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/* Implementation of memory_object_init for pager library
Copyright (C) 1994 Free Software Foundation
This program 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.
This program 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* This is called by a kernel to initialize the memory object;
this routine is a dual of seqnos_memory_object_terminate. */
kern_return_t
_pager_seqnos_memory_object_init (mach_port_t object,
mach_port_seqno_t seqno,
mach_port_t control,
mach_port_t name,
vm_size_t pagesize)
{
struct pager *p;
if (!(p = check_port_type (object, pager_port_type)))
return EOPNOTSUPP;
mutex_lock (&p->interlock);
if (p->pager_state != NOTINIT)
{
printf ("pager dup init");
goto out;
}
if (pagesize != __vm_page_size)
{
printf ("incg init: bad page size");
goto out;
}
_pager_wait_for_seqno (p, seqno);
p->memobjcntl = control;
p->memobjname = name;
if (p->pagemap || p->pagemapsize)
panic ("pagemap failure");
/* Tell the kernel we're ready */
/* XXX Don't cache for now. */
memory_object_ready (control, 0, MEMORY_OBJECT_COPY_NONE);
p->pager_state = NORMAL;
_pager_release_seqno (p);
mutex_unlock (&p->interlock);
out:
done_with_port (p);
return 0;
}
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