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/*
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;
}
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