+++ /dev/null
-/**
- * @file iso9660.h
- * @author Lunaixsky (zelong56@gmail.com)
- * @brief ISO9660 File system header file. (Reference: ECMA-119, 4th ed.)
- * @version 0.1
- * @date 2022-10-03
- *
- * @copyright Copyright (c) 2022
- *
- */
-
-#ifndef __LUNAIX_ISO9660_H
-#define __LUNAIX_ISO9660_H
-
-#include <lunaix/types.h>
-
-// Volume Types
-#define ISO_VOLBOOT 0 // Boot Record
-#define ISO_VOLPRIM 1 // Primary
-#define ISO_VOLSUPP 2 // Supplementary
-#define ISO_VOLPART 3 // Partition
-#define ISO_VOLTERM 255 // Volume descriptor set terminator
-
-#define ISO_FHIDDEN 0x1 // a hidden file
-#define ISO_FDIR 0x2 // a directory file
-#define ISO_FASSOC 0x4 // a associated file
-#define ISO_FRECORD 0x8 // file store in iso record fashion
-#define ISO_FPROTECT 0x10 // file being protected by access control
-#define ISO_FEXTENTS 0x80 // the extent by this record is a file partial
-
-// NOTES:
-// Each Descriptor sized 1 logical block (2048 bytes in common cases)
-// ISO9660 store number in both-byte order. That is, for a d-bits number, it
-// will result in 2d bits of storage. The lower d-bits are little-endian and
-// upper d-bits are big-endian.
-
-struct iso_vol
-{
- u8_t type;
- u8_t std_id[5]; // CD001
- u8_t version;
-} PACKED;
-
-struct iso_vol_boot
-{
- struct iso_vol header;
- u8_t sys_id[32];
- u8_t boot_id[32];
- u8_t reserved; // align to data line width
-} PACKED;
-
-struct iso_datetime
-{
- u8_t year[4];
- u8_t month[2];
- u8_t day[2];
- u8_t hour[2];
- u8_t min[2];
- u8_t sec[2];
- u8_t ms[2];
- u8_t gmt;
-} PACKED;
-
-// (8.4) Describe a primary volume space
-struct iso_vol_primary
-{
- struct iso_vol header;
- u8_t reserved_1;
- u8_t sys_id[32];
- u8_t vol_id[32];
- u8_t reserved_2;
- u32_t sz_lo; // (8.4.8) only lower portion is valid.
- u32_t sz_hi;
- u8_t reserved_2;
- u32_t set_size;
- u32_t seq_num;
- u32_t lb_size;
- u32_t path_tbl_sz_lo; // lower partition - LE.
- u32_t path_tbl_sz_hi;
- u32_t lpath_tbl_ptr; // Type L Path table location (LBA)
- u32_t reserved_3[3]; // use type M if big endian machine.
- u8_t root_record[34];
- u8_t set_id[128];
- u8_t publisher_id[128];
- u8_t preparer_id[128];
- u8_t app_id[128];
- u8_t copyright_id[128];
- u8_t asbtract_id[128];
- u8_t bib_id[128];
- struct iso_datetime ctime; // creation
- struct iso_datetime mtime; // modification
- struct iso_datetime ex_time; // expiration
- struct iso_datetime ef_time; // effective
- u8_t fstruct_ver; // file structure version, don't care!
-} PACKED; // size 1124
-
-// Layout for Supplementary Vol. is almost identical to primary vol.
-// We ignore it for now. (see section 8.5, table 6)
-
-// (8.6) Describe a volume partition within a volume space
-struct iso_partition
-{
- struct iso_vol header;
- u8_t reserved;
- u8_t sys_id[32];
- u8_t part_id[32];
- u32_t part_addr_lo; // (8.6.7) only lower portion is valid.
- u32_t part_addr_hi;
- u32_t part_sz_lo; // (8.6.8) only lower portion is valid.
- u32_t part_sz_hi;
-} PACKED;
-
-// (6.10.4) MDU with variable record
-struct iso_var_mdu
-{
- u8_t len;
- u8_t content[0];
-} PACKED;
-
-// (9.1) Directory Record [Embedded into Variable MDU]
-struct iso_drecord
-{
- u8_t xattr_len;
- u32_t extent_lo; // location of extent, lower 32 bits is valid.
- u32_t extent_hi;
- u32_t data_sz_lo; // size of extent, lower 32 bits is valid.
- u32_t data_sz_hi;
- struct
- {
- u8_t year;
- u8_t month;
- u8_t hour;
- u8_t min;
- u8_t sec;
- u8_t gmt;
- } PACKED mktime; // Time the record is made, see 9.1.5
- u8_t flags;
- u8_t fu_sz; // size of file unit (FU)
- u8_t gap_sz; // size of gap if FU is interleaved.
- u32_t vol_seq;
- struct iso_var_mdu name;
-} PACKED;
-
-// (9.4) Path Table Record. [Embedded into Variable MDU]
-struct iso_precord
-{
- u8_t xattr_len;
- u32_t extent_addr;
- u8_t parent; // indexed into path table
- u8_t id[0]; // length = iso_var_mdu::len
-} PACKED;
-
-struct iso_xattr
-{
- u32_t owner;
- u32_t group;
- u16_t perm;
- struct iso_datetime ctime;
- struct iso_datetime mtime;
- struct iso_datetime ex_time;
- struct iso_datetime ef_time;
- u8_t record_fmt;
- u8_t record_attr;
- u8_t record_len;
- u32_t sys_id;
- u8_t reserved1[64];
- u8_t version;
- u8_t len_esc;
- u8_t reserved2[64];
- u32_t payload_sz;
- u8_t payload[0];
- // There is also a escape sequence after payload,
- // It however marked as optional, hence we ignore it.
-} PACKED;
-
-#endif /* __LUNAIX_ISO9660_H */
git://scm.lunaixsky.com / lunaix-os.git / blobdiff