/* $NetBSD: ntfs_vfsops.c,v 1.23 1999/11/15 19:38:14 jdolecek Exp $ */ /*- * Copyright (c) 1998, 1999 Semen Ustimenko * All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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: src/sys/fs/ntfs/ntfs_vfsops.c,v 1.44 2002/08/04 10:29:29 jeff Exp $ */ #include #include #include #include #include #include #include #include #ifdef APPLE #include #else #include #endif #include #include #include #ifdef APPLE #include #include #else #include #include #include #include #include #endif /*#define NTFS_DEBUG 1*/ #ifdef APPLE #include "ntfs.h" #include "ntfs_inode.h" #include "ntfs_subr.h" #include "ntfs_vfsops.h" #include "ntfs_ihash.h" #include "ntfsmount.h" #else #include #include #include #include #include #include #endif MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode", "NTFS fnode information"); MALLOC_DEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); struct sockaddr; static int ntfs_root(struct mount *, struct vnode **); #ifdef APPLE static int ntfs_statfs(struct mount *, struct statfs *, struct proc *); static int ntfs_unmount(struct mount *, int, struct proc *); static int ntfs_vget(struct mount *mp, void *ino, struct vnode **vpp); static int ntfs_mountfs(register struct vnode *, struct mount *, struct ntfs_args *, struct proc *); static int ntfs_vptofh(struct vnode *, struct fid *); static int ntfs_fhtovp(struct mount *, struct fid *, struct mbuf *, struct vnode **, int *, struct ucred **); static int ntfs_mount(struct mount *, char *, caddr_t, struct nameidata *, struct proc *); #else static int ntfs_statfs(struct mount *, struct statfs *, struct thread *); static int ntfs_unmount(struct mount *, int, struct thread *); static int ntfs_vget(struct mount *mp, ino_t ino, int lkflags, struct vnode **vpp); static int ntfs_mountfs(register struct vnode *, struct mount *, struct ntfs_args *, struct thread *); static int ntfs_vptofh(struct vnode *, struct fid *); static int ntfs_fhtovp(struct mount *, struct fid *, struct vnode **); static int ntfs_mount(struct mount *, char *, caddr_t, struct nameidata *, struct thread *); #endif static int ntfs_init(struct vfsconf *); static int ntfs_init ( struct vfsconf *vcp ) { ntfs_nthashinit(); ntfs_toupper_init(); return 0; } #ifndef APPLE static int ntfs_uninit ( struct vfsconf *vcp ) { ntfs_toupper_destroy(); ntfs_nthashdestroy(); return 0; } #endif static int ntfs_mount ( struct mount *mp, char *path, caddr_t data, struct nameidata *ndp, #ifdef APPLE struct proc *td ) #else struct thread *td ) #endif { size_t size; int err = 0; struct vnode *devvp; struct ntfs_args args; /* * Use NULL path to flag a root mount */ if( path == NULL) { #ifdef APPLE /* * I don't know if it make sense for FreeBSD to mount NTFS * as a root filesystem. It doesn't make sense for Darwin, * so don't even try. */ err = EINVAL; goto error_1; #else /* *** * Mounting root filesystem *** */ /* Get vnode for root device*/ if( bdevvp( rootdev, &rootvp)) panic("ntfs_mountroot: can't setup bdevvp for root"); /* * FS specific handling */ mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/ /* * Attempt mount */ if( ( err = ntfs_mountfs(rootvp, mp, &args, td)) != 0) { /* fs specific cleanup (if any)*/ goto error_1; } goto dostatfs; /* success*/ #endif } /* *** * Mounting non-root filesystem or updating a filesystem *** */ /* copy in user arguments*/ err = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args)); if (err) goto error_1; /* can't get arguments*/ /* * If updating, check whether changing from read-only to * read/write; if there is no device name, that's all we do. */ if (mp->mnt_flag & MNT_UPDATE) { /* if not updating name...*/ if (args.fspec == 0) { /* * Process export requests. Jumping to "success" * will return the vfs_export() error code. */ #ifdef APPLE struct ntfsmount *pmp = VFSTONTFS(mp); err = vfs_export(mp, &pmp->ntm_export, &args.export); #else err = vfs_export(mp, &args.export); #endif goto success; } printf("ntfs_mount(): MNT_UPDATE not supported\n"); err = EINVAL; goto error_1; } /* * Not an update, or updating the name: look up the name * and verify that it refers to a sensible block device. */ NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, td); err = namei(ndp); if (err) { /* can't get devvp!*/ goto error_1; } #ifndef APPLE /*ее Other APPLE filesystems don't call NDFREE here. Why not? */ NDFREE(ndp, NDF_ONLY_PNBUF); #endif devvp = ndp->ni_vp; #ifdef APPLE if (devvp->v_type != VBLK) { err = ENOTBLK; goto error_2; } if (major(devvp->v_rdev) >= nblkdev) { err = ENXIO; goto error_2; } #else if (!vn_isdisk(devvp, &err)) goto error_2; #endif if (mp->mnt_flag & MNT_UPDATE) { #if 0 /* ******************** * UPDATE ******************** */ if (devvp != ntmp->um_devvp) err = EINVAL; /* needs translation */ else vrele(devvp); /* * Update device name only on success */ if( !err) { /* Save "mounted from" info for mount point (NULL pad)*/ /*ее Check for errors. Do this earlier, in case parameters are bad? */ copyinstr( args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); } #endif } else { /* ******************** * NEW MOUNT ******************** */ /* * Since this is a new mount, we want the names for * the device and the mount point copied in. If an * error occurs, the mountpoint is discarded by the * upper level code. Note that vfs_mount() handles * copying the mountpoint f_mntonname for us, so we * don't have to do it here unless we want to set it * to something other than "path" for some rason. */ /* Save "mounted from" info for mount point (NULL pad)*/ copyinstr( args.fspec, /* device name*/ mp->mnt_stat.f_mntfromname, /* save area*/ MNAMELEN - 1, /* max size*/ &size); /* real size*/ bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); #ifdef APPLE copyinstr( path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); mp->mnt_flag |= MNT_RDONLY; /* Force read-only for Darwin */ #endif err = ntfs_mountfs(devvp, mp, &args, td); } if (err) { goto error_2; } dostatfs: /* * Initialize FS stat information in mount struct; uses both * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname * * This code is common to root and non-root mounts */ (void)VFS_STATFS(mp, &mp->mnt_stat, td); goto success; error_2: /* error with devvp held*/ /* release devvp before failing*/ vrele(devvp); error_1: /* no state to back out*/ success: return(err); } /* * Copy the fields of a struct bootfile from on-disk (little endian) * to memory in native endianness. */ static void bootfile_to_host(struct bootfile *src, struct bootfile *dest) { bcopy(src, dest, sizeof(struct bootfile)); /* Copy the unordered or byte sized fields */ dest->bf_bps = le16toh(src->bf_bps); dest->bf_spt = le16toh(src->bf_spt); dest->bf_heads = le16toh(src->bf_heads); dest->bf_spv = le64toh(src->bf_spv); dest->bf_mftcn = le64toh(src->bf_mftcn); dest->bf_mftmirrcn = le64toh(src->bf_mftmirrcn); dest->bf_ibsz = le32toh(src->bf_ibsz); dest->bf_volsn = le32toh(src->bf_volsn); } /* * Common code for mount and mountroot */ int ntfs_mountfs(devvp, mp, argsp, td) register struct vnode *devvp; struct mount *mp; struct ntfs_args *argsp; #ifdef APPLE struct proc *td; #else struct thread *td; #endif { struct buf *bp; struct ntfsmount *ntmp; dev_t dev = devvp->v_rdev; int error, ronly, ncount, i; struct vnode *vp; /* * Disallow multiple mounts of the same device. * Disallow mounting of a device that is currently in use * (except for root, which might share swap device for miniroot). * Flush out any old buffers remaining from a previous use. */ error = vfs_mountedon(devvp); if (error) return (error); ncount = vcount(devvp); #ifndef APPLE if (devvp->v_object) ncount -= 1; #endif if (ncount > 1 && devvp != rootvp) return (EBUSY); vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, td); #ifdef APPLE error = vinvalbuf(devvp, V_SAVE, td->p_ucred, td, 0, 0); #else error = vinvalbuf(devvp, V_SAVE, td->td_ucred, td, 0, 0); #endif VOP_UNLOCK(devvp, 0, td); if (error) return (error); ronly = (mp->mnt_flag & MNT_RDONLY) != 0; vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, td); error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, td); VOP_UNLOCK(devvp, 0, td); if (error) return (error); bp = NULL; error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp); if (error) goto out; #ifdef APPLE MALLOC(ntmp, struct ntfsmount *, sizeof *ntmp, M_NTFSMNT, M_WAITOK); bzero(ntmp, sizeof *ntmp); #else ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO); #endif bootfile_to_host((struct bootfile *) bp->b_data, &ntmp->ntm_bootfile); brelse( bp ); bp = NULL; if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { error = EINVAL; dprintf(("ntfs_mountfs: invalid boot block\n")); goto out; } { /* Calculate number of sectors per MFT record */ int8_t cpr = ntmp->ntm_mftrecsz; if( cpr > 0 ) ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr; else ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps; } dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n", ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media, ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec)); dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n", (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn)); ntmp->ntm_mountp = mp; ntmp->ntm_dev = dev; ntmp->ntm_devvp = devvp; ntmp->ntm_uid = argsp->uid; ntmp->ntm_gid = argsp->gid; ntmp->ntm_mode = argsp->mode; ntmp->ntm_flag = argsp->flag; /* Copy in the 8-bit to Unicode conversion table */ if (argsp->flag & NTFSMNT_U2WTABLE) { ntfs_82u_init(ntmp, argsp->u2w); } else { ntfs_82u_init(ntmp, NULL); } /* Initialize Unicode to 8-bit table from 8toU table */ ntfs_u28_init(ntmp, ntmp->ntm_82u); mp->mnt_data = (qaddr_t)ntmp; dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n", (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.", (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"", ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode)); /* * We read in some system nodes to do not allow * reclaim them and to have everytime access to them. */ { ino_t pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; for (i=0; i<3; i++) { #ifdef APPLE error = VFS_VGET(mp, &pi[i], &(ntmp->ntm_sysvn[pi[i]])); #else error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE, &(ntmp->ntm_sysvn[pi[i]])); #endif if(error) goto out1; #ifdef APPLE ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM; #else ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; #endif VREF(ntmp->ntm_sysvn[pi[i]]); vput(ntmp->ntm_sysvn[pi[i]]); } } /* read the Unicode lowercase --> uppercase translation table, * if necessary */ if ((error = ntfs_toupper_use(mp, ntmp))) goto out1; /* * Scan $BitMap and count free clusters */ error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree); if(error) goto out1; /* * Read and translate to internal format attribute * definition file. */ { int num,j; struct attrdef ad; #ifdef APPLE ino_t attrdef_ino = NTFS_ATTRDEFINO; #endif /* Open $AttrDef */ #ifdef APPLE error = VFS_VGET(mp, &attrdef_ino, &vp ); #else error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp ); #endif if(error) goto out1; /* Count valid entries */ for(num=0;;num++) { error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, num * sizeof(ad), sizeof(ad), &ad, NULL); if (error) goto out1; if (ad.ad_name[0] == 0) break; } /* Alloc memory for attribute definitions */ MALLOC(ntmp->ntm_ad, struct ntvattrdef *, num * sizeof(struct ntvattrdef), M_NTFSMNT, M_WAITOK); ntmp->ntm_adnum = num; /* Read them and translate */ for(i=0;intm_ad[i].ad_name[j] = le16toh(ad.ad_name[j]); } while(ad.ad_name[j++]); ntmp->ntm_ad[i].ad_namelen = j - 1; ntmp->ntm_ad[i].ad_type = le32toh(ad.ad_type); } vput(vp); } #ifdef APPLE mp->mnt_stat.f_fsid.val[0] = (long) dev; #else mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); #endif mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; mp->mnt_maxsymlinklen = 0; mp->mnt_flag |= MNT_LOCAL; #ifdef APPLE devvp->v_specflags |= SI_MOUNTEDON; #else devvp->v_rdev->si_mountpoint = mp; #endif return (0); out1: for(i=0;intm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); if (vflush(mp, 0, 0)) dprintf(("ntfs_mountfs: vflush failed\n")); out: #ifdef APPLE devvp->v_specflags &= ~SI_MOUNTEDON; #else devvp->v_rdev->si_mountpoint = NULL; #endif if (bp) brelse(bp); (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, td); if (ntmp) { if (ntmp->ntm_ad) FREE(ntmp->ntm_ad, M_NTFSMNT); if (ntmp->ntm_82u) FREE(ntmp->ntm_82u, M_TEMP); if (ntmp->ntm_u28) FREE(ntmp->ntm_u28, M_TEMP); FREE(ntmp, M_NTFSMNT); mp->mnt_data = (qaddr_t) 0; } return (error); } static int ntfs_unmount( struct mount *mp, int mntflags, #ifdef APPLE struct proc *td) #else struct thread *td) #endif { register struct ntfsmount *ntmp; int error, ronly = 0, flags, i; dprintf(("ntfs_unmount: unmounting...\n")); ntmp = VFSTONTFS(mp); flags = 0; if(mntflags & MNT_FORCE) flags |= FORCECLOSE; dprintf(("ntfs_unmount: vflushing...\n")); error = vflush(mp, 0, flags | SKIPSYSTEM); if (error) { printf("ntfs_unmount: vflush failed: %d\n",error); return (error); } /* Check if only system vnodes are rest */ for(i=0;intm_sysvn[i]) && (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); /* Dereference all system vnodes */ for(i=0;intm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); /* vflush system vnodes */ error = vflush(mp, 0, flags); if (error) printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error); /* Check if the type of device node isn't VBAD before * touching v_specinfo. If the device vnode is revoked, the * field is NULL and touching it causes null pointer derefercence. */ if (ntmp->ntm_devvp->v_type != VBAD) #ifdef APPLE ntmp->ntm_devvp->v_specflags &= ~SI_MOUNTEDON; #else ntmp->ntm_devvp->v_rdev->si_mountpoint = NULL; #endif vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, td, 0, 0); error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, td); vrele(ntmp->ntm_devvp); /* free the toupper table, if this has been last mounted ntfs volume */ ntfs_toupper_unuse(); dprintf(("ntfs_umount: freeing memory...\n")); ntfs_u28_uninit(ntmp); ntfs_82u_uninit(ntmp); mp->mnt_data = (qaddr_t)0; mp->mnt_flag &= ~MNT_LOCAL; FREE(ntmp->ntm_ad, M_NTFSMNT); FREE(ntmp, M_NTFSMNT); return (error); } static int ntfs_root( struct mount *mp, struct vnode **vpp ) { struct vnode *nvp; int error = 0; #ifdef APPLE ino_t root_ino = NTFS_ROOTINO; #endif dprintf(("ntfs_root(): sysvn: %p\n", VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); #ifdef APPLE error = VFS_VGET(mp, &root_ino, &nvp); #else error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp); #endif if(error) { printf("ntfs_root: VFS_VGET failed: %d\n",error); return (error); } *vpp = nvp; return (0); } int ntfs_calccfree( struct ntfsmount *ntmp, cn_t *cfreep) { struct vnode *vp; u_int8_t *tmp; int j, error; long cfree = 0; size_t bmsize, i; vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; bmsize = VTOF(vp)->f_size; MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK); error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, 0, bmsize, tmp, NULL); if (error) goto out; for(i=0;intm_sysvn[NTFS_MFTINO])->f_size; mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; sbp->f_type = mp->mnt_vfc->vfc_typenum; sbp->f_bsize = ntmp->ntm_bps; sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc; sbp->f_blocks = ntmp->ntm_bootfile.bf_spv; sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree); sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec; sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + sbp->f_ffree; if (sbp != &mp->mnt_stat) { bcopy((caddr_t)mp->mnt_stat.f_mntonname, (caddr_t)&sbp->f_mntonname[0], MNAMELEN); bcopy((caddr_t)mp->mnt_stat.f_mntfromname, (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); } sbp->f_flags = mp->mnt_flag; return (0); } /*ARGSUSED*/ static int ntfs_fhtovp( struct mount *mp, struct fid *fhp, #ifdef APPLE struct mbuf *nam, struct vnode **vpp, int *exflagsp, struct ucred **credanonp) #else struct vnode **vpp) #endif { struct vnode *nvp; struct ntfid *ntfhp = (struct ntfid *)fhp; int error; ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino)); #ifdef APPLE if ((error = VFS_VGET(mp, &ntfhp->ntfid_ino, &nvp)) != 0) { #else if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) { #endif *vpp = NULLVP; return (error); } /* XXX as unlink/rmdir/mkdir/creat are not currently possible * with NTFS, we don't need to check anything else for now */ *vpp = nvp; return (0); } static int ntfs_vptofh( struct vnode *vp, struct fid *fhp) { register struct ntnode *ntp; register struct ntfid *ntfhp; ddprintf(("ntfs_fhtovp(): %p\n", vp)); ntp = VTONT(vp); ntfhp = (struct ntfid *)fhp; ntfhp->ntfid_len = sizeof(struct ntfid); ntfhp->ntfid_ino = ntp->i_number; /* ntfhp->ntfid_gen = ntp->i_gen; */ return (0); } int ntfs_vgetex( struct mount *mp, ino_t ino, u_int32_t attrtype, char *attrname, u_long lkflags, u_long flags, #ifdef APPLE struct proc *td, #else struct thread *td, #endif struct vnode **vpp) { int error; register struct ntfsmount *ntmp; struct ntnode *ip; struct fnode *fp; struct vnode *vp; enum vtype f_type; dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n", ino, attrtype, attrname?attrname:"", (u_long)lkflags, (u_long)flags )); ntmp = VFSTONTFS(mp); *vpp = NULL; /* Get ntnode */ error = ntfs_ntlookup(ntmp, ino, &ip); if (error) { printf("ntfs_vget: ntfs_ntget failed\n"); return (error); } /* It may be not initialized fully, so force load it */ if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) { error = ntfs_loadntnode(ntmp, ip); if(error) { printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n", ip->i_number); ntfs_ntput(ip); return (error); } } /* Find or create an fnode for desired attribute */ error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp); if (error) { printf("ntfs_vget: ntfs_fget failed\n"); ntfs_ntput(ip); return (error); } /* Make sure the fnode's sizes are initialized */ f_type = VNON; if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) { if ((ip->i_frflag & NTFS_FRFLAG_DIR) && (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) { f_type = VDIR; } else if (flags & VG_EXT) { f_type = VNON; fp->f_size = fp->f_allocated = 0; } else { f_type = VREG; error = ntfs_filesize(ntmp, fp, &fp->f_size, &fp->f_allocated); if (error) { ntfs_ntput(ip); return (error); } } fp->f_flag |= FN_VALID; } /* See if we already have a vnode for the file */ if (FTOV(fp)) { vget(FTOV(fp), lkflags, td); *vpp = FTOV(fp); ntfs_ntput(ip); #ifdef APPLE UBCINFOCHECK("ntfs_vgetex", *vpp); #endif return (0); } /* Must create a new vnode */ error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp); if(error) { ntfs_frele(fp); ntfs_ntput(ip); return (error); } dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino)); #ifdef APPLE lockinit(&fp->f_lock, PINOD, "fnode", 0, 0); #else lockinit(&fp->f_lock, PINOD, "fnode", VLKTIMEOUT, 0); #endif fp->f_vp = vp; vp->v_data = fp; vp->v_type = f_type; #ifdef APPLE if (ino == NTFS_ROOTINO) vp->v_flag |= VROOT; if (ino < 24) /*ее use NTFS_SYSNODENUM instead? */ vp->v_flag |= VSYSTEM; #else if (ino == NTFS_ROOTINO) vp->v_vflag |= VV_ROOT; #endif ntfs_ntput(ip); if (lkflags & LK_TYPE_MASK) { error = vn_lock(vp, lkflags, td); if (error) { vput(vp); return (error); } } *vpp = vp; #ifdef APPLE if (vp->v_type == VREG && (UBCINFOMISSING(vp) || UBCINFORECLAIMED(vp))) ubc_info_init(vp); #endif return (0); } #ifdef APPLE static int ntfs_vget( struct mount *mp, void *ino, struct vnode **vpp) { return ntfs_vgetex(mp, *(ino_t*)ino, NTFS_A_DATA, NULL, LK_EXCLUSIVE, 0, current_proc(), vpp); } #else static int ntfs_vget( struct mount *mp, ino_t ino, int lkflags, struct vnode **vpp) { return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0, curthread, vpp); } #endif #ifdef APPLE /* * Make a filesystem operational. * Nothing to do at the moment. */ /* ARGSUSED */ static int ntfs_start(mp, flags, p) struct mount *mp; int flags; struct proc *p; { return 0; } /* * Do operations associated with quotas */ int ntfs_quotactl(mp, cmds, uid, arg, p) struct mount *mp; int cmds; uid_t uid; caddr_t arg; struct proc *p; { return EOPNOTSUPP; } int ntfs_sync (mp, waitfor, cred, proc) struct mount *mp; int waitfor; struct ucred *cred; struct proc *proc; { return 0; } /* * Fast-FileSystem only? */ static int ntfs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) int * name; u_int namelen; void* oldp; size_t * oldlenp; void * newp; size_t newlen; struct proc * p; { return (EOPNOTSUPP); } #endif /* APPLE */ #ifdef APPLE static struct vfsops ntfs_vfsops = { ntfs_mount, ntfs_start, ntfs_unmount, ntfs_root, ntfs_quotactl, ntfs_statfs, ntfs_sync, ntfs_vget, ntfs_fhtovp, ntfs_vptofh, ntfs_init, ntfs_sysctl, }; #else static struct vfsops ntfs_vfsops = { ntfs_mount, vfs_stdstart, ntfs_unmount, ntfs_root, vfs_stdquotactl, ntfs_statfs, vfs_stdsync, ntfs_vget, ntfs_fhtovp, vfs_stdcheckexp, ntfs_vptofh, ntfs_init, ntfs_uninit, vfs_stdextattrctl, }; VFS_SET(ntfs_vfsops, ntfs, 0); #endif /* APPLE */ #ifdef APPLE static char ntfs_name[MFSNAMELEN] = "ntfs"; struct kmod_info_t *ntfs_kmod_infop; typedef int (*PFI)(); extern int vfs_opv_numops; extern struct vnodeopv_desc ntfs_vnodeop_opv_desc; __private_extern__ int ntfs_kext_start(struct kmod_info_t *ki, void *data) { #pragma unused(data) struct vfsconf *newvfsconf = NULL; int j; int (***opv_desc_vector_p)(void *); int (**opv_desc_vector)(void *); struct vnodeopv_entry_desc *opve_descp; int error = 0; boolean_t funnel_state; funnel_state = thread_funnel_set(kernel_flock, TRUE); ntfs_kmod_infop = ki; /* * This routine is responsible for all the initialization that would * ordinarily be done as part of the system startup; */ MALLOC(newvfsconf, void *, sizeof(struct vfsconf), M_TEMP, M_WAITOK); bzero(newvfsconf, sizeof(struct vfsconf)); newvfsconf->vfc_vfsops = &ntfs_vfsops; strncpy(&newvfsconf->vfc_name[0], ntfs_name, MFSNAMELEN); newvfsconf->vfc_typenum = maxvfsconf++; newvfsconf->vfc_refcount = 0; newvfsconf->vfc_flags = MNT_LOCAL; newvfsconf->vfc_mountroot = NULL; newvfsconf->vfc_next = NULL; opv_desc_vector_p = ntfs_vnodeop_opv_desc.opv_desc_vector_p; /* * Allocate and init the vector. * Also handle backwards compatibility. */ /* XXX - shouldn't be M_TEMP */ MALLOC(*opv_desc_vector_p, PFI *, vfs_opv_numops * sizeof(PFI), M_TEMP, M_WAITOK); bzero(*opv_desc_vector_p, vfs_opv_numops*sizeof(PFI)); opv_desc_vector = *opv_desc_vector_p; for (j = 0; ntfs_vnodeop_opv_desc.opv_desc_ops[j].opve_op; j++) { opve_descp = &(ntfs_vnodeop_opv_desc.opv_desc_ops[j]); /* * Sanity check: is this operation listed * in the list of operations? We check this * by seeing if its offest is zero. Since * the default routine should always be listed * first, it should be the only one with a zero * offset. Any other operation with a zero * offset is probably not listed in * vfs_op_descs, and so is probably an error. * * A panic here means the layer programmer * has committed the all-too common bug * of adding a new operation to the layer's * list of vnode operations but * not adding the operation to the system-wide * list of supported operations. */ if (opve_descp->opve_op->vdesc_offset == 0 && opve_descp->opve_op->vdesc_offset != VOFFSET(vop_default)) { printf("load_ntfs: operation %s not listed in %s.\n", opve_descp->opve_op->vdesc_name, "vfs_op_descs"); panic("load_ntfs: bad operation"); } /* * Fill in this entry. */ opv_desc_vector[opve_descp->opve_op->vdesc_offset] = opve_descp->opve_impl; } /* * Finally, go back and replace unfilled routines * with their default. (Sigh, an O(n^3) algorithm. I * could make it better, but that'd be work, and n is small.) */ opv_desc_vector_p = ntfs_vnodeop_opv_desc.opv_desc_vector_p; /* * Force every operations vector to have a default routine. */ opv_desc_vector = *opv_desc_vector_p; if (opv_desc_vector[VOFFSET(vop_default)] == NULL) panic("ntfs_kext_start: operation vector without default routine."); for (j = 0; j < vfs_opv_numops; j++) if (opv_desc_vector[j] == NULL) opv_desc_vector[j] = opv_desc_vector[VOFFSET(vop_default)]; /* Ok, vnode vectors are set up, vfs vectors are set up, add it in */ error = vfsconf_add(newvfsconf); if (newvfsconf) FREE(newvfsconf, M_TEMP); thread_funnel_set(kernel_flock, funnel_state); return (error == 0 ? KERN_SUCCESS : KERN_FAILURE); } __private_extern__ int ntfs_kext_stop(kmod_info_t *ki, void *data) { #pragma unused(ki) #pragma unused(data) boolean_t funnel_state; funnel_state = thread_funnel_set(kernel_flock, TRUE); vfsconf_del(ntfs_name); FREE(*ntfs_vnodeop_opv_desc.opv_desc_vector_p, M_TEMP); thread_funnel_set(kernel_flock, funnel_state); return (KERN_SUCCESS); } #endif APPLE