rpcsvc: check for listener on default port used by mgmt (6969) while registering programs.

- If programs have not provided a default port, rpcsvc tries to allocate a
   listener bound to default port. While registering programs, if programs
   have not given any port information, programs will be associated with
   either default listener or the one provided in options provided during
   rpcsvc_init, with latter given more precedence.

Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875

1 files changed, 5 insertions, 0 deletions

diff --git a/rpc/rpc-lib/src/rpcsvc.c b/rpc/rpc-lib/src/rpcsvc.c
index e12403e20..c4c9fcaa2 100644
--- a/rpc/rpc-lib/src/rpcsvc.c
+++ b/rpc/rpc-lib/src/rpcsvc.c
@@ -1704,6 +1704,10 @@ rpcsvc_program_register (rpcsvc_t *svc, rpcsvc_program_t program)
         }
 
         listener = rpcsvc_get_listener (svc, listen_port, NULL);
+        if ((listener == NULL) && (listen_port == RPCSVC_DEFAULT_LISTEN_PORT)) {
+                listener = rpcsvc_get_listener (svc, 6969, NULL);
+        }
+
         if ((listener == NULL) || (listener->trans == NULL)) {
                 if ((listener != NULL) && (listener->trans == NULL)) {
                         gf_log (GF_RPCSVC, GF_LOG_DEBUG,
@@ -1741,6 +1745,7 @@ rpcsvc_program_register (rpcsvc_t *svc, rpcsvc_program_t program)
                 listener = rpcsvc_create_listener (svc, program.options,
                                                    program.progname);
                 if (listener == NULL) {
+                        ret = -1;
                         gf_log (GF_RPCSVC, GF_LOG_DEBUG,
                                 "creation of listener for program (%s) failed",
                                 program.progname);