LXR linux/fs/xfs/libxfs/xfs_inode

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
   4 * All Rights Reserved.
   5 */
   6#ifndef __XFS_INODE_BUF_H__
   7#define __XFS_INODE_BUF_H__
   8
   9struct xfs_inode;
  10struct xfs_dinode;
  11
  12/*
  13 * In memory representation of the XFS inode. This is held in the in-core struct
  14 * xfs_inode and represents the current on disk values but the structure is not
  15 * in on-disk format.  That is, this structure is always translated to on-disk
  16 * format specific structures at the appropriate time.
  17 */
  18struct xfs_icdinode {
  19        int8_t          di_version;     /* inode version */
  20        int8_t          di_format;      /* format of di_c data */
  21        uint16_t        di_flushiter;   /* incremented on flush */
  22        uint32_t        di_uid;         /* owner's user id */
  23        uint32_t        di_gid;         /* owner's group id */
  24        uint16_t        di_projid_lo;   /* lower part of owner's project id */
  25        uint16_t        di_projid_hi;   /* higher part of owner's project id */
  26        xfs_fsize_t     di_size;        /* number of bytes in file */
  27        xfs_rfsblock_t  di_nblocks;     /* # of direct & btree blocks used */
  28        xfs_extlen_t    di_extsize;     /* basic/minimum extent size for file */
  29        xfs_extnum_t    di_nextents;    /* number of extents in data fork */
  30        xfs_aextnum_t   di_anextents;   /* number of extents in attribute fork*/
  31        uint8_t         di_forkoff;     /* attr fork offs, <<3 for 64b align */
  32        int8_t          di_aformat;     /* format of attr fork's data */
  33        uint32_t        di_dmevmask;    /* DMIG event mask */
  34        uint16_t        di_dmstate;     /* DMIG state info */
  35        uint16_t        di_flags;       /* random flags, XFS_DIFLAG_... */
  36
  37        uint64_t        di_flags2;      /* more random flags */
  38        uint32_t        di_cowextsize;  /* basic cow extent size for file */
  39
  40        xfs_ictimestamp_t di_crtime;    /* time created */
  41};
  42
  43/*
  44 * Inode location information.  Stored in the inode and passed to
  45 * xfs_imap_to_bp() to get a buffer and dinode for a given inode.
  46 */
  47struct xfs_imap {
  48        xfs_daddr_t     im_blkno;       /* starting BB of inode chunk */
  49        unsigned short  im_len;         /* length in BBs of inode chunk */
  50        unsigned short  im_boffset;     /* inode offset in block in bytes */
  51};
  52
  53int     xfs_imap_to_bp(struct xfs_mount *, struct xfs_trans *,
  54                       struct xfs_imap *, struct xfs_dinode **,
  55                       struct xfs_buf **, uint, uint);
  56int     xfs_iread(struct xfs_mount *, struct xfs_trans *,
  57                  struct xfs_inode *, uint);
  58void    xfs_dinode_calc_crc(struct xfs_mount *, struct xfs_dinode *);
  59void    xfs_inode_to_disk(struct xfs_inode *ip, struct xfs_dinode *to,
  60                          xfs_lsn_t lsn);
  61void    xfs_inode_from_disk(struct xfs_inode *ip, struct xfs_dinode *from);
  62void    xfs_log_dinode_to_disk(struct xfs_log_dinode *from,
  63                               struct xfs_dinode *to);
  64
  65bool    xfs_dinode_good_version(struct xfs_mount *mp, __u8 version);
  66
  67#if defined(DEBUG)
  68void    xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
  69#else
  70#define xfs_inobp_check(mp, bp)
  71#endif /* DEBUG */
  72
  73xfs_failaddr_t xfs_dinode_verify(struct xfs_mount *mp, xfs_ino_t ino,
  74                           struct xfs_dinode *dip);
  75xfs_failaddr_t xfs_inode_validate_extsize(struct xfs_mount *mp,
  76                uint32_t extsize, uint16_t mode, uint16_t flags);
  77xfs_failaddr_t xfs_inode_validate_cowextsize(struct xfs_mount *mp,
  78                uint32_t cowextsize, uint16_t mode, uint16_t flags,
  79                uint64_t flags2);
  80
  81#endif  /* __XFS_INODE_BUF_H__ */
  82