Update ntp_gettime for Linux.

The ntp_gettime implementation of NTP exports the tai field the kernel
now produces.  This requires an ABI change since the ntptimeval structure
changed.  Upstream kept the same name, there is nothing to do.  This
patch changes the ntptimeval structure but keeps the old ntp_gettime
definition.  A new ntp_gettimex function which is transparently invoked
through the old name is introduced.  This has the advantage that even
object files can remain compatible.  This wouldn't be the case if
symbol versioning would be used to overload the name ntp_gettime.

1 files changed, 46 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/ntp_gettimex.c b/sysdeps/unix/sysv/linux/ntp_gettimex.c
new file mode 100644
index 0000000000..ed7851b6fd
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/ntp_gettimex.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1999, 2002, 2009 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sys/timex.h>
+
+#ifndef MOD_OFFSET
+# define modes mode
+#endif
+
+
+extern int INTUSE(__adjtimex) (struct timex *__ntx);
+
+
+int
+ntp_gettimex (struct ntptimeval *ntv)
+{
+  struct timex tntx;
+  int result;
+
+  tntx.modes = 0;
+  result = INTUSE(__adjtimex) (&tntx);
+  ntv->time = tntx.time;
+  ntv->maxerror = tntx.maxerror;
+  ntv->esterror = tntx.esterror;
+  ntv->tai = tntx.tai;
+  ntv->__unused1 = 0;
+  ntv->__unused2 = 0;
+  ntv->__unused3 = 0;
+  ntv->__unused4 = 0;
+  return result;
+}