1 | /* vi: set sw=4 ts=4: */
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2 | /* fdisk.c -- Partition table manipulator for Linux.
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3 | *
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4 | * Copyright (C) 1992 A. V. Le Blanc (LeBlanc@mcc.ac.uk)
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5 | * Copyright (C) 2001,2002 Vladimir Oleynik <dzo@simtreas.ru> (initial bb port)
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6 | *
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7 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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8 | */
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9 |
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10 | #ifndef _LARGEFILE64_SOURCE
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11 | /* For lseek64 */
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12 | #define _LARGEFILE64_SOURCE
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13 | #endif
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14 | #include <assert.h> /* assert */
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15 | #include "libbb.h"
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16 |
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17 | /* Looks like someone forgot to add this to config system */
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18 | #ifndef ENABLE_FEATURE_FDISK_BLKSIZE
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19 | # define ENABLE_FEATURE_FDISK_BLKSIZE 0
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20 | # define USE_FEATURE_FDISK_BLKSIZE(a)
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21 | #endif
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22 |
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23 | #define DEFAULT_SECTOR_SIZE 512
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24 | #define MAX_SECTOR_SIZE 2048
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25 | #define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */
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26 | #define MAXIMUM_PARTS 60
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27 |
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28 | #define ACTIVE_FLAG 0x80
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29 |
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30 | #define EXTENDED 0x05
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31 | #define WIN98_EXTENDED 0x0f
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32 | #define LINUX_PARTITION 0x81
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33 | #define LINUX_SWAP 0x82
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34 | #define LINUX_NATIVE 0x83
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35 | #define LINUX_EXTENDED 0x85
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36 | #define LINUX_LVM 0x8e
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37 | #define LINUX_RAID 0xfd
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38 |
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39 | /* Used for sector numbers. Today's disk sizes make it necessary */
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40 | typedef unsigned long long ullong;
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41 |
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42 | struct hd_geometry {
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43 | unsigned char heads;
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44 | unsigned char sectors;
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45 | unsigned short cylinders;
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46 | unsigned long start;
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47 | };
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48 |
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49 | #define HDIO_GETGEO 0x0301 /* get device geometry */
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50 |
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51 | static const char msg_building_new_label[] ALIGN1 =
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52 | "Building a new %s. Changes will remain in memory only,\n"
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53 | "until you decide to write them. After that the previous content\n"
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54 | "won't be recoverable.\n\n";
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55 |
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56 | static const char msg_part_already_defined[] ALIGN1 =
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57 | "Partition %d is already defined, delete it before re-adding\n";
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58 |
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59 |
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60 | static unsigned sector_size = DEFAULT_SECTOR_SIZE;
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61 | static unsigned user_set_sector_size;
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62 | static unsigned sector_offset = 1;
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63 |
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64 | #if ENABLE_FEATURE_OSF_LABEL
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65 | static int possibly_osf_label;
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66 | #endif
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67 |
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68 | static unsigned heads, sectors, cylinders;
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69 | static void update_units(void);
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70 |
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71 |
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72 | struct partition {
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73 | unsigned char boot_ind; /* 0x80 - active */
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74 | unsigned char head; /* starting head */
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75 | unsigned char sector; /* starting sector */
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76 | unsigned char cyl; /* starting cylinder */
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77 | unsigned char sys_ind; /* What partition type */
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78 | unsigned char end_head; /* end head */
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79 | unsigned char end_sector; /* end sector */
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80 | unsigned char end_cyl; /* end cylinder */
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81 | unsigned char start4[4]; /* starting sector counting from 0 */
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82 | unsigned char size4[4]; /* nr of sectors in partition */
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83 | } ATTRIBUTE_PACKED;
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84 |
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85 | static const char unable_to_open[] ALIGN1 = "cannot open %s";
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86 | static const char unable_to_read[] ALIGN1 = "cannot read from %s";
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87 | static const char unable_to_seek[] ALIGN1 = "cannot seek on %s";
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88 | static const char unable_to_write[] ALIGN1 = "cannot write to %s";
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89 | static const char ioctl_error[] ALIGN1 = "BLKGETSIZE ioctl failed on %s";
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90 | static void fdisk_fatal(const char *why) ATTRIBUTE_NORETURN;
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91 |
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92 | enum label_type {
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93 | label_dos, label_sun, label_sgi, label_aix, label_osf
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94 | };
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95 |
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96 | #define LABEL_IS_DOS (label_dos == current_label_type)
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97 |
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98 | #if ENABLE_FEATURE_SUN_LABEL
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99 | #define LABEL_IS_SUN (label_sun == current_label_type)
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100 | #define STATIC_SUN static
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101 | #else
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102 | #define LABEL_IS_SUN 0
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103 | #define STATIC_SUN extern
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104 | #endif
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105 |
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106 | #if ENABLE_FEATURE_SGI_LABEL
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107 | #define LABEL_IS_SGI (label_sgi == current_label_type)
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108 | #define STATIC_SGI static
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109 | #else
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110 | #define LABEL_IS_SGI 0
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111 | #define STATIC_SGI extern
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112 | #endif
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113 |
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114 | #if ENABLE_FEATURE_AIX_LABEL
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115 | #define LABEL_IS_AIX (label_aix == current_label_type)
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116 | #define STATIC_AIX static
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117 | #else
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118 | #define LABEL_IS_AIX 0
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119 | #define STATIC_AIX extern
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120 | #endif
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121 |
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122 | #if ENABLE_FEATURE_OSF_LABEL
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123 | #define LABEL_IS_OSF (label_osf == current_label_type)
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124 | #define STATIC_OSF static
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125 | #else
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126 | #define LABEL_IS_OSF 0
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127 | #define STATIC_OSF extern
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128 | #endif
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129 |
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130 | enum action { fdisk, require, try_only, create_empty_dos, create_empty_sun };
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131 |
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132 | static enum label_type current_label_type;
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133 |
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134 | static const char *disk_device;
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135 | static int fd; /* the disk */
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136 | static int partitions = 4; /* maximum partition + 1 */
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137 | static int display_in_cyl_units = 1;
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138 | static unsigned units_per_sector = 1;
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139 | #if ENABLE_FEATURE_FDISK_WRITABLE
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140 | static void change_units(void);
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141 | static void reread_partition_table(int leave);
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142 | static void delete_partition(int i);
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143 | static int get_partition(int warn, int max);
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144 | static void list_types(const char *const *sys);
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145 | static unsigned read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, const char *mesg);
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146 | #endif
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147 | static const char *partition_type(unsigned char type);
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148 | static void get_geometry(void);
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149 | static int get_boot(enum action what);
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150 |
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151 | #define PLURAL 0
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152 | #define SINGULAR 1
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153 |
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154 | static unsigned get_start_sect(const struct partition *p);
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155 | static unsigned get_nr_sects(const struct partition *p);
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156 |
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157 | /*
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158 | * per partition table entry data
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159 | *
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160 | * The four primary partitions have the same sectorbuffer (MBRbuffer)
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161 | * and have NULL ext_pointer.
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162 | * Each logical partition table entry has two pointers, one for the
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163 | * partition and one link to the next one.
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164 | */
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165 | struct pte {
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166 | struct partition *part_table; /* points into sectorbuffer */
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167 | struct partition *ext_pointer; /* points into sectorbuffer */
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168 | ullong offset; /* disk sector number */
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169 | char *sectorbuffer; /* disk sector contents */
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170 | #if ENABLE_FEATURE_FDISK_WRITABLE
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171 | char changed; /* boolean */
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172 | #endif
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173 | };
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174 |
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175 | /* DOS partition types */
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176 |
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177 | static const char *const i386_sys_types[] = {
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178 | "\x00" "Empty",
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179 | "\x01" "FAT12",
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180 | "\x04" "FAT16 <32M",
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181 | "\x05" "Extended", /* DOS 3.3+ extended partition */
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182 | "\x06" "FAT16", /* DOS 16-bit >=32M */
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183 | "\x07" "HPFS/NTFS", /* OS/2 IFS, eg, HPFS or NTFS or QNX */
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184 | "\x0a" "OS/2 Boot Manager",/* OS/2 Boot Manager */
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185 | "\x0b" "Win95 FAT32",
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186 | "\x0c" "Win95 FAT32 (LBA)",/* LBA really is 'Extended Int 13h' */
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187 | "\x0e" "Win95 FAT16 (LBA)",
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188 | "\x0f" "Win95 Ext'd (LBA)",
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189 | "\x11" "Hidden FAT12",
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190 | "\x12" "Compaq diagnostics",
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191 | "\x14" "Hidden FAT16 <32M",
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192 | "\x16" "Hidden FAT16",
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193 | "\x17" "Hidden HPFS/NTFS",
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194 | "\x1b" "Hidden Win95 FAT32",
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195 | "\x1c" "Hidden W95 FAT32 (LBA)",
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196 | "\x1e" "Hidden W95 FAT16 (LBA)",
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197 | "\x3c" "Part.Magic recovery",
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198 | "\x41" "PPC PReP Boot",
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199 | "\x42" "SFS",
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200 | "\x63" "GNU HURD or SysV", /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
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201 | "\x80" "Old Minix", /* Minix 1.4a and earlier */
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202 | "\x81" "Minix / old Linux",/* Minix 1.4b and later */
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203 | "\x82" "Linux swap", /* also Solaris */
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204 | "\x83" "Linux",
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205 | "\x84" "OS/2 hidden C: drive",
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206 | "\x85" "Linux extended",
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207 | "\x86" "NTFS volume set",
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208 | "\x87" "NTFS volume set",
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209 | "\x8e" "Linux LVM",
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210 | "\x9f" "BSD/OS", /* BSDI */
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211 | "\xa0" "Thinkpad hibernation",
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212 | "\xa5" "FreeBSD", /* various BSD flavours */
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213 | "\xa6" "OpenBSD",
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214 | "\xa8" "Darwin UFS",
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215 | "\xa9" "NetBSD",
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216 | "\xab" "Darwin boot",
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217 | "\xb7" "BSDI fs",
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218 | "\xb8" "BSDI swap",
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219 | "\xbe" "Solaris boot",
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220 | "\xeb" "BeOS fs",
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221 | "\xee" "EFI GPT", /* Intel EFI GUID Partition Table */
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222 | "\xef" "EFI (FAT-12/16/32)", /* Intel EFI System Partition */
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223 | "\xf0" "Linux/PA-RISC boot", /* Linux/PA-RISC boot loader */
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224 | "\xf2" "DOS secondary", /* DOS 3.3+ secondary */
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225 | "\xfd" "Linux raid autodetect", /* New (2.2.x) raid partition with
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226 | autodetect using persistent
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227 | superblock */
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228 | #if 0 /* ENABLE_WEIRD_PARTITION_TYPES */
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229 | "\x02" "XENIX root",
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230 | "\x03" "XENIX usr",
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231 | "\x08" "AIX", /* AIX boot (AIX -- PS/2 port) or SplitDrive */
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232 | "\x09" "AIX bootable", /* AIX data or Coherent */
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233 | "\x10" "OPUS",
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234 | "\x18" "AST SmartSleep",
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235 | "\x24" "NEC DOS",
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236 | "\x39" "Plan 9",
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237 | "\x40" "Venix 80286",
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238 | "\x4d" "QNX4.x",
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239 | "\x4e" "QNX4.x 2nd part",
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240 | "\x4f" "QNX4.x 3rd part",
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241 | "\x50" "OnTrack DM",
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242 | "\x51" "OnTrack DM6 Aux1", /* (or Novell) */
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243 | "\x52" "CP/M", /* CP/M or Microport SysV/AT */
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244 | "\x53" "OnTrack DM6 Aux3",
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245 | "\x54" "OnTrackDM6",
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246 | "\x55" "EZ-Drive",
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247 | "\x56" "Golden Bow",
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248 | "\x5c" "Priam Edisk",
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249 | "\x61" "SpeedStor",
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250 | "\x64" "Novell Netware 286",
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251 | "\x65" "Novell Netware 386",
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252 | "\x70" "DiskSecure Multi-Boot",
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253 | "\x75" "PC/IX",
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254 | "\x93" "Amoeba",
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255 | "\x94" "Amoeba BBT", /* (bad block table) */
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256 | "\xa7" "NeXTSTEP",
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257 | "\xbb" "Boot Wizard hidden",
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258 | "\xc1" "DRDOS/sec (FAT-12)",
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259 | "\xc4" "DRDOS/sec (FAT-16 < 32M)",
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260 | "\xc6" "DRDOS/sec (FAT-16)",
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261 | "\xc7" "Syrinx",
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262 | "\xda" "Non-FS data",
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263 | "\xdb" "CP/M / CTOS / ...",/* CP/M or Concurrent CP/M or
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264 | Concurrent DOS or CTOS */
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265 | "\xde" "Dell Utility", /* Dell PowerEdge Server utilities */
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266 | "\xdf" "BootIt", /* BootIt EMBRM */
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267 | "\xe1" "DOS access", /* DOS access or SpeedStor 12-bit FAT
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268 | extended partition */
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269 | "\xe3" "DOS R/O", /* DOS R/O or SpeedStor */
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270 | "\xe4" "SpeedStor", /* SpeedStor 16-bit FAT extended
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271 | partition < 1024 cyl. */
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272 | "\xf1" "SpeedStor",
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273 | "\xf4" "SpeedStor", /* SpeedStor large partition */
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274 | "\xfe" "LANstep", /* SpeedStor >1024 cyl. or LANstep */
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275 | "\xff" "BBT", /* Xenix Bad Block Table */
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276 | #endif
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277 | NULL
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278 | };
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279 |
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280 |
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281 | /* Globals */
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282 |
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283 | struct globals {
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284 | char *line_ptr;
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285 | char line_buffer[80];
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286 | char partname_buffer[80];
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287 | jmp_buf listingbuf;
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288 | /* Raw disk label. For DOS-type partition tables the MBR,
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289 | * with descriptions of the primary partitions. */
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290 | char MBRbuffer[MAX_SECTOR_SIZE];
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291 | /* Partition tables */
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292 | struct pte ptes[MAXIMUM_PARTS];
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293 | };
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294 | /* bb_common_bufsiz1 is too small for this on 64 bit CPUs */
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295 | #define G (*ptr_to_globals)
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296 |
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297 | #define line_ptr (G.line_ptr)
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298 | #define listingbuf (G.listingbuf)
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299 | #define line_buffer (G.line_buffer)
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300 | #define partname_buffer (G.partname_buffer)
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301 | #define MBRbuffer (G.MBRbuffer)
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302 | #define ptes (G.ptes)
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303 |
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304 |
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305 | /* Code */
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306 |
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307 | #define IS_EXTENDED(i) \
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308 | ((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED)
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309 |
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310 | #define cround(n) (display_in_cyl_units ? ((n)/units_per_sector)+1 : (n))
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311 |
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312 | #define scround(x) (((x)+units_per_sector-1)/units_per_sector)
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313 |
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314 | #define pt_offset(b, n) \
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315 | ((struct partition *)((b) + 0x1be + (n) * sizeof(struct partition)))
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316 |
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317 | #define sector(s) ((s) & 0x3f)
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318 |
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319 | #define cylinder(s, c) ((c) | (((s) & 0xc0) << 2))
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320 |
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321 | #define hsc2sector(h,s,c) \
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322 | (sector(s) - 1 + sectors * ((h) + heads * cylinder(s,c)))
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323 |
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324 | #define set_hsc(h,s,c,sector) \
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325 | do { \
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326 | s = sector % sectors + 1; \
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327 | sector /= sectors; \
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328 | h = sector % heads; \
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329 | sector /= heads; \
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330 | c = sector & 0xff; \
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331 | s |= (sector >> 2) & 0xc0; \
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332 | } while (0)
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333 |
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334 | #if ENABLE_FEATURE_FDISK_WRITABLE
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335 | /* read line; return 0 or first printable char */
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336 | static int
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337 | read_line(const char *prompt)
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338 | {
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339 | int sz;
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340 |
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341 | sz = read_line_input(prompt, line_buffer, sizeof(line_buffer), NULL);
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342 | if (sz <= 0)
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343 | exit(0); /* Ctrl-D or Ctrl-C */
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344 |
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345 | if (line_buffer[sz-1] == '\n')
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346 | line_buffer[--sz] = '\0';
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347 |
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348 | line_ptr = line_buffer;
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349 | while (*line_ptr && !isgraph(*line_ptr))
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350 | line_ptr++;
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351 | return *line_ptr;
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352 | }
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353 | #endif
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354 |
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355 | /*
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356 | * return partition name - uses static storage
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357 | */
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358 | static const char *
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359 | partname(const char *dev, int pno, int lth)
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360 | {
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361 | const char *p;
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362 | int w, wp;
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363 | int bufsiz;
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364 | char *bufp;
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365 |
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366 | bufp = partname_buffer;
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367 | bufsiz = sizeof(partname_buffer);
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368 |
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369 | w = strlen(dev);
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370 | p = "";
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371 |
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372 | if (isdigit(dev[w-1]))
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373 | p = "p";
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374 |
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375 | /* devfs kludge - note: fdisk partition names are not supposed
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376 | to equal kernel names, so there is no reason to do this */
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377 | if (strcmp(dev + w - 4, "disc") == 0) {
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378 | w -= 4;
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379 | p = "part";
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380 | }
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381 |
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382 | wp = strlen(p);
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383 |
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384 | if (lth) {
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385 | snprintf(bufp, bufsiz, "%*.*s%s%-2u",
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386 | lth-wp-2, w, dev, p, pno);
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387 | } else {
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388 | snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
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389 | }
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390 | return bufp;
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391 | }
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392 |
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393 | #if ENABLE_FEATURE_FDISK_WRITABLE
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394 | static void
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395 | set_all_unchanged(void)
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396 | {
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397 | int i;
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398 |
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399 | for (i = 0; i < MAXIMUM_PARTS; i++)
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400 | ptes[i].changed = 0;
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401 | }
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402 |
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403 | static ALWAYS_INLINE void
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404 | set_changed(int i)
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405 | {
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406 | ptes[i].changed = 1;
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407 | }
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408 | #endif /* FEATURE_FDISK_WRITABLE */
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409 |
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410 | static ALWAYS_INLINE struct partition *
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411 | get_part_table(int i)
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412 | {
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413 | return ptes[i].part_table;
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414 | }
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415 |
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416 | static const char *
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417 | str_units(int n)
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418 | { /* n==1: use singular */
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419 | if (n == 1)
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420 | return display_in_cyl_units ? "cylinder" : "sector";
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421 | return display_in_cyl_units ? "cylinders" : "sectors";
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422 | }
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423 |
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424 | static int
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425 | valid_part_table_flag(const char *mbuffer)
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426 | {
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---|
427 | return (mbuffer[510] == 0x55 && (uint8_t)mbuffer[511] == 0xaa);
|
---|
428 | }
|
---|
429 |
|
---|
430 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
431 | static ALWAYS_INLINE void
|
---|
432 | write_part_table_flag(char *b)
|
---|
433 | {
|
---|
434 | b[510] = 0x55;
|
---|
435 | b[511] = 0xaa;
|
---|
436 | }
|
---|
437 |
|
---|
438 | static char
|
---|
439 | read_nonempty(const char *mesg)
|
---|
440 | {
|
---|
441 | while (!read_line(mesg)) /* repeat */;
|
---|
442 | return *line_ptr;
|
---|
443 | }
|
---|
444 |
|
---|
445 | static char
|
---|
446 | read_maybe_empty(const char *mesg)
|
---|
447 | {
|
---|
448 | if (!read_line(mesg)) {
|
---|
449 | line_ptr = line_buffer;
|
---|
450 | line_ptr[0] = '\n';
|
---|
451 | line_ptr[1] = '\0';
|
---|
452 | }
|
---|
453 | return line_ptr[0];
|
---|
454 | }
|
---|
455 |
|
---|
456 | static int
|
---|
457 | read_hex(const char *const *sys)
|
---|
458 | {
|
---|
459 | unsigned long v;
|
---|
460 | while (1) {
|
---|
461 | read_nonempty("Hex code (type L to list codes): ");
|
---|
462 | if (*line_ptr == 'l' || *line_ptr == 'L') {
|
---|
463 | list_types(sys);
|
---|
464 | continue;
|
---|
465 | }
|
---|
466 | v = bb_strtoul(line_ptr, NULL, 16);
|
---|
467 | if (v > 0xff)
|
---|
468 | /* Bad input also triggers this */
|
---|
469 | continue;
|
---|
470 | return v;
|
---|
471 | }
|
---|
472 | }
|
---|
473 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
474 |
|
---|
475 | #include "fdisk_aix.c"
|
---|
476 |
|
---|
477 | typedef struct {
|
---|
478 | unsigned char info[128]; /* Informative text string */
|
---|
479 | unsigned char spare0[14];
|
---|
480 | struct sun_info {
|
---|
481 | unsigned char spare1;
|
---|
482 | unsigned char id;
|
---|
483 | unsigned char spare2;
|
---|
484 | unsigned char flags;
|
---|
485 | } infos[8];
|
---|
486 | unsigned char spare1[246]; /* Boot information etc. */
|
---|
487 | unsigned short rspeed; /* Disk rotational speed */
|
---|
488 | unsigned short pcylcount; /* Physical cylinder count */
|
---|
489 | unsigned short sparecyl; /* extra sects per cylinder */
|
---|
490 | unsigned char spare2[4]; /* More magic... */
|
---|
491 | unsigned short ilfact; /* Interleave factor */
|
---|
492 | unsigned short ncyl; /* Data cylinder count */
|
---|
493 | unsigned short nacyl; /* Alt. cylinder count */
|
---|
494 | unsigned short ntrks; /* Tracks per cylinder */
|
---|
495 | unsigned short nsect; /* Sectors per track */
|
---|
496 | unsigned char spare3[4]; /* Even more magic... */
|
---|
497 | struct sun_partinfo {
|
---|
498 | uint32_t start_cylinder;
|
---|
499 | uint32_t num_sectors;
|
---|
500 | } partitions[8];
|
---|
501 | unsigned short magic; /* Magic number */
|
---|
502 | unsigned short csum; /* Label xor'd checksum */
|
---|
503 | } sun_partition;
|
---|
504 | #define sunlabel ((sun_partition *)MBRbuffer)
|
---|
505 | STATIC_OSF void bsd_select(void);
|
---|
506 | STATIC_OSF void xbsd_print_disklabel(int);
|
---|
507 | #include "fdisk_osf.c"
|
---|
508 |
|
---|
509 | #if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL
|
---|
510 | static uint16_t
|
---|
511 | fdisk_swap16(uint16_t x)
|
---|
512 | {
|
---|
513 | return (x << 8) | (x >> 8);
|
---|
514 | }
|
---|
515 |
|
---|
516 | static uint32_t
|
---|
517 | fdisk_swap32(uint32_t x)
|
---|
518 | {
|
---|
519 | return (x << 24) |
|
---|
520 | ((x & 0xFF00) << 8) |
|
---|
521 | ((x & 0xFF0000) >> 8) |
|
---|
522 | (x >> 24);
|
---|
523 | }
|
---|
524 | #endif
|
---|
525 |
|
---|
526 | STATIC_SGI const char *const sgi_sys_types[];
|
---|
527 | STATIC_SGI unsigned sgi_get_num_sectors(int i);
|
---|
528 | STATIC_SGI int sgi_get_sysid(int i);
|
---|
529 | STATIC_SGI void sgi_delete_partition(int i);
|
---|
530 | STATIC_SGI void sgi_change_sysid(int i, int sys);
|
---|
531 | STATIC_SGI void sgi_list_table(int xtra);
|
---|
532 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
533 | STATIC_SGI void sgi_set_xcyl(void);
|
---|
534 | #endif
|
---|
535 | STATIC_SGI int verify_sgi(int verbose);
|
---|
536 | STATIC_SGI void sgi_add_partition(int n, int sys);
|
---|
537 | STATIC_SGI void sgi_set_swappartition(int i);
|
---|
538 | STATIC_SGI const char *sgi_get_bootfile(void);
|
---|
539 | STATIC_SGI void sgi_set_bootfile(const char* aFile);
|
---|
540 | STATIC_SGI void create_sgiinfo(void);
|
---|
541 | STATIC_SGI void sgi_write_table(void);
|
---|
542 | STATIC_SGI void sgi_set_bootpartition(int i);
|
---|
543 | #include "fdisk_sgi.c"
|
---|
544 |
|
---|
545 | STATIC_SUN const char *const sun_sys_types[];
|
---|
546 | STATIC_SUN void sun_delete_partition(int i);
|
---|
547 | STATIC_SUN void sun_change_sysid(int i, int sys);
|
---|
548 | STATIC_SUN void sun_list_table(int xtra);
|
---|
549 | STATIC_SUN void add_sun_partition(int n, int sys);
|
---|
550 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
551 | STATIC_SUN void sun_set_alt_cyl(void);
|
---|
552 | STATIC_SUN void sun_set_ncyl(int cyl);
|
---|
553 | STATIC_SUN void sun_set_xcyl(void);
|
---|
554 | STATIC_SUN void sun_set_ilfact(void);
|
---|
555 | STATIC_SUN void sun_set_rspeed(void);
|
---|
556 | STATIC_SUN void sun_set_pcylcount(void);
|
---|
557 | #endif
|
---|
558 | STATIC_SUN void toggle_sunflags(int i, unsigned char mask);
|
---|
559 | STATIC_SUN void verify_sun(void);
|
---|
560 | STATIC_SUN void sun_write_table(void);
|
---|
561 | #include "fdisk_sun.c"
|
---|
562 |
|
---|
563 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
564 | /* start_sect and nr_sects are stored little endian on all machines */
|
---|
565 | /* moreover, they are not aligned correctly */
|
---|
566 | static void
|
---|
567 | store4_little_endian(unsigned char *cp, unsigned val)
|
---|
568 | {
|
---|
569 | cp[0] = val;
|
---|
570 | cp[1] = val >> 8;
|
---|
571 | cp[2] = val >> 16;
|
---|
572 | cp[3] = val >> 24;
|
---|
573 | }
|
---|
574 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
575 |
|
---|
576 | static unsigned
|
---|
577 | read4_little_endian(const unsigned char *cp)
|
---|
578 | {
|
---|
579 | return cp[0] + (cp[1] << 8) + (cp[2] << 16) + (cp[3] << 24);
|
---|
580 | }
|
---|
581 |
|
---|
582 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
583 | static void
|
---|
584 | set_start_sect(struct partition *p, unsigned start_sect)
|
---|
585 | {
|
---|
586 | store4_little_endian(p->start4, start_sect);
|
---|
587 | }
|
---|
588 | #endif
|
---|
589 |
|
---|
590 | static unsigned
|
---|
591 | get_start_sect(const struct partition *p)
|
---|
592 | {
|
---|
593 | return read4_little_endian(p->start4);
|
---|
594 | }
|
---|
595 |
|
---|
596 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
597 | static void
|
---|
598 | set_nr_sects(struct partition *p, unsigned nr_sects)
|
---|
599 | {
|
---|
600 | store4_little_endian(p->size4, nr_sects);
|
---|
601 | }
|
---|
602 | #endif
|
---|
603 |
|
---|
604 | static unsigned
|
---|
605 | get_nr_sects(const struct partition *p)
|
---|
606 | {
|
---|
607 | return read4_little_endian(p->size4);
|
---|
608 | }
|
---|
609 |
|
---|
610 | /* normally O_RDWR, -l option gives O_RDONLY */
|
---|
611 | static int type_open = O_RDWR;
|
---|
612 |
|
---|
613 | static int ext_index; /* the prime extended partition */
|
---|
614 | static int listing; /* no aborts for fdisk -l */
|
---|
615 | static int dos_compatible_flag = ~0;
|
---|
616 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
617 | static int dos_changed;
|
---|
618 | static int nowarn; /* no warnings for fdisk -l/-s */
|
---|
619 | #endif
|
---|
620 |
|
---|
621 | static unsigned user_cylinders, user_heads, user_sectors;
|
---|
622 | static unsigned pt_heads, pt_sectors;
|
---|
623 | static unsigned kern_heads, kern_sectors;
|
---|
624 |
|
---|
625 | static ullong extended_offset; /* offset of link pointers */
|
---|
626 | static ullong total_number_of_sectors;
|
---|
627 |
|
---|
628 | static void fdisk_fatal(const char *why)
|
---|
629 | {
|
---|
630 | if (listing) {
|
---|
631 | close(fd);
|
---|
632 | longjmp(listingbuf, 1);
|
---|
633 | }
|
---|
634 | bb_error_msg_and_die(why, disk_device);
|
---|
635 | }
|
---|
636 |
|
---|
637 | static void
|
---|
638 | seek_sector(ullong secno)
|
---|
639 | {
|
---|
640 | secno *= sector_size;
|
---|
641 | #if ENABLE_FDISK_SUPPORT_LARGE_DISKS
|
---|
642 | if (lseek64(fd, (off64_t)secno, SEEK_SET) == (off64_t) -1)
|
---|
643 | fdisk_fatal(unable_to_seek);
|
---|
644 | #else
|
---|
645 | if (secno > MAXINT(off_t)
|
---|
646 | || lseek(fd, (off_t)secno, SEEK_SET) == (off_t) -1
|
---|
647 | ) {
|
---|
648 | fdisk_fatal(unable_to_seek);
|
---|
649 | }
|
---|
650 | #endif
|
---|
651 | }
|
---|
652 |
|
---|
653 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
654 | static void
|
---|
655 | write_sector(ullong secno, char *buf)
|
---|
656 | {
|
---|
657 | seek_sector(secno);
|
---|
658 | if (write(fd, buf, sector_size) != sector_size)
|
---|
659 | fdisk_fatal(unable_to_write);
|
---|
660 | }
|
---|
661 | #endif
|
---|
662 |
|
---|
663 | /* Allocate a buffer and read a partition table sector */
|
---|
664 | static void
|
---|
665 | read_pte(struct pte *pe, ullong offset)
|
---|
666 | {
|
---|
667 | pe->offset = offset;
|
---|
668 | pe->sectorbuffer = xmalloc(sector_size);
|
---|
669 | seek_sector(offset);
|
---|
670 | if (read(fd, pe->sectorbuffer, sector_size) != sector_size)
|
---|
671 | fdisk_fatal(unable_to_read);
|
---|
672 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
673 | pe->changed = 0;
|
---|
674 | #endif
|
---|
675 | pe->part_table = pe->ext_pointer = NULL;
|
---|
676 | }
|
---|
677 |
|
---|
678 | static unsigned
|
---|
679 | get_partition_start(const struct pte *pe)
|
---|
680 | {
|
---|
681 | return pe->offset + get_start_sect(pe->part_table);
|
---|
682 | }
|
---|
683 |
|
---|
684 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
685 | /*
|
---|
686 | * Avoid warning about DOS partitions when no DOS partition was changed.
|
---|
687 | * Here a heuristic "is probably dos partition".
|
---|
688 | * We might also do the opposite and warn in all cases except
|
---|
689 | * for "is probably nondos partition".
|
---|
690 | */
|
---|
691 | static int
|
---|
692 | is_dos_partition(int t)
|
---|
693 | {
|
---|
694 | return (t == 1 || t == 4 || t == 6 ||
|
---|
695 | t == 0x0b || t == 0x0c || t == 0x0e ||
|
---|
696 | t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 ||
|
---|
697 | t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 ||
|
---|
698 | t == 0xc1 || t == 0xc4 || t == 0xc6);
|
---|
699 | }
|
---|
700 |
|
---|
701 | static void
|
---|
702 | menu(void)
|
---|
703 | {
|
---|
704 | puts("Command Action");
|
---|
705 | if (LABEL_IS_SUN) {
|
---|
706 | puts("a\ttoggle a read only flag"); /* sun */
|
---|
707 | puts("b\tedit bsd disklabel");
|
---|
708 | puts("c\ttoggle the mountable flag"); /* sun */
|
---|
709 | puts("d\tdelete a partition");
|
---|
710 | puts("l\tlist known partition types");
|
---|
711 | puts("n\tadd a new partition");
|
---|
712 | puts("o\tcreate a new empty DOS partition table");
|
---|
713 | puts("p\tprint the partition table");
|
---|
714 | puts("q\tquit without saving changes");
|
---|
715 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
716 | puts("t\tchange a partition's system id");
|
---|
717 | puts("u\tchange display/entry units");
|
---|
718 | puts("v\tverify the partition table");
|
---|
719 | puts("w\twrite table to disk and exit");
|
---|
720 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
721 | puts("x\textra functionality (experts only)");
|
---|
722 | #endif
|
---|
723 | } else if (LABEL_IS_SGI) {
|
---|
724 | puts("a\tselect bootable partition"); /* sgi flavour */
|
---|
725 | puts("b\tedit bootfile entry"); /* sgi */
|
---|
726 | puts("c\tselect sgi swap partition"); /* sgi flavour */
|
---|
727 | puts("d\tdelete a partition");
|
---|
728 | puts("l\tlist known partition types");
|
---|
729 | puts("n\tadd a new partition");
|
---|
730 | puts("o\tcreate a new empty DOS partition table");
|
---|
731 | puts("p\tprint the partition table");
|
---|
732 | puts("q\tquit without saving changes");
|
---|
733 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
734 | puts("t\tchange a partition's system id");
|
---|
735 | puts("u\tchange display/entry units");
|
---|
736 | puts("v\tverify the partition table");
|
---|
737 | puts("w\twrite table to disk and exit");
|
---|
738 | } else if (LABEL_IS_AIX) {
|
---|
739 | puts("o\tcreate a new empty DOS partition table");
|
---|
740 | puts("q\tquit without saving changes");
|
---|
741 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
742 | } else {
|
---|
743 | puts("a\ttoggle a bootable flag");
|
---|
744 | puts("b\tedit bsd disklabel");
|
---|
745 | puts("c\ttoggle the dos compatibility flag");
|
---|
746 | puts("d\tdelete a partition");
|
---|
747 | puts("l\tlist known partition types");
|
---|
748 | puts("n\tadd a new partition");
|
---|
749 | puts("o\tcreate a new empty DOS partition table");
|
---|
750 | puts("p\tprint the partition table");
|
---|
751 | puts("q\tquit without saving changes");
|
---|
752 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
753 | puts("t\tchange a partition's system id");
|
---|
754 | puts("u\tchange display/entry units");
|
---|
755 | puts("v\tverify the partition table");
|
---|
756 | puts("w\twrite table to disk and exit");
|
---|
757 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
758 | puts("x\textra functionality (experts only)");
|
---|
759 | #endif
|
---|
760 | }
|
---|
761 | }
|
---|
762 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
763 |
|
---|
764 |
|
---|
765 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
766 | static void
|
---|
767 | xmenu(void)
|
---|
768 | {
|
---|
769 | puts("Command Action");
|
---|
770 | if (LABEL_IS_SUN) {
|
---|
771 | puts("a\tchange number of alternate cylinders"); /*sun*/
|
---|
772 | puts("c\tchange number of cylinders");
|
---|
773 | puts("d\tprint the raw data in the partition table");
|
---|
774 | puts("e\tchange number of extra sectors per cylinder");/*sun*/
|
---|
775 | puts("h\tchange number of heads");
|
---|
776 | puts("i\tchange interleave factor"); /*sun*/
|
---|
777 | puts("o\tchange rotation speed (rpm)"); /*sun*/
|
---|
778 | puts("p\tprint the partition table");
|
---|
779 | puts("q\tquit without saving changes");
|
---|
780 | puts("r\treturn to main menu");
|
---|
781 | puts("s\tchange number of sectors/track");
|
---|
782 | puts("v\tverify the partition table");
|
---|
783 | puts("w\twrite table to disk and exit");
|
---|
784 | puts("y\tchange number of physical cylinders"); /*sun*/
|
---|
785 | } else if (LABEL_IS_SGI) {
|
---|
786 | puts("b\tmove beginning of data in a partition"); /* !sun */
|
---|
787 | puts("c\tchange number of cylinders");
|
---|
788 | puts("d\tprint the raw data in the partition table");
|
---|
789 | puts("e\tlist extended partitions"); /* !sun */
|
---|
790 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */
|
---|
791 | puts("h\tchange number of heads");
|
---|
792 | puts("p\tprint the partition table");
|
---|
793 | puts("q\tquit without saving changes");
|
---|
794 | puts("r\treturn to main menu");
|
---|
795 | puts("s\tchange number of sectors/track");
|
---|
796 | puts("v\tverify the partition table");
|
---|
797 | puts("w\twrite table to disk and exit");
|
---|
798 | } else if (LABEL_IS_AIX) {
|
---|
799 | puts("b\tmove beginning of data in a partition"); /* !sun */
|
---|
800 | puts("c\tchange number of cylinders");
|
---|
801 | puts("d\tprint the raw data in the partition table");
|
---|
802 | puts("e\tlist extended partitions"); /* !sun */
|
---|
803 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */
|
---|
804 | puts("h\tchange number of heads");
|
---|
805 | puts("p\tprint the partition table");
|
---|
806 | puts("q\tquit without saving changes");
|
---|
807 | puts("r\treturn to main menu");
|
---|
808 | puts("s\tchange number of sectors/track");
|
---|
809 | puts("v\tverify the partition table");
|
---|
810 | puts("w\twrite table to disk and exit");
|
---|
811 | } else {
|
---|
812 | puts("b\tmove beginning of data in a partition"); /* !sun */
|
---|
813 | puts("c\tchange number of cylinders");
|
---|
814 | puts("d\tprint the raw data in the partition table");
|
---|
815 | puts("e\tlist extended partitions"); /* !sun */
|
---|
816 | puts("f\tfix partition order"); /* !sun, !aix, !sgi */
|
---|
817 | #if ENABLE_FEATURE_SGI_LABEL
|
---|
818 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */
|
---|
819 | #endif
|
---|
820 | puts("h\tchange number of heads");
|
---|
821 | puts("p\tprint the partition table");
|
---|
822 | puts("q\tquit without saving changes");
|
---|
823 | puts("r\treturn to main menu");
|
---|
824 | puts("s\tchange number of sectors/track");
|
---|
825 | puts("v\tverify the partition table");
|
---|
826 | puts("w\twrite table to disk and exit");
|
---|
827 | }
|
---|
828 | }
|
---|
829 | #endif /* ADVANCED mode */
|
---|
830 |
|
---|
831 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
832 | static const char *const *
|
---|
833 | get_sys_types(void)
|
---|
834 | {
|
---|
835 | return (
|
---|
836 | LABEL_IS_SUN ? sun_sys_types :
|
---|
837 | LABEL_IS_SGI ? sgi_sys_types :
|
---|
838 | i386_sys_types);
|
---|
839 | }
|
---|
840 | #else
|
---|
841 | #define get_sys_types() i386_sys_types
|
---|
842 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
843 |
|
---|
844 | static const char *
|
---|
845 | partition_type(unsigned char type)
|
---|
846 | {
|
---|
847 | int i;
|
---|
848 | const char *const *types = get_sys_types();
|
---|
849 |
|
---|
850 | for (i = 0; types[i]; i++)
|
---|
851 | if ((unsigned char)types[i][0] == type)
|
---|
852 | return types[i] + 1;
|
---|
853 |
|
---|
854 | return "Unknown";
|
---|
855 | }
|
---|
856 |
|
---|
857 |
|
---|
858 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
859 | static int
|
---|
860 | get_sysid(int i)
|
---|
861 | {
|
---|
862 | return LABEL_IS_SUN ? sunlabel->infos[i].id :
|
---|
863 | (LABEL_IS_SGI ? sgi_get_sysid(i) :
|
---|
864 | ptes[i].part_table->sys_ind);
|
---|
865 | }
|
---|
866 |
|
---|
867 | static void
|
---|
868 | list_types(const char *const *sys)
|
---|
869 | {
|
---|
870 | enum { COLS = 3 };
|
---|
871 |
|
---|
872 | unsigned last[COLS];
|
---|
873 | unsigned done, next, size;
|
---|
874 | int i;
|
---|
875 |
|
---|
876 | for (size = 0; sys[size]; size++) /* */;
|
---|
877 |
|
---|
878 | done = 0;
|
---|
879 | for (i = COLS-1; i >= 0; i--) {
|
---|
880 | done += (size + i - done) / (i + 1);
|
---|
881 | last[COLS-1 - i] = done;
|
---|
882 | }
|
---|
883 |
|
---|
884 | i = done = next = 0;
|
---|
885 | do {
|
---|
886 | printf("%c%2x %-22.22s", i ? ' ' : '\n',
|
---|
887 | (unsigned char)sys[next][0],
|
---|
888 | sys[next] + 1);
|
---|
889 | next = last[i++] + done;
|
---|
890 | if (i >= COLS || next >= last[i]) {
|
---|
891 | i = 0;
|
---|
892 | next = ++done;
|
---|
893 | }
|
---|
894 | } while (done < last[0]);
|
---|
895 | putchar('\n');
|
---|
896 | }
|
---|
897 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
898 |
|
---|
899 | static int
|
---|
900 | is_cleared_partition(const struct partition *p)
|
---|
901 | {
|
---|
902 | return !(!p || p->boot_ind || p->head || p->sector || p->cyl ||
|
---|
903 | p->sys_ind || p->end_head || p->end_sector || p->end_cyl ||
|
---|
904 | get_start_sect(p) || get_nr_sects(p));
|
---|
905 | }
|
---|
906 |
|
---|
907 | static void
|
---|
908 | clear_partition(struct partition *p)
|
---|
909 | {
|
---|
910 | if (!p)
|
---|
911 | return;
|
---|
912 | memset(p, 0, sizeof(struct partition));
|
---|
913 | }
|
---|
914 |
|
---|
915 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
916 | static void
|
---|
917 | set_partition(int i, int doext, ullong start, ullong stop, int sysid)
|
---|
918 | {
|
---|
919 | struct partition *p;
|
---|
920 | ullong offset;
|
---|
921 |
|
---|
922 | if (doext) {
|
---|
923 | p = ptes[i].ext_pointer;
|
---|
924 | offset = extended_offset;
|
---|
925 | } else {
|
---|
926 | p = ptes[i].part_table;
|
---|
927 | offset = ptes[i].offset;
|
---|
928 | }
|
---|
929 | p->boot_ind = 0;
|
---|
930 | p->sys_ind = sysid;
|
---|
931 | set_start_sect(p, start - offset);
|
---|
932 | set_nr_sects(p, stop - start + 1);
|
---|
933 | if (dos_compatible_flag && (start/(sectors*heads) > 1023))
|
---|
934 | start = heads*sectors*1024 - 1;
|
---|
935 | set_hsc(p->head, p->sector, p->cyl, start);
|
---|
936 | if (dos_compatible_flag && (stop/(sectors*heads) > 1023))
|
---|
937 | stop = heads*sectors*1024 - 1;
|
---|
938 | set_hsc(p->end_head, p->end_sector, p->end_cyl, stop);
|
---|
939 | ptes[i].changed = 1;
|
---|
940 | }
|
---|
941 | #endif
|
---|
942 |
|
---|
943 | static int
|
---|
944 | warn_geometry(void)
|
---|
945 | {
|
---|
946 | if (heads && sectors && cylinders)
|
---|
947 | return 0;
|
---|
948 |
|
---|
949 | printf("Unknown value(s) for:");
|
---|
950 | if (!heads)
|
---|
951 | printf(" heads");
|
---|
952 | if (!sectors)
|
---|
953 | printf(" sectors");
|
---|
954 | if (!cylinders)
|
---|
955 | printf(" cylinders");
|
---|
956 | printf(
|
---|
957 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
958 | " (settable in the extra functions menu)"
|
---|
959 | #endif
|
---|
960 | "\n");
|
---|
961 | return 1;
|
---|
962 | }
|
---|
963 |
|
---|
964 | static void
|
---|
965 | update_units(void)
|
---|
966 | {
|
---|
967 | int cyl_units = heads * sectors;
|
---|
968 |
|
---|
969 | if (display_in_cyl_units && cyl_units)
|
---|
970 | units_per_sector = cyl_units;
|
---|
971 | else
|
---|
972 | units_per_sector = 1; /* in sectors */
|
---|
973 | }
|
---|
974 |
|
---|
975 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
976 | static void
|
---|
977 | warn_cylinders(void)
|
---|
978 | {
|
---|
979 | if (LABEL_IS_DOS && cylinders > 1024 && !nowarn)
|
---|
980 | printf("\n"
|
---|
981 | "The number of cylinders for this disk is set to %d.\n"
|
---|
982 | "There is nothing wrong with that, but this is larger than 1024,\n"
|
---|
983 | "and could in certain setups cause problems with:\n"
|
---|
984 | "1) software that runs at boot time (e.g., old versions of LILO)\n"
|
---|
985 | "2) booting and partitioning software from other OSs\n"
|
---|
986 | " (e.g., DOS FDISK, OS/2 FDISK)\n",
|
---|
987 | cylinders);
|
---|
988 | }
|
---|
989 | #endif
|
---|
990 |
|
---|
991 | static void
|
---|
992 | read_extended(int ext)
|
---|
993 | {
|
---|
994 | int i;
|
---|
995 | struct pte *pex;
|
---|
996 | struct partition *p, *q;
|
---|
997 |
|
---|
998 | ext_index = ext;
|
---|
999 | pex = &ptes[ext];
|
---|
1000 | pex->ext_pointer = pex->part_table;
|
---|
1001 |
|
---|
1002 | p = pex->part_table;
|
---|
1003 | if (!get_start_sect(p)) {
|
---|
1004 | printf("Bad offset in primary extended partition\n");
|
---|
1005 | return;
|
---|
1006 | }
|
---|
1007 |
|
---|
1008 | while (IS_EXTENDED(p->sys_ind)) {
|
---|
1009 | struct pte *pe = &ptes[partitions];
|
---|
1010 |
|
---|
1011 | if (partitions >= MAXIMUM_PARTS) {
|
---|
1012 | /* This is not a Linux restriction, but
|
---|
1013 | this program uses arrays of size MAXIMUM_PARTS.
|
---|
1014 | Do not try to 'improve' this test. */
|
---|
1015 | struct pte *pre = &ptes[partitions-1];
|
---|
1016 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1017 | printf("Warning: deleting partitions after %d\n",
|
---|
1018 | partitions);
|
---|
1019 | pre->changed = 1;
|
---|
1020 | #endif
|
---|
1021 | clear_partition(pre->ext_pointer);
|
---|
1022 | return;
|
---|
1023 | }
|
---|
1024 |
|
---|
1025 | read_pte(pe, extended_offset + get_start_sect(p));
|
---|
1026 |
|
---|
1027 | if (!extended_offset)
|
---|
1028 | extended_offset = get_start_sect(p);
|
---|
1029 |
|
---|
1030 | q = p = pt_offset(pe->sectorbuffer, 0);
|
---|
1031 | for (i = 0; i < 4; i++, p++) if (get_nr_sects(p)) {
|
---|
1032 | if (IS_EXTENDED(p->sys_ind)) {
|
---|
1033 | if (pe->ext_pointer)
|
---|
1034 | printf("Warning: extra link "
|
---|
1035 | "pointer in partition table"
|
---|
1036 | " %d\n", partitions + 1);
|
---|
1037 | else
|
---|
1038 | pe->ext_pointer = p;
|
---|
1039 | } else if (p->sys_ind) {
|
---|
1040 | if (pe->part_table)
|
---|
1041 | printf("Warning: ignoring extra "
|
---|
1042 | "data in partition table"
|
---|
1043 | " %d\n", partitions + 1);
|
---|
1044 | else
|
---|
1045 | pe->part_table = p;
|
---|
1046 | }
|
---|
1047 | }
|
---|
1048 |
|
---|
1049 | /* very strange code here... */
|
---|
1050 | if (!pe->part_table) {
|
---|
1051 | if (q != pe->ext_pointer)
|
---|
1052 | pe->part_table = q;
|
---|
1053 | else
|
---|
1054 | pe->part_table = q + 1;
|
---|
1055 | }
|
---|
1056 | if (!pe->ext_pointer) {
|
---|
1057 | if (q != pe->part_table)
|
---|
1058 | pe->ext_pointer = q;
|
---|
1059 | else
|
---|
1060 | pe->ext_pointer = q + 1;
|
---|
1061 | }
|
---|
1062 |
|
---|
1063 | p = pe->ext_pointer;
|
---|
1064 | partitions++;
|
---|
1065 | }
|
---|
1066 |
|
---|
1067 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1068 | /* remove empty links */
|
---|
1069 | remove:
|
---|
1070 | for (i = 4; i < partitions; i++) {
|
---|
1071 | struct pte *pe = &ptes[i];
|
---|
1072 |
|
---|
1073 | if (!get_nr_sects(pe->part_table)
|
---|
1074 | && (partitions > 5 || ptes[4].part_table->sys_ind)
|
---|
1075 | ) {
|
---|
1076 | printf("Omitting empty partition (%d)\n", i+1);
|
---|
1077 | delete_partition(i);
|
---|
1078 | goto remove; /* numbering changed */
|
---|
1079 | }
|
---|
1080 | }
|
---|
1081 | #endif
|
---|
1082 | }
|
---|
1083 |
|
---|
1084 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1085 | static void
|
---|
1086 | create_doslabel(void)
|
---|
1087 | {
|
---|
1088 | int i;
|
---|
1089 |
|
---|
1090 | printf(msg_building_new_label, "DOS disklabel");
|
---|
1091 |
|
---|
1092 | current_label_type = label_dos;
|
---|
1093 |
|
---|
1094 | #if ENABLE_FEATURE_OSF_LABEL
|
---|
1095 | possibly_osf_label = 0;
|
---|
1096 | #endif
|
---|
1097 | partitions = 4;
|
---|
1098 |
|
---|
1099 | for (i = 510-64; i < 510; i++)
|
---|
1100 | MBRbuffer[i] = 0;
|
---|
1101 | write_part_table_flag(MBRbuffer);
|
---|
1102 | extended_offset = 0;
|
---|
1103 | set_all_unchanged();
|
---|
1104 | set_changed(0);
|
---|
1105 | get_boot(create_empty_dos);
|
---|
1106 | }
|
---|
1107 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
1108 |
|
---|
1109 | static void
|
---|
1110 | get_sectorsize(void)
|
---|
1111 | {
|
---|
1112 | if (!user_set_sector_size) {
|
---|
1113 | int arg;
|
---|
1114 | if (ioctl(fd, BLKSSZGET, &arg) == 0)
|
---|
1115 | sector_size = arg;
|
---|
1116 | if (sector_size != DEFAULT_SECTOR_SIZE)
|
---|
1117 | printf("Note: sector size is %d (not %d)\n",
|
---|
1118 | sector_size, DEFAULT_SECTOR_SIZE);
|
---|
1119 | }
|
---|
1120 | }
|
---|
1121 |
|
---|
1122 | static void
|
---|
1123 | get_kernel_geometry(void)
|
---|
1124 | {
|
---|
1125 | struct hd_geometry geometry;
|
---|
1126 |
|
---|
1127 | if (!ioctl(fd, HDIO_GETGEO, &geometry)) {
|
---|
1128 | kern_heads = geometry.heads;
|
---|
1129 | kern_sectors = geometry.sectors;
|
---|
1130 | /* never use geometry.cylinders - it is truncated */
|
---|
1131 | }
|
---|
1132 | }
|
---|
1133 |
|
---|
1134 | static void
|
---|
1135 | get_partition_table_geometry(void)
|
---|
1136 | {
|
---|
1137 | const unsigned char *bufp = (const unsigned char *)MBRbuffer;
|
---|
1138 | struct partition *p;
|
---|
1139 | int i, h, s, hh, ss;
|
---|
1140 | int first = 1;
|
---|
1141 | int bad = 0;
|
---|
1142 |
|
---|
1143 | if (!(valid_part_table_flag((char*)bufp)))
|
---|
1144 | return;
|
---|
1145 |
|
---|
1146 | hh = ss = 0;
|
---|
1147 | for (i = 0; i < 4; i++) {
|
---|
1148 | p = pt_offset(bufp, i);
|
---|
1149 | if (p->sys_ind != 0) {
|
---|
1150 | h = p->end_head + 1;
|
---|
1151 | s = (p->end_sector & 077);
|
---|
1152 | if (first) {
|
---|
1153 | hh = h;
|
---|
1154 | ss = s;
|
---|
1155 | first = 0;
|
---|
1156 | } else if (hh != h || ss != s)
|
---|
1157 | bad = 1;
|
---|
1158 | }
|
---|
1159 | }
|
---|
1160 |
|
---|
1161 | if (!first && !bad) {
|
---|
1162 | pt_heads = hh;
|
---|
1163 | pt_sectors = ss;
|
---|
1164 | }
|
---|
1165 | }
|
---|
1166 |
|
---|
1167 | static void
|
---|
1168 | get_geometry(void)
|
---|
1169 | {
|
---|
1170 | int sec_fac;
|
---|
1171 | uint64_t v64;
|
---|
1172 |
|
---|
1173 | get_sectorsize();
|
---|
1174 | sec_fac = sector_size / 512;
|
---|
1175 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
1176 | guess_device_type();
|
---|
1177 | #endif
|
---|
1178 | heads = cylinders = sectors = 0;
|
---|
1179 | kern_heads = kern_sectors = 0;
|
---|
1180 | pt_heads = pt_sectors = 0;
|
---|
1181 |
|
---|
1182 | get_kernel_geometry();
|
---|
1183 | get_partition_table_geometry();
|
---|
1184 |
|
---|
1185 | heads = user_heads ? user_heads :
|
---|
1186 | pt_heads ? pt_heads :
|
---|
1187 | kern_heads ? kern_heads : 255;
|
---|
1188 | sectors = user_sectors ? user_sectors :
|
---|
1189 | pt_sectors ? pt_sectors :
|
---|
1190 | kern_sectors ? kern_sectors : 63;
|
---|
1191 | if (ioctl(fd, BLKGETSIZE64, &v64) == 0) {
|
---|
1192 | /* got bytes, convert to 512 byte sectors */
|
---|
1193 | total_number_of_sectors = (v64 >> 9);
|
---|
1194 | } else {
|
---|
1195 | unsigned long longsectors; /* need temp of type long */
|
---|
1196 | if (ioctl(fd, BLKGETSIZE, &longsectors))
|
---|
1197 | longsectors = 0;
|
---|
1198 | total_number_of_sectors = longsectors;
|
---|
1199 | }
|
---|
1200 |
|
---|
1201 | sector_offset = 1;
|
---|
1202 | if (dos_compatible_flag)
|
---|
1203 | sector_offset = sectors;
|
---|
1204 |
|
---|
1205 | cylinders = total_number_of_sectors / (heads * sectors * sec_fac);
|
---|
1206 | if (!cylinders)
|
---|
1207 | cylinders = user_cylinders;
|
---|
1208 | }
|
---|
1209 |
|
---|
1210 | /*
|
---|
1211 | * Read MBR. Returns:
|
---|
1212 | * -1: no 0xaa55 flag present (possibly entire disk BSD)
|
---|
1213 | * 0: found or created label
|
---|
1214 | * 1: I/O error
|
---|
1215 | */
|
---|
1216 | static int
|
---|
1217 | get_boot(enum action what)
|
---|
1218 | {
|
---|
1219 | int i;
|
---|
1220 |
|
---|
1221 | partitions = 4;
|
---|
1222 |
|
---|
1223 | for (i = 0; i < 4; i++) {
|
---|
1224 | struct pte *pe = &ptes[i];
|
---|
1225 |
|
---|
1226 | pe->part_table = pt_offset(MBRbuffer, i);
|
---|
1227 | pe->ext_pointer = NULL;
|
---|
1228 | pe->offset = 0;
|
---|
1229 | pe->sectorbuffer = MBRbuffer;
|
---|
1230 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1231 | pe->changed = (what == create_empty_dos);
|
---|
1232 | #endif
|
---|
1233 | }
|
---|
1234 |
|
---|
1235 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
1236 | if (what == create_empty_sun && check_sun_label())
|
---|
1237 | return 0;
|
---|
1238 | #endif
|
---|
1239 |
|
---|
1240 | memset(MBRbuffer, 0, 512);
|
---|
1241 |
|
---|
1242 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1243 | if (what == create_empty_dos)
|
---|
1244 | goto got_dos_table; /* skip reading disk */
|
---|
1245 |
|
---|
1246 | fd = open(disk_device, type_open);
|
---|
1247 | if (fd < 0) {
|
---|
1248 | fd = open(disk_device, O_RDONLY);
|
---|
1249 | if (fd < 0) {
|
---|
1250 | if (what == try_only)
|
---|
1251 | return 1;
|
---|
1252 | fdisk_fatal(unable_to_open);
|
---|
1253 | } else
|
---|
1254 | printf("You will not be able to write "
|
---|
1255 | "the partition table\n");
|
---|
1256 | }
|
---|
1257 |
|
---|
1258 | if (512 != read(fd, MBRbuffer, 512)) {
|
---|
1259 | if (what == try_only)
|
---|
1260 | return 1;
|
---|
1261 | fdisk_fatal(unable_to_read);
|
---|
1262 | }
|
---|
1263 | #else
|
---|
1264 | fd = open(disk_device, O_RDONLY);
|
---|
1265 | if (fd < 0)
|
---|
1266 | return 1;
|
---|
1267 | if (512 != read(fd, MBRbuffer, 512))
|
---|
1268 | return 1;
|
---|
1269 | #endif
|
---|
1270 |
|
---|
1271 | get_geometry();
|
---|
1272 |
|
---|
1273 | update_units();
|
---|
1274 |
|
---|
1275 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
1276 | if (check_sun_label())
|
---|
1277 | return 0;
|
---|
1278 | #endif
|
---|
1279 |
|
---|
1280 | #if ENABLE_FEATURE_SGI_LABEL
|
---|
1281 | if (check_sgi_label())
|
---|
1282 | return 0;
|
---|
1283 | #endif
|
---|
1284 |
|
---|
1285 | #if ENABLE_FEATURE_AIX_LABEL
|
---|
1286 | if (check_aix_label())
|
---|
1287 | return 0;
|
---|
1288 | #endif
|
---|
1289 |
|
---|
1290 | #if ENABLE_FEATURE_OSF_LABEL
|
---|
1291 | if (check_osf_label()) {
|
---|
1292 | possibly_osf_label = 1;
|
---|
1293 | if (!valid_part_table_flag(MBRbuffer)) {
|
---|
1294 | current_label_type = label_osf;
|
---|
1295 | return 0;
|
---|
1296 | }
|
---|
1297 | printf("This disk has both DOS and BSD magic.\n"
|
---|
1298 | "Give the 'b' command to go to BSD mode.\n");
|
---|
1299 | }
|
---|
1300 | #endif
|
---|
1301 |
|
---|
1302 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1303 | got_dos_table:
|
---|
1304 | #endif
|
---|
1305 |
|
---|
1306 | if (!valid_part_table_flag(MBRbuffer)) {
|
---|
1307 | #if !ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1308 | return -1;
|
---|
1309 | #else
|
---|
1310 | switch (what) {
|
---|
1311 | case fdisk:
|
---|
1312 | printf("Device contains neither a valid DOS "
|
---|
1313 | "partition table, nor Sun, SGI or OSF "
|
---|
1314 | "disklabel\n");
|
---|
1315 | #ifdef __sparc__
|
---|
1316 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
1317 | create_sunlabel();
|
---|
1318 | #endif
|
---|
1319 | #else
|
---|
1320 | create_doslabel();
|
---|
1321 | #endif
|
---|
1322 | return 0;
|
---|
1323 | case try_only:
|
---|
1324 | return -1;
|
---|
1325 | case create_empty_dos:
|
---|
1326 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
1327 | case create_empty_sun:
|
---|
1328 | #endif
|
---|
1329 | break;
|
---|
1330 | default:
|
---|
1331 | bb_error_msg_and_die("internal error");
|
---|
1332 | }
|
---|
1333 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
1334 | }
|
---|
1335 |
|
---|
1336 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1337 | warn_cylinders();
|
---|
1338 | #endif
|
---|
1339 | warn_geometry();
|
---|
1340 |
|
---|
1341 | for (i = 0; i < 4; i++) {
|
---|
1342 | struct pte *pe = &ptes[i];
|
---|
1343 |
|
---|
1344 | if (IS_EXTENDED(pe->part_table->sys_ind)) {
|
---|
1345 | if (partitions != 4)
|
---|
1346 | printf("Ignoring extra extended "
|
---|
1347 | "partition %d\n", i + 1);
|
---|
1348 | else
|
---|
1349 | read_extended(i);
|
---|
1350 | }
|
---|
1351 | }
|
---|
1352 |
|
---|
1353 | for (i = 3; i < partitions; i++) {
|
---|
1354 | struct pte *pe = &ptes[i];
|
---|
1355 |
|
---|
1356 | if (!valid_part_table_flag(pe->sectorbuffer)) {
|
---|
1357 | printf("Warning: invalid flag 0x%02x,0x%02x of partition "
|
---|
1358 | "table %d will be corrected by w(rite)\n",
|
---|
1359 | pe->sectorbuffer[510],
|
---|
1360 | pe->sectorbuffer[511],
|
---|
1361 | i + 1);
|
---|
1362 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1363 | pe->changed = 1;
|
---|
1364 | #endif
|
---|
1365 | }
|
---|
1366 | }
|
---|
1367 |
|
---|
1368 | return 0;
|
---|
1369 | }
|
---|
1370 |
|
---|
1371 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
1372 | /*
|
---|
1373 | * Print the message MESG, then read an integer between LOW and HIGH (inclusive).
|
---|
1374 | * If the user hits Enter, DFLT is returned.
|
---|
1375 | * Answers like +10 are interpreted as offsets from BASE.
|
---|
1376 | *
|
---|
1377 | * There is no default if DFLT is not between LOW and HIGH.
|
---|
1378 | */
|
---|
1379 | static unsigned
|
---|
1380 | read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, const char *mesg)
|
---|
1381 | {
|
---|
1382 | unsigned i;
|
---|
1383 | int default_ok = 1;
|
---|
1384 | const char *fmt = "%s (%u-%u, default %u): ";
|
---|
1385 |
|
---|
1386 | if (dflt < low || dflt > high) {
|
---|
1387 | fmt = "%s (%u-%u): ";
|
---|
1388 | default_ok = 0;
|
---|
1389 | }
|
---|
1390 |
|
---|
1391 | while (1) {
|
---|
1392 | int use_default = default_ok;
|
---|
1393 |
|
---|
1394 | /* ask question and read answer */
|
---|
1395 | do {
|
---|
1396 | printf(fmt, mesg, low, high, dflt);
|
---|
1397 | read_maybe_empty("");
|
---|
1398 | } while (*line_ptr != '\n' && !isdigit(*line_ptr)
|
---|
1399 | && *line_ptr != '-' && *line_ptr != '+');
|
---|
1400 |
|
---|
1401 | if (*line_ptr == '+' || *line_ptr == '-') {
|
---|
1402 | int minus = (*line_ptr == '-');
|
---|
1403 | int absolute = 0;
|
---|
1404 |
|
---|
1405 | i = atoi(line_ptr + 1);
|
---|
1406 |
|
---|
1407 | while (isdigit(*++line_ptr))
|
---|
1408 | use_default = 0;
|
---|
1409 |
|
---|
1410 | switch (*line_ptr) {
|
---|
1411 | case 'c':
|
---|
1412 | case 'C':
|
---|
1413 | if (!display_in_cyl_units)
|
---|
1414 | i *= heads * sectors;
|
---|
1415 | break;
|
---|
1416 | case 'K':
|
---|
1417 | absolute = 1024;
|
---|
1418 | break;
|
---|
1419 | case 'k':
|
---|
1420 | absolute = 1000;
|
---|
1421 | break;
|
---|
1422 | case 'm':
|
---|
1423 | case 'M':
|
---|
1424 | absolute = 1000000;
|
---|
1425 | break;
|
---|
1426 | case 'g':
|
---|
1427 | case 'G':
|
---|
1428 | absolute = 1000000000;
|
---|
1429 | break;
|
---|
1430 | default:
|
---|
1431 | break;
|
---|
1432 | }
|
---|
1433 | if (absolute) {
|
---|
1434 | ullong bytes;
|
---|
1435 | unsigned long unit;
|
---|
1436 |
|
---|
1437 | bytes = (ullong) i * absolute;
|
---|
1438 | unit = sector_size * units_per_sector;
|
---|
1439 | bytes += unit/2; /* round */
|
---|
1440 | bytes /= unit;
|
---|
1441 | i = bytes;
|
---|
1442 | }
|
---|
1443 | if (minus)
|
---|
1444 | i = -i;
|
---|
1445 | i += base;
|
---|
1446 | } else {
|
---|
1447 | i = atoi(line_ptr);
|
---|
1448 | while (isdigit(*line_ptr)) {
|
---|
1449 | line_ptr++;
|
---|
1450 | use_default = 0;
|
---|
1451 | }
|
---|
1452 | }
|
---|
1453 | if (use_default) {
|
---|
1454 | i = dflt;
|
---|
1455 | printf("Using default value %u\n", i);
|
---|
1456 | }
|
---|
1457 | if (i >= low && i <= high)
|
---|
1458 | break;
|
---|
1459 | printf("Value is out of range\n");
|
---|
1460 | }
|
---|
1461 | return i;
|
---|
1462 | }
|
---|
1463 |
|
---|
1464 | static int
|
---|
1465 | get_partition(int warn, int max)
|
---|
1466 | {
|
---|
1467 | struct pte *pe;
|
---|
1468 | int i;
|
---|
1469 |
|
---|
1470 | i = read_int(1, 0, max, 0, "Partition number") - 1;
|
---|
1471 | pe = &ptes[i];
|
---|
1472 |
|
---|
1473 | if (warn) {
|
---|
1474 | if ((!LABEL_IS_SUN && !LABEL_IS_SGI && !pe->part_table->sys_ind)
|
---|
1475 | || (LABEL_IS_SUN && (!sunlabel->partitions[i].num_sectors || !sunlabel->infos[i].id))
|
---|
1476 | || (LABEL_IS_SGI && !sgi_get_num_sectors(i))
|
---|
1477 | ) {
|
---|
1478 | printf("Warning: partition %d has empty type\n", i+1);
|
---|
1479 | }
|
---|
1480 | }
|
---|
1481 | return i;
|
---|
1482 | }
|
---|
1483 |
|
---|
1484 | static int
|
---|
1485 | get_existing_partition(int warn, int max)
|
---|
1486 | {
|
---|
1487 | int pno = -1;
|
---|
1488 | int i;
|
---|
1489 |
|
---|
1490 | for (i = 0; i < max; i++) {
|
---|
1491 | struct pte *pe = &ptes[i];
|
---|
1492 | struct partition *p = pe->part_table;
|
---|
1493 |
|
---|
1494 | if (p && !is_cleared_partition(p)) {
|
---|
1495 | if (pno >= 0)
|
---|
1496 | goto not_unique;
|
---|
1497 | pno = i;
|
---|
1498 | }
|
---|
1499 | }
|
---|
1500 | if (pno >= 0) {
|
---|
1501 | printf("Selected partition %d\n", pno+1);
|
---|
1502 | return pno;
|
---|
1503 | }
|
---|
1504 | printf("No partition is defined yet!\n");
|
---|
1505 | return -1;
|
---|
1506 |
|
---|
1507 | not_unique:
|
---|
1508 | return get_partition(warn, max);
|
---|
1509 | }
|
---|
1510 |
|
---|
1511 | static int
|
---|
1512 | get_nonexisting_partition(int warn, int max)
|
---|
1513 | {
|
---|
1514 | int pno = -1;
|
---|
1515 | int i;
|
---|
1516 |
|
---|
1517 | for (i = 0; i < max; i++) {
|
---|
1518 | struct pte *pe = &ptes[i];
|
---|
1519 | struct partition *p = pe->part_table;
|
---|
1520 |
|
---|
1521 | if (p && is_cleared_partition(p)) {
|
---|
1522 | if (pno >= 0)
|
---|
1523 | goto not_unique;
|
---|
1524 | pno = i;
|
---|
1525 | }
|
---|
1526 | }
|
---|
1527 | if (pno >= 0) {
|
---|
1528 | printf("Selected partition %d\n", pno+1);
|
---|
1529 | return pno;
|
---|
1530 | }
|
---|
1531 | printf("All primary partitions have been defined already!\n");
|
---|
1532 | return -1;
|
---|
1533 |
|
---|
1534 | not_unique:
|
---|
1535 | return get_partition(warn, max);
|
---|
1536 | }
|
---|
1537 |
|
---|
1538 |
|
---|
1539 | static void
|
---|
1540 | change_units(void)
|
---|
1541 | {
|
---|
1542 | display_in_cyl_units = !display_in_cyl_units;
|
---|
1543 | update_units();
|
---|
1544 | printf("Changing display/entry units to %s\n",
|
---|
1545 | str_units(PLURAL));
|
---|
1546 | }
|
---|
1547 |
|
---|
1548 | static void
|
---|
1549 | toggle_active(int i)
|
---|
1550 | {
|
---|
1551 | struct pte *pe = &ptes[i];
|
---|
1552 | struct partition *p = pe->part_table;
|
---|
1553 |
|
---|
1554 | if (IS_EXTENDED(p->sys_ind) && !p->boot_ind)
|
---|
1555 | printf("WARNING: Partition %d is an extended partition\n", i + 1);
|
---|
1556 | p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG);
|
---|
1557 | pe->changed = 1;
|
---|
1558 | }
|
---|
1559 |
|
---|
1560 | static void
|
---|
1561 | toggle_dos_compatibility_flag(void)
|
---|
1562 | {
|
---|
1563 | dos_compatible_flag = ~dos_compatible_flag;
|
---|
1564 | if (dos_compatible_flag) {
|
---|
1565 | sector_offset = sectors;
|
---|
1566 | printf("DOS Compatibility flag is set\n");
|
---|
1567 | } else {
|
---|
1568 | sector_offset = 1;
|
---|
1569 | printf("DOS Compatibility flag is not set\n");
|
---|
1570 | }
|
---|
1571 | }
|
---|
1572 |
|
---|
1573 | static void
|
---|
1574 | delete_partition(int i)
|
---|
1575 | {
|
---|
1576 | struct pte *pe = &ptes[i];
|
---|
1577 | struct partition *p = pe->part_table;
|
---|
1578 | struct partition *q = pe->ext_pointer;
|
---|
1579 |
|
---|
1580 | /* Note that for the fifth partition (i == 4) we don't actually
|
---|
1581 | * decrement partitions.
|
---|
1582 | */
|
---|
1583 |
|
---|
1584 | if (warn_geometry())
|
---|
1585 | return; /* C/H/S not set */
|
---|
1586 | pe->changed = 1;
|
---|
1587 |
|
---|
1588 | if (LABEL_IS_SUN) {
|
---|
1589 | sun_delete_partition(i);
|
---|
1590 | return;
|
---|
1591 | }
|
---|
1592 | if (LABEL_IS_SGI) {
|
---|
1593 | sgi_delete_partition(i);
|
---|
1594 | return;
|
---|
1595 | }
|
---|
1596 |
|
---|
1597 | if (i < 4) {
|
---|
1598 | if (IS_EXTENDED(p->sys_ind) && i == ext_index) {
|
---|
1599 | partitions = 4;
|
---|
1600 | ptes[ext_index].ext_pointer = NULL;
|
---|
1601 | extended_offset = 0;
|
---|
1602 | }
|
---|
1603 | clear_partition(p);
|
---|
1604 | return;
|
---|
1605 | }
|
---|
1606 |
|
---|
1607 | if (!q->sys_ind && i > 4) {
|
---|
1608 | /* the last one in the chain - just delete */
|
---|
1609 | --partitions;
|
---|
1610 | --i;
|
---|
1611 | clear_partition(ptes[i].ext_pointer);
|
---|
1612 | ptes[i].changed = 1;
|
---|
1613 | } else {
|
---|
1614 | /* not the last one - further ones will be moved down */
|
---|
1615 | if (i > 4) {
|
---|
1616 | /* delete this link in the chain */
|
---|
1617 | p = ptes[i-1].ext_pointer;
|
---|
1618 | *p = *q;
|
---|
1619 | set_start_sect(p, get_start_sect(q));
|
---|
1620 | set_nr_sects(p, get_nr_sects(q));
|
---|
1621 | ptes[i-1].changed = 1;
|
---|
1622 | } else if (partitions > 5) { /* 5 will be moved to 4 */
|
---|
1623 | /* the first logical in a longer chain */
|
---|
1624 | pe = &ptes[5];
|
---|
1625 |
|
---|
1626 | if (pe->part_table) /* prevent SEGFAULT */
|
---|
1627 | set_start_sect(pe->part_table,
|
---|
1628 | get_partition_start(pe) -
|
---|
1629 | extended_offset);
|
---|
1630 | pe->offset = extended_offset;
|
---|
1631 | pe->changed = 1;
|
---|
1632 | }
|
---|
1633 |
|
---|
1634 | if (partitions > 5) {
|
---|
1635 | partitions--;
|
---|
1636 | while (i < partitions) {
|
---|
1637 | ptes[i] = ptes[i+1];
|
---|
1638 | i++;
|
---|
1639 | }
|
---|
1640 | } else
|
---|
1641 | /* the only logical: clear only */
|
---|
1642 | clear_partition(ptes[i].part_table);
|
---|
1643 | }
|
---|
1644 | }
|
---|
1645 |
|
---|
1646 | static void
|
---|
1647 | change_sysid(void)
|
---|
1648 | {
|
---|
1649 | int i, sys, origsys;
|
---|
1650 | struct partition *p;
|
---|
1651 |
|
---|
1652 | /* If sgi_label then don't use get_existing_partition,
|
---|
1653 | let the user select a partition, since get_existing_partition()
|
---|
1654 | only works for Linux like partition tables. */
|
---|
1655 | if (!LABEL_IS_SGI) {
|
---|
1656 | i = get_existing_partition(0, partitions);
|
---|
1657 | } else {
|
---|
1658 | i = get_partition(0, partitions);
|
---|
1659 | }
|
---|
1660 | if (i == -1)
|
---|
1661 | return;
|
---|
1662 | p = ptes[i].part_table;
|
---|
1663 | origsys = sys = get_sysid(i);
|
---|
1664 |
|
---|
1665 | /* if changing types T to 0 is allowed, then
|
---|
1666 | the reverse change must be allowed, too */
|
---|
1667 | if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN && !get_nr_sects(p)) {
|
---|
1668 | printf("Partition %d does not exist yet!\n", i + 1);
|
---|
1669 | return;
|
---|
1670 | }
|
---|
1671 | while (1) {
|
---|
1672 | sys = read_hex(get_sys_types());
|
---|
1673 |
|
---|
1674 | if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN) {
|
---|
1675 | printf("Type 0 means free space to many systems\n"
|
---|
1676 | "(but not to Linux). Having partitions of\n"
|
---|
1677 | "type 0 is probably unwise.\n");
|
---|
1678 | /* break; */
|
---|
1679 | }
|
---|
1680 |
|
---|
1681 | if (!LABEL_IS_SUN && !LABEL_IS_SGI) {
|
---|
1682 | if (IS_EXTENDED(sys) != IS_EXTENDED(p->sys_ind)) {
|
---|
1683 | printf("You cannot change a partition into"
|
---|
1684 | " an extended one or vice versa\n");
|
---|
1685 | break;
|
---|
1686 | }
|
---|
1687 | }
|
---|
1688 |
|
---|
1689 | if (sys < 256) {
|
---|
1690 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
1691 | if (LABEL_IS_SUN && i == 2 && sys != SUN_WHOLE_DISK)
|
---|
1692 | printf("Consider leaving partition 3 "
|
---|
1693 | "as Whole disk (5),\n"
|
---|
1694 | "as SunOS/Solaris expects it and "
|
---|
1695 | "even Linux likes it\n\n");
|
---|
1696 | #endif
|
---|
1697 | #if ENABLE_FEATURE_SGI_LABEL
|
---|
1698 | if (LABEL_IS_SGI &&
|
---|
1699 | (
|
---|
1700 | (i == 10 && sys != SGI_ENTIRE_DISK) ||
|
---|
1701 | (i == 8 && sys != 0)
|
---|
1702 | )
|
---|
1703 | ) {
|
---|
1704 | printf("Consider leaving partition 9 "
|
---|
1705 | "as volume header (0),\nand "
|
---|
1706 | "partition 11 as entire volume (6)"
|
---|
1707 | "as IRIX expects it\n\n");
|
---|
1708 | }
|
---|
1709 | #endif
|
---|
1710 | if (sys == origsys)
|
---|
1711 | break;
|
---|
1712 | if (LABEL_IS_SUN) {
|
---|
1713 | sun_change_sysid(i, sys);
|
---|
1714 | } else if (LABEL_IS_SGI) {
|
---|
1715 | sgi_change_sysid(i, sys);
|
---|
1716 | } else
|
---|
1717 | p->sys_ind = sys;
|
---|
1718 |
|
---|
1719 | printf("Changed system type of partition %d "
|
---|
1720 | "to %x (%s)\n", i + 1, sys,
|
---|
1721 | partition_type(sys));
|
---|
1722 | ptes[i].changed = 1;
|
---|
1723 | if (is_dos_partition(origsys) ||
|
---|
1724 | is_dos_partition(sys))
|
---|
1725 | dos_changed = 1;
|
---|
1726 | break;
|
---|
1727 | }
|
---|
1728 | }
|
---|
1729 | }
|
---|
1730 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
1731 |
|
---|
1732 |
|
---|
1733 | /* check_consistency() and linear2chs() added Sat Mar 6 12:28:16 1993,
|
---|
1734 | * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross,
|
---|
1735 | * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S.
|
---|
1736 | * Lubkin Oct. 1991). */
|
---|
1737 |
|
---|
1738 | static void
|
---|
1739 | linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *s)
|
---|
1740 | {
|
---|
1741 | int spc = heads * sectors;
|
---|
1742 |
|
---|
1743 | *c = ls / spc;
|
---|
1744 | ls = ls % spc;
|
---|
1745 | *h = ls / sectors;
|
---|
1746 | *s = ls % sectors + 1; /* sectors count from 1 */
|
---|
1747 | }
|
---|
1748 |
|
---|
1749 | static void
|
---|
1750 | check_consistency(const struct partition *p, int partition)
|
---|
1751 | {
|
---|
1752 | unsigned pbc, pbh, pbs; /* physical beginning c, h, s */
|
---|
1753 | unsigned pec, peh, pes; /* physical ending c, h, s */
|
---|
1754 | unsigned lbc, lbh, lbs; /* logical beginning c, h, s */
|
---|
1755 | unsigned lec, leh, les; /* logical ending c, h, s */
|
---|
1756 |
|
---|
1757 | if (!heads || !sectors || (partition >= 4))
|
---|
1758 | return; /* do not check extended partitions */
|
---|
1759 |
|
---|
1760 | /* physical beginning c, h, s */
|
---|
1761 | pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300);
|
---|
1762 | pbh = p->head;
|
---|
1763 | pbs = p->sector & 0x3f;
|
---|
1764 |
|
---|
1765 | /* physical ending c, h, s */
|
---|
1766 | pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300);
|
---|
1767 | peh = p->end_head;
|
---|
1768 | pes = p->end_sector & 0x3f;
|
---|
1769 |
|
---|
1770 | /* compute logical beginning (c, h, s) */
|
---|
1771 | linear2chs(get_start_sect(p), &lbc, &lbh, &lbs);
|
---|
1772 |
|
---|
1773 | /* compute logical ending (c, h, s) */
|
---|
1774 | linear2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les);
|
---|
1775 |
|
---|
1776 | /* Same physical / logical beginning? */
|
---|
1777 | if (cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
|
---|
1778 | printf("Partition %d has different physical/logical "
|
---|
1779 | "beginnings (non-Linux?):\n", partition + 1);
|
---|
1780 | printf(" phys=(%d, %d, %d) ", pbc, pbh, pbs);
|
---|
1781 | printf("logical=(%d, %d, %d)\n",lbc, lbh, lbs);
|
---|
1782 | }
|
---|
1783 |
|
---|
1784 | /* Same physical / logical ending? */
|
---|
1785 | if (cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
|
---|
1786 | printf("Partition %d has different physical/logical "
|
---|
1787 | "endings:\n", partition + 1);
|
---|
1788 | printf(" phys=(%d, %d, %d) ", pec, peh, pes);
|
---|
1789 | printf("logical=(%d, %d, %d)\n", lec, leh, les);
|
---|
1790 | }
|
---|
1791 |
|
---|
1792 | /* Ending on cylinder boundary? */
|
---|
1793 | if (peh != (heads - 1) || pes != sectors) {
|
---|
1794 | printf("Partition %i does not end on cylinder boundary\n",
|
---|
1795 | partition + 1);
|
---|
1796 | }
|
---|
1797 | }
|
---|
1798 |
|
---|
1799 | static void
|
---|
1800 | list_disk_geometry(void)
|
---|
1801 | {
|
---|
1802 | long long bytes = (total_number_of_sectors << 9);
|
---|
1803 | long megabytes = bytes/1000000;
|
---|
1804 |
|
---|
1805 | if (megabytes < 10000)
|
---|
1806 | printf("\nDisk %s: %ld MB, %lld bytes\n",
|
---|
1807 | disk_device, megabytes, bytes);
|
---|
1808 | else
|
---|
1809 | printf("\nDisk %s: %ld.%ld GB, %lld bytes\n",
|
---|
1810 | disk_device, megabytes/1000, (megabytes/100)%10, bytes);
|
---|
1811 | printf("%d heads, %d sectors/track, %d cylinders",
|
---|
1812 | heads, sectors, cylinders);
|
---|
1813 | if (units_per_sector == 1)
|
---|
1814 | printf(", total %llu sectors",
|
---|
1815 | total_number_of_sectors / (sector_size/512));
|
---|
1816 | printf("\nUnits = %s of %d * %d = %d bytes\n\n",
|
---|
1817 | str_units(PLURAL),
|
---|
1818 | units_per_sector, sector_size, units_per_sector * sector_size);
|
---|
1819 | }
|
---|
1820 |
|
---|
1821 | /*
|
---|
1822 | * Check whether partition entries are ordered by their starting positions.
|
---|
1823 | * Return 0 if OK. Return i if partition i should have been earlier.
|
---|
1824 | * Two separate checks: primary and logical partitions.
|
---|
1825 | */
|
---|
1826 | static int
|
---|
1827 | wrong_p_order(int *prev)
|
---|
1828 | {
|
---|
1829 | const struct pte *pe;
|
---|
1830 | const struct partition *p;
|
---|
1831 | ullong last_p_start_pos = 0, p_start_pos;
|
---|
1832 | int i, last_i = 0;
|
---|
1833 |
|
---|
1834 | for (i = 0; i < partitions; i++) {
|
---|
1835 | if (i == 4) {
|
---|
1836 | last_i = 4;
|
---|
1837 | last_p_start_pos = 0;
|
---|
1838 | }
|
---|
1839 | pe = &ptes[i];
|
---|
1840 | if ((p = pe->part_table)->sys_ind) {
|
---|
1841 | p_start_pos = get_partition_start(pe);
|
---|
1842 |
|
---|
1843 | if (last_p_start_pos > p_start_pos) {
|
---|
1844 | if (prev)
|
---|
1845 | *prev = last_i;
|
---|
1846 | return i;
|
---|
1847 | }
|
---|
1848 |
|
---|
1849 | last_p_start_pos = p_start_pos;
|
---|
1850 | last_i = i;
|
---|
1851 | }
|
---|
1852 | }
|
---|
1853 | return 0;
|
---|
1854 | }
|
---|
1855 |
|
---|
1856 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
1857 | /*
|
---|
1858 | * Fix the chain of logicals.
|
---|
1859 | * extended_offset is unchanged, the set of sectors used is unchanged
|
---|
1860 | * The chain is sorted so that sectors increase, and so that
|
---|
1861 | * starting sectors increase.
|
---|
1862 | *
|
---|
1863 | * After this it may still be that cfdisk doesnt like the table.
|
---|
1864 | * (This is because cfdisk considers expanded parts, from link to
|
---|
1865 | * end of partition, and these may still overlap.)
|
---|
1866 | * Now
|
---|
1867 | * sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda
|
---|
1868 | * may help.
|
---|
1869 | */
|
---|
1870 | static void
|
---|
1871 | fix_chain_of_logicals(void)
|
---|
1872 | {
|
---|
1873 | int j, oj, ojj, sj, sjj;
|
---|
1874 | struct partition *pj,*pjj,tmp;
|
---|
1875 |
|
---|
1876 | /* Stage 1: sort sectors but leave sector of part 4 */
|
---|
1877 | /* (Its sector is the global extended_offset.) */
|
---|
1878 | stage1:
|
---|
1879 | for (j = 5; j < partitions-1; j++) {
|
---|
1880 | oj = ptes[j].offset;
|
---|
1881 | ojj = ptes[j+1].offset;
|
---|
1882 | if (oj > ojj) {
|
---|
1883 | ptes[j].offset = ojj;
|
---|
1884 | ptes[j+1].offset = oj;
|
---|
1885 | pj = ptes[j].part_table;
|
---|
1886 | set_start_sect(pj, get_start_sect(pj)+oj-ojj);
|
---|
1887 | pjj = ptes[j+1].part_table;
|
---|
1888 | set_start_sect(pjj, get_start_sect(pjj)+ojj-oj);
|
---|
1889 | set_start_sect(ptes[j-1].ext_pointer,
|
---|
1890 | ojj-extended_offset);
|
---|
1891 | set_start_sect(ptes[j].ext_pointer,
|
---|
1892 | oj-extended_offset);
|
---|
1893 | goto stage1;
|
---|
1894 | }
|
---|
1895 | }
|
---|
1896 |
|
---|
1897 | /* Stage 2: sort starting sectors */
|
---|
1898 | stage2:
|
---|
1899 | for (j = 4; j < partitions-1; j++) {
|
---|
1900 | pj = ptes[j].part_table;
|
---|
1901 | pjj = ptes[j+1].part_table;
|
---|
1902 | sj = get_start_sect(pj);
|
---|
1903 | sjj = get_start_sect(pjj);
|
---|
1904 | oj = ptes[j].offset;
|
---|
1905 | ojj = ptes[j+1].offset;
|
---|
1906 | if (oj+sj > ojj+sjj) {
|
---|
1907 | tmp = *pj;
|
---|
1908 | *pj = *pjj;
|
---|
1909 | *pjj = tmp;
|
---|
1910 | set_start_sect(pj, ojj+sjj-oj);
|
---|
1911 | set_start_sect(pjj, oj+sj-ojj);
|
---|
1912 | goto stage2;
|
---|
1913 | }
|
---|
1914 | }
|
---|
1915 |
|
---|
1916 | /* Probably something was changed */
|
---|
1917 | for (j = 4; j < partitions; j++)
|
---|
1918 | ptes[j].changed = 1;
|
---|
1919 | }
|
---|
1920 |
|
---|
1921 |
|
---|
1922 | static void
|
---|
1923 | fix_partition_table_order(void)
|
---|
1924 | {
|
---|
1925 | struct pte *pei, *pek;
|
---|
1926 | int i,k;
|
---|
1927 |
|
---|
1928 | if (!wrong_p_order(NULL)) {
|
---|
1929 | printf("Ordering is already correct\n\n");
|
---|
1930 | return;
|
---|
1931 | }
|
---|
1932 |
|
---|
1933 | while ((i = wrong_p_order(&k)) != 0 && i < 4) {
|
---|
1934 | /* partition i should have come earlier, move it */
|
---|
1935 | /* We have to move data in the MBR */
|
---|
1936 | struct partition *pi, *pk, *pe, pbuf;
|
---|
1937 | pei = &ptes[i];
|
---|
1938 | pek = &ptes[k];
|
---|
1939 |
|
---|
1940 | pe = pei->ext_pointer;
|
---|
1941 | pei->ext_pointer = pek->ext_pointer;
|
---|
1942 | pek->ext_pointer = pe;
|
---|
1943 |
|
---|
1944 | pi = pei->part_table;
|
---|
1945 | pk = pek->part_table;
|
---|
1946 |
|
---|
1947 | memmove(&pbuf, pi, sizeof(struct partition));
|
---|
1948 | memmove(pi, pk, sizeof(struct partition));
|
---|
1949 | memmove(pk, &pbuf, sizeof(struct partition));
|
---|
1950 |
|
---|
1951 | pei->changed = pek->changed = 1;
|
---|
1952 | }
|
---|
1953 |
|
---|
1954 | if (i)
|
---|
1955 | fix_chain_of_logicals();
|
---|
1956 |
|
---|
1957 | printf("Done.\n");
|
---|
1958 |
|
---|
1959 | }
|
---|
1960 | #endif
|
---|
1961 |
|
---|
1962 | static void
|
---|
1963 | list_table(int xtra)
|
---|
1964 | {
|
---|
1965 | const struct partition *p;
|
---|
1966 | int i, w;
|
---|
1967 |
|
---|
1968 | if (LABEL_IS_SUN) {
|
---|
1969 | sun_list_table(xtra);
|
---|
1970 | return;
|
---|
1971 | }
|
---|
1972 | if (LABEL_IS_SUN) {
|
---|
1973 | sgi_list_table(xtra);
|
---|
1974 | return;
|
---|
1975 | }
|
---|
1976 |
|
---|
1977 | list_disk_geometry();
|
---|
1978 |
|
---|
1979 | if (LABEL_IS_OSF) {
|
---|
1980 | xbsd_print_disklabel(xtra);
|
---|
1981 | return;
|
---|
1982 | }
|
---|
1983 |
|
---|
1984 | /* Heuristic: we list partition 3 of /dev/foo as /dev/foo3,
|
---|
1985 | but if the device name ends in a digit, say /dev/foo1,
|
---|
1986 | then the partition is called /dev/foo1p3. */
|
---|
1987 | w = strlen(disk_device);
|
---|
1988 | if (w && isdigit(disk_device[w-1]))
|
---|
1989 | w++;
|
---|
1990 | if (w < 5)
|
---|
1991 | w = 5;
|
---|
1992 |
|
---|
1993 | // 1 12345678901 12345678901 12345678901 12
|
---|
1994 | printf("%*s Boot Start End Blocks Id System\n",
|
---|
1995 | w+1, "Device");
|
---|
1996 |
|
---|
1997 | for (i = 0; i < partitions; i++) {
|
---|
1998 | const struct pte *pe = &ptes[i];
|
---|
1999 | ullong psects;
|
---|
2000 | ullong pblocks;
|
---|
2001 | unsigned podd;
|
---|
2002 |
|
---|
2003 | p = pe->part_table;
|
---|
2004 | if (!p || is_cleared_partition(p))
|
---|
2005 | continue;
|
---|
2006 |
|
---|
2007 | psects = get_nr_sects(p);
|
---|
2008 | pblocks = psects;
|
---|
2009 | podd = 0;
|
---|
2010 |
|
---|
2011 | if (sector_size < 1024) {
|
---|
2012 | pblocks /= (1024 / sector_size);
|
---|
2013 | podd = psects % (1024 / sector_size);
|
---|
2014 | }
|
---|
2015 | if (sector_size > 1024)
|
---|
2016 | pblocks *= (sector_size / 1024);
|
---|
2017 |
|
---|
2018 | printf("%s %c %11llu %11llu %11llu%c %2x %s\n",
|
---|
2019 | partname(disk_device, i+1, w+2),
|
---|
2020 | !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */
|
---|
2021 | ? '*' : '?',
|
---|
2022 | (ullong) cround(get_partition_start(pe)), /* start */
|
---|
2023 | (ullong) cround(get_partition_start(pe) + psects /* end */
|
---|
2024 | - (psects ? 1 : 0)),
|
---|
2025 | (ullong) pblocks, podd ? '+' : ' ', /* odd flag on end */
|
---|
2026 | p->sys_ind, /* type id */
|
---|
2027 | partition_type(p->sys_ind)); /* type name */
|
---|
2028 |
|
---|
2029 | check_consistency(p, i);
|
---|
2030 | }
|
---|
2031 |
|
---|
2032 | /* Is partition table in disk order? It need not be, but... */
|
---|
2033 | /* partition table entries are not checked for correct order if this
|
---|
2034 | is a sgi, sun or aix labeled disk... */
|
---|
2035 | if (LABEL_IS_DOS && wrong_p_order(NULL)) {
|
---|
2036 | /* FIXME */
|
---|
2037 | printf("\nPartition table entries are not in disk order\n");
|
---|
2038 | }
|
---|
2039 | }
|
---|
2040 |
|
---|
2041 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
2042 | static void
|
---|
2043 | x_list_table(int extend)
|
---|
2044 | {
|
---|
2045 | const struct pte *pe;
|
---|
2046 | const struct partition *p;
|
---|
2047 | int i;
|
---|
2048 |
|
---|
2049 | printf("\nDisk %s: %d heads, %d sectors, %d cylinders\n\n",
|
---|
2050 | disk_device, heads, sectors, cylinders);
|
---|
2051 | printf("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n");
|
---|
2052 | for (i = 0; i < partitions; i++) {
|
---|
2053 | pe = &ptes[i];
|
---|
2054 | p = (extend ? pe->ext_pointer : pe->part_table);
|
---|
2055 | if (p != NULL) {
|
---|
2056 | printf("%2d %02x%4d%4d%5d%4d%4d%5d%11u%11u %02x\n",
|
---|
2057 | i + 1, p->boot_ind, p->head,
|
---|
2058 | sector(p->sector),
|
---|
2059 | cylinder(p->sector, p->cyl), p->end_head,
|
---|
2060 | sector(p->end_sector),
|
---|
2061 | cylinder(p->end_sector, p->end_cyl),
|
---|
2062 | get_start_sect(p), get_nr_sects(p), p->sys_ind);
|
---|
2063 | if (p->sys_ind)
|
---|
2064 | check_consistency(p, i);
|
---|
2065 | }
|
---|
2066 | }
|
---|
2067 | }
|
---|
2068 | #endif
|
---|
2069 |
|
---|
2070 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
2071 | static void
|
---|
2072 | fill_bounds(ullong *first, ullong *last)
|
---|
2073 | {
|
---|
2074 | int i;
|
---|
2075 | const struct pte *pe = &ptes[0];
|
---|
2076 | const struct partition *p;
|
---|
2077 |
|
---|
2078 | for (i = 0; i < partitions; pe++,i++) {
|
---|
2079 | p = pe->part_table;
|
---|
2080 | if (!p->sys_ind || IS_EXTENDED(p->sys_ind)) {
|
---|
2081 | first[i] = 0xffffffff;
|
---|
2082 | last[i] = 0;
|
---|
2083 | } else {
|
---|
2084 | first[i] = get_partition_start(pe);
|
---|
2085 | last[i] = first[i] + get_nr_sects(p) - 1;
|
---|
2086 | }
|
---|
2087 | }
|
---|
2088 | }
|
---|
2089 |
|
---|
2090 | static void
|
---|
2091 | check(int n, unsigned h, unsigned s, unsigned c, ullong start)
|
---|
2092 | {
|
---|
2093 | ullong total, real_s, real_c;
|
---|
2094 |
|
---|
2095 | real_s = sector(s) - 1;
|
---|
2096 | real_c = cylinder(s, c);
|
---|
2097 | total = (real_c * sectors + real_s) * heads + h;
|
---|
2098 | if (!total)
|
---|
2099 | printf("Partition %d contains sector 0\n", n);
|
---|
2100 | if (h >= heads)
|
---|
2101 | printf("Partition %d: head %d greater than maximum %d\n",
|
---|
2102 | n, h + 1, heads);
|
---|
2103 | if (real_s >= sectors)
|
---|
2104 | printf("Partition %d: sector %d greater than "
|
---|
2105 | "maximum %d\n", n, s, sectors);
|
---|
2106 | if (real_c >= cylinders)
|
---|
2107 | printf("Partition %d: cylinder %llu greater than "
|
---|
2108 | "maximum %d\n", n, real_c + 1, cylinders);
|
---|
2109 | if (cylinders <= 1024 && start != total)
|
---|
2110 | printf("Partition %d: previous sectors %llu disagrees with "
|
---|
2111 | "total %llu\n", n, start, total);
|
---|
2112 | }
|
---|
2113 |
|
---|
2114 | static void
|
---|
2115 | verify(void)
|
---|
2116 | {
|
---|
2117 | int i, j;
|
---|
2118 | unsigned total = 1;
|
---|
2119 | ullong first[partitions], last[partitions];
|
---|
2120 | struct partition *p;
|
---|
2121 |
|
---|
2122 | if (warn_geometry())
|
---|
2123 | return;
|
---|
2124 |
|
---|
2125 | if (LABEL_IS_SUN) {
|
---|
2126 | verify_sun();
|
---|
2127 | return;
|
---|
2128 | }
|
---|
2129 | if (LABEL_IS_SGI) {
|
---|
2130 | verify_sgi(1);
|
---|
2131 | return;
|
---|
2132 | }
|
---|
2133 |
|
---|
2134 | fill_bounds(first, last);
|
---|
2135 | for (i = 0; i < partitions; i++) {
|
---|
2136 | struct pte *pe = &ptes[i];
|
---|
2137 |
|
---|
2138 | p = pe->part_table;
|
---|
2139 | if (p->sys_ind && !IS_EXTENDED(p->sys_ind)) {
|
---|
2140 | check_consistency(p, i);
|
---|
2141 | if (get_partition_start(pe) < first[i])
|
---|
2142 | printf("Warning: bad start-of-data in "
|
---|
2143 | "partition %d\n", i + 1);
|
---|
2144 | check(i + 1, p->end_head, p->end_sector, p->end_cyl,
|
---|
2145 | last[i]);
|
---|
2146 | total += last[i] + 1 - first[i];
|
---|
2147 | for (j = 0; j < i; j++) {
|
---|
2148 | if ((first[i] >= first[j] && first[i] <= last[j])
|
---|
2149 | || ((last[i] <= last[j] && last[i] >= first[j]))) {
|
---|
2150 | printf("Warning: partition %d overlaps "
|
---|
2151 | "partition %d\n", j + 1, i + 1);
|
---|
2152 | total += first[i] >= first[j] ?
|
---|
2153 | first[i] : first[j];
|
---|
2154 | total -= last[i] <= last[j] ?
|
---|
2155 | last[i] : last[j];
|
---|
2156 | }
|
---|
2157 | }
|
---|
2158 | }
|
---|
2159 | }
|
---|
2160 |
|
---|
2161 | if (extended_offset) {
|
---|
2162 | struct pte *pex = &ptes[ext_index];
|
---|
2163 | ullong e_last = get_start_sect(pex->part_table) +
|
---|
2164 | get_nr_sects(pex->part_table) - 1;
|
---|
2165 |
|
---|
2166 | for (i = 4; i < partitions; i++) {
|
---|
2167 | total++;
|
---|
2168 | p = ptes[i].part_table;
|
---|
2169 | if (!p->sys_ind) {
|
---|
2170 | if (i != 4 || i + 1 < partitions)
|
---|
2171 | printf("Warning: partition %d "
|
---|
2172 | "is empty\n", i + 1);
|
---|
2173 | } else if (first[i] < extended_offset || last[i] > e_last) {
|
---|
2174 | printf("Logical partition %d not entirely in "
|
---|
2175 | "partition %d\n", i + 1, ext_index + 1);
|
---|
2176 | }
|
---|
2177 | }
|
---|
2178 | }
|
---|
2179 |
|
---|
2180 | if (total > heads * sectors * cylinders)
|
---|
2181 | printf("Total allocated sectors %d greater than the maximum "
|
---|
2182 | "%d\n", total, heads * sectors * cylinders);
|
---|
2183 | else {
|
---|
2184 | total = heads * sectors * cylinders - total;
|
---|
2185 | if (total != 0)
|
---|
2186 | printf("%d unallocated sectors\n", total);
|
---|
2187 | }
|
---|
2188 | }
|
---|
2189 |
|
---|
2190 | static void
|
---|
2191 | add_partition(int n, int sys)
|
---|
2192 | {
|
---|
2193 | char mesg[256]; /* 48 does not suffice in Japanese */
|
---|
2194 | int i, num_read = 0;
|
---|
2195 | struct partition *p = ptes[n].part_table;
|
---|
2196 | struct partition *q = ptes[ext_index].part_table;
|
---|
2197 | ullong limit, temp;
|
---|
2198 | ullong start, stop = 0;
|
---|
2199 | ullong first[partitions], last[partitions];
|
---|
2200 |
|
---|
2201 | if (p && p->sys_ind) {
|
---|
2202 | printf(msg_part_already_defined, n + 1);
|
---|
2203 | return;
|
---|
2204 | }
|
---|
2205 | fill_bounds(first, last);
|
---|
2206 | if (n < 4) {
|
---|
2207 | start = sector_offset;
|
---|
2208 | if (display_in_cyl_units || !total_number_of_sectors)
|
---|
2209 | limit = (ullong) heads * sectors * cylinders - 1;
|
---|
2210 | else
|
---|
2211 | limit = total_number_of_sectors - 1;
|
---|
2212 | if (extended_offset) {
|
---|
2213 | first[ext_index] = extended_offset;
|
---|
2214 | last[ext_index] = get_start_sect(q) +
|
---|
2215 | get_nr_sects(q) - 1;
|
---|
2216 | }
|
---|
2217 | } else {
|
---|
2218 | start = extended_offset + sector_offset;
|
---|
2219 | limit = get_start_sect(q) + get_nr_sects(q) - 1;
|
---|
2220 | }
|
---|
2221 | if (display_in_cyl_units)
|
---|
2222 | for (i = 0; i < partitions; i++)
|
---|
2223 | first[i] = (cround(first[i]) - 1) * units_per_sector;
|
---|
2224 |
|
---|
2225 | snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR));
|
---|
2226 | do {
|
---|
2227 | temp = start;
|
---|
2228 | for (i = 0; i < partitions; i++) {
|
---|
2229 | int lastplusoff;
|
---|
2230 |
|
---|
2231 | if (start == ptes[i].offset)
|
---|
2232 | start += sector_offset;
|
---|
2233 | lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset);
|
---|
2234 | if (start >= first[i] && start <= lastplusoff)
|
---|
2235 | start = lastplusoff + 1;
|
---|
2236 | }
|
---|
2237 | if (start > limit)
|
---|
2238 | break;
|
---|
2239 | if (start >= temp+units_per_sector && num_read) {
|
---|
2240 | printf("Sector %lld is already allocated\n", temp);
|
---|
2241 | temp = start;
|
---|
2242 | num_read = 0;
|
---|
2243 | }
|
---|
2244 | if (!num_read && start == temp) {
|
---|
2245 | ullong saved_start;
|
---|
2246 |
|
---|
2247 | saved_start = start;
|
---|
2248 | start = read_int(cround(saved_start), cround(saved_start), cround(limit),
|
---|
2249 | 0, mesg);
|
---|
2250 | if (display_in_cyl_units) {
|
---|
2251 | start = (start - 1) * units_per_sector;
|
---|
2252 | if (start < saved_start) start = saved_start;
|
---|
2253 | }
|
---|
2254 | num_read = 1;
|
---|
2255 | }
|
---|
2256 | } while (start != temp || !num_read);
|
---|
2257 | if (n > 4) { /* NOT for fifth partition */
|
---|
2258 | struct pte *pe = &ptes[n];
|
---|
2259 |
|
---|
2260 | pe->offset = start - sector_offset;
|
---|
2261 | if (pe->offset == extended_offset) { /* must be corrected */
|
---|
2262 | pe->offset++;
|
---|
2263 | if (sector_offset == 1)
|
---|
2264 | start++;
|
---|
2265 | }
|
---|
2266 | }
|
---|
2267 |
|
---|
2268 | for (i = 0; i < partitions; i++) {
|
---|
2269 | struct pte *pe = &ptes[i];
|
---|
2270 |
|
---|
2271 | if (start < pe->offset && limit >= pe->offset)
|
---|
2272 | limit = pe->offset - 1;
|
---|
2273 | if (start < first[i] && limit >= first[i])
|
---|
2274 | limit = first[i] - 1;
|
---|
2275 | }
|
---|
2276 | if (start > limit) {
|
---|
2277 | printf("No free sectors available\n");
|
---|
2278 | if (n > 4)
|
---|
2279 | partitions--;
|
---|
2280 | return;
|
---|
2281 | }
|
---|
2282 | if (cround(start) == cround(limit)) {
|
---|
2283 | stop = limit;
|
---|
2284 | } else {
|
---|
2285 | snprintf(mesg, sizeof(mesg),
|
---|
2286 | "Last %s or +size or +sizeM or +sizeK",
|
---|
2287 | str_units(SINGULAR));
|
---|
2288 | stop = read_int(cround(start), cround(limit), cround(limit),
|
---|
2289 | cround(start), mesg);
|
---|
2290 | if (display_in_cyl_units) {
|
---|
2291 | stop = stop * units_per_sector - 1;
|
---|
2292 | if (stop >limit)
|
---|
2293 | stop = limit;
|
---|
2294 | }
|
---|
2295 | }
|
---|
2296 |
|
---|
2297 | set_partition(n, 0, start, stop, sys);
|
---|
2298 | if (n > 4)
|
---|
2299 | set_partition(n - 1, 1, ptes[n].offset, stop, EXTENDED);
|
---|
2300 |
|
---|
2301 | if (IS_EXTENDED(sys)) {
|
---|
2302 | struct pte *pe4 = &ptes[4];
|
---|
2303 | struct pte *pen = &ptes[n];
|
---|
2304 |
|
---|
2305 | ext_index = n;
|
---|
2306 | pen->ext_pointer = p;
|
---|
2307 | pe4->offset = extended_offset = start;
|
---|
2308 | pe4->sectorbuffer = xzalloc(sector_size);
|
---|
2309 | pe4->part_table = pt_offset(pe4->sectorbuffer, 0);
|
---|
2310 | pe4->ext_pointer = pe4->part_table + 1;
|
---|
2311 | pe4->changed = 1;
|
---|
2312 | partitions = 5;
|
---|
2313 | }
|
---|
2314 | }
|
---|
2315 |
|
---|
2316 | static void
|
---|
2317 | add_logical(void)
|
---|
2318 | {
|
---|
2319 | if (partitions > 5 || ptes[4].part_table->sys_ind) {
|
---|
2320 | struct pte *pe = &ptes[partitions];
|
---|
2321 |
|
---|
2322 | pe->sectorbuffer = xzalloc(sector_size);
|
---|
2323 | pe->part_table = pt_offset(pe->sectorbuffer, 0);
|
---|
2324 | pe->ext_pointer = pe->part_table + 1;
|
---|
2325 | pe->offset = 0;
|
---|
2326 | pe->changed = 1;
|
---|
2327 | partitions++;
|
---|
2328 | }
|
---|
2329 | add_partition(partitions - 1, LINUX_NATIVE);
|
---|
2330 | }
|
---|
2331 |
|
---|
2332 | static void
|
---|
2333 | new_partition(void)
|
---|
2334 | {
|
---|
2335 | int i, free_primary = 0;
|
---|
2336 |
|
---|
2337 | if (warn_geometry())
|
---|
2338 | return;
|
---|
2339 |
|
---|
2340 | if (LABEL_IS_SUN) {
|
---|
2341 | add_sun_partition(get_partition(0, partitions), LINUX_NATIVE);
|
---|
2342 | return;
|
---|
2343 | }
|
---|
2344 | if (LABEL_IS_SGI) {
|
---|
2345 | sgi_add_partition(get_partition(0, partitions), LINUX_NATIVE);
|
---|
2346 | return;
|
---|
2347 | }
|
---|
2348 | if (LABEL_IS_AIX) {
|
---|
2349 | printf("Sorry - this fdisk cannot handle AIX disk labels.\n"
|
---|
2350 | "If you want to add DOS-type partitions, create a new empty DOS partition\n"
|
---|
2351 | "table first (use 'o'). This will destroy the present disk contents.\n");
|
---|
2352 | return;
|
---|
2353 | }
|
---|
2354 |
|
---|
2355 | for (i = 0; i < 4; i++)
|
---|
2356 | free_primary += !ptes[i].part_table->sys_ind;
|
---|
2357 |
|
---|
2358 | if (!free_primary && partitions >= MAXIMUM_PARTS) {
|
---|
2359 | printf("The maximum number of partitions has been created\n");
|
---|
2360 | return;
|
---|
2361 | }
|
---|
2362 |
|
---|
2363 | if (!free_primary) {
|
---|
2364 | if (extended_offset)
|
---|
2365 | add_logical();
|
---|
2366 | else
|
---|
2367 | printf("You must delete some partition and add "
|
---|
2368 | "an extended partition first\n");
|
---|
2369 | } else {
|
---|
2370 | char c, line[80];
|
---|
2371 | snprintf(line, sizeof(line),
|
---|
2372 | "Command action\n"
|
---|
2373 | " %s\n"
|
---|
2374 | " p primary partition (1-4)\n",
|
---|
2375 | (extended_offset ?
|
---|
2376 | "l logical (5 or over)" : "e extended"));
|
---|
2377 | while (1) {
|
---|
2378 | c = read_nonempty(line);
|
---|
2379 | if (c == 'p' || c == 'P') {
|
---|
2380 | i = get_nonexisting_partition(0, 4);
|
---|
2381 | if (i >= 0)
|
---|
2382 | add_partition(i, LINUX_NATIVE);
|
---|
2383 | return;
|
---|
2384 | }
|
---|
2385 | if (c == 'l' && extended_offset) {
|
---|
2386 | add_logical();
|
---|
2387 | return;
|
---|
2388 | }
|
---|
2389 | if (c == 'e' && !extended_offset) {
|
---|
2390 | i = get_nonexisting_partition(0, 4);
|
---|
2391 | if (i >= 0)
|
---|
2392 | add_partition(i, EXTENDED);
|
---|
2393 | return;
|
---|
2394 | }
|
---|
2395 | printf("Invalid partition number "
|
---|
2396 | "for type '%c'\n", c);
|
---|
2397 | }
|
---|
2398 | }
|
---|
2399 | }
|
---|
2400 |
|
---|
2401 | static void
|
---|
2402 | write_table(void)
|
---|
2403 | {
|
---|
2404 | int i;
|
---|
2405 |
|
---|
2406 | if (LABEL_IS_DOS) {
|
---|
2407 | for (i = 0; i < 3; i++)
|
---|
2408 | if (ptes[i].changed)
|
---|
2409 | ptes[3].changed = 1;
|
---|
2410 | for (i = 3; i < partitions; i++) {
|
---|
2411 | struct pte *pe = &ptes[i];
|
---|
2412 |
|
---|
2413 | if (pe->changed) {
|
---|
2414 | write_part_table_flag(pe->sectorbuffer);
|
---|
2415 | write_sector(pe->offset, pe->sectorbuffer);
|
---|
2416 | }
|
---|
2417 | }
|
---|
2418 | }
|
---|
2419 | else if (LABEL_IS_SGI) {
|
---|
2420 | /* no test on change? the printf below might be mistaken */
|
---|
2421 | sgi_write_table();
|
---|
2422 | }
|
---|
2423 | else if (LABEL_IS_SUN) {
|
---|
2424 | int needw = 0;
|
---|
2425 |
|
---|
2426 | for (i = 0; i < 8; i++)
|
---|
2427 | if (ptes[i].changed)
|
---|
2428 | needw = 1;
|
---|
2429 | if (needw)
|
---|
2430 | sun_write_table();
|
---|
2431 | }
|
---|
2432 |
|
---|
2433 | printf("The partition table has been altered!\n\n");
|
---|
2434 | reread_partition_table(1);
|
---|
2435 | }
|
---|
2436 |
|
---|
2437 | static void
|
---|
2438 | reread_partition_table(int leave)
|
---|
2439 | {
|
---|
2440 | int i;
|
---|
2441 |
|
---|
2442 | printf("Calling ioctl() to re-read partition table\n");
|
---|
2443 | sync();
|
---|
2444 | /* sleep(2); Huh? */
|
---|
2445 | i = ioctl_or_perror(fd, BLKRRPART, NULL,
|
---|
2446 | "WARNING: rereading partition table "
|
---|
2447 | "failed, kernel still uses old table");
|
---|
2448 | #if 0
|
---|
2449 | if (dos_changed)
|
---|
2450 | printf(
|
---|
2451 | "\nWARNING: If you have created or modified any DOS 6.x\n"
|
---|
2452 | "partitions, please see the fdisk manual page for additional\n"
|
---|
2453 | "information\n");
|
---|
2454 | #endif
|
---|
2455 |
|
---|
2456 | if (leave) {
|
---|
2457 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
2458 | close(fd);
|
---|
2459 | exit(i != 0);
|
---|
2460 | }
|
---|
2461 | }
|
---|
2462 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
2463 |
|
---|
2464 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
2465 | #define MAX_PER_LINE 16
|
---|
2466 | static void
|
---|
2467 | print_buffer(char *pbuffer)
|
---|
2468 | {
|
---|
2469 | int i,l;
|
---|
2470 |
|
---|
2471 | for (i = 0, l = 0; i < sector_size; i++, l++) {
|
---|
2472 | if (l == 0)
|
---|
2473 | printf("0x%03X:", i);
|
---|
2474 | printf(" %02X", (unsigned char) pbuffer[i]);
|
---|
2475 | if (l == MAX_PER_LINE - 1) {
|
---|
2476 | puts("");
|
---|
2477 | l = -1;
|
---|
2478 | }
|
---|
2479 | }
|
---|
2480 | if (l > 0)
|
---|
2481 | puts("");
|
---|
2482 | puts("");
|
---|
2483 | }
|
---|
2484 |
|
---|
2485 | static void
|
---|
2486 | print_raw(void)
|
---|
2487 | {
|
---|
2488 | int i;
|
---|
2489 |
|
---|
2490 | printf("Device: %s\n", disk_device);
|
---|
2491 | if (LABEL_IS_SGI || LABEL_IS_SUN)
|
---|
2492 | print_buffer(MBRbuffer);
|
---|
2493 | else {
|
---|
2494 | for (i = 3; i < partitions; i++)
|
---|
2495 | print_buffer(ptes[i].sectorbuffer);
|
---|
2496 | }
|
---|
2497 | }
|
---|
2498 |
|
---|
2499 | static void
|
---|
2500 | move_begin(int i)
|
---|
2501 | {
|
---|
2502 | struct pte *pe = &ptes[i];
|
---|
2503 | struct partition *p = pe->part_table;
|
---|
2504 | ullong new, first;
|
---|
2505 |
|
---|
2506 | if (warn_geometry())
|
---|
2507 | return;
|
---|
2508 | if (!p->sys_ind || !get_nr_sects(p) || IS_EXTENDED(p->sys_ind)) {
|
---|
2509 | printf("Partition %d has no data area\n", i + 1);
|
---|
2510 | return;
|
---|
2511 | }
|
---|
2512 | first = get_partition_start(pe);
|
---|
2513 | new = read_int(first, first, first + get_nr_sects(p) - 1, first,
|
---|
2514 | "New beginning of data") - pe->offset;
|
---|
2515 |
|
---|
2516 | if (new != get_nr_sects(p)) {
|
---|
2517 | first = get_nr_sects(p) + get_start_sect(p) - new;
|
---|
2518 | set_nr_sects(p, first);
|
---|
2519 | set_start_sect(p, new);
|
---|
2520 | pe->changed = 1;
|
---|
2521 | }
|
---|
2522 | }
|
---|
2523 |
|
---|
2524 | static void
|
---|
2525 | xselect(void)
|
---|
2526 | {
|
---|
2527 | char c;
|
---|
2528 |
|
---|
2529 | while (1) {
|
---|
2530 | putchar('\n');
|
---|
2531 | c = tolower(read_nonempty("Expert command (m for help): "));
|
---|
2532 | switch (c) {
|
---|
2533 | case 'a':
|
---|
2534 | if (LABEL_IS_SUN)
|
---|
2535 | sun_set_alt_cyl();
|
---|
2536 | break;
|
---|
2537 | case 'b':
|
---|
2538 | if (LABEL_IS_DOS)
|
---|
2539 | move_begin(get_partition(0, partitions));
|
---|
2540 | break;
|
---|
2541 | case 'c':
|
---|
2542 | user_cylinders = cylinders =
|
---|
2543 | read_int(1, cylinders, 1048576, 0,
|
---|
2544 | "Number of cylinders");
|
---|
2545 | if (LABEL_IS_SUN)
|
---|
2546 | sun_set_ncyl(cylinders);
|
---|
2547 | if (LABEL_IS_DOS)
|
---|
2548 | warn_cylinders();
|
---|
2549 | break;
|
---|
2550 | case 'd':
|
---|
2551 | print_raw();
|
---|
2552 | break;
|
---|
2553 | case 'e':
|
---|
2554 | if (LABEL_IS_SGI)
|
---|
2555 | sgi_set_xcyl();
|
---|
2556 | else if (LABEL_IS_SUN)
|
---|
2557 | sun_set_xcyl();
|
---|
2558 | else if (LABEL_IS_DOS)
|
---|
2559 | x_list_table(1);
|
---|
2560 | break;
|
---|
2561 | case 'f':
|
---|
2562 | if (LABEL_IS_DOS)
|
---|
2563 | fix_partition_table_order();
|
---|
2564 | break;
|
---|
2565 | case 'g':
|
---|
2566 | #if ENABLE_FEATURE_SGI_LABEL
|
---|
2567 | create_sgilabel();
|
---|
2568 | #endif
|
---|
2569 | break;
|
---|
2570 | case 'h':
|
---|
2571 | user_heads = heads = read_int(1, heads, 256, 0,
|
---|
2572 | "Number of heads");
|
---|
2573 | update_units();
|
---|
2574 | break;
|
---|
2575 | case 'i':
|
---|
2576 | if (LABEL_IS_SUN)
|
---|
2577 | sun_set_ilfact();
|
---|
2578 | break;
|
---|
2579 | case 'o':
|
---|
2580 | if (LABEL_IS_SUN)
|
---|
2581 | sun_set_rspeed();
|
---|
2582 | break;
|
---|
2583 | case 'p':
|
---|
2584 | if (LABEL_IS_SUN)
|
---|
2585 | list_table(1);
|
---|
2586 | else
|
---|
2587 | x_list_table(0);
|
---|
2588 | break;
|
---|
2589 | case 'q':
|
---|
2590 | close(fd);
|
---|
2591 | puts("");
|
---|
2592 | exit(0);
|
---|
2593 | case 'r':
|
---|
2594 | return;
|
---|
2595 | case 's':
|
---|
2596 | user_sectors = sectors = read_int(1, sectors, 63, 0,
|
---|
2597 | "Number of sectors");
|
---|
2598 | if (dos_compatible_flag) {
|
---|
2599 | sector_offset = sectors;
|
---|
2600 | printf("Warning: setting sector offset for DOS "
|
---|
2601 | "compatiblity\n");
|
---|
2602 | }
|
---|
2603 | update_units();
|
---|
2604 | break;
|
---|
2605 | case 'v':
|
---|
2606 | verify();
|
---|
2607 | break;
|
---|
2608 | case 'w':
|
---|
2609 | write_table(); /* does not return */
|
---|
2610 | break;
|
---|
2611 | case 'y':
|
---|
2612 | if (LABEL_IS_SUN)
|
---|
2613 | sun_set_pcylcount();
|
---|
2614 | break;
|
---|
2615 | default:
|
---|
2616 | xmenu();
|
---|
2617 | }
|
---|
2618 | }
|
---|
2619 | }
|
---|
2620 | #endif /* ADVANCED mode */
|
---|
2621 |
|
---|
2622 | static int
|
---|
2623 | is_ide_cdrom_or_tape(const char *device)
|
---|
2624 | {
|
---|
2625 | FILE *procf;
|
---|
2626 | char buf[100];
|
---|
2627 | struct stat statbuf;
|
---|
2628 | int is_ide = 0;
|
---|
2629 |
|
---|
2630 | /* No device was given explicitly, and we are trying some
|
---|
2631 | likely things. But opening /dev/hdc may produce errors like
|
---|
2632 | "hdc: tray open or drive not ready"
|
---|
2633 | if it happens to be a CD-ROM drive. It even happens that
|
---|
2634 | the process hangs on the attempt to read a music CD.
|
---|
2635 | So try to be careful. This only works since 2.1.73. */
|
---|
2636 |
|
---|
2637 | if (strncmp("/dev/hd", device, 7))
|
---|
2638 | return 0;
|
---|
2639 |
|
---|
2640 | snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5);
|
---|
2641 | procf = fopen(buf, "r");
|
---|
2642 | if (procf != NULL && fgets(buf, sizeof(buf), procf))
|
---|
2643 | is_ide = (!strncmp(buf, "cdrom", 5) ||
|
---|
2644 | !strncmp(buf, "tape", 4));
|
---|
2645 | else
|
---|
2646 | /* Now when this proc file does not exist, skip the
|
---|
2647 | device when it is read-only. */
|
---|
2648 | if (stat(device, &statbuf) == 0)
|
---|
2649 | is_ide = ((statbuf.st_mode & 0222) == 0);
|
---|
2650 |
|
---|
2651 | if (procf)
|
---|
2652 | fclose(procf);
|
---|
2653 | return is_ide;
|
---|
2654 | }
|
---|
2655 |
|
---|
2656 |
|
---|
2657 | static void
|
---|
2658 | trydev(const char *device, int user_specified)
|
---|
2659 | {
|
---|
2660 | int gb;
|
---|
2661 |
|
---|
2662 | disk_device = device;
|
---|
2663 | if (setjmp(listingbuf))
|
---|
2664 | return;
|
---|
2665 | if (!user_specified)
|
---|
2666 | if (is_ide_cdrom_or_tape(device))
|
---|
2667 | return;
|
---|
2668 | fd = open(disk_device, type_open);
|
---|
2669 | if (fd >= 0) {
|
---|
2670 | gb = get_boot(try_only);
|
---|
2671 | if (gb > 0) { /* I/O error */
|
---|
2672 | close(fd);
|
---|
2673 | } else if (gb < 0) { /* no DOS signature */
|
---|
2674 | list_disk_geometry();
|
---|
2675 | if (LABEL_IS_AIX) {
|
---|
2676 | return;
|
---|
2677 | }
|
---|
2678 | #if ENABLE_FEATURE_OSF_LABEL
|
---|
2679 | if (bsd_trydev(device) < 0)
|
---|
2680 | #endif
|
---|
2681 | printf("Disk %s doesn't contain a valid "
|
---|
2682 | "partition table\n", device);
|
---|
2683 | close(fd);
|
---|
2684 | } else {
|
---|
2685 | close(fd);
|
---|
2686 | list_table(0);
|
---|
2687 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
2688 | if (!LABEL_IS_SUN && partitions > 4){
|
---|
2689 | delete_partition(ext_index);
|
---|
2690 | }
|
---|
2691 | #endif
|
---|
2692 | }
|
---|
2693 | } else {
|
---|
2694 | /* Ignore other errors, since we try IDE
|
---|
2695 | and SCSI hard disks which may not be
|
---|
2696 | installed on the system. */
|
---|
2697 | if (errno == EACCES) {
|
---|
2698 | printf("Cannot open %s\n", device);
|
---|
2699 | return;
|
---|
2700 | }
|
---|
2701 | }
|
---|
2702 | }
|
---|
2703 |
|
---|
2704 | /* for fdisk -l: try all things in /proc/partitions
|
---|
2705 | that look like a partition name (do not end in a digit) */
|
---|
2706 | static void
|
---|
2707 | tryprocpt(void)
|
---|
2708 | {
|
---|
2709 | FILE *procpt;
|
---|
2710 | char line[100], ptname[100], devname[120], *s;
|
---|
2711 | int ma, mi, sz;
|
---|
2712 |
|
---|
2713 | procpt = fopen_or_warn("/proc/partitions", "r");
|
---|
2714 |
|
---|
2715 | while (fgets(line, sizeof(line), procpt)) {
|
---|
2716 | if (sscanf(line, " %d %d %d %[^\n ]",
|
---|
2717 | &ma, &mi, &sz, ptname) != 4)
|
---|
2718 | continue;
|
---|
2719 | for (s = ptname; *s; s++);
|
---|
2720 | if (isdigit(s[-1]))
|
---|
2721 | continue;
|
---|
2722 | sprintf(devname, "/dev/%s", ptname);
|
---|
2723 | trydev(devname, 0);
|
---|
2724 | }
|
---|
2725 | #if ENABLE_FEATURE_CLEAN_UP
|
---|
2726 | fclose(procpt);
|
---|
2727 | #endif
|
---|
2728 | }
|
---|
2729 |
|
---|
2730 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
2731 | static void
|
---|
2732 | unknown_command(int c)
|
---|
2733 | {
|
---|
2734 | printf("%c: unknown command\n", c);
|
---|
2735 | }
|
---|
2736 | #endif
|
---|
2737 |
|
---|
2738 | int fdisk_main(int argc, char **argv);
|
---|
2739 | int fdisk_main(int argc, char **argv)
|
---|
2740 | {
|
---|
2741 | char *str_b, *str_C, *str_H, *str_S;
|
---|
2742 | unsigned opt;
|
---|
2743 | /*
|
---|
2744 | * fdisk -v
|
---|
2745 | * fdisk -l [-b sectorsize] [-u] device ...
|
---|
2746 | * fdisk -s [partition] ...
|
---|
2747 | * fdisk [-b sectorsize] [-u] device
|
---|
2748 | *
|
---|
2749 | * Options -C, -H, -S set the geometry.
|
---|
2750 | */
|
---|
2751 | enum {
|
---|
2752 | OPT_b = 1 << 0,
|
---|
2753 | OPT_C = 1 << 1,
|
---|
2754 | OPT_H = 1 << 2,
|
---|
2755 | OPT_l = 1 << 3,
|
---|
2756 | OPT_S = 1 << 4,
|
---|
2757 | OPT_u = 1 << 5,
|
---|
2758 | OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE,
|
---|
2759 | };
|
---|
2760 |
|
---|
2761 | PTR_TO_GLOBALS = xzalloc(sizeof(G));
|
---|
2762 |
|
---|
2763 | opt = getopt32(argv, "b:C:H:lS:u" USE_FEATURE_FDISK_BLKSIZE("s"),
|
---|
2764 | &str_b, &str_C, &str_H, &str_S);
|
---|
2765 | argc -= optind;
|
---|
2766 | argv += optind;
|
---|
2767 | if (opt & OPT_b) { // -b
|
---|
2768 | /* Ugly: this sector size is really per device,
|
---|
2769 | so cannot be combined with multiple disks,
|
---|
2770 | and the same goes for the C/H/S options.
|
---|
2771 | */
|
---|
2772 | sector_size = xatoi_u(str_b);
|
---|
2773 | if (sector_size != 512 && sector_size != 1024 &&
|
---|
2774 | sector_size != 2048)
|
---|
2775 | bb_show_usage();
|
---|
2776 | sector_offset = 2;
|
---|
2777 | user_set_sector_size = 1;
|
---|
2778 | }
|
---|
2779 | if (opt & OPT_C) user_cylinders = xatoi_u(str_C); // -C
|
---|
2780 | if (opt & OPT_H) { // -H
|
---|
2781 | user_heads = xatoi_u(str_H);
|
---|
2782 | if (user_heads <= 0 || user_heads >= 256)
|
---|
2783 | user_heads = 0;
|
---|
2784 | }
|
---|
2785 | //if (opt & OPT_l) // -l
|
---|
2786 | if (opt & OPT_S) { // -S
|
---|
2787 | user_sectors = xatoi_u(str_S);
|
---|
2788 | if (user_sectors <= 0 || user_sectors >= 64)
|
---|
2789 | user_sectors = 0;
|
---|
2790 | }
|
---|
2791 | if (opt & OPT_u) display_in_cyl_units = 0; // -u
|
---|
2792 | //if (opt & OPT_s) // -s
|
---|
2793 |
|
---|
2794 | if (user_set_sector_size && argc != 1)
|
---|
2795 | printf("Warning: the -b (set sector size) option should"
|
---|
2796 | " be used with one specified device\n");
|
---|
2797 |
|
---|
2798 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
2799 | if (opt & OPT_l) {
|
---|
2800 | nowarn = 1;
|
---|
2801 | #endif
|
---|
2802 | type_open = O_RDONLY;
|
---|
2803 | if (argc > 0) {
|
---|
2804 | int k;
|
---|
2805 | #if defined(__GNUC__)
|
---|
2806 | /* avoid gcc warning:
|
---|
2807 | variable `k' might be clobbered by `longjmp' */
|
---|
2808 | (void)&k;
|
---|
2809 | #endif
|
---|
2810 | listing = 1;
|
---|
2811 | for (k = 0; k < argc; k++)
|
---|
2812 | trydev(argv[k], 1);
|
---|
2813 | } else {
|
---|
2814 | /* we no longer have default device names */
|
---|
2815 | /* but, we can use /proc/partitions instead */
|
---|
2816 | tryprocpt();
|
---|
2817 | }
|
---|
2818 | return 0;
|
---|
2819 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
2820 | }
|
---|
2821 | #endif
|
---|
2822 |
|
---|
2823 | #if ENABLE_FEATURE_FDISK_BLKSIZE
|
---|
2824 | if (opt & OPT_s) {
|
---|
2825 | long size;
|
---|
2826 | int j;
|
---|
2827 |
|
---|
2828 | nowarn = 1;
|
---|
2829 | type_open = O_RDONLY;
|
---|
2830 |
|
---|
2831 | if (argc <= 0)
|
---|
2832 | bb_show_usage();
|
---|
2833 |
|
---|
2834 | for (j = 0; j < argc; j++) {
|
---|
2835 | disk_device = argv[j];
|
---|
2836 | fd = open(disk_device, type_open);
|
---|
2837 | if (fd < 0)
|
---|
2838 | fdisk_fatal(unable_to_open);
|
---|
2839 | if (ioctl(fd, BLKGETSIZE, &size))
|
---|
2840 | fdisk_fatal(ioctl_error);
|
---|
2841 | close(fd);
|
---|
2842 | if (argc == 1)
|
---|
2843 | printf("%ld\n", size/2);
|
---|
2844 | else
|
---|
2845 | printf("%s: %ld\n", argv[j], size/2);
|
---|
2846 | }
|
---|
2847 | return 0;
|
---|
2848 | }
|
---|
2849 | #endif
|
---|
2850 |
|
---|
2851 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
2852 | if (argc != 1)
|
---|
2853 | bb_show_usage();
|
---|
2854 |
|
---|
2855 | disk_device = argv[0];
|
---|
2856 | get_boot(fdisk);
|
---|
2857 |
|
---|
2858 | if (LABEL_IS_OSF) {
|
---|
2859 | /* OSF label, and no DOS label */
|
---|
2860 | printf("Detected an OSF/1 disklabel on %s, entering "
|
---|
2861 | "disklabel mode\n", disk_device);
|
---|
2862 | bsd_select();
|
---|
2863 | /*Why do we do this? It seems to be counter-intuitive*/
|
---|
2864 | current_label_type = label_dos;
|
---|
2865 | /* If we return we may want to make an empty DOS label? */
|
---|
2866 | }
|
---|
2867 |
|
---|
2868 | while (1) {
|
---|
2869 | int c;
|
---|
2870 | putchar('\n');
|
---|
2871 | c = tolower(read_nonempty("Command (m for help): "));
|
---|
2872 | switch (c) {
|
---|
2873 | case 'a':
|
---|
2874 | if (LABEL_IS_DOS)
|
---|
2875 | toggle_active(get_partition(1, partitions));
|
---|
2876 | else if (LABEL_IS_SUN)
|
---|
2877 | toggle_sunflags(get_partition(1, partitions),
|
---|
2878 | 0x01);
|
---|
2879 | else if (LABEL_IS_SGI)
|
---|
2880 | sgi_set_bootpartition(
|
---|
2881 | get_partition(1, partitions));
|
---|
2882 | else
|
---|
2883 | unknown_command(c);
|
---|
2884 | break;
|
---|
2885 | case 'b':
|
---|
2886 | if (LABEL_IS_SGI) {
|
---|
2887 | printf("\nThe current boot file is: %s\n",
|
---|
2888 | sgi_get_bootfile());
|
---|
2889 | if (read_maybe_empty("Please enter the name of the "
|
---|
2890 | "new boot file: ") == '\n')
|
---|
2891 | printf("Boot file unchanged\n");
|
---|
2892 | else
|
---|
2893 | sgi_set_bootfile(line_ptr);
|
---|
2894 | }
|
---|
2895 | #if ENABLE_FEATURE_OSF_LABEL
|
---|
2896 | else
|
---|
2897 | bsd_select();
|
---|
2898 | #endif
|
---|
2899 | break;
|
---|
2900 | case 'c':
|
---|
2901 | if (LABEL_IS_DOS)
|
---|
2902 | toggle_dos_compatibility_flag();
|
---|
2903 | else if (LABEL_IS_SUN)
|
---|
2904 | toggle_sunflags(get_partition(1, partitions),
|
---|
2905 | 0x10);
|
---|
2906 | else if (LABEL_IS_SGI)
|
---|
2907 | sgi_set_swappartition(
|
---|
2908 | get_partition(1, partitions));
|
---|
2909 | else
|
---|
2910 | unknown_command(c);
|
---|
2911 | break;
|
---|
2912 | case 'd':
|
---|
2913 | {
|
---|
2914 | int j;
|
---|
2915 | /* If sgi_label then don't use get_existing_partition,
|
---|
2916 | let the user select a partition, since
|
---|
2917 | get_existing_partition() only works for Linux-like
|
---|
2918 | partition tables */
|
---|
2919 | if (!LABEL_IS_SGI) {
|
---|
2920 | j = get_existing_partition(1, partitions);
|
---|
2921 | } else {
|
---|
2922 | j = get_partition(1, partitions);
|
---|
2923 | }
|
---|
2924 | if (j >= 0)
|
---|
2925 | delete_partition(j);
|
---|
2926 | }
|
---|
2927 | break;
|
---|
2928 | case 'i':
|
---|
2929 | if (LABEL_IS_SGI)
|
---|
2930 | create_sgiinfo();
|
---|
2931 | else
|
---|
2932 | unknown_command(c);
|
---|
2933 | case 'l':
|
---|
2934 | list_types(get_sys_types());
|
---|
2935 | break;
|
---|
2936 | case 'm':
|
---|
2937 | menu();
|
---|
2938 | break;
|
---|
2939 | case 'n':
|
---|
2940 | new_partition();
|
---|
2941 | break;
|
---|
2942 | case 'o':
|
---|
2943 | create_doslabel();
|
---|
2944 | break;
|
---|
2945 | case 'p':
|
---|
2946 | list_table(0);
|
---|
2947 | break;
|
---|
2948 | case 'q':
|
---|
2949 | close(fd);
|
---|
2950 | puts("");
|
---|
2951 | return 0;
|
---|
2952 | case 's':
|
---|
2953 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
2954 | create_sunlabel();
|
---|
2955 | #endif
|
---|
2956 | break;
|
---|
2957 | case 't':
|
---|
2958 | change_sysid();
|
---|
2959 | break;
|
---|
2960 | case 'u':
|
---|
2961 | change_units();
|
---|
2962 | break;
|
---|
2963 | case 'v':
|
---|
2964 | verify();
|
---|
2965 | break;
|
---|
2966 | case 'w':
|
---|
2967 | write_table(); /* does not return */
|
---|
2968 | break;
|
---|
2969 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
2970 | case 'x':
|
---|
2971 | if (LABEL_IS_SGI) {
|
---|
2972 | printf("\n\tSorry, no experts menu for SGI "
|
---|
2973 | "partition tables available\n\n");
|
---|
2974 | } else
|
---|
2975 | xselect();
|
---|
2976 | break;
|
---|
2977 | #endif
|
---|
2978 | default:
|
---|
2979 | unknown_command(c);
|
---|
2980 | menu();
|
---|
2981 | }
|
---|
2982 | }
|
---|
2983 | return 0;
|
---|
2984 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
2985 | }
|
---|