Hurd: recvfrom(): take into account null address ports

diff --git a/ChangeLog b/ChangeLog
index 1591ca9e17910bacd846a73f0100068be5c235d8..ac0ad18976061a52b197473c7b5954c68b8638eb 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,12 @@
+2012-05-10  Pino Toscano  <toscano.pino@tiscali.it>
+
+       * sysdeps/mach/hurd/recvfrom.c (__recvfrom): Check also for a null
+       address port.  Set ADDR_LEN to 0 when not filling ADDRARG.
+
 2012-05-10  Samuel Thibault  <samuel.thibault@ens-lyon.org>
 
-        * sysdeps/mach/hurd/readlinkat.c: New file, heavily derived from
-        sysdeps/mach/hurd/readlink.c.
+       * sysdeps/mach/hurd/readlinkat.c: New file, heavily derived from
+       sysdeps/mach/hurd/readlink.c.
 
        * posix/tst-sysconf.c (posix_options): Only use
        _POSIX_PRIORITIZED_IO, _POSIX_PRIORITY_SCHEDULING, and

diff --git a/sysdeps/mach/hurd/recvfrom.c b/sysdeps/mach/hurd/recvfrom.c
index f5913361157511c9bce6bd6118c8bab058553d5e..3a094aa0d2c9fda111aa601be72129020dc9e262 100644 (file)
--- a/sysdeps/mach/hurd/recvfrom.c
+++ b/sysdeps/mach/hurd/recvfrom.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1994, 1997, 1999, 2001, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1994-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -54,7 +54,7 @@ __recvfrom (fd, buf, n, flags, addrarg, addr_len)
     return __hurd_sockfail (fd, flags, err);
 
   /* Get address data for the returned address port if requested.  */
-  if (addr != NULL)
+  if (addr != NULL && addrport != MACH_PORT_NULL)
     {
       char *buf = (char *) addr;
       mach_msg_type_number_t buflen = *addr_len;
@@ -88,6 +88,8 @@ __recvfrom (fd, buf, n, flags, addrarg, addr_len)
       if (buflen > 0)
        addr->sa_family = type;
     }
+  else if (addr_len != NULL)
+    *addr_len = 0;
 
   __mach_port_deallocate (__mach_task_self (), addrport);