Merged in sandervrijders/ouroboros/be-flow-down (pull request #596)

ipcpd, lib: Add flow down events

3 files changed, 12 insertions, 2 deletions

diff --git a/include/ouroboros/errno.h b/include/ouroboros/errno.h
index 7cd58aa5..1710f7f8 100644
--- a/include/ouroboros/errno.h
+++ b/include/ouroboros/errno.h
@@ -30,5 +30,6 @@
 #define EIRMD        1002 /* Failed to communicate with IRMD */
 #define EIPCP        1003 /* Failed to communicate with IPCP */
 #define EIPCPSTATE   1004 /* Target in wrong state */
+#define EFLOWDOWN    1005 /* Flow is down */
 
 #endif /* OUROBOROS_ERRNO_H */
diff --git a/include/ouroboros/fccntl.h b/include/ouroboros/fccntl.h
index d938439f..3bd09e65 100644
--- a/include/ouroboros/fccntl.h
+++ b/include/ouroboros/fccntl.h
@@ -33,6 +33,8 @@
 #define FLOWFRDWR     00000002 /* Read-write flow       */
 #define FLOWFACCMODE  00000003 /* Access mask           */
 
+#define FLOWFDOWN     00000004 /* Flow is down          */
+
 #define FLOWFNONBLOCK 00004000 /* Non-blocking flow     */
 #define FLOWFDEFAULT  00000002 /* Default, blocking, rw */
 
diff --git a/include/ouroboros/shm_rbuff.h b/include/ouroboros/shm_rbuff.h
index 55d03b41..af50aada 100644
--- a/include/ouroboros/shm_rbuff.h
+++ b/include/ouroboros/shm_rbuff.h
@@ -26,6 +26,12 @@
 #include <sys/types.h>
 #include <sys/time.h>
 
+#include <stdint.h>
+
+#define ACL_RDWR     0000
+#define ACL_RDONLY   0001
+#define ACL_FLOWDOWN 0002
+
 struct shm_rbuff;
 
 struct shm_rbuff * shm_rbuff_create(pid_t api,
@@ -38,9 +44,10 @@ void               shm_rbuff_close(struct shm_rbuff * rb);
 
 void               shm_rbuff_destroy(struct shm_rbuff * rb);
 
-void               shm_rbuff_block(struct shm_rbuff * rb);
+void               shm_rbuff_set_acl(struct shm_rbuff * rb,
+                                     uint32_t           flags);
 
-void               shm_rbuff_unblock(struct shm_rbuff * rb);
+uint32_t           shm_rbuff_get_acl(struct shm_rbuff * rb);
 
 void               shm_rbuff_fini(struct shm_rbuff * rb);