| Thomas Gleixner | 1f32761 | 2019-05-28 09:57:16 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Eric Van Hensbergen | 3ed8491 | 2005-09-09 13:04:24 -0700 | [diff] [blame] | 2 | /* |
| 3 | * V9FS FID Management |
| 4 | * |
| 5 | * Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com> |
| Eric Van Hensbergen | 3ed8491 | 2005-09-09 13:04:24 -0700 | [diff] [blame] | 6 | */ |
| Aneesh Kumar K.V | e0459f5 | 2011-02-28 17:04:09 +0530 | [diff] [blame] | 7 | #ifndef FS_9P_FID_H |
| 8 | #define FS_9P_FID_H |
| Eric Van Hensbergen | 3ed8491 | 2005-09-09 13:04:24 -0700 | [diff] [blame] | 9 | #include <linux/list.h> |
| 10 | |
| Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 11 | struct p9_fid *v9fs_fid_lookup(struct dentry *dentry); |
| Al Viro | 77d5a6b | 2016-05-29 15:29:26 -0400 | [diff] [blame] | 12 | static inline struct p9_fid *v9fs_parent_fid(struct dentry *dentry) |
| 13 | { |
| 14 | return v9fs_fid_lookup(dentry->d_parent); |
| 15 | } |
| Al Viro | 2ea03e1d | 2013-02-28 01:18:14 -0500 | [diff] [blame] | 16 | void v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid); |
| Aneesh Kumar K.V | 3cf387d | 2011-02-28 17:03:57 +0530 | [diff] [blame] | 17 | struct p9_fid *v9fs_writeback_fid(struct dentry *dentry); |
| Greg Kurz | 987a648 | 2020-09-23 22:11:44 +0800 | [diff] [blame] | 18 | void v9fs_open_fid_add(struct inode *inode, struct p9_fid *fid); |
| Al Viro | 797fc16 | 2016-08-03 11:02:48 -0400 | [diff] [blame] | 19 | static inline struct p9_fid *clone_fid(struct p9_fid *fid) |
| 20 | { |
| 21 | return IS_ERR(fid) ? fid : p9_client_walk(fid, 0, NULL, 1); |
| 22 | } |
| Al Viro | 7d50a29 | 2016-08-03 11:12:12 -0400 | [diff] [blame] | 23 | static inline struct p9_fid *v9fs_fid_clone(struct dentry *dentry) |
| 24 | { |
| Jianyong Wu | 6636b6d | 2020-09-23 22:11:46 +0800 | [diff] [blame] | 25 | struct p9_fid *fid, *nfid; |
| 26 | |
| 27 | fid = v9fs_fid_lookup(dentry); |
| 28 | if (!fid || IS_ERR(fid)) |
| 29 | return fid; |
| 30 | |
| Dominique Martinet | ff5e72e | 2020-11-03 09:35:57 +0100 | [diff] [blame] | 31 | nfid = clone_fid(fid); |
| Jianyong Wu | 6636b6d | 2020-09-23 22:11:46 +0800 | [diff] [blame] | 32 | p9_client_clunk(fid); |
| 33 | return nfid; |
| Al Viro | 7d50a29 | 2016-08-03 11:12:12 -0400 | [diff] [blame] | 34 | } |
| Aneesh Kumar K.V | e0459f5 | 2011-02-28 17:04:09 +0530 | [diff] [blame] | 35 | #endif |