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 the GPL v2 or later, see the file LICENSE in this tarball.
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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 | //#define TEST
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25 |
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26 | #include "busybox.h"
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27 | #include <stddef.h>
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28 | #include <termios.h>
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29 | #include <sys/ioctl.h>
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30 |
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31 | #include <sys/param.h>
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32 | #include <unistd.h>
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33 |
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34 | #ifndef STDIN_FILENO
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35 | # define STDIN_FILENO 0
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36 | #endif
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37 |
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38 | #ifndef STDOUT_FILENO
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39 | # define STDOUT_FILENO 1
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40 | #endif
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41 |
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42 | #include <stdlib.h>
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43 | #include <string.h>
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44 | #include <assert.h>
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45 | #include <ctype.h>
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46 | #include <errno.h>
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47 | #include <limits.h>
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48 | #include <fcntl.h>
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49 |
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50 | #define STREQ(a, b) (strcmp ((a), (b)) == 0)
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51 |
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52 |
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53 | #ifndef _POSIX_VDISABLE
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54 | # define _POSIX_VDISABLE ((unsigned char) 0)
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55 | #endif
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56 |
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57 | #define Control(c) ((c) & 0x1f)
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58 | /* Canonical values for control characters. */
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59 | #ifndef CINTR
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60 | # define CINTR Control ('c')
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61 | #endif
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62 | #ifndef CQUIT
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63 | # define CQUIT 28
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64 | #endif
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65 | #ifndef CERASE
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66 | # define CERASE 127
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67 | #endif
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68 | #ifndef CKILL
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69 | # define CKILL Control ('u')
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70 | #endif
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71 | #ifndef CEOF
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72 | # define CEOF Control ('d')
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73 | #endif
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74 | #ifndef CEOL
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75 | # define CEOL _POSIX_VDISABLE
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76 | #endif
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77 | #ifndef CSTART
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78 | # define CSTART Control ('q')
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79 | #endif
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80 | #ifndef CSTOP
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81 | # define CSTOP Control ('s')
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82 | #endif
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83 | #ifndef CSUSP
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84 | # define CSUSP Control ('z')
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85 | #endif
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86 | #if defined(VEOL2) && !defined(CEOL2)
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87 | # define CEOL2 _POSIX_VDISABLE
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88 | #endif
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89 | /* ISC renamed swtch to susp for termios, but we'll accept either name. */
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90 | #if defined(VSUSP) && !defined(VSWTCH)
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91 | # define VSWTCH VSUSP
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92 | # define CSWTCH CSUSP
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93 | #endif
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94 | #if defined(VSWTCH) && !defined(CSWTCH)
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95 | # define CSWTCH _POSIX_VDISABLE
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96 | #endif
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97 |
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98 | /* SunOS 5.3 loses (^Z doesn't work) if `swtch' is the same as `susp'.
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99 | So the default is to disable `swtch.' */
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100 | #if defined (__sparc__) && defined (__svr4__)
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101 | # undef CSWTCH
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102 | # define CSWTCH _POSIX_VDISABLE
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103 | #endif
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104 |
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105 | #if defined(VWERSE) && !defined (VWERASE) /* AIX-3.2.5 */
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106 | # define VWERASE VWERSE
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107 | #endif
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108 | #if defined(VDSUSP) && !defined (CDSUSP)
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109 | # define CDSUSP Control ('y')
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110 | #endif
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111 | #if !defined(VREPRINT) && defined(VRPRNT) /* Irix 4.0.5 */
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112 | # define VREPRINT VRPRNT
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113 | #endif
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114 | #if defined(VREPRINT) && !defined(CRPRNT)
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115 | # define CRPRNT Control ('r')
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116 | #endif
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117 | #if defined(VWERASE) && !defined(CWERASE)
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118 | # define CWERASE Control ('w')
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119 | #endif
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120 | #if defined(VLNEXT) && !defined(CLNEXT)
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121 | # define CLNEXT Control ('v')
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122 | #endif
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123 | #if defined(VDISCARD) && !defined(VFLUSHO)
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124 | # define VFLUSHO VDISCARD
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125 | #endif
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126 | #if defined(VFLUSH) && !defined(VFLUSHO) /* Ultrix 4.2 */
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127 | # define VFLUSHO VFLUSH
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128 | #endif
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129 | #if defined(CTLECH) && !defined(ECHOCTL) /* Ultrix 4.3 */
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130 | # define ECHOCTL CTLECH
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131 | #endif
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132 | #if defined(TCTLECH) && !defined(ECHOCTL) /* Ultrix 4.2 */
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133 | # define ECHOCTL TCTLECH
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134 | #endif
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135 | #if defined(CRTKIL) && !defined(ECHOKE) /* Ultrix 4.2 and 4.3 */
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136 | # define ECHOKE CRTKIL
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137 | #endif
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138 | #if defined(VFLUSHO) && !defined(CFLUSHO)
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139 | # define CFLUSHO Control ('o')
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140 | #endif
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141 | #if defined(VSTATUS) && !defined(CSTATUS)
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142 | # define CSTATUS Control ('t')
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143 | #endif
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144 |
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145 | /* Which speeds to set. */
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146 | enum speed_setting {
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147 | input_speed, output_speed, both_speeds
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148 | };
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149 |
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150 | /* Which member(s) of `struct termios' a mode uses. */
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151 | enum mode_type {
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152 | /* Do NOT change the order or values, as mode_type_flag()
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153 | * depends on them. */
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154 | control, input, output, local, combination
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155 | };
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156 |
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157 |
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158 | static const char evenp [] = "evenp";
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159 | static const char raw [] = "raw";
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160 | static const char stty_min [] = "min";
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161 | static const char stty_time [] = "time";
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162 | static const char stty_swtch[] = "swtch";
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163 | static const char stty_eol [] = "eol";
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164 | static const char stty_eof [] = "eof";
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165 | static const char parity [] = "parity";
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166 | static const char stty_oddp [] = "oddp";
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167 | static const char stty_nl [] = "nl";
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168 | static const char stty_ek [] = "ek";
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169 | static const char stty_sane [] = "sane";
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170 | static const char cbreak [] = "cbreak";
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171 | static const char stty_pass8[] = "pass8";
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172 | static const char litout [] = "litout";
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173 | static const char cooked [] = "cooked";
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174 | static const char decctlq [] = "decctlq";
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175 | static const char stty_tabs [] = "tabs";
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176 | static const char stty_lcase[] = "lcase";
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177 | static const char stty_LCASE[] = "LCASE";
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178 | static const char stty_crt [] = "crt";
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179 | static const char stty_dec [] = "dec";
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180 |
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181 |
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182 | /* Flags for `struct mode_info'. */
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183 | #define SANE_SET 1 /* Set in `sane' mode. */
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184 | #define SANE_UNSET 2 /* Unset in `sane' mode. */
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185 | #define REV 4 /* Can be turned off by prepending `-'. */
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186 | #define OMIT 8 /* Don't display value. */
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187 |
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188 | /* Each mode. */
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189 | struct mode_info {
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190 | const char *name; /* Name given on command line. */
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191 | /* enum mode_type type; */
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192 | char type; /* Which structure element to change. */
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193 | char flags; /* Setting and display options. */
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194 | unsigned short mask; /* Other bits to turn off for this mode. */
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195 | unsigned long bits; /* Bits to set for this mode. */
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196 | };
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197 |
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198 | #define MI_ENTRY(N,T,F,B,M) { N, T, F, M, B }
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199 |
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200 | static const struct mode_info mode_info[] = {
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201 | MI_ENTRY("parenb", control, REV, PARENB, 0 ),
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202 | MI_ENTRY("parodd", control, REV, PARODD, 0 ),
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203 | MI_ENTRY("cs5", control, 0, CS5, CSIZE),
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204 | MI_ENTRY("cs6", control, 0, CS6, CSIZE),
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205 | MI_ENTRY("cs7", control, 0, CS7, CSIZE),
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206 | MI_ENTRY("cs8", control, 0, CS8, CSIZE),
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207 | MI_ENTRY("hupcl", control, REV, HUPCL, 0 ),
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208 | MI_ENTRY("hup", control, REV | OMIT, HUPCL, 0 ),
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209 | MI_ENTRY("cstopb", control, REV, CSTOPB, 0 ),
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210 | MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 ),
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211 | MI_ENTRY("clocal", control, REV, CLOCAL, 0 ),
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212 | #ifdef CRTSCTS
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213 | MI_ENTRY("crtscts", control, REV, CRTSCTS, 0 ),
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214 | #endif
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215 | MI_ENTRY("ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 ),
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216 | MI_ENTRY("brkint", input, SANE_SET | REV, BRKINT, 0 ),
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217 | MI_ENTRY("ignpar", input, REV, IGNPAR, 0 ),
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218 | MI_ENTRY("parmrk", input, REV, PARMRK, 0 ),
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219 | MI_ENTRY("inpck", input, REV, INPCK, 0 ),
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220 | MI_ENTRY("istrip", input, REV, ISTRIP, 0 ),
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221 | MI_ENTRY("inlcr", input, SANE_UNSET | REV, INLCR, 0 ),
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222 | MI_ENTRY("igncr", input, SANE_UNSET | REV, IGNCR, 0 ),
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223 | MI_ENTRY("icrnl", input, SANE_SET | REV, ICRNL, 0 ),
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224 | MI_ENTRY("ixon", input, REV, IXON, 0 ),
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225 | MI_ENTRY("ixoff", input, SANE_UNSET | REV, IXOFF, 0 ),
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226 | MI_ENTRY("tandem", input, REV | OMIT, IXOFF, 0 ),
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227 | #ifdef IUCLC
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228 | MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 ),
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229 | #endif
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230 | #ifdef IXANY
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231 | MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 ),
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232 | #endif
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233 | #ifdef IMAXBEL
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234 | MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 ),
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235 | #endif
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236 | MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 ),
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237 | #ifdef OLCUC
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238 | MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 ),
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239 | #endif
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240 | #ifdef OCRNL
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241 | MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 ),
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242 | #endif
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243 | #ifdef ONLCR
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244 | MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 ),
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245 | #endif
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246 | #ifdef ONOCR
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247 | MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 ),
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248 | #endif
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249 | #ifdef ONLRET
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250 | MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 ),
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251 | #endif
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252 | #ifdef OFILL
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253 | MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 ),
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254 | #endif
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255 | #ifdef OFDEL
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256 | MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 ),
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257 | #endif
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258 | #ifdef NLDLY
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259 | MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY),
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260 | MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY),
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261 | #endif
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262 | #ifdef CRDLY
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263 | MI_ENTRY("cr3", output, SANE_UNSET, CR3, CRDLY),
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264 | MI_ENTRY("cr2", output, SANE_UNSET, CR2, CRDLY),
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265 | MI_ENTRY("cr1", output, SANE_UNSET, CR1, CRDLY),
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266 | MI_ENTRY("cr0", output, SANE_SET, CR0, CRDLY),
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267 | #endif
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268 |
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269 | #ifdef TABDLY
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270 | MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY),
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271 | MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY),
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272 | MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY),
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273 | MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY),
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274 | #else
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275 | # ifdef OXTABS
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276 | MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 ),
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277 | # endif
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278 | #endif
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279 |
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280 | #ifdef BSDLY
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281 | MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY),
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282 | MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY),
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283 | #endif
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284 | #ifdef VTDLY
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285 | MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY),
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286 | MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY),
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287 | #endif
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288 | #ifdef FFDLY
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289 | MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY),
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290 | MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY),
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291 | #endif
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292 | MI_ENTRY("isig", local, SANE_SET | REV, ISIG, 0 ),
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293 | MI_ENTRY("icanon", local, SANE_SET | REV, ICANON, 0 ),
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294 | #ifdef IEXTEN
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295 | MI_ENTRY("iexten", local, SANE_SET | REV, IEXTEN, 0 ),
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296 | #endif
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297 | MI_ENTRY("echo", local, SANE_SET | REV, ECHO, 0 ),
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298 | MI_ENTRY("echoe", local, SANE_SET | REV, ECHOE, 0 ),
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299 | MI_ENTRY("crterase", local, REV | OMIT, ECHOE, 0 ),
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300 | MI_ENTRY("echok", local, SANE_SET | REV, ECHOK, 0 ),
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301 | MI_ENTRY("echonl", local, SANE_UNSET | REV, ECHONL, 0 ),
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302 | MI_ENTRY("noflsh", local, SANE_UNSET | REV, NOFLSH, 0 ),
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303 | #ifdef XCASE
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304 | MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 ),
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305 | #endif
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306 | #ifdef TOSTOP
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307 | MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 ),
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308 | #endif
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309 | #ifdef ECHOPRT
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310 | MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 ),
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311 | MI_ENTRY("prterase", local, REV | OMIT, ECHOPRT, 0 ),
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312 | #endif
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313 | #ifdef ECHOCTL
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314 | MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 ),
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315 | MI_ENTRY("ctlecho", local, REV | OMIT, ECHOCTL, 0 ),
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316 | #endif
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317 | #ifdef ECHOKE
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318 | MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 ),
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319 | MI_ENTRY("crtkill", local, REV | OMIT, ECHOKE, 0 ),
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320 | #endif
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321 | MI_ENTRY(evenp, combination, REV | OMIT, 0, 0 ),
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322 | MI_ENTRY(parity, combination, REV | OMIT, 0, 0 ),
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323 | MI_ENTRY(stty_oddp, combination, REV | OMIT, 0, 0 ),
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324 | MI_ENTRY(stty_nl, combination, REV | OMIT, 0, 0 ),
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325 | MI_ENTRY(stty_ek, combination, OMIT, 0, 0 ),
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326 | MI_ENTRY(stty_sane, combination, OMIT, 0, 0 ),
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327 | MI_ENTRY(cooked, combination, REV | OMIT, 0, 0 ),
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328 | MI_ENTRY(raw, combination, REV | OMIT, 0, 0 ),
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329 | MI_ENTRY(stty_pass8, combination, REV | OMIT, 0, 0 ),
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330 | MI_ENTRY(litout, combination, REV | OMIT, 0, 0 ),
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331 | MI_ENTRY(cbreak, combination, REV | OMIT, 0, 0 ),
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332 | #ifdef IXANY
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333 | MI_ENTRY(decctlq, combination, REV | OMIT, 0, 0 ),
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334 | #endif
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335 | #if defined (TABDLY) || defined (OXTABS)
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336 | MI_ENTRY(stty_tabs, combination, REV | OMIT, 0, 0 ),
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337 | #endif
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338 | #if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
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339 | MI_ENTRY(stty_lcase, combination, REV | OMIT, 0, 0 ),
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340 | MI_ENTRY(stty_LCASE, combination, REV | OMIT, 0, 0 ),
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341 | #endif
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342 | MI_ENTRY(stty_crt, combination, OMIT, 0, 0 ),
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343 | MI_ENTRY(stty_dec, combination, OMIT, 0, 0 ),
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344 | };
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345 |
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346 | enum {
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347 | NUM_mode_info =
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348 | (sizeof(mode_info) / sizeof(struct mode_info))
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349 | };
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350 |
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351 | /* Control character settings. */
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352 | struct control_info {
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353 | const char *name; /* Name given on command line. */
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354 | unsigned char saneval; /* Value to set for `stty sane'. */
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355 | unsigned char offset; /* Offset in c_cc. */
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356 | };
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357 |
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358 | /* Control characters. */
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359 |
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360 | static const struct control_info control_info[] = {
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361 | {"intr", CINTR, VINTR},
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362 | {"quit", CQUIT, VQUIT},
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363 | {"erase", CERASE, VERASE},
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364 | {"kill", CKILL, VKILL},
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365 | {stty_eof, CEOF, VEOF},
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366 | {stty_eol, CEOL, VEOL},
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367 | #ifdef VEOL2
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368 | {"eol2", CEOL2, VEOL2},
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369 | #endif
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370 | #ifdef VSWTCH
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371 | {stty_swtch, CSWTCH, VSWTCH},
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372 | #endif
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373 | {"start", CSTART, VSTART},
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374 | {"stop", CSTOP, VSTOP},
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375 | {"susp", CSUSP, VSUSP},
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376 | #ifdef VDSUSP
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377 | {"dsusp", CDSUSP, VDSUSP},
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378 | #endif
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379 | #ifdef VREPRINT
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380 | {"rprnt", CRPRNT, VREPRINT},
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381 | #endif
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382 | #ifdef VWERASE
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383 | {"werase", CWERASE, VWERASE},
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384 | #endif
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385 | #ifdef VLNEXT
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386 | {"lnext", CLNEXT, VLNEXT},
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387 | #endif
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388 | #ifdef VFLUSHO
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389 | {"flush", CFLUSHO, VFLUSHO},
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390 | #endif
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391 | #ifdef VSTATUS
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392 | {"status", CSTATUS, VSTATUS},
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393 | #endif
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394 | /* These must be last because of the display routines. */
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395 | {stty_min, 1, VMIN},
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396 | {stty_time, 0, VTIME},
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397 | };
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398 |
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399 | enum {
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400 | NUM_control_info =
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401 | (sizeof(control_info) / sizeof(struct control_info))
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402 | };
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403 |
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404 | #define EMT(t) ((enum mode_type)(t))
|
---|
405 |
|
---|
406 | static const char * visible(unsigned int ch);
|
---|
407 | static int recover_mode(char *arg, struct termios *mode);
|
---|
408 | static int screen_columns(void);
|
---|
409 | static int set_mode(const struct mode_info *info,
|
---|
410 | int reversed, struct termios *mode);
|
---|
411 | static speed_t string_to_baud(const char *arg);
|
---|
412 | static tcflag_t* mode_type_flag(enum mode_type type, struct termios *mode);
|
---|
413 | static void display_all(struct termios *mode);
|
---|
414 | static void display_changed(struct termios *mode);
|
---|
415 | static void display_recoverable(struct termios *mode);
|
---|
416 | static void display_speed(struct termios *mode, int fancy);
|
---|
417 | static void display_window_size(int fancy);
|
---|
418 | static void sane_mode(struct termios *mode);
|
---|
419 | static void set_control_char(const struct control_info *info,
|
---|
420 | const char *arg, struct termios *mode);
|
---|
421 | static void set_speed(enum speed_setting type,
|
---|
422 | const char *arg, struct termios *mode);
|
---|
423 | static void set_window_size(int rows, int cols);
|
---|
424 |
|
---|
425 | static const char *device_name;
|
---|
426 |
|
---|
427 | static ATTRIBUTE_NORETURN void perror_on_device(const char *fmt)
|
---|
428 | {
|
---|
429 | bb_perror_msg_and_die(fmt, device_name);
|
---|
430 | }
|
---|
431 |
|
---|
432 |
|
---|
433 | /* The width of the screen, for output wrapping. */
|
---|
434 | static int max_col;
|
---|
435 |
|
---|
436 | /* Current position, to know when to wrap. */
|
---|
437 | static int current_col;
|
---|
438 |
|
---|
439 | /* Print format string MESSAGE and optional args.
|
---|
440 | Wrap to next line first if it won't fit.
|
---|
441 | Print a space first unless MESSAGE will start a new line. */
|
---|
442 |
|
---|
443 | static void wrapf(const char *message, ...)
|
---|
444 | {
|
---|
445 | va_list args;
|
---|
446 | char buf[1024]; /* Plenty long for our needs. */
|
---|
447 | int buflen;
|
---|
448 |
|
---|
449 | va_start(args, message);
|
---|
450 | vsprintf(buf, message, args);
|
---|
451 | va_end(args);
|
---|
452 | buflen = strlen(buf);
|
---|
453 | if (current_col + (current_col > 0) + buflen >= max_col) {
|
---|
454 | putchar('\n');
|
---|
455 | current_col = 0;
|
---|
456 | }
|
---|
457 | if (current_col > 0) {
|
---|
458 | putchar(' ');
|
---|
459 | current_col++;
|
---|
460 | }
|
---|
461 | fputs(buf, stdout);
|
---|
462 | current_col += buflen;
|
---|
463 | }
|
---|
464 |
|
---|
465 | static const struct suffix_mult stty_suffixes[] = {
|
---|
466 | {"b", 512 },
|
---|
467 | {"k", 1024},
|
---|
468 | {"B", 1024},
|
---|
469 | {NULL, 0 }
|
---|
470 | };
|
---|
471 |
|
---|
472 | #ifndef TEST
|
---|
473 | int stty_main(int argc, char **argv)
|
---|
474 | #else
|
---|
475 | int main(int argc, char **argv)
|
---|
476 | #endif
|
---|
477 | {
|
---|
478 | struct termios mode;
|
---|
479 | void (*output_func)(struct termios *);
|
---|
480 | int optc;
|
---|
481 | int require_set_attr;
|
---|
482 | int speed_was_set;
|
---|
483 | int verbose_output;
|
---|
484 | int recoverable_output;
|
---|
485 | int k;
|
---|
486 | int noargs = 1;
|
---|
487 | char * file_name = NULL;
|
---|
488 |
|
---|
489 | output_func = display_changed;
|
---|
490 | verbose_output = 0;
|
---|
491 | recoverable_output = 0;
|
---|
492 |
|
---|
493 | /* Don't print error messages for unrecognized options. */
|
---|
494 | opterr = 0;
|
---|
495 |
|
---|
496 | while ((optc = getopt(argc, argv, "agF:")) != -1) {
|
---|
497 | switch (optc) {
|
---|
498 | case 'a':
|
---|
499 | verbose_output = 1;
|
---|
500 | output_func = display_all;
|
---|
501 | break;
|
---|
502 |
|
---|
503 | case 'g':
|
---|
504 | recoverable_output = 1;
|
---|
505 | output_func = display_recoverable;
|
---|
506 | break;
|
---|
507 |
|
---|
508 | case 'F':
|
---|
509 | if (file_name)
|
---|
510 | bb_error_msg_and_die("only one device may be specified");
|
---|
511 | file_name = optarg;
|
---|
512 | break;
|
---|
513 |
|
---|
514 | default: /* unrecognized option */
|
---|
515 | noargs = 0;
|
---|
516 | break;
|
---|
517 | }
|
---|
518 |
|
---|
519 | if (noargs == 0)
|
---|
520 | break;
|
---|
521 | }
|
---|
522 |
|
---|
523 | if (optind < argc)
|
---|
524 | noargs = 0;
|
---|
525 |
|
---|
526 | /* Specifying both -a and -g gets an error. */
|
---|
527 | if (verbose_output & recoverable_output)
|
---|
528 | bb_error_msg_and_die ("verbose and stty-readable output styles are mutually exclusive");
|
---|
529 |
|
---|
530 | /* Specifying any other arguments with -a or -g gets an error. */
|
---|
531 | if (~noargs & (verbose_output | recoverable_output))
|
---|
532 | bb_error_msg_and_die ("modes may not be set when specifying an output style");
|
---|
533 |
|
---|
534 | /* FIXME: it'd be better not to open the file until we've verified
|
---|
535 | that all arguments are valid. Otherwise, we could end up doing
|
---|
536 | only some of the requested operations and then failing, probably
|
---|
537 | leaving things in an undesirable state. */
|
---|
538 |
|
---|
539 | if (file_name) {
|
---|
540 | int fdflags;
|
---|
541 |
|
---|
542 | device_name = file_name;
|
---|
543 | fclose(stdin);
|
---|
544 | bb_xopen(device_name, O_RDONLY | O_NONBLOCK);
|
---|
545 | if ((fdflags = fcntl(STDIN_FILENO, F_GETFL)) == -1
|
---|
546 | || fcntl(STDIN_FILENO, F_SETFL, fdflags & ~O_NONBLOCK) < 0)
|
---|
547 | perror_on_device("%s: couldn't reset non-blocking mode");
|
---|
548 | } else {
|
---|
549 | device_name = bb_msg_standard_input;
|
---|
550 | }
|
---|
551 |
|
---|
552 | /* Initialize to all zeroes so there is no risk memcmp will report a
|
---|
553 | spurious difference in an uninitialized portion of the structure. */
|
---|
554 | memset(&mode, 0, sizeof(mode));
|
---|
555 | if (tcgetattr(STDIN_FILENO, &mode))
|
---|
556 | perror_on_device("%s");
|
---|
557 |
|
---|
558 | if (verbose_output | recoverable_output | noargs) {
|
---|
559 | max_col = screen_columns();
|
---|
560 | current_col = 0;
|
---|
561 | output_func(&mode);
|
---|
562 | return EXIT_SUCCESS;
|
---|
563 | }
|
---|
564 |
|
---|
565 | speed_was_set = 0;
|
---|
566 | require_set_attr = 0;
|
---|
567 | k = 0;
|
---|
568 | while (++k < argc) {
|
---|
569 | int match_found = 0;
|
---|
570 | int reversed = 0;
|
---|
571 | int i;
|
---|
572 |
|
---|
573 | if (argv[k][0] == '-') {
|
---|
574 | char *find_dev_opt;
|
---|
575 |
|
---|
576 | ++argv[k];
|
---|
577 |
|
---|
578 | /* Handle "-a", "-ag", "-aF/dev/foo", "-aF /dev/foo", etc.
|
---|
579 | Find the options that have been parsed. This is really
|
---|
580 | gross, but it's needed because stty SETTINGS look like options to
|
---|
581 | getopt(), so we need to work around things in a really horrible
|
---|
582 | way. If any new options are ever added to stty, the short option
|
---|
583 | MUST NOT be a letter which is the first letter of one of the
|
---|
584 | possible stty settings.
|
---|
585 | */
|
---|
586 | find_dev_opt = strchr(argv[k], 'F'); /* find -*F* */
|
---|
587 | if(find_dev_opt) {
|
---|
588 | if(find_dev_opt[1]==0) /* -*F /dev/foo */
|
---|
589 | k++; /* skip /dev/foo */
|
---|
590 | continue; /* else -*F/dev/foo - no skip */
|
---|
591 | }
|
---|
592 | if(argv[k][0]=='a' || argv[k][0]=='g')
|
---|
593 | continue;
|
---|
594 | /* Is not options - is reverse params */
|
---|
595 | reversed = 1;
|
---|
596 | }
|
---|
597 | for (i = 0; i < NUM_mode_info; ++i)
|
---|
598 | if (STREQ(argv[k], mode_info[i].name)) {
|
---|
599 | match_found = set_mode(&mode_info[i], reversed, &mode);
|
---|
600 | require_set_attr = 1;
|
---|
601 | break;
|
---|
602 | }
|
---|
603 |
|
---|
604 | if (match_found == 0 && reversed)
|
---|
605 | bb_error_msg_and_die("invalid argument `%s'", --argv[k]);
|
---|
606 |
|
---|
607 | if (match_found == 0)
|
---|
608 | for (i = 0; i < NUM_control_info; ++i)
|
---|
609 | if (STREQ(argv[k], control_info[i].name)) {
|
---|
610 | if (k == argc - 1)
|
---|
611 | bb_error_msg_and_die(bb_msg_requires_arg, argv[k]);
|
---|
612 | match_found = 1;
|
---|
613 | ++k;
|
---|
614 | set_control_char(&control_info[i], argv[k], &mode);
|
---|
615 | require_set_attr = 1;
|
---|
616 | break;
|
---|
617 | }
|
---|
618 |
|
---|
619 | if (match_found == 0) {
|
---|
620 | if (STREQ(argv[k], "ispeed")) {
|
---|
621 | if (k == argc - 1)
|
---|
622 | bb_error_msg_and_die(bb_msg_requires_arg, argv[k]);
|
---|
623 | ++k;
|
---|
624 | set_speed(input_speed, argv[k], &mode);
|
---|
625 | speed_was_set = 1;
|
---|
626 | require_set_attr = 1;
|
---|
627 | } else if (STREQ(argv[k], "ospeed")) {
|
---|
628 | if (k == argc - 1)
|
---|
629 | bb_error_msg_and_die(bb_msg_requires_arg, argv[k]);
|
---|
630 | ++k;
|
---|
631 | set_speed(output_speed, argv[k], &mode);
|
---|
632 | speed_was_set = 1;
|
---|
633 | require_set_attr = 1;
|
---|
634 | }
|
---|
635 | #ifdef TIOCGWINSZ
|
---|
636 | else if (STREQ(argv[k], "rows")) {
|
---|
637 | if (k == argc - 1)
|
---|
638 | bb_error_msg_and_die(bb_msg_requires_arg, argv[k]);
|
---|
639 | ++k;
|
---|
640 | set_window_size((int) bb_xparse_number(argv[k], stty_suffixes),
|
---|
641 | -1);
|
---|
642 | } else if (STREQ(argv[k], "cols") || STREQ(argv[k], "columns")) {
|
---|
643 | if (k == argc - 1)
|
---|
644 | bb_error_msg_and_die(bb_msg_requires_arg, argv[k]);
|
---|
645 | ++k;
|
---|
646 | set_window_size(-1,
|
---|
647 | (int) bb_xparse_number(argv[k], stty_suffixes));
|
---|
648 | } else if (STREQ(argv[k], "size")) {
|
---|
649 | max_col = screen_columns();
|
---|
650 | current_col = 0;
|
---|
651 | display_window_size(0);
|
---|
652 | }
|
---|
653 | #endif
|
---|
654 | #ifdef HAVE_C_LINE
|
---|
655 | else if (STREQ(argv[k], "line")) {
|
---|
656 | if (k == argc - 1)
|
---|
657 | bb_error_msg_and_die(bb_msg_requires_arg, argv[k]);
|
---|
658 | ++k;
|
---|
659 | mode.c_line = bb_xparse_number(argv[k], stty_suffixes);
|
---|
660 | require_set_attr = 1;
|
---|
661 | }
|
---|
662 | #endif
|
---|
663 | else if (STREQ(argv[k], "speed")) {
|
---|
664 | max_col = screen_columns();
|
---|
665 | display_speed(&mode, 0);
|
---|
666 | } else if (recover_mode(argv[k], &mode) == 1)
|
---|
667 | require_set_attr = 1;
|
---|
668 | else if (string_to_baud(argv[k]) != (speed_t) - 1) {
|
---|
669 | set_speed(both_speeds, argv[k], &mode);
|
---|
670 | speed_was_set = 1;
|
---|
671 | require_set_attr = 1;
|
---|
672 | } else
|
---|
673 | bb_error_msg_and_die("invalid argument `%s'", argv[k]);
|
---|
674 | }
|
---|
675 | }
|
---|
676 |
|
---|
677 | if (require_set_attr) {
|
---|
678 | struct termios new_mode;
|
---|
679 |
|
---|
680 | if (tcsetattr(STDIN_FILENO, TCSADRAIN, &mode))
|
---|
681 | perror_on_device("%s");
|
---|
682 |
|
---|
683 | /* POSIX (according to Zlotnick's book) tcsetattr returns zero if
|
---|
684 | it performs *any* of the requested operations. This means it
|
---|
685 | can report `success' when it has actually failed to perform
|
---|
686 | some proper subset of the requested operations. To detect
|
---|
687 | this partial failure, get the current terminal attributes and
|
---|
688 | compare them to the requested ones. */
|
---|
689 |
|
---|
690 | /* Initialize to all zeroes so there is no risk memcmp will report a
|
---|
691 | spurious difference in an uninitialized portion of the structure. */
|
---|
692 | memset(&new_mode, 0, sizeof(new_mode));
|
---|
693 | if (tcgetattr(STDIN_FILENO, &new_mode))
|
---|
694 | perror_on_device("%s");
|
---|
695 |
|
---|
696 | /* Normally, one shouldn't use memcmp to compare structures that
|
---|
697 | may have `holes' containing uninitialized data, but we have been
|
---|
698 | careful to initialize the storage of these two variables to all
|
---|
699 | zeroes. One might think it more efficient simply to compare the
|
---|
700 | modified fields, but that would require enumerating those fields --
|
---|
701 | and not all systems have the same fields in this structure. */
|
---|
702 |
|
---|
703 | if (memcmp(&mode, &new_mode, sizeof(mode)) != 0) {
|
---|
704 | #ifdef CIBAUD
|
---|
705 | /* SunOS 4.1.3 (at least) has the problem that after this sequence,
|
---|
706 | tcgetattr (&m1); tcsetattr (&m1); tcgetattr (&m2);
|
---|
707 | sometimes (m1 != m2). The only difference is in the four bits
|
---|
708 | of the c_cflag field corresponding to the baud rate. To save
|
---|
709 | Sun users a little confusion, don't report an error if this
|
---|
710 | happens. But suppress the error only if we haven't tried to
|
---|
711 | set the baud rate explicitly -- otherwise we'd never give an
|
---|
712 | error for a true failure to set the baud rate. */
|
---|
713 |
|
---|
714 | new_mode.c_cflag &= (~CIBAUD);
|
---|
715 | if (speed_was_set || memcmp(&mode, &new_mode, sizeof(mode)) != 0)
|
---|
716 | #endif
|
---|
717 | perror_on_device ("%s: unable to perform all requested operations");
|
---|
718 | }
|
---|
719 | }
|
---|
720 |
|
---|
721 | return EXIT_SUCCESS;
|
---|
722 | }
|
---|
723 |
|
---|
724 | /* Return 0 if not applied because not reversible; otherwise return 1. */
|
---|
725 |
|
---|
726 | static int
|
---|
727 | set_mode(const struct mode_info *info, int reversed, struct termios *mode)
|
---|
728 | {
|
---|
729 | tcflag_t *bitsp;
|
---|
730 |
|
---|
731 | if (reversed && (info->flags & REV) == 0)
|
---|
732 | return 0;
|
---|
733 |
|
---|
734 | bitsp = mode_type_flag(EMT(info->type), mode);
|
---|
735 |
|
---|
736 | if (bitsp == NULL) {
|
---|
737 | /* Combination mode. */
|
---|
738 | if (info->name == evenp || info->name == parity) {
|
---|
739 | if (reversed)
|
---|
740 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
741 | else
|
---|
742 | mode->c_cflag =
|
---|
743 | (mode->c_cflag & ~PARODD & ~CSIZE) | PARENB | CS7;
|
---|
744 | } else if (info->name == stty_oddp) {
|
---|
745 | if (reversed)
|
---|
746 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
747 | else
|
---|
748 | mode->c_cflag =
|
---|
749 | (mode->c_cflag & ~CSIZE) | CS7 | PARODD | PARENB;
|
---|
750 | } else if (info->name == stty_nl) {
|
---|
751 | if (reversed) {
|
---|
752 | mode->c_iflag = (mode->c_iflag | ICRNL) & ~INLCR & ~IGNCR;
|
---|
753 | mode->c_oflag = (mode->c_oflag
|
---|
754 | #ifdef ONLCR
|
---|
755 | | ONLCR
|
---|
756 | #endif
|
---|
757 | )
|
---|
758 | #ifdef OCRNL
|
---|
759 | & ~OCRNL
|
---|
760 | #endif
|
---|
761 | #ifdef ONLRET
|
---|
762 | & ~ONLRET
|
---|
763 | #endif
|
---|
764 | ;
|
---|
765 | } else {
|
---|
766 | mode->c_iflag = mode->c_iflag & ~ICRNL;
|
---|
767 | #ifdef ONLCR
|
---|
768 | mode->c_oflag = mode->c_oflag & ~ONLCR;
|
---|
769 | #endif
|
---|
770 | }
|
---|
771 | } else if (info->name == stty_ek) {
|
---|
772 | mode->c_cc[VERASE] = CERASE;
|
---|
773 | mode->c_cc[VKILL] = CKILL;
|
---|
774 | } else if (info->name == stty_sane)
|
---|
775 | sane_mode(mode);
|
---|
776 | else if (info->name == cbreak) {
|
---|
777 | if (reversed)
|
---|
778 | mode->c_lflag |= ICANON;
|
---|
779 | else
|
---|
780 | mode->c_lflag &= ~ICANON;
|
---|
781 | } else if (info->name == stty_pass8) {
|
---|
782 | if (reversed) {
|
---|
783 | mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
|
---|
784 | mode->c_iflag |= ISTRIP;
|
---|
785 | } else {
|
---|
786 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
787 | mode->c_iflag &= ~ISTRIP;
|
---|
788 | }
|
---|
789 | } else if (info->name == litout) {
|
---|
790 | if (reversed) {
|
---|
791 | mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
|
---|
792 | mode->c_iflag |= ISTRIP;
|
---|
793 | mode->c_oflag |= OPOST;
|
---|
794 | } else {
|
---|
795 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
796 | mode->c_iflag &= ~ISTRIP;
|
---|
797 | mode->c_oflag &= ~OPOST;
|
---|
798 | }
|
---|
799 | } else if (info->name == raw || info->name == cooked) {
|
---|
800 | if ((info->name[0] == 'r' && reversed)
|
---|
801 | || (info->name[0] == 'c' && !reversed)) {
|
---|
802 | /* Cooked mode. */
|
---|
803 | mode->c_iflag |= BRKINT | IGNPAR | ISTRIP | ICRNL | IXON;
|
---|
804 | mode->c_oflag |= OPOST;
|
---|
805 | mode->c_lflag |= ISIG | ICANON;
|
---|
806 | #if VMIN == VEOF
|
---|
807 | mode->c_cc[VEOF] = CEOF;
|
---|
808 | #endif
|
---|
809 | #if VTIME == VEOL
|
---|
810 | mode->c_cc[VEOL] = CEOL;
|
---|
811 | #endif
|
---|
812 | } else {
|
---|
813 | /* Raw mode. */
|
---|
814 | mode->c_iflag = 0;
|
---|
815 | mode->c_oflag &= ~OPOST;
|
---|
816 | mode->c_lflag &= ~(ISIG | ICANON
|
---|
817 | #ifdef XCASE
|
---|
818 | | XCASE
|
---|
819 | #endif
|
---|
820 | );
|
---|
821 | mode->c_cc[VMIN] = 1;
|
---|
822 | mode->c_cc[VTIME] = 0;
|
---|
823 | }
|
---|
824 | }
|
---|
825 | #ifdef IXANY
|
---|
826 | else if (info->name == decctlq) {
|
---|
827 | if (reversed)
|
---|
828 | mode->c_iflag |= IXANY;
|
---|
829 | else
|
---|
830 | mode->c_iflag &= ~IXANY;
|
---|
831 | }
|
---|
832 | #endif
|
---|
833 | #ifdef TABDLY
|
---|
834 | else if (info->name == stty_tabs) {
|
---|
835 | if (reversed)
|
---|
836 | mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
|
---|
837 | else
|
---|
838 | mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
|
---|
839 | }
|
---|
840 | #else
|
---|
841 | # ifdef OXTABS
|
---|
842 | else if (info->name == stty_tabs) {
|
---|
843 | if (reversed)
|
---|
844 | mode->c_oflag = mode->c_oflag | OXTABS;
|
---|
845 | else
|
---|
846 | mode->c_oflag = mode->c_oflag & ~OXTABS;
|
---|
847 | }
|
---|
848 | # endif
|
---|
849 | #endif
|
---|
850 | #if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
|
---|
851 | else if (info->name == stty_lcase || info->name == stty_LCASE) {
|
---|
852 | if (reversed) {
|
---|
853 | mode->c_lflag &= ~XCASE;
|
---|
854 | mode->c_iflag &= ~IUCLC;
|
---|
855 | mode->c_oflag &= ~OLCUC;
|
---|
856 | } else {
|
---|
857 | mode->c_lflag |= XCASE;
|
---|
858 | mode->c_iflag |= IUCLC;
|
---|
859 | mode->c_oflag |= OLCUC;
|
---|
860 | }
|
---|
861 | }
|
---|
862 | #endif
|
---|
863 | else if (info->name == stty_crt)
|
---|
864 | mode->c_lflag |= ECHOE
|
---|
865 | #ifdef ECHOCTL
|
---|
866 | | ECHOCTL
|
---|
867 | #endif
|
---|
868 | #ifdef ECHOKE
|
---|
869 | | ECHOKE
|
---|
870 | #endif
|
---|
871 | ;
|
---|
872 | else if (info->name == stty_dec) {
|
---|
873 | mode->c_cc[VINTR] = 3; /* ^C */
|
---|
874 | mode->c_cc[VERASE] = 127; /* DEL */
|
---|
875 | mode->c_cc[VKILL] = 21; /* ^U */
|
---|
876 | mode->c_lflag |= ECHOE
|
---|
877 | #ifdef ECHOCTL
|
---|
878 | | ECHOCTL
|
---|
879 | #endif
|
---|
880 | #ifdef ECHOKE
|
---|
881 | | ECHOKE
|
---|
882 | #endif
|
---|
883 | ;
|
---|
884 | #ifdef IXANY
|
---|
885 | mode->c_iflag &= ~IXANY;
|
---|
886 | #endif
|
---|
887 | }
|
---|
888 | } else if (reversed)
|
---|
889 | *bitsp = *bitsp & ~((unsigned long)info->mask) & ~info->bits;
|
---|
890 | else
|
---|
891 | *bitsp = (*bitsp & ~((unsigned long)info->mask)) | info->bits;
|
---|
892 |
|
---|
893 | return 1;
|
---|
894 | }
|
---|
895 |
|
---|
896 | static void
|
---|
897 | set_control_char(const struct control_info *info, const char *arg,
|
---|
898 | struct termios *mode)
|
---|
899 | {
|
---|
900 | unsigned char value;
|
---|
901 |
|
---|
902 | if (info->name == stty_min || info->name == stty_time)
|
---|
903 | value = bb_xparse_number(arg, stty_suffixes);
|
---|
904 | else if (arg[0] == '\0' || arg[1] == '\0')
|
---|
905 | value = arg[0];
|
---|
906 | else if (STREQ(arg, "^-") || STREQ(arg, "undef"))
|
---|
907 | value = _POSIX_VDISABLE;
|
---|
908 | else if (arg[0] == '^' && arg[1] != '\0') { /* Ignore any trailing junk. */
|
---|
909 | if (arg[1] == '?')
|
---|
910 | value = 127;
|
---|
911 | else
|
---|
912 | value = arg[1] & ~0140; /* Non-letters get weird results. */
|
---|
913 | } else
|
---|
914 | value = bb_xparse_number(arg, stty_suffixes);
|
---|
915 | mode->c_cc[info->offset] = value;
|
---|
916 | }
|
---|
917 |
|
---|
918 | static void
|
---|
919 | set_speed(enum speed_setting type, const char *arg, struct termios *mode)
|
---|
920 | {
|
---|
921 | speed_t baud;
|
---|
922 |
|
---|
923 | baud = string_to_baud(arg);
|
---|
924 |
|
---|
925 | if (type != output_speed) { /* either input or both */
|
---|
926 | cfsetispeed(mode, baud);
|
---|
927 | }
|
---|
928 | if (type != input_speed) { /* either output or both */
|
---|
929 | cfsetospeed(mode, baud);
|
---|
930 | }
|
---|
931 | }
|
---|
932 |
|
---|
933 | #ifdef TIOCGWINSZ
|
---|
934 |
|
---|
935 | static int get_win_size(int fd, struct winsize *win)
|
---|
936 | {
|
---|
937 | int err = ioctl(fd, TIOCGWINSZ, (char *) win);
|
---|
938 |
|
---|
939 | return err;
|
---|
940 | }
|
---|
941 |
|
---|
942 | static void
|
---|
943 | set_window_size(int rows, int cols)
|
---|
944 | {
|
---|
945 | struct winsize win;
|
---|
946 |
|
---|
947 | if (get_win_size(STDIN_FILENO, &win)) {
|
---|
948 | if (errno != EINVAL)
|
---|
949 | perror_on_device("%s");
|
---|
950 | memset(&win, 0, sizeof(win));
|
---|
951 | }
|
---|
952 |
|
---|
953 | if (rows >= 0)
|
---|
954 | win.ws_row = rows;
|
---|
955 | if (cols >= 0)
|
---|
956 | win.ws_col = cols;
|
---|
957 |
|
---|
958 | # ifdef TIOCSSIZE
|
---|
959 | /* Alexander Dupuy <dupuy@cs.columbia.edu> wrote:
|
---|
960 | The following code deals with a bug in the SunOS 4.x (and 3.x?) kernel.
|
---|
961 | This comment from sys/ttold.h describes Sun's twisted logic - a better
|
---|
962 | test would have been (ts_lines > 64k || ts_cols > 64k || ts_cols == 0).
|
---|
963 | At any rate, the problem is gone in Solaris 2.x. */
|
---|
964 |
|
---|
965 | if (win.ws_row == 0 || win.ws_col == 0) {
|
---|
966 | struct ttysize ttysz;
|
---|
967 |
|
---|
968 | ttysz.ts_lines = win.ws_row;
|
---|
969 | ttysz.ts_cols = win.ws_col;
|
---|
970 |
|
---|
971 | win.ws_row = win.ws_col = 1;
|
---|
972 |
|
---|
973 | if ((ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win) != 0)
|
---|
974 | || (ioctl(STDIN_FILENO, TIOCSSIZE, (char *) &ttysz) != 0)) {
|
---|
975 | perror_on_device("%s");
|
---|
976 | }
|
---|
977 | return;
|
---|
978 | }
|
---|
979 | # endif
|
---|
980 |
|
---|
981 | if (ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win))
|
---|
982 | perror_on_device("%s");
|
---|
983 | }
|
---|
984 |
|
---|
985 | static void display_window_size(int fancy)
|
---|
986 | {
|
---|
987 | const char *fmt_str = "%s" "\0" "%s: no size information for this device";
|
---|
988 | struct winsize win;
|
---|
989 |
|
---|
990 | if (get_win_size(STDIN_FILENO, &win)) {
|
---|
991 | if ((errno != EINVAL) || ((fmt_str += 2), !fancy)) {
|
---|
992 | perror_on_device(fmt_str);
|
---|
993 | }
|
---|
994 | } else {
|
---|
995 | wrapf(fancy ? "rows %d; columns %d;" : "%d %d\n",
|
---|
996 | win.ws_row, win.ws_col);
|
---|
997 | if (!fancy)
|
---|
998 | current_col = 0;
|
---|
999 | }
|
---|
1000 | }
|
---|
1001 | #endif
|
---|
1002 |
|
---|
1003 | static int screen_columns(void)
|
---|
1004 | {
|
---|
1005 | int columns;
|
---|
1006 | const char *s;
|
---|
1007 |
|
---|
1008 | #ifdef TIOCGWINSZ
|
---|
1009 | struct winsize win;
|
---|
1010 |
|
---|
1011 | /* With Solaris 2.[123], this ioctl fails and errno is set to
|
---|
1012 | EINVAL for telnet (but not rlogin) sessions.
|
---|
1013 | On ISC 3.0, it fails for the console and the serial port
|
---|
1014 | (but it works for ptys).
|
---|
1015 | It can also fail on any system when stdout isn't a tty.
|
---|
1016 | In case of any failure, just use the default. */
|
---|
1017 | if (get_win_size(STDOUT_FILENO, &win) == 0 && win.ws_col > 0)
|
---|
1018 | return win.ws_col;
|
---|
1019 | #endif
|
---|
1020 |
|
---|
1021 | columns = 80;
|
---|
1022 | if ((s = getenv("COLUMNS"))) {
|
---|
1023 | columns = atoi(s);
|
---|
1024 | }
|
---|
1025 | return columns;
|
---|
1026 | }
|
---|
1027 |
|
---|
1028 | static tcflag_t *mode_type_flag(enum mode_type type, struct termios *mode)
|
---|
1029 | {
|
---|
1030 | static const unsigned char tcflag_offsets[] = {
|
---|
1031 | offsetof(struct termios, c_cflag), /* control */
|
---|
1032 | offsetof(struct termios, c_iflag), /* input */
|
---|
1033 | offsetof(struct termios, c_oflag), /* output */
|
---|
1034 | offsetof(struct termios, c_lflag) /* local */
|
---|
1035 | };
|
---|
1036 |
|
---|
1037 | if (((unsigned int) type) <= local) {
|
---|
1038 | return (tcflag_t *)(((char *) mode) + tcflag_offsets[(int)type]);
|
---|
1039 | }
|
---|
1040 | return NULL;
|
---|
1041 | }
|
---|
1042 |
|
---|
1043 | static void display_changed(struct termios *mode)
|
---|
1044 | {
|
---|
1045 | int i;
|
---|
1046 | int empty_line;
|
---|
1047 | tcflag_t *bitsp;
|
---|
1048 | unsigned long mask;
|
---|
1049 | enum mode_type prev_type = control;
|
---|
1050 |
|
---|
1051 | display_speed(mode, 1);
|
---|
1052 | #ifdef HAVE_C_LINE
|
---|
1053 | wrapf("line = %d;", mode->c_line);
|
---|
1054 | #endif
|
---|
1055 | putchar('\n');
|
---|
1056 | current_col = 0;
|
---|
1057 |
|
---|
1058 | empty_line = 1;
|
---|
1059 | for (i = 0; control_info[i].name != stty_min; ++i) {
|
---|
1060 | if (mode->c_cc[control_info[i].offset] == control_info[i].saneval)
|
---|
1061 | continue;
|
---|
1062 | /* If swtch is the same as susp, don't print both. */
|
---|
1063 | #if VSWTCH == VSUSP
|
---|
1064 | if (control_info[i].name == stty_swtch)
|
---|
1065 | continue;
|
---|
1066 | #endif
|
---|
1067 | /* If eof uses the same slot as min, only print whichever applies. */
|
---|
1068 | #if VEOF == VMIN
|
---|
1069 | if ((mode->c_lflag & ICANON) == 0
|
---|
1070 | && (control_info[i].name == stty_eof
|
---|
1071 | || control_info[i].name == stty_eol)) continue;
|
---|
1072 | #endif
|
---|
1073 |
|
---|
1074 | empty_line = 0;
|
---|
1075 | wrapf("%s = %s;", control_info[i].name,
|
---|
1076 | visible(mode->c_cc[control_info[i].offset]));
|
---|
1077 | }
|
---|
1078 | if ((mode->c_lflag & ICANON) == 0) {
|
---|
1079 | wrapf("min = %d; time = %d;\n", (int) mode->c_cc[VMIN],
|
---|
1080 | (int) mode->c_cc[VTIME]);
|
---|
1081 | } else if (empty_line == 0)
|
---|
1082 | putchar('\n');
|
---|
1083 | current_col = 0;
|
---|
1084 |
|
---|
1085 | empty_line = 1;
|
---|
1086 | for (i = 0; i < NUM_mode_info; ++i) {
|
---|
1087 | if (mode_info[i].flags & OMIT)
|
---|
1088 | continue;
|
---|
1089 | if (EMT(mode_info[i].type) != prev_type) {
|
---|
1090 | if (empty_line == 0) {
|
---|
1091 | putchar('\n');
|
---|
1092 | current_col = 0;
|
---|
1093 | empty_line = 1;
|
---|
1094 | }
|
---|
1095 | prev_type = EMT(mode_info[i].type);
|
---|
1096 | }
|
---|
1097 |
|
---|
1098 | bitsp = mode_type_flag(EMT(mode_info[i].type), mode);
|
---|
1099 | mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
|
---|
1100 | if ((*bitsp & mask) == mode_info[i].bits) {
|
---|
1101 | if (mode_info[i].flags & SANE_UNSET) {
|
---|
1102 | wrapf("%s", mode_info[i].name);
|
---|
1103 | empty_line = 0;
|
---|
1104 | }
|
---|
1105 | }
|
---|
1106 | else if ((mode_info[i].flags & (SANE_SET | REV)) ==
|
---|
1107 | (SANE_SET | REV)) {
|
---|
1108 | wrapf("-%s", mode_info[i].name);
|
---|
1109 | empty_line = 0;
|
---|
1110 | }
|
---|
1111 | }
|
---|
1112 | if (empty_line == 0)
|
---|
1113 | putchar('\n');
|
---|
1114 | current_col = 0;
|
---|
1115 | }
|
---|
1116 |
|
---|
1117 | static void
|
---|
1118 | display_all(struct termios *mode)
|
---|
1119 | {
|
---|
1120 | int i;
|
---|
1121 | tcflag_t *bitsp;
|
---|
1122 | unsigned long mask;
|
---|
1123 | enum mode_type prev_type = control;
|
---|
1124 |
|
---|
1125 | display_speed(mode, 1);
|
---|
1126 | #ifdef TIOCGWINSZ
|
---|
1127 | display_window_size(1);
|
---|
1128 | #endif
|
---|
1129 | #ifdef HAVE_C_LINE
|
---|
1130 | wrapf("line = %d;", mode->c_line);
|
---|
1131 | #endif
|
---|
1132 | putchar('\n');
|
---|
1133 | current_col = 0;
|
---|
1134 |
|
---|
1135 | for (i = 0; control_info[i].name != stty_min; ++i) {
|
---|
1136 | /* If swtch is the same as susp, don't print both. */
|
---|
1137 | #if VSWTCH == VSUSP
|
---|
1138 | if (control_info[i].name == stty_swtch)
|
---|
1139 | continue;
|
---|
1140 | #endif
|
---|
1141 | /* If eof uses the same slot as min, only print whichever applies. */
|
---|
1142 | #if VEOF == VMIN
|
---|
1143 | if ((mode->c_lflag & ICANON) == 0
|
---|
1144 | && (control_info[i].name == stty_eof
|
---|
1145 | || control_info[i].name == stty_eol)) continue;
|
---|
1146 | #endif
|
---|
1147 | wrapf("%s = %s;", control_info[i].name,
|
---|
1148 | visible(mode->c_cc[control_info[i].offset]));
|
---|
1149 | }
|
---|
1150 | #if VEOF == VMIN
|
---|
1151 | if ((mode->c_lflag & ICANON) == 0)
|
---|
1152 | #endif
|
---|
1153 | wrapf("min = %d; time = %d;", mode->c_cc[VMIN], mode->c_cc[VTIME]);
|
---|
1154 | if (current_col != 0)
|
---|
1155 | putchar('\n');
|
---|
1156 | current_col = 0;
|
---|
1157 |
|
---|
1158 | for (i = 0; i < NUM_mode_info; ++i) {
|
---|
1159 | if (mode_info[i].flags & OMIT)
|
---|
1160 | continue;
|
---|
1161 | if (EMT(mode_info[i].type) != prev_type) {
|
---|
1162 | putchar('\n');
|
---|
1163 | current_col = 0;
|
---|
1164 | prev_type = EMT(mode_info[i].type);
|
---|
1165 | }
|
---|
1166 |
|
---|
1167 | bitsp = mode_type_flag(EMT(mode_info[i].type), mode);
|
---|
1168 | mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
|
---|
1169 | if ((*bitsp & mask) == mode_info[i].bits)
|
---|
1170 | wrapf("%s", mode_info[i].name);
|
---|
1171 | else if (mode_info[i].flags & REV)
|
---|
1172 | wrapf("-%s", mode_info[i].name);
|
---|
1173 | }
|
---|
1174 | putchar('\n');
|
---|
1175 | current_col = 0;
|
---|
1176 | }
|
---|
1177 |
|
---|
1178 | static void display_speed(struct termios *mode, int fancy)
|
---|
1179 | {
|
---|
1180 | unsigned long ispeed, ospeed;
|
---|
1181 | const char *fmt_str =
|
---|
1182 | "%lu %lu\n\0" "ispeed %lu baud; ospeed %lu baud;\0"
|
---|
1183 | "%lu\n\0" "\0\0\0\0" "speed %lu baud;";
|
---|
1184 |
|
---|
1185 | ospeed = ispeed = cfgetispeed(mode);
|
---|
1186 | if (ispeed == 0 || ispeed == (ospeed = cfgetospeed(mode))) {
|
---|
1187 | ispeed = ospeed; /* in case ispeed was 0 */
|
---|
1188 | fmt_str += 43;
|
---|
1189 | }
|
---|
1190 | if (fancy) {
|
---|
1191 | fmt_str += 9;
|
---|
1192 | }
|
---|
1193 | wrapf(fmt_str, tty_baud_to_value(ispeed), tty_baud_to_value(ospeed));
|
---|
1194 | if (!fancy)
|
---|
1195 | current_col = 0;
|
---|
1196 | }
|
---|
1197 |
|
---|
1198 | static void display_recoverable(struct termios *mode)
|
---|
1199 | {
|
---|
1200 | int i;
|
---|
1201 |
|
---|
1202 | printf("%lx:%lx:%lx:%lx",
|
---|
1203 | (unsigned long) mode->c_iflag, (unsigned long) mode->c_oflag,
|
---|
1204 | (unsigned long) mode->c_cflag, (unsigned long) mode->c_lflag);
|
---|
1205 | for (i = 0; i < NCCS; ++i)
|
---|
1206 | printf(":%x", (unsigned int) mode->c_cc[i]);
|
---|
1207 | putchar('\n');
|
---|
1208 | }
|
---|
1209 |
|
---|
1210 | static int recover_mode(char *arg, struct termios *mode)
|
---|
1211 | {
|
---|
1212 | int i, n;
|
---|
1213 | unsigned int chr;
|
---|
1214 | unsigned long iflag, oflag, cflag, lflag;
|
---|
1215 |
|
---|
1216 | /* Scan into temporaries since it is too much trouble to figure out
|
---|
1217 | the right format for `tcflag_t'. */
|
---|
1218 | if (sscanf(arg, "%lx:%lx:%lx:%lx%n",
|
---|
1219 | &iflag, &oflag, &cflag, &lflag, &n) != 4)
|
---|
1220 | return 0;
|
---|
1221 | mode->c_iflag = iflag;
|
---|
1222 | mode->c_oflag = oflag;
|
---|
1223 | mode->c_cflag = cflag;
|
---|
1224 | mode->c_lflag = lflag;
|
---|
1225 | arg += n;
|
---|
1226 | for (i = 0; i < NCCS; ++i) {
|
---|
1227 | if (sscanf(arg, ":%x%n", &chr, &n) != 1)
|
---|
1228 | return 0;
|
---|
1229 | mode->c_cc[i] = chr;
|
---|
1230 | arg += n;
|
---|
1231 | }
|
---|
1232 |
|
---|
1233 | /* Fail if there are too many fields. */
|
---|
1234 | if (*arg != '\0')
|
---|
1235 | return 0;
|
---|
1236 |
|
---|
1237 | return 1;
|
---|
1238 | }
|
---|
1239 |
|
---|
1240 | static speed_t string_to_baud(const char *arg)
|
---|
1241 | {
|
---|
1242 | return tty_value_to_baud(bb_xparse_number(arg, 0));
|
---|
1243 | }
|
---|
1244 |
|
---|
1245 | static void sane_mode(struct termios *mode)
|
---|
1246 | {
|
---|
1247 | int i;
|
---|
1248 | tcflag_t *bitsp;
|
---|
1249 |
|
---|
1250 | for (i = 0; i < NUM_control_info; ++i) {
|
---|
1251 | #if VMIN == VEOF
|
---|
1252 | if (control_info[i].name == stty_min)
|
---|
1253 | break;
|
---|
1254 | #endif
|
---|
1255 | mode->c_cc[control_info[i].offset] = control_info[i].saneval;
|
---|
1256 | }
|
---|
1257 |
|
---|
1258 | for (i = 0; i < NUM_mode_info; ++i) {
|
---|
1259 | if (mode_info[i].flags & SANE_SET) {
|
---|
1260 | bitsp = mode_type_flag(EMT(mode_info[i].type), mode);
|
---|
1261 | *bitsp = (*bitsp & ~((unsigned long)mode_info[i].mask))
|
---|
1262 | | mode_info[i].bits;
|
---|
1263 | } else if (mode_info[i].flags & SANE_UNSET) {
|
---|
1264 | bitsp = mode_type_flag(EMT(mode_info[i].type), mode);
|
---|
1265 | *bitsp = *bitsp & ~((unsigned long)mode_info[i].mask)
|
---|
1266 | & ~mode_info[i].bits;
|
---|
1267 | }
|
---|
1268 | }
|
---|
1269 | }
|
---|
1270 |
|
---|
1271 | /* Return a string that is the printable representation of character CH. */
|
---|
1272 | /* Adapted from `cat' by Torbjorn Granlund. */
|
---|
1273 |
|
---|
1274 | static const char *visible(unsigned int ch)
|
---|
1275 | {
|
---|
1276 | static char buf[10];
|
---|
1277 | char *bpout = buf;
|
---|
1278 |
|
---|
1279 | if (ch == _POSIX_VDISABLE) {
|
---|
1280 | return "<undef>";
|
---|
1281 | }
|
---|
1282 |
|
---|
1283 | if (ch >= 128) {
|
---|
1284 | ch -= 128;
|
---|
1285 | *bpout++ = 'M';
|
---|
1286 | *bpout++ = '-';
|
---|
1287 | }
|
---|
1288 |
|
---|
1289 | if (ch < 32) {
|
---|
1290 | *bpout++ = '^';
|
---|
1291 | *bpout++ = ch + 64;
|
---|
1292 | } else if (ch < 127) {
|
---|
1293 | *bpout++ = ch;
|
---|
1294 | } else {
|
---|
1295 | *bpout++ = '^';
|
---|
1296 | *bpout++ = '?';
|
---|
1297 | }
|
---|
1298 |
|
---|
1299 | *bpout = '\0';
|
---|
1300 | return (const char *) buf;
|
---|
1301 | }
|
---|
1302 |
|
---|
1303 | #ifdef TEST
|
---|
1304 |
|
---|
1305 | const char *bb_applet_name = "stty";
|
---|
1306 |
|
---|
1307 | #endif
|
---|