1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /** |
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4 | * @file |
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5 | * |
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6 | * @brief POSIX Signals Manager Initialization |
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7 | * @ingroup POSIX_SIGNALS |
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8 | */ |
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9 | |
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10 | /* |
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11 | * COPYRIGHT (c) 1989-2008. |
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12 | * On-Line Applications Research Corporation (OAR). |
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13 | * |
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14 | * Redistribution and use in source and binary forms, with or without |
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15 | * modification, are permitted provided that the following conditions |
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16 | * are met: |
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17 | * 1. Redistributions of source code must retain the above copyright |
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18 | * notice, this list of conditions and the following disclaimer. |
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19 | * 2. Redistributions in binary form must reproduce the above copyright |
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20 | * notice, this list of conditions and the following disclaimer in the |
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21 | * documentation and/or other materials provided with the distribution. |
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22 | * |
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23 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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24 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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27 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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30 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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31 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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32 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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33 | * POSSIBILITY OF SUCH DAMAGE. |
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34 | */ |
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35 | |
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36 | #ifdef HAVE_CONFIG_H |
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37 | #include "config.h" |
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38 | #endif |
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39 | |
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40 | #include <errno.h> |
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41 | #include <signal.h> |
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42 | #include <string.h> |
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43 | #include <stdlib.h> |
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44 | |
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45 | #include <rtems/score/isrlevel.h> |
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46 | #include <rtems/score/threadimpl.h> |
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47 | #include <rtems/score/threadqimpl.h> |
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48 | #include <rtems/score/watchdogimpl.h> |
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49 | #include <rtems/posix/threadsup.h> |
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50 | #include <rtems/posix/psignalimpl.h> |
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51 | #include <rtems/posix/pthreadimpl.h> |
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52 | #include <rtems/config.h> |
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53 | #include <rtems/sysinit.h> |
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54 | |
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55 | /* |
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56 | * Ensure we have the same number of vectors and default vector entries |
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57 | */ |
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58 | RTEMS_STATIC_ASSERT( |
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59 | sizeof( _POSIX_signals_Vectors ) == sizeof( _POSIX_signals_Default_vectors ), |
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60 | posix_signals_vectors |
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61 | ); |
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62 | |
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63 | /*** PROCESS WIDE STUFF ****/ |
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64 | |
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65 | sigset_t _POSIX_signals_Pending; |
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66 | |
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67 | void _POSIX_signals_Abnormal_termination_handler( |
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68 | int signo RTEMS_UNUSED ) |
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69 | { |
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70 | exit( 1 ); |
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71 | } |
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72 | |
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73 | #define SIG_ARRAY_MAX (SIGRTMAX + 1) |
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74 | const struct sigaction _POSIX_signals_Default_vectors[ SIG_ARRAY_MAX ] = { |
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75 | /* NO SIGNAL 0 */ SIGACTION_IGNORE, |
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76 | /* SIGHUP 1 */ SIGACTION_TERMINATE, |
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77 | /* SIGINT 2 */ SIGACTION_TERMINATE, |
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78 | /* SIGQUIT 3 */ SIGACTION_TERMINATE, |
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79 | /* SIGILL 4 */ SIGACTION_TERMINATE, |
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80 | /* SIGTRAP 5 */ SIGACTION_TERMINATE, |
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81 | /* SIGIOT 6 */ SIGACTION_TERMINATE, |
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82 | /* SIGABRT 6 SIGACTION_TERMINATE, -- alias for SIGIOT */ |
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83 | /* SIGEMT 7 */ SIGACTION_TERMINATE, |
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84 | /* SIGFPE 8 */ SIGACTION_TERMINATE, |
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85 | /* SIGKILL 9 */ SIGACTION_TERMINATE, |
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86 | /* SIGBUS 10 */ SIGACTION_TERMINATE, |
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87 | /* SIGSEGV 11 */ SIGACTION_TERMINATE, |
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88 | /* SIGSYS 12 */ SIGACTION_TERMINATE, |
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89 | /* SIGPIPE 13 */ SIGACTION_TERMINATE, |
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90 | /* SIGALRM 14 */ SIGACTION_TERMINATE, |
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91 | /* SIGTERM 15 */ SIGACTION_TERMINATE, |
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92 | /* SIGURG 16 */ SIGACTION_TERMINATE, |
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93 | /* SIGSTOP 17 */ SIGACTION_TERMINATE, |
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94 | /* SIGTSTP 18 */ SIGACTION_TERMINATE, |
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95 | /* SIGCONT 19 */ SIGACTION_TERMINATE, |
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96 | /* SIGCHLD 20 */ SIGACTION_TERMINATE, |
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97 | /* SIGTTIN 21 */ SIGACTION_TERMINATE, |
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98 | /* SIGTTOU 22 */ SIGACTION_TERMINATE, |
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99 | /* SIGIO 23 */ SIGACTION_TERMINATE, |
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100 | /* SIGWINCH 24 */ SIGACTION_TERMINATE, |
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101 | /* SIGUSR1 25 */ SIGACTION_TERMINATE, |
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102 | /* SIGUSR2 26 */ SIGACTION_TERMINATE, |
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103 | /* SIGRT 27 */ SIGACTION_TERMINATE, |
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104 | /* SIGRT 28 */ SIGACTION_TERMINATE, |
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105 | /* SIGRT 29 */ SIGACTION_TERMINATE, |
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106 | /* SIGRT 30 */ SIGACTION_TERMINATE, |
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107 | /* SIGRTMAX 31 */ SIGACTION_TERMINATE |
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108 | }; |
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109 | |
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110 | struct sigaction _POSIX_signals_Vectors[ SIG_ARRAY_MAX ]; |
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111 | |
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112 | Thread_queue_Control _POSIX_signals_Wait_queue = |
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113 | THREAD_QUEUE_INITIALIZER( "POSIX Signals" ); |
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114 | |
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115 | Chain_Control _POSIX_signals_Inactive_siginfo; |
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116 | Chain_Control _POSIX_signals_Siginfo[ SIG_ARRAY_MAX ]; |
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117 | |
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118 | static void _POSIX_signals_Manager_Initialization(void) |
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119 | { |
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120 | uint32_t signo; |
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121 | |
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122 | memcpy( |
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123 | _POSIX_signals_Vectors, |
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124 | _POSIX_signals_Default_vectors, |
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125 | sizeof( _POSIX_signals_Vectors ) |
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126 | ); |
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127 | |
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128 | /* |
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129 | * Initialize the set of pending signals for the entire process |
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130 | */ |
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131 | sigemptyset( &_POSIX_signals_Pending ); |
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132 | |
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133 | /* XXX status codes */ |
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134 | |
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135 | /* |
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136 | * Allocate the siginfo pools. |
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137 | */ |
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138 | for ( signo=1 ; signo<= SIGRTMAX ; signo++ ) { |
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139 | _Chain_Initialize_empty( &_POSIX_signals_Siginfo[ signo ] ); |
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140 | } |
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141 | |
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142 | _Chain_Initialize( |
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143 | &_POSIX_signals_Inactive_siginfo, |
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144 | &_POSIX_signals_Siginfo_nodes[ 0 ], |
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145 | _POSIX_signals_Maximum_queued_signals, |
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146 | sizeof( _POSIX_signals_Siginfo_nodes[ 0 ] ) |
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147 | ); |
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148 | } |
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149 | |
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150 | RTEMS_SYSINIT_ITEM( |
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151 | _POSIX_signals_Manager_Initialization, |
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152 | RTEMS_SYSINIT_POSIX_SIGNALS, |
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153 | RTEMS_SYSINIT_ORDER_MIDDLE |
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154 | ); |
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