1e93fc5eeb
on timing of the operations and not real lookup, bringing too many false positives. Remove the whole mechanism. If it needs to be implemented, next time it should really be done in the proper way. - Fix VOP_GETATTR() in order to cope with userland bugs that would change the type of file and not panic. Instead it gets the entry as if it is not existing. Reported and tested by: flo MFC after: 2 months X-MFC: 241519, 242536,242616
131 lines
4.7 KiB
C
131 lines
4.7 KiB
C
/*
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* Copyright (c) 2007-2009 Google Inc. and Amit Singh
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Copyright (C) 2005 Csaba Henk.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _FUSE_NODE_H_
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#define _FUSE_NODE_H_
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#include <sys/types.h>
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#include <sys/mutex.h>
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#include "fuse_file.h"
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#define FN_REVOKED 0x00000020
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#define FN_FLUSHINPROG 0x00000040
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#define FN_FLUSHWANT 0x00000080
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#define FN_SIZECHANGE 0x00000100
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struct fuse_vnode_data {
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/** self **/
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uint64_t nid;
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/** parent **/
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/* XXXIP very likely to be stale, it's not updated in rename() */
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uint64_t parent_nid;
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/** I/O **/
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struct fuse_filehandle fufh[FUFH_MAXTYPE];
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/** flags **/
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uint32_t flag;
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/** meta **/
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struct vattr cached_attrs;
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off_t filesize;
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uint64_t nlookup;
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enum vtype vtype;
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};
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#define VTOFUD(vp) \
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((struct fuse_vnode_data *)((vp)->v_data))
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#define VTOI(vp) (VTOFUD(vp)->nid)
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#define VTOVA(vp) (&(VTOFUD(vp)->cached_attrs))
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#define VTOILLU(vp) ((uint64_t)(VTOFUD(vp) ? VTOI(vp) : 0))
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#define FUSE_NULL_ID 0
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extern struct vop_vector fuse_vnops;
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static __inline void
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fuse_vnode_setparent(struct vnode *vp, struct vnode *dvp)
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{
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if (dvp != NULL && vp->v_type == VDIR) {
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MPASS(dvp->v_type == VDIR);
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VTOFUD(vp)->parent_nid = VTOI(dvp);
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}
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}
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void fuse_vnode_destroy(struct vnode *vp);
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int fuse_vnode_get(struct mount *mp,
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uint64_t nodeid,
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struct vnode *dvp,
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struct vnode **vpp,
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struct componentname *cnp,
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enum vtype vtyp);
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void fuse_vnode_open(struct vnode *vp,
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int32_t fuse_open_flags,
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struct thread *td);
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void fuse_vnode_refreshsize(struct vnode *vp, struct ucred *cred);
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int fuse_vnode_savesize(struct vnode *vp, struct ucred *cred);
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int fuse_vnode_setsize(struct vnode *vp, struct ucred *cred, off_t newsize);
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#endif /* _FUSE_NODE_H_ */
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