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
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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
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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 $
41 * $DragonFly: src/sys/vfs/isofs/cd9660/cd9660_util.c,v 1.4 2004/04/12 23:18:55 cpressey Exp $
44 #include <sys/param.h>
45 #include <sys/mount.h>
46 #include <sys/vnode.h>
51 * XXX: limited support for loading of Unicode
52 * conversion routine as a kld at a run-time.
53 * Should be removed when native Unicode kernel
54 * interfaces have been introduced.
56 u_char (*cd9660_wchar2char)(u_int32_t wchar) = NULL;
59 * Get one character out of an iso filename
61 * Return number of bytes consumed
64 isochar(u_char *isofn, u_char *isoend, int joliet_level, u_char *c)
67 if (joliet_level == 0 || isofn == isoend)
68 /* (00) and (01) are one byte in Joliet, too */
71 /* No Unicode support yet :-( */
80 /* XXX: if Unicode conversion routine is loaded then use it */
81 if (cd9660_wchar2char != NULL)
82 *c = cd9660_wchar2char((*(isofn - 1) << 8) | *isofn);
88 * translate and compare a filename
89 * returns (fn - isofn)
90 * Note: Version number plus ';' may be omitted.
93 isofncmp(u_char *fn, int fnlen, u_char *isofn, int isolen, int joliet_level)
96 u_char c, *fnend = fn + fnlen, *isoend = isofn + isolen;
98 for (; fn != fnend; fn++) {
101 isofn += isochar(isofn, isoend, joliet_level, &c);
105 for (i = 0; fn != fnend; i = i * 10 + *fn++ - '0') {
106 if (*fn < '0' || *fn > '9') {
110 for (j = 0; isofn != isoend; j = j * 10 + c - '0')
111 isofn += isochar(isofn, isoend,
116 if (c >= 'A' && c <= 'Z') {
117 if (c + ('a' - 'A') != *fn) {
118 if (*fn >= 'a' && *fn <= 'z')
119 return *fn - ('a' - 'A') - c;
127 if (isofn != isoend) {
128 isofn += isochar(isofn, isoend, joliet_level, &c);
133 if (isofn != isoend) {
134 isochar(isofn, isoend, joliet_level, &c);
147 * translate a filename of length > 0
150 isofntrans(u_char *infn, int infnlen, u_char *outfn, u_short *outfnlen,
151 int original, int assoc, int joliet_level)
154 u_char c, d = '\0', *infnend = infn + infnlen;
157 *outfn++ = ASSOCCHAR;
160 for (; infn != infnend; fnidx++) {
161 infn += isochar(infn, infnend, joliet_level, &c);
163 if (!original && !joliet_level && c >= 'A' && c <= 'Z')
164 *outfn++ = c + ('a' - 'A');
165 else if (!original && c == ';') {