2 * SPDX-License-Identifier: BSD-3-Clause
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley
8 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
9 * Support code is derived from software contributed to Berkeley
10 * by Atsushi Murai (amurai@spec.co.jp). Joliet support was added by
11 * Joachim Kuebart (joki@kuebart.stuttgart.netsurf.de).
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/mount.h>
46 #include <sys/vnode.h>
47 #include <sys/iconv.h>
49 #include <fs/cd9660/iso.h>
50 #include <fs/cd9660/cd9660_mount.h>
52 extern struct iconv_functions *cd9660_iconv;
55 * Get one character out of an iso filename
57 * Return number of bytes consumed
60 isochar(u_char *isofn, u_char *isoend, int joliet_level, u_short *c, int *clen,
61 int flags, void *handle)
64 char inbuf[3], outbuf[3], *inp, *outp;
68 if (joliet_level == 0 || isofn == isoend)
69 /* (00) and (01) are one byte in Joliet, too */
72 if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
74 inbuf[0]=(char)*(isofn - 1);
75 inbuf[1]=(char)*isofn;
79 cd9660_iconv->convchr(handle, __DECONST(const char **, &inp), &i,
82 if (clen) *clen = len;
85 *c |= (*(outp - len - 1) & 0xff) << (len << 3);
101 * translate and compare a filename
102 * returns (fn - isofn)
103 * Note: Version number plus ';' may be omitted.
106 isofncmp(u_char *fn, int fnlen, u_char *isofn, int isolen, int joliet_level,
107 int flags, void *handle, void *lhandle)
111 u_char *fnend = fn + fnlen, *isoend = isofn + isolen;
113 for (; fn < fnend; ) {
114 d = sgetrune(fn, fnend - fn, __DECONST(const char **, &fn),
118 isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
122 for (i = 0; fn < fnend; i = i * 10 + *fn++ - '0') {
123 if (*fn < '0' || *fn > '9') {
127 for (j = 0; isofn != isoend; j = j * 10 + c - '0')
128 isofn += isochar(isofn, isoend,
130 NULL, flags, handle);
134 if (c >= 'A' && c <= 'Z') {
135 if (c + ('a' - 'A') != d) {
136 if (d >= 'a' && d <= 'z')
137 return d - ('a' - 'A') - c;
145 if (isofn != isoend) {
146 isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
151 if (isofn != isoend) {
152 isochar(isofn, isoend, joliet_level, &c,
153 NULL, flags, handle);
166 * translate a filename of length > 0
169 isofntrans(u_char *infn, int infnlen, u_char *outfn, u_short *outfnlen,
170 int original, int assoc, int joliet_level, int flags, void *handle)
173 u_char *outp = outfn, *infnend = infn + infnlen;
179 for (; infn != infnend; ) {
180 infn += isochar(infn, infnend, joliet_level, &c, &clen, flags, handle);
182 if (!original && !joliet_level && c >= 'A' && c <= 'Z')
184 else if (!original && c == ';') {
190 *outp++ = c >> (clen << 3);
192 *outfnlen = outp - outfn;
196 * same as sgetrune(3)
199 sgetrune(const char *string, size_t n, char const **result, int flags,
203 char outbuf[3], *outp;
206 len = i = (n < 2) ? n : 2;
210 if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
211 cd9660_iconv->convchr(handle, (const char **)&string,
219 if (result) *result = string;
220 while(len--) c |= (*(string - len - 1) & 0xff) << (len << 3);