diff options
Diffstat (limited to 'sys/fs/ntfs/ntfs_vnops.c')
| -rw-r--r-- | sys/fs/ntfs/ntfs_vnops.c | 977 |
1 files changed, 977 insertions, 0 deletions
diff --git a/sys/fs/ntfs/ntfs_vnops.c b/sys/fs/ntfs/ntfs_vnops.c new file mode 100644 index 0000000..381cb8f --- /dev/null +++ b/sys/fs/ntfs/ntfs_vnops.c @@ -0,0 +1,977 @@ +/* $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/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_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, NULL); + + 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, NULL); + + 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_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); + 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; + } + } + + /* 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_mp->ntm_uid) { + if (mode & VEXEC) + mask |= S_IXUSR; + if (mode & VREAD) + mask |= S_IRUSR; + if (mode & VWRITE) + mask |= S_IWUSR; + return ((ip->i_mp->ntm_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_mp->ntm_gid == *gp) { + if (mode & VEXEC) + mask |= S_IXGRP; + if (mode & VREAD) + mask |= S_IRGRP; + if (mode & VWRITE) + mask |= S_IWGRP; + return ((ip->i_mp->ntm_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_mp->ntm_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 + + 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 |
