/*
* 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>
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;
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) {
- init_poll_funcptr(wait, wrapper_pollwait_exclusive);
+ poll_wait_set_exclusive(wait);
poll_wait(filp, &buf->read_wait, wait);
finalized = lib_ring_buffer_is_finalized(config, buf);
{
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;
return put_ulong(buf->backend.array[sb_bindex]->mmap_offset,
arg);
}
+ case RING_BUFFER_FLUSH:
+ lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE);
+ return 0;
default:
return -ENOIOCTLCMD;
}
{
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;
return -EINVAL;
return put_ulong(read_offset, arg);
}
+ case RING_BUFFER_FLUSH:
+ lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE);
+ return 0;
default:
return -ENOIOCTLCMD;
}
#endif
const struct file_operations lib_ring_buffer_file_operations = {
+ .owner = THIS_MODULE,
.open = lib_ring_buffer_open,
.release = lib_ring_buffer_release,
.poll = lib_ring_buffer_poll,