Request
| Index Word | Description |
|---|---|
| 0 | Header code [0x080C00C2] |
| 1 | Archive idcode |
| 2 | LowPath.Type |
| 3 | LowPath.Size |
| 4 | (LowPath.Size<<14) | 2 |
| 5 | LowPath.Data pointer |
Response
| Index Word | Description |
|---|---|
| 0 | Header code |
| 1 | Resultcode |
| 2 | Archive handle lower word |
| 3 | Archive handle upper word |
Archive idcodes
| Idcode | Description |
|---|---|
| 0x00000003 | Application RomFS |
| 0x00000004 | SaveData |
| 0x00000006 | ExtSaveData |
| 0x00000007 | Shared ExtSaveData |
| 0x00000008 | SystemSaveData |
| 0x00000009 | SDMC |
| 0x0000000A | SDMC Write-Only (fs:USER only) |
| 0x12345678 | ExtSaveData for BOSS |
| 0x12345679 | ? |
| 0x1234567B | ? |
| 0x1234567C | ? |
| 0x1234567D | NAND RW |
| 0x1234567E | NAND RO |
| 0x1234567F | ? |
| 0x2345678A | ? |
| 0x2345678E | ? |
| 0x567890AB | ? |
| 0x567890AC | TWL PHOTO |
| 0x567890AD | ? |
| 0x567890AE | NAND TWL FS |
| 0x567890AF | ? |
| 0x567890B1 | Gamecard SaveData (for check) |
| 0x567890B2 | UserSaveData (for check) |
Archives 0x1234567F, 0x567890AE, 0x567890AF, and 0x12345679 require the corresponding application exheader access control mount flag to be set. The access rights checked by FS module for archive mounting with fs:USER, are stored in the process' exheader accessinfo.
Archive LowPath.Data format
Each archive has a separate LowPath format, some archives' LowPath are unused which are not listed here.
| Archive | LowPath.Data format |
|---|---|
| (Shared)ExtSaveData(BOSS) | +0 u8 mediatype, +4 u64 ExtdataID |
| SystemSaveData | +0 u8 mediatype, +4 u32 savedataid |
| UserSaveDataForCheck | +0 u8 mediatype, +4 u64 savedataid |
SystemSaveData mediatype must always be NAND. UserSaveDataForCheck mediatype must not be NAND.
Mediatypes
| Type | Description |
|---|---|
| 0 | NAND |
| 1 | SD |
| 2 | Gamecard |