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Line 702: − + − * Index 0 is the start of a linked list that contains all invalid/inactive directories.+ − * Index 1 is the start of a linked list that contains all valid/active directories.+ − * Index 2 is the root directory.+ + + + + + + Line 716:
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Core file system
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=== Directory Table Entry ===
=== Save File Table ===
The save file table is similar to the RomFS file table, except the save file table uses linked lists instead of dictionaries.
The table contains a list of directory entries and a list of file entries. Their respective types are:<br />
'''SaveFsList<SaveFileTableEntry<SaveDirectoryInfo>>'''<br />
'''SaveFsList<SaveFileTableEntry<SaveFileInfo>>'''
==== Save File Table Entry ====
SaveFileTableEntry<class T>
{| class="wikitable"
{| class="wikitable"
| 0x00
| 0x00
| 4
| 4
| Parent directory node index
| Next entry index. A value of 0 indicates the end of the list.
|-
|-
| 0x04
| 0x04
| 64
| sizeof(T)
| Filename
| Value of type T.
|-
|}
==== Save File Info ====
Holds the information of a single file.
{| class="wikitable"
|-
|-
! Start
! Length
! Description
|-
|-
| 0x48
| 0x00
| 4
| 4
| First child directory node index
| Starting block index.
|-
|-
| 0x4c
| 0x04
| 8
| 8
| First child file node index
| File length in bytes.
|-
|-
| 0x54
| 0x0C
| 8
| 8
| Unused?
| Reserved.
|-
|}
==== Save Directory Info ====
Holds the information of a single directory.
{| class="wikitable"
|-
! Start
! Length
! Description
|-
| 0x00
| 4
| First child directory index. 0 if none.
|-
|-
| 0x5c
| 0x04
| 4
| 4
| Next directory node index in the chain of invalid or valid directories. If this is the first block in a list of length 0, this value will contain the total number of directory nodes.
| First child file index. 0 if none.
|-
| 0x08
| 0xC
| Reserved.
|-
|-
|}
|}
=== File Table Entry ===
=== Save FS List ===
SaveFsList<class T>
This is a linked list that is used internally by '''Save File Table''' as a key-value store. Integer/string pairs are used as keys. The list is represented as a single array so that it can be easily stored and read from a file. Entry indexes 0 and 1 are reserved.
Index 0 is the start of a list containing all free entries. When an item in the list is removed, the entry it was using is added to this list for future reuse.
Index 1 is the start of a list containing all currently used entries.
The first 8 bytes of the list are used as follows. Indexes 0 and 1 are included in these counts.
{| class="wikitable"
{| class="wikitable"
| 0x00
| 0x00
| 4
| 4
| Parent directory node index
| The size of the list. Freed entries that have not been reused are included in the count.
|-
|-
| 0x04
| 0x04
| 64
| 4
| Filename
| The current capacity of the list based on the number of bytes allocated.
|-
|}
==== Save FS List Key ====
{| class="wikitable"
|-
! Start
! Length
! Description
|-
|-
| 0x44
| 0x00
| 4
| 4
| Next sibling file node index
| 32-bit integer.
|-
|-
| 0x48
| 0x04
| 4
| 0x40
| Index of the block that the file starts at
| 0x40-byte string.
|-
|}
==== Save FS List Entry ====
{| class="wikitable"
|-
! Start
! Length
! Description
|-
|-
| 0x4c
| 0x00
| 8
| 0x44
| File size in bytes
| Key.
|-
|-
| 0x54
| 0x44
| 8
| sizeof(T)
| Unused?
| Value.
|-
|-
| 0x5c
| 0x44 + sizeof(T)
| 4
| 4
| Next file node index in the chain of invalid or valid files. If this is the first block in a list of length 0, this value will contain the total number of file nodes.
| Next entry node index. A value of 0 indicates the end of the list.
|-
|-
|}
|}