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 #define FID_CREATE 2 29 30 struct v9fs_fid { 31 struct list_head list; /* list of fids associated with a dentry */ 32 struct list_head active; /* XXX - debug */ 33 34 u32 fid; 35 unsigned char fidopen; /* set when fid is opened */ 36 unsigned char fidcreate; /* set when fid was just created */ 37 unsigned char fidclunked; /* set when fid has already been clunked */ 38 39 struct v9fs_qid qid; 40 u32 iounit; 41 42 /* readdir stuff */ 43 int rdir_fpos; 44 loff_t rdir_pos; 45 struct v9fs_fcall *rdir_fcall; 46 47 /* management stuff */ 48 pid_t pid; /* thread associated with this fid */ 49 uid_t uid; /* user associated with this fid */ 50 51 /* private data */ 52 struct file *filp; /* backpointer to File struct for open files */ 53 struct v9fs_session_info *v9ses; /* session info for this FID */ 54 }; 55 56 struct v9fs_fid *v9fs_fid_lookup(struct dentry *dentry); 57 struct v9fs_fid *v9fs_fid_get_created(struct dentry *); 58 void v9fs_fid_destroy(struct v9fs_fid *fid); 59 struct v9fs_fid *v9fs_fid_create(struct dentry *, 60 struct v9fs_session_info *v9ses, int fid, int create); 61