[mirror_ubuntu-bionic-kernel.git] / fs / 9p / fid.h

/*
 * 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 *);
Commit	Line	Data
3ed8491c EVH	1	/*
	2	* V9FS FID Management
	3	*
	4	* Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to:
	18	* Free Software Foundation
	19	* 51 Franklin Street, Fifth Floor
	20	* Boston, MA 02111-1301 USA
	21	*
	22	*/
	23
	24	#include <linux/list.h>
	25
	26	#define FID_OP 0
	27	#define FID_WALK 1
	28
	29	struct v9fs_fid {
	30	struct list_head list; /* list of fids associated with a dentry */
	31	struct list_head active; /* XXX - debug */
	32
	33	u32 fid;
	34	unsigned char fidopen; /* set when fid is opened */
	35	unsigned char fidcreate; /* set when fid was just created */
	36	unsigned char fidclunked; /* set when fid has already been clunked */
	37
	38	struct v9fs_qid qid;
	39	u32 iounit;
	40
	41	/* readdir stuff */
	42	int rdir_fpos;
	43	loff_t rdir_pos;
	44	struct v9fs_fcall *rdir_fcall;
	45
	46	/* management stuff */
	47	pid_t pid; /* thread associated with this fid */
	48	uid_t uid; /* user associated with this fid */
	49
	50	/* private data */
	51	struct file filp; / backpointer to File struct for open files */
	52	struct v9fs_session_info v9ses; / session info for this FID */
	53	};
	54
	55	struct v9fs_fid v9fs_fid_lookup(struct dentry dentry, int type);
	56	void v9fs_fid_destroy(struct v9fs_fid *fid);
	57	struct v9fs_fid v9fs_fid_create(struct dentry );