?? mlock.c
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/* 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. */intmlock (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;}
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