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1 /*
2 * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29 /*
30 * Copyright (c) 1992, 1993
31 * The Regents of the University of California. All rights reserved.
32 *
33 * This code is derived from software donated to Berkeley by
34 * Jan-Simon Pendry.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
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.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by the University of
47 * California, Berkeley and its contributors.
48 * 4. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * SUCH DAMAGE.
63 *
64 * @(#)fdesc_vnops.c 8.17 (Berkeley) 5/22/95
65 *
66 */
67
68 /*
69 * /dev/fd Filesystem
70 */
71
72 #include <sys/param.h>
73 #include <sys/systm.h>
74 #include <sys/types.h>
75 #include <sys/time.h>
76 #include <sys/proc_internal.h>
77 #include <sys/kernel.h> /* boottime */
78 #include <sys/resourcevar.h>
79 #include <sys/filedesc.h>
80 #include <sys/kauth.h>
81 #include <sys/vnode_internal.h>
82 #include <sys/malloc.h>
83 #include <sys/file_internal.h>
84 #include <sys/stat.h>
85 #include <sys/mount_internal.h>
86 #include <sys/namei.h>
87 #include <sys/dirent.h>
88 #include <sys/ubc.h>
89 #include <sys/socketvar.h>
90 #include <sys/pipe.h>
91 #include <sys/uio_internal.h>
92 #include <vfs/vfs_support.h>
93 #include <pexpert/pexpert.h>
94 #include <miscfs/devfs/fdesc.h>
95 #include <miscfs/devfs/devfs.h>
96 #include <miscfs/devfs/devfsdefs.h>
97
98 #define FDL_WANT 0x01
99 #define FDL_LOCKED 0x02
100 static int fdcache_lock;
101
102
103 #if (FD_STDIN != FD_STDOUT - 1) || (FD_STDOUT != FD_STDERR - 1)
104 FD_STDIN, FD_STDOUT, FD_STDERR must be a sequence n, n + 1, n + 2
105 #endif
106
107 #define NFDCACHE 3
108
109 #define FD_NHASH(ix) \
110 (&fdhashtbl[(ix) & fdhash])
111 LIST_HEAD(fdhashhead, fdescnode) * fdhashtbl;
112 u_long fdhash;
113
114 static int fdesc_attr(int fd, struct vnode_attr *vap, vfs_context_t a_context);
115
116 static LCK_GRP_DECLARE(fdesc_lckgrp, "fdesc");
117 static LCK_MTX_DECLARE(fdesc_mtx, &fdesc_lckgrp);
118
119 static void
120 fdesc_lock(void)
121 {
122 lck_mtx_lock(&fdesc_mtx);
123 }
124
125 static void
126 fdesc_unlock(void)
127 {
128 lck_mtx_unlock(&fdesc_mtx);
129 }
130
131
132 /*
133 * Initialise cache headers, create the devfs node
134 */
135 int
136 devfs_fdesc_init()
137 {
138 int error = 0;
139 devnode_t *rootdir = dev_root->de_dnp;
140 devdirent_t *direntp;
141
142 /* XXX Make sure you have the right path... */
143 fdhashtbl = hashinit(NFDCACHE, M_CACHE, &fdhash);
144
145 DEVFS_LOCK();
146 dev_add_entry("fd", rootdir, DEV_DEVFD, NULL, NULL, NULL, &direntp);
147 devfs_fdesc_makelinks();
148 DEVFS_UNLOCK();
149
150 return error;
151 }
152
153 /*
154 * Called during early startup, no need to synchronize
155 */
156 int
157 devfs_fdesc_makelinks()
158 {
159 int error = 0;
160 devdirent_t *stdin_ent = NULL, *stdout_ent = NULL, *stderr_ent = NULL;
161 devnode_t *root_devnode = dev_root->de_dnp;
162
163 /* We do this ugliness to get around some "const" warnings */
164 char in[] = "stdin";
165 char out[] = "stdout";
166 char err[] = "stderr";
167 char zero[] = "fd/0";
168 char one[] = "fd/1";
169 char two[] = "fd/2";
170
171 if ((error = devfs_make_symlink(root_devnode, in, 0555, zero, &stdin_ent))) {
172 printf("Couldn't make stdin, err %d.\n", error);
173 goto bad;
174 }
175
176 if ((error = devfs_make_symlink(root_devnode, out, 0555, one, &stdout_ent))) {
177 printf("Couldn't make stdout, err %d.\n", error);
178 goto bad;
179 }
180
181 if ((error = devfs_make_symlink(root_devnode, err, 0555, two, &stderr_ent))) {
182 printf("Couldn't make stderr, err %d.\n", error);
183 goto bad;
184 }
185
186 return 0;
187
188 bad:
189 if (stdin_ent) {
190 dev_free_name(stdin_ent);
191 }
192 if (stdout_ent) {
193 dev_free_name(stdout_ent);
194 }
195 if (stderr_ent) {
196 dev_free_name(stderr_ent);
197 }
198
199 return error;
200 }
201
202 int
203 fdesc_allocvp(fdntype ftype, int ix, struct mount *mp, struct vnode **vpp, enum vtype vtype, int fdno)
204 {
205 struct fdhashhead *fc;
206 struct fdescnode *fd;
207 int error = 0;
208 int vid = 0;
209 struct vnode_fsparam vfsp;
210
211 fdesc_lock();
212
213 fc = FD_NHASH(ix);
214 loop:
215 for (fd = fc->lh_first; fd != 0; fd = fd->fd_hash.le_next) {
216 if (fd->fd_ix == ix && vnode_mount(fd->fd_vnode) == mp) {
217 vid = vnode_vid(fd->fd_vnode);
218 fdesc_unlock();
219
220 if (vnode_getwithvid(fd->fd_vnode, vid)) {
221 fdesc_lock();
222 goto loop;
223 }
224
225 *vpp = fd->fd_vnode;
226 (*vpp)->v_type = (uint16_t)vtype;
227
228 return error;
229 }
230 }
231
232 /* Only one thread can add to the hash at a time */
233 if (fdcache_lock & FDL_LOCKED) {
234 fdcache_lock |= FDL_WANT;
235 msleep((caddr_t) &fdcache_lock, &fdesc_mtx, PINOD, "fdesc_allocvp", NULL);
236 goto loop;
237 }
238
239 fdcache_lock |= FDL_LOCKED;
240 fdesc_unlock();
241
242 MALLOC(fd, void *, sizeof(struct fdescnode), M_TEMP, M_WAITOK);
243
244 vfsp.vnfs_mp = mp;
245 vfsp.vnfs_vtype = vtype;
246 vfsp.vnfs_str = "fdesc";
247 vfsp.vnfs_dvp = NULL;
248 vfsp.vnfs_fsnode = fd;
249 vfsp.vnfs_cnp = NULL;
250 vfsp.vnfs_vops = fdesc_vnodeop_p;
251 vfsp.vnfs_rdev = 0;
252 vfsp.vnfs_filesize = 0;
253 vfsp.vnfs_flags = VNFS_NOCACHE | VNFS_CANTCACHE;
254 vfsp.vnfs_marksystem = 0;
255 vfsp.vnfs_markroot = 0;
256
257 error = vnode_create(VNCREATE_FLAVOR, VCREATESIZE, &vfsp, vpp);
258 if (error) {
259 FREE(fd, M_TEMP);
260 fdesc_lock();
261 goto out;
262 }
263
264 (*vpp)->v_tag = VT_FDESC;
265 fd->fd_vnode = *vpp;
266 fd->fd_type = ftype;
267 fd->fd_fd = -1;
268 fd->fd_link = NULL;
269 fd->fd_ix = ix;
270 fd->fd_fd = fdno;
271
272 fdesc_lock();
273
274 LIST_INSERT_HEAD(fc, fd, fd_hash);
275 out:
276 /* Hold the lock when we get here */
277 fdcache_lock &= ~FDL_LOCKED;
278
279 if (fdcache_lock & FDL_WANT) {
280 fdcache_lock &= ~FDL_WANT;
281 wakeup((caddr_t) &fdcache_lock);
282 }
283
284 fdesc_unlock();
285
286 return error;
287 }
288
289 /*
290 * vp is the current namei directory
291 * ndp is the name to locate in that directory...
292 *
293 * This vnop should only be called on the special directory /dev/fd.
294 */
295 int
296 devfs_devfd_lookup(struct vnop_lookup_args *ap)
297 {
298 struct vnode **vpp = ap->a_vpp;
299 struct vnode *dvp = ap->a_dvp;
300 struct componentname *cnp = ap->a_cnp;
301 char *pname = cnp->cn_nameptr;
302 struct proc *p = vfs_context_proc(ap->a_context);
303 int numfiles = p->p_fd->fd_nfiles;
304 int fd;
305 int error;
306 struct vnode *fvp;
307
308 if (cnp->cn_namelen == 1 && *pname == '.') {
309 *vpp = dvp;
310
311 if ((error = vnode_get(dvp))) {
312 goto bad;
313 }
314 return 0;
315 }
316
317 fd = 0;
318 while (*pname >= '0' && *pname <= '9') {
319 fd = 10 * fd + *pname++ - '0';
320 if (fd >= numfiles) {
321 break;
322 }
323 }
324
325 if (*pname != '\0') {
326 error = ENOENT;
327 goto bad;
328 }
329
330 if (fd < 0 || fd >= numfiles ||
331 *fdfile(p, fd) == NULL ||
332 (*fdflags(p, fd) & UF_RESERVED)) {
333 error = EBADF;
334 goto bad;
335 }
336
337 error = fdesc_allocvp(Fdesc, FD_DESC + fd, dvp->v_mount, &fvp, VNON, fd);
338 if (error) {
339 goto bad;
340 }
341 *vpp = fvp;
342 return 0;
343
344 bad:
345 *vpp = NULL;
346 return error;
347 }
348
349 int
350 fdesc_open(struct vnop_open_args *ap)
351 {
352 struct vnode *vp = ap->a_vp;
353 thread_t thr = vfs_context_thread(ap->a_context);
354 uthread_t uu;
355 int error = 0;
356
357 if (thr == NULL) {
358 return EINVAL;
359 }
360
361 uu = get_bsdthread_info(thr);
362
363 switch (VTOFDESC(vp)->fd_type) {
364 case Fdesc:
365 /*
366 * XXX Kludge: set uu->uu_dupfd to contain the value of the
367 * the file descriptor being sought for duplication. The error
368 * return ensures that the vnode for this device will be
369 * released by vn_open. Open will detect this special error and
370 * take the actions in dupfdopen. Other callers of vn_open or
371 * vnop_open will simply report the error.
372 */
373 uu->uu_dupfd = VTOFDESC(vp)->fd_fd; /* XXX */
374 error = ENODEV;
375 break;
376 default:
377 panic("Invalid type for fdesc node!");
378 break;
379 }
380
381 return error;
382 }
383
384 static int
385 fdesc_attr(int fd, struct vnode_attr *vap, vfs_context_t a_context)
386 {
387 struct fileproc *fp;
388 struct proc *p = vfs_context_proc(a_context);
389 struct stat stb;
390 int error;
391
392 if ((error = fp_lookup(p, fd, &fp, 0))) {
393 return error;
394 }
395 switch (FILEGLOB_DTYPE(fp->fp_glob)) {
396 case DTYPE_VNODE:
397 if ((error = vnode_getwithref((struct vnode *) fp->fp_glob->fg_data)) != 0) {
398 break;
399 }
400 if ((error = vnode_authorize((struct vnode *)fp->fp_glob->fg_data,
401 NULL,
402 KAUTH_VNODE_READ_ATTRIBUTES | KAUTH_VNODE_READ_SECURITY,
403 a_context)) == 0) {
404 error = vnode_getattr((struct vnode *)fp->fp_glob->fg_data, vap, a_context);
405 }
406 if (error == 0 && vap->va_type == VDIR) {
407 /*
408 * directories can cause loops in the namespace,
409 * so turn off the 'x' bits to avoid trouble.
410 *
411 * XXX ACLs break this, of course
412 */
413 vap->va_mode &= ~((VEXEC) | (VEXEC >> 3) | (VEXEC >> 6));
414 }
415 (void)vnode_put((struct vnode *) fp->fp_glob->fg_data);
416 break;
417
418 case DTYPE_SOCKET:
419 case DTYPE_PIPE:
420 #if SOCKETS
421 if (FILEGLOB_DTYPE(fp->fp_glob) == DTYPE_SOCKET) {
422 error = soo_stat((struct socket *)fp->fp_glob->fg_data, (void *)&stb, 0);
423 } else
424 #endif /* SOCKETS */
425 error = pipe_stat((struct pipe *)fp->fp_glob->fg_data, (void *)&stb, 0);
426
427 if (error == 0) {
428 if (FILEGLOB_DTYPE(fp->fp_glob) == DTYPE_SOCKET) {
429 VATTR_RETURN(vap, va_type, VSOCK);
430 } else {
431 VATTR_RETURN(vap, va_type, VFIFO);
432 }
433
434 VATTR_RETURN(vap, va_mode, stb.st_mode);
435 VATTR_RETURN(vap, va_nlink, stb.st_nlink);
436 VATTR_RETURN(vap, va_uid, stb.st_uid);
437 VATTR_RETURN(vap, va_gid, stb.st_gid);
438 VATTR_RETURN(vap, va_fsid, stb.st_dev);
439 VATTR_RETURN(vap, va_fileid, stb.st_ino);
440 VATTR_RETURN(vap, va_data_size, stb.st_size);
441 VATTR_RETURN(vap, va_access_time, stb.st_atimespec);
442 VATTR_RETURN(vap, va_modify_time, stb.st_mtimespec);
443 VATTR_RETURN(vap, va_change_time, stb.st_ctimespec);
444 VATTR_RETURN(vap, va_gen, stb.st_gen);
445 VATTR_RETURN(vap, va_flags, stb.st_flags);
446 VATTR_RETURN(vap, va_rdev, stb.st_rdev);
447 VATTR_RETURN(vap, va_total_alloc, stb.st_blocks * stb.st_blksize);
448 VATTR_RETURN(vap, va_acl, NULL);
449 }
450 break;
451
452 default:
453 error = EBADF;
454 }
455
456 fp_drop(p, fd, fp, 0);
457 return error;
458 }
459
460 int
461 fdesc_getattr(struct vnop_getattr_args *ap)
462 {
463 struct vnode *vp = ap->a_vp;
464 struct vnode_attr *vap = ap->a_vap;
465 unsigned fd;
466 int error = 0;
467
468 switch (VTOFDESC(vp)->fd_type) {
469 case Fdesc:
470 fd = VTOFDESC(vp)->fd_fd;
471 error = fdesc_attr(fd, vap, ap->a_context);
472 break;
473
474 default:
475 panic("Invalid type for an fdesc node!\n");
476 break;
477 }
478
479 /*
480 * Yes, we do this without locking, but this value is always just
481 * a snapshot.
482 */
483 if (error == 0) {
484 vp->v_type = (uint16_t)vap->va_type;
485
486 /* We need an inactive to reset type to VNON */
487 vnode_setneedinactive(vp);
488 }
489
490 return error;
491 }
492
493 int
494 fdesc_setattr(struct vnop_setattr_args *ap)
495 {
496 struct fileproc *fp;
497 unsigned fd;
498 int error;
499 struct proc * p = vfs_context_proc(ap->a_context);
500
501 /*
502 * Can't mess with the root vnode
503 */
504 switch (VTOFDESC(ap->a_vp)->fd_type) {
505 case Fdesc:
506 break;
507 default:
508 panic("Invalid type for an fdesc node!\n");
509 return EACCES;
510 }
511
512 fd = VTOFDESC(ap->a_vp)->fd_fd;
513 if ((error = fp_lookup(vfs_context_proc(ap->a_context), fd, &fp, 0))) {
514 return error;
515 }
516
517 /*
518 * Can setattr the underlying vnode, but not sockets!
519 */
520 switch (FILEGLOB_DTYPE(fp->fp_glob)) {
521 case DTYPE_VNODE:
522 {
523 if ((error = vnode_getwithref((struct vnode *) fp->fp_glob->fg_data)) != 0) {
524 break;
525 }
526 error = vnode_setattr((struct vnode *) fp->fp_glob->fg_data, ap->a_vap, ap->a_context);
527 (void)vnode_put((struct vnode *) fp->fp_glob->fg_data);
528 break;
529 }
530
531 case DTYPE_SOCKET:
532 case DTYPE_PIPE:
533 error = 0;
534 break;
535
536 default:
537 error = EBADF;
538 break;
539 }
540
541 fp_drop(p, fd, fp, 0);
542 return error;
543 }
544
545 #define UIO_MX 16
546
547 /*
548 * static struct dirtmp {
549 * u_int32_t d_fileno;
550 * u_short d_reclen;
551 * u_short d_namlen;
552 * char d_name[8];
553 * } rootent[] = {
554 * { FD_DEVFD, UIO_MX, 2, "fd" },
555 * { FD_STDIN, UIO_MX, 5, "stdin" },
556 * { FD_STDOUT, UIO_MX, 6, "stdout" },
557 * { FD_STDERR, UIO_MX, 6, "stderr" },
558 * { 0, 0, 0, "" }
559 * };
560 */
561
562 /* Only called on /dev/fd */
563 int
564 devfs_devfd_readdir(struct vnop_readdir_args *ap)
565 {
566 struct uio *uio = ap->a_uio;
567 struct proc *p = current_proc();
568 off_t i;
569 int error;
570
571 /*
572 * We don't allow exporting fdesc mounts, and currently local
573 * requests do not need cookies.
574 */
575 if (ap->a_flags & (VNODE_READDIR_EXTENDED | VNODE_READDIR_REQSEEKOFF)) {
576 return EINVAL;
577 }
578
579 /*
580 * There needs to be space for at least one entry.
581 */
582 if (uio_resid(uio) < UIO_MX) {
583 return EINVAL;
584 }
585
586 i = uio->uio_offset / UIO_MX;
587 error = 0;
588 while (uio_resid(uio) >= UIO_MX) {
589 if (i >= p->p_fd->fd_nfiles || i < 0) {
590 break;
591 }
592
593 if (*fdfile(p, i) != NULL && !(*fdflags(p, i) & UF_RESERVED)) {
594 struct dirent d;
595 struct dirent *dp = &d;
596
597 bzero((caddr_t) dp, UIO_MX);
598
599 dp->d_namlen = (__uint8_t)scnprintf(dp->d_name, sizeof(dp->d_name),
600 "%lld", i);
601 dp->d_reclen = UIO_MX;
602 dp->d_type = DT_UNKNOWN;
603 dp->d_fileno = (ino_t)i + FD_STDIN;
604 /*
605 * And ship to userland
606 */
607 error = uiomove((caddr_t) dp, UIO_MX, uio);
608 if (error) {
609 break;
610 }
611 }
612 i++;
613 }
614
615 uio->uio_offset = i * UIO_MX;
616 return error;
617 }
618
619 int
620 fdesc_read(__unused struct vnop_read_args *ap)
621 {
622 return ENOTSUP;
623 }
624
625 int
626 fdesc_write(__unused struct vnop_write_args *ap)
627 {
628 return ENOTSUP;
629 }
630
631 int
632 fdesc_ioctl(__unused struct vnop_ioctl_args *ap)
633 {
634 return ENOTSUP;
635 }
636
637 int
638 fdesc_select(__unused struct vnop_select_args *ap)
639 {
640 return ENOTSUP;
641 }
642
643 int
644 fdesc_inactive(struct vnop_inactive_args *ap)
645 {
646 struct vnode *vp = ap->a_vp;
647
648 /*
649 * Clear out the v_type field to avoid
650 * nasty things happening in vgone().
651 */
652 vp->v_type = VNON;
653
654 return 0;
655 }
656
657 int
658 fdesc_reclaim(struct vnop_reclaim_args *ap)
659 {
660 struct vnode *vp = ap->a_vp;
661 struct fdescnode *fd = VTOFDESC(vp);
662
663 fdesc_lock();
664
665 LIST_REMOVE(fd, fd_hash);
666 FREE(vp->v_data, M_TEMP);
667 vp->v_data = NULL;
668
669 fdesc_unlock();
670
671 return 0;
672 }
673
674 /*
675 * Return POSIX pathconf information applicable to special devices.
676 */
677 int
678 fdesc_pathconf(struct vnop_pathconf_args *ap)
679 {
680 switch (ap->a_name) {
681 case _PC_LINK_MAX:
682 *ap->a_retval = LINK_MAX;
683 return 0;
684 case _PC_MAX_CANON:
685 *ap->a_retval = MAX_CANON;
686 return 0;
687 case _PC_MAX_INPUT:
688 *ap->a_retval = MAX_INPUT;
689 return 0;
690 case _PC_PIPE_BUF:
691 *ap->a_retval = PIPE_BUF;
692 return 0;
693 case _PC_CHOWN_RESTRICTED:
694 *ap->a_retval = 200112; /* _POSIX_CHOWN_RESTRICTED */
695 return 0;
696 case _PC_VDISABLE:
697 *ap->a_retval = _POSIX_VDISABLE;
698 return 0;
699 default:
700 return EINVAL;
701 }
702 /* NOTREACHED */
703 }
704
705 /*
706 * /dev/fd "should never get here" operation
707 */
708 int
709 fdesc_badop(void)
710 {
711 return ENOTSUP;
712 /* NOTREACHED */
713 }
714
715 #define VOPFUNC int (*)(void *)
716
717 #define fdesc_create (int (*) (struct vnop_create_args *))eopnotsupp
718 #define fdesc_mknod (int (*) (struct vnop_mknod_args *))eopnotsupp
719 #define fdesc_close (int (*) (struct vnop_close_args *))nullop
720 #define fdesc_access (int (*) (struct vnop_access_args *))nullop
721 #define fdesc_mmap (int (*) (struct vnop_mmap_args *))eopnotsupp
722 #define fdesc_revoke nop_revoke
723 #define fdesc_fsync (int (*) (struct vnop_fsync_args *))nullop
724 #define fdesc_remove (int (*) (struct vnop_remove_args *))eopnotsupp
725 #define fdesc_link (int (*) (struct vnop_link_args *))eopnotsupp
726 #define fdesc_rename (int (*) (struct vnop_rename_args *))eopnotsupp
727 #define fdesc_mkdir (int (*) (struct vnop_mkdir_args *))eopnotsupp
728 #define fdesc_rmdir (int (*) (struct vnop_rmdir_args *))eopnotsupp
729 #define fdesc_symlink (int (*) (struct vnop_symlink_args *))eopnotsupp
730 #define fdesc_strategy (int (*) (struct vnop_strategy_args *))fdesc_badop
731 #define fdesc_advlock (int (*) (struct vnop_advlock_args *))eopnotsupp
732 #define fdesc_bwrite (int (*) (struct vnop_bwrite_args *))eopnotsupp
733 #define fdesc_blktooff (int (*) (struct vnop_blktooff_args *))eopnotsupp
734 #define fdesc_offtoblk (int (*) (struct vnop_offtoblk_args *))eopnotsupp
735 #define fdesc_blockmap (int (*) (struct vnop_blockmap_args *))eopnotsupp
736
737 int(**fdesc_vnodeop_p)(void *);
738 const struct vnodeopv_entry_desc devfs_fdesc_vnodeop_entries[] = {
739 { .opve_op = &vnop_default_desc, .opve_impl = (VOPFUNC)vn_default_error },
740 { .opve_op = &vnop_lookup_desc, .opve_impl = (VOPFUNC)vn_default_error}, /* lookup */
741 { .opve_op = &vnop_create_desc, .opve_impl = (VOPFUNC)fdesc_create }, /* create */
742 { .opve_op = &vnop_mknod_desc, .opve_impl = (VOPFUNC)fdesc_mknod }, /* mknod */
743 { .opve_op = &vnop_open_desc, .opve_impl = (VOPFUNC)fdesc_open }, /* open */
744 { .opve_op = &vnop_close_desc, .opve_impl = (VOPFUNC)fdesc_close }, /* close */
745 { .opve_op = &vnop_access_desc, .opve_impl = (VOPFUNC)fdesc_access }, /* access */
746 { .opve_op = &vnop_getattr_desc, .opve_impl = (VOPFUNC)fdesc_getattr }, /* getattr */
747 { .opve_op = &vnop_setattr_desc, .opve_impl = (VOPFUNC)fdesc_setattr }, /* setattr */
748 { .opve_op = &vnop_read_desc, .opve_impl = (VOPFUNC)fdesc_read }, /* read */
749 { .opve_op = &vnop_write_desc, .opve_impl = (VOPFUNC)fdesc_write }, /* write */
750 { .opve_op = &vnop_ioctl_desc, .opve_impl = (VOPFUNC)fdesc_ioctl }, /* ioctl */
751 { .opve_op = &vnop_select_desc, .opve_impl = (VOPFUNC)fdesc_select }, /* select */
752 { .opve_op = &vnop_revoke_desc, .opve_impl = (VOPFUNC)fdesc_revoke }, /* revoke */
753 { .opve_op = &vnop_mmap_desc, .opve_impl = (VOPFUNC)fdesc_mmap }, /* mmap */
754 { .opve_op = &vnop_fsync_desc, .opve_impl = (VOPFUNC)fdesc_fsync }, /* fsync */
755 { .opve_op = &vnop_remove_desc, .opve_impl = (VOPFUNC)fdesc_remove }, /* remove */
756 { .opve_op = &vnop_link_desc, .opve_impl = (VOPFUNC)fdesc_link }, /* link */
757 { .opve_op = &vnop_rename_desc, .opve_impl = (VOPFUNC)fdesc_rename }, /* rename */
758 { .opve_op = &vnop_mkdir_desc, .opve_impl = (VOPFUNC)fdesc_mkdir }, /* mkdir */
759 { .opve_op = &vnop_rmdir_desc, .opve_impl = (VOPFUNC)fdesc_rmdir }, /* rmdir */
760 { .opve_op = &vnop_symlink_desc, .opve_impl = (VOPFUNC)fdesc_symlink }, /* symlink */
761 { .opve_op = &vnop_readdir_desc, .opve_impl = (VOPFUNC)vn_default_error},/* readdir */
762 { .opve_op = &vnop_readlink_desc, .opve_impl = (VOPFUNC)err_readlink}, /* readlink */
763 { .opve_op = &vnop_inactive_desc, .opve_impl = (VOPFUNC)fdesc_inactive },/* inactive */
764 { .opve_op = &vnop_reclaim_desc, .opve_impl = (VOPFUNC)fdesc_reclaim }, /* reclaim */
765 { .opve_op = &vnop_strategy_desc, .opve_impl = (VOPFUNC)fdesc_strategy }, /* strategy */
766 { .opve_op = &vnop_pathconf_desc, .opve_impl = (VOPFUNC)fdesc_pathconf }, /* pathconf */
767 { .opve_op = &vnop_advlock_desc, .opve_impl = (VOPFUNC)fdesc_advlock }, /* advlock */
768 { .opve_op = &vnop_bwrite_desc, .opve_impl = (VOPFUNC)fdesc_bwrite }, /* bwrite */
769 { .opve_op = &vnop_pagein_desc, .opve_impl = (VOPFUNC)err_pagein }, /* pagein */
770 { .opve_op = &vnop_pageout_desc, .opve_impl = (VOPFUNC)err_pageout }, /* pageout */
771 { .opve_op = &vnop_copyfile_desc, .opve_impl = (VOPFUNC)err_copyfile }, /* Copyfile */
772 { .opve_op = &vnop_blktooff_desc, .opve_impl = (VOPFUNC)fdesc_blktooff }, /* blktooff */
773 { .opve_op = &vnop_blktooff_desc, .opve_impl = (VOPFUNC)fdesc_offtoblk }, /* offtoblk */
774 { .opve_op = &vnop_blockmap_desc, .opve_impl = (VOPFUNC)fdesc_blockmap }, /* blockmap */
775 { .opve_op = (struct vnodeop_desc*)NULL, .opve_impl = (VOPFUNC)NULL }
776 };
777
778 const struct vnodeopv_desc devfs_fdesc_vnodeop_opv_desc =
779 { .opv_desc_vector_p = &fdesc_vnodeop_p, .opv_desc_ops = devfs_fdesc_vnodeop_entries };