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/*
* (C) Copyright 2008-2010 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; version 2 of
* the License.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <digest.h>
#include <malloc.h>
#include <errno.h>
#include <module.h>
#include <linux/err.h>
static LIST_HEAD(digests);
static int dummy_init(struct digest *d)
{
return 0;
}
int digest_register(struct digest *d)
{
if (!d || !d->name || !d->update || !d->final || d->length < 1)
return -EINVAL;
if (!d->init)
d->init = dummy_init;
if (digest_get_by_name(d->name))
return -EEXIST;
list_add_tail(&d->list, &digests);
return 0;
}
EXPORT_SYMBOL(digest_register);
void digest_unregister(struct digest *d)
{
if (!d)
return;
list_del(&d->list);
}
EXPORT_SYMBOL(digest_unregister);
struct digest* digest_get_by_name(char* name)
{
struct digest* d;
if (!name)
return NULL;
list_for_each_entry(d, &digests, list) {
if(strcmp(d->name, name) == 0)
return d;
}
return NULL;
}
EXPORT_SYMBOL_GPL(digest_get_by_name);
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