4 files changed, 30 insertions, 5 deletions
diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index 0724667d..b636e799 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -1328,6 +1328,18 @@ sk_passive_connected(sock *s, int type)
       log(L_WARN "SOCK: Cannot get remote IP address for TCP<");
   }
 
+  if (fd >= FD_SETSIZE)
+  {
+    /* FIXME: Call err_hook instead ? */
+    log(L_ERR "SOCK: Incoming connection from %I%J (port %d) %s",
+	t->daddr, ipa_is_link_local(t->daddr) ? t->iface : NULL,
+	t->dport, "rejected due to FD_SETSIZE limit");
+    close(fd);
+    t->fd = -1;
+    rfree(t);
+    return 1;
+  }
+
   if (sk_setup(t) < 0)
   {
     /* FIXME: Call err_hook instead ? */
@@ -1404,6 +1416,9 @@ sk_open(sock *s)
   if (fd < 0)
     ERR("socket");
 
+  if (fd >= FD_SETSIZE)
+    ERR2("FD_SETSIZE limit reached");
+
   s->af = af;
   s->fd = fd;
 
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index 5db682ca..63fc1c34 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -77,14 +77,15 @@ krt_io_init(void)
   krt_pool = rp_new(&root_pool, "Kernel Syncer");
   krt_filter_lp = lp_new(krt_pool, 4080);
   init_list(&krt_proto_list);
+  krt_sys_io_init();
 }
 
 /*
  *	Interfaces
  */
 
+struct kif_proto *kif_proto;
 static struct kif_config *kif_cf;
-static struct kif_proto *kif_proto;
 static timer *kif_scan_timer;
 static bird_clock_t kif_last_shot;
 
@@ -1126,7 +1127,11 @@ krt_start(struct proto *P)
   krt_learn_init(p);
 #endif
 
-  krt_sys_start(p);
+  if (!krt_sys_start(p))
+  {
+    rem_node(&p->krt_node);
+    return PS_START;
+  }
 
   krt_scan_timer_start(p);
 
@@ -1150,8 +1155,10 @@ krt_shutdown(struct proto *P)
   p->ready = 0;
   p->initialized = 0;
 
-  krt_sys_shutdown(p);
+  if (p->p.proto_state == PS_START)
+    return PS_DOWN;
 
+  krt_sys_shutdown(p);
   rem_node(&p->krt_node);
 
   return PS_DOWN;
diff --git a/sysdep/unix/krt.h b/sysdep/unix/krt.h
index 9d5d4e8c..d4a8717e 100644
--- a/sysdep/unix/krt.h
+++ b/sysdep/unix/krt.h
@@ -112,6 +112,8 @@ struct kif_proto {
   struct kif_state sys;		/* Sysdep state */
 };
 
+struct kif_proto *kif_proto;
+
 #define KIF_CF ((struct kif_config *)p->p.cf)
 
 struct proto_config * krt_init_config(int class);
@@ -119,8 +121,9 @@ struct proto_config * krt_init_config(int class);
 
 /* krt sysdep */
 
+void krt_sys_io_init(void);
 void krt_sys_init(struct krt_proto *);
-void krt_sys_start(struct krt_proto *);
+int krt_sys_start(struct krt_proto *);
 void krt_sys_shutdown(struct krt_proto *);
 int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o);
 
diff --git a/sysdep/unix/main.c b/sysdep/unix/main.c
index e31471da..24d34f60 100644
--- a/sysdep/unix/main.c
+++ b/sysdep/unix/main.c
@@ -96,7 +96,7 @@ drop_gid(gid_t gid)
 static inline void
 add_num_const(char *name, int val)
 {
-  struct symbol *s = cf_find_symbol(name);
+  struct symbol *s = cf_get_symbol(name);
   s->class = SYM_CONSTANT | T_INT;
   s->def = cfg_allocz(sizeof(struct f_val));
   SYM_TYPE(s) = T_INT;