freebsd-dev/sys/fs/cd9660/iso.h

301 lines
10 KiB
C

/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)iso.h 8.2 (Berkeley) 1/23/94
* $Id: iso.h,v 1.8 1995/11/09 08:13:35 bde Exp $
*/
#define ISODCL(from, to) (to - from + 1)
struct iso_volume_descriptor {
char type[ISODCL(1,1)]; /* 711 */
char id[ISODCL(2,6)];
char version[ISODCL(7,7)];
char unused[ISODCL(8,8)];
char type_sierra[ISODCL(9,9)]; /* 711 */
char id_sierra[ISODCL(10,14)];
char version_sierra[ISODCL(15,15)];
char data[ISODCL(16,2048)];
};
/* volume descriptor types */
#define ISO_VD_PRIMARY 1
#define ISO_VD_END 255
#define ISO_STANDARD_ID "CD001"
#define ISO_ECMA_ID "CDW01"
#define ISO_SIERRA_ID "CDROM"
struct iso_primary_descriptor {
char type [ISODCL ( 1, 1)]; /* 711 */
char id [ISODCL ( 2, 6)];
char version [ISODCL ( 7, 7)]; /* 711 */
char unused1 [ISODCL ( 8, 8)];
char system_id [ISODCL ( 9, 40)]; /* achars */
char volume_id [ISODCL ( 41, 72)]; /* dchars */
char unused2 [ISODCL ( 73, 80)];
char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
char unused3 [ISODCL ( 89, 120)];
char volume_set_size [ISODCL (121, 124)]; /* 723 */
char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
char logical_block_size [ISODCL (129, 132)]; /* 723 */
char path_table_size [ISODCL (133, 140)]; /* 733 */
char type_l_path_table [ISODCL (141, 144)]; /* 731 */
char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
char type_m_path_table [ISODCL (149, 152)]; /* 732 */
char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
char volume_set_id [ISODCL (191, 318)]; /* dchars */
char publisher_id [ISODCL (319, 446)]; /* achars */
char preparer_id [ISODCL (447, 574)]; /* achars */
char application_id [ISODCL (575, 702)]; /* achars */
char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
char file_structure_version [ISODCL (882, 882)]; /* 711 */
char unused4 [ISODCL (883, 883)];
char application_data [ISODCL (884, 1395)];
char unused5 [ISODCL (1396, 2048)];
};
#define ISO_DEFAULT_BLOCK_SIZE 2048
struct iso_sierra_primary_descriptor {
char unknown1 [ISODCL ( 1, 8)]; /* 733 */
char type [ISODCL ( 9, 9)]; /* 711 */
char id [ISODCL ( 10, 14)];
char version [ISODCL ( 15, 15)]; /* 711 */
char unused1 [ISODCL ( 16, 16)];
char system_id [ISODCL ( 17, 48)]; /* achars */
char volume_id [ISODCL ( 49, 80)]; /* dchars */
char unused2 [ISODCL ( 81, 88)];
char volume_space_size [ISODCL ( 89, 96)]; /* 733 */
char unused3 [ISODCL ( 97, 128)];
char volume_set_size [ISODCL (129, 132)]; /* 723 */
char volume_sequence_number [ISODCL (133, 136)]; /* 723 */
char logical_block_size [ISODCL (137, 140)]; /* 723 */
char path_table_size [ISODCL (141, 148)]; /* 733 */
char type_l_path_table [ISODCL (149, 152)]; /* 731 */
char opt_type_l_path_table [ISODCL (153, 156)]; /* 731 */
char unknown2 [ISODCL (157, 160)]; /* 731 */
char unknown3 [ISODCL (161, 164)]; /* 731 */
char type_m_path_table [ISODCL (165, 168)]; /* 732 */
char opt_type_m_path_table [ISODCL (169, 172)]; /* 732 */
char unknown4 [ISODCL (173, 176)]; /* 732 */
char unknown5 [ISODCL (177, 180)]; /* 732 */
char root_directory_record [ISODCL (181, 214)]; /* 9.1 */
char volume_set_id [ISODCL (215, 342)]; /* dchars */
char publisher_id [ISODCL (343, 470)]; /* achars */
char preparer_id [ISODCL (471, 598)]; /* achars */
char application_id [ISODCL (599, 726)]; /* achars */
char copyright_id [ISODCL (727, 790)]; /* achars */
char creation_date [ISODCL (791, 806)]; /* ? */
char modification_date [ISODCL (807, 822)]; /* ? */
char expiration_date [ISODCL (823, 838)]; /* ? */
char effective_date [ISODCL (839, 854)]; /* ? */
char file_structure_version [ISODCL (855, 855)]; /* 711 */
char unused4 [ISODCL (856, 2048)];
};
struct iso_directory_record {
char length [ISODCL (1, 1)]; /* 711 */
char ext_attr_length [ISODCL (2, 2)]; /* 711 */
unsigned char extent [ISODCL (3, 10)]; /* 733 */
unsigned char size [ISODCL (11, 18)]; /* 733 */
char date [ISODCL (19, 25)]; /* 7 by 711 */
char flags [ISODCL (26, 26)];
char file_unit_size [ISODCL (27, 27)]; /* 711 */
char interleave [ISODCL (28, 28)]; /* 711 */
char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
char name_len [ISODCL (33, 33)]; /* 711 */
char name [0];
};
/* can't take sizeof(iso_directory_record), because of possible alignment
of the last entry (34 instead of 33) */
#define ISO_DIRECTORY_RECORD_SIZE 33
struct iso_extended_attributes {
unsigned char owner [ISODCL (1, 4)]; /* 723 */
unsigned char group [ISODCL (5, 8)]; /* 723 */
unsigned char perm [ISODCL (9, 10)]; /* 9.5.3 */
char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
char recfmt [ISODCL (79, 79)]; /* 711 */
char recattr [ISODCL (80, 80)]; /* 711 */
unsigned char reclen [ISODCL (81, 84)]; /* 723 */
char system_id [ISODCL (85, 116)]; /* achars */
char system_use [ISODCL (117, 180)];
char version [ISODCL (181, 181)]; /* 711 */
char len_esc [ISODCL (182, 182)]; /* 711 */
char reserved [ISODCL (183, 246)];
unsigned char len_au [ISODCL (247, 250)]; /* 723 */
};
/* CD-ROM Format type */
enum ISO_FTYPE { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP,
ISO_FTYPE_ECMA, ISO_FTYPE_HIGH_SIERRA };
#ifndef ISOFSMNT_ROOT
#define ISOFSMNT_ROOT 0
#endif
struct iso_mnt {
int im_flags;
struct mount *im_mountp;
dev_t im_dev;
struct vnode *im_devvp;
int logical_block_size;
int im_bshift;
int im_bmask;
int volume_space_size;
char im_fsmnt[50];
struct netexport im_export;
char root[ISODCL (157, 190)];
int root_extent;
int root_size;
enum ISO_FTYPE iso_ftype;
int rr_skip;
int rr_skip0;
};
#define VFSTOISOFS(mp) ((struct iso_mnt *)((mp)->mnt_data))
#define iso_blkoff(imp, loc) ((loc) & (imp)->im_bmask)
#define iso_lblkno(imp, loc) ((loc) >> (imp)->im_bshift)
#define iso_blksize(imp, ip, lbn) ((imp)->logical_block_size)
#define iso_lblktosize(imp, blk) ((blk) << (imp)->im_bshift)
#define iso_lblktodaddr(imp, lbn) btodb(iso_lblktosize(imp, lbn))
#define iso_dblkinc(imp, lbn) ((lbn) + iso_lblktodaddr(imp, 1))
#define iso_dblkno(imp, loc) iso_lblktodaddr(imp, iso_lblkno(imp, loc))
int cd9660_init __P((void));
struct iso_node;
int iso_blkatoff __P((struct iso_node *ip, long offset, struct buf **bpp));
int iso_iget __P((struct iso_node *xp, ino_t ino, int relocated,
struct iso_node **ipp, struct iso_directory_record *isodir));
int iso_iput __P((struct iso_node *ip));
int iso_ilock __P((struct iso_node *ip));
int iso_iunlock __P((struct iso_node *ip));
int cd9660_mountroot __P((void));
extern vop_t **cd9660_vnodeop_p;
static int isonum_711 __P((unsigned char *p));
static int isonum_712 __P((char *p));
static int isonum_721 __P((unsigned char *p));
static int isonum_722 __P((unsigned char *p));
static int isonum_723 __P((unsigned char *p));
static int isonum_731 __P((unsigned char *p));
static int isonum_732 __P((unsigned char *p));
static int isonum_733 __P((unsigned char *p));
static inline int
isonum_711(p)
unsigned char *p;
{
return *p;
}
static inline int
isonum_712(p)
char *p;
{
return *p;
}
static inline int
isonum_721(p)
unsigned char *p;
{
return *p|((char)p[1] << 8);
}
static inline int
isonum_722(p)
unsigned char *p;
{
return ((char)*p << 8)|p[1];
}
static inline int
isonum_723(p)
unsigned char *p;
{
return isonum_721(p);
}
static inline int
isonum_731(p)
unsigned char *p;
{
return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
}
static inline int
isonum_732(p)
unsigned char *p;
{
return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3];
}
static inline int
isonum_733(p)
unsigned char *p;
{
return isonum_731(p);
}
int isofncmp __P((unsigned char *, int, unsigned char *, int));
void isofntrans __P((unsigned char *, int, unsigned char *, unsigned short *,
int, int));
/*
* Associated files have a leading '='.
*/
#define ASSOCCHAR '='