source: openpam/trunk/lib/liboath/oath_key_alloc.c @ 823

Last change on this file since 823 was 823, checked in by Dag-Erling Smørgrav, 6 years ago

Compare the return value from mmap() to MAP_FAILED, not NULL.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.5 KB
RevLine 
[623]1/*-
[799]2 * Copyright (c) 2013 The University of Oslo
[623]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 823 2014-10-16 13:44:34Z des $
30 */
31
32#ifdef HAVE_CONFIG_H
33# include "config.h"
34#endif
35
[689]36#include <sys/mman.h>
[626]37
[623]38#include <stdint.h>
[626]39#include <stdlib.h>
40#include <string.h>
[623]41
[626]42#include <security/pam_appl.h>
43#include <security/openpam.h>
[646]44#include <security/oath.h>
[623]45
[626]46/*
[689]47 * OATH
48 *
49 * Allocates an OATH key structure
[626]50 */
[689]51
[626]52struct oath_key *
[678]53oath_key_alloc(void)
[626]54{
55        struct oath_key *key;
[696]56        int prot, flags;
[623]57
[696]58        prot = PROT_READ|PROT_WRITE;
59        flags = MAP_ANON;
60#ifdef MAP_NOCORE
61        flags |= MAP_NOCORE;
62#endif
[823]63        if ((key = mmap(NULL, sizeof *key, prot, flags, -1, 0)) != MAP_FAILED) {
[678]64                memset(key, 0, sizeof *key);
[689]65                key->mapped = 1;
66                if (mlock(key, sizeof *key) == 0)
67                        key->locked = 1;
[626]68        } else {
[689]69                openpam_log(PAM_LOG_ERROR, "mmap(): %m");
70                if ((key = calloc(sizeof *key, 1)) == NULL)
71                        openpam_log(PAM_LOG_ERROR, "malloc(): %m");
[626]72        }
[643]73        return (key);
[626]74}
75
[689]76/**
77 * The =oath_key_alloc function allocates and initializes an OATH key
78 * structure.
79 *
80 * Keys allocated with =oath_key_alloc must be freed using =oath_key_free.
81 *
82 * >oath_key_free
83 *
84 * AUTHOR UIO
85 */
Note: See TracBrowser for help on using the repository browser.