X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/c6de44b989e9d7286337e4cbf4d82d919f9120e6..270869139db617e29a35bb9ded41087bb702f9ac:/lunaix-os/includes/lunaix/fs/iso9660.h?ds=sidebyside

diff --git a/lunaix-os/includes/lunaix/fs/iso9660.h b/lunaix-os/includes/lunaix/fs/iso9660.h
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--- a/lunaix-os/includes/lunaix/fs/iso9660.h
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-/**
- * @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/clock.h>
-#include <lunaix/device.h>
-#include <lunaix/types.h>
-
-#define ISO_SIGNATURE_LO 0x30304443UL
-#define ISO_SIGNATURE_HI 0x31
-
-// 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
-
-#define ISO9660_BLKSZ 2048
-#define ISO9660_IDLEN 256
-
-// 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;
-
-// 32bits both-byte-order integer
-typedef struct iso_bbo32
-{
-    u32_t le; // little-endian
-    u32_t be; // big-endian
-} PACKED iso_bbo32_t;
-
-// 16bits both-byte-order integer
-typedef struct iso_bbo16
-{
-    u16_t le; // little-endian
-    u16_t be; // big-endian
-} PACKED iso_bbo16_t;
-
-// (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[8];
-    iso_bbo32_t vol_size;
-    u8_t reserved_3[32];
-    iso_bbo16_t set_size;
-    iso_bbo16_t seq_num;
-    iso_bbo16_t lb_size;
-    iso_bbo32_t ptable_size;
-    u32_t lpath_tbl_ptr; // Type L Path table location (LBA)
-    u32_t reserved_4[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];
-    iso_bbo32_t part_addr;
-    iso_bbo32_t part_size;
-} 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;
-    iso_bbo32_t extent_addr;
-    iso_bbo32_t data_size;
-    struct
-    {
-        u8_t year;
-        u8_t month;
-        u8_t day;
-        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.
-    iso_bbo16_t vol_seq;
-    struct iso_var_mdu name;
-} PACKED;
-
-// (9.4) L-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
-{
-    iso_bbo16_t owner;
-    iso_bbo16_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;
-    iso_bbo16_t record_len;
-    u32_t sys_id;
-    u8_t reserved1[64];
-    u8_t version;
-    u8_t len_esc;
-    u8_t reserved2[64];
-    iso_bbo16_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;
-
-struct iso_ptable
-{
-    u32_t start_lba;
-    u32_t current_lba;
-    u32_t size;
-    u32_t range_lower;
-    u32_t range_upper;
-    void* ptable_part;
-};
-
-struct iso_inode
-{
-    time_t ctime;
-    time_t mtime;
-    u32_t record_fmt;
-    u32_t fu_size;
-    u32_t gap_size;
-    struct llist_header* drecaches;
-};
-
-struct iso_drecache
-{
-    struct llist_header caches;
-    u32_t extent_addr;
-    u32_t data_size;
-    u32_t xattr_len;
-    u32_t fu_size;
-    u32_t gap_size;
-    u32_t flags;
-    struct hstr name;
-    char name_val[ISO9660_IDLEN];
-};
-
-struct iso_superblock
-{
-    u32_t volume_size;
-    u32_t lb_size;
-};
-
-struct iso_drecord*
-iso9660_get_drecord(struct iso_var_mdu* drecord_mdu);
-
-int
-iso9660_fill_inode(struct v_inode* inode, struct iso_drecache* dir, int ino);
-
-time_t
-iso9660_dt2unix(struct iso_datetime* isodt);
-
-void
-iso9660_init();
-
-int
-iso9660_setup_dnode(struct v_dnode* dnode, struct v_inode* inode);
-
-void
-iso9660_fill_drecache(struct iso_drecache* cache, struct iso_drecord* drec);
-
-int
-iso9660_dir_lookup(struct v_inode* this, struct v_dnode* dnode);
-
-int
-iso9660_readdir(struct v_file* file, struct dir_context* dctx);
-
-int
-iso9660_open(struct v_inode* this, struct v_file* file);
-
-int
-iso9660_close(struct v_file* file);
-
-int
-iso9660_read(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
-
-int
-iso9660_write(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
-
-int
-iso9660_seek(struct v_inode* inode, size_t offset);
-
-#endif /* __LUNAIX_ISO9660_H */