/* $NetBSD: ntfs_vfsops.c,v 1.107.4.1 2019/10/21 17:01:57 martin 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. * * Id: ntfs_vfsops.c,v 1.7 1999/05/31 11:28:30 phk Exp */ #include __KERNEL_RCSID(0, "$NetBSD: ntfs_vfsops.c,v 1.107.4.1 2019/10/21 17:01:57 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include MODULE(MODULE_CLASS_VFS, ntfs, NULL); MALLOC_JUSTDEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure"); MALLOC_JUSTDEFINE(M_NTFSNTNODE,"NTFS ntnode", "NTFS ntnode information"); MALLOC_JUSTDEFINE(M_NTFSDIR,"NTFS dir", "NTFS dir buffer"); static int ntfs_superblock_validate(struct ntfsmount *); static int ntfs_mount(struct mount *, const char *, void *, size_t *); static int ntfs_root(struct mount *, struct vnode **); static int ntfs_start(struct mount *, int); static int ntfs_statvfs(struct mount *, struct statvfs *); static int ntfs_sync(struct mount *, int, kauth_cred_t); static int ntfs_unmount(struct mount *, int); static int ntfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp); static int ntfs_loadvnode(struct mount *, struct vnode *, const void *, size_t, const void **); static int ntfs_mountfs(struct vnode *, struct mount *, struct ntfs_args *, struct lwp *); static int ntfs_vptofh(struct vnode *, struct fid *, size_t *); static void ntfs_init(void); static void ntfs_reinit(void); static void ntfs_done(void); static int ntfs_fhtovp(struct mount *, struct fid *, struct vnode **); static int ntfs_mountroot(void); static const struct genfs_ops ntfs_genfsops = { .gop_write = genfs_compat_gop_write, }; static struct sysctllog *ntfs_sysctl_log; static int ntfs_mountroot(void) { struct mount *mp; struct lwp *l = curlwp; /* XXX */ int error; struct ntfs_args args; if (device_class(root_device) != DV_DISK) return (ENODEV); if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) { vrele(rootvp); return (error); } args.flag = 0; args.uid = 0; args.gid = 0; args.mode = 0777; if ((error = ntfs_mountfs(rootvp, mp, &args, l)) != 0) { vfs_unbusy(mp); vfs_rele(mp); return (error); } mountlist_append(mp); (void)ntfs_statvfs(mp, &mp->mnt_stat); vfs_unbusy(mp); return (0); } static void ntfs_init(void) { malloc_type_attach(M_NTFSMNT); malloc_type_attach(M_NTFSNTNODE); malloc_type_attach(M_NTFSDIR); malloc_type_attach(M_NTFSNTVATTR); malloc_type_attach(M_NTFSRDATA); malloc_type_attach(M_NTFSDECOMP); malloc_type_attach(M_NTFSRUN); ntfs_nthashinit(); ntfs_toupper_init(); } static void ntfs_reinit(void) { ntfs_nthashreinit(); } static void ntfs_done(void) { ntfs_nthashdone(); malloc_type_detach(M_NTFSMNT); malloc_type_detach(M_NTFSNTNODE); malloc_type_detach(M_NTFSDIR); malloc_type_detach(M_NTFSNTVATTR); malloc_type_detach(M_NTFSRDATA); malloc_type_detach(M_NTFSDECOMP); malloc_type_detach(M_NTFSRUN); } static int ntfs_mount(struct mount *mp, const char *path, void *data, size_t *data_len) { struct lwp *l = curlwp; int err = 0, flags; struct vnode *devvp; struct ntfs_args *args = data; if (args == NULL) return EINVAL; if (*data_len < sizeof *args) return EINVAL; if (mp->mnt_flag & MNT_GETARGS) { struct ntfsmount *ntmp = VFSTONTFS(mp); if (ntmp == NULL) return EIO; args->fspec = NULL; args->uid = ntmp->ntm_uid; args->gid = ntmp->ntm_gid; args->mode = ntmp->ntm_mode; args->flag = ntmp->ntm_flag; *data_len = sizeof *args; return 0; } /* *** * Mounting non-root file system or updating a file system *** */ /* * 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) { printf("ntfs_mount(): MNT_UPDATE not supported\n"); return (EINVAL); } /* * Not an update, or updating the name: look up the name * and verify that it refers to a sensible block device. */ err = namei_simple_user(args->fspec, NSM_FOLLOW_NOEMULROOT, &devvp); if (err) return (err); if (devvp->v_type != VBLK) { err = ENOTBLK; goto fail; } if (bdevsw_lookup(devvp->v_rdev) == NULL) { err = ENXIO; goto fail; } if (mp->mnt_flag & MNT_UPDATE) { #if 0 /* ******************** * UPDATE ******************** */ if (devvp != ntmp->um_devvp) { err = EINVAL; /* needs translation */ goto fail; } /* * Update device name only on success */ err = set_statvfs_info(NULL, UIO_USERSPACE, args->fspec, UIO_USERSPACE, mp->mnt_op->vfs_name, mp, p); if (err) goto fail; vrele(devvp); #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. */ /* Save "last mounted on" info for mount point (NULL pad)*/ err = set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); if (err) goto fail; if (mp->mnt_flag & MNT_RDONLY) flags = FREAD; else flags = FREAD|FWRITE; vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); err = VOP_OPEN(devvp, flags, FSCRED); VOP_UNLOCK(devvp); if (err) goto fail; err = ntfs_mountfs(devvp, mp, args, l); if (err) { vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); (void)VOP_CLOSE(devvp, flags, NOCRED); VOP_UNLOCK(devvp); goto fail; } } /* * 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_STATVFS(mp, &mp->mnt_stat); return (err); fail: vrele(devvp); return (err); } static int ntfs_superblock_validate(struct ntfsmount *ntmp) { /* Sanity checks. XXX: More checks are probably needed. */ if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) { dprintf(("ntfs_superblock_validate: invalid boot block\n")); return EINVAL; } if (ntmp->ntm_bps == 0) { dprintf(("ntfs_superblock_validate: invalid bytes per sector\n")); return EINVAL; } if (ntmp->ntm_spc == 0) { dprintf(("ntfs_superblock_validate: invalid sectors per cluster\n")); return EINVAL; } return 0; } /* * Common code for mount and mountroot */ int ntfs_mountfs(struct vnode *devvp, struct mount *mp, struct ntfs_args *argsp, struct lwp *l) { struct buf *bp; struct ntfsmount *ntmp; dev_t dev = devvp->v_rdev; int error, i; struct vnode *vp; struct vnode_iterator *marker; ntmp = NULL; /* * Flush out any old buffers remaining from a previous use. */ vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0); VOP_UNLOCK(devvp); if (error) return (error); bp = NULL; error = bread(devvp, BBLOCK, BBSIZE, 0, &bp); if (error) goto out; ntmp = malloc(sizeof(*ntmp), M_NTFSMNT, M_WAITOK|M_ZERO); memcpy(&ntmp->ntm_bootfile, bp->b_data, sizeof(struct bootfile)); brelse(bp, 0); bp = NULL; if ((error = ntfs_superblock_validate(ntmp))) goto out; { 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; mp->mnt_data = ntmp; /* set file name encode/decode hooks XXX utf-8 only for now */ ntmp->ntm_wget = ntfs_utf8_wget; ntmp->ntm_wput = ntfs_utf8_wput; ntmp->ntm_wcmp = ntfs_utf8_wcmp; 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. */ { int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO }; for (i = 0; i < 3; i++) { error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]])); if (error) goto out1; ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM; 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; /* Open $AttrDef */ error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp); 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 */ ntmp->ntm_ad = (struct ntvattrdef *) malloc( num * sizeof(struct ntvattrdef), M_NTFSMNT, M_WAITOK); ntmp->ntm_adnum = num; /* Read them and translate */ for (i = 0; i < num; i++) { error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL, i * sizeof(ad), sizeof(ad), &ad, NULL); if (error) goto out1; j = 0; do { ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j]; } while(ad.ad_name[j++]); ntmp->ntm_ad[i].ad_namelen = j - 1; ntmp->ntm_ad[i].ad_type = ad.ad_type; } vput(vp); } mp->mnt_stat.f_fsidx.__fsid_val[0] = dev; mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS); mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; mp->mnt_stat.f_namemax = NTFS_MAXFILENAME; mp->mnt_flag |= MNT_LOCAL; spec_node_setmountedfs(devvp, mp); return (0); out1: for (i = 0; i < NTFS_SYSNODESNUM; i++) if (ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); vfs_vnode_iterator_init(mp, &marker); while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) { if (vrecycle(vp)) continue; panic("%s: cannot recycle vnode %p", __func__, vp); } vfs_vnode_iterator_destroy(marker); out: spec_node_setmountedfs(devvp, NULL); if (bp) brelse(bp, 0); if (error) { if (ntmp) { if (ntmp->ntm_ad) free(ntmp->ntm_ad, M_NTFSMNT); free(ntmp, M_NTFSMNT); } } return (error); } static int ntfs_start(struct mount *mp, int flags) { return (0); } static int ntfs_unmount(struct mount *mp, int mntflags) { struct lwp *l = curlwp; 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, NULLVP, flags | SKIPSYSTEM); if (error) { dprintf(("ntfs_unmount: vflush failed: %d\n",error)); return (error); } /* Check if only system vnodes are rest */ for (i = 0; i < NTFS_SYSNODESNUM; i++) if ((ntmp->ntm_sysvn[i]) && (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY); /* Dereference all system vnodes */ for (i = 0; i < NTFS_SYSNODESNUM; i++) if (ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]); /* vflush system vnodes */ error = vflush(mp, NULLVP, flags); if (error) { panic("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) spec_node_setmountedfs(ntmp->ntm_devvp, NULL); error = vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, l, 0, 0); KASSERT(error == 0); /* lock the device vnode before calling VOP_CLOSE() */ vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY); error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED); KASSERT(error == 0); VOP_UNLOCK(ntmp->ntm_devvp); 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")); mp->mnt_data = NULL; mp->mnt_flag &= ~MNT_LOCAL; free(ntmp->ntm_ad, M_NTFSMNT); free(ntmp, M_NTFSMNT); return (0); } static int ntfs_root(struct mount *mp, struct vnode **vpp) { struct vnode *nvp; int error = 0; dprintf(("ntfs_root(): sysvn: %p\n", VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO])); error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp); 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; cn_t cfree = 0; size_t bmsize, i; vp = ntmp->ntm_sysvn[NTFS_BITMAPINO]; bmsize = VTOF(vp)->f_size; tmp = (u_int8_t *) malloc(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; i < bmsize; i++) for (j = 0; j < 8; j++) if (~tmp[i] & (1 << j)) cfree++; *cfreep = cfree; out: free(tmp, M_TEMP); return(error); } static int ntfs_statvfs(struct mount *mp, struct statvfs *sbp) { struct ntfsmount *ntmp = VFSTONTFS(mp); u_int64_t mftallocated; dprintf(("ntfs_statvfs():\n")); mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated; sbp->f_bsize = ntmp->ntm_bps; sbp->f_frsize = sbp->f_bsize; /* XXX */ 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_favail = sbp->f_bfree / ntmp->ntm_bpmftrec; sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) + sbp->f_ffree; sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */ sbp->f_flag = mp->mnt_flag; copy_statvfs_info(sbp, mp); return (0); } static int ntfs_sync(struct mount *mp, int waitfor, kauth_cred_t cred) { /*dprintf(("ntfs_sync():\n"));*/ return (0); } /*ARGSUSED*/ static int ntfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) { struct ntfid ntfh; int error; if (fhp->fid_len != sizeof(struct ntfid)) return EINVAL; memcpy(&ntfh, fhp, sizeof(ntfh)); ddprintf(("ntfs_fhtovp(): %s: %llu\n", mp->mnt_stat.f_mntonname, (unsigned long long)ntfh.ntfid_ino)); error = ntfs_vgetex(mp, ntfh.ntfid_ino, ntfh.ntfid_attr, "", LK_EXCLUSIVE, vpp); if (error != 0) { *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 */ return (0); } static int ntfs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) { struct ntnode *ntp; struct ntfid ntfh; struct fnode *fn; if (*fh_size < sizeof(struct ntfid)) { *fh_size = sizeof(struct ntfid); return E2BIG; } *fh_size = sizeof(struct ntfid); ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname, vp)); fn = VTOF(vp); ntp = VTONT(vp); memset(&ntfh, 0, sizeof(ntfh)); ntfh.ntfid_len = sizeof(struct ntfid); ntfh.ntfid_ino = ntp->i_number; ntfh.ntfid_attr = fn->f_attrtype; #ifdef notyet ntfh.ntfid_gen = ntp->i_gen; #endif memcpy(fhp, &ntfh, sizeof(ntfh)); return (0); } static int ntfs_loadvnode(struct mount *mp, struct vnode *vp, const void *key, size_t key_len, const void **new_key) { int error; struct ntvattr *vap; struct ntkey small_key, *ntkey; struct ntfsmount *ntmp; struct ntnode *ip; struct fnode *fp = NULL; enum vtype f_type = VBAD; if (key_len <= sizeof(small_key)) ntkey = &small_key; else ntkey = kmem_alloc(key_len, KM_SLEEP); memcpy(ntkey, key, key_len); dprintf(("ntfs_loadvnode: ino: %llu, attr: 0x%x:%s", (unsigned long long)ntkey->k_ino, ntkey->k_attrtype, ntkey->k_attrname)); ntmp = VFSTONTFS(mp); /* Get ntnode */ error = ntfs_ntlookup(ntmp, ntkey->k_ino, &ip); if (error) { printf("ntfs_loadvnode: ntfs_ntget failed\n"); goto out; } /* It may be not initialized fully, so force load it */ if (!(ip->i_flag & IN_LOADED)) { error = ntfs_loadntnode(ntmp, ip); if (error) { printf("ntfs_loadvnode: CAN'T LOAD ATTRIBUTES FOR INO:" " %llu\n", (unsigned long long)ip->i_number); ntfs_ntput(ip); goto out; } } /* Setup fnode */ fp = kmem_zalloc(sizeof(*fp), KM_SLEEP); dprintf(("%s: allocating fnode: %p\n", __func__, fp)); error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap); if (error) { printf("%s: attr %x for ino %" PRId64 ": error %d\n", __func__, NTFS_A_NAME, ip->i_number, error); ntfs_ntput(ip); goto out; } fp->f_fflag = vap->va_a_name->n_flag; fp->f_pnumber = vap->va_a_name->n_pnumber; fp->f_times = vap->va_a_name->n_times; ntfs_ntvattrrele(vap); if ((ip->i_frflag & NTFS_FRFLAG_DIR) && (ntkey->k_attrtype == NTFS_A_DATA && strcmp(ntkey->k_attrname, "") == 0)) { f_type = VDIR; } else { f_type = VREG; error = ntfs_ntvattrget(ntmp, ip, ntkey->k_attrtype, ntkey->k_attrname, 0, &vap); if (error == 0) { fp->f_size = vap->va_datalen; fp->f_allocated = vap->va_allocated; ntfs_ntvattrrele(vap); } else if (ntkey->k_attrtype == NTFS_A_DATA && strcmp(ntkey->k_attrname, "") == 0 && error == ENOENT) { fp->f_size = 0; fp->f_allocated = 0; error = 0; } else { printf("%s: attr %x for ino %" PRId64 ": error %d\n", __func__, ntkey->k_attrtype, ip->i_number, error); ntfs_ntput(ip); goto out; } } if (key_len <= sizeof(fp->f_smallkey)) fp->f_key = &fp->f_smallkey; else fp->f_key = kmem_alloc(key_len, KM_SLEEP); fp->f_ip = ip; fp->f_ino = ip->i_number; strcpy(fp->f_attrname, ntkey->k_attrname); fp->f_attrtype = ntkey->k_attrtype; fp->f_vp = vp; vp->v_data = fp; vp->v_tag = VT_NTFS; vp->v_type = f_type; vp->v_op = ntfs_vnodeop_p; ntfs_ntref(ip); vref(ip->i_devvp); genfs_node_init(vp, &ntfs_genfsops); if (ip->i_number == NTFS_ROOTINO) vp->v_vflag |= VV_ROOT; uvm_vnp_setsize(vp, fp->f_size); ntfs_ntput(ip); *new_key = fp->f_key; fp = NULL; out: if (ntkey != &small_key) kmem_free(ntkey, key_len); if (fp) kmem_free(fp, sizeof(*fp)); return error; } static int ntfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp) { return ntfs_vgetex(mp, ino, NTFS_A_DATA, "", LK_EXCLUSIVE, vpp); } int ntfs_vgetex(struct mount *mp, ino_t ino, u_int32_t attrtype, const char *attrname, u_long lkflags, struct vnode **vpp) { const int attrlen = strlen(attrname); int error; struct ntkey small_key, *ntkey; if (NTKEY_SIZE(attrlen) <= sizeof(small_key)) ntkey = &small_key; else ntkey = malloc(NTKEY_SIZE(attrlen), M_TEMP, M_WAITOK); ntkey->k_ino = ino; ntkey->k_attrtype = attrtype; strcpy(ntkey->k_attrname, attrname); error = vcache_get(mp, ntkey, NTKEY_SIZE(attrlen), vpp); if (error) goto out; if ((lkflags & (LK_SHARED | LK_EXCLUSIVE)) != 0) { error = vn_lock(*vpp, lkflags); if (error) { vrele(*vpp); *vpp = NULL; } } out: if (ntkey != &small_key) free(ntkey, M_TEMP); return error; } extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc; const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = { &ntfs_vnodeop_opv_desc, NULL, }; struct vfsops ntfs_vfsops = { .vfs_name = MOUNT_NTFS, .vfs_min_mount_data = sizeof (struct ntfs_args), .vfs_mount = ntfs_mount, .vfs_start = ntfs_start, .vfs_unmount = ntfs_unmount, .vfs_root = ntfs_root, .vfs_quotactl = (void *)eopnotsupp, .vfs_statvfs = ntfs_statvfs, .vfs_sync = ntfs_sync, .vfs_vget = ntfs_vget, .vfs_loadvnode = ntfs_loadvnode, .vfs_fhtovp = ntfs_fhtovp, .vfs_vptofh = ntfs_vptofh, .vfs_init = ntfs_init, .vfs_reinit = ntfs_reinit, .vfs_done = ntfs_done, .vfs_mountroot = ntfs_mountroot, .vfs_snapshot = (void *)eopnotsupp, .vfs_extattrctl = vfs_stdextattrctl, .vfs_suspendctl = genfs_suspendctl, .vfs_renamelock_enter = genfs_renamelock_enter, .vfs_renamelock_exit = genfs_renamelock_exit, .vfs_fsync = (void *)eopnotsupp, .vfs_opv_descs = ntfs_vnodeopv_descs }; static int ntfs_modcmd(modcmd_t cmd, void *arg) { int error; switch (cmd) { case MODULE_CMD_INIT: error = vfs_attach(&ntfs_vfsops); if (error != 0) break; sysctl_createv(&ntfs_sysctl_log, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_NODE, "ntfs", SYSCTL_DESCR("NTFS file system"), NULL, 0, NULL, 0, CTL_VFS, 20, CTL_EOL); /* * XXX the "20" above could be dynamic, thereby eliminating * one more instance of the "number to vfs" mapping problem, * but "20" is the order as taken from sys/mount.h */ break; case MODULE_CMD_FINI: error = vfs_detach(&ntfs_vfsops); if (error != 0) break; sysctl_teardown(&ntfs_sysctl_log); break; default: error = ENOTTY; break; } return (error); }