1 | /*
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2 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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3 | * Released under the terms of the GNU GPL v2.0.
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4 | */
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5 |
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6 | #include <sys/stat.h>
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7 | #include <ctype.h>
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8 | #include <stdio.h>
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9 | #include <stdlib.h>
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10 | #include <string.h>
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11 | #include <time.h>
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12 | #include <unistd.h>
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13 |
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14 | #define LKC_DIRECT_LINK
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15 | #include "lkc.h"
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16 |
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17 | static void conf_warning(const char *fmt, ...)
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18 | __attribute__ ((format (printf, 1, 2)));
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19 |
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20 | static const char *conf_filename;
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21 | static int conf_lineno, conf_warnings, conf_unsaved;
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22 |
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23 | const char conf_def_filename[] = ".config";
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24 |
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25 | const char conf_defname[] = "/dev/null"; //bbox
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26 |
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27 | const char *conf_confnames[] = {
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28 | conf_def_filename,
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29 | conf_defname,
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30 | NULL,
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31 | };
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32 |
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33 | static void conf_warning(const char *fmt, ...)
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34 | {
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35 | va_list ap;
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36 | va_start(ap, fmt);
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37 | fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
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38 | vfprintf(stderr, fmt, ap);
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39 | fprintf(stderr, "\n");
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40 | va_end(ap);
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41 | conf_warnings++;
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42 | }
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43 |
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44 | static char *conf_expand_value(const char *in)
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45 | {
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46 | struct symbol *sym;
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47 | const char *src;
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48 | static char res_value[SYMBOL_MAXLENGTH];
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49 | char *dst, name[SYMBOL_MAXLENGTH];
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50 |
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51 | res_value[0] = 0;
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52 | dst = name;
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53 | while ((src = strchr(in, '$'))) {
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54 | strncat(res_value, in, src - in);
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55 | src++;
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56 | dst = name;
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57 | while (isalnum(*src) || *src == '_')
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58 | *dst++ = *src++;
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59 | *dst = 0;
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60 | sym = sym_lookup(name, 0);
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61 | sym_calc_value(sym);
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62 | strcat(res_value, sym_get_string_value(sym));
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63 | in = src;
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64 | }
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65 | strcat(res_value, in);
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66 |
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67 | return res_value;
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68 | }
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69 |
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70 | char *conf_get_default_confname(void)
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71 | {
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72 | struct stat buf;
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73 | static char *fullname = NULL;
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74 | char *env, *name;
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75 |
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76 | name = conf_expand_value(conf_defname);
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77 | env = getenv(SRCTREE);
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78 | if (env) {
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79 | fullname = realloc(fullname, strlen(env) + strlen(name) + 2);
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80 | sprintf(fullname, "%s/%s", env, name);
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81 | if (!stat(fullname, &buf))
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82 | return fullname;
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83 | }
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84 | return name;
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85 | }
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86 |
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87 | int conf_read_simple(const char *name)
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88 | {
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89 | FILE *in = NULL;
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90 | char line[1024];
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91 | char *p, *p2;
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92 | struct symbol *sym;
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93 | int i;
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94 |
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95 | if (name) {
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96 | in = zconf_fopen(name);
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97 | } else {
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98 | const char **names = conf_confnames;
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99 | while ((name = *names++)) {
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100 | name = conf_expand_value(name);
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101 | in = zconf_fopen(name);
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102 | if (in) {
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103 | printf(_("#\n"
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104 | "# using defaults found in %s\n"
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105 | "#\n"), name);
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106 | break;
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107 | }
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108 | }
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109 | }
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110 | if (!in)
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111 | return 1;
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112 |
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113 | conf_filename = name;
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114 | conf_lineno = 0;
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115 | conf_warnings = 0;
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116 | conf_unsaved = 0;
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117 |
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118 | for_all_symbols(i, sym) {
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119 | sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
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120 | if (sym_is_choice(sym))
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121 | sym->flags &= ~SYMBOL_NEW;
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122 | sym->flags &= ~SYMBOL_VALID;
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123 | switch (sym->type) {
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124 | case S_INT:
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125 | case S_HEX:
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126 | case S_STRING:
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127 | if (sym->user.val)
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128 | free(sym->user.val);
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129 | default:
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130 | sym->user.val = NULL;
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131 | sym->user.tri = no;
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132 | }
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133 | }
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134 |
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135 | while (fgets(line, sizeof(line), in)) {
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136 | conf_lineno++;
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137 | sym = NULL;
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138 | switch (line[0]) {
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139 | case '#':
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140 | if (memcmp(line + 2, "CONFIG_", 7))
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141 | continue;
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142 | p = strchr(line + 9, ' ');
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143 | if (!p)
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144 | continue;
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145 | *p++ = 0;
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146 | if (strncmp(p, "is not set", 10))
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147 | continue;
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148 | sym = sym_find(line + 9);
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149 | if (!sym) {
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150 | conf_warning("trying to assign nonexistent symbol %s", line + 9);
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151 | break;
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152 | } else if (!(sym->flags & SYMBOL_NEW)) {
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153 | conf_warning("trying to reassign symbol %s", sym->name);
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154 | break;
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155 | }
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156 | switch (sym->type) {
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157 | case S_BOOLEAN:
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158 | case S_TRISTATE:
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159 | sym->user.tri = no;
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160 | sym->flags &= ~SYMBOL_NEW;
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161 | break;
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162 | default:
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163 | ;
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164 | }
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165 | break;
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166 | case 'C':
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167 | if (memcmp(line, "CONFIG_", 7)) {
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168 | conf_warning("unexpected data");
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169 | continue;
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170 | }
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171 | p = strchr(line + 7, '=');
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172 | if (!p)
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173 | continue;
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174 | *p++ = 0;
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175 | p2 = strchr(p, '\n');
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176 | if (p2)
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177 | *p2 = 0;
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178 | sym = sym_find(line + 7);
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179 | if (!sym) {
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180 | conf_warning("trying to assign nonexistent symbol %s", line + 7);
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181 | break;
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182 | } else if (!(sym->flags & SYMBOL_NEW)) {
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183 | conf_warning("trying to reassign symbol %s", sym->name);
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184 | break;
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185 | }
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186 | switch (sym->type) {
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187 | case S_TRISTATE:
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188 | if (p[0] == 'm') {
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189 | sym->user.tri = mod;
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190 | sym->flags &= ~SYMBOL_NEW;
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191 | break;
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192 | }
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193 | case S_BOOLEAN:
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194 | if (p[0] == 'y') {
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195 | sym->user.tri = yes;
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196 | sym->flags &= ~SYMBOL_NEW;
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197 | break;
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198 | }
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199 | if (p[0] == 'n') {
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200 | sym->user.tri = no;
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201 | sym->flags &= ~SYMBOL_NEW;
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202 | break;
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203 | }
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204 | conf_warning("symbol value '%s' invalid for %s", p, sym->name);
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205 | break;
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206 | case S_STRING:
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207 | if (*p++ != '"')
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208 | break;
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209 | for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
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210 | if (*p2 == '"') {
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211 | *p2 = 0;
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212 | break;
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213 | }
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214 | memmove(p2, p2 + 1, strlen(p2));
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215 | }
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216 | if (!p2) {
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217 | conf_warning("invalid string found");
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218 | continue;
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219 | }
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220 | case S_INT:
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221 | case S_HEX:
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222 | if (sym_string_valid(sym, p)) {
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223 | sym->user.val = strdup(p);
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224 | sym->flags &= ~SYMBOL_NEW;
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225 | } else {
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226 | if (p[0]) /* bbox */
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227 | conf_warning("symbol value '%s' invalid for %s", p, sym->name);
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228 | continue;
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229 | }
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230 | break;
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231 | default:
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232 | ;
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233 | }
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234 | break;
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235 | case '\n':
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236 | break;
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237 | default:
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238 | conf_warning("unexpected data");
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239 | continue;
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240 | }
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241 | if (sym && sym_is_choice_value(sym)) {
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242 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
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243 | switch (sym->user.tri) {
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244 | case no:
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245 | break;
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246 | case mod:
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247 | if (cs->user.tri == yes) {
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248 | conf_warning("%s creates inconsistent choice state", sym->name);
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249 | cs->flags |= SYMBOL_NEW;
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250 | }
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251 | break;
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252 | case yes:
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253 | if (cs->user.tri != no) {
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254 | conf_warning("%s creates inconsistent choice state", sym->name);
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255 | cs->flags |= SYMBOL_NEW;
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256 | } else
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257 | cs->user.val = sym;
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258 | break;
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259 | }
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260 | cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
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261 | }
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262 | }
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263 | fclose(in);
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264 |
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265 | if (modules_sym)
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266 | sym_calc_value(modules_sym);
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267 | return 0;
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268 | }
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269 |
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270 | int conf_read(const char *name)
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271 | {
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272 | struct symbol *sym;
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273 | struct property *prop;
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274 | struct expr *e;
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275 | int i;
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276 |
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277 | if (conf_read_simple(name))
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278 | return 1;
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279 |
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280 | for_all_symbols(i, sym) {
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281 | sym_calc_value(sym);
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282 | if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
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283 | goto sym_ok;
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284 | if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
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285 | /* check that calculated value agrees with saved value */
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286 | switch (sym->type) {
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287 | case S_BOOLEAN:
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288 | case S_TRISTATE:
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289 | if (sym->user.tri != sym_get_tristate_value(sym))
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290 | break;
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291 | if (!sym_is_choice(sym))
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292 | goto sym_ok;
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293 | default:
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294 | if (!strcmp(sym->curr.val, sym->user.val))
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295 | goto sym_ok;
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296 | break;
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297 | }
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298 | } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
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299 | /* no previous value and not saved */
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300 | goto sym_ok;
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301 | conf_unsaved++;
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302 | /* maybe print value in verbose mode... */
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303 | sym_ok:
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304 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
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305 | if (sym->visible == no)
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306 | sym->flags |= SYMBOL_NEW;
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307 | switch (sym->type) {
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308 | case S_STRING:
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309 | case S_INT:
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310 | case S_HEX:
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311 | if (!sym_string_within_range(sym, sym->user.val)) {
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312 | sym->flags |= SYMBOL_NEW;
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313 | sym->flags &= ~SYMBOL_VALID;
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314 | }
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315 | default:
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316 | break;
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317 | }
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318 | }
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319 | if (!sym_is_choice(sym))
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320 | continue;
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321 | prop = sym_get_choice_prop(sym);
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322 | for (e = prop->expr; e; e = e->left.expr)
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323 | if (e->right.sym->visible != no)
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324 | sym->flags |= e->right.sym->flags & SYMBOL_NEW;
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325 | }
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326 |
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327 | sym_change_count = conf_warnings || conf_unsaved;
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328 |
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329 | return 0;
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330 | }
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331 |
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332 | int conf_write(const char *name)
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333 | {
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334 | FILE *out, *out_h;
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335 | struct symbol *sym;
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336 | struct menu *menu;
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337 | const char *basename;
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338 | char dirname[128], tmpname[128], newname[128];
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339 | int type, l;
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340 | const char *str;
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341 | time_t now;
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342 | int use_timestamp = 1;
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343 | char *env;
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344 |
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345 | dirname[0] = 0;
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346 | if (name && name[0]) {
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347 | struct stat st;
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348 | char *slash;
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349 |
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350 | if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
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351 | strcpy(dirname, name);
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352 | strcat(dirname, "/");
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353 | basename = conf_def_filename;
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354 | } else if ((slash = strrchr(name, '/'))) {
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355 | int size = slash - name + 1;
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356 | memcpy(dirname, name, size);
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357 | dirname[size] = 0;
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358 | if (slash[1])
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359 | basename = slash + 1;
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360 | else
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361 | basename = conf_def_filename;
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362 | } else
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363 | basename = name;
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364 | } else
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365 | basename = conf_def_filename;
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366 |
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367 | sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
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368 | out = fopen(newname, "w");
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369 | if (!out)
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370 | return 1;
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371 | out_h = NULL;
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372 | if (!name) {
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373 | out_h = fopen(".tmpconfig.h", "w");
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374 | if (!out_h)
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375 | return 1;
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376 | file_write_dep(NULL);
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377 | }
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378 | sym = sym_lookup("KERNELVERSION", 0);
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379 | sym_calc_value(sym);
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380 | time(&now);
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381 | env = getenv("KCONFIG_NOTIMESTAMP");
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382 | if (env && *env)
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383 | use_timestamp = 0;
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384 |
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385 | fprintf(out, _("#\n"
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386 | "# Automatically generated make config: don't edit\n"
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387 | "# Busybox version: %s\n"
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388 | "%s%s"
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389 | "#\n"),
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390 | sym_get_string_value(sym),
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391 | use_timestamp ? "# " : "",
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392 | use_timestamp ? ctime(&now) : "");
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393 | if (out_h) {
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394 | char buf[sizeof("#define AUTOCONF_TIMESTAMP "
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395 | "\"YYYY-MM-DD HH:MM:SS some_timezone\"\n")];
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396 | buf[0] = '\0';
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397 | if (use_timestamp) {
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398 | size_t ret = \
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399 | strftime(buf, sizeof(buf), "#define AUTOCONF_TIMESTAMP "
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400 | "\"%Y-%m-%d %H:%M:%S %Z\"\n", localtime(&now));
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401 | /* if user has Factory timezone or some other odd install, the
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402 | * %Z above will overflow the string leaving us with undefined
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403 | * results ... so let's try again without the timezone.
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404 | */
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405 | if (ret == 0)
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406 | strftime(buf, sizeof(buf), "#define AUTOCONF_TIMESTAMP "
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407 | "\"%Y-%m-%d %H:%M:%S\"\n", localtime(&now));
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408 | } else { /* bbox */
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409 | strcpy(buf, "#define AUTOCONF_TIMESTAMP \"\"\n");
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410 | }
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411 | fprintf(out_h, "/*\n"
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412 | " * Automatically generated C config: don't edit\n"
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413 | " * Busybox version: %s\n"
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414 | " */\n"
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415 | "%s"
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416 | "\n",
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417 | sym_get_string_value(sym),
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418 | buf);
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419 | }
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420 | if (!sym_change_count)
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421 | sym_clear_all_valid();
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422 |
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423 | menu = rootmenu.list;
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424 | while (menu) {
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425 | sym = menu->sym;
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426 | if (!sym) {
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427 | if (!menu_is_visible(menu))
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428 | goto next;
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429 | str = menu_get_prompt(menu);
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430 | fprintf(out, "\n"
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431 | "#\n"
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432 | "# %s\n"
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433 | "#\n", str);
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434 | if (out_h)
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435 | fprintf(out_h, "\n"
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436 | "/*\n"
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437 | " * %s\n"
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438 | " */\n", str);
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439 | } else if (!(sym->flags & SYMBOL_CHOICE)) {
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440 | sym_calc_value(sym);
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441 | /* bbox: we want to see all syms
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442 | if (!(sym->flags & SYMBOL_WRITE))
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443 | goto next;
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444 | */
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445 | sym->flags &= ~SYMBOL_WRITE;
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446 | type = sym->type;
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447 | if (type == S_TRISTATE) {
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448 | sym_calc_value(modules_sym);
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449 | if (modules_sym->curr.tri == no)
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450 | type = S_BOOLEAN;
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451 | }
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452 | switch (type) {
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453 | case S_BOOLEAN:
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454 | case S_TRISTATE:
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455 | switch (sym_get_tristate_value(sym)) {
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456 | case no:
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457 | fprintf(out, "# CONFIG_%s is not set\n", sym->name);
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458 | if (out_h) {
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459 | fprintf(out_h, "#undef CONFIG_%s\n", sym->name);
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460 | /* bbox */
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461 | fprintf(out_h, "#define ENABLE_%s 0\n", sym->name);
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462 | fprintf(out_h, "#define IF_%s(...)\n", sym->name);
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463 | fprintf(out_h, "#define IF_NOT_%s(...) __VA_ARGS__\n", sym->name);
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464 | }
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465 | break;
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466 | case mod:
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467 | fprintf(out, "CONFIG_%s=m\n", sym->name);
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468 | if (out_h)
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469 | fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
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470 | break;
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471 | case yes:
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472 | fprintf(out, "CONFIG_%s=y\n", sym->name);
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473 | if (out_h) {
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474 | fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
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475 | /* bbox */
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476 | fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
|
---|
477 | fprintf(out_h, "#define IF_%s(...) __VA_ARGS__\n", sym->name);
|
---|
478 | fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name);
|
---|
479 | }
|
---|
480 | break;
|
---|
481 | }
|
---|
482 | break;
|
---|
483 | case S_STRING:
|
---|
484 | // fix me
|
---|
485 | str = sym_get_string_value(sym);
|
---|
486 | fprintf(out, "CONFIG_%s=\"", sym->name);
|
---|
487 | if (out_h)
|
---|
488 | fprintf(out_h, "#define CONFIG_%s \"", sym->name);
|
---|
489 | do {
|
---|
490 | l = strcspn(str, "\"\\");
|
---|
491 | if (l) {
|
---|
492 | fwrite(str, l, 1, out);
|
---|
493 | if (out_h)
|
---|
494 | fwrite(str, l, 1, out_h);
|
---|
495 | }
|
---|
496 | str += l;
|
---|
497 | while (*str == '\\' || *str == '"') {
|
---|
498 | fprintf(out, "\\%c", *str);
|
---|
499 | if (out_h)
|
---|
500 | fprintf(out_h, "\\%c", *str);
|
---|
501 | str++;
|
---|
502 | }
|
---|
503 | } while (*str);
|
---|
504 | fputs("\"\n", out);
|
---|
505 | if (out_h) {
|
---|
506 | fputs("\"\n", out_h);
|
---|
507 | /* bbox */
|
---|
508 | fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
|
---|
509 | fprintf(out_h, "#define IF_%s(...) __VA_ARGS__\n", sym->name);
|
---|
510 | fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name);
|
---|
511 | }
|
---|
512 | break;
|
---|
513 | case S_HEX:
|
---|
514 | str = sym_get_string_value(sym);
|
---|
515 | if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
|
---|
516 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
|
---|
517 | if (out_h) {
|
---|
518 | fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
|
---|
519 | /* bbox */
|
---|
520 | fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
|
---|
521 | fprintf(out_h, "#define IF_%s(...) __VA_ARGS__\n", sym->name);
|
---|
522 | fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name);
|
---|
523 | }
|
---|
524 | break;
|
---|
525 | }
|
---|
526 | case S_INT:
|
---|
527 | str = sym_get_string_value(sym);
|
---|
528 | if (!str[0])
|
---|
529 | str = "0";
|
---|
530 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
|
---|
531 | if (out_h) {
|
---|
532 | fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
|
---|
533 | /* bbox */
|
---|
534 | fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
|
---|
535 | fprintf(out_h, "#define IF_%s(...) __VA_ARGS__\n", sym->name);
|
---|
536 | fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name);
|
---|
537 | }
|
---|
538 | break;
|
---|
539 | }
|
---|
540 | }
|
---|
541 |
|
---|
542 | next:
|
---|
543 | if (menu->list) {
|
---|
544 | menu = menu->list;
|
---|
545 | continue;
|
---|
546 | }
|
---|
547 | if (menu->next)
|
---|
548 | menu = menu->next;
|
---|
549 | else while ((menu = menu->parent)) {
|
---|
550 | if (menu->next) {
|
---|
551 | menu = menu->next;
|
---|
552 | break;
|
---|
553 | }
|
---|
554 | }
|
---|
555 | }
|
---|
556 | fclose(out);
|
---|
557 | if (out_h) {
|
---|
558 | fclose(out_h);
|
---|
559 | rename(".tmpconfig.h", "include/autoconf.h");
|
---|
560 | }
|
---|
561 | if (!name || basename != conf_def_filename) {
|
---|
562 | if (!name)
|
---|
563 | name = conf_def_filename;
|
---|
564 | sprintf(tmpname, "%s.old", name);
|
---|
565 | rename(name, tmpname);
|
---|
566 | }
|
---|
567 | sprintf(tmpname, "%s%s", dirname, basename);
|
---|
568 | if (rename(newname, tmpname))
|
---|
569 | return 1;
|
---|
570 |
|
---|
571 | sym_change_count = 0;
|
---|
572 |
|
---|
573 | return 0;
|
---|
574 | }
|
---|