fs/exfat/super.c

65 	struct boot_sector *p_boot = (struct boot_sector *)sbi->boot_bh->b_data;
82 	p_boot->vol_flags = cpu_to_le16(new_flags);
422 	struct boot_sector *p_boot;
434 	p_boot = (struct boot_sector *)sbi->boot_bh->b_data;
437 	if (le16_to_cpu((p_boot->signature)) != BOOT_SIGNATURE) {
442 	if (memcmp(p_boot->fs_name, STR_EXFAT, BOOTSEC_FS_NAME_LEN)) {
451 	if (memchr_inv(p_boot->must_be_zero, 0, sizeof(p_boot->must_be_zero)))
454 	if (p_boot->num_fats != 1 && p_boot->num_fats != 2) {
462 	if (p_boot->sect_size_bits < EXFAT_MIN_SECT_SIZE_BITS ||
463 	    p_boot->sect_size_bits > EXFAT_MAX_SECT_SIZE_BITS) {
465 				p_boot->sect_size_bits);
472 	if (p_boot->sect_per_clus_bits > EXFAT_MAX_SECT_PER_CLUS_BITS(p_boot)) {
474 				p_boot->sect_per_clus_bits);
478 	sbi->sect_per_clus = 1 << p_boot->sect_per_clus_bits;
479 	sbi->sect_per_clus_bits = p_boot->sect_per_clus_bits;
480 	sbi->cluster_size_bits = p_boot->sect_per_clus_bits +
481 		p_boot->sect_size_bits;
483 	sbi->num_FAT_sectors = le32_to_cpu(p_boot->fat_length);
484 	sbi->FAT1_start_sector = le32_to_cpu(p_boot->fat_offset);
485 	sbi->FAT2_start_sector = le32_to_cpu(p_boot->fat_offset);
486 	if (p_boot->num_fats == 2)
488 	sbi->data_start_sector = le32_to_cpu(p_boot->clu_offset);
489 	sbi->num_sectors = le64_to_cpu(p_boot->vol_length);
491 	sbi->num_clusters = le32_to_cpu(p_boot->clu_count) +
494 	sbi->root_dir = le32_to_cpu(p_boot->root_cluster);
498 	sbi->vol_flags = le16_to_cpu(p_boot->vol_flags);
503 	if ((u64)sbi->num_FAT_sectors << p_boot->sect_size_bits <
511 	    (u64)sbi->num_FAT_sectors * p_boot->num_fats) {
526 	if (exfat_calibrate_blocksize(sb, 1 << p_boot->sect_size_bits))