Merge pull request #1272 from teselkin/fix-dpkginfo-init-1.2

dpkginfo_init doesn't check if dpkg cache initialization has succeeded.

Author: jan-cerny

src/OVAL/probes/unix/linux/dpkginfo.c

@@ -62,16 +62,23 @@
 
 
 struct dpkginfo_global {
+        int init_done;
         pthread_mutex_t mutex;
 };
 
-static struct dpkginfo_global g_dpkg;
+static struct dpkginfo_global g_dpkg = {
+        .init_done = -1,
+};
 
 
 void *probe_init(void)
 {
         pthread_mutex_init (&(g_dpkg.mutex), NULL);
-        dpkginfo_init();
+
+        g_dpkg.init_done = dpkginfo_init();
+        if (g_dpkg.init_done < 0) {
+                dE("dpkginfo_init has failed.");
+        }
 
         return ((void *)&g_dpkg);
 }
@@ -97,6 +104,11 @@ int probe_main (probe_ctx *ctx, void *arg)
 		return PROBE_EINIT;
 	}
 
+        if (g_dpkg.init_done < 0) {
+                probe_cobj_set_flag(probe_ctx_getresult(ctx), SYSCHAR_FLAG_UNKNOWN);
+                return 0;
+        }
+
 	obj = probe_ctx_getobject(ctx);
 	ent = probe_obj_getent(obj, "name", 1);