fs/affs/amigaffs.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef AMIGAFFS_H
   3 #define AMIGAFFS_H
   4
   5 #include <linux/types.h>
   6 #include <asm/byteorder.h>
   7
   8 #define FS_OFS          0x444F5300
   9 #define FS_FFS          0x444F5301
  10 #define FS_INTLOFS      0x444F5302
  11 #define FS_INTLFFS      0x444F5303
  12 #define FS_DCOFS        0x444F5304
  13 #define FS_DCFFS        0x444F5305
  14 #define MUFS_FS         0x6d754653   /* 'muFS' */
  15 #define MUFS_OFS        0x6d754600   /* 'muF\0' */
  16 #define MUFS_FFS        0x6d754601   /* 'muF\1' */
  17 #define MUFS_INTLOFS    0x6d754602   /* 'muF\2' */
  18 #define MUFS_INTLFFS    0x6d754603   /* 'muF\3' */
  19 #define MUFS_DCOFS      0x6d754604   /* 'muF\4' */
  20 #define MUFS_DCFFS      0x6d754605   /* 'muF\5' */
  21
  22 #define T_SHORT         2
  23 #define T_LIST          16
  24 #define T_DATA          8
  25
  26 #define ST_LINKFILE     -4
  27 #define ST_FILE         -3
  28 #define ST_ROOT         1
  29 #define ST_USERDIR      2
  30 #define ST_SOFTLINK     3
  31 #define ST_LINKDIR      4
  32
  33 #define AFFS_ROOT_BMAPS         25
  34
  35 /* Seconds since Amiga epoch of 1978/01/01 to UNIX */
  36 #define AFFS_EPOCH_DELTA ((8 * 365 + 2) * 86400LL)
  37
  38 struct affs_date {
  39         __be32 days;
  40         __be32 mins;
  41         __be32 ticks;
  42 };
  43
  44 struct affs_short_date {
  45         __be16 days;
  46         __be16 mins;
  47         __be16 ticks;
  48 };
  49
  50 struct affs_root_head {
  51         __be32 ptype;
  52         /* The following fields are not used, but kept as documentation. */
  53         __be32 spare1;
  54         __be32 spare2;
  55         __be32 hash_size;
  56         __be32 spare3;
  57         __be32 checksum;
  58         __be32 hashtable[];
  59 };
  60
  61 struct affs_root_tail {
  62         __be32 bm_flag;
  63         __be32 bm_blk[AFFS_ROOT_BMAPS];
  64         __be32 bm_ext;
  65         struct affs_date root_change;
  66         u8 disk_name[32];
  67         __be32 spare1;
  68         __be32 spare2;
  69         struct affs_date disk_change;
  70         struct affs_date disk_create;
  71         __be32 spare3;
  72         __be32 spare4;
  73         __be32 dcache;
  74         __be32 stype;
  75 };
  76
  77 struct affs_head {
  78         __be32 ptype;
  79         __be32 key;
  80         __be32 block_count;
  81         __be32 spare1;
  82         __be32 first_data;
  83         __be32 checksum;
  84         __be32 table[];
  85 };
  86
  87 struct affs_tail {
  88         __be32 spare1;
  89         __be16 uid;
  90         __be16 gid;
  91         __be32 protect;
  92         __be32 size;
  93         u8 comment[92];
  94         struct affs_date change;
  95         u8 name[32];
  96         __be32 spare2;
  97         __be32 original;
  98         __be32 link_chain;
  99         __be32 spare[5];
 100         __be32 hash_chain;
 101         __be32 parent;
 102         __be32 extension;
 103         __be32 stype;
 104 };
 105
 106 struct slink_front
 107 {
 108         __be32 ptype;
 109         __be32 key;
 110         __be32 spare1[3];
 111         __be32 checksum;
 112         u8 symname[];   /* depends on block size */
 113 };
 114
 115 struct affs_data_head
 116 {
 117         __be32 ptype;
 118         __be32 key;
 119         __be32 sequence;
 120         __be32 size;
 121         __be32 next;
 122         __be32 checksum;
 123         u8 data[];      /* depends on block size */
 124 };
 125
 126 /* Permission bits */
 127
 128 #define FIBF_OTR_READ           0x8000
 129 #define FIBF_OTR_WRITE          0x4000
 130 #define FIBF_OTR_EXECUTE        0x2000
 131 #define FIBF_OTR_DELETE         0x1000
 132 #define FIBF_GRP_READ           0x0800
 133 #define FIBF_GRP_WRITE          0x0400
 134 #define FIBF_GRP_EXECUTE        0x0200
 135 #define FIBF_GRP_DELETE         0x0100
 136
 137 #define FIBF_HIDDEN             0x0080
 138 #define FIBF_SCRIPT             0x0040
 139 #define FIBF_PURE               0x0020          /* no use under linux */
 140 #define FIBF_ARCHIVED           0x0010          /* never set, always cleared on write */
 141 #define FIBF_NOREAD             0x0008          /* 0 means allowed */
 142 #define FIBF_NOWRITE            0x0004          /* 0 means allowed */
 143 #define FIBF_NOEXECUTE          0x0002          /* 0 means allowed, ignored under linux */
 144 #define FIBF_NODELETE           0x0001          /* 0 means allowed */
 145
 146 #define FIBF_OWNER              0x000F          /* Bits pertaining to owner */
 147 #define FIBF_MASK               0xEE0E          /* Bits modified by Linux */
 148
 149 #endif