44 static void exfat_put_super(struct super_block *sb)  in exfat_put_super()  argument
46 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_put_super()
56 static int exfat_sync_fs(struct super_block *sb, int wait)  in exfat_sync_fs()  argument
58 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_sync_fs()
66 	sync_blockdev(sb->s_bdev);  in exfat_sync_fs()
67 	if (exfat_clear_volume_dirty(sb))  in exfat_sync_fs()
75 	struct super_block *sb = dentry->d_sb;  in exfat_statfs()  local
76 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_statfs()
77 	unsigned long long id = huge_encode_dev(sb->s_bdev->bd_dev);  in exfat_statfs()
81 		if (exfat_count_used_clusters(sb, &sbi->used_clusters)) {  in exfat_statfs()
88 	buf->f_type = sb->s_magic;  in exfat_statfs()
99 static int exfat_set_vol_flags(struct super_block *sb, unsigned short new_flags)  in exfat_set_vol_flags()  argument
101 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_set_vol_flags()
116 	if (sb_rdonly(sb))  in exfat_set_vol_flags()
129 int exfat_set_volume_dirty(struct super_block *sb)  in exfat_set_volume_dirty()  argument
131 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_set_volume_dirty()
133 	return exfat_set_vol_flags(sb, sbi->vol_flags | VOLUME_DIRTY);  in exfat_set_volume_dirty()
136 int exfat_clear_volume_dirty(struct super_block *sb)  in exfat_clear_volume_dirty()  argument
138 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_clear_volume_dirty()
140 	return exfat_set_vol_flags(sb, sbi->vol_flags & ~VOLUME_DIRTY);  in exfat_clear_volume_dirty()
145 	struct super_block *sb = root->d_sb;  in exfat_show_options()  local
146 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_show_options()
180 static struct inode *exfat_alloc_inode(struct super_block *sb)  in exfat_alloc_inode()  argument
184 	ei = alloc_inode_sb(sb, exfat_inode_cachep, GFP_NOFS);  in exfat_alloc_inode()
329 static void exfat_hash_init(struct super_block *sb)  in exfat_hash_init()  argument
331 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_hash_init()
341 	struct super_block *sb = inode->i_sb;  in exfat_read_root()  local
342 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_read_root()
359 	if (exfat_count_num_clusters(sb, &cdir, &num_clu))  in exfat_read_root()
363 	num_subdirs = exfat_count_dir_entries(sb, &cdir);  in exfat_read_root()
389 static int exfat_calibrate_blocksize(struct super_block *sb, int logical_sect)  in exfat_calibrate_blocksize()  argument
391 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_calibrate_blocksize()
394 		exfat_err(sb, "bogus logical sector size %u", logical_sect);  in exfat_calibrate_blocksize()
398 	if (logical_sect < sb->s_blocksize) {  in exfat_calibrate_blocksize()
399 		exfat_err(sb, "logical sector size too small for device (logical sector size = %u)",  in exfat_calibrate_blocksize()
404 	if (logical_sect > sb->s_blocksize) {  in exfat_calibrate_blocksize()
408 		if (!sb_set_blocksize(sb, logical_sect)) {  in exfat_calibrate_blocksize()
409 			exfat_err(sb, "unable to set blocksize %u",  in exfat_calibrate_blocksize()
413 		sbi->boot_bh = sb_bread(sb, 0);  in exfat_calibrate_blocksize()
415 			exfat_err(sb, "unable to read boot sector (logical sector size = %lu)",  in exfat_calibrate_blocksize()
416 				  sb->s_blocksize);  in exfat_calibrate_blocksize()
423 static int exfat_read_boot_sector(struct super_block *sb)  in exfat_read_boot_sector()  argument
426 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_read_boot_sector()
429 	sb_min_blocksize(sb, 512);  in exfat_read_boot_sector()
432 	sbi->boot_bh = sb_bread(sb, 0);  in exfat_read_boot_sector()
434 		exfat_err(sb, "unable to read boot sector");  in exfat_read_boot_sector()
441 		exfat_err(sb, "invalid boot record signature");  in exfat_read_boot_sector()
446 		exfat_err(sb, "invalid fs_name"); /* fs_name may unprintable */  in exfat_read_boot_sector()
458 		exfat_err(sb, "bogus number of FAT structure");  in exfat_read_boot_sector()
467 		exfat_err(sb, "bogus sector size bits : %u",  in exfat_read_boot_sector()
476 		exfat_err(sb, "bogus sectors bits per cluster : %u",  in exfat_read_boot_sector()
509 		exfat_err(sb, "bogus fat length");  in exfat_read_boot_sector()
516 		exfat_err(sb, "bogus data start sector");  in exfat_read_boot_sector()
521 		exfat_warn(sb, "Volume was not properly unmounted. Some data may be corrupt. Please run fsck.");  in exfat_read_boot_sector()
523 		exfat_warn(sb, "Medium has reported failures. Some data may be lost.");  in exfat_read_boot_sector()
526 	sb->s_maxbytes = (u64)(sbi->num_clusters - EXFAT_RESERVED_CLUSTERS) <<  in exfat_read_boot_sector()
530 	if (exfat_calibrate_blocksize(sb, 1 << p_boot->sect_size_bits))  in exfat_read_boot_sector()
536 static int exfat_verify_boot_region(struct super_block *sb)  in exfat_verify_boot_region()  argument
545 		bh = sb_bread(sb, sn);  in exfat_verify_boot_region()
551 			p_sig = (__le32 *)&bh->b_data[sb->s_blocksize - 4];  in exfat_verify_boot_region()
553 				exfat_warn(sb, "Invalid exboot-signature(sector = %d): 0x%08x",  in exfat_verify_boot_region()
557 		chksum = exfat_calc_chksum32(bh->b_data, sb->s_blocksize,  in exfat_verify_boot_region()
563 	bh = sb_bread(sb, sn);  in exfat_verify_boot_region()
567 	for (i = 0; i < sb->s_blocksize; i += sizeof(u32)) {  in exfat_verify_boot_region()
570 			exfat_err(sb, "Invalid boot checksum (boot checksum : 0x%08x, checksum : 0x%08x)",  in exfat_verify_boot_region()
581 static int __exfat_fill_super(struct super_block *sb)  in __exfat_fill_super()  argument
584 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in __exfat_fill_super()
586 	ret = exfat_read_boot_sector(sb);  in __exfat_fill_super()
588 		exfat_err(sb, "failed to read boot sector");  in __exfat_fill_super()
592 	ret = exfat_verify_boot_region(sb);  in __exfat_fill_super()
594 		exfat_err(sb, "invalid boot region");  in __exfat_fill_super()
598 	ret = exfat_create_upcase_table(sb);  in __exfat_fill_super()
600 		exfat_err(sb, "failed to load upcase table");  in __exfat_fill_super()
604 	ret = exfat_load_bitmap(sb);  in __exfat_fill_super()
606 		exfat_err(sb, "failed to load alloc-bitmap");  in __exfat_fill_super()
610 	ret = exfat_count_used_clusters(sb, &sbi->used_clusters);  in __exfat_fill_super()
612 		exfat_err(sb, "failed to scan clusters");  in __exfat_fill_super()
627 static int exfat_fill_super(struct super_block *sb, struct fs_context *fc)  in exfat_fill_super()  argument
629 	struct exfat_sb_info *sbi = sb->s_fs_info;  in exfat_fill_super()
637 	if (opts->discard && !bdev_max_discard_sectors(sb->s_bdev)) {  in exfat_fill_super()
638 		exfat_warn(sb, "mounting with \"discard\" option, but the device does not support discard");  in exfat_fill_super()
642 	sb->s_flags |= SB_NODIRATIME;  in exfat_fill_super()
643 	sb->s_magic = EXFAT_SUPER_MAGIC;  in exfat_fill_super()
644 	sb->s_op = &exfat_sops;  in exfat_fill_super()
646 	sb->s_time_gran = 10 * NSEC_PER_MSEC;  in exfat_fill_super()
647 	sb->s_time_min = EXFAT_MIN_TIMESTAMP_SECS;  in exfat_fill_super()
648 	sb->s_time_max = EXFAT_MAX_TIMESTAMP_SECS;  in exfat_fill_super()
650 	err = __exfat_fill_super(sb);  in exfat_fill_super()
652 		exfat_err(sb, "failed to recognize exfat type");  in exfat_fill_super()
657 	exfat_hash_init(sb);  in exfat_fill_super()
664 			exfat_err(sb, "IO charset %s not found",  in exfat_fill_super()
672 		sb->s_d_op = &exfat_utf8_dentry_ops;  in exfat_fill_super()
674 		sb->s_d_op = &exfat_dentry_ops;  in exfat_fill_super()
676 	root_inode = new_inode(sb);  in exfat_fill_super()
678 		exfat_err(sb, "failed to allocate root inode");  in exfat_fill_super()
687 		exfat_err(sb, "failed to initialize root inode");  in exfat_fill_super()
694 	sb->s_root = d_make_root(root_inode);  in exfat_fill_super()
695 	if (!sb->s_root) {  in exfat_fill_super()
696 		exfat_err(sb, "failed to get the root dentry");  in exfat_fill_super()
705 	sb->s_root = NULL;  in exfat_fill_super()
715 	sb->s_fs_info = NULL;  in exfat_fill_super()