mountd: Use static buffer when constructing junction export options

[nfs-utils.git] / utils / statd / simu.c

diff --git a/utils/statd/simu.c b/utils/statd/simu.c
index 82d794e1c2667a20198f0cb24a89bcf5e95f75ca..f1d0bf886f3dfb5caf87ebdeb38406a75db4b329 100644 (file)
--- a/utils/statd/simu.c
+++ b/utils/statd/simu.c
@@ -7,8 +7,12 @@
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif
+
+#include <netdb.h>
 #include <arpa/inet.h>
 
+#include "sockaddr.h"
+#include "rpcmisc.h"
 #include "statd.h"
 #include "notlist.h"
 
@@ -17,40 +21,39 @@ extern void my_svc_exit (void);
 
 /*
  * Services SM_SIMU_CRASH requests.
+ *
+ * Although the kernel contacts the statd service via only IPv4
+ * transports, the statd service can receive other requests, such
+ * as SM_NOTIFY, from remote peers via IPv6.
  */
 void *
-sm_simu_crash_1_svc (void *argp, struct svc_req *rqstp)
+sm_simu_crash_1_svc (__attribute__ ((unused)) void *argp, struct svc_req *rqstp)
 {
+  struct sockaddr *sap = nfs_getrpccaller(rqstp->rq_xprt);
+  char buf[INET6_ADDRSTRLEN];
   static char *result = NULL;
 
-#ifdef RESTRICTED_STATD
-       struct in_addr  caller;
-
-       /* 1.   Reject anyone not calling from 127.0.0.1.
-        *      Ignore the my_name specified by the caller, and
-        *      use "127.0.0.1" instead.
-        */
-       caller = svc_getcaller(rqstp->rq_xprt)->sin_addr;
-       if (caller.s_addr != htonl(INADDR_LOOPBACK)) {
-               note(N_WARNING,
-                       "Call to statd from non-local host %s",
-                       inet_ntoa(caller));
-               goto failure;
-       }
-       if (ntohs(svc_getcaller(rqstp->rq_xprt)->sin_port) >= 1024) {
-               note(N_WARNING,
-                    "Call to statd-simu-crash from unprivileged port\n");
-               goto failure;
-       }
-#endif
-  note (N_WARNING, "*** SIMULATING CRASH! ***");
+  xlog(D_CALL, "Received SM_SIMU_CRASH");
+
+  if (!nfs_is_v4_loopback(sap))
+    goto out_nonlocal;
+
+  if ((int)nfs_get_port(sap) >= IPPORT_RESERVED) {
+    xlog_warn("SM_SIMU_CRASH call from unprivileged port");
+    goto failure;
+  }
+
   my_svc_exit ();
 
   if (rtnl)
     nlist_kill (&rtnl);
 
-#ifdef RESTRICTED_STATD
  failure:
-#endif
   return ((void *)&result);
+
+ out_nonlocal:
+  if (!statd_present_address(sap, buf, sizeof(buf)))
+    buf[0] = '\0';
+  xlog_warn("SM_SIMU_CRASH call from non-local host %s", buf);
+  goto failure;
 }