mount/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         u_char   s_dummy[16];
  20         u_char   s_magic[2];
  21 };
  22 #define minixmagic(s)   ((uint) s.s_magic[0] + (((uint) 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         u_char   s_dummy[56];
  45         u_char   s_magic[2];
  46 };
  47 #define extmagic(s)     ((uint) s.s_magic[0] + (((uint) s.s_magic[1]) << 8))
  48
  49 #define EXT2_PRE_02B_MAGIC  0xEF51
  50 #define EXT2_SUPER_MAGIC    0xEF53
  51 struct ext2_super_block {
  52         u_char   s_dummy1[56];
  53         u_char   s_magic[2];
  54         u_char   s_dummy2[46];
  55         u_char   s_uuid[16];
  56         u_char   s_volume_name[16];
  57 };
  58 #define ext2magic(s)    ((uint) s.s_magic[0] + (((uint) s.s_magic[1]) << 8))
  59
  60 #define _XIAFS_SUPER_MAGIC 0x012FD16D
  61 struct xiafs_super_block {
  62     u_char     s_boot_segment[512];     /*  1st sector reserved for boot */
  63     u_char     s_dummy[60];
  64     u_char     s_magic[4];
  65 };
  66 #define xiafsmagic(s)   ((uint) s.s_magic[0] + (((uint) s.s_magic[1]) << 8) + \
  67                         (((uint) s.s_magic[2]) << 16) + \
  68                         (((uint) s.s_magic[3]) << 24))
  69
  70 /* From jj@sunsite.ms.mff.cuni.cz Mon Mar 23 15:19:05 1998 */
  71 #define UFS_SUPER_MAGIC 0x00011954
  72 struct ufs_super_block {
  73     u_char     s_dummy[0x55c];
  74     u_char     s_magic[4];
  75 };
  76 #define ufsmagic(s)     ((uint) s.s_magic[0] + (((uint) s.s_magic[1]) << 8) + \
  77                          (((uint) s.s_magic[2]) << 16) + \
  78                          (((uint) s.s_magic[3]) << 24))
  79
  80 /* From Richard.Russon@ait.co.uk Wed Feb 24 08:05:27 1999 */
  81 #define NTFS_SUPER_MAGIC "NTFS"
  82 struct ntfs_super_block {
  83     u_char    s_dummy[3];
  84     u_char    s_magic[4];
  85 };
  86
  87 /* From inspection of a few FAT filesystems - aeb */
  88 /* Unfortunately I find almost the same thing on an extended partition;
  89    it looks like a primary has some directory entries where the extended
  90    has a partition table: IO.SYS, MSDOS.SYS, WINBOOT.SYS */
  91 struct fat_super_block {
  92     u_char    s_dummy[3];
  93     u_char    s_os[8];          /* "MSDOS5.0" or "MSWIN4.0" or "MSWIN4.1" */
  94                                 /* mtools-3.9.4 writes "MTOOL394" */
  95     u_char    s_dummy2[32];
  96     u_char    s_label[11];      /* for DOS? */
  97     u_char    s_fs[8];          /* "FAT12   " or "FAT16   " or all zero   */
  98                                 /* OS/2 BM has "FAT     " here. */
  99     u_char    s_dummy3[9];
 100     u_char    s_label2[11];     /* for Windows? */
 101     u_char    s_fs2[8];         /* garbage or "FAT32   " */
 102 };
 103
 104 #define XFS_SUPER_MAGIC "XFSB"
 105 #define XFS_SUPER_MAGIC2 "BSFX"
 106 struct xfs_super_block {
 107     u_char    s_magic[4];
 108     u_char    s_dummy[28];
 109     u_char    s_uuid[16];
 110     u_char    s_dummy2[60];
 111     u_char    s_fname[12];
 112 };
 113
 114 #define CRAMFS_SUPER_MAGIC 0x28cd3d45
 115 struct cramfs_super_block {
 116         u_char    s_magic[4];
 117         u_char    s_dummy[12];
 118         u_char    s_id[16];
 119 };
 120 #define cramfsmagic(s)  ((uint) s.s_magic[0] + (((uint) s.s_magic[1]) << 8) + \
 121                          (((uint) s.s_magic[2]) << 16) + \
 122                          (((uint) s.s_magic[3]) << 24))
 123
 124 #define HFS_SUPER_MAGIC 0x4244
 125 struct hfs_super_block {
 126         u_char    s_magic[2];
 127         u_char    s_dummy[18];
 128         u_char    s_blksize[4];
 129 };
 130 #define hfsmagic(s)     ((uint) s.s_magic[0] + (((uint) s.s_magic[1]) << 8))
 131 #define hfsblksize(s)   ((uint) s.s_blksize[0] + \
 132                          (((uint) s.s_blksize[1]) << 8) + \
 133                          (((uint) s.s_blksize[2]) << 16) + \
 134                          (((uint) s.s_blksize[3]) << 24))
 135
 136 #define HPFS_SUPER_MAGIC 0xf995e849
 137 struct hpfs_super_block {
 138         u_char    s_magic[4];
 139         u_char    s_magic2[4];
 140 };
 141 #define hpfsmagic(s)    ((uint) s.s_magic[0] + (((uint) s.s_magic[1]) << 8) + \
 142                          (((uint) s.s_magic[2]) << 16) + \
 143                          (((uint) s.s_magic[3]) << 24))
 144
 145 struct adfs_super_block {
 146         u_char    s_dummy[448];
 147         u_char    s_blksize[1];
 148         u_char    s_dummy2[62];
 149         u_char    s_checksum[1];
 150 };
 151 #define adfsblksize(s)  ((uint) s.s_blksize[0])