Import glibc-mainline for 2006-08-16

git-svn-id: svn://svn.eglibc.org/fsf/trunk@4 7b3dc134-2b1b-0410-93df-9e9f96275f8d

1 files changed, 47 insertions, 0 deletions

diff --git a/libc/sysdeps/mach/hurd/mlock.c b/libc/sysdeps/mach/hurd/mlock.c
new file mode 100644
index 000000000..bb96c9c07
--- /dev/null
+++ b/libc/sysdeps/mach/hurd/mlock.c
@@ -0,0 +1,47 @@
+/* mlock -- guarantee pages are resident in memory.  Mach/Hurd version.
+   Copyright (C) 2001 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/types.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <hurd.h>
+#include <mach/mach_host.h>
+
+/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to
+   be memory resident.  */
+
+int
+mlock (const void *addr, size_t len)
+{
+  mach_port_t hostpriv;
+  vm_address_t page;
+  error_t err;
+
+  err = __get_privileged_ports (&hostpriv, NULL);
+  if (err)
+    return __hurd_fail (EPERM);
+
+  page = trunc_page ((vm_address_t) addr);
+  len = round_page ((vm_address_t) addr + len) - page;
+  err = __vm_wire (hostpriv, __mach_task_self (), page, len,
+		   VM_PROT_ALL); /* XXX ? */
+  __mach_port_deallocate (__mach_task_self (), hostpriv);
+
+  return err ? __hurd_fail (err) : 0;
+}