- Fix for possible unset uid/gid in toproto - Fix for default mtree style - Update libelf - Importing libexecinfo - Resynchronize GCC, mpc, gmp, mpfr - build.sh: Replace params with show-params. This has been done as the make target has been renamed in the same way, while a new target named params has been added. This new target generates a file containing all the parameters, instead of printing it on the console. - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org) get getservbyport() out of the inner loop Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
1570 lines
38 KiB
C
1570 lines
38 KiB
C
/* $NetBSD: ulfs_vnops.c,v 1.18 2013/07/28 01:10:49 dholland Exp $ */
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/* from NetBSD: ufs_vnops.c,v 1.213 2013/06/08 05:47:02 kardel Exp */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Wasabi Systems, Inc.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1982, 1986, 1989, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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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. 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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* @(#)ufs_vnops.c 8.28 (Berkeley) 7/31/95
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ulfs_vnops.c,v 1.18 2013/07/28 01:10:49 dholland Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_lfs.h"
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#include "opt_quota.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/namei.h>
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#include <sys/resourcevar.h>
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#include <sys/kernel.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/vnode.h>
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#include <sys/kmem.h>
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#include <sys/malloc.h>
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#include <sys/dirent.h>
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#include <sys/lockf.h>
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#include <sys/kauth.h>
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#include <sys/wapbl.h>
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#include <sys/fstrans.h>
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#include <miscfs/specfs/specdev.h>
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#include <miscfs/fifofs/fifo.h>
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#include <miscfs/genfs/genfs.h>
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#include <ufs/lfs/ulfs_inode.h>
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#include <ufs/lfs/ulfsmount.h>
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#include <ufs/lfs/ulfs_bswap.h>
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#include <ufs/lfs/ulfs_extern.h>
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#ifdef LFS_DIRHASH
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#include <ufs/lfs/ulfs_dirhash.h>
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#endif
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#include <ufs/lfs/lfs_extern.h>
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#include <ufs/lfs/lfs.h>
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#include <uvm/uvm.h>
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static int ulfs_chmod(struct vnode *, int, kauth_cred_t, struct lwp *);
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static int ulfs_chown(struct vnode *, uid_t, gid_t, kauth_cred_t,
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struct lwp *);
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/*
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* A virgin directory (no blushing please).
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*/
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static const struct lfs_dirtemplate mastertemplate = {
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0, 12, LFS_DT_DIR, 1, ".",
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0, LFS_DIRBLKSIZ - 12, LFS_DT_DIR, 2, ".."
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};
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/*
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* Create a regular file
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*/
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int
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ulfs_create(void *v)
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{
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struct vop_create_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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struct vattr *a_vap;
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} */ *ap = v;
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int error;
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struct vnode *dvp = ap->a_dvp;
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struct ulfs_lookup_results *ulr;
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/* XXX should handle this material another way */
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ulr = &VTOI(dvp)->i_crap;
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ULFS_CHECK_CRAPCOUNTER(VTOI(dvp));
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fstrans_start(dvp->v_mount, FSTRANS_SHARED);
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error =
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ulfs_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
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dvp, ulr, ap->a_vpp, ap->a_cnp);
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if (error) {
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fstrans_done(dvp->v_mount);
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return (error);
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}
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fstrans_done(dvp->v_mount);
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VN_KNOTE(dvp, NOTE_WRITE);
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return (0);
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}
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/*
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* Open called.
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*
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* Nothing to do.
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*/
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/* ARGSUSED */
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int
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ulfs_open(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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kauth_cred_t a_cred;
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} */ *ap = v;
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/*
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* Files marked append-only must be opened for appending.
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*/
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if ((VTOI(ap->a_vp)->i_flags & APPEND) &&
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(ap->a_mode & (FWRITE | O_APPEND)) == FWRITE)
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return (EPERM);
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return (0);
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}
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static int
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ulfs_check_possible(struct vnode *vp, struct inode *ip, mode_t mode,
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kauth_cred_t cred)
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{
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#if defined(LFS_QUOTA) || defined(LFS_QUOTA2)
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int error;
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#endif
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/*
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* Disallow write attempts on read-only file systems;
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* unless the file is a socket, fifo, or a block or
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* character device resident on the file system.
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*/
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if (mode & VWRITE) {
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switch (vp->v_type) {
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case VDIR:
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case VLNK:
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case VREG:
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if (vp->v_mount->mnt_flag & MNT_RDONLY)
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return (EROFS);
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#if defined(LFS_QUOTA) || defined(LFS_QUOTA2)
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fstrans_start(vp->v_mount, FSTRANS_SHARED);
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error = lfs_chkdq(ip, 0, cred, 0);
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fstrans_done(vp->v_mount);
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if (error != 0)
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return error;
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#endif
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break;
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case VBAD:
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case VBLK:
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case VCHR:
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case VSOCK:
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case VFIFO:
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case VNON:
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default:
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break;
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}
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}
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/* If it is a snapshot, nobody gets access to it. */
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if ((ip->i_flags & SF_SNAPSHOT))
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return (EPERM);
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/* If immutable bit set, nobody gets to write it. */
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if ((mode & VWRITE) && (ip->i_flags & IMMUTABLE))
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return (EPERM);
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return 0;
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}
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static int
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ulfs_check_permitted(struct vnode *vp, struct inode *ip, mode_t mode,
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kauth_cred_t cred)
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{
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return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode, vp->v_type,
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ip->i_mode & ALLPERMS), vp, NULL, genfs_can_access(vp->v_type,
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ip->i_mode & ALLPERMS, ip->i_uid, ip->i_gid, mode, cred));
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}
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int
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ulfs_access(void *v)
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{
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struct vop_access_args /* {
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struct vnode *a_vp;
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int a_mode;
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kauth_cred_t a_cred;
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} */ *ap = v;
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struct vnode *vp;
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struct inode *ip;
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mode_t mode;
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int error;
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vp = ap->a_vp;
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ip = VTOI(vp);
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mode = ap->a_mode;
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error = ulfs_check_possible(vp, ip, mode, ap->a_cred);
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if (error)
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return error;
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error = ulfs_check_permitted(vp, ip, mode, ap->a_cred);
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return error;
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}
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/*
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* Set attribute vnode op. called from several syscalls
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*/
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int
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ulfs_setattr(void *v)
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{
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struct vop_setattr_args /* {
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struct vnode *a_vp;
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struct vattr *a_vap;
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kauth_cred_t a_cred;
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} */ *ap = v;
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struct vattr *vap;
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struct vnode *vp;
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struct inode *ip;
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kauth_cred_t cred;
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struct lwp *l;
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int error;
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kauth_action_t action;
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bool changing_sysflags;
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vap = ap->a_vap;
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vp = ap->a_vp;
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ip = VTOI(vp);
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cred = ap->a_cred;
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l = curlwp;
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action = KAUTH_VNODE_WRITE_FLAGS;
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changing_sysflags = false;
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/*
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* Check for unsettable attributes.
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*/
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if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
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(vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
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(vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
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((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
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return (EINVAL);
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}
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fstrans_start(vp->v_mount, FSTRANS_SHARED);
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if (vap->va_flags != VNOVAL) {
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if (vp->v_mount->mnt_flag & MNT_RDONLY) {
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error = EROFS;
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goto out;
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}
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|
|
|
/* Snapshot flag cannot be set or cleared */
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if ((vap->va_flags & (SF_SNAPSHOT | SF_SNAPINVAL)) !=
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(ip->i_flags & (SF_SNAPSHOT | SF_SNAPINVAL))) {
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error = EPERM;
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goto out;
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}
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if (ip->i_flags & (SF_IMMUTABLE | SF_APPEND)) {
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action |= KAUTH_VNODE_HAS_SYSFLAGS;
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}
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if ((vap->va_flags & SF_SETTABLE) != (ip->i_flags & SF_SETTABLE)) {
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action |= KAUTH_VNODE_WRITE_SYSFLAGS;
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changing_sysflags = true;
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}
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|
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error = kauth_authorize_vnode(cred, action, vp, NULL,
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genfs_can_chflags(cred, vp->v_type, ip->i_uid,
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changing_sysflags));
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if (error)
|
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goto out;
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|
|
|
if (changing_sysflags) {
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ip->i_flags = vap->va_flags;
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DIP_ASSIGN(ip, flags, ip->i_flags);
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} else {
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ip->i_flags &= SF_SETTABLE;
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ip->i_flags |= (vap->va_flags & UF_SETTABLE);
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DIP_ASSIGN(ip, flags, ip->i_flags);
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}
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ip->i_flag |= IN_CHANGE;
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if (vap->va_flags & (IMMUTABLE | APPEND)) {
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error = 0;
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goto out;
|
|
}
|
|
}
|
|
if (ip->i_flags & (IMMUTABLE | APPEND)) {
|
|
error = EPERM;
|
|
goto out;
|
|
}
|
|
/*
|
|
* Go through the fields and update iff not VNOVAL.
|
|
*/
|
|
if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
|
|
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
|
|
error = EROFS;
|
|
goto out;
|
|
}
|
|
error = ulfs_chown(vp, vap->va_uid, vap->va_gid, cred, l);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
if (vap->va_size != VNOVAL) {
|
|
/*
|
|
* Disallow write attempts on read-only file systems;
|
|
* unless the file is a socket, fifo, or a block or
|
|
* character device resident on the file system.
|
|
*/
|
|
switch (vp->v_type) {
|
|
case VDIR:
|
|
error = EISDIR;
|
|
goto out;
|
|
case VCHR:
|
|
case VBLK:
|
|
case VFIFO:
|
|
break;
|
|
case VREG:
|
|
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
|
|
error = EROFS;
|
|
goto out;
|
|
}
|
|
if ((ip->i_flags & SF_SNAPSHOT) != 0) {
|
|
error = EPERM;
|
|
goto out;
|
|
}
|
|
error = lfs_truncate(vp, vap->va_size, 0, cred);
|
|
if (error)
|
|
goto out;
|
|
break;
|
|
default:
|
|
error = EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
}
|
|
ip = VTOI(vp);
|
|
if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
|
|
vap->va_birthtime.tv_sec != VNOVAL) {
|
|
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
|
|
error = EROFS;
|
|
goto out;
|
|
}
|
|
if ((ip->i_flags & SF_SNAPSHOT) != 0) {
|
|
error = EPERM;
|
|
goto out;
|
|
}
|
|
error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_TIMES, vp,
|
|
NULL, genfs_can_chtimes(vp, vap->va_vaflags, ip->i_uid, cred));
|
|
if (error)
|
|
goto out;
|
|
if (vap->va_atime.tv_sec != VNOVAL)
|
|
if (!(vp->v_mount->mnt_flag & MNT_NOATIME))
|
|
ip->i_flag |= IN_ACCESS;
|
|
if (vap->va_mtime.tv_sec != VNOVAL) {
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
if (vp->v_mount->mnt_flag & MNT_RELATIME)
|
|
ip->i_flag |= IN_ACCESS;
|
|
}
|
|
if (vap->va_birthtime.tv_sec != VNOVAL &&
|
|
ip->i_ump->um_fstype == ULFS2) {
|
|
ip->i_ffs2_birthtime = vap->va_birthtime.tv_sec;
|
|
ip->i_ffs2_birthnsec = vap->va_birthtime.tv_nsec;
|
|
}
|
|
error = lfs_update(vp, &vap->va_atime, &vap->va_mtime, 0);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
error = 0;
|
|
if (vap->va_mode != (mode_t)VNOVAL) {
|
|
if (vp->v_mount->mnt_flag & MNT_RDONLY) {
|
|
error = EROFS;
|
|
goto out;
|
|
}
|
|
if ((ip->i_flags & SF_SNAPSHOT) != 0 &&
|
|
(vap->va_mode & (S_IXUSR | S_IWUSR | S_IXGRP | S_IWGRP |
|
|
S_IXOTH | S_IWOTH))) {
|
|
error = EPERM;
|
|
goto out;
|
|
}
|
|
error = ulfs_chmod(vp, (int)vap->va_mode, cred, l);
|
|
}
|
|
VN_KNOTE(vp, NOTE_ATTRIB);
|
|
out:
|
|
fstrans_done(vp->v_mount);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Change the mode on a file.
|
|
* Inode must be locked before calling.
|
|
*/
|
|
static int
|
|
ulfs_chmod(struct vnode *vp, int mode, kauth_cred_t cred, struct lwp *l)
|
|
{
|
|
struct inode *ip;
|
|
int error;
|
|
|
|
ip = VTOI(vp);
|
|
|
|
error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_SECURITY, vp,
|
|
NULL, genfs_can_chmod(vp->v_type, cred, ip->i_uid, ip->i_gid, mode));
|
|
if (error)
|
|
return (error);
|
|
|
|
fstrans_start(vp->v_mount, FSTRANS_SHARED);
|
|
ip->i_mode &= ~ALLPERMS;
|
|
ip->i_mode |= (mode & ALLPERMS);
|
|
ip->i_flag |= IN_CHANGE;
|
|
DIP_ASSIGN(ip, mode, ip->i_mode);
|
|
fstrans_done(vp->v_mount);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Perform chown operation on inode ip;
|
|
* inode must be locked prior to call.
|
|
*/
|
|
static int
|
|
ulfs_chown(struct vnode *vp, uid_t uid, gid_t gid, kauth_cred_t cred,
|
|
struct lwp *l)
|
|
{
|
|
struct inode *ip;
|
|
int error = 0;
|
|
#if defined(LFS_QUOTA) || defined(LFS_QUOTA2)
|
|
uid_t ouid;
|
|
gid_t ogid;
|
|
int64_t change;
|
|
#endif
|
|
ip = VTOI(vp);
|
|
error = 0;
|
|
|
|
if (uid == (uid_t)VNOVAL)
|
|
uid = ip->i_uid;
|
|
if (gid == (gid_t)VNOVAL)
|
|
gid = ip->i_gid;
|
|
|
|
error = kauth_authorize_vnode(cred, KAUTH_VNODE_CHANGE_OWNERSHIP, vp,
|
|
NULL, genfs_can_chown(cred, ip->i_uid, ip->i_gid, uid, gid));
|
|
if (error)
|
|
return (error);
|
|
|
|
fstrans_start(vp->v_mount, FSTRANS_SHARED);
|
|
#if defined(LFS_QUOTA) || defined(LFS_QUOTA2)
|
|
ogid = ip->i_gid;
|
|
ouid = ip->i_uid;
|
|
change = DIP(ip, blocks);
|
|
(void) lfs_chkdq(ip, -change, cred, 0);
|
|
(void) lfs_chkiq(ip, -1, cred, 0);
|
|
#endif
|
|
ip->i_gid = gid;
|
|
DIP_ASSIGN(ip, gid, gid);
|
|
ip->i_uid = uid;
|
|
DIP_ASSIGN(ip, uid, uid);
|
|
#if defined(LFS_QUOTA) || defined(LFS_QUOTA2)
|
|
if ((error = lfs_chkdq(ip, change, cred, 0)) == 0) {
|
|
if ((error = lfs_chkiq(ip, 1, cred, 0)) == 0)
|
|
goto good;
|
|
else
|
|
(void) lfs_chkdq(ip, -change, cred, FORCE);
|
|
}
|
|
ip->i_gid = ogid;
|
|
DIP_ASSIGN(ip, gid, ogid);
|
|
ip->i_uid = ouid;
|
|
DIP_ASSIGN(ip, uid, ouid);
|
|
(void) lfs_chkdq(ip, change, cred, FORCE);
|
|
(void) lfs_chkiq(ip, 1, cred, FORCE);
|
|
fstrans_done(vp->v_mount);
|
|
return (error);
|
|
good:
|
|
#endif /* LFS_QUOTA || LFS_QUOTA2 */
|
|
ip->i_flag |= IN_CHANGE;
|
|
fstrans_done(vp->v_mount);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ulfs_remove(void *v)
|
|
{
|
|
struct vop_remove_args /* {
|
|
struct vnode *a_dvp;
|
|
struct vnode *a_vp;
|
|
struct componentname *a_cnp;
|
|
} */ *ap = v;
|
|
struct vnode *vp, *dvp;
|
|
struct inode *ip;
|
|
int error;
|
|
struct ulfs_lookup_results *ulr;
|
|
|
|
vp = ap->a_vp;
|
|
dvp = ap->a_dvp;
|
|
ip = VTOI(vp);
|
|
|
|
/* XXX should handle this material another way */
|
|
ulr = &VTOI(dvp)->i_crap;
|
|
ULFS_CHECK_CRAPCOUNTER(VTOI(dvp));
|
|
|
|
fstrans_start(dvp->v_mount, FSTRANS_SHARED);
|
|
if (vp->v_type == VDIR || (ip->i_flags & (IMMUTABLE | APPEND)) ||
|
|
(VTOI(dvp)->i_flags & APPEND))
|
|
error = EPERM;
|
|
else {
|
|
error = ulfs_dirremove(dvp, ulr,
|
|
ip, ap->a_cnp->cn_flags, 0);
|
|
}
|
|
VN_KNOTE(vp, NOTE_DELETE);
|
|
VN_KNOTE(dvp, NOTE_WRITE);
|
|
if (dvp == vp)
|
|
vrele(vp);
|
|
else
|
|
vput(vp);
|
|
vput(dvp);
|
|
fstrans_done(dvp->v_mount);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* ulfs_link: create hard link.
|
|
*/
|
|
int
|
|
ulfs_link(void *v)
|
|
{
|
|
struct vop_link_args /* {
|
|
struct vnode *a_dvp;
|
|
struct vnode *a_vp;
|
|
struct componentname *a_cnp;
|
|
} */ *ap = v;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct inode *ip;
|
|
struct lfs_direct *newdir;
|
|
int error;
|
|
struct ulfs_lookup_results *ulr;
|
|
|
|
KASSERT(dvp != vp);
|
|
KASSERT(vp->v_type != VDIR);
|
|
KASSERT(dvp->v_mount == vp->v_mount);
|
|
|
|
/* XXX should handle this material another way */
|
|
ulr = &VTOI(dvp)->i_crap;
|
|
ULFS_CHECK_CRAPCOUNTER(VTOI(dvp));
|
|
|
|
fstrans_start(dvp->v_mount, FSTRANS_SHARED);
|
|
error = vn_lock(vp, LK_EXCLUSIVE);
|
|
if (error) {
|
|
VOP_ABORTOP(dvp, cnp);
|
|
goto out2;
|
|
}
|
|
ip = VTOI(vp);
|
|
if ((nlink_t)ip->i_nlink >= LINK_MAX) {
|
|
VOP_ABORTOP(dvp, cnp);
|
|
error = EMLINK;
|
|
goto out1;
|
|
}
|
|
if (ip->i_flags & (IMMUTABLE | APPEND)) {
|
|
VOP_ABORTOP(dvp, cnp);
|
|
error = EPERM;
|
|
goto out1;
|
|
}
|
|
ip->i_nlink++;
|
|
DIP_ASSIGN(ip, nlink, ip->i_nlink);
|
|
ip->i_flag |= IN_CHANGE;
|
|
error = lfs_update(vp, NULL, NULL, UPDATE_DIROP);
|
|
if (!error) {
|
|
newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK);
|
|
ulfs_makedirentry(ip, cnp, newdir);
|
|
error = ulfs_direnter(dvp, ulr, vp, newdir, cnp, NULL);
|
|
pool_cache_put(ulfs_direct_cache, newdir);
|
|
}
|
|
if (error) {
|
|
ip->i_nlink--;
|
|
DIP_ASSIGN(ip, nlink, ip->i_nlink);
|
|
ip->i_flag |= IN_CHANGE;
|
|
}
|
|
out1:
|
|
VOP_UNLOCK(vp);
|
|
out2:
|
|
VN_KNOTE(vp, NOTE_LINK);
|
|
VN_KNOTE(dvp, NOTE_WRITE);
|
|
vput(dvp);
|
|
fstrans_done(dvp->v_mount);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* whiteout vnode call
|
|
*/
|
|
int
|
|
ulfs_whiteout(void *v)
|
|
{
|
|
struct vop_whiteout_args /* {
|
|
struct vnode *a_dvp;
|
|
struct componentname *a_cnp;
|
|
int a_flags;
|
|
} */ *ap = v;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct lfs_direct *newdir;
|
|
int error;
|
|
struct ulfsmount *ump = VFSTOULFS(dvp->v_mount);
|
|
struct lfs *fs = ump->um_lfs;
|
|
struct ulfs_lookup_results *ulr;
|
|
|
|
/* XXX should handle this material another way */
|
|
ulr = &VTOI(dvp)->i_crap;
|
|
ULFS_CHECK_CRAPCOUNTER(VTOI(dvp));
|
|
|
|
error = 0;
|
|
switch (ap->a_flags) {
|
|
case LOOKUP:
|
|
/* 4.4 format directories support whiteout operations */
|
|
if (fs->um_maxsymlinklen > 0)
|
|
return (0);
|
|
return (EOPNOTSUPP);
|
|
|
|
case CREATE:
|
|
/* create a new directory whiteout */
|
|
fstrans_start(dvp->v_mount, FSTRANS_SHARED);
|
|
#ifdef DIAGNOSTIC
|
|
if (fs->um_maxsymlinklen <= 0)
|
|
panic("ulfs_whiteout: old format filesystem");
|
|
#endif
|
|
|
|
newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK);
|
|
newdir->d_ino = ULFS_WINO;
|
|
newdir->d_namlen = cnp->cn_namelen;
|
|
memcpy(newdir->d_name, cnp->cn_nameptr,
|
|
(size_t)cnp->cn_namelen);
|
|
newdir->d_name[cnp->cn_namelen] = '\0';
|
|
newdir->d_type = LFS_DT_WHT;
|
|
error = ulfs_direnter(dvp, ulr, NULL, newdir, cnp, NULL);
|
|
pool_cache_put(ulfs_direct_cache, newdir);
|
|
break;
|
|
|
|
case DELETE:
|
|
/* remove an existing directory whiteout */
|
|
fstrans_start(dvp->v_mount, FSTRANS_SHARED);
|
|
#ifdef DIAGNOSTIC
|
|
if (fs->um_maxsymlinklen <= 0)
|
|
panic("ulfs_whiteout: old format filesystem");
|
|
#endif
|
|
|
|
cnp->cn_flags &= ~DOWHITEOUT;
|
|
error = ulfs_dirremove(dvp, ulr, NULL, cnp->cn_flags, 0);
|
|
break;
|
|
default:
|
|
panic("ulfs_whiteout: unknown op");
|
|
/* NOTREACHED */
|
|
}
|
|
fstrans_done(dvp->v_mount);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ulfs_mkdir(void *v)
|
|
{
|
|
struct vop_mkdir_args /* {
|
|
struct vnode *a_dvp;
|
|
struct vnode **a_vpp;
|
|
struct componentname *a_cnp;
|
|
struct vattr *a_vap;
|
|
} */ *ap = v;
|
|
struct vnode *dvp = ap->a_dvp, *tvp;
|
|
struct vattr *vap = ap->a_vap;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct inode *ip, *dp = VTOI(dvp);
|
|
struct buf *bp;
|
|
struct lfs_dirtemplate dirtemplate;
|
|
struct lfs_direct *newdir;
|
|
int error, dmode;
|
|
struct ulfsmount *ump = dp->i_ump;
|
|
struct lfs *fs = ump->um_lfs;
|
|
int dirblksiz = fs->um_dirblksiz;
|
|
struct ulfs_lookup_results *ulr;
|
|
|
|
fstrans_start(dvp->v_mount, FSTRANS_SHARED);
|
|
|
|
/* XXX should handle this material another way */
|
|
ulr = &dp->i_crap;
|
|
ULFS_CHECK_CRAPCOUNTER(dp);
|
|
|
|
if ((nlink_t)dp->i_nlink >= LINK_MAX) {
|
|
error = EMLINK;
|
|
goto out;
|
|
}
|
|
dmode = vap->va_mode & ACCESSPERMS;
|
|
dmode |= LFS_IFDIR;
|
|
/*
|
|
* Must simulate part of ulfs_makeinode here to acquire the inode,
|
|
* but not have it entered in the parent directory. The entry is
|
|
* made later after writing "." and ".." entries.
|
|
*/
|
|
if ((error = lfs_valloc(dvp, dmode, cnp->cn_cred, ap->a_vpp)) != 0)
|
|
goto out;
|
|
|
|
tvp = *ap->a_vpp;
|
|
ip = VTOI(tvp);
|
|
|
|
ip->i_uid = kauth_cred_geteuid(cnp->cn_cred);
|
|
DIP_ASSIGN(ip, uid, ip->i_uid);
|
|
ip->i_gid = dp->i_gid;
|
|
DIP_ASSIGN(ip, gid, ip->i_gid);
|
|
#if defined(LFS_QUOTA) || defined(LFS_QUOTA2)
|
|
if ((error = lfs_chkiq(ip, 1, cnp->cn_cred, 0))) {
|
|
lfs_vfree(tvp, ip->i_number, dmode);
|
|
fstrans_done(dvp->v_mount);
|
|
vput(tvp);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
#endif
|
|
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
|
|
ip->i_mode = dmode;
|
|
DIP_ASSIGN(ip, mode, dmode);
|
|
tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
|
|
ip->i_nlink = 2;
|
|
DIP_ASSIGN(ip, nlink, 2);
|
|
if (cnp->cn_flags & ISWHITEOUT) {
|
|
ip->i_flags |= UF_OPAQUE;
|
|
DIP_ASSIGN(ip, flags, ip->i_flags);
|
|
}
|
|
|
|
/*
|
|
* Bump link count in parent directory to reflect work done below.
|
|
* Should be done before reference is created so cleanup is
|
|
* possible if we crash.
|
|
*/
|
|
dp->i_nlink++;
|
|
DIP_ASSIGN(dp, nlink, dp->i_nlink);
|
|
dp->i_flag |= IN_CHANGE;
|
|
if ((error = lfs_update(dvp, NULL, NULL, UPDATE_DIROP)) != 0)
|
|
goto bad;
|
|
|
|
/*
|
|
* Initialize directory with "." and ".." from static template.
|
|
*/
|
|
dirtemplate = mastertemplate;
|
|
dirtemplate.dotdot_reclen = dirblksiz - dirtemplate.dot_reclen;
|
|
dirtemplate.dot_ino = ulfs_rw32(ip->i_number, ULFS_MPNEEDSWAP(fs));
|
|
dirtemplate.dotdot_ino = ulfs_rw32(dp->i_number, ULFS_MPNEEDSWAP(fs));
|
|
dirtemplate.dot_reclen = ulfs_rw16(dirtemplate.dot_reclen,
|
|
ULFS_MPNEEDSWAP(fs));
|
|
dirtemplate.dotdot_reclen = ulfs_rw16(dirtemplate.dotdot_reclen,
|
|
ULFS_MPNEEDSWAP(fs));
|
|
if (fs->um_maxsymlinklen <= 0) {
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
|
if (ULFS_MPNEEDSWAP(fs) == 0)
|
|
#else
|
|
if (ULFS_MPNEEDSWAP(fs) != 0)
|
|
#endif
|
|
{
|
|
dirtemplate.dot_type = dirtemplate.dot_namlen;
|
|
dirtemplate.dotdot_type = dirtemplate.dotdot_namlen;
|
|
dirtemplate.dot_namlen = dirtemplate.dotdot_namlen = 0;
|
|
} else
|
|
dirtemplate.dot_type = dirtemplate.dotdot_type = 0;
|
|
}
|
|
if ((error = lfs_balloc(tvp, (off_t)0, dirblksiz, cnp->cn_cred,
|
|
B_CLRBUF, &bp)) != 0)
|
|
goto bad;
|
|
ip->i_size = dirblksiz;
|
|
DIP_ASSIGN(ip, size, dirblksiz);
|
|
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
|
|
uvm_vnp_setsize(tvp, ip->i_size);
|
|
memcpy((void *)bp->b_data, (void *)&dirtemplate, sizeof dirtemplate);
|
|
|
|
/*
|
|
* Directory set up, now install it's entry in the parent directory.
|
|
* We must write out the buffer containing the new directory body
|
|
* before entering the new name in the parent.
|
|
*/
|
|
if ((error = VOP_BWRITE(bp->b_vp, bp)) != 0)
|
|
goto bad;
|
|
if ((error = lfs_update(tvp, NULL, NULL, UPDATE_DIROP)) != 0) {
|
|
goto bad;
|
|
}
|
|
newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK);
|
|
ulfs_makedirentry(ip, cnp, newdir);
|
|
error = ulfs_direnter(dvp, ulr, tvp, newdir, cnp, bp);
|
|
pool_cache_put(ulfs_direct_cache, newdir);
|
|
bad:
|
|
if (error == 0) {
|
|
VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
|
|
} else {
|
|
dp->i_nlink--;
|
|
DIP_ASSIGN(dp, nlink, dp->i_nlink);
|
|
dp->i_flag |= IN_CHANGE;
|
|
/*
|
|
* No need to do an explicit lfs_truncate here, vrele will
|
|
* do this for us because we set the link count to 0.
|
|
*/
|
|
ip->i_nlink = 0;
|
|
DIP_ASSIGN(ip, nlink, 0);
|
|
ip->i_flag |= IN_CHANGE;
|
|
/* If IN_ADIROP, account for it */
|
|
lfs_unmark_vnode(tvp);
|
|
vput(tvp);
|
|
}
|
|
out:
|
|
fstrans_done(dvp->v_mount);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ulfs_rmdir(void *v)
|
|
{
|
|
struct vop_rmdir_args /* {
|
|
struct vnode *a_dvp;
|
|
struct vnode *a_vp;
|
|
struct componentname *a_cnp;
|
|
} */ *ap = v;
|
|
struct vnode *vp, *dvp;
|
|
struct componentname *cnp;
|
|
struct inode *ip, *dp;
|
|
int error;
|
|
struct ulfs_lookup_results *ulr;
|
|
|
|
vp = ap->a_vp;
|
|
dvp = ap->a_dvp;
|
|
cnp = ap->a_cnp;
|
|
ip = VTOI(vp);
|
|
dp = VTOI(dvp);
|
|
|
|
/* XXX should handle this material another way */
|
|
ulr = &dp->i_crap;
|
|
ULFS_CHECK_CRAPCOUNTER(dp);
|
|
|
|
/*
|
|
* No rmdir "." or of mounted directories please.
|
|
*/
|
|
if (dp == ip || vp->v_mountedhere != NULL) {
|
|
if (dp == ip)
|
|
vrele(dvp);
|
|
else
|
|
vput(dvp);
|
|
vput(vp);
|
|
return (EINVAL);
|
|
}
|
|
|
|
fstrans_start(dvp->v_mount, FSTRANS_SHARED);
|
|
|
|
/*
|
|
* Do not remove a directory that is in the process of being renamed.
|
|
* Verify that the directory is empty (and valid). (Rmdir ".." won't
|
|
* be valid since ".." will contain a reference to the current
|
|
* directory and thus be non-empty.)
|
|
*/
|
|
error = 0;
|
|
if (ip->i_nlink != 2 ||
|
|
!ulfs_dirempty(ip, dp->i_number, cnp->cn_cred)) {
|
|
error = ENOTEMPTY;
|
|
goto out;
|
|
}
|
|
if ((dp->i_flags & APPEND) ||
|
|
(ip->i_flags & (IMMUTABLE | APPEND))) {
|
|
error = EPERM;
|
|
goto out;
|
|
}
|
|
/*
|
|
* Delete reference to directory before purging
|
|
* inode. If we crash in between, the directory
|
|
* will be reattached to lost+found,
|
|
*/
|
|
error = ulfs_dirremove(dvp, ulr, ip, cnp->cn_flags, 1);
|
|
if (error) {
|
|
goto out;
|
|
}
|
|
VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
|
|
cache_purge(dvp);
|
|
/*
|
|
* Truncate inode. The only stuff left in the directory is "." and
|
|
* "..". The "." reference is inconsequential since we're quashing
|
|
* it.
|
|
*/
|
|
dp->i_nlink--;
|
|
DIP_ASSIGN(dp, nlink, dp->i_nlink);
|
|
dp->i_flag |= IN_CHANGE;
|
|
ip->i_nlink--;
|
|
DIP_ASSIGN(ip, nlink, ip->i_nlink);
|
|
ip->i_flag |= IN_CHANGE;
|
|
error = lfs_truncate(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
|
|
cache_purge(vp);
|
|
#ifdef LFS_DIRHASH
|
|
if (ip->i_dirhash != NULL)
|
|
ulfsdirhash_free(ip);
|
|
#endif
|
|
out:
|
|
VN_KNOTE(vp, NOTE_DELETE);
|
|
vput(vp);
|
|
fstrans_done(dvp->v_mount);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* symlink -- make a symbolic link
|
|
*/
|
|
int
|
|
ulfs_symlink(void *v)
|
|
{
|
|
struct vop_symlink_args /* {
|
|
struct vnode *a_dvp;
|
|
struct vnode **a_vpp;
|
|
struct componentname *a_cnp;
|
|
struct vattr *a_vap;
|
|
char *a_target;
|
|
} */ *ap = v;
|
|
struct vnode *vp, **vpp;
|
|
struct inode *ip;
|
|
int len, error;
|
|
struct ulfs_lookup_results *ulr;
|
|
|
|
vpp = ap->a_vpp;
|
|
|
|
/* XXX should handle this material another way */
|
|
ulr = &VTOI(ap->a_dvp)->i_crap;
|
|
ULFS_CHECK_CRAPCOUNTER(VTOI(ap->a_dvp));
|
|
|
|
fstrans_start(ap->a_dvp->v_mount, FSTRANS_SHARED);
|
|
error = ulfs_makeinode(LFS_IFLNK | ap->a_vap->va_mode, ap->a_dvp, ulr,
|
|
vpp, ap->a_cnp);
|
|
if (error)
|
|
goto out;
|
|
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
|
|
vp = *vpp;
|
|
len = strlen(ap->a_target);
|
|
ip = VTOI(vp);
|
|
if (len < ip->i_lfs->um_maxsymlinklen) {
|
|
memcpy((char *)SHORTLINK(ip), ap->a_target, len);
|
|
ip->i_size = len;
|
|
DIP_ASSIGN(ip, size, len);
|
|
uvm_vnp_setsize(vp, ip->i_size);
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
if (vp->v_mount->mnt_flag & MNT_RELATIME)
|
|
ip->i_flag |= IN_ACCESS;
|
|
} else
|
|
error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
|
|
UIO_SYSSPACE, IO_NODELOCKED | IO_JOURNALLOCKED,
|
|
ap->a_cnp->cn_cred, NULL, NULL);
|
|
if (error)
|
|
vput(vp);
|
|
out:
|
|
fstrans_done(ap->a_dvp->v_mount);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Vnode op for reading directories.
|
|
*
|
|
* This routine handles converting from the on-disk directory format
|
|
* "struct lfs_direct" to the in-memory format "struct dirent" as well as
|
|
* byte swapping the entries if necessary.
|
|
*/
|
|
int
|
|
ulfs_readdir(void *v)
|
|
{
|
|
struct vop_readdir_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
kauth_cred_t a_cred;
|
|
int *a_eofflag;
|
|
off_t **a_cookies;
|
|
int *ncookies;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct lfs_direct *cdp, *ecdp;
|
|
struct dirent *ndp;
|
|
char *cdbuf, *ndbuf, *endp;
|
|
struct uio auio, *uio;
|
|
struct iovec aiov;
|
|
int error;
|
|
size_t count, ccount, rcount, cdbufsz, ndbufsz;
|
|
off_t off, *ccp;
|
|
off_t startoff;
|
|
size_t skipbytes;
|
|
struct ulfsmount *ump = VFSTOULFS(vp->v_mount);
|
|
struct lfs *fs = ump->um_lfs;
|
|
int nswap = ULFS_MPNEEDSWAP(fs);
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
|
int needswap = fs->um_maxsymlinklen <= 0 && nswap == 0;
|
|
#else
|
|
int needswap = fs->um_maxsymlinklen <= 0 && nswap != 0;
|
|
#endif
|
|
uio = ap->a_uio;
|
|
count = uio->uio_resid;
|
|
rcount = count - ((uio->uio_offset + count) & (fs->um_dirblksiz - 1));
|
|
|
|
if (rcount < _DIRENT_MINSIZE(cdp) || count < _DIRENT_MINSIZE(ndp))
|
|
return EINVAL;
|
|
|
|
startoff = uio->uio_offset & ~(fs->um_dirblksiz - 1);
|
|
skipbytes = uio->uio_offset - startoff;
|
|
rcount += skipbytes;
|
|
|
|
auio.uio_iov = &aiov;
|
|
auio.uio_iovcnt = 1;
|
|
auio.uio_offset = startoff;
|
|
auio.uio_resid = rcount;
|
|
UIO_SETUP_SYSSPACE(&auio);
|
|
auio.uio_rw = UIO_READ;
|
|
cdbufsz = rcount;
|
|
cdbuf = kmem_alloc(cdbufsz, KM_SLEEP);
|
|
aiov.iov_base = cdbuf;
|
|
aiov.iov_len = rcount;
|
|
error = VOP_READ(vp, &auio, 0, ap->a_cred);
|
|
if (error != 0) {
|
|
kmem_free(cdbuf, cdbufsz);
|
|
return error;
|
|
}
|
|
|
|
rcount -= auio.uio_resid;
|
|
|
|
cdp = (struct lfs_direct *)(void *)cdbuf;
|
|
ecdp = (struct lfs_direct *)(void *)&cdbuf[rcount];
|
|
|
|
ndbufsz = count;
|
|
ndbuf = kmem_alloc(ndbufsz, KM_SLEEP);
|
|
ndp = (struct dirent *)(void *)ndbuf;
|
|
endp = &ndbuf[count];
|
|
|
|
off = uio->uio_offset;
|
|
if (ap->a_cookies) {
|
|
ccount = rcount / _DIRENT_RECLEN(cdp, 1);
|
|
ccp = *(ap->a_cookies) = malloc(ccount * sizeof(*ccp),
|
|
M_TEMP, M_WAITOK);
|
|
} else {
|
|
/* XXX: GCC */
|
|
ccount = 0;
|
|
ccp = NULL;
|
|
}
|
|
|
|
while (cdp < ecdp) {
|
|
cdp->d_reclen = ulfs_rw16(cdp->d_reclen, nswap);
|
|
if (skipbytes > 0) {
|
|
if (cdp->d_reclen <= skipbytes) {
|
|
skipbytes -= cdp->d_reclen;
|
|
cdp = _DIRENT_NEXT(cdp);
|
|
continue;
|
|
}
|
|
/*
|
|
* invalid cookie.
|
|
*/
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
if (cdp->d_reclen == 0) {
|
|
struct dirent *ondp = ndp;
|
|
ndp->d_reclen = _DIRENT_MINSIZE(ndp);
|
|
ndp = _DIRENT_NEXT(ndp);
|
|
ondp->d_reclen = 0;
|
|
cdp = ecdp;
|
|
break;
|
|
}
|
|
if (needswap) {
|
|
ndp->d_type = cdp->d_namlen;
|
|
ndp->d_namlen = cdp->d_type;
|
|
} else {
|
|
ndp->d_type = cdp->d_type;
|
|
ndp->d_namlen = cdp->d_namlen;
|
|
}
|
|
ndp->d_reclen = _DIRENT_RECLEN(ndp, ndp->d_namlen);
|
|
if ((char *)(void *)ndp + ndp->d_reclen +
|
|
_DIRENT_MINSIZE(ndp) > endp)
|
|
break;
|
|
ndp->d_fileno = ulfs_rw32(cdp->d_ino, nswap);
|
|
(void)memcpy(ndp->d_name, cdp->d_name, ndp->d_namlen);
|
|
memset(&ndp->d_name[ndp->d_namlen], 0,
|
|
ndp->d_reclen - _DIRENT_NAMEOFF(ndp) - ndp->d_namlen);
|
|
off += cdp->d_reclen;
|
|
if (ap->a_cookies) {
|
|
KASSERT(ccp - *(ap->a_cookies) < ccount);
|
|
*(ccp++) = off;
|
|
}
|
|
ndp = _DIRENT_NEXT(ndp);
|
|
cdp = _DIRENT_NEXT(cdp);
|
|
}
|
|
|
|
count = ((char *)(void *)ndp - ndbuf);
|
|
error = uiomove(ndbuf, count, uio);
|
|
out:
|
|
if (ap->a_cookies) {
|
|
if (error) {
|
|
free(*(ap->a_cookies), M_TEMP);
|
|
*(ap->a_cookies) = NULL;
|
|
*(ap->a_ncookies) = 0;
|
|
} else {
|
|
*ap->a_ncookies = ccp - *(ap->a_cookies);
|
|
}
|
|
}
|
|
uio->uio_offset = off;
|
|
kmem_free(ndbuf, ndbufsz);
|
|
kmem_free(cdbuf, cdbufsz);
|
|
*ap->a_eofflag = VTOI(vp)->i_size <= uio->uio_offset;
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Return target name of a symbolic link
|
|
*/
|
|
int
|
|
ulfs_readlink(void *v)
|
|
{
|
|
struct vop_readlink_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
kauth_cred_t a_cred;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct inode *ip = VTOI(vp);
|
|
struct ulfsmount *ump = VFSTOULFS(vp->v_mount);
|
|
struct lfs *fs = ump->um_lfs;
|
|
int isize;
|
|
|
|
isize = ip->i_size;
|
|
if (isize < fs->um_maxsymlinklen ||
|
|
(fs->um_maxsymlinklen == 0 && DIP(ip, blocks) == 0)) {
|
|
uiomove((char *)SHORTLINK(ip), isize, ap->a_uio);
|
|
return (0);
|
|
}
|
|
return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
|
|
}
|
|
|
|
/*
|
|
* Print out the contents of an inode.
|
|
*/
|
|
int
|
|
ulfs_print(void *v)
|
|
{
|
|
struct vop_print_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *ap = v;
|
|
struct vnode *vp;
|
|
struct inode *ip;
|
|
|
|
vp = ap->a_vp;
|
|
ip = VTOI(vp);
|
|
printf("tag VT_ULFS, ino %llu, on dev %llu, %llu",
|
|
(unsigned long long)ip->i_number,
|
|
(unsigned long long)major(ip->i_dev),
|
|
(unsigned long long)minor(ip->i_dev));
|
|
printf(" flags 0x%x, nlink %d\n",
|
|
ip->i_flag, ip->i_nlink);
|
|
printf("\tmode 0%o, owner %d, group %d, size %qd",
|
|
ip->i_mode, ip->i_uid, ip->i_gid,
|
|
(long long)ip->i_size);
|
|
if (vp->v_type == VFIFO)
|
|
VOCALL(fifo_vnodeop_p, VOFFSET(vop_print), v);
|
|
printf("\n");
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Read wrapper for special devices.
|
|
*/
|
|
int
|
|
ulfsspec_read(void *v)
|
|
{
|
|
struct vop_read_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
int a_ioflag;
|
|
kauth_cred_t a_cred;
|
|
} */ *ap = v;
|
|
|
|
/*
|
|
* Set access flag.
|
|
*/
|
|
if ((ap->a_vp->v_mount->mnt_flag & MNT_NODEVMTIME) == 0)
|
|
VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
|
|
return (VOCALL (spec_vnodeop_p, VOFFSET(vop_read), ap));
|
|
}
|
|
|
|
/*
|
|
* Write wrapper for special devices.
|
|
*/
|
|
int
|
|
ulfsspec_write(void *v)
|
|
{
|
|
struct vop_write_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
int a_ioflag;
|
|
kauth_cred_t a_cred;
|
|
} */ *ap = v;
|
|
|
|
/*
|
|
* Set update and change flags.
|
|
*/
|
|
if ((ap->a_vp->v_mount->mnt_flag & MNT_NODEVMTIME) == 0)
|
|
VTOI(ap->a_vp)->i_flag |= IN_MODIFY;
|
|
return (VOCALL (spec_vnodeop_p, VOFFSET(vop_write), ap));
|
|
}
|
|
|
|
/*
|
|
* Read wrapper for fifo's
|
|
*/
|
|
int
|
|
ulfsfifo_read(void *v)
|
|
{
|
|
struct vop_read_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
int a_ioflag;
|
|
kauth_cred_t a_cred;
|
|
} */ *ap = v;
|
|
|
|
/*
|
|
* Set access flag.
|
|
*/
|
|
VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
|
|
return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_read), ap));
|
|
}
|
|
|
|
/*
|
|
* Write wrapper for fifo's.
|
|
*/
|
|
int
|
|
ulfsfifo_write(void *v)
|
|
{
|
|
struct vop_write_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
int a_ioflag;
|
|
kauth_cred_t a_cred;
|
|
} */ *ap = v;
|
|
|
|
/*
|
|
* Set update and change flags.
|
|
*/
|
|
VTOI(ap->a_vp)->i_flag |= IN_MODIFY;
|
|
return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_write), ap));
|
|
}
|
|
|
|
/*
|
|
* Return POSIX pathconf information applicable to ulfs filesystems.
|
|
*/
|
|
int
|
|
ulfs_pathconf(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_NAME_MAX:
|
|
*ap->a_retval = LFS_MAXNAMLEN;
|
|
return (0);
|
|
case _PC_PATH_MAX:
|
|
*ap->a_retval = PATH_MAX;
|
|
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_NO_TRUNC:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
case _PC_SYNC_IO:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
case _PC_FILESIZEBITS:
|
|
*ap->a_retval = 42;
|
|
return (0);
|
|
case _PC_SYMLINK_MAX:
|
|
*ap->a_retval = MAXPATHLEN;
|
|
return (0);
|
|
case _PC_2_SYMLINKS:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/*
|
|
* Advisory record locking support
|
|
*/
|
|
int
|
|
ulfs_advlock(void *v)
|
|
{
|
|
struct vop_advlock_args /* {
|
|
struct vnode *a_vp;
|
|
void * a_id;
|
|
int a_op;
|
|
struct flock *a_fl;
|
|
int a_flags;
|
|
} */ *ap = v;
|
|
struct inode *ip;
|
|
|
|
ip = VTOI(ap->a_vp);
|
|
return lf_advlock(ap, &ip->i_lockf, ip->i_size);
|
|
}
|
|
|
|
/*
|
|
* Initialize the vnode associated with a new inode, handle aliased
|
|
* vnodes.
|
|
*/
|
|
void
|
|
ulfs_vinit(struct mount *mntp, int (**specops)(void *), int (**fifoops)(void *),
|
|
struct vnode **vpp)
|
|
{
|
|
struct timeval tv;
|
|
struct inode *ip;
|
|
struct vnode *vp;
|
|
dev_t rdev;
|
|
struct ulfsmount *ump;
|
|
|
|
vp = *vpp;
|
|
ip = VTOI(vp);
|
|
switch(vp->v_type = IFTOVT(ip->i_mode)) {
|
|
case VCHR:
|
|
case VBLK:
|
|
vp->v_op = specops;
|
|
ump = ip->i_ump;
|
|
if (ump->um_fstype == ULFS1)
|
|
rdev = (dev_t)ulfs_rw32(ip->i_ffs1_rdev,
|
|
ULFS_MPNEEDSWAP(ump->um_lfs));
|
|
else
|
|
rdev = (dev_t)ulfs_rw64(ip->i_ffs2_rdev,
|
|
ULFS_MPNEEDSWAP(ump->um_lfs));
|
|
spec_node_init(vp, rdev);
|
|
break;
|
|
case VFIFO:
|
|
vp->v_op = fifoops;
|
|
break;
|
|
case VNON:
|
|
case VBAD:
|
|
case VSOCK:
|
|
case VLNK:
|
|
case VDIR:
|
|
case VREG:
|
|
break;
|
|
}
|
|
if (ip->i_number == ULFS_ROOTINO)
|
|
vp->v_vflag |= VV_ROOT;
|
|
/*
|
|
* Initialize modrev times
|
|
*/
|
|
getmicrouptime(&tv);
|
|
ip->i_modrev = (uint64_t)(uint)tv.tv_sec << 32
|
|
| tv.tv_usec * 4294u;
|
|
*vpp = vp;
|
|
}
|
|
|
|
/*
|
|
* Allocate a new inode.
|
|
*/
|
|
int
|
|
ulfs_makeinode(int mode, struct vnode *dvp, const struct ulfs_lookup_results *ulr,
|
|
struct vnode **vpp, struct componentname *cnp)
|
|
{
|
|
struct inode *ip, *pdir;
|
|
struct lfs_direct *newdir;
|
|
struct vnode *tvp;
|
|
int error;
|
|
|
|
pdir = VTOI(dvp);
|
|
|
|
if ((mode & LFS_IFMT) == 0)
|
|
mode |= LFS_IFREG;
|
|
|
|
if ((error = lfs_valloc(dvp, mode, cnp->cn_cred, vpp)) != 0) {
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
tvp = *vpp;
|
|
ip = VTOI(tvp);
|
|
ip->i_gid = pdir->i_gid;
|
|
DIP_ASSIGN(ip, gid, ip->i_gid);
|
|
ip->i_uid = kauth_cred_geteuid(cnp->cn_cred);
|
|
DIP_ASSIGN(ip, uid, ip->i_uid);
|
|
#if defined(LFS_QUOTA) || defined(LFS_QUOTA2)
|
|
if ((error = lfs_chkiq(ip, 1, cnp->cn_cred, 0))) {
|
|
lfs_vfree(tvp, ip->i_number, mode);
|
|
vput(tvp);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
#endif
|
|
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
|
|
ip->i_mode = mode;
|
|
DIP_ASSIGN(ip, mode, mode);
|
|
tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
|
|
ip->i_nlink = 1;
|
|
DIP_ASSIGN(ip, nlink, 1);
|
|
|
|
/* Authorize setting SGID if needed. */
|
|
if (ip->i_mode & ISGID) {
|
|
error = kauth_authorize_vnode(cnp->cn_cred, KAUTH_VNODE_WRITE_SECURITY,
|
|
tvp, NULL, genfs_can_chmod(tvp->v_type, cnp->cn_cred, ip->i_uid,
|
|
ip->i_gid, mode));
|
|
if (error) {
|
|
ip->i_mode &= ~ISGID;
|
|
DIP_ASSIGN(ip, mode, ip->i_mode);
|
|
}
|
|
}
|
|
|
|
if (cnp->cn_flags & ISWHITEOUT) {
|
|
ip->i_flags |= UF_OPAQUE;
|
|
DIP_ASSIGN(ip, flags, ip->i_flags);
|
|
}
|
|
|
|
/*
|
|
* Make sure inode goes to disk before directory entry.
|
|
*/
|
|
if ((error = lfs_update(tvp, NULL, NULL, UPDATE_DIROP)) != 0)
|
|
goto bad;
|
|
newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK);
|
|
ulfs_makedirentry(ip, cnp, newdir);
|
|
error = ulfs_direnter(dvp, ulr, tvp, newdir, cnp, NULL);
|
|
pool_cache_put(ulfs_direct_cache, newdir);
|
|
if (error)
|
|
goto bad;
|
|
vput(dvp);
|
|
*vpp = tvp;
|
|
return (0);
|
|
|
|
bad:
|
|
/*
|
|
* Write error occurred trying to update the inode
|
|
* or the directory so must deallocate the inode.
|
|
*/
|
|
ip->i_nlink = 0;
|
|
DIP_ASSIGN(ip, nlink, 0);
|
|
ip->i_flag |= IN_CHANGE;
|
|
/* If IN_ADIROP, account for it */
|
|
lfs_unmark_vnode(tvp);
|
|
tvp->v_type = VNON; /* explodes later if VBLK */
|
|
vput(tvp);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Allocate len bytes at offset off.
|
|
*/
|
|
int
|
|
ulfs_gop_alloc(struct vnode *vp, off_t off, off_t len, int flags,
|
|
kauth_cred_t cred)
|
|
{
|
|
struct inode *ip = VTOI(vp);
|
|
int error, delta, bshift, bsize;
|
|
UVMHIST_FUNC("ulfs_gop_alloc"); UVMHIST_CALLED(ubchist);
|
|
|
|
error = 0;
|
|
bshift = vp->v_mount->mnt_fs_bshift;
|
|
bsize = 1 << bshift;
|
|
|
|
delta = off & (bsize - 1);
|
|
off -= delta;
|
|
len += delta;
|
|
|
|
while (len > 0) {
|
|
bsize = MIN(bsize, len);
|
|
|
|
error = lfs_balloc(vp, off, bsize, cred, flags, NULL);
|
|
if (error) {
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* increase file size now, lfs_balloc() requires that
|
|
* EOF be up-to-date before each call.
|
|
*/
|
|
|
|
if (ip->i_size < off + bsize) {
|
|
UVMHIST_LOG(ubchist, "vp %p old 0x%x new 0x%x",
|
|
vp, ip->i_size, off + bsize, 0);
|
|
ip->i_size = off + bsize;
|
|
DIP_ASSIGN(ip, size, ip->i_size);
|
|
}
|
|
|
|
off += bsize;
|
|
len -= bsize;
|
|
}
|
|
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
void
|
|
ulfs_gop_markupdate(struct vnode *vp, int flags)
|
|
{
|
|
u_int32_t mask = 0;
|
|
|
|
if ((flags & GOP_UPDATE_ACCESSED) != 0) {
|
|
mask = IN_ACCESS;
|
|
}
|
|
if ((flags & GOP_UPDATE_MODIFIED) != 0) {
|
|
if (vp->v_type == VREG) {
|
|
mask |= IN_CHANGE | IN_UPDATE;
|
|
} else {
|
|
mask |= IN_MODIFY;
|
|
}
|
|
}
|
|
if (mask) {
|
|
struct inode *ip = VTOI(vp);
|
|
|
|
ip->i_flag |= mask;
|
|
}
|
|
}
|