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