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41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/* mlock -- guarantee pages are resident in memory. Mach/Hurd version.
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Copyright (C) 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <hurd.h>
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#include <mach/mach_host.h>
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/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to
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be memory resident. */
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int
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mlock (const void *addr, size_t len)
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{
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mach_port_t hostpriv;
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vm_address_t page;
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error_t err;
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err = __get_privileged_ports (&hostpriv, NULL);
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if (err)
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return __hurd_fail (EPERM);
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page = trunc_page ((vm_address_t) addr);
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len = round_page ((vm_address_t) addr + len) - page;
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err = __vm_wire (hostpriv, __mach_task_self (), page, len,
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VM_PROT_ALL); /* XXX ? */
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__mach_port_deallocate (__mach_task_self (), hostpriv);
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return err ? __hurd_fail (err) : 0;
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}
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