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mirror of https://git.FreeBSD.org/src.git synced 2024-12-22 11:17:19 +00:00
freebsd/sys/ntfs/ntfs_vnops.c
Robert Watson 012c643d3e o Restructure vaccess() so as to check for DAC permission to modify the
object before falling back on privilege.  Make vaccess() accept an
  additional optional argument, privused, to determine whether
  privilege was required for vaccess() to return 0.  Add commented
  out capability checks for reference.  Rename some variables to make
  it more clear which modes/uids/etc are associated with the object,
  and which with the access mode.
o Update file system use of vaccess() to pass NULL as the optional
  privused argument.  Once additional patches are applied, suser()
  will no longer set ASU, so privused will permit passing of
  privilege information up the stack to the caller.

Reviewed by:	bde, green, phk, -security, others
Obtained from:	TrustedBSD Project
2000-08-29 14:45:49 +00:00

941 lines
24 KiB
C

/* $NetBSD: ntfs_vnops.c,v 1.23 1999/10/31 19:45:27 jdolecek Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* John Heidemann of the UCLA Ficus project.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/malloc.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/dirent.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#if defined(__NetBSD__)
#include <vm/vm_prot.h>
#endif
#include <vm/vm_page.h>
#include <vm/vm_object.h>
#include <vm/vm_pager.h>
#if defined(__FreeBSD__)
#include <vm/vnode_pager.h>
#endif
#include <vm/vm_extern.h>
#include <sys/sysctl.h>
/*#define NTFS_DEBUG 1*/
#include <ntfs/ntfs.h>
#include <ntfs/ntfs_inode.h>
#include <ntfs/ntfs_subr.h>
#if defined(__NetBSD__)
#include <miscfs/specfs/specdev.h>
#include <miscfs/genfs/genfs.h>
#endif
#include <sys/unistd.h> /* for pathconf(2) constants */
static int ntfs_bypass __P((struct vop_generic_args *ap));
static int ntfs_read __P((struct vop_read_args *));
static int ntfs_write __P((struct vop_write_args *ap));
static int ntfs_getattr __P((struct vop_getattr_args *ap));
static int ntfs_inactive __P((struct vop_inactive_args *ap));
static int ntfs_print __P((struct vop_print_args *ap));
static int ntfs_reclaim __P((struct vop_reclaim_args *ap));
static int ntfs_strategy __P((struct vop_strategy_args *ap));
static int ntfs_access __P((struct vop_access_args *ap));
static int ntfs_open __P((struct vop_open_args *ap));
static int ntfs_close __P((struct vop_close_args *ap));
static int ntfs_readdir __P((struct vop_readdir_args *ap));
static int ntfs_lookup __P((struct vop_lookup_args *ap));
static int ntfs_bmap __P((struct vop_bmap_args *ap));
#if defined(__FreeBSD__)
static int ntfs_getpages __P((struct vop_getpages_args *ap));
static int ntfs_putpages __P((struct vop_putpages_args *));
static int ntfs_fsync __P((struct vop_fsync_args *ap));
#endif
static int ntfs_pathconf __P((void *));
int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
#if defined(__FreeBSD__)
int
ntfs_getpages(ap)
struct vop_getpages_args *ap;
{
return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
ap->a_reqpage);
}
int
ntfs_putpages(ap)
struct vop_putpages_args *ap;
{
return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
ap->a_sync, ap->a_rtvals);
}
#endif
/*
* This is a noop, simply returning what one has been given.
*/
int
ntfs_bmap(ap)
struct vop_bmap_args /* {
struct vnode *a_vp;
daddr_t a_bn;
struct vnode **a_vpp;
daddr_t *a_bnp;
int *a_runp;
int *a_runb;
} */ *ap;
{
dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
if (ap->a_vpp != NULL)
*ap->a_vpp = ap->a_vp;
if (ap->a_bnp != NULL)
*ap->a_bnp = ap->a_bn;
if (ap->a_runp != NULL)
*ap->a_runp = 0;
#if !defined(__NetBSD__)
if (ap->a_runb != NULL)
*ap->a_runb = 0;
#endif
return (0);
}
static int
ntfs_read(ap)
struct vop_read_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
struct ucred *a_cred;
} */ *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;
u_int64_t toread;
int error;
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));
dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
/* don't allow reading after end of file */
if (uio->uio_offset > fp->f_size)
toread = 0;
else
toread = min( uio->uio_resid, fp->f_size - uio->uio_offset );
dprintf((", toread: %d\n",(u_int32_t)toread));
if (toread == 0)
return (0);
error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
fp->f_attrname, uio->uio_offset, toread, NULL, uio);
if (error) {
printf("ntfs_read: ntfs_readattr failed: %d\n",error);
return (error);
}
return (0);
}
static int
ntfs_bypass(ap)
struct vop_generic_args /* {
struct vnodeop_desc *a_desc;
<other random data follows, presumably>
} */ *ap;
{
int error = ENOTTY;
dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
return (error);
}
static int
ntfs_getattr(ap)
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
register struct vnode *vp = ap->a_vp;
register struct fnode *fp = VTOF(vp);
register struct ntnode *ip = FTONT(fp);
register struct vattr *vap = ap->a_vap;
dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
#if defined(__FreeBSD__)
vap->va_fsid = dev2udev(ip->i_dev);
#else /* NetBSD */
vap->va_fsid = ip->i_dev;
#endif
vap->va_fileid = ip->i_number;
vap->va_mode = ip->i_mp->ntm_mode;
vap->va_nlink = ip->i_nlink;
vap->va_uid = ip->i_mp->ntm_uid;
vap->va_gid = ip->i_mp->ntm_gid;
vap->va_rdev = 0; /* XXX UNODEV ? */
vap->va_size = fp->f_size;
vap->va_bytes = fp->f_allocated;
vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
vap->va_flags = ip->i_flag;
vap->va_gen = 0;
vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
vap->va_type = vp->v_type;
vap->va_filerev = 0;
return (0);
}
/*
* Last reference to an ntnode. If necessary, write or delete it.
*/
int
ntfs_inactive(ap)
struct vop_inactive_args /* {
struct vnode *a_vp;
} */ *ap;
{
register struct vnode *vp = ap->a_vp;
#ifdef NTFS_DEBUG
register struct ntnode *ip = VTONT(vp);
#endif
dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
if (ntfs_prtactive && vp->v_usecount != 0)
vprint("ntfs_inactive: pushing active", vp);
VOP__UNLOCK(vp, 0, ap->a_p);
/* XXX since we don't support any filesystem changes
* right now, nothing more needs to be done
*/
return (0);
}
/*
* Reclaim an fnode/ntnode so that it can be used for other purposes.
*/
int
ntfs_reclaim(ap)
struct vop_reclaim_args /* {
struct vnode *a_vp;
} */ *ap;
{
register struct vnode *vp = ap->a_vp;
register struct fnode *fp = VTOF(vp);
register struct ntnode *ip = FTONT(fp);
int error;
dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
if (ntfs_prtactive && vp->v_usecount != 0)
vprint("ntfs_reclaim: pushing active", vp);
if ((error = ntfs_ntget(ip)) != 0)
return (error);
/* Purge old data structures associated with the inode. */
cache_purge(vp);
if (ip->i_devvp) {
vrele(ip->i_devvp);
ip->i_devvp = NULL;
}
ntfs_frele(fp);
ntfs_ntput(ip);
vp->v_data = NULL;
return (0);
}
static int
ntfs_print(ap)
struct vop_print_args /* {
struct vnode *a_vp;
} */ *ap;
{
return (0);
}
/*
* Calculate the logical to physical mapping if not done already,
* then call the device strategy routine.
*/
int
ntfs_strategy(ap)
struct vop_strategy_args /* {
struct buf *a_bp;
} */ *ap;
{
register struct buf *bp = ap->a_bp;
register struct vnode *vp = bp->b_vp;
register struct fnode *fp = VTOF(vp);
register struct ntnode *ip = FTONT(fp);
struct ntfsmount *ntmp = ip->i_mp;
int error;
#ifdef __FreeBSD__
dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
(u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
(u_int32_t)bp->b_lblkno));
#else
dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
(u_int32_t)bp->b_blkno,
(u_int32_t)bp->b_lblkno));
#endif
dprintf(("strategy: bcount: %d flags: 0x%lx\n",
(u_int32_t)bp->b_bcount,bp->b_flags));
if (bp->b_iocmd == BIO_READ) {
u_int32_t toread;
if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
clrbuf(bp);
error = 0;
} else {
toread = min(bp->b_bcount,
fp->f_size-ntfs_cntob(bp->b_blkno));
dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
toread,(u_int32_t)fp->f_size));
error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
fp->f_attrname, ntfs_cntob(bp->b_blkno),
toread, bp->b_data, NULL);
if (error) {
printf("ntfs_strategy: ntfs_readattr failed\n");
bp->b_error = error;
bp->b_ioflags |= BIO_ERROR;
}
bzero(bp->b_data + toread, bp->b_bcount - toread);
}
} else {
size_t tmp;
u_int32_t towrite;
if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
printf("ntfs_strategy: CAN'T EXTEND FILE\n");
bp->b_error = error = EFBIG;
bp->b_ioflags |= BIO_ERROR;
} else {
towrite = min(bp->b_bcount,
fp->f_size-ntfs_cntob(bp->b_blkno));
dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
towrite,(u_int32_t)fp->f_size));
error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
bp->b_data, &tmp, NULL);
if (error) {
printf("ntfs_strategy: ntfs_writeattr fail\n");
bp->b_error = error;
bp->b_ioflags |= BIO_ERROR;
}
}
}
bufdone(bp);
return (error);
}
static int
ntfs_write(ap)
struct vop_write_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
struct ucred *a_cred;
} */ *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;
u_int64_t towrite;
size_t written;
int error;
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));
dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
if (uio->uio_resid + uio->uio_offset > fp->f_size) {
printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
return (EFBIG);
}
towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset);
dprintf((", towrite: %d\n",(u_int32_t)towrite));
error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
#ifdef NTFS_DEBUG
if (error)
printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
#endif
return (error);
}
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);
mode_t mode = ap->a_mode;
#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;
}
}
return (vaccess(vp->v_type, ip->i_mp->ntm_mode, ip->i_mp->ntm_uid,
ip->i_mp->ntm_gid, ap->a_mode, ap->a_cred, NULL));
}
/*
* 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
ddprintf(("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",
(int)cnp->cn_namelen, 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)
return (error);
#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;
error = 0;
} 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);
cnp->cn_flags |= PDIRUNLOCK;
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,cnp->cn_proc)==0)
cnp->cn_flags &= ~PDIRUNLOCK;
return (error);
}
if (lockparent && (cnp->cn_flags & ISLASTCN)) {
error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_proc);
if (error) {
vput( *(ap->a_vpp) );
return (error);
}
cnp->cn_flags &= ~PDIRUNLOCK;
}
} else {
error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
if (error) {
dprintf(("ntfs_ntlookupfile: returned %d\n", 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);
}
#if defined(__FreeBSD__)
/*
* 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);
}
#endif
/*
* Return POSIX pathconf information applicable to NTFS filesystem
*/
int
ntfs_pathconf(v)
void *v;
{
struct vop_pathconf_args /* {
struct vnode *a_vp;
int a_name;
register_t *a_retval;
} */ *ap = v;
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = 1;
return (0);
case _PC_NAME_MAX:
*ap->a_retval = NTFS_MAXFILENAME;
return (0);
case _PC_PATH_MAX:
*ap->a_retval = PATH_MAX;
return (0);
case _PC_CHOWN_RESTRICTED:
*ap->a_retval = 1;
return (0);
case _PC_NO_TRUNC:
*ap->a_retval = 0;
return (0);
#if defined(__NetBSD__)
case _PC_SYNC_IO:
*ap->a_retval = 1;
return (0);
case _PC_FILESIZEBITS:
*ap->a_retval = 64;
return (0);
#endif
default:
return (EINVAL);
}
/* NOTREACHED */
}
/*
* Global vfs data structures
*/
vop_t **ntfs_vnodeop_p;
#if defined(__FreeBSD__)
static
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 },
{ &vop_pathconf_desc, ntfs_pathconf },
{ &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 },
{ &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 },
{ &vop_getpages_desc, (vop_t *) ntfs_getpages },
{ &vop_putpages_desc, (vop_t *) ntfs_putpages },
{ &vop_strategy_desc, (vop_t *)ntfs_strategy },
{ &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
{ &vop_read_desc, (vop_t *)ntfs_read },
{ &vop_write_desc, (vop_t *)ntfs_write },
{ NULL, NULL }
};
static
struct vnodeopv_desc ntfs_vnodeop_opv_desc =
{ &ntfs_vnodeop_p, ntfs_vnodeop_entries };
VNODEOP_SET(ntfs_vnodeop_opv_desc);
#else /* !FreeBSD */
struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
{ &vop_default_desc, (vop_t *) ntfs_bypass },
{ &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */
{ &vop_create_desc, genfs_eopnotsupp }, /* create */
{ &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
{ &vop_open_desc, (vop_t *) ntfs_open }, /* open */
{ &vop_close_desc,(vop_t *) ntfs_close }, /* close */
{ &vop_access_desc, (vop_t *) ntfs_access }, /* access */
{ &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */
{ &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */
{ &vop_read_desc, (vop_t *) ntfs_read }, /* read */
{ &vop_write_desc, (vop_t *) ntfs_write }, /* write */
{ &vop_lease_desc, genfs_lease_check }, /* lease */
{ &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
{ &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
{ &vop_poll_desc, genfs_poll }, /* poll */
{ &vop_revoke_desc, genfs_revoke }, /* revoke */
{ &vop_mmap_desc, genfs_eopnotsupp }, /* mmap */
{ &vop_fsync_desc, genfs_fsync }, /* fsync */
{ &vop_seek_desc, genfs_seek }, /* seek */
{ &vop_remove_desc, genfs_eopnotsupp }, /* remove */
{ &vop_link_desc, genfs_eopnotsupp }, /* link */
{ &vop_rename_desc, genfs_eopnotsupp }, /* rename */
{ &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
{ &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
{ &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
{ &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */
{ &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
{ &vop_abortop_desc, genfs_abortop }, /* abortop */
{ &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */
{ &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */
{ &vop_lock_desc, genfs_lock }, /* lock */
{ &vop_unlock_desc, genfs_unlock }, /* unlock */
{ &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */
{ &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */
{ &vop_print_desc, (vop_t *) ntfs_print }, /* print */
{ &vop_islocked_desc, genfs_islocked }, /* islocked */
{ &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */
{ &vop_advlock_desc, genfs_nullop }, /* advlock */
{ &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */
{ &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */
{ &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */
{ &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */
{ &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */
{ &vop_update_desc, genfs_eopnotsupp }, /* update */
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
{ (struct vnodeop_desc *)NULL, (int (*) __P((void *)))NULL }
};
struct vnodeopv_desc ntfs_vnodeop_opv_desc =
{ &ntfs_vnodeop_p, ntfs_vnodeop_entries };
#endif