diff options
Diffstat (limited to 'sys/fs/cd9660/cd9660_vfsops.c')
| -rw-r--r-- | sys/fs/cd9660/cd9660_vfsops.c | 832 |
1 files changed, 832 insertions, 0 deletions
diff --git a/sys/fs/cd9660/cd9660_vfsops.c b/sys/fs/cd9660/cd9660_vfsops.c new file mode 100644 index 0000000..1865202 --- /dev/null +++ b/sys/fs/cd9660/cd9660_vfsops.c @@ -0,0 +1,832 @@ +/*- + * 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. + * 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. + * + * @(#)cd9660_vfsops.c 8.18 (Berkeley) 5/22/95 + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/namei.h> +#include <sys/priv.h> +#include <sys/proc.h> +#include <sys/kernel.h> +#include <sys/vnode.h> +#include <sys/mount.h> +#include <sys/bio.h> +#include <sys/buf.h> +#include <sys/cdio.h> +#include <sys/conf.h> +#include <sys/fcntl.h> +#include <sys/malloc.h> +#include <sys/stat.h> +#include <sys/syslog.h> +#include <sys/iconv.h> + +#include <fs/cd9660/iso.h> +#include <fs/cd9660/iso_rrip.h> +#include <fs/cd9660/cd9660_node.h> +#include <fs/cd9660/cd9660_mount.h> + +#include <geom/geom.h> +#include <geom/geom_vfs.h> + +MALLOC_DEFINE(M_ISOFSMNT, "isofs_mount", "ISOFS mount structure"); +MALLOC_DEFINE(M_ISOFSNODE, "isofs_node", "ISOFS vnode private part"); + +struct iconv_functions *cd9660_iconv = NULL; + +static vfs_mount_t cd9660_mount; +static vfs_cmount_t cd9660_cmount; +static vfs_unmount_t cd9660_unmount; +static vfs_root_t cd9660_root; +static vfs_statfs_t cd9660_statfs; +static vfs_vget_t cd9660_vget; +static vfs_fhtovp_t cd9660_fhtovp; + +static struct vfsops cd9660_vfsops = { + .vfs_fhtovp = cd9660_fhtovp, + .vfs_mount = cd9660_mount, + .vfs_cmount = cd9660_cmount, + .vfs_root = cd9660_root, + .vfs_statfs = cd9660_statfs, + .vfs_unmount = cd9660_unmount, + .vfs_vget = cd9660_vget, +}; +VFS_SET(cd9660_vfsops, cd9660, VFCF_READONLY); +MODULE_VERSION(cd9660, 1); + +static int iso_mountfs(struct vnode *devvp, struct mount *mp); + +/* + * VFS Operations. + */ + +static int +cd9660_cmount(struct mntarg *ma, void *data, uint64_t flags) +{ + struct iso_args args; + struct export_args exp; + int error; + + error = copyin(data, &args, sizeof args); + if (error) + return (error); + vfs_oexport_conv(&args.export, &exp); + + ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN); + ma = mount_arg(ma, "export", &exp, sizeof(exp)); + ma = mount_argsu(ma, "cs_disk", args.cs_disk, 64); + ma = mount_argsu(ma, "cs_local", args.cs_local, 64); + ma = mount_argf(ma, "ssector", "%u", args.ssector); + ma = mount_argb(ma, !(args.flags & ISOFSMNT_NORRIP), "norrip"); + ma = mount_argb(ma, args.flags & ISOFSMNT_GENS, "nogens"); + ma = mount_argb(ma, args.flags & ISOFSMNT_EXTATT, "noextatt"); + ma = mount_argb(ma, !(args.flags & ISOFSMNT_NOJOLIET), "nojoliet"); + ma = mount_argb(ma, + args.flags & ISOFSMNT_BROKENJOLIET, "nobrokenjoliet"); + ma = mount_argb(ma, args.flags & ISOFSMNT_KICONV, "nokiconv"); + + error = kernel_mount(ma, flags); + + return (error); +} + +static int +cd9660_mount(struct mount *mp) +{ + struct vnode *devvp; + struct thread *td; + char *fspec; + int error; + accmode_t accmode; + struct nameidata ndp; + struct iso_mnt *imp = NULL; + + td = curthread; + + /* + * Unconditionally mount as read-only. + */ + MNT_ILOCK(mp); + mp->mnt_flag |= MNT_RDONLY; + MNT_IUNLOCK(mp); + + fspec = vfs_getopts(mp->mnt_optnew, "from", &error); + if (error) + return (error); + + imp = VFSTOISOFS(mp); + + if (mp->mnt_flag & MNT_UPDATE) { + if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) + return (0); + } + /* + * 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 | LOCKLEAF, UIO_SYSSPACE, fspec, td); + if ((error = namei(&ndp))) + return (error); + NDFREE(&ndp, NDF_ONLY_PNBUF); + devvp = ndp.ni_vp; + + if (!vn_isdisk(devvp, &error)) { + vput(devvp); + return (error); + } + + /* + * Verify that user has necessary permissions on the device, + * or has superuser abilities + */ + accmode = VREAD; + error = VOP_ACCESS(devvp, accmode, td->td_ucred, td); + if (error) + error = priv_check(td, PRIV_VFS_MOUNT_PERM); + if (error) { + vput(devvp); + return (error); + } + + if ((mp->mnt_flag & MNT_UPDATE) == 0) { + error = iso_mountfs(devvp, mp); + if (error) + vrele(devvp); + } else { + if (devvp != imp->im_devvp) + error = EINVAL; /* needs translation */ + vput(devvp); + } + if (error) + return (error); + vfs_mountedfrom(mp, fspec); + return (0); +} + +/* + * Common code for mount and mountroot + */ +static int +iso_mountfs(devvp, mp) + struct vnode *devvp; + struct mount *mp; +{ + struct iso_mnt *isomp = NULL; + struct buf *bp = NULL; + struct buf *pribp = NULL, *supbp = NULL; + struct cdev *dev; + int error = EINVAL; + int high_sierra = 0; + int iso_bsize; + int iso_blknum; + int joliet_level; + struct iso_volume_descriptor *vdp = NULL; + struct iso_primary_descriptor *pri = NULL; + struct iso_sierra_primary_descriptor *pri_sierra = NULL; + struct iso_supplementary_descriptor *sup = NULL; + struct iso_directory_record *rootp; + int logical_block_size, ssector; + struct g_consumer *cp; + struct bufobj *bo; + char *cs_local, *cs_disk; + + dev = devvp->v_rdev; + dev_ref(dev); + DROP_GIANT(); + g_topology_lock(); + error = g_vfs_open(devvp, &cp, "cd9660", 0); + g_topology_unlock(); + PICKUP_GIANT(); + VOP_UNLOCK(devvp, 0); + if (error) + goto out; + if (devvp->v_rdev->si_iosize_max != 0) + mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max; + if (mp->mnt_iosize_max > MAXPHYS) + mp->mnt_iosize_max = MAXPHYS; + + bo = &devvp->v_bufobj; + + /* This is the "logical sector size". The standard says this + * should be 2048 or the physical sector size on the device, + * whichever is greater. + */ + if ((ISO_DEFAULT_BLOCK_SIZE % cp->provider->sectorsize) != 0) { + error = EINVAL; + goto out; + } + + iso_bsize = cp->provider->sectorsize; + + joliet_level = 0; + if (1 != vfs_scanopt(mp->mnt_optnew, "ssector", "%d", &ssector)) + ssector = 0; + for (iso_blknum = 16 + ssector; + iso_blknum < 100 + ssector; + iso_blknum++) { + if ((error = bread(devvp, iso_blknum * btodb(ISO_DEFAULT_BLOCK_SIZE), + iso_bsize, NOCRED, &bp)) != 0) + goto out; + + vdp = (struct iso_volume_descriptor *)bp->b_data; + if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0) { + if (bcmp (vdp->id_sierra, ISO_SIERRA_ID, + sizeof vdp->id_sierra) != 0) { + error = EINVAL; + goto out; + } else + high_sierra = 1; + } + switch (isonum_711 (high_sierra? vdp->type_sierra: vdp->type)){ + case ISO_VD_PRIMARY: + if (pribp == NULL) { + pribp = bp; + bp = NULL; + pri = (struct iso_primary_descriptor *)vdp; + pri_sierra = + (struct iso_sierra_primary_descriptor *)vdp; + } + break; + + case ISO_VD_SUPPLEMENTARY: + if (supbp == NULL) { + supbp = bp; + bp = NULL; + sup = (struct iso_supplementary_descriptor *)vdp; + + if (!vfs_flagopt(mp->mnt_optnew, "nojoliet", NULL, 0)) { + 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) && + !vfs_flagopt(mp->mnt_optnew, "brokenjoliet", NULL, 0)) + 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 (high_sierra? + pri_sierra->logical_block_size: + 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 *) + (high_sierra? + pri_sierra->root_directory_record: + pri->root_directory_record); + + isomp = malloc(sizeof *isomp, M_ISOFSMNT, M_WAITOK | M_ZERO); + isomp->im_cp = cp; + isomp->im_bo = bo; + isomp->logical_block_size = logical_block_size; + isomp->volume_space_size = + isonum_733 (high_sierra? + pri_sierra->volume_space_size: + pri->volume_space_size); + isomp->joliet_level = 0; + /* + * Since an ISO9660 multi-session CD can also access previous + * sessions, we have to include them into the space consider- + * ations. This doesn't yield a very accurate number since + * parts of the old sessions might be inaccessible now, but we + * can't do much better. This is also important for the NFS + * filehandle validation. + */ + isomp->volume_space_size += ssector; + bcopy (rootp, isomp->root, sizeof isomp->root); + isomp->root_extent = isonum_733 (rootp->extent); + isomp->root_size = isonum_733 (rootp->size); + + isomp->im_bmask = logical_block_size - 1; + isomp->im_bshift = ffs(logical_block_size) - 1; + + pribp->b_flags |= B_AGE; + brelse(pribp); + pribp = NULL; + + mp->mnt_data = isomp; + mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); + mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; + mp->mnt_maxsymlinklen = 0; + MNT_ILOCK(mp); + mp->mnt_flag |= MNT_LOCAL; + mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_EXTENDED_SHARED; + MNT_IUNLOCK(mp); + isomp->im_mountp = mp; + isomp->im_dev = dev; + isomp->im_devvp = devvp; + + vfs_flagopt(mp->mnt_optnew, "norrip", &isomp->im_flags, ISOFSMNT_NORRIP); + vfs_flagopt(mp->mnt_optnew, "gens", &isomp->im_flags, ISOFSMNT_GENS); + vfs_flagopt(mp->mnt_optnew, "extatt", &isomp->im_flags, ISOFSMNT_EXTATT); + vfs_flagopt(mp->mnt_optnew, "nojoliet", &isomp->im_flags, ISOFSMNT_NOJOLIET); + vfs_flagopt(mp->mnt_optnew, "kiconv", &isomp->im_flags, ISOFSMNT_KICONV); + + /* Check the Rock Ridge Extension support */ + if (!(isomp->im_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, NOCRED, &bp)) != 0) + goto out; + + rootp = (struct iso_directory_record *)bp->b_data; + + if ((isomp->rr_skip = cd9660_rrip_offset(rootp,isomp)) < 0) { + isomp->im_flags |= ISOFSMNT_NORRIP; + } else { + isomp->im_flags &= ~ISOFSMNT_GENS; + } + + /* + * The contents are valid, + * but they will get reread as part of another vnode, so... + */ + bp->b_flags |= B_AGE; + brelse(bp); + bp = NULL; + } + + if (isomp->im_flags & ISOFSMNT_KICONV && cd9660_iconv) { + cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error); + if (error) + goto out; + cs_disk = vfs_getopts(mp->mnt_optnew, "cs_disk", &error); + if (error) + goto out; + cd9660_iconv->open(cs_local, cs_disk, &isomp->im_d2l); + cd9660_iconv->open(cs_disk, cs_local, &isomp->im_l2d); + } else { + isomp->im_d2l = NULL; + isomp->im_l2d = NULL; + } + + if (high_sierra) { + /* this effectively ignores all the mount flags */ + if (bootverbose) + log(LOG_INFO, "cd9660: High Sierra Format\n"); + isomp->iso_ftype = ISO_FTYPE_HIGH_SIERRA; + } else + 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: + if (bootverbose) + log(LOG_INFO, "cd9660: RockRidge Extension\n"); + isomp->iso_ftype = ISO_FTYPE_RRIP; + break; + } + + /* Decide whether to use the Joliet descriptor */ + + if (isomp->iso_ftype != ISO_FTYPE_RRIP && joliet_level) { + if (bootverbose) + log(LOG_INFO, "cd9660: Joliet Extension (Level %d)\n", + 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; + supbp->b_flags |= B_AGE; + } + + if (supbp) { + brelse(supbp); + supbp = NULL; + } + + return 0; +out: + if (bp) + brelse(bp); + if (pribp) + brelse(pribp); + if (supbp) + brelse(supbp); + if (cp != NULL) { + DROP_GIANT(); + g_topology_lock(); + g_vfs_close(cp); + g_topology_unlock(); + PICKUP_GIANT(); + } + if (isomp) { + free(isomp, M_ISOFSMNT); + mp->mnt_data = NULL; + } + dev_rel(dev); + return error; +} + +/* + * unmount system call + */ +static int +cd9660_unmount(mp, mntflags) + struct mount *mp; + int mntflags; +{ + struct iso_mnt *isomp; + int error, flags = 0; + + if (mntflags & MNT_FORCE) + flags |= FORCECLOSE; + if ((error = vflush(mp, 0, flags, curthread))) + return (error); + + isomp = VFSTOISOFS(mp); + + if (isomp->im_flags & ISOFSMNT_KICONV && cd9660_iconv) { + if (isomp->im_d2l) + cd9660_iconv->close(isomp->im_d2l); + if (isomp->im_l2d) + cd9660_iconv->close(isomp->im_l2d); + } + DROP_GIANT(); + g_topology_lock(); + g_vfs_close(isomp->im_cp); + g_topology_unlock(); + PICKUP_GIANT(); + vrele(isomp->im_devvp); + dev_rel(isomp->im_dev); + free(isomp, M_ISOFSMNT); + mp->mnt_data = NULL; + MNT_ILOCK(mp); + mp->mnt_flag &= ~MNT_LOCAL; + MNT_IUNLOCK(mp); + return (error); +} + +/* + * Return root of a filesystem + */ +static int +cd9660_root(mp, flags, vpp) + struct mount *mp; + int flags; + struct vnode **vpp; +{ + struct iso_mnt *imp = VFSTOISOFS(mp); + struct iso_directory_record *dp = + (struct iso_directory_record *)imp->root; + ino_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, flags, vpp, + imp->iso_ftype == ISO_FTYPE_RRIP, dp)); +} + +/* + * Get filesystem statistics. + */ +static int +cd9660_statfs(mp, sbp) + struct mount *mp; + struct statfs *sbp; +{ + 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 */ + 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 + */ + +/* ARGSUSED */ +static int +cd9660_fhtovp(mp, fhp, flags, vpp) + struct mount *mp; + struct fid *fhp; + int flags; + struct vnode **vpp; +{ + struct ifid ifh; + struct iso_node *ip; + struct vnode *nvp; + int error; + + memcpy(&ifh, fhp, sizeof(ifh)); + +#ifdef ISOFS_DBG + printf("fhtovp: ino %d, start %ld\n", + ifh.ifid_ino, ifh.ifid_start); +#endif + + if ((error = VFS_VGET(mp, ifh.ifid_ino, LK_EXCLUSIVE, &nvp)) != 0) { + *vpp = NULLVP; + return (error); + } + ip = VTOI(nvp); + if (ip->inode.iso_mode == 0) { + vput(nvp); + *vpp = NULLVP; + return (ESTALE); + } + *vpp = nvp; + vnode_create_vobject(*vpp, ip->i_size, curthread); + return (0); +} + +static int +cd9660_vget(mp, ino, flags, vpp) + struct mount *mp; + ino_t ino; + int flags; + struct vnode **vpp; +{ + + /* + * 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, flags, vpp, +#if 0 + VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP, +#else + 0, +#endif + (struct iso_directory_record *)0)); +} + +int +cd9660_vget_internal(mp, ino, flags, vpp, relocated, isodir) + struct mount *mp; + ino_t ino; + int flags; + struct vnode **vpp; + int relocated; + struct iso_directory_record *isodir; +{ + struct iso_mnt *imp; + struct iso_node *ip; + struct buf *bp; + struct vnode *vp; + struct cdev *dev; + int error; + struct thread *td; + + td = curthread; + error = vfs_hash_get(mp, ino, flags, td, vpp, NULL, NULL); + if (error || *vpp != NULL) + return (error); + + /* + * We must promote to an exclusive lock for vnode creation. This + * can happen if lookup is passed LOCKSHARED. + */ + if ((flags & LK_TYPE_MASK) == LK_SHARED) { + flags &= ~LK_TYPE_MASK; + flags |= LK_EXCLUSIVE; + } + + /* + * We do not lock vnode creation as it is believed to be too + * expensive for such rare case as simultaneous creation of vnode + * for same ino by different processes. We just allow them to race + * and check later to decide who wins. Let the race begin! + */ + + imp = VFSTOISOFS(mp); + dev = imp->im_dev; + + /* Allocate a new vnode/iso_node. */ + if ((error = getnewvnode("isofs", mp, &cd9660_vnodeops, &vp)) != 0) { + *vpp = NULLVP; + return (error); + } + ip = malloc(sizeof(struct iso_node), M_ISOFSNODE, + M_WAITOK | M_ZERO); + vp->v_data = ip; + ip->i_vnode = vp; + ip->i_number = ino; + + lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL); + error = insmntque(vp, mp); + if (error != 0) { + free(ip, M_ISOFSNODE); + *vpp = NULLVP; + return (error); + } + error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL); + if (error || *vpp != NULL) + 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, NOCRED, &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; + + 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_blkatoff(vp, (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 = 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_blkatoff(vp, (off_t)-(off << imp->im_bshift), NULL, + &bp2); + else + bp2 = NULL; + cd9660_defattr(isodir, ip, bp2, ISO_FTYPE_9660); + cd9660_deftstamp(isodir, ip, bp2, ISO_FTYPE_9660); + 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: + vp->v_op = &cd9660_fifoops; + break; + default: + VN_LOCK_ASHARE(vp); + break; + } + + if (ip->iso_extent == imp->root_extent) + vp->v_vflag |= VV_ROOT; + + /* + * XXX need generation number? + */ + + *vpp = vp; + return (0); +} |
