feat: better rtc framework which aims to remove single rtc restrictions.

[lunaix-os.git] / lunaix-os / includes / lunaix / fs / iso9660.h

diff --git a/lunaix-os/includes/lunaix/fs/iso9660.h b/lunaix-os/includes/lunaix/fs/iso9660.h
index edccadca58c057b8228926f4d1f2564c3b1b2bff..1a6aee233b6d5858187bd177faf5f5b37a769666 100644 (file)
--- a/lunaix-os/includes/lunaix/fs/iso9660.h
+++ b/lunaix-os/includes/lunaix/fs/iso9660.h
@@ -12,14 +12,20 @@
 #ifndef __LUNAIX_ISO9660_H
 #define __LUNAIX_ISO9660_H
 
 #ifndef __LUNAIX_ISO9660_H
 #define __LUNAIX_ISO9660_H
 

+#include <lunaix/clock.h>
+#include <lunaix/device.h>
+#include <lunaix/fs.h>

 #include <lunaix/types.h>
 
 #include <lunaix/types.h>
 

+#define ISO_SIGNATURE_LO 0x30304443UL
+#define ISO_SIGNATURE_HI 0x31
+

 // Volume Types
 // 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_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_FHIDDEN 0x1   // a hidden file
 #define ISO_FDIR 0x2      // a directory file


@@ -28,6 +34,10 @@
 #define ISO_FPROTECT 0x10 // file being protected by access control
 #define ISO_FEXTENTS 0x80 // the extent by this record is a file partial
 
 #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
+#define ISO9660_READ_OFF (ISO9660_BLKSZ * 16)
+

 // 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
 // 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


@@ -61,6 +71,20 @@ struct iso_datetime
     u8_t gmt;
 } PACKED;
 
     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
 {
 // (8.4) Describe a primary volume space
 struct iso_vol_primary
 {


@@ -68,17 +92,15 @@ struct iso_vol_primary
     u8_t reserved_1;
     u8_t sys_id[32];
     u8_t vol_id[32];
     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 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 root_record[34];
     u8_t set_id[128];
     u8_t publisher_id[128];


@@ -104,10 +126,8 @@ struct iso_partition
     u8_t reserved;
     u8_t sys_id[32];
     u8_t part_id[32];
     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
 } PACKED;
 
 // (6.10.4) MDU with variable record


@@ -117,43 +137,35 @@ struct iso_var_mdu
     u8_t content[0];
 } PACKED;
 
     u8_t content[0];
 } PACKED;
 

+struct iso_datetime2
+{
+    u8_t year;
+    u8_t month;
+    u8_t day;
+    u8_t hour;
+    u8_t min;
+    u8_t sec;
+    u8_t gmt;
+} PACKED;
+

 // (9.1) Directory Record [Embedded into Variable MDU]
 struct iso_drecord
 {
     u8_t xattr_len;
 // (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
+    iso_bbo32_t extent_addr;
+    iso_bbo32_t data_size;
+    struct iso_datetime2 mktime; // Time the record is made, see 9.1.5

     u8_t flags;
     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;
+    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;
 
     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
 {
 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;
     u16_t perm;
     struct iso_datetime ctime;
     struct iso_datetime mtime;


@@ -161,16 +173,183 @@ struct iso_xattr
     struct iso_datetime ef_time;
     u8_t record_fmt;
     u8_t record_attr;
     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 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;
 
     u8_t payload[0];
     // There is also a escape sequence after payload,
     // It however marked as optional, hence we ignore it.
 } PACKED;
 

+///
+/// -------- IEEE P1281 SUSP ---------
+///
+
+#define ISOSU_ER 0x5245
+#define ISOSU_ST 0x5453
+
+struct isosu_base
+{
+    u16_t signature;
+    u8_t length;
+    u8_t version;
+} PACKED;
+
+struct isosu_er
+{
+    struct isosu_base header;
+    u8_t id_len;
+    u8_t des_len;
+    u8_t src_len;
+    u8_t ext_ver;
+    u8_t id_des_src[0];
+} PACKED;
+
+///
+/// -------- Rock Ridge Extension --------
+///
+
+#define ISORR_PX 0x5850
+#define ISORR_PN 0x4e50
+#define ISORR_SL 0x4c53
+#define ISORR_NM 0x4d4e
+#define ISORR_TF 0x4654
+
+#define ISORR_NM_CONT 0x1
+
+#define ISORR_TF_CTIME 0x1
+#define ISORR_TF_MTIME 0x2
+#define ISORR_TF_ATIME 0x4
+#define ISORR_TF_LONG_FORM 0x80
+
+struct isorr_px
+{
+    struct isosu_base header;
+    iso_bbo32_t mode;
+    iso_bbo32_t link;
+    iso_bbo32_t uid;
+    iso_bbo32_t gid;
+    iso_bbo32_t sn;
+} PACKED;
+
+struct isorr_pn
+{
+    struct isosu_base header;
+    iso_bbo32_t dev_hi;
+    iso_bbo32_t dev_lo;
+} PACKED;
+
+struct isorr_sl
+{
+    struct isosu_base header;
+    u8_t flags;
+    char symlink[0];
+} PACKED;
+
+struct isorr_nm
+{
+    struct isosu_base header;
+    u8_t flags;
+    char name[0];
+} PACKED;
+
+struct isorr_tf
+{
+    struct isosu_base header;
+    u8_t flags;
+    char times[0];
+} PACKED;
+
+///
+/// -------- VFS integration ---------
+///
+
+struct iso_inode
+{
+    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 fno;
+    u32_t fu_size;
+    u32_t gap_size;
+    u32_t flags;
+    time_t ctime;
+    time_t atime;
+    time_t mtime;
+    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);
+
+time_t
+iso9660_dt22unix(struct iso_datetime2* isodt2);
+
+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,
+                      u32_t len);
+
+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);
+
+int
+isorr_parse_px(struct iso_drecache* cache, void* px_start);
+
+int
+isorr_parse_nm(struct iso_drecache* cache, void* nm_start);
+
+int
+isorr_parse_tf(struct iso_drecache* cache, void* tf_start);
+

 #endif /* __LUNAIX_ISO9660_H */
 #endif /* __LUNAIX_ISO9660_H */