Currently opensm will silently fail if you pass '-g0 -B'. As you can't ask
for a port, how about exiting with failure in daemonize. That way the user
would see the reason for opensm's failure.
Index: main.c
===================================================================
--- main.c.orig 2010-09-04 12:04:59.000000000 +0200
+++ main.c 2012-07-09 13:42:56.757934702 +0200
@@ -464,6 +464,11 @@ static int daemonize(osm_opensm_t * osm)
pid_t pid;
int fd;
+ if ( INVALID_GUID == opt.gui ) {
+ fputs(stderr, "opensm: Invalid GUID specified: exiting because of
daemon mode");
+ return -1;
+ }
+
fd = open("/dev/null", O_WRONLY);
if (fd < 0) {
perror("open");
--
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