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authorDave Chinner <dchinner@redhat.com>2014-06-25 06:57:36 +0200
committerDave Chinner <david@fromorbit.com>2014-06-25 06:57:36 +0200
commit84be0ffc9043f7c56044294eb775a2200452c76d (patch)
treef92ae3d2a8ddfc0c98c76c434432f42b7c14ac0d /fs/xfs/xfs_da_btree.h
parentxfs: create libxfs infrastructure (diff)
downloadlinux-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.h221
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__ */