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Annotation of src/sys/fs/cd9660/iso.h, Revision 1.1

1.1     ! jdolecek    1: /*     $NetBSD: iso.h,v 1.22 1999/07/13 11:12:06 scw Exp $     */
        !             2:
        !             3: /*-
        !             4:  * Copyright (c) 1994
        !             5:  *     The Regents of the University of California.  All rights reserved.
        !             6:  *
        !             7:  * This code is derived from software contributed to Berkeley
        !             8:  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
        !             9:  * Support code is derived from software contributed to Berkeley
        !            10:  * by Atsushi Murai (amurai@spec.co.jp).
        !            11:  *
        !            12:  * Redistribution and use in source and binary forms, with or without
        !            13:  * modification, are permitted provided that the following conditions
        !            14:  * are met:
        !            15:  * 1. Redistributions of source code must retain the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer.
        !            17:  * 2. Redistributions in binary form must reproduce the above copyright
        !            18:  *    notice, this list of conditions and the following disclaimer in the
        !            19:  *    documentation and/or other materials provided with the distribution.
        !            20:  * 3. All advertising materials mentioning features or use of this software
        !            21:  *    must display the following acknowledgement:
        !            22:  *     This product includes software developed by the University of
        !            23:  *     California, Berkeley and its contributors.
        !            24:  * 4. Neither the name of the University nor the names of its contributors
        !            25:  *    may be used to endorse or promote products derived from this software
        !            26:  *    without specific prior written permission.
        !            27:  *
        !            28:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            29:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            30:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            31:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            32:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            33:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            34:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            35:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            36:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            37:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            38:  * SUCH DAMAGE.
        !            39:  *
        !            40:  *     @(#)iso.h       8.6 (Berkeley) 5/10/95
        !            41:  */
        !            42:
        !            43: /*
        !            44:  * Definitions describing ISO9660 file system structure, as well as
        !            45:  * the functions necessary to access fields of ISO9660 file system
        !            46:  * structures.
        !            47:  */
        !            48:
        !            49: #define ISODCL(from, to) (to - from + 1)
        !            50:
        !            51: struct iso_volume_descriptor {
        !            52:        char type[ISODCL(1,1)]; /* 711 */
        !            53:        char id[ISODCL(2,6)];
        !            54:        char version[ISODCL(7,7)];
        !            55:        char data[ISODCL(8,2048)];
        !            56: };
        !            57:
        !            58: /* volume descriptor types */
        !            59: #define ISO_VD_PRIMARY 1
        !            60: #define ISO_VD_SUPPLEMENTARY 2
        !            61: #define ISO_VD_END 255
        !            62:
        !            63: #define ISO_STANDARD_ID "CD001"
        !            64: #define ISO_ECMA_ID     "CDW01"
        !            65:
        !            66: struct iso_primary_descriptor {
        !            67:        char type                       [ISODCL (  1,   1)]; /* 711 */
        !            68:        char id                         [ISODCL (  2,   6)];
        !            69:        char version                    [ISODCL (  7,   7)]; /* 711 */
        !            70:        char unused1                    [ISODCL (  8,   8)];
        !            71:        char system_id                  [ISODCL (  9,  40)]; /* achars */
        !            72:        char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
        !            73:        char unused2                    [ISODCL ( 73,  80)];
        !            74:        char volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
        !            75:        char unused3                    [ISODCL ( 89, 120)];
        !            76:        char volume_set_size            [ISODCL (121, 124)]; /* 723 */
        !            77:        char volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
        !            78:        char logical_block_size         [ISODCL (129, 132)]; /* 723 */
        !            79:        char path_table_size            [ISODCL (133, 140)]; /* 733 */
        !            80:        char type_l_path_table          [ISODCL (141, 144)]; /* 731 */
        !            81:        char opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
        !            82:        char type_m_path_table          [ISODCL (149, 152)]; /* 732 */
        !            83:        char opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
        !            84:        char root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
        !            85:        char volume_set_id              [ISODCL (191, 318)]; /* dchars */
        !            86:        char publisher_id               [ISODCL (319, 446)]; /* achars */
        !            87:        char preparer_id                [ISODCL (447, 574)]; /* achars */
        !            88:        char application_id             [ISODCL (575, 702)]; /* achars */
        !            89:        char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
        !            90:        char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
        !            91:        char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
        !            92:        char creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
        !            93:        char modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
        !            94:        char expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
        !            95:        char effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
        !            96:        char file_structure_version     [ISODCL (882, 882)]; /* 711 */
        !            97:        char unused4                    [ISODCL (883, 883)];
        !            98:        char application_data           [ISODCL (884, 1395)];
        !            99:        char unused5                    [ISODCL (1396, 2048)];
        !           100: };
        !           101: #define ISO_DEFAULT_BLOCK_SIZE         2048
        !           102:
        !           103: struct iso_supplementary_descriptor {
        !           104:        char type                       [ISODCL (  1,   1)]; /* 711 */
        !           105:        char id                         [ISODCL (  2,   6)];
        !           106:        char version                    [ISODCL (  7,   7)]; /* 711 */
        !           107:        char flags                      [ISODCL (  8,   8)]; /* 711? */
        !           108:        char system_id                  [ISODCL (  9,  40)]; /* achars */
        !           109:        char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
        !           110:        char unused2                    [ISODCL ( 73,  80)];
        !           111:        char volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
        !           112:        char escape                     [ISODCL ( 89, 120)];
        !           113:        char volume_set_size            [ISODCL (121, 124)]; /* 723 */
        !           114:        char volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
        !           115:        char logical_block_size         [ISODCL (129, 132)]; /* 723 */
        !           116:        char path_table_size            [ISODCL (133, 140)]; /* 733 */
        !           117:        char type_l_path_table          [ISODCL (141, 144)]; /* 731 */
        !           118:        char opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
        !           119:        char type_m_path_table          [ISODCL (149, 152)]; /* 732 */
        !           120:        char opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
        !           121:        char root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
        !           122:        char volume_set_id              [ISODCL (191, 318)]; /* dchars */
        !           123:        char publisher_id               [ISODCL (319, 446)]; /* achars */
        !           124:        char preparer_id                [ISODCL (447, 574)]; /* achars */
        !           125:        char application_id             [ISODCL (575, 702)]; /* achars */
        !           126:        char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
        !           127:        char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
        !           128:        char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
        !           129:        char creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
        !           130:        char modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
        !           131:        char expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
        !           132:        char effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
        !           133:        char file_structure_version     [ISODCL (882, 882)]; /* 711 */
        !           134:        char unused4                    [ISODCL (883, 883)];
        !           135:        char application_data           [ISODCL (884, 1395)];
        !           136:        char unused5                    [ISODCL (1396, 2048)];
        !           137: };
        !           138:
        !           139: struct iso_directory_record {
        !           140:        char length                     [ISODCL (1, 1)]; /* 711 */
        !           141:        char ext_attr_length            [ISODCL (2, 2)]; /* 711 */
        !           142:        u_char extent                   [ISODCL (3, 10)]; /* 733 */
        !           143:        u_char size                     [ISODCL (11, 18)]; /* 733 */
        !           144:        char date                       [ISODCL (19, 25)]; /* 7 by 711 */
        !           145:        char flags                      [ISODCL (26, 26)];
        !           146:        char file_unit_size             [ISODCL (27, 27)]; /* 711 */
        !           147:        char interleave                 [ISODCL (28, 28)]; /* 711 */
        !           148:        char volume_sequence_number     [ISODCL (29, 32)]; /* 723 */
        !           149:        char name_len                   [ISODCL (33, 33)]; /* 711 */
        !           150:        char name                       [1];                    /* XXX */
        !           151: };
        !           152: /* can't take sizeof(iso_directory_record), because of possible alignment
        !           153:    of the last entry (34 instead of 33) */
        !           154: #define ISO_DIRECTORY_RECORD_SIZE      33
        !           155:
        !           156: struct iso_extended_attributes {
        !           157:        u_char owner                    [ISODCL (1, 4)]; /* 723 */
        !           158:        u_char group                    [ISODCL (5, 8)]; /* 723 */
        !           159:        u_char perm                     [ISODCL (9, 10)]; /* 9.5.3 */
        !           160:        char ctime                      [ISODCL (11, 27)]; /* 8.4.26.1 */
        !           161:        char mtime                      [ISODCL (28, 44)]; /* 8.4.26.1 */
        !           162:        char xtime                      [ISODCL (45, 61)]; /* 8.4.26.1 */
        !           163:        char ftime                      [ISODCL (62, 78)]; /* 8.4.26.1 */
        !           164:        char recfmt                     [ISODCL (79, 79)]; /* 711 */
        !           165:        char recattr                    [ISODCL (80, 80)]; /* 711 */
        !           166:        u_char reclen                   [ISODCL (81, 84)]; /* 723 */
        !           167:        char system_id                  [ISODCL (85, 116)]; /* achars */
        !           168:        char system_use                 [ISODCL (117, 180)];
        !           169:        char version                    [ISODCL (181, 181)]; /* 711 */
        !           170:        char len_esc                    [ISODCL (182, 182)]; /* 711 */
        !           171:        char reserved                   [ISODCL (183, 246)];
        !           172:        u_char len_au                   [ISODCL (247, 250)]; /* 723 */
        !           173: };
        !           174:
        !           175: static __inline int isonum_711 __P((u_char *)) __attribute__ ((unused));
        !           176: static __inline int isonum_712 __P((char *)) __attribute__ ((unused));
        !           177: static __inline int isonum_721 __P((u_char *)) __attribute__ ((unused));
        !           178: static __inline int isonum_722 __P((u_char *)) __attribute__ ((unused));
        !           179: static __inline int isonum_723 __P((u_char *)) __attribute__ ((unused));
        !           180: static __inline int isonum_731 __P((u_char *)) __attribute__ ((unused));
        !           181: static __inline int isonum_732 __P((u_char *)) __attribute__ ((unused));
        !           182: static __inline int isonum_733 __P((u_char *)) __attribute__ ((unused));
        !           183:
        !           184: /* 7.1.1: unsigned char */
        !           185: static __inline int
        !           186: #if __STDC__
        !           187: isonum_711(u_char *p)
        !           188: #else
        !           189: isonum_711(p)
        !           190:        u_char *p;
        !           191: #endif
        !           192: {
        !           193:        return *p;
        !           194: }
        !           195:
        !           196: /* 7.1.2: signed(?) char */
        !           197: static __inline int
        !           198: #if __STDC__
        !           199: isonum_712(char *p)
        !           200: #else
        !           201: isonum_712(p)
        !           202:        char *p;
        !           203: #endif
        !           204: {
        !           205:        return *p;
        !           206: }
        !           207:
        !           208: /* 7.2.1: unsigned little-endian 16-bit value.  NOT USED IN KERNEL. */
        !           209: static __inline int
        !           210: isonum_721(p)
        !           211:        u_char *p;
        !           212: {
        !           213: #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == LITTLE_ENDIAN)
        !           214:        return *(u_int16t *)p;
        !           215: #else
        !           216:        return *p|((char)p[1] << 8);
        !           217: #endif
        !           218: }
        !           219:
        !           220: /* 7.2.2: unsigned big-endian 16-bit value.  NOT USED IN KERNEL. */
        !           221: static __inline int
        !           222: isonum_722(p)
        !           223:        unsigned char *p;
        !           224: {
        !           225: #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == BIG_ENDIAN)
        !           226:        return *(u_int16t *)p;
        !           227: #else
        !           228:        return ((char)*p << 8)|p[1];
        !           229: #endif
        !           230: }
        !           231:
        !           232: /* 7.2.3: unsigned both-endian (little, then big) 16-bit value */
        !           233: static __inline int
        !           234: #if __STDC__
        !           235: isonum_723(u_char *p)
        !           236: #else
        !           237: isonum_723(p)
        !           238:        u_char *p;
        !           239: #endif
        !           240: {
        !           241: #if defined(UNALIGNED_ACCESS) && \
        !           242:     ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN))
        !           243: #if BYTE_ORDER == LITTLE_ENDIAN
        !           244:        return *(u_int16t *)p;
        !           245: #else
        !           246:        return *(u_int16t *)(p + 2);
        !           247: #endif
        !           248: #else /* !UNALIGNED_ACCESS or weird byte order */
        !           249:        return *p|(p[1] << 8);
        !           250: #endif
        !           251: }
        !           252:
        !           253: /* 7.3.1: unsigned little-endian 32-bit value.  NOT USED IN KERNEL. */
        !           254: static __inline int
        !           255: isonum_731(p)
        !           256:        u_char *p;
        !           257: {
        !           258: #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == LITTLE_ENDIAN)
        !           259:        return *(u_int32t *)p;
        !           260: #else
        !           261:        return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
        !           262: #endif
        !           263: }
        !           264:
        !           265: /* 7.3.2: unsigned big-endian 32-bit value.  NOT USED IN KERNEL. */
        !           266: static __inline int
        !           267: isonum_732(p)
        !           268:        unsigned char *p;
        !           269: {
        !           270: #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == BIG_ENDIAN)
        !           271:        return *(u_int32t *)p;
        !           272: #else
        !           273:        return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3];
        !           274: #endif
        !           275: }
        !           276:
        !           277: /* 7.3.3: unsigned both-endian (little, then big) 32-bit value */
        !           278: static __inline int
        !           279: #if __STDC__
        !           280: isonum_733(u_char *p)
        !           281: #else
        !           282: isonum_733(p)
        !           283:        u_char *p;
        !           284: #endif
        !           285: {
        !           286: #if defined(UNALIGNED_ACCESS) && \
        !           287:     ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN))
        !           288: #if BYTE_ORDER == LITTLE_ENDIAN
        !           289:        return *(u_int32t *)p;
        !           290: #else
        !           291:        return *(u_int32t *)(p + 4);
        !           292: #endif
        !           293: #else /* !UNALIGNED_ACCESS or weird byte order */
        !           294:        return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
        !           295: #endif
        !           296: }
        !           297:
        !           298: /*
        !           299:  * Associated files have a leading '='.
        !           300:  */
        !           301: #define        ASSOCCHAR       '='

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