1 | /* vi: set sw=4 ts=4: */
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2 | /* stty -- change and print terminal line settings
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3 | Copyright (C) 1990-1999 Free Software Foundation, Inc.
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4 |
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5 | Licensed under GPLv2 or later, see file LICENSE in this source tree.
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6 | */
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7 | /* Usage: stty [-ag] [-F device] [setting...]
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8 |
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9 | Options:
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10 | -a Write all current settings to stdout in human-readable form.
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11 | -g Write all current settings to stdout in stty-readable form.
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12 | -F Open and use the specified device instead of stdin
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13 |
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14 | If no args are given, write to stdout the baud rate and settings that
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15 | have been changed from their defaults. Mode reading and changes
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16 | are done on the specified device, or stdin if none was specified.
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17 |
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18 | David MacKenzie <djm@gnu.ai.mit.edu>
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19 |
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20 | Special for busybox ported by Vladimir Oleynik <dzo@simtreas.ru> 2001
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21 |
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22 | */
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23 |
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24 | //usage:#define stty_trivial_usage
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25 | //usage: "[-a|g] [-F DEVICE] [SETTING]..."
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26 | //usage:#define stty_full_usage "\n\n"
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27 | //usage: "Without arguments, prints baud rate, line discipline,\n"
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28 | //usage: "and deviations from stty sane\n"
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29 | //usage: "\n -F DEVICE Open device instead of stdin"
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30 | //usage: "\n -a Print all current settings in human-readable form"
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31 | //usage: "\n -g Print in stty-readable form"
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32 | //usage: "\n [SETTING] See manpage"
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33 |
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34 | #include "libbb.h"
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35 |
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36 | #ifndef _POSIX_VDISABLE
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37 | # define _POSIX_VDISABLE ((unsigned char) 0)
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38 | #endif
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39 |
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40 | #define Control(c) ((c) & 0x1f)
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41 | /* Canonical values for control characters */
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42 | #ifndef CINTR
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43 | # define CINTR Control('c')
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44 | #endif
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45 | #ifndef CQUIT
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46 | # define CQUIT 28
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47 | #endif
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48 | #ifndef CERASE
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49 | # define CERASE 127
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50 | #endif
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51 | #ifndef CKILL
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52 | # define CKILL Control('u')
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53 | #endif
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54 | #ifndef CEOF
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55 | # define CEOF Control('d')
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56 | #endif
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57 | #ifndef CEOL
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58 | # define CEOL _POSIX_VDISABLE
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59 | #endif
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60 | #ifndef CSTART
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61 | # define CSTART Control('q')
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62 | #endif
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63 | #ifndef CSTOP
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64 | # define CSTOP Control('s')
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65 | #endif
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66 | #ifndef CSUSP
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67 | # define CSUSP Control('z')
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68 | #endif
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69 | #if defined(VEOL2) && !defined(CEOL2)
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70 | # define CEOL2 _POSIX_VDISABLE
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71 | #endif
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72 | /* glibc-2.12.1 uses only VSWTC name */
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73 | #if defined(VSWTC) && !defined(VSWTCH)
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74 | # define VSWTCH VSWTC
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75 | #endif
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76 | /* ISC renamed swtch to susp for termios, but we'll accept either name */
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77 | #if defined(VSUSP) && !defined(VSWTCH)
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78 | # define VSWTCH VSUSP
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79 | # define CSWTCH CSUSP
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80 | #endif
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81 | #if defined(VSWTCH) && !defined(CSWTCH)
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82 | # define CSWTCH _POSIX_VDISABLE
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83 | #endif
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84 |
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85 | /* SunOS 5.3 loses (^Z doesn't work) if 'swtch' is the same as 'susp'.
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86 | So the default is to disable 'swtch.' */
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87 | #if defined(__sparc__) && defined(__svr4__)
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88 | # undef CSWTCH
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89 | # define CSWTCH _POSIX_VDISABLE
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90 | #endif
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91 |
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92 | #if defined(VWERSE) && !defined(VWERASE) /* AIX-3.2.5 */
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93 | # define VWERASE VWERSE
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94 | #endif
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95 | #if defined(VDSUSP) && !defined(CDSUSP)
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96 | # define CDSUSP Control('y')
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97 | #endif
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98 | #if !defined(VREPRINT) && defined(VRPRNT) /* Irix 4.0.5 */
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99 | # define VREPRINT VRPRNT
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100 | #endif
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101 | #if defined(VREPRINT) && !defined(CRPRNT)
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102 | # define CRPRNT Control('r')
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103 | #endif
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104 | #if defined(VWERASE) && !defined(CWERASE)
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105 | # define CWERASE Control('w')
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106 | #endif
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107 | #if defined(VLNEXT) && !defined(CLNEXT)
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108 | # define CLNEXT Control('v')
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109 | #endif
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110 | #if defined(VDISCARD) && !defined(VFLUSHO)
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111 | # define VFLUSHO VDISCARD
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112 | #endif
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113 | #if defined(VFLUSH) && !defined(VFLUSHO) /* Ultrix 4.2 */
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114 | # define VFLUSHO VFLUSH
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115 | #endif
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116 | #if defined(CTLECH) && !defined(ECHOCTL) /* Ultrix 4.3 */
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117 | # define ECHOCTL CTLECH
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118 | #endif
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119 | #if defined(TCTLECH) && !defined(ECHOCTL) /* Ultrix 4.2 */
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120 | # define ECHOCTL TCTLECH
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121 | #endif
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122 | #if defined(CRTKIL) && !defined(ECHOKE) /* Ultrix 4.2 and 4.3 */
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123 | # define ECHOKE CRTKIL
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124 | #endif
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125 | #if defined(VFLUSHO) && !defined(CFLUSHO)
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126 | # define CFLUSHO Control('o')
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127 | #endif
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128 | #if defined(VSTATUS) && !defined(CSTATUS)
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129 | # define CSTATUS Control('t')
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130 | #endif
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131 |
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132 | /* Save us from #ifdef forest plague */
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133 | #ifndef BSDLY
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134 | # define BSDLY 0
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135 | #endif
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136 | #ifndef CIBAUD
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137 | # define CIBAUD 0
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138 | #endif
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139 | #ifndef CRDLY
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140 | # define CRDLY 0
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141 | #endif
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142 | #ifndef CRTSCTS
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143 | # define CRTSCTS 0
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144 | #endif
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145 | #ifndef ECHOCTL
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146 | # define ECHOCTL 0
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147 | #endif
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148 | #ifndef ECHOKE
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149 | # define ECHOKE 0
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150 | #endif
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151 | #ifndef ECHOPRT
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152 | # define ECHOPRT 0
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153 | #endif
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154 | #ifndef FFDLY
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155 | # define FFDLY 0
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156 | #endif
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157 | #ifndef IEXTEN
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158 | # define IEXTEN 0
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159 | #endif
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160 | #ifndef IMAXBEL
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161 | # define IMAXBEL 0
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162 | #endif
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163 | #ifndef IUCLC
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164 | # define IUCLC 0
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165 | #endif
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166 | #ifndef IXANY
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167 | # define IXANY 0
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168 | #endif
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169 | #ifndef NLDLY
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170 | # define NLDLY 0
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171 | #endif
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172 | #ifndef OCRNL
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173 | # define OCRNL 0
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174 | #endif
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175 | #ifndef OFDEL
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176 | # define OFDEL 0
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177 | #endif
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178 | #ifndef OFILL
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179 | # define OFILL 0
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180 | #endif
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181 | #ifndef OLCUC
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182 | # define OLCUC 0
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183 | #endif
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184 | #ifndef ONLCR
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185 | # define ONLCR 0
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186 | #endif
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187 | #ifndef ONLRET
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188 | # define ONLRET 0
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189 | #endif
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190 | #ifndef ONOCR
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191 | # define ONOCR 0
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192 | #endif
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193 | #ifndef OXTABS
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194 | # define OXTABS 0
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195 | #endif
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196 | #ifndef TABDLY
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197 | # define TABDLY 0
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198 | #endif
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199 | #ifndef TAB1
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200 | # define TAB1 0
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201 | #endif
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202 | #ifndef TAB2
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203 | # define TAB2 0
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204 | #endif
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205 | #ifndef TOSTOP
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206 | # define TOSTOP 0
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207 | #endif
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208 | #ifndef VDSUSP
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209 | # define VDSUSP 0
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210 | #endif
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211 | #ifndef VEOL2
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212 | # define VEOL2 0
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213 | #endif
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214 | #ifndef VFLUSHO
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215 | # define VFLUSHO 0
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216 | #endif
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217 | #ifndef VLNEXT
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218 | # define VLNEXT 0
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219 | #endif
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220 | #ifndef VREPRINT
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221 | # define VREPRINT 0
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222 | #endif
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223 | #ifndef VSTATUS
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224 | # define VSTATUS 0
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225 | #endif
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226 | #ifndef VSWTCH
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227 | # define VSWTCH 0
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228 | #endif
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229 | #ifndef VTDLY
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230 | # define VTDLY 0
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231 | #endif
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232 | #ifndef VWERASE
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233 | # define VWERASE 0
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234 | #endif
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235 | #ifndef XCASE
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236 | # define XCASE 0
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237 | #endif
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238 | #ifndef IUTF8
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239 | # define IUTF8 0
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240 | #endif
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241 |
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242 | /* Which speeds to set */
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243 | enum speed_setting {
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244 | input_speed, output_speed, both_speeds
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245 | };
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246 |
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247 | /* Which member(s) of 'struct termios' a mode uses */
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248 | enum {
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249 | /* Do NOT change the order or values, as mode_type_flag()
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250 | * depends on them */
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251 | control, input, output, local, combination
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252 | };
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253 |
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254 | /* Flags for 'struct mode_info' */
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255 | #define SANE_SET 1 /* Set in 'sane' mode */
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256 | #define SANE_UNSET 2 /* Unset in 'sane' mode */
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257 | #define REV 4 /* Can be turned off by prepending '-' */
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258 | #define OMIT 8 /* Don't display value */
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259 |
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260 |
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261 | /* Each mode.
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262 | * This structure should be kept as small as humanly possible.
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263 | */
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264 | struct mode_info {
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265 | const uint8_t type; /* Which structure element to change */
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266 | const uint8_t flags; /* Setting and display options */
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267 | /* only these values are ever used, so... */
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268 | #if (CSIZE | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY) < 0x100
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269 | const uint8_t mask;
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270 | #elif (CSIZE | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY) < 0x10000
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271 | const uint16_t mask;
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272 | #else
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273 | const tcflag_t mask; /* Other bits to turn off for this mode */
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274 | #endif
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275 | /* was using short here, but ppc32 was unhappy */
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276 | const tcflag_t bits; /* Bits to set for this mode */
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277 | };
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278 |
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279 | enum {
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280 | /* Must match mode_name[] and mode_info[] order! */
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281 | IDX_evenp = 0,
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282 | IDX_parity,
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283 | IDX_oddp,
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284 | IDX_nl,
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285 | IDX_ek,
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286 | IDX_sane,
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287 | IDX_cooked,
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288 | IDX_raw,
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289 | IDX_pass8,
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290 | IDX_litout,
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291 | IDX_cbreak,
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292 | IDX_crt,
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293 | IDX_dec,
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294 | #if IXANY
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295 | IDX_decctlq,
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296 | #endif
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297 | #if TABDLY || OXTABS
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298 | IDX_tabs,
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299 | #endif
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300 | #if XCASE && IUCLC && OLCUC
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301 | IDX_lcase,
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302 | IDX_LCASE,
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303 | #endif
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304 | };
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305 |
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306 | #define MI_ENTRY(N,T,F,B,M) N "\0"
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307 |
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308 | /* Mode names given on command line */
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309 | static const char mode_name[] =
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310 | MI_ENTRY("evenp", combination, REV | OMIT, 0, 0 )
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311 | MI_ENTRY("parity", combination, REV | OMIT, 0, 0 )
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312 | MI_ENTRY("oddp", combination, REV | OMIT, 0, 0 )
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313 | MI_ENTRY("nl", combination, REV | OMIT, 0, 0 )
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314 | MI_ENTRY("ek", combination, OMIT, 0, 0 )
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315 | MI_ENTRY("sane", combination, OMIT, 0, 0 )
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316 | MI_ENTRY("cooked", combination, REV | OMIT, 0, 0 )
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317 | MI_ENTRY("raw", combination, REV | OMIT, 0, 0 )
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318 | MI_ENTRY("pass8", combination, REV | OMIT, 0, 0 )
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319 | MI_ENTRY("litout", combination, REV | OMIT, 0, 0 )
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320 | MI_ENTRY("cbreak", combination, REV | OMIT, 0, 0 )
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321 | MI_ENTRY("crt", combination, OMIT, 0, 0 )
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322 | MI_ENTRY("dec", combination, OMIT, 0, 0 )
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323 | #if IXANY
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324 | MI_ENTRY("decctlq", combination, REV | OMIT, 0, 0 )
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325 | #endif
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326 | #if TABDLY || OXTABS
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327 | MI_ENTRY("tabs", combination, REV | OMIT, 0, 0 )
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328 | #endif
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329 | #if XCASE && IUCLC && OLCUC
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330 | MI_ENTRY("lcase", combination, REV | OMIT, 0, 0 )
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331 | MI_ENTRY("LCASE", combination, REV | OMIT, 0, 0 )
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332 | #endif
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333 | MI_ENTRY("parenb", control, REV, PARENB, 0 )
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334 | MI_ENTRY("parodd", control, REV, PARODD, 0 )
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335 | MI_ENTRY("cs5", control, 0, CS5, CSIZE)
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336 | MI_ENTRY("cs6", control, 0, CS6, CSIZE)
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337 | MI_ENTRY("cs7", control, 0, CS7, CSIZE)
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338 | MI_ENTRY("cs8", control, 0, CS8, CSIZE)
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339 | MI_ENTRY("hupcl", control, REV, HUPCL, 0 )
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340 | MI_ENTRY("hup", control, REV | OMIT, HUPCL, 0 )
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341 | MI_ENTRY("cstopb", control, REV, CSTOPB, 0 )
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342 | MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 )
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343 | MI_ENTRY("clocal", control, REV, CLOCAL, 0 )
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344 | #if CRTSCTS
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345 | MI_ENTRY("crtscts", control, REV, CRTSCTS, 0 )
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346 | #endif
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347 | MI_ENTRY("ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 )
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348 | MI_ENTRY("brkint", input, SANE_SET | REV, BRKINT, 0 )
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349 | MI_ENTRY("ignpar", input, REV, IGNPAR, 0 )
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350 | MI_ENTRY("parmrk", input, REV, PARMRK, 0 )
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351 | MI_ENTRY("inpck", input, REV, INPCK, 0 )
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352 | MI_ENTRY("istrip", input, REV, ISTRIP, 0 )
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353 | MI_ENTRY("inlcr", input, SANE_UNSET | REV, INLCR, 0 )
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354 | MI_ENTRY("igncr", input, SANE_UNSET | REV, IGNCR, 0 )
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355 | MI_ENTRY("icrnl", input, SANE_SET | REV, ICRNL, 0 )
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356 | MI_ENTRY("ixon", input, REV, IXON, 0 )
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357 | MI_ENTRY("ixoff", input, SANE_UNSET | REV, IXOFF, 0 )
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358 | MI_ENTRY("tandem", input, OMIT | REV, IXOFF, 0 )
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359 | #if IUCLC
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360 | MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 )
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361 | #endif
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362 | #if IXANY
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363 | MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 )
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364 | #endif
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365 | #if IMAXBEL
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366 | MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 )
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367 | #endif
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368 | #if IUTF8
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369 | MI_ENTRY("iutf8", input, SANE_UNSET | REV, IUTF8, 0 )
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370 | #endif
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371 | MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 )
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372 | #if OLCUC
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373 | MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 )
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374 | #endif
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375 | #if OCRNL
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376 | MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 )
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377 | #endif
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378 | #if ONLCR
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379 | MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 )
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380 | #endif
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381 | #if ONOCR
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382 | MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 )
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383 | #endif
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384 | #if ONLRET
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385 | MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 )
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386 | #endif
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387 | #if OFILL
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388 | MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 )
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389 | #endif
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390 | #if OFDEL
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391 | MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 )
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392 | #endif
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393 | #if NLDLY
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394 | MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY)
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395 | MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY)
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396 | #endif
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397 | #if CRDLY
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398 | MI_ENTRY("cr3", output, SANE_UNSET, CR3, CRDLY)
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399 | MI_ENTRY("cr2", output, SANE_UNSET, CR2, CRDLY)
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400 | MI_ENTRY("cr1", output, SANE_UNSET, CR1, CRDLY)
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401 | MI_ENTRY("cr0", output, SANE_SET, CR0, CRDLY)
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402 | #endif
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403 |
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404 | #if TABDLY
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405 | MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY)
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406 | # if TAB2
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407 | MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY)
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408 | # endif
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409 | # if TAB1
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410 | MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY)
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411 | # endif
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412 | MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY)
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413 | #else
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414 | # if OXTABS
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415 | MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 )
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416 | # endif
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417 | #endif
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418 |
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419 | #if BSDLY
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420 | MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY)
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421 | MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY)
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422 | #endif
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423 | #if VTDLY
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424 | MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY)
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425 | MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY)
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426 | #endif
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427 | #if FFDLY
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428 | MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY)
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429 | MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY)
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430 | #endif
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431 | MI_ENTRY("isig", local, SANE_SET | REV, ISIG, 0 )
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432 | MI_ENTRY("icanon", local, SANE_SET | REV, ICANON, 0 )
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433 | #if IEXTEN
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434 | MI_ENTRY("iexten", local, SANE_SET | REV, IEXTEN, 0 )
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435 | #endif
|
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436 | MI_ENTRY("echo", local, SANE_SET | REV, ECHO, 0 )
|
---|
437 | MI_ENTRY("echoe", local, SANE_SET | REV, ECHOE, 0 )
|
---|
438 | MI_ENTRY("crterase", local, OMIT | REV, ECHOE, 0 )
|
---|
439 | MI_ENTRY("echok", local, SANE_SET | REV, ECHOK, 0 )
|
---|
440 | MI_ENTRY("echonl", local, SANE_UNSET | REV, ECHONL, 0 )
|
---|
441 | MI_ENTRY("noflsh", local, SANE_UNSET | REV, NOFLSH, 0 )
|
---|
442 | #if XCASE
|
---|
443 | MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 )
|
---|
444 | #endif
|
---|
445 | #if TOSTOP
|
---|
446 | MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 )
|
---|
447 | #endif
|
---|
448 | #if ECHOPRT
|
---|
449 | MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 )
|
---|
450 | MI_ENTRY("prterase", local, OMIT | REV, ECHOPRT, 0 )
|
---|
451 | #endif
|
---|
452 | #if ECHOCTL
|
---|
453 | MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 )
|
---|
454 | MI_ENTRY("ctlecho", local, OMIT | REV, ECHOCTL, 0 )
|
---|
455 | #endif
|
---|
456 | #if ECHOKE
|
---|
457 | MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 )
|
---|
458 | MI_ENTRY("crtkill", local, OMIT | REV, ECHOKE, 0 )
|
---|
459 | #endif
|
---|
460 | ;
|
---|
461 |
|
---|
462 | #undef MI_ENTRY
|
---|
463 | #define MI_ENTRY(N,T,F,B,M) { T, F, M, B },
|
---|
464 |
|
---|
465 | static const struct mode_info mode_info[] = {
|
---|
466 | /* This should be verbatim cut-n-paste copy of the above MI_ENTRYs */
|
---|
467 | MI_ENTRY("evenp", combination, REV | OMIT, 0, 0 )
|
---|
468 | MI_ENTRY("parity", combination, REV | OMIT, 0, 0 )
|
---|
469 | MI_ENTRY("oddp", combination, REV | OMIT, 0, 0 )
|
---|
470 | MI_ENTRY("nl", combination, REV | OMIT, 0, 0 )
|
---|
471 | MI_ENTRY("ek", combination, OMIT, 0, 0 )
|
---|
472 | MI_ENTRY("sane", combination, OMIT, 0, 0 )
|
---|
473 | MI_ENTRY("cooked", combination, REV | OMIT, 0, 0 )
|
---|
474 | MI_ENTRY("raw", combination, REV | OMIT, 0, 0 )
|
---|
475 | MI_ENTRY("pass8", combination, REV | OMIT, 0, 0 )
|
---|
476 | MI_ENTRY("litout", combination, REV | OMIT, 0, 0 )
|
---|
477 | MI_ENTRY("cbreak", combination, REV | OMIT, 0, 0 )
|
---|
478 | MI_ENTRY("crt", combination, OMIT, 0, 0 )
|
---|
479 | MI_ENTRY("dec", combination, OMIT, 0, 0 )
|
---|
480 | #if IXANY
|
---|
481 | MI_ENTRY("decctlq", combination, REV | OMIT, 0, 0 )
|
---|
482 | #endif
|
---|
483 | #if TABDLY || OXTABS
|
---|
484 | MI_ENTRY("tabs", combination, REV | OMIT, 0, 0 )
|
---|
485 | #endif
|
---|
486 | #if XCASE && IUCLC && OLCUC
|
---|
487 | MI_ENTRY("lcase", combination, REV | OMIT, 0, 0 )
|
---|
488 | MI_ENTRY("LCASE", combination, REV | OMIT, 0, 0 )
|
---|
489 | #endif
|
---|
490 | MI_ENTRY("parenb", control, REV, PARENB, 0 )
|
---|
491 | MI_ENTRY("parodd", control, REV, PARODD, 0 )
|
---|
492 | MI_ENTRY("cs5", control, 0, CS5, CSIZE)
|
---|
493 | MI_ENTRY("cs6", control, 0, CS6, CSIZE)
|
---|
494 | MI_ENTRY("cs7", control, 0, CS7, CSIZE)
|
---|
495 | MI_ENTRY("cs8", control, 0, CS8, CSIZE)
|
---|
496 | MI_ENTRY("hupcl", control, REV, HUPCL, 0 )
|
---|
497 | MI_ENTRY("hup", control, REV | OMIT, HUPCL, 0 )
|
---|
498 | MI_ENTRY("cstopb", control, REV, CSTOPB, 0 )
|
---|
499 | MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 )
|
---|
500 | MI_ENTRY("clocal", control, REV, CLOCAL, 0 )
|
---|
501 | #if CRTSCTS
|
---|
502 | MI_ENTRY("crtscts", control, REV, CRTSCTS, 0 )
|
---|
503 | #endif
|
---|
504 | MI_ENTRY("ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 )
|
---|
505 | MI_ENTRY("brkint", input, SANE_SET | REV, BRKINT, 0 )
|
---|
506 | MI_ENTRY("ignpar", input, REV, IGNPAR, 0 )
|
---|
507 | MI_ENTRY("parmrk", input, REV, PARMRK, 0 )
|
---|
508 | MI_ENTRY("inpck", input, REV, INPCK, 0 )
|
---|
509 | MI_ENTRY("istrip", input, REV, ISTRIP, 0 )
|
---|
510 | MI_ENTRY("inlcr", input, SANE_UNSET | REV, INLCR, 0 )
|
---|
511 | MI_ENTRY("igncr", input, SANE_UNSET | REV, IGNCR, 0 )
|
---|
512 | MI_ENTRY("icrnl", input, SANE_SET | REV, ICRNL, 0 )
|
---|
513 | MI_ENTRY("ixon", input, REV, IXON, 0 )
|
---|
514 | MI_ENTRY("ixoff", input, SANE_UNSET | REV, IXOFF, 0 )
|
---|
515 | MI_ENTRY("tandem", input, OMIT | REV, IXOFF, 0 )
|
---|
516 | #if IUCLC
|
---|
517 | MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 )
|
---|
518 | #endif
|
---|
519 | #if IXANY
|
---|
520 | MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 )
|
---|
521 | #endif
|
---|
522 | #if IMAXBEL
|
---|
523 | MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 )
|
---|
524 | #endif
|
---|
525 | #if IUTF8
|
---|
526 | MI_ENTRY("iutf8", input, SANE_UNSET | REV, IUTF8, 0 )
|
---|
527 | #endif
|
---|
528 | MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 )
|
---|
529 | #if OLCUC
|
---|
530 | MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 )
|
---|
531 | #endif
|
---|
532 | #if OCRNL
|
---|
533 | MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 )
|
---|
534 | #endif
|
---|
535 | #if ONLCR
|
---|
536 | MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 )
|
---|
537 | #endif
|
---|
538 | #if ONOCR
|
---|
539 | MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 )
|
---|
540 | #endif
|
---|
541 | #if ONLRET
|
---|
542 | MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 )
|
---|
543 | #endif
|
---|
544 | #if OFILL
|
---|
545 | MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 )
|
---|
546 | #endif
|
---|
547 | #if OFDEL
|
---|
548 | MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 )
|
---|
549 | #endif
|
---|
550 | #if NLDLY
|
---|
551 | MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY)
|
---|
552 | MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY)
|
---|
553 | #endif
|
---|
554 | #if CRDLY
|
---|
555 | MI_ENTRY("cr3", output, SANE_UNSET, CR3, CRDLY)
|
---|
556 | MI_ENTRY("cr2", output, SANE_UNSET, CR2, CRDLY)
|
---|
557 | MI_ENTRY("cr1", output, SANE_UNSET, CR1, CRDLY)
|
---|
558 | MI_ENTRY("cr0", output, SANE_SET, CR0, CRDLY)
|
---|
559 | #endif
|
---|
560 |
|
---|
561 | #if TABDLY
|
---|
562 | MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY)
|
---|
563 | # if TAB2
|
---|
564 | MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY)
|
---|
565 | # endif
|
---|
566 | # if TAB1
|
---|
567 | MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY)
|
---|
568 | # endif
|
---|
569 | MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY)
|
---|
570 | #else
|
---|
571 | # if OXTABS
|
---|
572 | MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 )
|
---|
573 | # endif
|
---|
574 | #endif
|
---|
575 |
|
---|
576 | #if BSDLY
|
---|
577 | MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY)
|
---|
578 | MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY)
|
---|
579 | #endif
|
---|
580 | #if VTDLY
|
---|
581 | MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY)
|
---|
582 | MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY)
|
---|
583 | #endif
|
---|
584 | #if FFDLY
|
---|
585 | MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY)
|
---|
586 | MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY)
|
---|
587 | #endif
|
---|
588 | MI_ENTRY("isig", local, SANE_SET | REV, ISIG, 0 )
|
---|
589 | MI_ENTRY("icanon", local, SANE_SET | REV, ICANON, 0 )
|
---|
590 | #if IEXTEN
|
---|
591 | MI_ENTRY("iexten", local, SANE_SET | REV, IEXTEN, 0 )
|
---|
592 | #endif
|
---|
593 | MI_ENTRY("echo", local, SANE_SET | REV, ECHO, 0 )
|
---|
594 | MI_ENTRY("echoe", local, SANE_SET | REV, ECHOE, 0 )
|
---|
595 | MI_ENTRY("crterase", local, OMIT | REV, ECHOE, 0 )
|
---|
596 | MI_ENTRY("echok", local, SANE_SET | REV, ECHOK, 0 )
|
---|
597 | MI_ENTRY("echonl", local, SANE_UNSET | REV, ECHONL, 0 )
|
---|
598 | MI_ENTRY("noflsh", local, SANE_UNSET | REV, NOFLSH, 0 )
|
---|
599 | #if XCASE
|
---|
600 | MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 )
|
---|
601 | #endif
|
---|
602 | #if TOSTOP
|
---|
603 | MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 )
|
---|
604 | #endif
|
---|
605 | #if ECHOPRT
|
---|
606 | MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 )
|
---|
607 | MI_ENTRY("prterase", local, OMIT | REV, ECHOPRT, 0 )
|
---|
608 | #endif
|
---|
609 | #if ECHOCTL
|
---|
610 | MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 )
|
---|
611 | MI_ENTRY("ctlecho", local, OMIT | REV, ECHOCTL, 0 )
|
---|
612 | #endif
|
---|
613 | #if ECHOKE
|
---|
614 | MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 )
|
---|
615 | MI_ENTRY("crtkill", local, OMIT | REV, ECHOKE, 0 )
|
---|
616 | #endif
|
---|
617 | };
|
---|
618 |
|
---|
619 | enum {
|
---|
620 | NUM_mode_info = ARRAY_SIZE(mode_info)
|
---|
621 | };
|
---|
622 |
|
---|
623 |
|
---|
624 | /* Control characters */
|
---|
625 | struct control_info {
|
---|
626 | const uint8_t saneval; /* Value to set for 'stty sane' */
|
---|
627 | const uint8_t offset; /* Offset in c_cc */
|
---|
628 | };
|
---|
629 |
|
---|
630 | enum {
|
---|
631 | /* Must match control_name[] and control_info[] order! */
|
---|
632 | CIDX_intr = 0,
|
---|
633 | CIDX_quit,
|
---|
634 | CIDX_erase,
|
---|
635 | CIDX_kill,
|
---|
636 | CIDX_eof,
|
---|
637 | CIDX_eol,
|
---|
638 | #if VEOL2
|
---|
639 | CIDX_eol2,
|
---|
640 | #endif
|
---|
641 | #if VSWTCH
|
---|
642 | CIDX_swtch,
|
---|
643 | #endif
|
---|
644 | CIDX_start,
|
---|
645 | CIDX_stop,
|
---|
646 | CIDX_susp,
|
---|
647 | #if VDSUSP
|
---|
648 | CIDX_dsusp,
|
---|
649 | #endif
|
---|
650 | #if VREPRINT
|
---|
651 | CIDX_rprnt,
|
---|
652 | #endif
|
---|
653 | #if VWERASE
|
---|
654 | CIDX_werase,
|
---|
655 | #endif
|
---|
656 | #if VLNEXT
|
---|
657 | CIDX_lnext,
|
---|
658 | #endif
|
---|
659 | #if VFLUSHO
|
---|
660 | CIDX_flush,
|
---|
661 | #endif
|
---|
662 | #if VSTATUS
|
---|
663 | CIDX_status,
|
---|
664 | #endif
|
---|
665 | CIDX_min,
|
---|
666 | CIDX_time,
|
---|
667 | };
|
---|
668 |
|
---|
669 | #define CI_ENTRY(n,s,o) n "\0"
|
---|
670 |
|
---|
671 | /* Name given on command line */
|
---|
672 | static const char control_name[] =
|
---|
673 | CI_ENTRY("intr", CINTR, VINTR )
|
---|
674 | CI_ENTRY("quit", CQUIT, VQUIT )
|
---|
675 | CI_ENTRY("erase", CERASE, VERASE )
|
---|
676 | CI_ENTRY("kill", CKILL, VKILL )
|
---|
677 | CI_ENTRY("eof", CEOF, VEOF )
|
---|
678 | CI_ENTRY("eol", CEOL, VEOL )
|
---|
679 | #if VEOL2
|
---|
680 | CI_ENTRY("eol2", CEOL2, VEOL2 )
|
---|
681 | #endif
|
---|
682 | #if VSWTCH
|
---|
683 | CI_ENTRY("swtch", CSWTCH, VSWTCH )
|
---|
684 | #endif
|
---|
685 | CI_ENTRY("start", CSTART, VSTART )
|
---|
686 | CI_ENTRY("stop", CSTOP, VSTOP )
|
---|
687 | CI_ENTRY("susp", CSUSP, VSUSP )
|
---|
688 | #if VDSUSP
|
---|
689 | CI_ENTRY("dsusp", CDSUSP, VDSUSP )
|
---|
690 | #endif
|
---|
691 | #if VREPRINT
|
---|
692 | CI_ENTRY("rprnt", CRPRNT, VREPRINT)
|
---|
693 | #endif
|
---|
694 | #if VWERASE
|
---|
695 | CI_ENTRY("werase", CWERASE, VWERASE )
|
---|
696 | #endif
|
---|
697 | #if VLNEXT
|
---|
698 | CI_ENTRY("lnext", CLNEXT, VLNEXT )
|
---|
699 | #endif
|
---|
700 | #if VFLUSHO
|
---|
701 | CI_ENTRY("flush", CFLUSHO, VFLUSHO )
|
---|
702 | #endif
|
---|
703 | #if VSTATUS
|
---|
704 | CI_ENTRY("status", CSTATUS, VSTATUS )
|
---|
705 | #endif
|
---|
706 | /* These must be last because of the display routines */
|
---|
707 | CI_ENTRY("min", 1, VMIN )
|
---|
708 | CI_ENTRY("time", 0, VTIME )
|
---|
709 | ;
|
---|
710 |
|
---|
711 | #undef CI_ENTRY
|
---|
712 | #define CI_ENTRY(n,s,o) { s, o },
|
---|
713 |
|
---|
714 | static const struct control_info control_info[] = {
|
---|
715 | /* This should be verbatim cut-n-paste copy of the above CI_ENTRYs */
|
---|
716 | CI_ENTRY("intr", CINTR, VINTR )
|
---|
717 | CI_ENTRY("quit", CQUIT, VQUIT )
|
---|
718 | CI_ENTRY("erase", CERASE, VERASE )
|
---|
719 | CI_ENTRY("kill", CKILL, VKILL )
|
---|
720 | CI_ENTRY("eof", CEOF, VEOF )
|
---|
721 | CI_ENTRY("eol", CEOL, VEOL )
|
---|
722 | #if VEOL2
|
---|
723 | CI_ENTRY("eol2", CEOL2, VEOL2 )
|
---|
724 | #endif
|
---|
725 | #if VSWTCH
|
---|
726 | CI_ENTRY("swtch", CSWTCH, VSWTCH )
|
---|
727 | #endif
|
---|
728 | CI_ENTRY("start", CSTART, VSTART )
|
---|
729 | CI_ENTRY("stop", CSTOP, VSTOP )
|
---|
730 | CI_ENTRY("susp", CSUSP, VSUSP )
|
---|
731 | #if VDSUSP
|
---|
732 | CI_ENTRY("dsusp", CDSUSP, VDSUSP )
|
---|
733 | #endif
|
---|
734 | #if VREPRINT
|
---|
735 | CI_ENTRY("rprnt", CRPRNT, VREPRINT)
|
---|
736 | #endif
|
---|
737 | #if VWERASE
|
---|
738 | CI_ENTRY("werase", CWERASE, VWERASE )
|
---|
739 | #endif
|
---|
740 | #if VLNEXT
|
---|
741 | CI_ENTRY("lnext", CLNEXT, VLNEXT )
|
---|
742 | #endif
|
---|
743 | #if VFLUSHO
|
---|
744 | CI_ENTRY("flush", CFLUSHO, VFLUSHO )
|
---|
745 | #endif
|
---|
746 | #if VSTATUS
|
---|
747 | CI_ENTRY("status", CSTATUS, VSTATUS )
|
---|
748 | #endif
|
---|
749 | /* These must be last because of the display routines */
|
---|
750 | CI_ENTRY("min", 1, VMIN )
|
---|
751 | CI_ENTRY("time", 0, VTIME )
|
---|
752 | };
|
---|
753 |
|
---|
754 | enum {
|
---|
755 | NUM_control_info = ARRAY_SIZE(control_info)
|
---|
756 | };
|
---|
757 |
|
---|
758 |
|
---|
759 | struct globals {
|
---|
760 | const char *device_name;
|
---|
761 | /* The width of the screen, for output wrapping */
|
---|
762 | unsigned max_col;
|
---|
763 | /* Current position, to know when to wrap */
|
---|
764 | unsigned current_col;
|
---|
765 | char buf[10];
|
---|
766 | } FIX_ALIASING;
|
---|
767 | #define G (*(struct globals*)&bb_common_bufsiz1)
|
---|
768 | #define INIT_G() do { \
|
---|
769 | G.device_name = bb_msg_standard_input; \
|
---|
770 | G.max_col = 80; \
|
---|
771 | } while (0)
|
---|
772 |
|
---|
773 |
|
---|
774 | /* Return a string that is the printable representation of character CH */
|
---|
775 | /* Adapted from 'cat' by Torbjorn Granlund */
|
---|
776 | static const char *visible(unsigned ch)
|
---|
777 | {
|
---|
778 | char *bpout = G.buf;
|
---|
779 |
|
---|
780 | if (ch == _POSIX_VDISABLE)
|
---|
781 | return "<undef>";
|
---|
782 |
|
---|
783 | if (ch >= 128) {
|
---|
784 | ch -= 128;
|
---|
785 | *bpout++ = 'M';
|
---|
786 | *bpout++ = '-';
|
---|
787 | }
|
---|
788 |
|
---|
789 | if (ch < 32) {
|
---|
790 | *bpout++ = '^';
|
---|
791 | *bpout++ = ch + 64;
|
---|
792 | } else if (ch < 127) {
|
---|
793 | *bpout++ = ch;
|
---|
794 | } else {
|
---|
795 | *bpout++ = '^';
|
---|
796 | *bpout++ = '?';
|
---|
797 | }
|
---|
798 |
|
---|
799 | *bpout = '\0';
|
---|
800 | return G.buf;
|
---|
801 | }
|
---|
802 |
|
---|
803 | static tcflag_t *mode_type_flag(unsigned type, const struct termios *mode)
|
---|
804 | {
|
---|
805 | static const uint8_t tcflag_offsets[] ALIGN1 = {
|
---|
806 | offsetof(struct termios, c_cflag), /* control */
|
---|
807 | offsetof(struct termios, c_iflag), /* input */
|
---|
808 | offsetof(struct termios, c_oflag), /* output */
|
---|
809 | offsetof(struct termios, c_lflag) /* local */
|
---|
810 | };
|
---|
811 |
|
---|
812 | if (type <= local) {
|
---|
813 | return (tcflag_t*) (((char*)mode) + tcflag_offsets[type]);
|
---|
814 | }
|
---|
815 | return NULL;
|
---|
816 | }
|
---|
817 |
|
---|
818 | static void set_speed_or_die(enum speed_setting type, const char *arg,
|
---|
819 | struct termios *mode)
|
---|
820 | {
|
---|
821 | speed_t baud;
|
---|
822 |
|
---|
823 | baud = tty_value_to_baud(xatou(arg));
|
---|
824 |
|
---|
825 | if (type != output_speed) { /* either input or both */
|
---|
826 | cfsetispeed(mode, baud);
|
---|
827 | }
|
---|
828 | if (type != input_speed) { /* either output or both */
|
---|
829 | cfsetospeed(mode, baud);
|
---|
830 | }
|
---|
831 | }
|
---|
832 |
|
---|
833 | static NORETURN void perror_on_device_and_die(const char *fmt)
|
---|
834 | {
|
---|
835 | bb_perror_msg_and_die(fmt, G.device_name);
|
---|
836 | }
|
---|
837 |
|
---|
838 | static void perror_on_device(const char *fmt)
|
---|
839 | {
|
---|
840 | bb_perror_msg(fmt, G.device_name);
|
---|
841 | }
|
---|
842 |
|
---|
843 | /* Print format string MESSAGE and optional args.
|
---|
844 | Wrap to next line first if it won't fit.
|
---|
845 | Print a space first unless MESSAGE will start a new line */
|
---|
846 | static void wrapf(const char *message, ...)
|
---|
847 | {
|
---|
848 | char buf[128];
|
---|
849 | va_list args;
|
---|
850 | unsigned buflen;
|
---|
851 |
|
---|
852 | va_start(args, message);
|
---|
853 | buflen = vsnprintf(buf, sizeof(buf), message, args);
|
---|
854 | va_end(args);
|
---|
855 | /* We seem to be called only with suitable lengths, but check if
|
---|
856 | somebody failed to adhere to this assumption just to be sure. */
|
---|
857 | if (!buflen || buflen >= sizeof(buf)) return;
|
---|
858 |
|
---|
859 | if (G.current_col > 0) {
|
---|
860 | G.current_col++;
|
---|
861 | if (buf[0] != '\n') {
|
---|
862 | if (G.current_col + buflen >= G.max_col) {
|
---|
863 | bb_putchar('\n');
|
---|
864 | G.current_col = 0;
|
---|
865 | } else
|
---|
866 | bb_putchar(' ');
|
---|
867 | }
|
---|
868 | }
|
---|
869 | fputs(buf, stdout);
|
---|
870 | G.current_col += buflen;
|
---|
871 | if (buf[buflen-1] == '\n')
|
---|
872 | G.current_col = 0;
|
---|
873 | }
|
---|
874 |
|
---|
875 | static void newline(void)
|
---|
876 | {
|
---|
877 | if (G.current_col != 0)
|
---|
878 | wrapf("\n");
|
---|
879 | }
|
---|
880 |
|
---|
881 | #ifdef TIOCGWINSZ
|
---|
882 | static void set_window_size(int rows, int cols)
|
---|
883 | {
|
---|
884 | struct winsize win = { 0, 0, 0, 0 };
|
---|
885 |
|
---|
886 | if (ioctl(STDIN_FILENO, TIOCGWINSZ, &win)) {
|
---|
887 | if (errno != EINVAL) {
|
---|
888 | goto bail;
|
---|
889 | }
|
---|
890 | memset(&win, 0, sizeof(win));
|
---|
891 | }
|
---|
892 |
|
---|
893 | if (rows >= 0)
|
---|
894 | win.ws_row = rows;
|
---|
895 | if (cols >= 0)
|
---|
896 | win.ws_col = cols;
|
---|
897 |
|
---|
898 | if (ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win))
|
---|
899 | bail:
|
---|
900 | perror_on_device("%s");
|
---|
901 | }
|
---|
902 | #endif
|
---|
903 |
|
---|
904 | static void display_window_size(int fancy)
|
---|
905 | {
|
---|
906 | const char *fmt_str = "%s\0%s: no size information for this device";
|
---|
907 | unsigned width, height;
|
---|
908 |
|
---|
909 | if (get_terminal_width_height(STDIN_FILENO, &width, &height)) {
|
---|
910 | if ((errno != EINVAL) || ((fmt_str += 2), !fancy)) {
|
---|
911 | perror_on_device(fmt_str);
|
---|
912 | }
|
---|
913 | } else {
|
---|
914 | wrapf(fancy ? "rows %u; columns %u;" : "%u %u\n",
|
---|
915 | height, width);
|
---|
916 | }
|
---|
917 | }
|
---|
918 |
|
---|
919 | static const struct suffix_mult stty_suffixes[] = {
|
---|
920 | { "b", 512 },
|
---|
921 | { "k", 1024 },
|
---|
922 | { "B", 1024 },
|
---|
923 | { "", 0 }
|
---|
924 | };
|
---|
925 |
|
---|
926 | static const struct mode_info *find_mode(const char *name)
|
---|
927 | {
|
---|
928 | int i = index_in_strings(mode_name, name);
|
---|
929 | return i >= 0 ? &mode_info[i] : NULL;
|
---|
930 | }
|
---|
931 |
|
---|
932 | static const struct control_info *find_control(const char *name)
|
---|
933 | {
|
---|
934 | int i = index_in_strings(control_name, name);
|
---|
935 | return i >= 0 ? &control_info[i] : NULL;
|
---|
936 | }
|
---|
937 |
|
---|
938 | enum {
|
---|
939 | param_need_arg = 0x80,
|
---|
940 | param_line = 1 | 0x80,
|
---|
941 | param_rows = 2 | 0x80,
|
---|
942 | param_cols = 3 | 0x80,
|
---|
943 | param_columns = 4 | 0x80,
|
---|
944 | param_size = 5,
|
---|
945 | param_speed = 6,
|
---|
946 | param_ispeed = 7 | 0x80,
|
---|
947 | param_ospeed = 8 | 0x80,
|
---|
948 | };
|
---|
949 |
|
---|
950 | static int find_param(const char *name)
|
---|
951 | {
|
---|
952 | static const char params[] ALIGN1 =
|
---|
953 | "line\0" /* 1 */
|
---|
954 | "rows\0" /* 2 */
|
---|
955 | "cols\0" /* 3 */
|
---|
956 | "columns\0" /* 4 */
|
---|
957 | "size\0" /* 5 */
|
---|
958 | "speed\0" /* 6 */
|
---|
959 | "ispeed\0"
|
---|
960 | "ospeed\0";
|
---|
961 | int i = index_in_strings(params, name) + 1;
|
---|
962 | if (i == 0)
|
---|
963 | return 0;
|
---|
964 | if (i != 5 && i != 6)
|
---|
965 | i |= 0x80;
|
---|
966 | return i;
|
---|
967 | }
|
---|
968 |
|
---|
969 | static int recover_mode(const char *arg, struct termios *mode)
|
---|
970 | {
|
---|
971 | int i, n;
|
---|
972 | unsigned chr;
|
---|
973 | unsigned long iflag, oflag, cflag, lflag;
|
---|
974 |
|
---|
975 | /* Scan into temporaries since it is too much trouble to figure out
|
---|
976 | the right format for 'tcflag_t' */
|
---|
977 | if (sscanf(arg, "%lx:%lx:%lx:%lx%n",
|
---|
978 | &iflag, &oflag, &cflag, &lflag, &n) != 4)
|
---|
979 | return 0;
|
---|
980 | mode->c_iflag = iflag;
|
---|
981 | mode->c_oflag = oflag;
|
---|
982 | mode->c_cflag = cflag;
|
---|
983 | mode->c_lflag = lflag;
|
---|
984 | arg += n;
|
---|
985 | for (i = 0; i < NCCS; ++i) {
|
---|
986 | if (sscanf(arg, ":%x%n", &chr, &n) != 1)
|
---|
987 | return 0;
|
---|
988 | mode->c_cc[i] = chr;
|
---|
989 | arg += n;
|
---|
990 | }
|
---|
991 |
|
---|
992 | /* Fail if there are too many fields */
|
---|
993 | if (*arg != '\0')
|
---|
994 | return 0;
|
---|
995 |
|
---|
996 | return 1;
|
---|
997 | }
|
---|
998 |
|
---|
999 | static void display_recoverable(const struct termios *mode,
|
---|
1000 | int UNUSED_PARAM dummy)
|
---|
1001 | {
|
---|
1002 | int i;
|
---|
1003 | printf("%lx:%lx:%lx:%lx",
|
---|
1004 | (unsigned long) mode->c_iflag, (unsigned long) mode->c_oflag,
|
---|
1005 | (unsigned long) mode->c_cflag, (unsigned long) mode->c_lflag);
|
---|
1006 | for (i = 0; i < NCCS; ++i)
|
---|
1007 | printf(":%x", (unsigned int) mode->c_cc[i]);
|
---|
1008 | bb_putchar('\n');
|
---|
1009 | }
|
---|
1010 |
|
---|
1011 | static void display_speed(const struct termios *mode, int fancy)
|
---|
1012 | {
|
---|
1013 | //____________________ 01234567 8 9
|
---|
1014 | const char *fmt_str = "%lu %lu\n\0ispeed %lu baud; ospeed %lu baud;";
|
---|
1015 | unsigned long ispeed, ospeed;
|
---|
1016 |
|
---|
1017 | ispeed = cfgetispeed(mode);
|
---|
1018 | ospeed = cfgetospeed(mode);
|
---|
1019 | if (ispeed == 0 || ispeed == ospeed) {
|
---|
1020 | ispeed = ospeed; /* in case ispeed was 0 */
|
---|
1021 | //________ 0123 4 5 6 7 8 9
|
---|
1022 | fmt_str = "%lu\n\0\0\0\0\0speed %lu baud;";
|
---|
1023 | }
|
---|
1024 | if (fancy) fmt_str += 9;
|
---|
1025 | wrapf(fmt_str, tty_baud_to_value(ispeed), tty_baud_to_value(ospeed));
|
---|
1026 | }
|
---|
1027 |
|
---|
1028 | static void do_display(const struct termios *mode, int all)
|
---|
1029 | {
|
---|
1030 | int i;
|
---|
1031 | tcflag_t *bitsp;
|
---|
1032 | unsigned long mask;
|
---|
1033 | int prev_type = control;
|
---|
1034 |
|
---|
1035 | display_speed(mode, 1);
|
---|
1036 | if (all)
|
---|
1037 | display_window_size(1);
|
---|
1038 | #ifdef __linux__
|
---|
1039 | wrapf("line = %u;\n", mode->c_line);
|
---|
1040 | #else
|
---|
1041 | newline();
|
---|
1042 | #endif
|
---|
1043 |
|
---|
1044 | for (i = 0; i != CIDX_min; ++i) {
|
---|
1045 | /* If swtch is the same as susp, don't print both */
|
---|
1046 | #if VSWTCH == VSUSP
|
---|
1047 | if (i == CIDX_swtch)
|
---|
1048 | continue;
|
---|
1049 | #endif
|
---|
1050 | /* If eof uses the same slot as min, only print whichever applies */
|
---|
1051 | #if VEOF == VMIN
|
---|
1052 | if (!(mode->c_lflag & ICANON)
|
---|
1053 | && (i == CIDX_eof || i == CIDX_eol)
|
---|
1054 | ) {
|
---|
1055 | continue;
|
---|
1056 | }
|
---|
1057 | #endif
|
---|
1058 | wrapf("%s = %s;", nth_string(control_name, i),
|
---|
1059 | visible(mode->c_cc[control_info[i].offset]));
|
---|
1060 | }
|
---|
1061 | #if VEOF == VMIN
|
---|
1062 | if ((mode->c_lflag & ICANON) == 0)
|
---|
1063 | #endif
|
---|
1064 | wrapf("min = %u; time = %u;", mode->c_cc[VMIN], mode->c_cc[VTIME]);
|
---|
1065 | newline();
|
---|
1066 |
|
---|
1067 | for (i = 0; i < NUM_mode_info; ++i) {
|
---|
1068 | if (mode_info[i].flags & OMIT)
|
---|
1069 | continue;
|
---|
1070 | if (mode_info[i].type != prev_type) {
|
---|
1071 | newline();
|
---|
1072 | prev_type = mode_info[i].type;
|
---|
1073 | }
|
---|
1074 |
|
---|
1075 | bitsp = mode_type_flag(mode_info[i].type, mode);
|
---|
1076 | mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
|
---|
1077 | if ((*bitsp & mask) == mode_info[i].bits) {
|
---|
1078 | if (all || (mode_info[i].flags & SANE_UNSET))
|
---|
1079 | wrapf("-%s"+1, nth_string(mode_name, i));
|
---|
1080 | } else {
|
---|
1081 | if ((all && mode_info[i].flags & REV)
|
---|
1082 | || (!all && (mode_info[i].flags & (SANE_SET | REV)) == (SANE_SET | REV))
|
---|
1083 | ) {
|
---|
1084 | wrapf("-%s", nth_string(mode_name, i));
|
---|
1085 | }
|
---|
1086 | }
|
---|
1087 | }
|
---|
1088 | newline();
|
---|
1089 | }
|
---|
1090 |
|
---|
1091 | static void sane_mode(struct termios *mode)
|
---|
1092 | {
|
---|
1093 | int i;
|
---|
1094 | tcflag_t *bitsp;
|
---|
1095 |
|
---|
1096 | for (i = 0; i < NUM_control_info; ++i) {
|
---|
1097 | #if VMIN == VEOF
|
---|
1098 | if (i == CIDX_min)
|
---|
1099 | break;
|
---|
1100 | #endif
|
---|
1101 | mode->c_cc[control_info[i].offset] = control_info[i].saneval;
|
---|
1102 | }
|
---|
1103 |
|
---|
1104 | for (i = 0; i < NUM_mode_info; ++i) {
|
---|
1105 | if (mode_info[i].flags & SANE_SET) {
|
---|
1106 | bitsp = mode_type_flag(mode_info[i].type, mode);
|
---|
1107 | *bitsp = (*bitsp & ~((unsigned long)mode_info[i].mask))
|
---|
1108 | | mode_info[i].bits;
|
---|
1109 | } else if (mode_info[i].flags & SANE_UNSET) {
|
---|
1110 | bitsp = mode_type_flag(mode_info[i].type, mode);
|
---|
1111 | *bitsp = *bitsp & ~((unsigned long)mode_info[i].mask)
|
---|
1112 | & ~mode_info[i].bits;
|
---|
1113 | }
|
---|
1114 | }
|
---|
1115 | }
|
---|
1116 |
|
---|
1117 | static void set_mode(const struct mode_info *info, int reversed,
|
---|
1118 | struct termios *mode)
|
---|
1119 | {
|
---|
1120 | tcflag_t *bitsp;
|
---|
1121 |
|
---|
1122 | bitsp = mode_type_flag(info->type, mode);
|
---|
1123 |
|
---|
1124 | if (bitsp) {
|
---|
1125 | if (reversed)
|
---|
1126 | *bitsp = *bitsp & ~info->mask & ~info->bits;
|
---|
1127 | else
|
---|
1128 | *bitsp = (*bitsp & ~info->mask) | info->bits;
|
---|
1129 | return;
|
---|
1130 | }
|
---|
1131 |
|
---|
1132 | /* Combination mode */
|
---|
1133 | if (info == &mode_info[IDX_evenp] || info == &mode_info[IDX_parity]) {
|
---|
1134 | if (reversed)
|
---|
1135 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
1136 | else
|
---|
1137 | mode->c_cflag = (mode->c_cflag & ~PARODD & ~CSIZE) | PARENB | CS7;
|
---|
1138 | } else if (info == &mode_info[IDX_oddp]) {
|
---|
1139 | if (reversed)
|
---|
1140 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
1141 | else
|
---|
1142 | mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARODD | PARENB;
|
---|
1143 | } else if (info == &mode_info[IDX_nl]) {
|
---|
1144 | if (reversed) {
|
---|
1145 | mode->c_iflag = (mode->c_iflag | ICRNL) & ~INLCR & ~IGNCR;
|
---|
1146 | mode->c_oflag = (mode->c_oflag | ONLCR) & ~OCRNL & ~ONLRET;
|
---|
1147 | } else {
|
---|
1148 | mode->c_iflag = mode->c_iflag & ~ICRNL;
|
---|
1149 | if (ONLCR) mode->c_oflag = mode->c_oflag & ~ONLCR;
|
---|
1150 | }
|
---|
1151 | } else if (info == &mode_info[IDX_ek]) {
|
---|
1152 | mode->c_cc[VERASE] = CERASE;
|
---|
1153 | mode->c_cc[VKILL] = CKILL;
|
---|
1154 | } else if (info == &mode_info[IDX_sane]) {
|
---|
1155 | sane_mode(mode);
|
---|
1156 | } else if (info == &mode_info[IDX_cbreak]) {
|
---|
1157 | if (reversed)
|
---|
1158 | mode->c_lflag |= ICANON;
|
---|
1159 | else
|
---|
1160 | mode->c_lflag &= ~ICANON;
|
---|
1161 | } else if (info == &mode_info[IDX_pass8]) {
|
---|
1162 | if (reversed) {
|
---|
1163 | mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
|
---|
1164 | mode->c_iflag |= ISTRIP;
|
---|
1165 | } else {
|
---|
1166 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
1167 | mode->c_iflag &= ~ISTRIP;
|
---|
1168 | }
|
---|
1169 | } else if (info == &mode_info[IDX_litout]) {
|
---|
1170 | if (reversed) {
|
---|
1171 | mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
|
---|
1172 | mode->c_iflag |= ISTRIP;
|
---|
1173 | mode->c_oflag |= OPOST;
|
---|
1174 | } else {
|
---|
1175 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
1176 | mode->c_iflag &= ~ISTRIP;
|
---|
1177 | mode->c_oflag &= ~OPOST;
|
---|
1178 | }
|
---|
1179 | } else if (info == &mode_info[IDX_raw] || info == &mode_info[IDX_cooked]) {
|
---|
1180 | if ((info == &mode_info[IDX_raw] && reversed)
|
---|
1181 | || (info == &mode_info[IDX_cooked] && !reversed)
|
---|
1182 | ) {
|
---|
1183 | /* Cooked mode */
|
---|
1184 | mode->c_iflag |= BRKINT | IGNPAR | ISTRIP | ICRNL | IXON;
|
---|
1185 | mode->c_oflag |= OPOST;
|
---|
1186 | mode->c_lflag |= ISIG | ICANON;
|
---|
1187 | #if VMIN == VEOF
|
---|
1188 | mode->c_cc[VEOF] = CEOF;
|
---|
1189 | #endif
|
---|
1190 | #if VTIME == VEOL
|
---|
1191 | mode->c_cc[VEOL] = CEOL;
|
---|
1192 | #endif
|
---|
1193 | } else {
|
---|
1194 | /* Raw mode */
|
---|
1195 | mode->c_iflag = 0;
|
---|
1196 | mode->c_oflag &= ~OPOST;
|
---|
1197 | mode->c_lflag &= ~(ISIG | ICANON | XCASE);
|
---|
1198 | mode->c_cc[VMIN] = 1;
|
---|
1199 | mode->c_cc[VTIME] = 0;
|
---|
1200 | }
|
---|
1201 | }
|
---|
1202 | #if IXANY
|
---|
1203 | else if (info == &mode_info[IDX_decctlq]) {
|
---|
1204 | if (reversed)
|
---|
1205 | mode->c_iflag |= IXANY;
|
---|
1206 | else
|
---|
1207 | mode->c_iflag &= ~IXANY;
|
---|
1208 | }
|
---|
1209 | #endif
|
---|
1210 | #if TABDLY
|
---|
1211 | else if (info == &mode_info[IDX_tabs]) {
|
---|
1212 | if (reversed)
|
---|
1213 | mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
|
---|
1214 | else
|
---|
1215 | mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
|
---|
1216 | }
|
---|
1217 | #endif
|
---|
1218 | #if OXTABS
|
---|
1219 | else if (info == &mode_info[IDX_tabs]) {
|
---|
1220 | if (reversed)
|
---|
1221 | mode->c_oflag |= OXTABS;
|
---|
1222 | else
|
---|
1223 | mode->c_oflag &= ~OXTABS;
|
---|
1224 | }
|
---|
1225 | #endif
|
---|
1226 | #if XCASE && IUCLC && OLCUC
|
---|
1227 | else if (info==&mode_info[IDX_lcase] || info==&mode_info[IDX_LCASE]) {
|
---|
1228 | if (reversed) {
|
---|
1229 | mode->c_lflag &= ~XCASE;
|
---|
1230 | mode->c_iflag &= ~IUCLC;
|
---|
1231 | mode->c_oflag &= ~OLCUC;
|
---|
1232 | } else {
|
---|
1233 | mode->c_lflag |= XCASE;
|
---|
1234 | mode->c_iflag |= IUCLC;
|
---|
1235 | mode->c_oflag |= OLCUC;
|
---|
1236 | }
|
---|
1237 | }
|
---|
1238 | #endif
|
---|
1239 | else if (info == &mode_info[IDX_crt]) {
|
---|
1240 | mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
|
---|
1241 | } else if (info == &mode_info[IDX_dec]) {
|
---|
1242 | mode->c_cc[VINTR] = 3; /* ^C */
|
---|
1243 | mode->c_cc[VERASE] = 127; /* DEL */
|
---|
1244 | mode->c_cc[VKILL] = 21; /* ^U */
|
---|
1245 | mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
|
---|
1246 | if (IXANY) mode->c_iflag &= ~IXANY;
|
---|
1247 | }
|
---|
1248 | }
|
---|
1249 |
|
---|
1250 | static void set_control_char_or_die(const struct control_info *info,
|
---|
1251 | const char *arg, struct termios *mode)
|
---|
1252 | {
|
---|
1253 | unsigned char value;
|
---|
1254 |
|
---|
1255 | if (info == &control_info[CIDX_min] || info == &control_info[CIDX_time])
|
---|
1256 | value = xatoul_range_sfx(arg, 0, 0xff, stty_suffixes);
|
---|
1257 | else if (arg[0] == '\0' || arg[1] == '\0')
|
---|
1258 | value = arg[0];
|
---|
1259 | else if (strcmp(arg, "^-") == 0 || strcmp(arg, "undef") == 0)
|
---|
1260 | value = _POSIX_VDISABLE;
|
---|
1261 | else if (arg[0] == '^') { /* Ignore any trailing junk (^Cjunk) */
|
---|
1262 | value = arg[1] & 0x1f; /* Non-letters get weird results */
|
---|
1263 | if (arg[1] == '?')
|
---|
1264 | value = 127;
|
---|
1265 | } else
|
---|
1266 | value = xatoul_range_sfx(arg, 0, 0xff, stty_suffixes);
|
---|
1267 | mode->c_cc[info->offset] = value;
|
---|
1268 | }
|
---|
1269 |
|
---|
1270 | #define STTY_require_set_attr (1 << 0)
|
---|
1271 | #define STTY_speed_was_set (1 << 1)
|
---|
1272 | #define STTY_verbose_output (1 << 2)
|
---|
1273 | #define STTY_recoverable_output (1 << 3)
|
---|
1274 | #define STTY_noargs (1 << 4)
|
---|
1275 |
|
---|
1276 | int stty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
1277 | int stty_main(int argc UNUSED_PARAM, char **argv)
|
---|
1278 | {
|
---|
1279 | struct termios mode;
|
---|
1280 | void (*output_func)(const struct termios *, int);
|
---|
1281 | const char *file_name = NULL;
|
---|
1282 | int display_all = 0;
|
---|
1283 | int stty_state;
|
---|
1284 | int k;
|
---|
1285 |
|
---|
1286 | INIT_G();
|
---|
1287 |
|
---|
1288 | stty_state = STTY_noargs;
|
---|
1289 | output_func = do_display;
|
---|
1290 |
|
---|
1291 | /* First pass: only parse/verify command line params */
|
---|
1292 | k = 0;
|
---|
1293 | while (argv[++k]) {
|
---|
1294 | const struct mode_info *mp;
|
---|
1295 | const struct control_info *cp;
|
---|
1296 | const char *arg = argv[k];
|
---|
1297 | const char *argnext = argv[k+1];
|
---|
1298 | int param;
|
---|
1299 |
|
---|
1300 | if (arg[0] == '-') {
|
---|
1301 | int i;
|
---|
1302 | mp = find_mode(arg+1);
|
---|
1303 | if (mp) {
|
---|
1304 | if (!(mp->flags & REV))
|
---|
1305 | goto invalid_argument;
|
---|
1306 | stty_state &= ~STTY_noargs;
|
---|
1307 | continue;
|
---|
1308 | }
|
---|
1309 | /* It is an option - parse it */
|
---|
1310 | i = 0;
|
---|
1311 | while (arg[++i]) {
|
---|
1312 | switch (arg[i]) {
|
---|
1313 | case 'a':
|
---|
1314 | stty_state |= STTY_verbose_output;
|
---|
1315 | output_func = do_display;
|
---|
1316 | display_all = 1;
|
---|
1317 | break;
|
---|
1318 | case 'g':
|
---|
1319 | stty_state |= STTY_recoverable_output;
|
---|
1320 | output_func = display_recoverable;
|
---|
1321 | break;
|
---|
1322 | case 'F':
|
---|
1323 | if (file_name)
|
---|
1324 | bb_error_msg_and_die("only one device may be specified");
|
---|
1325 | file_name = &arg[i+1]; /* "-Fdevice" ? */
|
---|
1326 | if (!file_name[0]) { /* nope, "-F device" */
|
---|
1327 | int p = k+1; /* argv[p] is argnext */
|
---|
1328 | file_name = argnext;
|
---|
1329 | if (!file_name)
|
---|
1330 | bb_error_msg_and_die(bb_msg_requires_arg, "-F");
|
---|
1331 | /* remove -F param from arg[vc] */
|
---|
1332 | while (argv[p]) {
|
---|
1333 | argv[p] = argv[p+1];
|
---|
1334 | ++p;
|
---|
1335 | }
|
---|
1336 | }
|
---|
1337 | goto end_option;
|
---|
1338 | default:
|
---|
1339 | goto invalid_argument;
|
---|
1340 | }
|
---|
1341 | }
|
---|
1342 | end_option:
|
---|
1343 | continue;
|
---|
1344 | }
|
---|
1345 |
|
---|
1346 | mp = find_mode(arg);
|
---|
1347 | if (mp) {
|
---|
1348 | stty_state &= ~STTY_noargs;
|
---|
1349 | continue;
|
---|
1350 | }
|
---|
1351 |
|
---|
1352 | cp = find_control(arg);
|
---|
1353 | if (cp) {
|
---|
1354 | if (!argnext)
|
---|
1355 | bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
---|
1356 | /* called for the side effect of xfunc death only */
|
---|
1357 | set_control_char_or_die(cp, argnext, &mode);
|
---|
1358 | stty_state &= ~STTY_noargs;
|
---|
1359 | ++k;
|
---|
1360 | continue;
|
---|
1361 | }
|
---|
1362 |
|
---|
1363 | param = find_param(arg);
|
---|
1364 | if (param & param_need_arg) {
|
---|
1365 | if (!argnext)
|
---|
1366 | bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
---|
1367 | ++k;
|
---|
1368 | }
|
---|
1369 |
|
---|
1370 | switch (param) {
|
---|
1371 | #ifdef __linux__
|
---|
1372 | case param_line:
|
---|
1373 | # ifndef TIOCGWINSZ
|
---|
1374 | xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
|
---|
1375 | break;
|
---|
1376 | # endif /* else fall-through */
|
---|
1377 | #endif
|
---|
1378 | #ifdef TIOCGWINSZ
|
---|
1379 | case param_rows:
|
---|
1380 | case param_cols:
|
---|
1381 | case param_columns:
|
---|
1382 | xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
|
---|
1383 | break;
|
---|
1384 | case param_size:
|
---|
1385 | #endif
|
---|
1386 | case param_speed:
|
---|
1387 | break;
|
---|
1388 | case param_ispeed:
|
---|
1389 | /* called for the side effect of xfunc death only */
|
---|
1390 | set_speed_or_die(input_speed, argnext, &mode);
|
---|
1391 | break;
|
---|
1392 | case param_ospeed:
|
---|
1393 | /* called for the side effect of xfunc death only */
|
---|
1394 | set_speed_or_die(output_speed, argnext, &mode);
|
---|
1395 | break;
|
---|
1396 | default:
|
---|
1397 | if (recover_mode(arg, &mode) == 1) break;
|
---|
1398 | if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) break;
|
---|
1399 | invalid_argument:
|
---|
1400 | bb_error_msg_and_die("invalid argument '%s'", arg);
|
---|
1401 | }
|
---|
1402 | stty_state &= ~STTY_noargs;
|
---|
1403 | }
|
---|
1404 |
|
---|
1405 | /* Specifying both -a and -g is an error */
|
---|
1406 | if ((stty_state & (STTY_verbose_output | STTY_recoverable_output)) ==
|
---|
1407 | (STTY_verbose_output | STTY_recoverable_output)
|
---|
1408 | ) {
|
---|
1409 | bb_error_msg_and_die("-a and -g are mutually exclusive");
|
---|
1410 | }
|
---|
1411 | /* Specifying -a or -g with non-options is an error */
|
---|
1412 | if ((stty_state & (STTY_verbose_output | STTY_recoverable_output))
|
---|
1413 | && !(stty_state & STTY_noargs)
|
---|
1414 | ) {
|
---|
1415 | bb_error_msg_and_die("modes may not be set when -a or -g is used");
|
---|
1416 | }
|
---|
1417 |
|
---|
1418 | /* Now it is safe to start doing things */
|
---|
1419 | if (file_name) {
|
---|
1420 | G.device_name = file_name;
|
---|
1421 | xmove_fd(xopen_nonblocking(G.device_name), STDIN_FILENO);
|
---|
1422 | ndelay_off(STDIN_FILENO);
|
---|
1423 | }
|
---|
1424 |
|
---|
1425 | /* Initialize to all zeroes so there is no risk memcmp will report a
|
---|
1426 | spurious difference in an uninitialized portion of the structure */
|
---|
1427 | memset(&mode, 0, sizeof(mode));
|
---|
1428 | if (tcgetattr(STDIN_FILENO, &mode))
|
---|
1429 | perror_on_device_and_die("%s");
|
---|
1430 |
|
---|
1431 | if (stty_state & (STTY_verbose_output | STTY_recoverable_output | STTY_noargs)) {
|
---|
1432 | get_terminal_width_height(STDOUT_FILENO, &G.max_col, NULL);
|
---|
1433 | output_func(&mode, display_all);
|
---|
1434 | return EXIT_SUCCESS;
|
---|
1435 | }
|
---|
1436 |
|
---|
1437 | /* Second pass: perform actions */
|
---|
1438 | k = 0;
|
---|
1439 | while (argv[++k]) {
|
---|
1440 | const struct mode_info *mp;
|
---|
1441 | const struct control_info *cp;
|
---|
1442 | const char *arg = argv[k];
|
---|
1443 | const char *argnext = argv[k+1];
|
---|
1444 | int param;
|
---|
1445 |
|
---|
1446 | if (arg[0] == '-') {
|
---|
1447 | mp = find_mode(arg+1);
|
---|
1448 | if (mp) {
|
---|
1449 | set_mode(mp, 1 /* reversed */, &mode);
|
---|
1450 | stty_state |= STTY_require_set_attr;
|
---|
1451 | }
|
---|
1452 | /* It is an option - already parsed. Skip it */
|
---|
1453 | continue;
|
---|
1454 | }
|
---|
1455 |
|
---|
1456 | mp = find_mode(arg);
|
---|
1457 | if (mp) {
|
---|
1458 | set_mode(mp, 0 /* non-reversed */, &mode);
|
---|
1459 | stty_state |= STTY_require_set_attr;
|
---|
1460 | continue;
|
---|
1461 | }
|
---|
1462 |
|
---|
1463 | cp = find_control(arg);
|
---|
1464 | if (cp) {
|
---|
1465 | ++k;
|
---|
1466 | set_control_char_or_die(cp, argnext, &mode);
|
---|
1467 | stty_state |= STTY_require_set_attr;
|
---|
1468 | continue;
|
---|
1469 | }
|
---|
1470 |
|
---|
1471 | param = find_param(arg);
|
---|
1472 | if (param & param_need_arg) {
|
---|
1473 | ++k;
|
---|
1474 | }
|
---|
1475 |
|
---|
1476 | switch (param) {
|
---|
1477 | #ifdef __linux__
|
---|
1478 | case param_line:
|
---|
1479 | mode.c_line = xatoul_sfx(argnext, stty_suffixes);
|
---|
1480 | stty_state |= STTY_require_set_attr;
|
---|
1481 | break;
|
---|
1482 | #endif
|
---|
1483 | #ifdef TIOCGWINSZ
|
---|
1484 | case param_cols:
|
---|
1485 | case param_columns:
|
---|
1486 | set_window_size(-1, xatoul_sfx(argnext, stty_suffixes));
|
---|
1487 | break;
|
---|
1488 | case param_size:
|
---|
1489 | display_window_size(0);
|
---|
1490 | break;
|
---|
1491 | case param_rows:
|
---|
1492 | set_window_size(xatoul_sfx(argnext, stty_suffixes), -1);
|
---|
1493 | break;
|
---|
1494 | #endif
|
---|
1495 | case param_speed:
|
---|
1496 | display_speed(&mode, 0);
|
---|
1497 | break;
|
---|
1498 | case param_ispeed:
|
---|
1499 | set_speed_or_die(input_speed, argnext, &mode);
|
---|
1500 | stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
---|
1501 | break;
|
---|
1502 | case param_ospeed:
|
---|
1503 | set_speed_or_die(output_speed, argnext, &mode);
|
---|
1504 | stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
---|
1505 | break;
|
---|
1506 | default:
|
---|
1507 | if (recover_mode(arg, &mode) == 1)
|
---|
1508 | stty_state |= STTY_require_set_attr;
|
---|
1509 | else /* true: if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) */{
|
---|
1510 | set_speed_or_die(both_speeds, arg, &mode);
|
---|
1511 | stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
---|
1512 | } /* else - impossible (caught in the first pass):
|
---|
1513 | bb_error_msg_and_die("invalid argument '%s'", arg); */
|
---|
1514 | }
|
---|
1515 | }
|
---|
1516 |
|
---|
1517 | if (stty_state & STTY_require_set_attr) {
|
---|
1518 | struct termios new_mode;
|
---|
1519 |
|
---|
1520 | if (tcsetattr(STDIN_FILENO, TCSADRAIN, &mode))
|
---|
1521 | perror_on_device_and_die("%s");
|
---|
1522 |
|
---|
1523 | /* POSIX (according to Zlotnick's book) tcsetattr returns zero if
|
---|
1524 | it performs *any* of the requested operations. This means it
|
---|
1525 | can report 'success' when it has actually failed to perform
|
---|
1526 | some proper subset of the requested operations. To detect
|
---|
1527 | this partial failure, get the current terminal attributes and
|
---|
1528 | compare them to the requested ones */
|
---|
1529 |
|
---|
1530 | /* Initialize to all zeroes so there is no risk memcmp will report a
|
---|
1531 | spurious difference in an uninitialized portion of the structure */
|
---|
1532 | memset(&new_mode, 0, sizeof(new_mode));
|
---|
1533 | if (tcgetattr(STDIN_FILENO, &new_mode))
|
---|
1534 | perror_on_device_and_die("%s");
|
---|
1535 |
|
---|
1536 | if (memcmp(&mode, &new_mode, sizeof(mode)) != 0) {
|
---|
1537 | #if CIBAUD
|
---|
1538 | /* SunOS 4.1.3 (at least) has the problem that after this sequence,
|
---|
1539 | tcgetattr (&m1); tcsetattr (&m1); tcgetattr (&m2);
|
---|
1540 | sometimes (m1 != m2). The only difference is in the four bits
|
---|
1541 | of the c_cflag field corresponding to the baud rate. To save
|
---|
1542 | Sun users a little confusion, don't report an error if this
|
---|
1543 | happens. But suppress the error only if we haven't tried to
|
---|
1544 | set the baud rate explicitly -- otherwise we'd never give an
|
---|
1545 | error for a true failure to set the baud rate */
|
---|
1546 |
|
---|
1547 | new_mode.c_cflag &= (~CIBAUD);
|
---|
1548 | if ((stty_state & STTY_speed_was_set)
|
---|
1549 | || memcmp(&mode, &new_mode, sizeof(mode)) != 0)
|
---|
1550 | #endif
|
---|
1551 | perror_on_device_and_die("%s: cannot perform all requested operations");
|
---|
1552 | }
|
---|
1553 | }
|
---|
1554 |
|
---|
1555 | return EXIT_SUCCESS;
|
---|
1556 | }
|
---|