[linux.git] / fs / 9p / vfs_dentry.c

/*
 *  linux/fs/9p/vfs_dentry.c
 *
 * This file contians vfs dentry ops for the 9P2000 protocol.
 *
 *  Copyright (C) 2004 by Eric Van Hensbergen <[email protected]>
 *  Copyright (C) 2002 by Ron Minnich <[email protected]>
 *
 *  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/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/pagemap.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/smp_lock.h>
#include <linux/inet.h>
#include <linux/namei.h>
#include <linux/idr.h>

#include "debug.h"
#include "v9fs.h"
#include "9p.h"
#include "v9fs_vfs.h"
#include "fid.h"

/**
 * v9fs_dentry_delete - called when dentry refcount equals 0
 * @dentry:  dentry in question
 *
 * By returning 1 here we should remove cacheing of unused
 * dentry components.
 *
 */

int v9fs_dentry_delete(struct dentry *dentry)
{
	dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
	return 1;
}

/**
 * v9fs_dentry_release - called when dentry is going to be freed
 * @dentry:  dentry that is being release
 *
 */

void v9fs_dentry_release(struct dentry *dentry)
{
	int err;

	dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);

	if (dentry->d_fsdata != NULL) {
		struct list_head *fid_list = dentry->d_fsdata;
		struct v9fs_fid *temp = NULL;
		struct v9fs_fid *current_fid = NULL;

		list_for_each_entry_safe(current_fid, temp, fid_list, list) {
			err = v9fs_t_clunk(current_fid->v9ses, current_fid->fid);

			if (err < 0)
				dprintk(DEBUG_ERROR, "clunk failed: %d name %s\n",
					err, dentry->d_iname);

			v9fs_fid_destroy(current_fid);
		}

		kfree(dentry->d_fsdata);	/* free the list_head */
	}
}

struct dentry_operations v9fs_dentry_operations = {
	.d_delete = v9fs_dentry_delete,
	.d_release = v9fs_dentry_release,
};
Commit	Line	Data
e69e7fe5 EVH	1	/*
	2	* linux/fs/9p/vfs_dentry.c
	3	*
	4	* This file contians vfs dentry ops for the 9P2000 protocol.
	5	*
	6	* Copyright (C) 2004 by Eric Van Hensbergen <[email protected]>
	7	* Copyright (C) 2002 by Ron Minnich <[email protected]>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to:
	21	* Free Software Foundation
	22	* 51 Franklin Street, Fifth Floor
	23	* Boston, MA 02111-1301 USA
	24	*
	25	*/
	26
	27	#include <linux/module.h>
	28	#include <linux/errno.h>
	29	#include <linux/fs.h>
	30	#include <linux/file.h>
	31	#include <linux/pagemap.h>
	32	#include <linux/stat.h>
	33	#include <linux/string.h>
	34	#include <linux/smp_lock.h>
	35	#include <linux/inet.h>
	36	#include <linux/namei.h>
	37	#include <linux/idr.h>
	38
	39	#include "debug.h"
	40	#include "v9fs.h"
	41	#include "9p.h"
	42	#include "v9fs_vfs.h"
e69e7fe5 EVH	43	#include "fid.h"
	44
	45	/**
46f6dac2 EVH	46	* v9fs_dentry_delete - called when dentry refcount equals 0
46f6dac2 EVH	47	* @dentry: dentry in question
e69e7fe5	48	*
46f6dac2 EVH	49	* By returning 1 here we should remove cacheing of unused
46f6dac2 EVH	50	* dentry components.
e69e7fe5 EVH	51	*
	52	*/
	53
46f6dac2	54	int v9fs_dentry_delete(struct dentry *dentry)
e69e7fe5	55	{
46f6dac2 EVH	56	dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
46f6dac2 EVH	57	return 1;
e69e7fe5 EVH	58	}
	59
	60	/**
	61	* v9fs_dentry_release - called when dentry is going to be freed
	62	* @dentry: dentry that is being release
	63	*
	64	*/
	65
	66	void v9fs_dentry_release(struct dentry *dentry)
	67	{
3cf6429a LI	68	int err;
3cf6429a LI	69
e69e7fe5 EVH	70	dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
	71
	72	if (dentry->d_fsdata != NULL) {
	73	struct list_head *fid_list = dentry->d_fsdata;
	74	struct v9fs_fid *temp = NULL;
	75	struct v9fs_fid *current_fid = NULL;
e69e7fe5 EVH	76
e69e7fe5 EVH	77	list_for_each_entry_safe(current_fid, temp, fid_list, list) {
3cf6429a	78	err = v9fs_t_clunk(current_fid->v9ses, current_fid->fid);
e69e7fe5	79
3cf6429a	80	if (err < 0)
531b1094 LI	81	dprintk(DEBUG_ERROR, "clunk failed: %d name %s\n",
531b1094 LI	82	err, dentry->d_iname);
e69e7fe5	83
e69e7fe5 EVH	84	v9fs_fid_destroy(current_fid);
	85	}
	86
	87	kfree(dentry->d_fsdata); /* free the list_head */
	88	}
	89	}
	90
	91	struct dentry_operations v9fs_dentry_operations = {
46f6dac2	92	.d_delete = v9fs_dentry_delete,
e69e7fe5 EVH	93	.d_release = v9fs_dentry_release,
e69e7fe5 EVH	94	};