X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/e2fac8b15b12a7979f72090454d850e612fc5b13..b0d623f7f2ae71ed96e60569f61f9a9a27016e80:/bsd/isofs/cd9660/cd9660_node.c?ds=inline diff --git a/bsd/isofs/cd9660/cd9660_node.c b/bsd/isofs/cd9660/cd9660_node.c deleted file mode 100644 index 0b9ddcff8..000000000 --- a/bsd/isofs/cd9660/cd9660_node.c +++ /dev/null @@ -1,511 +0,0 @@ -/* - * Copyright (c) 2000-2003 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_node.c,v 1.13 1994/12/24 15:30:07 cgd Exp $ */ - -/*- - * Copyright (c) 1982, 1986, 1989, 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_node.c 8.5 (Berkeley) 12/5/94 - - - - * HISTORY - * 22-Jan-98 radar 1669467 - ISO 9660 CD support - jwc - * 17-Feb-98 radar 1669467 - changed lock protocols to use the lock manager - chw - - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -/* - * Structures associated with iso_node caching. - */ -struct iso_node **isohashtbl; -u_long isohash; -#define INOHASH(device, inum) (((device) + ((inum)>>12)) & isohash) - -#ifdef ISODEVMAP -struct iso_node **idvhashtbl; -u_long idvhash; -#define DNOHASH(device, inum) (((device) + ((inum)>>12)) & idvhash) -#endif - -/* defined in bsd/vfs/vfs_subr.c */ -extern int prtactive; /* 1 => print out reclaim of active vnodes */ - -extern u_char isonullname[]; -/* - * Initialize hash links for inodes and dnodes. - */ -int -cd9660_init(__unused struct vfsconf *cp) -{ - return 0; -} - -int -cd9660_hashinit(void) -{ - if (!isohashtbl) - isohashtbl = hashinit(desiredvnodes, M_ISOFSMNT, &isohash); -#ifdef ISODEVMAP - if (!idvhashtbl) - idvhashtbl = hashinit(desiredvnodes / 8, M_ISOFSMNT, &idvhash); -#endif - return 0; -} - -#ifdef ISODEVMAP -/* - * Enter a new node into the device hash list - */ -struct iso_dnode * -iso_dmap(dev_t device, ino_t inum, int create) -{ - register struct iso_dnode **dpp, *dp, *dq; - - dpp = &idvhashtbl[DNOHASH(device, inum)]; - for (dp = *dpp;; dp = dp->d_next) { - if (dp == NULL) - return (NULL); - if (inum == dp->i_number && device == dp->i_dev) - return (dp); - - if (!create) - return (NULL); - - MALLOC(dp, struct iso_dnode *, sizeof(struct iso_dnode), M_CACHE, - M_WAITOK); - dp->i_dev = dev; - dp->i_number = ino; - - if (dq = *dpp) - dq->d_prev = dp->d_next; - dp->d_next = dq; - dp->d_prev = dpp; - *dpp = dp; - - return (dp); -} - -void -iso_dunmap(dev_t device) -{ - struct iso_dnode **dpp, *dp, *dq; - - for (dpp = idvhashtbl; dpp <= idvhashtbl + idvhash; dpp++) { - for (dp = *dpp; dp != NULL; dp = dq) - dq = dp->d_next; - if (device == dp->i_dev) { - if (dq) - dq->d_prev = dp->d_prev; - *dp->d_prev = dq; - FREE(dp, M_CACHE); - } - } - } -} -#endif - -/* - * Use the device/inum pair to find the incore inode, and return a pointer - * to it. If it is in core, but locked, wait for it. - */ -struct vnode * -cd9660_ihashget(dev_t device, ino_t inum, __unused struct proc *p) -{ - register struct iso_node *ip; - struct vnode *vp; - uint32_t vid; - -retry: - for (ip = isohashtbl[INOHASH(device, inum)]; ip; ip = ip->i_next) { - if (inum == ip->i_number && device == ip->i_dev) { - - if (ISSET(ip->i_flag, ISO_INALLOC)) { - /* - * inode is being created... wait for it - * to be ready for consumption - */ - SET(ip->i_flag, ISO_INWALLOC); - tsleep((caddr_t)ip, PINOD, "cd9960_ihashget", 0); - goto retry; - } - vp = ITOV(ip); - /* - * the vid needs to be grabbed before we drop - * lock protecting the hash - */ - vid = vnode_vid(vp); - - /* - * we currently depend on running under the FS funnel - * when we do proper locking and advertise ourselves - * as thread safe, we'll need a lock to protect the - * hash lookup... this is where we would drop it - */ - if (vnode_getwithvid(vp, vid)) { - /* - * If vnode is being reclaimed, or has - * already changed identity, no need to wait - */ - return (NULL); - } - return (vp); - } - } - return (NULL); -} - -/* - * Insert the inode into the hash table, and return it locked. - */ -void -cd9660_ihashins(struct iso_node *ip) -{ - struct iso_node **ipp, *iq; - - /* lock the inode, then put it on the appropriate hash list */ - - ipp = &isohashtbl[INOHASH(ip->i_dev, ip->i_number)]; - if ((iq = *ipp)) - iq->i_prev = &ip->i_next; - ip->i_next = iq; - ip->i_prev = ipp; - *ipp = ip; -} - -/* - * Remove the inode from the hash table. - */ -void -cd9660_ihashrem(register struct iso_node *ip) -{ - register struct iso_node *iq; - - if ((iq = ip->i_next)) - iq->i_prev = ip->i_prev; - *ip->i_prev = iq; -#if 1 /* was ifdef DIAGNOSTIC */ - ip->i_next = NULL; - ip->i_prev = NULL; -#endif -} - -/* - * Last reference to an inode... if we're done with - * it, go ahead and recycle it for other use - */ -int -cd9660_inactive(struct vnop_inactive_args *ap) -{ - vnode_t vp = ap->a_vp; - struct iso_node *ip = VTOI(vp); - - /* - * If we are done with the inode, reclaim it - * so that it can be reused immediately. - */ - if (ip->inode.iso_mode == 0) - vnode_recycle(vp); - - return 0; -} - -/* - * Reclaim an inode so that it can be used for other purposes. - */ -int -cd9660_reclaim(struct vnop_reclaim_args *ap) -{ - vnode_t vp = ap->a_vp; - struct iso_node *ip = VTOI(vp); - - vnode_removefsref(vp); - /* - * Remove the inode from its hash chain. - */ - cd9660_ihashrem(ip); - - if (ip->i_devvp) { - vnode_t devvp = ip->i_devvp; - ip->i_devvp = NULL; - vnode_rele(devvp); - } - vnode_clearfsnode(vp); - - if (ip->i_namep != isonullname) - FREE(ip->i_namep, M_TEMP); - if (ip->i_riff != NULL) - FREE(ip->i_riff, M_TEMP); - FREE_ZONE(ip, sizeof(struct iso_node), M_ISOFSNODE); - - return (0); -} - -/* - * File attributes - */ -void -cd9660_defattr(struct iso_directory_record *isodir, struct iso_node *inop, - struct buf *bp) -{ - struct buf *bp2 = NULL; - struct iso_mnt *imp; - struct iso_extended_attributes *ap = NULL; - int off; - - if ( isonum_711(isodir->flags) & directoryBit ) { - inop->inode.iso_mode = S_IFDIR; - /* - * If we return 2, fts() will assume there are no subdirectories - * (just links for the path and .), so instead we return 1. - */ - inop->inode.iso_links = 1; - } else { - inop->inode.iso_mode = S_IFREG; - inop->inode.iso_links = 1; - } - if (!bp - && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT) - && (off = isonum_711(isodir->ext_attr_length))) { - cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL, &bp2); - bp = bp2; - } - if (bp) { - ap = (struct iso_extended_attributes *)((char *)0 + buf_dataptr(bp)); - - if (isonum_711(ap->version) == 1) { - if (!(ap->perm[0]&0x40)) - inop->inode.iso_mode |= VEXEC >> 6; - if (!(ap->perm[0]&0x10)) - inop->inode.iso_mode |= VREAD >> 6; - if (!(ap->perm[0]&4)) - inop->inode.iso_mode |= VEXEC >> 3; - if (!(ap->perm[0]&1)) - inop->inode.iso_mode |= VREAD >> 3; - if (!(ap->perm[1]&0x40)) - inop->inode.iso_mode |= VEXEC; - if (!(ap->perm[1]&0x10)) - inop->inode.iso_mode |= VREAD; - inop->inode.iso_uid = isonum_723(ap->owner); /* what about 0? */ - inop->inode.iso_gid = isonum_723(ap->group); /* what about 0? */ - } else - ap = NULL; - } - if (!ap) { - inop->inode.iso_mode |= VREAD|VWRITE|VEXEC|(VREAD|VEXEC)>>3|(VREAD|VEXEC)>>6; - inop->inode.iso_uid = ISO_UNKNOWNUID; - inop->inode.iso_gid = ISO_UNKNOWNGID; - } - if (bp2) - buf_brelse(bp2); -} - -/* - * Time stamps - */ -void -cd9660_deftstamp(struct iso_directory_record *isodir, struct iso_node *inop, - struct buf *bp) -{ - struct buf *bp2 = NULL; - struct iso_mnt *imp; - struct iso_extended_attributes *ap = NULL; - int off; - - if (!bp - && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT) - && (off = isonum_711(isodir->ext_attr_length))) - { - cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL, &bp2); - bp = bp2; - } - if (bp) { - ap = (struct iso_extended_attributes *)((char *)0 + buf_dataptr(bp)); - - if (isonum_711(ap->version) == 1) { - if (!cd9660_tstamp_conv17(ap->ftime,&inop->inode.iso_atime)) - cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_atime); - if (!cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_ctime)) - inop->inode.iso_ctime = inop->inode.iso_atime; - if (!cd9660_tstamp_conv17(ap->mtime,&inop->inode.iso_mtime)) - inop->inode.iso_mtime = inop->inode.iso_ctime; - } else - ap = NULL; - } - if (!ap) { - cd9660_tstamp_conv7(isodir->date,&inop->inode.iso_ctime); - inop->inode.iso_atime = inop->inode.iso_ctime; - inop->inode.iso_mtime = inop->inode.iso_ctime; - } - if (bp2) - buf_brelse(bp2); -} - -int -cd9660_tstamp_conv7(u_char *pi, struct timespec *pu) -{ - int crtime, days; - int y, m, d, hour, minute, second, mytz; - - y = pi[0] + 1900; - m = pi[1]; - d = pi[2]; - hour = pi[3]; - minute = pi[4]; - second = pi[5]; - mytz = pi[6]; - - if (y < 1970) { - pu->tv_sec = 0; - pu->tv_nsec = 0; - return 0; - } else { -#ifdef ORIGINAL - /* computes day number relative to Sept. 19th,1989 */ - /* don't even *THINK* about changing formula. It works! */ - days = 367*(y-1980)-7*(y+(m+9)/12)/4-3*((y+(m-9)/7)/100+1)/4+275*m/9+d-100; -#else - /* - * Changed :-) to make it relative to Jan. 1st, 1970 - * and to disambiguate negative division - */ - days = 367*(y-1960)-7*(y+(m+9)/12)/4-3*((y+(m+9)/12-1)/100+1)/4+275*m/9+d-239; -#endif - crtime = ((((days * 24) + hour) * 60 + minute) * 60) + second; - - /* timezone offset is unreliable on some disks */ - if (-48 <= mytz && mytz <= 52) - crtime -= mytz * 15 * 60; - } - pu->tv_sec = crtime; - pu->tv_nsec = 0; - return 1; -} - -static u_int -cd9660_chars2ui(u_char *begin, int len) -{ - u_int rc; - - for (rc = 0; --len >= 0;) { - rc *= 10; - rc += *begin++ - '0'; - } - return rc; -} - -int -cd9660_tstamp_conv17(u_char *pi, struct timespec *pu) -{ - u_char buf[7]; - - /* year:"0001"-"9999" -> -1900 */ - buf[0] = cd9660_chars2ui(pi,4) - 1900; - - /* month: " 1"-"12" -> 1 - 12 */ - buf[1] = cd9660_chars2ui(pi + 4,2); - - /* day: " 1"-"31" -> 1 - 31 */ - buf[2] = cd9660_chars2ui(pi + 6,2); - - /* hour: " 0"-"23" -> 0 - 23 */ - buf[3] = cd9660_chars2ui(pi + 8,2); - - /* minute:" 0"-"59" -> 0 - 59 */ - buf[4] = cd9660_chars2ui(pi + 10,2); - - /* second:" 0"-"59" -> 0 - 59 */ - buf[5] = cd9660_chars2ui(pi + 12,2); - - /* difference of GMT */ - buf[6] = pi[16]; - - return cd9660_tstamp_conv7(buf,pu); -} - -ino_t -isodirino(struct iso_directory_record *isodir, struct iso_mnt *imp) -{ - ino_t ino; - - ino = (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length)) - << imp->im_bshift; - return (ino); -}