ubifs: switch to fscrypt_get_symlink()

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ubifs/file.c

@@ -1662,49 +1662,17 @@ static const char *ubifs_get_link(struct dentry *dentry,
 					    struct inode *inode,
 					    struct delayed_call *done)
 {
-	int err;
-	struct fscrypt_symlink_data *sd;
 	struct ubifs_inode *ui = ubifs_inode(inode);
-	struct fscrypt_str cstr;
-	struct fscrypt_str pstr;
 
-	if (!ubifs_crypt_is_encrypted(inode))
+	if (!IS_ENCRYPTED(inode))
 		return ui->data;
 
 	if (!dentry)
 		return ERR_PTR(-ECHILD);
 
-	err = fscrypt_get_encryption_info(inode);
-	if (err)
-		return ERR_PTR(err);
-
-	sd = (struct fscrypt_symlink_data *)ui->data;
-	cstr.name = sd->encrypted_path;
-	cstr.len = le16_to_cpu(sd->len);
-
-	if (cstr.len == 0)
-		return ERR_PTR(-ENOENT);
-
-	if ((cstr.len + sizeof(struct fscrypt_symlink_data) - 1) > ui->data_len)
-		return ERR_PTR(-EIO);
-
-	err = fscrypt_fname_alloc_buffer(inode, cstr.len, &pstr);
-	if (err)
-		return ERR_PTR(err);
-
-	err = fscrypt_fname_disk_to_usr(inode, 0, 0, &cstr, &pstr);
-	if (err) {
-		fscrypt_fname_free_buffer(&pstr);
-		return ERR_PTR(err);
-	}
-
-	pstr.name[pstr.len] = '\0';
-
-	set_delayed_call(done, kfree_link, pstr.name);
-	return pstr.name;
+	return fscrypt_get_symlink(inode, ui->data, ui->data_len, done);
 }
 
-
 const struct address_space_operations ubifs_file_address_operations = {
 	.readpage       = ubifs_readpage,
 	.writepage      = ubifs_writepage,