1 | /** |
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2 | * @file |
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3 | * |
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4 | * Block device partition management. |
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5 | */ |
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6 | |
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7 | /* |
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8 | * Copyright (c) 2009 |
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9 | * embedded brains GmbH |
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10 | * Obere Lagerstr. 30 |
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11 | * D-82178 Puchheim |
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12 | * Germany |
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13 | * <rtems@embedded-brains.de> |
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14 | * |
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15 | * The license and distribution terms for this file may be |
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16 | * found in the file LICENSE in this distribution or at |
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17 | * http://www.rtems.org/license/LICENSE. |
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18 | */ |
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19 | |
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20 | #ifdef HAVE_CONFIG_H |
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21 | #include "config.h" |
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22 | #endif |
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23 | |
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24 | #include <stdio.h> |
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25 | #include <stdlib.h> |
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26 | #include <string.h> |
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27 | |
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28 | #include <rtems/bdpart.h> |
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29 | #include <rtems/error.h> |
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30 | #include <rtems/shell.h> |
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31 | |
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32 | #define RTEMS_BDPART_SHELL_ERROR( fmt, ...) \ |
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33 | do { \ |
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34 | printf( "error: " fmt "\n", ##__VA_ARGS__); \ |
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35 | return -1; \ |
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36 | } while (0) |
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37 | |
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38 | #define RTEMS_BDPART_SHELL_ERROR_SC( sc, fmt, ...) \ |
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39 | if ((sc) != RTEMS_SUCCESSFUL) { \ |
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40 | printf( "error: " fmt ": %s\n", ##__VA_ARGS__, rtems_status_text( sc)); \ |
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41 | return -1; \ |
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42 | } |
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43 | |
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44 | typedef enum { |
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45 | RTEMS_BDPART_SHELL_FS, |
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46 | RTEMS_BDPART_SHELL_N, |
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47 | RTEMS_BDPART_SHELL_MBR, |
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48 | RTEMS_BDPART_SHELL_GPT |
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49 | } rtems_bdpart_shell_state; |
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50 | |
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51 | static const char rtems_bdpart_shell_usage [] = |
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52 | "disk format and utility functions\n" |
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53 | "\n" |
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54 | "fdisk DISK_NAME\n" |
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55 | "\tprints the partition table\n" |
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56 | "\n" |
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57 | "fdisk DISK_NAME [FS N1 [N2 ... ]] ... [write] [FORMAT]\n" |
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58 | "\tcreates a new partition table\n" |
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59 | "\n" |
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60 | "fdisk DISK_NAME register\n" |
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61 | "\tcreates a logical disk for each partition of the disk\n" |
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62 | "\n" |
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63 | "fdisk DISK_NAME unregister\n" |
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64 | "\tdeletes the logical disks associated with the partitions of the disk\n" |
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65 | "\n" |
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66 | "fdisk DISK_NAME mount\n" |
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67 | "\tmounts the file system of each partition of the disk\n" |
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68 | "\n" |
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69 | "fdisk DISK_NAME unmount\n" |
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70 | "\tunmounts the file system of each partition of the disk\n" |
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71 | "\n" |
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72 | "option values:\n" |
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73 | "\tDISK_NAME: absolute path to disk device like '/dev/hda'\n" |
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74 | "\tN*: weights of positive integers\n" |
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75 | "\tFS: 0x00 ... 0xff, fat12, fat16, fat32, data\n" |
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76 | "\twrite: write the new partition table to the disk\n" |
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77 | "\tFORMAT: mbr [[no]dos], gpt"; |
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78 | |
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79 | static int rtems_bdpart_shell_main( int argc, char **argv) |
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80 | { |
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81 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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82 | rtems_bdpart_format format; |
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83 | rtems_bdpart_partition pt [RTEMS_BDPART_PARTITION_NUMBER_HINT]; |
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84 | unsigned dist [RTEMS_BDPART_PARTITION_NUMBER_HINT]; |
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85 | size_t count = RTEMS_BDPART_PARTITION_NUMBER_HINT; |
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86 | const char *disk_name = NULL; |
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87 | const char *mount_base = "/mnt"; |
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88 | bool do_create = false; |
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89 | bool do_read = false; |
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90 | bool do_write = false; |
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91 | bool do_register = false; |
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92 | bool do_unregister = false; |
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93 | bool do_mount = false; |
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94 | bool do_unmount = false; |
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95 | bool do_dump = false; |
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96 | |
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97 | if (argc < 2) { |
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98 | puts( rtems_bdpart_shell_usage); |
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99 | return -1; |
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100 | } |
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101 | |
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102 | disk_name = argv [1]; |
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103 | |
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104 | if (argc == 2) { |
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105 | do_read = true; |
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106 | do_dump = true; |
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107 | } else if (argc == 3) { |
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108 | /* Check option */ |
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109 | if (strcmp( argv [2], "register") == 0) { |
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110 | do_read = true; |
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111 | do_register = true; |
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112 | } else if (strcmp( argv [2], "unregister") == 0) { |
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113 | do_read = true; |
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114 | do_unregister = true; |
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115 | } else if (strcmp( argv [2], "mount") == 0) { |
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116 | do_read = true; |
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117 | do_mount = true; |
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118 | } else if (strcmp( argv [2], "unmount") == 0) { |
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119 | do_read = true; |
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120 | do_unmount = true; |
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121 | } else { |
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122 | RTEMS_BDPART_SHELL_ERROR( "unexpected option: %s", argv [2]); |
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123 | } |
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124 | } else { |
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125 | rtems_bdpart_shell_state state = RTEMS_BDPART_SHELL_FS; |
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126 | uint8_t current_type = RTEMS_BDPART_MBR_FAT_32; |
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127 | size_t i = 0; |
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128 | int ai = 0; |
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129 | |
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130 | /* Clear partition table */ |
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131 | memset( pt, 0, sizeof( pt)); |
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132 | |
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133 | /* Default format */ |
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134 | format.type = RTEMS_BDPART_FORMAT_MBR; |
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135 | format.mbr.disk_id = 0; |
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136 | format.mbr.dos_compatibility = true; |
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137 | |
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138 | for (ai = 2; ai < argc; ++ai) { |
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139 | char *s = argv [ai]; |
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140 | unsigned long v = 0; |
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141 | char *end = NULL; |
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142 | |
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143 | if (strlen( s) == 0) { |
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144 | continue; |
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145 | } else if (strcmp( s, "write") == 0) { |
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146 | do_write = true; |
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147 | continue; |
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148 | } else if (strcmp( s, "mbr") == 0) { |
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149 | state = RTEMS_BDPART_SHELL_MBR; |
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150 | format.type = RTEMS_BDPART_FORMAT_MBR; |
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151 | continue; |
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152 | } else if (strcmp( s, "gpt") == 0) { |
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153 | state = RTEMS_BDPART_SHELL_GPT; |
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154 | format.type = RTEMS_BDPART_FORMAT_GPT; |
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155 | continue; |
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156 | } |
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157 | |
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158 | switch (state) { |
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159 | case RTEMS_BDPART_SHELL_FS: |
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160 | v = strtoul( s, &end, 16); |
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161 | if (*end == '\0') { |
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162 | if (v <= 0xffU) { |
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163 | current_type = (uint8_t) v; |
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164 | } else { |
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165 | RTEMS_BDPART_SHELL_ERROR( "type value out of range: %s", argv [ai]); |
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166 | } |
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167 | } else if (strcmp( s, "fat32") == 0) { |
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168 | current_type = RTEMS_BDPART_MBR_FAT_32; |
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169 | } else if (strcmp( s, "data") == 0) { |
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170 | current_type = RTEMS_BDPART_MBR_DATA; |
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171 | } else if (strcmp( s, "fat16") == 0) { |
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172 | current_type = RTEMS_BDPART_MBR_FAT_16; |
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173 | } else if (strcmp( s, "fat12") == 0) { |
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174 | current_type = RTEMS_BDPART_MBR_FAT_12; |
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175 | } else { |
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176 | RTEMS_BDPART_SHELL_ERROR( "unexpected option: %s", argv [ai]); |
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177 | } |
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178 | state = RTEMS_BDPART_SHELL_N; |
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179 | break; |
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180 | case RTEMS_BDPART_SHELL_N: |
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181 | v = strtoul( s, &end, 10); |
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182 | if (*end == '\0') { |
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183 | rtems_bdpart_to_partition_type( current_type, pt [i].type); |
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184 | dist [i] = v; |
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185 | if (i < count) { |
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186 | ++i; |
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187 | } else { |
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188 | RTEMS_BDPART_SHELL_ERROR( "too many partitions"); |
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189 | } |
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190 | } else { |
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191 | --ai; |
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192 | state = RTEMS_BDPART_SHELL_FS; |
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193 | } |
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194 | break; |
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195 | case RTEMS_BDPART_SHELL_MBR: |
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196 | if (strcmp( s, "dos") == 0) { |
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197 | format.mbr.dos_compatibility = true; |
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198 | } else if (strcmp( s, "nodos") == 0) { |
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199 | format.mbr.dos_compatibility = false; |
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200 | } else { |
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201 | RTEMS_BDPART_SHELL_ERROR( "unexpected option: %s", argv [ai]); |
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202 | } |
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203 | break; |
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204 | case RTEMS_BDPART_SHELL_GPT: |
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205 | RTEMS_BDPART_SHELL_ERROR( "unexpected option: %s", argv [ai]); |
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206 | default: |
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207 | RTEMS_BDPART_SHELL_ERROR( "fdisk interal error"); |
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208 | } |
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209 | } |
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210 | |
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211 | /* Partition number */ |
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212 | count = i; |
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213 | |
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214 | /* Actions */ |
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215 | do_create = true; |
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216 | do_dump = true; |
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217 | if (do_write) { |
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218 | do_read = true; |
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219 | } |
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220 | } |
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221 | |
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222 | if (do_create) { |
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223 | /* Create partitions */ |
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224 | sc = rtems_bdpart_create( disk_name, &format, pt, dist, count); |
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225 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot create partitions for '%s'", disk_name); |
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226 | } |
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227 | |
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228 | if (do_write) { |
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229 | /* Write partitions */ |
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230 | sc = rtems_bdpart_write( disk_name, &format, pt, count); |
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231 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot write partitions to '%s'", disk_name); |
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232 | } |
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233 | |
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234 | if (do_read) { |
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235 | /* Read partitions */ |
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236 | count = RTEMS_BDPART_PARTITION_NUMBER_HINT; |
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237 | sc = rtems_bdpart_read( disk_name, &format, pt, &count); |
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238 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot read partitions from '%s'", disk_name); |
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239 | } |
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240 | |
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241 | if (do_register) { |
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242 | /* Register partitions */ |
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243 | sc = rtems_bdpart_register( disk_name, pt, count); |
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244 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot register partitions of '%s'", disk_name); |
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245 | } |
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246 | |
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247 | if (do_unregister) { |
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248 | /* Unregister partitions */ |
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249 | sc = rtems_bdpart_unregister( disk_name, pt, count); |
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250 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot unregister partitions of '%s'", disk_name); |
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251 | } |
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252 | |
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253 | if (do_mount) { |
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254 | /* Mount partitions */ |
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255 | sc = rtems_bdpart_mount( disk_name, pt, count, mount_base); |
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256 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot mount partitions of '%s' to '%s'", disk_name, mount_base); |
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257 | } |
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258 | |
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259 | if (do_unmount) { |
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260 | /* Unmount partitions */ |
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261 | sc = rtems_bdpart_unmount( disk_name, pt, count, mount_base); |
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262 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot unmount partitions of '%s'", disk_name); |
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263 | } |
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264 | |
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265 | if (do_dump) { |
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266 | /* Dump partitions */ |
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267 | rtems_bdpart_dump( pt, count); |
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268 | } |
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269 | |
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270 | return 0; |
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271 | } |
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272 | |
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273 | struct rtems_shell_cmd_tt rtems_shell_FDISK_Command = { |
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274 | .name = "fdisk", |
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275 | .usage = rtems_bdpart_shell_usage, |
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276 | .topic = "files", |
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277 | .command = rtems_bdpart_shell_main, |
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278 | .alias = NULL, |
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279 | .next = NULL |
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280 | }; |
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