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/* Store allocation/deallocation
Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
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 <malloc.h>
#include "store.h"
/* Allocate a new store structure with meths METHS, and the various other
fields initialized to the given parameters. */
error_t
_store_create (const struct store_class *class,
mach_port_t port, int flags, size_t block_size,
const struct store_run *runs, size_t num_runs, off_t end,
struct store **store)
{
if ((block_size & (block_size - 1)) || (block_size == 0 && num_runs > 0))
return EINVAL; /* block size not a power of two. */
else
{
struct store *new = malloc (sizeof (struct store));
if (new)
{
error_t err;
new->name = 0;
new->port = port;
new->runs = 0;
new->num_runs = 0;
new->wrap_src = 0;
new->wrap_dst = 0;
new->flags = flags;
new->end = end;
new->block_size = block_size;
new->source = MACH_PORT_NULL;
new->blocks = 0;
new->size = 0;
new->log2_block_size = 0;
new->log2_blocks_per_page = 0;
new->misc = 0;
new->hook = 0;
new->children = 0;
new->num_children = 0;
new->class = class;
/* store_set_runs calls _store_derive to derive other fields. */
err = store_set_runs (new, runs, num_runs);
if (err)
free (new);
else
*store = new;
return err;
}
else
return ENOMEM;
}
}
void
store_free (struct store *store)
{
int k;
if (store->class->cleanup)
(*store->class->cleanup) (store);
for (k = 0; k < store->num_children; k++)
store_free (store->children[k]);
if (store->port != MACH_PORT_NULL)
mach_port_deallocate (mach_task_self (), store->port);
if (store->source != MACH_PORT_NULL)
mach_port_deallocate (mach_task_self (), store->source);
if (store->name)
free (store->name);
if (store->runs)
free (store->runs);
free (store);
}
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