[hurd,commited,4/5] hurd: Add mlockall support

Message ID 20180318194451.11862-5-samuel.thibault@ens-lyon.org
State New
Headers show
Series
  • hurd patches
Related show

Commit Message

Samuel Thibault March 18, 2018, 7:44 p.m.
* sysdeps/mach/hurd/mlockall.c: New file.
	* sysdeps/mach/hurd/munlockall.c: New file.
---
 ChangeLog                      |  2 ++
 sysdeps/mach/hurd/mlockall.c   | 42 ++++++++++++++++++++++++++++++++++++++++++
 sysdeps/mach/hurd/munlockall.c | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 84 insertions(+)
 create mode 100644 sysdeps/mach/hurd/mlockall.c
 create mode 100644 sysdeps/mach/hurd/munlockall.c

-- 
2.16.2

Patch

diff --git a/ChangeLog b/ChangeLog
index e090c75b74..1a34efca45 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -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>
 
diff --git a/sysdeps/mach/hurd/mlockall.c b/sysdeps/mach/hurd/mlockall.c
new file mode 100644
index 0000000000..6fa944b21f
--- /dev/null
+++ b/sysdeps/mach/hurd/mlockall.c
@@ -0,0 +1,42 @@ 
+/* 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;
+}
diff --git a/sysdeps/mach/hurd/munlockall.c b/sysdeps/mach/hurd/munlockall.c
new file mode 100644
index 0000000000..615b77f034
--- /dev/null
+++ b/sysdeps/mach/hurd/munlockall.c
@@ -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;
+}