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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2018-03-18 20:14:12 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2018-03-18 20:38:48 +0100
commit20bc801b3d4ba1eb1c9704a529b6720f096a14e5 (patch)
treef81059451d55a386bedaf5aacc8068da8acc1d2c
parentaa2189295e4e531d05733d60bfd697c7a962b100 (diff)
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hurd: Add mlockall support
* sysdeps/mach/hurd/mlockall.c: New file. * sysdeps/mach/hurd/munlockall.c: New file.
-rw-r--r--ChangeLog2
-rw-r--r--sysdeps/mach/hurd/mlockall.c42
-rw-r--r--sysdeps/mach/hurd/munlockall.c40
3 files changed, 84 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index e090c75b74f..1a34efca454 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 00000000000..6fa944b21f7
--- /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 00000000000..615b77f0349
--- /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;
+}