The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/fs/cd9660/cd9660_util.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 1994
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    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).
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   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  * 4. 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.
   22  *
   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
   27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   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
   33  * SUCH DAMAGE.
   34  *
   35  *      @(#)cd9660_util.c       8.3 (Berkeley) 12/5/94
   36  */
   37 
   38 #include <sys/cdefs.h>
   39 __FBSDID("$FreeBSD$");
   40 
   41 #include <sys/param.h>
   42 #include <sys/systm.h>
   43 #include <sys/mount.h>
   44 #include <sys/vnode.h>
   45 #include <sys/iconv.h>
   46 
   47 #include <fs/cd9660/iso.h>
   48 #include <fs/cd9660/cd9660_mount.h>
   49 
   50 extern struct iconv_functions *cd9660_iconv;
   51 
   52 /*
   53  * Get one character out of an iso filename
   54  * Obey joliet_level
   55  * Return number of bytes consumed
   56  */
   57 int
   58 isochar(isofn, isoend, joliet_level, c, clen, flags, handle)
   59       u_char *isofn;
   60       u_char *isoend;
   61       int joliet_level;
   62       u_short *c;
   63       int *clen;
   64       int flags;
   65       void *handle;
   66 {
   67       size_t i, j, len;
   68       char inbuf[3], outbuf[3], *inp, *outp;
   69 
   70       *c = *isofn++;
   71       if (clen) *clen = 1;
   72       if (joliet_level == 0 || isofn == isoend)
   73               /* (00) and (01) are one byte in Joliet, too */
   74               return 1;
   75 
   76       if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
   77               i = j = len = 2;
   78               inbuf[0]=(char)*(isofn - 1);
   79               inbuf[1]=(char)*isofn;
   80               inbuf[2]='\0';
   81               inp = inbuf;
   82               outp = outbuf;
   83               cd9660_iconv->convchr(handle, (const char **)&inp, &i, &outp, &j);
   84               len -= j;
   85               if (clen) *clen = len;
   86               *c = '\0';
   87               while(len--)
   88                       *c |= (*(outp - len - 1) & 0xff) << (len << 3);
   89       } else {
   90               switch (*c) {
   91               default:
   92                       *c = '?';
   93                       break;
   94               case '\0':
   95                       *c = *isofn;
   96                       break;
   97               }
   98       }
   99 
  100       return 2;
  101 }
  102 
  103 /*
  104  * translate and compare a filename
  105  * returns (fn - isofn)
  106  * Note: Version number plus ';' may be omitted.
  107  */
  108 int
  109 isofncmp(fn, fnlen, isofn, isolen, joliet_level, flags, handle, lhandle)
  110         u_char *fn;
  111         int fnlen;
  112         u_char *isofn;
  113         int isolen;
  114         int joliet_level;
  115         int flags;
  116         void *handle;
  117         void *lhandle;
  118 {
  119         int i, j;
  120         u_short c, d;
  121         u_char *fnend = fn + fnlen, *isoend = isofn + isolen;
  122 
  123         for (; fn < fnend; ) {
  124                 d = sgetrune(fn, fnend - fn, (char const **)&fn, flags, lhandle);
  125                 if (isofn == isoend)
  126                         return d;
  127                 isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
  128                 if (c == ';') {
  129                         if (d != ';')
  130                                 return d;
  131                         for (i = 0; fn < fnend; i = i * 10 + *fn++ - '') {
  132                                 if (*fn < '' || *fn > '9') {
  133                                         return -1;
  134                                 }
  135                         }
  136                         for (j = 0; isofn != isoend; j = j * 10 + c - '')
  137                                 isofn += isochar(isofn, isoend,
  138                                                  joliet_level, &c,
  139                                                  NULL, flags, handle);
  140                         return i - j;
  141                 }
  142                 if (c != d) {
  143                         if (c >= 'A' && c <= 'Z') {
  144                                 if (c + ('a' - 'A') != d) {
  145                                         if (d >= 'a' && d <= 'z')
  146                                                 return d - ('a' - 'A') - c;
  147                                         else
  148                                                 return d - c;
  149                                 }
  150                         } else
  151                                 return d - c;
  152                 }
  153         }
  154         if (isofn != isoend) {
  155                 isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
  156                 switch (c) {
  157                 default:
  158                         return -c;
  159                 case '.':
  160                         if (isofn != isoend) {
  161                                 isochar(isofn, isoend, joliet_level, &c,
  162                                         NULL, flags, handle);
  163                                 if (c == ';')
  164                                         return 0;
  165                         }
  166                         return -1;
  167                 case ';':
  168                         return 0;
  169                 }
  170         }
  171         return 0;
  172 }
  173 
  174 /*
  175  * translate a filename of length > 0
  176  */
  177 void
  178 isofntrans(infn, infnlen, outfn, outfnlen, original, assoc, joliet_level, flags, handle)
  179         u_char *infn;
  180         int infnlen;
  181         u_char *outfn;
  182         u_short *outfnlen;
  183         int original;
  184         int assoc;
  185         int joliet_level;
  186         int flags;
  187         void *handle;
  188 {
  189         u_short c, d = '\0';
  190         u_char *outp = outfn, *infnend = infn + infnlen;
  191         int clen;
  192 
  193         if (assoc) {
  194                 *outp++ = ASSOCCHAR;
  195         }
  196         for (; infn != infnend; ) {
  197                 infn += isochar(infn, infnend, joliet_level, &c, &clen, flags, handle);
  198 
  199                 if (!original && !joliet_level && c >= 'A' && c <= 'Z')
  200                         c += ('a' - 'A');
  201                 else if (!original && c == ';') {
  202                         outp -= (d == '.');
  203                         break;
  204                 }
  205                 d = c;
  206                 while(clen--)
  207                         *outp++ = c >> (clen << 3);
  208         }
  209         *outfnlen = outp - outfn;
  210 }
  211 
  212 /*
  213  * same as sgetrune(3)
  214  */
  215 u_short
  216 sgetrune(string, n, result, flags, handle)
  217         const char *string;
  218         size_t n;
  219         char const **result;
  220         int flags;
  221         void *handle;
  222 {
  223         size_t i, j, len;
  224         char outbuf[3], *outp;
  225         u_short c = '\0';
  226 
  227         len = i = (n < 2) ? n : 2;
  228         j = 2;
  229         outp = outbuf;
  230 
  231         if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
  232                 cd9660_iconv->convchr(handle, (const char **)&string,
  233                         &i, &outp, &j);
  234                 len -= i;
  235         } else {
  236                 len = 1;
  237                 string++;
  238         }
  239 
  240         if (result) *result = string;
  241         while(len--) c |= (*(string - len - 1) & 0xff) << (len << 3);
  242         return (c);
  243 }

Cache object: c6511ff4604a30789a813bce167f4838


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.