/* * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* $NetBSD: cd9660_vnops.c,v 1.22 1994/12/27 19:05:12 mycroft 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. 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_vnops.c 8.15 (Berkeley) 12/5/94 * * HISTORY * 02-Feb-00 chw Add cd9660_copyfile to return error * 29-Sep-98 djb Add cd9660_getattrlist VOP for VDI support. * 15-sep-98 added cd9660_rmdir to do proper unlocking - chw * 12-aug-98 added cd9660_remove which will do proper unlocking - chw * 17-Feb-98 radar 1669467 - changed lock protocols to use the lock manager - chw * 22-Jan-98 radar 1669467 - ISO 9660 CD support - jwc */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* kmem_alloc, kmem_free */ #include #include #include /* * Open called. * * Nothing to do. */ int cd9660_open(__unused struct vnop_open_args *ap) { return (0); } /* * Close called * * Update the times on the inode on writeable file systems. */ int cd9660_close(__unused struct vnop_close_args *ap) { return (0); } int cd9660_getattr(struct vnop_getattr_args *ap) { struct vnode *vp = ap->a_vp; register struct vnode_attr *vap = ap->a_vap; register struct iso_node *ip = VTOI(vp); VATTR_RETURN(vap, va_fsid, ip->i_dev); VATTR_RETURN(vap, va_fileid, ip->i_number); VATTR_RETURN(vap, va_mode, ip->inode.iso_mode); VATTR_RETURN(vap, va_nlink, ip->inode.iso_links); VATTR_RETURN(vap, va_uid, ip->inode.iso_uid); VATTR_RETURN(vap, va_gid, ip->inode.iso_gid); VATTR_RETURN(vap, va_access_time, ip->inode.iso_atime); VATTR_RETURN(vap, va_modify_time, ip->inode.iso_mtime); VATTR_RETURN(vap, va_change_time, ip->inode.iso_ctime); VATTR_RETURN(vap, va_rdev, ip->inode.iso_rdev); VATTR_RETURN(vap, va_data_size, (off_t)ip->i_size); if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) { struct vnop_readlink_args rdlnk; uio_t auio; char uio_buf[ UIO_SIZEOF(1) ]; char *cp; MALLOC(cp, char *, MAXPATHLEN, M_TEMP, M_WAITOK); auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_READ, &uio_buf[0], sizeof(uio_buf)); uio_addiov(auio, CAST_USER_ADDR_T(cp), MAXPATHLEN); rdlnk.a_uio = auio; rdlnk.a_vp = ap->a_vp; rdlnk.a_context = ap->a_context; if (cd9660_readlink(&rdlnk) == 0) // LP64todo - fix this! VATTR_RETURN(vap, va_data_size, MAXPATHLEN - uio_resid(auio)); FREE(cp, M_TEMP); } VATTR_RETURN(vap, va_flags, 0); VATTR_RETURN(vap, va_gen, 1); VATTR_RETURN(vap, va_iosize, ip->i_mnt->logical_block_size); VATTR_RETURN(vap, va_total_size, ip->i_size + ip->i_rsrcsize); return (0); } /* * Vnode op for reading. */ int cd9660_read(struct vnop_read_args *ap) { struct vnode *vp = ap->a_vp; register struct uio *uio = ap->a_uio; register struct iso_node *ip = VTOI(vp); register struct iso_mnt *imp; struct buf *bp; daddr_t lbn; daddr64_t rablock; off_t diff; int rasize, error = 0; int32_t size, n, on; if (uio_resid(uio) == 0) return (0); if (uio->uio_offset < 0) return (EINVAL); imp = ip->i_mnt; if (UBCINFOEXISTS(vp)) { /* * Copy any part of the Apple Double header. */ if ((ip->i_flag & ISO_ASSOCIATED) && (uio->uio_offset < ADH_SIZE)) { apple_double_header_t header; int bytes; if (uio->uio_offset < sizeof(apple_double_header_t)) { header.magic = APPLEDOUBLE_MAGIC; header.version = APPLEDOUBLE_VERSION; header.count = 2; header.entries[0].entryID = APPLEDOUBLE_FINDERINFO; header.entries[0].offset = offsetof(apple_double_header_t, finfo); header.entries[0].length = 32; header.entries[1].entryID = APPLEDOUBLE_RESFORK; header.entries[1].offset = ADH_SIZE; header.entries[1].length = ip->i_size - ADH_SIZE; header.finfo.fdType = ip->i_FileType; header.finfo.fdCreator = ip->i_Creator; header.finfo.fdFlags = ip->i_FinderFlags; header.finfo.fdLocation.v = -1; header.finfo.fdLocation.h = -1; header.finfo.fdReserved = 0; bytes = min(uio_resid(uio), sizeof(apple_double_header_t) - uio->uio_offset); error = uiomove(((char *) &header) + uio->uio_offset, bytes, uio); if (error) return error; } if (uio_resid(uio) && uio->uio_offset < ADH_SIZE) { caddr_t buffer; if (kmem_alloc(kernel_map, (vm_offset_t *)&buffer, ADH_SIZE)) { return (ENOMEM); } bytes = min(uio_resid(uio), ADH_SIZE - uio->uio_offset); error = uiomove(((char *) buffer) + uio->uio_offset, bytes, uio); kmem_free(kernel_map, (vm_offset_t)buffer, ADH_SIZE); if (error) return error; } } if (uio_resid(uio) > 0) error = cluster_read(vp, uio, (off_t)ip->i_size, ap->a_ioflag); } else { do { lbn = lblkno(imp, uio->uio_offset); on = blkoff(imp, uio->uio_offset); n = min((u_int)(imp->logical_block_size - on), uio_resid(uio)); diff = (off_t)ip->i_size - uio->uio_offset; if (diff <= 0) return (0); if (diff < n) n = diff; size = blksize(imp, ip, lbn); rablock = (daddr64_t)lbn + 1; if (ip->i_lastr + 1 == lbn && lblktosize(imp, rablock) < ip->i_size) { rasize = blksize(imp, ip, (daddr_t)rablock); error = (int)buf_breadn(vp, (daddr64_t)((unsigned)lbn), size, &rablock, &rasize, 1, NOCRED, &bp); } else error = (int)buf_bread(vp, (daddr64_t)((unsigned)lbn), size, NOCRED, &bp); ip->i_lastr = lbn; n = min(n, size - buf_resid(bp)); if (error) { buf_brelse(bp); return (error); } error = uiomove((caddr_t)(buf_dataptr(bp) + on), (int)n, uio); if (n + on == imp->logical_block_size || uio->uio_offset == (off_t)ip->i_size) buf_markaged(bp); buf_brelse(bp); } while (error == 0 && uio_resid(uio) > 0 && n != 0); } return (error); } int cd9660_ioctl(__unused struct vnop_ioctl_args *ap) { return (ENOTTY); } int cd9660_select(__unused struct vnop_select_args *ap) { /* * We should really check to see if I/O is possible. */ return (1); } /* * Mmap a file * * NB Currently unsupported. */ int cd9660_mmap(__unused struct vnop_mmap_args *ap) { return (EINVAL); } /* * Structure for reading directories */ struct isoreaddir { struct dirent saveent; struct dirent current; off_t saveoff; off_t curroff; struct uio *uio; off_t uio_off; int eofflag; // u_long **cookies; // int *ncookies; }; static int iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off) { int error; dp->d_name[dp->d_namlen] = 0; dp->d_reclen = DIRSIZ(dp); if (uio_resid(idp->uio) < dp->d_reclen) { idp->eofflag = 0; return (-1); } #if 0 if (idp->cookies) { if (*idp->ncookies <= 0) { idp->eofflag = 0; return (-1); } **idp->cookies++ = off; --*idp->ncookies; } #endif if ( (error = uiomove( (caddr_t)dp, dp->d_reclen, idp->uio )) ) return (error); idp->uio_off = off; return (0); } static int iso_shipdir(struct isoreaddir *idp) { struct dirent *dp; int cl, sl; int error; char *cname, *sname; cl = idp->current.d_namlen; cname = idp->current.d_name; dp = &idp->saveent; sname = dp->d_name; sl = dp->d_namlen; if (sl > 0) { if (sl != cl || bcmp(sname,cname,sl)) { if (idp->saveent.d_namlen) { if ( (error = iso_uiodir(idp,&idp->saveent,idp->saveoff)) ) return (error); idp->saveent.d_namlen = 0; } } } idp->current.d_reclen = DIRSIZ(&idp->current); idp->saveoff = idp->curroff; bcopy(&idp->current,&idp->saveent,idp->current.d_reclen); return (0); } /* * Vnode op for readdir * * Note that directories are sector aligned (2K) and * that an entry can cross a logical block but not * a sector. */ int cd9660_readdir(struct vnop_readdir_args *ap) { register struct uio *uio = ap->a_uio; #if 0 off_t startingOffset = uio->uio_offset; size_t lost = 0; #endif /* 0 */ struct isoreaddir *idp; struct vnode *vdp = ap->a_vp; struct iso_node *dp; struct iso_mnt *imp; struct buf *bp = NULL; struct iso_directory_record *ep; int entryoffsetinblock; doff_t endsearch; uint32_t bmask; int error = 0; int reclen; u_short namelen; if (ap->a_flags & (VNODE_READDIR_EXTENDED | VNODE_READDIR_REQSEEKOFF)) return (EINVAL); dp = VTOI(vdp); imp = dp->i_mnt; bmask = imp->im_sector_size - 1; MALLOC(idp, struct isoreaddir *, sizeof(*idp), M_TEMP, M_WAITOK); idp->saveent.d_namlen = 0; /* * XXX * Is it worth trying to figure out the type? */ idp->saveent.d_type = idp->current.d_type = DT_UNKNOWN; idp->uio = uio; idp->eofflag = 1; idp->curroff = uio->uio_offset; if ((entryoffsetinblock = idp->curroff & bmask) && (error = cd9660_blkatoff(vdp, SECTOFF(imp, idp->curroff), NULL, &bp))) { FREE(idp, M_TEMP); return (error); } endsearch = dp->i_size; while (idp->curroff < endsearch) { /* * If offset is on a block boundary, * read the next directory block. * Release previous if it exists. */ if ((idp->curroff & bmask) == 0) { if (bp != NULL) buf_brelse(bp); if ((error = cd9660_blkatoff(vdp, SECTOFF(imp, idp->curroff), NULL, &bp))) break; entryoffsetinblock = 0; } /* * Get pointer to next entry. */ ep = (struct iso_directory_record *) (buf_dataptr(bp) + entryoffsetinblock); reclen = isonum_711(ep->length); if (reclen == 0) { /* skip to next block, if any */ idp->curroff = (idp->curroff & ~bmask) + imp->im_sector_size; continue; } if (reclen < ISO_DIRECTORY_RECORD_SIZE) { error = EINVAL; /* illegal entry, stop */ break; } if (entryoffsetinblock + reclen > imp->im_sector_size) { error = EINVAL; /* illegal directory, so stop looking */ break; } idp->current.d_namlen = isonum_711(ep->name_len); if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) { error = EINVAL; /* illegal entry, stop */ break; } /* * Some poorly mastered discs have an incorrect directory * file size. If the '.' entry has a better size (bigger) * then use that instead. */ if ((uio->uio_offset == 0) && (isonum_733(ep->size) > endsearch)) { dp->i_size = endsearch = isonum_733(ep->size); } if ( isonum_711(ep->flags) & directoryBit ) idp->current.d_fileno = isodirino(ep, imp); else { idp->current.d_fileno = ((daddr_t)buf_blkno(bp) << imp->im_bshift) + entryoffsetinblock; } idp->curroff += reclen; switch (imp->iso_ftype) { case ISO_FTYPE_RRIP: cd9660_rrip_getname(ep,idp->current.d_name, &namelen, &idp->current.d_fileno,imp); idp->current.d_namlen = (u_char)namelen; if (idp->current.d_namlen) error = iso_uiodir(idp,&idp->current,idp->curroff); break; case ISO_FTYPE_JOLIET: ucsfntrans((u_int16_t *)ep->name, idp->current.d_namlen, idp->current.d_name, &namelen, isonum_711(ep->flags) & directoryBit, isonum_711(ep->flags) & associatedBit); idp->current.d_namlen = (u_char)namelen; if (idp->current.d_namlen) error = iso_uiodir(idp,&idp->current,idp->curroff); break; default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 */ strlcpy(idp->current.d_name, "..", __DARWIN_MAXNAMLEN + 1); switch (ep->name[0]) { case 0: idp->current.d_namlen = 1; error = iso_uiodir(idp,&idp->current,idp->curroff); break; case 1: idp->current.d_namlen = 2; error = iso_uiodir(idp,&idp->current,idp->curroff); break; default: isofntrans(ep->name,idp->current.d_namlen, idp->current.d_name, &namelen, imp->iso_ftype == ISO_FTYPE_9660, isonum_711(ep->flags) & associatedBit); idp->current.d_namlen = (u_char)namelen; if (imp->iso_ftype == ISO_FTYPE_DEFAULT) error = iso_shipdir(idp); else error = iso_uiodir(idp,&idp->current,idp->curroff); break; } } if (error) break; entryoffsetinblock += reclen; } if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) { idp->current.d_namlen = 0; error = iso_shipdir(idp); } #if 0 if (!error && ap->a_ncookies) { struct dirent *dirp, *dpstart; off_t bufferOffset; u_long *cookies; int ncookies; /* * Only the NFS server uses cookies, and it loads the * directory block into system space, so we can just look at * it directly. * * We assume the entire transfer is done to a single contiguous buffer. */ if (UIO_SEG_IS_USER_SPACE(uio->uio_segflg) || uio->uio_iovcnt != 1) panic("ufs_readdir: lost in space"); /* * Make a first pass over the buffer just generated, * counting the number of entries: */ // LP64todo - fix this! dpstart = (struct dirent *) CAST_DOWN(caddr_t, (uio_iov_base(uio) - (uio->uio_offset - startingOffset))); for (dirp = dpstart, bufferOffset = startingOffset, ncookies = 0; bufferOffset < uio->uio_offset; ) { if (dirp->d_reclen == 0) break; bufferOffset += dirp->d_reclen; ncookies++; dirp = (struct dirent *)((caddr_t)dirp + dirp->d_reclen); } lost += uio->uio_offset - bufferOffset; uio->uio_offset = bufferOffset; /* * Allocate a buffer to hold the cookies requested: */ MALLOC(cookies, u_long *, ncookies * sizeof(u_long), M_TEMP, M_WAITOK); *ap->a_ncookies = ncookies; *ap->a_cookies = cookies; /* * Fill in the offsets for each entry in the buffer just allocated: */ for (bufferOffset = startingOffset, dirp = dpstart; bufferOffset < uio->uio_offset; ) { *(cookies++) = bufferOffset; bufferOffset += dirp->d_reclen; dirp = (struct dirent *)((caddr_t)dirp + dirp->d_reclen); } } #endif if (error < 0) error = 0; if (bp) buf_brelse (bp); uio->uio_offset = idp->uio_off; *ap->a_eofflag = idp->eofflag; FREE(idp, M_TEMP); return (error); } /* * Return target name of a symbolic link * Shouldn't we get the parent vnode and read the data from there? * This could eventually result in deadlocks in cd9660_lookup. * But otherwise the block read here is in the block buffer two times. */ typedef struct iso_directory_record ISODIR; typedef struct iso_node ISONODE; typedef struct iso_mnt ISOMNT; int cd9660_readlink(struct vnop_readlink_args *ap) { ISONODE *ip; ISODIR *dirp; ISOMNT *imp; struct buf *bp; struct uio *uio; u_short symlen; int error; char *symname; ip = VTOI(ap->a_vp); imp = ip->i_mnt; uio = ap->a_uio; if (imp->iso_ftype != ISO_FTYPE_RRIP) return (EINVAL); /* * Get parents directory record block that this inode included. */ error = (int)buf_bread(imp->im_devvp, (daddr64_t)((unsigned)(ip->i_number >> imp->im_bshift)), imp->logical_block_size, NOCRED, &bp); if (error) { buf_brelse(bp); return (EINVAL); } /* * Setup the directory pointer for this inode */ dirp = (ISODIR *)(buf_dataptr(bp) + (ip->i_number & imp->im_bmask)); /* * Just make sure, we have a right one.... * 1: Check not cross boundary on block */ if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length) > imp->logical_block_size) { buf_brelse(bp); return (EINVAL); } /* * Now get a buffer * Abuse a namei buffer for now. */ if (UIO_SEG_IS_USER_SPACE(uio->uio_segflg)) MALLOC_ZONE(symname, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); else // LP64todo - fix this! symname = CAST_DOWN(caddr_t, uio_iov_base(uio)); /* * Ok, we just gathering a symbolic name in SL record. */ if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) { if (UIO_SEG_IS_USER_SPACE(uio->uio_segflg)) FREE_ZONE(symname, MAXPATHLEN, M_NAMEI); buf_brelse(bp); return (EINVAL); } /* * Don't forget before you leave from home ;-) */ buf_brelse(bp); /* * return with the symbolic name to caller's. */ if (UIO_SEG_IS_USER_SPACE(uio->uio_segflg)) { error = uiomove(symname, symlen, uio); FREE_ZONE(symname, MAXPATHLEN, M_NAMEI); return (error); } #if LP64KERN uio_setresid(uio, (uio_resid(uio) - symlen)); uio_iov_len_add(uio, -((int64_t)symlen)); #else uio_setresid(uio, (uio_resid(uio) - symlen)); uio_iov_len_add(uio, -((int)symlen)); #endif uio_iov_base_add(uio, symlen); return (0); } /* * prepare and issue the I/O */ int cd9660_strategy(struct vnop_strategy_args *ap) { buf_t bp = ap->a_bp; vnode_t vp = buf_vnode(bp); struct iso_node *ip = VTOI(vp); return (buf_strategy(ip->i_devvp, ap)); } /* * Return POSIX pathconf information applicable to cd9660 filesystems. */ int cd9660_pathconf(struct vnop_pathconf_args *ap) { switch (ap->a_name) { case _PC_LINK_MAX: *ap->a_retval = 1; return (0); case _PC_NAME_MAX: switch (VTOI(ap->a_vp)->i_mnt->iso_ftype) { case ISO_FTYPE_RRIP: *ap->a_retval = ISO_RRIP_NAMEMAX; break; case ISO_FTYPE_JOLIET: *ap->a_retval = ISO_JOLIET_NAMEMAX; break; default: *ap->a_retval = ISO_NAMEMAX; } return (0); case _PC_PATH_MAX: *ap->a_retval = PATH_MAX; return (0); case _PC_PIPE_BUF: *ap->a_retval = PIPE_BUF; return (0); case _PC_CHOWN_RESTRICTED: *ap->a_retval = 200112; /* _POSIX_CHOWN_RESTRICTED */ return (0); case _PC_NO_TRUNC: *ap->a_retval = 200112; /* _POSIX_NO_TRUNC */ return (0); default: return (EINVAL); } /* NOTREACHED */ } /* * Unsupported operation */ int cd9660_enotsupp(void) { return (ENOTSUP); } /* Pagein. similar to read */ int cd9660_pagein(struct vnop_pagein_args *ap) { struct vnode *vp = ap->a_vp; upl_t pl = ap->a_pl; size_t size = ap->a_size; off_t f_offset = ap->a_f_offset; vm_offset_t pl_offset = ap->a_pl_offset; int flags = ap->a_flags; register struct iso_node *ip = VTOI(vp); int error = 0; /* * Copy the Apple Double header. */ if ((ip->i_flag & ISO_ASSOCIATED) && (f_offset == 0) && (size == ADH_SIZE)) { apple_double_header_t header; kern_return_t kret; vm_offset_t ioaddr; kret = ubc_upl_map(pl, &ioaddr); if (kret != KERN_SUCCESS) panic("cd9660_xa_pagein: ubc_upl_map error = %d", kret); ioaddr += pl_offset; bzero((caddr_t)ioaddr, ADH_SIZE); header.magic = APPLEDOUBLE_MAGIC; header.version = APPLEDOUBLE_VERSION; header.count = 2; header.entries[0].entryID = APPLEDOUBLE_FINDERINFO; header.entries[0].offset = offsetof(apple_double_header_t, finfo); header.entries[0].length = 32; header.entries[1].entryID = APPLEDOUBLE_RESFORK; header.entries[1].offset = ADH_SIZE; header.entries[1].length = ip->i_size - ADH_SIZE; header.finfo.fdType = ip->i_FileType; header.finfo.fdCreator = ip->i_Creator; header.finfo.fdFlags = ip->i_FinderFlags; header.finfo.fdLocation.v = -1; header.finfo.fdLocation.h = -1; header.finfo.fdReserved = 0; bcopy((caddr_t)&header, (caddr_t)ioaddr, sizeof(apple_double_header_t)); kret = ubc_upl_unmap(pl); if (kret != KERN_SUCCESS) panic("cd9660_xa_pagein: ubc_upl_unmap error = %d", kret); if ((flags & UPL_NOCOMMIT) == 0) { ubc_upl_commit_range(pl, pl_offset, size, UPL_COMMIT_FREE_ON_EMPTY); } } else { /* check pageouts are for reg file only and ubc info is present*/ error = cluster_pagein(vp, pl, pl_offset, f_offset, size, (off_t)ip->i_size, flags); } return (error); } /* * cd9660_remove - not possible to remove a file from iso cds * * Locking policy: a_dvp and vp locked on entry, unlocked on exit */ int cd9660_remove(__unused struct vnop_remove_args *ap) { return (EROFS); } /* * cd9660_rmdir - not possible to remove a directory from iso cds * * Locking policy: a_dvp and vp locked on entry, unlocked on exit */ int cd9660_rmdir(struct vnop_rmdir_args *ap) { (void) nop_rmdir(ap); return (EROFS); } /* * Make a RIFF file header for a CD-ROM XA media file. */ __private_extern__ void cd9660_xa_init(struct iso_node *ip, struct iso_directory_record *isodir) { uint32_t sectors; struct riff_header *header; u_char name_len; char *cdxa; MALLOC(header, struct riff_header *, sizeof(struct riff_header), M_TEMP, M_WAITOK); sectors = ip->i_size / 2048; strncpy(header->riff, "RIFF", 4); header->fileSize = OSSwapHostToLittleInt32(sectors * CDXA_SECTOR_SIZE + sizeof(struct riff_header) - 8); strncpy(header->cdxa, "CDXA", 4); strncpy(header->fmt, "fmt ", 4); header->fmtSize = OSSwapHostToLittleConstInt32(16); strncpy(header->data, "data", 4); header->dataSize = OSSwapHostToLittleInt32(sectors * CDXA_SECTOR_SIZE); /* * Copy the CD-ROM XA extended directory information into the header. As far as * I can tell, it's always 14 bytes in the directory record, but allocated 16 bytes * in the header (the last two being zeroed pad bytes). */ name_len = isonum_711(isodir->name_len); cdxa = &isodir->name[name_len]; if ((name_len & 0x01) == 0) ++cdxa; /* Skip pad byte */ bcopy(cdxa, header->fmtData, 14); header->fmtData[14] = 0; header->fmtData[15] = 0; /* * Point this i-node to the "whole sector" device instead of the normal * device. This allows cd9660_strategy to be ignorant of the block * (sector) size. */ ip->i_devvp = ip->i_mnt->phys_devvp; ip->i_size = sectors * CDXA_SECTOR_SIZE + sizeof(struct riff_header); ip->i_riff = header; } /* * Helper routine for vnop_read and vnop_pagein of CD-ROM XA multimedia files. * This routine determines the physical location of the file, then reads * sectors directly from the device into a buffer. It also handles inserting * the RIFF header at the beginning of the file. * * Exactly one of buffer or uio must be non-zero. It will either bcopy to * buffer, or uiomove via uio. * * XXX Should this code be using buf_breadn and ip->i_lastr to support single-block * read-ahead? Should we try more aggressive read-ahead like cluster_io does? * * XXX This could be made to do larger I/O to the device (reading all the * whole sectors directly into the buffer). That would make the code more * complex, and the current code only adds 2.5% overhead compared to reading * from the device directly (at least on my test machine). */ static int cd9660_xa_read_common( struct vnode *vp, off_t offset, size_t amount, caddr_t buffer, struct uio *uio) { struct iso_node *ip = VTOI(vp); struct buf *bp; off_t diff; /* number of bytes from offset to file's EOF */ daddr_t block; /* physical disk block containing offset */ off_t sect_off; /* starting offset into current sector */ u_int count; /* number of bytes to transfer in current block */ int error=0; /* * Copy any part of the RIFF header. */ if (offset < sizeof(struct riff_header)) { char *p; p = ((char *) ip->i_riff) + offset; count = min(amount, sizeof(struct riff_header) - offset); if (buffer) { bcopy(p, buffer, count); buffer += count; } else { error = uiomove(p, count, uio); } amount -= count; offset += count; } if (error) return error; /* * Loop over (possibly partial) blocks to transfer. */ while (error == 0 && amount > 0) { /* * Determine number of bytes until EOF. If we've hit * EOF then return. */ diff = ip->i_size - offset; if (diff <= 0) return 0; /* Get a block from the underlying device */ block = ip->iso_start + (offset - sizeof(struct riff_header))/CDXA_SECTOR_SIZE; error = (int)buf_bread(ip->i_devvp, (daddr64_t)((unsigned)block), CDXA_SECTOR_SIZE, NOCRED, &bp); if (error) { buf_brelse(bp); return error; } if (buf_resid(bp)) { printf("isofs: cd9660_xa_read_common: buf_bread didn't read full sector\n"); return EIO; } /* Figure out which part of the block to copy, and copy it */ sect_off = (offset - sizeof(struct riff_header)) % CDXA_SECTOR_SIZE; count = min(CDXA_SECTOR_SIZE-sect_off, amount); if (diff < count) /* Pin transfer amount to EOF */ count = diff; if (buffer) { bcopy(CAST_DOWN(caddr_t, (buf_dataptr(bp)+sect_off)), buffer, count); buffer += count; } else { error = uiomove(CAST_DOWN(caddr_t, (buf_dataptr(bp)+sect_off)), count, uio); } amount -= count; offset += count; /* * If we copied through the end of the block, or the end of file, then * age the device block. This is optimized for sequential access. */ if (sect_off+count == CDXA_SECTOR_SIZE || offset == (off_t)ip->i_size) buf_markaged(bp); buf_brelse(bp); } return error; } /* * Read from a CD-ROM XA multimedia file. * * This uses the same common routine as pagein for doing the actual read * from the device. * * This routine doesn't do any caching beyond what the block device does. * Even then, cd9660_xa_read_common ages the blocks once we read up to * the end. * * We don't even take advantage if the file has been memory mapped and has * valid pages already (in which case we could just uiomove from the page * to the caller). Since we're a read-only filesystem, there can't be * any cache coherency problems. Multimedia files are expected to be * large and streamed anyway, so caching file contents probably isn't * important. */ int cd9660_xa_read(struct vnop_read_args *ap) { struct vnode *vp = ap->a_vp; register struct uio *uio = ap->a_uio; register struct iso_node *ip = VTOI(vp); off_t offset = uio->uio_offset; // LP64todo - fix this! size_t size = uio_resid(uio); /* Check for some obvious parameter problems */ if (offset < 0) return EINVAL; if (size == 0) return 0; if (offset >= ip->i_size) return 0; /* Pin the size of the read to the file's EOF */ if (offset + size > ip->i_size) size = ip->i_size - offset; return cd9660_xa_read_common(vp, offset, size, NULL, uio); } /* * Page in from a CD-ROM XA media file. * * Since our device block size isn't a power of two, we can't use * cluster_pagein. Instead, we have to map the page and read into it. */ static int cd9660_xa_pagein(struct vnop_pagein_args *ap) { struct vnode *vp = ap->a_vp; upl_t pl = ap->a_pl; size_t size= ap->a_size; off_t f_offset = ap->a_f_offset; vm_offset_t pl_offset = ap->a_pl_offset; int flags = ap->a_flags; register struct iso_node *ip = VTOI(vp); int error; kern_return_t kret; vm_offset_t ioaddr; if (size <= 0) panic("cd9660_xa_pagein: size = %d", size); kret = ubc_upl_map(pl, &ioaddr); if (kret != KERN_SUCCESS) panic("cd9660_xa_pagein: ubc_upl_map error = %d", kret); ioaddr += pl_offset; /* Make sure pagein doesn't extend past EOF */ if (f_offset + size > ip->i_size) size = ip->i_size - f_offset; /* pin size to EOF */ /* Read the data in using the underlying device */ error = cd9660_xa_read_common(vp, f_offset, size, (caddr_t)ioaddr, NULL); /* Zero fill part of page past EOF */ if (ap->a_size > size) bzero((caddr_t)ioaddr+size, ap->a_size-size); kret = ubc_upl_unmap(pl); if (kret != KERN_SUCCESS) panic("cd9660_xa_pagein: ubc_upl_unmap error = %d", kret); if ((flags & UPL_NOCOMMIT) == 0) { if (error) ubc_upl_abort_range(pl, pl_offset, ap->a_size, UPL_ABORT_FREE_ON_EMPTY); else ubc_upl_commit_range(pl, pl_offset, ap->a_size, UPL_COMMIT_FREE_ON_EMPTY); } return error; } /* * Global vfs data structures for isofs */ #define cd9660_create \ ((int (*)(struct vnop_create_args *))err_create) #define cd9660_mknod ((int (*)(struct vnop_mknod_args *))err_mknod) #define cd9660_write ((int (*)(struct vnop_write_args *))cd9660_enotsupp) #define cd9660_fsync ((int (*)(struct vnop_fsync_args *))nullop) #define cd9660_rename \ ((int (*)(struct vnop_rename_args *))err_rename) #define cd9660_copyfile \ ((int (*)(struct vnop_copyfile_args *))err_copyfile) #define cd9660_link ((int (*)(struct vnop_link_args *))err_link) #define cd9660_mkdir ((int (*)(struct vnop_mkdir_args *))err_mkdir) #define cd9660_symlink \ ((int (*)(struct vnop_symlink_args *))err_symlink) #define cd9660_advlock \ ((int (*)(struct vnop_advlock_args *))cd9660_enotsupp) #define cd9660_bwrite \ ((int (*)(struct vnop_bwrite_args *))cd9660_enotsupp) #define cd9660_pageout \ ((int (*)(struct vnop_pageout_args *))cd9660_enotsupp) int cd9660_blktooff(struct vnop_blktooff_args *ap); int cd9660_offtoblk(struct vnop_offtoblk_args *ap); int cd9660_blockmap(struct vnop_blockmap_args *ap); #define VOPFUNC int (*)(void *) /* * Global vfs data structures for cd9660 */ int (**cd9660_vnodeop_p)(void *); struct vnodeopv_entry_desc cd9660_vnodeop_entries[] = { { &vnop_default_desc, (VOPFUNC)vn_default_error }, { &vnop_lookup_desc, (VOPFUNC)cd9660_lookup }, /* lookup */ { &vnop_create_desc, (VOPFUNC)cd9660_create }, /* create */ { &vnop_mknod_desc, (VOPFUNC)cd9660_mknod }, /* mknod */ { &vnop_open_desc, (VOPFUNC)cd9660_open }, /* open */ { &vnop_close_desc, (VOPFUNC)cd9660_close }, /* close */ { &vnop_getattr_desc, (VOPFUNC)cd9660_getattr }, /* getattr */ { &vnop_read_desc, (VOPFUNC)cd9660_read }, /* read */ { &vnop_write_desc, (VOPFUNC)cd9660_write }, /* write */ { &vnop_ioctl_desc, (VOPFUNC)cd9660_ioctl }, /* ioctl */ { &vnop_select_desc, (VOPFUNC)cd9660_select }, /* select */ { &vnop_mmap_desc, (VOPFUNC)cd9660_mmap }, /* mmap */ { &vnop_fsync_desc, (VOPFUNC)cd9660_fsync }, /* fsync */ { &vnop_remove_desc, (VOPFUNC)cd9660_remove }, /* remove */ { &vnop_link_desc, (VOPFUNC)cd9660_link }, /* link */ { &vnop_rename_desc, (VOPFUNC)cd9660_rename }, /* rename */ { &vnop_copyfile_desc, (VOPFUNC)cd9660_copyfile },/* copyfile */ { &vnop_mkdir_desc, (VOPFUNC)cd9660_mkdir }, /* mkdir */ { &vnop_rmdir_desc, (VOPFUNC)cd9660_rmdir }, /* rmdir */ { &vnop_symlink_desc, (VOPFUNC)cd9660_symlink }, /* symlink */ { &vnop_readdir_desc, (VOPFUNC)cd9660_readdir }, /* readdir */ { &vnop_readlink_desc, (VOPFUNC)cd9660_readlink },/* readlink */ { &vnop_inactive_desc, (VOPFUNC)cd9660_inactive },/* inactive */ { &vnop_reclaim_desc, (VOPFUNC)cd9660_reclaim }, /* reclaim */ { &vnop_strategy_desc, (VOPFUNC)cd9660_strategy },/* strategy */ { &vnop_pathconf_desc, (VOPFUNC)cd9660_pathconf },/* pathconf */ { &vnop_advlock_desc, (VOPFUNC)cd9660_advlock }, /* advlock */ { &vnop_bwrite_desc, (VOPFUNC)vn_bwrite }, { &vnop_pagein_desc, (VOPFUNC)cd9660_pagein }, /* Pagein */ { &vnop_pageout_desc, (VOPFUNC)cd9660_pageout }, /* Pageout */ { &vnop_blktooff_desc, (VOPFUNC)cd9660_blktooff }, /* blktooff */ { &vnop_offtoblk_desc, (VOPFUNC)cd9660_offtoblk }, /* offtoblk */ { &vnop_blockmap_desc, (VOPFUNC)cd9660_blockmap }, /* blockmap */ { (struct vnodeop_desc*)NULL, (VOPFUNC)NULL } }; struct vnodeopv_desc cd9660_vnodeop_opv_desc = { &cd9660_vnodeop_p, cd9660_vnodeop_entries }; /* * The VOP table for CD-ROM XA (media) files is almost the same * as for ordinary files, except for read, and pagein. * Note that cd9660_xa_read doesn't use cluster I/O, so blockmap * isn't needed, and isn't implemented. Similarly, it doesn't * do buf_bread() on CD XA vnodes, so bmap, blktooff, offtoblk * aren't needed. */ int (**cd9660_cdxaop_p)(void *); struct vnodeopv_entry_desc cd9660_cdxaop_entries[] = { { &vnop_default_desc, (VOPFUNC)vn_default_error }, { &vnop_lookup_desc, (VOPFUNC)cd9660_lookup }, /* lookup */ { &vnop_create_desc, (VOPFUNC)cd9660_create }, /* create */ { &vnop_mknod_desc, (VOPFUNC)cd9660_mknod }, /* mknod */ { &vnop_open_desc, (VOPFUNC)cd9660_open }, /* open */ { &vnop_close_desc, (VOPFUNC)cd9660_close }, /* close */ { &vnop_getattr_desc, (VOPFUNC)cd9660_getattr }, /* getattr */ { &vnop_read_desc, (VOPFUNC)cd9660_xa_read }, /* read */ { &vnop_write_desc, (VOPFUNC)cd9660_write }, /* write */ { &vnop_ioctl_desc, (VOPFUNC)cd9660_ioctl }, /* ioctl */ { &vnop_select_desc, (VOPFUNC)cd9660_select }, /* select */ { &vnop_mmap_desc, (VOPFUNC)cd9660_mmap }, /* mmap */ { &vnop_fsync_desc, (VOPFUNC)cd9660_fsync }, /* fsync */ { &vnop_remove_desc, (VOPFUNC)cd9660_remove }, /* remove */ { &vnop_link_desc, (VOPFUNC)cd9660_link }, /* link */ { &vnop_rename_desc, (VOPFUNC)cd9660_rename }, /* rename */ { &vnop_copyfile_desc, (VOPFUNC)cd9660_copyfile },/* copyfile */ { &vnop_mkdir_desc, (VOPFUNC)cd9660_mkdir }, /* mkdir */ { &vnop_rmdir_desc, (VOPFUNC)cd9660_rmdir }, /* rmdir */ { &vnop_symlink_desc, (VOPFUNC)cd9660_symlink }, /* symlink */ { &vnop_readdir_desc, (VOPFUNC)cd9660_readdir }, /* readdir */ { &vnop_readlink_desc, (VOPFUNC)cd9660_readlink },/* readlink */ { &vnop_inactive_desc, (VOPFUNC)cd9660_inactive },/* inactive */ { &vnop_reclaim_desc, (VOPFUNC)cd9660_reclaim }, /* reclaim */ { &vnop_strategy_desc, (VOPFUNC)cd9660_strategy },/* strategy */ { &vnop_pathconf_desc, (VOPFUNC)cd9660_pathconf },/* pathconf */ { &vnop_advlock_desc, (VOPFUNC)cd9660_advlock }, /* advlock */ { &vnop_bwrite_desc, (VOPFUNC)vn_bwrite }, { &vnop_pagein_desc, (VOPFUNC)cd9660_xa_pagein }, /* Pagein */ { &vnop_pageout_desc, (VOPFUNC)cd9660_pageout }, /* Pageout */ { (struct vnodeop_desc*)NULL, (VOPFUNC)NULL } }; struct vnodeopv_desc cd9660_cdxaop_opv_desc = { &cd9660_cdxaop_p, cd9660_cdxaop_entries }; /* * Special device vnode ops */ int (**cd9660_specop_p)(void *); struct vnodeopv_entry_desc cd9660_specop_entries[] = { { &vnop_default_desc, (VOPFUNC)vn_default_error }, { &vnop_lookup_desc, (VOPFUNC)spec_lookup }, /* lookup */ { &vnop_create_desc, (VOPFUNC)spec_create }, /* create */ { &vnop_mknod_desc, (VOPFUNC)spec_mknod }, /* mknod */ { &vnop_open_desc, (VOPFUNC)spec_open }, /* open */ { &vnop_close_desc, (VOPFUNC)spec_close }, /* close */ { &vnop_getattr_desc, (VOPFUNC)cd9660_getattr }, /* getattr */ { &vnop_read_desc, (VOPFUNC)spec_read }, /* read */ { &vnop_write_desc, (VOPFUNC)spec_write }, /* write */ { &vnop_ioctl_desc, (VOPFUNC)spec_ioctl }, /* ioctl */ { &vnop_select_desc, (VOPFUNC)spec_select }, /* select */ { &vnop_mmap_desc, (VOPFUNC)spec_mmap }, /* mmap */ { &vnop_fsync_desc, (VOPFUNC)spec_fsync }, /* fsync */ { &vnop_remove_desc, (VOPFUNC)spec_remove }, /* remove */ { &vnop_link_desc, (VOPFUNC)spec_link }, /* link */ { &vnop_rename_desc, (VOPFUNC)spec_rename }, /* rename */ { &vnop_mkdir_desc, (VOPFUNC)spec_mkdir }, /* mkdir */ { &vnop_rmdir_desc, (VOPFUNC)spec_rmdir }, /* rmdir */ { &vnop_symlink_desc, (VOPFUNC)spec_symlink }, /* symlink */ { &vnop_readdir_desc, (VOPFUNC)spec_readdir }, /* readdir */ { &vnop_readlink_desc, (VOPFUNC)spec_readlink }, /* readlink */ { &vnop_inactive_desc, (VOPFUNC)cd9660_inactive },/* inactive */ { &vnop_reclaim_desc, (VOPFUNC)cd9660_reclaim }, /* reclaim */ { &vnop_strategy_desc, (VOPFUNC)spec_strategy }, /* strategy */ { &vnop_pathconf_desc, (VOPFUNC)spec_pathconf }, /* pathconf */ { &vnop_advlock_desc, (VOPFUNC)spec_advlock }, /* advlock */ { &vnop_bwrite_desc, (VOPFUNC)vn_bwrite }, { &vnop_pagein_desc, (VOPFUNC)cd9660_pagein }, /* Pagein */ { &vnop_pageout_desc, (VOPFUNC)cd9660_pageout }, /* Pageout */ { &vnop_blktooff_desc, (VOPFUNC)cd9660_blktooff }, /* blktooff */ { &vnop_offtoblk_desc, (VOPFUNC)cd9660_offtoblk }, /* offtoblk */ { &vnop_blockmap_desc, (VOPFUNC)cd9660_blockmap }, /* blockmap */ { (struct vnodeop_desc*)NULL, (VOPFUNC)NULL } }; struct vnodeopv_desc cd9660_specop_opv_desc = { &cd9660_specop_p, cd9660_specop_entries }; #if FIFO int (**cd9660_fifoop_p)(void *); struct vnodeopv_entry_desc cd9660_fifoop_entries[] = { { &vnop_default_desc, (VOPFUNC)vn_default_error }, { &vnop_lookup_desc, (VOPFUNC)fifo_lookup }, /* lookup */ { &vnop_create_desc, (VOPFUNC)fifo_create }, /* create */ { &vnop_mknod_desc, (VOPFUNC)fifo_mknod }, /* mknod */ { &vnop_open_desc, (VOPFUNC)fifo_open }, /* open */ { &vnop_close_desc, (VOPFUNC)fifo_close }, /* close */ { &vnop_getattr_desc, (VOPFUNC)cd9660_getattr }, /* getattr */ { &vnop_read_desc, (VOPFUNC)fifo_read }, /* read */ { &vnop_write_desc, (VOPFUNC)fifo_write }, /* write */ { &vnop_ioctl_desc, (VOPFUNC)fifo_ioctl }, /* ioctl */ { &vnop_select_desc, (VOPFUNC)fifo_select }, /* select */ { &vnop_mmap_desc, (VOPFUNC)fifo_mmap }, /* mmap */ { &vnop_fsync_desc, (VOPFUNC)fifo_fsync }, /* fsync */ { &vnop_remove_desc, (VOPFUNC)fifo_remove }, /* remove */ { &vnop_link_desc, (VOPFUNC)fifo_link } , /* link */ { &vnop_rename_desc, (VOPFUNC)fifo_rename }, /* rename */ { &vnop_mkdir_desc, (VOPFUNC)fifo_mkdir }, /* mkdir */ { &vnop_rmdir_desc, (VOPFUNC)fifo_rmdir }, /* rmdir */ { &vnop_symlink_desc, (VOPFUNC)fifo_symlink }, /* symlink */ { &vnop_readdir_desc, (VOPFUNC)fifo_readdir }, /* readdir */ { &vnop_readlink_desc, (VOPFUNC)fifo_readlink }, /* readlink */ { &vnop_inactive_desc, (VOPFUNC)cd9660_inactive },/* inactive */ { &vnop_reclaim_desc, (VOPFUNC)cd9660_reclaim }, /* reclaim */ { &vnop_strategy_desc, (VOPFUNC)fifo_strategy }, /* strategy */ { &vnop_pathconf_desc, (VOPFUNC)fifo_pathconf }, /* pathconf */ { &vnop_advlock_desc, (VOPFUNC)fifo_advlock }, /* advlock */ { &vnop_bwrite_desc, (VOPFUNC)vn_bwrite }, { &vnop_pagein_desc, (VOPFUNC)cd9660_pagein }, /* Pagein */ { &vnop_pageout_desc, (VOPFUNC)cd9660_pageout }, /* Pageout */ { &vnop_blktooff_desc, (VOPFUNC)cd9660_blktooff }, /* blktooff */ { &vnop_offtoblk_desc, (VOPFUNC)cd9660_offtoblk }, /* offtoblk */ { (struct vnodeop_desc*)NULL, (VOPFUNC)NULL } }; struct vnodeopv_desc cd9660_fifoop_opv_desc = { &cd9660_fifoop_p, cd9660_fifoop_entries }; #endif /* FIFO */