modules/ps2fs/pfs_types.h

   1 /*
   2 # _____     ___ ____     ___ ____
   3 #  ____|   |    ____|   |        | |____|
   4 # |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
   5 #-----------------------------------------------------------------------
   6 # Copyright 2001-2004, ps2dev - http://www.ps2dev.org
   7 # Licenced under Academic Free License version 2.0
   8 # Review ps2sdk README & LICENSE files for further details.
   9 #
  10 # $Id: pfs_types.h 577 2004-09-14 14:41:46Z pixel $
  11 */
  12
  13 #ifndef _PFS_TYPES_H
  14 #define _PFS_TYPES_H
  15
  16 ///////////////////////////////////////////////////////////////////////////////
  17 //   Pre-processor macros
  18
  19 // General constants
  20 #define PFS_BLOCKSIZE           0x2000
  21 #define PFS_SUPER_MAGIC         0x50465300      // "PFS\0" aka Playstation Filesystem
  22 #define PFS_JOUNRNAL_MAGIC      0x5046534C      // "PFSL" aka PFS Log
  23 #define PFS_SEGD_MAGIC          0x53454744      // "SEGD" aka segment descriptor direct
  24 #define PFS_SEGI_MAGIC          0x53454749      // "SEGI" aka segment descriptor indirect
  25 #define PFS_MAX_SUBPARTS        64
  26 #define PFS_NAME_LEN            255
  27 #define PFS_VERSION                     4
  28
  29 ///////////////////////////////////////////////////////////////////////////////
  30 //   Structures
  31
  32 // jounrnal/log
  33 typedef struct {
  34         u32 magic;                      // =PFS_JOUNRNAL_MAGIC
  35         u16 num;                        //
  36         u16 checksum;           //
  37         struct{
  38                 u32 sector;             // block/sector for partition
  39                 u16 sub;                // main(0)/sub(+1) partition
  40                 u16 logSector;  // block/sector offset in journal area
  41         } log[127];
  42 } pfs_journal_t;
  43
  44 typedef struct{
  45         u8 kLen;                        // key len/used for offset in to str for value
  46         u8 vLen;                        // value len
  47         u16 aLen;                       // allocated length == ((kLen+vLen+7) & ~3)
  48         char str[3];            // size = 3 so sizeof pfs_aentry_t=7 :P
  49 } pfs_aentry_t;
  50
  51 typedef struct {
  52         u32     inode;
  53         u8      sub;
  54         u8      pLen;           // path length
  55         u16     aLen;           // allocated length == ((pLen+8+3) & ~3)
  56         char    path[512-8];
  57 } pfs_dentry;
  58
  59 // Block number/count pair (used in inodes)
  60 typedef struct {
  61     u32 number;         //
  62     u16 subpart;        //
  63     u16 count;          //
  64 } pfs_blockinfo;
  65
  66 // Date/time descriptor
  67 typedef struct {
  68     u8 unused;  //
  69     u8 sec;             //
  70     u8 min;             //
  71     u8 hour;    //
  72     u8 day;             //
  73     u8 month;   //
  74     u16 year;   //
  75 } pfs_datetime;
  76
  77 // Superblock structure
  78 typedef struct {
  79     u32 magic;                  //
  80         u32 version;            //
  81     u32 unknown1;               //
  82         u32 fsckStat;           //
  83     u32 zone_size;              //
  84     u32 num_subs;               // number of subs attached to filesystem
  85         pfs_blockinfo log;      // block info for metadata log
  86         pfs_blockinfo root;     // block info for root directory
  87 } pfs_super_block;
  88
  89 // Inode structure
  90 typedef struct {
  91         u32 checksum;                           // Sum of all other words in the inode
  92         u32 magic;                                      //
  93         pfs_blockinfo inode_block;      // start block of inode
  94         pfs_blockinfo next_segment;     // next segment descriptor inode
  95         pfs_blockinfo last_segment;     // last segment descriptor inode
  96         pfs_blockinfo unused;           //
  97         pfs_blockinfo data[114];        //
  98         u16 mode;                                       // file mode
  99         u16 attr;                                       // file attributes
 100         u16 uid;                                        //
 101         u16 gid;                                        //
 102         pfs_datetime atime;                     //
 103         pfs_datetime ctime;                     //
 104         pfs_datetime mtime;                     //
 105         u64 size;                                       //
 106         u32 number_blocks;                      // number of blocks/zones used by file
 107         u32 number_data;                        // number of used entries in data array
 108         u32 number_segdesg;                     // number of "indirect blocks"/next segment descriptor's
 109         u32 subpart;                            // subpart of inode
 110         u32 reserved[4];                        //
 111 } pfs_inode;
 112
 113 #endif /* _PFS_TYPES_H */