original development tree for Linux kernel GTP module; now long in mainline.
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  1. /*
  2. * Copyright (c) 2000-2001 Christoph Hellwig.
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions
  7. * are met:
  8. * 1. Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions, and the following disclaimer,
  10. * without modification.
  11. * 2. The name of the author may not be used to endorse or promote products
  12. * derived from this software without specific prior written permission.
  13. *
  14. * Alternatively, this software may be distributed under the terms of the
  15. * GNU General Public License ("GPL").
  16. *
  17. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  21. * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27. * SUCH DAMAGE.
  28. *
  29. */
  30. #ifndef _VXFS_SUPER_H_
  31. #define _VXFS_SUPER_H_
  32. /*
  33. * Veritas filesystem driver - superblock structure.
  34. *
  35. * This file contains the definition of the disk and core
  36. * superblocks of the Veritas Filesystem.
  37. */
  38. #include <linux/types.h>
  39. /*
  40. * Data types for use with the VxFS ondisk format.
  41. */
  42. typedef int32_t vx_daddr_t;
  43. typedef int32_t vx_ino_t;
  44. /*
  45. * Superblock magic number (vxfs_super->vs_magic).
  46. */
  47. #define VXFS_SUPER_MAGIC 0xa501FCF5
  48. /*
  49. * The root inode.
  50. */
  51. #define VXFS_ROOT_INO 2
  52. /*
  53. * Num of entries in free extent array
  54. */
  55. #define VXFS_NEFREE 32
  56. /*
  57. * VxFS superblock (disk).
  58. */
  59. struct vxfs_sb {
  60. /*
  61. * Readonly fields for the version 1 superblock.
  62. *
  63. * Lots of this fields are no more used by version 2
  64. * and never filesystems.
  65. */
  66. u_int32_t vs_magic; /* Magic number */
  67. int32_t vs_version; /* VxFS version */
  68. u_int32_t vs_ctime; /* create time - secs */
  69. u_int32_t vs_cutime; /* create time - usecs */
  70. int32_t __unused1; /* unused */
  71. int32_t __unused2; /* unused */
  72. vx_daddr_t vs_old_logstart; /* obsolete */
  73. vx_daddr_t vs_old_logend; /* obsolete */
  74. int32_t vs_bsize; /* block size */
  75. int32_t vs_size; /* number of blocks */
  76. int32_t vs_dsize; /* number of data blocks */
  77. u_int32_t vs_old_ninode; /* obsolete */
  78. int32_t vs_old_nau; /* obsolete */
  79. int32_t __unused3; /* unused */
  80. int32_t vs_old_defiextsize; /* obsolete */
  81. int32_t vs_old_ilbsize; /* obsolete */
  82. int32_t vs_immedlen; /* size of immediate data area */
  83. int32_t vs_ndaddr; /* number of direct extentes */
  84. vx_daddr_t vs_firstau; /* address of first AU */
  85. vx_daddr_t vs_emap; /* offset of extent map in AU */
  86. vx_daddr_t vs_imap; /* offset of inode map in AU */
  87. vx_daddr_t vs_iextop; /* offset of ExtOp. map in AU */
  88. vx_daddr_t vs_istart; /* offset of inode list in AU */
  89. vx_daddr_t vs_bstart; /* offset of fdblock in AU */
  90. vx_daddr_t vs_femap; /* aufirst + emap */
  91. vx_daddr_t vs_fimap; /* aufirst + imap */
  92. vx_daddr_t vs_fiextop; /* aufirst + iextop */
  93. vx_daddr_t vs_fistart; /* aufirst + istart */
  94. vx_daddr_t vs_fbstart; /* aufirst + bstart */
  95. int32_t vs_nindir; /* number of entries in indir */
  96. int32_t vs_aulen; /* length of AU in blocks */
  97. int32_t vs_auimlen; /* length of imap in blocks */
  98. int32_t vs_auemlen; /* length of emap in blocks */
  99. int32_t vs_auilen; /* length of ilist in blocks */
  100. int32_t vs_aupad; /* length of pad in blocks */
  101. int32_t vs_aublocks; /* data blocks in AU */
  102. int32_t vs_maxtier; /* log base 2 of aublocks */
  103. int32_t vs_inopb; /* number of inodes per blk */
  104. int32_t vs_old_inopau; /* obsolete */
  105. int32_t vs_old_inopilb; /* obsolete */
  106. int32_t vs_old_ndiripau; /* obsolete */
  107. int32_t vs_iaddrlen; /* size of indirect addr ext. */
  108. int32_t vs_bshift; /* log base 2 of bsize */
  109. int32_t vs_inoshift; /* log base 2 of inobp */
  110. int32_t vs_bmask; /* ~( bsize - 1 ) */
  111. int32_t vs_boffmask; /* bsize - 1 */
  112. int32_t vs_old_inomask; /* old_inopilb - 1 */
  113. int32_t vs_checksum; /* checksum of V1 data */
  114. /*
  115. * Version 1, writable
  116. */
  117. int32_t vs_free; /* number of free blocks */
  118. int32_t vs_ifree; /* number of free inodes */
  119. int32_t vs_efree[VXFS_NEFREE]; /* number of free extents by size */
  120. int32_t vs_flags; /* flags ?!? */
  121. u_int8_t vs_mod; /* filesystem has been changed */
  122. u_int8_t vs_clean; /* clean FS */
  123. u_int16_t __unused4; /* unused */
  124. u_int32_t vs_firstlogid; /* mount time log ID */
  125. u_int32_t vs_wtime; /* last time written - sec */
  126. u_int32_t vs_wutime; /* last time written - usec */
  127. u_int8_t vs_fname[6]; /* FS name */
  128. u_int8_t vs_fpack[6]; /* FS pack name */
  129. int32_t vs_logversion; /* log format version */
  130. int32_t __unused5; /* unused */
  131. /*
  132. * Version 2, Read-only
  133. */
  134. vx_daddr_t vs_oltext[2]; /* OLT extent and replica */
  135. int32_t vs_oltsize; /* OLT extent size */
  136. int32_t vs_iauimlen; /* size of inode map */
  137. int32_t vs_iausize; /* size of IAU in blocks */
  138. int32_t vs_dinosize; /* size of inode in bytes */
  139. int32_t vs_old_dniaddr; /* indir levels per inode */
  140. int32_t vs_checksum2; /* checksum of V2 RO */
  141. /*
  142. * Actually much more...
  143. */
  144. };
  145. /*
  146. * In core superblock filesystem private data for VxFS.
  147. */
  148. struct vxfs_sb_info {
  149. struct vxfs_sb *vsi_raw; /* raw (on disk) superblock */
  150. struct buffer_head *vsi_bp; /* buffer for raw superblock*/
  151. struct inode *vsi_fship; /* fileset header inode */
  152. struct inode *vsi_ilist; /* inode list inode */
  153. struct inode *vsi_stilist; /* structural inode list inode */
  154. u_long vsi_iext; /* initial inode list */
  155. ino_t vsi_fshino; /* fileset header inode */
  156. daddr_t vsi_oltext; /* OLT extent */
  157. daddr_t vsi_oltsize; /* OLT size */
  158. };
  159. /*
  160. * File modes. File types above 0xf000 are vxfs internal only, they should
  161. * not be passed back to higher levels of the system. vxfs file types must
  162. * never have one of the regular file type bits set.
  163. */
  164. enum vxfs_mode {
  165. VXFS_ISUID = 0x00000800, /* setuid */
  166. VXFS_ISGID = 0x00000400, /* setgid */
  167. VXFS_ISVTX = 0x00000200, /* sticky bit */
  168. VXFS_IREAD = 0x00000100, /* read */
  169. VXFS_IWRITE = 0x00000080, /* write */
  170. VXFS_IEXEC = 0x00000040, /* exec */
  171. VXFS_IFIFO = 0x00001000, /* Named pipe */
  172. VXFS_IFCHR = 0x00002000, /* Character device */
  173. VXFS_IFDIR = 0x00004000, /* Directory */
  174. VXFS_IFNAM = 0x00005000, /* Xenix device ?? */
  175. VXFS_IFBLK = 0x00006000, /* Block device */
  176. VXFS_IFREG = 0x00008000, /* Regular file */
  177. VXFS_IFCMP = 0x00009000, /* Compressed file ?!? */
  178. VXFS_IFLNK = 0x0000a000, /* Symlink */
  179. VXFS_IFSOC = 0x0000c000, /* Socket */
  180. /* VxFS internal */
  181. VXFS_IFFSH = 0x10000000, /* Fileset header */
  182. VXFS_IFILT = 0x20000000, /* Inode list */
  183. VXFS_IFIAU = 0x30000000, /* Inode allocation unit */
  184. VXFS_IFCUT = 0x40000000, /* Current usage table */
  185. VXFS_IFATT = 0x50000000, /* Attr. inode */
  186. VXFS_IFLCT = 0x60000000, /* Link count table */
  187. VXFS_IFIAT = 0x70000000, /* Indirect attribute file */
  188. VXFS_IFEMR = 0x80000000, /* Extent map reorg file */
  189. VXFS_IFQUO = 0x90000000, /* BSD quota file */
  190. VXFS_IFPTI = 0xa0000000, /* "Pass through" inode */
  191. VXFS_IFLAB = 0x11000000, /* Device label file */
  192. VXFS_IFOLT = 0x12000000, /* OLT file */
  193. VXFS_IFLOG = 0x13000000, /* Log file */
  194. VXFS_IFEMP = 0x14000000, /* Extent map file */
  195. VXFS_IFEAU = 0x15000000, /* Extent AU file */
  196. VXFS_IFAUS = 0x16000000, /* Extent AU summary file */
  197. VXFS_IFDEV = 0x17000000, /* Device config file */
  198. };
  199. #define VXFS_TYPE_MASK 0xfffff000
  200. #define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type))
  201. #define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO)
  202. #define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR)
  203. #define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR)
  204. #define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM)
  205. #define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK)
  206. #define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK)
  207. #define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG)
  208. #define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP)
  209. #define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC)
  210. #define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH)
  211. #define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT)
  212. /*
  213. * Inmode organisation types.
  214. */
  215. enum {
  216. VXFS_ORG_NONE = 0, /* Inode has *no* format ?!? */
  217. VXFS_ORG_EXT4 = 1, /* Ext4 */
  218. VXFS_ORG_IMMED = 2, /* All data stored in inode */
  219. VXFS_ORG_TYPED = 3, /* Typed extents */
  220. };
  221. #define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org))
  222. #define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE)
  223. #define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4)
  224. #define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED)
  225. #define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED)
  226. /*
  227. * Get filesystem private data from VFS inode.
  228. */
  229. #define VXFS_INO(ip) \
  230. ((struct vxfs_inode_info *)(ip)->i_private)
  231. /*
  232. * Get filesystem private data from VFS superblock.
  233. */
  234. #define VXFS_SBI(sbp) \
  235. ((struct vxfs_sb_info *)(sbp)->s_fs_info)
  236. #endif /* _VXFS_SUPER_H_ */