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[hurd,commited 4/5] hurd: Add mlockall support
- From: Samuel Thibault <samuel dot thibault at ens-lyon dot org>
- To: libc-alpha at sourceware dot org
- Cc: Samuel Thibault <samuel dot thibault at ens-lyon dot org>
- Date: Sun, 18 Mar 2018 20:44:50 +0100
- Subject: [hurd,commited 4/5] hurd: Add mlockall support
- References: <20180318194451.11862-1-samuel.thibault@ens-lyon.org>
* 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
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;
+}
--
2.16.2