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Diffstat (limited to 'fs/xfs/xfs_dir2_block.h')
| -rw-r--r-- | fs/xfs/xfs_dir2_block.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/fs/xfs/xfs_dir2_block.h b/fs/xfs/xfs_dir2_block.h new file mode 100644 index 00000000000..5a578b84e24 --- /dev/null +++ b/fs/xfs/xfs_dir2_block.h @@ -0,0 +1,126 @@ +/* + * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 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. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ +#ifndef __XFS_DIR2_BLOCK_H__ +#define __XFS_DIR2_BLOCK_H__ + +/* + * xfs_dir2_block.h + * Directory version 2, single block format structures + */ + +struct uio; +struct xfs_dabuf; +struct xfs_da_args; +struct xfs_dir2_data_hdr; +struct xfs_dir2_leaf_entry; +struct xfs_inode; +struct xfs_mount; +struct xfs_trans; + +/* + * The single block format is as follows: + * xfs_dir2_data_hdr_t structure + * xfs_dir2_data_entry_t and xfs_dir2_data_unused_t structures + * xfs_dir2_leaf_entry_t structures + * xfs_dir2_block_tail_t structure + */ + +#define XFS_DIR2_BLOCK_MAGIC 0x58443242 /* XD2B: for one block dirs */ + +typedef struct xfs_dir2_block_tail { + __uint32_t count; /* count of leaf entries */ + __uint32_t stale; /* count of stale lf entries */ +} xfs_dir2_block_tail_t; + +/* + * Generic single-block structure, for xfs_db. + */ +typedef struct xfs_dir2_block { + xfs_dir2_data_hdr_t hdr; /* magic XFS_DIR2_BLOCK_MAGIC */ + xfs_dir2_data_union_t u[1]; + xfs_dir2_leaf_entry_t leaf[1]; + xfs_dir2_block_tail_t tail; +} xfs_dir2_block_t; + +/* + * Pointer to the leaf header embedded in a data block (1-block format) + */ +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BLOCK_TAIL_P) +xfs_dir2_block_tail_t * +xfs_dir2_block_tail_p(struct xfs_mount *mp, xfs_dir2_block_t *block); +#define XFS_DIR2_BLOCK_TAIL_P(mp,block) xfs_dir2_block_tail_p(mp,block) +#else +#define XFS_DIR2_BLOCK_TAIL_P(mp,block) \ + (((xfs_dir2_block_tail_t *)((char *)(block) + (mp)->m_dirblksize)) - 1) +#endif + +/* + * Pointer to the leaf entries embedded in a data block (1-block format) + */ +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR2_BLOCK_LEAF_P) +struct xfs_dir2_leaf_entry *xfs_dir2_block_leaf_p(xfs_dir2_block_tail_t *btp); +#define XFS_DIR2_BLOCK_LEAF_P(btp) \ + xfs_dir2_block_leaf_p(btp) +#else +#define XFS_DIR2_BLOCK_LEAF_P(btp) \ + (((struct xfs_dir2_leaf_entry *)(btp)) - INT_GET((btp)->count, ARCH_CONVERT)) +#endif + +/* + * Function declarations. + */ + +extern int + xfs_dir2_block_addname(struct xfs_da_args *args); + +extern int + xfs_dir2_block_getdents(struct xfs_trans *tp, struct xfs_inode *dp, + struct uio *uio, int *eofp, struct xfs_dirent *dbp, + xfs_dir2_put_t put); + +extern int + xfs_dir2_block_lookup(struct xfs_da_args *args); + +extern int + xfs_dir2_block_removename(struct xfs_da_args *args); + +extern int + xfs_dir2_block_replace(struct xfs_da_args *args); + +extern int + xfs_dir2_leaf_to_block(struct xfs_da_args *args, struct xfs_dabuf *lbp, + struct xfs_dabuf *dbp); + +extern int + xfs_dir2_sf_to_block(struct xfs_da_args *args); + +#endif /* __XFS_DIR2_BLOCK_H__ */ |