#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_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
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
{
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;
+ 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_3[3]; // use type M if big endian machine.
+ 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 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;
+ iso_bbo32_t part_addr;
+ iso_bbo32_t part_size;
} PACKED;
// (6.10.4) MDU with variable record
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;
+ 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 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;
+ iso_bbo16_t vol_seq;
struct iso_var_mdu name;
} PACKED;
-// (9.4) Path Table Record. [Embedded into Variable MDU]
+// (9.4) L-Path Table Record. [Embedded into Variable MDU]
struct iso_precord
{
u8_t xattr_len;
struct iso_xattr
{
- u32_t owner;
- u32_t group;
+ iso_bbo16_t owner;
+ iso_bbo16_t group;
u16_t perm;
struct iso_datetime ctime;
struct iso_datetime mtime;
struct iso_datetime ef_time;
u8_t record_fmt;
u8_t record_attr;
- u8_t record_len;
+ iso_bbo16_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;
+ 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 */
git://scm.lunaixsky.com / lunaix-os.git / blobdiff