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) 2014, 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 | |
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42 | #include <sys/types.h> |
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43 | #include <sys/lock.h> |
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44 | #include <sys/reent.h> |
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45 | #include <sys/systm.h> |
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46 | #include <sys/syslog.h> |
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47 | |
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48 | #include <stdio.h> |
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49 | |
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50 | #include <rtems/bsd/bsd.h> |
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51 | |
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52 | #define VPRINTF_LOCK() _Mutex_Acquire(&vprintf_mtx) |
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53 | #define VPRINTF_UNLOCK() _Mutex_Release(&vprintf_mtx) |
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54 | |
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55 | static const char * const log_priorities[] = { |
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56 | [LOG_EMERG] = "emerg", |
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57 | [LOG_ALERT] = "alert", |
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58 | [LOG_CRIT] = "crit", |
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59 | [LOG_ERR] = "err", |
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60 | [LOG_WARNING] = "warning", |
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61 | [LOG_NOTICE] = "notice", |
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62 | [LOG_INFO] = "info", |
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63 | [LOG_DEBUG] = "debug" |
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64 | }; |
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65 | |
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66 | /* Use a <sys/lock.h> mutex due to the static initialization capability */ |
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67 | static struct _Mutex_Control vprintf_mtx = _MUTEX_INITIALIZER; |
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68 | |
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69 | static void |
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70 | default_putchar(int c) |
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71 | { |
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72 | |
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73 | /* |
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74 | * Output to the global stdout FILE object and not to the thread-local |
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75 | * stdout FILE object. |
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76 | */ |
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77 | fputc(c, &__sf[1]); |
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78 | } |
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79 | |
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80 | static void |
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81 | kvprintf_putchar(int c, void *arg) |
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82 | { |
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83 | int *last; |
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84 | |
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85 | last = arg; |
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86 | *last = c; |
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87 | default_putchar(c); |
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88 | } |
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89 | |
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90 | static int |
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91 | default_vprintf_handler(int level, const char *fmt, va_list ap) |
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92 | { |
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93 | int n; |
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94 | int last; |
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95 | |
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96 | VPRINTF_LOCK(); |
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97 | |
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98 | if (level != LOG_PRINTF) { |
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99 | const char *p; |
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100 | |
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101 | p = log_priorities[LOG_PRI(level)]; |
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102 | |
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103 | while (*p != '\0') { |
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104 | default_putchar(*p); |
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105 | ++p; |
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106 | } |
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107 | |
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108 | default_putchar(':'); |
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109 | default_putchar(' '); |
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110 | } |
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111 | |
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112 | last = -1; |
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113 | n = kvprintf(fmt, kvprintf_putchar, &last, 10, ap); |
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114 | |
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115 | if (level != LOG_PRINTF && last != '\n') { |
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116 | default_putchar('\n'); |
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117 | } |
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118 | |
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119 | VPRINTF_UNLOCK(); |
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120 | return (n); |
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121 | } |
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122 | |
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123 | static int (*vprintf_handler)(int, const char *, va_list) = |
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124 | default_vprintf_handler; |
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125 | |
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126 | int |
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127 | rtems_bsd_vprintf_handler_mute(int level, const char *fmt, va_list ap) |
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128 | { |
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129 | (void) level; |
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130 | (void) fmt; |
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131 | (void) ap; |
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132 | |
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133 | return 0; |
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134 | } |
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135 | |
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136 | rtems_bsd_vprintf_handler |
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137 | rtems_bsd_set_vprintf_handler(rtems_bsd_vprintf_handler new_handler) |
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138 | { |
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139 | rtems_bsd_vprintf_handler old_handler; |
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140 | |
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141 | VPRINTF_LOCK(); |
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142 | old_handler = vprintf_handler; |
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143 | vprintf_handler = new_handler; |
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144 | VPRINTF_UNLOCK(); |
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145 | return (old_handler); |
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146 | } |
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147 | |
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148 | int |
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149 | rtems_bsd_vprintf(int level, const char *fmt, va_list ap) |
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150 | { |
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151 | |
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152 | return ((*vprintf_handler)(level, fmt, ap)); |
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153 | } |
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