2.5-18.1

1 files changed, 30 insertions, 35 deletions

diff --git a/nis/nis_callback.c b/nis/nis_callback.c
index b867b39ab7..e0acd9683a 100644
--- a/nis/nis_callback.c
+++ b/nis/nis_callback.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1997,1998,1999,2000,2005,2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Thorsten Kukuk <kukuk@suse.de>, 1997.
 
@@ -197,22 +197,18 @@ internal_nis_do_callback (struct dir_binding *bptr, netobj *cookie,
 			  struct nis_cb *cb)
 {
   struct timeval TIMEOUT = {25, 0};
-  bool_t cb_is_running = FALSE;
+  bool_t cb_is_running;
 
   data = cb;
 
   for (;;)
     {
-      struct pollfd *my_pollfd;
+      struct pollfd my_pollfd[svc_max_pollfd];
       int i;
 
       if (svc_max_pollfd == 0 && svc_pollfd == NULL)
         return NIS_CBERROR;
 
-      my_pollfd = malloc (sizeof (struct pollfd) * svc_max_pollfd);
-      if (__builtin_expect (my_pollfd == NULL, 0))
-	return NIS_NOMEMORY;
-
       for (i = 0; i < svc_max_pollfd; ++i)
         {
           my_pollfd[i].fd = svc_pollfd[i].fd;
@@ -220,20 +216,17 @@ internal_nis_do_callback (struct dir_binding *bptr, netobj *cookie,
           my_pollfd[i].revents = 0;
         }
 
-      switch (i = __poll (my_pollfd, svc_max_pollfd, 25*1000))
+      switch (i = TEMP_FAILURE_RETRY (__poll (my_pollfd, svc_max_pollfd,
+					      25*1000)))
         {
 	case -1:
-	  free (my_pollfd);
-	  if (errno == EINTR)
-	    continue;
 	  return NIS_CBERROR;
 	case 0:
-	  free (my_pollfd);
 	  /* See if callback 'thread' in the server is still alive. */
-	  memset ((char *) &cb_is_running, 0, sizeof (cb_is_running));
+	  cb_is_running = FALSE;
 	  if (clnt_call (bptr->clnt, NIS_CALLBACK, (xdrproc_t) xdr_netobj,
 			 (caddr_t) cookie, (xdrproc_t) xdr_bool,
-			 (caddr_t) & cb_is_running, TIMEOUT) != RPC_SUCCESS)
+			 (caddr_t) &cb_is_running, TIMEOUT) != RPC_SUCCESS)
 	    cb_is_running = FALSE;
 
 	  if (cb_is_running == FALSE)
@@ -244,7 +237,6 @@ internal_nis_do_callback (struct dir_binding *bptr, netobj *cookie,
 	  break;
 	default:
 	  svc_getreq_poll (my_pollfd, i);
-	  free (my_pollfd);
 	  if (data->nomore)
 	    return data->result;
 	}
@@ -274,16 +266,15 @@ __nis_create_callback (int (*callback) (const_nis_name, const nis_object *,
   struct nis_cb *cb;
   int sock = RPC_ANYSOCK;
   struct sockaddr_in sin;
-  int len = sizeof (struct sockaddr_in);
-  char addr[NIS_MAXNAMELEN + 1];
+  socklen_t len = sizeof (struct sockaddr_in);
   unsigned short port;
+  int nomsg = 0;
 
-  cb = (struct nis_cb *) calloc (1, sizeof (struct nis_cb));
+  cb = (struct nis_cb *) calloc (1,
+				 sizeof (struct nis_cb) + sizeof (nis_server));
   if (__builtin_expect (cb == NULL, 0))
     goto failed;
-  cb->serv = (nis_server *) calloc (1, sizeof (nis_server));
-  if (__builtin_expect (cb->serv == NULL, 0))
-    goto failed;
+  cb->serv = (nis_server *) (cb + 1);
   cb->serv->name = strdup (nis_local_principal ());
   if (__builtin_expect (cb->serv->name == NULL, 0))
     goto failed;
@@ -326,15 +317,20 @@ __nis_create_callback (int (*callback) (const_nis_name, const nis_object *,
   cb->serv->ep.ep_val[0].proto = strdup ((flags & USE_DGRAM) ? "udp" : "tcp");
   if (__builtin_expect (cb->serv->ep.ep_val[0].proto == NULL, 0))
     goto failed;
-  cb->xprt = (flags & USE_DGRAM) ? svcudp_bufcreate (sock, 100, 8192) :
-				   svctcp_create (sock, 100, 8192);
+  cb->xprt = ((flags & USE_DGRAM)
+	      ? svcudp_bufcreate (sock, 100, 8192)
+	      : svctcp_create (sock, 100, 8192));
+  if (cb->xprt == NULL)
+    {
+      nomsg = 1;
+      goto failed;
+    }
   cb->sock = cb->xprt->xp_sock;
   if (!svc_register (cb->xprt, CB_PROG, CB_VERS, cb_prog_1, 0))
     {
       xprt_unregister (cb->xprt);
       svc_destroy (cb->xprt);
       xdr_free ((xdrproc_t) _xdr_nis_server, (char *) cb->serv);
-      free (cb->serv);
       free (cb);
       syslog (LOG_ERR, "NIS+: failed to register callback dispatcher");
       return NULL;
@@ -345,30 +341,30 @@ __nis_create_callback (int (*callback) (const_nis_name, const nis_object *,
       xprt_unregister (cb->xprt);
       svc_destroy (cb->xprt);
       xdr_free ((xdrproc_t) _xdr_nis_server, (char *) cb->serv);
-      free (cb->serv);
       free (cb);
       syslog (LOG_ERR, "NIS+: failed to read local socket info");
       return NULL;
     }
   port = ntohs (sin.sin_port);
   get_myaddress (&sin);
-  snprintf (addr, sizeof (addr), "%s.%d.%d", inet_ntoa (sin.sin_addr),
-	    (port & 0xFF00) >> 8, port & 0x00FF);
-  cb->serv->ep.ep_val[0].uaddr = strdup (addr);
+
+  if (asprintf (&cb->serv->ep.ep_val[0].uaddr, "%s.%d.%d",
+		inet_ntoa (sin.sin_addr), (port & 0xFF00) >> 8, port & 0x00FF)
+      < 0)
+    goto failed;
 
   return cb;
 
  failed:
   if (cb)
     {
-      if (cb->serv)
-	{
-	  xdr_free ((xdrproc_t) _xdr_nis_server, (char *) cb->serv);
-	  free (cb->serv);
-	}
+      if (cb->xprt)
+	svc_destroy (cb->xprt);
+      xdr_free ((xdrproc_t) _xdr_nis_server, (char *) cb->serv);
       free (cb);
     }
-  syslog (LOG_ERR, "NIS+: out of memory allocating callback");
+  if (!nomsg)
+    syslog (LOG_ERR, "NIS+: out of memory allocating callback");
   return NULL;
 }
 
@@ -379,7 +375,6 @@ __nis_destroy_callback (struct nis_cb *cb)
   svc_destroy (cb->xprt);
   close (cb->sock);
   xdr_free ((xdrproc_t) _xdr_nis_server, (char *) cb->serv);
-  free (cb->serv);
   free (cb);
 
   return NIS_SUCCESS;