Initial revision

1 files changed, 51 insertions, 0 deletions

diff --git a/libmom/allocate-memory.c b/libmom/allocate-memory.c
new file mode 100644
index 00000000..d98632bc
--- /dev/null
+++ b/libmom/allocate-memory.c
@@ -0,0 +1,51 @@
+/* 
+   Copyright (C) 1996 Free Software Foundation, Inc.
+   Written by Michael I. Bushnell, p/BSG.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#include "priv.h"
+
+error_t
+mom_allocate_memory (void **start, size_t len, int readonly,
+		      struct mom_port_ref *obj, size_t offset,
+		      int copy)
+{
+  error_t err;
+  mach_port_t port;
+
+  assert (len % vm_page_size == 0);
+  if (obj)
+    {
+      port = mom_fetch_mach_port (obj);
+      assert (offset % vm_page_size == 0);
+    }
+  else
+    port = MACH_PORT_NULL;
+
+  *start = 0;
+  
+  mutex_lock (&_mom_memory_lock);
+  err = vm_map (mach_task_self (), (vm_address_t *)start, len, 0, 0,
+		port, (obj ? offset : 0), (obj ? copy : 0),
+		(VM_PROT_READ | VM_PROT_EXECUTE 
+		 | (!readonly ? VM_PROT_WRITE : 0)),
+		VM_PROT_READ | VM_PROT_EXECUTE | VM_PROT_WRITE,
+		VM_INHERIT_COPY);
+  mutex_unlock (&_mom_memory_lock);
+  return err;
+}