6f7dc58140
routines - avoids potential DoS attack and closes an easy way to force the kernel to panic * for read(), DTRT WRT offset bigger than file size ntfs_strategy(): adapt to ntfs_readattr() change ntfs_readdir(): use ntfs_u28() to translate the file name characters to 8bit encoding, avoid excessive intendation, reformat the debug messages slightly
1106 lines
27 KiB
C
1106 lines
27 KiB
C
/* $NetBSD: ntfs_vnops.c,v 1.11 1999/09/05 11:09:03 jdolecek Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* John Heidemann of the UCLA Ficus project.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp
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*
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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/kernel.h>
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#include <sys/proc.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/vnode.h>
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#include <sys/mount.h>
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#include <sys/namei.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/dirent.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/vm_prot.h>
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#include <vm/vm_page.h>
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#include <vm/vm_object.h>
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#include <vm/vm_pager.h>
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#if defined(__FreeBSD__)
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#include <vm/vnode_pager.h>
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#endif
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#include <vm/vm_extern.h>
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#include <sys/sysctl.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_extern.h>
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#include <miscfs/specfs/specdev.h>
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#if __NetBSD_Version__ > 104040000
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#include <miscfs/genfs/genfs.h>
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#endif
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static int ntfs_bypass __P((struct vop_generic_args *ap));
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static int ntfs_read __P((struct vop_read_args *));
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static int ntfs_write __P((struct vop_write_args *ap));
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static int ntfs_getattr __P((struct vop_getattr_args *ap));
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static int ntfs_inactive __P((struct vop_inactive_args *ap));
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static int ntfs_print __P((struct vop_print_args *ap));
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static int ntfs_reclaim __P((struct vop_reclaim_args *ap));
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static int ntfs_strategy __P((struct vop_strategy_args *ap));
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#if defined(__NetBSD__) && __NetBSD_Version__ < 104050000
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static int ntfs_islocked __P((struct vop_islocked_args *ap));
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static int ntfs_unlock __P((struct vop_unlock_args *ap));
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static int ntfs_lock __P((struct vop_lock_args *ap));
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#endif
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static int ntfs_access __P((struct vop_access_args *ap));
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static int ntfs_open __P((struct vop_open_args *ap));
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static int ntfs_close __P((struct vop_close_args *ap));
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static int ntfs_readdir __P((struct vop_readdir_args *ap));
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static int ntfs_lookup __P((struct vop_lookup_args *ap));
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static int ntfs_bmap __P((struct vop_bmap_args *ap));
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#if defined(__FreeBSD__)
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static int ntfs_getpages __P((struct vop_getpages_args *ap));
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static int ntfs_putpages __P((struct vop_putpages_args *));
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#endif
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static int ntfs_fsync __P((struct vop_fsync_args *ap));
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int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
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#if defined(__FreeBSD__)
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int
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ntfs_getpages(ap)
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struct vop_getpages_args *ap;
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{
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return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
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ap->a_reqpage);
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}
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int
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ntfs_putpages(ap)
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struct vop_putpages_args *ap;
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{
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return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
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ap->a_sync, ap->a_rtvals);
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}
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#endif
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/*
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* This is a noop, simply returning what one has been given.
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*/
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int
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ntfs_bmap(ap)
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struct vop_bmap_args /* {
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struct vnode *a_vp;
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daddr_t a_bn;
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struct vnode **a_vpp;
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daddr_t *a_bnp;
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int *a_runp;
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int *a_runb;
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} */ *ap;
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{
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dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
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if (ap->a_vpp != NULL)
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*ap->a_vpp = ap->a_vp;
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if (ap->a_bnp != NULL)
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*ap->a_bnp = ap->a_bn;
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if (ap->a_runp != NULL)
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*ap->a_runp = 0;
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#if !defined(__NetBSD__)
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if (ap->a_runb != NULL)
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*ap->a_runb = 0;
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#endif
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return (0);
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}
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static int
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ntfs_read(ap)
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struct vop_read_args /* {
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struct vnode *a_vp;
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struct uio *a_uio;
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int a_ioflag;
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struct ucred *a_cred;
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} */ *ap;
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{
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register struct vnode *vp = ap->a_vp;
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register struct fnode *fp = VTOF(vp);
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register struct ntnode *ip = FTONT(fp);
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struct uio *uio = ap->a_uio;
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struct ntfsmount *ntmp = ip->i_mp;
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u_int64_t toread;
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int error;
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dprintf(("ntfs_read: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg));
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dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
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/* don't allow reading after end of file */
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if (uio->uio_offset > fp->f_size)
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toread = 0;
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else
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toread = min( uio->uio_resid, fp->f_size - uio->uio_offset );
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dprintf((", toread: %d\n",(u_int32_t)toread));
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if (toread == 0)
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return (0);
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error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
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fp->f_attrname, uio->uio_offset, toread, NULL, uio);
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if (error) {
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printf("ntfs_read: ntfs_readattr failed: %d\n",error);
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return (error);
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}
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return (0);
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}
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static int
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ntfs_bypass(ap)
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struct vop_generic_args /* {
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struct vnodeop_desc *a_desc;
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<other random data follows, presumably>
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} */ *ap;
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{
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int error = ENOTTY;
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dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
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return (error);
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}
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static int
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ntfs_getattr(ap)
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struct vop_getattr_args /* {
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struct vnode *a_vp;
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struct vattr *a_vap;
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struct ucred *a_cred;
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struct proc *a_p;
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} */ *ap;
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{
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register struct vnode *vp = ap->a_vp;
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register struct fnode *fp = VTOF(vp);
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register struct ntnode *ip = FTONT(fp);
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register struct vattr *vap = ap->a_vap;
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dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
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#if defined(__FreeBSD__)
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vap->va_fsid = dev2udev(fp->f_dev);
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#else /* NetBSD */
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vap->va_fsid = fp->f_dev;
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#endif
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vap->va_fileid = ip->i_number;
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vap->va_mode = ip->i_mode;
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vap->va_nlink = ip->i_nlink;
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vap->va_uid = ip->i_uid;
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vap->va_gid = ip->i_gid;
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vap->va_rdev = 0; /* XXX UNODEV ? */
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vap->va_size = fp->f_size;
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vap->va_bytes = fp->f_allocated;
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vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
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vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
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vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
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vap->va_flags = ip->i_flag;
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vap->va_gen = 0;
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vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
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vap->va_type = fp->f_type;
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vap->va_filerev = 0;
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return (0);
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}
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/*
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* Last reference to an ntnode. If necessary, write or delete it.
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*/
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int
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ntfs_inactive(ap)
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struct vop_inactive_args /* {
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struct vnode *a_vp;
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} */ *ap;
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{
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register struct vnode *vp = ap->a_vp;
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register struct ntnode *ip = VTONT(vp);
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int error;
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dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
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if (ntfs_prtactive && vp->v_usecount != 0)
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vprint("ntfs_inactive: pushing active", vp);
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error = 0;
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VOP__UNLOCK(vp,0,ap->a_p);
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/*
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* If we are done with the ntnode, reclaim it
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* so that it can be reused immediately.
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*/
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if (vp->v_usecount == 0 && ip->i_mode == 0)
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#if defined(__FreeBSD__)
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vrecycle(vp, (struct simplelock *)0, ap->a_p);
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#else /* defined(__NetBSD__) */
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vgone(vp);
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#endif
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return (error);
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}
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/*
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* Reclaim an inode so that it can be used for other purposes.
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*/
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int
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ntfs_reclaim(ap)
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struct vop_reclaim_args /* {
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struct vnode *a_vp;
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} */ *ap;
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{
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register struct vnode *vp = ap->a_vp;
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register struct fnode *fp = VTOF(vp);
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register struct ntnode *ip = FTONT(fp);
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int error;
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dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
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error = ntfs_ntget(ip);
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if (error)
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return (error);
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#if defined(__FreeBSD__)
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VOP__UNLOCK(vp,0,ap->a_p);
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#endif
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/* Purge old data structures associated with the inode. */
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cache_purge(vp);
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if (fp->f_devvp) {
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vrele(fp->f_devvp);
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fp->f_devvp = NULL;
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}
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ntfs_frele(fp);
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vp->v_data = NULL;
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ntfs_ntput(ip);
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return (0);
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}
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static int
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ntfs_print(ap)
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struct vop_print_args /* {
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struct vnode *a_vp;
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} */ *ap;
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{
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/* printf("[ntfs_print]");*/
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return (0);
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}
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/*
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* Calculate the logical to physical mapping if not done already,
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* then call the device strategy routine.
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*/
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int
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ntfs_strategy(ap)
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struct vop_strategy_args /* {
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struct buf *a_bp;
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} */ *ap;
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{
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register struct buf *bp = ap->a_bp;
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register struct vnode *vp = bp->b_vp;
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register struct fnode *fp = VTOF(vp);
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register struct ntnode *ip = FTONT(fp);
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struct ntfsmount *ntmp = ip->i_mp;
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int error;
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#ifdef __FreeBSD__
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dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
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(u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
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(u_int32_t)bp->b_lblkno));
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#else
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dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
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(u_int32_t)bp->b_blkno,
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(u_int32_t)bp->b_lblkno));
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#endif
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dprintf(("strategy: bcount: %d flags: 0x%lx\n",
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(u_int32_t)bp->b_bcount,bp->b_flags));
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if (bp->b_flags & B_READ) {
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u_int32_t toread;
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if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
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clrbuf(bp);
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error = 0;
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} else {
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toread = min(bp->b_bcount,
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fp->f_size-ntfs_cntob(bp->b_blkno));
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dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
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toread,(u_int32_t)fp->f_size));
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error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
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fp->f_attrname, ntfs_cntob(bp->b_blkno),
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toread, bp->b_data, NULL);
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if (error) {
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printf("ntfs_strategy: ntfs_readattr failed\n");
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bp->b_error = error;
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bp->b_flags |= B_ERROR;
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}
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bzero(bp->b_data + toread, bp->b_bcount - toread);
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}
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} else {
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size_t tmp;
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u_int32_t towrite;
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if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
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printf("ntfs_strategy: CAN'T EXTEND FILE\n");
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bp->b_error = error = EFBIG;
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bp->b_flags |= B_ERROR;
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} else {
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towrite = min(bp->b_bcount,
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fp->f_size-ntfs_cntob(bp->b_blkno));
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dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
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towrite,(u_int32_t)fp->f_size));
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error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
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fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
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bp->b_data, &tmp, NULL);
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if (error) {
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printf("ntfs_strategy: ntfs_writeattr fail\n");
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bp->b_error = error;
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bp->b_flags |= B_ERROR;
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}
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}
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}
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biodone(bp);
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return (error);
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}
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|
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static int
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ntfs_write(ap)
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struct vop_write_args /* {
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struct vnode *a_vp;
|
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struct uio *a_uio;
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int a_ioflag;
|
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struct ucred *a_cred;
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} */ *ap;
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{
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register struct vnode *vp = ap->a_vp;
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register struct fnode *fp = VTOF(vp);
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register struct ntnode *ip = FTONT(fp);
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struct uio *uio = ap->a_uio;
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struct ntfsmount *ntmp = ip->i_mp;
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u_int64_t towrite;
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size_t written;
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int error;
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dprintf(("ntfs_write: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg));
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dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
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if (uio->uio_resid + uio->uio_offset > fp->f_size) {
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printf("ntfs_write: CAN'T WRITE BEYOND OF FILE\n");
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return (EFBIG);
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}
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towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset);
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dprintf((", towrite: %d\n",(u_int32_t)towrite));
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error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
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fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
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|
if (error) {
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|
printf("ntfs_write: ntfs_writeattr failed: %d\n",error);
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return (error);
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}
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|
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return (0);
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}
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|
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#if defined(__NetBSD__) && __NetBSD_Version__ < 104050000
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|
/*
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|
* Check for a locked ntnode.
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|
*/
|
|
int
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|
ntfs_islocked(ap)
|
|
struct vop_islocked_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *ap;
|
|
{
|
|
register struct ntnode *ip = VTONT(ap->a_vp);
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|
|
dprintf(("ntfs_islocked %d\n",ip->i_number));
|
|
|
|
if (ip->i_flag & IN_LOCKED)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Unlock an ntnode. If WANT bit is on, wakeup.
|
|
*/
|
|
int ntfs_lockcount = 90;
|
|
int
|
|
ntfs_unlock(ap)
|
|
struct vop_unlock_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *ap;
|
|
{
|
|
register struct ntnode *ip = VTONT(ap->a_vp);
|
|
#ifdef DIAGNOSTIC
|
|
struct proc *p = curproc;
|
|
#endif
|
|
|
|
dprintf(("ntfs_unlock %d\n",ip->i_number));
|
|
|
|
#ifdef DIAGNOSTIC
|
|
|
|
if ((ip->i_flag & IN_LOCKED) == 0) {
|
|
vprint("ntfs_unlock: unlocked ntnode", ap->a_vp);
|
|
panic("ntfs_unlock NOT LOCKED");
|
|
}
|
|
if (p && p->p_pid != ip->i_lockholder && p->p_pid > -1 &&
|
|
ip->i_lockholder > -1 && ntfs_lockcount++ < 100)
|
|
panic("unlocker (%d) != lock holder (%d)",
|
|
p->p_pid, ip->i_lockholder);
|
|
#endif
|
|
|
|
if (--ip->i_lockcount > 0) {
|
|
if ((ip->i_flag & IN_RECURSE) == 0)
|
|
panic("ntfs_unlock: recursive lock prematurely released, pid=%d\n", ip->i_lockholder);
|
|
return (0);
|
|
}
|
|
ip->i_lockholder = 0;
|
|
ip->i_flag &= ~(IN_LOCKED|IN_RECURSE);
|
|
if (ip->i_flag & IN_WANTED) {
|
|
ip->i_flag &= ~IN_WANTED;
|
|
wakeup((caddr_t)ip);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Lock an ntnode. If its already locked, set the WANT bit and sleep.
|
|
*/
|
|
int
|
|
ntfs_lock(ap)
|
|
struct vop_lock_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *ap;
|
|
{
|
|
struct proc *p = curproc;
|
|
register struct vnode *vp = ap->a_vp;
|
|
register struct ntnode *ip = VTONT(vp);
|
|
|
|
dprintf(("ntfs_lock %d (%d locks)\n",ip->i_number,ip->i_lockcount));
|
|
|
|
start:
|
|
while (vp->v_flag & VXLOCK) {
|
|
vp->v_flag |= VXWANT;
|
|
(void) tsleep((caddr_t)vp, PINOD, "ntflk1", 0);
|
|
}
|
|
if (vp->v_tag == VT_NON)
|
|
return (ENOENT);
|
|
ip = VTONT(vp);
|
|
if (ip->i_flag & IN_LOCKED) {
|
|
if (p->p_pid == ip->i_lockholder) {
|
|
if( (ip->i_flag & IN_RECURSE) == 0)
|
|
panic("ntfs_lock: recursive lock not expected, pid: %d\n",
|
|
ip->i_lockholder);
|
|
} else {
|
|
ip->i_flag |= IN_WANTED;
|
|
#ifdef DIAGNOSTIC
|
|
if (p)
|
|
ip->i_lockwaiter = p->p_pid;
|
|
else
|
|
ip->i_lockwaiter = -1;
|
|
#endif
|
|
(void) tsleep((caddr_t)ip, PINOD, "ntflk2", 0);
|
|
goto start;
|
|
}
|
|
}
|
|
#ifdef DIAGNOSTIC
|
|
ip->i_lockwaiter = 0;
|
|
if (((ip->i_flag & IN_RECURSE) == 0) && (ip->i_lockholder != 0))
|
|
panic("lockholder (%d) != 0", ip->i_lockholder);
|
|
if (p && p->p_pid == 0)
|
|
printf("locking by process 0\n");
|
|
#endif
|
|
|
|
if ((ip->i_flag & IN_RECURSE) == 0)
|
|
ip->i_lockcount = 1;
|
|
else
|
|
++ip->i_lockcount;
|
|
|
|
if (p)
|
|
ip->i_lockholder = p->p_pid;
|
|
else
|
|
ip->i_lockholder = -1;
|
|
ip->i_flag |= IN_LOCKED;
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
ntfs_access(ap)
|
|
struct vop_access_args /* {
|
|
struct vnode *a_vp;
|
|
int a_mode;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap;
|
|
{
|
|
struct vnode *vp = ap->a_vp;
|
|
struct ntnode *ip = VTONT(vp);
|
|
struct ucred *cred = ap->a_cred;
|
|
mode_t mask, mode = ap->a_mode;
|
|
register gid_t *gp;
|
|
int i;
|
|
#ifdef QUOTA
|
|
int error;
|
|
#endif
|
|
|
|
dprintf(("ntfs_access: %d\n",ip->i_number));
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
if (mode & VWRITE) {
|
|
switch ((int)vp->v_type) {
|
|
case VDIR:
|
|
case VLNK:
|
|
case VREG:
|
|
if (vp->v_mount->mnt_flag & MNT_RDONLY)
|
|
return (EROFS);
|
|
#ifdef QUOTA
|
|
if (error = getinoquota(ip))
|
|
return (error);
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If immutable bit set, nobody gets to write it. */
|
|
/*
|
|
if ((mode & VWRITE) && (ip->i_flags & IMMUTABLE))
|
|
return (EPERM);
|
|
*/
|
|
|
|
/* Otherwise, user id 0 always gets access. */
|
|
if (cred->cr_uid == 0)
|
|
return (0);
|
|
|
|
mask = 0;
|
|
|
|
/* Otherwise, check the owner. */
|
|
if (cred->cr_uid == ip->i_uid) {
|
|
if (mode & VEXEC)
|
|
mask |= S_IXUSR;
|
|
if (mode & VREAD)
|
|
mask |= S_IRUSR;
|
|
if (mode & VWRITE)
|
|
mask |= S_IWUSR;
|
|
return ((ip->i_mode & mask) == mask ? 0 : EACCES);
|
|
}
|
|
|
|
/* Otherwise, check the groups. */
|
|
for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
|
|
if (ip->i_gid == *gp) {
|
|
if (mode & VEXEC)
|
|
mask |= S_IXGRP;
|
|
if (mode & VREAD)
|
|
mask |= S_IRGRP;
|
|
if (mode & VWRITE)
|
|
mask |= S_IWGRP;
|
|
return ((ip->i_mode & mask) == mask ? 0 : EACCES);
|
|
}
|
|
|
|
/* Otherwise, check everyone else. */
|
|
if (mode & VEXEC)
|
|
mask |= S_IXOTH;
|
|
if (mode & VREAD)
|
|
mask |= S_IROTH;
|
|
if (mode & VWRITE)
|
|
mask |= S_IWOTH;
|
|
return ((ip->i_mode & mask) == mask ? 0 : EACCES);
|
|
}
|
|
|
|
/*
|
|
* Open called.
|
|
*
|
|
* Nothing to do.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
ntfs_open(ap)
|
|
struct vop_open_args /* {
|
|
struct vnode *a_vp;
|
|
int a_mode;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap;
|
|
{
|
|
#if NTFS_DEBUG
|
|
register struct vnode *vp = ap->a_vp;
|
|
register struct ntnode *ip = VTONT(vp);
|
|
|
|
printf("ntfs_open: %d\n",ip->i_number);
|
|
#endif
|
|
|
|
/*
|
|
* Files marked append-only must be opened for appending.
|
|
*/
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Close called.
|
|
*
|
|
* Update the times on the inode.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
ntfs_close(ap)
|
|
struct vop_close_args /* {
|
|
struct vnode *a_vp;
|
|
int a_fflag;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap;
|
|
{
|
|
#if NTFS_DEBUG
|
|
register struct vnode *vp = ap->a_vp;
|
|
register struct ntnode *ip = VTONT(vp);
|
|
|
|
printf("ntfs_close: %d\n",ip->i_number);
|
|
#endif
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ntfs_readdir(ap)
|
|
struct vop_readdir_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
struct ucred *a_cred;
|
|
int *a_ncookies;
|
|
u_int **cookies;
|
|
} */ *ap;
|
|
{
|
|
register struct vnode *vp = ap->a_vp;
|
|
register struct fnode *fp = VTOF(vp);
|
|
register struct ntnode *ip = FTONT(fp);
|
|
struct uio *uio = ap->a_uio;
|
|
struct ntfsmount *ntmp = ip->i_mp;
|
|
int i, error = 0;
|
|
u_int32_t faked = 0, num;
|
|
int ncookies = 0;
|
|
struct dirent cde;
|
|
off_t off;
|
|
|
|
dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
|
|
|
|
off = uio->uio_offset;
|
|
|
|
/* Simulate . in every dir except ROOT */
|
|
if( ip->i_number != NTFS_ROOTINO ) {
|
|
struct dirent dot = { NTFS_ROOTINO,
|
|
sizeof(struct dirent), DT_DIR, 1, "." };
|
|
|
|
if( uio->uio_offset < sizeof(struct dirent) ) {
|
|
dot.d_fileno = ip->i_number;
|
|
error = uiomove((char *)&dot,sizeof(struct dirent),uio);
|
|
if(error)
|
|
return (error);
|
|
|
|
ncookies ++;
|
|
}
|
|
}
|
|
|
|
/* Simulate .. in every dir including ROOT */
|
|
if( uio->uio_offset < 2 * sizeof(struct dirent) ) {
|
|
struct dirent dotdot = { NTFS_ROOTINO,
|
|
sizeof(struct dirent), DT_DIR, 2, ".." };
|
|
|
|
error = uiomove((char *)&dotdot,sizeof(struct dirent),uio);
|
|
if(error)
|
|
return (error);
|
|
|
|
ncookies ++;
|
|
}
|
|
|
|
faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
|
|
num = uio->uio_offset / sizeof(struct dirent) - faked;
|
|
|
|
while( uio->uio_resid >= sizeof(struct dirent) ) {
|
|
struct attr_indexentry *iep;
|
|
|
|
error = ntfs_ntreaddir(ntmp, fp, num, &iep);
|
|
|
|
if(error)
|
|
return (error);
|
|
|
|
if( NULL == iep )
|
|
break;
|
|
|
|
for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
|
|
iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
|
|
{
|
|
if(!ntfs_isnamepermitted(ntmp,iep))
|
|
continue;
|
|
|
|
for(i=0; i<iep->ie_fnamelen; i++) {
|
|
cde.d_name[i] = ntfs_u28(iep->ie_fname[i]);
|
|
}
|
|
cde.d_name[i] = '\0';
|
|
dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
|
|
num, cde.d_name, iep->ie_fnametype,
|
|
iep->ie_flag));
|
|
cde.d_namlen = iep->ie_fnamelen;
|
|
cde.d_fileno = iep->ie_number;
|
|
cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
|
|
cde.d_reclen = sizeof(struct dirent);
|
|
dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg"));
|
|
|
|
error = uiomove((char *)&cde, sizeof(struct dirent), uio);
|
|
if(error)
|
|
return (error);
|
|
|
|
ncookies++;
|
|
num++;
|
|
}
|
|
}
|
|
|
|
dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
|
|
ncookies,(u_int)(uio->uio_offset - off)));
|
|
dprintf(("ntfs_readdir: off: %d resid: %d\n",
|
|
(u_int32_t)uio->uio_offset,uio->uio_resid));
|
|
|
|
if (!error && ap->a_ncookies != NULL) {
|
|
struct dirent* dpStart;
|
|
struct dirent* dp;
|
|
#if defined(__FreeBSD__)
|
|
u_long *cookies;
|
|
u_long *cookiep;
|
|
#else /* defined(__NetBSD__) */
|
|
off_t *cookies;
|
|
off_t *cookiep;
|
|
#endif
|
|
|
|
printf("ntfs_readdir: %d cookies\n",ncookies);
|
|
if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
|
|
panic("ntfs_readdir: unexpected uio from NFS server");
|
|
dpStart = (struct dirent *)
|
|
((caddr_t)uio->uio_iov->iov_base -
|
|
(uio->uio_offset - off));
|
|
#if defined(__FreeBSD__)
|
|
MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
|
|
M_TEMP, M_WAITOK);
|
|
#else /* defined(__NetBSD__) */
|
|
MALLOC(cookies, off_t *, ncookies * sizeof(off_t),
|
|
M_TEMP, M_WAITOK);
|
|
#endif
|
|
for (dp = dpStart, cookiep = cookies, i=0;
|
|
i < ncookies;
|
|
dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
|
|
off += dp->d_reclen;
|
|
*cookiep++ = (u_int) off;
|
|
}
|
|
*ap->a_ncookies = ncookies;
|
|
*ap->a_cookies = cookies;
|
|
}
|
|
/*
|
|
if (ap->a_eofflag)
|
|
*ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
|
|
*/
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ntfs_lookup(ap)
|
|
struct vop_lookup_args /* {
|
|
struct vnode *a_dvp;
|
|
struct vnode **a_vpp;
|
|
struct componentname *a_cnp;
|
|
} */ *ap;
|
|
{
|
|
register struct vnode *dvp = ap->a_dvp;
|
|
register struct ntnode *dip = VTONT(dvp);
|
|
struct ntfsmount *ntmp = dip->i_mp;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct ucred *cred = cnp->cn_cred;
|
|
int error;
|
|
int lockparent = cnp->cn_flags & LOCKPARENT;
|
|
#if NTFS_DEBUG
|
|
int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
|
|
#endif
|
|
dprintf(("ntfs_lookup: %s (%ld bytes) in %d, lp: %d, wp: %d \n",
|
|
cnp->cn_nameptr, cnp->cn_namelen,
|
|
dip->i_number,lockparent, wantparent));
|
|
|
|
error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc);
|
|
if(error)
|
|
return (error);
|
|
|
|
if ((cnp->cn_flags & ISLASTCN) &&
|
|
(dvp->v_mount->mnt_flag & MNT_RDONLY) &&
|
|
(cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
|
|
return (EROFS);
|
|
|
|
#ifdef __NetBSD__
|
|
/*
|
|
* We now have a segment name to search for, and a directory
|
|
* to search.
|
|
*
|
|
* Before tediously performing a linear scan of the directory,
|
|
* check the name cache to see if the directory/name pair
|
|
* we are looking for is known already.
|
|
*/
|
|
if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) != 0) {
|
|
int vpid;
|
|
struct vnode *pdp, *vdp = ap->a_dvp;
|
|
struct vnode **vpp = ap->a_vpp;
|
|
u_long flags = cnp->cn_flags;
|
|
|
|
if (error == ENOENT)
|
|
return (error);
|
|
|
|
/*
|
|
* Get the next vnode in the path.
|
|
* See comment below starting `Step through' for
|
|
* an explaination of the locking protocol.
|
|
*/
|
|
pdp = vdp;
|
|
vdp = *vpp;
|
|
vpid = vdp->v_id;
|
|
if (pdp == vdp) { /* lookup on "." */
|
|
VREF(vdp);
|
|
error = 0;
|
|
} else if (flags & ISDOTDOT) {
|
|
VOP_UNLOCK(pdp, 0);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
error = vget(vdp, LK_EXCLUSIVE);
|
|
if (!error && lockparent && (flags & ISLASTCN)){
|
|
error = vn_lock(pdp, LK_EXCLUSIVE);
|
|
if (error == 0)
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
}
|
|
} else {
|
|
error = vget(vdp, LK_EXCLUSIVE);
|
|
if (!lockparent || error || !(flags & ISLASTCN)) {
|
|
VOP_UNLOCK(pdp, 0);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
}
|
|
}
|
|
/*
|
|
* Check that the capability number did not change
|
|
* while we were waiting for the lock.
|
|
*/
|
|
if (!error) {
|
|
if (vpid == vdp->v_id)
|
|
return (0);
|
|
|
|
vput(vdp);
|
|
if (lockparent && pdp != vdp && (flags & ISLASTCN)) {
|
|
VOP_UNLOCK(pdp, 0);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
}
|
|
}
|
|
if ((error = vn_lock(pdp, LK_EXCLUSIVE)) != 0)
|
|
return (error);
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
vdp = pdp;
|
|
*vpp = NULL;
|
|
}
|
|
#endif
|
|
|
|
if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
|
|
dprintf(("ntfs_lookup: faking . directory in %d\n",
|
|
dip->i_number));
|
|
|
|
VREF(dvp);
|
|
*ap->a_vpp = dvp;
|
|
} else if (cnp->cn_flags & ISDOTDOT) {
|
|
struct ntvattr *vap;
|
|
|
|
dprintf(("ntfs_lookup: faking .. directory in %d\n",
|
|
dip->i_number));
|
|
|
|
error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
|
|
if(error)
|
|
return (error);
|
|
|
|
VOP__UNLOCK(dvp,0,cnp->cn_proc);
|
|
#ifdef __NetBSD__
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
#endif
|
|
|
|
dprintf(("ntfs_lookup: parentdir: %d\n",
|
|
vap->va_a_name->n_pnumber));
|
|
error = VFS_VGET(ntmp->ntm_mountp,
|
|
vap->va_a_name->n_pnumber,ap->a_vpp);
|
|
ntfs_ntvattrrele(vap);
|
|
if (error) {
|
|
if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) {
|
|
#ifdef __NetBSD__
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
#endif
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
if (lockparent && (cnp->cn_flags & ISLASTCN)) {
|
|
if ((error = vn_lock(dvp, LK_EXCLUSIVE))) {
|
|
vput( *(ap->a_vpp) );
|
|
return (error);
|
|
}
|
|
#ifdef __NetBSD__
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
#endif
|
|
}
|
|
} else {
|
|
error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
|
|
if(error)
|
|
return (error);
|
|
|
|
dprintf(("ntfs_lookup: found ino: %d\n",
|
|
VTONT(*ap->a_vpp)->i_number));
|
|
|
|
if(!lockparent || !(cnp->cn_flags & ISLASTCN))
|
|
VOP__UNLOCK(dvp, 0, cnp->cn_proc);
|
|
}
|
|
|
|
if (cnp->cn_flags & MAKEENTRY)
|
|
cache_enter(dvp, *ap->a_vpp, cnp);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Flush the blocks of a file to disk.
|
|
*
|
|
* This function is worthless for vnodes that represent directories. Maybe we
|
|
* could just do a sync if they try an fsync on a directory file.
|
|
*/
|
|
static int
|
|
ntfs_fsync(ap)
|
|
struct vop_fsync_args /* {
|
|
struct vnode *a_vp;
|
|
struct ucred *a_cred;
|
|
int a_waitfor;
|
|
struct proc *a_p;
|
|
} */ *ap;
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Global vfs data structures
|
|
*/
|
|
vop_t **ntfs_vnodeop_p;
|
|
#if defined(__FreeBSD__)
|
|
static
|
|
#endif
|
|
struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
|
|
{ &vop_default_desc, (vop_t *)ntfs_bypass },
|
|
|
|
{ &vop_getattr_desc, (vop_t *)ntfs_getattr },
|
|
{ &vop_inactive_desc, (vop_t *)ntfs_inactive },
|
|
{ &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
|
|
{ &vop_print_desc, (vop_t *)ntfs_print },
|
|
|
|
#if defined(__FreeBSD__)
|
|
{ &vop_islocked_desc, (vop_t *)vop_stdislocked },
|
|
{ &vop_unlock_desc, (vop_t *)vop_stdunlock },
|
|
{ &vop_lock_desc, (vop_t *)vop_stdlock },
|
|
{ &vop_cachedlookup_desc, (vop_t *)ntfs_lookup },
|
|
{ &vop_lookup_desc, (vop_t *)vfs_cache_lookup },
|
|
#else
|
|
#if __NetBSD_Version__ >= 104050000
|
|
{ &vop_islocked_desc, genfs_islocked },
|
|
{ &vop_unlock_desc, genfs_unlock },
|
|
{ &vop_lock_desc, genfs_lock },
|
|
{ &vop_fcntl_desc, genfs_fcntl },
|
|
#else
|
|
{ &vop_islocked_desc, (vop_t *)ntfs_islocked },
|
|
{ &vop_unlock_desc, (vop_t *)ntfs_unlock },
|
|
{ &vop_lock_desc, (vop_t *)ntfs_lock },
|
|
#endif
|
|
{ &vop_lookup_desc, (vop_t *)ntfs_lookup },
|
|
#endif
|
|
|
|
{ &vop_access_desc, (vop_t *)ntfs_access },
|
|
{ &vop_close_desc, (vop_t *)ntfs_close },
|
|
{ &vop_open_desc, (vop_t *)ntfs_open },
|
|
{ &vop_readdir_desc, (vop_t *)ntfs_readdir },
|
|
{ &vop_fsync_desc, (vop_t *)ntfs_fsync },
|
|
|
|
{ &vop_bmap_desc, (vop_t *)ntfs_bmap },
|
|
#if defined(__FreeBSD__)
|
|
{ &vop_getpages_desc, (vop_t *) ntfs_getpages },
|
|
{ &vop_putpages_desc, (vop_t *) ntfs_putpages },
|
|
#endif
|
|
{ &vop_strategy_desc, (vop_t *)ntfs_strategy },
|
|
#if defined(__FreeBSD__)
|
|
{ &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
|
|
#else /* defined(__NetBSD__) */
|
|
{ &vop_bwrite_desc, vn_bwrite },
|
|
#endif
|
|
{ &vop_read_desc, (vop_t *)ntfs_read },
|
|
{ &vop_write_desc, (vop_t *)ntfs_write },
|
|
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
#if defined(__FreeBSD__)
|
|
static
|
|
#endif
|
|
struct vnodeopv_desc ntfs_vnodeop_opv_desc =
|
|
{ &ntfs_vnodeop_p, ntfs_vnodeop_entries };
|
|
|
|
#if defined(__FreeBSD__)
|
|
VNODEOP_SET(ntfs_vnodeop_opv_desc);
|
|
#endif
|