1 files changed, 126 insertions, 0 deletions

diff --git a/fs/xfs/xfs_dir2_block.h b/fs/xfs/xfs_dir2_block.h
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+++ b/fs/xfs/xfs_dir2_block.h
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+/*
+ * 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__ */