Fix: introduce lttng_get_unused_fd() wrapper for 3.19 kernels

[lttng-modules.git] / wrapper / file.h

diff --git a/wrapper/file.h b/wrapper/file.h
new file mode 100644 (file)
index 0000000..2440745
--- /dev/null
+++ b/wrapper/file.h
@@ -0,0 +1,47 @@
+#ifndef _LTTNG_WRAPPER_FILE_H
+#define _LTTNG_WRAPPER_FILE_H
+
+/*
+ * wrapper/file.h
+ *
+ * wrapper around linux/file.h.
+ *
+ * Copyright (C) 2014 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/version.h>
+#include <linux/file.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)
+
+static
+inline int lttng_get_unused_fd(void)
+{
+       return get_unused_fd_flags(0);
+}
+
+#else /* #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0) */
+
+static
+inline int lttng_get_unused_fd(void)
+{
+       return get_unused_fd();
+}
+
+#endif /* #else #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0) */
+
+#endif /* _LTTNG_WRAPPER_FILE_H */