lwip,pfinet: Fix crash on make_sock_user getting EINTR

_ports_create_port_internal may return EINTR.

* lwip/port-objs.c (make_sock_user): Set errno when ports_create_port
returns an error.
* pfinet/socket.c (make_sock_user): Likewise.
* lwip/io-ops.c (lwip_S_io_reauthenticate): Loop while make_sock_user
errors with EINTR.
* pfinet/io-ops.c (S_io_reauthenticate): Likewise.

1 files changed, 8 insertions, 1 deletions

diff --git a/pfinet/io-ops.c b/pfinet/io-ops.c
index e0e1875b..c1b6e5b5 100644
--- a/pfinet/io-ops.c
+++ b/pfinet/io-ops.c
@@ -374,7 +374,14 @@ S_io_reauthenticate (struct sock_user *user,
   aux_gids = agbuf;
 
   pthread_mutex_lock (&global_lock);
-  newuser = make_sock_user (user->sock, 0, 1, 0);
+  do
+    newuser = make_sock_user (user->sock, 0, 1, 0);
+  while (!newuser && errno == EINTR);
+  if (!newuser)
+    {
+      pthread_mutex_unlock (&global_lock);
+      return 0;
+    }
 
   auth = getauth ();
   newright = ports_get_send_right (newuser);