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


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FreeBSD/Linux Kernel Cross Reference
sys/isofs/cd9660/iso.h

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    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).
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *      This product includes software developed by the University of
   21  *      California, Berkeley and its contributors.
   22  * 4. Neither the name of the University nor the names of its contributors
   23  *    may be used to endorse or promote products derived from this software
   24  *    without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   36  * SUCH DAMAGE.
   37  *
   38  *      @(#)iso.h       8.6 (Berkeley) 5/10/95
   39  * $FreeBSD: releng/5.2/sys/isofs/cd9660/iso.h 120492 2003-09-26 20:26:25Z fjoe $
   40  */
   41 
   42 #define ISODCL(from, to) (to - from + 1)
   43 
   44 struct iso_volume_descriptor {
   45         char type[ISODCL(1,1)]; /* 711 */
   46         char id[ISODCL(2,6)];
   47         char version[ISODCL(7,7)];
   48         char unused[ISODCL(8,8)];
   49         char type_sierra[ISODCL(9,9)]; /* 711 */
   50         char id_sierra[ISODCL(10,14)];
   51         char version_sierra[ISODCL(15,15)];
   52         char data[ISODCL(16,2048)];
   53 };
   54 
   55 /* volume descriptor types */
   56 #define ISO_VD_PRIMARY 1
   57 #define ISO_VD_SUPPLEMENTARY 2
   58 #define ISO_VD_END 255
   59 
   60 #define ISO_STANDARD_ID "CD001"
   61 #define ISO_ECMA_ID     "CDW01"
   62 
   63 #define ISO_SIERRA_ID   "CDROM"
   64 
   65 struct iso_primary_descriptor {
   66         char type                       [ISODCL (  1,   1)]; /* 711 */
   67         char id                         [ISODCL (  2,   6)];
   68         char version                    [ISODCL (  7,   7)]; /* 711 */
   69         char unused1                    [ISODCL (  8,   8)];
   70         char system_id                  [ISODCL (  9,  40)]; /* achars */
   71         char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
   72         char unused2                    [ISODCL ( 73,  80)];
   73         char volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
   74         char unused3                    [ISODCL ( 89, 120)];
   75         char volume_set_size            [ISODCL (121, 124)]; /* 723 */
   76         char volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
   77         char logical_block_size         [ISODCL (129, 132)]; /* 723 */
   78         char path_table_size            [ISODCL (133, 140)]; /* 733 */
   79         char type_l_path_table          [ISODCL (141, 144)]; /* 731 */
   80         char opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
   81         char type_m_path_table          [ISODCL (149, 152)]; /* 732 */
   82         char opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
   83         char root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
   84         char volume_set_id              [ISODCL (191, 318)]; /* dchars */
   85         char publisher_id               [ISODCL (319, 446)]; /* achars */
   86         char preparer_id                [ISODCL (447, 574)]; /* achars */
   87         char application_id             [ISODCL (575, 702)]; /* achars */
   88         char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
   89         char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
   90         char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
   91         char creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
   92         char modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
   93         char expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
   94         char effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
   95         char file_structure_version     [ISODCL (882, 882)]; /* 711 */
   96         char unused4                    [ISODCL (883, 883)];
   97         char application_data           [ISODCL (884, 1395)];
   98         char unused5                    [ISODCL (1396, 2048)];
   99 };
  100 #define ISO_DEFAULT_BLOCK_SIZE          2048
  101 
  102 /*
  103  * Used by Microsoft Joliet extension to ISO9660. Almost the same
  104  * as PVD, but byte position 8 is a flag, and 89-120 is for escape.
  105  */
  106 
  107 struct iso_supplementary_descriptor {
  108       char type                       [ISODCL (  1,   1)]; /* 711 */
  109       char id                         [ISODCL (  2,   6)];
  110       char version                    [ISODCL (  7,   7)]; /* 711 */
  111       char flags                      [ISODCL (  8,   8)]; /* 711? */
  112       char system_id                  [ISODCL (  9,  40)]; /* achars */
  113       char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
  114       char unused2                    [ISODCL ( 73,  80)];
  115       char volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
  116       char escape                     [ISODCL ( 89, 120)];
  117       char volume_set_size            [ISODCL (121, 124)]; /* 723 */
  118       char volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
  119       char logical_block_size         [ISODCL (129, 132)]; /* 723 */
  120       char path_table_size            [ISODCL (133, 140)]; /* 733 */
  121       char type_l_path_table          [ISODCL (141, 144)]; /* 731 */
  122       char opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
  123       char type_m_path_table          [ISODCL (149, 152)]; /* 732 */
  124       char opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
  125       char root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
  126       char volume_set_id              [ISODCL (191, 318)]; /* dchars */
  127       char publisher_id               [ISODCL (319, 446)]; /* achars */
  128       char preparer_id                [ISODCL (447, 574)]; /* achars */
  129       char application_id             [ISODCL (575, 702)]; /* achars */
  130       char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
  131       char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
  132       char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
  133       char creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
  134       char modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
  135       char expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
  136       char effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
  137       char file_structure_version     [ISODCL (882, 882)]; /* 711 */
  138       char unused4                    [ISODCL (883, 883)];
  139       char application_data           [ISODCL (884, 1395)];
  140       char unused5                    [ISODCL (1396, 2048)];
  141 };
  142 
  143 struct iso_sierra_primary_descriptor {
  144         char unknown1                   [ISODCL (  1,   8)]; /* 733 */
  145         char type                       [ISODCL (  9,   9)]; /* 711 */
  146         char id                         [ISODCL ( 10,  14)];
  147         char version                    [ISODCL ( 15,  15)]; /* 711 */
  148         char unused1                    [ISODCL ( 16,  16)];
  149         char system_id                  [ISODCL ( 17,  48)]; /* achars */
  150         char volume_id                  [ISODCL ( 49,  80)]; /* dchars */
  151         char unused2                    [ISODCL ( 81,  88)];
  152         char volume_space_size          [ISODCL ( 89,  96)]; /* 733 */
  153         char unused3                    [ISODCL ( 97, 128)];
  154         char volume_set_size            [ISODCL (129, 132)]; /* 723 */
  155         char volume_sequence_number     [ISODCL (133, 136)]; /* 723 */
  156         char logical_block_size         [ISODCL (137, 140)]; /* 723 */
  157         char path_table_size            [ISODCL (141, 148)]; /* 733 */
  158         char type_l_path_table          [ISODCL (149, 152)]; /* 731 */
  159         char opt_type_l_path_table      [ISODCL (153, 156)]; /* 731 */
  160         char unknown2                   [ISODCL (157, 160)]; /* 731 */
  161         char unknown3                   [ISODCL (161, 164)]; /* 731 */
  162         char type_m_path_table          [ISODCL (165, 168)]; /* 732 */
  163         char opt_type_m_path_table      [ISODCL (169, 172)]; /* 732 */
  164         char unknown4                   [ISODCL (173, 176)]; /* 732 */
  165         char unknown5                   [ISODCL (177, 180)]; /* 732 */
  166         char root_directory_record      [ISODCL (181, 214)]; /* 9.1 */
  167         char volume_set_id              [ISODCL (215, 342)]; /* dchars */
  168         char publisher_id               [ISODCL (343, 470)]; /* achars */
  169         char preparer_id                [ISODCL (471, 598)]; /* achars */
  170         char application_id             [ISODCL (599, 726)]; /* achars */
  171         char copyright_id               [ISODCL (727, 790)]; /* achars */
  172         char creation_date              [ISODCL (791, 806)]; /* ? */
  173         char modification_date          [ISODCL (807, 822)]; /* ? */
  174         char expiration_date            [ISODCL (823, 838)]; /* ? */
  175         char effective_date             [ISODCL (839, 854)]; /* ? */
  176         char file_structure_version     [ISODCL (855, 855)]; /* 711 */
  177         char unused4                    [ISODCL (856, 2048)];
  178 };
  179 
  180 struct iso_directory_record {
  181         char length                     [ISODCL (1, 1)]; /* 711 */
  182         char ext_attr_length            [ISODCL (2, 2)]; /* 711 */
  183         u_char extent                   [ISODCL (3, 10)]; /* 733 */
  184         u_char size                     [ISODCL (11, 18)]; /* 733 */
  185         char date                       [ISODCL (19, 25)]; /* 7 by 711 */
  186         char flags                      [ISODCL (26, 26)];
  187         char file_unit_size             [ISODCL (27, 27)]; /* 711 */
  188         char interleave                 [ISODCL (28, 28)]; /* 711 */
  189         char volume_sequence_number     [ISODCL (29, 32)]; /* 723 */
  190         char name_len                   [ISODCL (33, 33)]; /* 711 */
  191         char name                       [1];                    /* XXX */
  192 };
  193 /* can't take sizeof(iso_directory_record), because of possible alignment
  194    of the last entry (34 instead of 33) */
  195 #define ISO_DIRECTORY_RECORD_SIZE       33
  196 
  197 struct iso_extended_attributes {
  198         u_char owner                    [ISODCL (1, 4)]; /* 723 */
  199         u_char group                    [ISODCL (5, 8)]; /* 723 */
  200         u_char perm                     [ISODCL (9, 10)]; /* 9.5.3 */
  201         char ctime                      [ISODCL (11, 27)]; /* 8.4.26.1 */
  202         char mtime                      [ISODCL (28, 44)]; /* 8.4.26.1 */
  203         char xtime                      [ISODCL (45, 61)]; /* 8.4.26.1 */
  204         char ftime                      [ISODCL (62, 78)]; /* 8.4.26.1 */
  205         char recfmt                     [ISODCL (79, 79)]; /* 711 */
  206         char recattr                    [ISODCL (80, 80)]; /* 711 */
  207         u_char reclen                   [ISODCL (81, 84)]; /* 723 */
  208         char system_id                  [ISODCL (85, 116)]; /* achars */
  209         char system_use                 [ISODCL (117, 180)];
  210         char version                    [ISODCL (181, 181)]; /* 711 */
  211         char len_esc                    [ISODCL (182, 182)]; /* 711 */
  212         char reserved                   [ISODCL (183, 246)];
  213         u_char len_au                   [ISODCL (247, 250)]; /* 723 */
  214 };
  215 
  216 #ifdef _KERNEL
  217 
  218 /* CD-ROM Format type */
  219 enum ISO_FTYPE  { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP,
  220                   ISO_FTYPE_JOLIET, ISO_FTYPE_ECMA, ISO_FTYPE_HIGH_SIERRA };
  221 
  222 #ifndef ISOFSMNT_ROOT
  223 #define ISOFSMNT_ROOT   0
  224 #endif
  225 
  226 struct iso_mnt {
  227         int im_flags;
  228 
  229         struct mount *im_mountp;
  230         dev_t im_dev;
  231         struct vnode *im_devvp;
  232 
  233         int logical_block_size;
  234         int im_bshift;
  235         int im_bmask;
  236 
  237         int volume_space_size;
  238 
  239         char root[ISODCL (157, 190)];
  240         int root_extent;
  241         int root_size;
  242         enum ISO_FTYPE  iso_ftype;
  243 
  244         int rr_skip;
  245         int rr_skip0;
  246 
  247         int joliet_level;
  248 
  249         void *im_d2l;
  250         void *im_l2d;
  251 };
  252 
  253 #define VFSTOISOFS(mp)  ((struct iso_mnt *)((mp)->mnt_data))
  254 
  255 #define blkoff(imp, loc)        ((loc) & (imp)->im_bmask)
  256 #define lblktosize(imp, blk)    ((blk) << (imp)->im_bshift)
  257 #define lblkno(imp, loc)        ((loc) >> (imp)->im_bshift)
  258 #define blksize(imp, ip, lbn)   ((imp)->logical_block_size)
  259 
  260 int cd9660_vget_internal(struct mount *, ino_t, int, struct vnode **, int,
  261                          struct iso_directory_record *);
  262 int cd9660_init(struct vfsconf *);
  263 int cd9660_uninit(struct vfsconf *);
  264 #define cd9660_sysctl ((int (*)(int *, u_int, void *, size_t *, void *, \
  265                                 size_t, struct proc *))eopnotsupp)
  266 
  267 extern vop_t **cd9660_vnodeop_p;
  268 extern vop_t **cd9660_specop_p;
  269 extern vop_t **cd9660_fifoop_p;
  270 
  271 int isochar(u_char *, u_char *, int, u_short *, int *, int, void *);
  272 int isofncmp(u_char *, int, u_char *, int, int, int, void *, void *);
  273 void isofntrans(u_char *, int, u_char *, u_short *, int, int, int, int, void *);
  274 ino_t isodirino(struct iso_directory_record *, struct iso_mnt *);
  275 u_short sgetrune(const char *, size_t, char const **, int, void *);
  276 
  277 #endif /* _KERNEL */
  278 
  279 /*
  280  * The isonum_xxx functions are inlined anyway, and could come handy even
  281  * outside the kernel.  Thus we don't hide them here.
  282  */
  283 
  284 static __inline int isonum_711(u_char *);
  285 static __inline int
  286 isonum_711(p)
  287         u_char *p;
  288 {
  289         return *p;
  290 }
  291 
  292 static __inline int isonum_712(char *);
  293 static __inline int
  294 isonum_712(p)
  295         char *p;
  296 {
  297         return *p;
  298 }
  299 
  300 #ifndef UNALIGNED_ACCESS
  301 
  302 static __inline int isonum_723(u_char *);
  303 static __inline int
  304 isonum_723(p)
  305         u_char *p;
  306 {
  307         return *p|(p[1] << 8);
  308 }
  309 
  310 static __inline int isonum_733(u_char *);
  311 static __inline int
  312 isonum_733(p)
  313         u_char *p;
  314 {
  315         return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
  316 }
  317 
  318 #else /* UNALIGNED_ACCESS */
  319 
  320 #if BYTE_ORDER == LITTLE_ENDIAN
  321 
  322 static __inline int
  323 isonum_723(p)
  324         u_char *p
  325 {
  326         return *(u_int16t *)p;
  327 }
  328 
  329 static __inline int
  330 isonum_733(p)
  331         u_char *p;
  332 {
  333         return *(u_int32t *)p;
  334 }
  335 
  336 #endif
  337 
  338 #if BYTE_ORDER == BIG_ENDIAN
  339 
  340 static __inline int
  341 isonum_723(p)
  342         u_char *p
  343 {
  344         return *(u_int16t *)(p + 2);
  345 }
  346 
  347 static __inline int
  348 isonum_733(p)
  349         u_char *p;
  350 {
  351         return *(u_int32t *)(p + 4);
  352 }
  353 
  354 #endif
  355 
  356 #endif /* UNALIGNED_ACCESS */
  357 
  358 /*
  359  * Associated files have a leading '='.
  360  */
  361 #define ASSOCCHAR       '='

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