source: openpam/trunk/lib/liboath/oath_key_alloc.c @ 689

Last change on this file since 689 was 689, checked in by Dag-Erling Smørgrav, 8 years ago

Factor out oath_key_{alloc,free}() and implement wiring / locking.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.4 KB
Line 
1/*-
2 * Copyright (c) 2013 Universitetet i Oslo
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote
14 *    products derived from this software without specific prior written
15 *    permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $Id: oath_key_alloc.c 689 2013-07-12 10:47:14Z des $
30 */
31
32#ifdef HAVE_CONFIG_H
33# include "config.h"
34#endif
35
36#include <sys/mman.h>
37
38#include <stdint.h>
39#include <stdlib.h>
40#include <string.h>
41
42#include <security/pam_appl.h>
43#include <security/openpam.h>
44#include <security/oath.h>
45
46/*
47 * OATH
48 *
49 * Allocates an OATH key structure
50 */
51
52struct oath_key *
53oath_key_alloc(void)
54{
55        struct oath_key *key;
56
57        if ((key = mmap(NULL, sizeof *key, PROT_READ|PROT_WRITE,
58            MAP_ANON|MAP_NOCORE, -1, 0)) == NULL) {
59                memset(key, 0, sizeof *key);
60                key->mapped = 1;
61                if (mlock(key, sizeof *key) == 0)
62                        key->locked = 1;
63        } else {
64                openpam_log(PAM_LOG_ERROR, "mmap(): %m");
65                if ((key = calloc(sizeof *key, 1)) == NULL)
66                        openpam_log(PAM_LOG_ERROR, "malloc(): %m");
67        }
68        return (key);
69}
70
71/**
72 * The =oath_key_alloc function allocates and initializes an OATH key
73 * structure.
74 *
75 * Keys allocated with =oath_key_alloc must be freed using =oath_key_free.
76 *
77 * >oath_key_free
78 *
79 * AUTHOR UIO
80 */
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