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Commit eaa693f4 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: introduce dot and dotdot name check 



This patch adds an inline function to check dot and dotdot names.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent c879f90d

fs/f2fs/f2fs.h

+11 −0
Original line number Original line Diff line number Diff line
@@ -1454,6 +1454,17 @@ static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) 
	sbi->sb->s_flags |= MS_RDONLY;

	sbi->sb->s_flags |= MS_RDONLY;

}

}





static inline bool is_dot_dotdot(const struct qstr *str)

{

	if (str->len == 1 && str->name[0] == '.')

		return true;



	if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')

		return true;



	return false;

}



#define get_inode_mode(i) \

#define get_inode_mode(i) \

	((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \

	((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \

	 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))

	 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))

fs/f2fs/hash.c

+1 −2
Original line number Original line Diff line number Diff line
@@ -79,8 +79,7 @@ f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info) 
	const unsigned char *name = name_info->name;

	const unsigned char *name = name_info->name;

	size_t len = name_info->len;

	size_t len = name_info->len;





	if ((len <= 2) && (name[0] == '.') &&

	if (is_dot_dotdot(name_info))

		(name[1] == '.' || name[1] == '\0'))

		return 0;

		return 0;





	/* Initialize the default seed for the hash checksum functions */

	/* Initialize the default seed for the hash checksum functions */