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()
601 		gpt_header *gpt_h, gpt_entry *gpt_e)  in write_gpt_table()  argument
603 	const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries  in write_gpt_table()
616 			      le32_to_cpu(gpt_h->num_partition_entries) *  in write_gpt_table()
617 			      le32_to_cpu(gpt_h->sizeof_partition_entry));  in write_gpt_table()
618 	gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32);  in write_gpt_table()
620 	calc_crc32 = efi_crc32((const unsigned char *)gpt_h,  in write_gpt_table()
621 			      le32_to_cpu(gpt_h->header_size));  in write_gpt_table()
622 	gpt_h->header_crc32 = cpu_to_le32(calc_crc32);  in write_gpt_table()
625 	if (blk_dwrite(dev_desc, 1 * sector, sector, gpt_h) != sector)  in write_gpt_table()
628 	if (blk_dwrite(dev_desc, le64_to_cpu(gpt_h->partition_entry_lba * sector),  in write_gpt_table()
632 	prepare_backup_gpt_header(gpt_h);  in write_gpt_table()
634 	if (blk_dwrite(dev_desc, (lbaint_t)(le64_to_cpu(gpt_h->last_usable_lba)  in write_gpt_table()
638 	if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->my_lba) * sector, 1,  in write_gpt_table()
639 		       gpt_h) != 1)  in write_gpt_table()
651 		 gpt_header *gpt_h, gpt_entry *gpt_e,  in gpt_fill_pte()  argument
654 	lbaint_t offset = (lbaint_t)le64_to_cpu(gpt_h->first_usable_lba);  in gpt_fill_pte()
656 			le64_to_cpu(gpt_h->last_usable_lba);  in gpt_fill_pte()
667 	size_t hdr_start = gpt_h->my_lba;  in gpt_fill_pte()
670 	size_t pte_start = gpt_h->partition_entry_lba;  in gpt_fill_pte()
672 		gpt_h->num_partition_entries * gpt_h->sizeof_partition_entry /  in gpt_fill_pte()
706 			gpt_e[i].ending_lba = gpt_h->last_usable_lba;  in gpt_fill_pte()
816 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h,  in gpt_fill_header()  argument
819 	gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE);  in gpt_fill_header()
820 	gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1);  in gpt_fill_header()
821 	gpt_h->header_size = cpu_to_le32(sizeof(gpt_header));  in gpt_fill_header()
822 	gpt_h->my_lba = cpu_to_le64(1);  in gpt_fill_header()
823 	gpt_h->alternate_lba = cpu_to_le64(dev_desc->rawlba - 1);  in gpt_fill_header()
824 	gpt_h->partition_entry_lba =  in gpt_fill_header()
827 		gpt_h->last_usable_lba = cpu_to_le64(dev_desc->rawlba - 6);  in gpt_fill_header()
828 		gpt_h->first_usable_lba =  in gpt_fill_header()
829 			cpu_to_le64(le64_to_cpu(gpt_h->partition_entry_lba) + 4);  in gpt_fill_header()
831 		gpt_h->last_usable_lba = cpu_to_le64(dev_desc->rawlba - 34);  in gpt_fill_header()
832 		gpt_h->first_usable_lba =  in gpt_fill_header()
833 			cpu_to_le64(le64_to_cpu(gpt_h->partition_entry_lba) + 32);  in gpt_fill_header()
835 	gpt_h->num_partition_entries = cpu_to_le32(GPT_ENTRY_NUMBERS);  in gpt_fill_header()
836 	gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry));  in gpt_fill_header()
837 	gpt_h->header_crc32 = 0;  in gpt_fill_header()
838 	gpt_h->partition_entry_array_crc32 = 0;  in gpt_fill_header()
840 	if (uuid_str_to_bin(str_guid, gpt_h->disk_guid.b, UUID_STR_FORMAT_GUID))  in gpt_fill_header()
849 	gpt_header *gpt_h;  in gpt_restore()  local
854 	gpt_h = malloc_cache_aligned(size);  in gpt_restore()
855 	if (gpt_h == NULL) {  in gpt_restore()
859 	memset(gpt_h, 0, size);  in gpt_restore()
865 		free(gpt_h);  in gpt_restore()
871 	ret = gpt_fill_header(dev_desc, gpt_h, str_disk_guid, parts_count);  in gpt_restore()
876 	ret = gpt_fill_pte(dev_desc, gpt_h, gpt_e, partitions, parts_count);  in gpt_restore()
881 	ret = write_gpt_table(dev_desc, gpt_h, gpt_e);  in gpt_restore()
885 	free(gpt_h);  in gpt_restore()
1016 	gpt_header *gpt_h;  in is_valid_gpt_buf()  local
1020 	gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA *  in is_valid_gpt_buf()
1023 	if ((le64_to_cpu(gpt_h->alternate_lba) + 1)  in is_valid_gpt_buf()
1025 			le64_to_cpu(gpt_h->last_usable_lba) != FACTORY_UNKNOWN_LBA) {  in is_valid_gpt_buf()
1031 	if (validate_gpt_header(gpt_h, GPT_PRIMARY_PARTITION_TABLE_LBA,  in is_valid_gpt_buf()
1036 	gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) *  in is_valid_gpt_buf()
1038 	if (validate_gpt_entries(gpt_h, gpt_e))  in is_valid_gpt_buf()
1046 	gpt_header *gpt_h;  in write_mbr_and_gpt_partitions()  local
1061 	gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA *  in write_mbr_and_gpt_partitions()
1065 	gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) *  in write_mbr_and_gpt_partitions()
1067 	gpt_e_blk_cnt = BLOCK_CNT((le32_to_cpu(gpt_h->num_partition_entries) *  in write_mbr_and_gpt_partitions()
1068 				   le32_to_cpu(gpt_h->sizeof_partition_entry)),  in write_mbr_and_gpt_partitions()
1083 	if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) {  in write_mbr_and_gpt_partitions()
1089 	lba = le64_to_cpu(gpt_h->partition_entry_lba);  in write_mbr_and_gpt_partitions()
1097 	prepare_backup_gpt_header(gpt_h);  in write_mbr_and_gpt_partitions()
1100 	lba = le64_to_cpu(gpt_h->partition_entry_lba);  in write_mbr_and_gpt_partitions()
1108 	lba = le64_to_cpu(gpt_h->my_lba);  in write_mbr_and_gpt_partitions()
1110 	if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) {  in write_mbr_and_gpt_partitions()