Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 154 insertions, 0 deletions

diff --git a/fs/xfs/xfs_dir.h b/fs/xfs/xfs_dir.h
new file mode 100644
index 000000000000..4dbc9f54cca5
--- /dev/null
+++ b/fs/xfs/xfs_dir.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2000 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_DIR_H__
+#define __XFS_DIR_H__
+
+/*
+ * Large directories are structured around Btrees where all the data
+ * elements are in the leaf nodes.  Filenames are hashed into an int,
+ * then that int is used as the index into the Btree.  Since the hashval
+ * of a filename may not be unique, we may have duplicate keys.  The
+ * internal links in the Btree are logical block offsets into the file.
+ *
+ * Small directories use a different format and are packed as tightly
+ * as possible so as to fit into the literal area of the inode.
+ */
+
+/*========================================================================
+ * Function prototypes for the kernel.
+ *========================================================================*/
+
+struct uio;
+struct xfs_bmap_free;
+struct xfs_da_args;
+struct xfs_dinode;
+struct xfs_inode;
+struct xfs_mount;
+struct xfs_trans;
+
+/*
+ * Directory function types.
+ * Put in structures (xfs_dirops_t) for v1 and v2 directories.
+ */
+typedef void    (*xfs_dir_mount_t)(struct xfs_mount *mp);
+typedef int     (*xfs_dir_isempty_t)(struct xfs_inode *dp);
+typedef int     (*xfs_dir_init_t)(struct xfs_trans *tp,
+                                  struct xfs_inode *dp,
+                                  struct xfs_inode *pdp);
+typedef int     (*xfs_dir_createname_t)(struct xfs_trans *tp,
+                                        struct xfs_inode *dp,
+                                        char *name,
+                                        int namelen,
+                                        xfs_ino_t inum,
+                                        xfs_fsblock_t *first,
+                                        struct xfs_bmap_free *flist,
+                                        xfs_extlen_t total);
+typedef int     (*xfs_dir_lookup_t)(struct xfs_trans *tp,
+                                    struct xfs_inode *dp,
+                                    char *name,
+                                    int namelen,
+                                    xfs_ino_t *inum);
+typedef int     (*xfs_dir_removename_t)(struct xfs_trans *tp,
+                                        struct xfs_inode *dp,
+                                        char *name,
+                                        int namelen,
+                                        xfs_ino_t ino,
+                                        xfs_fsblock_t *first,
+                                        struct xfs_bmap_free *flist,
+                                        xfs_extlen_t total);
+typedef int     (*xfs_dir_getdents_t)(struct xfs_trans *tp,
+                                      struct xfs_inode *dp,
+                                      struct uio *uio,
+                                      int *eofp);
+typedef int     (*xfs_dir_replace_t)(struct xfs_trans *tp,
+                                     struct xfs_inode *dp,
+                                     char *name,
+                                     int namelen,
+                                     xfs_ino_t inum,
+                                     xfs_fsblock_t *first,
+                                     struct xfs_bmap_free *flist,
+                                     xfs_extlen_t total);
+typedef int     (*xfs_dir_canenter_t)(struct xfs_trans *tp,
+                                      struct xfs_inode *dp,
+                                      char *name,
+                                      int namelen);
+typedef int     (*xfs_dir_shortform_validate_ondisk_t)(struct xfs_mount *mp,
+                                                       struct xfs_dinode *dip);
+typedef int     (*xfs_dir_shortform_to_single_t)(struct xfs_da_args *args);
+
+typedef struct xfs_dirops {
+        xfs_dir_mount_t                         xd_mount;
+        xfs_dir_isempty_t                       xd_isempty;
+        xfs_dir_init_t                          xd_init;
+        xfs_dir_createname_t                    xd_createname;
+        xfs_dir_lookup_t                        xd_lookup;
+        xfs_dir_removename_t                    xd_removename;
+        xfs_dir_getdents_t                      xd_getdents;
+        xfs_dir_replace_t                       xd_replace;
+        xfs_dir_canenter_t                      xd_canenter;
+        xfs_dir_shortform_validate_ondisk_t     xd_shortform_validate_ondisk;
+        xfs_dir_shortform_to_single_t           xd_shortform_to_single;
+} xfs_dirops_t;
+
+/*
+ * Overall external interface routines.
+ */
+void    xfs_dir_startup(void);  /* called exactly once */
+
+#define XFS_DIR_MOUNT(mp)       \
+        ((mp)->m_dirops.xd_mount(mp))
+#define XFS_DIR_ISEMPTY(mp,dp)  \
+        ((mp)->m_dirops.xd_isempty(dp))
+#define XFS_DIR_INIT(mp,tp,dp,pdp)      \
+        ((mp)->m_dirops.xd_init(tp,dp,pdp))
+#define XFS_DIR_CREATENAME(mp,tp,dp,name,namelen,inum,first,flist,total) \
+        ((mp)->m_dirops.xd_createname(tp,dp,name,namelen,inum,first,flist,\
+                                      total))
+#define XFS_DIR_LOOKUP(mp,tp,dp,name,namelen,inum)      \
+        ((mp)->m_dirops.xd_lookup(tp,dp,name,namelen,inum))
+#define XFS_DIR_REMOVENAME(mp,tp,dp,name,namelen,ino,first,flist,total) \
+        ((mp)->m_dirops.xd_removename(tp,dp,name,namelen,ino,first,flist,total))
+#define XFS_DIR_GETDENTS(mp,tp,dp,uio,eofp)     \
+        ((mp)->m_dirops.xd_getdents(tp,dp,uio,eofp))
+#define XFS_DIR_REPLACE(mp,tp,dp,name,namelen,inum,first,flist,total)   \
+        ((mp)->m_dirops.xd_replace(tp,dp,name,namelen,inum,first,flist,total))
+#define XFS_DIR_CANENTER(mp,tp,dp,name,namelen) \
+        ((mp)->m_dirops.xd_canenter(tp,dp,name,namelen))
+#define XFS_DIR_SHORTFORM_VALIDATE_ONDISK(mp,dip)       \
+        ((mp)->m_dirops.xd_shortform_validate_ondisk(mp,dip))
+#define XFS_DIR_SHORTFORM_TO_SINGLE(mp,args)    \
+        ((mp)->m_dirops.xd_shortform_to_single(args))
+
+#define XFS_DIR_IS_V1(mp)       ((mp)->m_dirversion == 1)
+extern xfs_dirops_t xfsv1_dirops;
+
+#endif  /* __XFS_DIR_H__ */