X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=libringbuffer%2Fring_buffer_backend.c;h=e7a00144544a9d3e10b502cbdef0bececc990f5b;hb=047aa546706c30b3fb79db1f65e8dd37ad7376b1;hp=e949a5e292d2048f306760f329f64d668a0c30cd;hpb=12bcbbdbd7eb6b3cb111ab91b316b14ac210ceb2;p=lttng-ust.git

diff --git a/libringbuffer/ring_buffer_backend.c b/libringbuffer/ring_buffer_backend.c
index e949a5e2..e7a00144 100644
--- a/libringbuffer/ring_buffer_backend.c
+++ b/libringbuffer/ring_buffer_backend.c
@@ -1,9 +1,21 @@
 /*
  * ring_buffer_backend.c
  *
- * Copyright (C) 2005-2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2005-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * Dual LGPL v2.1/GPL v2 license.
+ * 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
  */
 
 #define _GNU_SOURCE
@@ -210,9 +222,6 @@ int channel_backend_init(struct channel_backend *chanb,
 	if (!name)
 		return -EPERM;
 
-	if (!(subbuf_size && num_subbuf))
-		return -EPERM;
-
 	/* Check that the subbuffer size is larger than a page. */
 	if (subbuf_size < PAGE_SIZE)
 		return -EINVAL;
@@ -271,7 +280,8 @@ int channel_backend_init(struct channel_backend *chanb,
 		for_each_possible_cpu(i) {
 			struct shm_object *shmobj;
 
-			shmobj = shm_object_table_append(handle->table, shmsize);
+			shmobj = shm_object_table_alloc(handle->table, shmsize,
+					SHM_OBJECT_SHM);
 			if (!shmobj)
 				goto end;
 			align_shm(shmobj, __alignof__(struct lttng_ust_lib_ring_buffer));
@@ -289,7 +299,8 @@ int channel_backend_init(struct channel_backend *chanb,
 		struct shm_object *shmobj;
 		struct lttng_ust_lib_ring_buffer *buf;
 
-		shmobj = shm_object_table_append(handle->table, shmsize);
+		shmobj = shm_object_table_alloc(handle->table, shmsize,
+					SHM_OBJECT_SHM);
 		if (!shmobj)
 			goto end;
 		align_shm(shmobj, __alignof__(struct lttng_ust_lib_ring_buffer));