fuse_node.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2007-2009 Google Inc. and Amit Singh
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 *   notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above
14 *   copyright notice, this list of conditions and the following disclaimer
15 *   in the documentation and/or other materials provided with the
16 *   distribution.
17 * * Neither the name of Google Inc. nor the names of its
18 *   contributors may be used to endorse or promote products derived from
19 *   this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 * Copyright (C) 2005 Csaba Henk.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 *    notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 *    notice, this list of conditions and the following disclaimer in the
43 *    documentation and/or other materials provided with the distribution.
44 *
45 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 *
57 * $FreeBSD: stable/11/sys/fs/fuse/fuse_node.h 330897 2018-03-14 03:19:51Z eadler $
58 */
59
60#ifndef _FUSE_NODE_H_
61#define _FUSE_NODE_H_
62
63#include <sys/types.h>
64#include <sys/mutex.h>
65
66#include "fuse_file.h"
67
68#define FN_REVOKED           0x00000020
69#define FN_FLUSHINPROG       0x00000040
70#define FN_FLUSHWANT         0x00000080
71#define FN_SIZECHANGE        0x00000100
72#define FN_DIRECTIO          0x00000200
73
74struct fuse_vnode_data {
75    /** self **/
76    uint64_t   nid;
77
78    /** parent **/
79    /* XXXIP very likely to be stale, it's not updated in rename() */
80    uint64_t   parent_nid;
81
82    /** I/O **/
83    struct     fuse_filehandle fufh[FUFH_MAXTYPE];
84
85    /** flags **/
86    uint32_t   flag;
87
88    /** meta **/
89    struct vattr      cached_attrs;
90    off_t             filesize;
91    uint64_t          nlookup;
92    enum vtype        vtype;
93};
94
95#define VTOFUD(vp) \
96    ((struct fuse_vnode_data *)((vp)->v_data))
97#define VTOI(vp)    (VTOFUD(vp)->nid)
98#define VTOVA(vp)   (&(VTOFUD(vp)->cached_attrs))
99#define VTOILLU(vp) ((uint64_t)(VTOFUD(vp) ? VTOI(vp) : 0))
100
101#define FUSE_NULL_ID 0
102
103extern struct vop_vector fuse_vnops;
104
105static __inline void
106fuse_vnode_setparent(struct vnode *vp, struct vnode *dvp)
107{
108    if (dvp != NULL && vp->v_type == VDIR) {
109        MPASS(dvp->v_type == VDIR);
110        VTOFUD(vp)->parent_nid = VTOI(dvp);
111    }
112}
113
114void fuse_vnode_destroy(struct vnode *vp);
115
116int fuse_vnode_get(struct mount         *mp,
117                   uint64_t              nodeid,
118                   struct vnode         *dvp,
119                   struct vnode        **vpp,
120                   struct componentname *cnp,
121                   enum vtype            vtyp);
122
123void fuse_vnode_open(struct vnode *vp,
124                     int32_t fuse_open_flags,
125                     struct thread *td);
126
127void fuse_vnode_refreshsize(struct vnode *vp, struct ucred *cred);
128
129int fuse_vnode_savesize(struct vnode *vp, struct ucred *cred);
130
131int fuse_vnode_setsize(struct vnode *vp, struct ucred *cred, off_t newsize);
132
133#endif /* _FUSE_NODE_H_ */
134