cryb-to/lib/oath/oath_key_free.c
Dag-Erling Smørgrav ae99587ba4 initial code drop
2014-07-04 11:18:53 +00:00

77 lines
2.2 KiB
C

/*-
* Copyright (c) 2013 Universitetet i Oslo
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Author: Dag-Erling Smørgrav <des@des.no>
* Sponsor: the University of Oslo
*
* $Id$
*/
#include "cryb/impl.h"
#include <sys/mman.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <cryb/oath.h>
/*
* OATH
*
* Wipes and frees an OATH key structure
*/
void
oath_key_free(struct oath_key *key)
{
int mapped, locked;
if (key != NULL) {
mapped = key->mapped;
locked = key->locked;
memset(key, 0, sizeof *key);
if (mapped) {
if (locked)
munlock(key, sizeof *key);
munmap(key, sizeof *key);
} else {
free(key);
}
}
}
/**
* The =oath_key_free function wipes and frees an OATH key structure which
* was previously allocated using the =oath_key_alloc function.
*
* >oath_key_alloc
*
* AUTHOR UIO
*/