799 lines
19 KiB
C
799 lines
19 KiB
C
/* $OpenBSD: ntfs_vfsops.c,v 1.65 2022/01/11 03:13:59 jsg Exp $ */
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/* $NetBSD: ntfs_vfsops.c,v 1.7 2003/04/24 07:50:19 christos Exp $ */
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/*-
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* Copyright (c) 1998, 1999 Semen Ustimenko
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* Id: ntfs_vfsops.c,v 1.7 1999/05/31 11:28:30 phk Exp
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*/
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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/proc.h>
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#include <sys/kernel.h>
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#include <sys/vnode.h>
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#include <sys/lock.h>
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#include <sys/mount.h>
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#include <sys/buf.h>
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#include <sys/disk.h>
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#include <sys/fcntl.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <sys/specdev.h>
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/*#define NTFS_DEBUG 1*/
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#include <ntfs/ntfs.h>
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#include <ntfs/ntfs_inode.h>
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#include <ntfs/ntfs_subr.h>
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#include <ntfs/ntfs_vfsops.h>
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#include <ntfs/ntfs_ihash.h>
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int ntfs_mount(struct mount *, const char *, void *,
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struct nameidata *, struct proc *);
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int ntfs_quotactl(struct mount *, int, uid_t, caddr_t,
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struct proc *);
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int ntfs_root(struct mount *, struct vnode **);
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int ntfs_start(struct mount *, int, struct proc *);
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int ntfs_statfs(struct mount *, struct statfs *,
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struct proc *);
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int ntfs_sync(struct mount *, int, int, struct ucred *,
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struct proc *);
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int ntfs_unmount(struct mount *, int, struct proc *);
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int ntfs_vget(struct mount *mp, ino_t ino,
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struct vnode **vpp);
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int ntfs_mountfs(struct vnode *, struct mount *,
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struct ntfs_args *, struct proc *);
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int ntfs_vptofh(struct vnode *, struct fid *);
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int ntfs_init(struct vfsconf *);
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int ntfs_fhtovp(struct mount *, struct fid *,
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struct vnode **);
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int ntfs_checkexp(struct mount *, struct mbuf *,
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int *, struct ucred **);
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int ntfs_sysctl(int *, u_int, void *, size_t *, void *,
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size_t, struct proc *);
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/*
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* Verify a remote client has export rights and return these rights via.
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* exflagsp and credanonp.
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*/
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int
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ntfs_checkexp(struct mount *mp, struct mbuf *nam, int *exflagsp,
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struct ucred **credanonp)
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{
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struct netcred *np;
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struct ntfsmount *ntm = VFSTONTFS(mp);
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/*
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* Get the export permission structure for this <mp, client> tuple.
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*/
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np = vfs_export_lookup(mp, &ntm->ntm_export, nam);
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if (np == NULL)
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return (EACCES);
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*exflagsp = np->netc_exflags;
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*credanonp = &np->netc_anon;
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return (0);
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}
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int
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ntfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
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size_t newlen, struct proc *p)
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{
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return (EINVAL);
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}
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int
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ntfs_init(struct vfsconf *vcp)
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{
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return 0;
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}
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int
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ntfs_mount(struct mount *mp, const char *path, void *data,
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struct nameidata *ndp, struct proc *p)
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{
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int err = 0;
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struct vnode *devvp;
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struct ntfs_args *args = data;
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char fname[MNAMELEN];
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char fspec[MNAMELEN];
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ntfs_nthashinit();
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/*
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***
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* Mounting non-root file system or updating a file system
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***
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*/
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/*
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* If updating, check whether changing from read-only to
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* read/write; if there is no device name, that's all we do.
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*/
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if (mp->mnt_flag & MNT_UPDATE) {
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/* if not updating name...*/
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if (args && args->fspec == NULL) {
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/*
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* Process export requests. Jumping to "success"
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* will return the vfs_export() error code.
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*/
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struct ntfsmount *ntm = VFSTONTFS(mp);
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err = vfs_export(mp, &ntm->ntm_export, &args->export_info);
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goto success;
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}
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printf("ntfs_mount(): MNT_UPDATE not supported\n");
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err = EINVAL;
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goto error_1;
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}
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/*
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* Not an update, or updating the name: look up the name
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* and verify that it refers to a sensible block device.
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*/
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err = copyinstr(args->fspec, fspec, sizeof(fspec), NULL);
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if (err)
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goto error_1;
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if (disk_map(fspec, fname, sizeof(fname), DM_OPENBLCK) == -1)
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bcopy(fspec, fname, sizeof(fname));
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NDINIT(ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, fname, p);
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err = namei(ndp);
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if (err) {
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/* can't get devvp!*/
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goto error_1;
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}
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devvp = ndp->ni_vp;
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if (devvp->v_type != VBLK) {
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err = ENOTBLK;
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goto error_2;
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}
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if (major(devvp->v_rdev) >= nblkdev) {
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err = ENXIO;
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goto error_2;
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}
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if (mp->mnt_flag & MNT_UPDATE) {
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#if 0
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/*
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********************
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* UPDATE
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********************
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*/
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if (devvp != ntmp->um_devvp)
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err = EINVAL; /* needs translation */
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else
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vrele(devvp);
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/*
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* Update device name only on success
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*/
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if( !err) {
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err = set_statfs_info(NULL, UIO_USERSPACE, args->fspec,
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UIO_USERSPACE, mp, p);
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}
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#endif
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} else {
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/*
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********************
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* NEW MOUNT
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********************
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*/
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/*
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* Since this is a new mount, we want the names for
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* the device and the mount point copied in. If an
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* error occurs, the mountpoint is discarded by the
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* upper level code.
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*/
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/* Save "last mounted on" info for mount point (NULL pad)*/
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bzero(mp->mnt_stat.f_mntonname, MNAMELEN);
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strlcpy(mp->mnt_stat.f_mntonname, path, MNAMELEN);
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bzero(mp->mnt_stat.f_mntfromname, MNAMELEN);
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strlcpy(mp->mnt_stat.f_mntfromname, fname, MNAMELEN);
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bzero(mp->mnt_stat.f_mntfromspec, MNAMELEN);
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strlcpy(mp->mnt_stat.f_mntfromspec, fspec, MNAMELEN);
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bcopy(args, &mp->mnt_stat.mount_info.ntfs_args, sizeof(*args));
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if ( !err) {
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err = ntfs_mountfs(devvp, mp, args, p);
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}
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}
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if (err) {
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goto error_2;
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}
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/*
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* Initialize FS stat information in mount struct; uses both
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* mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
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*
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* This code is common to root and non-root mounts
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*/
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(void)VFS_STATFS(mp, &mp->mnt_stat, p);
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goto success;
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error_2: /* error with devvp held*/
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/* release devvp before failing*/
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vrele(devvp);
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error_1: /* no state to back out*/
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success:
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return(err);
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}
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/*
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* Common code for mount and mountroot
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*/
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int
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ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp,
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struct proc *p)
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{
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struct buf *bp;
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struct ntfsmount *ntmp = NULL;
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dev_t dev = devvp->v_rdev;
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int error, ncount, i;
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struct vnode *vp;
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/*
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* Disallow multiple mounts of the same device.
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* Disallow mounting of a device that is currently in use
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* (except for root, which might share swap device for miniroot).
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* Flush out any old buffers remaining from a previous use.
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*/
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error = vfs_mountedon(devvp);
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if (error)
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return (error);
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ncount = vcount(devvp);
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if (ncount > 1 && devvp != rootvp)
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return (EBUSY);
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vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
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error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, INFSLP);
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VOP_UNLOCK(devvp);
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if (error)
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return (error);
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error = VOP_OPEN(devvp, FREAD, FSCRED, p);
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if (error)
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return (error);
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bp = NULL;
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error = bread(devvp, BBLOCK, BBSIZE, &bp);
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if (error)
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goto out;
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ntmp = malloc(sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
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bcopy(bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile));
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brelse(bp);
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bp = NULL;
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if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
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error = EINVAL;
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DPRINTF("ntfs_mountfs: invalid boot block\n");
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goto out;
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}
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{
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int8_t cpr = ntmp->ntm_mftrecsz;
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if( cpr > 0 )
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ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
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else
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ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
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}
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DPRINTF("ntfs_mountfs(): bps: %u, spc: %u, media: %x, "
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"mftrecsz: %u (%u sects)\n", ntmp->ntm_bps, ntmp->ntm_spc,
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ntmp->ntm_bootfile.bf_media, ntmp->ntm_mftrecsz,
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ntmp->ntm_bpmftrec);
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DPRINTF("ntfs_mountfs(): mftcn: 0x%llx|0x%llx\n",
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ntmp->ntm_mftcn, ntmp->ntm_mftmirrcn);
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ntmp->ntm_mountp = mp;
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ntmp->ntm_dev = dev;
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ntmp->ntm_devvp = devvp;
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ntmp->ntm_uid = argsp->uid;
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ntmp->ntm_gid = argsp->gid;
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ntmp->ntm_mode = argsp->mode;
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ntmp->ntm_flag = argsp->flag;
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mp->mnt_data = ntmp;
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TAILQ_INIT(&ntmp->ntm_ntnodeq);
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|
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/* set file name encode/decode hooks XXX utf-8 only for now */
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ntmp->ntm_wget = ntfs_utf8_wget;
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ntmp->ntm_wput = ntfs_utf8_wput;
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ntmp->ntm_wcmp = ntfs_utf8_wcmp;
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|
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DPRINTF("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
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(ntmp->ntm_flag & NTFS_MFLAG_CASEINS) ? "insens." : "sens.",
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(ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES) ? " allnames," : "",
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ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode);
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|
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/*
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* We read in some system nodes to do not allow
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* reclaim them and to have everytime access to them.
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*/
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{
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int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
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for (i=0; i<3; i++) {
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error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]]));
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if(error)
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goto out1;
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ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM;
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vref(ntmp->ntm_sysvn[pi[i]]);
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vput(ntmp->ntm_sysvn[pi[i]]);
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}
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}
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|
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/* read the Unicode lowercase --> uppercase translation table,
|
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* if necessary */
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if ((error = ntfs_toupper_use(mp, ntmp, p)))
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goto out1;
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|
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/*
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* Scan $BitMap and count free clusters
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*/
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error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
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if(error)
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goto out1;
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|
|
/*
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* Read and translate to internal format attribute
|
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* definition file.
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*/
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{
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int num,j;
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struct attrdef ad;
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|
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/* Open $AttrDef */
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error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp );
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if(error)
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goto out1;
|
|
|
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/* Count valid entries */
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for(num = 0; ; num++) {
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error = ntfs_readattr(ntmp, VTONT(vp),
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NTFS_A_DATA, NULL, num * sizeof(ad), sizeof(ad),
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&ad, NULL);
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if (error)
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goto out1;
|
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if (ad.ad_name[0] == 0)
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break;
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}
|
|
|
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/* Alloc memory for attribute definitions */
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ntmp->ntm_ad = mallocarray(num, sizeof(struct ntvattrdef),
|
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M_NTFSMNT, M_WAITOK);
|
|
|
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ntmp->ntm_adnum = num;
|
|
|
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/* Read them and translate */
|
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for(i = 0; i < num; i++){
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error = ntfs_readattr(ntmp, VTONT(vp),
|
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NTFS_A_DATA, NULL, i * sizeof(ad), sizeof(ad),
|
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&ad, NULL);
|
|
if (error)
|
|
goto out1;
|
|
j = 0;
|
|
do {
|
|
ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
|
|
} while(ad.ad_name[j++]);
|
|
ntmp->ntm_ad[i].ad_namelen = j - 1;
|
|
ntmp->ntm_ad[i].ad_type = ad.ad_type;
|
|
}
|
|
|
|
vput(vp);
|
|
}
|
|
|
|
mp->mnt_stat.f_fsid.val[0] = dev;
|
|
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
|
|
mp->mnt_stat.f_namemax = NTFS_MAXFILENAME;
|
|
mp->mnt_flag |= MNT_LOCAL;
|
|
devvp->v_specmountpoint = mp;
|
|
return (0);
|
|
|
|
out1:
|
|
for (i = 0; i < NTFS_SYSNODESNUM; i++)
|
|
if (ntmp->ntm_sysvn[i])
|
|
vrele(ntmp->ntm_sysvn[i]);
|
|
|
|
if (vflush(mp,NULLVP,0))
|
|
DPRINTF("ntfs_mountfs: vflush failed\n");
|
|
|
|
out:
|
|
if (devvp->v_specinfo)
|
|
devvp->v_specmountpoint = NULL;
|
|
if (bp)
|
|
brelse(bp);
|
|
|
|
if (ntmp != NULL) {
|
|
if (ntmp->ntm_ad != NULL)
|
|
free(ntmp->ntm_ad, M_NTFSMNT, 0);
|
|
free(ntmp, M_NTFSMNT, 0);
|
|
mp->mnt_data = NULL;
|
|
}
|
|
|
|
/* lock the device vnode before calling VOP_CLOSE() */
|
|
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
|
(void)VOP_CLOSE(devvp, FREAD, NOCRED, p);
|
|
VOP_UNLOCK(devvp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ntfs_start(struct mount *mp, int flags, struct proc *p)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ntfs_unmount(struct mount *mp, int mntflags, struct proc *p)
|
|
{
|
|
struct ntfsmount *ntmp;
|
|
int error, flags, i;
|
|
|
|
DPRINTF("ntfs_unmount: unmounting...\n");
|
|
ntmp = VFSTONTFS(mp);
|
|
|
|
flags = 0;
|
|
if(mntflags & MNT_FORCE)
|
|
flags |= FORCECLOSE;
|
|
|
|
DPRINTF("ntfs_unmount: vflushing...\n");
|
|
error = vflush(mp,NULLVP,flags | SKIPSYSTEM);
|
|
if (error) {
|
|
DPRINTF("ntfs_unmount: vflush failed: %d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
/* Check if system vnodes are still referenced */
|
|
for(i=0;i<NTFS_SYSNODESNUM;i++) {
|
|
if(((mntflags & MNT_FORCE) == 0) && (ntmp->ntm_sysvn[i] &&
|
|
ntmp->ntm_sysvn[i]->v_usecount > 1))
|
|
return (EBUSY);
|
|
}
|
|
|
|
/* Dereference all system vnodes */
|
|
for(i=0;i<NTFS_SYSNODESNUM;i++)
|
|
if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
|
|
|
|
/* vflush system vnodes */
|
|
error = vflush(mp,NULLVP,flags);
|
|
if (error) {
|
|
/* XXX should this be panic() ? */
|
|
printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
|
|
}
|
|
|
|
/* Check if the type of device node isn't VBAD before
|
|
* touching v_specinfo. If the device vnode is revoked, the
|
|
* field is NULL and touching it causes null pointer dereference.
|
|
*/
|
|
if (ntmp->ntm_devvp->v_type != VBAD)
|
|
ntmp->ntm_devvp->v_specmountpoint = NULL;
|
|
|
|
/* lock the device vnode before calling VOP_CLOSE() */
|
|
vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
|
|
vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, INFSLP);
|
|
(void)VOP_CLOSE(ntmp->ntm_devvp, FREAD, NOCRED, p);
|
|
vput(ntmp->ntm_devvp);
|
|
|
|
/* free the toupper table, if this has been last mounted ntfs volume */
|
|
ntfs_toupper_unuse(p);
|
|
|
|
DPRINTF("ntfs_unmount: freeing memory...\n");
|
|
free(ntmp->ntm_ad, M_NTFSMNT, 0);
|
|
free(ntmp, M_NTFSMNT, 0);
|
|
mp->mnt_data = NULL;
|
|
mp->mnt_flag &= ~MNT_LOCAL;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ntfs_root(struct mount *mp, struct vnode **vpp)
|
|
{
|
|
struct vnode *nvp;
|
|
int error = 0;
|
|
|
|
DPRINTF("ntfs_root(): sysvn: %p\n",
|
|
VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]);
|
|
error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp);
|
|
if(error) {
|
|
printf("ntfs_root: VFS_VGET failed: %d\n",error);
|
|
return (error);
|
|
}
|
|
|
|
*vpp = nvp;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Do operations associated with quotas, not supported
|
|
*/
|
|
int
|
|
ntfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
|
|
struct proc *p)
|
|
{
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
int
|
|
ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep)
|
|
{
|
|
struct vnode *vp;
|
|
u_int8_t *tmp;
|
|
int j, error;
|
|
cn_t cfree = 0;
|
|
uint64_t bmsize, offset;
|
|
size_t chunksize, i;
|
|
|
|
vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
|
|
|
|
bmsize = VTOF(vp)->f_size;
|
|
|
|
if (bmsize > 1024 * 1024)
|
|
chunksize = 1024 * 1024;
|
|
else
|
|
chunksize = bmsize;
|
|
|
|
tmp = malloc(chunksize, M_TEMP, M_WAITOK);
|
|
|
|
for (offset = 0; offset < bmsize; offset += chunksize) {
|
|
if (chunksize > bmsize - offset)
|
|
chunksize = bmsize - offset;
|
|
|
|
error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
|
|
offset, chunksize, tmp, NULL);
|
|
if (error)
|
|
goto out;
|
|
|
|
for (i = 0; i < chunksize; i++)
|
|
for (j = 0; j < 8; j++)
|
|
if (~tmp[i] & (1 << j))
|
|
cfree++;
|
|
}
|
|
|
|
*cfreep = cfree;
|
|
|
|
out:
|
|
free(tmp, M_TEMP, 0);
|
|
return(error);
|
|
}
|
|
|
|
int
|
|
ntfs_statfs(struct mount *mp, struct statfs *sbp, struct proc *p)
|
|
{
|
|
struct ntfsmount *ntmp = VFSTONTFS(mp);
|
|
u_int64_t mftallocated;
|
|
|
|
DPRINTF("ntfs_statfs():\n");
|
|
|
|
mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
|
|
|
|
sbp->f_bsize = ntmp->ntm_bps;
|
|
sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
|
|
sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
|
|
sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
|
|
sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec;
|
|
sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
|
|
sbp->f_ffree;
|
|
copy_statfs_info(sbp, mp);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ntfs_sync(struct mount *mp, int waitfor, int stall, struct ucred *cred, struct proc *p)
|
|
{
|
|
/*DPRINTF("ntfs_sync():\n");*/
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ntfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
|
|
{
|
|
struct ntfid *ntfhp = (struct ntfid *)fhp;
|
|
int error;
|
|
|
|
DDPRINTF("ntfs_fhtovp(): %s: %u\n",
|
|
mp->mnt_stat.f_mntonname, ntfhp->ntfid_ino);
|
|
|
|
error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL,
|
|
LK_EXCLUSIVE | LK_RETRY, 0, vpp); /* XXX */
|
|
if (error != 0) {
|
|
*vpp = NULLVP;
|
|
return (error);
|
|
}
|
|
|
|
/* XXX as unlink/rmdir/mkdir/creat are not currently possible
|
|
* with NTFS, we don't need to check anything else for now */
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ntfs_vptofh(struct vnode *vp, struct fid *fhp)
|
|
{
|
|
struct ntnode *ntp;
|
|
struct ntfid *ntfhp;
|
|
struct fnode *fn;
|
|
|
|
DDPRINTF("ntfs_fhtovp(): %s: %p\n",
|
|
vp->v_mount->mnt_stat.f_mntonname, vp);
|
|
|
|
fn = VTOF(vp);
|
|
ntp = VTONT(vp);
|
|
ntfhp = (struct ntfid *)fhp;
|
|
ntfhp->ntfid_len = sizeof(struct ntfid);
|
|
ntfhp->ntfid_ino = ntp->i_number;
|
|
ntfhp->ntfid_attr = fn->f_attrtype;
|
|
#ifdef notyet
|
|
ntfhp->ntfid_gen = ntp->i_gen;
|
|
#endif
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ntfs_vgetex(struct mount *mp, ntfsino_t ino, u_int32_t attrtype, char *attrname,
|
|
u_long lkflags, u_long flags, struct vnode **vpp)
|
|
{
|
|
int error;
|
|
struct ntfsmount *ntmp;
|
|
struct ntnode *ip;
|
|
struct fnode *fp;
|
|
struct vnode *vp;
|
|
enum vtype f_type;
|
|
|
|
DPRINTF("ntfs_vgetex: ino: %u, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
|
|
ino, attrtype, attrname ? attrname : "", lkflags, flags);
|
|
|
|
ntmp = VFSTONTFS(mp);
|
|
*vpp = NULL;
|
|
|
|
/* Get ntnode */
|
|
error = ntfs_ntlookup(ntmp, ino, &ip);
|
|
if (error) {
|
|
printf("ntfs_vget: ntfs_ntget failed\n");
|
|
return (error);
|
|
}
|
|
|
|
/* It may be not initialized fully, so force load it */
|
|
if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
|
|
error = ntfs_loadntnode(ntmp, ip);
|
|
if(error) {
|
|
printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
|
|
ip->i_number);
|
|
ntfs_ntput(ip);
|
|
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
|
|
if (error) {
|
|
printf("ntfs_vget: ntfs_fget failed\n");
|
|
ntfs_ntput(ip);
|
|
|
|
return (error);
|
|
}
|
|
|
|
if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
|
|
if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
|
|
(fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
|
|
f_type = VDIR;
|
|
} else if (flags & VG_EXT) {
|
|
f_type = VNON;
|
|
fp->f_size = fp->f_allocated = 0;
|
|
} else {
|
|
f_type = VREG;
|
|
|
|
error = ntfs_filesize(ntmp, fp,
|
|
&fp->f_size, &fp->f_allocated);
|
|
if (error) {
|
|
ntfs_ntput(ip);
|
|
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
fp->f_flag |= FN_VALID;
|
|
}
|
|
|
|
/*
|
|
* We may be calling vget() now. To avoid potential deadlock, we need
|
|
* to release ntnode lock, since due to locking order vnode
|
|
* lock has to be acquired first.
|
|
* ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled
|
|
* prematurely.
|
|
*/
|
|
ntfs_ntput(ip);
|
|
|
|
if (FTOV(fp)) {
|
|
/* vget() returns error if the vnode has been recycled */
|
|
if (vget(FTOV(fp), lkflags) == 0) {
|
|
*vpp = FTOV(fp);
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, &ntfs_vops, &vp);
|
|
if(error) {
|
|
ntfs_frele(fp);
|
|
ntfs_ntput(ip);
|
|
|
|
return (error);
|
|
}
|
|
DPRINTF("ntfs_vget: vnode: %p for ntnode: %u\n", vp, ino);
|
|
|
|
fp->f_vp = vp;
|
|
vp->v_data = fp;
|
|
vp->v_type = f_type;
|
|
|
|
if (ino == NTFS_ROOTINO)
|
|
vp->v_flag |= VROOT;
|
|
|
|
if (lkflags & LK_TYPE_MASK) {
|
|
error = vn_lock(vp, lkflags);
|
|
if (error) {
|
|
vput(vp);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
*vpp = vp;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ntfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
|
|
{
|
|
if (ino > (ntfsino_t)-1)
|
|
panic("ntfs_vget: alien ino_t %llu", (unsigned long long)ino);
|
|
return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
|
|
LK_EXCLUSIVE | LK_RETRY, 0, vpp); /* XXX */
|
|
}
|
|
|
|
const struct vfsops ntfs_vfsops = {
|
|
.vfs_mount = ntfs_mount,
|
|
.vfs_start = ntfs_start,
|
|
.vfs_unmount = ntfs_unmount,
|
|
.vfs_root = ntfs_root,
|
|
.vfs_quotactl = ntfs_quotactl,
|
|
.vfs_statfs = ntfs_statfs,
|
|
.vfs_sync = ntfs_sync,
|
|
.vfs_vget = ntfs_vget,
|
|
.vfs_fhtovp = ntfs_fhtovp,
|
|
.vfs_vptofh = ntfs_vptofh,
|
|
.vfs_init = ntfs_init,
|
|
.vfs_sysctl = ntfs_sysctl,
|
|
.vfs_checkexp = ntfs_checkexp,
|
|
};
|