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-rw-r--r--src/lib/flow.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/src/lib/flow.c b/src/lib/flow.c
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index 00000000..04166298
--- /dev/null
+++ b/src/lib/flow.c
@@ -0,0 +1,83 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Flows
+ *
+ * Dimitri Staessens <dimitri.staessens@intec.ugent.be>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <malloc.h>
+#include <ouroboros/flow.h>
+
+#define OUROBOROS_PREFIX "ipcpd/flow"
+
+#include <ouroboros/logs.h>
+
+flow_t * flow_create(int32_t port_id)
+{
+ flow_t * flow = malloc(sizeof *flow);
+ if (flow == NULL) {
+ LOG_DBGF("Could not malloc flow.");
+ return NULL;
+ }
+
+ flow->port_id = port_id;
+ flow->oflags = FLOW_O_DEFAULT;
+ flow->state = FLOW_INIT;
+
+ pthread_mutex_init(&flow->lock, NULL);
+
+ return flow;
+}
+
+void flow_destroy(flow_t * flow)
+{
+ free(flow);
+}
+
+int flow_set_opts(flow_t * flow, uint16_t opts)
+{
+ if (flow == NULL) {
+ LOG_DBGF("Non-existing flow.");
+ return -1;
+ }
+
+ pthread_mutex_lock(&flow->lock);
+
+ if ((opts & FLOW_O_ACCMODE) == FLOW_O_ACCMODE) {
+ flow->oflags = FLOW_O_DEFAULT;
+ pthread_mutex_unlock(&flow->lock);
+ LOG_WARN("Invalid flow options. Setting default.");
+ return -1;
+ }
+
+ flow->oflags = opts;
+
+ pthread_mutex_unlock(&flow->lock);
+
+ return 0;
+}
+
+uint16_t flow_get_opts(const flow_t * flow)
+{
+ if (flow == NULL) {
+ LOG_DBGF("Non-existing flow.");
+ return FLOW_O_INVALID;
+ }
+
+ return flow->oflags;
+}