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). Joliet support was added by
9 * Joachim Kuebart (joki@kuebart.stuttgart.netsurf.de).
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94
40 * $FreeBSD: src/sys/isofs/cd9660/cd9660_util.c,v 1.13.2.1 2001/02/27 12:36:34 sobomax Exp $
43 #include <sys/param.h>
44 #include <sys/mount.h>
45 #include <sys/vnode.h>
46 #include <sys/iconv.h>
49 #include "cd9660_mount.h"
51 extern struct iconv_functions *cd9660_iconv;
54 * Get one character out of an iso filename
56 * Return number of bytes consumed
59 isochar(u_char *isofn, u_char *isoend, int joliet_level, u_short *c,
60 int *clen, int flags, void *handle)
63 char inbuf[3], outbuf[3], *inp, *outp;
66 if (joliet_level == 0 || isofn == isoend)
67 /* (00) and (01) are one byte in Joliet, too */
69 if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
71 inbuf[0]=(char)*(isofn - 1);
72 inbuf[1]=(char)*isofn;
76 cd9660_iconv->convchr(handle, (const char **)(void *)&inp,
79 if (clen) *clen = len;
82 *c |= (*(outp - len - 1) & 0xff) << (len << 3);
97 * translate and compare a filename
98 * returns (fn - isofn)
99 * Note: Version number plus ';' may be omitted.
102 isofncmp(u_char *fn, int fnlen, u_char *isofn, int isolen, int joliet_level,
103 int flags, void *handle, void *lhandle)
107 u_char *fnend = fn + fnlen, *isoend = isofn + isolen;
108 for (; fn < fnend; ) {
109 d = sgetrune(fn, fnend - fn, (char const **)&fn, flags, lhandle);
112 isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
116 for (i = 0; fn < fnend; i = i * 10 + *fn++ - '0') {
117 if (*fn < '0' || *fn > '9') {
121 for (j = 0; isofn != isoend; j = j * 10 + c - '0')
122 isofn += isochar(isofn, isoend,
124 NULL, flags, handle);
128 if (c >= 'A' && c <= 'Z') {
129 if (c + ('a' - 'A') != d) {
130 if (d >= 'a' && d <= 'z')
131 return d - ('a' - 'A') - c;
139 if (isofn != isoend) {
140 isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
145 if (isofn != isoend) {
146 isochar(isofn, isoend, joliet_level, &c,
147 NULL, flags, handle);
160 * translate a filename of length > 0
163 isofntrans(u_char *infn, int infnlen, u_char *outfn, u_short *outfnlen, int original,
164 int assoc, int joliet_level, int flags, void *handle)
167 u_char *outp = outfn, *infnend = infn + infnlen;
172 for (; infn != infnend; ) {
173 infn += isochar(infn, infnend, joliet_level, &c, &clen, flags, handle);
174 if (!original && !joliet_level && c >= 'A' && c <= 'Z')
176 else if (!original && c == ';') {
182 *outp++ = c >> (clen << 3);
184 *outfnlen = outp - outfn;
188 * same as sgetrune(3)
191 sgetrune(const char *string, size_t n, char const **result,
192 int flags, void *handle)
195 char outbuf[3], *outp;
197 len = i = (n < 2) ? n : 2;
200 if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
201 cd9660_iconv->convchr(handle, &string, &i, &outp, &j);
207 if (result) *result = string;
208 while(len--) c |= (*(string - len - 1) & 0xff) << (len << 3);