Allow direct access to the dirfd of a directory handle

Serialization functions need access to the dirfd of a directory handle
in order to pass the fd and re-build the directory handle in
another process.

This function should not be used for other purposes. It is
also only available in the 'enable-dirfd' configuration, which
is assumed for the session daemon.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/src/common/compat/directory-handle.h b/src/common/compat/directory-handle.h
index fbdc19179e594aa358ec12564b46cdc7aae999fc..605c3dc814743e3ab43a3d206f4f87436a9b7da6 100644 (file)
--- a/src/common/compat/directory-handle.h
+++ b/src/common/compat/directory-handle.h
@@ -32,6 +32,14 @@
 struct lttng_directory_handle {
        int dirfd;
 };
+
+static inline
+int lttng_directory_handle_get_dirfd(
+               const struct lttng_directory_handle *handle)
+{
+       return handle->dirfd;
+}
+
 #else
 struct lttng_directory_handle {
        char *base_path;