libtirpc/SOURCES/libtirpc-1.1.4-v2proto-mech.patch
2022-11-08 13:32:48 +00:00

89 lines
2.9 KiB
Diff

diff -up libtirpc-1.1.4/man/rpcbind.3t.orig libtirpc-1.1.4/man/rpcbind.3t
--- libtirpc-1.1.4/man/rpcbind.3t.orig 2018-08-27 10:06:49.000000000 -0400
+++ libtirpc-1.1.4/man/rpcbind.3t 2022-08-02 11:21:30.134642780 -0400
@@ -187,6 +187,8 @@ in
.El
.Sh AVAILABILITY
These functions are part of libtirpc.
+.Sh ENVIRONMENT
+If RPCB_V2FIRST is defined, rpcbind protocol version tryout algorithm changes from v4,v2,v3 to v2,v4,v3.
.Sh SEE ALSO
.Xr rpc_clnt_calls 3 ,
.Xr rpc_svc_calls 3 ,
diff -up libtirpc-1.1.4/src/rpcb_clnt.c.orig libtirpc-1.1.4/src/rpcb_clnt.c
--- libtirpc-1.1.4/src/rpcb_clnt.c.orig 2022-08-02 11:20:42.795833195 -0400
+++ libtirpc-1.1.4/src/rpcb_clnt.c 2022-08-02 11:21:30.135642797 -0400
@@ -818,7 +818,8 @@ error:
* The algorithm used: If the transports is TCP or UDP, it first tries
* version 4 (srv4), then 3 and then fall back to version 2 (portmap).
* With this algorithm, we get performance as well as a plan for
- * obsoleting version 2.
+ * obsoleting version 2. This behaviour is reverted to old algorithm
+ * if RPCB_V2FIRST environment var is defined
*
* For all other transports, the algorithm remains as 4 and then 3.
*
@@ -839,6 +840,10 @@ __rpcb_findaddr_timed(program, version,
#ifdef NOTUSED
static bool_t check_rpcbind = TRUE;
#endif
+
+#ifdef PORTMAP
+ static bool_t portmap_first = FALSE;
+#endif
CLIENT *client = NULL;
RPCB parms;
enum clnt_stat clnt_st;
@@ -895,8 +900,18 @@ __rpcb_findaddr_timed(program, version,
parms.r_addr = (char *) &nullstring[0];
}
- /* First try from start_vers(4) and then version 3 (RPCBVERS) */
+ /* First try from start_vers(4) and then version 3 (RPCBVERS), except
+ * if env. var RPCB_V2FIRST is defined */
+
+#ifdef PORTMAP
+ if (getenv(V2FIRST)) {
+ portmap_first = TRUE;
+ LIBTIRPC_DEBUG(3, ("__rpcb_findaddr_timed: trying v2-port first\n"));
+ goto portmap;
+ }
+#endif
+rpcbind:
CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *) &rpcbrmttime);
for (vers = start_vers; vers >= RPCBVERS; vers--) {
/* Set the version */
@@ -944,10 +959,17 @@ __rpcb_findaddr_timed(program, version,
}
#ifdef PORTMAP /* Try version 2 for TCP or UDP */
+ if (portmap_first)
+ goto error; /* we tried all versions if reached here */
+portmap:
if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
address = __try_protocol_version_2(program, version, nconf, host, tp);
- if (address == NULL)
- goto error;
+ if (address == NULL) {
+ if (portmap_first)
+ goto rpcbind;
+ else
+ goto error;
+ }
}
#endif /* PORTMAP */
diff -up libtirpc-1.1.4/tirpc/rpc/pmap_prot.h.orig libtirpc-1.1.4/tirpc/rpc/pmap_prot.h
--- libtirpc-1.1.4/tirpc/rpc/pmap_prot.h.orig 2018-08-27 10:06:49.000000000 -0400
+++ libtirpc-1.1.4/tirpc/rpc/pmap_prot.h 2022-08-02 11:21:30.135642797 -0400
@@ -84,6 +84,8 @@
#define PMAPPROC_DUMP ((u_long)4)
#define PMAPPROC_CALLIT ((u_long)5)
+#define V2FIRST "RPCB_V2FIRST"
+
struct pmap {
long unsigned pm_prog;
long unsigned pm_vers;