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, 11 insertions, 10 deletions

diff --git a/src/irmd/reg/prog.h b/src/irmd/reg/prog.h
index fc25c29e..a98fc6a1 100644
--- a/src/irmd/reg/prog.h
+++ b/src/irmd/reg/prog.h
@@ -24,22 +24,20 @@
 #define OUROBOROS_IRMD_REG_PROG_H
 
 #include <ouroboros/list.h>
+#include <ouroboros/proc.h>
 
-#include <unistd.h>
 #include <stdint.h>
 
 struct reg_prog {
         struct list_head next;
-        char *           prog;    /* name of binary */
-        uint32_t         flags;
-        char **          argv;
-        struct list_head names; /* names that all instances will listen for */
-};
 
-struct reg_prog * reg_prog_create(const char *  prog,
-                                  uint32_t      flags,
-                                  int           argc,
-                                  char **       argv);
+        struct prog_info info;
+
+        struct list_head names;   /* names to listen for       */
+        size_t           n_names; /* number of names in list   */
+ };
+
+struct reg_prog * reg_prog_create(const struct prog_info * info);
 
 void              reg_prog_destroy(struct reg_prog * prog);
 
@@ -49,4 +47,7 @@ int               reg_prog_add_name(struct reg_prog * prog,
 void              reg_prog_del_name(struct reg_prog * prog,
                                     const char *      name);
 
+bool              reg_prog_has_name(const struct reg_prog * prog,
+                                    const char *            name);
+
 #endif /* OUROBOROS_IRMD_REG_PROG_H */