34 static void exfat_put_super(struct super_block *sb)  in exfat_put_super()  argument
36 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_put_super()
47 static int exfat_sync_fs(struct super_block *sb, int wait)  in exfat_sync_fs()  argument
49 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_sync_fs()
57 	sync_blockdev(sb->s_bdev);  in exfat_sync_fs()
58 	if (exfat_clear_volume_dirty(sb))  in exfat_sync_fs()
66 	struct super_block *sb = dentry->d_sb;  in exfat_statfs()  local
67 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_statfs()
68 	unsigned long long id = huge_encode_dev(sb->s_bdev->bd_dev);  in exfat_statfs()
72 		if (exfat_count_used_clusters(sb, &sbi->used_clusters)) {  in exfat_statfs()
79 	buf->f_type = sb->s_magic;  in exfat_statfs()
90 static int exfat_set_vol_flags(struct super_block *sb, unsigned short new_flags)  in exfat_set_vol_flags()  argument
92 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_set_vol_flags()
107 	if (sb_rdonly(sb))  in exfat_set_vol_flags()
120 int exfat_set_volume_dirty(struct super_block *sb)  in exfat_set_volume_dirty()  argument
122 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_set_volume_dirty()
124 	return exfat_set_vol_flags(sb, sbi->vol_flags | VOLUME_DIRTY);  in exfat_set_volume_dirty()
127 int exfat_clear_volume_dirty(struct super_block *sb)  in exfat_clear_volume_dirty()  argument
129 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_clear_volume_dirty()
131 	return exfat_set_vol_flags(sb, sbi->vol_flags & ~VOLUME_DIRTY);  in exfat_clear_volume_dirty()
136 	struct super_block *sb = root->d_sb;  in exfat_show_options()  local
137 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_show_options()
171 static struct inode *exfat_alloc_inode(struct super_block *sb)  in exfat_alloc_inode()  argument
175 	ei = alloc_inode_sb(sb, exfat_inode_cachep, GFP_NOFS);  in exfat_alloc_inode()
320 static void exfat_hash_init(struct super_block *sb)  in exfat_hash_init()  argument
322 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_hash_init()
332 	struct super_block *sb = inode->i_sb;  in exfat_read_root()  local
333 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_read_root()
350 	if (exfat_count_num_clusters(sb, &cdir, &num_clu))  in exfat_read_root()
354 	num_subdirs = exfat_count_dir_entries(sb, &cdir);  in exfat_read_root()
378 static int exfat_calibrate_blocksize(struct super_block *sb, int logical_sect)  in exfat_calibrate_blocksize()  argument
380 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_calibrate_blocksize()
383 		exfat_err(sb, "bogus logical sector size %u", logical_sect);  in exfat_calibrate_blocksize()
387 	if (logical_sect < sb->s_blocksize) {  in exfat_calibrate_blocksize()
388 		exfat_err(sb, "logical sector size too small for device (logical sector size = %u)",  in exfat_calibrate_blocksize()
393 	if (logical_sect > sb->s_blocksize) {  in exfat_calibrate_blocksize()
397 		if (!sb_set_blocksize(sb, logical_sect)) {  in exfat_calibrate_blocksize()
398 			exfat_err(sb, "unable to set blocksize %u",  in exfat_calibrate_blocksize()
402 		sbi->boot_bh = sb_bread(sb, 0);  in exfat_calibrate_blocksize()
404 			exfat_err(sb, "unable to read boot sector (logical sector size = %lu)",  in exfat_calibrate_blocksize()
405 				  sb->s_blocksize);  in exfat_calibrate_blocksize()
412 static int exfat_read_boot_sector(struct super_block *sb)  in exfat_read_boot_sector()  argument
415 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in exfat_read_boot_sector()
418 	sb_min_blocksize(sb, 512);  in exfat_read_boot_sector()
421 	sbi->boot_bh = sb_bread(sb, 0);  in exfat_read_boot_sector()
423 		exfat_err(sb, "unable to read boot sector");  in exfat_read_boot_sector()
430 		exfat_err(sb, "invalid boot record signature");  in exfat_read_boot_sector()
435 		exfat_err(sb, "invalid fs_name"); /* fs_name may unprintable */  in exfat_read_boot_sector()
447 		exfat_err(sb, "bogus number of FAT structure");  in exfat_read_boot_sector()
456 		exfat_err(sb, "bogus sector size bits : %u",  in exfat_read_boot_sector()
465 		exfat_err(sb, "bogus sectors bits per cluster : %u",  in exfat_read_boot_sector()
498 		exfat_err(sb, "bogus fat length");  in exfat_read_boot_sector()
505 		exfat_err(sb, "bogus data start sector");  in exfat_read_boot_sector()
510 		exfat_warn(sb, "Volume was not properly unmounted. Some data may be corrupt. Please run fsck.");  in exfat_read_boot_sector()
512 		exfat_warn(sb, "Medium has reported failures. Some data may be lost.");  in exfat_read_boot_sector()
515 	sb->s_maxbytes = (u64)(sbi->num_clusters - EXFAT_RESERVED_CLUSTERS) <<  in exfat_read_boot_sector()
519 	if (exfat_calibrate_blocksize(sb, 1 << p_boot->sect_size_bits))  in exfat_read_boot_sector()
525 static int exfat_verify_boot_region(struct super_block *sb)  in exfat_verify_boot_region()  argument
534 		bh = sb_bread(sb, sn);  in exfat_verify_boot_region()
540 			p_sig = (__le32 *)&bh->b_data[sb->s_blocksize - 4];  in exfat_verify_boot_region()
542 				exfat_warn(sb, "Invalid exboot-signature(sector = %d): 0x%08x",  in exfat_verify_boot_region()
546 		chksum = exfat_calc_chksum32(bh->b_data, sb->s_blocksize,  in exfat_verify_boot_region()
552 	bh = sb_bread(sb, sn);  in exfat_verify_boot_region()
556 	for (i = 0; i < sb->s_blocksize; i += sizeof(u32)) {  in exfat_verify_boot_region()
559 			exfat_err(sb, "Invalid boot checksum (boot checksum : 0x%08x, checksum : 0x%08x)",  in exfat_verify_boot_region()
570 static int __exfat_fill_super(struct super_block *sb)  in __exfat_fill_super()  argument
573 	struct exfat_sb_info *sbi = EXFAT_SB(sb);  in __exfat_fill_super()
575 	ret = exfat_read_boot_sector(sb);  in __exfat_fill_super()
577 		exfat_err(sb, "failed to read boot sector");  in __exfat_fill_super()
581 	ret = exfat_verify_boot_region(sb);  in __exfat_fill_super()
583 		exfat_err(sb, "invalid boot region");  in __exfat_fill_super()
587 	ret = exfat_create_upcase_table(sb);  in __exfat_fill_super()
589 		exfat_err(sb, "failed to load upcase table");  in __exfat_fill_super()
593 	ret = exfat_load_bitmap(sb);  in __exfat_fill_super()
595 		exfat_err(sb, "failed to load alloc-bitmap");  in __exfat_fill_super()
599 	ret = exfat_count_used_clusters(sb, &sbi->used_clusters);  in __exfat_fill_super()
601 		exfat_err(sb, "failed to scan clusters");  in __exfat_fill_super()
616 static int exfat_fill_super(struct super_block *sb, struct fs_context *fc)  in exfat_fill_super()  argument
618 	struct exfat_sb_info *sbi = sb->s_fs_info;  in exfat_fill_super()
626 	if (opts->discard && !bdev_max_discard_sectors(sb->s_bdev)) {  in exfat_fill_super()
627 		exfat_warn(sb, "mounting with \"discard\" option, but the device does not support discard");  in exfat_fill_super()
631 	sb->s_flags |= SB_NODIRATIME;  in exfat_fill_super()
632 	sb->s_magic = EXFAT_SUPER_MAGIC;  in exfat_fill_super()
633 	sb->s_op = &exfat_sops;  in exfat_fill_super()
635 	sb->s_time_gran = 10 * NSEC_PER_MSEC;  in exfat_fill_super()
636 	sb->s_time_min = EXFAT_MIN_TIMESTAMP_SECS;  in exfat_fill_super()
637 	sb->s_time_max = EXFAT_MAX_TIMESTAMP_SECS;  in exfat_fill_super()
639 	err = __exfat_fill_super(sb);  in exfat_fill_super()
641 		exfat_err(sb, "failed to recognize exfat type");  in exfat_fill_super()
646 	exfat_hash_init(sb);  in exfat_fill_super()
653 			exfat_err(sb, "IO charset %s not found",  in exfat_fill_super()
661 		sb->s_d_op = &exfat_utf8_dentry_ops;  in exfat_fill_super()
663 		sb->s_d_op = &exfat_dentry_ops;  in exfat_fill_super()
665 	root_inode = new_inode(sb);  in exfat_fill_super()
667 		exfat_err(sb, "failed to allocate root inode");  in exfat_fill_super()
676 		exfat_err(sb, "failed to initialize root inode");  in exfat_fill_super()
683 	sb->s_root = d_make_root(root_inode);  in exfat_fill_super()
684 	if (!sb->s_root) {  in exfat_fill_super()
685 		exfat_err(sb, "failed to get the root dentry");  in exfat_fill_super()
694 	sb->s_root = NULL;  in exfat_fill_super()
767 static void exfat_kill_sb(struct super_block *sb)  in exfat_kill_sb()  argument
769 	struct exfat_sb_info *sbi = sb->s_fs_info;  in exfat_kill_sb()
771 	kill_block_super(sb);  in exfat_kill_sb()