1 files changed, 55 insertions, 0 deletions
diff --git a/test/packetdrill/pipe.c b/test/packetdrill/pipe.c
new file mode 100644
index 0000000..e4297b2
--- /dev/null
+++ b/test/packetdrill/pipe.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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.
+ */
+/*
+ * Author: weiwan@google.com (Wei Wang)
+ *
+ * Implementation for pipe related state and logic.
+ */
+
+#include "pipe.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include "run.h"
+
+void pipe_free(struct pipe *pipe)
+{
+	memset(pipe, 0, sizeof(*pipe));
+	free(pipe);
+}
+
+void pipe_close(struct state *state, struct fd_state *fd)
+{
+	pipe_free(fd_to_pipe(fd));
+}
+
+/* Global info about pipe descriptors that point to pipes. */
+struct fd_ops pipe_ops = {
+	.type = FD_PIPE,
+	.close = pipe_close,
+};
+
+struct pipe *pipe_new(struct state *state)
+{
+	struct pipe *pipe = calloc(1, sizeof(struct pipe));
+
+	pipe->fd.ops = &pipe_ops;
+	state_add_fd(state, to_fd(pipe));
+	return pipe;
+}