SoW-2019-0002: Dynamic Snapshot

[lttng-tools.git] / include / lttng / action / start-session-internal.h

diff --git a/include/lttng/action/start-session-internal.h b/include/lttng/action/start-session-internal.h
new file mode 100644 (file)
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+++ b/include/lttng/action/start-session-internal.h
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+/*
+ * Copyright (C) 2019 EfficiOS, Inc.
+ *
+ * This library 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.
+ *
+ * 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
+ */
+
+#ifndef LTTNG_ACTION_START_SESSION_INTERNAL_H
+#define LTTNG_ACTION_START_SESSION_INTERNAL_H
+
+#include <sys/types.h>
+
+#include <common/macros.h>
+
+struct lttng_action;
+struct lttng_buffer_view;
+
+/*
+ * Create a "start session" action from a buffer view.
+ *
+ * On success, return the number of bytes consumed from `view`, and the created
+ * action in `*action`.  On failure, return -1.
+ */
+LTTNG_HIDDEN
+extern ssize_t lttng_action_start_session_create_from_buffer(
+               const struct lttng_buffer_view *view,
+               struct lttng_action **action);
+
+#endif /* LTTNG_ACTION_START_SESSION_INTERNAL_H */