src/nash/linux_fs.h

   1 /* Including <linux/fs.h> became more and more painful.
   2    Below a very abbreviated version of some declarations,
   3    only designed to be able to check a magic number
   4    in case no filesystem type was given. */
   5
   6 #ifndef BLKGETSIZE
   7 #ifndef _IO
   8 /* pre-1.3.45 */
   9 #define BLKGETSIZE 0x1260                  /* return device size */
  10 #else
  11 /* same on i386, m68k, arm; different on alpha, mips, sparc, ppc */
  12 #define BLKGETSIZE _IO(0x12,96)
  13 #endif
  14 #endif
  15
  16 #define MINIX_SUPER_MAGIC   0x137F         /* original minix fs */
  17 #define MINIX_SUPER_MAGIC2  0x138F         /* minix fs, 30 char names */
  18 struct minix_super_block {
  19         unsigned char   s_dummy[16];
  20         unsigned char   s_magic[2];
  21 };
  22 #define minixmagic(s)   ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8))
  23
  24 #define ISODCL(from, to) (to - from + 1)
  25 #define ISO_STANDARD_ID "CD001"
  26 struct iso_volume_descriptor {
  27         char type[ISODCL(1,1)]; /* 711 */
  28         char id[ISODCL(2,6)];
  29         char version[ISODCL(7,7)];
  30         char data[ISODCL(8,2048)];
  31 };
  32
  33 #define HS_STANDARD_ID "CDROM"
  34 struct  hs_volume_descriptor {
  35         char foo[ISODCL (  1,   8)]; /* 733 */
  36         char type[ISODCL (  9,   9)]; /* 711 */
  37         char id[ISODCL ( 10,  14)];
  38         char version[ISODCL ( 15,  15)]; /* 711 */
  39         char data[ISODCL(16,2048)];
  40 };
  41
  42 #define EXT_SUPER_MAGIC 0x137D
  43 struct ext_super_block {
  44         unsigned char   s_dummy[56];
  45         unsigned char   s_magic[2];
  46 };
  47 #define extmagic(s)     ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8))
  48
  49 #define EXT2_PRE_02B_MAGIC  0xEF51
  50 #define EXT2_SUPER_MAGIC    0xEF53
  51 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
  52 struct ext2_super_block {
  53         unsigned char   s_dummy1[56];
  54         unsigned char   s_magic[2];
  55         unsigned char   s_dummy2[34];
  56         unsigned char   s_feature_compat[4];
  57         unsigned char   s_feature_incompat[4];
  58         unsigned char   s_feature_ro_compat[4];
  59         unsigned char   s_uuid[16];
  60         unsigned char   s_volume_name[16];
  61         unsigned char   s_dummy3[88];
  62         unsigned char   s_journal_inum[4];      /* ext3 only */
  63 };
  64 #define ext2magic(s)    ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8))
  65
  66 struct reiserfs_super_block
  67 {
  68         unsigned char           s_block_count[4];
  69         unsigned char           s_free_blocks[4];
  70         unsigned char           s_root_block[4];
  71         unsigned char           s_journal_block[4];
  72         unsigned char           s_journal_dev[4];
  73         unsigned char           s_orig_journal_size[4];
  74         unsigned char           s_journal_trans_max[4];
  75         unsigned char           s_journal_block_count[4];
  76         unsigned char           s_journal_max_batch[4];
  77         unsigned char           s_journal_max_commit_age[4];
  78         unsigned char           s_journal_max_trans_age[4];
  79         unsigned char           s_blocksize[2];
  80         unsigned char           s_oid_maxsize[2];
  81         unsigned char           s_oid_cursize[2];
  82         unsigned char           s_state[2];
  83         unsigned char           s_magic[12];
  84 };
  85 #define REISERFS_SUPER_MAGIC_STRING "ReIsErFs"
  86 #define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs"
  87 #define REISERFS_DISK_OFFSET_IN_BYTES (64 * 1024)
  88 /* the spot for the super in versions 3.5 - 3.5.10 (inclusive) */
  89 #define REISERFS_OLD_DISK_OFFSET_IN_BYTES (8 * 1024)
  90
  91 #define _XIAFS_SUPER_MAGIC 0x012FD16D
  92 struct xiafs_super_block {
  93     unsigned char     s_boot_segment[512];     /*  1st sector reserved for boot */
  94     unsigned char     s_dummy[60];
  95     unsigned char     s_magic[4];
  96 };
  97 #define xiafsmagic(s)   ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8) + \
  98                         (((unsigned int) s.s_magic[2]) << 16) + \
  99                         (((unsigned int) s.s_magic[3]) << 24))
 100
 101 /* From jj@sunsite.ms.mff.cuni.cz Mon Mar 23 15:19:05 1998 */
 102 #define UFS_SUPER_MAGIC 0x00011954
 103 struct ufs_super_block {
 104     unsigned char     s_dummy[0x55c];
 105     unsigned char     s_magic[4];
 106 };
 107 #define ufsmagic(s)     ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8) + \
 108                          (((unsigned int) s.s_magic[2]) << 16) + \
 109                          (((unsigned int) s.s_magic[3]) << 24))
 110
 111 /* From Richard.Russon@ait.co.uk Wed Feb 24 08:05:27 1999 */
 112 #define NTFS_SUPER_MAGIC "NTFS"
 113 struct ntfs_super_block {
 114     unsigned char    s_dummy[3];
 115     unsigned char    s_magic[4];
 116 };
 117
 118 /* From inspection of a few FAT filesystems - aeb */
 119 /* Unfortunately I find almost the same thing on an extended partition;
 120    it looks like a primary has some directory entries where the extended
 121    has a partition table: IO.SYS, MSDOS.SYS, WINBOOT.SYS */
 122 struct fat_super_block {
 123     unsigned char    s_dummy[3];
 124     unsigned char    s_os[8];           /* "MSDOS5.0" or "MSWIN4.0" or "MSWIN4.1" */
 125                                 /* mtools-3.9.4 writes "MTOOL394" */
 126     unsigned char    s_dummy2[32];
 127     unsigned char    s_label[11];       /* for DOS? */
 128     unsigned char    s_fs[8];           /* "FAT12   " or "FAT16   " or all zero   */
 129                                 /* OS/2 BM has "FAT     " here. */
 130     unsigned char    s_dummy3[9];
 131     unsigned char    s_label2[11];      /* for Windows? */
 132     unsigned char    s_fs2[8];          /* garbage or "FAT32   " */
 133 };
 134
 135 #define XFS_SUPER_MAGIC "XFSB"
 136 struct xfs_super_block {
 137     unsigned char    s_magic[4];
 138     unsigned char    s_dummy[28];
 139     unsigned char    s_uuid[16];
 140     unsigned char    s_dummy2[60];
 141     unsigned char    s_fname[12];
 142 };
 143
 144 #define CRAMFS_SUPER_MAGIC 0x28cd3d45
 145 struct cramfs_super_block {
 146         unsigned char    s_magic[4];
 147         unsigned char    s_dummy[12];
 148         unsigned char    s_id[16];
 149 };
 150 #define cramfsmagic(s)  ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8) + \
 151                          (((unsigned int) s.s_magic[2]) << 16) + \
 152                          (((unsigned int) s.s_magic[3]) << 24))
 153
 154 #define HFS_SUPER_MAGIC 0x4244
 155 struct hfs_super_block {
 156         unsigned char    s_magic[2];
 157         unsigned char    s_dummy[18];
 158         unsigned char    s_blksize[4];
 159 };
 160 #define hfsmagic(s)     ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8))
 161 #define hfsblksize(s)   ((unsigned int) s.s_blksize[0] + \
 162                          (((unsigned int) s.s_blksize[1]) << 8) + \
 163                          (((unsigned int) s.s_blksize[2]) << 16) + \
 164                          (((unsigned int) s.s_blksize[3]) << 24))
 165
 166 #define HPFS_SUPER_MAGIC 0xf995e849
 167 struct hpfs_super_block {
 168         unsigned char    s_magic[4];
 169         unsigned char    s_magic2[4];
 170 };
 171 #define hpfsmagic(s)    ((unsigned int) s.s_magic[0] + (((unsigned int) s.s_magic[1]) << 8) + \
 172                          (((unsigned int) s.s_magic[2]) << 16) + \
 173                          (((unsigned int) s.s_magic[3]) << 24))
 174
 175 struct adfs_super_block {
 176         unsigned char    s_dummy[448];
 177         unsigned char    s_blksize[1];
 178         unsigned char    s_dummy2[62];
 179         unsigned char    s_checksum[1];
 180 };
 181 #define adfsblksize(s)  ((unsigned int) s.s_blksize[0])