Fix: uprobe: missing error code on allocation failure

[lttng-tools.git] / src / common / dynamic-buffer.h

diff --git a/src/common/dynamic-buffer.h b/src/common/dynamic-buffer.h
index cd23ccad4d4d45fcdc59254328180daf39b51586..3435c846c3bf60054a86339383d96aa8ccb42a97 100644 (file)
--- a/src/common/dynamic-buffer.h
+++ b/src/common/dynamic-buffer.h
@@ -1,18 +1,8 @@
 /*
- * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License, version 2.1 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
- * This program 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 program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef LTTNG_DYNAMIC_BUFFER_H
@@ -22,6 +12,8 @@
 #include <stdint.h>
 #include <common/macros.h>
 
+struct lttng_buffer_view;
+
 struct lttng_dynamic_buffer {
        char *data;
        /* size is the buffer's currently used capacity. */
@@ -56,11 +48,20 @@ int lttng_dynamic_buffer_append(struct lttng_dynamic_buffer *buffer,
  */
 LTTNG_HIDDEN
 int lttng_dynamic_buffer_append_buffer(struct lttng_dynamic_buffer *dst_buffer,
-               struct lttng_dynamic_buffer *src_buffer);
+               const struct lttng_dynamic_buffer *src_buffer);
+
+/*
+ * Performs the same action as lttng_dynamic_buffer_append(), but using a
+ * buffer view as the source buffer. The source buffer's size is used in lieu
+ * of "len".
+ */
+LTTNG_HIDDEN
+int lttng_dynamic_buffer_append_view(struct lttng_dynamic_buffer *buffer,
+               const struct lttng_buffer_view *view);
 
 /*
  * Set the buffer's size to new_size. The capacity of the buffer will
- * be expanded (if necessary) to accomodate new_size. Areas acquired by
+ * be expanded (if necessary) to accommodates new_size. Areas acquired by
  * a size increase will be zeroed.
  *
  * Be careful to expand the buffer's size _before_ calling out external
@@ -79,7 +80,7 @@ int lttng_dynamic_buffer_set_size(struct lttng_dynamic_buffer *buffer,
                size_t new_size);
 
 /*
- * Set the buffer's capacity to accomodate the new_capacity, allocating memory
+ * Set the buffer's capacity to accommodates the new_capacity, allocating memory
  * as necessary. The buffer's content is preserved. Setting a buffer's capacity
  * is meant as a _hint_ to the underlying buffer and is only optimization; no
  * guarantee is offered that subsequent calls to append or set_size will succeed.