ext4: Limit number of links that can be created by ext4_link()



In ext4_link we need to check using EXT4_LINK_MAX, and not
EXT4_DIR_LINK_MAX(), since ext4_link() is creating hard links of
regular files, and not directories.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

parent 2c94eb86

fs/ext4/namei.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -2318,7 +2318,7 @@ static int ext4_link(struct dentry *old_dentry,
	struct inode *inode = old_dentry->d_inode;		struct inode *inode = old_dentry->d_inode;
	int err, retries = 0;		int err, retries = 0;

	if (EXT4_DIR_LINK_MAX(inode))		if (inode->i_nlink >= EXT4_LINK_MAX)
	return -EMLINK;		return -EMLINK;

	/*		/*