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