate_lba = cpu_to_le64(val);  in prepare_backup_gpt_header()
179 	gpt_h->partition_entry_lba =  in prepare_backup_gpt_header()
180 			cpu_to_le64(le64_to_cpu(gpt_h->last_usable_lba) + 1);  in prepare_backup_gpt_header()
181 	gpt_h->header_crc32 = 0;  in prepare_backup_gpt_header()
183 	calc_crc32 = efi_crc32((const unsigned char *)gpt_h,  in prepare_backup_gpt_header()
184 			       le32_to_cpu(gpt_h->header_size));  in prepare_backup_gpt_header()
185 	gpt_h->header_crc32 = cpu_to_le32(calc_crc32);  in prepare_backup_gpt_header()
549 		gpt_header *gpt_h, gpt_entry *gpt_e)  in write_gpt_table()  argument
551 	const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries  in write_gpt_table()
562 			      le32_to_cpu(gpt_h->num_partition_entries) *  in write_gpt_table()
563 			      le32_to_cpu(gpt_h->sizeof_partition_entry));  in write_gpt_table()
564 	gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32);  in write_gpt_table()
566 	calc_crc32 = efi_crc32((const unsigned char *)gpt_h,  in write_gpt_table()
567 			      le32_to_cpu(gpt_h->header_size));  in write_gpt_table()
568 	gpt_h->header_crc32 = cpu_to_le32(calc_crc32);  in write_gpt_table()
571 	if (blk_dwrite(dev_desc, 1, 1, gpt_h) != 1)  in write_gpt_table()
574 	if (blk_dwrite(dev_desc, le64_to_cpu(gpt_h->partition_entry_lba),  in write_gpt_table()
578 	prepare_backup_gpt_header(gpt_h);  in write_gpt_table()
580 	if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->last_usable_lba)  in write_gpt_table()
584 	if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->my_lba), 1,  in write_gpt_table()
585 		       gpt_h) != 1)  in write_gpt_table()
597 		 gpt_header *gpt_h, gpt_entry *gpt_e,  in gpt_fill_pte()  argument
600 	lbaint_t offset = (lbaint_t)le64_to_cpu(gpt_h->first_usable_lba);  in gpt_fill_pte()
602 			le64_to_cpu(gpt_h->last_usable_lba);  in gpt_fill_pte()
613 	size_t hdr_start = gpt_h->my_lba;  in gpt_fill_pte()
616 	size_t pte_start = gpt_h->partition_entry_lba;  in gpt_fill_pte()
618 		gpt_h->num_partition_entries * gpt_h->sizeof_partition_entry /  in gpt_fill_pte()
652 			gpt_e[i].ending_lba = gpt_h->last_usable_lba;  in gpt_fill_pte()
763 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h,  in gpt_fill_header()  argument
766 	gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE);  in gpt_fill_header()
767 	gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1);  in gpt_fill_header()
768 	gpt_h->header_size = cpu_to_le32(sizeof(gpt_header));  in gpt_fill_header()
769 	gpt_h->my_lba = cpu_to_le64(1);  in gpt_fill_header()
770 	gpt_h->alternate_lba = cpu_to_le64(dev_desc->lba - 1);  in gpt_fill_header()
771 	gpt_h->last_usable_lba = cpu_to_le64(dev_desc->lba - 34);  in gpt_fill_header()
772 	gpt_h->partition_entry_lba =  in gpt_fill_header()
774 	gpt_h->first_usable_lba =  in gpt_fill_header()
775 		cpu_to_le64(le64_to_cpu(gpt_h->partition_entry_lba) + 32);  in gpt_fill_header()
776 	gpt_h->num_partition_entries = cpu_to_le32(GPT_ENTRY_NUMBERS);  in gpt_fill_header()
777 	gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry));  in gpt_fill_header()
778 	gpt_h->header_crc32 = 0;  in gpt_fill_header()
779 	gpt_h->partition_entry_array_crc32 = 0;  in gpt_fill_header()
781 	if (uuid_str_to_bin(str_guid, gpt_h->disk_guid.b, UUID_STR_FORMAT_GUID))  in gpt_fill_header()
790 	gpt_header *gpt_h;  in gpt_restore()  local
795 	gpt_h = malloc_cache_aligned(size);  in gpt_restore()
796 	if (gpt_h == NULL) {  in gpt_restore()
800 	memset(gpt_h, 0, size);  in gpt_restore()
807 		free(gpt_h);  in gpt_restore()
813 	ret = gpt_fill_header(dev_desc, gpt_h, str_disk_guid, parts_count);  in gpt_restore()
818 	ret = gpt_fill_pte(dev_desc, gpt_h, gpt_e, partitions, parts_count);  in gpt_restore()
823 	ret = write_gpt_table(dev_desc, gpt_h, gpt_e);  in gpt_restore()
827 	free(gpt_h);  in gpt_restore()
958 	gpt_header *gpt_h;  in is_valid_gpt_buf()  local
962 	gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA *  in is_valid_gpt_buf()
965 	if ((le64_to_cpu(gpt_h->alternate_lba) + 1)  in is_valid_gpt_buf()
967 			le64_to_cpu(gpt_h->last_usable_lba) != FACTORY_UNKNOWN_LBA) {  in is_valid_gpt_buf()
973 	if (validate_gpt_header(gpt_h, GPT_PRIMARY_PARTITION_TABLE_LBA,  in is_valid_gpt_buf()
978 	gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) *  in is_valid_gpt_buf()
980 	if (validate_gpt_entries(gpt_h, gpt_e))  in is_valid_gpt_buf()
988 	gpt_header *gpt_h;  in write_mbr_and_gpt_partitions()  local
998 	gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA *  in write_mbr_and_gpt_partitions()
1002 	gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) *  in write_mbr_and_gpt_partitions()
1004 	gpt_e_blk_cnt = BLOCK_CNT((le32_to_cpu(gpt_h->num_partition_entries) *  in write_mbr_and_gpt_partitions()
1005 				   le32_to_cpu(gpt_h->sizeof_partition_entry)),  in write_mbr_and_gpt_partitions()
1020 	if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) {  in write_mbr_and_gpt_partitions()
1026 	lba = le64_to_cpu(gpt_h->partition_entry_lba);  in write_mbr_and_gpt_partitions()
1034 	prepare_backup_gpt_header(gpt_h);  in write_mbr_and_gpt_partitions()
1037 	lba = le64_to_cpu(gpt_h->partition_entry_lba);  in write_mbr_and_gpt_partitions()
1045 	lba = le64_to_cpu(gpt_h->my_lba);  in write_mbr_and_gpt_partitions()
1047 	if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) {  in write_mbr_and_gpt_partitions()