sys/src/cmd/9660srv/iso9660.h

   1 #define VOLDESC 16      /* sector number */
   2
   3 /*
   4  * L means little-endian, M means big-endian, and LM means little-endian
   5  * then again big-endian.
   6  */
   7 typedef uchar           Byte2L[2];
   8 typedef uchar           Byte2M[2];
   9 typedef uchar           Byte4LM[4];
  10 typedef uchar           Byte4L[4];
  11 typedef uchar           Byte4M[4];
  12 typedef uchar           Byte8LM[8];
  13 typedef union Drec      Drec;
  14 typedef union Voldesc   Voldesc;
  15
  16 enum
  17 {
  18         Boot            = 0,
  19         Primary         = 1,
  20         Supplementary   = 2,
  21         Partition       = 3,
  22         Terminator      = 255
  23 };
  24
  25 union   Voldesc
  26 {                       /* volume descriptor */
  27         uchar   byte[Sectorsize];
  28         union {                 /* for CD001, the ECMA standard */
  29                 struct
  30                 {
  31                         uchar   type;
  32                         uchar   stdid[5];
  33                         uchar   version;
  34                         uchar   unused;
  35                         uchar   sysid[32];
  36                         uchar   bootid[32];
  37                         uchar   data[1977];
  38                 } boot;
  39                 struct
  40                 {
  41                         uchar   type;
  42                         uchar   stdid[5];
  43                         uchar   version;
  44                         uchar   flags;
  45                         uchar   sysid[32];
  46                         uchar   volid[32];
  47                         Byte8LM partloc;
  48                         Byte8LM size;
  49                         uchar   escapes[32];
  50                         Byte4LM vsetsize;
  51                         Byte4LM vseqno;
  52                         Byte4LM blksize;
  53                         Byte8LM ptabsize;
  54                         Byte4L  lptable;
  55                         Byte4L  optlptable;
  56                         Byte4M  mptable;
  57                         Byte4M  optmptable;
  58                         uchar   rootdir[34];
  59                         uchar   volsetid[128];
  60                         uchar   pubid[128];
  61                         uchar   prepid[128];
  62                         uchar   appid[128];
  63                         uchar   copyright[37];
  64                         uchar   abstract[37];
  65                         uchar   bibliography[37];
  66                         uchar   cdate[17];
  67                         uchar   mdate[17];
  68                         uchar   expdate[17];
  69                         uchar   effdate[17];
  70                         uchar   fsversion;
  71                         uchar   unused3[1];
  72                         uchar   appuse[512];
  73                         uchar   unused4[653];
  74                 } desc;
  75         } z;
  76         union
  77         {                       /* for CDROM, the `High Sierra' standard */
  78                 struct
  79                 {
  80                         Byte8LM number;
  81                         uchar   type;
  82                         uchar   stdid[5];
  83                         uchar   version;
  84                         uchar   flags;
  85                         uchar   sysid[32];
  86                         uchar   volid[32];
  87                         Byte8LM partloc;
  88                         Byte8LM size;
  89                         uchar   escapes[32];
  90                         Byte4LM vsetsize;
  91                         Byte4LM vseqno;
  92                         Byte4LM blksize;
  93                         uchar   quux[40];
  94                         uchar   rootdir[34];
  95                         uchar   volsetid[128];
  96                         uchar   pubid[128];
  97                         uchar   prepid[128];
  98                         uchar   appid[128];
  99                         uchar   copyright[32];
 100                         uchar   abstract[32];
 101                         uchar   cdate[16];
 102                         uchar   mdate[16];
 103                         uchar   expdate[16];
 104                         uchar   effdate[16];
 105                         uchar   fsversion;
 106                 } desc;
 107         } r;
 108 };
 109
 110 union   Drec
 111 {
 112         struct
 113         {
 114                 uchar   reclen;
 115                 uchar   attrlen;
 116                 Byte8LM addr;
 117                 Byte8LM size;
 118                 uchar   date[6];
 119                 uchar   tzone;          /* flags in high sierra */
 120                 uchar   flags;          /* ? in high sierra */
 121                 uchar   unitsize;       /* ? in high sierra */
 122                 uchar   gapsize;        /* ? in high sierra */
 123                 Byte4LM vseqno;         /* ? in high sierra */
 124                 uchar   namelen;
 125                 uchar   name[1];
 126         };
 127         struct
 128         {
 129                 uchar   r_pad[24];
 130                 uchar   r_flags;
 131         };
 132 };
 133
 134 struct  Isofile
 135 {
 136         short   fmt;            /* 'z' if iso, 'r' if high sierra */
 137         short   blksize;
 138         vlong   offset;         /* true offset when reading directory */
 139         long    odelta;         /* true size of directory just read */
 140         vlong   doffset;        /* plan9 offset when reading directory */
 141         Drec    d;
 142 };