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-rw-r--r--sysdeps/mach/hurd/bits/posix_opt.h5
-rw-r--r--sysdeps/mach/hurd/mlock.c47
-rw-r--r--sysdeps/mach/hurd/munlock.c45
3 files changed, 96 insertions, 1 deletions
diff --git a/sysdeps/mach/hurd/bits/posix_opt.h b/sysdeps/mach/hurd/bits/posix_opt.h
index c6cdf530f3..02280002a2 100644
--- a/sysdeps/mach/hurd/bits/posix_opt.h
+++ b/sysdeps/mach/hurd/bits/posix_opt.h
@@ -1,5 +1,5 @@
/* Define POSIX options for GNU/Hurd.
- Copyright (C) 1998, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1998,2000,01 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
@@ -40,6 +40,9 @@
/* Mapping of files to memory is supported. */
#define _POSIX_MAPPED_FILES 1
+/* Locking of ranges of memory is supported. */
+#define _POSIX_MEMLOCK_RANGE 1
+
/* Setting of memory protections is supported. */
#define _POSIX_MEMORY_PROTECTION 1
diff --git a/sysdeps/mach/hurd/mlock.c b/sysdeps/mach/hurd/mlock.c
new file mode 100644
index 0000000000..e7086c1b68
--- /dev/null
+++ b/sysdeps/mach/hurd/mlock.c
@@ -0,0 +1,47 @@
+/* mlock -- guarantee pages are resident in memory. Mach/Hurd version.
+ Copyright (C) 2001 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <hurd.h>
+#include <mach/mach_host.h>
+
+/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to
+ be memory resident. */
+
+int
+mlock (const void *addr, size_t len)
+{
+ mach_port_t hostpriv;
+ vm_address_t page;
+ error_t err;
+
+ err = __get_privileged_ports (&hostpriv, NULL);
+ if (err)
+ return __hurd_fail (EPERM);
+
+ page = trunc_page ((vm_address_t) addr);
+ len = round_page ((vm_address_t) addr + len) - page;
+ err = __vm_wire (hostpriv, __mach_task_self (), page, len,
+ VM_PROT_ALL); /* XXX ? */
+ __mach_port_deallocate (__mach_task_self (), hostpriv);
+
+ return err ? __hurd_fail (err) : 0;
+}
diff --git a/sysdeps/mach/hurd/munlock.c b/sysdeps/mach/hurd/munlock.c
new file mode 100644
index 0000000000..a91f9f0986
--- /dev/null
+++ b/sysdeps/mach/hurd/munlock.c
@@ -0,0 +1,45 @@
+/* munlock -- undo the effects of prior mlock calls. Mach/Hurd version.
+ Copyright (C) 2001 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <hurd.h>
+#include <mach/mach_host.h>
+
+/* Undo the effects on these whole pages of any prior mlock calls. */
+
+int
+munlock (const void *addr, size_t len)
+{
+ mach_port_t hostpriv;
+ vm_address_t page;
+ error_t err;
+
+ err = __get_privileged_ports (&hostpriv, NULL);
+ if (err)
+ return __hurd_fail (EPERM);
+
+ page = trunc_page ((vm_address_t) addr);
+ len = round_page ((vm_address_t) addr + len) - page;
+ err = __vm_wire (hostpriv, __mach_task_self (), page, len, VM_PROT_NONE);
+ __mach_port_deallocate (__mach_task_self (), hostpriv);
+
+ return err ? __hurd_fail (err) : 0;
+}