2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2007-2009 Google Inc. and Amit Singh
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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.
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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
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24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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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 * 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.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
50 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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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59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 #ifndef _FUSE_INTERNAL_H_
66 #define _FUSE_INTERNAL_H_
68 #include <sys/types.h>
69 #include <sys/counter.h>
72 #include <sys/vnode.h>
75 #include "fuse_node.h"
77 extern counter_u64_t fuse_lookup_cache_hits;
78 extern counter_u64_t fuse_lookup_cache_misses;
81 vfs_isrdonly(struct mount *mp)
83 return ((mp->mnt_flag & MNT_RDONLY) != 0);
86 static inline struct mount *
87 vnode_mount(struct vnode *vp)
92 static inline enum vtype
93 vnode_vtype(struct vnode *vp)
99 vnode_isvroot(struct vnode *vp)
101 return ((vp->v_vflag & VV_ROOT) != 0);
105 vnode_isreg(struct vnode *vp)
107 return (vp->v_type == VREG);
111 vnode_isdir(struct vnode *vp)
113 return (vp->v_type == VDIR);
117 vnode_islnk(struct vnode *vp)
119 return (vp->v_type == VLNK);
122 static inline ssize_t
123 uio_resid(struct uio *uio)
125 return (uio->uio_resid);
129 uio_offset(struct uio *uio)
131 return (uio->uio_offset);
135 uio_setoffset(struct uio *uio, off_t offset)
137 uio->uio_offset = offset;
143 fuse_isdeadfs(struct vnode *vp)
145 struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp));
147 return (data->dataflags & FSESS_DEAD);
150 static inline uint64_t
151 fuse_iosize(struct vnode *vp)
153 return (vp->v_mount->mnt_stat.f_iosize);
157 * Make a cacheable timeout in bintime format value based on a fuse_attr_out
161 fuse_validity_2_bintime(uint64_t attr_valid, uint32_t attr_valid_nsec,
162 struct bintime *timeout)
164 struct timespec now, duration, timeout_ts;
167 /* "+ 2" is the bound of attr_valid_nsec + now.tv_nsec */
168 /* Why oh why isn't there a TIME_MAX defined? */
169 if (attr_valid >= INT_MAX || attr_valid + now.tv_sec + 2 >= INT_MAX) {
170 timeout->sec = INT_MAX;
172 duration.tv_sec = attr_valid;
173 duration.tv_nsec = attr_valid_nsec;
174 timespecadd(&duration, &now, &timeout_ts);
175 timespec2bintime(&timeout_ts, timeout);
180 * Make a cacheable timeout value in timespec format based on the fuse_entry_out
184 fuse_validity_2_timespec(const struct fuse_entry_out *feo,
185 struct timespec *timeout)
187 struct timespec duration, now;
190 /* "+ 2" is the bound of entry_valid_nsec + now.tv_nsec */
191 if (feo->entry_valid >= INT_MAX ||
192 feo->entry_valid + now.tv_sec + 2 >= INT_MAX) {
193 timeout->tv_sec = INT_MAX;
195 duration.tv_sec = feo->entry_valid;
196 duration.tv_nsec = feo->entry_valid_nsec;
197 timespecadd(&duration, &now, timeout);
204 fuse_internal_get_cached_vnode(struct mount*, ino_t, int, struct vnode**);
208 fuse_match_cred(struct ucred *basecred, struct ucred *usercred)
210 if (basecred->cr_uid == usercred->cr_uid &&
211 basecred->cr_uid == usercred->cr_ruid &&
212 basecred->cr_uid == usercred->cr_svuid &&
213 basecred->cr_groups[0] == usercred->cr_groups[0] &&
214 basecred->cr_groups[0] == usercred->cr_rgid &&
215 basecred->cr_groups[0] == usercred->cr_svgid)
221 int fuse_internal_access(struct vnode *vp, accmode_t mode,
222 struct thread *td, struct ucred *cred);
225 void fuse_internal_cache_attrs(struct vnode *vp, struct fuse_attr *attr,
226 uint64_t attr_valid, uint32_t attr_valid_nsec, struct vattr *vap);
230 int fuse_internal_fsync(struct vnode *vp, struct thread *td, int waitfor,
232 int fuse_internal_fsync_callback(struct fuse_ticket *tick, struct uio *uio);
235 int fuse_internal_do_getattr(struct vnode *vp, struct vattr *vap,
236 struct ucred *cred, struct thread *td);
237 int fuse_internal_getattr(struct vnode *vp, struct vattr *vap,
238 struct ucred *cred, struct thread *td);
240 /* asynchronous invalidation */
241 int fuse_internal_invalidate_entry(struct mount *mp, struct uio *uio);
242 int fuse_internal_invalidate_inode(struct mount *mp, struct uio *uio);
245 int fuse_internal_mknod(struct vnode *dvp, struct vnode **vpp,
246 struct componentname *cnp, struct vattr *vap);
249 struct pseudo_dirent {
252 int fuse_internal_readdir(struct vnode *vp, struct uio *uio, off_t startoff,
253 struct fuse_filehandle *fufh, struct fuse_iov *cookediov, int *ncookies,
255 int fuse_internal_readdir_processdata(struct uio *uio, off_t startoff,
256 int *fnd_start, size_t reqsize, void *buf, size_t bufsize,
257 struct fuse_iov *cookediov, int *ncookies, u_long **cookiesp);
261 int fuse_internal_remove(struct vnode *dvp, struct vnode *vp,
262 struct componentname *cnp, enum fuse_opcode op);
266 int fuse_internal_rename(struct vnode *fdvp, struct componentname *fcnp,
267 struct vnode *tdvp, struct componentname *tcnp);
271 void fuse_internal_vnode_disappear(struct vnode *vp);
274 int fuse_internal_setattr(struct vnode *vp, struct vattr *va,
275 struct thread *td, struct ucred *cred);
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 /* module load/unload */
322 void fuse_internal_init(void);
323 void fuse_internal_destroy(void);
325 #endif /* _FUSE_INTERNAL_H_ */