ipcpd: initial IPC processes

Basic functions for implementation of IPC processes, and
implementation of core functions of the shim IPCP over UDP.  Updates
to the build system to compile these IPC processes, as well as some
fixes in the irmd (rudimentary capturing exit signals) and some fixes
in the library, mainly relating to the messaging.

Basic implementation of creation / bootstrapping / deletion of the
shim UDP. Placeholders for other functions.

1 files changed, 8 insertions, 6 deletions

diff --git a/include/ouroboros/flow.h b/include/ouroboros/flow.h
index 7d8c311e..000de5ad 100644
--- a/include/ouroboros/flow.h
+++ b/include/ouroboros/flow.h
@@ -24,7 +24,7 @@
 #define OUROBOROS_FLOW_H
 
 #include <ouroboros/common.h>
-
+#include <ouroboros/list.h>
 #include <pthread.h>
 
 /* same values as fcntl.h */
@@ -39,17 +39,19 @@
 #define FLOW_O_INVALID  (FLOW_O_WRONLY | FLOW_O_RDWR)
 
 enum flow_state {
-        FLOW_INIT = 0,
+        FLOW_NULL = 0,
         FLOW_ALLOCATED,
         FLOW_PENDING
 };
 
 typedef struct flow {
-        int32_t         port_id;
-        uint16_t        oflags;
-        enum flow_state state;
+        struct list_head list;
+
+        int32_t          port_id;
+        uint16_t         oflags;
+        enum flow_state  state;
 
-        pthread_mutex_t lock;
+        pthread_mutex_t  lock;
 } flow_t;
 
 flow_t * flow_create(int32_t   port_id);