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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/mach/hurd/adjtime.c
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initial import
Diffstat (limited to 'sysdeps/mach/hurd/adjtime.c')
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diff --git a/sysdeps/mach/hurd/adjtime.c b/sysdeps/mach/hurd/adjtime.c
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+/* Copyright (C) 1991, 1993, 1995 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <hurd.h>
+
+/* Adjust the current time of day by the amount in DELTA.
+   If OLDDELTA is not NULL, it is filled in with the amount
+   of time adjustment remaining to be done from the last `__adjtime' call.
+   This call is restricted to the super-user.  */
+int
+DEFUN(__adjtime, (delta, olddelta),
+      CONST struct timeval *delta AND
+      struct timeval *olddelta)
+{
+  error_t err;
+  mach_port_t hostpriv, devmaster;
+
+  if (err = __USEPORT (PROC, __proc_getprivports (port,
+						  &hostpriv, &devmaster)))
+    return __hurd_fail (err);
+  __mach_port_deallocate (__mach_task_self (), devmaster);
+
+  err = __host_adjust_time (hostpriv,
+			    /* `time_value_t' and `struct timeval' are in
+                               fact identical with the names changed.  */
+			    *(time_value_t *) delta,
+			    (time_value_t *) olddelta);
+  __mach_port_deallocate (__mach_task_self (), hostpriv);
+
+  if (err)
+    return __hurd_fail (err);
+  return 0;
+}
+
+weak_alias (__adjtime, adjtime)