2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2007-2009 Google Inc. and Amit Singh
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11 * * Redistributions of source code must retain the above copyright
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33 * Copyright (C) 2005 Csaba Henk.
34 * All rights reserved.
36 * Copyright (c) 2019 The FreeBSD Foundation
38 * Portions of this software were developed by BFF Storage Systems, LLC under
39 * sponsorship from the FreeBSD Foundation.
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
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47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
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56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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68 #include <sys/fnv_hash.h>
69 #include <sys/types.h>
70 #include <sys/mutex.h>
73 #include "fuse_file.h"
75 #define FN_REVOKED 0x00000020
76 #define FN_FLUSHINPROG 0x00000040
77 #define FN_FLUSHWANT 0x00000080
79 * Indicates that the file's size is dirty; the kernel has changed it but not
80 * yet send the change to the daemon. When this bit is set, the
81 * cache_attrs.va_size field does not time out.
83 #define FN_SIZECHANGE 0x00000100
84 #define FN_DIRECTIO 0x00000200
85 /* Indicates that parent_nid is valid */
86 #define FN_PARENT_NID 0x00000400
89 * Indicates that the file's cached timestamps are dirty. They will be flushed
90 * during the next SETATTR or WRITE. Until then, the cached fields will not
93 #define FN_MTIMECHANGE 0x00000800
94 #define FN_CTIMECHANGE 0x00001000
96 struct fuse_vnode_data {
105 /* List of file handles for all of the vnode's open file descriptors */
106 LIST_HEAD(, fuse_filehandle) handles;
112 /* The monotonic time after which the attr cache is invalid */
113 struct bintime attr_cache_timeout;
115 * Monotonic time after which the entry is invalid. Used for lookups
116 * by nodeid instead of pathname.
118 struct bintime entry_cache_timeout;
119 struct vattr cached_attrs;
122 struct vn_clusterw clusterw;
126 * This overlays the fid structure (see mount.h). Mostly the same as the types
127 * used by UFS and ext2.
130 uint16_t len; /* Length of structure. */
131 uint16_t pad; /* Force 32-bit alignment. */
132 uint32_t gen; /* Generation number. */
133 uint64_t nid; /* FUSE node id. */
137 ((struct fuse_vnode_data *)((vp)->v_data))
138 #define VTOI(vp) (VTOFUD(vp)->nid)
140 fuse_vnode_attr_cache_valid(struct vnode *vp)
145 return (bintime_cmp(&(VTOFUD(vp)->attr_cache_timeout), &now, >));
148 static inline struct vattr*
149 VTOVA(struct vnode *vp)
151 if (fuse_vnode_attr_cache_valid(vp))
152 return &(VTOFUD(vp)->cached_attrs);
158 fuse_vnode_clear_attr_cache(struct vnode *vp)
160 bintime_clear(&VTOFUD(vp)->attr_cache_timeout);
163 static uint32_t inline
164 fuse_vnode_hash(uint64_t id)
166 return (fnv_32_buf(&id, sizeof(id), FNV1_32_INIT));
169 #define VTOILLU(vp) ((uint64_t)(VTOFUD(vp) ? VTOI(vp) : 0))
171 #define FUSE_NULL_ID 0
173 extern struct vop_vector fuse_fifoops;
174 extern struct vop_vector fuse_vnops;
176 int fuse_vnode_cmp(struct vnode *vp, void *nidp);
179 fuse_vnode_setparent(struct vnode *vp, struct vnode *dvp)
181 if (dvp != NULL && vp->v_type == VDIR) {
182 MPASS(dvp->v_type == VDIR);
183 VTOFUD(vp)->parent_nid = VTOI(dvp);
184 VTOFUD(vp)->flag |= FN_PARENT_NID;
186 VTOFUD(vp)->flag &= ~FN_PARENT_NID;
190 int fuse_vnode_size(struct vnode *vp, off_t *filesize, struct ucred *cred,
193 void fuse_vnode_destroy(struct vnode *vp);
195 int fuse_vnode_get(struct mount *mp, struct fuse_entry_out *feo,
196 uint64_t nodeid, struct vnode *dvp, struct vnode **vpp,
197 struct componentname *cnp, enum vtype vtyp);
199 void fuse_vnode_open(struct vnode *vp, int32_t fuse_open_flags,
202 int fuse_vnode_savesize(struct vnode *vp, struct ucred *cred, pid_t pid);
204 int fuse_vnode_setsize(struct vnode *vp, off_t newsize, bool from_server);
206 void fuse_vnode_undirty_cached_timestamps(struct vnode *vp);
208 void fuse_vnode_update(struct vnode *vp, int flags);
210 void fuse_node_init(void);
211 void fuse_node_destroy(void);
212 #endif /* _FUSE_NODE_H_ */