Annotation of sys/isofs/cd9660/iso.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: iso.h,v 1.14 2005/09/28 20:53:54 miod Exp $ */
! 2: /* $NetBSD: iso.h,v 1.20 1997/07/07 22:45:34 cgd Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1994
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to Berkeley
! 9: * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
! 10: * Support code is derived from software contributed to Berkeley
! 11: * by Atsushi Murai (amurai@spec.co.jp).
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: * 1. Redistributions of source code must retain the above copyright
! 17: * notice, this list of conditions and the following disclaimer.
! 18: * 2. Redistributions in binary form must reproduce the above copyright
! 19: * notice, this list of conditions and the following disclaimer in the
! 20: * documentation and/or other materials provided with the distribution.
! 21: * 3. Neither the name of the University nor the names of its contributors
! 22: * may be used to endorse or promote products derived from this software
! 23: * without specific prior written permission.
! 24: *
! 25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 35: * SUCH DAMAGE.
! 36: *
! 37: * @(#)iso.h 8.4 (Berkeley) 12/5/94
! 38: */
! 39:
! 40: /*
! 41: * Definitions describing ISO9660 file system structure, as well as
! 42: * the functions necessary to access fields of ISO9660 file system
! 43: * structures.
! 44: */
! 45:
! 46: #define ISODCL(from, to) (to - from + 1)
! 47:
! 48: struct iso_volume_descriptor {
! 49: char type[ISODCL(1,1)]; /* 711 */
! 50: char id[ISODCL(2,6)];
! 51: char version[ISODCL(7,7)];
! 52: char data[ISODCL(8,2048)];
! 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: struct iso_primary_descriptor {
! 64: char type [ISODCL ( 1, 1)]; /* 711 */
! 65: char id [ISODCL ( 2, 6)];
! 66: char version [ISODCL ( 7, 7)]; /* 711 */
! 67: char unused1 [ISODCL ( 8, 8)];
! 68: char system_id [ISODCL ( 9, 40)]; /* achars */
! 69: char volume_id [ISODCL ( 41, 72)]; /* dchars */
! 70: char unused2 [ISODCL ( 73, 80)];
! 71: char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
! 72: char unused3 [ISODCL ( 89, 120)];
! 73: char volume_set_size [ISODCL (121, 124)]; /* 723 */
! 74: char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
! 75: char logical_block_size [ISODCL (129, 132)]; /* 723 */
! 76: char path_table_size [ISODCL (133, 140)]; /* 733 */
! 77: char type_l_path_table [ISODCL (141, 144)]; /* 731 */
! 78: char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
! 79: char type_m_path_table [ISODCL (149, 152)]; /* 732 */
! 80: char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
! 81: char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
! 82: char volume_set_id [ISODCL (191, 318)]; /* dchars */
! 83: char publisher_id [ISODCL (319, 446)]; /* achars */
! 84: char preparer_id [ISODCL (447, 574)]; /* achars */
! 85: char application_id [ISODCL (575, 702)]; /* achars */
! 86: char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
! 87: char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
! 88: char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
! 89: char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
! 90: char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
! 91: char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
! 92: char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
! 93: char file_structure_version [ISODCL (882, 882)]; /* 711 */
! 94: char unused4 [ISODCL (883, 883)];
! 95: char application_data [ISODCL (884, 1395)];
! 96: char unused5 [ISODCL (1396, 2048)];
! 97: };
! 98: #define ISO_DEFAULT_BLOCK_SHIFT 11
! 99: #define ISO_DEFAULT_BLOCK_SIZE (1<<ISO_DEFAULT_BLOCK_SHIFT)
! 100:
! 101: /*
! 102: * Used by Microsoft Joliet extension to ISO9660. Almost the same
! 103: * as PVD, but byte position 8 is a flag, and 89-120 is for escape.
! 104: */
! 105:
! 106: struct iso_supplementary_descriptor {
! 107: char type [ISODCL ( 1, 1)]; /* 711 */
! 108: char id [ISODCL ( 2, 6)];
! 109: char version [ISODCL ( 7, 7)]; /* 711 */
! 110: char flags [ISODCL ( 8, 8)];
! 111: char system_id [ISODCL ( 9, 40)]; /* achars */
! 112: char volume_id [ISODCL ( 41, 72)]; /* dchars */
! 113: char unused2 [ISODCL ( 73, 80)];
! 114: char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
! 115: char escape [ISODCL ( 89, 120)];
! 116: char volume_set_size [ISODCL (121, 124)]; /* 723 */
! 117: char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
! 118: char logical_block_size [ISODCL (129, 132)]; /* 723 */
! 119: char path_table_size [ISODCL (133, 140)]; /* 733 */
! 120: char type_l_path_table [ISODCL (141, 144)]; /* 731 */
! 121: char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
! 122: char type_m_path_table [ISODCL (149, 152)]; /* 732 */
! 123: char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
! 124: char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
! 125: char volume_set_id [ISODCL (191, 318)]; /* dchars */
! 126: char publisher_id [ISODCL (319, 446)]; /* achars */
! 127: char preparer_id [ISODCL (447, 574)]; /* achars */
! 128: char application_id [ISODCL (575, 702)]; /* achars */
! 129: char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
! 130: char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
! 131: char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
! 132: char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
! 133: char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
! 134: char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
! 135: char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
! 136: char file_structure_version [ISODCL (882, 882)]; /* 711 */
! 137: char unused4 [ISODCL (883, 883)];
! 138: char application_data [ISODCL (884, 1395)];
! 139: char unused5 [ISODCL (1396, 2048)];
! 140: };
! 141:
! 142: struct iso_directory_record {
! 143: char length [ISODCL (1, 1)]; /* 711 */
! 144: char ext_attr_length [ISODCL (2, 2)]; /* 711 */
! 145: u_char extent [ISODCL (3, 10)]; /* 733 */
! 146: u_char size [ISODCL (11, 18)]; /* 733 */
! 147: char date [ISODCL (19, 25)]; /* 7 by 711 */
! 148: char flags [ISODCL (26, 26)];
! 149: char file_unit_size [ISODCL (27, 27)]; /* 711 */
! 150: char interleave [ISODCL (28, 28)]; /* 711 */
! 151: char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
! 152: char name_len [ISODCL (33, 33)]; /* 711 */
! 153: char name [1]; /* XXX */
! 154: };
! 155: /* can't take sizeof(iso_directory_record), because of possible alignment
! 156: of the last entry (34 instead of 33) */
! 157: #define ISO_DIRECTORY_RECORD_SIZE 33
! 158:
! 159: struct iso_extended_attributes {
! 160: u_char owner [ISODCL (1, 4)]; /* 723 */
! 161: u_char group [ISODCL (5, 8)]; /* 723 */
! 162: u_char perm [ISODCL (9, 10)]; /* 9.5.3 */
! 163: char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
! 164: char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
! 165: char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
! 166: char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
! 167: char recfmt [ISODCL (79, 79)]; /* 711 */
! 168: char recattr [ISODCL (80, 80)]; /* 711 */
! 169: u_char reclen [ISODCL (81, 84)]; /* 723 */
! 170: char system_id [ISODCL (85, 116)]; /* achars */
! 171: char system_use [ISODCL (117, 180)];
! 172: char version [ISODCL (181, 181)]; /* 711 */
! 173: char len_esc [ISODCL (182, 182)]; /* 711 */
! 174: char reserved [ISODCL (183, 246)];
! 175: u_char len_au [ISODCL (247, 250)]; /* 723 */
! 176: };
! 177:
! 178: static __inline int isonum_711(u_char *) __attribute__ ((__unused__));
! 179: static __inline int isonum_712(char *) __attribute__ ((__unused__));
! 180: static __inline int isonum_721(u_char *) __attribute__ ((__unused__));
! 181: static __inline int isonum_722(u_char *) __attribute__ ((__unused__));
! 182: static __inline int isonum_723(u_char *) __attribute__ ((__unused__));
! 183: static __inline int isonum_731(u_char *) __attribute__ ((__unused__));
! 184: static __inline int isonum_732(u_char *) __attribute__ ((__unused__));
! 185: static __inline int isonum_733(u_char *) __attribute__ ((__unused__));
! 186:
! 187: /* 7.1.1: unsigned char */
! 188: static __inline int
! 189: isonum_711(u_char *p)
! 190: {
! 191: return *p;
! 192: }
! 193:
! 194: /* 7.1.2: signed(?) char */
! 195: static __inline int
! 196: isonum_712(char *p)
! 197: {
! 198: return *p;
! 199: }
! 200:
! 201: /* 7.2.1: unsigned little-endian 16-bit value. NOT USED IN KERNEL. */
! 202: static __inline int
! 203: isonum_721(p)
! 204: u_char *p;
! 205: {
! 206: #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == LITTLE_ENDIAN)
! 207: return *(u_int16_t *)p;
! 208: #else
! 209: return *p|((char)p[1] << 8);
! 210: #endif
! 211: }
! 212:
! 213: /* 7.2.2: unsigned big-endian 16-bit value. NOT USED IN KERNEL. */
! 214: static __inline int
! 215: isonum_722(p)
! 216: unsigned char *p;
! 217: {
! 218: #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == BIG_ENDIAN)
! 219: return *(u_int16_t *)p;
! 220: #else
! 221: return ((char)*p << 8)|p[1];
! 222: #endif
! 223: }
! 224:
! 225: /* 7.2.3: unsigned both-endian (little, then big) 16-bit value */
! 226: static __inline int
! 227: isonum_723(u_char *p)
! 228: {
! 229: #if !defined(__STRICT_ALIGNMENT) && \
! 230: ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN))
! 231: #if BYTE_ORDER == LITTLE_ENDIAN
! 232: return *(u_int16_t *)p;
! 233: #else
! 234: return *(u_int16_t *)(p + 2);
! 235: #endif
! 236: #else /* __STRICT_ALIGNMENT or weird byte order */
! 237: return *p|(p[1] << 8);
! 238: #endif
! 239: }
! 240:
! 241: /* 7.3.1: unsigned little-endian 32-bit value. NOT USED IN KERNEL. */
! 242: static __inline int
! 243: isonum_731(p)
! 244: u_char *p;
! 245: {
! 246: #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == LITTLE_ENDIAN)
! 247: return *(u_int32_t *)p;
! 248: #else
! 249: return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
! 250: #endif
! 251: }
! 252:
! 253: /* 7.3.2: unsigned big-endian 32-bit value. NOT USED IN KERNEL. */
! 254: static __inline int
! 255: isonum_732(p)
! 256: unsigned char *p;
! 257: {
! 258: #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == BIG_ENDIAN)
! 259: return *(u_int32_t *)p;
! 260: #else
! 261: return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3];
! 262: #endif
! 263: }
! 264:
! 265: /* 7.3.3: unsigned both-endian (little, then big) 32-bit value */
! 266: static __inline int
! 267: isonum_733(u_char *p)
! 268: {
! 269: #if !defined(__STRICT_ALIGNMENT) && \
! 270: ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN))
! 271: #if BYTE_ORDER == LITTLE_ENDIAN
! 272: return *(u_int32_t *)p;
! 273: #else
! 274: return *(u_int32_t *)(p + 4);
! 275: #endif
! 276: #else /* __STRICT_ALIGNMENT or weird byte order */
! 277: return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
! 278: #endif
! 279: }
! 280:
! 281: /*
! 282: * Associated files have a leading '='.
! 283: */
! 284: #define ASSOCCHAR '='
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