/* $OpenBSD: cd9660_vfsops.c,v 1.84 2017/04/20 14:13:00 visa Exp $ */ /* $NetBSD: cd9660_vfsops.c,v 1.26 1997/06/13 15:38:58 pk Exp $ */ /*- * Copyright (c) 1994 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension * Support code is derived from software contributed to Berkeley * by Atsushi Murai (amurai@spec.co.jp). * * 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. 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. * * @(#)cd9660_vfsops.c 8.9 (Berkeley) 12/5/94 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include const struct vfsops cd9660_vfsops = { cd9660_mount, cd9660_start, cd9660_unmount, cd9660_root, cd9660_quotactl, cd9660_statfs, cd9660_sync, cd9660_vget, cd9660_fhtovp, cd9660_vptofh, cd9660_init, cd9660_sysctl, cd9660_check_export }; /* * Called by vfs_mountroot when iso is going to be mounted as root. */ static int iso_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct iso_args *argp); int iso_disklabelspoof(dev_t dev, void (*strat)(struct buf *), struct disklabel *lp); int cd9660_mountroot(void) { struct mount *mp; extern struct vnode *rootvp; struct proc *p = curproc; /* XXX */ int error; struct iso_args args; /* * Get vnodes for swapdev and rootdev. */ if ((error = bdevvp(swapdev, &swapdev_vp)) || (error = bdevvp(rootdev, &rootvp))) { printf("cd9660_mountroot: can't setup bdevvp's"); return (error); } if ((error = vfs_rootmountalloc("cd9660", "root_device", &mp)) != 0) return (error); args.flags = ISOFSMNT_ROOT; if ((error = iso_mountfs(rootvp, mp, p, &args)) != 0) { mp->mnt_vfc->vfc_refcount--; vfs_unbusy(mp); free(mp, M_MOUNT, 0); return (error); } TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list); (void)cd9660_statfs(mp, &mp->mnt_stat, p); vfs_unbusy(mp); inittodr(0); return (0); } /* * VFS Operations. * * mount system call */ int cd9660_mount(mp, path, data, ndp, p) register struct mount *mp; const char *path; void *data; struct nameidata *ndp; struct proc *p; { struct iso_mnt *imp = NULL; struct iso_args args; struct vnode *devvp; char fspec[MNAMELEN]; int error; if ((mp->mnt_flag & MNT_RDONLY) == 0) return (EROFS); error = copyin(data, &args, sizeof(struct iso_args)); if (error) return (error); /* * 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) { imp = VFSTOISOFS(mp); if (args.fspec == NULL) return (vfs_export(mp, &imp->im_export, &args.export_info)); } /* * Not an update, or updating the name: look up the name * and verify that it refers to a sensible block device. */ error = copyinstr(args.fspec, fspec, sizeof(fspec), NULL); if (error) return (error); NDINIT(ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, fspec, p); if ((error = namei(ndp)) != 0) return (error); devvp = ndp->ni_vp; if (devvp->v_type != VBLK) { vrele(devvp); return (ENOTBLK); } if (major(devvp->v_rdev) >= nblkdev) { vrele(devvp); return (ENXIO); } if ((mp->mnt_flag & MNT_UPDATE) == 0) error = iso_mountfs(devvp, mp, p, &args); else { if (devvp != imp->im_devvp) error = EINVAL; /* needs translation */ else vrele(devvp); } if (error) { vrele(devvp); return (error); } bzero(mp->mnt_stat.f_mntonname, MNAMELEN); strlcpy(mp->mnt_stat.f_mntonname, path, MNAMELEN); bzero(mp->mnt_stat.f_mntfromname, MNAMELEN); strlcpy(mp->mnt_stat.f_mntfromname, fspec, MNAMELEN); bzero(mp->mnt_stat.f_mntfromspec, MNAMELEN); strlcpy(mp->mnt_stat.f_mntfromspec, fspec, MNAMELEN); bcopy(&args, &mp->mnt_stat.mount_info.iso_args, sizeof(args)); cd9660_statfs(mp, &mp->mnt_stat, p); return (0); } /* * Common code for mount and mountroot */ static int iso_mountfs(devvp, mp, p, argp) register struct vnode *devvp; struct mount *mp; struct proc *p; struct iso_args *argp; { register struct iso_mnt *isomp = NULL; struct buf *bp = NULL; struct buf *pribp = NULL, *supbp = NULL; dev_t dev = devvp->v_rdev; int error = EINVAL; int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; extern struct vnode *rootvp; int iso_bsize; int iso_blknum; int joliet_level; struct iso_volume_descriptor *vdp; struct iso_primary_descriptor *pri = NULL; struct iso_supplementary_descriptor *sup = NULL; struct iso_directory_record *rootp; int logical_block_size; int sess; if (!ronly) return (EROFS); /* * 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. */ if ((error = vfs_mountedon(devvp)) != 0) return (error); if (vcount(devvp) > 1 && devvp != rootvp) return (EBUSY); vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p); error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); VOP_UNLOCK(devvp, p); if (error) return (error); error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p); if (error) return (error); /* * This is the "logical sector size". The standard says this * should be 2048 or the physical sector size on the device, * whichever is greater. For now, we'll just use a constant. */ iso_bsize = ISO_DEFAULT_BLOCK_SIZE; if (argp->flags & ISOFSMNT_SESS) { sess = argp->sess; if (sess < 0) sess = 0; } else { sess = 0; error = VOP_IOCTL(devvp, CDIOREADMSADDR, (caddr_t)&sess, 0, FSCRED, p); if (error) sess = 0; } joliet_level = 0; for (iso_blknum = 16; iso_blknum < 100; iso_blknum++) { if ((error = bread(devvp, (iso_blknum + sess) * btodb(iso_bsize), iso_bsize, &bp)) != 0) goto out; vdp = (struct iso_volume_descriptor *)bp->b_data; if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0) { error = EINVAL; goto out; } switch (isonum_711 (vdp->type)){ case ISO_VD_PRIMARY: if (pribp == NULL) { pribp = bp; bp = NULL; pri = (struct iso_primary_descriptor *)vdp; } break; case ISO_VD_SUPPLEMENTARY: if (supbp == NULL) { supbp = bp; bp = NULL; sup = (struct iso_supplementary_descriptor *)vdp; if (!(argp->flags & ISOFSMNT_NOJOLIET)) { if (bcmp(sup->escape, "%/@", 3) == 0) joliet_level = 1; if (bcmp(sup->escape, "%/C", 3) == 0) joliet_level = 2; if (bcmp(sup->escape, "%/E", 3) == 0) joliet_level = 3; if (isonum_711 (sup->flags) & 1) joliet_level = 0; } } break; case ISO_VD_END: goto vd_end; default: break; } if (bp) { brelse(bp); bp = NULL; } } vd_end: if (bp) { brelse(bp); bp = NULL; } if (pri == NULL) { error = EINVAL; goto out; } logical_block_size = isonum_723 (pri->logical_block_size); if (logical_block_size < DEV_BSIZE || logical_block_size > MAXBSIZE || (logical_block_size & (logical_block_size - 1)) != 0) { error = EINVAL; goto out; } rootp = (struct iso_directory_record *)pri->root_directory_record; isomp = malloc(sizeof *isomp, M_ISOFSMNT, M_WAITOK); bzero((caddr_t)isomp, sizeof *isomp); isomp->logical_block_size = logical_block_size; isomp->volume_space_size = isonum_733 (pri->volume_space_size); bcopy (rootp, isomp->root, sizeof isomp->root); isomp->root_extent = isonum_733 (rootp->extent); isomp->root_size = isonum_733 (rootp->size); isomp->joliet_level = 0; /* * Since an ISO9660 multi-session CD can also access previous sessions, * we have to include them into the space considerations. */ isomp->volume_space_size += sess; isomp->im_bmask = logical_block_size - 1; isomp->im_bshift = ffs(logical_block_size) - 1; brelse(pribp); pribp = NULL; mp->mnt_data = isomp; mp->mnt_stat.f_fsid.val[0] = (long)dev; mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; mp->mnt_stat.f_namemax = NAME_MAX; mp->mnt_flag |= MNT_LOCAL; isomp->im_mountp = mp; isomp->im_dev = dev; isomp->im_devvp = devvp; /* Check the Rock Ridge Extension support */ if (!(argp->flags & ISOFSMNT_NORRIP)) { if ((error = bread(isomp->im_devvp, (isomp->root_extent + isonum_711(rootp->ext_attr_length)) << (isomp->im_bshift - DEV_BSHIFT), isomp->logical_block_size, &bp)) != 0) goto out; rootp = (struct iso_directory_record *)bp->b_data; if ((isomp->rr_skip = cd9660_rrip_offset(rootp,isomp)) < 0) { argp->flags |= ISOFSMNT_NORRIP; } else { argp->flags &= ~ISOFSMNT_GENS; } /* * The contents are valid, * but they will get reread as part of another vnode, so... */ brelse(bp); bp = NULL; } isomp->im_flags = argp->flags & (ISOFSMNT_NORRIP | ISOFSMNT_GENS | ISOFSMNT_EXTATT | ISOFSMNT_NOJOLIET); switch (isomp->im_flags & (ISOFSMNT_NORRIP | ISOFSMNT_GENS)) { default: isomp->iso_ftype = ISO_FTYPE_DEFAULT; break; case ISOFSMNT_GENS|ISOFSMNT_NORRIP: isomp->iso_ftype = ISO_FTYPE_9660; break; case 0: isomp->iso_ftype = ISO_FTYPE_RRIP; break; } /* Decide whether to use the Joliet descriptor */ if (isomp->iso_ftype != ISO_FTYPE_RRIP && joliet_level) { rootp = (struct iso_directory_record *) sup->root_directory_record; bcopy(rootp, isomp->root, sizeof isomp->root); isomp->root_extent = isonum_733(rootp->extent); isomp->root_size = isonum_733(rootp->size); isomp->joliet_level = joliet_level; } if (supbp) { brelse(supbp); supbp = NULL; } devvp->v_specmountpoint = mp; return (0); out: if (devvp->v_specinfo) devvp->v_specmountpoint = NULL; if (bp) brelse(bp); if (supbp) brelse(supbp); vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p); VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); VOP_UNLOCK(devvp, p); if (isomp) { free((caddr_t)isomp, M_ISOFSMNT, 0); mp->mnt_data = NULL; } return (error); } /* * Test to see if the device is an ISOFS filesystem. */ int iso_disklabelspoof(dev, strat, lp) dev_t dev; void (*strat)(struct buf *); register struct disklabel *lp; { struct buf *bp = NULL; struct iso_volume_descriptor *vdp; struct iso_primary_descriptor *pri; int logical_block_size; int error = EINVAL; int iso_blknum; int i; bp = geteblk(ISO_DEFAULT_BLOCK_SIZE); bp->b_dev = dev; for (iso_blknum = 16; iso_blknum < 100; iso_blknum++) { bp->b_blkno = iso_blknum * btodb(ISO_DEFAULT_BLOCK_SIZE); bp->b_bcount = ISO_DEFAULT_BLOCK_SIZE; CLR(bp->b_flags, B_READ | B_WRITE | B_DONE); SET(bp->b_flags, B_BUSY | B_READ | B_RAW); /*printf("d_secsize %d iso_blknum %d b_blkno %d bcount %d\n", lp->d_secsize, iso_blknum, bp->b_blkno, bp->b_bcount);*/ (*strat)(bp); if (biowait(bp)) goto out; vdp = (struct iso_volume_descriptor *)bp->b_data; /*printf("%2x%2x%2x type %2x\n", vdp->id[0], vdp->id[1], vdp->id[2], isonum_711(vdp->type));*/ if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0 || isonum_711 (vdp->type) == ISO_VD_END) goto out; if (isonum_711 (vdp->type) == ISO_VD_PRIMARY) break; } if (isonum_711 (vdp->type) != ISO_VD_PRIMARY) goto out; pri = (struct iso_primary_descriptor *)vdp; logical_block_size = isonum_723 (pri->logical_block_size); if (logical_block_size < DEV_BSIZE || logical_block_size > MAXBSIZE || (logical_block_size & (logical_block_size - 1)) != 0) goto out; /* * build a disklabel for the CD */ strncpy(lp->d_typename, pri->volume_id, sizeof lp->d_typename); strncpy(lp->d_packname, pri->volume_id+16, sizeof lp->d_packname); for (i = 0; i < MAXPARTITIONS; i++) { DL_SETPSIZE(&lp->d_partitions[i], 0); DL_SETPOFFSET(&lp->d_partitions[i], 0); } DL_SETPOFFSET(&lp->d_partitions[0], 0); DL_SETPSIZE(&lp->d_partitions[0], DL_GETDSIZE(lp)); lp->d_partitions[0].p_fstype = FS_ISO9660; DL_SETPOFFSET(&lp->d_partitions[RAW_PART], 0); DL_SETPSIZE(&lp->d_partitions[RAW_PART], DL_GETDSIZE(lp)); lp->d_partitions[RAW_PART].p_fstype = FS_ISO9660; lp->d_npartitions = MAXPARTITIONS; lp->d_bbsize = 8192; /* fake */ lp->d_sbsize = 64*1024; /* fake */ lp->d_version = 1; lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = dkcksum(lp); error = 0; out: bp->b_flags |= B_INVAL; brelse(bp); return (error); } /* * Make a filesystem operational. * Nothing to do at the moment. */ /* ARGSUSED */ int cd9660_start(mp, flags, p) struct mount *mp; int flags; struct proc *p; { return (0); } /* * unmount system call */ int cd9660_unmount(mp, mntflags, p) struct mount *mp; int mntflags; struct proc *p; { register struct iso_mnt *isomp; int error, flags = 0; if (mntflags & MNT_FORCE) flags |= FORCECLOSE; #if 0 mntflushbuf(mp, 0); if (mntinvalbuf(mp)) return (EBUSY); #endif if ((error = vflush(mp, NULLVP, flags)) != 0) return (error); isomp = VFSTOISOFS(mp); isomp->im_devvp->v_specmountpoint = NULL; vn_lock(isomp->im_devvp, LK_EXCLUSIVE | LK_RETRY, p); (void)VOP_CLOSE(isomp->im_devvp, FREAD, NOCRED, p); vput(isomp->im_devvp); free((caddr_t)isomp, M_ISOFSMNT, 0); mp->mnt_data = NULL; mp->mnt_flag &= ~MNT_LOCAL; return (0); } /* * Return root of a filesystem */ int cd9660_root(mp, vpp) struct mount *mp; struct vnode **vpp; { struct iso_mnt *imp = VFSTOISOFS(mp); struct iso_directory_record *dp = (struct iso_directory_record *)imp->root; cdino_t ino = isodirino(dp, imp); /* * With RRIP we must use the `.' entry of the root directory. * Simply tell vget, that it's a relocated directory. */ return (cd9660_vget_internal(mp, ino, vpp, imp->iso_ftype == ISO_FTYPE_RRIP, dp)); } /* * Do operations associated with quotas, not supported */ /* ARGSUSED */ int cd9660_quotactl(mp, cmd, uid, arg, p) struct mount *mp; int cmd; uid_t uid; caddr_t arg; struct proc *p; { return (EOPNOTSUPP); } /* * Get file system statistics. */ int cd9660_statfs(mp, sbp, p) struct mount *mp; register struct statfs *sbp; struct proc *p; { register struct iso_mnt *isomp; isomp = VFSTOISOFS(mp); sbp->f_bsize = isomp->logical_block_size; sbp->f_iosize = sbp->f_bsize; /* XXX */ sbp->f_blocks = isomp->volume_space_size; sbp->f_bfree = 0; /* total free blocks */ sbp->f_bavail = 0; /* blocks free for non superuser */ sbp->f_files = 0; /* total files */ sbp->f_ffree = 0; /* free file nodes */ sbp->f_favail = 0; /* file nodes free for non superuser */ copy_statfs_info(sbp, mp); return (0); } /* ARGSUSED */ int cd9660_sync(mp, waitfor, cred, p) struct mount *mp; int waitfor; struct ucred *cred; struct proc *p; { return (0); } /* * File handle to vnode * * Have to be really careful about stale file handles: * - check that the inode number is in range * - call iget() to get the locked inode * - check for an unallocated inode (i_mode == 0) * - check that the generation number matches */ struct ifid { ushort ifid_len; ushort ifid_pad; int ifid_ino; long ifid_start; }; /* ARGSUSED */ int cd9660_fhtovp(mp, fhp, vpp) register struct mount *mp; struct fid *fhp; struct vnode **vpp; { struct ifid *ifhp = (struct ifid *)fhp; register struct iso_node *ip; struct vnode *nvp; int error; #ifdef ISOFS_DBG printf("fhtovp: ino %d, start %ld\n", ifhp->ifid_ino, ifhp->ifid_start); #endif if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) { *vpp = NULLVP; return (error); } ip = VTOI(nvp); if (ip->inode.iso_mode == 0) { vput(nvp); *vpp = NULLVP; return (ESTALE); } *vpp = nvp; return (0); } int cd9660_vget(mp, ino, vpp) struct mount *mp; ino_t ino; struct vnode **vpp; { if (ino > (cdino_t)-1) panic("cd9660_vget: alien ino_t %llu", (unsigned long long)ino); /* * XXXX * It would be nice if we didn't always set the `relocated' flag * and force the extra read, but I don't want to think about fixing * that right now. */ return (cd9660_vget_internal(mp, ino, vpp, #if 0 VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP, #else 0, #endif NULL)); } int cd9660_vget_internal(mp, ino, vpp, relocated, isodir) struct mount *mp; cdino_t ino; struct vnode **vpp; int relocated; struct iso_directory_record *isodir; { register struct iso_mnt *imp; struct iso_node *ip; struct buf *bp; struct vnode *vp, *nvp; dev_t dev; int error; retry: imp = VFSTOISOFS(mp); dev = imp->im_dev; if ((*vpp = cd9660_ihashget(dev, ino)) != NULLVP) return (0); /* Allocate a new vnode/iso_node. */ if ((error = getnewvnode(VT_ISOFS, mp, &cd9660_vops, &vp)) != 0) { *vpp = NULLVP; return (error); } ip = malloc(sizeof(*ip), M_ISOFSNODE, M_WAITOK | M_ZERO); rrw_init_flags(&ip->i_lock, "isoinode", RWL_DUPOK); vp->v_data = ip; ip->i_vnode = vp; ip->i_dev = dev; ip->i_number = ino; /* * Put it onto its hash chain and lock it so that other requests for * this inode will block if they arrive while we are sleeping waiting * for old data structures to be purged or for the contents of the * disk portion of this inode to be read. */ error = cd9660_ihashins(ip); if (error) { vrele(vp); if (error == EEXIST) goto retry; return (error); } if (isodir == 0) { int lbn, off; lbn = lblkno(imp, ino); if (lbn >= imp->volume_space_size) { vput(vp); printf("fhtovp: lbn exceed volume space %d\n", lbn); return (ESTALE); } off = blkoff(imp, ino); if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) { vput(vp); printf("fhtovp: crosses block boundary %d\n", off + ISO_DIRECTORY_RECORD_SIZE); return (ESTALE); } error = bread(imp->im_devvp, lbn << (imp->im_bshift - DEV_BSHIFT), imp->logical_block_size, &bp); if (error) { vput(vp); brelse(bp); printf("fhtovp: bread error %d\n",error); return (error); } isodir = (struct iso_directory_record *)(bp->b_data + off); if (off + isonum_711(isodir->length) > imp->logical_block_size) { vput(vp); if (bp != 0) brelse(bp); printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n", off +isonum_711(isodir->length), off, isonum_711(isodir->length)); return (ESTALE); } #if 0 if (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) { if (bp != 0) brelse(bp); printf("fhtovp: file start miss %d vs %d\n", isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length), ifhp->ifid_start); return (ESTALE); } #endif } else bp = 0; ip->i_mnt = imp; ip->i_devvp = imp->im_devvp; vref(ip->i_devvp); if (relocated) { /* * On relocated directories we must * read the `.' entry out of a dir. */ ip->iso_start = ino >> imp->im_bshift; if (bp != 0) brelse(bp); if ((error = cd9660_bufatoff(ip, (off_t)0, NULL, &bp)) != 0) { vput(vp); return (error); } isodir = (struct iso_directory_record *)bp->b_data; } ip->iso_extent = isonum_733(isodir->extent); ip->i_size = (u_int32_t) isonum_733(isodir->size); ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent; /* * Setup time stamp, attribute */ vp->v_type = VNON; switch (imp->iso_ftype) { default: /* ISO_FTYPE_9660 */ { struct buf *bp2; int off; if ((imp->im_flags & ISOFSMNT_EXTATT) && (off = isonum_711(isodir->ext_attr_length))) cd9660_bufatoff(ip, (off_t)-(off << imp->im_bshift), NULL, &bp2); else bp2 = NULL; cd9660_defattr(isodir, ip, bp2); cd9660_deftstamp(isodir, ip, bp2); if (bp2) brelse(bp2); break; } case ISO_FTYPE_RRIP: cd9660_rrip_analyze(isodir, ip, imp); break; } if (bp != 0) brelse(bp); /* * Initialize the associated vnode */ switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) { case VFIFO: #ifdef FIFO vp->v_op = &cd9660_fifovops; break; #else vput(vp); return (EOPNOTSUPP); #endif /* FIFO */ case VCHR: case VBLK: /* * if device, look at device number table for translation */ vp->v_op = &cd9660_specvops; if ((nvp = checkalias(vp, ip->inode.iso_rdev, mp)) != NULL) { /* * Discard unneeded vnode, but save its iso_node. * Note that the lock is carried over in the iso_node */ nvp->v_data = vp->v_data; vp->v_data = NULL; vp->v_op = &spec_vops; vrele(vp); vgone(vp); /* * Reinitialize aliased inode. */ vp = nvp; ip->i_vnode = vp; } break; case VLNK: case VNON: case VSOCK: case VDIR: case VBAD: break; case VREG: uvm_vnp_setsize(vp, ip->i_size); break; } if (ip->iso_extent == imp->root_extent) vp->v_flag |= VROOT; /* * XXX need generation number? */ *vpp = vp; return (0); } /* * Vnode pointer to File handle */ /* ARGSUSED */ int cd9660_vptofh(vp, fhp) struct vnode *vp; struct fid *fhp; { register struct iso_node *ip = VTOI(vp); register struct ifid *ifhp; ifhp = (struct ifid *)fhp; ifhp->ifid_len = sizeof(struct ifid); ifhp->ifid_ino = ip->i_number; ifhp->ifid_start = ip->iso_start; #ifdef ISOFS_DBG printf("vptofh: ino %d, start %ld\n", ifhp->ifid_ino,ifhp->ifid_start); #endif return (0); } /* * Verify a remote client has export rights and return these rights via * exflagsp and credanonp. */ int cd9660_check_export(mp, nam, exflagsp, credanonp) register struct mount *mp; struct mbuf *nam; int *exflagsp; struct ucred **credanonp; { register struct netcred *np; register struct iso_mnt *imp = VFSTOISOFS(mp); /* * Get the export permission structure for this tuple. */ np = vfs_export_lookup(mp, &imp->im_export, nam); if (np == NULL) return (EACCES); *exflagsp = np->netc_exflags; *credanonp = &np->netc_anon; return (0); }