11541Srgrimes/*- 222521Sdyson * Copyright (c) 1982, 1986, 1989, 1994, 1995 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * This code is derived from software contributed to Berkeley 61541Srgrimes * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 71541Srgrimes * Support code is derived from software contributed to Berkeley 81541Srgrimes * by Atsushi Murai (amurai@spec.co.jp). 91541Srgrimes * 101541Srgrimes * Redistribution and use in source and binary forms, with or without 111541Srgrimes * modification, are permitted provided that the following conditions 121541Srgrimes * are met: 131541Srgrimes * 1. Redistributions of source code must retain the above copyright 141541Srgrimes * notice, this list of conditions and the following disclaimer. 151541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 161541Srgrimes * notice, this list of conditions and the following disclaimer in the 171541Srgrimes * documentation and/or other materials provided with the distribution. 181541Srgrimes * 4. Neither the name of the University nor the names of its contributors 191541Srgrimes * may be used to endorse or promote products derived from this software 201541Srgrimes * without specific prior written permission. 211541Srgrimes * 221541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 231541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 241541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 251541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 261541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 271541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 281541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 291541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 301541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 311541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 321541Srgrimes * SUCH DAMAGE. 331541Srgrimes * 341541Srgrimes * @(#)cd9660_node.c 8.2 (Berkeley) 1/23/94 351541Srgrimes */ 361541Srgrimes 37116181Sobrien#include <sys/cdefs.h> 38116181Sobrien__FBSDID("$FreeBSD$"); 39116181Sobrien 401541Srgrimes#include <sys/param.h> 411541Srgrimes#include <sys/systm.h> 421541Srgrimes#include <sys/mount.h> 4360041Sphk#include <sys/bio.h> 441541Srgrimes#include <sys/buf.h> 451541Srgrimes#include <sys/vnode.h> 461541Srgrimes#include <sys/malloc.h> 471541Srgrimes#include <sys/stat.h> 4871576Sjasone#include <sys/mutex.h> 491541Srgrimes 50166639Srodrigc#include <fs/cd9660/iso.h> 51166639Srodrigc#include <fs/cd9660/cd9660_node.h> 52166639Srodrigc#include <fs/cd9660/cd9660_mount.h> 531541Srgrimes 5492765Salfredstatic unsigned cd9660_chars2ui(unsigned char *begin, int len); 5512597Sbde 561541Srgrimes/* 571541Srgrimes * Last reference to an inode, write the inode out and if necessary, 581541Srgrimes * truncate and deallocate the file. 591541Srgrimes */ 601541Srgrimesint 611541Srgrimescd9660_inactive(ap) 621541Srgrimes struct vop_inactive_args /* { 631541Srgrimes struct vnode *a_vp; 6483366Sjulian struct thread *a_td; 651541Srgrimes } */ *ap; 661541Srgrimes{ 671541Srgrimes struct vnode *vp = ap->a_vp; 68131526Sphk struct iso_node *ip = VTOI(vp); 693106Sgpalmer int error = 0; 708876Srgrimes 711541Srgrimes /* 721541Srgrimes * If we are done with the inode, reclaim it 731541Srgrimes * so that it can be reused immediately. 741541Srgrimes */ 7522521Sdyson if (ip->inode.iso_mode == 0) 76234607Strasz vrecycle(vp); 771541Srgrimes return error; 781541Srgrimes} 791541Srgrimes 801541Srgrimes/* 811541Srgrimes * Reclaim an inode so that it can be used for other purposes. 821541Srgrimes */ 831541Srgrimesint 841541Srgrimescd9660_reclaim(ap) 851541Srgrimes struct vop_reclaim_args /* { 861541Srgrimes struct vnode *a_vp; 8783366Sjulian struct thread *a_td; 881541Srgrimes } */ *ap; 891541Srgrimes{ 90131526Sphk struct vnode *vp = ap->a_vp; 918876Srgrimes 921541Srgrimes /* 93154487Salfred * Destroy the vm object and flush associated pages. 94154487Salfred */ 95154487Salfred vnode_destroy_vobject(vp); 96154487Salfred /* 971541Srgrimes * Remove the inode from its hash chain. 981541Srgrimes */ 99143577Sphk vfs_hash_remove(vp); 100143577Sphk 1011541Srgrimes /* 1021541Srgrimes * Purge old data structures associated with the inode. 1031541Srgrimes */ 104184205Sdes free(vp->v_data, M_ISOFSNODE); 1051541Srgrimes vp->v_data = NULL; 1061549Srgrimes return (0); 1071541Srgrimes} 1081541Srgrimes 1091541Srgrimes/* 1101541Srgrimes * File attributes 1111541Srgrimes */ 1121541Srgrimesvoid 11322521Sdysoncd9660_defattr(isodir, inop, bp, ftype) 1141541Srgrimes struct iso_directory_record *isodir; 1151541Srgrimes struct iso_node *inop; 1161541Srgrimes struct buf *bp; 1175651Sjoerg enum ISO_FTYPE ftype; 1181541Srgrimes{ 1191541Srgrimes struct buf *bp2 = NULL; 1201541Srgrimes struct iso_mnt *imp; 1211541Srgrimes struct iso_extended_attributes *ap = NULL; 1221541Srgrimes int off; 1238876Srgrimes 1245651Sjoerg /* high sierra does not have timezone data, flag is one byte ahead */ 1255651Sjoerg if (isonum_711(ftype == ISO_FTYPE_HIGH_SIERRA? 1265651Sjoerg &isodir->date[6]: isodir->flags)&2) { 1271541Srgrimes inop->inode.iso_mode = S_IFDIR; 1281541Srgrimes /* 1291541Srgrimes * If we return 2, fts() will assume there are no subdirectories 1301541Srgrimes * (just links for the path and .), so instead we return 1. 1311541Srgrimes */ 1321541Srgrimes inop->inode.iso_links = 1; 1331541Srgrimes } else { 1341541Srgrimes inop->inode.iso_mode = S_IFREG; 1351541Srgrimes inop->inode.iso_links = 1; 1361541Srgrimes } 1371541Srgrimes if (!bp 13822521Sdyson && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT) 1391541Srgrimes && (off = isonum_711(isodir->ext_attr_length))) { 14030474Sphk cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL, 14122521Sdyson &bp2); 1421541Srgrimes bp = bp2; 1431541Srgrimes } 1441541Srgrimes if (bp) { 14522521Sdyson ap = (struct iso_extended_attributes *)bp->b_data; 146131526Sphk 1471541Srgrimes if (isonum_711(ap->version) == 1) { 1481541Srgrimes if (!(ap->perm[0]&0x40)) 149183577Strasz inop->inode.iso_mode |= S_IXOTH; 1501541Srgrimes if (!(ap->perm[0]&0x10)) 151183577Strasz inop->inode.iso_mode |= S_IROTH; 1521541Srgrimes if (!(ap->perm[0]&4)) 153183577Strasz inop->inode.iso_mode |= S_IXGRP; 1541541Srgrimes if (!(ap->perm[0]&1)) 155183577Strasz inop->inode.iso_mode |= S_IRGRP; 1561541Srgrimes if (!(ap->perm[1]&0x40)) 157183577Strasz inop->inode.iso_mode |= S_IXUSR; 1581541Srgrimes if (!(ap->perm[1]&0x10)) 159183577Strasz inop->inode.iso_mode |= S_IRUSR; 1601541Srgrimes inop->inode.iso_uid = isonum_723(ap->owner); /* what about 0? */ 1611541Srgrimes inop->inode.iso_gid = isonum_723(ap->group); /* what about 0? */ 1621541Srgrimes } else 1631541Srgrimes ap = NULL; 1641541Srgrimes } 1651541Srgrimes if (!ap) { 166183577Strasz inop->inode.iso_mode |= S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 1671541Srgrimes inop->inode.iso_uid = (uid_t)0; 1681541Srgrimes inop->inode.iso_gid = (gid_t)0; 1691541Srgrimes } 1701541Srgrimes if (bp2) 1711541Srgrimes brelse(bp2); 1721541Srgrimes} 1731541Srgrimes 1741541Srgrimes/* 1751541Srgrimes * Time stamps 1761541Srgrimes */ 1771541Srgrimesvoid 1785651Sjoergcd9660_deftstamp(isodir,inop,bp,ftype) 1791541Srgrimes struct iso_directory_record *isodir; 1801541Srgrimes struct iso_node *inop; 1811541Srgrimes struct buf *bp; 1825651Sjoerg enum ISO_FTYPE ftype; 1831541Srgrimes{ 1841541Srgrimes struct buf *bp2 = NULL; 1851541Srgrimes struct iso_mnt *imp; 1861541Srgrimes struct iso_extended_attributes *ap = NULL; 1871541Srgrimes int off; 1888876Srgrimes 1891541Srgrimes if (!bp 19022521Sdyson && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT) 1911541Srgrimes && (off = isonum_711(isodir->ext_attr_length))) { 19230474Sphk cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL, 19322521Sdyson &bp2); 1941541Srgrimes bp = bp2; 1951541Srgrimes } 1961541Srgrimes if (bp) { 19722521Sdyson ap = (struct iso_extended_attributes *)bp->b_data; 198131526Sphk 19922567Sbde if (ftype != ISO_FTYPE_HIGH_SIERRA 20022567Sbde && isonum_711(ap->version) == 1) { 2011541Srgrimes if (!cd9660_tstamp_conv17(ap->ftime,&inop->inode.iso_atime)) 2021541Srgrimes cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_atime); 2031541Srgrimes if (!cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_ctime)) 2041541Srgrimes inop->inode.iso_ctime = inop->inode.iso_atime; 2051541Srgrimes if (!cd9660_tstamp_conv17(ap->mtime,&inop->inode.iso_mtime)) 2061541Srgrimes inop->inode.iso_mtime = inop->inode.iso_ctime; 2071541Srgrimes } else 2081541Srgrimes ap = NULL; 2091541Srgrimes } 2101541Srgrimes if (!ap) { 2115651Sjoerg cd9660_tstamp_conv7(isodir->date,&inop->inode.iso_ctime,ftype); 2121541Srgrimes inop->inode.iso_atime = inop->inode.iso_ctime; 2131541Srgrimes inop->inode.iso_mtime = inop->inode.iso_ctime; 2141541Srgrimes } 2151541Srgrimes if (bp2) 2161541Srgrimes brelse(bp2); 2171541Srgrimes} 2181541Srgrimes 2191541Srgrimesint 2205651Sjoergcd9660_tstamp_conv7(pi,pu,ftype) 22122521Sdyson u_char *pi; 22222521Sdyson struct timespec *pu; 22322521Sdyson enum ISO_FTYPE ftype; 2241541Srgrimes{ 2251541Srgrimes int crtime, days; 2261541Srgrimes int y, m, d, hour, minute, second, tz; 2278876Srgrimes 2281541Srgrimes y = pi[0] + 1900; 2291541Srgrimes m = pi[1]; 2301541Srgrimes d = pi[2]; 2311541Srgrimes hour = pi[3]; 2321541Srgrimes minute = pi[4]; 2331541Srgrimes second = pi[5]; 2345651Sjoerg if(ftype != ISO_FTYPE_HIGH_SIERRA) 235185361Skientzle tz = ((signed char *)pi)[6]; /* Timezone value is signed. */ 2365651Sjoerg else 2375651Sjoerg /* original high sierra misses timezone data */ 2385651Sjoerg tz = 0; 2398876Srgrimes 2401541Srgrimes if (y < 1970) { 24118412Snate pu->tv_sec = 0; 24218412Snate pu->tv_nsec = 0; 2431541Srgrimes return 0; 2441541Srgrimes } else { 2451541Srgrimes#ifdef ORIGINAL 2461541Srgrimes /* computes day number relative to Sept. 19th,1989 */ 2471541Srgrimes /* don't even *THINK* about changing formula. It works! */ 2481541Srgrimes days = 367*(y-1980)-7*(y+(m+9)/12)/4-3*((y+(m-9)/7)/100+1)/4+275*m/9+d-100; 2491541Srgrimes#else 2501541Srgrimes /* 2511541Srgrimes * Changed :-) to make it relative to Jan. 1st, 1970 2521541Srgrimes * and to disambiguate negative division 2531541Srgrimes */ 2541541Srgrimes days = 367*(y-1960)-7*(y+(m+9)/12)/4-3*((y+(m+9)/12-1)/100+1)/4+275*m/9+d-239; 2551541Srgrimes#endif 2561541Srgrimes crtime = ((((days * 24) + hour) * 60 + minute) * 60) + second; 2578876Srgrimes 2581541Srgrimes /* timezone offset is unreliable on some disks */ 2591541Srgrimes if (-48 <= tz && tz <= 52) 2606603Sbde crtime -= tz * 15 * 60; 2611541Srgrimes } 26218412Snate pu->tv_sec = crtime; 26318412Snate pu->tv_nsec = 0; 2641541Srgrimes return 1; 2651541Srgrimes} 2661541Srgrimes 26722521Sdysonstatic u_int 2681541Srgrimescd9660_chars2ui(begin,len) 26922521Sdyson u_char *begin; 2701541Srgrimes int len; 2711541Srgrimes{ 27222521Sdyson u_int rc; 273131526Sphk 2741541Srgrimes for (rc = 0; --len >= 0;) { 2751541Srgrimes rc *= 10; 2761541Srgrimes rc += *begin++ - '0'; 2771541Srgrimes } 2781541Srgrimes return rc; 2791541Srgrimes} 2801541Srgrimes 2811541Srgrimesint 2821541Srgrimescd9660_tstamp_conv17(pi,pu) 28322521Sdyson u_char *pi; 2842806Sbde struct timespec *pu; 2851541Srgrimes{ 28622521Sdyson u_char buf[7]; 287131526Sphk 28822521Sdyson /* year:"0001"-"9999" -> -1900 */ 2891541Srgrimes buf[0] = cd9660_chars2ui(pi,4) - 1900; 2908876Srgrimes 2915651Sjoerg /* month: " 1"-"12" -> 1 - 12 */ 2921541Srgrimes buf[1] = cd9660_chars2ui(pi + 4,2); 2938876Srgrimes 2945651Sjoerg /* day: " 1"-"31" -> 1 - 31 */ 2951541Srgrimes buf[2] = cd9660_chars2ui(pi + 6,2); 2968876Srgrimes 2975651Sjoerg /* hour: " 0"-"23" -> 0 - 23 */ 2981541Srgrimes buf[3] = cd9660_chars2ui(pi + 8,2); 2998876Srgrimes 3005651Sjoerg /* minute:" 0"-"59" -> 0 - 59 */ 3011541Srgrimes buf[4] = cd9660_chars2ui(pi + 10,2); 3028876Srgrimes 3035651Sjoerg /* second:" 0"-"59" -> 0 - 59 */ 3041541Srgrimes buf[5] = cd9660_chars2ui(pi + 12,2); 3058876Srgrimes 3061541Srgrimes /* difference of GMT */ 3071541Srgrimes buf[6] = pi[16]; 3088876Srgrimes 3095651Sjoerg return cd9660_tstamp_conv7(buf, pu, ISO_FTYPE_DEFAULT); 3101541Srgrimes} 3111541Srgrimes 31222521Sdysonino_t 31322521Sdysonisodirino(isodir, imp) 3141541Srgrimes struct iso_directory_record *isodir; 3151541Srgrimes struct iso_mnt *imp; 3161541Srgrimes{ 31722521Sdyson ino_t ino; 31822521Sdyson 31922521Sdyson ino = (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length)) 32022521Sdyson << imp->im_bshift; 32122521Sdyson return (ino); 3221541Srgrimes} 323