2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2007-2009 Google Inc. and Amit Singh
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
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
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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,
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27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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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.
33 * Copyright (C) 2005 Csaba Henk.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
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.
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
60 #ifndef _FUSE_INTERNAL_H_
61 #define _FUSE_INTERNAL_H_
63 #include <sys/types.h>
66 #include <sys/vnode.h>
69 #include "fuse_node.h"
72 vfs_isrdonly(struct mount *mp)
74 return ((mp->mnt_flag & MNT_RDONLY) != 0);
77 static inline struct mount *
78 vnode_mount(struct vnode *vp)
84 vnode_mountedhere(struct vnode *vp)
86 return (vp->v_mountedhere != NULL);
89 static inline enum vtype
90 vnode_vtype(struct vnode *vp)
96 vnode_isvroot(struct vnode *vp)
98 return ((vp->v_vflag & VV_ROOT) != 0);
102 vnode_isreg(struct vnode *vp)
104 return (vp->v_type == VREG);
108 vnode_isdir(struct vnode *vp)
110 return (vp->v_type == VDIR);
114 vnode_islnk(struct vnode *vp)
116 return (vp->v_type == VLNK);
119 static inline ssize_t
120 uio_resid(struct uio *uio)
122 return (uio->uio_resid);
126 uio_offset(struct uio *uio)
128 return (uio->uio_offset);
132 uio_setoffset(struct uio *uio, off_t offset)
134 uio->uio_offset = offset;
140 fuse_isdeadfs(struct vnode *vp)
142 struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp));
144 return (data->dataflags & FSESS_DEAD);
147 static inline uint64_t
148 fuse_iosize(struct vnode *vp)
150 return (vp->v_mount->mnt_stat.f_iosize);
154 * Make a cacheable timeout in bintime format value based on a fuse_attr_out
158 fuse_validity_2_bintime(uint64_t attr_valid, uint32_t attr_valid_nsec,
159 struct bintime *timeout)
161 struct timespec now, duration, timeout_ts;
164 /* "+ 2" is the bound of attr_valid_nsec + now.tv_nsec */
165 /* Why oh why isn't there a TIME_MAX defined? */
166 if (attr_valid >= INT_MAX || attr_valid + now.tv_sec + 2 >= INT_MAX) {
167 timeout->sec = INT_MAX;
169 duration.tv_sec = attr_valid;
170 duration.tv_nsec = attr_valid_nsec;
171 timespecadd(&duration, &now, &timeout_ts);
172 timespec2bintime(&timeout_ts, timeout);
177 * Make a cacheable timeout value in timespec format based on the fuse_entry_out
181 fuse_validity_2_timespec(const struct fuse_entry_out *feo,
182 struct timespec *timeout)
184 struct timespec duration, now;
187 /* "+ 2" is the bound of entry_valid_nsec + now.tv_nsec */
188 if (feo->entry_valid >= INT_MAX ||
189 feo->entry_valid + now.tv_sec + 2 >= INT_MAX) {
190 timeout->tv_sec = INT_MAX;
192 duration.tv_sec = feo->entry_valid;
193 duration.tv_nsec = feo->entry_valid_nsec;
194 timespecadd(&duration, &now, timeout);
201 #define FVP_ACCESS_NOOP 0x01
203 #define FACCESS_VA_VALID 0x01
205 * Caller must be the directory's owner, or the superuser, or the sticky bit
208 #define FACCESS_STICKY 0x04
209 /* Caller requires access to change file's owner */
210 #define FACCESS_CHOWN 0x08
211 #define FACCESS_SETGID 0x12
213 #define FACCESS_XQUERIES (FACCESS_STICKY | FACCESS_CHOWN | FACCESS_SETGID)
215 struct fuse_access_param {
222 fuse_match_cred(struct ucred *basecred, struct ucred *usercred)
224 if (basecred->cr_uid == usercred->cr_uid &&
225 basecred->cr_uid == usercred->cr_ruid &&
226 basecred->cr_uid == usercred->cr_svuid &&
227 basecred->cr_groups[0] == usercred->cr_groups[0] &&
228 basecred->cr_groups[0] == usercred->cr_rgid &&
229 basecred->cr_groups[0] == usercred->cr_svgid)
235 int fuse_internal_access(struct vnode *vp, accmode_t mode,
236 struct fuse_access_param *facp, struct thread *td, struct ucred *cred);
239 void fuse_internal_cache_attrs(struct vnode *vp, struct fuse_attr *attr,
240 uint64_t attr_valid, uint32_t attr_valid_nsec, struct vattr *vap);
244 int fuse_internal_fsync(struct vnode *vp, struct thread *td, int waitfor,
246 int fuse_internal_fsync_callback(struct fuse_ticket *tick, struct uio *uio);
249 int fuse_internal_getattr(struct vnode *vp, struct vattr *vap,
250 struct ucred *cred, struct thread *td);
254 struct pseudo_dirent {
258 int fuse_internal_readdir(struct vnode *vp, struct uio *uio,
259 struct fuse_filehandle *fufh, struct fuse_iov *cookediov);
260 int fuse_internal_readdir_processdata(struct uio *uio, size_t reqsize,
261 void *buf, size_t bufsize, void *param);
265 int fuse_internal_remove(struct vnode *dvp, struct vnode *vp,
266 struct componentname *cnp, enum fuse_opcode op);
270 int fuse_internal_rename(struct vnode *fdvp, struct componentname *fcnp,
271 struct vnode *tdvp, struct componentname *tcnp);
275 void fuse_internal_vnode_disappear(struct vnode *vp);
279 /* entity creation */
282 fuse_internal_checkentry(struct fuse_entry_out *feo, enum vtype vtyp)
284 if (vtyp != IFTOVT(feo->attr.mode)) {
288 if (feo->nodeid == FUSE_NULL_ID) {
292 if (feo->nodeid == FUSE_ROOT_ID) {
299 int fuse_internal_newentry(struct vnode *dvp, struct vnode **vpp,
300 struct componentname *cnp, enum fuse_opcode op, void *buf, size_t bufsize,
303 void fuse_internal_newentry_makerequest(struct mount *mp, uint64_t dnid,
304 struct componentname *cnp, enum fuse_opcode op, void *buf, size_t bufsize,
305 struct fuse_dispatcher *fdip);
307 int fuse_internal_newentry_core(struct vnode *dvp, struct vnode **vpp,
308 struct componentname *cnp, enum vtype vtyp, struct fuse_dispatcher *fdip);
310 /* entity destruction */
312 int fuse_internal_forget_callback(struct fuse_ticket *tick, struct uio *uio);
313 void fuse_internal_forget_send(struct mount *mp, struct thread *td,
314 struct ucred *cred, uint64_t nodeid, uint64_t nlookup);
316 /* fuse start/stop */
318 int fuse_internal_init_callback(struct fuse_ticket *tick, struct uio *uio);
319 void fuse_internal_send_init(struct fuse_data *data, struct thread *td);
321 #endif /* _FUSE_INTERNAL_H_ */