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/* Store allocation/deallocation
Copyright (C) 1995, 1996 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <malloc.h>
#include "store.h"
/* Allocate a new store structure of class CLASS, with meths METHS, and the
various other fields initialized to the given parameters. */
struct store *
_make_store (enum file_storage_class class, struct store_meths *meths,
mach_port_t port, size_t block_size,
off_t *runs, size_t runs_len, off_t end)
{
if (block_size & (block_size - 1))
return 0; /* block size not a power of two. */
else
{
struct store *store = malloc (sizeof (struct store));
if (store)
{
store->name = 0;
store->port = port;
store->runs = 0;
store->runs_len = 0;
store->wrap = 0;
store->end = end;
store->block_size = block_size;
store->source = MACH_PORT_NULL;
store->blocks = 0;
store->size = 0;
store->log2_block_size = 0;
store->log2_blocks_per_page = 0;
store->misc = 0;
store->hook = 0;
store->class = class;
store->meths = meths;
store_set_runs (store, runs, runs_len); /* Calls _store_derive() */
}
return store;
}
}
void
store_free (struct store *store)
{
if (store->meths->cleanup)
(*store->meths->cleanup) (store);
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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