diff options
| -rw-r--r-- | libpager/object-create.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/libpager/object-create.c b/libpager/object-create.c new file mode 100644 index 00000000..89a76a96 --- /dev/null +++ b/libpager/object-create.c @@ -0,0 +1,72 @@ +/* Create a new memory object (Default pager only) + Copyright (C) 1994 Free Software Foundation, Inc. + Written by Michael I. Bushnell. + + 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +#include "priv.h" +#include "memory_object_create_S.h" + +/* Implement the object creation call as described in + <mach/memory_object_default.defs>. */ +kern_return_t +_pager_seqnos_memory_object_create (mach_port_t master, + mach_port_seqno_t seqno, + mach_port_t newobject, + vm_size_t objectsize, + mach_port_t newctl, + mach_port_t newname, + vm_size_t objectpagesize) +{ + struct port_info *masterpi; + struct pager *p; + + if (!pager_support_defpager) + return EOPNOTSUPP; + + if (objectpagesize != vm_page_size) + return EINVAL; + + masterpi = ports_check_port_type (object, pager_master_port_type); + if (!masterpi) + return EOPNOTSUPP; + + p = ports_intern_external_port (newobject, sizeof (struct pager), + pager_port_type); + + p->pager_state = NORMAL; + mutex_init (&p->interlock); + condition_init (&p->wakeup); + p->lock_requests = 0; + p->attribute_requests = 0; + p->may_cache = 0; + p->copy_strategy = MEMORY_OBJECT_COPY_DELAY; + p->memobjcntl = newctl; + p->memobjname = newname; + p->seqno = -1; + p->noterm = 0; + p->waitingforseqno = 0; + p->pagemap = 0; + p->pagemapsize = 0; + + p->upi = pager_create_upi (p); + + return 0; +} + + |