1 | /*- |
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2 | * Copyright (c) 2013 The University of Oslo |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * 3. The name of the author may not be used to endorse or promote |
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14 | * products derived from this software without specific prior written |
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15 | * permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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27 | * SUCH DAMAGE. |
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28 | * |
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29 | * $Id: oath_key_alloc.c 823 2014-10-16 13:44:34Z des $ |
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30 | */ |
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31 | |
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32 | #ifdef HAVE_CONFIG_H |
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33 | # include "config.h" |
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34 | #endif |
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35 | |
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36 | #include <sys/mman.h> |
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37 | |
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38 | #include <stdint.h> |
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39 | #include <stdlib.h> |
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40 | #include <string.h> |
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41 | |
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42 | #include <security/pam_appl.h> |
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43 | #include <security/openpam.h> |
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44 | #include <security/oath.h> |
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45 | |
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46 | /* |
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47 | * OATH |
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48 | * |
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49 | * Allocates an OATH key structure |
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50 | */ |
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51 | |
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52 | struct oath_key * |
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53 | oath_key_alloc(void) |
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54 | { |
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55 | struct oath_key *key; |
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56 | int prot, flags; |
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57 | |
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58 | prot = PROT_READ|PROT_WRITE; |
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59 | flags = MAP_ANON; |
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60 | #ifdef MAP_NOCORE |
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61 | flags |= MAP_NOCORE; |
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62 | #endif |
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63 | if ((key = mmap(NULL, sizeof *key, prot, flags, -1, 0)) != MAP_FAILED) { |
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64 | memset(key, 0, sizeof *key); |
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65 | key->mapped = 1; |
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66 | if (mlock(key, sizeof *key) == 0) |
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67 | key->locked = 1; |
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68 | } else { |
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69 | openpam_log(PAM_LOG_ERROR, "mmap(): %m"); |
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70 | if ((key = calloc(sizeof *key, 1)) == NULL) |
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71 | openpam_log(PAM_LOG_ERROR, "malloc(): %m"); |
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72 | } |
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73 | return (key); |
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74 | } |
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75 | |
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76 | /** |
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77 | * The =oath_key_alloc function allocates and initializes an OATH key |
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78 | * structure. |
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79 | * |
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80 | * Keys allocated with =oath_key_alloc must be freed using =oath_key_free. |
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81 | * |
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82 | * >oath_key_free |
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83 | * |
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84 | * AUTHOR UIO |
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85 | */ |
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