[Patch 2/4] chunkd: make NID not mandatory

[Pete Zaitcev <zaitcev@redhat.com>]

It's useful to quit with an error message if a user plainly forgets
to configure NID, but on the other hand someone might want to test
something or such. Maybe add a --standalone option for that?

Signed-Off-By: Pete Zaitcev <zaitcev@redhat.com>

diff --git a/server/cldu.c b/server/cldu.c
index 74bbd22..2835b2d 100644
--- a/server/cldu.c
+++ b/server/cldu.c
@@ -507,6 +507,8 @@ int cld_begin(const char *thishost, const char *thiscell, uint32_t nid,
 
 	cld_ops.printf = log;
 
+	if (!nid)
+		return 0;
 	cldc_init();
 
 	/*
@@ -574,6 +576,9 @@ void cld_end(void)
 {
 	int i;
 
+	if (!ses.nid)
+		return;
+
 	if (ses.lib) {
 		event_del(&ses.ev);
 		// if (ses.sess_open)	/* kill it always, include half-open */
diff --git a/server/config.c b/server/config.c
index f577dc6..dc97587 100644
--- a/server/config.c
+++ b/server/config.c
@@ -449,10 +449,17 @@ void read_config(void)
 	}
 
 	if (chunkd_srv.nid == 0) {	/* We have no NID, it's fatal */
+#if 0 /* Not having NID is made non-fatal, because of CLD-less applications */
 		if (!ctx.badnid) {	/* NID is missing (not invalid) */
 			applog(LOG_ERR, "No NID configured");
 		}
 		exit(1);
+#else
+		if (ctx.badnid)
+			exit(1);
+		if (debugging)
+			applog(LOG_DEBUG, "No NID configured");
+#endif
 	}
 
 	free(ctx.geo_area);