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. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94
36 * $FreeBSD: src/sys/isofs/cd9660/cd9660_util.c,v 1.13.2.1 2001/02/27 12:36:34 sobomax Exp $
39 #include <sys/param.h>
40 #include <sys/mount.h>
41 #include <sys/vnode.h>
42 #include <sys/iconv.h>
45 #include "cd9660_mount.h"
47 extern struct iconv_functions *cd9660_iconv;
50 * Get one character out of an iso filename
52 * Return number of bytes consumed
55 isochar(u_char *isofn, u_char *isoend, int joliet_level, u_short *c,
56 int *clen, int flags, void *handle)
59 char inbuf[3], outbuf[3], *inp, *outp;
62 if (joliet_level == 0 || isofn == isoend)
63 /* (00) and (01) are one byte in Joliet, too */
65 if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
67 inbuf[0]=(char)*(isofn - 1);
68 inbuf[1]=(char)*isofn;
72 cd9660_iconv->convchr(handle, (const char **)(void *)&inp,
75 if (clen) *clen = len;
78 *c |= (*(outp - len - 1) & 0xff) << (len << 3);
93 * translate and compare a filename
94 * returns (fn - isofn)
95 * Note: Version number plus ';' may be omitted.
98 isofncmp(u_char *fn, int fnlen, u_char *isofn, int isolen, int joliet_level,
99 int flags, void *handle, void *lhandle)
103 u_char *fnend = fn + fnlen, *isoend = isofn + isolen;
104 for (; fn < fnend; ) {
105 d = sgetrune(fn, fnend - fn, (char const **)&fn, flags, lhandle);
108 isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
112 for (i = 0; fn < fnend; i = i * 10 + *fn++ - '0') {
113 if (*fn < '0' || *fn > '9') {
117 for (j = 0; isofn != isoend; j = j * 10 + c - '0')
118 isofn += isochar(isofn, isoend,
120 NULL, flags, handle);
124 if (c >= 'A' && c <= 'Z') {
125 if (c + ('a' - 'A') != d) {
126 if (d >= 'a' && d <= 'z')
127 return d - ('a' - 'A') - c;
135 if (isofn != isoend) {
136 isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
141 if (isofn != isoend) {
142 isochar(isofn, isoend, joliet_level, &c,
143 NULL, flags, handle);
156 * translate a filename of length > 0
159 isofntrans(u_char *infn, int infnlen, u_char *outfn, u_short *outfnlen, int original,
160 int assoc, int joliet_level, int flags, void *handle)
163 u_char *outp = outfn, *infnend = infn + infnlen;
168 for (; infn != infnend; ) {
169 infn += isochar(infn, infnend, joliet_level, &c, &clen, flags, handle);
170 if (!original && !joliet_level && c >= 'A' && c <= 'Z')
172 else if (!original && c == ';') {
178 *outp++ = c >> (clen << 3);
180 *outfnlen = outp - outfn;
184 * same as sgetrune(3)
187 sgetrune(const char *string, size_t n, char const **result,
188 int flags, void *handle)
191 char outbuf[3], *outp;
193 len = i = (n < 2) ? n : 2;
196 if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
197 cd9660_iconv->convchr(handle, &string, &i, &outp, &j);
203 if (result) *result = string;
204 while(len--) c |= (*(string - len - 1) & 0xff) << (len << 3);