[1765] | 1 | /*
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| 2 | * Copyright (C) Andreas Neuper, Sep 1998.
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[2725] | 3 | *
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| 4 | * Licensed under GPLv2, see file LICENSE in this source tree.
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[1765] | 5 | */
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| 6 |
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[2725] | 7 | #if ENABLE_FEATURE_SGI_LABEL
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| 8 |
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| 9 | #define SGI_DEBUG 0
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| 10 |
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[1765] | 11 | #define SGI_VOLHDR 0x00
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| 12 | /* 1 and 2 were used for drive types no longer supported by SGI */
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| 13 | #define SGI_SWAP 0x03
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| 14 | /* 4 and 5 were for filesystem types SGI haven't ever supported on MIPS CPUs */
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| 15 | #define SGI_VOLUME 0x06
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| 16 | #define SGI_EFS 0x07
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| 17 | #define SGI_LVOL 0x08
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| 18 | #define SGI_RLVOL 0x09
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| 19 | #define SGI_XFS 0x0a
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| 20 | #define SGI_XFSLOG 0x0b
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| 21 | #define SGI_XLV 0x0c
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| 22 | #define SGI_XVM 0x0d
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| 23 | #define SGI_ENTIRE_DISK SGI_VOLUME
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| 24 |
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| 25 | struct device_parameter { /* 48 bytes */
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| 26 | unsigned char skew;
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| 27 | unsigned char gap1;
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| 28 | unsigned char gap2;
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| 29 | unsigned char sparecyl;
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| 30 | unsigned short pcylcount;
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| 31 | unsigned short head_vol0;
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| 32 | unsigned short ntrks; /* tracks in cyl 0 or vol 0 */
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| 33 | unsigned char cmd_tag_queue_depth;
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| 34 | unsigned char unused0;
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| 35 | unsigned short unused1;
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| 36 | unsigned short nsect; /* sectors/tracks in cyl 0 or vol 0 */
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| 37 | unsigned short bytes;
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| 38 | unsigned short ilfact;
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[2725] | 39 | unsigned int flags; /* controller flags */
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[1765] | 40 | unsigned int datarate;
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| 41 | unsigned int retries_on_error;
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| 42 | unsigned int ms_per_word;
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| 43 | unsigned short xylogics_gap1;
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| 44 | unsigned short xylogics_syncdelay;
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| 45 | unsigned short xylogics_readdelay;
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| 46 | unsigned short xylogics_gap2;
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| 47 | unsigned short xylogics_readgate;
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| 48 | unsigned short xylogics_writecont;
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| 49 | };
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| 50 |
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| 51 | /*
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| 52 | * controller flags
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| 53 | */
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| 54 | #define SECTOR_SLIP 0x01
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| 55 | #define SECTOR_FWD 0x02
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| 56 | #define TRACK_FWD 0x04
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| 57 | #define TRACK_MULTIVOL 0x08
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| 58 | #define IGNORE_ERRORS 0x10
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| 59 | #define RESEEK 0x20
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| 60 | #define ENABLE_CMDTAGQ 0x40
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| 61 |
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| 62 | typedef struct {
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| 63 | unsigned int magic; /* expect SGI_LABEL_MAGIC */
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| 64 | unsigned short boot_part; /* active boot partition */
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| 65 | unsigned short swap_part; /* active swap partition */
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| 66 | unsigned char boot_file[16]; /* name of the bootfile */
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| 67 | struct device_parameter devparam; /* 1 * 48 bytes */
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| 68 | struct volume_directory { /* 15 * 16 bytes */
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| 69 | unsigned char vol_file_name[8]; /* a character array */
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| 70 | unsigned int vol_file_start; /* number of logical block */
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| 71 | unsigned int vol_file_size; /* number of bytes */
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| 72 | } directory[15];
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[2725] | 73 | struct sgi_partinfo { /* 16 * 12 bytes */
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[1765] | 74 | unsigned int num_sectors; /* number of blocks */
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| 75 | unsigned int start_sector; /* must be cylinder aligned */
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| 76 | unsigned int id;
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| 77 | } partitions[16];
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| 78 | unsigned int csum;
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| 79 | unsigned int fillbytes;
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| 80 | } sgi_partition;
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| 81 |
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| 82 | typedef struct {
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| 83 | unsigned int magic; /* looks like a magic number */
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| 84 | unsigned int a2;
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| 85 | unsigned int a3;
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| 86 | unsigned int a4;
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| 87 | unsigned int b1;
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| 88 | unsigned short b2;
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| 89 | unsigned short b3;
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| 90 | unsigned int c[16];
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| 91 | unsigned short d[3];
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| 92 | unsigned char scsi_string[50];
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| 93 | unsigned char serial[137];
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| 94 | unsigned short check1816;
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| 95 | unsigned char installer[225];
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| 96 | } sgiinfo;
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| 97 |
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| 98 | #define SGI_LABEL_MAGIC 0x0be5a941
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| 99 | #define SGI_LABEL_MAGIC_SWAPPED 0x41a9e50b
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| 100 | #define SGI_INFO_MAGIC 0x00072959
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| 101 | #define SGI_INFO_MAGIC_SWAPPED 0x59290700
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| 102 |
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| 103 | #define SGI_SSWAP16(x) (sgi_other_endian ? fdisk_swap16(x) : (uint16_t)(x))
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| 104 | #define SGI_SSWAP32(x) (sgi_other_endian ? fdisk_swap32(x) : (uint32_t)(x))
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| 105 |
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| 106 | #define sgilabel ((sgi_partition *)MBRbuffer)
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| 107 | #define sgiparam (sgilabel->devparam)
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| 108 |
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| 109 | /*
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| 110 | *
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| 111 | * fdisksgilabel.c
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| 112 | *
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| 113 | * Copyright (C) Andreas Neuper, Sep 1998.
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| 114 | * This file may be modified and redistributed under
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| 115 | * the terms of the GNU Public License.
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| 116 | *
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| 117 | * Sat Mar 20 EST 1999 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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| 118 | * Internationalization
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| 119 | */
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| 120 |
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| 121 |
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[2725] | 122 | static smallint sgi_other_endian; /* bool */
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| 123 | static smallint sgi_volumes = 1; /* max 15 */
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[1765] | 124 |
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| 125 | /*
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| 126 | * only dealing with free blocks here
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| 127 | */
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| 128 |
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| 129 | typedef struct {
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| 130 | unsigned int first;
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| 131 | unsigned int last;
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| 132 | } freeblocks;
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| 133 | static freeblocks freelist[17]; /* 16 partitions can produce 17 vacant slots */
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| 134 |
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| 135 | static void
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| 136 | setfreelist(int i, unsigned int f, unsigned int l)
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| 137 | {
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| 138 | freelist[i].first = f;
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| 139 | freelist[i].last = l;
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| 140 | }
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| 141 |
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| 142 | static void
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| 143 | add2freelist(unsigned int f, unsigned int l)
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| 144 | {
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| 145 | int i;
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| 146 | for (i = 0; i < 17; i++)
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| 147 | if (freelist[i].last == 0)
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| 148 | break;
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| 149 | setfreelist(i, f, l);
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| 150 | }
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| 151 |
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| 152 | static void
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| 153 | clearfreelist(void)
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| 154 | {
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| 155 | int i;
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| 156 |
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| 157 | for (i = 0; i < 17; i++)
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| 158 | setfreelist(i, 0, 0);
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| 159 | }
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| 160 |
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| 161 | static unsigned int
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| 162 | isinfreelist(unsigned int b)
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| 163 | {
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| 164 | int i;
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| 165 |
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| 166 | for (i = 0; i < 17; i++)
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| 167 | if (freelist[i].first <= b && freelist[i].last >= b)
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| 168 | return freelist[i].last;
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| 169 | return 0;
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| 170 | }
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| 171 | /* return last vacant block of this stride (never 0). */
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| 172 | /* the '>=' is not quite correct, but simplifies the code */
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| 173 | /*
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| 174 | * end of free blocks section
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| 175 | */
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| 176 |
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| 177 | static const char *const sgi_sys_types[] = {
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| 178 | /* SGI_VOLHDR */ "\x00" "SGI volhdr" ,
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| 179 | /* 0x01 */ "\x01" "SGI trkrepl" ,
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| 180 | /* 0x02 */ "\x02" "SGI secrepl" ,
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| 181 | /* SGI_SWAP */ "\x03" "SGI raw" ,
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| 182 | /* 0x04 */ "\x04" "SGI bsd" ,
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| 183 | /* 0x05 */ "\x05" "SGI sysv" ,
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| 184 | /* SGI_ENTIRE_DISK */ "\x06" "SGI volume" ,
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| 185 | /* SGI_EFS */ "\x07" "SGI efs" ,
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| 186 | /* 0x08 */ "\x08" "SGI lvol" ,
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| 187 | /* 0x09 */ "\x09" "SGI rlvol" ,
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| 188 | /* SGI_XFS */ "\x0a" "SGI xfs" ,
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| 189 | /* SGI_XFSLOG */ "\x0b" "SGI xfslog" ,
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| 190 | /* SGI_XLV */ "\x0c" "SGI xlv" ,
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| 191 | /* SGI_XVM */ "\x0d" "SGI xvm" ,
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| 192 | /* LINUX_SWAP */ "\x82" "Linux swap" ,
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| 193 | /* LINUX_NATIVE */ "\x83" "Linux native",
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| 194 | /* LINUX_LVM */ "\x8d" "Linux LVM" ,
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| 195 | /* LINUX_RAID */ "\xfd" "Linux RAID" ,
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| 196 | NULL
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| 197 | };
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| 198 |
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| 199 |
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| 200 | static int
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| 201 | sgi_get_nsect(void)
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| 202 | {
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| 203 | return SGI_SSWAP16(sgilabel->devparam.nsect);
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| 204 | }
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| 205 |
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| 206 | static int
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| 207 | sgi_get_ntrks(void)
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| 208 | {
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| 209 | return SGI_SSWAP16(sgilabel->devparam.ntrks);
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| 210 | }
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| 211 |
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| 212 | static unsigned int
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| 213 | two_s_complement_32bit_sum(unsigned int* base, int size /* in bytes */)
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| 214 | {
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| 215 | int i = 0;
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| 216 | unsigned int sum = 0;
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| 217 |
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| 218 | size /= sizeof(unsigned int);
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| 219 | for (i = 0; i < size; i++)
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| 220 | sum -= SGI_SSWAP32(base[i]);
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| 221 | return sum;
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| 222 | }
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| 223 |
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| 224 | void BUG_bad_sgi_partition_size(void);
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| 225 |
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| 226 | static int
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| 227 | check_sgi_label(void)
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| 228 | {
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| 229 | if (sizeof(sgi_partition) > 512) {
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| 230 | /* According to MIPS Computer Systems, Inc the label
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| 231 | * must not contain more than 512 bytes */
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| 232 | BUG_bad_sgi_partition_size();
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| 233 | }
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| 234 |
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| 235 | if (sgilabel->magic != SGI_LABEL_MAGIC
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| 236 | && sgilabel->magic != SGI_LABEL_MAGIC_SWAPPED
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| 237 | ) {
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[2725] | 238 | current_label_type = LABEL_DOS;
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[1765] | 239 | return 0;
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| 240 | }
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| 241 |
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| 242 | sgi_other_endian = (sgilabel->magic == SGI_LABEL_MAGIC_SWAPPED);
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| 243 | /*
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| 244 | * test for correct checksum
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| 245 | */
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| 246 | if (two_s_complement_32bit_sum((unsigned int*)sgilabel,
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| 247 | sizeof(*sgilabel))) {
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| 248 | printf("Detected sgi disklabel with wrong checksum\n");
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| 249 | }
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| 250 | update_units();
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[2725] | 251 | current_label_type = LABEL_SGI;
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| 252 | g_partitions = 16;
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[1765] | 253 | sgi_volumes = 15;
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| 254 | return 1;
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| 255 | }
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| 256 |
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| 257 | static unsigned int
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| 258 | sgi_get_start_sector(int i)
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| 259 | {
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| 260 | return SGI_SSWAP32(sgilabel->partitions[i].start_sector);
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| 261 | }
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| 262 |
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| 263 | static unsigned int
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| 264 | sgi_get_num_sectors(int i)
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| 265 | {
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| 266 | return SGI_SSWAP32(sgilabel->partitions[i].num_sectors);
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| 267 | }
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| 268 |
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| 269 | static int
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| 270 | sgi_get_sysid(int i)
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| 271 | {
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| 272 | return SGI_SSWAP32(sgilabel->partitions[i].id);
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| 273 | }
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| 274 |
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| 275 | static int
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| 276 | sgi_get_bootpartition(void)
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| 277 | {
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| 278 | return SGI_SSWAP16(sgilabel->boot_part);
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| 279 | }
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| 280 |
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| 281 | static int
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| 282 | sgi_get_swappartition(void)
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| 283 | {
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| 284 | return SGI_SSWAP16(sgilabel->swap_part);
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| 285 | }
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| 286 |
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| 287 | static void
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| 288 | sgi_list_table(int xtra)
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| 289 | {
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| 290 | int i, w, wd;
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| 291 | int kpi = 0; /* kernel partition ID */
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| 292 |
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| 293 | if (xtra) {
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[2725] | 294 | printf("\nDisk %s (SGI disk label): %u heads, %u sectors\n"
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| 295 | "%u cylinders, %u physical cylinders\n"
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| 296 | "%u extra sects/cyl, interleave %u:1\n"
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[1765] | 297 | "%s\n"
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[2725] | 298 | "Units = %s of %u * 512 bytes\n\n",
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| 299 | disk_device, g_heads, g_sectors, g_cylinders,
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[1765] | 300 | SGI_SSWAP16(sgiparam.pcylcount),
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| 301 | SGI_SSWAP16(sgiparam.sparecyl),
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| 302 | SGI_SSWAP16(sgiparam.ilfact),
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| 303 | (char *)sgilabel,
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| 304 | str_units(PLURAL), units_per_sector);
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| 305 | } else {
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| 306 | printf("\nDisk %s (SGI disk label): "
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[2725] | 307 | "%u heads, %u sectors, %u cylinders\n"
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| 308 | "Units = %s of %u * 512 bytes\n\n",
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| 309 | disk_device, g_heads, g_sectors, g_cylinders,
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[1765] | 310 | str_units(PLURAL), units_per_sector );
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| 311 | }
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| 312 |
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| 313 | w = strlen(disk_device);
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| 314 | wd = sizeof("Device") - 1;
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| 315 | if (w < wd)
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| 316 | w = wd;
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| 317 |
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| 318 | printf("----- partitions -----\n"
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| 319 | "Pt# %*s Info Start End Sectors Id System\n",
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| 320 | w + 2, "Device");
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[2725] | 321 | for (i = 0; i < g_partitions; i++) {
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| 322 | if (sgi_get_num_sectors(i) || SGI_DEBUG) {
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[1765] | 323 | uint32_t start = sgi_get_start_sector(i);
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| 324 | uint32_t len = sgi_get_num_sectors(i);
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| 325 | kpi++; /* only count nonempty partitions */
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| 326 | printf(
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[2725] | 327 | "%2u: %s %4s %9lu %9lu %9lu %2x %s\n",
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[1765] | 328 | /* fdisk part number */ i+1,
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| 329 | /* device */ partname(disk_device, kpi, w+3),
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| 330 | /* flags */ (sgi_get_swappartition() == i) ? "swap" :
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| 331 | /* flags */ (sgi_get_bootpartition() == i) ? "boot" : " ",
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| 332 | /* start */ (long) scround(start),
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| 333 | /* end */ (long) scround(start+len)-1,
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| 334 | /* no odd flag on end */(long) len,
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| 335 | /* type id */ sgi_get_sysid(i),
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| 336 | /* type name */ partition_type(sgi_get_sysid(i)));
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| 337 | }
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| 338 | }
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| 339 | printf("----- Bootinfo -----\nBootfile: %s\n"
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| 340 | "----- Directory Entries -----\n",
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| 341 | sgilabel->boot_file);
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| 342 | for (i = 0; i < sgi_volumes; i++) {
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| 343 | if (sgilabel->directory[i].vol_file_size) {
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| 344 | uint32_t start = SGI_SSWAP32(sgilabel->directory[i].vol_file_start);
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| 345 | uint32_t len = SGI_SSWAP32(sgilabel->directory[i].vol_file_size);
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| 346 | unsigned char *name = sgilabel->directory[i].vol_file_name;
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| 347 |
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[2725] | 348 | printf("%2u: %-10s sector%5u size%8u\n",
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[1765] | 349 | i, (char*)name, (unsigned int) start, (unsigned int) len);
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| 350 | }
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| 351 | }
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| 352 | }
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| 353 |
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| 354 | static void
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| 355 | sgi_set_bootpartition(int i)
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| 356 | {
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| 357 | sgilabel->boot_part = SGI_SSWAP16(((short)i));
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| 358 | }
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| 359 |
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| 360 | static unsigned int
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| 361 | sgi_get_lastblock(void)
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| 362 | {
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[2725] | 363 | return g_heads * g_sectors * g_cylinders;
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[1765] | 364 | }
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| 365 |
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| 366 | static void
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| 367 | sgi_set_swappartition(int i)
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| 368 | {
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| 369 | sgilabel->swap_part = SGI_SSWAP16(((short)i));
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| 370 | }
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| 371 |
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| 372 | static int
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| 373 | sgi_check_bootfile(const char* aFile)
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| 374 | {
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| 375 | if (strlen(aFile) < 3) /* "/a\n" is minimum */ {
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| 376 | printf("\nInvalid Bootfile!\n"
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| 377 | "\tThe bootfile must be an absolute non-zero pathname,\n"
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| 378 | "\te.g. \"/unix\" or \"/unix.save\".\n");
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| 379 | return 0;
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| 380 | }
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| 381 | if (strlen(aFile) > 16) {
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| 382 | printf("\nName of Bootfile too long (>16 bytes)\n");
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| 383 | return 0;
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| 384 | }
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| 385 | if (aFile[0] != '/') {
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| 386 | printf("\nBootfile must have a fully qualified pathname\n");
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| 387 | return 0;
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| 388 | }
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| 389 | if (strncmp(aFile, (char*)sgilabel->boot_file, 16)) {
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| 390 | printf("\nBe aware, that the bootfile is not checked for existence.\n"
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| 391 | "\tSGI's default is \"/unix\" and for backup \"/unix.save\".\n");
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| 392 | /* filename is correct and did change */
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| 393 | return 1;
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| 394 | }
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| 395 | return 0; /* filename did not change */
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| 396 | }
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| 397 |
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| 398 | static const char *
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| 399 | sgi_get_bootfile(void)
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| 400 | {
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| 401 | return (char*)sgilabel->boot_file;
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| 402 | }
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| 403 |
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| 404 | static void
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| 405 | sgi_set_bootfile(const char* aFile)
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| 406 | {
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| 407 | int i = 0;
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| 408 |
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| 409 | if (sgi_check_bootfile(aFile)) {
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| 410 | while (i < 16) {
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| 411 | if ((aFile[i] != '\n') /* in principle caught again by next line */
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| 412 | && (strlen(aFile) > i))
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| 413 | sgilabel->boot_file[i] = aFile[i];
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| 414 | else
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| 415 | sgilabel->boot_file[i] = 0;
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| 416 | i++;
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| 417 | }
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| 418 | printf("\n\tBootfile is changed to \"%s\"\n", sgilabel->boot_file);
|
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| 419 | }
|
---|
| 420 | }
|
---|
| 421 |
|
---|
| 422 | static void
|
---|
| 423 | create_sgiinfo(void)
|
---|
| 424 | {
|
---|
| 425 | /* I keep SGI's habit to write the sgilabel to the second block */
|
---|
| 426 | sgilabel->directory[0].vol_file_start = SGI_SSWAP32(2);
|
---|
| 427 | sgilabel->directory[0].vol_file_size = SGI_SSWAP32(sizeof(sgiinfo));
|
---|
| 428 | strncpy((char*)sgilabel->directory[0].vol_file_name, "sgilabel", 8);
|
---|
| 429 | }
|
---|
| 430 |
|
---|
| 431 | static sgiinfo *fill_sgiinfo(void);
|
---|
| 432 |
|
---|
| 433 | static void
|
---|
| 434 | sgi_write_table(void)
|
---|
| 435 | {
|
---|
| 436 | sgilabel->csum = 0;
|
---|
| 437 | sgilabel->csum = SGI_SSWAP32(two_s_complement_32bit_sum(
|
---|
| 438 | (unsigned int*)sgilabel, sizeof(*sgilabel)));
|
---|
| 439 | assert(two_s_complement_32bit_sum(
|
---|
| 440 | (unsigned int*)sgilabel, sizeof(*sgilabel)) == 0);
|
---|
| 441 |
|
---|
[2725] | 442 | write_sector(0, sgilabel);
|
---|
[3621] | 443 | if (is_prefixed_with((char*)sgilabel->directory[0].vol_file_name, "sgilabel")) {
|
---|
[1765] | 444 | /*
|
---|
| 445 | * keep this habit of first writing the "sgilabel".
|
---|
| 446 | * I never tested whether it works without (AN 981002).
|
---|
| 447 | */
|
---|
| 448 | sgiinfo *info = fill_sgiinfo();
|
---|
| 449 | int infostartblock = SGI_SSWAP32(sgilabel->directory[0].vol_file_start);
|
---|
[2725] | 450 | write_sector(infostartblock, info);
|
---|
[1765] | 451 | free(info);
|
---|
| 452 | }
|
---|
| 453 | }
|
---|
| 454 |
|
---|
| 455 | static int
|
---|
| 456 | compare_start(int *x, int *y)
|
---|
| 457 | {
|
---|
| 458 | /*
|
---|
| 459 | * sort according to start sectors
|
---|
| 460 | * and prefers largest partition:
|
---|
| 461 | * entry zero is entire disk entry
|
---|
| 462 | */
|
---|
| 463 | unsigned int i = *x;
|
---|
| 464 | unsigned int j = *y;
|
---|
| 465 | unsigned int a = sgi_get_start_sector(i);
|
---|
| 466 | unsigned int b = sgi_get_start_sector(j);
|
---|
| 467 | unsigned int c = sgi_get_num_sectors(i);
|
---|
| 468 | unsigned int d = sgi_get_num_sectors(j);
|
---|
| 469 |
|
---|
| 470 | if (a == b)
|
---|
| 471 | return (d > c) ? 1 : (d == c) ? 0 : -1;
|
---|
| 472 | return (a > b) ? 1 : -1;
|
---|
| 473 | }
|
---|
| 474 |
|
---|
| 475 |
|
---|
| 476 | static int
|
---|
| 477 | verify_sgi(int verbose)
|
---|
| 478 | {
|
---|
| 479 | int Index[16]; /* list of valid partitions */
|
---|
| 480 | int sortcount = 0; /* number of used partitions, i.e. non-zero lengths */
|
---|
| 481 | int entire = 0, i = 0;
|
---|
| 482 | unsigned int start = 0;
|
---|
| 483 | long long gap = 0; /* count unused blocks */
|
---|
| 484 | unsigned int lastblock = sgi_get_lastblock();
|
---|
| 485 |
|
---|
| 486 | clearfreelist();
|
---|
| 487 | for (i = 0; i < 16; i++) {
|
---|
| 488 | if (sgi_get_num_sectors(i) != 0) {
|
---|
| 489 | Index[sortcount++] = i;
|
---|
| 490 | if (sgi_get_sysid(i) == SGI_ENTIRE_DISK) {
|
---|
| 491 | if (entire++ == 1) {
|
---|
| 492 | if (verbose)
|
---|
| 493 | printf("More than one entire disk entry present\n");
|
---|
| 494 | }
|
---|
| 495 | }
|
---|
| 496 | }
|
---|
| 497 | }
|
---|
| 498 | if (sortcount == 0) {
|
---|
| 499 | if (verbose)
|
---|
| 500 | printf("No partitions defined\n");
|
---|
| 501 | return (lastblock > 0) ? 1 : (lastblock == 0) ? 0 : -1;
|
---|
| 502 | }
|
---|
| 503 | qsort(Index, sortcount, sizeof(Index[0]), (void*)compare_start);
|
---|
| 504 | if (sgi_get_sysid(Index[0]) == SGI_ENTIRE_DISK) {
|
---|
| 505 | if ((Index[0] != 10) && verbose)
|
---|
| 506 | printf("IRIX likes when Partition 11 covers the entire disk\n");
|
---|
[3621] | 507 | if ((sgi_get_start_sector(Index[0]) != 0) && verbose) {
|
---|
[1765] | 508 | printf("The entire disk partition should start "
|
---|
| 509 | "at block 0,\n"
|
---|
[2725] | 510 | "not at diskblock %u\n",
|
---|
[1765] | 511 | sgi_get_start_sector(Index[0]));
|
---|
[3621] | 512 | }
|
---|
| 513 | if (SGI_DEBUG) { /* I do not understand how some disks fulfil it */
|
---|
[1765] | 514 | if ((sgi_get_num_sectors(Index[0]) != lastblock) && verbose)
|
---|
[2725] | 515 | printf("The entire disk partition is only %u diskblock large,\n"
|
---|
| 516 | "but the disk is %u diskblocks long\n",
|
---|
[1765] | 517 | sgi_get_num_sectors(Index[0]), lastblock);
|
---|
| 518 | lastblock = sgi_get_num_sectors(Index[0]);
|
---|
[3621] | 519 | }
|
---|
[1765] | 520 | } else {
|
---|
| 521 | if (verbose)
|
---|
| 522 | printf("One Partition (#11) should cover the entire disk\n");
|
---|
[2725] | 523 | if (SGI_DEBUG > 2)
|
---|
| 524 | printf("sysid=%u\tpartition=%u\n",
|
---|
[1765] | 525 | sgi_get_sysid(Index[0]), Index[0]+1);
|
---|
| 526 | }
|
---|
| 527 | for (i = 1, start = 0; i < sortcount; i++) {
|
---|
| 528 | int cylsize = sgi_get_nsect() * sgi_get_ntrks();
|
---|
| 529 |
|
---|
| 530 | if ((sgi_get_start_sector(Index[i]) % cylsize) != 0) {
|
---|
[2725] | 531 | if (SGI_DEBUG) /* I do not understand how some disks fulfil it */
|
---|
[1765] | 532 | if (verbose)
|
---|
[2725] | 533 | printf("Partition %u does not start on cylinder boundary\n",
|
---|
[1765] | 534 | Index[i]+1);
|
---|
| 535 | }
|
---|
| 536 | if (sgi_get_num_sectors(Index[i]) % cylsize != 0) {
|
---|
[2725] | 537 | if (SGI_DEBUG) /* I do not understand how some disks fulfil it */
|
---|
[1765] | 538 | if (verbose)
|
---|
[2725] | 539 | printf("Partition %u does not end on cylinder boundary\n",
|
---|
[1765] | 540 | Index[i]+1);
|
---|
| 541 | }
|
---|
| 542 | /* We cannot handle several "entire disk" entries. */
|
---|
| 543 | if (sgi_get_sysid(Index[i]) == SGI_ENTIRE_DISK) continue;
|
---|
| 544 | if (start > sgi_get_start_sector(Index[i])) {
|
---|
| 545 | if (verbose)
|
---|
[2725] | 546 | printf("Partitions %u and %u overlap by %u sectors\n",
|
---|
[1765] | 547 | Index[i-1]+1, Index[i]+1,
|
---|
| 548 | start - sgi_get_start_sector(Index[i]));
|
---|
| 549 | if (gap > 0) gap = -gap;
|
---|
| 550 | if (gap == 0) gap = -1;
|
---|
| 551 | }
|
---|
| 552 | if (start < sgi_get_start_sector(Index[i])) {
|
---|
| 553 | if (verbose)
|
---|
[2725] | 554 | printf("Unused gap of %u sectors - sectors %u-%u\n",
|
---|
[1765] | 555 | sgi_get_start_sector(Index[i]) - start,
|
---|
| 556 | start, sgi_get_start_sector(Index[i])-1);
|
---|
| 557 | gap += sgi_get_start_sector(Index[i]) - start;
|
---|
| 558 | add2freelist(start, sgi_get_start_sector(Index[i]));
|
---|
| 559 | }
|
---|
| 560 | start = sgi_get_start_sector(Index[i])
|
---|
| 561 | + sgi_get_num_sectors(Index[i]);
|
---|
[2725] | 562 | if (SGI_DEBUG > 1) {
|
---|
[1765] | 563 | if (verbose)
|
---|
[2725] | 564 | printf("%2u:%12u\t%12u\t%12u\n", Index[i],
|
---|
[1765] | 565 | sgi_get_start_sector(Index[i]),
|
---|
| 566 | sgi_get_num_sectors(Index[i]),
|
---|
| 567 | sgi_get_sysid(Index[i]));
|
---|
| 568 | }
|
---|
| 569 | }
|
---|
| 570 | if (start < lastblock) {
|
---|
| 571 | if (verbose)
|
---|
[2725] | 572 | printf("Unused gap of %u sectors - sectors %u-%u\n",
|
---|
[1765] | 573 | lastblock - start, start, lastblock-1);
|
---|
| 574 | gap += lastblock - start;
|
---|
| 575 | add2freelist(start, lastblock);
|
---|
| 576 | }
|
---|
| 577 | /*
|
---|
| 578 | * Done with arithmetics
|
---|
| 579 | * Go for details now
|
---|
| 580 | */
|
---|
| 581 | if (verbose) {
|
---|
| 582 | if (!sgi_get_num_sectors(sgi_get_bootpartition())) {
|
---|
| 583 | printf("\nThe boot partition does not exist\n");
|
---|
| 584 | }
|
---|
| 585 | if (!sgi_get_num_sectors(sgi_get_swappartition())) {
|
---|
| 586 | printf("\nThe swap partition does not exist\n");
|
---|
| 587 | } else {
|
---|
| 588 | if ((sgi_get_sysid(sgi_get_swappartition()) != SGI_SWAP)
|
---|
| 589 | && (sgi_get_sysid(sgi_get_swappartition()) != LINUX_SWAP))
|
---|
| 590 | printf("\nThe swap partition has no swap type\n");
|
---|
| 591 | }
|
---|
| 592 | if (sgi_check_bootfile("/unix"))
|
---|
| 593 | printf("\tYou have chosen an unusual boot file name\n");
|
---|
| 594 | }
|
---|
| 595 | return (gap > 0) ? 1 : (gap == 0) ? 0 : -1;
|
---|
| 596 | }
|
---|
| 597 |
|
---|
| 598 | static int
|
---|
| 599 | sgi_gaps(void)
|
---|
| 600 | {
|
---|
| 601 | /*
|
---|
| 602 | * returned value is:
|
---|
| 603 | * = 0 : disk is properly filled to the rim
|
---|
| 604 | * < 0 : there is an overlap
|
---|
| 605 | * > 0 : there is still some vacant space
|
---|
| 606 | */
|
---|
| 607 | return verify_sgi(0);
|
---|
| 608 | }
|
---|
| 609 |
|
---|
| 610 | static void
|
---|
| 611 | sgi_change_sysid(int i, int sys)
|
---|
| 612 | {
|
---|
| 613 | if (sgi_get_num_sectors(i) == 0) { /* caught already before, ... */
|
---|
| 614 | printf("Sorry you may change the Tag of non-empty partitions\n");
|
---|
| 615 | return;
|
---|
| 616 | }
|
---|
| 617 | if ((sys != SGI_ENTIRE_DISK) && (sys != SGI_VOLHDR)
|
---|
| 618 | && (sgi_get_start_sector(i) < 1)
|
---|
| 619 | ) {
|
---|
| 620 | read_maybe_empty(
|
---|
| 621 | "It is highly recommended that the partition at offset 0\n"
|
---|
| 622 | "is of type \"SGI volhdr\", the IRIX system will rely on it to\n"
|
---|
| 623 | "retrieve from its directory standalone tools like sash and fx.\n"
|
---|
| 624 | "Only the \"SGI volume\" entire disk section may violate this.\n"
|
---|
| 625 | "Type YES if you are sure about tagging this partition differently.\n");
|
---|
| 626 | if (strcmp(line_ptr, "YES\n") != 0)
|
---|
| 627 | return;
|
---|
| 628 | }
|
---|
| 629 | sgilabel->partitions[i].id = SGI_SSWAP32(sys);
|
---|
| 630 | }
|
---|
| 631 |
|
---|
| 632 | /* returns partition index of first entry marked as entire disk */
|
---|
| 633 | static int
|
---|
| 634 | sgi_entire(void)
|
---|
| 635 | {
|
---|
| 636 | int i;
|
---|
| 637 |
|
---|
| 638 | for (i = 0; i < 16; i++)
|
---|
| 639 | if (sgi_get_sysid(i) == SGI_VOLUME)
|
---|
| 640 | return i;
|
---|
| 641 | return -1;
|
---|
| 642 | }
|
---|
| 643 |
|
---|
| 644 | static void
|
---|
| 645 | sgi_set_partition(int i, unsigned int start, unsigned int length, int sys)
|
---|
| 646 | {
|
---|
| 647 | sgilabel->partitions[i].id = SGI_SSWAP32(sys);
|
---|
| 648 | sgilabel->partitions[i].num_sectors = SGI_SSWAP32(length);
|
---|
| 649 | sgilabel->partitions[i].start_sector = SGI_SSWAP32(start);
|
---|
| 650 | set_changed(i);
|
---|
| 651 | if (sgi_gaps() < 0) /* rebuild freelist */
|
---|
| 652 | printf("Partition overlap detected\n");
|
---|
| 653 | }
|
---|
| 654 |
|
---|
| 655 | static void
|
---|
| 656 | sgi_set_entire(void)
|
---|
| 657 | {
|
---|
| 658 | int n;
|
---|
| 659 |
|
---|
[2725] | 660 | for (n = 10; n < g_partitions; n++) {
|
---|
[1765] | 661 | if (!sgi_get_num_sectors(n) ) {
|
---|
| 662 | sgi_set_partition(n, 0, sgi_get_lastblock(), SGI_VOLUME);
|
---|
| 663 | break;
|
---|
| 664 | }
|
---|
| 665 | }
|
---|
| 666 | }
|
---|
| 667 |
|
---|
| 668 | static void
|
---|
| 669 | sgi_set_volhdr(void)
|
---|
| 670 | {
|
---|
| 671 | int n;
|
---|
| 672 |
|
---|
[2725] | 673 | for (n = 8; n < g_partitions; n++) {
|
---|
[3621] | 674 | if (!sgi_get_num_sectors(n)) {
|
---|
| 675 | /*
|
---|
| 676 | * 5 cylinders is an arbitrary value I like
|
---|
| 677 | * IRIX 5.3 stored files in the volume header
|
---|
| 678 | * (like sash, symmon, fx, ide) with ca. 3200
|
---|
| 679 | * sectors.
|
---|
| 680 | */
|
---|
| 681 | if (g_heads * g_sectors * 5 < sgi_get_lastblock()) {
|
---|
| 682 | sgi_set_partition(n, 0, g_heads * g_sectors * 5, SGI_VOLHDR);
|
---|
| 683 | break;
|
---|
| 684 | }
|
---|
[1765] | 685 | }
|
---|
| 686 | }
|
---|
| 687 | }
|
---|
| 688 |
|
---|
| 689 | static void
|
---|
| 690 | sgi_delete_partition(int i)
|
---|
| 691 | {
|
---|
| 692 | sgi_set_partition(i, 0, 0, 0);
|
---|
| 693 | }
|
---|
| 694 |
|
---|
| 695 | static void
|
---|
| 696 | sgi_add_partition(int n, int sys)
|
---|
| 697 | {
|
---|
| 698 | char mesg[256];
|
---|
| 699 | unsigned int first = 0, last = 0;
|
---|
| 700 |
|
---|
| 701 | if (n == 10) {
|
---|
| 702 | sys = SGI_VOLUME;
|
---|
| 703 | } else if (n == 8) {
|
---|
| 704 | sys = 0;
|
---|
| 705 | }
|
---|
| 706 | if (sgi_get_num_sectors(n)) {
|
---|
| 707 | printf(msg_part_already_defined, n + 1);
|
---|
| 708 | return;
|
---|
| 709 | }
|
---|
| 710 | if ((sgi_entire() == -1) && (sys != SGI_VOLUME)) {
|
---|
| 711 | printf("Attempting to generate entire disk entry automatically\n");
|
---|
| 712 | sgi_set_entire();
|
---|
| 713 | sgi_set_volhdr();
|
---|
| 714 | }
|
---|
| 715 | if ((sgi_gaps() == 0) && (sys != SGI_VOLUME)) {
|
---|
| 716 | printf("The entire disk is already covered with partitions\n");
|
---|
| 717 | return;
|
---|
| 718 | }
|
---|
| 719 | if (sgi_gaps() < 0) {
|
---|
| 720 | printf("You got a partition overlap on the disk. Fix it first!\n");
|
---|
| 721 | return;
|
---|
| 722 | }
|
---|
| 723 | snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR));
|
---|
| 724 | while (1) {
|
---|
| 725 | if (sys == SGI_VOLUME) {
|
---|
| 726 | last = sgi_get_lastblock();
|
---|
| 727 | first = read_int(0, 0, last-1, 0, mesg);
|
---|
| 728 | if (first != 0) {
|
---|
| 729 | printf("It is highly recommended that eleventh partition\n"
|
---|
| 730 | "covers the entire disk and is of type 'SGI volume'\n");
|
---|
| 731 | }
|
---|
| 732 | } else {
|
---|
| 733 | first = freelist[0].first;
|
---|
| 734 | last = freelist[0].last;
|
---|
| 735 | first = read_int(scround(first), scround(first), scround(last)-1,
|
---|
| 736 | 0, mesg);
|
---|
| 737 | }
|
---|
| 738 | if (display_in_cyl_units)
|
---|
| 739 | first *= units_per_sector;
|
---|
| 740 | else
|
---|
| 741 | first = first; /* align to cylinder if you know how ... */
|
---|
| 742 | if (!last )
|
---|
| 743 | last = isinfreelist(first);
|
---|
| 744 | if (last != 0)
|
---|
| 745 | break;
|
---|
| 746 | printf("You will get a partition overlap on the disk. "
|
---|
| 747 | "Fix it first!\n");
|
---|
| 748 | }
|
---|
| 749 | snprintf(mesg, sizeof(mesg), " Last %s", str_units(SINGULAR));
|
---|
| 750 | last = read_int(scround(first), scround(last)-1, scround(last)-1,
|
---|
| 751 | scround(first), mesg)+1;
|
---|
| 752 | if (display_in_cyl_units)
|
---|
| 753 | last *= units_per_sector;
|
---|
| 754 | else
|
---|
| 755 | last = last; /* align to cylinder if You know how ... */
|
---|
| 756 | if ( (sys == SGI_VOLUME) && (first != 0 || last != sgi_get_lastblock() ) )
|
---|
| 757 | printf("It is highly recommended that eleventh partition\n"
|
---|
| 758 | "covers the entire disk and is of type 'SGI volume'\n");
|
---|
| 759 | sgi_set_partition(n, first, last-first, sys);
|
---|
| 760 | }
|
---|
| 761 |
|
---|
| 762 | #if ENABLE_FEATURE_FDISK_ADVANCED
|
---|
| 763 | static void
|
---|
| 764 | create_sgilabel(void)
|
---|
| 765 | {
|
---|
| 766 | struct hd_geometry geometry;
|
---|
| 767 | struct {
|
---|
| 768 | unsigned int start;
|
---|
| 769 | unsigned int nsect;
|
---|
| 770 | int sysid;
|
---|
| 771 | } old[4];
|
---|
| 772 | int i = 0;
|
---|
| 773 | long longsectors; /* the number of sectors on the device */
|
---|
| 774 | int res; /* the result from the ioctl */
|
---|
| 775 | int sec_fac; /* the sector factor */
|
---|
| 776 |
|
---|
| 777 | sec_fac = sector_size / 512; /* determine the sector factor */
|
---|
| 778 |
|
---|
| 779 | printf(msg_building_new_label, "SGI disklabel");
|
---|
| 780 |
|
---|
[2725] | 781 | sgi_other_endian = BB_LITTLE_ENDIAN;
|
---|
| 782 | res = ioctl(dev_fd, BLKGETSIZE, &longsectors);
|
---|
| 783 | if (!ioctl(dev_fd, HDIO_GETGEO, &geometry)) {
|
---|
| 784 | g_heads = geometry.heads;
|
---|
| 785 | g_sectors = geometry.sectors;
|
---|
[1765] | 786 | if (res == 0) {
|
---|
| 787 | /* the get device size ioctl was successful */
|
---|
[2725] | 788 | g_cylinders = longsectors / (g_heads * g_sectors);
|
---|
| 789 | g_cylinders /= sec_fac;
|
---|
[1765] | 790 | } else {
|
---|
| 791 | /* otherwise print error and use truncated version */
|
---|
[2725] | 792 | g_cylinders = geometry.cylinders;
|
---|
[1765] | 793 | printf(
|
---|
[2725] | 794 | "Warning: BLKGETSIZE ioctl failed on %s. Using geometry cylinder value of %u.\n"
|
---|
| 795 | "This value may be truncated for devices > 33.8 GB.\n", disk_device, g_cylinders);
|
---|
[1765] | 796 | }
|
---|
| 797 | }
|
---|
| 798 | for (i = 0; i < 4; i++) {
|
---|
| 799 | old[i].sysid = 0;
|
---|
| 800 | if (valid_part_table_flag(MBRbuffer)) {
|
---|
| 801 | if (get_part_table(i)->sys_ind) {
|
---|
| 802 | old[i].sysid = get_part_table(i)->sys_ind;
|
---|
| 803 | old[i].start = get_start_sect(get_part_table(i));
|
---|
| 804 | old[i].nsect = get_nr_sects(get_part_table(i));
|
---|
[2725] | 805 | printf("Trying to keep parameters of partition %u\n", i);
|
---|
| 806 | if (SGI_DEBUG)
|
---|
| 807 | printf("ID=%02x\tSTART=%u\tLENGTH=%u\n",
|
---|
[1765] | 808 | old[i].sysid, old[i].start, old[i].nsect);
|
---|
| 809 | }
|
---|
| 810 | }
|
---|
| 811 | }
|
---|
| 812 |
|
---|
| 813 | memset(MBRbuffer, 0, sizeof(MBRbuffer));
|
---|
| 814 | /* fields with '//' are already zeroed out by memset above */
|
---|
| 815 |
|
---|
| 816 | sgilabel->magic = SGI_SSWAP32(SGI_LABEL_MAGIC);
|
---|
| 817 | //sgilabel->boot_part = SGI_SSWAP16(0);
|
---|
| 818 | sgilabel->swap_part = SGI_SSWAP16(1);
|
---|
| 819 |
|
---|
| 820 | //memset(sgilabel->boot_file, 0, 16);
|
---|
| 821 | strcpy((char*)sgilabel->boot_file, "/unix"); /* sizeof(sgilabel->boot_file) == 16 > 6 */
|
---|
| 822 |
|
---|
| 823 | //sgilabel->devparam.skew = (0);
|
---|
| 824 | //sgilabel->devparam.gap1 = (0);
|
---|
| 825 | //sgilabel->devparam.gap2 = (0);
|
---|
| 826 | //sgilabel->devparam.sparecyl = (0);
|
---|
| 827 | sgilabel->devparam.pcylcount = SGI_SSWAP16(geometry.cylinders);
|
---|
| 828 | //sgilabel->devparam.head_vol0 = SGI_SSWAP16(0);
|
---|
| 829 | /* tracks/cylinder (heads) */
|
---|
| 830 | sgilabel->devparam.ntrks = SGI_SSWAP16(geometry.heads);
|
---|
| 831 | //sgilabel->devparam.cmd_tag_queue_depth = (0);
|
---|
| 832 | //sgilabel->devparam.unused0 = (0);
|
---|
| 833 | //sgilabel->devparam.unused1 = SGI_SSWAP16(0);
|
---|
| 834 | /* sectors/track */
|
---|
| 835 | sgilabel->devparam.nsect = SGI_SSWAP16(geometry.sectors);
|
---|
| 836 | sgilabel->devparam.bytes = SGI_SSWAP16(512);
|
---|
| 837 | sgilabel->devparam.ilfact = SGI_SSWAP16(1);
|
---|
| 838 | sgilabel->devparam.flags = SGI_SSWAP32(TRACK_FWD|
|
---|
| 839 | IGNORE_ERRORS|RESEEK);
|
---|
| 840 | //sgilabel->devparam.datarate = SGI_SSWAP32(0);
|
---|
| 841 | sgilabel->devparam.retries_on_error = SGI_SSWAP32(1);
|
---|
| 842 | //sgilabel->devparam.ms_per_word = SGI_SSWAP32(0);
|
---|
| 843 | //sgilabel->devparam.xylogics_gap1 = SGI_SSWAP16(0);
|
---|
| 844 | //sgilabel->devparam.xylogics_syncdelay = SGI_SSWAP16(0);
|
---|
| 845 | //sgilabel->devparam.xylogics_readdelay = SGI_SSWAP16(0);
|
---|
| 846 | //sgilabel->devparam.xylogics_gap2 = SGI_SSWAP16(0);
|
---|
| 847 | //sgilabel->devparam.xylogics_readgate = SGI_SSWAP16(0);
|
---|
| 848 | //sgilabel->devparam.xylogics_writecont = SGI_SSWAP16(0);
|
---|
| 849 | //memset( &(sgilabel->directory), 0, sizeof(struct volume_directory)*15 );
|
---|
| 850 | //memset( &(sgilabel->partitions), 0, sizeof(struct sgi_partinfo)*16 );
|
---|
[2725] | 851 | current_label_type = LABEL_SGI;
|
---|
| 852 | g_partitions = 16;
|
---|
[1765] | 853 | sgi_volumes = 15;
|
---|
| 854 | sgi_set_entire();
|
---|
| 855 | sgi_set_volhdr();
|
---|
| 856 | for (i = 0; i < 4; i++) {
|
---|
| 857 | if (old[i].sysid) {
|
---|
| 858 | sgi_set_partition(i, old[i].start, old[i].nsect, old[i].sysid);
|
---|
| 859 | }
|
---|
| 860 | }
|
---|
| 861 | }
|
---|
| 862 |
|
---|
| 863 | static void
|
---|
| 864 | sgi_set_xcyl(void)
|
---|
| 865 | {
|
---|
| 866 | /* do nothing in the beginning */
|
---|
| 867 | }
|
---|
| 868 | #endif /* FEATURE_FDISK_ADVANCED */
|
---|
| 869 |
|
---|
| 870 | /* _____________________________________________________________
|
---|
| 871 | */
|
---|
| 872 |
|
---|
| 873 | static sgiinfo *
|
---|
| 874 | fill_sgiinfo(void)
|
---|
| 875 | {
|
---|
| 876 | sgiinfo *info = xzalloc(sizeof(sgiinfo));
|
---|
| 877 |
|
---|
| 878 | info->magic = SGI_SSWAP32(SGI_INFO_MAGIC);
|
---|
| 879 | info->b1 = SGI_SSWAP32(-1);
|
---|
| 880 | info->b2 = SGI_SSWAP16(-1);
|
---|
| 881 | info->b3 = SGI_SSWAP16(1);
|
---|
| 882 | /* You may want to replace this string !!!!!!! */
|
---|
| 883 | strcpy( (char*)info->scsi_string, "IBM OEM 0662S12 3 30" );
|
---|
| 884 | strcpy( (char*)info->serial, "0000" );
|
---|
| 885 | info->check1816 = SGI_SSWAP16(18*256 +16 );
|
---|
| 886 | strcpy( (char*)info->installer, "Sfx version 5.3, Oct 18, 1994" );
|
---|
| 887 | return info;
|
---|
| 888 | }
|
---|
| 889 | #endif /* SGI_LABEL */
|
---|