diff options
Diffstat (limited to 'sys/fs/cd9660/cd9660_vfsops.c')
| -rw-r--r-- | sys/fs/cd9660/cd9660_vfsops.c | 898 |
1 files changed, 898 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..01690a4 --- /dev/null +++ b/sys/fs/cd9660/cd9660_vfsops.c @@ -0,0 +1,898 @@ +/*- + * 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. 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. + * + * @(#)cd9660_vfsops.c 8.18 (Berkeley) 5/22/95 + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/namei.h> +#include <sys/proc.h> +#include <sys/kernel.h> +#include <sys/vnode.h> +#include <sys/mount.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 <vm/vm_zone.h> + +#include <isofs/cd9660/iso.h> +#include <isofs/cd9660/iso_rrip.h> +#include <isofs/cd9660/cd9660_node.h> +#include <isofs/cd9660/cd9660_mount.h> + +MALLOC_DEFINE(M_ISOFSMNT, "ISOFS mount", "ISOFS mount structure"); +MALLOC_DEFINE(M_ISOFSNODE, "ISOFS node", "ISOFS vnode private part"); + +static int cd9660_mount __P((struct mount *, + char *, caddr_t, struct nameidata *, struct proc *)); +static int cd9660_unmount __P((struct mount *, int, struct proc *)); +static int cd9660_root __P((struct mount *, struct vnode **)); +static int cd9660_statfs __P((struct mount *, struct statfs *, struct proc *)); +static int cd9660_vget __P((struct mount *, ino_t, struct vnode **)); +static int cd9660_fhtovp __P((struct mount *, struct fid *, struct vnode **)); +static int cd9660_checkexp __P((struct mount *, struct sockaddr *, + int *, struct ucred **)); +static int cd9660_vptofh __P((struct vnode *, struct fid *)); + +static struct vfsops cd9660_vfsops = { + cd9660_mount, + vfs_stdstart, + cd9660_unmount, + cd9660_root, + vfs_stdquotactl, + cd9660_statfs, + vfs_stdsync, + cd9660_vget, + cd9660_fhtovp, + cd9660_checkexp, + cd9660_vptofh, + cd9660_init, + vfs_stduninit, + vfs_stdextattrctl, +}; +VFS_SET(cd9660_vfsops, cd9660, VFCF_READONLY); + + +/* + * Called by vfs_mountroot when iso is going to be mounted as root. + */ + +static int iso_get_ssector __P((dev_t dev, struct proc *p)); +static int iso_mountfs __P((struct vnode *devvp, struct mount *mp, + struct proc *p, struct iso_args *argp)); + +/* + * Try to find the start of the last data track on this CD-ROM. This + * is used to mount the last session of a multi-session CD. Bail out + * and return 0 if we fail, this is always a safe bet. + */ +static int +iso_get_ssector(dev, p) + dev_t dev; + struct proc *p; +{ + struct ioc_toc_header h; + struct ioc_read_toc_single_entry t; + int i; + struct cdevsw *bd; + d_ioctl_t *ioctlp; + + bd = devsw(dev); + ioctlp = bd->d_ioctl; + if (ioctlp == NULL) + return 0; + + if (ioctlp(dev, CDIOREADTOCHEADER, (caddr_t)&h, FREAD, p) != 0) + return 0; + + for (i = h.ending_track; i >= 0; i--) { + t.address_format = CD_LBA_FORMAT; + t.track = i; + if (ioctlp(dev, CDIOREADTOCENTRY, (caddr_t)&t, FREAD, p) != 0) + return 0; + if ((t.entry.control & 4) != 0) + /* found a data track */ + break; + } + + if (i < 0) + return 0; + + return ntohl(t.entry.addr.lba); +} + +static int iso_mountroot __P((struct mount *mp, struct proc *p)); + +static int +iso_mountroot(mp, p) + struct mount *mp; + struct proc *p; +{ + struct iso_args args; + int error; + + if ((error = bdevvp(rootdev, &rootvp))) { + printf("iso_mountroot: can't find rootvp\n"); + return (error); + } + args.flags = ISOFSMNT_ROOT; + args.ssector = iso_get_ssector(rootdev, p); + if (bootverbose) + printf("iso_mountroot(): using session at block %d\n", + args.ssector); + if ((error = iso_mountfs(rootvp, mp, p, &args)) != 0) + return (error); + + (void)cd9660_statfs(mp, &mp->mnt_stat, p); + return (0); +} + +/* + * VFS Operations. + * + * mount system call + */ +static int +cd9660_mount(mp, path, data, ndp, p) + register struct mount *mp; + char *path; + caddr_t data; + struct nameidata *ndp; + struct proc *p; +{ + struct vnode *devvp; + struct iso_args args; + size_t size; + int error; + mode_t accessmode; + struct iso_mnt *imp = 0; + + if ((mp->mnt_flag & MNT_ROOTFS) != 0) { + return (iso_mountroot(mp, p)); + } + if ((error = copyin(data, (caddr_t)&args, sizeof (struct iso_args)))) + return (error); + + if ((mp->mnt_flag & MNT_RDONLY) == 0) + return (EROFS); + + /* + * 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 == 0) + return (vfs_export(mp, &imp->im_export, &args.export)); + } + /* + * 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, p); + if ((error = namei(ndp))) + return (error); + NDFREE(ndp, NDF_ONLY_PNBUF); + devvp = ndp->ni_vp; + + if (!vn_isdisk(devvp)) { + vrele(devvp); + return ENOTBLK; + } + + /* + * Verify that user has necessary permissions on the device, + * or has superuser abilities + */ + accessmode = VREAD; + vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p); + error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p); + if (error) + error = suser(p); + if (error) { + vput(devvp); + return (error); + } + VOP_UNLOCK(devvp, 0, p); + + 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; + } + imp = VFSTOISOFS(mp); + (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); + bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); + (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, + &size); + bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); + (void) 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 = (struct iso_mnt *)0; + struct buf *bp = NULL; + struct buf *pribp = NULL, *supbp = NULL; + dev_t dev = devvp->v_rdev; + int error = EINVAL; + int needclose = 0; + int high_sierra = 0; + int iso_bsize; + int iso_blknum; + int joliet_level; + struct iso_volume_descriptor *vdp = 0; + 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; + + if (!(mp->mnt_flag & MNT_RDONLY)) + 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))) + return error; + if (vcount(devvp) > 1 && devvp != rootvp) + return EBUSY; + if ((error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0))) + return (error); + + vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p); + error = VOP_OPEN(devvp, FREAD, FSCRED, p); + VOP_UNLOCK(devvp, 0, p); + if (error) + return error; + + needclose = 1; + + /* 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; + + joliet_level = 0; + for (iso_blknum = 16 + argp->ssector; + iso_blknum < 100 + argp->ssector; + iso_blknum++) { + if ((error = bread(devvp, iso_blknum * btodb(iso_bsize), + 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) != 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 (!(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 (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); + bzero((caddr_t)isomp, sizeof *isomp); + 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 += argp->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 = (qaddr_t)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; + mp->mnt_flag |= MNT_LOCAL; + isomp->im_mountp = mp; + isomp->im_dev = dev; + isomp->im_devvp = devvp; + + devvp->v_specmountpoint = mp; + + /* Check the Rock Ridge Extention 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, NOCRED, &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... + */ + bp->b_flags |= B_AGE; + brelse(bp); + bp = NULL; + } + isomp->im_flags = argp->flags & (ISOFSMNT_NORRIP | ISOFSMNT_GENS | + ISOFSMNT_EXTATT | ISOFSMNT_NOJOLIET); + + if (high_sierra) { + /* this effectively ignores all the mount flags */ + 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: + 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) { + log(LOG_INFO, "cd9660: Joliet Extension\n"); + 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: + devvp->v_specmountpoint = NULL; + if (bp) + brelse(bp); + if (pribp) + brelse(pribp); + if (supbp) + brelse(supbp); + if (needclose) + (void)VOP_CLOSE(devvp, FREAD, NOCRED, p); + if (isomp) { + free((caddr_t)isomp, M_ISOFSMNT); + mp->mnt_data = (qaddr_t)0; + } + return error; +} + +/* + * unmount system call + */ +static 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))) + return (error); + + isomp = VFSTOISOFS(mp); + + isomp->im_devvp->v_specmountpoint = NULL; + error = VOP_CLOSE(isomp->im_devvp, FREAD, NOCRED, p); + vrele(isomp->im_devvp); + free((caddr_t)isomp, M_ISOFSMNT); + mp->mnt_data = (qaddr_t)0; + mp->mnt_flag &= ~MNT_LOCAL; + return (error); +} + +/* + * Return root of a filesystem + */ +static 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; + 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, vpp, + imp->iso_ftype == ISO_FTYPE_RRIP, dp)); +} + +/* + * 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 */ + if (sbp != &mp->mnt_stat) { + sbp->f_type = mp->mnt_vfc->vfc_typenum; + bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); + bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); + } + 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_checkexp(mp, nam, exflagsp, credanonp) + struct mount *mp; + struct sockaddr *nam; + int *exflagsp; + struct ucred **credanonp; +{ + register struct netcred *np; + register struct iso_mnt *imp; + + imp = VFSTOISOFS(mp); + + /* + * Get the export permission structure for this <mp, client> 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); +} + +int +cd9660_vget(mp, ino, vpp) + struct mount *mp; + ino_t ino; + 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, vpp, +#if 0 + VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP, +#else + 0, +#endif + (struct iso_directory_record *)0)); +} + +int +cd9660_vget_internal(mp, ino, vpp, relocated, isodir) + struct mount *mp; + ino_t ino; + struct vnode **vpp; + int relocated; + struct iso_directory_record *isodir; +{ + struct iso_mnt *imp; + struct iso_node *ip; + struct buf *bp; + struct vnode *vp; + dev_t dev; + int error; + + 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_vnodeop_p, &vp)) != 0) { + *vpp = NULLVP; + return (error); + } + MALLOC(ip, struct iso_node *, sizeof(struct iso_node), M_ISOFSNODE, + M_WAITOK); + bzero((caddr_t)ip, sizeof(struct iso_node)); + lockinit(&ip->i_lock, PINOD, "isonode", 0, 0); + 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. + */ + cd9660_ihashins(ip); + + 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; + 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_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_fifoop_p; + break; + case VCHR: + case VBLK: + vp->v_op = cd9660_specop_p; + addaliasu(vp, ip->inode.iso_rdev); + break; + default: + 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; +} |
