Take down condition subsystem at shutdown/reboot

Leave the system as it was when we found it.  Also, we'll build things
on top of cond_is_available() to handle pre bootstrap and pre shutdown
tasks.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/cond-w.c

@@ -410,6 +410,15 @@ void cond_deassert(const char *pat)
 	nftw(cond_path(pat), deassert, 20, FTW_DEPTH);
 }
 
+/*
+ * Check if we have bootstrapped enough of the system to use conditions.
+ * Will answer 'No' before bootstrap done *and* at shutdown/reboot.
+ */
+int cond_is_available(void)
+{
+	return fisdir(_PATH_COND);
+}
+
 void cond_init(void)
 {
 	char path[MAX_ARG_LEN];
@@ -423,6 +432,11 @@ void cond_init(void)
 	cond_boot_strap();
 }
 
+void cond_exit(void)
+{
+	cond_delpath(_PATH_COND);
+}
+
 /**
  * Local Variables:
  *  indent-tabs-mode: t

src/cond.h

@@ -46,7 +46,10 @@ int  cond_clear_noupdate(const char *name);
 void cond_reassert    (const char *pat);
 void cond_deassert    (const char *pat);
 
+int  cond_is_available(void);
+
 void cond_init        (void);
+void cond_exit        (void);
 
 #endif	/* FINIT_COND_H_ */
 

src/sig.c

@@ -322,6 +322,9 @@ void do_shutdown(shutop_t op)
 	plugin_exit();
 	api_exit();
 
+	/* We can no longer act on conditions, activate script runner */
+	cond_exit();
+
 	/* Reap 'em */
 	while (waitpid(-1, NULL, WNOHANG) > 0)
 		;