X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Fring_buffer_vfs.c;h=034c6fdd15d4c9a23680190c12811907c4685253;hb=886d51a3d7ed5fa6b41d7f19b3e14ae6c535a44c;hp=1708ffd6bc9b1b80f06da11af5cb7830c2a6923b;hpb=a33c99273818348fe61ba5bbd08fa61382eab22b;p=lttng-modules.git

diff --git a/lib/ringbuffer/ring_buffer_vfs.c b/lib/ringbuffer/ring_buffer_vfs.c
index 1708ffd6..034c6fdd 100644
--- a/lib/ringbuffer/ring_buffer_vfs.c
+++ b/lib/ringbuffer/ring_buffer_vfs.c
@@ -1,11 +1,23 @@
 /*
  * ring_buffer_vfs.c
  *
- * Copyright (C) 2009-2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
  * Ring Buffer VFS file operations.
  *
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <linux/module.h>
@@ -42,6 +54,9 @@ int lib_ring_buffer_open(struct inode *inode, struct file *file)
 	struct lib_ring_buffer *buf = inode->i_private;
 	int ret;
 
+	if (!buf)
+		return -EINVAL;
+
 	ret = lib_ring_buffer_open_read(buf);
 	if (ret)
 		return ret;
@@ -85,7 +100,7 @@ unsigned int lib_ring_buffer_poll(struct file *filp, poll_table *wait)
 	unsigned int mask = 0;
 	struct lib_ring_buffer *buf = filp->private_data;
 	struct channel *chan = buf->backend.chan;
-	const struct lib_ring_buffer_config *config = chan->backend.config;
+	const struct lib_ring_buffer_config *config = &chan->backend.config;
 	int finalized, disabled;
 
 	if (filp->f_mode & FMODE_READ) {
@@ -162,7 +177,7 @@ long lib_ring_buffer_ioctl(struct file *filp, unsigned int cmd, unsigned long ar
 {
 	struct lib_ring_buffer *buf = filp->private_data;
 	struct channel *chan = buf->backend.chan;
-	const struct lib_ring_buffer_config *config = chan->backend.config;
+	const struct lib_ring_buffer_config *config = &chan->backend.config;
 
 	if (lib_ring_buffer_channel_is_disabled(chan))
 		return -EIO;
@@ -259,7 +274,7 @@ long lib_ring_buffer_compat_ioctl(struct file *filp, unsigned int cmd,
 {
 	struct lib_ring_buffer *buf = filp->private_data;
 	struct channel *chan = buf->backend.chan;
-	const struct lib_ring_buffer_config *config = chan->backend.config;
+	const struct lib_ring_buffer_config *config = &chan->backend.config;
 
 	if (lib_ring_buffer_channel_is_disabled(chan))
 		return -EIO;