Filesystem services
Filesystem service "fs:USER"
| Command Header | Available since system version | Description | Required exheader accessinfo bitmask |
|---|---|---|---|
| 0x000100C6 | Dummy1 | None | |
| 0x040100C4 | Control | None | |
| 0x08010002 | Initialize | None | |
| 0x080201C2 | OpenFile | None | |
| 0x08030204 | OpenFileDirectly | None | |
| 0x08040142 | DeleteFile | None | |
| 0x08050244 | RenameFile | None | |
| 0x08060142 | DeleteDirectory | None | |
| 0x08070142 | DeleteDirectoryRecursively | None | |
| 0x08080202 | CreateFile | None | |
| 0x08090182 | CreateDirectory | None | |
| 0x080A0244 | RenameDirectory | None | |
| 0x080B0102 | OpenDirectory | None | |
| 0x080C00C2 | OpenArchive | Each archive idcode has separate accessinfo bitmasks, if any. | |
| 0x080D0144 | ControlArchive | None | |
| 0x080E0080 | CloseArchive | None | |
| 0x080F0180 | FormatThisUserSaveData | None | |
| 0x08100200 | CreateSystemSaveData | 0x4, for when the input saveID doesn't match the exheader saveID. | |
| 0x08110040 | DeleteSystemSaveData | 0x1004, for when the input saveID doesn't match the exheader saveID. | |
| 0x08120080 | GetFreeBytes | None | |
| 0x08130000 | GetCardType | 0x1017 | |
| 0x08140000 | GetSdmcArchiveResource | None | |
| 0x08150000 | GetNandArchiveResource | None | |
| 0x08160000 | GetSdmcFatfsError | 0x2 | |
| 0x08170000 | IsSdmcDetected | None | |
| 0x08180000 | IsSdmcWritable | None | |
| 0x08190042 | GetSdmcCid | 0x2 | |
| 0x081A0042 | GetNandCid | 0x2 | |
| 0x081B0000 | GetSdmcSpeedInfo | 0x2 | |
| 0x081C0000 | GetNandSpeedInfo | 0x2 | |
| 0x081D0042 | GetSdmcLog | 0x2 | |
| 0x081E0042 | GetNandLog | 0x2 | |
| 0x081F0000 | ClearSdmcLog | 0x2 | |
| 0x08200000 | ClearNandLog | 0x2 | |
| 0x08210000 | CardSlotIsInserted | 0x1017 | |
| 0x08220000 | CardSlotPowerOn | 0x2 | |
| 0x08230000 | CardSlotPowerOff | 0x2 | |
| 0x08240000 | CardSlotGetCardIFPowerStatus | 0x2 | |
| 0x08250040 | CardNorDirectCommand | 0x2 | |
| 0x08260080 | CardNorDirectCommandWithAddress | 0x2 | |
| 0x08270082 | CardNorDirectRead | 0x2 | |
| 0x082800C2 | CardNorDirectReadWithAddress | 0x2 | |
| 0x08290082 | CardNorDirectWrite | 0x2 | |
| 0x082A00C2 | CardNorDirectWriteWithAddress | 0x2 | |
| 0x082B00C2 | CardNorDirectRead_4xIO | 0x2 | |
| 0x082C0082 | CardNorDirectCpuWriteWithoutVerify | 0x2 | |
| 0x082D0040 | CardNorDirectSectorEraseWithoutVerify | 0x2 | |
| 0x082E0040 | GetProductInfo | 0x1005 | |
| 0x082F0040 | GetProgramLaunchInfo | 0x1005 | |
| 0x08300182 | CreateExtSaveData | 0xC, for when the input extdataID doesn't match the exheader extdataID. | |
| 0x08310180 | CreateSharedExtSaveData | 0x1005 | |
| 0x08320102 | ReadExtSaveDataIcon | 0x100D, for when the input extdataID doesn't match the exheader extdataID. | |
| 0x08330082 | EnumerateExtSaveData | 0x1005 | |
| 0x08340082 | EnumerateSharedExtSaveData | 0x1005 | |
| 0x08350080 | DeleteExtSaveData | 0x100D, for when the input extdataID doesn't match the exheader extdataID. | |
| 0x08360080 | DeleteSharedExtSaveData | 0x1005 | |
| 0x08370040 | SetCardSpiBaudRate | 0x2 | |
| 0x08380040 | SetCardSpiBusMode | 0x2 | |
| 0x08390000 | SendInitializeInfoTo9 | None | |
| 0x083A0100 | GetSpecialContentIndex | 0x1005 | |
| 0x083B00C2 | GetLegacyRomHeader | 0x1015 | |
| 0x083C00C2 | GetLegacyBannerData | 0x1015 | |
| 0x083D0100 | CheckAuthorityToAccessExtSaveData | 0x44 | |
| 0x083E00C2 | QueryTotalQuotaSize | None | |
| 0x083F00C0 | GetExtDataBlockSize | None | |
| 0x08400040 | AbnegateAccessRight | ||
| 0x08410000 | DeleteSdmcRoot | 0x1005 | |
| 0x08420040 | DeleteAllExtSaveDataOnNand | 0x1005 | |
| 0x08430000 | InitializeCtrFileSystem | None | |
| 0x08440000 | CreateSeed | 0x2 | |
| 0x084500C2 | GetFormatInfo | ? | |
| 0x08460102 | GetLegacyRomHeader2 | 0x1015 | |
| 0x08470180 | FormatCtrCardUserSaveData | 0x6 | |
| 0x08480042 | GetSdmcCtrRootPath | 0x100D | |
| 0x08490040 | GetArchiveResource | ? | |
| 0x084A0002 | ExportIntegrityVerificationSeed | 0x4000 | |
| 0x084B0002 | ImportIntegrityVerificationSeed | 0x4000 | |
| 0x084C0242 | FormatSaveData | 0x6, in some cases this right isn't needed however. | |
| 0x084D0102 | GetLegacySubBannerData | 0x1015 | |
| 0x084E0342 | UpdateSha256Context | 0x5 | |
| 0x084F0102 | ReadSpecialFile | None | |
| 0x08500040 | GetSpecialFileSize | None | |
| 0x08510242 | 3.0.0-5 | ? | Shared extdata: 0x101005. Regular extdata in certain cases: 0xC. |
| 0x08520100 | 3.0.0-5 | Unknown (u32 flags, u64 extdataID) | Shared extdata: 0x101005. Regular extdata in certain cases: 0x10100D. |
| 0x08530142 | 3.0.0-5 | ? | 0x10100D(this doesn't apply in certain cases however) |
| 0x085400C0 | 3.0.0-5 | ? | 0x10100D(this doesn't apply in certain cases however) |
| 0x08550102 | 3.0.0-5 | ? | 0x101005 |
| 0x08560200 | 3.0.0-5 | ? | 0x4(this doesn't apply in certain cases however) |
| 0x08570080 | 3.0.0-5 | ? | 0x1004(this doesn't apply in certain cases however) |
| 0x08580000 | 3.0.0-5 | GetMovableSedHashedKeyYRandomData | 0x2004 |
| 0x08590200 | 3.0.0-5 | ? | 0x2004 |
| 0x085A00C0 | 3.0.0-5 | ? ?setOpenFlags?(u64 ID?,u32 unk) | None |
| 0x085B0040? | 3.0.0-5 | ?getOpenFlags?(u64 ID?,u32 *ret) | None |
| 0x085C00C0 | 3.0.0-5 | ? | 0xE |
| 0x085D0180 | 3.0.0-5 | ? | 0x100001 |
| 0x085E0040 | 3.0.0-5 | ? | 0xE |
| 0x085F0040 | 3.0.0-5 | ? | 0x12004 |
| 0x08600042 | 3.0.0-5 | ? | 0x2004 |
| 0x08610042 | 3.0.0-5 | InitializeWithSdkVersion | None |
| 0x08620040 | 3.0.0-5 | SetPriority | None |
| 0x08630000 | 3.0.0-5 | GetPriority | None |
| 0x08640000 | 3.0.0-5 | Stubbed, this returns an error. | None |
| 0x08650140 | 4.0.0-7 | Unknown, this is used with Anti Savegame Restore. | 0x121004(in certain cases this doesn't apply however) |
| 0x086600C0 | 4.0.0-7 | Unknown, this is used with Anti Savegame Restore. | 0x121004(in certain cases this doesn't apply however) |
| 0x086700C4 | 4.0.0-7 | ? | 0x121004 |
| 0x08680000 | 4.0.0-7 | This loads the u8 mediatype for the current application from already initialized state, this u8 was originally loaded from the same data used by GetProgramLaunchInfo. This then writes the u8 to response-word[2]. This is used with Anti Savegame Restore. | None |
| 0x08690000 | 4.0.0-7 | Stubbed, this returns an error. | None |
| 0x086A0082 | 4.0.0-7 | This is a wrapper for FSPXI command 0x00550082. | None |
| 0x086B00C2 | ? | ? | 00121004 |
| 0x086C00C2 | ? | ? | 00121004 |
| 0x086D0040 | ? | ? | 00020004 |
| 0x086E00C0 | ? | ? | ?None? |
| 0x086F0040 | ? | ? | 0xE |
| 0x087000C2 | ? | ? | ?None? |
| 0x08710100 | ? | ? | 0xC |
| 0x087201C0 | ? | ? | 00080004 |
| 0x087300C0 | ? | ? | 00080004 |
| 0x08740000 | ? | ? | 00080004 |
| 0x08750140 | ? | ? | ?None? |
| 0x087600C0 | ? | ? | ?None? |
| 0x08770100 | ? | ? | ? |
| 0x087800C0 | ? | ? | ? |
When access rights are required for a command, at least one of the bits in the process accessinfo specified in the above table for the command must be set. Error 0xD9004676 is returned when a process attempts to use a command which it doesn't have access rights for the command. The exheader accessinfo field is all-zero for most applications. Note that the permissions listed in the above table is for system-version v2.x, therefore permission bit(s) added with newer FIRM may be missing from this.
Each session for fs:USER has separate permissions, initially these are set to all-zero for new fs:USER sessions. The permissions/etc for fs:USER sessions are initialized via FS:Initialize(loaded from the user process exheader).
File service
| Command Header | Description |
|---|---|
| 0x000100C6 | Dummy1 |
| 0x040100C4 | Control |
| 0x08010100 | OpenSubFile |
| 0x080200C2 | Read |
| 0x08030102 | Write |
| 0x08040000 | GetSize |
| 0x08050080 | SetSize |
| 0x08060000 | GetAttributes |
| 0x08070040 | SetAttributes |
| 0x08080000 | Close |
| 0x08090000 | Flush |
Directory service
| Command Header | Description |
|---|---|
| 0x000100C6 | Dummy1 |
| 0x040100C4 | Control |
| 0x08010042 | Read |
| 0x08020000 | Close |
Filesystem service "fs:LDR"
This service is identical to fs:USER, except FS:OpenArchive archive 0x2345678E can only be accessed with fs:LDR.
ProgramRegistry service "fs:REG"
| Command Header | Description |
|---|---|
| 0x000100C6 | Dummy1 |
| 0x040103C0 | Register |
| 0x04020040 | Unregister |
| 0x040300C0 | GetProgramInfo |
| 0x04040100 | LoadProgram |
| 0x04050080 | UnloadProgram |
| 0x04060080 | CheckHostLoadId |