1 | /*
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2 | * Copyright (c) 2018 Jiri Svoboda
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | *
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9 | * - Redistributions of source code must retain the above copyright
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10 | * notice, this list of conditions and the following disclaimer.
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11 | * - Redistributions in binary form must reproduce the above copyright
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12 | * notice, this list of conditions and the following disclaimer in the
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13 | * documentation and/or other materials provided with the distribution.
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14 | * - The name of the author may not be used to endorse or promote products
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15 | * derived from this software without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 | */
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28 |
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29 | /** @addtogroup mkext4
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30 | * @{
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31 | */
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32 |
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33 | /**
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34 | * @file
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35 | * @brief Tool for creating new Ext4 file systems.
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36 | */
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37 |
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38 | #include <errno.h>
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39 | #include <ext4/filesystem.h>
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40 | #include <loc.h>
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41 | #include <stdio.h>
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42 | #include <str.h>
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43 |
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44 | #define NAME "mkext4"
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45 |
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46 | static void syntax_print(void);
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47 | static errno_t ext4_version_parse(const char *, ext4_cfg_ver_t *);
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48 |
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49 | int main(int argc, char **argv)
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50 | {
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51 | errno_t rc;
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52 | char *dev_path;
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53 | service_id_t service_id;
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54 | ext4_cfg_t cfg;
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55 | char *endptr;
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56 | aoff64_t nblocks;
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57 | const char *label = "";
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58 | unsigned int bsize = 4096;
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59 |
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60 | cfg.version = ext4_def_fs_version;
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61 |
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62 | if (argc < 2) {
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63 | printf(NAME ": Error, argument missing.\n");
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64 | syntax_print();
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65 | return 1;
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66 | }
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67 |
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68 | --argc;
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69 | ++argv;
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70 |
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71 | while (*argv && *argv[0] == '-') {
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72 | if (str_cmp(*argv, "--size") == 0) {
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73 | --argc;
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74 | ++argv;
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75 | if (*argv == NULL) {
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76 | printf(NAME ": Error, argument missing.\n");
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77 | syntax_print();
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78 | return 1;
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79 | }
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80 |
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81 | nblocks = strtol(*argv, &endptr, 10);
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82 | if (*endptr != '\0') {
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83 | printf(NAME ": Error, invalid argument.\n");
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84 | syntax_print();
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85 | return 1;
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86 | }
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87 |
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88 | --argc;
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89 | ++argv;
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90 | continue;
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91 | }
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92 |
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93 | if (str_cmp(*argv, "--bsize") == 0) {
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94 | --argc;
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95 | ++argv;
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96 | if (*argv == NULL) {
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97 | printf(NAME ": Error, argument missing.\n");
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98 | syntax_print();
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99 | return 1;
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100 | }
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101 |
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102 | bsize = strtol(*argv, &endptr, 10);
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103 | if (*endptr != '\0') {
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104 | printf(NAME ": Error, invalid argument.\n");
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105 | syntax_print();
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106 | return 1;
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107 | }
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108 |
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109 | --argc;
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110 | ++argv;
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111 | continue;
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112 | }
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113 |
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114 | if (str_cmp(*argv, "--type") == 0) {
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115 | --argc;
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116 | ++argv;
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117 | if (*argv == NULL) {
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118 | printf(NAME ": Error, argument missing.\n");
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119 | syntax_print();
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120 | return 1;
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121 | }
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122 |
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123 | rc = ext4_version_parse(*argv, &cfg.version);
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124 | if (rc != EOK) {
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125 | printf(NAME ": Error, invalid argument.\n");
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126 | syntax_print();
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127 | return 1;
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128 | }
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129 |
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130 | --argc;
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131 | ++argv;
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132 | continue;
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133 | }
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134 |
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135 | if (str_cmp(*argv, "--label") == 0) {
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136 | --argc;
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137 | ++argv;
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138 | if (*argv == NULL) {
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139 | printf(NAME ": Error, argument missing.\n");
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140 | syntax_print();
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141 | return 1;
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142 | }
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143 |
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144 | label = *argv;
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145 |
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146 | --argc;
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147 | ++argv;
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148 | continue;
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149 | }
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150 |
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151 | if (str_cmp(*argv, "--help") == 0) {
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152 | syntax_print();
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153 | return 0;
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154 | }
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155 |
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156 | if (str_cmp(*argv, "-") == 0) {
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157 | --argc;
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158 | ++argv;
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159 | break;
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160 | } else {
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161 | printf(NAME ": Invalid argument: %s\n", *argv);
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162 | syntax_print();
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163 | return 1;
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164 | }
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165 | }
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166 |
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167 | if (argc != 1) {
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168 | printf(NAME ": Error, unexpected argument.\n");
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169 | syntax_print();
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170 | return 1;
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171 | }
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172 |
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173 | dev_path = *argv;
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174 | printf("Device: %s\n", dev_path);
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175 |
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176 | rc = loc_service_get_id(dev_path, &service_id, 0);
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177 | if (rc != EOK) {
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178 | printf(NAME ": Error resolving device `%s'.\n", dev_path);
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179 | return 2;
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180 | }
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181 |
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182 | cfg.volume_name = label;
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183 | cfg.bsize = bsize;
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184 | (void) nblocks;
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185 |
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186 | rc = ext4_filesystem_create(&cfg, service_id);
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187 | if (rc != EOK) {
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188 | printf(NAME ": Error initializing file system.\n");
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189 | return 3;
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190 | }
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191 |
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192 | printf("Success.\n");
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193 |
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194 | return 0;
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195 | }
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196 |
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197 | static void syntax_print(void)
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198 | {
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199 | printf("syntax: mkext4 [<options>...] <device_name>\n");
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200 | printf("options:\n"
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201 | "\t--size <sectors> Filesystem size, overrides device size\n"
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202 | "\t--label <label> Volume label\n"
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203 | "\t--type <fstype> Filesystem type (ext2, ext2old)\n"
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204 | "\t--bsize <bytes> Filesystem block size in bytes (default = 4096)\n");
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205 | }
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206 |
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207 | static errno_t ext4_version_parse(const char *str, ext4_cfg_ver_t *ver)
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208 | {
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209 | if (str_cmp(str, "ext2old") == 0) {
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210 | *ver = extver_ext2_old;
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211 | return EOK;
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212 | }
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213 |
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214 | if (str_cmp(str, "ext2") == 0) {
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215 | *ver = extver_ext2;
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216 | return EOK;
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217 | }
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218 |
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219 | return EINVAL;
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220 | }
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221 |
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222 | /**
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223 | * @}
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224 | */
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