fdisk/fdisksgilabel.h

   1 #include <linux/types.h>   /* for __u32 etc */
   2 /*
   3  * Copyright (C) Andreas Neuper, Sep 1998.
   4  *      This file may be modified and redistributed under
   5  *      the terms of the GNU Public License.
   6  */
   7
   8 struct device_parameter { /* 48 bytes */
   9         unsigned char  skew;
  10         unsigned char  gap1;
  11         unsigned char  gap2;
  12         unsigned char  sparecyl;
  13         unsigned short pcylcount;
  14         unsigned short head_vol0;
  15         unsigned short ntrks;   /* tracks in cyl 0 or vol 0 */
  16         unsigned char  cmd_tag_queue_depth;
  17         unsigned char  unused0;
  18         unsigned short unused1;
  19         unsigned short nsect;   /* sectors/tracks in cyl 0 or vol 0 */
  20         unsigned short bytes;
  21         unsigned short ilfact;
  22         unsigned int   flags;           /* controller flags */
  23         unsigned int   datarate;
  24         unsigned int   retries_on_error;
  25         unsigned int   ms_per_word;
  26         unsigned short xylogics_gap1;
  27         unsigned short xylogics_syncdelay;
  28         unsigned short xylogics_readdelay;
  29         unsigned short xylogics_gap2;
  30         unsigned short xylogics_readgate;
  31         unsigned short xylogics_writecont;
  32 };
  33
  34 #define SGI_VOLUME      0x06
  35 #define SGI_EFS         0x07
  36 #define SGI_SWAP        0x03
  37 #define SGI_VOLHDR      0x00
  38 #define ENTIRE_DISK     SGI_VOLUME
  39 /*
  40  * controller flags
  41  */
  42 #define SECTOR_SLIP     0x01
  43 #define SECTOR_FWD      0x02
  44 #define TRACK_FWD       0x04
  45 #define TRACK_MULTIVOL  0x08
  46 #define IGNORE_ERRORS   0x10
  47 #define RESEEK          0x20
  48 #define ENABLE_CMDTAGQ  0x40
  49
  50 typedef struct {
  51         unsigned int   magic;        /* expect SGI_LABEL_MAGIC */
  52         unsigned short boot_part;        /* active boot partition */
  53         unsigned short swap_part;        /* active swap partition */
  54         unsigned char  boot_file[16];    /* name of the bootfile */
  55         struct device_parameter devparam;       /*  1 * 48 bytes */
  56         struct volume_directory {               /* 15 * 16 bytes */
  57                 unsigned char vol_file_name[8]; /* an character array */
  58                 unsigned int  vol_file_start;   /* number of logical block */
  59                 unsigned int  vol_file_size;    /* number of bytes */
  60         } directory[15];
  61         struct sgi_partition {                  /* 16 * 12 bytes */
  62                 unsigned int num_sectors;       /* number of blocks */
  63                 unsigned int start_sector;      /* sector must be cylinder aligned */
  64                 unsigned int id;
  65         } partitions[16];
  66         unsigned int   csum;
  67         unsigned int   fillbytes;
  68 } sgi_partition;
  69
  70 typedef struct {
  71         unsigned int   magic;           /* looks like a magic number */
  72         unsigned int   a2;
  73         unsigned int   a3;
  74         unsigned int   a4;
  75         unsigned int   b1;
  76         unsigned short b2;
  77         unsigned short b3;
  78         unsigned int   c[16];
  79         unsigned short d[3];
  80         unsigned char  scsi_string[50];
  81         unsigned char  serial[137];
  82         unsigned short check1816;
  83         unsigned char  installer[225];
  84 } sgiinfo;
  85
  86 #define SGI_LABEL_MAGIC         0x0be5a941
  87 #define SGI_LABEL_MAGIC_SWAPPED 0x41a9e50b
  88 #define SGI_INFO_MAGIC          0x00072959
  89 #define SGI_INFO_MAGIC_SWAPPED  0x59290700
  90 #define SSWAP16(x) (other_endian ? __swap16(x) \
  91                                  : (__u16)(x))
  92 #define SSWAP32(x) (other_endian ? __swap32(x) \
  93                                  : (__u32)(x))
  94 #define scround(x) ((x+(display_factor-1)*unit_flag)/display_factor)
  95
  96 /* fdisk.c */
  97 #define sgilabel ((sgi_partition *)buffer)
  98 #define sgiparam (sgilabel->devparam)
  99 extern char buffer[MAX_SECTOR_SIZE];
 100 extern char changed[MAXIMUM_PARTS];
 101 extern uint heads, sectors, cylinders;
 102 extern int show_begin;
 103 extern int sgi_label;
 104 extern char *partition_type(unsigned char type);
 105 extern void update_units(void);
 106 extern char read_chars(char *mesg);
 107
 108 /* fdisksgilabel.c */
 109 extern struct   systypes sgi_sys_types[];
 110 extern void     sgi_nolabel( void );
 111 extern int      check_sgi_label( void );
 112 extern void     sgi_list_table( int xtra );
 113 extern void     sgi_change_sysid( int i, int sys );
 114 extern int      sgi_get_start_sector( int i );
 115 extern int      sgi_get_num_sectors( int i );
 116 extern int      sgi_get_sysid( int i );
 117 extern void     sgi_delete_partition( int i );
 118 extern void     sgi_add_partition( int n, int sys );
 119 extern void     create_sgilabel( void );
 120 extern void     create_sgiinfo( void );
 121 extern int      verify_sgi( int verbose );
 122 extern void     sgi_write_table( void );
 123 extern void     sgi_set_ilfact( void );
 124 extern void     sgi_set_rspeed( void );
 125 extern void     sgi_set_pcylcount( void );
 126 extern void     sgi_set_xcyl( void );
 127 extern void     sgi_set_ncyl( void );
 128 extern void     sgi_set_bootpartition( int i );
 129 extern void     sgi_set_swappartition( int i );
 130 extern int      sgi_get_bootpartition( void );
 131 extern int      sgi_get_swappartition( void );
 132 extern void     sgi_set_bootfile( const char* aFile );
 133 extern const char *sgi_get_bootfile( void );