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38 * @(#)vfs_vnops.c 8.2 (Berkeley) 1/21/94
39 * $FreeBSD: src/sys/kern/vfs_vnops.c,v 1.87.2.13 2002/12/29 18:19:53 dillon Exp $
40 * $DragonFly: src/sys/kern/vfs_vnops.c,v 1.58 2008/06/28 17:59:49 dillon Exp $
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/fcntl.h>
50 #include <sys/mount.h>
51 #include <sys/nlookup.h>
52 #include <sys/vnode.h>
54 #include <sys/filio.h>
55 #include <sys/ttycom.h>
57 #include <sys/syslog.h>
59 static int vn_closefile (struct file *fp);
60 static int vn_ioctl (struct file *fp, u_long com, caddr_t data,
62 static int vn_read (struct file *fp, struct uio *uio,
63 struct ucred *cred, int flags);
64 static int svn_read (struct file *fp, struct uio *uio,
65 struct ucred *cred, int flags);
66 static int vn_poll (struct file *fp, int events, struct ucred *cred);
67 static int vn_kqfilter (struct file *fp, struct knote *kn);
68 static int vn_statfile (struct file *fp, struct stat *sb, struct ucred *cred);
69 static int vn_write (struct file *fp, struct uio *uio,
70 struct ucred *cred, int flags);
71 static int svn_write (struct file *fp, struct uio *uio,
72 struct ucred *cred, int flags);
74 struct fileops vnode_fileops = {
79 .fo_kqfilter = vn_kqfilter,
80 .fo_stat = vn_statfile,
81 .fo_close = vn_closefile,
82 .fo_shutdown = nofo_shutdown
85 struct fileops specvnode_fileops = {
87 .fo_write = svn_write,
90 .fo_kqfilter = vn_kqfilter,
91 .fo_stat = vn_statfile,
92 .fo_close = vn_closefile,
93 .fo_shutdown = nofo_shutdown
97 * Shortcut the device read/write. This avoids a lot of vnode junk.
98 * Basically the specfs vnops for read and write take the locked vnode,
99 * unlock it (because we can't hold the vnode locked while reading or writing
100 * a device which may block indefinitely), issues the device operation, then
101 * relock the vnode before returning, plus other junk. This bypasses all
102 * of that and just does the device operation.
105 vn_setspecops(struct file *fp)
107 if (vfs_fastdev && fp->f_ops == &vnode_fileops) {
108 fp->f_ops = &specvnode_fileops;
113 * Common code for vnode open operations. Check permissions, and call
114 * the VOP_NOPEN or VOP_NCREATE routine.
116 * The caller is responsible for setting up nd with nlookup_init() and
117 * for cleaning it up with nlookup_done(), whether we return an error
120 * On success nd->nl_open_vp will hold a referenced and, if requested,
121 * locked vnode. A locked vnode is requested via NLC_LOCKVP. If fp
122 * is non-NULL the vnode will be installed in the file pointer.
124 * NOTE: The vnode is referenced just once on return whether or not it
125 * is also installed in the file pointer.
128 vn_open(struct nlookupdata *nd, struct file *fp, int fmode, int cmode)
131 struct ucred *cred = nd->nl_cred;
133 struct vattr *vap = &vat;
137 * Certain combinations are illegal
139 if ((fmode & (FWRITE | O_TRUNC)) == O_TRUNC)
143 * Lookup the path and create or obtain the vnode. After a
144 * successful lookup a locked nd->nl_nch will be returned.
146 * The result of this section should be a locked vnode.
148 * XXX with only a little work we should be able to avoid locking
149 * the vnode if FWRITE, O_CREAT, and O_TRUNC are *not* set.
151 nd->nl_flags |= NLC_OPEN;
152 if (fmode & O_APPEND)
153 nd->nl_flags |= NLC_APPEND;
155 nd->nl_flags |= NLC_TRUNCATE;
157 nd->nl_flags |= NLC_READ;
159 nd->nl_flags |= NLC_WRITE;
160 if ((fmode & O_EXCL) == 0 && (fmode & O_NOFOLLOW) == 0)
161 nd->nl_flags |= NLC_FOLLOW;
163 if (fmode & O_CREAT) {
165 * CONDITIONAL CREATE FILE CASE
167 * Setting NLC_CREATE causes a negative hit to store
168 * the negative hit ncp and not return an error. Then
169 * nc_error or nc_vp may be checked to see if the ncp
170 * represents a negative hit. NLC_CREATE also requires
171 * write permission on the governing directory or EPERM
174 nd->nl_flags |= NLC_CREATE;
175 nd->nl_flags |= NLC_REFDVP;
180 * NORMAL OPEN FILE CASE
189 * split case to allow us to re-resolve and retry the ncp in case
193 if (fmode & O_CREAT) {
194 if (nd->nl_nch.ncp->nc_vp == NULL) {
195 if ((error = ncp_writechk(&nd->nl_nch)) != 0)
199 vap->va_mode = cmode;
201 vap->va_vaflags |= VA_EXCLUSIVE;
202 error = VOP_NCREATE(&nd->nl_nch, nd->nl_dvp, &vp,
207 /* locked vnode is returned */
209 if (fmode & O_EXCL) {
212 error = cache_vget(&nd->nl_nch, cred,
220 error = cache_vget(&nd->nl_nch, cred, LK_EXCLUSIVE, &vp);
226 * We have a locked vnode and ncp now. Note that the ncp will
227 * be cleaned up by the caller if nd->nl_nch is left intact.
229 if (vp->v_type == VLNK) {
233 if (vp->v_type == VSOCK) {
237 if ((fmode & O_CREAT) == 0) {
238 if (fmode & (FWRITE | O_TRUNC)) {
239 if (vp->v_type == VDIR) {
243 error = vn_writechk(vp, &nd->nl_nch);
246 * Special stale handling, re-resolve the
249 if (error == ESTALE) {
252 cache_setunresolved(&nd->nl_nch);
253 error = cache_resolve(&nd->nl_nch, cred);
261 if (fmode & O_TRUNC) {
262 vn_unlock(vp); /* XXX */
263 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); /* XXX */
266 error = VOP_SETATTR(vp, vap, cred);
272 * Setup the fp so VOP_OPEN can override it. No descriptor has been
273 * associated with the fp yet so we own it clean.
275 * f_nchandle inherits nl_nch. This used to be necessary only for
276 * directories but now we do it unconditionally so f*() ops
277 * such as fchmod() can access the actual namespace that was
278 * used to open the file.
281 if (nd->nl_flags & NLC_APPENDONLY)
282 fmode |= FAPPENDONLY;
283 fp->f_nchandle = nd->nl_nch;
284 cache_zero(&nd->nl_nch);
285 cache_unlock(&fp->f_nchandle);
289 * Get rid of nl_nch. vn_open does not return it (it returns the
290 * vnode or the file pointer). Note: we can't leave nl_nch locked
291 * through the VOP_OPEN anyway since the VOP_OPEN may block, e.g.
295 cache_put(&nd->nl_nch);
297 error = VOP_OPEN(vp, fmode, cred, fp);
300 * setting f_ops to &badfileops will prevent the descriptor
301 * code from trying to close and release the vnode, since
302 * the open failed we do not want to call close.
306 fp->f_ops = &badfileops;
313 * Assert that VREG files have been setup for vmio.
315 KASSERT(vp->v_type != VREG || vp->v_object != NULL,
316 ("vn_open: regular file was not VMIO enabled!"));
320 * Return the vnode. XXX needs some cleaning up. The vnode is
321 * only returned in the fp == NULL case.
325 nd->nl_vp_fmode = fmode;
326 if ((nd->nl_flags & NLC_LOCKVP) == 0)
339 vn_opendisk(const char *devname, int fmode, struct vnode **vpp)
344 if (strncmp(devname, "/dev/", 5) == 0)
346 if ((vp = getsynthvnode(devname)) == NULL) {
349 error = VOP_OPEN(vp, fmode, proc0.p_ucred, NULL);
361 * Check for write permissions on the specified vnode. nch may be NULL.
364 vn_writechk(struct vnode *vp, struct nchandle *nch)
367 * If there's shared text associated with
368 * the vnode, try to free it up once. If
369 * we fail, we can't allow writing.
371 if (vp->v_flag & VTEXT)
375 * If the vnode represents a regular file, check the mount
376 * point via the nch. This may be a different mount point
377 * then the one embedded in the vnode (e.g. nullfs).
379 * We can still write to non-regular files (e.g. devices)
380 * via read-only mounts.
382 if (nch && nch->ncp && vp->v_type == VREG)
383 return (ncp_writechk(nch));
388 * Check whether the underlying mount is read-only. The mount point
389 * referenced by the namecache may be different from the mount point
390 * used by the underlying vnode in the case of NULLFS, so a separate
394 ncp_writechk(struct nchandle *nch)
396 if (nch->mount && (nch->mount->mnt_flag & MNT_RDONLY))
405 vn_close(struct vnode *vp, int flags)
409 error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
411 error = VOP_CLOSE(vp, flags);
420 sequential_heuristic(struct uio *uio, struct file *fp)
423 * Sequential heuristic - detect sequential operation
425 if ((uio->uio_offset == 0 && fp->f_seqcount > 0) ||
426 uio->uio_offset == fp->f_nextoff) {
427 int tmpseq = fp->f_seqcount;
429 * XXX we assume that the filesystem block size is
430 * the default. Not true, but still gives us a pretty
431 * good indicator of how sequential the read operations
434 tmpseq += (uio->uio_resid + BKVASIZE - 1) / BKVASIZE;
435 if (tmpseq > IO_SEQMAX)
437 fp->f_seqcount = tmpseq;
438 return(fp->f_seqcount << IO_SEQSHIFT);
442 * Not sequential, quick draw-down of seqcount
444 if (fp->f_seqcount > 1)
452 * Package up an I/O request on a vnode into a uio and do it.
455 vn_rdwr(enum uio_rw rw, struct vnode *vp, caddr_t base, int len,
456 off_t offset, enum uio_seg segflg, int ioflg,
457 struct ucred *cred, int *aresid)
461 struct ccms_lock ccms_lock;
464 if ((ioflg & IO_NODELOCKED) == 0)
465 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
466 auio.uio_iov = &aiov;
468 aiov.iov_base = base;
470 auio.uio_resid = len;
471 auio.uio_offset = offset;
472 auio.uio_segflg = segflg;
474 auio.uio_td = curthread;
475 ccms_lock_get_uio(&vp->v_ccms, &ccms_lock, &auio);
476 if (rw == UIO_READ) {
477 error = VOP_READ(vp, &auio, ioflg, cred);
479 error = VOP_WRITE(vp, &auio, ioflg, cred);
481 ccms_lock_put(&vp->v_ccms, &ccms_lock);
483 *aresid = auio.uio_resid;
485 if (auio.uio_resid && error == 0)
487 if ((ioflg & IO_NODELOCKED) == 0)
493 * Package up an I/O request on a vnode into a uio and do it. The I/O
494 * request is split up into smaller chunks and we try to avoid saturating
495 * the buffer cache while potentially holding a vnode locked, so we
496 * check bwillwrite() before calling vn_rdwr(). We also call uio_yield()
497 * to give other processes a chance to lock the vnode (either other processes
498 * core'ing the same binary, or unrelated processes scanning the directory).
501 vn_rdwr_inchunks(enum uio_rw rw, struct vnode *vp, caddr_t base, int len,
502 off_t offset, enum uio_seg segflg, int ioflg,
503 struct ucred *cred, int *aresid)
511 * Force `offset' to a multiple of MAXBSIZE except possibly
512 * for the first chunk, so that filesystems only need to
513 * write full blocks except possibly for the first and last
516 chunk = MAXBSIZE - (uoff_t)offset % MAXBSIZE;
520 if (vp->v_type == VREG) {
530 error = vn_rdwr(rw, vp, base, chunk, offset, segflg,
531 ioflg, cred, aresid);
532 len -= chunk; /* aresid calc already includes length */
545 * MPALMOSTSAFE - acquires mplock
548 vn_read(struct file *fp, struct uio *uio, struct ucred *cred, int flags)
550 struct ccms_lock ccms_lock;
555 KASSERT(uio->uio_td == curthread,
556 ("uio_td %p is not td %p", uio->uio_td, curthread));
557 vp = (struct vnode *)fp->f_data;
560 if (flags & O_FBLOCKING) {
561 /* ioflag &= ~IO_NDELAY; */
562 } else if (flags & O_FNONBLOCKING) {
564 } else if (fp->f_flag & FNONBLOCK) {
567 if (flags & O_FBUFFERED) {
568 /* ioflag &= ~IO_DIRECT; */
569 } else if (flags & O_FUNBUFFERED) {
571 } else if (fp->f_flag & O_DIRECT) {
574 vn_lock(vp, LK_SHARED | LK_RETRY);
575 if ((flags & O_FOFFSET) == 0)
576 uio->uio_offset = fp->f_offset;
577 ioflag |= sequential_heuristic(uio, fp);
579 ccms_lock_get_uio(&vp->v_ccms, &ccms_lock, uio);
580 error = VOP_READ(vp, uio, ioflag, cred);
581 ccms_lock_put(&vp->v_ccms, &ccms_lock);
582 if ((flags & O_FOFFSET) == 0)
583 fp->f_offset = uio->uio_offset;
584 fp->f_nextoff = uio->uio_offset;
591 * Device-optimized file table vnode read routine.
593 * This bypasses the VOP table and talks directly to the device. Most
594 * filesystems just route to specfs and can make this optimization.
596 * MPALMOSTSAFE - acquires mplock
599 svn_read(struct file *fp, struct uio *uio, struct ucred *cred, int flags)
607 KASSERT(uio->uio_td == curthread,
608 ("uio_td %p is not td %p", uio->uio_td, curthread));
610 vp = (struct vnode *)fp->f_data;
611 if (vp == NULL || vp->v_type == VBAD) {
616 if ((dev = vp->v_rdev) == NULL) {
622 if (uio->uio_resid == 0) {
626 if ((flags & O_FOFFSET) == 0)
627 uio->uio_offset = fp->f_offset;
630 if (flags & O_FBLOCKING) {
631 /* ioflag &= ~IO_NDELAY; */
632 } else if (flags & O_FNONBLOCKING) {
634 } else if (fp->f_flag & FNONBLOCK) {
637 if (flags & O_FBUFFERED) {
638 /* ioflag &= ~IO_DIRECT; */
639 } else if (flags & O_FUNBUFFERED) {
641 } else if (fp->f_flag & O_DIRECT) {
644 ioflag |= sequential_heuristic(uio, fp);
646 error = dev_dread(dev, uio, ioflag);
649 if ((flags & O_FOFFSET) == 0)
650 fp->f_offset = uio->uio_offset;
651 fp->f_nextoff = uio->uio_offset;
658 * MPALMOSTSAFE - acquires mplock
661 vn_write(struct file *fp, struct uio *uio, struct ucred *cred, int flags)
663 struct ccms_lock ccms_lock;
668 KASSERT(uio->uio_td == curthread,
669 ("uio_td %p is not p %p", uio->uio_td, curthread));
670 vp = (struct vnode *)fp->f_data;
672 /* VOP_WRITE should handle this now */
673 if (vp->v_type == VREG || vp->v_type == VDATABASE)
676 vp = (struct vnode *)fp->f_data; /* XXX needed? */
679 if (vp->v_type == VREG &&
680 ((fp->f_flag & O_APPEND) || (flags & O_FAPPEND))) {
684 if (flags & O_FBLOCKING) {
685 /* ioflag &= ~IO_NDELAY; */
686 } else if (flags & O_FNONBLOCKING) {
688 } else if (fp->f_flag & FNONBLOCK) {
691 if (flags & O_FBUFFERED) {
692 /* ioflag &= ~IO_DIRECT; */
693 } else if (flags & O_FUNBUFFERED) {
695 } else if (fp->f_flag & O_DIRECT) {
698 if (flags & O_FASYNCWRITE) {
699 /* ioflag &= ~IO_SYNC; */
700 } else if (flags & O_FSYNCWRITE) {
702 } else if (fp->f_flag & O_FSYNC) {
706 if (vp->v_mount && (vp->v_mount->mnt_flag & MNT_SYNCHRONOUS))
708 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
709 if ((flags & O_FOFFSET) == 0)
710 uio->uio_offset = fp->f_offset;
711 ioflag |= sequential_heuristic(uio, fp);
712 ccms_lock_get_uio(&vp->v_ccms, &ccms_lock, uio);
713 error = VOP_WRITE(vp, uio, ioflag, cred);
714 ccms_lock_put(&vp->v_ccms, &ccms_lock);
715 if ((flags & O_FOFFSET) == 0)
716 fp->f_offset = uio->uio_offset;
717 fp->f_nextoff = uio->uio_offset;
724 * Device-optimized file table vnode write routine.
726 * This bypasses the VOP table and talks directly to the device. Most
727 * filesystems just route to specfs and can make this optimization.
729 * MPALMOSTSAFE - acquires mplock
732 svn_write(struct file *fp, struct uio *uio, struct ucred *cred, int flags)
740 KASSERT(uio->uio_td == curthread,
741 ("uio_td %p is not p %p", uio->uio_td, curthread));
743 vp = (struct vnode *)fp->f_data;
744 if (vp == NULL || vp->v_type == VBAD) {
748 if (vp->v_type == VREG)
749 bwillwrite(uio->uio_resid);
750 vp = (struct vnode *)fp->f_data; /* XXX needed? */
752 if ((dev = vp->v_rdev) == NULL) {
758 if ((flags & O_FOFFSET) == 0)
759 uio->uio_offset = fp->f_offset;
762 if (vp->v_type == VREG &&
763 ((fp->f_flag & O_APPEND) || (flags & O_FAPPEND))) {
767 if (flags & O_FBLOCKING) {
768 /* ioflag &= ~IO_NDELAY; */
769 } else if (flags & O_FNONBLOCKING) {
771 } else if (fp->f_flag & FNONBLOCK) {
774 if (flags & O_FBUFFERED) {
775 /* ioflag &= ~IO_DIRECT; */
776 } else if (flags & O_FUNBUFFERED) {
778 } else if (fp->f_flag & O_DIRECT) {
781 if (flags & O_FASYNCWRITE) {
782 /* ioflag &= ~IO_SYNC; */
783 } else if (flags & O_FSYNCWRITE) {
785 } else if (fp->f_flag & O_FSYNC) {
789 if (vp->v_mount && (vp->v_mount->mnt_flag & MNT_SYNCHRONOUS))
791 ioflag |= sequential_heuristic(uio, fp);
793 error = dev_dwrite(dev, uio, ioflag);
796 if ((flags & O_FOFFSET) == 0)
797 fp->f_offset = uio->uio_offset;
798 fp->f_nextoff = uio->uio_offset;
805 * MPALMOSTSAFE - acquires mplock
808 vn_statfile(struct file *fp, struct stat *sb, struct ucred *cred)
814 vp = (struct vnode *)fp->f_data;
815 error = vn_stat(vp, sb, cred);
821 vn_stat(struct vnode *vp, struct stat *sb, struct ucred *cred)
830 error = VOP_GETATTR(vp, vap);
835 * Zero the spare stat fields
841 * Copy from vattr table
843 if (vap->va_fsid != VNOVAL)
844 sb->st_dev = vap->va_fsid;
846 sb->st_dev = vp->v_mount->mnt_stat.f_fsid.val[0];
847 sb->st_ino = vap->va_fileid;
849 switch (vap->va_type) {
867 /* This is a cosmetic change, symlinks do not have a mode. */
868 if (vp->v_mount->mnt_flag & MNT_NOSYMFOLLOW)
869 sb->st_mode &= ~ACCESSPERMS; /* 0000 */
871 sb->st_mode |= ACCESSPERMS; /* 0777 */
883 if (vap->va_nlink > (nlink_t)-1)
884 sb->st_nlink = (nlink_t)-1;
886 sb->st_nlink = vap->va_nlink;
887 sb->st_uid = vap->va_uid;
888 sb->st_gid = vap->va_gid;
889 sb->st_rdev = makeudev(vap->va_rmajor, vap->va_rminor);
890 sb->st_size = vap->va_size;
891 sb->st_atimespec = vap->va_atime;
892 sb->st_mtimespec = vap->va_mtime;
893 sb->st_ctimespec = vap->va_ctime;
896 * A VCHR and VBLK device may track the last access and last modified
897 * time independantly of the filesystem. This is particularly true
898 * because device read and write calls may bypass the filesystem.
900 if (vp->v_type == VCHR || vp->v_type == VBLK) {
903 if (dev->si_lastread) {
904 sb->st_atimespec.tv_sec = dev->si_lastread;
905 sb->st_atimespec.tv_nsec = 0;
907 if (dev->si_lastwrite) {
908 sb->st_atimespec.tv_sec = dev->si_lastwrite;
909 sb->st_atimespec.tv_nsec = 0;
915 * According to www.opengroup.org, the meaning of st_blksize is
916 * "a filesystem-specific preferred I/O block size for this
917 * object. In some filesystem types, this may vary from file
919 * Default to PAGE_SIZE after much discussion.
922 if (vap->va_type == VREG) {
923 sb->st_blksize = vap->va_blocksize;
924 } else if (vn_isdisk(vp, NULL)) {
926 * XXX this is broken. If the device is not yet open (aka
927 * stat() call, aka v_rdev == NULL), how are we supposed
928 * to get a valid block size out of it?
931 if (dev == NULL && vp->v_type == VCHR) {
932 dev = get_dev(vp->v_umajor, vp->v_uminor);
934 sb->st_blksize = dev->si_bsize_best;
935 if (sb->st_blksize < dev->si_bsize_phys)
936 sb->st_blksize = dev->si_bsize_phys;
937 if (sb->st_blksize < BLKDEV_IOSIZE)
938 sb->st_blksize = BLKDEV_IOSIZE;
940 sb->st_blksize = PAGE_SIZE;
943 sb->st_flags = vap->va_flags;
945 error = priv_check_cred(cred, PRIV_VFS_GENERATION, 0);
949 sb->st_gen = (u_int32_t)vap->va_gen;
951 sb->st_blocks = vap->va_bytes / S_BLKSIZE;
952 sb->st_fsmid = vap->va_fsmid;
957 * MPALMOSTSAFE - acquires mplock
960 vn_ioctl(struct file *fp, u_long com, caddr_t data, struct ucred *ucred)
962 struct vnode *vp = ((struct vnode *)fp->f_data);
969 switch (vp->v_type) {
972 if (com == FIONREAD) {
973 error = VOP_GETATTR(vp, &vattr);
976 *(int *)data = vattr.va_size - fp->f_offset;
980 if (com == FIOASYNC) { /* XXX */
992 if (com == FIODTYPE) {
993 if (vp->v_type != VCHR && vp->v_type != VBLK) {
997 *(int *)data = dev_dflags(vp->v_rdev) & D_TYPEMASK;
1001 error = VOP_IOCTL(vp, com, data, fp->f_flag, ucred);
1002 if (error == 0 && com == TIOCSCTTY) {
1003 struct proc *p = curthread->td_proc;
1004 struct session *sess;
1011 sess = p->p_session;
1012 /* Do nothing if reassigning same control tty */
1013 if (sess->s_ttyvp == vp) {
1018 /* Get rid of reference to old control tty */
1019 ovp = sess->s_ttyvp;
1032 * MPALMOSTSAFE - acquires mplock
1035 vn_poll(struct file *fp, int events, struct ucred *cred)
1040 error = VOP_POLL(((struct vnode *)fp->f_data), events, cred);
1046 * Check that the vnode is still valid, and if so
1047 * acquire requested lock.
1051 vn_lock(struct vnode *vp, int flags)
1053 debug_vn_lock(struct vnode *vp, int flags, const char *filename, int line)
1060 vp->filename = filename;
1062 error = debuglockmgr(&vp->v_lock, flags,
1063 "vn_lock", filename, line);
1065 error = lockmgr(&vp->v_lock, flags);
1069 } while (flags & LK_RETRY);
1072 * Because we (had better!) have a ref on the vnode, once it
1073 * goes to VRECLAIMED state it will not be recycled until all
1074 * refs go away. So we can just check the flag.
1076 if (error == 0 && (vp->v_flag & VRECLAIMED)) {
1077 lockmgr(&vp->v_lock, LK_RELEASE);
1084 vn_unlock(struct vnode *vp)
1086 lockmgr(&vp->v_lock, LK_RELEASE);
1090 vn_islocked(struct vnode *vp)
1092 return (lockstatus(&vp->v_lock, curthread));
1096 * MPALMOSTSAFE - acquires mplock
1099 vn_closefile(struct file *fp)
1104 fp->f_ops = &badfileops;
1105 error = vn_close(((struct vnode *)fp->f_data), fp->f_flag);
1111 * MPALMOSTSAFE - acquires mplock
1114 vn_kqfilter(struct file *fp, struct knote *kn)
1119 error = VOP_KQFILTER(((struct vnode *)fp->f_data), kn);