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
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.
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.
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
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 #include <sys/cdefs.h>
64 __FBSDID("$FreeBSD$");
66 #include <sys/param.h>
67 #include <sys/module.h>
68 #include <sys/systm.h>
69 #include <sys/errno.h>
70 #include <sys/kernel.h>
72 #include <sys/filio.h>
74 #include <sys/malloc.h>
75 #include <sys/queue.h>
76 #include <sys/limits.h>
78 #include <sys/rwlock.h>
81 #include <sys/mount.h>
82 #include <sys/vnode.h>
83 #include <sys/namei.h>
84 #include <sys/extattr.h>
86 #include <sys/unistd.h>
87 #include <sys/filedesc.h>
89 #include <sys/fcntl.h>
90 #include <sys/dirent.h>
93 #include <sys/sysctl.h>
94 #include <sys/vmmeter.h>
97 #include <vm/vm_extern.h>
99 #include <vm/vm_map.h>
100 #include <vm/vm_page.h>
101 #include <vm/vm_param.h>
102 #include <vm/vm_object.h>
103 #include <vm/vm_pager.h>
104 #include <vm/vnode_pager.h>
105 #include <vm/vm_object.h>
108 #include "fuse_file.h"
109 #include "fuse_internal.h"
110 #include "fuse_ipc.h"
111 #include "fuse_node.h"
114 #include <sys/priv.h>
116 /* Maximum number of hardlinks to a single FUSE file */
117 #define FUSE_LINK_MAX UINT32_MAX
119 SDT_PROVIDER_DECLARE(fusefs);
122 * arg0: verbosity. Higher numbers give more verbose messages
123 * arg1: Textual message
125 SDT_PROBE_DEFINE2(fusefs, , vnops, trace, "int", "char*");
128 static vop_access_t fuse_vnop_access;
129 static vop_advlock_t fuse_vnop_advlock;
130 static vop_bmap_t fuse_vnop_bmap;
131 static vop_close_t fuse_fifo_close;
132 static vop_close_t fuse_vnop_close;
133 static vop_copy_file_range_t fuse_vnop_copy_file_range;
134 static vop_create_t fuse_vnop_create;
135 static vop_deleteextattr_t fuse_vnop_deleteextattr;
136 static vop_fdatasync_t fuse_vnop_fdatasync;
137 static vop_fsync_t fuse_vnop_fsync;
138 static vop_getattr_t fuse_vnop_getattr;
139 static vop_getextattr_t fuse_vnop_getextattr;
140 static vop_inactive_t fuse_vnop_inactive;
141 static vop_ioctl_t fuse_vnop_ioctl;
142 static vop_link_t fuse_vnop_link;
143 static vop_listextattr_t fuse_vnop_listextattr;
144 static vop_lookup_t fuse_vnop_lookup;
145 static vop_mkdir_t fuse_vnop_mkdir;
146 static vop_mknod_t fuse_vnop_mknod;
147 static vop_open_t fuse_vnop_open;
148 static vop_pathconf_t fuse_vnop_pathconf;
149 static vop_read_t fuse_vnop_read;
150 static vop_readdir_t fuse_vnop_readdir;
151 static vop_readlink_t fuse_vnop_readlink;
152 static vop_reclaim_t fuse_vnop_reclaim;
153 static vop_remove_t fuse_vnop_remove;
154 static vop_rename_t fuse_vnop_rename;
155 static vop_rmdir_t fuse_vnop_rmdir;
156 static vop_setattr_t fuse_vnop_setattr;
157 static vop_setextattr_t fuse_vnop_setextattr;
158 static vop_strategy_t fuse_vnop_strategy;
159 static vop_symlink_t fuse_vnop_symlink;
160 static vop_write_t fuse_vnop_write;
161 static vop_getpages_t fuse_vnop_getpages;
162 static vop_print_t fuse_vnop_print;
163 static vop_vptofh_t fuse_vnop_vptofh;
165 struct vop_vector fuse_fifoops = {
166 .vop_default = &fifo_specops,
167 .vop_access = fuse_vnop_access,
168 .vop_close = fuse_fifo_close,
169 .vop_fsync = fuse_vnop_fsync,
170 .vop_getattr = fuse_vnop_getattr,
171 .vop_inactive = fuse_vnop_inactive,
172 .vop_pathconf = fuse_vnop_pathconf,
173 .vop_print = fuse_vnop_print,
174 .vop_read = VOP_PANIC,
175 .vop_reclaim = fuse_vnop_reclaim,
176 .vop_setattr = fuse_vnop_setattr,
177 .vop_write = VOP_PANIC,
178 .vop_vptofh = fuse_vnop_vptofh,
180 VFS_VOP_VECTOR_REGISTER(fuse_fifoops);
182 struct vop_vector fuse_vnops = {
183 .vop_allocate = VOP_EINVAL,
184 .vop_default = &default_vnodeops,
185 .vop_access = fuse_vnop_access,
186 .vop_advlock = fuse_vnop_advlock,
187 .vop_bmap = fuse_vnop_bmap,
188 .vop_close = fuse_vnop_close,
189 .vop_copy_file_range = fuse_vnop_copy_file_range,
190 .vop_create = fuse_vnop_create,
191 .vop_deleteextattr = fuse_vnop_deleteextattr,
192 .vop_fsync = fuse_vnop_fsync,
193 .vop_fdatasync = fuse_vnop_fdatasync,
194 .vop_getattr = fuse_vnop_getattr,
195 .vop_getextattr = fuse_vnop_getextattr,
196 .vop_inactive = fuse_vnop_inactive,
197 .vop_ioctl = fuse_vnop_ioctl,
198 .vop_link = fuse_vnop_link,
199 .vop_listextattr = fuse_vnop_listextattr,
200 .vop_lookup = fuse_vnop_lookup,
201 .vop_mkdir = fuse_vnop_mkdir,
202 .vop_mknod = fuse_vnop_mknod,
203 .vop_open = fuse_vnop_open,
204 .vop_pathconf = fuse_vnop_pathconf,
206 * TODO: implement vop_poll after upgrading to protocol 7.21.
207 * FUSE_POLL was added in protocol 7.11, but it's kind of broken until
208 * 7.21, which adds the ability for the client to choose which poll
209 * events it wants, and for a client to deregister a file handle
211 .vop_read = fuse_vnop_read,
212 .vop_readdir = fuse_vnop_readdir,
213 .vop_readlink = fuse_vnop_readlink,
214 .vop_reclaim = fuse_vnop_reclaim,
215 .vop_remove = fuse_vnop_remove,
216 .vop_rename = fuse_vnop_rename,
217 .vop_rmdir = fuse_vnop_rmdir,
218 .vop_setattr = fuse_vnop_setattr,
219 .vop_setextattr = fuse_vnop_setextattr,
220 .vop_strategy = fuse_vnop_strategy,
221 .vop_symlink = fuse_vnop_symlink,
222 .vop_write = fuse_vnop_write,
223 .vop_getpages = fuse_vnop_getpages,
224 .vop_print = fuse_vnop_print,
225 .vop_vptofh = fuse_vnop_vptofh,
227 VFS_VOP_VECTOR_REGISTER(fuse_vnops);
229 uma_zone_t fuse_pbuf_zone;
231 /* Check permission for extattr operations, much like extattr_check_cred */
233 fuse_extattr_check_cred(struct vnode *vp, int ns, struct ucred *cred,
234 struct thread *td, accmode_t accmode)
236 struct mount *mp = vnode_mount(vp);
237 struct fuse_data *data = fuse_get_mpdata(mp);
238 int default_permissions = data->dataflags & FSESS_DEFAULT_PERMISSIONS;
241 * Kernel-invoked always succeeds.
247 * Do not allow privileged processes in jail to directly manipulate
251 case EXTATTR_NAMESPACE_SYSTEM:
252 if (default_permissions) {
253 return (priv_check_cred(cred, PRIV_VFS_EXTATTR_SYSTEM));
256 case EXTATTR_NAMESPACE_USER:
257 if (default_permissions) {
258 return (fuse_internal_access(vp, accmode, td, cred));
266 /* Get a filehandle for a directory */
268 fuse_filehandle_get_dir(struct vnode *vp, struct fuse_filehandle **fufhp,
269 struct ucred *cred, pid_t pid)
271 if (fuse_filehandle_get(vp, FREAD, fufhp, cred, pid) == 0)
273 return fuse_filehandle_get(vp, FEXEC, fufhp, cred, pid);
276 /* Send FUSE_FLUSH for this vnode */
278 fuse_flush(struct vnode *vp, struct ucred *cred, pid_t pid, int fflag)
280 struct fuse_flush_in *ffi;
281 struct fuse_filehandle *fufh;
282 struct fuse_dispatcher fdi;
283 struct thread *td = curthread;
284 struct mount *mp = vnode_mount(vp);
287 if (fsess_not_impl(vnode_mount(vp), FUSE_FLUSH))
290 err = fuse_filehandle_getrw(vp, fflag, &fufh, cred, pid);
294 fdisp_init(&fdi, sizeof(*ffi));
295 fdisp_make_vp(&fdi, FUSE_FLUSH, vp, td, cred);
297 ffi->fh = fufh->fh_id;
299 * If the file has a POSIX lock then we're supposed to set lock_owner.
300 * If not, then lock_owner is undefined. So we may as well always set
303 ffi->lock_owner = td->td_proc->p_pid;
305 err = fdisp_wait_answ(&fdi);
307 fsess_set_notimpl(mp, FUSE_FLUSH);
314 /* Close wrapper for fifos. */
316 fuse_fifo_close(struct vop_close_args *ap)
318 return (fifo_specops.vop_close(ap));
321 /* Send FUSE_LSEEK for this node */
323 fuse_vnop_do_lseek(struct vnode *vp, struct thread *td, struct ucred *cred,
324 pid_t pid, off_t *offp, int whence)
326 struct fuse_dispatcher fdi;
327 struct fuse_filehandle *fufh;
328 struct fuse_lseek_in *flsi;
329 struct fuse_lseek_out *flso;
330 struct mount *mp = vnode_mount(vp);
333 ASSERT_VOP_LOCKED(vp, __func__);
335 err = fuse_filehandle_getrw(vp, FREAD, &fufh, cred, pid);
338 fdisp_init(&fdi, sizeof(*flsi));
339 fdisp_make_vp(&fdi, FUSE_LSEEK, vp, td, cred);
341 flsi->fh = fufh->fh_id;
342 flsi->offset = *offp;
343 flsi->whence = whence;
344 err = fdisp_wait_answ(&fdi);
346 fsess_set_notimpl(mp, FUSE_LSEEK);
347 } else if (err == 0) {
348 fsess_set_impl(mp, FUSE_LSEEK);
350 *offp = flso->offset;
358 struct vnop_access_args {
360 #if VOP_ACCESS_TAKES_ACCMODE_T
365 struct ucred *a_cred;
370 fuse_vnop_access(struct vop_access_args *ap)
372 struct vnode *vp = ap->a_vp;
373 int accmode = ap->a_accmode;
374 struct ucred *cred = ap->a_cred;
376 struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp));
380 if (fuse_isdeadfs(vp)) {
381 if (vnode_isvroot(vp)) {
386 if (!(data->dataflags & FSESS_INITED)) {
387 if (vnode_isvroot(vp)) {
388 if (priv_check_cred(cred, PRIV_VFS_ADMIN) ||
389 (fuse_match_cred(data->daemoncred, cred) == 0)) {
395 if (vnode_islnk(vp)) {
399 err = fuse_internal_access(vp, accmode, ap->a_td, ap->a_cred);
404 * struct vop_advlock_args {
405 * struct vop_generic_args a_gen;
406 * struct vnode *a_vp;
409 * struct flock *a_fl;
414 fuse_vnop_advlock(struct vop_advlock_args *ap)
416 struct vnode *vp = ap->a_vp;
417 struct flock *fl = ap->a_fl;
418 struct thread *td = curthread;
419 struct ucred *cred = td->td_ucred;
420 pid_t pid = td->td_proc->p_pid;
421 struct fuse_filehandle *fufh;
422 struct fuse_dispatcher fdi;
423 struct fuse_lk_in *fli;
424 struct fuse_lk_out *flo;
427 int flags = ap->a_flags;
429 dataflags = fuse_get_mpdata(vnode_mount(vp))->dataflags;
431 if (fuse_isdeadfs(vp)) {
452 if (!(dataflags & FSESS_POSIX_LOCKS))
453 return vop_stdadvlock(ap);
454 /* FUSE doesn't properly support flock until protocol 7.17 */
456 return vop_stdadvlock(ap);
458 vn_lock(vp, LK_SHARED | LK_RETRY);
460 err = fuse_filehandle_get_anyflags(vp, &fufh, cred, pid);
464 fdisp_init(&fdi, sizeof(*fli));
466 fdisp_make_vp(&fdi, op, vp, td, cred);
468 fli->fh = fufh->fh_id;
469 fli->owner = td->td_proc->p_pid;
470 fli->lk.start = fl->l_start;
472 fli->lk.end = fl->l_start + fl->l_len - 1;
474 fli->lk.end = INT64_MAX;
475 fli->lk.type = fl->l_type;
476 fli->lk.pid = td->td_proc->p_pid;
478 err = fdisp_wait_answ(&fdi);
481 if (err == 0 && op == FUSE_GETLK) {
483 fl->l_type = flo->lk.type;
484 fl->l_pid = flo->lk.pid;
485 if (flo->lk.type != F_UNLCK) {
486 fl->l_start = flo->lk.start;
487 if (flo->lk.end == INT64_MAX)
490 fl->l_len = flo->lk.end - flo->lk.start + 1;
491 fl->l_start = flo->lk.start;
503 struct bufobj **a_bop;
509 fuse_vnop_bmap(struct vop_bmap_args *ap)
511 struct vnode *vp = ap->a_vp;
512 struct bufobj **bo = ap->a_bop;
513 struct thread *td = curthread;
515 struct fuse_dispatcher fdi;
516 struct fuse_bmap_in *fbi;
517 struct fuse_bmap_out *fbo;
518 struct fuse_data *data;
519 struct fuse_vnode_data *fvdat = VTOFUD(vp);
522 daddr_t lbn = ap->a_bn;
523 daddr_t *pbn = ap->a_bnp;
524 int *runp = ap->a_runp;
525 int *runb = ap->a_runb;
529 if (fuse_isdeadfs(vp)) {
533 mp = vnode_mount(vp);
534 data = fuse_get_mpdata(mp);
535 biosize = fuse_iosize(vp);
536 maxrun = MIN(vp->v_mount->mnt_iosize_max / biosize - 1,
537 data->max_readahead_blocks);
543 * The FUSE_BMAP operation does not include the runp and runb
544 * variables, so we must guess. Report nonzero contiguous runs so
545 * cluster_read will combine adjacent reads. It's worthwhile to reduce
546 * upcalls even if we don't know the true physical layout of the file.
548 * FUSE file systems may opt out of read clustering in two ways:
549 * * mounting with -onoclusterr
550 * * Setting max_readahead <= maxbcachebuf during FUSE_INIT
553 *runb = MIN(lbn, maxrun);
554 if (runp != NULL && maxrun == 0)
556 else if (runp != NULL) {
558 * If the file's size is cached, use that value to calculate
559 * runp, even if the cache is expired. runp is only advisory,
560 * and the risk of getting it wrong is not worth the cost of
563 if (fvdat->cached_attrs.va_size != VNOVAL)
564 fsize = fvdat->cached_attrs.va_size;
566 error = fuse_vnode_size(vp, &fsize, td->td_ucred, td);
568 *runp = MIN(MAX(0, fsize / (off_t)biosize - lbn - 1),
574 if (fsess_maybe_impl(mp, FUSE_BMAP)) {
575 fdisp_init(&fdi, sizeof(*fbi));
576 fdisp_make_vp(&fdi, FUSE_BMAP, vp, td, td->td_ucred);
579 fbi->blocksize = biosize;
580 error = fdisp_wait_answ(&fdi);
581 if (error == ENOSYS) {
583 fsess_set_notimpl(mp, FUSE_BMAP);
587 if (error == 0 && pbn != NULL)
594 /* If the daemon doesn't support BMAP, make up a sensible default */
596 *pbn = lbn * btodb(biosize);
601 struct vop_close_args {
604 struct ucred *a_cred;
609 fuse_vnop_close(struct vop_close_args *ap)
611 struct vnode *vp = ap->a_vp;
612 struct ucred *cred = ap->a_cred;
613 int fflag = ap->a_fflag;
614 struct thread *td = ap->a_td;
615 pid_t pid = td->td_proc->p_pid;
618 if (fuse_isdeadfs(vp))
622 if (fflag & IO_NDELAY)
625 err = fuse_flush(vp, cred, pid, fflag);
626 /* TODO: close the file handle, if we're sure it's no longer used */
627 if ((VTOFUD(vp)->flag & FN_SIZECHANGE) != 0) {
628 fuse_vnode_savesize(vp, cred, td->td_proc->p_pid);
634 struct vop_copy_file_range_args {
635 struct vop_generic_args a_gen;
636 struct vnode *a_invp;
638 struct vnode *a_outvp;
641 unsigned int a_flags;
642 struct ucred *a_incred;
643 struct ucred *a_outcred;
644 struct thread *a_fsizetd;
648 fuse_vnop_copy_file_range(struct vop_copy_file_range_args *ap)
650 struct vnode *invp = ap->a_invp;
651 struct vnode *outvp = ap->a_outvp;
652 struct mount *mp = vnode_mount(invp);
653 struct fuse_dispatcher fdi;
654 struct fuse_filehandle *infufh, *outfufh;
655 struct fuse_copy_file_range_in *fcfri;
656 struct ucred *incred = ap->a_incred;
657 struct ucred *outcred = ap->a_outcred;
658 struct fuse_write_out *fwo;
664 if (mp != vnode_mount(outvp))
667 if (incred->cr_uid != outcred->cr_uid)
670 if (incred->cr_groups[0] != outcred->cr_groups[0])
673 if (fsess_not_impl(mp, FUSE_COPY_FILE_RANGE))
676 if (ap->a_fsizetd == NULL)
680 pid = td->td_proc->p_pid;
682 /* Lock both vnodes, avoiding risk of deadlock. */
684 err = vn_lock(outvp, LK_EXCLUSIVE);
688 err = vn_lock(invp, LK_SHARED | LK_NOWAIT);
692 err = vn_lock(invp, LK_SHARED);
700 err = fuse_filehandle_getrw(invp, FREAD, &infufh, incred, pid);
704 err = fuse_filehandle_getrw(outvp, FWRITE, &outfufh, outcred, pid);
709 io.uio_offset = *ap->a_outoffp;
710 io.uio_resid = *ap->a_lenp;
711 err = vn_rlimit_fsize(outvp, &io, ap->a_fsizetd);
716 fdisp_init(&fdi, sizeof(*fcfri));
717 fdisp_make_vp(&fdi, FUSE_COPY_FILE_RANGE, invp, td, incred);
719 fcfri->fh_in = infufh->fh_id;
720 fcfri->off_in = *ap->a_inoffp;
721 fcfri->nodeid_out = VTOI(outvp);
722 fcfri->fh_out = outfufh->fh_id;
723 fcfri->off_out = *ap->a_outoffp;
724 fcfri->len = *ap->a_lenp;
727 err = fdisp_wait_answ(&fdi);
730 *ap->a_lenp = fwo->size;
731 *ap->a_inoffp += fwo->size;
732 *ap->a_outoffp += fwo->size;
733 fuse_internal_clear_suid_on_write(outvp, outcred, td);
743 fsess_set_notimpl(mp, FUSE_COPY_FILE_RANGE);
745 err = vn_generic_copy_file_range(ap->a_invp, ap->a_inoffp,
746 ap->a_outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags,
747 ap->a_incred, ap->a_outcred, ap->a_fsizetd);
754 fdisp_make_mknod_for_fallback(
755 struct fuse_dispatcher *fdip,
756 struct componentname *cnp,
762 enum fuse_opcode *op)
764 struct fuse_mknod_in *fmni;
766 fdisp_init(fdip, sizeof(*fmni) + cnp->cn_namelen + 1);
768 fdisp_make(fdip, *op, vnode_mount(dvp), parentnid, td, cred);
772 memcpy((char *)fdip->indata + sizeof(*fmni), cnp->cn_nameptr,
774 ((char *)fdip->indata)[sizeof(*fmni) + cnp->cn_namelen] = '\0';
777 struct vnop_create_args {
779 struct vnode **a_vpp;
780 struct componentname *a_cnp;
785 fuse_vnop_create(struct vop_create_args *ap)
787 struct vnode *dvp = ap->a_dvp;
788 struct vnode **vpp = ap->a_vpp;
789 struct componentname *cnp = ap->a_cnp;
790 struct vattr *vap = ap->a_vap;
791 struct thread *td = cnp->cn_thread;
792 struct ucred *cred = cnp->cn_cred;
794 struct fuse_data *data;
795 struct fuse_create_in *fci;
796 struct fuse_entry_out *feo;
797 struct fuse_open_out *foo;
798 struct fuse_dispatcher fdi, fdi2;
799 struct fuse_dispatcher *fdip = &fdi;
800 struct fuse_dispatcher *fdip2 = NULL;
804 struct mount *mp = vnode_mount(dvp);
805 data = fuse_get_mpdata(mp);
806 uint64_t parentnid = VTOFUD(dvp)->nid;
807 mode_t mode = MAKEIMODE(vap->va_type, vap->va_mode);
811 if (fuse_isdeadfs(dvp))
814 /* FUSE expects sockets to be created with FUSE_MKNOD */
815 if (vap->va_type == VSOCK)
816 return fuse_internal_mknod(dvp, vpp, cnp, vap);
819 * VOP_CREATE doesn't tell us the open(2) flags, so we guess. Only a
820 * writable mode makes sense, and we might as well include readability
825 bzero(&fdi, sizeof(fdi));
827 if (vap->va_type != VREG)
830 if (fsess_not_impl(mp, FUSE_CREATE) || vap->va_type == VSOCK) {
831 /* Fallback to FUSE_MKNOD/FUSE_OPEN */
832 fdisp_make_mknod_for_fallback(fdip, cnp, dvp, parentnid, td,
835 /* Use FUSE_CREATE */
839 fdisp_init(fdip, sizeof(*fci) + cnp->cn_namelen + 1);
840 fdisp_make(fdip, op, vnode_mount(dvp), parentnid, td, cred);
843 fci->flags = O_CREAT | flags;
844 if (fuse_libabi_geq(data, 7, 12)) {
845 insize = sizeof(*fci);
846 fci->umask = td->td_proc->p_pd->pd_cmask;
848 insize = sizeof(struct fuse_open_in);
851 memcpy((char *)fdip->indata + insize, cnp->cn_nameptr,
853 ((char *)fdip->indata)[insize + cnp->cn_namelen] = '\0';
856 err = fdisp_wait_answ(fdip);
859 if (err == ENOSYS && op == FUSE_CREATE) {
860 fsess_set_notimpl(mp, FUSE_CREATE);
862 fdisp_make_mknod_for_fallback(fdip, cnp, dvp,
863 parentnid, td, cred, mode, &op);
864 err = fdisp_wait_answ(fdip);
872 if ((err = fuse_internal_checkentry(feo, vap->va_type))) {
876 if (op == FUSE_CREATE) {
877 foo = (struct fuse_open_out*)(feo + 1);
879 /* Issue a separate FUSE_OPEN */
880 struct fuse_open_in *foi;
883 fdisp_init(fdip2, sizeof(*foi));
884 fdisp_make(fdip2, FUSE_OPEN, vnode_mount(dvp), feo->nodeid, td,
888 err = fdisp_wait_answ(fdip2);
893 err = fuse_vnode_get(mp, feo, feo->nodeid, dvp, vpp, cnp, vap->va_type);
895 struct fuse_release_in *fri;
896 uint64_t nodeid = feo->nodeid;
897 uint64_t fh_id = foo->fh;
899 fdisp_init(fdip, sizeof(*fri));
900 fdisp_make(fdip, FUSE_RELEASE, mp, nodeid, td, cred);
904 fuse_insert_callback(fdip->tick, fuse_internal_forget_callback);
905 fuse_insert_message(fdip->tick, false);
908 ASSERT_VOP_ELOCKED(*vpp, "fuse_vnop_create");
909 fuse_internal_cache_attrs(*vpp, &feo->attr, feo->attr_valid,
910 feo->attr_valid_nsec, NULL, true);
912 fuse_filehandle_init(*vpp, FUFH_RDWR, NULL, td, cred, foo);
913 fuse_vnode_open(*vpp, foo->open_flags, td);
915 * Purge the parent's attribute cache because the daemon should've
916 * updated its mtime and ctime
918 fuse_vnode_clear_attr_cache(dvp);
919 cache_purge_negative(dvp);
923 fdisp_destroy(fdip2);
929 struct vnop_fdatasync_args {
930 struct vop_generic_args a_gen;
932 struct thread * a_td;
936 fuse_vnop_fdatasync(struct vop_fdatasync_args *ap)
938 struct vnode *vp = ap->a_vp;
939 struct thread *td = ap->a_td;
940 int waitfor = MNT_WAIT;
944 if (fuse_isdeadfs(vp)) {
947 if ((err = vop_stdfdatasync_buf(ap)))
950 return fuse_internal_fsync(vp, td, waitfor, true);
954 struct vnop_fsync_args {
955 struct vop_generic_args a_gen;
958 struct thread * a_td;
962 fuse_vnop_fsync(struct vop_fsync_args *ap)
964 struct vnode *vp = ap->a_vp;
965 struct thread *td = ap->a_td;
966 int waitfor = ap->a_waitfor;
969 if (fuse_isdeadfs(vp)) {
972 if ((err = vop_stdfsync(ap)))
975 return fuse_internal_fsync(vp, td, waitfor, false);
979 struct vnop_getattr_args {
982 struct ucred *a_cred;
987 fuse_vnop_getattr(struct vop_getattr_args *ap)
989 struct vnode *vp = ap->a_vp;
990 struct vattr *vap = ap->a_vap;
991 struct ucred *cred = ap->a_cred;
992 struct thread *td = curthread;
997 dataflags = fuse_get_mpdata(vnode_mount(vp))->dataflags;
999 /* Note that we are not bailing out on a dead file system just yet. */
1001 if (!(dataflags & FSESS_INITED)) {
1002 if (!vnode_isvroot(vp)) {
1003 fdata_set_dead(fuse_get_mpdata(vnode_mount(vp)));
1010 err = fuse_internal_getattr(vp, vap, cred, td);
1011 if (err == ENOTCONN && vnode_isvroot(vp)) {
1012 /* see comment in fuse_vfsop_statfs() */
1019 bzero(vap, sizeof(*vap));
1020 vap->va_type = vnode_vtype(vp);
1026 struct vnop_inactive_args {
1031 fuse_vnop_inactive(struct vop_inactive_args *ap)
1033 struct vnode *vp = ap->a_vp;
1034 struct thread *td = curthread;
1036 struct fuse_vnode_data *fvdat = VTOFUD(vp);
1037 struct fuse_filehandle *fufh, *fufh_tmp;
1041 LIST_FOREACH_SAFE(fufh, &fvdat->handles, next, fufh_tmp) {
1042 if (need_flush && vp->v_type == VREG) {
1043 if ((VTOFUD(vp)->flag & FN_SIZECHANGE) != 0) {
1044 fuse_vnode_savesize(vp, NULL, 0);
1046 if ((fvdat->flag & FN_REVOKED) != 0)
1047 fuse_io_invalbuf(vp, td);
1049 fuse_io_flushbuf(vp, MNT_WAIT, td);
1052 fuse_filehandle_close(vp, fufh, td, NULL);
1055 if ((fvdat->flag & FN_REVOKED) != 0)
1062 struct vnop_ioctl_args {
1067 struct ucred *a_cred;
1068 struct thread *a_td;
1072 fuse_vnop_ioctl(struct vop_ioctl_args *ap)
1074 struct vnode *vp = ap->a_vp;
1075 struct mount *mp = vnode_mount(vp);
1076 struct ucred *cred = ap->a_cred;
1078 pid_t pid = ap->a_td->td_proc->p_pid;
1081 switch (ap->a_command) {
1084 /* Call FUSE_LSEEK, if we can, or fall back to vop_stdioctl */
1085 if (fsess_maybe_impl(mp, FUSE_LSEEK)) {
1089 if (ap->a_command == FIOSEEKDATA)
1094 vn_lock(vp, LK_SHARED | LK_RETRY);
1095 err = fuse_vnop_do_lseek(vp, ap->a_td, cred, pid, offp,
1099 if (fsess_not_impl(mp, FUSE_LSEEK))
1100 err = vop_stdioctl(ap);
1103 /* TODO: implement FUSE_IOCTL */
1112 struct vnop_link_args {
1113 struct vnode *a_tdvp;
1115 struct componentname *a_cnp;
1119 fuse_vnop_link(struct vop_link_args *ap)
1121 struct vnode *vp = ap->a_vp;
1122 struct vnode *tdvp = ap->a_tdvp;
1123 struct componentname *cnp = ap->a_cnp;
1125 struct vattr *vap = VTOVA(vp);
1127 struct fuse_dispatcher fdi;
1128 struct fuse_entry_out *feo;
1129 struct fuse_link_in fli;
1133 if (fuse_isdeadfs(vp)) {
1136 if (vnode_mount(tdvp) != vnode_mount(vp)) {
1141 * This is a seatbelt check to protect naive userspace filesystems from
1142 * themselves and the limitations of the FUSE IPC protocol. If a
1143 * filesystem does not allow attribute caching, assume it is capable of
1144 * validating that nlink does not overflow.
1146 if (vap != NULL && vap->va_nlink >= FUSE_LINK_MAX)
1148 fli.oldnodeid = VTOI(vp);
1150 fdisp_init(&fdi, 0);
1151 fuse_internal_newentry_makerequest(vnode_mount(tdvp), VTOI(tdvp), cnp,
1152 FUSE_LINK, &fli, sizeof(fli), &fdi);
1153 if ((err = fdisp_wait_answ(&fdi))) {
1158 err = fuse_internal_checkentry(feo, vnode_vtype(vp));
1161 * Purge the parent's attribute cache because the daemon
1162 * should've updated its mtime and ctime
1164 fuse_vnode_clear_attr_cache(tdvp);
1165 fuse_internal_cache_attrs(vp, &feo->attr, feo->attr_valid,
1166 feo->attr_valid_nsec, NULL, true);
1169 fdisp_destroy(&fdi);
1173 struct fuse_lookup_alloc_arg {
1174 struct fuse_entry_out *feo;
1175 struct componentname *cnp;
1180 /* Callback for vn_get_ino */
1182 fuse_lookup_alloc(struct mount *mp, void *arg, int lkflags, struct vnode **vpp)
1184 struct fuse_lookup_alloc_arg *flaa = arg;
1186 return fuse_vnode_get(mp, flaa->feo, flaa->nid, NULL, vpp, flaa->cnp,
1190 SDT_PROBE_DEFINE3(fusefs, , vnops, cache_lookup,
1191 "int", "struct timespec*", "struct timespec*");
1193 struct vnop_lookup_args {
1194 struct vnodeop_desc *a_desc;
1195 struct vnode *a_dvp;
1196 struct vnode **a_vpp;
1197 struct componentname *a_cnp;
1201 fuse_vnop_lookup(struct vop_lookup_args *ap)
1203 struct vnode *dvp = ap->a_dvp;
1204 struct vnode **vpp = ap->a_vpp;
1205 struct componentname *cnp = ap->a_cnp;
1206 struct thread *td = cnp->cn_thread;
1207 struct ucred *cred = cnp->cn_cred;
1209 int nameiop = cnp->cn_nameiop;
1210 int flags = cnp->cn_flags;
1211 int wantparent = flags & (LOCKPARENT | WANTPARENT);
1212 int islastcn = flags & ISLASTCN;
1213 struct mount *mp = vnode_mount(dvp);
1214 struct fuse_data *data = fuse_get_mpdata(mp);
1215 int default_permissions = data->dataflags & FSESS_DEFAULT_PERMISSIONS;
1219 struct vnode *vp = NULL;
1221 struct fuse_dispatcher fdi;
1222 bool did_lookup = false;
1223 struct fuse_entry_out *feo = NULL;
1224 enum vtype vtyp; /* vnode type of target */
1225 off_t filesize; /* filesize of target */
1229 if (fuse_isdeadfs(dvp)) {
1233 if (!vnode_isdir(dvp))
1236 if (islastcn && vfs_isrdonly(mp) && (nameiop != LOOKUP))
1239 if ((cnp->cn_flags & NOEXECCHECK) != 0)
1240 cnp->cn_flags &= ~NOEXECCHECK;
1241 else if ((err = fuse_internal_access(dvp, VEXEC, td, cred)))
1244 if (flags & ISDOTDOT) {
1245 KASSERT(VTOFUD(dvp)->flag & FN_PARENT_NID,
1246 ("Looking up .. is TODO"));
1247 nid = VTOFUD(dvp)->parent_nid;
1250 /* .. is obviously a directory */
1253 } else if (cnp->cn_namelen == 1 && *(cnp->cn_nameptr) == '.') {
1255 /* . is obviously a directory */
1259 struct timespec now, timeout;
1260 int ncpticks; /* here to accomodate for API contract */
1262 err = cache_lookup(dvp, vpp, cnp, &timeout, &ncpticks);
1263 getnanouptime(&now);
1264 SDT_PROBE3(fusefs, , vnops, cache_lookup, err, &timeout, &now);
1266 case -1: /* positive match */
1267 if (timespeccmp(&timeout, &now, >)) {
1268 counter_u64_add(fuse_lookup_cache_hits, 1);
1271 counter_u64_add(fuse_lookup_cache_misses, 1);
1273 &VTOFUD(*vpp)->entry_cache_timeout);
1284 case 0: /* no match in cache */
1285 counter_u64_add(fuse_lookup_cache_misses, 1);
1288 case ENOENT: /* negative match */
1289 getnanouptime(&now);
1290 if (timespeccmp(&timeout, &now, <=)) {
1292 cache_purge_negative(dvp);
1301 fdisp_init(&fdi, cnp->cn_namelen + 1);
1302 fdisp_make(&fdi, FUSE_LOOKUP, mp, nid, td, cred);
1304 memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen);
1305 ((char *)fdi.indata)[cnp->cn_namelen] = '\0';
1306 lookup_err = fdisp_wait_answ(&fdi);
1310 /* lookup call succeeded */
1311 feo = (struct fuse_entry_out *)fdi.answ;
1314 /* zero nodeid means ENOENT and cache it */
1315 struct timespec timeout;
1317 fdi.answ_stat = ENOENT;
1318 lookup_err = ENOENT;
1319 if (cnp->cn_flags & MAKEENTRY) {
1320 fuse_validity_2_timespec(feo, &timeout);
1321 cache_enter_time(dvp, *vpp, cnp,
1324 } else if (nid == FUSE_ROOT_ID) {
1325 lookup_err = EINVAL;
1327 vtyp = IFTOVT(feo->attr.mode);
1328 filesize = feo->attr.size;
1330 if (lookup_err && (!fdi.answ_stat || lookup_err != ENOENT)) {
1331 fdisp_destroy(&fdi);
1335 /* lookup_err, if non-zero, must be ENOENT at this point */
1338 /* Entry not found */
1339 if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
1340 if (default_permissions)
1341 err = fuse_internal_access(dvp, VWRITE, td,
1347 * Set the SAVENAME flag to hold onto the
1348 * pathname for use later in VOP_CREATE or
1351 cnp->cn_flags |= SAVENAME;
1359 /* Entry was found */
1360 if (flags & ISDOTDOT) {
1361 struct fuse_lookup_alloc_arg flaa;
1367 err = vn_vget_ino_gen(dvp, fuse_lookup_alloc, &flaa, 0,
1370 } else if (nid == VTOI(dvp)) {
1374 struct fuse_vnode_data *fvdat;
1376 err = fuse_vnode_get(vnode_mount(dvp), feo, nid, dvp,
1384 fuse_internal_cache_attrs(*vpp, &feo->attr,
1385 feo->attr_valid, feo->attr_valid_nsec, NULL, true);
1386 fuse_validity_2_bintime(feo->entry_valid,
1387 feo->entry_valid_nsec,
1388 &fvdat->entry_cache_timeout);
1390 if ((nameiop == DELETE || nameiop == RENAME) &&
1391 islastcn && default_permissions)
1393 struct vattr dvattr;
1395 err = fuse_internal_access(dvp, VWRITE, td,
1400 * if the parent's sticky bit is set, check
1401 * whether we're allowed to remove the file.
1402 * Need to figure out the vnode locking to make
1405 fuse_internal_getattr(dvp, &dvattr, cred, td);
1406 if ((dvattr.va_mode & S_ISTXT) &&
1407 fuse_internal_access(dvp, VADMIN, td,
1409 fuse_internal_access(*vpp, VADMIN, td,
1417 (nameiop == DELETE) ||
1418 (nameiop == RENAME && wantparent))) {
1419 cnp->cn_flags |= SAVENAME;
1425 if (vp != NULL && dvp != vp)
1427 else if (vp != NULL)
1432 fdisp_destroy(&fdi);
1438 struct vnop_mkdir_args {
1439 struct vnode *a_dvp;
1440 struct vnode **a_vpp;
1441 struct componentname *a_cnp;
1442 struct vattr *a_vap;
1446 fuse_vnop_mkdir(struct vop_mkdir_args *ap)
1448 struct vnode *dvp = ap->a_dvp;
1449 struct vnode **vpp = ap->a_vpp;
1450 struct componentname *cnp = ap->a_cnp;
1451 struct vattr *vap = ap->a_vap;
1453 struct fuse_mkdir_in fmdi;
1455 if (fuse_isdeadfs(dvp)) {
1458 fmdi.mode = MAKEIMODE(vap->va_type, vap->va_mode);
1459 fmdi.umask = curthread->td_proc->p_pd->pd_cmask;
1461 return (fuse_internal_newentry(dvp, vpp, cnp, FUSE_MKDIR, &fmdi,
1462 sizeof(fmdi), VDIR));
1466 struct vnop_mknod_args {
1467 struct vnode *a_dvp;
1468 struct vnode **a_vpp;
1469 struct componentname *a_cnp;
1470 struct vattr *a_vap;
1474 fuse_vnop_mknod(struct vop_mknod_args *ap)
1477 struct vnode *dvp = ap->a_dvp;
1478 struct vnode **vpp = ap->a_vpp;
1479 struct componentname *cnp = ap->a_cnp;
1480 struct vattr *vap = ap->a_vap;
1482 if (fuse_isdeadfs(dvp))
1485 return fuse_internal_mknod(dvp, vpp, cnp, vap);
1489 struct vop_open_args {
1492 struct ucred *a_cred;
1493 struct thread *a_td;
1494 int a_fdidx; / struct file *a_fp;
1498 fuse_vnop_open(struct vop_open_args *ap)
1500 struct vnode *vp = ap->a_vp;
1501 int a_mode = ap->a_mode;
1502 struct thread *td = ap->a_td;
1503 struct ucred *cred = ap->a_cred;
1504 pid_t pid = td->td_proc->p_pid;
1505 struct fuse_vnode_data *fvdat;
1507 if (fuse_isdeadfs(vp))
1509 if (vp->v_type == VCHR || vp->v_type == VBLK || vp->v_type == VFIFO)
1510 return (EOPNOTSUPP);
1511 if ((a_mode & (FREAD | FWRITE | FEXEC)) == 0)
1516 if (fuse_filehandle_validrw(vp, a_mode, cred, pid)) {
1517 fuse_vnode_open(vp, 0, td);
1521 return fuse_filehandle_open(vp, a_mode, NULL, td, cred);
1525 fuse_vnop_pathconf(struct vop_pathconf_args *ap)
1527 struct vnode *vp = ap->a_vp;
1530 switch (ap->a_name) {
1531 case _PC_FILESIZEBITS:
1535 *ap->a_retval = NAME_MAX;
1538 *ap->a_retval = MIN(LONG_MAX, FUSE_LINK_MAX);
1540 case _PC_SYMLINK_MAX:
1541 *ap->a_retval = MAXPATHLEN;
1546 case _PC_MIN_HOLE_SIZE:
1548 * The FUSE protocol provides no mechanism for a server to
1549 * report _PC_MIN_HOLE_SIZE. It's a protocol bug. Instead,
1550 * return EINVAL if the server does not support FUSE_LSEEK, or
1553 mp = vnode_mount(vp);
1554 if (!fsess_is_impl(mp, FUSE_LSEEK) &&
1555 !fsess_not_impl(mp, FUSE_LSEEK)) {
1558 /* Issue a FUSE_LSEEK to find out if it's implemented */
1559 fuse_vnop_do_lseek(vp, curthread, curthread->td_ucred,
1560 curthread->td_proc->p_pid, &offset, SEEK_DATA);
1563 if (fsess_is_impl(mp, FUSE_LSEEK)) {
1568 * Probably FUSE_LSEEK is not implemented. It might
1569 * be, if the FUSE_LSEEK above returned an error like
1570 * EACCES, but in that case we can't tell, so it's
1571 * safest to report EINVAL anyway.
1576 return (vop_stdpathconf(ap));
1581 struct vnop_read_args {
1585 struct ucred *a_cred;
1589 fuse_vnop_read(struct vop_read_args *ap)
1591 struct vnode *vp = ap->a_vp;
1592 struct uio *uio = ap->a_uio;
1593 int ioflag = ap->a_ioflag;
1594 struct ucred *cred = ap->a_cred;
1595 pid_t pid = curthread->td_proc->p_pid;
1597 if (fuse_isdeadfs(vp)) {
1601 if (VTOFUD(vp)->flag & FN_DIRECTIO) {
1602 ioflag |= IO_DIRECT;
1605 return fuse_io_dispatch(vp, uio, ioflag, cred, pid);
1609 struct vnop_readdir_args {
1612 struct ucred *a_cred;
1619 fuse_vnop_readdir(struct vop_readdir_args *ap)
1621 struct vnode *vp = ap->a_vp;
1622 struct uio *uio = ap->a_uio;
1623 struct ucred *cred = ap->a_cred;
1624 struct fuse_filehandle *fufh = NULL;
1625 struct fuse_iov cookediov;
1631 bool closefufh = false;
1632 pid_t pid = curthread->td_proc->p_pid;
1636 if (fuse_isdeadfs(vp)) {
1639 if ( /* XXXIP ((uio_iovcnt(uio) > 1)) || */
1640 (uio_resid(uio) < sizeof(struct dirent))) {
1644 tresid = uio->uio_resid;
1645 startoff = uio->uio_offset;
1646 err = fuse_filehandle_get_dir(vp, &fufh, cred, pid);
1647 if (err == EBADF && vnode_mount(vp)->mnt_flag & MNT_EXPORTED) {
1649 * nfsd will do VOP_READDIR without first doing VOP_OPEN. We
1650 * must implicitly open the directory here
1652 err = fuse_filehandle_open(vp, FREAD, &fufh, curthread, cred);
1655 * When a directory is opened, it must be read from
1656 * the beginning. Hopefully, the "startoff" still
1657 * exists as an offset cookie for the directory.
1658 * If not, it will read the entire directory without
1659 * returning any entries and just return eof.
1661 uio->uio_offset = 0;
1667 if (ap->a_ncookies != NULL) {
1668 ncookies = uio->uio_resid /
1669 (offsetof(struct dirent, d_name) + 4) + 1;
1670 cookies = malloc(ncookies * sizeof(*cookies), M_TEMP, M_WAITOK);
1671 *ap->a_ncookies = ncookies;
1672 *ap->a_cookies = cookies;
1677 #define DIRCOOKEDSIZE FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + MAXNAMLEN + 1)
1678 fiov_init(&cookediov, DIRCOOKEDSIZE);
1680 err = fuse_internal_readdir(vp, uio, startoff, fufh, &cookediov,
1681 &ncookies, cookies);
1683 fiov_teardown(&cookediov);
1685 fuse_filehandle_close(vp, fufh, curthread, cred);
1687 if (ap->a_ncookies != NULL) {
1689 *ap->a_ncookies -= ncookies;
1691 free(*ap->a_cookies, M_TEMP);
1692 *ap->a_ncookies = 0;
1693 *ap->a_cookies = NULL;
1696 if (err == 0 && tresid == uio->uio_resid)
1703 struct vnop_readlink_args {
1706 struct ucred *a_cred;
1710 fuse_vnop_readlink(struct vop_readlink_args *ap)
1712 struct vnode *vp = ap->a_vp;
1713 struct uio *uio = ap->a_uio;
1714 struct ucred *cred = ap->a_cred;
1716 struct fuse_dispatcher fdi;
1719 if (fuse_isdeadfs(vp)) {
1722 if (!vnode_islnk(vp)) {
1725 fdisp_init(&fdi, 0);
1726 err = fdisp_simple_putget_vp(&fdi, FUSE_READLINK, vp, curthread, cred);
1730 if (((char *)fdi.answ)[0] == '/' &&
1731 fuse_get_mpdata(vnode_mount(vp))->dataflags & FSESS_PUSH_SYMLINKS_IN) {
1732 char *mpth = vnode_mount(vp)->mnt_stat.f_mntonname;
1734 err = uiomove(mpth, strlen(mpth), uio);
1737 err = uiomove(fdi.answ, fdi.iosize, uio);
1740 fdisp_destroy(&fdi);
1745 struct vnop_reclaim_args {
1750 fuse_vnop_reclaim(struct vop_reclaim_args *ap)
1752 struct vnode *vp = ap->a_vp;
1753 struct thread *td = curthread;
1754 struct fuse_vnode_data *fvdat = VTOFUD(vp);
1755 struct fuse_filehandle *fufh, *fufh_tmp;
1758 panic("FUSE: no vnode data during recycling");
1760 LIST_FOREACH_SAFE(fufh, &fvdat->handles, next, fufh_tmp) {
1761 printf("FUSE: vnode being reclaimed with open fufh "
1762 "(type=%#x)", fufh->fufh_type);
1763 fuse_filehandle_close(vp, fufh, td, NULL);
1766 if (!fuse_isdeadfs(vp) && fvdat->nlookup > 0) {
1767 fuse_internal_forget_send(vnode_mount(vp), td, NULL, VTOI(vp),
1771 vfs_hash_remove(vp);
1772 fuse_vnode_destroy(vp);
1778 struct vnop_remove_args {
1779 struct vnode *a_dvp;
1781 struct componentname *a_cnp;
1785 fuse_vnop_remove(struct vop_remove_args *ap)
1787 struct vnode *dvp = ap->a_dvp;
1788 struct vnode *vp = ap->a_vp;
1789 struct componentname *cnp = ap->a_cnp;
1793 if (fuse_isdeadfs(vp)) {
1796 if (vnode_isdir(vp)) {
1800 err = fuse_internal_remove(dvp, vp, cnp, FUSE_UNLINK);
1806 struct vnop_rename_args {
1807 struct vnode *a_fdvp;
1808 struct vnode *a_fvp;
1809 struct componentname *a_fcnp;
1810 struct vnode *a_tdvp;
1811 struct vnode *a_tvp;
1812 struct componentname *a_tcnp;
1816 fuse_vnop_rename(struct vop_rename_args *ap)
1818 struct vnode *fdvp = ap->a_fdvp;
1819 struct vnode *fvp = ap->a_fvp;
1820 struct componentname *fcnp = ap->a_fcnp;
1821 struct vnode *tdvp = ap->a_tdvp;
1822 struct vnode *tvp = ap->a_tvp;
1823 struct componentname *tcnp = ap->a_tcnp;
1824 struct fuse_data *data;
1825 bool newparent = fdvp != tdvp;
1826 bool isdir = fvp->v_type == VDIR;
1829 if (fuse_isdeadfs(fdvp)) {
1832 if (fvp->v_mount != tdvp->v_mount ||
1833 (tvp && fvp->v_mount != tvp->v_mount)) {
1834 SDT_PROBE2(fusefs, , vnops, trace, 1, "cross-device rename");
1841 * FUSE library is expected to check if target directory is not
1842 * under the source directory in the file system tree.
1843 * Linux performs this check at VFS level.
1846 * If source is a directory, and it will get a new parent, user must
1847 * have write permission to it, so ".." can be modified.
1849 data = fuse_get_mpdata(vnode_mount(tdvp));
1850 if (data->dataflags & FSESS_DEFAULT_PERMISSIONS && isdir && newparent) {
1851 err = fuse_internal_access(fvp, VWRITE,
1852 tcnp->cn_thread, tcnp->cn_cred);
1856 sx_xlock(&data->rename_lock);
1857 err = fuse_internal_rename(fdvp, fcnp, tdvp, tcnp);
1860 fuse_vnode_setparent(fvp, tdvp);
1862 fuse_vnode_setparent(tvp, NULL);
1864 sx_unlock(&data->rename_lock);
1866 if (tvp != NULL && tvp != fvp) {
1869 if (vnode_isdir(fvp)) {
1870 if ((tvp != NULL) && vnode_isdir(tvp)) {
1891 struct vnop_rmdir_args {
1892 struct vnode *a_dvp;
1894 struct componentname *a_cnp;
1898 fuse_vnop_rmdir(struct vop_rmdir_args *ap)
1900 struct vnode *dvp = ap->a_dvp;
1901 struct vnode *vp = ap->a_vp;
1905 if (fuse_isdeadfs(vp)) {
1908 if (VTOFUD(vp) == VTOFUD(dvp)) {
1911 err = fuse_internal_remove(dvp, vp, ap->a_cnp, FUSE_RMDIR);
1917 struct vnop_setattr_args {
1919 struct vattr *a_vap;
1920 struct ucred *a_cred;
1921 struct thread *a_td;
1925 fuse_vnop_setattr(struct vop_setattr_args *ap)
1927 struct vnode *vp = ap->a_vp;
1928 struct vattr *vap = ap->a_vap;
1929 struct ucred *cred = ap->a_cred;
1930 struct thread *td = curthread;
1932 struct fuse_data *data;
1933 struct vattr old_va;
1936 accmode_t accmode = 0;
1938 bool drop_suid = false;
1941 mp = vnode_mount(vp);
1942 data = fuse_get_mpdata(mp);
1943 dataflags = data->dataflags;
1944 checkperm = dataflags & FSESS_DEFAULT_PERMISSIONS;
1945 if (cred->cr_ngroups > 0)
1946 cr_gid = cred->cr_groups[0];
1950 if (fuse_isdeadfs(vp)) {
1954 if (vap->va_uid != (uid_t)VNOVAL) {
1956 /* Only root may change a file's owner */
1957 err = priv_check_cred(cred, PRIV_VFS_CHOWN);
1959 /* As a special case, allow the null chown */
1960 err2 = fuse_internal_getattr(vp, &old_va, cred,
1964 if (vap->va_uid != old_va.va_uid)
1974 if (vap->va_gid != (gid_t)VNOVAL) {
1975 if (checkperm && priv_check_cred(cred, PRIV_VFS_CHOWN))
1977 if (checkperm && !groupmember(vap->va_gid, cred))
1980 * Non-root users may only chgrp to one of their own
1983 err = priv_check_cred(cred, PRIV_VFS_CHOWN);
1985 /* As a special case, allow the null chgrp */
1986 err2 = fuse_internal_getattr(vp, &old_va, cred,
1990 if (vap->va_gid != old_va.va_gid)
1998 if (vap->va_size != VNOVAL) {
1999 switch (vp->v_type) {
2004 if (vfs_isrdonly(mp))
2009 * According to POSIX, the result is unspecified
2010 * for file types other than regular files,
2011 * directories and shared memory objects. We
2012 * don't support shared memory objects in the file
2013 * system, and have dubious support for truncating
2014 * symlinks. Just ignore the request in other cases.
2018 /* Don't set accmode. Permission to trunc is checked upstack */
2020 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
2021 if (vap->va_vaflags & VA_UTIMES_NULL)
2027 if (vap->va_mode != (mode_t)VNOVAL)
2028 vap->va_mode &= ~(S_ISUID | S_ISGID);
2030 err = fuse_internal_getattr(vp, &old_va, cred, td);
2033 vap->va_mode = old_va.va_mode & ~(S_ISUID | S_ISGID);
2036 if (vap->va_mode != (mode_t)VNOVAL) {
2037 /* Only root may set the sticky bit on non-directories */
2038 if (checkperm && vp->v_type != VDIR && (vap->va_mode & S_ISTXT)
2039 && priv_check_cred(cred, PRIV_VFS_STICKYFILE))
2041 if (checkperm && (vap->va_mode & S_ISGID)) {
2042 err = fuse_internal_getattr(vp, &old_va, cred, td);
2045 if (!groupmember(old_va.va_gid, cred)) {
2046 err = priv_check_cred(cred, PRIV_VFS_SETGID);
2054 if (vfs_isrdonly(mp))
2058 err = fuse_internal_access(vp, accmode, td, cred);
2065 return fuse_internal_setattr(vp, vap, td, cred);
2069 struct vnop_strategy_args {
2075 fuse_vnop_strategy(struct vop_strategy_args *ap)
2077 struct vnode *vp = ap->a_vp;
2078 struct buf *bp = ap->a_bp;
2080 if (!vp || fuse_isdeadfs(vp)) {
2081 bp->b_ioflags |= BIO_ERROR;
2082 bp->b_error = ENXIO;
2088 * VOP_STRATEGY always returns zero and signals error via bp->b_ioflags.
2089 * fuse_io_strategy sets bp's error fields
2091 (void)fuse_io_strategy(vp, bp);
2097 struct vnop_symlink_args {
2098 struct vnode *a_dvp;
2099 struct vnode **a_vpp;
2100 struct componentname *a_cnp;
2101 struct vattr *a_vap;
2106 fuse_vnop_symlink(struct vop_symlink_args *ap)
2108 struct vnode *dvp = ap->a_dvp;
2109 struct vnode **vpp = ap->a_vpp;
2110 struct componentname *cnp = ap->a_cnp;
2111 const char *target = ap->a_target;
2113 struct fuse_dispatcher fdi;
2118 if (fuse_isdeadfs(dvp)) {
2122 * Unlike the other creator type calls, here we have to create a message
2123 * where the name of the new entry comes first, and the data describing
2124 * the entry comes second.
2125 * Hence we can't rely on our handy fuse_internal_newentry() routine,
2126 * but put together the message manually and just call the core part.
2129 len = strlen(target) + 1;
2130 fdisp_init(&fdi, len + cnp->cn_namelen + 1);
2131 fdisp_make_vp(&fdi, FUSE_SYMLINK, dvp, curthread, NULL);
2133 memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen);
2134 ((char *)fdi.indata)[cnp->cn_namelen] = '\0';
2135 memcpy((char *)fdi.indata + cnp->cn_namelen + 1, target, len);
2137 err = fuse_internal_newentry_core(dvp, vpp, cnp, VLNK, &fdi);
2138 fdisp_destroy(&fdi);
2143 struct vnop_write_args {
2147 struct ucred *a_cred;
2151 fuse_vnop_write(struct vop_write_args *ap)
2153 struct vnode *vp = ap->a_vp;
2154 struct uio *uio = ap->a_uio;
2155 int ioflag = ap->a_ioflag;
2156 struct ucred *cred = ap->a_cred;
2157 pid_t pid = curthread->td_proc->p_pid;
2159 if (fuse_isdeadfs(vp)) {
2163 if (VTOFUD(vp)->flag & FN_DIRECTIO) {
2164 ioflag |= IO_DIRECT;
2167 return fuse_io_dispatch(vp, uio, ioflag, cred, pid);
2171 fuse_gbp_getblkno(struct vnode *vp, vm_ooffset_t off)
2173 const int biosize = fuse_iosize(vp);
2175 return (off / biosize);
2179 fuse_gbp_getblksz(struct vnode *vp, daddr_t lbn, long *blksz)
2183 const int biosize = fuse_iosize(vp);
2185 err = fuse_vnode_size(vp, &filesize, NULL, NULL);
2187 /* This will turn into a SIGBUS */
2189 } else if ((off_t)lbn * biosize >= filesize) {
2191 } else if ((off_t)(lbn + 1) * biosize > filesize) {
2192 *blksz = filesize - (off_t)lbn *biosize;
2200 struct vnop_getpages_args {
2208 fuse_vnop_getpages(struct vop_getpages_args *ap)
2210 struct vnode *vp = ap->a_vp;
2212 if (!fsess_opt_mmap(vnode_mount(vp))) {
2213 SDT_PROBE2(fusefs, , vnops, trace, 1,
2214 "called on non-cacheable vnode??\n");
2215 return (VM_PAGER_ERROR);
2218 return (vfs_bio_getpages(vp, ap->a_m, ap->a_count, ap->a_rbehind,
2219 ap->a_rahead, fuse_gbp_getblkno, fuse_gbp_getblksz));
2222 static const char extattr_namespace_separator = '.';
2225 struct vop_getextattr_args {
2226 struct vop_generic_args a_gen;
2228 int a_attrnamespace;
2232 struct ucred *a_cred;
2233 struct thread *a_td;
2237 fuse_vnop_getextattr(struct vop_getextattr_args *ap)
2239 struct vnode *vp = ap->a_vp;
2240 struct uio *uio = ap->a_uio;
2241 struct fuse_dispatcher fdi;
2242 struct fuse_getxattr_in *get_xattr_in;
2243 struct fuse_getxattr_out *get_xattr_out;
2244 struct mount *mp = vnode_mount(vp);
2245 struct thread *td = ap->a_td;
2246 struct ucred *cred = ap->a_cred;
2252 if (fuse_isdeadfs(vp))
2255 if (fsess_not_impl(mp, FUSE_GETXATTR))
2258 err = fuse_extattr_check_cred(vp, ap->a_attrnamespace, cred, td, VREAD);
2262 /* Default to looking for user attributes. */
2263 if (ap->a_attrnamespace == EXTATTR_NAMESPACE_SYSTEM)
2264 prefix = EXTATTR_NAMESPACE_SYSTEM_STRING;
2266 prefix = EXTATTR_NAMESPACE_USER_STRING;
2268 len = strlen(prefix) + sizeof(extattr_namespace_separator) +
2269 strlen(ap->a_name) + 1;
2271 fdisp_init(&fdi, len + sizeof(*get_xattr_in));
2272 fdisp_make_vp(&fdi, FUSE_GETXATTR, vp, td, cred);
2274 get_xattr_in = fdi.indata;
2276 * Check to see whether we're querying the available size or
2277 * issuing the actual request. If we pass in 0, we get back struct
2278 * fuse_getxattr_out. If we pass in a non-zero size, we get back
2279 * that much data, without the struct fuse_getxattr_out header.
2282 get_xattr_in->size = 0;
2284 get_xattr_in->size = uio->uio_resid;
2286 attr_str = (char *)fdi.indata + sizeof(*get_xattr_in);
2287 snprintf(attr_str, len, "%s%c%s", prefix, extattr_namespace_separator,
2290 err = fdisp_wait_answ(&fdi);
2292 if (err == ENOSYS) {
2293 fsess_set_notimpl(mp, FUSE_GETXATTR);
2299 get_xattr_out = fdi.answ;
2301 if (ap->a_size != NULL)
2302 *ap->a_size = get_xattr_out->size;
2305 err = uiomove(fdi.answ, fdi.iosize, uio);
2308 fdisp_destroy(&fdi);
2313 struct vop_setextattr_args {
2314 struct vop_generic_args a_gen;
2316 int a_attrnamespace;
2319 struct ucred *a_cred;
2320 struct thread *a_td;
2324 fuse_vnop_setextattr(struct vop_setextattr_args *ap)
2326 struct vnode *vp = ap->a_vp;
2327 struct uio *uio = ap->a_uio;
2328 struct fuse_dispatcher fdi;
2329 struct fuse_setxattr_in *set_xattr_in;
2330 struct mount *mp = vnode_mount(vp);
2331 struct thread *td = ap->a_td;
2332 struct ucred *cred = ap->a_cred;
2338 if (fuse_isdeadfs(vp))
2341 if (fsess_not_impl(mp, FUSE_SETXATTR))
2344 if (vfs_isrdonly(mp))
2347 /* Deleting xattrs must use VOP_DELETEEXTATTR instead */
2348 if (ap->a_uio == NULL) {
2350 * If we got here as fallback from VOP_DELETEEXTATTR, then
2351 * return EOPNOTSUPP.
2353 if (fsess_not_impl(mp, FUSE_REMOVEXATTR))
2354 return (EOPNOTSUPP);
2359 err = fuse_extattr_check_cred(vp, ap->a_attrnamespace, cred, td,
2364 /* Default to looking for user attributes. */
2365 if (ap->a_attrnamespace == EXTATTR_NAMESPACE_SYSTEM)
2366 prefix = EXTATTR_NAMESPACE_SYSTEM_STRING;
2368 prefix = EXTATTR_NAMESPACE_USER_STRING;
2370 len = strlen(prefix) + sizeof(extattr_namespace_separator) +
2371 strlen(ap->a_name) + 1;
2373 fdisp_init(&fdi, len + sizeof(*set_xattr_in) + uio->uio_resid);
2374 fdisp_make_vp(&fdi, FUSE_SETXATTR, vp, td, cred);
2376 set_xattr_in = fdi.indata;
2377 set_xattr_in->size = uio->uio_resid;
2379 attr_str = (char *)fdi.indata + sizeof(*set_xattr_in);
2380 snprintf(attr_str, len, "%s%c%s", prefix, extattr_namespace_separator,
2383 err = uiomove((char *)fdi.indata + sizeof(*set_xattr_in) + len,
2384 uio->uio_resid, uio);
2389 err = fdisp_wait_answ(&fdi);
2391 if (err == ENOSYS) {
2392 fsess_set_notimpl(mp, FUSE_SETXATTR);
2395 if (err == ERESTART) {
2396 /* Can't restart after calling uiomove */
2401 fdisp_destroy(&fdi);
2406 * The Linux / FUSE extended attribute list is simply a collection of
2407 * NUL-terminated strings. The FreeBSD extended attribute list is a single
2408 * byte length followed by a non-NUL terminated string. So, this allows
2409 * conversion of the Linux / FUSE format to the FreeBSD format in place.
2410 * Linux attribute names are reported with the namespace as a prefix (e.g.
2411 * "user.attribute_name"), but in FreeBSD they are reported without the
2412 * namespace prefix (e.g. "attribute_name"). So, we're going from:
2414 * user.attr_name1\0user.attr_name2\0
2418 * <num>attr_name1<num>attr_name2
2420 * Where "<num>" is a single byte number of characters in the attribute name.
2423 * prefix - exattr namespace prefix string
2424 * list, list_len - input list with namespace prefixes
2425 * bsd_list, bsd_list_len - output list compatible with bsd vfs
2428 fuse_xattrlist_convert(char *prefix, const char *list, int list_len,
2429 char *bsd_list, int *bsd_list_len)
2431 int len, pos, dist_to_next, prefix_len;
2435 prefix_len = strlen(prefix);
2437 while (pos < list_len && list[pos] != '\0') {
2438 dist_to_next = strlen(&list[pos]) + 1;
2439 if (bcmp(&list[pos], prefix, prefix_len) == 0 &&
2440 list[pos + prefix_len] == extattr_namespace_separator) {
2441 len = dist_to_next -
2442 (prefix_len + sizeof(extattr_namespace_separator)) - 1;
2443 if (len >= EXTATTR_MAXNAMELEN)
2444 return (ENAMETOOLONG);
2446 bsd_list[*bsd_list_len] = len;
2447 memcpy(&bsd_list[*bsd_list_len + 1],
2448 &list[pos + prefix_len +
2449 sizeof(extattr_namespace_separator)], len);
2451 *bsd_list_len += len + 1;
2454 pos += dist_to_next;
2461 * List extended attributes
2463 * The FUSE_LISTXATTR operation is based on Linux's listxattr(2) syscall, which
2464 * has a number of differences compared to its FreeBSD equivalent,
2465 * extattr_list_file:
2467 * - FUSE_LISTXATTR returns all extended attributes across all namespaces,
2468 * whereas listxattr(2) only returns attributes for a single namespace
2469 * - FUSE_LISTXATTR prepends each attribute name with "namespace."
2470 * - If the provided buffer is not large enough to hold the result,
2471 * FUSE_LISTXATTR should return ERANGE, whereas listxattr is expected to
2472 * return as many results as will fit.
2475 struct vop_listextattr_args {
2476 struct vop_generic_args a_gen;
2478 int a_attrnamespace;
2481 struct ucred *a_cred;
2482 struct thread *a_td;
2486 fuse_vnop_listextattr(struct vop_listextattr_args *ap)
2488 struct vnode *vp = ap->a_vp;
2489 struct uio *uio = ap->a_uio;
2490 struct fuse_dispatcher fdi;
2491 struct fuse_listxattr_in *list_xattr_in;
2492 struct fuse_listxattr_out *list_xattr_out;
2493 struct mount *mp = vnode_mount(vp);
2494 struct thread *td = ap->a_td;
2495 struct ucred *cred = ap->a_cred;
2497 char *bsd_list = NULL;
2503 if (fuse_isdeadfs(vp))
2506 if (fsess_not_impl(mp, FUSE_LISTXATTR))
2509 err = fuse_extattr_check_cred(vp, ap->a_attrnamespace, cred, td, VREAD);
2514 * Add space for a NUL and the period separator if enabled.
2515 * Default to looking for user attributes.
2517 if (ap->a_attrnamespace == EXTATTR_NAMESPACE_SYSTEM)
2518 prefix = EXTATTR_NAMESPACE_SYSTEM_STRING;
2520 prefix = EXTATTR_NAMESPACE_USER_STRING;
2522 fdisp_init(&fdi, sizeof(*list_xattr_in));
2523 fdisp_make_vp(&fdi, FUSE_LISTXATTR, vp, td, cred);
2526 * Retrieve Linux / FUSE compatible list size.
2528 list_xattr_in = fdi.indata;
2529 list_xattr_in->size = 0;
2531 err = fdisp_wait_answ(&fdi);
2533 if (err == ENOSYS) {
2534 fsess_set_notimpl(mp, FUSE_LISTXATTR);
2540 list_xattr_out = fdi.answ;
2541 linux_list_len = list_xattr_out->size;
2542 if (linux_list_len == 0) {
2543 if (ap->a_size != NULL)
2544 *ap->a_size = linux_list_len;
2549 * Retrieve Linux / FUSE compatible list values.
2551 fdisp_refresh_vp(&fdi, FUSE_LISTXATTR, vp, td, cred);
2552 list_xattr_in = fdi.indata;
2553 list_xattr_in->size = linux_list_len;
2555 err = fdisp_wait_answ(&fdi);
2556 if (err == ERANGE) {
2558 * Race detected. The attribute list must've grown since the
2559 * first FUSE_LISTXATTR call. Start over. Go all the way back
2560 * to userland so we can process signals, if necessary, before
2565 } else if (err != 0)
2568 linux_list = fdi.answ;
2569 /* FUSE doesn't allow the server to return more data than requested */
2570 if (fdi.iosize > linux_list_len) {
2571 struct fuse_data *data = fuse_get_mpdata(mp);
2573 fuse_warn(data, FSESS_WARN_LSEXTATTR_LONG,
2575 "more extended attribute data than requested; "
2576 "should've returned ERANGE instead.");
2578 /* But returning less data is fine */
2579 linux_list_len = fdi.iosize;
2583 * Retrieve the BSD compatible list values.
2584 * The Linux / FUSE attribute list format isn't the same
2585 * as FreeBSD's format. So we need to transform it into
2586 * FreeBSD's format before giving it to the user.
2588 bsd_list = malloc(linux_list_len, M_TEMP, M_WAITOK);
2589 err = fuse_xattrlist_convert(prefix, linux_list, linux_list_len,
2590 bsd_list, &bsd_list_len);
2594 if (ap->a_size != NULL)
2595 *ap->a_size = bsd_list_len;
2598 err = uiomove(bsd_list, bsd_list_len, uio);
2601 free(bsd_list, M_TEMP);
2602 fdisp_destroy(&fdi);
2607 struct vop_deleteextattr_args {
2608 struct vop_generic_args a_gen;
2610 int a_attrnamespace;
2612 struct ucred *a_cred;
2613 struct thread *a_td;
2617 fuse_vnop_deleteextattr(struct vop_deleteextattr_args *ap)
2619 struct vnode *vp = ap->a_vp;
2620 struct fuse_dispatcher fdi;
2621 struct mount *mp = vnode_mount(vp);
2622 struct thread *td = ap->a_td;
2623 struct ucred *cred = ap->a_cred;
2629 if (fuse_isdeadfs(vp))
2632 if (fsess_not_impl(mp, FUSE_REMOVEXATTR))
2635 if (vfs_isrdonly(mp))
2638 err = fuse_extattr_check_cred(vp, ap->a_attrnamespace, cred, td,
2643 /* Default to looking for user attributes. */
2644 if (ap->a_attrnamespace == EXTATTR_NAMESPACE_SYSTEM)
2645 prefix = EXTATTR_NAMESPACE_SYSTEM_STRING;
2647 prefix = EXTATTR_NAMESPACE_USER_STRING;
2649 len = strlen(prefix) + sizeof(extattr_namespace_separator) +
2650 strlen(ap->a_name) + 1;
2652 fdisp_init(&fdi, len);
2653 fdisp_make_vp(&fdi, FUSE_REMOVEXATTR, vp, td, cred);
2655 attr_str = fdi.indata;
2656 snprintf(attr_str, len, "%s%c%s", prefix, extattr_namespace_separator,
2659 err = fdisp_wait_answ(&fdi);
2660 if (err == ENOSYS) {
2661 fsess_set_notimpl(mp, FUSE_REMOVEXATTR);
2665 fdisp_destroy(&fdi);
2670 struct vnop_print_args {
2675 fuse_vnop_print(struct vop_print_args *ap)
2677 struct fuse_vnode_data *fvdat = VTOFUD(ap->a_vp);
2679 printf("nodeid: %ju, parent nodeid: %ju, nlookup: %ju, flag: %#x\n",
2680 (uintmax_t)VTOILLU(ap->a_vp), (uintmax_t)fvdat->parent_nid,
2681 (uintmax_t)fvdat->nlookup,
2688 * Get an NFS filehandle for a FUSE file.
2690 * This will only work for FUSE file systems that guarantee the uniqueness of
2691 * nodeid:generation, which most don't.
2695 IN struct vnode *a_vp;
2696 IN struct fid *a_fhp;
2700 fuse_vnop_vptofh(struct vop_vptofh_args *ap)
2702 struct vnode *vp = ap->a_vp;
2703 struct fuse_vnode_data *fvdat = VTOFUD(vp);
2704 struct fuse_fid *fhp = (struct fuse_fid *)(ap->a_fhp);
2705 _Static_assert(sizeof(struct fuse_fid) <= sizeof(struct fid),
2706 "FUSE fid type is too big");
2707 struct mount *mp = vnode_mount(vp);
2708 struct fuse_data *data = fuse_get_mpdata(mp);
2712 if (!(data->dataflags & FSESS_EXPORT_SUPPORT))
2715 err = fuse_internal_getattr(vp, &va, curthread->td_ucred, curthread);
2719 /*ip = VTOI(ap->a_vp);*/
2720 /*ufhp = (struct ufid *)ap->a_fhp;*/
2721 fhp->len = sizeof(struct fuse_fid);
2722 fhp->nid = fvdat->nid;
2723 if (fvdat->generation <= UINT32_MAX)
2724 fhp->gen = fvdat->generation;