1  /* mlockall -- lock in core all the pages in this process.  Hurd version.
       2     Copyright (C) 2001-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <sys/types.h>
      20  #include <sys/mman.h>
      21  #include <errno.h>
      22  #include <hurd.h>
      23  #include <mach/mach_host.h>
      24  
      25  /* Cause all currently mapped pages of the process to be memory resident
      26     until unlocked by a call to the `munlockall', until the process exits,
      27     or until the process calls `execve'.  */
      28  
      29  int
      30  mlockall (int flags)
      31  {
      32    mach_port_t host;
      33    error_t err;
      34  
      35    err = __get_privileged_ports (&host, NULL);
      36    if (err)
      37      return __hurd_fail (err);
      38  
      39    err = __vm_wire_all (host, __mach_task_self (), flags);
      40    __mach_port_deallocate (__mach_task_self (), host);
      41    return err ? __hurd_fail (err) : 0;
      42  }