1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Signal name/number conversion routines.
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4 | *
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5 | * Copyright 2006 Rob Landley <rob@landley.net>
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6 | *
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7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | #include "libbb.h"
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11 |
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12 | static const char signals[32][7] = {
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13 | // SUSv3 says kill must support these, and specifies the numerical values,
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14 | // http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html
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15 | // TODO: "[SIG]EXIT" shouldn't work for kill, right?
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16 | // {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"},
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17 | // {6, "ABRT"}, {9, "KILL"}, {14, "ALRM"}, {15, "TERM"}
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18 | // And Posix adds the following:
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19 | // {SIGILL, "ILL"}, {SIGTRAP, "TRAP"}, {SIGFPE, "FPE"}, {SIGUSR1, "USR1"},
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20 | // {SIGSEGV, "SEGV"}, {SIGUSR2, "USR2"}, {SIGPIPE, "PIPE"}, {SIGCHLD, "CHLD"},
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21 | // {SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"},
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22 | // {SIGTTOU, "TTOU"}
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23 | [0] = "EXIT",
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24 | #ifdef SIGHUP
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25 | [SIGHUP ] = "HUP",
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26 | #endif
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27 | #ifdef SIGINT
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28 | [SIGINT ] = "INT",
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29 | #endif
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30 | #ifdef SIGQUIT
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31 | [SIGQUIT ] = "QUIT",
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32 | #endif
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33 | #ifdef SIGILL
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34 | [SIGILL ] = "ILL",
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35 | #endif
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36 | #ifdef SIGTRAP
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37 | [SIGTRAP ] = "TRAP",
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38 | #endif
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39 | #ifdef SIGABRT
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40 | [SIGABRT ] = "ABRT",
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41 | #endif
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42 | #ifdef SIGBUS
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43 | [SIGBUS ] = "BUS",
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44 | #endif
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45 | #ifdef SIGFPE
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46 | [SIGFPE ] = "FPE",
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47 | #endif
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48 | #ifdef SIGKILL
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49 | [SIGKILL ] = "KILL",
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50 | #endif
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51 | #ifdef SIGUSR1
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52 | [SIGUSR1 ] = "USR1",
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53 | #endif
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54 | #ifdef SIGSEGV
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55 | [SIGSEGV ] = "SEGV",
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56 | #endif
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57 | #ifdef SIGUSR2
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58 | [SIGUSR2 ] = "USR2",
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59 | #endif
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60 | #ifdef SIGPIPE
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61 | [SIGPIPE ] = "PIPE",
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62 | #endif
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63 | #ifdef SIGALRM
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64 | [SIGALRM ] = "ALRM",
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65 | #endif
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66 | #ifdef SIGTERM
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67 | [SIGTERM ] = "TERM",
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68 | #endif
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69 | #ifdef SIGSTKFLT
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70 | [SIGSTKFLT] = "STKFLT",
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71 | #endif
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72 | #ifdef SIGCHLD
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73 | [SIGCHLD ] = "CHLD",
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74 | #endif
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75 | #ifdef SIGCONT
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76 | [SIGCONT ] = "CONT",
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77 | #endif
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78 | #ifdef SIGSTOP
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79 | [SIGSTOP ] = "STOP",
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80 | #endif
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81 | #ifdef SIGTSTP
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82 | [SIGTSTP ] = "TSTP",
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83 | #endif
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84 | #ifdef SIGTTIN
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85 | [SIGTTIN ] = "TTIN",
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86 | #endif
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87 | #ifdef SIGTTOU
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88 | [SIGTTOU ] = "TTOU",
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89 | #endif
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90 | #ifdef SIGURG
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91 | [SIGURG ] = "URG",
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92 | #endif
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93 | #ifdef SIGXCPU
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94 | [SIGXCPU ] = "XCPU",
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95 | #endif
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96 | #ifdef SIGXFSZ
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97 | [SIGXFSZ ] = "XFSZ",
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98 | #endif
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99 | #ifdef SIGVTALRM
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100 | [SIGVTALRM] = "VTALRM",
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101 | #endif
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102 | #ifdef SIGPROF
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103 | [SIGPROF ] = "PROF",
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104 | #endif
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105 | #ifdef SIGWINCH
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106 | [SIGWINCH ] = "WINCH",
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107 | #endif
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108 | #ifdef SIGPOLL
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109 | [SIGPOLL ] = "POLL",
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110 | #endif
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111 | #ifdef SIGPWR
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112 | [SIGPWR ] = "PWR",
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113 | #endif
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114 | #ifdef SIGSYS
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115 | [SIGSYS ] = "SYS",
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116 | #endif
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117 | };
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118 |
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119 | // Convert signal name to number.
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120 |
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121 | int get_signum(const char *name)
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122 | {
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123 | int i;
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124 |
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125 | i = bb_strtou(name, NULL, 10);
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126 | if (!errno)
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127 | return i;
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128 | if (strncasecmp(name, "SIG", 3) == 0)
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129 | name += 3;
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130 | for (i = 0; i < ARRAY_SIZE(signals); i++)
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131 | if (strcasecmp(name, signals[i]) == 0)
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132 | return i;
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133 |
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134 | #if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO))
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135 | /* These are aliased to other names */
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136 | if ((name[0] | 0x20) == 'i' && (name[1] | 0x20) == 'o') {
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137 | #ifdef SIGIO
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138 | if (!name[2])
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139 | return SIGIO;
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140 | #endif
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141 | #ifdef SIGIOT
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142 | if ((name[2] | 0x20) == 't' && !name[3])
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143 | return SIGIOT;
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144 | #endif
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145 | }
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146 | #endif
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147 |
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148 | return -1;
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149 | }
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150 |
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151 | // Convert signal number to name
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152 |
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153 | const char *get_signame(int number)
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154 | {
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155 | if ((unsigned)number < ARRAY_SIZE(signals)) {
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156 | if (signals[number][0]) /* if it's not an empty str */
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157 | return signals[number];
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158 | }
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159 |
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160 | return itoa(number);
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161 | }
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