2 * Copyright (c) 1982, 1986, 1989, 1994, 1995
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley
6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
7 * Support code is derived from software contributed to Berkeley
8 * by Atsushi Murai (amurai@spec.co.jp).
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * @(#)cd9660_node.c 8.2 (Berkeley) 1/23/94
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/mount.h>
45 #include <sys/vnode.h>
46 #include <sys/malloc.h>
48 #include <sys/mutex.h>
50 #include <fs/cd9660/iso.h>
51 #include <fs/cd9660/cd9660_node.h>
52 #include <fs/cd9660/cd9660_mount.h>
54 static unsigned cd9660_chars2ui(unsigned char *begin, int len);
57 * Last reference to an inode, write the inode out and if necessary,
58 * truncate and deallocate the file.
62 struct vop_inactive_args /* {
67 struct vnode *vp = ap->a_vp;
68 struct thread *td = ap->a_td;
69 struct iso_node *ip = VTOI(vp);
72 if (prtactive && vrefcnt(vp) != 0)
73 vprint("cd9660_inactive: pushing active", vp);
77 * If we are done with the inode, reclaim it
78 * so that it can be reused immediately.
80 if (ip->inode.iso_mode == 0)
86 * Reclaim an inode so that it can be used for other purposes.
90 struct vop_reclaim_args /* {
95 struct vnode *vp = ap->a_vp;
96 struct iso_node *ip = VTOI(vp);
98 if (prtactive && vrefcnt(vp) != 0)
99 vprint("cd9660_reclaim: pushing active", vp);
101 * Destroy the vm object and flush associated pages.
103 vnode_destroy_vobject(vp);
105 * Remove the inode from its hash chain.
110 * Purge old data structures associated with the inode.
112 if (ip->i_mnt->im_devvp)
113 vrele(ip->i_mnt->im_devvp);
114 FREE(vp->v_data, M_ISOFSNODE);
123 cd9660_defattr(isodir, inop, bp, ftype)
124 struct iso_directory_record *isodir;
125 struct iso_node *inop;
127 enum ISO_FTYPE ftype;
129 struct buf *bp2 = NULL;
131 struct iso_extended_attributes *ap = NULL;
134 /* high sierra does not have timezone data, flag is one byte ahead */
135 if (isonum_711(ftype == ISO_FTYPE_HIGH_SIERRA?
136 &isodir->date[6]: isodir->flags)&2) {
137 inop->inode.iso_mode = S_IFDIR;
139 * If we return 2, fts() will assume there are no subdirectories
140 * (just links for the path and .), so instead we return 1.
142 inop->inode.iso_links = 1;
144 inop->inode.iso_mode = S_IFREG;
145 inop->inode.iso_links = 1;
148 && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT)
149 && (off = isonum_711(isodir->ext_attr_length))) {
150 cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL,
155 ap = (struct iso_extended_attributes *)bp->b_data;
157 if (isonum_711(ap->version) == 1) {
158 if (!(ap->perm[0]&0x40))
159 inop->inode.iso_mode |= VEXEC >> 6;
160 if (!(ap->perm[0]&0x10))
161 inop->inode.iso_mode |= VREAD >> 6;
162 if (!(ap->perm[0]&4))
163 inop->inode.iso_mode |= VEXEC >> 3;
164 if (!(ap->perm[0]&1))
165 inop->inode.iso_mode |= VREAD >> 3;
166 if (!(ap->perm[1]&0x40))
167 inop->inode.iso_mode |= VEXEC;
168 if (!(ap->perm[1]&0x10))
169 inop->inode.iso_mode |= VREAD;
170 inop->inode.iso_uid = isonum_723(ap->owner); /* what about 0? */
171 inop->inode.iso_gid = isonum_723(ap->group); /* what about 0? */
176 inop->inode.iso_mode |= VREAD|VEXEC|(VREAD|VEXEC)>>3|(VREAD|VEXEC)>>6;
177 inop->inode.iso_uid = (uid_t)0;
178 inop->inode.iso_gid = (gid_t)0;
188 cd9660_deftstamp(isodir,inop,bp,ftype)
189 struct iso_directory_record *isodir;
190 struct iso_node *inop;
192 enum ISO_FTYPE ftype;
194 struct buf *bp2 = NULL;
196 struct iso_extended_attributes *ap = NULL;
200 && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT)
201 && (off = isonum_711(isodir->ext_attr_length))) {
202 cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL,
207 ap = (struct iso_extended_attributes *)bp->b_data;
209 if (ftype != ISO_FTYPE_HIGH_SIERRA
210 && isonum_711(ap->version) == 1) {
211 if (!cd9660_tstamp_conv17(ap->ftime,&inop->inode.iso_atime))
212 cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_atime);
213 if (!cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_ctime))
214 inop->inode.iso_ctime = inop->inode.iso_atime;
215 if (!cd9660_tstamp_conv17(ap->mtime,&inop->inode.iso_mtime))
216 inop->inode.iso_mtime = inop->inode.iso_ctime;
221 cd9660_tstamp_conv7(isodir->date,&inop->inode.iso_ctime,ftype);
222 inop->inode.iso_atime = inop->inode.iso_ctime;
223 inop->inode.iso_mtime = inop->inode.iso_ctime;
230 cd9660_tstamp_conv7(pi,pu,ftype)
233 enum ISO_FTYPE ftype;
236 int y, m, d, hour, minute, second, tz;
244 if(ftype != ISO_FTYPE_HIGH_SIERRA)
247 /* original high sierra misses timezone data */
256 /* computes day number relative to Sept. 19th,1989 */
257 /* don't even *THINK* about changing formula. It works! */
258 days = 367*(y-1980)-7*(y+(m+9)/12)/4-3*((y+(m-9)/7)/100+1)/4+275*m/9+d-100;
261 * Changed :-) to make it relative to Jan. 1st, 1970
262 * and to disambiguate negative division
264 days = 367*(y-1960)-7*(y+(m+9)/12)/4-3*((y+(m+9)/12-1)/100+1)/4+275*m/9+d-239;
266 crtime = ((((days * 24) + hour) * 60 + minute) * 60) + second;
268 /* timezone offset is unreliable on some disks */
269 if (-48 <= tz && tz <= 52)
270 crtime -= tz * 15 * 60;
278 cd9660_chars2ui(begin,len)
284 for (rc = 0; --len >= 0;) {
286 rc += *begin++ - '0';
292 cd9660_tstamp_conv17(pi,pu)
298 /* year:"0001"-"9999" -> -1900 */
299 buf[0] = cd9660_chars2ui(pi,4) - 1900;
301 /* month: " 1"-"12" -> 1 - 12 */
302 buf[1] = cd9660_chars2ui(pi + 4,2);
304 /* day: " 1"-"31" -> 1 - 31 */
305 buf[2] = cd9660_chars2ui(pi + 6,2);
307 /* hour: " 0"-"23" -> 0 - 23 */
308 buf[3] = cd9660_chars2ui(pi + 8,2);
310 /* minute:" 0"-"59" -> 0 - 59 */
311 buf[4] = cd9660_chars2ui(pi + 10,2);
313 /* second:" 0"-"59" -> 0 - 59 */
314 buf[5] = cd9660_chars2ui(pi + 12,2);
316 /* difference of GMT */
319 return cd9660_tstamp_conv7(buf, pu, ISO_FTYPE_DEFAULT);
323 isodirino(isodir, imp)
324 struct iso_directory_record *isodir;
329 ino = (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length))