[3320] | 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 GPLv2 or later, see file LICENSE in this source tree.
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| 8 | */
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| 9 |
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| 10 | #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 <sys/mount.h>
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| 16 | #if !defined(BLKSSZGET)
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| 17 | # define BLKSSZGET _IO(0x12, 104)
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| 18 | #endif
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| 19 | #if !defined(BLKGETSIZE64)
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| 20 | # define BLKGETSIZE64 _IOR(0x12,114,size_t)
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| 21 | #endif
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| 22 | #include "libbb.h"
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| 23 |
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| 24 | #if BB_LITTLE_ENDIAN
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| 25 | # define inline_if_little_endian ALWAYS_INLINE
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| 26 | #else
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| 27 | # define inline_if_little_endian /* nothing */
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| 28 | #endif
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| 29 |
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| 30 |
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| 31 | /* Looks like someone forgot to add this to config system */
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| 32 | #ifndef ENABLE_FEATURE_FDISK_BLKSIZE
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| 33 | # define ENABLE_FEATURE_FDISK_BLKSIZE 0
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| 34 | # define IF_FEATURE_FDISK_BLKSIZE(a)
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| 35 | #endif
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| 36 |
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| 37 | #define DEFAULT_SECTOR_SIZE 512
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| 38 | #define DEFAULT_SECTOR_SIZE_STR "512"
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| 39 | #define MAX_SECTOR_SIZE 2048
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| 40 | #define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */
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| 41 | #define MAXIMUM_PARTS 60
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| 42 |
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| 43 | #define ACTIVE_FLAG 0x80
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| 44 |
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| 45 | #define EXTENDED 0x05
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| 46 | #define WIN98_EXTENDED 0x0f
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| 47 | #define LINUX_PARTITION 0x81
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| 48 | #define LINUX_SWAP 0x82
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| 49 | #define LINUX_NATIVE 0x83
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| 50 | #define LINUX_EXTENDED 0x85
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| 51 | #define LINUX_LVM 0x8e
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| 52 | #define LINUX_RAID 0xfd
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| 53 |
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| 54 |
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| 55 | enum {
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| 56 | OPT_b = 1 << 0,
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| 57 | OPT_C = 1 << 1,
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| 58 | OPT_H = 1 << 2,
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| 59 | OPT_l = 1 << 3,
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| 60 | OPT_S = 1 << 4,
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| 61 | OPT_u = 1 << 5,
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| 62 | OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE,
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| 63 | };
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| 64 |
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| 65 |
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| 66 | typedef unsigned long long ullong;
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| 67 | /* Used for sector numbers. Partition formats we know
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| 68 | * do not support more than 2^32 sectors
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| 69 | */
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| 70 | typedef uint32_t sector_t;
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| 71 | #if UINT_MAX == 4294967295
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| 72 | # define SECT_FMT ""
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| 73 | #elif ULONG_MAX == 4294967295
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| 74 | # define SECT_FMT "l"
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| 75 | #else
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| 76 | # error Cant detect sizeof(uint32_t)
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| 77 | #endif
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| 78 |
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| 79 | struct hd_geometry {
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| 80 | unsigned char heads;
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| 81 | unsigned char sectors;
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| 82 | unsigned short cylinders;
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| 83 | unsigned long start;
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| 84 | };
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| 85 |
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| 86 | #define HDIO_GETGEO 0x0301 /* get device geometry */
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| 87 |
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| 88 | static const char msg_building_new_label[] ALIGN1 =
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| 89 | "Building a new %s. Changes will remain in memory only,\n"
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| 90 | "until you decide to write them. After that the previous content\n"
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| 91 | "won't be recoverable.\n\n";
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| 92 |
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| 93 | static const char msg_part_already_defined[] ALIGN1 =
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| 94 | "Partition %u is already defined, delete it before re-adding\n";
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| 95 |
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| 96 |
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| 97 | struct partition {
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| 98 | unsigned char boot_ind; /* 0x80 - active */
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| 99 | unsigned char head; /* starting head */
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| 100 | unsigned char sector; /* starting sector */
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| 101 | unsigned char cyl; /* starting cylinder */
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| 102 | unsigned char sys_ind; /* what partition type */
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| 103 | unsigned char end_head; /* end head */
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| 104 | unsigned char end_sector; /* end sector */
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| 105 | unsigned char end_cyl; /* end cylinder */
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| 106 | unsigned char start4[4]; /* starting sector counting from 0 */
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| 107 | unsigned char size4[4]; /* nr of sectors in partition */
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| 108 | } PACKED;
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| 109 |
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| 110 | /*
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| 111 | * per partition table entry data
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| 112 | *
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| 113 | * The four primary partitions have the same sectorbuffer (MBRbuffer)
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| 114 | * and have NULL ext_pointer.
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| 115 | * Each logical partition table entry has two pointers, one for the
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| 116 | * partition and one link to the next one.
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| 117 | */
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| 118 | struct pte {
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| 119 | struct partition *part_table; /* points into sectorbuffer */
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| 120 | struct partition *ext_pointer; /* points into sectorbuffer */
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| 121 | sector_t offset_from_dev_start; /* disk sector number */
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| 122 | char *sectorbuffer; /* disk sector contents */
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| 123 | #if ENABLE_FEATURE_FDISK_WRITABLE
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| 124 | char changed; /* boolean */
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| 125 | #endif
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| 126 | };
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| 127 |
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| 128 | #define unable_to_open "can't open '%s'"
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| 129 | #define unable_to_read "can't read from %s"
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| 130 | #define unable_to_seek "can't seek on %s"
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| 131 |
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| 132 | enum label_type {
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| 133 | LABEL_DOS, LABEL_SUN, LABEL_SGI, LABEL_AIX, LABEL_OSF, LABEL_GPT
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| 134 | };
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| 135 |
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| 136 | #define LABEL_IS_DOS (LABEL_DOS == current_label_type)
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| 137 |
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| 138 | #if ENABLE_FEATURE_SUN_LABEL
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| 139 | #define LABEL_IS_SUN (LABEL_SUN == current_label_type)
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| 140 | #define STATIC_SUN static
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| 141 | #else
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| 142 | #define LABEL_IS_SUN 0
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| 143 | #define STATIC_SUN extern
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| 144 | #endif
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| 145 |
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| 146 | #if ENABLE_FEATURE_SGI_LABEL
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| 147 | #define LABEL_IS_SGI (LABEL_SGI == current_label_type)
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| 148 | #define STATIC_SGI static
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| 149 | #else
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| 150 | #define LABEL_IS_SGI 0
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| 151 | #define STATIC_SGI extern
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| 152 | #endif
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| 153 |
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| 154 | #if ENABLE_FEATURE_AIX_LABEL
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| 155 | #define LABEL_IS_AIX (LABEL_AIX == current_label_type)
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| 156 | #define STATIC_AIX static
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| 157 | #else
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| 158 | #define LABEL_IS_AIX 0
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| 159 | #define STATIC_AIX extern
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| 160 | #endif
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| 161 |
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| 162 | #if ENABLE_FEATURE_OSF_LABEL
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| 163 | #define LABEL_IS_OSF (LABEL_OSF == current_label_type)
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| 164 | #define STATIC_OSF static
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| 165 | #else
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| 166 | #define LABEL_IS_OSF 0
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| 167 | #define STATIC_OSF extern
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| 168 | #endif
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| 169 |
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| 170 | #if ENABLE_FEATURE_GPT_LABEL
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| 171 | #define LABEL_IS_GPT (LABEL_GPT == current_label_type)
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| 172 | #define STATIC_GPT static
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| 173 | #else
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| 174 | #define LABEL_IS_GPT 0
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| 175 | #define STATIC_GPT extern
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| 176 | #endif
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| 177 |
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| 178 | enum action { OPEN_MAIN, TRY_ONLY, CREATE_EMPTY_DOS, CREATE_EMPTY_SUN };
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| 179 |
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| 180 | static void update_units(void);
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| 181 | #if ENABLE_FEATURE_FDISK_WRITABLE
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| 182 | static void change_units(void);
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| 183 | static void reread_partition_table(int leave);
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| 184 | static void delete_partition(int i);
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| 185 | static unsigned get_partition(int warn, unsigned max);
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| 186 | static void list_types(const char *const *sys);
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| 187 | static sector_t read_int(sector_t low, sector_t dflt, sector_t high, sector_t base, const char *mesg);
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| 188 | #endif
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| 189 | static const char *partition_type(unsigned char type);
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| 190 | static void get_geometry(void);
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| 191 | static void read_pte(struct pte *pe, sector_t offset);
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| 192 | #if ENABLE_FEATURE_SUN_LABEL || ENABLE_FEATURE_FDISK_WRITABLE
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| 193 | static int get_boot(enum action what);
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| 194 | #else
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| 195 | static int get_boot(void);
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| 196 | #endif
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| 197 |
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| 198 | #define PLURAL 0
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| 199 | #define SINGULAR 1
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| 200 |
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| 201 | static sector_t get_start_sect(const struct partition *p);
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| 202 | static sector_t get_nr_sects(const struct partition *p);
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| 203 |
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| 204 | /* DOS partition types */
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| 205 |
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| 206 | static const char *const i386_sys_types[] = {
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| 207 | "\x00" "Empty",
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| 208 | "\x01" "FAT12",
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| 209 | "\x04" "FAT16 <32M",
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| 210 | "\x05" "Extended", /* DOS 3.3+ extended partition */
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| 211 | "\x06" "FAT16", /* DOS 16-bit >=32M */
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| 212 | "\x07" "HPFS/NTFS", /* OS/2 IFS, eg, HPFS or NTFS or QNX */
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| 213 | "\x0a" "OS/2 Boot Manager",/* OS/2 Boot Manager */
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| 214 | "\x0b" "Win95 FAT32",
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| 215 | "\x0c" "Win95 FAT32 (LBA)",/* LBA really is 'Extended Int 13h' */
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| 216 | "\x0e" "Win95 FAT16 (LBA)",
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| 217 | "\x0f" "Win95 Ext'd (LBA)",
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| 218 | "\x11" "Hidden FAT12",
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| 219 | "\x12" "Compaq diagnostics",
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| 220 | "\x14" "Hidden FAT16 <32M",
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| 221 | "\x16" "Hidden FAT16",
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| 222 | "\x17" "Hidden HPFS/NTFS",
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| 223 | "\x1b" "Hidden Win95 FAT32",
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| 224 | "\x1c" "Hidden W95 FAT32 (LBA)",
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| 225 | "\x1e" "Hidden W95 FAT16 (LBA)",
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| 226 | "\x3c" "Part.Magic recovery",
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| 227 | "\x41" "PPC PReP Boot",
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| 228 | "\x42" "SFS",
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| 229 | "\x63" "GNU HURD or SysV", /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
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| 230 | "\x80" "Old Minix", /* Minix 1.4a and earlier */
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| 231 | "\x81" "Minix / old Linux",/* Minix 1.4b and later */
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| 232 | "\x82" "Linux swap", /* also Solaris */
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| 233 | "\x83" "Linux",
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| 234 | "\x84" "OS/2 hidden C: drive",
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| 235 | "\x85" "Linux extended",
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| 236 | "\x86" "NTFS volume set",
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| 237 | "\x87" "NTFS volume set",
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| 238 | "\x8e" "Linux LVM",
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| 239 | "\x9f" "BSD/OS", /* BSDI */
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| 240 | "\xa0" "Thinkpad hibernation",
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| 241 | "\xa5" "FreeBSD", /* various BSD flavours */
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| 242 | "\xa6" "OpenBSD",
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| 243 | "\xa8" "Darwin UFS",
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| 244 | "\xa9" "NetBSD",
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| 245 | "\xab" "Darwin boot",
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| 246 | "\xb7" "BSDI fs",
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| 247 | "\xb8" "BSDI swap",
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| 248 | "\xbe" "Solaris boot",
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| 249 | "\xeb" "BeOS fs",
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| 250 | "\xee" "EFI GPT", /* Intel EFI GUID Partition Table */
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| 251 | "\xef" "EFI (FAT-12/16/32)", /* Intel EFI System Partition */
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| 252 | "\xf0" "Linux/PA-RISC boot", /* Linux/PA-RISC boot loader */
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| 253 | "\xf2" "DOS secondary", /* DOS 3.3+ secondary */
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| 254 | "\xfd" "Linux raid autodetect", /* New (2.2.x) raid partition with
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| 255 | autodetect using persistent
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| 256 | superblock */
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| 257 | #if 0 /* ENABLE_WEIRD_PARTITION_TYPES */
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| 258 | "\x02" "XENIX root",
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| 259 | "\x03" "XENIX usr",
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| 260 | "\x08" "AIX", /* AIX boot (AIX -- PS/2 port) or SplitDrive */
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| 261 | "\x09" "AIX bootable", /* AIX data or Coherent */
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| 262 | "\x10" "OPUS",
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| 263 | "\x18" "AST SmartSleep",
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| 264 | "\x24" "NEC DOS",
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| 265 | "\x39" "Plan 9",
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| 266 | "\x40" "Venix 80286",
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| 267 | "\x4d" "QNX4.x",
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| 268 | "\x4e" "QNX4.x 2nd part",
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| 269 | "\x4f" "QNX4.x 3rd part",
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| 270 | "\x50" "OnTrack DM",
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| 271 | "\x51" "OnTrack DM6 Aux1", /* (or Novell) */
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| 272 | "\x52" "CP/M", /* CP/M or Microport SysV/AT */
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| 273 | "\x53" "OnTrack DM6 Aux3",
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| 274 | "\x54" "OnTrackDM6",
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| 275 | "\x55" "EZ-Drive",
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| 276 | "\x56" "Golden Bow",
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| 277 | "\x5c" "Priam Edisk",
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| 278 | "\x61" "SpeedStor",
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| 279 | "\x64" "Novell Netware 286",
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| 280 | "\x65" "Novell Netware 386",
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| 281 | "\x70" "DiskSecure Multi-Boot",
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| 282 | "\x75" "PC/IX",
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| 283 | "\x93" "Amoeba",
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| 284 | "\x94" "Amoeba BBT", /* (bad block table) */
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| 285 | "\xa7" "NeXTSTEP",
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| 286 | "\xbb" "Boot Wizard hidden",
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| 287 | "\xc1" "DRDOS/sec (FAT-12)",
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| 288 | "\xc4" "DRDOS/sec (FAT-16 < 32M)",
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| 289 | "\xc6" "DRDOS/sec (FAT-16)",
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| 290 | "\xc7" "Syrinx",
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| 291 | "\xda" "Non-FS data",
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| 292 | "\xdb" "CP/M / CTOS / ...",/* CP/M or Concurrent CP/M or
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| 293 | Concurrent DOS or CTOS */
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| 294 | "\xde" "Dell Utility", /* Dell PowerEdge Server utilities */
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| 295 | "\xdf" "BootIt", /* BootIt EMBRM */
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| 296 | "\xe1" "DOS access", /* DOS access or SpeedStor 12-bit FAT
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| 297 | extended partition */
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| 298 | "\xe3" "DOS R/O", /* DOS R/O or SpeedStor */
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| 299 | "\xe4" "SpeedStor", /* SpeedStor 16-bit FAT extended
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| 300 | partition < 1024 cyl. */
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| 301 | "\xf1" "SpeedStor",
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| 302 | "\xf4" "SpeedStor", /* SpeedStor large partition */
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| 303 | "\xfe" "LANstep", /* SpeedStor >1024 cyl. or LANstep */
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| 304 | "\xff" "BBT", /* Xenix Bad Block Table */
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| 305 | #endif
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| 306 | NULL
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| 307 | };
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| 308 |
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| 309 | enum {
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| 310 | dev_fd = 3 /* the disk */
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| 311 | };
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| 312 |
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| 313 | /* Globals */
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| 314 | struct globals {
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| 315 | char *line_ptr;
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| 316 |
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| 317 | const char *disk_device;
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| 318 | int g_partitions; // = 4; /* maximum partition + 1 */
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| 319 | unsigned units_per_sector; // = 1;
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| 320 | unsigned sector_size; // = DEFAULT_SECTOR_SIZE;
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| 321 | unsigned user_set_sector_size;
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| 322 | unsigned sector_offset; // = 1;
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| 323 | unsigned g_heads, g_sectors, g_cylinders;
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| 324 | smallint /* enum label_type */ current_label_type;
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| 325 | smallint display_in_cyl_units; // = 1;
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| 326 | #if ENABLE_FEATURE_OSF_LABEL
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| 327 | smallint possibly_osf_label;
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| 328 | #endif
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| 329 |
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| 330 | smallint listing; /* no aborts for fdisk -l */
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| 331 | smallint dos_compatible_flag; // = 1;
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| 332 | #if ENABLE_FEATURE_FDISK_WRITABLE
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| 333 | //int dos_changed;
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| 334 | smallint nowarn; /* no warnings for fdisk -l/-s */
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| 335 | #endif
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| 336 | int ext_index; /* the prime extended partition */
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| 337 | unsigned user_cylinders, user_heads, user_sectors;
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| 338 | unsigned pt_heads, pt_sectors;
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| 339 | unsigned kern_heads, kern_sectors;
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| 340 | sector_t extended_offset; /* offset of link pointers */
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| 341 | sector_t total_number_of_sectors;
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| 342 |
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| 343 | jmp_buf listingbuf;
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| 344 | char line_buffer[80];
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| 345 | char partname_buffer[80];
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| 346 | /* Raw disk label. For DOS-type partition tables the MBR,
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| 347 | * with descriptions of the primary partitions. */
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| 348 | char MBRbuffer[MAX_SECTOR_SIZE];
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| 349 | /* Partition tables */
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| 350 | struct pte ptes[MAXIMUM_PARTS];
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| 351 | };
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| 352 | #define G (*ptr_to_globals)
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| 353 | #define line_ptr (G.line_ptr )
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| 354 | #define disk_device (G.disk_device )
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| 355 | #define g_partitions (G.g_partitions )
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| 356 | #define units_per_sector (G.units_per_sector )
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| 357 | #define sector_size (G.sector_size )
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| 358 | #define user_set_sector_size (G.user_set_sector_size)
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| 359 | #define sector_offset (G.sector_offset )
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| 360 | #define g_heads (G.g_heads )
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| 361 | #define g_sectors (G.g_sectors )
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| 362 | #define g_cylinders (G.g_cylinders )
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| 363 | #define current_label_type (G.current_label_type )
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| 364 | #define display_in_cyl_units (G.display_in_cyl_units)
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| 365 | #define possibly_osf_label (G.possibly_osf_label )
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| 366 | #define listing (G.listing )
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| 367 | #define dos_compatible_flag (G.dos_compatible_flag )
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| 368 | #define nowarn (G.nowarn )
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| 369 | #define ext_index (G.ext_index )
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| 370 | #define user_cylinders (G.user_cylinders )
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| 371 | #define user_heads (G.user_heads )
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| 372 | #define user_sectors (G.user_sectors )
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| 373 | #define pt_heads (G.pt_heads )
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| 374 | #define pt_sectors (G.pt_sectors )
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| 375 | #define kern_heads (G.kern_heads )
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| 376 | #define kern_sectors (G.kern_sectors )
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| 377 | #define extended_offset (G.extended_offset )
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| 378 | #define total_number_of_sectors (G.total_number_of_sectors)
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| 379 | #define listingbuf (G.listingbuf )
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| 380 | #define line_buffer (G.line_buffer )
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| 381 | #define partname_buffer (G.partname_buffer)
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| 382 | #define MBRbuffer (G.MBRbuffer )
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| 383 | #define ptes (G.ptes )
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| 384 | #define INIT_G() do { \
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| 385 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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| 386 | sector_size = DEFAULT_SECTOR_SIZE; \
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| 387 | sector_offset = 1; \
|
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| 388 | g_partitions = 4; \
|
---|
| 389 | display_in_cyl_units = 1; \
|
---|
| 390 | units_per_sector = 1; \
|
---|
| 391 | dos_compatible_flag = 1; \
|
---|
| 392 | } while (0)
|
---|
| 393 |
|
---|
| 394 |
|
---|
| 395 | /* TODO: move to libbb? */
|
---|
| 396 | /* TODO: return unsigned long long, FEATURE_FDISK_BLKSIZE _can_ handle
|
---|
| 397 | * disks > 2^32 sectors
|
---|
| 398 | */
|
---|
| 399 | static sector_t bb_BLKGETSIZE_sectors(int fd)
|
---|
| 400 | {
|
---|
| 401 | uint64_t v64;
|
---|
| 402 | unsigned long longsectors;
|
---|
| 403 |
|
---|
| 404 | if (ioctl(fd, BLKGETSIZE64, &v64) == 0) {
|
---|
| 405 | /* Got bytes, convert to 512 byte sectors */
|
---|
| 406 | v64 >>= 9;
|
---|
| 407 | if (v64 != (sector_t)v64) {
|
---|
| 408 | ret_trunc:
|
---|
| 409 | /* Not only DOS, but all other partition tables
|
---|
| 410 | * we support can't record more than 32 bit
|
---|
| 411 | * sector counts or offsets
|
---|
| 412 | */
|
---|
| 413 | bb_error_msg("device has more than 2^32 sectors, can't use all of them");
|
---|
| 414 | v64 = (uint32_t)-1L;
|
---|
| 415 | }
|
---|
| 416 | return v64;
|
---|
| 417 | }
|
---|
| 418 | /* Needs temp of type long */
|
---|
| 419 | if (ioctl(fd, BLKGETSIZE, &longsectors)) {
|
---|
| 420 | /* Perhaps this is a disk image */
|
---|
| 421 | off_t sz = lseek(fd, 0, SEEK_END);
|
---|
| 422 | longsectors = 0;
|
---|
| 423 | if (sz > 0)
|
---|
| 424 | longsectors = (uoff_t)sz / sector_size;
|
---|
| 425 | lseek(fd, 0, SEEK_SET);
|
---|
| 426 | }
|
---|
| 427 | if (sizeof(long) > sizeof(sector_t)
|
---|
| 428 | && longsectors != (sector_t)longsectors
|
---|
| 429 | ) {
|
---|
| 430 | goto ret_trunc;
|
---|
| 431 | }
|
---|
| 432 | return longsectors;
|
---|
| 433 | }
|
---|
| 434 |
|
---|
| 435 |
|
---|
| 436 | #define IS_EXTENDED(i) \
|
---|
| 437 | ((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED)
|
---|
| 438 |
|
---|
| 439 | #define cround(n) (display_in_cyl_units ? ((n)/units_per_sector)+1 : (n))
|
---|
| 440 |
|
---|
| 441 | #define scround(x) (((x)+units_per_sector-1)/units_per_sector)
|
---|
| 442 |
|
---|
| 443 | #define pt_offset(b, n) \
|
---|
| 444 | ((struct partition *)((b) + 0x1be + (n) * sizeof(struct partition)))
|
---|
| 445 |
|
---|
| 446 | #define sector(s) ((s) & 0x3f)
|
---|
| 447 |
|
---|
| 448 | #define cylinder(s, c) ((c) | (((s) & 0xc0) << 2))
|
---|
| 449 |
|
---|
| 450 | #define hsc2sector(h,s,c) \
|
---|
| 451 | (sector(s) - 1 + sectors * ((h) + heads * cylinder(s,c)))
|
---|
| 452 |
|
---|
| 453 | static void
|
---|
| 454 | close_dev_fd(void)
|
---|
| 455 | {
|
---|
| 456 | /* Not really closing, but making sure it is open, and to harmless place */
|
---|
| 457 | xmove_fd(xopen(bb_dev_null, O_RDONLY), dev_fd);
|
---|
| 458 | }
|
---|
| 459 |
|
---|
| 460 | /*
|
---|
| 461 | * Return partition name - uses static storage
|
---|
| 462 | */
|
---|
| 463 | static const char *
|
---|
| 464 | partname(const char *dev, int pno, int lth)
|
---|
| 465 | {
|
---|
| 466 | const char *p;
|
---|
| 467 | int w, wp;
|
---|
| 468 | int bufsiz;
|
---|
| 469 | char *bufp;
|
---|
| 470 |
|
---|
| 471 | bufp = partname_buffer;
|
---|
| 472 | bufsiz = sizeof(partname_buffer);
|
---|
| 473 |
|
---|
| 474 | w = strlen(dev);
|
---|
| 475 | p = "";
|
---|
| 476 |
|
---|
| 477 | if (isdigit(dev[w-1]))
|
---|
| 478 | p = "p";
|
---|
| 479 |
|
---|
| 480 | /* devfs kludge - note: fdisk partition names are not supposed
|
---|
| 481 | to equal kernel names, so there is no reason to do this */
|
---|
| 482 | if (strcmp(dev + w - 4, "disc") == 0) {
|
---|
| 483 | w -= 4;
|
---|
| 484 | p = "part";
|
---|
| 485 | }
|
---|
| 486 |
|
---|
| 487 | wp = strlen(p);
|
---|
| 488 |
|
---|
| 489 | if (lth) {
|
---|
| 490 | snprintf(bufp, bufsiz, "%*.*s%s%-2u",
|
---|
| 491 | lth-wp-2, w, dev, p, pno);
|
---|
| 492 | } else {
|
---|
| 493 | snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
|
---|
| 494 | }
|
---|
| 495 | return bufp;
|
---|
| 496 | }
|
---|
| 497 |
|
---|
| 498 | static ALWAYS_INLINE struct partition *
|
---|
| 499 | get_part_table(int i)
|
---|
| 500 | {
|
---|
| 501 | return ptes[i].part_table;
|
---|
| 502 | }
|
---|
| 503 |
|
---|
| 504 | static const char *
|
---|
| 505 | str_units(int n)
|
---|
| 506 | { /* n==1: use singular */
|
---|
| 507 | if (n == 1)
|
---|
| 508 | return display_in_cyl_units ? "cylinder" : "sector";
|
---|
| 509 | return display_in_cyl_units ? "cylinders" : "sectors";
|
---|
| 510 | }
|
---|
| 511 |
|
---|
| 512 | static int
|
---|
| 513 | valid_part_table_flag(const char *mbuffer)
|
---|
| 514 | {
|
---|
| 515 | return (mbuffer[510] == 0x55 && (uint8_t)mbuffer[511] == 0xaa);
|
---|
| 516 | }
|
---|
| 517 |
|
---|
| 518 | static void fdisk_fatal(const char *why)
|
---|
| 519 | {
|
---|
| 520 | if (listing) {
|
---|
| 521 | close_dev_fd();
|
---|
| 522 | longjmp(listingbuf, 1);
|
---|
| 523 | }
|
---|
| 524 | bb_error_msg_and_die(why, disk_device);
|
---|
| 525 | }
|
---|
| 526 |
|
---|
| 527 | static void
|
---|
| 528 | seek_sector(sector_t secno)
|
---|
| 529 | {
|
---|
| 530 | #if ENABLE_FDISK_SUPPORT_LARGE_DISKS
|
---|
| 531 | off64_t off = (off64_t)secno * sector_size;
|
---|
| 532 | if (lseek64(dev_fd, off, SEEK_SET) == (off64_t) -1)
|
---|
| 533 | fdisk_fatal(unable_to_seek);
|
---|
| 534 | #else
|
---|
| 535 | uint64_t off = (uint64_t)secno * sector_size;
|
---|
| 536 | if (off > MAXINT(off_t)
|
---|
| 537 | || lseek(dev_fd, (off_t)off, SEEK_SET) == (off_t) -1
|
---|
| 538 | ) {
|
---|
| 539 | fdisk_fatal(unable_to_seek);
|
---|
| 540 | }
|
---|
| 541 | #endif
|
---|
| 542 | }
|
---|
| 543 |
|
---|
| 544 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 545 | /* Read line; return 0 or first printable char */
|
---|
| 546 | static int
|
---|
| 547 | read_line(const char *prompt)
|
---|
| 548 | {
|
---|
| 549 | int sz;
|
---|
| 550 |
|
---|
| 551 | sz = read_line_input(prompt, line_buffer, sizeof(line_buffer), NULL);
|
---|
| 552 | if (sz <= 0)
|
---|
| 553 | exit(EXIT_SUCCESS); /* Ctrl-D or Ctrl-C */
|
---|
| 554 |
|
---|
| 555 | if (line_buffer[sz-1] == '\n')
|
---|
| 556 | line_buffer[--sz] = '\0';
|
---|
| 557 |
|
---|
| 558 | line_ptr = line_buffer;
|
---|
| 559 | while (*line_ptr != '\0' && (unsigned char)*line_ptr <= ' ')
|
---|
| 560 | line_ptr++;
|
---|
| 561 | return *line_ptr;
|
---|
| 562 | }
|
---|
| 563 |
|
---|
| 564 | static void
|
---|
| 565 | set_all_unchanged(void)
|
---|
| 566 | {
|
---|
| 567 | int i;
|
---|
| 568 |
|
---|
| 569 | for (i = 0; i < MAXIMUM_PARTS; i++)
|
---|
| 570 | ptes[i].changed = 0;
|
---|
| 571 | }
|
---|
| 572 |
|
---|
| 573 | static ALWAYS_INLINE void
|
---|
| 574 | set_changed(int i)
|
---|
| 575 | {
|
---|
| 576 | ptes[i].changed = 1;
|
---|
| 577 | }
|
---|
| 578 |
|
---|
| 579 | static ALWAYS_INLINE void
|
---|
| 580 | write_part_table_flag(char *b)
|
---|
| 581 | {
|
---|
| 582 | b[510] = 0x55;
|
---|
| 583 | b[511] = 0xaa;
|
---|
| 584 | }
|
---|
| 585 |
|
---|
| 586 | static char
|
---|
| 587 | read_nonempty(const char *mesg)
|
---|
| 588 | {
|
---|
| 589 | while (!read_line(mesg))
|
---|
| 590 | continue;
|
---|
| 591 | return *line_ptr;
|
---|
| 592 | }
|
---|
| 593 |
|
---|
| 594 | static char
|
---|
| 595 | read_maybe_empty(const char *mesg)
|
---|
| 596 | {
|
---|
| 597 | if (!read_line(mesg)) {
|
---|
| 598 | line_ptr = line_buffer;
|
---|
| 599 | line_ptr[0] = '\n';
|
---|
| 600 | line_ptr[1] = '\0';
|
---|
| 601 | }
|
---|
| 602 | return line_ptr[0];
|
---|
| 603 | }
|
---|
| 604 |
|
---|
| 605 | static int
|
---|
| 606 | read_hex(const char *const *sys)
|
---|
| 607 | {
|
---|
| 608 | unsigned long v;
|
---|
| 609 | while (1) {
|
---|
| 610 | read_nonempty("Hex code (type L to list codes): ");
|
---|
| 611 | if ((line_ptr[0] | 0x20) == 'l') {
|
---|
| 612 | list_types(sys);
|
---|
| 613 | continue;
|
---|
| 614 | }
|
---|
| 615 | v = bb_strtoul(line_ptr, NULL, 16);
|
---|
| 616 | if (v <= 0xff)
|
---|
| 617 | return v;
|
---|
| 618 | }
|
---|
| 619 | }
|
---|
| 620 |
|
---|
| 621 | static void
|
---|
| 622 | write_sector(sector_t secno, const void *buf)
|
---|
| 623 | {
|
---|
| 624 | seek_sector(secno);
|
---|
| 625 | xwrite(dev_fd, buf, sector_size);
|
---|
| 626 | }
|
---|
| 627 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
| 628 |
|
---|
| 629 |
|
---|
| 630 | #include "fdisk_aix.c"
|
---|
| 631 |
|
---|
| 632 | struct sun_partition {
|
---|
| 633 | unsigned char info[128]; /* Informative text string */
|
---|
| 634 | unsigned char spare0[14];
|
---|
| 635 | struct sun_info {
|
---|
| 636 | unsigned char spare1;
|
---|
| 637 | unsigned char id;
|
---|
| 638 | unsigned char spare2;
|
---|
| 639 | unsigned char flags;
|
---|
| 640 | } infos[8];
|
---|
| 641 | unsigned char spare1[246]; /* Boot information etc. */
|
---|
| 642 | unsigned short rspeed; /* Disk rotational speed */
|
---|
| 643 | unsigned short pcylcount; /* Physical cylinder count */
|
---|
| 644 | unsigned short sparecyl; /* extra sects per cylinder */
|
---|
| 645 | unsigned char spare2[4]; /* More magic... */
|
---|
| 646 | unsigned short ilfact; /* Interleave factor */
|
---|
| 647 | unsigned short ncyl; /* Data cylinder count */
|
---|
| 648 | unsigned short nacyl; /* Alt. cylinder count */
|
---|
| 649 | unsigned short ntrks; /* Tracks per cylinder */
|
---|
| 650 | unsigned short nsect; /* Sectors per track */
|
---|
| 651 | unsigned char spare3[4]; /* Even more magic... */
|
---|
| 652 | struct sun_partinfo {
|
---|
| 653 | uint32_t start_cylinder;
|
---|
| 654 | uint32_t num_sectors;
|
---|
| 655 | } partitions[8];
|
---|
| 656 | unsigned short magic; /* Magic number */
|
---|
| 657 | unsigned short csum; /* Label xor'd checksum */
|
---|
| 658 | } FIX_ALIASING;
|
---|
| 659 | typedef struct sun_partition sun_partition;
|
---|
| 660 | #define sunlabel ((sun_partition *)MBRbuffer)
|
---|
| 661 | STATIC_OSF void bsd_select(void);
|
---|
| 662 | STATIC_OSF void xbsd_print_disklabel(int);
|
---|
| 663 | #include "fdisk_osf.c"
|
---|
| 664 |
|
---|
| 665 | STATIC_GPT void gpt_list_table(int xtra);
|
---|
| 666 | #include "fdisk_gpt.c"
|
---|
| 667 |
|
---|
| 668 | #if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL
|
---|
| 669 | static uint16_t
|
---|
| 670 | fdisk_swap16(uint16_t x)
|
---|
| 671 | {
|
---|
| 672 | return (x << 8) | (x >> 8);
|
---|
| 673 | }
|
---|
| 674 |
|
---|
| 675 | static uint32_t
|
---|
| 676 | fdisk_swap32(uint32_t x)
|
---|
| 677 | {
|
---|
| 678 | return (x << 24) |
|
---|
| 679 | ((x & 0xFF00) << 8) |
|
---|
| 680 | ((x & 0xFF0000) >> 8) |
|
---|
| 681 | (x >> 24);
|
---|
| 682 | }
|
---|
| 683 | #endif
|
---|
| 684 |
|
---|
| 685 | STATIC_SGI const char *const sgi_sys_types[];
|
---|
| 686 | STATIC_SGI unsigned sgi_get_num_sectors(int i);
|
---|
| 687 | STATIC_SGI int sgi_get_sysid(int i);
|
---|
| 688 | STATIC_SGI void sgi_delete_partition(int i);
|
---|
| 689 | STATIC_SGI void sgi_change_sysid(int i, int sys);
|
---|
| 690 | STATIC_SGI void sgi_list_table(int xtra);
|
---|
| 691 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 692 | STATIC_SGI void sgi_set_xcyl(void);
|
---|
| 693 | #endif
|
---|
| 694 | STATIC_SGI int verify_sgi(int verbose);
|
---|
| 695 | STATIC_SGI void sgi_add_partition(int n, int sys);
|
---|
| 696 | STATIC_SGI void sgi_set_swappartition(int i);
|
---|
| 697 | STATIC_SGI const char *sgi_get_bootfile(void);
|
---|
| 698 | STATIC_SGI void sgi_set_bootfile(const char* aFile);
|
---|
| 699 | STATIC_SGI void create_sgiinfo(void);
|
---|
| 700 | STATIC_SGI void sgi_write_table(void);
|
---|
| 701 | STATIC_SGI void sgi_set_bootpartition(int i);
|
---|
| 702 | #include "fdisk_sgi.c"
|
---|
| 703 |
|
---|
| 704 | STATIC_SUN const char *const sun_sys_types[];
|
---|
| 705 | STATIC_SUN void sun_delete_partition(int i);
|
---|
| 706 | STATIC_SUN void sun_change_sysid(int i, int sys);
|
---|
| 707 | STATIC_SUN void sun_list_table(int xtra);
|
---|
| 708 | STATIC_SUN void add_sun_partition(int n, int sys);
|
---|
| 709 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 710 | STATIC_SUN void sun_set_alt_cyl(void);
|
---|
| 711 | STATIC_SUN void sun_set_ncyl(int cyl);
|
---|
| 712 | STATIC_SUN void sun_set_xcyl(void);
|
---|
| 713 | STATIC_SUN void sun_set_ilfact(void);
|
---|
| 714 | STATIC_SUN void sun_set_rspeed(void);
|
---|
| 715 | STATIC_SUN void sun_set_pcylcount(void);
|
---|
| 716 | #endif
|
---|
| 717 | STATIC_SUN void toggle_sunflags(int i, unsigned char mask);
|
---|
| 718 | STATIC_SUN void verify_sun(void);
|
---|
| 719 | STATIC_SUN void sun_write_table(void);
|
---|
| 720 | #include "fdisk_sun.c"
|
---|
| 721 |
|
---|
| 722 |
|
---|
| 723 | static inline_if_little_endian unsigned
|
---|
| 724 | read4_little_endian(const unsigned char *cp)
|
---|
| 725 | {
|
---|
| 726 | uint32_t v;
|
---|
| 727 | move_from_unaligned32(v, cp);
|
---|
| 728 | return SWAP_LE32(v);
|
---|
| 729 | }
|
---|
| 730 |
|
---|
| 731 | static sector_t
|
---|
| 732 | get_start_sect(const struct partition *p)
|
---|
| 733 | {
|
---|
| 734 | return read4_little_endian(p->start4);
|
---|
| 735 | }
|
---|
| 736 |
|
---|
| 737 | static sector_t
|
---|
| 738 | get_nr_sects(const struct partition *p)
|
---|
| 739 | {
|
---|
| 740 | return read4_little_endian(p->size4);
|
---|
| 741 | }
|
---|
| 742 |
|
---|
| 743 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 744 | /* start_sect and nr_sects are stored little endian on all machines */
|
---|
| 745 | /* moreover, they are not aligned correctly */
|
---|
| 746 | static inline_if_little_endian void
|
---|
| 747 | store4_little_endian(unsigned char *cp, unsigned val)
|
---|
| 748 | {
|
---|
| 749 | uint32_t v = SWAP_LE32(val);
|
---|
| 750 | move_to_unaligned32(cp, v);
|
---|
| 751 | }
|
---|
| 752 |
|
---|
| 753 | static void
|
---|
| 754 | set_start_sect(struct partition *p, unsigned start_sect)
|
---|
| 755 | {
|
---|
| 756 | store4_little_endian(p->start4, start_sect);
|
---|
| 757 | }
|
---|
| 758 |
|
---|
| 759 | static void
|
---|
| 760 | set_nr_sects(struct partition *p, unsigned nr_sects)
|
---|
| 761 | {
|
---|
| 762 | store4_little_endian(p->size4, nr_sects);
|
---|
| 763 | }
|
---|
| 764 | #endif
|
---|
| 765 |
|
---|
| 766 | /* Allocate a buffer and read a partition table sector */
|
---|
| 767 | static void
|
---|
| 768 | read_pte(struct pte *pe, sector_t offset)
|
---|
| 769 | {
|
---|
| 770 | pe->offset_from_dev_start = offset;
|
---|
| 771 | pe->sectorbuffer = xzalloc(sector_size);
|
---|
| 772 | seek_sector(offset);
|
---|
| 773 | /* xread would make us abort - bad for fdisk -l */
|
---|
| 774 | if (full_read(dev_fd, pe->sectorbuffer, sector_size) != sector_size)
|
---|
| 775 | fdisk_fatal(unable_to_read);
|
---|
| 776 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 777 | pe->changed = 0;
|
---|
| 778 | #endif
|
---|
| 779 | pe->part_table = pe->ext_pointer = NULL;
|
---|
| 780 | }
|
---|
| 781 |
|
---|
| 782 | static sector_t
|
---|
| 783 | get_partition_start_from_dev_start(const struct pte *pe)
|
---|
| 784 | {
|
---|
| 785 | return pe->offset_from_dev_start + get_start_sect(pe->part_table);
|
---|
| 786 | }
|
---|
| 787 |
|
---|
| 788 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 789 | /*
|
---|
| 790 | * Avoid warning about DOS partitions when no DOS partition was changed.
|
---|
| 791 | * Here a heuristic "is probably dos partition".
|
---|
| 792 | * We might also do the opposite and warn in all cases except
|
---|
| 793 | * for "is probably nondos partition".
|
---|
| 794 | */
|
---|
| 795 | #ifdef UNUSED
|
---|
| 796 | static int
|
---|
| 797 | is_dos_partition(int t)
|
---|
| 798 | {
|
---|
| 799 | return (t == 1 || t == 4 || t == 6 ||
|
---|
| 800 | t == 0x0b || t == 0x0c || t == 0x0e ||
|
---|
| 801 | t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 ||
|
---|
| 802 | t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 ||
|
---|
| 803 | t == 0xc1 || t == 0xc4 || t == 0xc6);
|
---|
| 804 | }
|
---|
| 805 | #endif
|
---|
| 806 |
|
---|
| 807 | static void
|
---|
| 808 | menu(void)
|
---|
| 809 | {
|
---|
| 810 | puts("Command Action");
|
---|
| 811 | if (LABEL_IS_SUN) {
|
---|
| 812 | puts("a\ttoggle a read only flag"); /* sun */
|
---|
| 813 | puts("b\tedit bsd disklabel");
|
---|
| 814 | puts("c\ttoggle the mountable flag"); /* sun */
|
---|
| 815 | puts("d\tdelete a partition");
|
---|
| 816 | puts("l\tlist known partition types");
|
---|
| 817 | puts("n\tadd a new partition");
|
---|
| 818 | puts("o\tcreate a new empty DOS partition table");
|
---|
| 819 | puts("p\tprint the partition table");
|
---|
| 820 | puts("q\tquit without saving changes");
|
---|
| 821 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
| 822 | puts("t\tchange a partition's system id");
|
---|
| 823 | puts("u\tchange display/entry units");
|
---|
| 824 | puts("v\tverify the partition table");
|
---|
| 825 | puts("w\twrite table to disk and exit");
|
---|
| 826 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 827 | puts("x\textra functionality (experts only)");
|
---|
| 828 | #endif
|
---|
| 829 | } else if (LABEL_IS_SGI) {
|
---|
| 830 | puts("a\tselect bootable partition"); /* sgi flavour */
|
---|
| 831 | puts("b\tedit bootfile entry"); /* sgi */
|
---|
| 832 | puts("c\tselect sgi swap partition"); /* sgi flavour */
|
---|
| 833 | puts("d\tdelete a partition");
|
---|
| 834 | puts("l\tlist known partition types");
|
---|
| 835 | puts("n\tadd a new partition");
|
---|
| 836 | puts("o\tcreate a new empty DOS partition table");
|
---|
| 837 | puts("p\tprint the partition table");
|
---|
| 838 | puts("q\tquit without saving changes");
|
---|
| 839 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
| 840 | puts("t\tchange a partition's system id");
|
---|
| 841 | puts("u\tchange display/entry units");
|
---|
| 842 | puts("v\tverify the partition table");
|
---|
| 843 | puts("w\twrite table to disk and exit");
|
---|
| 844 | } else if (LABEL_IS_AIX) {
|
---|
| 845 | puts("o\tcreate a new empty DOS partition table");
|
---|
| 846 | puts("q\tquit without saving changes");
|
---|
| 847 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
| 848 | } else if (LABEL_IS_GPT) {
|
---|
| 849 | puts("o\tcreate a new empty DOS partition table");
|
---|
| 850 | puts("p\tprint the partition table");
|
---|
| 851 | puts("q\tquit without saving changes");
|
---|
| 852 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
| 853 | } else {
|
---|
| 854 | puts("a\ttoggle a bootable flag");
|
---|
| 855 | puts("b\tedit bsd disklabel");
|
---|
| 856 | puts("c\ttoggle the dos compatibility flag");
|
---|
| 857 | puts("d\tdelete a partition");
|
---|
| 858 | puts("l\tlist known partition types");
|
---|
| 859 | puts("n\tadd a new partition");
|
---|
| 860 | puts("o\tcreate a new empty DOS partition table");
|
---|
| 861 | puts("p\tprint the partition table");
|
---|
| 862 | puts("q\tquit without saving changes");
|
---|
| 863 | puts("s\tcreate a new empty Sun disklabel"); /* sun */
|
---|
| 864 | puts("t\tchange a partition's system id");
|
---|
| 865 | puts("u\tchange display/entry units");
|
---|
| 866 | puts("v\tverify the partition table");
|
---|
| 867 | puts("w\twrite table to disk and exit");
|
---|
| 868 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 869 | puts("x\textra functionality (experts only)");
|
---|
| 870 | #endif
|
---|
| 871 | }
|
---|
| 872 | }
|
---|
| 873 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
| 874 |
|
---|
| 875 |
|
---|
| 876 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 877 | static void
|
---|
| 878 | xmenu(void)
|
---|
| 879 | {
|
---|
| 880 | puts("Command Action");
|
---|
| 881 | if (LABEL_IS_SUN) {
|
---|
| 882 | puts("a\tchange number of alternate cylinders"); /*sun*/
|
---|
| 883 | puts("c\tchange number of cylinders");
|
---|
| 884 | puts("d\tprint the raw data in the partition table");
|
---|
| 885 | puts("e\tchange number of extra sectors per cylinder");/*sun*/
|
---|
| 886 | puts("h\tchange number of heads");
|
---|
| 887 | puts("i\tchange interleave factor"); /*sun*/
|
---|
| 888 | puts("o\tchange rotation speed (rpm)"); /*sun*/
|
---|
| 889 | puts("p\tprint the partition table");
|
---|
| 890 | puts("q\tquit without saving changes");
|
---|
| 891 | puts("r\treturn to main menu");
|
---|
| 892 | puts("s\tchange number of sectors/track");
|
---|
| 893 | puts("v\tverify the partition table");
|
---|
| 894 | puts("w\twrite table to disk and exit");
|
---|
| 895 | puts("y\tchange number of physical cylinders"); /*sun*/
|
---|
| 896 | } else if (LABEL_IS_SGI) {
|
---|
| 897 | puts("b\tmove beginning of data in a partition"); /* !sun */
|
---|
| 898 | puts("c\tchange number of cylinders");
|
---|
| 899 | puts("d\tprint the raw data in the partition table");
|
---|
| 900 | puts("e\tlist extended partitions"); /* !sun */
|
---|
| 901 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */
|
---|
| 902 | puts("h\tchange number of heads");
|
---|
| 903 | puts("p\tprint the partition table");
|
---|
| 904 | puts("q\tquit without saving changes");
|
---|
| 905 | puts("r\treturn to main menu");
|
---|
| 906 | puts("s\tchange number of sectors/track");
|
---|
| 907 | puts("v\tverify the partition table");
|
---|
| 908 | puts("w\twrite table to disk and exit");
|
---|
| 909 | } else if (LABEL_IS_AIX) {
|
---|
| 910 | puts("b\tmove beginning of data in a partition"); /* !sun */
|
---|
| 911 | puts("c\tchange number of cylinders");
|
---|
| 912 | puts("d\tprint the raw data in the partition table");
|
---|
| 913 | puts("e\tlist extended partitions"); /* !sun */
|
---|
| 914 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */
|
---|
| 915 | puts("h\tchange number of heads");
|
---|
| 916 | puts("p\tprint the partition table");
|
---|
| 917 | puts("q\tquit without saving changes");
|
---|
| 918 | puts("r\treturn to main menu");
|
---|
| 919 | puts("s\tchange number of sectors/track");
|
---|
| 920 | puts("v\tverify the partition table");
|
---|
| 921 | puts("w\twrite table to disk and exit");
|
---|
| 922 | } else {
|
---|
| 923 | puts("b\tmove beginning of data in a partition"); /* !sun */
|
---|
| 924 | puts("c\tchange number of cylinders");
|
---|
| 925 | puts("d\tprint the raw data in the partition table");
|
---|
| 926 | puts("e\tlist extended partitions"); /* !sun */
|
---|
| 927 | puts("f\tfix partition order"); /* !sun, !aix, !sgi */
|
---|
| 928 | #if ENABLE_FEATURE_SGI_LABEL
|
---|
| 929 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */
|
---|
| 930 | #endif
|
---|
| 931 | puts("h\tchange number of heads");
|
---|
| 932 | puts("p\tprint the partition table");
|
---|
| 933 | puts("q\tquit without saving changes");
|
---|
| 934 | puts("r\treturn to main menu");
|
---|
| 935 | puts("s\tchange number of sectors/track");
|
---|
| 936 | puts("v\tverify the partition table");
|
---|
| 937 | puts("w\twrite table to disk and exit");
|
---|
| 938 | }
|
---|
| 939 | }
|
---|
| 940 | #endif /* ADVANCED mode */
|
---|
| 941 |
|
---|
| 942 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 943 | static const char *const *
|
---|
| 944 | get_sys_types(void)
|
---|
| 945 | {
|
---|
| 946 | return (
|
---|
| 947 | LABEL_IS_SUN ? sun_sys_types :
|
---|
| 948 | LABEL_IS_SGI ? sgi_sys_types :
|
---|
| 949 | i386_sys_types);
|
---|
| 950 | }
|
---|
| 951 | #else
|
---|
| 952 | #define get_sys_types() i386_sys_types
|
---|
| 953 | #endif
|
---|
| 954 |
|
---|
| 955 | static const char *
|
---|
| 956 | partition_type(unsigned char type)
|
---|
| 957 | {
|
---|
| 958 | int i;
|
---|
| 959 | const char *const *types = get_sys_types();
|
---|
| 960 |
|
---|
| 961 | for (i = 0; types[i]; i++)
|
---|
| 962 | if ((unsigned char)types[i][0] == type)
|
---|
| 963 | return types[i] + 1;
|
---|
| 964 |
|
---|
| 965 | return "Unknown";
|
---|
| 966 | }
|
---|
| 967 |
|
---|
| 968 | static int
|
---|
| 969 | is_cleared_partition(const struct partition *p)
|
---|
| 970 | {
|
---|
| 971 | /* We consider partition "cleared" only if it has only zeros */
|
---|
| 972 | const char *cp = (const char *)p;
|
---|
| 973 | int cnt = sizeof(*p);
|
---|
| 974 | char bits = 0;
|
---|
| 975 | while (--cnt >= 0)
|
---|
| 976 | bits |= *cp++;
|
---|
| 977 | return (bits == 0);
|
---|
| 978 | }
|
---|
| 979 |
|
---|
| 980 | static void
|
---|
| 981 | clear_partition(struct partition *p)
|
---|
| 982 | {
|
---|
| 983 | if (p)
|
---|
| 984 | memset(p, 0, sizeof(*p));
|
---|
| 985 | }
|
---|
| 986 |
|
---|
| 987 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 988 | static int
|
---|
| 989 | get_sysid(int i)
|
---|
| 990 | {
|
---|
| 991 | return LABEL_IS_SUN ? sunlabel->infos[i].id :
|
---|
| 992 | (LABEL_IS_SGI ? sgi_get_sysid(i) :
|
---|
| 993 | ptes[i].part_table->sys_ind);
|
---|
| 994 | }
|
---|
| 995 |
|
---|
| 996 | static void
|
---|
| 997 | list_types(const char *const *sys)
|
---|
| 998 | {
|
---|
| 999 | enum { COLS = 3 };
|
---|
| 1000 |
|
---|
| 1001 | unsigned last[COLS];
|
---|
| 1002 | unsigned done, next, size;
|
---|
| 1003 | int i;
|
---|
| 1004 |
|
---|
| 1005 | for (size = 0; sys[size]; size++)
|
---|
| 1006 | continue;
|
---|
| 1007 |
|
---|
| 1008 | done = 0;
|
---|
| 1009 | for (i = COLS-1; i >= 0; i--) {
|
---|
| 1010 | done += (size + i - done) / (i + 1);
|
---|
| 1011 | last[COLS-1 - i] = done;
|
---|
| 1012 | }
|
---|
| 1013 |
|
---|
| 1014 | i = done = next = 0;
|
---|
| 1015 | do {
|
---|
| 1016 | printf("%c%2x %-22.22s", i ? ' ' : '\n',
|
---|
| 1017 | (unsigned char)sys[next][0],
|
---|
| 1018 | sys[next] + 1);
|
---|
| 1019 | next = last[i++] + done;
|
---|
| 1020 | if (i >= COLS || next >= last[i]) {
|
---|
| 1021 | i = 0;
|
---|
| 1022 | next = ++done;
|
---|
| 1023 | }
|
---|
| 1024 | } while (done < last[0]);
|
---|
| 1025 | bb_putchar('\n');
|
---|
| 1026 | }
|
---|
| 1027 |
|
---|
| 1028 | #define set_hsc(h, s, c, sector) do \
|
---|
| 1029 | { \
|
---|
| 1030 | s = sector % g_sectors + 1; \
|
---|
| 1031 | sector /= g_sectors; \
|
---|
| 1032 | h = sector % g_heads; \
|
---|
| 1033 | sector /= g_heads; \
|
---|
| 1034 | c = sector & 0xff; \
|
---|
| 1035 | s |= (sector >> 2) & 0xc0; \
|
---|
| 1036 | } while (0)
|
---|
| 1037 |
|
---|
| 1038 | static void set_hsc_start_end(struct partition *p, sector_t start, sector_t stop)
|
---|
| 1039 | {
|
---|
| 1040 | if (dos_compatible_flag && (start / (g_sectors * g_heads) > 1023))
|
---|
| 1041 | start = g_heads * g_sectors * 1024 - 1;
|
---|
| 1042 | set_hsc(p->head, p->sector, p->cyl, start);
|
---|
| 1043 |
|
---|
| 1044 | if (dos_compatible_flag && (stop / (g_sectors * g_heads) > 1023))
|
---|
| 1045 | stop = g_heads * g_sectors * 1024 - 1;
|
---|
| 1046 | set_hsc(p->end_head, p->end_sector, p->end_cyl, stop);
|
---|
| 1047 | }
|
---|
| 1048 |
|
---|
| 1049 | static void
|
---|
| 1050 | set_partition(int i, int doext, sector_t start, sector_t stop, int sysid)
|
---|
| 1051 | {
|
---|
| 1052 | struct partition *p;
|
---|
| 1053 | sector_t offset;
|
---|
| 1054 |
|
---|
| 1055 | if (doext) {
|
---|
| 1056 | p = ptes[i].ext_pointer;
|
---|
| 1057 | offset = extended_offset;
|
---|
| 1058 | } else {
|
---|
| 1059 | p = ptes[i].part_table;
|
---|
| 1060 | offset = ptes[i].offset_from_dev_start;
|
---|
| 1061 | }
|
---|
| 1062 | p->boot_ind = 0;
|
---|
| 1063 | p->sys_ind = sysid;
|
---|
| 1064 | set_start_sect(p, start - offset);
|
---|
| 1065 | set_nr_sects(p, stop - start + 1);
|
---|
| 1066 | set_hsc_start_end(p, start, stop);
|
---|
| 1067 | ptes[i].changed = 1;
|
---|
| 1068 | }
|
---|
| 1069 | #endif
|
---|
| 1070 |
|
---|
| 1071 | static int
|
---|
| 1072 | warn_geometry(void)
|
---|
| 1073 | {
|
---|
| 1074 | if (g_heads && g_sectors && g_cylinders)
|
---|
| 1075 | return 0;
|
---|
| 1076 |
|
---|
| 1077 | printf("Unknown value(s) for:");
|
---|
| 1078 | if (!g_heads)
|
---|
| 1079 | printf(" heads");
|
---|
| 1080 | if (!g_sectors)
|
---|
| 1081 | printf(" sectors");
|
---|
| 1082 | if (!g_cylinders)
|
---|
| 1083 | printf(" cylinders");
|
---|
| 1084 | printf(
|
---|
| 1085 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1086 | " (settable in the extra functions menu)"
|
---|
| 1087 | #endif
|
---|
| 1088 | "\n");
|
---|
| 1089 | return 1;
|
---|
| 1090 | }
|
---|
| 1091 |
|
---|
| 1092 | static void
|
---|
| 1093 | update_units(void)
|
---|
| 1094 | {
|
---|
| 1095 | int cyl_units = g_heads * g_sectors;
|
---|
| 1096 |
|
---|
| 1097 | if (display_in_cyl_units && cyl_units)
|
---|
| 1098 | units_per_sector = cyl_units;
|
---|
| 1099 | else
|
---|
| 1100 | units_per_sector = 1; /* in sectors */
|
---|
| 1101 | }
|
---|
| 1102 |
|
---|
| 1103 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1104 | static void
|
---|
| 1105 | warn_cylinders(void)
|
---|
| 1106 | {
|
---|
| 1107 | if (LABEL_IS_DOS && g_cylinders > 1024 && !nowarn)
|
---|
| 1108 | printf("\n"
|
---|
| 1109 | "The number of cylinders for this disk is set to %u.\n"
|
---|
| 1110 | "There is nothing wrong with that, but this is larger than 1024,\n"
|
---|
| 1111 | "and could in certain setups cause problems with:\n"
|
---|
| 1112 | "1) software that runs at boot time (e.g., old versions of LILO)\n"
|
---|
| 1113 | "2) booting and partitioning software from other OSs\n"
|
---|
| 1114 | " (e.g., DOS FDISK, OS/2 FDISK)\n",
|
---|
| 1115 | g_cylinders);
|
---|
| 1116 | }
|
---|
| 1117 | #endif
|
---|
| 1118 |
|
---|
| 1119 | static void
|
---|
| 1120 | read_extended(int ext)
|
---|
| 1121 | {
|
---|
| 1122 | int i;
|
---|
| 1123 | struct pte *pex;
|
---|
| 1124 | struct partition *p, *q;
|
---|
| 1125 |
|
---|
| 1126 | ext_index = ext;
|
---|
| 1127 | pex = &ptes[ext];
|
---|
| 1128 | pex->ext_pointer = pex->part_table;
|
---|
| 1129 |
|
---|
| 1130 | p = pex->part_table;
|
---|
| 1131 | if (!get_start_sect(p)) {
|
---|
| 1132 | printf("Bad offset in primary extended partition\n");
|
---|
| 1133 | return;
|
---|
| 1134 | }
|
---|
| 1135 |
|
---|
| 1136 | while (IS_EXTENDED(p->sys_ind)) {
|
---|
| 1137 | struct pte *pe = &ptes[g_partitions];
|
---|
| 1138 |
|
---|
| 1139 | if (g_partitions >= MAXIMUM_PARTS) {
|
---|
| 1140 | /* This is not a Linux restriction, but
|
---|
| 1141 | this program uses arrays of size MAXIMUM_PARTS.
|
---|
| 1142 | Do not try to 'improve' this test. */
|
---|
| 1143 | struct pte *pre = &ptes[g_partitions - 1];
|
---|
| 1144 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1145 | printf("Warning: deleting partitions after %u\n",
|
---|
| 1146 | g_partitions);
|
---|
| 1147 | pre->changed = 1;
|
---|
| 1148 | #endif
|
---|
| 1149 | clear_partition(pre->ext_pointer);
|
---|
| 1150 | return;
|
---|
| 1151 | }
|
---|
| 1152 |
|
---|
| 1153 | read_pte(pe, extended_offset + get_start_sect(p));
|
---|
| 1154 |
|
---|
| 1155 | if (!extended_offset)
|
---|
| 1156 | extended_offset = get_start_sect(p);
|
---|
| 1157 |
|
---|
| 1158 | q = p = pt_offset(pe->sectorbuffer, 0);
|
---|
| 1159 | for (i = 0; i < 4; i++, p++) if (get_nr_sects(p)) {
|
---|
| 1160 | if (IS_EXTENDED(p->sys_ind)) {
|
---|
| 1161 | if (pe->ext_pointer)
|
---|
| 1162 | printf("Warning: extra link "
|
---|
| 1163 | "pointer in partition table"
|
---|
| 1164 | " %u\n", g_partitions + 1);
|
---|
| 1165 | else
|
---|
| 1166 | pe->ext_pointer = p;
|
---|
| 1167 | } else if (p->sys_ind) {
|
---|
| 1168 | if (pe->part_table)
|
---|
| 1169 | printf("Warning: ignoring extra "
|
---|
| 1170 | "data in partition table"
|
---|
| 1171 | " %u\n", g_partitions + 1);
|
---|
| 1172 | else
|
---|
| 1173 | pe->part_table = p;
|
---|
| 1174 | }
|
---|
| 1175 | }
|
---|
| 1176 |
|
---|
| 1177 | /* very strange code here... */
|
---|
| 1178 | if (!pe->part_table) {
|
---|
| 1179 | if (q != pe->ext_pointer)
|
---|
| 1180 | pe->part_table = q;
|
---|
| 1181 | else
|
---|
| 1182 | pe->part_table = q + 1;
|
---|
| 1183 | }
|
---|
| 1184 | if (!pe->ext_pointer) {
|
---|
| 1185 | if (q != pe->part_table)
|
---|
| 1186 | pe->ext_pointer = q;
|
---|
| 1187 | else
|
---|
| 1188 | pe->ext_pointer = q + 1;
|
---|
| 1189 | }
|
---|
| 1190 |
|
---|
| 1191 | p = pe->ext_pointer;
|
---|
| 1192 | g_partitions++;
|
---|
| 1193 | }
|
---|
| 1194 |
|
---|
| 1195 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1196 | /* remove empty links */
|
---|
| 1197 | remove:
|
---|
| 1198 | for (i = 4; i < g_partitions; i++) {
|
---|
| 1199 | struct pte *pe = &ptes[i];
|
---|
| 1200 |
|
---|
| 1201 | if (!get_nr_sects(pe->part_table)
|
---|
| 1202 | && (g_partitions > 5 || ptes[4].part_table->sys_ind)
|
---|
| 1203 | ) {
|
---|
| 1204 | printf("Omitting empty partition (%u)\n", i+1);
|
---|
| 1205 | delete_partition(i);
|
---|
| 1206 | goto remove; /* numbering changed */
|
---|
| 1207 | }
|
---|
| 1208 | }
|
---|
| 1209 | #endif
|
---|
| 1210 | }
|
---|
| 1211 |
|
---|
| 1212 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1213 | static void
|
---|
| 1214 | create_doslabel(void)
|
---|
| 1215 | {
|
---|
| 1216 | printf(msg_building_new_label, "DOS disklabel");
|
---|
| 1217 |
|
---|
| 1218 | current_label_type = LABEL_DOS;
|
---|
| 1219 | #if ENABLE_FEATURE_OSF_LABEL
|
---|
| 1220 | possibly_osf_label = 0;
|
---|
| 1221 | #endif
|
---|
| 1222 | g_partitions = 4;
|
---|
| 1223 |
|
---|
| 1224 | memset(&MBRbuffer[510 - 4*16], 0, 4*16);
|
---|
| 1225 | write_part_table_flag(MBRbuffer);
|
---|
| 1226 | extended_offset = 0;
|
---|
| 1227 | set_all_unchanged();
|
---|
| 1228 | set_changed(0);
|
---|
| 1229 | get_boot(CREATE_EMPTY_DOS);
|
---|
| 1230 | }
|
---|
| 1231 | #endif
|
---|
| 1232 |
|
---|
| 1233 | static void
|
---|
| 1234 | get_sectorsize(void)
|
---|
| 1235 | {
|
---|
| 1236 | if (!user_set_sector_size) {
|
---|
| 1237 | int arg;
|
---|
| 1238 | if (ioctl(dev_fd, BLKSSZGET, &arg) == 0)
|
---|
| 1239 | sector_size = arg;
|
---|
| 1240 | if (sector_size != DEFAULT_SECTOR_SIZE)
|
---|
| 1241 | printf("Note: sector size is %u "
|
---|
| 1242 | "(not " DEFAULT_SECTOR_SIZE_STR ")\n",
|
---|
| 1243 | sector_size);
|
---|
| 1244 | }
|
---|
| 1245 | }
|
---|
| 1246 |
|
---|
| 1247 | static void
|
---|
| 1248 | get_kernel_geometry(void)
|
---|
| 1249 | {
|
---|
| 1250 | struct hd_geometry geometry;
|
---|
| 1251 |
|
---|
| 1252 | if (!ioctl(dev_fd, HDIO_GETGEO, &geometry)) {
|
---|
| 1253 | kern_heads = geometry.heads;
|
---|
| 1254 | kern_sectors = geometry.sectors;
|
---|
| 1255 | /* never use geometry.cylinders - it is truncated */
|
---|
| 1256 | }
|
---|
| 1257 | }
|
---|
| 1258 |
|
---|
| 1259 | static void
|
---|
| 1260 | get_partition_table_geometry(void)
|
---|
| 1261 | {
|
---|
| 1262 | const unsigned char *bufp = (const unsigned char *)MBRbuffer;
|
---|
| 1263 | struct partition *p;
|
---|
| 1264 | int i, h, s, hh, ss;
|
---|
| 1265 | int first = 1;
|
---|
| 1266 | int bad = 0;
|
---|
| 1267 |
|
---|
| 1268 | if (!(valid_part_table_flag((char*)bufp)))
|
---|
| 1269 | return;
|
---|
| 1270 |
|
---|
| 1271 | hh = ss = 0;
|
---|
| 1272 | for (i = 0; i < 4; i++) {
|
---|
| 1273 | p = pt_offset(bufp, i);
|
---|
| 1274 | if (p->sys_ind != 0) {
|
---|
| 1275 | h = p->end_head + 1;
|
---|
| 1276 | s = (p->end_sector & 077);
|
---|
| 1277 | if (first) {
|
---|
| 1278 | hh = h;
|
---|
| 1279 | ss = s;
|
---|
| 1280 | first = 0;
|
---|
| 1281 | } else if (hh != h || ss != s)
|
---|
| 1282 | bad = 1;
|
---|
| 1283 | }
|
---|
| 1284 | }
|
---|
| 1285 |
|
---|
| 1286 | if (!first && !bad) {
|
---|
| 1287 | pt_heads = hh;
|
---|
| 1288 | pt_sectors = ss;
|
---|
| 1289 | }
|
---|
| 1290 | }
|
---|
| 1291 |
|
---|
| 1292 | static void
|
---|
| 1293 | get_geometry(void)
|
---|
| 1294 | {
|
---|
| 1295 | int sec_fac;
|
---|
| 1296 |
|
---|
| 1297 | get_sectorsize();
|
---|
| 1298 | sec_fac = sector_size / 512;
|
---|
| 1299 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
| 1300 | guess_device_type();
|
---|
| 1301 | #endif
|
---|
| 1302 | g_heads = g_cylinders = g_sectors = 0;
|
---|
| 1303 | kern_heads = kern_sectors = 0;
|
---|
| 1304 | pt_heads = pt_sectors = 0;
|
---|
| 1305 |
|
---|
| 1306 | get_kernel_geometry();
|
---|
| 1307 | get_partition_table_geometry();
|
---|
| 1308 |
|
---|
| 1309 | g_heads = user_heads ? user_heads :
|
---|
| 1310 | pt_heads ? pt_heads :
|
---|
| 1311 | kern_heads ? kern_heads : 255;
|
---|
| 1312 | g_sectors = user_sectors ? user_sectors :
|
---|
| 1313 | pt_sectors ? pt_sectors :
|
---|
| 1314 | kern_sectors ? kern_sectors : 63;
|
---|
| 1315 | total_number_of_sectors = bb_BLKGETSIZE_sectors(dev_fd);
|
---|
| 1316 |
|
---|
| 1317 | sector_offset = 1;
|
---|
| 1318 | if (dos_compatible_flag)
|
---|
| 1319 | sector_offset = g_sectors;
|
---|
| 1320 |
|
---|
| 1321 | g_cylinders = total_number_of_sectors / (g_heads * g_sectors * sec_fac);
|
---|
| 1322 | if (!g_cylinders)
|
---|
| 1323 | g_cylinders = user_cylinders;
|
---|
| 1324 | }
|
---|
| 1325 |
|
---|
| 1326 | /*
|
---|
| 1327 | * Opens disk_device and optionally reads MBR.
|
---|
| 1328 | * If what == OPEN_MAIN:
|
---|
| 1329 | * Open device, read MBR. Abort program on short read. Create empty
|
---|
| 1330 | * disklabel if the on-disk structure is invalid (WRITABLE mode).
|
---|
| 1331 | * If what == TRY_ONLY:
|
---|
| 1332 | * Open device, read MBR. Return an error if anything is out of place.
|
---|
| 1333 | * Do not create an empty disklabel. This is used for the "list"
|
---|
| 1334 | * operations: "fdisk -l /dev/sda" and "fdisk -l" (all devices).
|
---|
| 1335 | * If what == CREATE_EMPTY_*:
|
---|
| 1336 | * This means that get_boot() was called recursively from create_*label().
|
---|
| 1337 | * Do not re-open the device; just set up the ptes array and print
|
---|
| 1338 | * geometry warnings.
|
---|
| 1339 | *
|
---|
| 1340 | * Returns:
|
---|
| 1341 | * -1: no 0xaa55 flag present (possibly entire disk BSD)
|
---|
| 1342 | * 0: found or created label
|
---|
| 1343 | * 1: I/O error
|
---|
| 1344 | */
|
---|
| 1345 | #if ENABLE_FEATURE_SUN_LABEL || ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1346 | static int get_boot(enum action what)
|
---|
| 1347 | #else
|
---|
| 1348 | static int get_boot(void)
|
---|
| 1349 | #define get_boot(what) get_boot()
|
---|
| 1350 | #endif
|
---|
| 1351 | {
|
---|
| 1352 | int i, fd;
|
---|
| 1353 |
|
---|
| 1354 | g_partitions = 4;
|
---|
| 1355 | for (i = 0; i < 4; i++) {
|
---|
| 1356 | struct pte *pe = &ptes[i];
|
---|
| 1357 | pe->part_table = pt_offset(MBRbuffer, i);
|
---|
| 1358 | pe->ext_pointer = NULL;
|
---|
| 1359 | pe->offset_from_dev_start = 0;
|
---|
| 1360 | pe->sectorbuffer = MBRbuffer;
|
---|
| 1361 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1362 | pe->changed = (what == CREATE_EMPTY_DOS);
|
---|
| 1363 | #endif
|
---|
| 1364 | }
|
---|
| 1365 |
|
---|
| 1366 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1367 | // ALERT! highly idiotic design!
|
---|
| 1368 | // We end up here when we call get_boot() recursively
|
---|
| 1369 | // via get_boot() [table is bad] -> create_doslabel() -> get_boot(CREATE_EMPTY_DOS).
|
---|
| 1370 | // or get_boot() [table is bad] -> create_sunlabel() -> get_boot(CREATE_EMPTY_SUN).
|
---|
| 1371 | // (just factor out re-init of ptes[0,1,2,3] in a separate fn instead?)
|
---|
| 1372 | // So skip opening device _again_...
|
---|
| 1373 | if (what == CREATE_EMPTY_DOS IF_FEATURE_SUN_LABEL(|| what == CREATE_EMPTY_SUN))
|
---|
| 1374 | goto created_table;
|
---|
| 1375 |
|
---|
| 1376 | fd = open(disk_device, (option_mask32 & OPT_l) ? O_RDONLY : O_RDWR);
|
---|
| 1377 |
|
---|
| 1378 | if (fd < 0) {
|
---|
| 1379 | fd = open(disk_device, O_RDONLY);
|
---|
| 1380 | if (fd < 0) {
|
---|
| 1381 | if (what == TRY_ONLY)
|
---|
| 1382 | return 1;
|
---|
| 1383 | fdisk_fatal(unable_to_open);
|
---|
| 1384 | }
|
---|
| 1385 | printf("'%s' is opened for read only\n", disk_device);
|
---|
| 1386 | }
|
---|
| 1387 | xmove_fd(fd, dev_fd);
|
---|
| 1388 | if (512 != full_read(dev_fd, MBRbuffer, 512)) {
|
---|
| 1389 | if (what == TRY_ONLY) {
|
---|
| 1390 | close_dev_fd();
|
---|
| 1391 | return 1;
|
---|
| 1392 | }
|
---|
| 1393 | fdisk_fatal(unable_to_read);
|
---|
| 1394 | }
|
---|
| 1395 | #else
|
---|
| 1396 | fd = open(disk_device, O_RDONLY);
|
---|
| 1397 | if (fd < 0)
|
---|
| 1398 | return 1;
|
---|
| 1399 | if (512 != full_read(fd, MBRbuffer, 512)) {
|
---|
| 1400 | close(fd);
|
---|
| 1401 | return 1;
|
---|
| 1402 | }
|
---|
| 1403 | xmove_fd(fd, dev_fd);
|
---|
| 1404 | #endif
|
---|
| 1405 |
|
---|
| 1406 | get_geometry();
|
---|
| 1407 | update_units();
|
---|
| 1408 |
|
---|
| 1409 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
| 1410 | if (check_sun_label())
|
---|
| 1411 | return 0;
|
---|
| 1412 | #endif
|
---|
| 1413 | #if ENABLE_FEATURE_SGI_LABEL
|
---|
| 1414 | if (check_sgi_label())
|
---|
| 1415 | return 0;
|
---|
| 1416 | #endif
|
---|
| 1417 | #if ENABLE_FEATURE_AIX_LABEL
|
---|
| 1418 | if (check_aix_label())
|
---|
| 1419 | return 0;
|
---|
| 1420 | #endif
|
---|
| 1421 | #if ENABLE_FEATURE_GPT_LABEL
|
---|
| 1422 | if (check_gpt_label())
|
---|
| 1423 | return 0;
|
---|
| 1424 | #endif
|
---|
| 1425 | #if ENABLE_FEATURE_OSF_LABEL
|
---|
| 1426 | if (check_osf_label()) {
|
---|
| 1427 | possibly_osf_label = 1;
|
---|
| 1428 | if (!valid_part_table_flag(MBRbuffer)) {
|
---|
| 1429 | current_label_type = LABEL_OSF;
|
---|
| 1430 | return 0;
|
---|
| 1431 | }
|
---|
| 1432 | printf("This disk has both DOS and BSD magic.\n"
|
---|
| 1433 | "Give the 'b' command to go to BSD mode.\n");
|
---|
| 1434 | }
|
---|
| 1435 | #endif
|
---|
| 1436 |
|
---|
| 1437 | #if !ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1438 | if (!valid_part_table_flag(MBRbuffer))
|
---|
| 1439 | return -1;
|
---|
| 1440 | #else
|
---|
| 1441 | if (!valid_part_table_flag(MBRbuffer)) {
|
---|
| 1442 | if (what == OPEN_MAIN) {
|
---|
| 1443 | printf("Device contains neither a valid DOS "
|
---|
| 1444 | "partition table, nor Sun, SGI, OSF or GPT "
|
---|
| 1445 | "disklabel\n");
|
---|
| 1446 | #ifdef __sparc__
|
---|
| 1447 | IF_FEATURE_SUN_LABEL(create_sunlabel();)
|
---|
| 1448 | #else
|
---|
| 1449 | create_doslabel();
|
---|
| 1450 | #endif
|
---|
| 1451 | return 0;
|
---|
| 1452 | }
|
---|
| 1453 | /* TRY_ONLY: */
|
---|
| 1454 | return -1;
|
---|
| 1455 | }
|
---|
| 1456 | created_table:
|
---|
| 1457 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
| 1458 |
|
---|
| 1459 |
|
---|
| 1460 | IF_FEATURE_FDISK_WRITABLE(warn_cylinders();)
|
---|
| 1461 | warn_geometry();
|
---|
| 1462 |
|
---|
| 1463 | for (i = 0; i < 4; i++) {
|
---|
| 1464 | if (IS_EXTENDED(ptes[i].part_table->sys_ind)) {
|
---|
| 1465 | if (g_partitions != 4)
|
---|
| 1466 | printf("Ignoring extra extended "
|
---|
| 1467 | "partition %u\n", i + 1);
|
---|
| 1468 | else
|
---|
| 1469 | read_extended(i);
|
---|
| 1470 | }
|
---|
| 1471 | }
|
---|
| 1472 |
|
---|
| 1473 | for (i = 3; i < g_partitions; i++) {
|
---|
| 1474 | struct pte *pe = &ptes[i];
|
---|
| 1475 | if (!valid_part_table_flag(pe->sectorbuffer)) {
|
---|
| 1476 | printf("Warning: invalid flag 0x%02x,0x%02x of partition "
|
---|
| 1477 | "table %u will be corrected by w(rite)\n",
|
---|
| 1478 | pe->sectorbuffer[510],
|
---|
| 1479 | pe->sectorbuffer[511],
|
---|
| 1480 | i + 1);
|
---|
| 1481 | IF_FEATURE_FDISK_WRITABLE(pe->changed = 1;)
|
---|
| 1482 | }
|
---|
| 1483 | }
|
---|
| 1484 |
|
---|
| 1485 | return 0;
|
---|
| 1486 | }
|
---|
| 1487 |
|
---|
| 1488 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 1489 | /*
|
---|
| 1490 | * Print the message MESG, then read an integer between LOW and HIGH (inclusive).
|
---|
| 1491 | * If the user hits Enter, DFLT is returned.
|
---|
| 1492 | * Answers like +10 are interpreted as offsets from BASE.
|
---|
| 1493 | *
|
---|
| 1494 | * There is no default if DFLT is not between LOW and HIGH.
|
---|
| 1495 | */
|
---|
| 1496 | static sector_t
|
---|
| 1497 | read_int(sector_t low, sector_t dflt, sector_t high, sector_t base, const char *mesg)
|
---|
| 1498 | {
|
---|
| 1499 | sector_t value;
|
---|
| 1500 | int default_ok = 1;
|
---|
| 1501 | const char *fmt = "%s (%u-%u, default %u): ";
|
---|
| 1502 |
|
---|
| 1503 | if (dflt < low || dflt > high) {
|
---|
| 1504 | fmt = "%s (%u-%u): ";
|
---|
| 1505 | default_ok = 0;
|
---|
| 1506 | }
|
---|
| 1507 |
|
---|
| 1508 | while (1) {
|
---|
| 1509 | int use_default = default_ok;
|
---|
| 1510 |
|
---|
| 1511 | /* ask question and read answer */
|
---|
| 1512 | do {
|
---|
| 1513 | printf(fmt, mesg, low, high, dflt);
|
---|
| 1514 | read_maybe_empty("");
|
---|
| 1515 | } while (*line_ptr != '\n' && !isdigit(*line_ptr)
|
---|
| 1516 | && *line_ptr != '-' && *line_ptr != '+');
|
---|
| 1517 |
|
---|
| 1518 | if (*line_ptr == '+' || *line_ptr == '-') {
|
---|
| 1519 | int minus = (*line_ptr == '-');
|
---|
| 1520 | int absolute = 0;
|
---|
| 1521 |
|
---|
| 1522 | value = atoi(line_ptr + 1);
|
---|
| 1523 |
|
---|
| 1524 | /* (1) if 2nd char is digit, use_default = 0.
|
---|
| 1525 | * (2) move line_ptr to first non-digit. */
|
---|
| 1526 | while (isdigit(*++line_ptr))
|
---|
| 1527 | use_default = 0;
|
---|
| 1528 |
|
---|
| 1529 | switch (*line_ptr) {
|
---|
| 1530 | case 'c':
|
---|
| 1531 | case 'C':
|
---|
| 1532 | if (!display_in_cyl_units)
|
---|
| 1533 | value *= g_heads * g_sectors;
|
---|
| 1534 | break;
|
---|
| 1535 | case 'K':
|
---|
| 1536 | absolute = 1024;
|
---|
| 1537 | break;
|
---|
| 1538 | case 'k':
|
---|
| 1539 | absolute = 1000;
|
---|
| 1540 | break;
|
---|
| 1541 | case 'm':
|
---|
| 1542 | case 'M':
|
---|
| 1543 | absolute = 1000000;
|
---|
| 1544 | break;
|
---|
| 1545 | case 'g':
|
---|
| 1546 | case 'G':
|
---|
| 1547 | absolute = 1000000000;
|
---|
| 1548 | break;
|
---|
| 1549 | default:
|
---|
| 1550 | break;
|
---|
| 1551 | }
|
---|
| 1552 | if (absolute) {
|
---|
| 1553 | ullong bytes;
|
---|
| 1554 | unsigned long unit;
|
---|
| 1555 |
|
---|
| 1556 | bytes = (ullong) value * absolute;
|
---|
| 1557 | unit = sector_size * units_per_sector;
|
---|
| 1558 | bytes += unit/2; /* round */
|
---|
| 1559 | bytes /= unit;
|
---|
| 1560 | value = bytes;
|
---|
| 1561 | }
|
---|
| 1562 | if (minus)
|
---|
| 1563 | value = -value;
|
---|
| 1564 | value += base;
|
---|
| 1565 | } else {
|
---|
| 1566 | value = atoi(line_ptr);
|
---|
| 1567 | while (isdigit(*line_ptr)) {
|
---|
| 1568 | line_ptr++;
|
---|
| 1569 | use_default = 0;
|
---|
| 1570 | }
|
---|
| 1571 | }
|
---|
| 1572 | if (use_default) {
|
---|
| 1573 | value = dflt;
|
---|
| 1574 | printf("Using default value %u\n", value);
|
---|
| 1575 | }
|
---|
| 1576 | if (value >= low && value <= high)
|
---|
| 1577 | break;
|
---|
| 1578 | printf("Value is out of range\n");
|
---|
| 1579 | }
|
---|
| 1580 | return value;
|
---|
| 1581 | }
|
---|
| 1582 |
|
---|
| 1583 | static unsigned
|
---|
| 1584 | get_partition(int warn, unsigned max)
|
---|
| 1585 | {
|
---|
| 1586 | struct pte *pe;
|
---|
| 1587 | unsigned i;
|
---|
| 1588 |
|
---|
| 1589 | i = read_int(1, 0, max, 0, "Partition number") - 1;
|
---|
| 1590 | pe = &ptes[i];
|
---|
| 1591 |
|
---|
| 1592 | if (warn) {
|
---|
| 1593 | if ((!LABEL_IS_SUN && !LABEL_IS_SGI && !pe->part_table->sys_ind)
|
---|
| 1594 | || (LABEL_IS_SUN && (!sunlabel->partitions[i].num_sectors || !sunlabel->infos[i].id))
|
---|
| 1595 | || (LABEL_IS_SGI && !sgi_get_num_sectors(i))
|
---|
| 1596 | ) {
|
---|
| 1597 | printf("Warning: partition %u has empty type\n", i+1);
|
---|
| 1598 | }
|
---|
| 1599 | }
|
---|
| 1600 | return i;
|
---|
| 1601 | }
|
---|
| 1602 |
|
---|
| 1603 | static int
|
---|
| 1604 | get_existing_partition(int warn, unsigned max)
|
---|
| 1605 | {
|
---|
| 1606 | int pno = -1;
|
---|
| 1607 | unsigned i;
|
---|
| 1608 |
|
---|
| 1609 | for (i = 0; i < max; i++) {
|
---|
| 1610 | struct pte *pe = &ptes[i];
|
---|
| 1611 | struct partition *p = pe->part_table;
|
---|
| 1612 |
|
---|
| 1613 | if (p && !is_cleared_partition(p)) {
|
---|
| 1614 | if (pno >= 0)
|
---|
| 1615 | goto not_unique;
|
---|
| 1616 | pno = i;
|
---|
| 1617 | }
|
---|
| 1618 | }
|
---|
| 1619 | if (pno >= 0) {
|
---|
| 1620 | printf("Selected partition %u\n", pno+1);
|
---|
| 1621 | return pno;
|
---|
| 1622 | }
|
---|
| 1623 | printf("No partition is defined yet!\n");
|
---|
| 1624 | return -1;
|
---|
| 1625 |
|
---|
| 1626 | not_unique:
|
---|
| 1627 | return get_partition(warn, max);
|
---|
| 1628 | }
|
---|
| 1629 |
|
---|
| 1630 | static int
|
---|
| 1631 | get_nonexisting_partition(int warn, unsigned max)
|
---|
| 1632 | {
|
---|
| 1633 | int pno = -1;
|
---|
| 1634 | unsigned i;
|
---|
| 1635 |
|
---|
| 1636 | for (i = 0; i < max; i++) {
|
---|
| 1637 | struct pte *pe = &ptes[i];
|
---|
| 1638 | struct partition *p = pe->part_table;
|
---|
| 1639 |
|
---|
| 1640 | if (p && is_cleared_partition(p)) {
|
---|
| 1641 | if (pno >= 0)
|
---|
| 1642 | goto not_unique;
|
---|
| 1643 | pno = i;
|
---|
| 1644 | }
|
---|
| 1645 | }
|
---|
| 1646 | if (pno >= 0) {
|
---|
| 1647 | printf("Selected partition %u\n", pno+1);
|
---|
| 1648 | return pno;
|
---|
| 1649 | }
|
---|
| 1650 | printf("All primary partitions have been defined already!\n");
|
---|
| 1651 | return -1;
|
---|
| 1652 |
|
---|
| 1653 | not_unique:
|
---|
| 1654 | return get_partition(warn, max);
|
---|
| 1655 | }
|
---|
| 1656 |
|
---|
| 1657 |
|
---|
| 1658 | static void
|
---|
| 1659 | change_units(void)
|
---|
| 1660 | {
|
---|
| 1661 | display_in_cyl_units = !display_in_cyl_units;
|
---|
| 1662 | update_units();
|
---|
| 1663 | printf("Changing display/entry units to %s\n",
|
---|
| 1664 | str_units(PLURAL));
|
---|
| 1665 | }
|
---|
| 1666 |
|
---|
| 1667 | static void
|
---|
| 1668 | toggle_active(int i)
|
---|
| 1669 | {
|
---|
| 1670 | struct pte *pe = &ptes[i];
|
---|
| 1671 | struct partition *p = pe->part_table;
|
---|
| 1672 |
|
---|
| 1673 | if (IS_EXTENDED(p->sys_ind) && !p->boot_ind)
|
---|
| 1674 | printf("WARNING: Partition %u is an extended partition\n", i + 1);
|
---|
| 1675 | p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG);
|
---|
| 1676 | pe->changed = 1;
|
---|
| 1677 | }
|
---|
| 1678 |
|
---|
| 1679 | static void
|
---|
| 1680 | toggle_dos_compatibility_flag(void)
|
---|
| 1681 | {
|
---|
| 1682 | dos_compatible_flag = 1 - dos_compatible_flag;
|
---|
| 1683 | if (dos_compatible_flag) {
|
---|
| 1684 | sector_offset = g_sectors;
|
---|
| 1685 | printf("DOS Compatibility flag is set\n");
|
---|
| 1686 | } else {
|
---|
| 1687 | sector_offset = 1;
|
---|
| 1688 | printf("DOS Compatibility flag is not set\n");
|
---|
| 1689 | }
|
---|
| 1690 | }
|
---|
| 1691 |
|
---|
| 1692 | static void
|
---|
| 1693 | delete_partition(int i)
|
---|
| 1694 | {
|
---|
| 1695 | struct pte *pe = &ptes[i];
|
---|
| 1696 | struct partition *p = pe->part_table;
|
---|
| 1697 | struct partition *q = pe->ext_pointer;
|
---|
| 1698 |
|
---|
| 1699 | /* Note that for the fifth partition (i == 4) we don't actually
|
---|
| 1700 | * decrement partitions.
|
---|
| 1701 | */
|
---|
| 1702 |
|
---|
| 1703 | if (warn_geometry())
|
---|
| 1704 | return; /* C/H/S not set */
|
---|
| 1705 | pe->changed = 1;
|
---|
| 1706 |
|
---|
| 1707 | if (LABEL_IS_SUN) {
|
---|
| 1708 | sun_delete_partition(i);
|
---|
| 1709 | return;
|
---|
| 1710 | }
|
---|
| 1711 | if (LABEL_IS_SGI) {
|
---|
| 1712 | sgi_delete_partition(i);
|
---|
| 1713 | return;
|
---|
| 1714 | }
|
---|
| 1715 |
|
---|
| 1716 | if (i < 4) {
|
---|
| 1717 | if (IS_EXTENDED(p->sys_ind) && i == ext_index) {
|
---|
| 1718 | g_partitions = 4;
|
---|
| 1719 | ptes[ext_index].ext_pointer = NULL;
|
---|
| 1720 | extended_offset = 0;
|
---|
| 1721 | }
|
---|
| 1722 | clear_partition(p);
|
---|
| 1723 | return;
|
---|
| 1724 | }
|
---|
| 1725 |
|
---|
| 1726 | if (!q->sys_ind && i > 4) {
|
---|
| 1727 | /* the last one in the chain - just delete */
|
---|
| 1728 | --g_partitions;
|
---|
| 1729 | --i;
|
---|
| 1730 | clear_partition(ptes[i].ext_pointer);
|
---|
| 1731 | ptes[i].changed = 1;
|
---|
| 1732 | } else {
|
---|
| 1733 | /* not the last one - further ones will be moved down */
|
---|
| 1734 | if (i > 4) {
|
---|
| 1735 | /* delete this link in the chain */
|
---|
| 1736 | p = ptes[i-1].ext_pointer;
|
---|
| 1737 | *p = *q;
|
---|
| 1738 | set_start_sect(p, get_start_sect(q));
|
---|
| 1739 | set_nr_sects(p, get_nr_sects(q));
|
---|
| 1740 | ptes[i-1].changed = 1;
|
---|
| 1741 | } else if (g_partitions > 5) { /* 5 will be moved to 4 */
|
---|
| 1742 | /* the first logical in a longer chain */
|
---|
| 1743 | pe = &ptes[5];
|
---|
| 1744 |
|
---|
| 1745 | if (pe->part_table) /* prevent SEGFAULT */
|
---|
| 1746 | set_start_sect(pe->part_table,
|
---|
| 1747 | get_partition_start_from_dev_start(pe) -
|
---|
| 1748 | extended_offset);
|
---|
| 1749 | pe->offset_from_dev_start = extended_offset;
|
---|
| 1750 | pe->changed = 1;
|
---|
| 1751 | }
|
---|
| 1752 |
|
---|
| 1753 | if (g_partitions > 5) {
|
---|
| 1754 | g_partitions--;
|
---|
| 1755 | while (i < g_partitions) {
|
---|
| 1756 | ptes[i] = ptes[i+1];
|
---|
| 1757 | i++;
|
---|
| 1758 | }
|
---|
| 1759 | } else {
|
---|
| 1760 | /* the only logical: clear only */
|
---|
| 1761 | clear_partition(ptes[i].part_table);
|
---|
| 1762 | }
|
---|
| 1763 | }
|
---|
| 1764 | }
|
---|
| 1765 |
|
---|
| 1766 | static void
|
---|
| 1767 | change_sysid(void)
|
---|
| 1768 | {
|
---|
| 1769 | int i, sys, origsys;
|
---|
| 1770 | struct partition *p;
|
---|
| 1771 |
|
---|
| 1772 | /* If sgi_label then don't use get_existing_partition,
|
---|
| 1773 | let the user select a partition, since get_existing_partition()
|
---|
| 1774 | only works for Linux like partition tables. */
|
---|
| 1775 | if (!LABEL_IS_SGI) {
|
---|
| 1776 | i = get_existing_partition(0, g_partitions);
|
---|
| 1777 | } else {
|
---|
| 1778 | i = get_partition(0, g_partitions);
|
---|
| 1779 | }
|
---|
| 1780 | if (i == -1)
|
---|
| 1781 | return;
|
---|
| 1782 | p = ptes[i].part_table;
|
---|
| 1783 | origsys = sys = get_sysid(i);
|
---|
| 1784 |
|
---|
| 1785 | /* if changing types T to 0 is allowed, then
|
---|
| 1786 | the reverse change must be allowed, too */
|
---|
| 1787 | if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN && !get_nr_sects(p)) {
|
---|
| 1788 | printf("Partition %u does not exist yet!\n", i + 1);
|
---|
| 1789 | return;
|
---|
| 1790 | }
|
---|
| 1791 | while (1) {
|
---|
| 1792 | sys = read_hex(get_sys_types());
|
---|
| 1793 |
|
---|
| 1794 | if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN) {
|
---|
| 1795 | printf("Type 0 means free space to many systems\n"
|
---|
| 1796 | "(but not to Linux). Having partitions of\n"
|
---|
| 1797 | "type 0 is probably unwise.\n");
|
---|
| 1798 | /* break; */
|
---|
| 1799 | }
|
---|
| 1800 |
|
---|
| 1801 | if (!LABEL_IS_SUN && !LABEL_IS_SGI) {
|
---|
| 1802 | if (IS_EXTENDED(sys) != IS_EXTENDED(p->sys_ind)) {
|
---|
| 1803 | printf("You cannot change a partition into"
|
---|
| 1804 | " an extended one or vice versa\n");
|
---|
| 1805 | break;
|
---|
| 1806 | }
|
---|
| 1807 | }
|
---|
| 1808 |
|
---|
| 1809 | if (sys < 256) {
|
---|
| 1810 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
| 1811 | if (LABEL_IS_SUN && i == 2 && sys != SUN_WHOLE_DISK)
|
---|
| 1812 | printf("Consider leaving partition 3 "
|
---|
| 1813 | "as Whole disk (5),\n"
|
---|
| 1814 | "as SunOS/Solaris expects it and "
|
---|
| 1815 | "even Linux likes it\n\n");
|
---|
| 1816 | #endif
|
---|
| 1817 | #if ENABLE_FEATURE_SGI_LABEL
|
---|
| 1818 | if (LABEL_IS_SGI &&
|
---|
| 1819 | (
|
---|
| 1820 | (i == 10 && sys != SGI_ENTIRE_DISK) ||
|
---|
| 1821 | (i == 8 && sys != 0)
|
---|
| 1822 | )
|
---|
| 1823 | ) {
|
---|
| 1824 | printf("Consider leaving partition 9 "
|
---|
| 1825 | "as volume header (0),\nand "
|
---|
| 1826 | "partition 11 as entire volume (6)"
|
---|
| 1827 | "as IRIX expects it\n\n");
|
---|
| 1828 | }
|
---|
| 1829 | #endif
|
---|
| 1830 | if (sys == origsys)
|
---|
| 1831 | break;
|
---|
| 1832 | if (LABEL_IS_SUN) {
|
---|
| 1833 | sun_change_sysid(i, sys);
|
---|
| 1834 | } else if (LABEL_IS_SGI) {
|
---|
| 1835 | sgi_change_sysid(i, sys);
|
---|
| 1836 | } else
|
---|
| 1837 | p->sys_ind = sys;
|
---|
| 1838 |
|
---|
| 1839 | printf("Changed system type of partition %u "
|
---|
| 1840 | "to %x (%s)\n", i + 1, sys,
|
---|
| 1841 | partition_type(sys));
|
---|
| 1842 | ptes[i].changed = 1;
|
---|
| 1843 | //if (is_dos_partition(origsys) || is_dos_partition(sys))
|
---|
| 1844 | // dos_changed = 1;
|
---|
| 1845 | break;
|
---|
| 1846 | }
|
---|
| 1847 | }
|
---|
| 1848 | }
|
---|
| 1849 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
| 1850 |
|
---|
| 1851 |
|
---|
| 1852 | /* check_consistency() and linear2chs() added Sat Mar 6 12:28:16 1993,
|
---|
| 1853 | * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross,
|
---|
| 1854 | * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S.
|
---|
| 1855 | * Lubkin Oct. 1991). */
|
---|
| 1856 |
|
---|
| 1857 | static void
|
---|
| 1858 | linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *s)
|
---|
| 1859 | {
|
---|
| 1860 | int spc = g_heads * g_sectors;
|
---|
| 1861 |
|
---|
| 1862 | *c = ls / spc;
|
---|
| 1863 | ls = ls % spc;
|
---|
| 1864 | *h = ls / g_sectors;
|
---|
| 1865 | *s = ls % g_sectors + 1; /* sectors count from 1 */
|
---|
| 1866 | }
|
---|
| 1867 |
|
---|
| 1868 | static void
|
---|
| 1869 | check_consistency(const struct partition *p, int partition)
|
---|
| 1870 | {
|
---|
| 1871 | unsigned pbc, pbh, pbs; /* physical beginning c, h, s */
|
---|
| 1872 | unsigned pec, peh, pes; /* physical ending c, h, s */
|
---|
| 1873 | unsigned lbc, lbh, lbs; /* logical beginning c, h, s */
|
---|
| 1874 | unsigned lec, leh, les; /* logical ending c, h, s */
|
---|
| 1875 |
|
---|
| 1876 | if (!g_heads || !g_sectors || (partition >= 4))
|
---|
| 1877 | return; /* do not check extended partitions */
|
---|
| 1878 |
|
---|
| 1879 | /* physical beginning c, h, s */
|
---|
| 1880 | pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300);
|
---|
| 1881 | pbh = p->head;
|
---|
| 1882 | pbs = p->sector & 0x3f;
|
---|
| 1883 |
|
---|
| 1884 | /* physical ending c, h, s */
|
---|
| 1885 | pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300);
|
---|
| 1886 | peh = p->end_head;
|
---|
| 1887 | pes = p->end_sector & 0x3f;
|
---|
| 1888 |
|
---|
| 1889 | /* compute logical beginning (c, h, s) */
|
---|
| 1890 | linear2chs(get_start_sect(p), &lbc, &lbh, &lbs);
|
---|
| 1891 |
|
---|
| 1892 | /* compute logical ending (c, h, s) */
|
---|
| 1893 | linear2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les);
|
---|
| 1894 |
|
---|
| 1895 | /* Same physical / logical beginning? */
|
---|
| 1896 | if (g_cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
|
---|
| 1897 | printf("Partition %u has different physical/logical "
|
---|
| 1898 | "beginnings (non-Linux?):\n", partition + 1);
|
---|
| 1899 | printf(" phys=(%u, %u, %u) ", pbc, pbh, pbs);
|
---|
| 1900 | printf("logical=(%u, %u, %u)\n", lbc, lbh, lbs);
|
---|
| 1901 | }
|
---|
| 1902 |
|
---|
| 1903 | /* Same physical / logical ending? */
|
---|
| 1904 | if (g_cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
|
---|
| 1905 | printf("Partition %u has different physical/logical "
|
---|
| 1906 | "endings:\n", partition + 1);
|
---|
| 1907 | printf(" phys=(%u, %u, %u) ", pec, peh, pes);
|
---|
| 1908 | printf("logical=(%u, %u, %u)\n", lec, leh, les);
|
---|
| 1909 | }
|
---|
| 1910 |
|
---|
| 1911 | /* Ending on cylinder boundary? */
|
---|
| 1912 | if (peh != (g_heads - 1) || pes != g_sectors) {
|
---|
| 1913 | printf("Partition %u does not end on cylinder boundary\n",
|
---|
| 1914 | partition + 1);
|
---|
| 1915 | }
|
---|
| 1916 | }
|
---|
| 1917 |
|
---|
| 1918 | static void
|
---|
| 1919 | list_disk_geometry(void)
|
---|
| 1920 | {
|
---|
| 1921 | ullong bytes = ((ullong)total_number_of_sectors << 9);
|
---|
| 1922 | long megabytes = bytes / 1000000;
|
---|
| 1923 |
|
---|
| 1924 | if (megabytes < 10000)
|
---|
| 1925 | printf("\nDisk %s: %lu MB, %llu bytes\n",
|
---|
| 1926 | disk_device, megabytes, bytes);
|
---|
| 1927 | else
|
---|
| 1928 | printf("\nDisk %s: %lu.%lu GB, %llu bytes\n",
|
---|
| 1929 | disk_device, megabytes/1000, (megabytes/100)%10, bytes);
|
---|
| 1930 | printf("%u heads, %u sectors/track, %u cylinders",
|
---|
| 1931 | g_heads, g_sectors, g_cylinders);
|
---|
| 1932 | if (units_per_sector == 1)
|
---|
| 1933 | printf(", total %"SECT_FMT"u sectors",
|
---|
| 1934 | total_number_of_sectors / (sector_size/512));
|
---|
| 1935 | printf("\nUnits = %s of %u * %u = %u bytes\n\n",
|
---|
| 1936 | str_units(PLURAL),
|
---|
| 1937 | units_per_sector, sector_size, units_per_sector * sector_size);
|
---|
| 1938 | }
|
---|
| 1939 |
|
---|
| 1940 | /*
|
---|
| 1941 | * Check whether partition entries are ordered by their starting positions.
|
---|
| 1942 | * Return 0 if OK. Return i if partition i should have been earlier.
|
---|
| 1943 | * Two separate checks: primary and logical partitions.
|
---|
| 1944 | */
|
---|
| 1945 | static int
|
---|
| 1946 | wrong_p_order(int *prev)
|
---|
| 1947 | {
|
---|
| 1948 | const struct pte *pe;
|
---|
| 1949 | const struct partition *p;
|
---|
| 1950 | sector_t last_p_start_pos = 0, p_start_pos;
|
---|
| 1951 | unsigned i, last_i = 0;
|
---|
| 1952 |
|
---|
| 1953 | for (i = 0; i < g_partitions; i++) {
|
---|
| 1954 | if (i == 4) {
|
---|
| 1955 | last_i = 4;
|
---|
| 1956 | last_p_start_pos = 0;
|
---|
| 1957 | }
|
---|
| 1958 | pe = &ptes[i];
|
---|
| 1959 | p = pe->part_table;
|
---|
| 1960 | if (p->sys_ind) {
|
---|
| 1961 | p_start_pos = get_partition_start_from_dev_start(pe);
|
---|
| 1962 |
|
---|
| 1963 | if (last_p_start_pos > p_start_pos) {
|
---|
| 1964 | if (prev)
|
---|
| 1965 | *prev = last_i;
|
---|
| 1966 | return i;
|
---|
| 1967 | }
|
---|
| 1968 |
|
---|
| 1969 | last_p_start_pos = p_start_pos;
|
---|
| 1970 | last_i = i;
|
---|
| 1971 | }
|
---|
| 1972 | }
|
---|
| 1973 | return 0;
|
---|
| 1974 | }
|
---|
| 1975 |
|
---|
| 1976 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 1977 | /*
|
---|
| 1978 | * Fix the chain of logicals.
|
---|
| 1979 | * extended_offset is unchanged, the set of sectors used is unchanged
|
---|
| 1980 | * The chain is sorted so that sectors increase, and so that
|
---|
| 1981 | * starting sectors increase.
|
---|
| 1982 | *
|
---|
| 1983 | * After this it may still be that cfdisk doesnt like the table.
|
---|
| 1984 | * (This is because cfdisk considers expanded parts, from link to
|
---|
| 1985 | * end of partition, and these may still overlap.)
|
---|
| 1986 | * Now
|
---|
| 1987 | * sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda
|
---|
| 1988 | * may help.
|
---|
| 1989 | */
|
---|
| 1990 | static void
|
---|
| 1991 | fix_chain_of_logicals(void)
|
---|
| 1992 | {
|
---|
| 1993 | int j, oj, ojj, sj, sjj;
|
---|
| 1994 | struct partition *pj,*pjj,tmp;
|
---|
| 1995 |
|
---|
| 1996 | /* Stage 1: sort sectors but leave sector of part 4 */
|
---|
| 1997 | /* (Its sector is the global extended_offset.) */
|
---|
| 1998 | stage1:
|
---|
| 1999 | for (j = 5; j < g_partitions - 1; j++) {
|
---|
| 2000 | oj = ptes[j].offset_from_dev_start;
|
---|
| 2001 | ojj = ptes[j+1].offset_from_dev_start;
|
---|
| 2002 | if (oj > ojj) {
|
---|
| 2003 | ptes[j].offset_from_dev_start = ojj;
|
---|
| 2004 | ptes[j+1].offset_from_dev_start = oj;
|
---|
| 2005 | pj = ptes[j].part_table;
|
---|
| 2006 | set_start_sect(pj, get_start_sect(pj)+oj-ojj);
|
---|
| 2007 | pjj = ptes[j+1].part_table;
|
---|
| 2008 | set_start_sect(pjj, get_start_sect(pjj)+ojj-oj);
|
---|
| 2009 | set_start_sect(ptes[j-1].ext_pointer,
|
---|
| 2010 | ojj-extended_offset);
|
---|
| 2011 | set_start_sect(ptes[j].ext_pointer,
|
---|
| 2012 | oj-extended_offset);
|
---|
| 2013 | goto stage1;
|
---|
| 2014 | }
|
---|
| 2015 | }
|
---|
| 2016 |
|
---|
| 2017 | /* Stage 2: sort starting sectors */
|
---|
| 2018 | stage2:
|
---|
| 2019 | for (j = 4; j < g_partitions - 1; j++) {
|
---|
| 2020 | pj = ptes[j].part_table;
|
---|
| 2021 | pjj = ptes[j+1].part_table;
|
---|
| 2022 | sj = get_start_sect(pj);
|
---|
| 2023 | sjj = get_start_sect(pjj);
|
---|
| 2024 | oj = ptes[j].offset_from_dev_start;
|
---|
| 2025 | ojj = ptes[j+1].offset_from_dev_start;
|
---|
| 2026 | if (oj+sj > ojj+sjj) {
|
---|
| 2027 | tmp = *pj;
|
---|
| 2028 | *pj = *pjj;
|
---|
| 2029 | *pjj = tmp;
|
---|
| 2030 | set_start_sect(pj, ojj+sjj-oj);
|
---|
| 2031 | set_start_sect(pjj, oj+sj-ojj);
|
---|
| 2032 | goto stage2;
|
---|
| 2033 | }
|
---|
| 2034 | }
|
---|
| 2035 |
|
---|
| 2036 | /* Probably something was changed */
|
---|
| 2037 | for (j = 4; j < g_partitions; j++)
|
---|
| 2038 | ptes[j].changed = 1;
|
---|
| 2039 | }
|
---|
| 2040 |
|
---|
| 2041 |
|
---|
| 2042 | static void
|
---|
| 2043 | fix_partition_table_order(void)
|
---|
| 2044 | {
|
---|
| 2045 | struct pte *pei, *pek;
|
---|
| 2046 | int i,k;
|
---|
| 2047 |
|
---|
| 2048 | if (!wrong_p_order(NULL)) {
|
---|
| 2049 | printf("Ordering is already correct\n\n");
|
---|
| 2050 | return;
|
---|
| 2051 | }
|
---|
| 2052 |
|
---|
| 2053 | while ((i = wrong_p_order(&k)) != 0 && i < 4) {
|
---|
| 2054 | /* partition i should have come earlier, move it */
|
---|
| 2055 | /* We have to move data in the MBR */
|
---|
| 2056 | struct partition *pi, *pk, *pe, pbuf;
|
---|
| 2057 | pei = &ptes[i];
|
---|
| 2058 | pek = &ptes[k];
|
---|
| 2059 |
|
---|
| 2060 | pe = pei->ext_pointer;
|
---|
| 2061 | pei->ext_pointer = pek->ext_pointer;
|
---|
| 2062 | pek->ext_pointer = pe;
|
---|
| 2063 |
|
---|
| 2064 | pi = pei->part_table;
|
---|
| 2065 | pk = pek->part_table;
|
---|
| 2066 |
|
---|
| 2067 | memmove(&pbuf, pi, sizeof(struct partition));
|
---|
| 2068 | memmove(pi, pk, sizeof(struct partition));
|
---|
| 2069 | memmove(pk, &pbuf, sizeof(struct partition));
|
---|
| 2070 |
|
---|
| 2071 | pei->changed = pek->changed = 1;
|
---|
| 2072 | }
|
---|
| 2073 |
|
---|
| 2074 | if (i)
|
---|
| 2075 | fix_chain_of_logicals();
|
---|
| 2076 |
|
---|
| 2077 | printf("Done.\n");
|
---|
| 2078 | }
|
---|
| 2079 | #endif
|
---|
| 2080 |
|
---|
| 2081 | static void
|
---|
| 2082 | list_table(int xtra)
|
---|
| 2083 | {
|
---|
| 2084 | const struct partition *p;
|
---|
| 2085 | int i, w;
|
---|
| 2086 |
|
---|
| 2087 | if (LABEL_IS_SUN) {
|
---|
| 2088 | sun_list_table(xtra);
|
---|
| 2089 | return;
|
---|
| 2090 | }
|
---|
| 2091 | if (LABEL_IS_SGI) {
|
---|
| 2092 | sgi_list_table(xtra);
|
---|
| 2093 | return;
|
---|
| 2094 | }
|
---|
| 2095 | if (LABEL_IS_GPT) {
|
---|
| 2096 | gpt_list_table(xtra);
|
---|
| 2097 | return;
|
---|
| 2098 | }
|
---|
| 2099 |
|
---|
| 2100 | list_disk_geometry();
|
---|
| 2101 |
|
---|
| 2102 | if (LABEL_IS_OSF) {
|
---|
| 2103 | xbsd_print_disklabel(xtra);
|
---|
| 2104 | return;
|
---|
| 2105 | }
|
---|
| 2106 |
|
---|
| 2107 | /* Heuristic: we list partition 3 of /dev/foo as /dev/foo3,
|
---|
| 2108 | but if the device name ends in a digit, say /dev/foo1,
|
---|
| 2109 | then the partition is called /dev/foo1p3. */
|
---|
| 2110 | w = strlen(disk_device);
|
---|
| 2111 | if (w && isdigit(disk_device[w-1]))
|
---|
| 2112 | w++;
|
---|
| 2113 | if (w < 5)
|
---|
| 2114 | w = 5;
|
---|
| 2115 |
|
---|
| 2116 | // 1 12345678901 12345678901 12345678901 12
|
---|
| 2117 | printf("%*s Boot Start End Blocks Id System\n",
|
---|
| 2118 | w+1, "Device");
|
---|
| 2119 |
|
---|
| 2120 | for (i = 0; i < g_partitions; i++) {
|
---|
| 2121 | const struct pte *pe = &ptes[i];
|
---|
| 2122 | sector_t psects;
|
---|
| 2123 | sector_t pblocks;
|
---|
| 2124 | unsigned podd;
|
---|
| 2125 |
|
---|
| 2126 | p = pe->part_table;
|
---|
| 2127 | if (!p || is_cleared_partition(p))
|
---|
| 2128 | continue;
|
---|
| 2129 |
|
---|
| 2130 | psects = get_nr_sects(p);
|
---|
| 2131 | pblocks = psects;
|
---|
| 2132 | podd = 0;
|
---|
| 2133 |
|
---|
| 2134 | if (sector_size < 1024) {
|
---|
| 2135 | pblocks /= (1024 / sector_size);
|
---|
| 2136 | podd = psects % (1024 / sector_size);
|
---|
| 2137 | }
|
---|
| 2138 | if (sector_size > 1024)
|
---|
| 2139 | pblocks *= (sector_size / 1024);
|
---|
| 2140 |
|
---|
| 2141 | printf("%s %c %11"SECT_FMT"u %11"SECT_FMT"u %11"SECT_FMT"u%c %2x %s\n",
|
---|
| 2142 | partname(disk_device, i+1, w+2),
|
---|
| 2143 | !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */
|
---|
| 2144 | ? '*' : '?',
|
---|
| 2145 | cround(get_partition_start_from_dev_start(pe)), /* start */
|
---|
| 2146 | cround(get_partition_start_from_dev_start(pe) + psects /* end */
|
---|
| 2147 | - (psects ? 1 : 0)),
|
---|
| 2148 | pblocks, podd ? '+' : ' ', /* odd flag on end */
|
---|
| 2149 | p->sys_ind, /* type id */
|
---|
| 2150 | partition_type(p->sys_ind)); /* type name */
|
---|
| 2151 |
|
---|
| 2152 | check_consistency(p, i);
|
---|
| 2153 | }
|
---|
| 2154 |
|
---|
| 2155 | /* Is partition table in disk order? It need not be, but... */
|
---|
| 2156 | /* partition table entries are not checked for correct order
|
---|
| 2157 | * if this is a sgi, sun or aix labeled disk... */
|
---|
| 2158 | if (LABEL_IS_DOS && wrong_p_order(NULL)) {
|
---|
| 2159 | /* FIXME */
|
---|
| 2160 | printf("\nPartition table entries are not in disk order\n");
|
---|
| 2161 | }
|
---|
| 2162 | }
|
---|
| 2163 |
|
---|
| 2164 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 2165 | static void
|
---|
| 2166 | x_list_table(int extend)
|
---|
| 2167 | {
|
---|
| 2168 | const struct pte *pe;
|
---|
| 2169 | const struct partition *p;
|
---|
| 2170 | int i;
|
---|
| 2171 |
|
---|
| 2172 | printf("\nDisk %s: %u heads, %u sectors, %u cylinders\n\n",
|
---|
| 2173 | disk_device, g_heads, g_sectors, g_cylinders);
|
---|
| 2174 | printf("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n");
|
---|
| 2175 | for (i = 0; i < g_partitions; i++) {
|
---|
| 2176 | pe = &ptes[i];
|
---|
| 2177 | p = (extend ? pe->ext_pointer : pe->part_table);
|
---|
| 2178 | if (p != NULL) {
|
---|
| 2179 | printf("%2u %02x%4u%4u%5u%4u%4u%5u%11"SECT_FMT"u%11"SECT_FMT"u %02x\n",
|
---|
| 2180 | i + 1, p->boot_ind, p->head,
|
---|
| 2181 | sector(p->sector),
|
---|
| 2182 | cylinder(p->sector, p->cyl), p->end_head,
|
---|
| 2183 | sector(p->end_sector),
|
---|
| 2184 | cylinder(p->end_sector, p->end_cyl),
|
---|
| 2185 | get_start_sect(p), get_nr_sects(p),
|
---|
| 2186 | p->sys_ind);
|
---|
| 2187 | if (p->sys_ind)
|
---|
| 2188 | check_consistency(p, i);
|
---|
| 2189 | }
|
---|
| 2190 | }
|
---|
| 2191 | }
|
---|
| 2192 | #endif
|
---|
| 2193 |
|
---|
| 2194 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 2195 | static void
|
---|
| 2196 | fill_bounds(sector_t *first, sector_t *last)
|
---|
| 2197 | {
|
---|
| 2198 | unsigned i;
|
---|
| 2199 | const struct pte *pe = &ptes[0];
|
---|
| 2200 | const struct partition *p;
|
---|
| 2201 |
|
---|
| 2202 | for (i = 0; i < g_partitions; pe++,i++) {
|
---|
| 2203 | p = pe->part_table;
|
---|
| 2204 | if (!p->sys_ind || IS_EXTENDED(p->sys_ind)) {
|
---|
| 2205 | first[i] = 0xffffffff;
|
---|
| 2206 | last[i] = 0;
|
---|
| 2207 | } else {
|
---|
| 2208 | first[i] = get_partition_start_from_dev_start(pe);
|
---|
| 2209 | last[i] = first[i] + get_nr_sects(p) - 1;
|
---|
| 2210 | }
|
---|
| 2211 | }
|
---|
| 2212 | }
|
---|
| 2213 |
|
---|
| 2214 | static void
|
---|
| 2215 | check(int n, unsigned h, unsigned s, unsigned c, sector_t start)
|
---|
| 2216 | {
|
---|
| 2217 | sector_t total, real_s, real_c;
|
---|
| 2218 |
|
---|
| 2219 | real_s = sector(s) - 1;
|
---|
| 2220 | real_c = cylinder(s, c);
|
---|
| 2221 | total = (real_c * g_sectors + real_s) * g_heads + h;
|
---|
| 2222 | if (!total)
|
---|
| 2223 | printf("Partition %u contains sector 0\n", n);
|
---|
| 2224 | if (h >= g_heads)
|
---|
| 2225 | printf("Partition %u: head %u greater than maximum %u\n",
|
---|
| 2226 | n, h + 1, g_heads);
|
---|
| 2227 | if (real_s >= g_sectors)
|
---|
| 2228 | printf("Partition %u: sector %u greater than "
|
---|
| 2229 | "maximum %u\n", n, s, g_sectors);
|
---|
| 2230 | if (real_c >= g_cylinders)
|
---|
| 2231 | printf("Partition %u: cylinder %"SECT_FMT"u greater than "
|
---|
| 2232 | "maximum %u\n", n, real_c + 1, g_cylinders);
|
---|
| 2233 | if (g_cylinders <= 1024 && start != total)
|
---|
| 2234 | printf("Partition %u: previous sectors %"SECT_FMT"u disagrees with "
|
---|
| 2235 | "total %"SECT_FMT"u\n", n, start, total);
|
---|
| 2236 | }
|
---|
| 2237 |
|
---|
| 2238 | static void
|
---|
| 2239 | verify(void)
|
---|
| 2240 | {
|
---|
| 2241 | int i, j;
|
---|
| 2242 | sector_t total = 1;
|
---|
| 2243 | sector_t first[g_partitions], last[g_partitions];
|
---|
| 2244 | struct partition *p;
|
---|
| 2245 |
|
---|
| 2246 | if (warn_geometry())
|
---|
| 2247 | return;
|
---|
| 2248 |
|
---|
| 2249 | if (LABEL_IS_SUN) {
|
---|
| 2250 | verify_sun();
|
---|
| 2251 | return;
|
---|
| 2252 | }
|
---|
| 2253 | if (LABEL_IS_SGI) {
|
---|
| 2254 | verify_sgi(1);
|
---|
| 2255 | return;
|
---|
| 2256 | }
|
---|
| 2257 |
|
---|
| 2258 | fill_bounds(first, last);
|
---|
| 2259 | for (i = 0; i < g_partitions; i++) {
|
---|
| 2260 | struct pte *pe = &ptes[i];
|
---|
| 2261 |
|
---|
| 2262 | p = pe->part_table;
|
---|
| 2263 | if (p->sys_ind && !IS_EXTENDED(p->sys_ind)) {
|
---|
| 2264 | check_consistency(p, i);
|
---|
| 2265 | if (get_partition_start_from_dev_start(pe) < first[i])
|
---|
| 2266 | printf("Warning: bad start-of-data in "
|
---|
| 2267 | "partition %u\n", i + 1);
|
---|
| 2268 | check(i + 1, p->end_head, p->end_sector, p->end_cyl,
|
---|
| 2269 | last[i]);
|
---|
| 2270 | total += last[i] + 1 - first[i];
|
---|
| 2271 | for (j = 0; j < i; j++) {
|
---|
| 2272 | if ((first[i] >= first[j] && first[i] <= last[j])
|
---|
| 2273 | || ((last[i] <= last[j] && last[i] >= first[j]))) {
|
---|
| 2274 | printf("Warning: partition %u overlaps "
|
---|
| 2275 | "partition %u\n", j + 1, i + 1);
|
---|
| 2276 | total += first[i] >= first[j] ?
|
---|
| 2277 | first[i] : first[j];
|
---|
| 2278 | total -= last[i] <= last[j] ?
|
---|
| 2279 | last[i] : last[j];
|
---|
| 2280 | }
|
---|
| 2281 | }
|
---|
| 2282 | }
|
---|
| 2283 | }
|
---|
| 2284 |
|
---|
| 2285 | if (extended_offset) {
|
---|
| 2286 | struct pte *pex = &ptes[ext_index];
|
---|
| 2287 | sector_t e_last = get_start_sect(pex->part_table) +
|
---|
| 2288 | get_nr_sects(pex->part_table) - 1;
|
---|
| 2289 |
|
---|
| 2290 | for (i = 4; i < g_partitions; i++) {
|
---|
| 2291 | total++;
|
---|
| 2292 | p = ptes[i].part_table;
|
---|
| 2293 | if (!p->sys_ind) {
|
---|
| 2294 | if (i != 4 || i + 1 < g_partitions)
|
---|
| 2295 | printf("Warning: partition %u "
|
---|
| 2296 | "is empty\n", i + 1);
|
---|
| 2297 | } else if (first[i] < extended_offset || last[i] > e_last) {
|
---|
| 2298 | printf("Logical partition %u not entirely in "
|
---|
| 2299 | "partition %u\n", i + 1, ext_index + 1);
|
---|
| 2300 | }
|
---|
| 2301 | }
|
---|
| 2302 | }
|
---|
| 2303 |
|
---|
| 2304 | if (total > g_heads * g_sectors * g_cylinders)
|
---|
| 2305 | printf("Total allocated sectors %u greater than the maximum "
|
---|
| 2306 | "%u\n", total, g_heads * g_sectors * g_cylinders);
|
---|
| 2307 | else {
|
---|
| 2308 | total = g_heads * g_sectors * g_cylinders - total;
|
---|
| 2309 | if (total != 0)
|
---|
| 2310 | printf("%"SECT_FMT"u unallocated sectors\n", total);
|
---|
| 2311 | }
|
---|
| 2312 | }
|
---|
| 2313 |
|
---|
| 2314 | static void
|
---|
| 2315 | add_partition(int n, int sys)
|
---|
| 2316 | {
|
---|
| 2317 | char mesg[256]; /* 48 does not suffice in Japanese */
|
---|
| 2318 | int i, num_read = 0;
|
---|
| 2319 | struct partition *p = ptes[n].part_table;
|
---|
| 2320 | struct partition *q = ptes[ext_index].part_table;
|
---|
| 2321 | sector_t limit, temp;
|
---|
| 2322 | sector_t start, stop = 0;
|
---|
| 2323 | sector_t first[g_partitions], last[g_partitions];
|
---|
| 2324 |
|
---|
| 2325 | if (p && p->sys_ind) {
|
---|
| 2326 | printf(msg_part_already_defined, n + 1);
|
---|
| 2327 | return;
|
---|
| 2328 | }
|
---|
| 2329 | fill_bounds(first, last);
|
---|
| 2330 | if (n < 4) {
|
---|
| 2331 | start = sector_offset;
|
---|
| 2332 | if (display_in_cyl_units || !total_number_of_sectors)
|
---|
| 2333 | limit = (sector_t) g_heads * g_sectors * g_cylinders - 1;
|
---|
| 2334 | else
|
---|
| 2335 | limit = total_number_of_sectors - 1;
|
---|
| 2336 | if (extended_offset) {
|
---|
| 2337 | first[ext_index] = extended_offset;
|
---|
| 2338 | last[ext_index] = get_start_sect(q) +
|
---|
| 2339 | get_nr_sects(q) - 1;
|
---|
| 2340 | }
|
---|
| 2341 | } else {
|
---|
| 2342 | start = extended_offset + sector_offset;
|
---|
| 2343 | limit = get_start_sect(q) + get_nr_sects(q) - 1;
|
---|
| 2344 | }
|
---|
| 2345 | if (display_in_cyl_units)
|
---|
| 2346 | for (i = 0; i < g_partitions; i++)
|
---|
| 2347 | first[i] = (cround(first[i]) - 1) * units_per_sector;
|
---|
| 2348 |
|
---|
| 2349 | snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR));
|
---|
| 2350 | do {
|
---|
| 2351 | temp = start;
|
---|
| 2352 | for (i = 0; i < g_partitions; i++) {
|
---|
| 2353 | int lastplusoff;
|
---|
| 2354 |
|
---|
| 2355 | if (start == ptes[i].offset_from_dev_start)
|
---|
| 2356 | start += sector_offset;
|
---|
| 2357 | lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset);
|
---|
| 2358 | if (start >= first[i] && start <= lastplusoff)
|
---|
| 2359 | start = lastplusoff + 1;
|
---|
| 2360 | }
|
---|
| 2361 | if (start > limit)
|
---|
| 2362 | break;
|
---|
| 2363 | if (start >= temp+units_per_sector && num_read) {
|
---|
| 2364 | printf("Sector %"SECT_FMT"u is already allocated\n", temp);
|
---|
| 2365 | temp = start;
|
---|
| 2366 | num_read = 0;
|
---|
| 2367 | }
|
---|
| 2368 | if (!num_read && start == temp) {
|
---|
| 2369 | sector_t saved_start;
|
---|
| 2370 |
|
---|
| 2371 | saved_start = start;
|
---|
| 2372 | start = read_int(cround(saved_start), cround(saved_start), cround(limit), 0, mesg);
|
---|
| 2373 | if (display_in_cyl_units) {
|
---|
| 2374 | start = (start - 1) * units_per_sector;
|
---|
| 2375 | if (start < saved_start)
|
---|
| 2376 | start = saved_start;
|
---|
| 2377 | }
|
---|
| 2378 | num_read = 1;
|
---|
| 2379 | }
|
---|
| 2380 | } while (start != temp || !num_read);
|
---|
| 2381 | if (n > 4) { /* NOT for fifth partition */
|
---|
| 2382 | struct pte *pe = &ptes[n];
|
---|
| 2383 |
|
---|
| 2384 | pe->offset_from_dev_start = start - sector_offset;
|
---|
| 2385 | if (pe->offset_from_dev_start == extended_offset) { /* must be corrected */
|
---|
| 2386 | pe->offset_from_dev_start++;
|
---|
| 2387 | if (sector_offset == 1)
|
---|
| 2388 | start++;
|
---|
| 2389 | }
|
---|
| 2390 | }
|
---|
| 2391 |
|
---|
| 2392 | for (i = 0; i < g_partitions; i++) {
|
---|
| 2393 | struct pte *pe = &ptes[i];
|
---|
| 2394 |
|
---|
| 2395 | if (start < pe->offset_from_dev_start && limit >= pe->offset_from_dev_start)
|
---|
| 2396 | limit = pe->offset_from_dev_start - 1;
|
---|
| 2397 | if (start < first[i] && limit >= first[i])
|
---|
| 2398 | limit = first[i] - 1;
|
---|
| 2399 | }
|
---|
| 2400 | if (start > limit) {
|
---|
| 2401 | printf("No free sectors available\n");
|
---|
| 2402 | if (n > 4)
|
---|
| 2403 | g_partitions--;
|
---|
| 2404 | return;
|
---|
| 2405 | }
|
---|
| 2406 | if (cround(start) == cround(limit)) {
|
---|
| 2407 | stop = limit;
|
---|
| 2408 | } else {
|
---|
| 2409 | snprintf(mesg, sizeof(mesg),
|
---|
| 2410 | "Last %s or +size or +sizeM or +sizeK",
|
---|
| 2411 | str_units(SINGULAR));
|
---|
| 2412 | stop = read_int(cround(start), cround(limit), cround(limit), cround(start), mesg);
|
---|
| 2413 | if (display_in_cyl_units) {
|
---|
| 2414 | stop = stop * units_per_sector - 1;
|
---|
| 2415 | if (stop >limit)
|
---|
| 2416 | stop = limit;
|
---|
| 2417 | }
|
---|
| 2418 | }
|
---|
| 2419 |
|
---|
| 2420 | set_partition(n, 0, start, stop, sys);
|
---|
| 2421 | if (n > 4)
|
---|
| 2422 | set_partition(n - 1, 1, ptes[n].offset_from_dev_start, stop, EXTENDED);
|
---|
| 2423 |
|
---|
| 2424 | if (IS_EXTENDED(sys)) {
|
---|
| 2425 | struct pte *pe4 = &ptes[4];
|
---|
| 2426 | struct pte *pen = &ptes[n];
|
---|
| 2427 |
|
---|
| 2428 | ext_index = n;
|
---|
| 2429 | pen->ext_pointer = p;
|
---|
| 2430 | pe4->offset_from_dev_start = extended_offset = start;
|
---|
| 2431 | pe4->sectorbuffer = xzalloc(sector_size);
|
---|
| 2432 | pe4->part_table = pt_offset(pe4->sectorbuffer, 0);
|
---|
| 2433 | pe4->ext_pointer = pe4->part_table + 1;
|
---|
| 2434 | pe4->changed = 1;
|
---|
| 2435 | g_partitions = 5;
|
---|
| 2436 | }
|
---|
| 2437 | }
|
---|
| 2438 |
|
---|
| 2439 | static void
|
---|
| 2440 | add_logical(void)
|
---|
| 2441 | {
|
---|
| 2442 | if (g_partitions > 5 || ptes[4].part_table->sys_ind) {
|
---|
| 2443 | struct pte *pe = &ptes[g_partitions];
|
---|
| 2444 |
|
---|
| 2445 | pe->sectorbuffer = xzalloc(sector_size);
|
---|
| 2446 | pe->part_table = pt_offset(pe->sectorbuffer, 0);
|
---|
| 2447 | pe->ext_pointer = pe->part_table + 1;
|
---|
| 2448 | pe->offset_from_dev_start = 0;
|
---|
| 2449 | pe->changed = 1;
|
---|
| 2450 | g_partitions++;
|
---|
| 2451 | }
|
---|
| 2452 | add_partition(g_partitions - 1, LINUX_NATIVE);
|
---|
| 2453 | }
|
---|
| 2454 |
|
---|
| 2455 | static void
|
---|
| 2456 | new_partition(void)
|
---|
| 2457 | {
|
---|
| 2458 | int i, free_primary = 0;
|
---|
| 2459 |
|
---|
| 2460 | if (warn_geometry())
|
---|
| 2461 | return;
|
---|
| 2462 |
|
---|
| 2463 | if (LABEL_IS_SUN) {
|
---|
| 2464 | add_sun_partition(get_partition(0, g_partitions), LINUX_NATIVE);
|
---|
| 2465 | return;
|
---|
| 2466 | }
|
---|
| 2467 | if (LABEL_IS_SGI) {
|
---|
| 2468 | sgi_add_partition(get_partition(0, g_partitions), LINUX_NATIVE);
|
---|
| 2469 | return;
|
---|
| 2470 | }
|
---|
| 2471 | if (LABEL_IS_AIX) {
|
---|
| 2472 | printf("Sorry - this fdisk cannot handle AIX disk labels.\n"
|
---|
| 2473 | "If you want to add DOS-type partitions, create a new empty DOS partition\n"
|
---|
| 2474 | "table first (use 'o'). This will destroy the present disk contents.\n");
|
---|
| 2475 | return;
|
---|
| 2476 | }
|
---|
| 2477 |
|
---|
| 2478 | for (i = 0; i < 4; i++)
|
---|
| 2479 | free_primary += !ptes[i].part_table->sys_ind;
|
---|
| 2480 |
|
---|
| 2481 | if (!free_primary && g_partitions >= MAXIMUM_PARTS) {
|
---|
| 2482 | printf("The maximum number of partitions has been created\n");
|
---|
| 2483 | return;
|
---|
| 2484 | }
|
---|
| 2485 |
|
---|
| 2486 | if (!free_primary) {
|
---|
| 2487 | if (extended_offset)
|
---|
| 2488 | add_logical();
|
---|
| 2489 | else
|
---|
| 2490 | printf("You must delete some partition and add "
|
---|
| 2491 | "an extended partition first\n");
|
---|
| 2492 | } else {
|
---|
| 2493 | char c, line[80];
|
---|
| 2494 | snprintf(line, sizeof(line),
|
---|
| 2495 | "Command action\n"
|
---|
| 2496 | " %s\n"
|
---|
| 2497 | " p primary partition (1-4)\n",
|
---|
| 2498 | (extended_offset ?
|
---|
| 2499 | "l logical (5 or over)" : "e extended"));
|
---|
| 2500 | while (1) {
|
---|
| 2501 | c = read_nonempty(line);
|
---|
| 2502 | if ((c | 0x20) == 'p') {
|
---|
| 2503 | i = get_nonexisting_partition(0, 4);
|
---|
| 2504 | if (i >= 0)
|
---|
| 2505 | add_partition(i, LINUX_NATIVE);
|
---|
| 2506 | return;
|
---|
| 2507 | }
|
---|
| 2508 | if (c == 'l' && extended_offset) {
|
---|
| 2509 | add_logical();
|
---|
| 2510 | return;
|
---|
| 2511 | }
|
---|
| 2512 | if (c == 'e' && !extended_offset) {
|
---|
| 2513 | i = get_nonexisting_partition(0, 4);
|
---|
| 2514 | if (i >= 0)
|
---|
| 2515 | add_partition(i, EXTENDED);
|
---|
| 2516 | return;
|
---|
| 2517 | }
|
---|
| 2518 | printf("Invalid partition number "
|
---|
| 2519 | "for type '%c'\n", c);
|
---|
| 2520 | }
|
---|
| 2521 | }
|
---|
| 2522 | }
|
---|
| 2523 |
|
---|
| 2524 | static void
|
---|
| 2525 | write_table(void)
|
---|
| 2526 | {
|
---|
| 2527 | int i;
|
---|
| 2528 |
|
---|
| 2529 | if (LABEL_IS_DOS) {
|
---|
| 2530 | for (i = 0; i < 3; i++)
|
---|
| 2531 | if (ptes[i].changed)
|
---|
| 2532 | ptes[3].changed = 1;
|
---|
| 2533 | for (i = 3; i < g_partitions; i++) {
|
---|
| 2534 | struct pte *pe = &ptes[i];
|
---|
| 2535 |
|
---|
| 2536 | if (pe->changed) {
|
---|
| 2537 | write_part_table_flag(pe->sectorbuffer);
|
---|
| 2538 | write_sector(pe->offset_from_dev_start, pe->sectorbuffer);
|
---|
| 2539 | }
|
---|
| 2540 | }
|
---|
| 2541 | }
|
---|
| 2542 | else if (LABEL_IS_SGI) {
|
---|
| 2543 | /* no test on change? the printf below might be mistaken */
|
---|
| 2544 | sgi_write_table();
|
---|
| 2545 | }
|
---|
| 2546 | else if (LABEL_IS_SUN) {
|
---|
| 2547 | int needw = 0;
|
---|
| 2548 |
|
---|
| 2549 | for (i = 0; i < 8; i++)
|
---|
| 2550 | if (ptes[i].changed)
|
---|
| 2551 | needw = 1;
|
---|
| 2552 | if (needw)
|
---|
| 2553 | sun_write_table();
|
---|
| 2554 | }
|
---|
| 2555 |
|
---|
| 2556 | printf("The partition table has been altered!\n\n");
|
---|
| 2557 | reread_partition_table(1);
|
---|
| 2558 | }
|
---|
| 2559 |
|
---|
| 2560 | static void
|
---|
| 2561 | reread_partition_table(int leave)
|
---|
| 2562 | {
|
---|
| 2563 | int i;
|
---|
| 2564 |
|
---|
| 2565 | printf("Calling ioctl() to re-read partition table\n");
|
---|
| 2566 | sync();
|
---|
| 2567 | /* sleep(2); Huh? */
|
---|
| 2568 | i = ioctl_or_perror(dev_fd, BLKRRPART, NULL,
|
---|
| 2569 | "WARNING: rereading partition table "
|
---|
| 2570 | "failed, kernel still uses old table");
|
---|
| 2571 | #if 0
|
---|
| 2572 | if (dos_changed)
|
---|
| 2573 | printf(
|
---|
| 2574 | "\nWARNING: If you have created or modified any DOS 6.x\n"
|
---|
| 2575 | "partitions, please see the fdisk manual page for additional\n"
|
---|
| 2576 | "information\n");
|
---|
| 2577 | #endif
|
---|
| 2578 |
|
---|
| 2579 | if (leave) {
|
---|
| 2580 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 2581 | close_dev_fd();
|
---|
| 2582 | exit(i != 0);
|
---|
| 2583 | }
|
---|
| 2584 | }
|
---|
| 2585 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
| 2586 |
|
---|
| 2587 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 2588 | #define MAX_PER_LINE 16
|
---|
| 2589 | static void
|
---|
| 2590 | print_buffer(char *pbuffer)
|
---|
| 2591 | {
|
---|
| 2592 | int i,l;
|
---|
| 2593 |
|
---|
| 2594 | for (i = 0, l = 0; i < sector_size; i++, l++) {
|
---|
| 2595 | if (l == 0)
|
---|
| 2596 | printf("0x%03X:", i);
|
---|
| 2597 | printf(" %02X", (unsigned char) pbuffer[i]);
|
---|
| 2598 | if (l == MAX_PER_LINE - 1) {
|
---|
| 2599 | bb_putchar('\n');
|
---|
| 2600 | l = -1;
|
---|
| 2601 | }
|
---|
| 2602 | }
|
---|
| 2603 | if (l > 0)
|
---|
| 2604 | bb_putchar('\n');
|
---|
| 2605 | bb_putchar('\n');
|
---|
| 2606 | }
|
---|
| 2607 |
|
---|
| 2608 | static void
|
---|
| 2609 | print_raw(void)
|
---|
| 2610 | {
|
---|
| 2611 | int i;
|
---|
| 2612 |
|
---|
| 2613 | printf("Device: %s\n", disk_device);
|
---|
| 2614 | if (LABEL_IS_SGI || LABEL_IS_SUN)
|
---|
| 2615 | print_buffer(MBRbuffer);
|
---|
| 2616 | else {
|
---|
| 2617 | for (i = 3; i < g_partitions; i++)
|
---|
| 2618 | print_buffer(ptes[i].sectorbuffer);
|
---|
| 2619 | }
|
---|
| 2620 | }
|
---|
| 2621 |
|
---|
| 2622 | static void
|
---|
| 2623 | move_begin(unsigned i)
|
---|
| 2624 | {
|
---|
| 2625 | struct pte *pe = &ptes[i];
|
---|
| 2626 | struct partition *p = pe->part_table;
|
---|
| 2627 | sector_t new, first, nr_sects;
|
---|
| 2628 |
|
---|
| 2629 | if (warn_geometry())
|
---|
| 2630 | return;
|
---|
| 2631 | nr_sects = get_nr_sects(p);
|
---|
| 2632 | if (!p->sys_ind || !nr_sects || IS_EXTENDED(p->sys_ind)) {
|
---|
| 2633 | printf("Partition %u has no data area\n", i + 1);
|
---|
| 2634 | return;
|
---|
| 2635 | }
|
---|
| 2636 | first = get_partition_start_from_dev_start(pe); /* == pe->offset_from_dev_start + get_start_sect(p) */
|
---|
| 2637 | new = read_int(0 /*was:first*/, first, first + nr_sects - 1, first, "New beginning of data");
|
---|
| 2638 | if (new != first) {
|
---|
| 2639 | sector_t new_relative = new - pe->offset_from_dev_start;
|
---|
| 2640 | nr_sects += (get_start_sect(p) - new_relative);
|
---|
| 2641 | set_start_sect(p, new_relative);
|
---|
| 2642 | set_nr_sects(p, nr_sects);
|
---|
| 2643 | read_nonempty("Recalculate C/H/S values? (Y/N): ");
|
---|
| 2644 | if ((line_ptr[0] | 0x20) == 'y')
|
---|
| 2645 | set_hsc_start_end(p, new, new + nr_sects - 1);
|
---|
| 2646 | pe->changed = 1;
|
---|
| 2647 | }
|
---|
| 2648 | }
|
---|
| 2649 |
|
---|
| 2650 | static void
|
---|
| 2651 | xselect(void)
|
---|
| 2652 | {
|
---|
| 2653 | char c;
|
---|
| 2654 |
|
---|
| 2655 | while (1) {
|
---|
| 2656 | bb_putchar('\n');
|
---|
| 2657 | c = 0x20 | read_nonempty("Expert command (m for help): ");
|
---|
| 2658 | switch (c) {
|
---|
| 2659 | case 'a':
|
---|
| 2660 | if (LABEL_IS_SUN)
|
---|
| 2661 | sun_set_alt_cyl();
|
---|
| 2662 | break;
|
---|
| 2663 | case 'b':
|
---|
| 2664 | if (LABEL_IS_DOS)
|
---|
| 2665 | move_begin(get_partition(0, g_partitions));
|
---|
| 2666 | break;
|
---|
| 2667 | case 'c':
|
---|
| 2668 | user_cylinders = g_cylinders =
|
---|
| 2669 | read_int(1, g_cylinders, 1048576, 0,
|
---|
| 2670 | "Number of cylinders");
|
---|
| 2671 | if (LABEL_IS_SUN)
|
---|
| 2672 | sun_set_ncyl(g_cylinders);
|
---|
| 2673 | if (LABEL_IS_DOS)
|
---|
| 2674 | warn_cylinders();
|
---|
| 2675 | break;
|
---|
| 2676 | case 'd':
|
---|
| 2677 | print_raw();
|
---|
| 2678 | break;
|
---|
| 2679 | case 'e':
|
---|
| 2680 | if (LABEL_IS_SGI)
|
---|
| 2681 | sgi_set_xcyl();
|
---|
| 2682 | else if (LABEL_IS_SUN)
|
---|
| 2683 | sun_set_xcyl();
|
---|
| 2684 | else if (LABEL_IS_DOS)
|
---|
| 2685 | x_list_table(1);
|
---|
| 2686 | break;
|
---|
| 2687 | case 'f':
|
---|
| 2688 | if (LABEL_IS_DOS)
|
---|
| 2689 | fix_partition_table_order();
|
---|
| 2690 | break;
|
---|
| 2691 | case 'g':
|
---|
| 2692 | #if ENABLE_FEATURE_SGI_LABEL
|
---|
| 2693 | create_sgilabel();
|
---|
| 2694 | #endif
|
---|
| 2695 | break;
|
---|
| 2696 | case 'h':
|
---|
| 2697 | user_heads = g_heads = read_int(1, g_heads, 256, 0, "Number of heads");
|
---|
| 2698 | update_units();
|
---|
| 2699 | break;
|
---|
| 2700 | case 'i':
|
---|
| 2701 | if (LABEL_IS_SUN)
|
---|
| 2702 | sun_set_ilfact();
|
---|
| 2703 | break;
|
---|
| 2704 | case 'o':
|
---|
| 2705 | if (LABEL_IS_SUN)
|
---|
| 2706 | sun_set_rspeed();
|
---|
| 2707 | break;
|
---|
| 2708 | case 'p':
|
---|
| 2709 | if (LABEL_IS_SUN)
|
---|
| 2710 | list_table(1);
|
---|
| 2711 | else
|
---|
| 2712 | x_list_table(0);
|
---|
| 2713 | break;
|
---|
| 2714 | case 'q':
|
---|
| 2715 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 2716 | close_dev_fd();
|
---|
| 2717 | bb_putchar('\n');
|
---|
| 2718 | exit(EXIT_SUCCESS);
|
---|
| 2719 | case 'r':
|
---|
| 2720 | return;
|
---|
| 2721 | case 's':
|
---|
| 2722 | user_sectors = g_sectors = read_int(1, g_sectors, 63, 0, "Number of sectors");
|
---|
| 2723 | if (dos_compatible_flag) {
|
---|
| 2724 | sector_offset = g_sectors;
|
---|
| 2725 | printf("Warning: setting sector offset for DOS "
|
---|
| 2726 | "compatiblity\n");
|
---|
| 2727 | }
|
---|
| 2728 | update_units();
|
---|
| 2729 | break;
|
---|
| 2730 | case 'v':
|
---|
| 2731 | verify();
|
---|
| 2732 | break;
|
---|
| 2733 | case 'w':
|
---|
| 2734 | write_table(); /* does not return */
|
---|
| 2735 | break;
|
---|
| 2736 | case 'y':
|
---|
| 2737 | if (LABEL_IS_SUN)
|
---|
| 2738 | sun_set_pcylcount();
|
---|
| 2739 | break;
|
---|
| 2740 | default:
|
---|
| 2741 | xmenu();
|
---|
| 2742 | }
|
---|
| 2743 | }
|
---|
| 2744 | }
|
---|
| 2745 | #endif /* ADVANCED mode */
|
---|
| 2746 |
|
---|
| 2747 | static int
|
---|
| 2748 | is_ide_cdrom_or_tape(const char *device)
|
---|
| 2749 | {
|
---|
| 2750 | FILE *procf;
|
---|
| 2751 | char buf[100];
|
---|
| 2752 | struct stat statbuf;
|
---|
| 2753 | int is_ide = 0;
|
---|
| 2754 |
|
---|
| 2755 | /* No device was given explicitly, and we are trying some
|
---|
| 2756 | likely things. But opening /dev/hdc may produce errors like
|
---|
| 2757 | "hdc: tray open or drive not ready"
|
---|
| 2758 | if it happens to be a CD-ROM drive. It even happens that
|
---|
| 2759 | the process hangs on the attempt to read a music CD.
|
---|
| 2760 | So try to be careful. This only works since 2.1.73. */
|
---|
| 2761 |
|
---|
| 2762 | if (strncmp("/dev/hd", device, 7))
|
---|
| 2763 | return 0;
|
---|
| 2764 |
|
---|
| 2765 | snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5);
|
---|
| 2766 | procf = fopen_for_read(buf);
|
---|
| 2767 | if (procf != NULL && fgets(buf, sizeof(buf), procf))
|
---|
| 2768 | is_ide = (!strncmp(buf, "cdrom", 5) ||
|
---|
| 2769 | !strncmp(buf, "tape", 4));
|
---|
| 2770 | else
|
---|
| 2771 | /* Now when this proc file does not exist, skip the
|
---|
| 2772 | device when it is read-only. */
|
---|
| 2773 | if (stat(device, &statbuf) == 0)
|
---|
| 2774 | is_ide = ((statbuf.st_mode & 0222) == 0);
|
---|
| 2775 |
|
---|
| 2776 | if (procf)
|
---|
| 2777 | fclose(procf);
|
---|
| 2778 | return is_ide;
|
---|
| 2779 | }
|
---|
| 2780 |
|
---|
| 2781 |
|
---|
| 2782 | static void
|
---|
| 2783 | open_list_and_close(const char *device, int user_specified)
|
---|
| 2784 | {
|
---|
| 2785 | int gb;
|
---|
| 2786 |
|
---|
| 2787 | disk_device = device;
|
---|
| 2788 | if (setjmp(listingbuf))
|
---|
| 2789 | return;
|
---|
| 2790 | if (!user_specified)
|
---|
| 2791 | if (is_ide_cdrom_or_tape(device))
|
---|
| 2792 | return;
|
---|
| 2793 |
|
---|
| 2794 | /* Open disk_device, save file descriptor to dev_fd */
|
---|
| 2795 | errno = 0;
|
---|
| 2796 | gb = get_boot(TRY_ONLY);
|
---|
| 2797 | if (gb > 0) { /* I/O error */
|
---|
| 2798 | /* Ignore other errors, since we try IDE
|
---|
| 2799 | and SCSI hard disks which may not be
|
---|
| 2800 | installed on the system. */
|
---|
| 2801 | if (user_specified || errno == EACCES)
|
---|
| 2802 | bb_perror_msg("can't open '%s'", device);
|
---|
| 2803 | return;
|
---|
| 2804 | }
|
---|
| 2805 |
|
---|
| 2806 | if (gb < 0) { /* no DOS signature */
|
---|
| 2807 | list_disk_geometry();
|
---|
| 2808 | if (LABEL_IS_AIX)
|
---|
| 2809 | goto ret;
|
---|
| 2810 | #if ENABLE_FEATURE_OSF_LABEL
|
---|
| 2811 | if (bsd_trydev(device) < 0)
|
---|
| 2812 | #endif
|
---|
| 2813 | printf("Disk %s doesn't contain a valid "
|
---|
| 2814 | "partition table\n", device);
|
---|
| 2815 | } else {
|
---|
| 2816 | list_table(0);
|
---|
| 2817 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 2818 | if (!LABEL_IS_SUN && g_partitions > 4) {
|
---|
| 2819 | delete_partition(ext_index);
|
---|
| 2820 | }
|
---|
| 2821 | #endif
|
---|
| 2822 | }
|
---|
| 2823 | ret:
|
---|
| 2824 | close_dev_fd();
|
---|
| 2825 | }
|
---|
| 2826 |
|
---|
| 2827 | /* for fdisk -l: try all things in /proc/partitions
|
---|
| 2828 | that look like a partition name (do not end in a digit) */
|
---|
| 2829 | static void
|
---|
| 2830 | list_devs_in_proc_partititons(void)
|
---|
| 2831 | {
|
---|
| 2832 | FILE *procpt;
|
---|
| 2833 | char line[100], ptname[100], devname[120], *s;
|
---|
| 2834 | int ma, mi, sz;
|
---|
| 2835 |
|
---|
| 2836 | procpt = fopen_or_warn("/proc/partitions", "r");
|
---|
| 2837 |
|
---|
| 2838 | while (fgets(line, sizeof(line), procpt)) {
|
---|
| 2839 | if (sscanf(line, " %u %u %u %[^\n ]",
|
---|
| 2840 | &ma, &mi, &sz, ptname) != 4)
|
---|
| 2841 | continue;
|
---|
| 2842 | for (s = ptname; *s; s++)
|
---|
| 2843 | continue;
|
---|
| 2844 | /* note: excluding '0': e.g. mmcblk0 is not a partition name! */
|
---|
| 2845 | if (s[-1] >= '1' && s[-1] <= '9')
|
---|
| 2846 | continue;
|
---|
| 2847 | sprintf(devname, "/dev/%s", ptname);
|
---|
| 2848 | open_list_and_close(devname, 0);
|
---|
| 2849 | }
|
---|
| 2850 | #if ENABLE_FEATURE_CLEAN_UP
|
---|
| 2851 | fclose(procpt);
|
---|
| 2852 | #endif
|
---|
| 2853 | }
|
---|
| 2854 |
|
---|
| 2855 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 2856 | static void
|
---|
| 2857 | unknown_command(int c)
|
---|
| 2858 | {
|
---|
| 2859 | printf("%c: unknown command\n", c);
|
---|
| 2860 | }
|
---|
| 2861 | #endif
|
---|
| 2862 |
|
---|
| 2863 | int fdisk_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 2864 | int fdisk_main(int argc UNUSED_PARAM, char **argv)
|
---|
| 2865 | {
|
---|
| 2866 | unsigned opt;
|
---|
| 2867 | /*
|
---|
| 2868 | * fdisk -v
|
---|
| 2869 | * fdisk -l [-b sectorsize] [-u] device ...
|
---|
| 2870 | * fdisk -s [partition] ...
|
---|
| 2871 | * fdisk [-b sectorsize] [-u] device
|
---|
| 2872 | *
|
---|
| 2873 | * Options -C, -H, -S set the geometry.
|
---|
| 2874 | */
|
---|
| 2875 | INIT_G();
|
---|
| 2876 |
|
---|
| 2877 | close_dev_fd(); /* needed: fd 3 must not stay closed */
|
---|
| 2878 |
|
---|
| 2879 | opt_complementary = "b+:C+:H+:S+"; /* numeric params */
|
---|
| 2880 | opt = getopt32(argv, "b:C:H:lS:u" IF_FEATURE_FDISK_BLKSIZE("s"),
|
---|
| 2881 | §or_size, &user_cylinders, &user_heads, &user_sectors);
|
---|
| 2882 | argv += optind;
|
---|
| 2883 | if (opt & OPT_b) {
|
---|
| 2884 | /* Ugly: this sector size is really per device,
|
---|
| 2885 | * so cannot be combined with multiple disks,
|
---|
| 2886 | * and the same goes for the C/H/S options.
|
---|
| 2887 | */
|
---|
| 2888 | if (sector_size < 512
|
---|
| 2889 | || sector_size > 0x10000
|
---|
| 2890 | || (sector_size & (sector_size-1)) /* not power of 2 */
|
---|
| 2891 | ) {
|
---|
| 2892 | bb_show_usage();
|
---|
| 2893 | }
|
---|
| 2894 | sector_offset = 2;
|
---|
| 2895 | user_set_sector_size = 1;
|
---|
| 2896 | }
|
---|
| 2897 | if (user_heads <= 0 || user_heads >= 256)
|
---|
| 2898 | user_heads = 0;
|
---|
| 2899 | if (user_sectors <= 0 || user_sectors >= 64)
|
---|
| 2900 | user_sectors = 0;
|
---|
| 2901 | if (opt & OPT_u)
|
---|
| 2902 | display_in_cyl_units = 0; // -u
|
---|
| 2903 |
|
---|
| 2904 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 2905 | if (opt & OPT_l) {
|
---|
| 2906 | nowarn = 1;
|
---|
| 2907 | #endif
|
---|
| 2908 | if (*argv) {
|
---|
| 2909 | listing = 1;
|
---|
| 2910 | do {
|
---|
| 2911 | open_list_and_close(*argv, 1);
|
---|
| 2912 | } while (*++argv);
|
---|
| 2913 | } else {
|
---|
| 2914 | /* we don't have device names, */
|
---|
| 2915 | /* use /proc/partitions instead */
|
---|
| 2916 | list_devs_in_proc_partititons();
|
---|
| 2917 | }
|
---|
| 2918 | return 0;
|
---|
| 2919 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 2920 | }
|
---|
| 2921 | #endif
|
---|
| 2922 |
|
---|
| 2923 | #if ENABLE_FEATURE_FDISK_BLKSIZE
|
---|
| 2924 | if (opt & OPT_s) {
|
---|
| 2925 | int j;
|
---|
| 2926 |
|
---|
| 2927 | nowarn = 1;
|
---|
| 2928 | if (!argv[0])
|
---|
| 2929 | bb_show_usage();
|
---|
| 2930 | for (j = 0; argv[j]; j++) {
|
---|
| 2931 | unsigned long long size;
|
---|
| 2932 | fd = xopen(argv[j], O_RDONLY);
|
---|
| 2933 | size = bb_BLKGETSIZE_sectors(fd) / 2;
|
---|
| 2934 | close(fd);
|
---|
| 2935 | if (argv[1])
|
---|
| 2936 | printf("%llu\n", size);
|
---|
| 2937 | else
|
---|
| 2938 | printf("%s: %llu\n", argv[j], size);
|
---|
| 2939 | }
|
---|
| 2940 | return 0;
|
---|
| 2941 | }
|
---|
| 2942 | #endif
|
---|
| 2943 |
|
---|
| 2944 | #if ENABLE_FEATURE_FDISK_WRITABLE
|
---|
| 2945 | if (!argv[0] || argv[1])
|
---|
| 2946 | bb_show_usage();
|
---|
| 2947 |
|
---|
| 2948 | disk_device = argv[0];
|
---|
| 2949 | get_boot(OPEN_MAIN);
|
---|
| 2950 |
|
---|
| 2951 | if (LABEL_IS_OSF) {
|
---|
| 2952 | /* OSF label, and no DOS label */
|
---|
| 2953 | printf("Detected an OSF/1 disklabel on %s, entering "
|
---|
| 2954 | "disklabel mode\n", disk_device);
|
---|
| 2955 | bsd_select();
|
---|
| 2956 | /*Why do we do this? It seems to be counter-intuitive*/
|
---|
| 2957 | current_label_type = LABEL_DOS;
|
---|
| 2958 | /* If we return we may want to make an empty DOS label? */
|
---|
| 2959 | }
|
---|
| 2960 |
|
---|
| 2961 | while (1) {
|
---|
| 2962 | int c;
|
---|
| 2963 | bb_putchar('\n');
|
---|
| 2964 | c = 0x20 | read_nonempty("Command (m for help): ");
|
---|
| 2965 | switch (c) {
|
---|
| 2966 | case 'a':
|
---|
| 2967 | if (LABEL_IS_DOS)
|
---|
| 2968 | toggle_active(get_partition(1, g_partitions));
|
---|
| 2969 | else if (LABEL_IS_SUN)
|
---|
| 2970 | toggle_sunflags(get_partition(1, g_partitions),
|
---|
| 2971 | 0x01);
|
---|
| 2972 | else if (LABEL_IS_SGI)
|
---|
| 2973 | sgi_set_bootpartition(
|
---|
| 2974 | get_partition(1, g_partitions));
|
---|
| 2975 | else
|
---|
| 2976 | unknown_command(c);
|
---|
| 2977 | break;
|
---|
| 2978 | case 'b':
|
---|
| 2979 | if (LABEL_IS_SGI) {
|
---|
| 2980 | printf("\nThe current boot file is: %s\n",
|
---|
| 2981 | sgi_get_bootfile());
|
---|
| 2982 | if (read_maybe_empty("Please enter the name of the "
|
---|
| 2983 | "new boot file: ") == '\n')
|
---|
| 2984 | printf("Boot file unchanged\n");
|
---|
| 2985 | else
|
---|
| 2986 | sgi_set_bootfile(line_ptr);
|
---|
| 2987 | }
|
---|
| 2988 | #if ENABLE_FEATURE_OSF_LABEL
|
---|
| 2989 | else
|
---|
| 2990 | bsd_select();
|
---|
| 2991 | #endif
|
---|
| 2992 | break;
|
---|
| 2993 | case 'c':
|
---|
| 2994 | if (LABEL_IS_DOS)
|
---|
| 2995 | toggle_dos_compatibility_flag();
|
---|
| 2996 | else if (LABEL_IS_SUN)
|
---|
| 2997 | toggle_sunflags(get_partition(1, g_partitions),
|
---|
| 2998 | 0x10);
|
---|
| 2999 | else if (LABEL_IS_SGI)
|
---|
| 3000 | sgi_set_swappartition(
|
---|
| 3001 | get_partition(1, g_partitions));
|
---|
| 3002 | else
|
---|
| 3003 | unknown_command(c);
|
---|
| 3004 | break;
|
---|
| 3005 | case 'd':
|
---|
| 3006 | {
|
---|
| 3007 | int j;
|
---|
| 3008 | /* If sgi_label then don't use get_existing_partition,
|
---|
| 3009 | let the user select a partition, since
|
---|
| 3010 | get_existing_partition() only works for Linux-like
|
---|
| 3011 | partition tables */
|
---|
| 3012 | if (!LABEL_IS_SGI) {
|
---|
| 3013 | j = get_existing_partition(1, g_partitions);
|
---|
| 3014 | } else {
|
---|
| 3015 | j = get_partition(1, g_partitions);
|
---|
| 3016 | }
|
---|
| 3017 | if (j >= 0)
|
---|
| 3018 | delete_partition(j);
|
---|
| 3019 | }
|
---|
| 3020 | break;
|
---|
| 3021 | case 'i':
|
---|
| 3022 | if (LABEL_IS_SGI)
|
---|
| 3023 | create_sgiinfo();
|
---|
| 3024 | else
|
---|
| 3025 | unknown_command(c);
|
---|
| 3026 | case 'l':
|
---|
| 3027 | list_types(get_sys_types());
|
---|
| 3028 | break;
|
---|
| 3029 | case 'm':
|
---|
| 3030 | menu();
|
---|
| 3031 | break;
|
---|
| 3032 | case 'n':
|
---|
| 3033 | new_partition();
|
---|
| 3034 | break;
|
---|
| 3035 | case 'o':
|
---|
| 3036 | create_doslabel();
|
---|
| 3037 | break;
|
---|
| 3038 | case 'p':
|
---|
| 3039 | list_table(0);
|
---|
| 3040 | break;
|
---|
| 3041 | case 'q':
|
---|
| 3042 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 3043 | close_dev_fd();
|
---|
| 3044 | bb_putchar('\n');
|
---|
| 3045 | return 0;
|
---|
| 3046 | case 's':
|
---|
| 3047 | #if ENABLE_FEATURE_SUN_LABEL
|
---|
| 3048 | create_sunlabel();
|
---|
| 3049 | #endif
|
---|
| 3050 | break;
|
---|
| 3051 | case 't':
|
---|
| 3052 | change_sysid();
|
---|
| 3053 | break;
|
---|
| 3054 | case 'u':
|
---|
| 3055 | change_units();
|
---|
| 3056 | break;
|
---|
| 3057 | case 'v':
|
---|
| 3058 | verify();
|
---|
| 3059 | break;
|
---|
| 3060 | case 'w':
|
---|
| 3061 | write_table(); /* does not return */
|
---|
| 3062 | break;
|
---|
| 3063 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 3064 | case 'x':
|
---|
| 3065 | if (LABEL_IS_SGI) {
|
---|
| 3066 | printf("\n\tSorry, no experts menu for SGI "
|
---|
| 3067 | "partition tables available\n\n");
|
---|
| 3068 | } else
|
---|
| 3069 | xselect();
|
---|
| 3070 | break;
|
---|
| 3071 | #endif
|
---|
| 3072 | default:
|
---|
| 3073 | unknown_command(c);
|
---|
| 3074 | menu();
|
---|
| 3075 | }
|
---|
| 3076 | }
|
---|
| 3077 | return 0;
|
---|
| 3078 | #endif /* FEATURE_FDISK_WRITABLE */
|
---|
| 3079 | }
|
---|