62 void exfat_set_bit(struct exfat_blk_dev *bd, char *bitmap,  in exfat_set_bit()  argument
67 	b = clu & ((bd->sector_size << 3) - 1);  in exfat_set_bit()
72 void exfat_clear_bit(struct exfat_blk_dev *bd, char *bitmap,  in exfat_clear_bit()  argument
77 	b = clu & ((bd->sector_size << 3) - 1);  in exfat_clear_bit()
127 static void exfat_set_default_cluster_size(struct exfat_blk_dev *bd,  in exfat_set_default_cluster_size()  argument
130 	if (256 * MB >= bd->size)  in exfat_set_default_cluster_size()
132 	else if (32 * GB >= bd->size)  in exfat_set_default_cluster_size()
146 		struct exfat_blk_dev *bd)  in exfat_get_blk_dev_info()  argument
187 	bd->dev_fd = fd;  in exfat_get_blk_dev_info()
188 	bd->offset = blk_dev_offset;  in exfat_get_blk_dev_info()
189 	bd->size = blk_dev_size;  in exfat_get_blk_dev_info()
191 		exfat_set_default_cluster_size(bd, ui);  in exfat_get_blk_dev_info()
196 	if (ioctl(fd, BLKSSZGET, &bd->sector_size) < 0)  in exfat_get_blk_dev_info()
197 		bd->sector_size = DEFAULT_SECTOR_SIZE;  in exfat_get_blk_dev_info()
198 	bd->sector_size_bits = sector_size_bits(bd->sector_size);  in exfat_get_blk_dev_info()
199 	bd->num_sectors = blk_dev_size / bd->sector_size;  in exfat_get_blk_dev_info()
200 	bd->num_clusters = blk_dev_size / ui->cluster_size;  in exfat_get_blk_dev_info()
203 	exfat_debug("Block device offset : %llu\n", bd->offset);  in exfat_get_blk_dev_info()
204 	exfat_debug("Block device size : %llu\n", bd->size);  in exfat_get_blk_dev_info()
205 	exfat_debug("Block sector size : %u\n", bd->sector_size);  in exfat_get_blk_dev_info()
207 		bd->num_sectors);  in exfat_get_blk_dev_info()
209 		bd->num_clusters);  in exfat_get_blk_dev_info()
212 	bd->dev_fd = fd;  in exfat_get_blk_dev_info()
357 off_t exfat_get_root_entry_offset(struct exfat_blk_dev *bd)  in exfat_get_root_entry_offset()  argument
370 	nbytes = exfat_read(bd->dev_fd, bs, EXFAT_MAX_SECTOR_SIZE, 0);  in exfat_get_root_entry_offset()
408 int exfat_show_volume_label(struct exfat_blk_dev *bd, off_t root_clu_off)  in exfat_show_volume_label()  argument
420 	nbytes = exfat_read(bd->dev_fd, vol_entry,  in exfat_show_volume_label()
441 int exfat_set_volume_label(struct exfat_blk_dev *bd,  in exfat_set_volume_label()  argument
461 	nbytes = exfat_write(bd->dev_fd, &vol, sizeof(struct exfat_dentry),  in exfat_set_volume_label()
467 	fsync(bd->dev_fd);  in exfat_set_volume_label()
473 int exfat_read_sector(struct exfat_blk_dev *bd, void *buf, unsigned int sec_off)  in exfat_read_sector()  argument
476 	unsigned long long offset = sec_off * bd->sector_size;  in exfat_read_sector()
478 	ret = pread(bd->dev_fd, buf, bd->sector_size, offset);  in exfat_read_sector()
486 int exfat_write_sector(struct exfat_blk_dev *bd, void *buf,  in exfat_write_sector()  argument
490 	unsigned long long offset = sec_off * bd->sector_size;  in exfat_write_sector()
492 	bytes = pwrite(bd->dev_fd, buf, bd->sector_size, offset);  in exfat_write_sector()
493 	if (bytes != (int)bd->sector_size) {  in exfat_write_sector()
501 int exfat_write_checksum_sector(struct exfat_blk_dev *bd,  in exfat_write_checksum_sector()  argument
509 	checksum_buf = malloc(bd->sector_size);  in exfat_write_checksum_sector()
516 	for (i = 0; i < bd->sector_size / sizeof(int); i++)  in exfat_write_checksum_sector()
519 	ret = exfat_write_sector(bd, checksum_buf, sec_idx);  in exfat_write_checksum_sector()
556 static int exfat_update_boot_checksum(struct exfat_blk_dev *bd, bool is_backup)  in exfat_update_boot_checksum()  argument
562 	buf = malloc(bd->sector_size);  in exfat_update_boot_checksum()
574 		ret = exfat_read_sector(bd, buf, sec_idx + backup_sec_idx);  in exfat_update_boot_checksum()
584 		boot_calc_checksum(buf, bd->sector_size, is_boot_sec,  in exfat_update_boot_checksum()
588 	ret = exfat_write_checksum_sector(bd, checksum, is_backup);  in exfat_update_boot_checksum()
596 int exfat_set_volume_serial(struct exfat_blk_dev *bd,  in exfat_set_volume_serial()  argument
609 	ret = exfat_read(bd->dev_fd, (char *)ppbr, EXFAT_MAX_SECTOR_SIZE,  in exfat_set_volume_serial()
617 	bd->sector_size = 1 << ppbr->bsx.sect_size_bits;  in exfat_set_volume_serial()
621 	ret = exfat_write_sector(bd, (char *)ppbr, BOOT_SEC_IDX);  in exfat_set_volume_serial()
629 	ret = exfat_write_sector(bd, (char *)ppbr, BACKUP_BOOT_SEC_IDX);  in exfat_set_volume_serial()
636 	ret = exfat_update_boot_checksum(bd, 0);  in exfat_set_volume_serial()
642 	ret = exfat_update_boot_checksum(bd, 1);  in exfat_set_volume_serial()
653 unsigned int exfat_clus_to_blk_dev_off(struct exfat_blk_dev *bd,  in exfat_clus_to_blk_dev_off()  argument
656 	return clu_off_sectnr * bd->sector_size +  in exfat_clus_to_blk_dev_off()
657 		(clu - EXFAT_RESERVED_CLUSTERS) * bd->cluster_size;  in exfat_clus_to_blk_dev_off()