Staging: batman-adv: Mark debugfs files as nonseekable

We don't allow to seek in the debugfs socket and log files. Thus we
should mark the file descriptor as nonseekable.

Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/batman-adv/bat_debugfs.c

@@ -90,6 +90,7 @@ int debug_log(struct bat_priv *bat_priv, char *fmt, ...)
 
 static int log_open(struct inode *inode, struct file *file)
 {
+	nonseekable_open(inode, file);
 	file->private_data = inode->i_private;
 	inc_module_count();
 	return 0;
@@ -174,6 +175,7 @@ static const struct file_operations log_fops = {
 	.release        = log_release,
 	.read           = log_read,
 	.poll           = log_poll,
+	.llseek         = no_llseek,
 };
 
 static int debug_log_setup(struct bat_priv *bat_priv)

drivers/staging/batman-adv/icmp_socket.c

@@ -45,6 +45,8 @@ static int bat_socket_open(struct inode *inode, struct file *file)
 	unsigned int i;
 	struct socket_client *socket_client;
 
+	nonseekable_open(inode, file);
+
 	socket_client = kmalloc(sizeof(struct socket_client), GFP_KERNEL);
 
 	if (!socket_client)
@@ -283,6 +285,7 @@ static const struct file_operations fops = {
 	.read = bat_socket_read,
 	.write = bat_socket_write,
 	.poll = bat_socket_poll,
+	.llseek = no_llseek,
 };
 
 int bat_socket_setup(struct bat_priv *bat_priv)