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author | Dave Chinner <dchinner@redhat.com> | 2014-06-25 06:57:36 +0200 |
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committer | Dave Chinner <david@fromorbit.com> | 2014-06-25 06:57:36 +0200 |
commit | 84be0ffc9043f7c56044294eb775a2200452c76d (patch) | |
tree | f92ae3d2a8ddfc0c98c76c434432f42b7c14ac0d /fs/xfs/xfs_da_btree.h | |
parent | xfs: create libxfs infrastructure (diff) | |
download | linux-84be0ffc9043f7c56044294eb775a2200452c76d.tar.xz linux-84be0ffc9043f7c56044294eb775a2200452c76d.zip |
libxfs: move header files
Move all the header files that are shared with userspace into
libxfs. This is done as one big chunk simpy to get it done quickly.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_da_btree.h')
-rw-r--r-- | fs/xfs/xfs_da_btree.h | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/fs/xfs/xfs_da_btree.h b/fs/xfs/xfs_da_btree.h deleted file mode 100644 index 6e153e399a77..000000000000 --- a/fs/xfs/xfs_da_btree.h +++ /dev/null @@ -1,221 +0,0 @@ -/* - * Copyright (c) 2000,2002,2005 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_DA_BTREE_H__ -#define __XFS_DA_BTREE_H__ - -struct xfs_bmap_free; -struct xfs_inode; -struct xfs_trans; -struct zone; -struct xfs_dir_ops; - -/* - * Directory/attribute geometry information. There will be one of these for each - * data fork type, and it will be passed around via the xfs_da_args. Global - * structures will be attached to the xfs_mount. - */ -struct xfs_da_geometry { - int blksize; /* da block size in bytes */ - int fsbcount; /* da block size in filesystem blocks */ - uint8_t fsblog; /* log2 of _filesystem_ block size */ - uint8_t blklog; /* log2 of da block size */ - uint node_ents; /* # of entries in a danode */ - int magicpct; /* 37% of block size in bytes */ - xfs_dablk_t datablk; /* blockno of dir data v2 */ - xfs_dablk_t leafblk; /* blockno of leaf data v2 */ - xfs_dablk_t freeblk; /* blockno of free data v2 */ -}; - -/*======================================================================== - * Btree searching and modification structure definitions. - *========================================================================*/ - -/* - * Search comparison results - */ -enum xfs_dacmp { - XFS_CMP_DIFFERENT, /* names are completely different */ - XFS_CMP_EXACT, /* names are exactly the same */ - XFS_CMP_CASE /* names are same but differ in case */ -}; - -/* - * Structure to ease passing around component names. - */ -typedef struct xfs_da_args { - struct xfs_da_geometry *geo; /* da block geometry */ - const __uint8_t *name; /* string (maybe not NULL terminated) */ - int namelen; /* length of string (maybe no NULL) */ - __uint8_t filetype; /* filetype of inode for directories */ - __uint8_t *value; /* set of bytes (maybe contain NULLs) */ - int valuelen; /* length of value */ - int flags; /* argument flags (eg: ATTR_NOCREATE) */ - xfs_dahash_t hashval; /* hash value of name */ - xfs_ino_t inumber; /* input/output inode number */ - struct xfs_inode *dp; /* directory inode to manipulate */ - xfs_fsblock_t *firstblock; /* ptr to firstblock for bmap calls */ - struct xfs_bmap_free *flist; /* ptr to freelist for bmap_finish */ - struct xfs_trans *trans; /* current trans (changes over time) */ - xfs_extlen_t total; /* total blocks needed, for 1st bmap */ - int whichfork; /* data or attribute fork */ - xfs_dablk_t blkno; /* blkno of attr leaf of interest */ - int index; /* index of attr of interest in blk */ - xfs_dablk_t rmtblkno; /* remote attr value starting blkno */ - int rmtblkcnt; /* remote attr value block count */ - int rmtvaluelen; /* remote attr value length in bytes */ - xfs_dablk_t blkno2; /* blkno of 2nd attr leaf of interest */ - int index2; /* index of 2nd attr in blk */ - xfs_dablk_t rmtblkno2; /* remote attr value starting blkno */ - int rmtblkcnt2; /* remote attr value block count */ - int rmtvaluelen2; /* remote attr value length in bytes */ - int op_flags; /* operation flags */ - enum xfs_dacmp cmpresult; /* name compare result for lookups */ -} xfs_da_args_t; - -/* - * Operation flags: - */ -#define XFS_DA_OP_JUSTCHECK 0x0001 /* check for ok with no space */ -#define XFS_DA_OP_RENAME 0x0002 /* this is an atomic rename op */ -#define XFS_DA_OP_ADDNAME 0x0004 /* this is an add operation */ -#define XFS_DA_OP_OKNOENT 0x0008 /* lookup/add op, ENOENT ok, else die */ -#define XFS_DA_OP_CILOOKUP 0x0010 /* lookup to return CI name if found */ - -#define XFS_DA_OP_FLAGS \ - { XFS_DA_OP_JUSTCHECK, "JUSTCHECK" }, \ - { XFS_DA_OP_RENAME, "RENAME" }, \ - { XFS_DA_OP_ADDNAME, "ADDNAME" }, \ - { XFS_DA_OP_OKNOENT, "OKNOENT" }, \ - { XFS_DA_OP_CILOOKUP, "CILOOKUP" } - -/* - * Storage for holding state during Btree searches and split/join ops. - * - * Only need space for 5 intermediate nodes. With a minimum of 62-way - * fanout to the Btree, we can support over 900 million directory blocks, - * which is slightly more than enough. - */ -typedef struct xfs_da_state_blk { - struct xfs_buf *bp; /* buffer containing block */ - xfs_dablk_t blkno; /* filesystem blkno of buffer */ - xfs_daddr_t disk_blkno; /* on-disk blkno (in BBs) of buffer */ - int index; /* relevant index into block */ - xfs_dahash_t hashval; /* last hash value in block */ - int magic; /* blk's magic number, ie: blk type */ -} xfs_da_state_blk_t; - -typedef struct xfs_da_state_path { - int active; /* number of active levels */ - xfs_da_state_blk_t blk[XFS_DA_NODE_MAXDEPTH]; -} xfs_da_state_path_t; - -typedef struct xfs_da_state { - xfs_da_args_t *args; /* filename arguments */ - struct xfs_mount *mp; /* filesystem mount point */ - xfs_da_state_path_t path; /* search/split paths */ - xfs_da_state_path_t altpath; /* alternate path for join */ - unsigned char inleaf; /* insert into 1->lf, 0->splf */ - unsigned char extravalid; /* T/F: extrablk is in use */ - unsigned char extraafter; /* T/F: extrablk is after new */ - xfs_da_state_blk_t extrablk; /* for double-splits on leaves */ - /* for dirv2 extrablk is data */ -} xfs_da_state_t; - -/* - * Utility macros to aid in logging changed structure fields. - */ -#define XFS_DA_LOGOFF(BASE, ADDR) ((char *)(ADDR) - (char *)(BASE)) -#define XFS_DA_LOGRANGE(BASE, ADDR, SIZE) \ - (uint)(XFS_DA_LOGOFF(BASE, ADDR)), \ - (uint)(XFS_DA_LOGOFF(BASE, ADDR)+(SIZE)-1) - -/* - * Name ops for directory and/or attr name operations - */ -struct xfs_nameops { - xfs_dahash_t (*hashname)(struct xfs_name *); - enum xfs_dacmp (*compname)(struct xfs_da_args *, - const unsigned char *, int); -}; - - -/*======================================================================== - * Function prototypes. - *========================================================================*/ - -/* - * Routines used for growing the Btree. - */ -int xfs_da3_node_create(struct xfs_da_args *args, xfs_dablk_t blkno, - int level, struct xfs_buf **bpp, int whichfork); -int xfs_da3_split(xfs_da_state_t *state); - -/* - * Routines used for shrinking the Btree. - */ -int xfs_da3_join(xfs_da_state_t *state); -void xfs_da3_fixhashpath(struct xfs_da_state *state, - struct xfs_da_state_path *path_to_to_fix); - -/* - * Routines used for finding things in the Btree. - */ -int xfs_da3_node_lookup_int(xfs_da_state_t *state, int *result); -int xfs_da3_path_shift(xfs_da_state_t *state, xfs_da_state_path_t *path, - int forward, int release, int *result); -/* - * Utility routines. - */ -int xfs_da3_blk_link(xfs_da_state_t *state, xfs_da_state_blk_t *old_blk, - xfs_da_state_blk_t *new_blk); -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); - -/* - * Utility routines. - */ -int xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno); -int xfs_da_grow_inode_int(struct xfs_da_args *args, xfs_fileoff_t *bno, - int count); -int xfs_da_get_buf(struct xfs_trans *trans, struct xfs_inode *dp, - xfs_dablk_t bno, xfs_daddr_t mappedbno, - struct xfs_buf **bp, int whichfork); -int xfs_da_read_buf(struct xfs_trans *trans, struct xfs_inode *dp, - xfs_dablk_t bno, xfs_daddr_t mappedbno, - struct xfs_buf **bpp, int whichfork, - const struct xfs_buf_ops *ops); -xfs_daddr_t xfs_da_reada_buf(struct xfs_inode *dp, xfs_dablk_t bno, - xfs_daddr_t mapped_bno, int whichfork, - const struct xfs_buf_ops *ops); -int xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno, - struct xfs_buf *dead_buf); - -uint xfs_da_hashname(const __uint8_t *name_string, int name_length); -enum xfs_dacmp xfs_da_compname(struct xfs_da_args *args, - const unsigned char *name, int len); - - -xfs_da_state_t *xfs_da_state_alloc(void); -void xfs_da_state_free(xfs_da_state_t *state); - -extern struct kmem_zone *xfs_da_state_zone; -extern const struct xfs_nameops xfs_default_nameops; - -#endif /* __XFS_DA_BTREE_H__ */ |