freebsd-skq/sys/ntfs/ntfs_vnops.c
semenu 05d36e7aea Added limited write ability. Now we can use some kind
of files for swap holders. See mount_ntfs..8 for details.
1999-02-19 12:31:02 +00:00

1034 lines
25 KiB
C

/*
* 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.
*
* $Id: ntfs_vnops.c,v 1.10 1999/02/02 03:15:13 semen Exp $
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/proc.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/buf.h>
#include <sys/dirent.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_prot.h>
#include <vm/vm_page.h>
#include <vm/vm_object.h>
#include <vm/vm_pager.h>
#include <vm/vnode_pager.h>
#include <vm/vm_extern.h>
/*#define NTFS_DEBUG 1*/
#include <ntfs/ntfs.h>
#include <ntfs/ntfs_inode.h>
#include <ntfs/ntfs_subr.h>
#include <ntfs/ntfs_extern.h>
#include <miscfs/specfs/specdev.h>
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));
#if __FreeBSD_version < 300000
static int ntfs_islocked __P((struct vop_islocked_args *ap));
static int ntfs_unlock __P((struct vop_unlock_args *ap));
static int ntfs_lock __P((struct vop_lock_args *ap));
#endif
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));
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));
int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
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);
}
/*
* 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 (ap->a_runb != NULL)
*ap->a_runb = 0;
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_int8_t *data;
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));
ntfs_filesize(ntmp, fp, &toread, NULL);
dprintf(("ntfs_read: filesize: %d",(u_int32_t)toread));
toread = min( uio->uio_resid, toread - uio->uio_offset );
dprintf((", toread: %d\n",(u_int32_t)toread));
MALLOC(data, u_int8_t *, toread, M_TEMP,M_WAITOK);
error = ntfs_readattr( ntmp, ip, fp->f_attrtype,
fp->f_attrname, uio->uio_offset, toread, data);
if(error) {
printf("ntfs_read: ntfs_readattr failed: %d\n",error);
FREE(data, M_TEMP);
return (error);
}
error = uiomove(data, (int) toread, uio);
if(error) {
printf("ntfs_read: uiomove failed: %d\n",error);
FREE(data, M_TEMP);
return (error);
}
FREE(data, M_TEMP);
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));
vap->va_fsid = fp->f_dev;
vap->va_fileid = ip->i_number;
vap->va_mode = ip->i_mode;
vap->va_nlink = ip->i_nlink;
vap->va_uid = ip->i_uid;
vap->va_gid = ip->i_gid;
vap->va_rdev = (dev_t)0;
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 = fp->f_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;
#if defined(NTFS_DEBUG) || defined(DISGNOSTIC)
register struct ntnode *ip = VTONT(vp);
#endif
int error;
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);
error = 0;
#if __FreeBSD_version >= 300000
VOP_UNLOCK(vp,0,ap->a_p);
#else
#ifdef DIAGNOSTIC
if (VOP_ISLOCKED(vp))
panic("ntfs_inactive: locked ntnode");
if (curproc)
ip->i_lockholder = curproc->p_pid;
else
ip->i_lockholder = -1;
#endif
ip->i_flag |= IN_LOCKED;
VOP_UNLOCK(vp);
#endif
/*
* If we are done with the ntnode, reclaim it
* so that it can be reused immediately.
*/
if (vp->v_usecount == 0 /*&& ip->i_mode == 0*/)
#if __FreeBSD_version >= 300000
vrecycle(vp, (struct simplelock *)0, ap->a_p);
#else
vgone(vp);
#endif
return (error);
}
/*
* Reclaim an inode 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);
#if NTFS_DEBUG
register struct ntnode *ip = FTONT(fp);
#endif
dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
#if __FreeBSD_version >= 300000
VOP_UNLOCK(vp,0,ap->a_p);
#endif
/* Purge old data structures associated with the inode. */
cache_purge(vp);
if (fp->f_devvp) {
vrele(fp->f_devvp);
fp->f_devvp = NULL;
}
ntfs_frele(fp);
vp->v_data = NULL;
return (0);
}
static int
ntfs_print(ap)
struct vop_print_args /* {
struct vnode *a_vp;
} */ *ap;
{
/* printf("[ntfs_print]");*/
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;
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));
dprintf(("strategy: bcount: %d flags: 0x%x\n",
(u_int32_t)bp->b_bcount,bp->b_flags));
if (bp->b_flags & B_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);
if (error) {
printf("ntfs_strategy: ntfs_readattr failed\n");
bp->b_error = error;
bp->b_flags |= B_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_flags |= B_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);
if (error) {
printf("ntfs_strategy: ntfs_writeattr fail\n");
bp->b_error = error;
bp->b_flags |= B_ERROR;
}
}
}
biodone(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_int8_t *data;
u_int64_t towrite;
off_t off;
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));
ntfs_filesize(ntmp, fp, &towrite, NULL);
if (uio->uio_resid + uio->uio_offset > towrite) {
printf("ntfs_write: CAN'T WRITE BEYOND OF FILE\n");
return (EFBIG);
}
dprintf(("ntfs_write: filesize: %d",(u_int32_t)towrite));
towrite = min(uio->uio_resid, towrite - uio->uio_offset);
off = uio->uio_offset;
dprintf((", towrite: %d\n",(u_int32_t)towrite));
MALLOC(data, u_int8_t *, towrite, M_TEMP,M_WAITOK);
error = uiomove(data, (int) towrite, uio);
if(error) {
FREE(data, M_TEMP);
return (error);
}
error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
fp->f_attrname, off, towrite, data, &written);
if(error) {
printf("ntfs_write: ntfs_writeattr failed: %d\n",error);
FREE(data, M_TEMP);
return (error);
}
FREE(data, M_TEMP);
return (0);
}
#if __FreeBSD_version < 300000
/*
* Check for a locked ntnode.
*/
int
ntfs_islocked(ap)
struct vop_islocked_args /* {
struct vnode *a_vp;
} */ *ap;
{
register struct ntnode *ip = VTONT(ap->a_vp);
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);
struct proc *p = curproc;
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);
}
/*
#undef dprintf
#define dprintf(a) printf a
*/
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;
while( !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)) ) {
if( ntfs_isnamepermitted(ntmp,iep) ) {
dprintf(("ntfs_readdir: elem: %d, fname:[",num));
for(i=0;i<iep->ie_fnamelen;i++) {
cde.d_name[i] = (char)iep->ie_fname[i];
dprintf(("%c", cde.d_name[i]));
}
dprintf(("] type: %d, flag: %d, ",iep->ie_fnametype, iep->ie_flag));
cde.d_name[i] = '\0';
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++;
}
iep = NTFS_NEXTREC(iep,struct attr_indexentry *);
}
}
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 __FreeBSD_version >= 300000
u_long *cookies;
u_long *cookiep;
#else
u_int *cookies;
u_int *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 *)
(uio->uio_iov->iov_base - (uio->uio_offset - off));
#if __FreeBSD_version >= 300000
MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
M_TEMP, M_WAITOK);
#else
MALLOC(cookies, u_int *, ncookies * sizeof(u_int),
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);
}
/*
#undef dprintf
#define dprintf(a)
*/
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_namelen == 1) &&
!strncmp(cnp->cn_nameptr,".",1) ) {
dprintf(("ntfs_lookup: faking . directory in %d\n",
dip->i_number));
VREF(dvp);
*ap->a_vpp = dvp;
return (0);
} else if( (cnp->cn_namelen == 2) &&
!strncmp(cnp->cn_nameptr,"..",2) &&
(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);
#if __FreeBSD_version >= 300000
VOP_UNLOCK(dvp,0,cnp->cn_proc);
#else
VOP_UNLOCK(dvp);
#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 __FreeBSD_version >= 300000
VOP_LOCK(dvp, 0, cnp->cn_proc);
#else
VOP_LOCK(dvp);
#endif
return(error);
}
if( lockparent && (cnp->cn_flags & ISLASTCN) &&
#if __FreeBSD_version >= 300000
(error = VOP_LOCK(dvp, 0, cnp->cn_proc)) ) {
#else
(error = VOP_LOCK(dvp)) ) {
#endif
vput( *(ap->a_vpp) );
return (error);
}
return (error);
} else {
error = ntfs_ntlookup(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))
#if __FreeBSD_version >= 300000
VOP_UNLOCK(dvp, 0, cnp->cn_proc);
#else
VOP_UNLOCK(dvp);
#endif
}
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;
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 },
#if __FreeBSD_version >= 30000
{ &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
{ &vop_islocked_desc, (vop_t *)ntfs_islocked },
{ &vop_unlock_desc, (vop_t *)ntfs_unlock },
{ &vop_lock_desc, (vop_t *)ntfs_lock },
{ &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 },
{ &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);