usr/src/grub/grub-0.97/stage2/iso9660.h

   1 /*
   2  *  ISO 9660 filesystem backend for GRUB (GRand Unified Bootloader)
   3  *  including Rock Ridge Extensions support
   4  *
   5  *  Copyright (C) 1998, 1999  Kousuke Takai  <tak@kmc.kyoto-u.ac.jp>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21 /*
  22  *  References:
  23  *      linux/fs/isofs/rock.[ch]
  24  *      mkisofs-1.11.1/diag/isoinfo.c
  25  *      mkisofs-1.11.1/iso9660.h
  26  *              (all are written by Eric Youngdale)
  27  */
  28
  29 #ifndef _ISO9660_H_
  30 #define _ISO9660_H_
  31
  32 #define ISO_SECTOR_BITS              (11)
  33 #define ISO_SECTOR_SIZE              (1<<ISO_SECTOR_BITS)
  34
  35 #define ISO_REGULAR     1       /* regular file */
  36 #define ISO_DIRECTORY   2       /* directory    */
  37 #define ISO_OTHER       0       /* other file (with Rock Ridge) */
  38
  39 #define RR_FLAG_PX      0x01    /* have POSIX file attributes */
  40 #define RR_FLAG_PN      0x02    /* POSIX devices */
  41 #define RR_FLAG_SL      0x04    /* Symbolic link */
  42 #define RR_FLAG_NM      0x08    /* have alternate file name   */
  43 #define RR_FLAG_CL      0x10    /* Child link */
  44 #define RR_FLAG_PL      0x20    /* Parent link */
  45 #define RR_FLAG_RE      0x40    /* Relocation directory */
  46 #define RR_FLAG_TF      0x80    /* Timestamps */
  47
  48 /* POSIX file attributes for Rock Ridge extensions */
  49 #define POSIX_S_IFMT    0xF000
  50 #define POSIX_S_IFREG   0x8000
  51 #define POSIX_S_IFDIR   0x4000
  52
  53 /* volume descriptor types */
  54 #define ISO_VD_PRIMARY 1
  55 #define ISO_VD_END 255
  56
  57 #define ISO_STANDARD_ID "CD001"
  58
  59 #ifndef ASM_FILE
  60
  61 #ifndef __sun
  62 #ifndef __BIT_TYPES_DEFINED__
  63 typedef          int     int8_t __attribute__((mode(QI)));
  64 typedef unsigned int   u_int8_t __attribute__((mode(QI)));
  65 typedef          int    int16_t __attribute__((mode(HI)));
  66 typedef unsigned int  u_int16_t __attribute__((mode(HI)));
  67 typedef          int    int32_t __attribute__((mode(SI)));
  68 typedef unsigned int  u_int32_t __attribute__((mode(SI)));
  69 #endif
  70 #else
  71 #ifndef GRUB_UTIL
  72 typedef          char  int8_t;
  73 typedef          short int16_t;
  74 typedef          int   int32_t;
  75 #endif /* ! GRUB_UTIL */
  76 typedef unsigned char  u_int8_t;
  77 typedef unsigned short u_int16_t;
  78 typedef unsigned int   u_int32_t;
  79 #endif /* __sun */
  80
  81 typedef union {
  82   u_int8_t l,b;
  83 }       iso_8bit_t;
  84
  85 struct __iso_16bit {
  86   u_int16_t l, b;
  87 } __attribute__ ((packed));
  88 typedef struct __iso_16bit iso_16bit_t;
  89
  90 struct __iso_32bit {
  91   u_int32_t l, b;
  92 } __attribute__ ((packed));
  93 typedef struct __iso_32bit iso_32bit_t;
  94
  95 typedef u_int8_t                iso_date_t[7];
  96
  97 struct iso_directory_record {
  98   iso_8bit_t    length;
  99   iso_8bit_t    ext_attr_length;
 100   iso_32bit_t   extent;
 101   iso_32bit_t   size;
 102   iso_date_t    date;
 103   iso_8bit_t    flags;
 104   iso_8bit_t    file_unit_size;
 105   iso_8bit_t    interleave;
 106   iso_16bit_t   volume_seq_number;
 107   iso_8bit_t    name_len;
 108   u_int8_t      name[1];
 109 } __attribute__ ((packed));
 110
 111 struct iso_primary_descriptor {
 112   iso_8bit_t    type;
 113   u_int8_t      id[5];
 114   iso_8bit_t    version;
 115   u_int8_t      _unused1[1];
 116   u_int8_t      system_id[32];
 117   u_int8_t      volume_id[32];
 118   u_int8_t      _unused2[8];
 119   iso_32bit_t   volume_space_size;
 120   u_int8_t      _unused3[32];
 121   iso_16bit_t   volume_set_size;
 122   iso_16bit_t   volume_seq_number;
 123   iso_16bit_t   logical_block_size;
 124   iso_32bit_t   path_table_size;
 125   u_int8_t      type_l_path_table[4];
 126   u_int8_t      opt_type_l_path_table[4];
 127   u_int8_t      type_m_path_table[4];
 128   u_int8_t      opt_type_m_path_table[4];
 129   struct iso_directory_record root_directory_record;
 130   u_int8_t      volume_set_id[128];
 131   u_int8_t      publisher_id[128];
 132   u_int8_t      preparer_id[128];
 133   u_int8_t      application_id[128];
 134   u_int8_t      copyright_file_id[37];
 135   u_int8_t      abstract_file_id[37];
 136   u_int8_t      bibliographic_file_id[37];
 137   u_int8_t      creation_date[17];
 138   u_int8_t      modification_date[17];
 139   u_int8_t      expiration_date[17];
 140   u_int8_t      effective_date[17];
 141   iso_8bit_t    file_structure_version;
 142   u_int8_t      _unused4[1];
 143   u_int8_t      application_data[512];
 144   u_int8_t      _unused5[653];
 145 } __attribute__ ((packed));
 146
 147 struct rock_ridge {
 148   u_int16_t     signature;
 149   u_int8_t      len;
 150   u_int8_t      version;
 151   union {
 152     struct SP {
 153       u_int16_t magic;
 154       u_int8_t  skip;
 155     } sp;
 156     struct CE {
 157       iso_32bit_t       extent;
 158       iso_32bit_t       offset;
 159       iso_32bit_t       size;
 160     } ce;
 161     struct ER {
 162       u_int8_t  len_id;
 163       u_int8_t  len_des;
 164       u_int8_t  len_src;
 165       u_int8_t  ext_ver;
 166       u_int8_t  data[0];
 167     } er;
 168     struct RR {
 169       iso_8bit_t        flags;
 170     } rr;
 171     struct PX {
 172       iso_32bit_t       mode;
 173       iso_32bit_t       nlink;
 174       iso_32bit_t       uid;
 175       iso_32bit_t       gid;
 176     } px;
 177     struct PN {
 178       iso_32bit_t       dev_high;
 179       iso_32bit_t       dev_low;
 180     } pn;
 181     struct SL {
 182       iso_8bit_t flags;
 183       struct SL_component {
 184         iso_8bit_t      flags;
 185         u_int8_t                len;
 186         u_int8_t                text[0];
 187       } link;
 188     } sl;
 189     struct NM {
 190       iso_8bit_t        flags;
 191       u_int8_t  name[0];
 192     } nm;
 193     struct CL {
 194       iso_32bit_t       location;
 195     } cl;
 196     struct PL {
 197       iso_32bit_t       location;
 198     } pl;
 199     struct TF {
 200       iso_8bit_t        flags;
 201       iso_date_t        times[0];
 202     } tf;
 203   } u;
 204 } __attribute__ ((packed));
 205
 206 typedef union RR_ptr {
 207   struct rock_ridge *rr;
 208   char            *ptr;
 209   int              i;
 210 } RR_ptr_t;
 211
 212 #define RRMAGIC(c1, c2) ((c1)|(c2) << 8)
 213
 214 #define CHECK2(ptr, c1, c2) \
 215         (*(unsigned short *)(ptr) == (((c1) | (c2) << 8) & 0xFFFF))
 216
 217 #endif /* !ASM_FILE */
 218
 219 #endif /* _ISO9660_H_ */