irmd: Revise IRMd internals

This is a full revision of the IRMd internal implementation.

The registry is now a proper subcomponent managing its own internal
lock (a single mutex). Some tests are added for the registry and its
data structures. Some macros for tests are added in <ouroboros/test.h>.

Flow allocation is now more symmetric between the client side (alloc)
and server size (accept). Each will create a flow in pending state
(ALLOC_PENDING/ACCEPT_PENDING) that is potentially fulfilled by an
IPCP using respond_alloc and respond_accept primitives. Deallocation
is split in flow_dealloc (application side) and ipcp_flow_dealloc
(IPCP side) to get the flow in DEALLOC_PENDING and DEALLOCATED state.

Cleanup of failed flow allocation is now properly handled instead of
relying on the sanitizer thread. The new sanitizer only needs to
monitor crashed processes.

On shutdown, the IRMd will now detect hanging processes and SIGKILL
them and clean up their fuse mountpoints if needed.

A lot of other things have been cleaned up and shuffled around a bit.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

1 files changed, 5 insertions, 11 deletions

diff --git a/src/irmd/irmd.h b/src/irmd/irmd.h
index 2059ad55..6db8b5bd 100644
--- a/src/irmd/irmd.h
+++ b/src/irmd/irmd.h
@@ -26,7 +26,7 @@
 #include <ouroboros/ipcp.h>
 #include <ouroboros/irm.h>
 
-int create_ipcp(const struct ipcp_info * info);
+int create_ipcp(struct ipcp_info * info);
 
 int bootstrap_ipcp(pid_t                pid,
                    struct ipcp_config * conf);
@@ -39,11 +39,7 @@ int connect_ipcp(pid_t        pid,
                  const char * component,
                  qosspec_t    qs);
 
-int get_layer_for_ipcp(pid_t  pid,
-                       char * buf);
-
-int name_create(const char *     name,
-                enum pol_balance pol);
+int name_create(const struct name_info * info);
 
 int name_reg(const char * name,
              pid_t        pid);
@@ -51,10 +47,8 @@ int name_reg(const char * name,
 int bind_process(pid_t        pid,
                  const char * name);
 
-int bind_program(const char *  prog,
-                 const char *  name,
-                 uint16_t      flags,
-                 int           argc,
-                 char **       argv);
+int bind_program(char **      exec,
+                 const char * name,
+                 uint8_t      flags);
 
 #endif /* OUROBOROS_IRMD_H*/
\ No newline at end of file