xfs
[Top] [All Lists]

Re: [PATCH 08/32] xfs: create a shared header file for format-related in

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 08/32] xfs: create a shared header file for format-related information
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Tue, 08 Oct 2013 18:37:21 -0500
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1380510944-8571-9-git-send-email-david@xxxxxxxxxxxxx>
References: <1380510944-8571-1-git-send-email-david@xxxxxxxxxxxxx> <1380510944-8571-9-git-send-email-david@xxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130801 Thunderbird/17.0.8
On 9/29/13 10:15 PM, Dave Chinner wrote:
> All of the buffer operations structures are needed to be exported
> for xfs_db, so move them all to a common location rather than
> spreading them all over the place. They are verifying the on-disk
> format, so while xfs_format.h might be a good place, it is not part
> of the on disk format.
> 
> Hence we need to create a new header file that we centralise these
> related definitions. Start by moving the bffer operations
> structures, and then also move all the other definitions that have
> crept into xfs_log_format.h and xfs_format.h as there was no other
> shared header file to put them in.
> 
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>

All lines present & accounted for in new file.  ;)

Would be nice to fix:

"* This determine how hard the buffer cache tries to hold onto"

while you're at it, but *shrug*

Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>

> ---
>  include/Makefile           |   1 +
>  include/libxfs.h           |   1 +
>  include/xfs_ag.h           |   4 -
>  include/xfs_alloc.h        |   3 -
>  include/xfs_alloc_btree.h  |   2 -
>  include/xfs_attr_leaf.h    |   2 -
>  include/xfs_attr_remote.h  |   2 -
>  include/xfs_bmap_btree.h   |   2 -
>  include/xfs_da_btree.h     |   2 -
>  include/xfs_format.h       |  10 --
>  include/xfs_ialloc.h       |   2 -
>  include/xfs_ialloc_btree.h |   2 -
>  include/xfs_inode_buf.h    |   2 -
>  include/xfs_log_format.h   | 177 --------------------------------
>  include/xfs_sb.h           |   3 -
>  include/xfs_shared.h       | 244 
> +++++++++++++++++++++++++++++++++++++++++++++
>  16 files changed, 246 insertions(+), 213 deletions(-)
>  create mode 100644 include/xfs_shared.h
> 
> diff --git a/include/Makefile b/include/Makefile
> index 628a087..fd2d61b 100644
> --- a/include/Makefile
> +++ b/include/Makefile
> @@ -38,6 +38,7 @@ QAHFILES = libxfs.h libxlog.h \
>       xfs_metadump.h \
>       xfs_quota_defs.h \
>       xfs_sb.h \
> +     xfs_shared.h \
>       xfs_trace.h \
>       xfs_trans_resv.h \
>       xfs_trans_space.h
> diff --git a/include/libxfs.h b/include/libxfs.h
> index ffd83bf..a5d6388 100644
> --- a/include/libxfs.h
> +++ b/include/libxfs.h
> @@ -37,6 +37,7 @@
>  #include <xfs/xfs_fs.h>
>  #include <xfs/xfs_arch.h>
>  
> +#include <xfs/xfs_shared.h>
>  #include <xfs/xfs_format.h>
>  #include <xfs/xfs_log_format.h>
>  #include <xfs/xfs_quota_defs.h>
> diff --git a/include/xfs_ag.h b/include/xfs_ag.h
> index 1cb740a..3fc1098 100644
> --- a/include/xfs_ag.h
> +++ b/include/xfs_ag.h
> @@ -128,8 +128,6 @@ typedef struct xfs_agf {
>  extern int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp,
>                       xfs_agnumber_t agno, int flags, struct xfs_buf **bpp);
>  
> -extern const struct xfs_buf_ops xfs_agf_buf_ops;
> -
>  /*
>   * Size of the unlinked inode hash table in the agi.
>   */
> @@ -191,8 +189,6 @@ typedef struct xfs_agi {
>  extern int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp,
>                               xfs_agnumber_t agno, struct xfs_buf **bpp);
>  
> -extern const struct xfs_buf_ops xfs_agi_buf_ops;
> -
>  /*
>   * The third a.g. block contains the a.g. freelist, an array
>   * of block pointers to blocks owned by the allocation btree code.
> diff --git a/include/xfs_alloc.h b/include/xfs_alloc.h
> index 99d0a61..feacb06 100644
> --- a/include/xfs_alloc.h
> +++ b/include/xfs_alloc.h
> @@ -231,7 +231,4 @@ xfs_alloc_get_rec(
>       xfs_extlen_t            *len,   /* output: length of extent */
>       int                     *stat); /* output: success/failure */
>  
> -extern const struct xfs_buf_ops xfs_agf_buf_ops;
> -extern const struct xfs_buf_ops xfs_agfl_buf_ops;
> -
>  #endif       /* __XFS_ALLOC_H__ */
> diff --git a/include/xfs_alloc_btree.h b/include/xfs_alloc_btree.h
> index e3a3f74..72676c3 100644
> --- a/include/xfs_alloc_btree.h
> +++ b/include/xfs_alloc_btree.h
> @@ -95,6 +95,4 @@ extern struct xfs_btree_cur *xfs_allocbt_init_cursor(struct 
> xfs_mount *,
>               xfs_agnumber_t, xfs_btnum_t);
>  extern int xfs_allocbt_maxrecs(struct xfs_mount *, int, int);
>  
> -extern const struct xfs_buf_ops xfs_allocbt_buf_ops;
> -
>  #endif       /* __XFS_ALLOC_BTREE_H__ */
> diff --git a/include/xfs_attr_leaf.h b/include/xfs_attr_leaf.h
> index c102213..da34e64 100644
> --- a/include/xfs_attr_leaf.h
> +++ b/include/xfs_attr_leaf.h
> @@ -336,6 +336,4 @@ void      xfs_attr3_leaf_hdr_from_disk(struct 
> xfs_attr3_icleaf_hdr *to,
>  void xfs_attr3_leaf_hdr_to_disk(struct xfs_attr_leafblock *to,
>                                  struct xfs_attr3_icleaf_hdr *from);
>  
> -extern const struct xfs_buf_ops xfs_attr3_leaf_buf_ops;
> -
>  #endif       /* __XFS_ATTR_LEAF_H__ */
> diff --git a/include/xfs_attr_remote.h b/include/xfs_attr_remote.h
> index 92a8fd7..b3e1e1b 100644
> --- a/include/xfs_attr_remote.h
> +++ b/include/xfs_attr_remote.h
> @@ -45,8 +45,6 @@ struct xfs_attr3_rmt_hdr {
>       ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \
>                       sizeof(struct xfs_attr3_rmt_hdr) : 0))
>  
> -extern const struct xfs_buf_ops xfs_attr3_rmt_buf_ops;
> -
>  int xfs_attr3_rmt_blocks(struct xfs_mount *mp, int attrlen);
>  
>  int xfs_attr_rmtval_get(struct xfs_da_args *args);
> diff --git a/include/xfs_bmap_btree.h b/include/xfs_bmap_btree.h
> index 1b726d6..e307978 100644
> --- a/include/xfs_bmap_btree.h
> +++ b/include/xfs_bmap_btree.h
> @@ -239,6 +239,4 @@ extern int xfs_bmbt_maxrecs(struct xfs_mount *, int 
> blocklen, int leaf);
>  extern struct xfs_btree_cur *xfs_bmbt_init_cursor(struct xfs_mount *,
>               struct xfs_trans *, struct xfs_inode *, int);
>  
> -extern const struct xfs_buf_ops xfs_bmbt_buf_ops;
> -
>  #endif       /* __XFS_BMAP_BTREE_H__ */
> diff --git a/include/xfs_da_btree.h b/include/xfs_da_btree.h
> index b1f2679..a762cfa 100644
> --- a/include/xfs_da_btree.h
> +++ b/include/xfs_da_btree.h
> @@ -309,8 +309,6 @@ int       xfs_da3_node_read(struct xfs_trans *tp, struct 
> xfs_inode *dp,
>                        xfs_dablk_t bno, xfs_daddr_t mappedbno,
>                        struct xfs_buf **bpp, int which_fork);
>  
> -extern const struct xfs_buf_ops xfs_da3_node_buf_ops;
> -
>  /*
>   * Utility routines.
>   */
> diff --git a/include/xfs_format.h b/include/xfs_format.h
> index 35c08ff..a790428 100644
> --- a/include/xfs_format.h
> +++ b/include/xfs_format.h
> @@ -156,14 +156,4 @@ struct xfs_dsymlink_hdr {
>       ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \
>                       sizeof(struct xfs_dsymlink_hdr) : 0))
>  
> -int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen);
> -int xfs_symlink_hdr_set(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
> -                     uint32_t size, struct xfs_buf *bp);
> -bool xfs_symlink_hdr_ok(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
> -                     uint32_t size, struct xfs_buf *bp);
> -void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp,
> -                              struct xfs_inode *ip, struct xfs_ifork *ifp);
> -
> -extern const struct xfs_buf_ops xfs_symlink_buf_ops;
> -
>  #endif /* __XFS_FORMAT_H__ */
> diff --git a/include/xfs_ialloc.h b/include/xfs_ialloc.h
> index 68c0732..1557798 100644
> --- a/include/xfs_ialloc.h
> +++ b/include/xfs_ialloc.h
> @@ -158,6 +158,4 @@ int xfs_ialloc_inode_init(struct xfs_mount *mp, struct 
> xfs_trans *tp,
>                         xfs_agnumber_t agno, xfs_agblock_t agbno,
>                         xfs_agblock_t length, unsigned int gen);
>  
> -extern const struct xfs_buf_ops xfs_agi_buf_ops;
> -
>  #endif       /* __XFS_IALLOC_H__ */
> diff --git a/include/xfs_ialloc_btree.h b/include/xfs_ialloc_btree.h
> index 3ac36b7..cfbfe46 100644
> --- a/include/xfs_ialloc_btree.h
> +++ b/include/xfs_ialloc_btree.h
> @@ -110,6 +110,4 @@ extern struct xfs_btree_cur *xfs_inobt_init_cursor(struct 
> xfs_mount *,
>               struct xfs_trans *, struct xfs_buf *, xfs_agnumber_t);
>  extern int xfs_inobt_maxrecs(struct xfs_mount *, int, int);
>  
> -extern const struct xfs_buf_ops xfs_inobt_buf_ops;
> -
>  #endif       /* __XFS_IALLOC_BTREE_H__ */
> diff --git a/include/xfs_inode_buf.h b/include/xfs_inode_buf.h
> index aae9fc4..e8fd3bd 100644
> --- a/include/xfs_inode_buf.h
> +++ b/include/xfs_inode_buf.h
> @@ -47,6 +47,4 @@ void                xfs_inobp_check(struct xfs_mount *, 
> struct xfs_buf *);
>  #define      xfs_inobp_check(mp, bp)
>  #endif /* DEBUG */
>  
> -extern const struct xfs_buf_ops xfs_inode_buf_ops;
> -
>  #endif       /* __XFS_INODE_BUF_H__ */
> diff --git a/include/xfs_log_format.h b/include/xfs_log_format.h
> index 31e3a06..aeaa715 100644
> --- a/include/xfs_log_format.h
> +++ b/include/xfs_log_format.h
> @@ -234,178 +234,6 @@ typedef struct xfs_trans_header {
>       { XFS_LI_ICREATE,       "XFS_LI_ICREATE" }
>  
>  /*
> - * Transaction types.  Used to distinguish types of buffers.
> - */
> -#define XFS_TRANS_SETATTR_NOT_SIZE   1
> -#define XFS_TRANS_SETATTR_SIZE               2
> -#define XFS_TRANS_INACTIVE           3
> -#define XFS_TRANS_CREATE             4
> -#define XFS_TRANS_CREATE_TRUNC               5
> -#define XFS_TRANS_TRUNCATE_FILE              6
> -#define XFS_TRANS_REMOVE             7
> -#define XFS_TRANS_LINK                       8
> -#define XFS_TRANS_RENAME             9
> -#define XFS_TRANS_MKDIR                      10
> -#define XFS_TRANS_RMDIR                      11
> -#define XFS_TRANS_SYMLINK            12
> -#define XFS_TRANS_SET_DMATTRS                13
> -#define XFS_TRANS_GROWFS             14
> -#define XFS_TRANS_STRAT_WRITE                15
> -#define XFS_TRANS_DIOSTRAT           16
> -/* 17 was XFS_TRANS_WRITE_SYNC */
> -#define      XFS_TRANS_WRITEID               18
> -#define      XFS_TRANS_ADDAFORK              19
> -#define      XFS_TRANS_ATTRINVAL             20
> -#define      XFS_TRANS_ATRUNCATE             21
> -#define      XFS_TRANS_ATTR_SET              22
> -#define      XFS_TRANS_ATTR_RM               23
> -#define      XFS_TRANS_ATTR_FLAG             24
> -#define      XFS_TRANS_CLEAR_AGI_BUCKET      25
> -#define XFS_TRANS_QM_SBCHANGE                26
> -/*
> - * Dummy entries since we use the transaction type to index into the
> - * trans_type[] in xlog_recover_print_trans_head()
> - */
> -#define XFS_TRANS_DUMMY1             27
> -#define XFS_TRANS_DUMMY2             28
> -#define XFS_TRANS_QM_QUOTAOFF                29
> -#define XFS_TRANS_QM_DQALLOC         30
> -#define XFS_TRANS_QM_SETQLIM         31
> -#define XFS_TRANS_QM_DQCLUSTER               32
> -#define XFS_TRANS_QM_QINOCREATE              33
> -#define XFS_TRANS_QM_QUOTAOFF_END    34
> -#define XFS_TRANS_SB_UNIT            35
> -#define XFS_TRANS_FSYNC_TS           36
> -#define      XFS_TRANS_GROWFSRT_ALLOC        37
> -#define      XFS_TRANS_GROWFSRT_ZERO         38
> -#define      XFS_TRANS_GROWFSRT_FREE         39
> -#define      XFS_TRANS_SWAPEXT               40
> -#define      XFS_TRANS_SB_COUNT              41
> -#define      XFS_TRANS_CHECKPOINT            42
> -#define      XFS_TRANS_ICREATE               43
> -#define      XFS_TRANS_TYPE_MAX              43
> -/* new transaction types need to be reflected in xfs_logprint(8) */
> -
> -#define XFS_TRANS_TYPES \
> -     { XFS_TRANS_SETATTR_NOT_SIZE,   "SETATTR_NOT_SIZE" }, \
> -     { XFS_TRANS_SETATTR_SIZE,       "SETATTR_SIZE" }, \
> -     { XFS_TRANS_INACTIVE,           "INACTIVE" }, \
> -     { XFS_TRANS_CREATE,             "CREATE" }, \
> -     { XFS_TRANS_CREATE_TRUNC,       "CREATE_TRUNC" }, \
> -     { XFS_TRANS_TRUNCATE_FILE,      "TRUNCATE_FILE" }, \
> -     { XFS_TRANS_REMOVE,             "REMOVE" }, \
> -     { XFS_TRANS_LINK,               "LINK" }, \
> -     { XFS_TRANS_RENAME,             "RENAME" }, \
> -     { XFS_TRANS_MKDIR,              "MKDIR" }, \
> -     { XFS_TRANS_RMDIR,              "RMDIR" }, \
> -     { XFS_TRANS_SYMLINK,            "SYMLINK" }, \
> -     { XFS_TRANS_SET_DMATTRS,        "SET_DMATTRS" }, \
> -     { XFS_TRANS_GROWFS,             "GROWFS" }, \
> -     { XFS_TRANS_STRAT_WRITE,        "STRAT_WRITE" }, \
> -     { XFS_TRANS_DIOSTRAT,           "DIOSTRAT" }, \
> -     { XFS_TRANS_WRITEID,            "WRITEID" }, \
> -     { XFS_TRANS_ADDAFORK,           "ADDAFORK" }, \
> -     { XFS_TRANS_ATTRINVAL,          "ATTRINVAL" }, \
> -     { XFS_TRANS_ATRUNCATE,          "ATRUNCATE" }, \
> -     { XFS_TRANS_ATTR_SET,           "ATTR_SET" }, \
> -     { XFS_TRANS_ATTR_RM,            "ATTR_RM" }, \
> -     { XFS_TRANS_ATTR_FLAG,          "ATTR_FLAG" }, \
> -     { XFS_TRANS_CLEAR_AGI_BUCKET,   "CLEAR_AGI_BUCKET" }, \
> -     { XFS_TRANS_QM_SBCHANGE,        "QM_SBCHANGE" }, \
> -     { XFS_TRANS_QM_QUOTAOFF,        "QM_QUOTAOFF" }, \
> -     { XFS_TRANS_QM_DQALLOC,         "QM_DQALLOC" }, \
> -     { XFS_TRANS_QM_SETQLIM,         "QM_SETQLIM" }, \
> -     { XFS_TRANS_QM_DQCLUSTER,       "QM_DQCLUSTER" }, \
> -     { XFS_TRANS_QM_QINOCREATE,      "QM_QINOCREATE" }, \
> -     { XFS_TRANS_QM_QUOTAOFF_END,    "QM_QOFF_END" }, \
> -     { XFS_TRANS_SB_UNIT,            "SB_UNIT" }, \
> -     { XFS_TRANS_FSYNC_TS,           "FSYNC_TS" }, \
> -     { XFS_TRANS_GROWFSRT_ALLOC,     "GROWFSRT_ALLOC" }, \
> -     { XFS_TRANS_GROWFSRT_ZERO,      "GROWFSRT_ZERO" }, \
> -     { XFS_TRANS_GROWFSRT_FREE,      "GROWFSRT_FREE" }, \
> -     { XFS_TRANS_SWAPEXT,            "SWAPEXT" }, \
> -     { XFS_TRANS_SB_COUNT,           "SB_COUNT" }, \
> -     { XFS_TRANS_CHECKPOINT,         "CHECKPOINT" }, \
> -     { XFS_TRANS_DUMMY1,             "DUMMY1" }, \
> -     { XFS_TRANS_DUMMY2,             "DUMMY2" }, \
> -     { XLOG_UNMOUNT_REC_TYPE,        "UNMOUNT" }
> -
> -/*
> - * This structure is used to track log items associated with
> - * a transaction.  It points to the log item and keeps some
> - * flags to track the state of the log item.  It also tracks
> - * the amount of space needed to log the item it describes
> - * once we get to commit processing (see xfs_trans_commit()).
> - */
> -struct xfs_log_item_desc {
> -     struct xfs_log_item     *lid_item;
> -     struct list_head        lid_trans;
> -     unsigned char           lid_flags;
> -};
> -
> -#define XFS_LID_DIRTY                0x1
> -
> -/*
> - * Values for t_flags.
> - */
> -#define      XFS_TRANS_DIRTY         0x01    /* something needs to be logged 
> */
> -#define      XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
> -#define      XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log 
> res */
> -#define      XFS_TRANS_SYNC          0x08    /* make commit synchronous */
> -#define XFS_TRANS_DQ_DIRTY   0x10    /* at least one dquot in trx dirty */
> -#define XFS_TRANS_RESERVE    0x20    /* OK to use reserved data blocks */
> -#define XFS_TRANS_FREEZE_PROT        0x40    /* Transaction has elevated 
> writer
> -                                        count in superblock */
> -
> -/*
> - * Values for call flags parameter.
> - */
> -#define      XFS_TRANS_RELEASE_LOG_RES       0x4
> -#define      XFS_TRANS_ABORT                 0x8
> -
> -/*
> - * Field values for xfs_trans_mod_sb.
> - */
> -#define      XFS_TRANS_SB_ICOUNT             0x00000001
> -#define      XFS_TRANS_SB_IFREE              0x00000002
> -#define      XFS_TRANS_SB_FDBLOCKS           0x00000004
> -#define      XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
> -#define      XFS_TRANS_SB_FREXTENTS          0x00000010
> -#define      XFS_TRANS_SB_RES_FREXTENTS      0x00000020
> -#define      XFS_TRANS_SB_DBLOCKS            0x00000040
> -#define      XFS_TRANS_SB_AGCOUNT            0x00000080
> -#define      XFS_TRANS_SB_IMAXPCT            0x00000100
> -#define      XFS_TRANS_SB_REXTSIZE           0x00000200
> -#define      XFS_TRANS_SB_RBMBLOCKS          0x00000400
> -#define      XFS_TRANS_SB_RBLOCKS            0x00000800
> -#define      XFS_TRANS_SB_REXTENTS           0x00001000
> -#define      XFS_TRANS_SB_REXTSLOG           0x00002000
> -
> -/*
> - * Here we centralize the specification of XFS meta-data buffer
> - * reference count values.  This determine how hard the buffer
> - * cache tries to hold onto the buffer.
> - */
> -#define      XFS_AGF_REF             4
> -#define      XFS_AGI_REF             4
> -#define      XFS_AGFL_REF            3
> -#define      XFS_INO_BTREE_REF       3
> -#define      XFS_ALLOC_BTREE_REF     2
> -#define      XFS_BMAP_BTREE_REF      2
> -#define      XFS_DIR_BTREE_REF       2
> -#define      XFS_INO_REF             2
> -#define      XFS_ATTR_BTREE_REF      1
> -#define      XFS_DQUOT_REF           1
> -
> -/*
> - * Flags for xfs_trans_ichgtime().
> - */
> -#define      XFS_ICHGTIME_MOD        0x1     /* data fork modification 
> timestamp */
> -#define      XFS_ICHGTIME_CHG        0x2     /* inode field change timestamp 
> */
> -#define      XFS_ICHGTIME_CREATE     0x4     /* inode create timestamp */
> -
> -
> -/*
>   * Inode Log Item Format definitions.
>   *
>   * This is the structure used to lay out an inode log item in the
> @@ -793,7 +621,6 @@ typedef struct xfs_qoff_logformat {
>       char                    qf_pad[12];     /* padding for future */
>  } xfs_qoff_logformat_t;
>  
> -
>  /*
>   * Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
>   */
> @@ -845,8 +672,4 @@ struct xfs_icreate_log {
>       __be32          icl_gen;        /* inode generation number to use */
>  };
>  
> -int  xfs_log_calc_unit_res(struct xfs_mount *mp, int unit_bytes);
> -int  xfs_log_calc_minimum_size(struct xfs_mount *);
> -
> -
>  #endif /* __XFS_LOG_FORMAT_H__ */
> diff --git a/include/xfs_sb.h b/include/xfs_sb.h
> index c8d8898..741b7a3 100644
> --- a/include/xfs_sb.h
> +++ b/include/xfs_sb.h
> @@ -695,7 +695,4 @@ extern void       xfs_sb_from_disk(struct xfs_sb *, 
> struct xfs_dsb *);
>  extern void  xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
>  extern void  xfs_sb_quota_from_disk(struct xfs_sb *sbp);
>  
> -extern const struct xfs_buf_ops xfs_sb_buf_ops;
> -extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops;
> -
>  #endif       /* __XFS_SB_H__ */
> diff --git a/include/xfs_shared.h b/include/xfs_shared.h
> new file mode 100644
> index 0000000..63c94b1
> --- /dev/null
> +++ b/include/xfs_shared.h
> @@ -0,0 +1,244 @@
> +/*
> + * Copyright (c) 2000-2005 Silicon Graphics, Inc.
> + * Copyright (c) 2013 Red Hat, Inc.
> + * All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it would be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write the Free Software Foundation,
> + * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
> + */
> +#ifndef __XFS_SHARED_H__
> +#define __XFS_SHARED_H__
> +
> +/*
> + * Definitions shared between kernel and userspace that don't fit into any 
> other
> + * header file that is shared with userspace.
> + */
> +struct xfs_ifork;
> +struct xfs_buf;
> +struct xfs_buf_ops;
> +struct xfs_mount;
> +struct xfs_trans;
> +struct xfs_inode;
> +
> +/*
> + * Buffer verifier operations are widely used, including userspace tools
> + */
> +extern const struct xfs_buf_ops xfs_agf_buf_ops;
> +extern const struct xfs_buf_ops xfs_agi_buf_ops;
> +extern const struct xfs_buf_ops xfs_agf_buf_ops;
> +extern const struct xfs_buf_ops xfs_agfl_buf_ops;
> +extern const struct xfs_buf_ops xfs_allocbt_buf_ops;
> +extern const struct xfs_buf_ops xfs_attr3_leaf_buf_ops;
> +extern const struct xfs_buf_ops xfs_attr3_rmt_buf_ops;
> +extern const struct xfs_buf_ops xfs_bmbt_buf_ops;
> +extern const struct xfs_buf_ops xfs_da3_node_buf_ops;
> +extern const struct xfs_buf_ops xfs_dquot_buf_ops;
> +extern const struct xfs_buf_ops xfs_symlink_buf_ops;
> +extern const struct xfs_buf_ops xfs_agi_buf_ops;
> +extern const struct xfs_buf_ops xfs_inobt_buf_ops;
> +extern const struct xfs_buf_ops xfs_inode_buf_ops;
> +extern const struct xfs_buf_ops xfs_inode_buf_ra_ops;
> +extern const struct xfs_buf_ops xfs_dquot_buf_ops;
> +extern const struct xfs_buf_ops xfs_sb_buf_ops;
> +extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops;
> +extern const struct xfs_buf_ops xfs_symlink_buf_ops;
> +
> +/*
> + * Transaction types.  Used to distinguish types of buffers. These never 
> reach
> + * the log.
> + */
> +#define XFS_TRANS_SETATTR_NOT_SIZE   1
> +#define XFS_TRANS_SETATTR_SIZE               2
> +#define XFS_TRANS_INACTIVE           3
> +#define XFS_TRANS_CREATE             4
> +#define XFS_TRANS_CREATE_TRUNC               5
> +#define XFS_TRANS_TRUNCATE_FILE              6
> +#define XFS_TRANS_REMOVE             7
> +#define XFS_TRANS_LINK                       8
> +#define XFS_TRANS_RENAME             9
> +#define XFS_TRANS_MKDIR                      10
> +#define XFS_TRANS_RMDIR                      11
> +#define XFS_TRANS_SYMLINK            12
> +#define XFS_TRANS_SET_DMATTRS                13
> +#define XFS_TRANS_GROWFS             14
> +#define XFS_TRANS_STRAT_WRITE                15
> +#define XFS_TRANS_DIOSTRAT           16
> +/* 17 was XFS_TRANS_WRITE_SYNC */
> +#define      XFS_TRANS_WRITEID               18
> +#define      XFS_TRANS_ADDAFORK              19
> +#define      XFS_TRANS_ATTRINVAL             20
> +#define      XFS_TRANS_ATRUNCATE             21
> +#define      XFS_TRANS_ATTR_SET              22
> +#define      XFS_TRANS_ATTR_RM               23
> +#define      XFS_TRANS_ATTR_FLAG             24
> +#define      XFS_TRANS_CLEAR_AGI_BUCKET      25
> +#define XFS_TRANS_QM_SBCHANGE                26
> +/*
> + * Dummy entries since we use the transaction type to index into the
> + * trans_type[] in xlog_recover_print_trans_head()
> + */
> +#define XFS_TRANS_DUMMY1             27
> +#define XFS_TRANS_DUMMY2             28
> +#define XFS_TRANS_QM_QUOTAOFF                29
> +#define XFS_TRANS_QM_DQALLOC         30
> +#define XFS_TRANS_QM_SETQLIM         31
> +#define XFS_TRANS_QM_DQCLUSTER               32
> +#define XFS_TRANS_QM_QINOCREATE              33
> +#define XFS_TRANS_QM_QUOTAOFF_END    34
> +#define XFS_TRANS_SB_UNIT            35
> +#define XFS_TRANS_FSYNC_TS           36
> +#define      XFS_TRANS_GROWFSRT_ALLOC        37
> +#define      XFS_TRANS_GROWFSRT_ZERO         38
> +#define      XFS_TRANS_GROWFSRT_FREE         39
> +#define      XFS_TRANS_SWAPEXT               40
> +#define      XFS_TRANS_SB_COUNT              41
> +#define      XFS_TRANS_CHECKPOINT            42
> +#define      XFS_TRANS_ICREATE               43
> +#define      XFS_TRANS_TYPE_MAX              43
> +/* new transaction types need to be reflected in xfs_logprint(8) */
> +
> +#define XFS_TRANS_TYPES \
> +     { XFS_TRANS_SETATTR_NOT_SIZE,   "SETATTR_NOT_SIZE" }, \
> +     { XFS_TRANS_SETATTR_SIZE,       "SETATTR_SIZE" }, \
> +     { XFS_TRANS_INACTIVE,           "INACTIVE" }, \
> +     { XFS_TRANS_CREATE,             "CREATE" }, \
> +     { XFS_TRANS_CREATE_TRUNC,       "CREATE_TRUNC" }, \
> +     { XFS_TRANS_TRUNCATE_FILE,      "TRUNCATE_FILE" }, \
> +     { XFS_TRANS_REMOVE,             "REMOVE" }, \
> +     { XFS_TRANS_LINK,               "LINK" }, \
> +     { XFS_TRANS_RENAME,             "RENAME" }, \
> +     { XFS_TRANS_MKDIR,              "MKDIR" }, \
> +     { XFS_TRANS_RMDIR,              "RMDIR" }, \
> +     { XFS_TRANS_SYMLINK,            "SYMLINK" }, \
> +     { XFS_TRANS_SET_DMATTRS,        "SET_DMATTRS" }, \
> +     { XFS_TRANS_GROWFS,             "GROWFS" }, \
> +     { XFS_TRANS_STRAT_WRITE,        "STRAT_WRITE" }, \
> +     { XFS_TRANS_DIOSTRAT,           "DIOSTRAT" }, \
> +     { XFS_TRANS_WRITEID,            "WRITEID" }, \
> +     { XFS_TRANS_ADDAFORK,           "ADDAFORK" }, \
> +     { XFS_TRANS_ATTRINVAL,          "ATTRINVAL" }, \
> +     { XFS_TRANS_ATRUNCATE,          "ATRUNCATE" }, \
> +     { XFS_TRANS_ATTR_SET,           "ATTR_SET" }, \
> +     { XFS_TRANS_ATTR_RM,            "ATTR_RM" }, \
> +     { XFS_TRANS_ATTR_FLAG,          "ATTR_FLAG" }, \
> +     { XFS_TRANS_CLEAR_AGI_BUCKET,   "CLEAR_AGI_BUCKET" }, \
> +     { XFS_TRANS_QM_SBCHANGE,        "QM_SBCHANGE" }, \
> +     { XFS_TRANS_QM_QUOTAOFF,        "QM_QUOTAOFF" }, \
> +     { XFS_TRANS_QM_DQALLOC,         "QM_DQALLOC" }, \
> +     { XFS_TRANS_QM_SETQLIM,         "QM_SETQLIM" }, \
> +     { XFS_TRANS_QM_DQCLUSTER,       "QM_DQCLUSTER" }, \
> +     { XFS_TRANS_QM_QINOCREATE,      "QM_QINOCREATE" }, \
> +     { XFS_TRANS_QM_QUOTAOFF_END,    "QM_QOFF_END" }, \
> +     { XFS_TRANS_SB_UNIT,            "SB_UNIT" }, \
> +     { XFS_TRANS_FSYNC_TS,           "FSYNC_TS" }, \
> +     { XFS_TRANS_GROWFSRT_ALLOC,     "GROWFSRT_ALLOC" }, \
> +     { XFS_TRANS_GROWFSRT_ZERO,      "GROWFSRT_ZERO" }, \
> +     { XFS_TRANS_GROWFSRT_FREE,      "GROWFSRT_FREE" }, \
> +     { XFS_TRANS_SWAPEXT,            "SWAPEXT" }, \
> +     { XFS_TRANS_SB_COUNT,           "SB_COUNT" }, \
> +     { XFS_TRANS_CHECKPOINT,         "CHECKPOINT" }, \
> +     { XFS_TRANS_DUMMY1,             "DUMMY1" }, \
> +     { XFS_TRANS_DUMMY2,             "DUMMY2" }, \
> +     { XLOG_UNMOUNT_REC_TYPE,        "UNMOUNT" }
> +
> +/*
> + * This structure is used to track log items associated with
> + * a transaction.  It points to the log item and keeps some
> + * flags to track the state of the log item.  It also tracks
> + * the amount of space needed to log the item it describes
> + * once we get to commit processing (see xfs_trans_commit()).
> + */
> +struct xfs_log_item_desc {
> +     struct xfs_log_item     *lid_item;
> +     struct list_head        lid_trans;
> +     unsigned char           lid_flags;
> +};
> +
> +#define XFS_LID_DIRTY                0x1
> +
> +/* log size calculation functions */
> +int  xfs_log_calc_unit_res(struct xfs_mount *mp, int unit_bytes);
> +int  xfs_log_calc_minimum_size(struct xfs_mount *);
> +
> +
> +/*
> + * Values for t_flags.
> + */
> +#define      XFS_TRANS_DIRTY         0x01    /* something needs to be logged 
> */
> +#define      XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
> +#define      XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log 
> res */
> +#define      XFS_TRANS_SYNC          0x08    /* make commit synchronous */
> +#define XFS_TRANS_DQ_DIRTY   0x10    /* at least one dquot in trx dirty */
> +#define XFS_TRANS_RESERVE    0x20    /* OK to use reserved data blocks */
> +#define XFS_TRANS_FREEZE_PROT        0x40    /* Transaction has elevated 
> writer
> +                                        count in superblock */
> +/*
> + * Values for call flags parameter.
> + */
> +#define      XFS_TRANS_RELEASE_LOG_RES       0x4
> +#define      XFS_TRANS_ABORT                 0x8
> +
> +/*
> + * Field values for xfs_trans_mod_sb.
> + */
> +#define      XFS_TRANS_SB_ICOUNT             0x00000001
> +#define      XFS_TRANS_SB_IFREE              0x00000002
> +#define      XFS_TRANS_SB_FDBLOCKS           0x00000004
> +#define      XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
> +#define      XFS_TRANS_SB_FREXTENTS          0x00000010
> +#define      XFS_TRANS_SB_RES_FREXTENTS      0x00000020
> +#define      XFS_TRANS_SB_DBLOCKS            0x00000040
> +#define      XFS_TRANS_SB_AGCOUNT            0x00000080
> +#define      XFS_TRANS_SB_IMAXPCT            0x00000100
> +#define      XFS_TRANS_SB_REXTSIZE           0x00000200
> +#define      XFS_TRANS_SB_RBMBLOCKS          0x00000400
> +#define      XFS_TRANS_SB_RBLOCKS            0x00000800
> +#define      XFS_TRANS_SB_REXTENTS           0x00001000
> +#define      XFS_TRANS_SB_REXTSLOG           0x00002000
> +
> +/*
> + * Here we centralize the specification of XFS meta-data buffer reference 
> count
> + * values.  This determine how hard the buffer cache tries to hold onto the
> + * buffer.
> + */
> +#define      XFS_AGF_REF             4
> +#define      XFS_AGI_REF             4
> +#define      XFS_AGFL_REF            3
> +#define      XFS_INO_BTREE_REF       3
> +#define      XFS_ALLOC_BTREE_REF     2
> +#define      XFS_BMAP_BTREE_REF      2
> +#define      XFS_DIR_BTREE_REF       2
> +#define      XFS_INO_REF             2
> +#define      XFS_ATTR_BTREE_REF      1
> +#define      XFS_DQUOT_REF           1
> +
> +/*
> + * Flags for xfs_trans_ichgtime().
> + */
> +#define      XFS_ICHGTIME_MOD        0x1     /* data fork modification 
> timestamp */
> +#define      XFS_ICHGTIME_CHG        0x2     /* inode field change timestamp 
> */
> +#define      XFS_ICHGTIME_CREATE     0x4     /* inode create timestamp */
> +
> +
> +/*
> + * Symlink decoding/encoding functions
> + */
> +int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen);
> +int xfs_symlink_hdr_set(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
> +                     uint32_t size, struct xfs_buf *bp);
> +bool xfs_symlink_hdr_ok(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
> +                     uint32_t size, struct xfs_buf *bp);
> +void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp,
> +                              struct xfs_inode *ip, struct xfs_ifork *ifp);
> +
> +#endif /* __XFS_SHARED_H__ */
> 

<Prev in Thread] Current Thread [Next in Thread>