1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * universal getopt32 implementation for busybox
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4 | *
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5 | * Copyright (C) 2003-2005 Vladimir Oleynik <dzo@simtreas.ru>
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6 | *
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7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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8 | */
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9 |
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10 | #include <getopt.h>
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11 | #include "libbb.h"
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12 |
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13 | /* Documentation
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14 |
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15 | uint32_t
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16 | getopt32(char **argv, const char *applet_opts, ...)
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17 |
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18 | The command line options must be declared in const char
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19 | *applet_opts as a string of chars, for example:
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20 |
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21 | flags = getopt32(argv, "rnug");
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22 |
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23 | If one of the given options is found, a flag value is added to
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24 | the return value (an unsigned long).
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25 |
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26 | The flag value is determined by the position of the char in
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27 | applet_opts string. For example, in the above case:
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28 |
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29 | flags = getopt32(argv, "rnug");
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30 |
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31 | "r" will add 1 (bit 0)
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32 | "n" will add 2 (bit 1)
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33 | "u" will add 4 (bit 2)
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34 | "g" will add 8 (bit 3)
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35 |
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36 | and so on. You can also look at the return value as a bit
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37 | field and each option sets one bit.
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38 |
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39 | On exit, global variable optind is set so that if you
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40 | will do argc -= optind; argv += optind; then
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41 | argc will be equal to number of remaining non-option
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42 | arguments, first one would be in argv[0], next in argv[1] and so on
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43 | (options and their parameters will be moved into argv[]
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44 | positions prior to argv[optind]).
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45 |
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46 | ":" If one of the options requires an argument, then add a ":"
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47 | after the char in applet_opts and provide a pointer to store
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48 | the argument. For example:
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49 |
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50 | char *pointer_to_arg_for_a;
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51 | char *pointer_to_arg_for_b;
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52 | char *pointer_to_arg_for_c;
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53 | char *pointer_to_arg_for_d;
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54 |
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55 | flags = getopt32(argv, "a:b:c:d:",
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56 | &pointer_to_arg_for_a, &pointer_to_arg_for_b,
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57 | &pointer_to_arg_for_c, &pointer_to_arg_for_d);
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58 |
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59 | The type of the pointer (char* or llist_t*) may be controlled
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60 | by the "::" special separator that is set in the external string
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61 | opt_complementary (see below for more info).
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62 |
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63 | "::" If option can have an *optional* argument, then add a "::"
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64 | after its char in applet_opts and provide a pointer to store
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65 | the argument. Note that optional arguments _must_
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66 | immediately follow the option: -oparam, not -o param.
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67 |
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68 | "+" If the first character in the applet_opts string is a plus,
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69 | then option processing will stop as soon as a non-option is
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70 | encountered in the argv array. Useful for applets like env
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71 | which should not process arguments to subprograms:
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72 | env -i ls -d /
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73 | Here we want env to process just the '-i', not the '-d'.
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74 |
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75 | "!" Report bad option, missing required options,
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76 | inconsistent options with all-ones return value (instead of abort).
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77 |
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78 | const char *applet_long_options
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79 |
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80 | This struct allows you to define long options:
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81 |
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82 | static const char applet_longopts[] ALIGN1 =
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83 | //"name\0" has_arg val
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84 | "verbose\0" No_argument "v"
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85 | ;
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86 | applet_long_options = applet_longopts;
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87 |
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88 | The last member of struct option (val) typically is set to
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89 | matching short option from applet_opts. If there is no matching
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90 | char in applet_opts, then:
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91 | - return bit have next position after short options
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92 | - if has_arg is not "No_argument", use ptr for arg also
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93 | - opt_complementary affects it too
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94 |
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95 | Note: a good applet will make long options configurable via the
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96 | config process and not a required feature. The current standard
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97 | is to name the config option CONFIG_FEATURE_<applet>_LONG_OPTIONS.
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98 |
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99 | const char *opt_complementary
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100 |
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101 | ":" The colon (":") is used to separate groups of two or more chars
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102 | and/or groups of chars and special characters (stating some
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103 | conditions to be checked).
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104 |
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105 | "abc" If groups of two or more chars are specified, the first char
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106 | is the main option and the other chars are secondary options.
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107 | Their flags will be turned on if the main option is found even
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108 | if they are not specifed on the command line. For example:
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109 |
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110 | opt_complementary = "abc";
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111 | flags = getopt32(argv, "abcd")
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112 |
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113 | If getopt() finds "-a" on the command line, then
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114 | getopt32's return value will be as if "-a -b -c" were
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115 | found.
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116 |
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117 | "ww" Adjacent double options have a counter associated which indicates
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118 | the number of occurrences of the option.
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119 | For example the ps applet needs:
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120 | if w is given once, GNU ps sets the width to 132,
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121 | if w is given more than once, it is "unlimited"
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122 |
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123 | int w_counter = 0; // must be initialized!
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124 | opt_complementary = "ww";
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125 | getopt32(argv, "w", &w_counter);
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126 | if (w_counter)
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127 | width = (w_counter == 1) ? 132 : INT_MAX;
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128 | else
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129 | get_terminal_width(...&width...);
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130 |
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131 | w_counter is a pointer to an integer. It has to be passed to
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132 | getopt32() after all other option argument sinks.
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133 |
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134 | For example: accept multiple -v to indicate the level of verbosity
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135 | and for each -b optarg, add optarg to my_b. Finally, if b is given,
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136 | turn off c and vice versa:
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137 |
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138 | llist_t *my_b = NULL;
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139 | int verbose_level = 0;
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140 | opt_complementary = "vv:b::b-c:c-b";
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141 | f = getopt32(argv, "vb:c", &my_b, &verbose_level);
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142 | if (f & 2) // -c after -b unsets -b flag
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143 | while (my_b) dosomething_with(llist_pop(&my_b));
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144 | if (my_b) // but llist is stored if -b is specified
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145 | free_llist(my_b);
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146 | if (verbose_level) printf("verbose level is %d\n", verbose_level);
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147 |
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148 | Special characters:
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149 |
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150 | "-" A group consisting of just a dash forces all arguments
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151 | to be treated as options, even if they have no leading dashes.
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152 | Next char in this case can't be a digit (0-9), use ':' or end of line.
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153 | Example:
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154 |
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155 | opt_complementary = "-:w-x:x-w"; // "-w-x:x-w" would also work,
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156 | getopt32(argv, "wx"); // but is less readable
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157 |
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158 | This makes it possible to use options without a dash (./program w x)
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159 | as well as with a dash (./program -x).
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160 |
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161 | NB: getopt32() will leak a small amount of memory if you use
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162 | this option! Do not use it if there is a possibility of recursive
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163 | getopt32() calls.
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164 |
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165 | "--" A double dash at the beginning of opt_complementary means the
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166 | argv[1] string should always be treated as options, even if it isn't
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167 | prefixed with a "-". This is useful for special syntax in applets
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168 | such as "ar" and "tar":
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169 | tar xvf foo.tar
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170 |
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171 | NB: getopt32() will leak a small amount of memory if you use
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172 | this option! Do not use it if there is a possibility of recursive
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173 | getopt32() calls.
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174 |
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175 | "-N" A dash as the first char in a opt_complementary group followed
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176 | by a single digit (0-9) means that at least N non-option
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177 | arguments must be present on the command line
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178 |
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179 | "=N" An equal sign as the first char in a opt_complementary group followed
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180 | by a single digit (0-9) means that exactly N non-option
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181 | arguments must be present on the command line
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182 |
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183 | "?N" A "?" as the first char in a opt_complementary group followed
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184 | by a single digit (0-9) means that at most N arguments must be present
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185 | on the command line.
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186 |
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187 | "V-" An option with dash before colon or end-of-line results in
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188 | bb_show_usage() being called if this option is encountered.
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189 | This is typically used to implement "print verbose usage message
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190 | and exit" option.
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191 |
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192 | "a-b" A dash between two options causes the second of the two
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193 | to be unset (and ignored) if it is given on the command line.
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194 |
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195 | [FIXME: what if they are the same? like "x-x"? Is it ever useful?]
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196 |
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197 | For example:
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198 | The du applet has the options "-s" and "-d depth". If
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199 | getopt32 finds -s, then -d is unset or if it finds -d
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200 | then -s is unset. (Note: busybox implements the GNU
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201 | "--max-depth" option as "-d".) To obtain this behavior, you
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202 | set opt_complementary = "s-d:d-s". Only one flag value is
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203 | added to getopt32's return value depending on the
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204 | position of the options on the command line. If one of the
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205 | two options requires an argument pointer (":" in applet_opts
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206 | as in "d:") optarg is set accordingly.
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207 |
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208 | char *smax_print_depth;
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209 |
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210 | opt_complementary = "s-d:d-s:x-x";
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211 | opt = getopt32(argv, "sd:x", &smax_print_depth);
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212 |
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213 | if (opt & 2)
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214 | max_print_depth = atoi(smax_print_depth);
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215 | if (opt & 4)
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216 | printf("Detected odd -x usage\n");
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217 |
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218 | "a--b" A double dash between two options, or between an option and a group
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219 | of options, means that they are mutually exclusive. Unlike
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220 | the "-" case above, an error will be forced if the options
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221 | are used together.
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222 |
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223 | For example:
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224 | The cut applet must have only one type of list specified, so
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225 | -b, -c and -f are mutually exclusive and should raise an error
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226 | if specified together. In this case you must set
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227 | opt_complementary = "b--cf:c--bf:f--bc". If two of the
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228 | mutually exclusive options are found, getopt32 will call
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229 | bb_show_usage() and die.
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230 |
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231 | "x--x" Variation of the above, it means that -x option should occur
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232 | at most once.
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233 |
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234 | "a+" A plus after a char in opt_complementary means that the parameter
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235 | for this option is a nonnegative integer. It will be processed
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236 | with xatoi_positive() - allowed range is 0..INT_MAX.
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237 |
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238 | int param; // "unsigned param;" will also work
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239 | opt_complementary = "p+";
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240 | getopt32(argv, "p:", ¶m);
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241 |
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242 | "a::" A double colon after a char in opt_complementary means that the
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243 | option can occur multiple times. Each occurrence will be saved as
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244 | a llist_t element instead of char*.
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245 |
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246 | For example:
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247 | The grep applet can have one or more "-e pattern" arguments.
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248 | In this case you should use getopt32() as follows:
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249 |
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250 | llist_t *patterns = NULL;
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251 |
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252 | (this pointer must be initializated to NULL if the list is empty
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253 | as required by llist_add_to_end(llist_t **old_head, char *new_item).)
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254 |
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255 | opt_complementary = "e::";
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256 |
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257 | getopt32(argv, "e:", &patterns);
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258 | $ grep -e user -e root /etc/passwd
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259 | root:x:0:0:root:/root:/bin/bash
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260 | user:x:500:500::/home/user:/bin/bash
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261 |
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262 | "a?b" A "?" between an option and a group of options means that
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263 | at least one of them is required to occur if the first option
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264 | occurs in preceding command line arguments.
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265 |
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266 | For example from "id" applet:
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267 |
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268 | // Don't allow -n -r -rn -ug -rug -nug -rnug
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269 | opt_complementary = "r?ug:n?ug:u--g:g--u";
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270 | flags = getopt32(argv, "rnug");
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271 |
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272 | This example allowed only:
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273 | $ id; id -u; id -g; id -ru; id -nu; id -rg; id -ng; id -rnu; id -rng
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274 |
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275 | "X" A opt_complementary group with just a single letter means
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276 | that this option is required. If more than one such group exists,
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277 | at least one option is required to occur (not all of them).
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278 | For example from "start-stop-daemon" applet:
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279 |
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280 | // Don't allow -KS -SK, but -S or -K is required
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281 | opt_complementary = "K:S:K--S:S--K";
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282 | flags = getopt32(argv, "KS...);
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283 |
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284 |
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285 | Don't forget to use ':'. For example, "?322-22-23X-x-a"
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286 | is interpreted as "?3:22:-2:2-2:2-3Xa:2--x" -
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287 | max 3 args; count uses of '-2'; min 2 args; if there is
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288 | a '-2' option then unset '-3', '-X' and '-a'; if there is
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289 | a '-2' and after it a '-x' then error out.
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290 | But it's far too obfuscated. Use ':' to separate groups.
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291 | */
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292 |
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293 | /* Code here assumes that 'unsigned' is at least 32 bits wide */
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294 |
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295 | const char *const bb_argv_dash[] = { "-", NULL };
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296 |
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297 | const char *opt_complementary;
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298 |
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299 | enum {
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300 | PARAM_STRING,
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301 | PARAM_LIST,
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302 | PARAM_INT,
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303 | };
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304 |
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305 | typedef struct {
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306 | unsigned char opt_char;
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307 | smallint param_type;
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308 | unsigned switch_on;
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309 | unsigned switch_off;
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310 | unsigned incongruously;
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311 | unsigned requires;
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312 | void **optarg; /* char**, llist_t** or int *. */
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313 | int *counter;
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314 | } t_complementary;
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315 |
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316 | /* You can set applet_long_options for parse called long options */
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317 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG
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318 | static const struct option bb_null_long_options[1] = {
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319 | { 0, 0, 0, 0 }
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320 | };
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321 | const char *applet_long_options;
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322 | #endif
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323 |
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324 | uint32_t option_mask32;
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325 |
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326 | uint32_t FAST_FUNC
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327 | getopt32(char **argv, const char *applet_opts, ...)
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328 | {
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329 | int argc;
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330 | unsigned flags = 0;
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331 | unsigned requires = 0;
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332 | t_complementary complementary[33]; /* last stays zero-filled */
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333 | char first_char;
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334 | int c;
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335 | const unsigned char *s;
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336 | t_complementary *on_off;
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337 | va_list p;
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338 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG
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339 | const struct option *l_o;
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340 | struct option *long_options = (struct option *) &bb_null_long_options;
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341 | #endif
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342 | unsigned trigger;
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343 | char **pargv;
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344 | int min_arg = 0;
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345 | int max_arg = -1;
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346 |
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347 | #define SHOW_USAGE_IF_ERROR 1
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348 | #define ALL_ARGV_IS_OPTS 2
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349 | #define FIRST_ARGV_IS_OPT 4
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350 |
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351 | int spec_flgs = 0;
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352 |
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353 | /* skip 0: some applets cheat: they do not actually HAVE argv[0] */
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354 | argc = 1;
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355 | while (argv[argc])
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356 | argc++;
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357 |
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358 | va_start(p, applet_opts);
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359 |
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360 | c = 0;
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361 | on_off = complementary;
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362 | memset(on_off, 0, sizeof(complementary));
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363 |
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364 | /* skip bbox extension */
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365 | first_char = applet_opts[0];
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366 | if (first_char == '!')
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367 | applet_opts++;
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368 |
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369 | /* skip GNU extension */
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370 | s = (const unsigned char *)applet_opts;
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371 | if (*s == '+' || *s == '-')
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372 | s++;
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373 | while (*s) {
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374 | if (c >= 32)
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375 | break;
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376 | on_off->opt_char = *s;
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377 | on_off->switch_on = (1 << c);
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378 | if (*++s == ':') {
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379 | on_off->optarg = va_arg(p, void **);
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380 | while (*++s == ':')
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381 | continue;
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382 | }
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383 | on_off++;
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384 | c++;
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385 | }
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386 |
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387 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG
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388 | if (applet_long_options) {
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389 | const char *optstr;
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390 | unsigned i, count;
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391 |
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392 | count = 1;
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393 | optstr = applet_long_options;
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394 | while (optstr[0]) {
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395 | optstr += strlen(optstr) + 3; /* skip NUL, has_arg, val */
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396 | count++;
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397 | }
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398 | /* count == no. of longopts + 1 */
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399 | long_options = alloca(count * sizeof(*long_options));
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400 | memset(long_options, 0, count * sizeof(*long_options));
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401 | i = 0;
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402 | optstr = applet_long_options;
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403 | while (--count) {
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404 | long_options[i].name = optstr;
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405 | optstr += strlen(optstr) + 1;
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406 | long_options[i].has_arg = (unsigned char)(*optstr++);
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407 | /* long_options[i].flag = NULL; */
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408 | long_options[i].val = (unsigned char)(*optstr++);
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409 | i++;
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410 | }
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411 | for (l_o = long_options; l_o->name; l_o++) {
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412 | if (l_o->flag)
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413 | continue;
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414 | for (on_off = complementary; on_off->opt_char; on_off++)
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415 | if (on_off->opt_char == l_o->val)
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416 | goto next_long;
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417 | if (c >= 32)
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418 | break;
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419 | on_off->opt_char = l_o->val;
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420 | on_off->switch_on = (1 << c);
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421 | if (l_o->has_arg != no_argument)
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422 | on_off->optarg = va_arg(p, void **);
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423 | c++;
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424 | next_long: ;
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425 | }
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426 | /* Make it unnecessary to clear applet_long_options
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427 | * by hand after each call to getopt32
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428 | */
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429 | applet_long_options = NULL;
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430 | }
|
---|
431 | #endif /* ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG */
|
---|
432 | for (s = (const unsigned char *)opt_complementary; s && *s; s++) {
|
---|
433 | t_complementary *pair;
|
---|
434 | unsigned *pair_switch;
|
---|
435 |
|
---|
436 | if (*s == ':')
|
---|
437 | continue;
|
---|
438 | c = s[1];
|
---|
439 | if (*s == '?') {
|
---|
440 | if (c < '0' || c > '9') {
|
---|
441 | spec_flgs |= SHOW_USAGE_IF_ERROR;
|
---|
442 | } else {
|
---|
443 | max_arg = c - '0';
|
---|
444 | s++;
|
---|
445 | }
|
---|
446 | continue;
|
---|
447 | }
|
---|
448 | if (*s == '-') {
|
---|
449 | if (c < '0' || c > '9') {
|
---|
450 | if (c == '-') {
|
---|
451 | spec_flgs |= FIRST_ARGV_IS_OPT;
|
---|
452 | s++;
|
---|
453 | } else
|
---|
454 | spec_flgs |= ALL_ARGV_IS_OPTS;
|
---|
455 | } else {
|
---|
456 | min_arg = c - '0';
|
---|
457 | s++;
|
---|
458 | }
|
---|
459 | continue;
|
---|
460 | }
|
---|
461 | if (*s == '=') {
|
---|
462 | min_arg = max_arg = c - '0';
|
---|
463 | s++;
|
---|
464 | continue;
|
---|
465 | }
|
---|
466 | for (on_off = complementary; on_off->opt_char; on_off++)
|
---|
467 | if (on_off->opt_char == *s)
|
---|
468 | break;
|
---|
469 | if (c == ':' && s[2] == ':') {
|
---|
470 | on_off->param_type = PARAM_LIST;
|
---|
471 | continue;
|
---|
472 | }
|
---|
473 | if (c == '+' && (s[2] == ':' || s[2] == '\0')) {
|
---|
474 | on_off->param_type = PARAM_INT;
|
---|
475 | continue;
|
---|
476 | }
|
---|
477 | if (c == ':' || c == '\0') {
|
---|
478 | requires |= on_off->switch_on;
|
---|
479 | continue;
|
---|
480 | }
|
---|
481 | if (c == '-' && (s[2] == ':' || s[2] == '\0')) {
|
---|
482 | flags |= on_off->switch_on;
|
---|
483 | on_off->incongruously |= on_off->switch_on;
|
---|
484 | s++;
|
---|
485 | continue;
|
---|
486 | }
|
---|
487 | if (c == *s) {
|
---|
488 | on_off->counter = va_arg(p, int *);
|
---|
489 | s++;
|
---|
490 | }
|
---|
491 | pair = on_off;
|
---|
492 | pair_switch = &pair->switch_on;
|
---|
493 | for (s++; *s && *s != ':'; s++) {
|
---|
494 | if (*s == '?') {
|
---|
495 | pair_switch = &pair->requires;
|
---|
496 | } else if (*s == '-') {
|
---|
497 | if (pair_switch == &pair->switch_off)
|
---|
498 | pair_switch = &pair->incongruously;
|
---|
499 | else
|
---|
500 | pair_switch = &pair->switch_off;
|
---|
501 | } else {
|
---|
502 | for (on_off = complementary; on_off->opt_char; on_off++)
|
---|
503 | if (on_off->opt_char == *s) {
|
---|
504 | *pair_switch |= on_off->switch_on;
|
---|
505 | break;
|
---|
506 | }
|
---|
507 | }
|
---|
508 | }
|
---|
509 | s--;
|
---|
510 | }
|
---|
511 | opt_complementary = NULL;
|
---|
512 | va_end(p);
|
---|
513 |
|
---|
514 | if (spec_flgs & (FIRST_ARGV_IS_OPT | ALL_ARGV_IS_OPTS)) {
|
---|
515 | pargv = argv + 1;
|
---|
516 | while (*pargv) {
|
---|
517 | if (pargv[0][0] != '-' && pargv[0][0] != '\0') {
|
---|
518 | /* Can't use alloca: opts with params will
|
---|
519 | * return pointers to stack!
|
---|
520 | * NB: we leak these allocations... */
|
---|
521 | char *pp = xmalloc(strlen(*pargv) + 2);
|
---|
522 | *pp = '-';
|
---|
523 | strcpy(pp + 1, *pargv);
|
---|
524 | *pargv = pp;
|
---|
525 | }
|
---|
526 | if (!(spec_flgs & ALL_ARGV_IS_OPTS))
|
---|
527 | break;
|
---|
528 | pargv++;
|
---|
529 | }
|
---|
530 | }
|
---|
531 |
|
---|
532 | /* In case getopt32 was already called:
|
---|
533 | * reset the libc getopt() function, which keeps internal state.
|
---|
534 | * run_nofork_applet_prime() does this, but we might end up here
|
---|
535 | * also via gunzip_main() -> gzip_main(). Play safe.
|
---|
536 | */
|
---|
537 | #ifdef __GLIBC__
|
---|
538 | optind = 0;
|
---|
539 | #else /* BSD style */
|
---|
540 | optind = 1;
|
---|
541 | /* optreset = 1; */
|
---|
542 | #endif
|
---|
543 | /* optarg = NULL; opterr = 0; optopt = 0; - do we need this?? */
|
---|
544 |
|
---|
545 | pargv = NULL;
|
---|
546 |
|
---|
547 | /* Note: just "getopt() <= 0" will not work well for
|
---|
548 | * "fake" short options, like this one:
|
---|
549 | * wget $'-\203' "Test: test" http://kernel.org/
|
---|
550 | * (supposed to act as --header, but doesn't) */
|
---|
551 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG
|
---|
552 | while ((c = getopt_long(argc, argv, applet_opts,
|
---|
553 | long_options, NULL)) != -1) {
|
---|
554 | #else
|
---|
555 | while ((c = getopt(argc, argv, applet_opts)) != -1) {
|
---|
556 | #endif
|
---|
557 | /* getopt prints "option requires an argument -- X"
|
---|
558 | * and returns '?' if an option has no arg, but one is reqd */
|
---|
559 | c &= 0xff; /* fight libc's sign extension */
|
---|
560 | for (on_off = complementary; on_off->opt_char != c; on_off++) {
|
---|
561 | /* c can be NUL if long opt has non-NULL ->flag,
|
---|
562 | * but we construct long opts so that flag
|
---|
563 | * is always NULL (see above) */
|
---|
564 | if (on_off->opt_char == '\0' /* && c != '\0' */) {
|
---|
565 | /* c is probably '?' - "bad option" */
|
---|
566 | goto error;
|
---|
567 | }
|
---|
568 | }
|
---|
569 | if (flags & on_off->incongruously)
|
---|
570 | goto error;
|
---|
571 | trigger = on_off->switch_on & on_off->switch_off;
|
---|
572 | flags &= ~(on_off->switch_off ^ trigger);
|
---|
573 | flags |= on_off->switch_on ^ trigger;
|
---|
574 | flags ^= trigger;
|
---|
575 | if (on_off->counter)
|
---|
576 | (*(on_off->counter))++;
|
---|
577 | if (on_off->param_type == PARAM_LIST) {
|
---|
578 | if (optarg)
|
---|
579 | llist_add_to_end((llist_t **)(on_off->optarg), optarg);
|
---|
580 | } else if (on_off->param_type == PARAM_INT) {
|
---|
581 | if (optarg)
|
---|
582 | //TODO: xatoi_positive indirectly pulls in printf machinery
|
---|
583 | *(unsigned*)(on_off->optarg) = xatoi_positive(optarg);
|
---|
584 | } else if (on_off->optarg) {
|
---|
585 | if (optarg)
|
---|
586 | *(char **)(on_off->optarg) = optarg;
|
---|
587 | }
|
---|
588 | if (pargv != NULL)
|
---|
589 | break;
|
---|
590 | }
|
---|
591 |
|
---|
592 | /* check depending requires for given options */
|
---|
593 | for (on_off = complementary; on_off->opt_char; on_off++) {
|
---|
594 | if (on_off->requires
|
---|
595 | && (flags & on_off->switch_on)
|
---|
596 | && (flags & on_off->requires) == 0
|
---|
597 | ) {
|
---|
598 | goto error;
|
---|
599 | }
|
---|
600 | }
|
---|
601 | if (requires && (flags & requires) == 0)
|
---|
602 | goto error;
|
---|
603 | argc -= optind;
|
---|
604 | if (argc < min_arg || (max_arg >= 0 && argc > max_arg))
|
---|
605 | goto error;
|
---|
606 |
|
---|
607 | option_mask32 = flags;
|
---|
608 | return flags;
|
---|
609 |
|
---|
610 | error:
|
---|
611 | if (first_char != '!')
|
---|
612 | bb_show_usage();
|
---|
613 | return (int32_t)-1;
|
---|
614 | }
|
---|