1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup rtems_bsd_rtems |
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5 | * |
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6 | * @brief TODO. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2013, 2016 embedded brains GmbH. All rights reserved. |
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11 | * |
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12 | * embedded brains GmbH |
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13 | * Dornierstr. 4 |
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14 | * 82178 Puchheim |
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15 | * Germany |
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16 | * <rtems@embedded-brains.de> |
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17 | * |
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18 | * Redistribution and use in source and binary forms, with or without |
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19 | * modification, are permitted provided that the following conditions |
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20 | * are met: |
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21 | * 1. Redistributions of source code must retain the above copyright |
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22 | * notice, this list of conditions and the following disclaimer. |
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23 | * 2. Redistributions in binary form must reproduce the above copyright |
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24 | * notice, this list of conditions and the following disclaimer in the |
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25 | * documentation and/or other materials provided with the distribution. |
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26 | * |
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27 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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37 | * SUCH DAMAGE. |
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38 | */ |
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39 | |
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40 | #include <machine/rtems-bsd-kernel-space.h> |
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41 | #include <machine/rtems-bsd-thread.h> |
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42 | |
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43 | #include <sys/types.h> |
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44 | #include <sys/kernel.h> |
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45 | #include <sys/lock.h> |
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46 | #include <sys/mutex.h> |
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47 | |
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48 | #undef printf |
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49 | #define RTEMS_BSD_PROGRAM_NO_STRDUP_WRAP |
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50 | #include <machine/rtems-bsd-program.h> |
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51 | |
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52 | struct rtems_bsd_program_control * |
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53 | rtems_bsd_program_get_control_or_null(void) |
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54 | { |
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55 | struct thread *td; |
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56 | |
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57 | td = rtems_bsd_get_curthread_or_null(); |
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58 | |
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59 | if (td != NULL) { |
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60 | return (td->td_prog_ctrl); |
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61 | } else { |
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62 | return (NULL); |
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63 | } |
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64 | } |
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65 | |
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66 | int |
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67 | rtems_bsd_program_set_control(struct rtems_bsd_program_control *prog_ctrl) |
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68 | { |
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69 | struct thread *td; |
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70 | int error; |
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71 | |
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72 | td = rtems_bsd_get_curthread_or_null(); |
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73 | |
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74 | if (td != NULL) { |
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75 | if (td->td_prog_ctrl == NULL) { |
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76 | error = 0; |
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77 | } else { |
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78 | error = EBUSY; |
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79 | } |
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80 | |
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81 | td->td_prog_ctrl = prog_ctrl; |
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82 | } else { |
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83 | error = ENOMEM; |
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84 | } |
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85 | |
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86 | return (error); |
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87 | } |
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88 | |
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89 | static struct mtx program_mtx; |
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90 | |
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91 | MTX_SYSINIT(rtems_bsd_program, &program_mtx, "BSD program", MTX_DEF); |
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92 | |
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93 | void |
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94 | rtems_bsd_program_lock(void) |
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95 | { |
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96 | mtx_lock(&program_mtx); |
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97 | } |
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98 | |
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99 | void |
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100 | rtems_bsd_program_unlock(void) |
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101 | { |
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102 | mtx_unlock(&program_mtx); |
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103 | } |
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