[PATCH] v9fs: debug and support routines

This part of the patch contains debug and other misc routines.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/9p/fid.h

@@ -0,0 +1,57 @@
+/*
+ * V9FS FID Management
+ *
+ *  Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
+ *
+ *  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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will 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 to:
+ *  Free Software Foundation
+ *  51 Franklin Street, Fifth Floor
+ *  Boston, MA  02111-1301  USA
+ *
+ */
+
+#include <linux/list.h>
+
+#define FID_OP   0
+#define FID_WALK 1
+
+struct v9fs_fid {
+	struct list_head list;	 /* list of fids associated with a dentry */
+	struct list_head active; /* XXX - debug */
+
+	u32 fid;
+	unsigned char fidopen;	  /* set when fid is opened */
+	unsigned char fidcreate;  /* set when fid was just created */
+	unsigned char fidclunked; /* set when fid has already been clunked */
+
+	struct v9fs_qid qid;
+	u32 iounit;
+
+	/* readdir stuff */
+	int rdir_fpos;
+	loff_t rdir_pos;
+	struct v9fs_fcall *rdir_fcall;
+
+	/* management stuff */
+	pid_t pid;		/* thread associated with this fid */
+	uid_t uid;		/* user associated with this fid */
+
+	/* private data */
+	struct file *filp;	/* backpointer to File struct for open files */
+	struct v9fs_session_info *v9ses;	/* session info for this FID */
+};
+
+struct v9fs_fid *v9fs_fid_lookup(struct dentry *dentry, int type);
+void v9fs_fid_destroy(struct v9fs_fid *fid);
+struct v9fs_fid *v9fs_fid_create(struct dentry *);