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hurd: Add mlockall support

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* sysdeps/mach/hurd/mlockall.c: New file.
	* sysdeps/mach/hurd/munlockall.c: New file.
This commit is contained in:
Samuel Thibault 2018-03-18 20:14:12 +01:00
parent aa2189295e
commit 20bc801b3d
3 changed files with 84 additions and 0 deletions
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@ -70,6 +70,8 @@
if flags contains O_DIRECTORY and the result is a directory.
* sysdeps/mach/hurd/i386/init-first.c (init): Also find ELF headers by
oneself when the pointer given in D is nul (as set by ext2fs).
* sysdeps/mach/hurd/mlockall.c: New file.
* sysdeps/mach/hurd/munlockall.c: New file.
2018-03-17 Samuel Thibault <samuel.thibault@ens-lyon.org>

42
sysdeps/mach/hurd/mlockall.c Normal file
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/* mlockall -- lock in core all the pages in this process. Hurd version.
Copyright (C) 2001-2018 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, see
<http://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <sys/mman.h>
#include <errno.h>
#include <hurd.h>
#include <mach/mach_host.h>
/* Cause all currently mapped pages of the process to be memory resident
until unlocked by a call to the `munlockall', until the process exits,
or until the process calls `execve'. */
int
mlockall (int flags)
{
mach_port_t host;
error_t err;
err = __get_privileged_ports (&host, NULL);
if (err)
return __hurd_fail (err);
err = __vm_wire_all (host, __mach_task_self (), flags);
__mach_port_deallocate (__mach_task_self (), host);
return err ? __hurd_fail (err) : 0;
}

40
sysdeps/mach/hurd/munlockall.c Normal file
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@ -0,0 +1,40 @@
/* munlockall -- undo the effects of all prior mlock calls. Hurd version.
Copyright (C) 2001-2018 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, see
<http://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <sys/mman.h>
#include <errno.h>
#include <hurd.h>
#include <mach/mach_host.h>
/* Undo the effects of all prior mlock calls in this process. */
int
munlockall (void)
{
mach_port_t host;
error_t err;
err = __get_privileged_ports (&host, NULL);
if (err)
return __hurd_fail (err);
err = __vm_wire_all (host, __mach_task_self (), VM_WIRE_NONE);
__mach_port_deallocate (__mach_task_self (), host);
return err ? __hurd_fail (err) : 0;
}