/* * Copyright (c) 2000-2001 Christoph Hellwig. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL"). * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #ifndef _VXFS_SUPER_H_ #define _VXFS_SUPER_H_ /* * Veritas filesystem driver - superblock structure. * * This file contains the definition of the disk and core * superblocks of the Veritas Filesystem. */ #include <linux/types.h> /* * Data types for use with the VxFS ondisk format. */ typedef int32_t vx_daddr_t; typedef int32_t vx_ino_t; /* * Superblock magic number (vxfs_super->vs_magic). */ #define VXFS_SUPER_MAGIC 0xa501FCF5 /* * The root inode. */ #define VXFS_ROOT_INO 2 /* * Num of entries in free extent array */ #define VXFS_NEFREE 32 /* * VxFS superblock (disk). */ struct vxfs_sb { /* * Readonly fields for the version 1 superblock. * * Lots of this fields are no more used by version 2 * and never filesystems. */ u_int32_t vs_magic; /* Magic number */ int32_t vs_version; /* VxFS version */ u_int32_t vs_ctime; /* create time - secs */ u_int32_t vs_cutime; /* create time - usecs */ int32_t __unused1; /* unused */ int32_t __unused2; /* unused */ vx_daddr_t vs_old_logstart; /* obsolete */ vx_daddr_t vs_old_logend; /* obsolete */ int32_t vs_bsize; /* block size */ int32_t vs_size; /* number of blocks */ int32_t vs_dsize; /* number of data blocks */ u_int32_t vs_old_ninode; /* obsolete */ int32_t vs_old_nau; /* obsolete */ int32_t __unused3; /* unused */ int32_t vs_old_defiextsize; /* obsolete */ int32_t vs_old_ilbsize; /* obsolete */ int32_t vs_immedlen; /* size of immediate data area */ int32_t vs_ndaddr; /* number of direct extentes */ vx_daddr_t vs_firstau; /* address of first AU */ vx_daddr_t vs_emap; /* offset of extent map in AU */ vx_daddr_t vs_imap; /* offset of inode map in AU */ vx_daddr_t vs_iextop; /* offset of ExtOp. map in AU */ vx_daddr_t vs_istart; /* offset of inode list in AU */ vx_daddr_t vs_bstart; /* offset of fdblock in AU */ vx_daddr_t vs_femap; /* aufirst + emap */ vx_daddr_t vs_fimap; /* aufirst + imap */ vx_daddr_t vs_fiextop; /* aufirst + iextop */ vx_daddr_t vs_fistart; /* aufirst + istart */ vx_daddr_t vs_fbstart; /* aufirst + bstart */ int32_t vs_nindir; /* number of entries in indir */ int32_t vs_aulen; /* length of AU in blocks */ int32_t vs_auimlen; /* length of imap in blocks */ int32_t vs_auemlen; /* length of emap in blocks */ int32_t vs_auilen; /* length of ilist in blocks */ int32_t vs_aupad; /* length of pad in blocks */ int32_t vs_aublocks; /* data blocks in AU */ int32_t vs_maxtier; /* log base 2 of aublocks */ int32_t vs_inopb; /* number of inodes per blk */ int32_t vs_old_inopau; /* obsolete */ int32_t vs_old_inopilb; /* obsolete */ int32_t vs_old_ndiripau; /* obsolete */ int32_t vs_iaddrlen; /* size of indirect addr ext. */ int32_t vs_bshift; /* log base 2 of bsize */ int32_t vs_inoshift; /* log base 2 of inobp */ int32_t vs_bmask; /* ~( bsize - 1 ) */ int32_t vs_boffmask; /* bsize - 1 */ int32_t vs_old_inomask; /* old_inopilb - 1 */ int32_t vs_checksum; /* checksum of V1 data */ /* * Version 1, writable */ int32_t vs_free; /* number of free blocks */ int32_t vs_ifree; /* number of free inodes */ int32_t vs_efree[VXFS_NEFREE]; /* number of free extents by size */ int32_t vs_flags; /* flags ?!? */ u_int8_t vs_mod; /* filesystem has been changed */ u_int8_t vs_clean; /* clean FS */ u_int16_t __unused4; /* unused */ u_int32_t vs_firstlogid; /* mount time log ID */ u_int32_t vs_wtime; /* last time written - sec */ u_int32_t vs_wutime; /* last time written - usec */ u_int8_t vs_fname[6]; /* FS name */ u_int8_t vs_fpack[6]; /* FS pack name */ int32_t vs_logversion; /* log format version */ int32_t __unused5; /* unused */ /* * Version 2, Read-only */ vx_daddr_t vs_oltext[2]; /* OLT extent and replica */ int32_t vs_oltsize; /* OLT extent size */ int32_t vs_iauimlen; /* size of inode map */ int32_t vs_iausize; /* size of IAU in blocks */ int32_t vs_dinosize; /* size of inode in bytes */ int32_t vs_old_dniaddr; /* indir levels per inode */ int32_t vs_checksum2; /* checksum of V2 RO */ /* * Actually much more... */ }; /* * In core superblock filesystem private data for VxFS. */ struct vxfs_sb_info { struct vxfs_sb *vsi_raw; /* raw (on disk) superblock */ struct buffer_head *vsi_bp; /* buffer for raw superblock*/ struct inode *vsi_fship; /* fileset header inode */ struct inode *vsi_ilist; /* inode list inode */ struct inode *vsi_stilist; /* structural inode list inode */ u_long vsi_iext; /* initial inode list */ ino_t vsi_fshino; /* fileset header inode */ daddr_t vsi_oltext; /* OLT extent */ daddr_t vsi_oltsize; /* OLT size */ }; /* * File modes. File types above 0xf000 are vxfs internal only, they should * not be passed back to higher levels of the system. vxfs file types must * never have one of the regular file type bits set. */ enum vxfs_mode { VXFS_ISUID = 0x00000800, /* setuid */ VXFS_ISGID = 0x00000400, /* setgid */ VXFS_ISVTX = 0x00000200, /* sticky bit */ VXFS_IREAD = 0x00000100, /* read */ VXFS_IWRITE = 0x00000080, /* write */ VXFS_IEXEC = 0x00000040, /* exec */ VXFS_IFIFO = 0x00001000, /* Named pipe */ VXFS_IFCHR = 0x00002000, /* Character device */ VXFS_IFDIR = 0x00004000, /* Directory */ VXFS_IFNAM = 0x00005000, /* Xenix device ?? */ VXFS_IFBLK = 0x00006000, /* Block device */ VXFS_IFREG = 0x00008000, /* Regular file */ VXFS_IFCMP = 0x00009000, /* Compressed file ?!? */ VXFS_IFLNK = 0x0000a000, /* Symlink */ VXFS_IFSOC = 0x0000c000, /* Socket */ /* VxFS internal */ VXFS_IFFSH = 0x10000000, /* Fileset header */ VXFS_IFILT = 0x20000000, /* Inode list */ VXFS_IFIAU = 0x30000000, /* Inode allocation unit */ VXFS_IFCUT = 0x40000000, /* Current usage table */ VXFS_IFATT = 0x50000000, /* Attr. inode */ VXFS_IFLCT = 0x60000000, /* Link count table */ VXFS_IFIAT = 0x70000000, /* Indirect attribute file */ VXFS_IFEMR = 0x80000000, /* Extent map reorg file */ VXFS_IFQUO = 0x90000000, /* BSD quota file */ VXFS_IFPTI = 0xa0000000, /* "Pass through" inode */ VXFS_IFLAB = 0x11000000, /* Device label file */ VXFS_IFOLT = 0x12000000, /* OLT file */ VXFS_IFLOG = 0x13000000, /* Log file */ VXFS_IFEMP = 0x14000000, /* Extent map file */ VXFS_IFEAU = 0x15000000, /* Extent AU file */ VXFS_IFAUS = 0x16000000, /* Extent AU summary file */ VXFS_IFDEV = 0x17000000, /* Device config file */ }; #define VXFS_TYPE_MASK 0xfffff000 #define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type)) #define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO) #define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR) #define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR) #define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM) #define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK) #define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK) #define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG) #define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP) #define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC) #define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH) #define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT) /* * Inmode organisation types. */ enum { VXFS_ORG_NONE = 0, /* Inode has *no* format ?!? */ VXFS_ORG_EXT4 = 1, /* Ext4 */ VXFS_ORG_IMMED = 2, /* All data stored in inode */ VXFS_ORG_TYPED = 3, /* Typed extents */ }; #define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org)) #define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE) #define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4) #define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED) #define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED) /* * Get filesystem private data from VFS inode. */ #define VXFS_INO(ip) \ ((struct vxfs_inode_info *)(ip)->u.generic_ip) /* * Get filesystem private data from VFS superblock. */ #define VXFS_SBI(sbp) \ ((struct vxfs_sb_info *)(sbp)->s_fs_info) #endif /* _VXFS_SUPER_H_ */