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282 lines
9.6 KiB
282 lines
9.6 KiB
/* |
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* Copyright (c) 2000-2001 Christoph Hellwig. |
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* Copyright (c) 2016 Krzysztof Blaszkowski |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions, and the following disclaimer, |
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* without modification. |
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* 2. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* Alternatively, this software may be distributed under the terms of the |
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* GNU General Public License ("GPL"). |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR |
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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*/ |
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#ifndef _VXFS_SUPER_H_ |
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#define _VXFS_SUPER_H_ |
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/* |
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* Veritas filesystem driver - superblock structure. |
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* |
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* This file contains the definition of the disk and core |
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* superblocks of the Veritas Filesystem. |
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*/ |
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#include <linux/types.h> |
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/* |
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* Superblock magic number (vxfs_super->vs_magic). |
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*/ |
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#define VXFS_SUPER_MAGIC 0xa501FCF5 |
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/* |
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* The root inode. |
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*/ |
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#define VXFS_ROOT_INO 2 |
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/* |
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* Num of entries in free extent array |
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*/ |
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#define VXFS_NEFREE 32 |
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enum vxfs_byte_order { |
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VXFS_BO_LE, |
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VXFS_BO_BE, |
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}; |
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typedef __u16 __bitwise __fs16; |
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typedef __u32 __bitwise __fs32; |
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typedef __u64 __bitwise __fs64; |
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/* |
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* VxFS superblock (disk). |
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*/ |
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struct vxfs_sb { |
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/* |
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* Readonly fields for the version 1 superblock. |
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* |
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* Lots of this fields are no more used by version 2 |
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* and never filesystems. |
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*/ |
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__fs32 vs_magic; /* Magic number */ |
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__fs32 vs_version; /* VxFS version */ |
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__fs32 vs_ctime; /* create time - secs */ |
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__fs32 vs_cutime; /* create time - usecs */ |
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__fs32 __unused1; /* unused */ |
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__fs32 __unused2; /* unused */ |
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__fs32 vs_old_logstart; /* obsolete */ |
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__fs32 vs_old_logend; /* obsolete */ |
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__fs32 vs_bsize; /* block size */ |
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__fs32 vs_size; /* number of blocks */ |
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__fs32 vs_dsize; /* number of data blocks */ |
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__fs32 vs_old_ninode; /* obsolete */ |
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__fs32 vs_old_nau; /* obsolete */ |
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__fs32 __unused3; /* unused */ |
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__fs32 vs_old_defiextsize; /* obsolete */ |
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__fs32 vs_old_ilbsize; /* obsolete */ |
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__fs32 vs_immedlen; /* size of immediate data area */ |
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__fs32 vs_ndaddr; /* number of direct extentes */ |
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__fs32 vs_firstau; /* address of first AU */ |
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__fs32 vs_emap; /* offset of extent map in AU */ |
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__fs32 vs_imap; /* offset of inode map in AU */ |
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__fs32 vs_iextop; /* offset of ExtOp. map in AU */ |
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__fs32 vs_istart; /* offset of inode list in AU */ |
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__fs32 vs_bstart; /* offset of fdblock in AU */ |
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__fs32 vs_femap; /* aufirst + emap */ |
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__fs32 vs_fimap; /* aufirst + imap */ |
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__fs32 vs_fiextop; /* aufirst + iextop */ |
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__fs32 vs_fistart; /* aufirst + istart */ |
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__fs32 vs_fbstart; /* aufirst + bstart */ |
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__fs32 vs_nindir; /* number of entries in indir */ |
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__fs32 vs_aulen; /* length of AU in blocks */ |
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__fs32 vs_auimlen; /* length of imap in blocks */ |
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__fs32 vs_auemlen; /* length of emap in blocks */ |
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__fs32 vs_auilen; /* length of ilist in blocks */ |
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__fs32 vs_aupad; /* length of pad in blocks */ |
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__fs32 vs_aublocks; /* data blocks in AU */ |
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__fs32 vs_maxtier; /* log base 2 of aublocks */ |
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__fs32 vs_inopb; /* number of inodes per blk */ |
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__fs32 vs_old_inopau; /* obsolete */ |
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__fs32 vs_old_inopilb; /* obsolete */ |
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__fs32 vs_old_ndiripau; /* obsolete */ |
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__fs32 vs_iaddrlen; /* size of indirect addr ext. */ |
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__fs32 vs_bshift; /* log base 2 of bsize */ |
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__fs32 vs_inoshift; /* log base 2 of inobp */ |
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__fs32 vs_bmask; /* ~( bsize - 1 ) */ |
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__fs32 vs_boffmask; /* bsize - 1 */ |
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__fs32 vs_old_inomask; /* old_inopilb - 1 */ |
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__fs32 vs_checksum; /* checksum of V1 data */ |
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/* |
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* Version 1, writable |
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*/ |
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__fs32 vs_free; /* number of free blocks */ |
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__fs32 vs_ifree; /* number of free inodes */ |
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__fs32 vs_efree[VXFS_NEFREE]; /* number of free extents by size */ |
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__fs32 vs_flags; /* flags ?!? */ |
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__u8 vs_mod; /* filesystem has been changed */ |
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__u8 vs_clean; /* clean FS */ |
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__fs16 __unused4; /* unused */ |
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__fs32 vs_firstlogid; /* mount time log ID */ |
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__fs32 vs_wtime; /* last time written - sec */ |
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__fs32 vs_wutime; /* last time written - usec */ |
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__u8 vs_fname[6]; /* FS name */ |
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__u8 vs_fpack[6]; /* FS pack name */ |
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__fs32 vs_logversion; /* log format version */ |
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__u32 __unused5; /* unused */ |
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/* |
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* Version 2, Read-only |
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*/ |
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__fs32 vs_oltext[2]; /* OLT extent and replica */ |
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__fs32 vs_oltsize; /* OLT extent size */ |
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__fs32 vs_iauimlen; /* size of inode map */ |
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__fs32 vs_iausize; /* size of IAU in blocks */ |
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__fs32 vs_dinosize; /* size of inode in bytes */ |
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__fs32 vs_old_dniaddr; /* indir levels per inode */ |
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__fs32 vs_checksum2; /* checksum of V2 RO */ |
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/* |
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* Actually much more... |
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*/ |
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}; |
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/* |
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* In core superblock filesystem private data for VxFS. |
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*/ |
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struct vxfs_sb_info { |
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struct vxfs_sb *vsi_raw; /* raw (on disk) superblock */ |
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struct buffer_head *vsi_bp; /* buffer for raw superblock*/ |
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struct inode *vsi_fship; /* fileset header inode */ |
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struct inode *vsi_ilist; /* inode list inode */ |
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struct inode *vsi_stilist; /* structural inode list inode */ |
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u_long vsi_iext; /* initial inode list */ |
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ino_t vsi_fshino; /* fileset header inode */ |
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daddr_t vsi_oltext; /* OLT extent */ |
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daddr_t vsi_oltsize; /* OLT size */ |
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enum vxfs_byte_order byte_order; |
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}; |
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static inline u16 fs16_to_cpu(struct vxfs_sb_info *sbi, __fs16 a) |
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{ |
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if (sbi->byte_order == VXFS_BO_BE) |
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return be16_to_cpu((__force __be16)a); |
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else |
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return le16_to_cpu((__force __le16)a); |
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} |
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static inline u32 fs32_to_cpu(struct vxfs_sb_info *sbi, __fs32 a) |
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{ |
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if (sbi->byte_order == VXFS_BO_BE) |
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return be32_to_cpu((__force __be32)a); |
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else |
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return le32_to_cpu((__force __le32)a); |
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} |
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static inline u64 fs64_to_cpu(struct vxfs_sb_info *sbi, __fs64 a) |
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{ |
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if (sbi->byte_order == VXFS_BO_BE) |
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return be64_to_cpu((__force __be64)a); |
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else |
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return le64_to_cpu((__force __le64)a); |
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} |
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/* |
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* File modes. File types above 0xf000 are vxfs internal only, they should |
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* not be passed back to higher levels of the system. vxfs file types must |
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* never have one of the regular file type bits set. |
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*/ |
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enum vxfs_mode { |
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VXFS_ISUID = 0x00000800, /* setuid */ |
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VXFS_ISGID = 0x00000400, /* setgid */ |
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VXFS_ISVTX = 0x00000200, /* sticky bit */ |
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VXFS_IREAD = 0x00000100, /* read */ |
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VXFS_IWRITE = 0x00000080, /* write */ |
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VXFS_IEXEC = 0x00000040, /* exec */ |
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VXFS_IFIFO = 0x00001000, /* Named pipe */ |
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VXFS_IFCHR = 0x00002000, /* Character device */ |
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VXFS_IFDIR = 0x00004000, /* Directory */ |
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VXFS_IFNAM = 0x00005000, /* Xenix device ?? */ |
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VXFS_IFBLK = 0x00006000, /* Block device */ |
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VXFS_IFREG = 0x00008000, /* Regular file */ |
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VXFS_IFCMP = 0x00009000, /* Compressed file ?!? */ |
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VXFS_IFLNK = 0x0000a000, /* Symlink */ |
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VXFS_IFSOC = 0x0000c000, /* Socket */ |
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/* VxFS internal */ |
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VXFS_IFFSH = 0x10000000, /* Fileset header */ |
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VXFS_IFILT = 0x20000000, /* Inode list */ |
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VXFS_IFIAU = 0x30000000, /* Inode allocation unit */ |
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VXFS_IFCUT = 0x40000000, /* Current usage table */ |
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VXFS_IFATT = 0x50000000, /* Attr. inode */ |
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VXFS_IFLCT = 0x60000000, /* Link count table */ |
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VXFS_IFIAT = 0x70000000, /* Indirect attribute file */ |
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VXFS_IFEMR = 0x80000000, /* Extent map reorg file */ |
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VXFS_IFQUO = 0x90000000, /* BSD quota file */ |
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VXFS_IFPTI = 0xa0000000, /* "Pass through" inode */ |
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VXFS_IFLAB = 0x11000000, /* Device label file */ |
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VXFS_IFOLT = 0x12000000, /* OLT file */ |
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VXFS_IFLOG = 0x13000000, /* Log file */ |
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VXFS_IFEMP = 0x14000000, /* Extent map file */ |
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VXFS_IFEAU = 0x15000000, /* Extent AU file */ |
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VXFS_IFAUS = 0x16000000, /* Extent AU summary file */ |
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VXFS_IFDEV = 0x17000000, /* Device config file */ |
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}; |
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#define VXFS_TYPE_MASK 0xfffff000 |
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#define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type)) |
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#define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO) |
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#define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR) |
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#define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR) |
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#define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM) |
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#define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK) |
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#define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK) |
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#define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG) |
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#define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP) |
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#define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC) |
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#define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH) |
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#define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT) |
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/* |
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* Inmode organisation types. |
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*/ |
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enum { |
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VXFS_ORG_NONE = 0, /* Inode has *no* format ?!? */ |
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VXFS_ORG_EXT4 = 1, /* Ext4 */ |
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VXFS_ORG_IMMED = 2, /* All data stored in inode */ |
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VXFS_ORG_TYPED = 3, /* Typed extents */ |
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}; |
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#define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org)) |
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#define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE) |
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#define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4) |
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#define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED) |
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#define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED) |
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/* |
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* Get filesystem private data from VFS superblock. |
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*/ |
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#define VXFS_SBI(sbp) \ |
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((struct vxfs_sb_info *)(sbp)->s_fs_info) |
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#endif /* _VXFS_SUPER_H_ */
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