736 lines
18 KiB
C
736 lines
18 KiB
C
/* $NetBSD: spec_vnops.c,v 1.47 1999/12/08 19:16:52 sommerfeld Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)spec_vnops.c 8.15 (Berkeley) 7/14/95
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*/
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/buf.h>
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#include <sys/mount.h>
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#include <sys/namei.h>
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#include <sys/vnode.h>
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#include <sys/stat.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/file.h>
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#include <sys/disklabel.h>
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#include <sys/lockf.h>
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#include <miscfs/genfs/genfs.h>
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#include <miscfs/specfs/specdev.h>
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/* symbolic sleep message strings for devices */
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const char devopn[] = "devopn";
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const char devio[] = "devio";
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const char devwait[] = "devwait";
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const char devin[] = "devin";
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const char devout[] = "devout";
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const char devioc[] = "devioc";
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const char devcls[] = "devcls";
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/*
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* This vnode operations vector is used for two things only:
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* - special device nodes created from whole cloth by the kernel.
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* - as a temporary vnodeops replacement for vnodes which were found to
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* be aliased by callers of checkalias().
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* For the ops vector for vnodes built from special devices found in a
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* filesystem, see (e.g) ffs_specop_entries[] in ffs_vnops.c or the
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* equivalent for other filesystems.
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*/
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int (**spec_vnodeop_p) __P((void *));
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struct vnodeopv_entry_desc spec_vnodeop_entries[] = {
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{ &vop_default_desc, vn_default_error },
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{ &vop_lookup_desc, spec_lookup }, /* lookup */
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{ &vop_create_desc, spec_create }, /* create */
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{ &vop_mknod_desc, spec_mknod }, /* mknod */
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{ &vop_open_desc, spec_open }, /* open */
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{ &vop_close_desc, spec_close }, /* close */
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{ &vop_access_desc, spec_access }, /* access */
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{ &vop_getattr_desc, spec_getattr }, /* getattr */
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{ &vop_setattr_desc, spec_setattr }, /* setattr */
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{ &vop_read_desc, spec_read }, /* read */
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{ &vop_write_desc, spec_write }, /* write */
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{ &vop_lease_desc, spec_lease_check }, /* lease */
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{ &vop_fcntl_desc, spec_fcntl }, /* fcntl */
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{ &vop_ioctl_desc, spec_ioctl }, /* ioctl */
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{ &vop_poll_desc, spec_poll }, /* poll */
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{ &vop_revoke_desc, spec_revoke }, /* revoke */
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{ &vop_mmap_desc, spec_mmap }, /* mmap */
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{ &vop_fsync_desc, spec_fsync }, /* fsync */
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{ &vop_seek_desc, spec_seek }, /* seek */
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{ &vop_remove_desc, spec_remove }, /* remove */
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{ &vop_link_desc, spec_link }, /* link */
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{ &vop_rename_desc, spec_rename }, /* rename */
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{ &vop_mkdir_desc, spec_mkdir }, /* mkdir */
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{ &vop_rmdir_desc, spec_rmdir }, /* rmdir */
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{ &vop_symlink_desc, spec_symlink }, /* symlink */
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{ &vop_readdir_desc, spec_readdir }, /* readdir */
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{ &vop_readlink_desc, spec_readlink }, /* readlink */
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{ &vop_abortop_desc, spec_abortop }, /* abortop */
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{ &vop_inactive_desc, spec_inactive }, /* inactive */
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{ &vop_reclaim_desc, spec_reclaim }, /* reclaim */
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{ &vop_lock_desc, spec_lock }, /* lock */
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{ &vop_unlock_desc, spec_unlock }, /* unlock */
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{ &vop_bmap_desc, spec_bmap }, /* bmap */
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{ &vop_strategy_desc, spec_strategy }, /* strategy */
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{ &vop_print_desc, spec_print }, /* print */
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{ &vop_islocked_desc, spec_islocked }, /* islocked */
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{ &vop_pathconf_desc, spec_pathconf }, /* pathconf */
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{ &vop_advlock_desc, spec_advlock }, /* advlock */
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{ &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */
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{ &vop_valloc_desc, spec_valloc }, /* valloc */
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{ &vop_vfree_desc, spec_vfree }, /* vfree */
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{ &vop_truncate_desc, spec_truncate }, /* truncate */
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{ &vop_update_desc, spec_update }, /* update */
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{ &vop_bwrite_desc, spec_bwrite }, /* bwrite */
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{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
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};
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struct vnodeopv_desc spec_vnodeop_opv_desc =
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{ &spec_vnodeop_p, spec_vnodeop_entries };
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/*
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* Trivial lookup routine that always fails.
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*/
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int
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spec_lookup(v)
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void *v;
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{
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struct vop_lookup_args /* {
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struct vnode *a_dvp;
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struct vnode **a_vpp;
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struct componentname *a_cnp;
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} */ *ap = v;
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*ap->a_vpp = NULL;
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return (ENOTDIR);
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}
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/*
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* Open a special file.
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*/
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/* ARGSUSED */
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int
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spec_open(v)
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void *v;
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{
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struct vop_open_args /* {
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struct vnode *a_vp;
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int a_mode;
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struct ucred *a_cred;
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struct proc *a_p;
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} */ *ap = v;
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struct proc *p = ap->a_p;
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struct vnode *bvp, *vp = ap->a_vp;
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dev_t bdev, dev = (dev_t)vp->v_rdev;
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register int maj = major(dev);
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int error;
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/*
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* Don't allow open if fs is mounted -nodev.
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*/
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if (vp->v_mount && (vp->v_mount->mnt_flag & MNT_NODEV))
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return (ENXIO);
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switch (vp->v_type) {
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case VCHR:
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if ((u_int)maj >= nchrdev)
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return (ENXIO);
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if (ap->a_cred != FSCRED && (ap->a_mode & FWRITE)) {
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/*
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* When running in very secure mode, do not allow
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* opens for writing of any disk character devices.
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*/
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if (securelevel >= 2 && cdevsw[maj].d_type == D_DISK)
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return (EPERM);
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/*
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* When running in secure mode, do not allow opens
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* for writing of /dev/mem, /dev/kmem, or character
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* devices whose corresponding block devices are
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* currently mounted.
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*/
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if (securelevel >= 1) {
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if ((bdev = chrtoblk(dev)) != (dev_t)NODEV &&
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vfinddev(bdev, VBLK, &bvp) &&
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bvp->v_usecount > 0 &&
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(error = vfs_mountedon(bvp)))
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return (error);
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if (iskmemdev(dev))
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return (EPERM);
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}
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}
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if (cdevsw[maj].d_type == D_TTY)
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vp->v_flag |= VISTTY;
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VOP_UNLOCK(vp, 0);
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error = (*cdevsw[maj].d_open)(dev, ap->a_mode, S_IFCHR, p);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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return (error);
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case VBLK:
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if ((u_int)maj >= nblkdev)
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return (ENXIO);
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/*
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* When running in very secure mode, do not allow
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* opens for writing of any disk block devices.
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*/
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if (securelevel >= 2 && ap->a_cred != FSCRED &&
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(ap->a_mode & FWRITE) && bdevsw[maj].d_type == D_DISK)
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return (EPERM);
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/*
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* Do not allow opens of block devices that are
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* currently mounted.
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*/
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if ((error = vfs_mountedon(vp)) != 0)
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return (error);
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return ((*bdevsw[maj].d_open)(dev, ap->a_mode, S_IFBLK, p));
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case VNON:
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case VLNK:
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case VDIR:
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case VREG:
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case VBAD:
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case VFIFO:
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case VSOCK:
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break;
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}
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return (0);
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}
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/*
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* Vnode op for read
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*/
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/* ARGSUSED */
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int
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spec_read(v)
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void *v;
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{
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struct vop_read_args /* {
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struct vnode *a_vp;
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struct uio *a_uio;
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int a_ioflag;
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struct ucred *a_cred;
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} */ *ap = v;
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register struct vnode *vp = ap->a_vp;
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register struct uio *uio = ap->a_uio;
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struct proc *p = uio->uio_procp;
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struct buf *bp;
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daddr_t bn, nextbn;
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long bsize, bscale, ssize;
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struct partinfo dpart;
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int n, on, majordev;
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int (*ioctl) __P((dev_t, u_long, caddr_t, int, struct proc *));
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int error = 0;
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#ifdef DIAGNOSTIC
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if (uio->uio_rw != UIO_READ)
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panic("spec_read mode");
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if (uio->uio_segflg == UIO_USERSPACE && uio->uio_procp != curproc)
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panic("spec_read proc");
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#endif
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if (uio->uio_resid == 0)
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return (0);
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switch (vp->v_type) {
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case VCHR:
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VOP_UNLOCK(vp, 0);
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error = (*cdevsw[major(vp->v_rdev)].d_read)
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(vp->v_rdev, uio, ap->a_ioflag);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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return (error);
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case VBLK:
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if (uio->uio_offset < 0)
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return (EINVAL);
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bsize = BLKDEV_IOSIZE;
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ssize = DEV_BSIZE;
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if ((majordev = major(vp->v_rdev)) < nblkdev &&
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(ioctl = bdevsw[majordev].d_ioctl) != NULL &&
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(*ioctl)(vp->v_rdev, DIOCGPART, (caddr_t)&dpart, FREAD, p) == 0) {
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if (dpart.part->p_fstype == FS_BSDFFS &&
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dpart.part->p_frag != 0 && dpart.part->p_fsize != 0)
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bsize = dpart.part->p_frag *
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dpart.part->p_fsize;
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if (dpart.disklab->d_secsize != 0)
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ssize = dpart.disklab->d_secsize;
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}
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bscale = bsize / ssize;
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do {
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bn = (uio->uio_offset / ssize) &~ (bscale - 1);
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on = uio->uio_offset % bsize;
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n = min((unsigned)(bsize - on), uio->uio_resid);
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if (vp->v_lastr + bscale == bn) {
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nextbn = bn + bscale;
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error = breadn(vp, bn, (int)bsize, &nextbn,
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(int *)&bsize, 1, NOCRED, &bp);
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} else
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error = bread(vp, bn, (int)bsize, NOCRED, &bp);
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vp->v_lastr = bn;
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n = min(n, bsize - bp->b_resid);
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if (error) {
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brelse(bp);
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return (error);
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}
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error = uiomove((char *)bp->b_data + on, n, uio);
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brelse(bp);
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} while (error == 0 && uio->uio_resid > 0 && n != 0);
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return (error);
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default:
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panic("spec_read type");
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}
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/* NOTREACHED */
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}
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/*
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* Vnode op for write
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*/
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/* ARGSUSED */
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int
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spec_write(v)
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void *v;
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{
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struct vop_write_args /* {
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struct vnode *a_vp;
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struct uio *a_uio;
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int a_ioflag;
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struct ucred *a_cred;
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} */ *ap = v;
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register struct vnode *vp = ap->a_vp;
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register struct uio *uio = ap->a_uio;
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struct proc *p = uio->uio_procp;
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struct buf *bp;
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daddr_t bn;
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long bsize, bscale, ssize;
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struct partinfo dpart;
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int n, on, majordev;
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int (*ioctl) __P((dev_t, u_long, caddr_t, int, struct proc *));
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int error = 0;
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#ifdef DIAGNOSTIC
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if (uio->uio_rw != UIO_WRITE)
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panic("spec_write mode");
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if (uio->uio_segflg == UIO_USERSPACE && uio->uio_procp != curproc)
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panic("spec_write proc");
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#endif
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switch (vp->v_type) {
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case VCHR:
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VOP_UNLOCK(vp, 0);
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error = (*cdevsw[major(vp->v_rdev)].d_write)
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(vp->v_rdev, uio, ap->a_ioflag);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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return (error);
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case VBLK:
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if (uio->uio_resid == 0)
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return (0);
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if (uio->uio_offset < 0)
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return (EINVAL);
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bsize = BLKDEV_IOSIZE;
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ssize = DEV_BSIZE;
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if ((majordev = major(vp->v_rdev)) < nblkdev &&
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(ioctl = bdevsw[majordev].d_ioctl) != NULL &&
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(*ioctl)(vp->v_rdev, DIOCGPART, (caddr_t)&dpart, FREAD, p) == 0) {
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if (dpart.part->p_fstype == FS_BSDFFS &&
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dpart.part->p_frag != 0 && dpart.part->p_fsize != 0)
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bsize = dpart.part->p_frag *
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dpart.part->p_fsize;
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if (dpart.disklab->d_secsize != 0)
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ssize = dpart.disklab->d_secsize;
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}
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bscale = bsize / ssize;
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do {
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bn = (uio->uio_offset / ssize) &~ (bscale - 1);
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on = uio->uio_offset % bsize;
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n = min((unsigned)(bsize - on), uio->uio_resid);
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if (n == bsize)
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bp = getblk(vp, bn, bsize, 0, 0);
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else
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error = bread(vp, bn, bsize, NOCRED, &bp);
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if (error) {
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brelse(bp);
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return (error);
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}
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n = min(n, bsize - bp->b_resid);
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error = uiomove((char *)bp->b_data + on, n, uio);
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if (error)
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brelse(bp);
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else {
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if (n + on == bsize)
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bawrite(bp);
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else
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bdwrite(bp);
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if (bp->b_flags & B_ERROR)
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error = bp->b_error;
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}
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} while (error == 0 && uio->uio_resid > 0 && n != 0);
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return (error);
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default:
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panic("spec_write type");
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}
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/* NOTREACHED */
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}
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/*
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* Device ioctl operation.
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*/
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/* ARGSUSED */
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int
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spec_ioctl(v)
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void *v;
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{
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struct vop_ioctl_args /* {
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struct vnode *a_vp;
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u_long a_command;
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caddr_t a_data;
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int a_fflag;
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struct ucred *a_cred;
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struct proc *a_p;
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} */ *ap = v;
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dev_t dev = ap->a_vp->v_rdev;
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int maj = major(dev);
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switch (ap->a_vp->v_type) {
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case VCHR:
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return ((*cdevsw[maj].d_ioctl)(dev, ap->a_command, ap->a_data,
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ap->a_fflag, ap->a_p));
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case VBLK:
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if (ap->a_command == 0 && (long)ap->a_data == B_TAPE) {
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if (bdevsw[maj].d_type == D_TAPE)
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return (0);
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else
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return (1);
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}
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return ((*bdevsw[maj].d_ioctl)(dev, ap->a_command, ap->a_data,
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ap->a_fflag, ap->a_p));
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default:
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panic("spec_ioctl");
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/* NOTREACHED */
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}
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}
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/* ARGSUSED */
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int
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spec_poll(v)
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void *v;
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{
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struct vop_poll_args /* {
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struct vnode *a_vp;
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int a_events;
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struct proc *a_p;
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} */ *ap = v;
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register dev_t dev;
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switch (ap->a_vp->v_type) {
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case VCHR:
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dev = ap->a_vp->v_rdev;
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return (*cdevsw[major(dev)].d_poll)(dev, ap->a_events, ap->a_p);
|
|
|
|
default:
|
|
return (genfs_poll(v));
|
|
}
|
|
}
|
|
/*
|
|
* Synch buffers associated with a block device
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
spec_fsync(v)
|
|
void *v;
|
|
{
|
|
struct vop_fsync_args /* {
|
|
struct vnode *a_vp;
|
|
struct ucred *a_cred;
|
|
int a_flags;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
register struct vnode *vp = ap->a_vp;
|
|
|
|
if (vp->v_type == VBLK)
|
|
vflushbuf(vp, (ap->a_flags & FSYNC_WAIT) != 0);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Just call the device strategy routine
|
|
*/
|
|
int
|
|
spec_strategy(v)
|
|
void *v;
|
|
{
|
|
struct vop_strategy_args /* {
|
|
struct buf *a_bp;
|
|
} */ *ap = v;
|
|
struct buf *bp;
|
|
|
|
bp = ap->a_bp;
|
|
if (!(bp->b_flags & B_READ) &&
|
|
(LIST_FIRST(&bp->b_dep)) != NULL && bioops.io_start)
|
|
(*bioops.io_start)(bp);
|
|
(*bdevsw[major(bp->b_dev)].d_strategy)(bp);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
spec_inactive(v)
|
|
void *v;
|
|
{
|
|
struct vop_inactive_args /* {
|
|
struct vnode *a_vp;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
|
|
VOP_UNLOCK(ap->a_vp, 0);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This is a noop, simply returning what one has been given.
|
|
*/
|
|
int
|
|
spec_bmap(v)
|
|
void *v;
|
|
{
|
|
struct vop_bmap_args /* {
|
|
struct vnode *a_vp;
|
|
daddr_t a_bn;
|
|
struct vnode **a_vpp;
|
|
daddr_t *a_bnp;
|
|
int *a_runp;
|
|
} */ *ap = v;
|
|
|
|
if (ap->a_vpp != NULL)
|
|
*ap->a_vpp = ap->a_vp;
|
|
if (ap->a_bnp != NULL)
|
|
*ap->a_bnp = ap->a_bn;
|
|
if (ap->a_runp != NULL)
|
|
*ap->a_runp = 0;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Device close routine
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
spec_close(v)
|
|
void *v;
|
|
{
|
|
struct vop_close_args /* {
|
|
struct vnode *a_vp;
|
|
int a_fflag;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
register struct vnode *vp = ap->a_vp;
|
|
dev_t dev = vp->v_rdev;
|
|
int (*devclose) __P((dev_t, int, int, struct proc *));
|
|
int mode, error, count, flags, flags1;
|
|
|
|
simple_lock(&vp->v_interlock);
|
|
count = vcount(vp);
|
|
flags = vp->v_flag;
|
|
simple_unlock(&vp->v_interlock);
|
|
|
|
switch (vp->v_type) {
|
|
|
|
case VCHR:
|
|
/*
|
|
* Hack: a tty device that is a controlling terminal
|
|
* has a reference from the session structure.
|
|
* We cannot easily tell that a character device is
|
|
* a controlling terminal, unless it is the closing
|
|
* process' controlling terminal. In that case,
|
|
* if the reference count is 2 (this last descriptor
|
|
* plus the session), release the reference from the session.
|
|
*/
|
|
if (count == 2 && ap->a_p &&
|
|
vp == ap->a_p->p_session->s_ttyvp) {
|
|
vrele(vp);
|
|
count--;
|
|
ap->a_p->p_session->s_ttyvp = NULL;
|
|
}
|
|
/*
|
|
* If the vnode is locked, then we are in the midst
|
|
* of forcably closing the device, otherwise we only
|
|
* close on last reference.
|
|
*/
|
|
if (count > 1 && (flags & VXLOCK) == 0)
|
|
return (0);
|
|
devclose = cdevsw[major(dev)].d_close;
|
|
mode = S_IFCHR;
|
|
break;
|
|
|
|
case VBLK:
|
|
/*
|
|
* On last close of a block device (that isn't mounted)
|
|
* we must invalidate any in core blocks, so that
|
|
* we can, for instance, change floppy disks.
|
|
*/
|
|
error = vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 0, 0);
|
|
if (error)
|
|
return (error);
|
|
/*
|
|
* We do not want to really close the device if it
|
|
* is still in use unless we are trying to close it
|
|
* forcibly. Since every use (buffer, vnode, swap, cmap)
|
|
* holds a reference to the vnode, and because we mark
|
|
* any other vnodes that alias this device, when the
|
|
* sum of the reference counts on all the aliased
|
|
* vnodes descends to one, we are on last close.
|
|
*/
|
|
if (count > 1 && (flags & VXLOCK) == 0)
|
|
return (0);
|
|
devclose = bdevsw[major(dev)].d_close;
|
|
mode = S_IFBLK;
|
|
break;
|
|
|
|
default:
|
|
panic("spec_close: not special");
|
|
}
|
|
|
|
flags1 = ap->a_fflag;
|
|
|
|
/*
|
|
* if VXLOCK is set, then we're going away soon, so make this
|
|
* non-blocking. Also ensures that we won't wedge in vn_lock below.
|
|
*/
|
|
if (flags & VXLOCK)
|
|
flags1 |= FNONBLOCK;
|
|
|
|
/*
|
|
* If we're able to block, release the vnode lock & reaquire. We
|
|
* might end up sleaping for someone else who wants our queues. They
|
|
* won't get them if we hold the vnode locked. Also, if VXLOCK is set,
|
|
* don't release the lock as we won't be able to regain it.
|
|
*/
|
|
if (!(flags1 & FNONBLOCK))
|
|
VOP_UNLOCK(vp, 0);
|
|
|
|
error = (*devclose)(dev, flags1, mode, ap->a_p);
|
|
|
|
if (!(flags1 & FNONBLOCK))
|
|
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Print out the contents of a special device vnode.
|
|
*/
|
|
int
|
|
spec_print(v)
|
|
void *v;
|
|
{
|
|
struct vop_print_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *ap = v;
|
|
|
|
printf("tag VT_NON, dev %d, %d\n", major(ap->a_vp->v_rdev),
|
|
minor(ap->a_vp->v_rdev));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return POSIX pathconf information applicable to special devices.
|
|
*/
|
|
int
|
|
spec_pathconf(v)
|
|
void *v;
|
|
{
|
|
struct vop_pathconf_args /* {
|
|
struct vnode *a_vp;
|
|
int a_name;
|
|
register_t *a_retval;
|
|
} */ *ap = v;
|
|
|
|
switch (ap->a_name) {
|
|
case _PC_LINK_MAX:
|
|
*ap->a_retval = LINK_MAX;
|
|
return (0);
|
|
case _PC_MAX_CANON:
|
|
*ap->a_retval = MAX_CANON;
|
|
return (0);
|
|
case _PC_MAX_INPUT:
|
|
*ap->a_retval = MAX_INPUT;
|
|
return (0);
|
|
case _PC_PIPE_BUF:
|
|
*ap->a_retval = PIPE_BUF;
|
|
return (0);
|
|
case _PC_CHOWN_RESTRICTED:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
case _PC_VDISABLE:
|
|
*ap->a_retval = _POSIX_VDISABLE;
|
|
return (0);
|
|
case _PC_SYNC_IO:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/*
|
|
* Advisory record locking support.
|
|
*/
|
|
int
|
|
spec_advlock(v)
|
|
void *v;
|
|
{
|
|
struct vop_advlock_args /* {
|
|
struct vnode *a_vp;
|
|
caddr_t a_id;
|
|
int a_op;
|
|
struct flock *a_fl;
|
|
int a_flags;
|
|
} */ *ap = v;
|
|
register struct vnode *vp = ap->a_vp;
|
|
|
|
return (lf_advlock(&vp->v_speclockf, (off_t)0, ap->a_id, ap->a_op,
|
|
ap->a_fl, ap->a_flags));
|
|
}
|