Filesystem services

From Nintendo Switch Brew
Jump to: navigation, search

Contents

fsp-ldr

This is "nn::fssrv::sf::IFileSystemProxyForLoader".

Cmd Name Arguments Notes
0 OpenCodeFileSystem u64 TitleId + X descriptor #ContentPath Returns an #IFileSystem.
1 IsArchivedProgram u64 ProcessId Returns a bool (1 if the process id's #ContentPath ends in ".nca").
2 [4.0.0+] SetCurrentProcess PID descriptor

fsp-pr

This is "nn::fssrv::sf::IProgramRegistry".

Cmd Name Notes
0 #RegisterProgram
1 #UnregisterProgram
2 [4.0.0+] SetCurrentProcess
256 #SetEnabledProgramVerification

RegisterProgram

Takes a storageID, a pid, a titleID, a 0x1C type-A buffer for the FS Access Header, and a 0x2C type-A buffer for the FS Access Control

Final FS permissions are stored as (ACI0_perms & ACID_perms). Will panic(svcBreak) when buffer sizes from ipc-rawdata are invalid.

UnregisterProgram

Takes a pid. Removes registered FS permissions for that PID.

SetEnabledProgramVerification

Seems to sets a global flag to inputval & 1.

When the flag is zero, it will set ret=0 instead of ret={error} when verifying the fixed-key NPDM ACID signature fails. This also skips verifying the NCA Header signature using the ACID key. Note that if verifying the fixed-key ACID signature is successful, and verifying the ACID-key NCA header signature fails, it will throw an error and abort.

fsp-srv

This is "nn::fssrv::sf::IFileSystemProxy".

Cmd Name
0 [1.0.0] #OpenFileSystem
1 #SetCurrentProcess
2 OpenDataFileSystemByCurrentProcess
7 [2.0.0+] #OpenFileSystemWithPatch
8 [2.0.0+] #OpenFileSystemWithId
9 [3.0.0+] OpenDataFileSystemByApplicationId
11 #OpenBisFileSystem
12 #OpenBisStorage
13 InvalidateBisCache
17 OpenHostFileSystem
18 OpenSdCardFileSystem
19 [2.0.0+] FormatSdCardFileSystem
21 #DeleteSaveDataFileSystem
22 #CreateSaveDataFileSystem
23 #CreateSaveDataFileSystemBySystemSaveDataId
24 RegisterSaveDataFileSystemAtomicDeletion
25 [2.0.0+] DeleteSaveDataFileSystemBySaveDataSpaceId
26 [2.0.0+] FormatSdCardDryRun
27 [2.0.0+] IsExFatSupported
28 [4.0.0+] DeleteSaveDataFileSystemBySaveDataAttribute
30 #OpenGameCardStorage
31 #OpenGameCardFileSystem
32 [3.0.0+] ExtendSaveDataFileSystem
33 [5.0.0+] DeleteCacheStorage
34 [5.0.0+] GetCacheStorageSize
35 [6.0.0+] CreateSaveDataFileSystemByHashSalt (Unofficial name, takes a total of 0xB0-bytes of input, no output)
51 #OpenSaveDataFileSystem
52 #OpenSaveDataFileSystemBySystemSaveDataId
53 [2.0.0+] OpenReadOnlySaveDataFileSystem
57 [3.0.0+] #ReadSaveDataFileSystemExtraDataBySaveDataSpaceId
58 #ReadSaveDataFileSystemExtraData
59 [2.0.0+] WriteSaveDataFileSystemExtraData
60 #OpenSaveDataInfoReader
61 #OpenSaveDataInfoReaderBySaveDataSpaceId
62 [5.0.0+] OpenCacheStorageList
64 [5.0.0+] OpenSaveDataInternalStorageFileSystem
65 [5.0.0+] UpdateSaveDataMacForDebug
66 [5.0.0+] WriteSaveDataFileSystemExtraData2
67 [6.0.0+] FindSaveDataWithFilter (Takes a total of 0x50-bytes of input, returns 8-bytes of output, and a type-0x6 output buffer)
68 [6.0.0+] OpenSaveDataInfoReaderBySaveDataFilter (Unofficial name, takes a total of 0x50-bytes of input, returns an #ISaveDataInfoReader)
80 OpenSaveDataMetaFile
81 [4.0.0+] OpenSaveDataTransferManager (No input, returns an #ISaveDataTransferManager)
82 [5.0.0+] OpenSaveDataTransferManagerVersion2 (No input, returns an #ISaveDataTransferManagerWithDivision)
83 [6.0.0+] OpenSaveDataTransferProhibiterForCloudBackUp (Takes an input u64, returns an #ISaveDataTransferProhibiter)
84 [6.0.0+] ListApplicationAccessibleSaveDataOwnerId (Takes a total of 0x10-bytes of input, returns 4-bytes of output, and a type-0x6 output buffer)
100 OpenImageDirectoryFileSystem
110 #OpenContentStorageFileSystem
120 [6.0.0+] OpenCloudBackupWorkStorageFileSystem (Takes 4-bytes of input, returns an #IFileSystem)
200 OpenDataStorageByCurrentProcess
201 [3.0.0+] OpenDataStorageByProgramId
202 #OpenDataStorageByDataId
203 OpenPatchDataStorageByCurrentProcess
400 #OpenDeviceOperator
500 #OpenSdCardDetectionEventNotifier
501 #OpenGameCardDetectionEventNotifier
510 [5.0.0+] OpenSystemDataUpdateEventNotifier
511 [5.0.0+] NotifySystemDataUpdateEvent
520 [6.0.0+] SimulateGameCardDetectionEvent (Takes a total of 0xC-bytes of input, no output)
600 [1.0.0-3.0.2] SetCurrentPosixTime
601 QuerySaveDataTotalSize
602 #VerifySaveDataFileSystem
603 CorruptSaveDataFileSystem
604 CreatePaddingFile
605 DeleteAllPaddingFiles
606 [2.0.0+] GetRightsId
607 [2.0.0+] RegisterExternalKey
608 [2.0.0+] UnregisterAllExternalKey
609 [2.0.0+] GetRightsIdByPath
610 [3.0.0+] GetRightsIdAndKeyGenerationByPath
611 [4.0.0+] SetCurrentPosixTimeWithTimeDifference
612 [4.0.0+] GetFreeSpaceSizeForSaveData
613 [4.0.0+] VerifySaveDataFileSystemBySaveDataSpaceId
614 [4.0.0+] CorruptSaveDataFileSystemBySaveDataSpaceId
615 [5.0.0+] QuerySaveDataInternalStorageTotalSize
616 [6.0.0+] #GetSaveDataCommitId
620 [2.0.0+] #SetSdCardEncryptionSeed
630 [4.0.0+] SetSdCardAccessibility
631 [4.0.0+] IsSdCardAccessible
640 [4.0.0+] IsSignedSystemPartitionOnSdCardValid
700 [5.0.0+] OpenAccessFailureResolver
701 [5.0.0+] GetAccessFailureDetectionEvent
702 [5.0.0+] IsAccessFailureDetected
710 [5.0.0+] ResolveAccessFailure
720 [5.0.0+] AbandonAccessFailure
800 [2.0.0+] GetAndClearFileSystemProxyErrorInfo
1000 SetBisRootForHost
1001 SetSaveDataSize
1002 SetSaveDataRootPath
1003 DisableAutoSaveDataCreation
1004 #SetGlobalAccessLogMode
1005 #GetGlobalAccessLogMode
1006 #OutputAccessLogToSdCard
1007 [4.0.0+] RegisterUpdatePartition
1008 [4.0.0+] OpenRegisteredUpdatePartition
1009 [4.0.0+] GetAndClearMemoryReportInfo
1010 [5.1.0+] SetDataStorageRedirectTarget
1100 [4.0.0+] OverrideSaveDataTransferTokenSignVerificationKey
1110 [6.0.0+] CorruptSaveDataFileSystemBySaveDataSpaceId2
1200 [6.0.0+] OpenMultiCommitManager (No input, returns an output #IMultiCommitManager)

Permissions

Every time permissions are checked, the process registration #fsp-pr is loaded using the session processID. The permission data is populated with data from the NPDM.

If the processID is <= 6 (which happens only for built-in sysmodules), it will use a hardcoded registration data. The default mask in this case is 0x8000000000000000.

Note that the functions check whether or not at least one bit is set in the mask. This means that, you don't need to set 0xFFFFFFFFFFFFFFFF to get all permissions: it suffices to set 0x8000000000000000.

If the code were to request an invalid input type, panic. But this never happens.

RwPermissions

Type(s) Mask Name Value Used by
0x0 0x8000000000000801 CanMountLogo 1 #OpenFileSystem, #OpenFileSystemWithPatch, #OpenFileSystemWithId
0x1 0x8000000000000801 CanMountContentMeta 1 #OpenFileSystem, #OpenFileSystemWithPatch, #OpenFileSystemWithId
0x2 0x8000000000000801 CanMountContentControl 1 #OpenFileSystem, #OpenFileSystemWithPatch, #OpenFileSystemWithId
0x3 0x8000000000000801 CanMountContentManual 1 #OpenFileSystem, #OpenFileSystemWithPatch, #OpenFileSystemWithId
0x4 0x8000000000000801 CanMountContentData 1 #OpenFileSystem, #OpenFileSystemWithPatch, #OpenFileSystemWithId
0x5 0x8000000000000801 CanMountApplicationPackage 1 #OpenFileSystem, #OpenFileSystemWithPatch, #OpenFileSystemWithId
0x6 0x8000000000000000 CanMountSaveDataStorage 3
0x7 0x8000000000000800 CanMountContentStorage 3 #OpenContentStorageFileSystem
0x8 0x8000000000001000 CanMountImageAndVideoStorage 3 #OpenImageDirectoryFileSystem
0x9 0x8000000200000000
([1.0.0-5.1.0] 0x8000000000000084)
CanMountCloudBackupWorkStorage 3 OpenCloudBackupWorkStorageFileSystem
0xA 0x8000000000000084
([1.0.0-5.1.0] 0x8000000000000080)
CanMountBisCalibrationFile 3 #OpenBisFileSystem
0xB 0x8000000000000080
([1.0.0-5.1.0] 0x8000000000008080)
CanMountBisSafeMode 3 #OpenBisFileSystem
0xC 0x8000000000008080 CanMountBisUser 3 #OpenBisFileSystem
0xD 0x8000000000008080
([1.0.0-5.1.0] 0x8000000000000080)
CanMountBisSystem 3 #OpenBisFileSystem
0xE 0x8000000000000080
([1.0.0-2.3.0] 0xC000000000200000)
CanMountBisSystemProperEncryption 3 #OpenBisFileSystem
0xF 0x8000000000000080
([3.0.0-5.1.0] 0xC000000000200000)
([1.0.0-2.3.0] 0x8000000000000010)
CanMountBisSystemProperPartition 3 #OpenBisFileSystem
0x10 0xC000000000200000
([3.0.0-5.1.0] 0x8000000000000010)
([1.0.0-2.3.0] 0x8000000000040020)
CanMountSdCard 3 #OpenSdCardFileSystem
0x11 0x8000000000000010
([3.0.0-5.1.0] 0x8000000000040020)
([1.0.0-2.3.0] 0x8000000000000028)
CanMountGameCard 3 #OpenGameCardFileSystem
0x12 0x8000000000040020
([3.0.0-5.1.0] 0x8000000000000028)
([1.0.0-2.3.0] 0x8000000000000020)
CanMountDeviceSaveData 3 #OpenSaveDataFileSystem
0x13 0x8000000000000028
([1.0.0-5.1.0] 0x8000000000000020)
CanMountSystemSaveData 3 #OpenSaveDataFileSystemBySystemSaveDataId
0x14 0x8000000000000020
([1.0.0-2.3.0] 0x8000000000010082)
CanMountOthersSaveData 3 #OpenSaveDataFileSystem
0x15 0x8000000000000020
([3.0.0-5.1.0] 0x8000000000010082)
([1.0.0-2.3.0] 0x8000000000010080)
CanMountOthersSystemSaveData 3 #OpenSaveDataFileSystemBySystemSaveDataId
0x16 0x8000000000010082
([1.0.0-5.1.0] 0x8000000000010080)
CanOpenBisPartitionBootPartition1Root 3 #OpenBisStorage
0x17 0x8000000000010080
([3.0.0-5.1.0] 0x8000000000000080)
([1.0.0-2.3.0] 0x8000000000010080)
CanOpenBisPartitionBootPartition2Root 3 #OpenBisStorage
0x18 0x8000000000000080
([1.0.0-5.1.0] 0x8000000000010080)
CanOpenBisPartitionUserDataRoot 3 #OpenBisStorage
0x19 0x8000000000010080 CanOpenBisPartitionBootConfigAndPackage2Part1 3 #OpenBisStorage
0x1A 0x8000000000010080 CanOpenBisPartitionBootConfigAndPackage2Part2 3 #OpenBisStorage
0x1B 0x8000000000010080 CanOpenBisPartitionBootConfigAndPackage2Part3 3 #OpenBisStorage
0x1C 0x8000000000010080 CanOpenBisPartitionBootConfigAndPackage2Part4 3 #OpenBisStorage
0x1D 0x8000000000010080
([1.0.0-2.3.0] 0x8000000000000084)
CanOpenBisPartitionBootConfigAndPackage2Part5 3 #OpenBisStorage
0x1E 0x8000000000010080
([1.0.0-5.1.0] 0x8000000000000084)
CanOpenBisPartitionBootConfigAndPackage2Part6 3 #OpenBisStorage
0x1F 0x8000000000000084
([1.0.0-2.3.0] 0x8000000000000080)
CanOpenBisPartitionCalibrationBinary 3 #OpenBisStorage
0x20 0x8000000000000084
([1.0.0-5.1.0] 0x8000000000000080)
CanOpenBisPartitionCalibrationFile 3 #OpenBisStorage
0x21 0x8000000000000080 CanOpenBisPartitionSafeMode 3 #OpenBisStorage
0x22 0x8000000000000080 CanOpenBisPartitionUser 3 #OpenBisStorage
0x23 0x8000000000000080
([1.0.0-2.3.0] 0xC000000000200000)
CanOpenBisPartitionSystem 3 #OpenBisStorage
0x24 0x8000000000000080
([1.0.0-2.3.0] 0x8000000000000100)
CanOpenBisPartitionSystemProperEncryption 3 #OpenBisStorage
0x25 0x8000000000000080
([3.0.0-5.1.0] 0xC000000000200000)
([1.0.0-2.3.0] 0x8000000000100008)
CanOpenBisPartitionSystemProperPartition 3 #OpenBisStorage
0x26 0xC000000000200000
([3.0.0-5.1.0] 0x8000000000000100)
([1.0.0-2.3.0] 0xC000000000400000)
CanOpenSdCardStorage
[3.0.0+] 0x27 0x8000000000000100
([1.0.0-5.1.0] 0x8000000000100008)
CanOpenGameCardStorage 3 #OpenGameCardStorage, #EraseGameCard (bit1), #WriteToGameCard (bit1), #GetGameCardErrorInfo (bit1), #EraseAndWriteParamDirectly (bit1), #ReadParamDirectly (bit1), #ForceEraseGameCard (bit1)
[3.0.0+] 0x28 0x8000000000100008
([1.0.0-5.1.0] 0xC000000000400000)
CanMountSystemDataPrivate 1 #OpenFileSystem, #OpenDataStorageByDataId
[4.0.0+] 0x29 0xC000000000400000
([1.0.0-5.1.0] 0x8000000000010000)
CanMountHost 3 #OpenHostFileSystem
[5.0.0+] 0x2A 0x8000000000010000
([1.0.0-5.1.0] 0x8000000000000000)
CanMountRegisteredUpdatePartition 1 #OpenRegisteredUpdatePartition
[6.0.0+] 0x2B 0x8000000000000000 CanOpenSaveDataInternalStorage 3 #OpenSaveDataInternalStorageFileSystem

BoolPermissions

Type(s) Mask Name Used by
0x0 0x8000000000000080 CanInvalidateBisCache #InvalidateBisCache
0x1 0x8000000000000080 CanEraseMmc #EraseMmc
0x2 0x8000000000000010 CanGetGameCardDeviceCertificate #GetGameCardDeviceCertificate
0x3 0x8000000000000010 CanGetGameCardIdSet #GetGameCardIdSet
0x4 0x8000000000000200 CanFinalizeGameCardDriver #FinalizeGameCardDriver
0x5 0x8000000000000200 CanGetGameCardAsicInfo #GetGameCardAsicInfo
0x6 0x8000000000002020 CanCreateSaveData #CreateSaveDataFileSystem
0x7 0x8000000000000060 CanDeleteSaveData #DeleteSaveDataFileSystem, #RegisterSaveDataFileSystemAtomicDeletion
0x8 0x8000000000000028 CanCreateSystemSaveData #CreateSaveDataFileSystemBySystemSaveDataId
0x9 0x8000000000000020 CanCreateOthersSystemSaveData #CreateSaveDataFileSystemBySystemSaveDataId
0xA 0x8000000000004028 CanDeleteSystemSaveData #DeleteSaveDataFileSystem, #RegisterSaveDataFileSystemAtomicDeletion
0xB 0x8000000000000060 CanOpenSaveDataInfoReader #OpenSaveDataInfoReaderBySaveDataSpaceId, #OpenSaveDataInfoReader
0xC 0x8000000000004020 CanOpenSaveDataInfoReaderForSystem #OpenSaveDataInfoReaderBySaveDataSpaceId, #OpenSaveDataInfoReader
0xD 0x8000000000000040
([1.0.0-5.1.0] 0x8000000000020000)
OpenSaveDataInfoReaderBySaveDataFilter
0xE 0x8000000000020000
([1.0.0-5.1.0] 0x8000000000000400)
CanOpenSaveDataMetaFile #OpenSaveDataMetaFile
0xF 0x8000000000000400
([1.0.0-5.1.0] 0x8000000000004060)
CanSetCurrentPosixTime #SetCurrentPosixTime, #SetCurrentPosixTimeWithTimeDifference
0x10 0x8000000000004060
([1.0.0-5.1.0] 0x8000000000080000)
CanReadSaveDataFileSystemExtraData #ReadSaveDataFileSystemExtraData
0x11 0x8000000000080000 CanSetGlobalAccessLogMode #SetGlobalAccessMode
0x12 0x8000000000080000
([1.0.0-5.1.0] Invalid)
CanSetSpeedEmulationMode #SetSpeedEmulationMode
0x13 Invalid
([1.0.0-5.1.0] 0xC000000000800000)
0x14 0xC000000000800000
([1.0.0-5.1.0] 0xC000000001000000)
CanFillBis #CreatePaddingFile, #DeleteAllPaddingFiles
0x15 0xC000000001000000
([5.0.0-5.1.0] 0x8000000001000060)
([1.0.0-4.1.0] 0xC000000002000000)
CanCorruptSaveData #CorruptSaveDataFileSystem, #CorruptSaveDataFileSystemBySaveDataSpaceId
[2.0.0+] 0x16 0x8000000001000060
([5.0.0-5.1.0] 0x8000000000000060)
([1.0.0-4.1.0] 0x8000000004000000)
CanCorruptSystemSaveData #CorruptSaveDataFileSystem, #CorruptSaveDataFileSystemBySaveDataSpaceId
[2.0.0+] 0x17 0x8000000000000060
([5.0.0-5.1.0] 0xC000000002000000)
([1.0.0-4.1.0] 0x8000000008000000)
CanVerifySaveData #VerifySaveDataFileSystem, #VerifySaveDataFileSystemBySaveDataSpaceId
[2.0.0+] 0x18 0xC000000002000000
([5.0.0-5.1.0] 0x8000000004000000)
([1.0.0-4.1.0] 0x8000000010000000)
CanDebugSaveData #CreateSaveDataFileSystem, #OpenSaveDataFileSystem, #SetSaveDataRootPath
[2.0.0+] 0x19 0x8000000004000000
([5.0.0-5.1.0] 0x8000000008000000)
([1.0.0-4.1.0] 0x8000000000000800)
CanFormatSdCard #FormatSdCardFileSystem
[2.0.0+] 0x1A 0x8000000008000000
([5.0.0-5.1.0] 0x8000000010000000)
([1.0.0-4.1.0] 0x8000000000004020)
CanGetRightsId #GetRightsId, #GetRightsIdAndKeyGenerationByPath, #GetRightsIdByPath
[3.0.0+] 0x1B 0x8000000010000000
([5.0.0-5.1.0] 0x8000000000000800)
([1.0.0-4.1.0] 0x8000000000002020)
CanRegisterExternalKey #RegisterExternalKey, #UnregisterAllExternalKey
[3.0.0+] 0x1C 0x8000000000000800
([5.0.0-5.1.0] 0x8000000000004020)
([1.0.0-4.1.0] 0x8000000000000028)
CanSetEncryptionSeed #SetSdCardEncryptionSeed
[4.0.0+] 0x1D 0x8000000000000020
([5.0.0-5.1.0] 0x8000000000000000)
([1.0.0-4.1.0] 0x8000000020000000)
SaveDataExtraData_Write0 #WriteSaveDataFileSystemExtraData, #WriteSaveDataFileSystemExtraData2
[4.0.0+] 0x1E 0x8000000000004020
([5.0.0-5.1.0] 0x8000000000002020)
([1.0.0-4.1.0] 0x8000000040000000)
CanWriteSaveDataFileSystemExtraDataFlags #WriteSaveDataFileSystemExtraData, #WriteSaveDataFileSystemExtraData2
[4.0.0+] 0x1F 0x8000000000000020
([5.0.0-5.1.0] 0x8000000000000028)
([1.0.0-4.1.0] 0x8000000000000000)
SaveDataExtraData_Write1 #WriteSaveDataFileSystemExtraData, #WriteSaveDataFileSystemExtraData2
[4.0.0+] 0x20 0x8000000000000000
([5.0.0-5.1.0] 0x8000000020000000)
([1.0.0-4.1.0] 0x8000000000000000)
CanWriteSaveDataFileSystemExtraDataAll #WriteSaveDataFileSystemExtraData, #WriteSaveDataFileSystemExtraData2
[5.0.0+] 0x21 0x8000000000002020
([1.0.0-5.1.0] 0x8000000040000000)
CanExtendSaveData #ExtendSaveDataFileSystem
[5.0.0+] 0x22 0x8000000000000028
([1.0.0-5.1.0] 0x0000000080000002)
CanExtendSystemSaveData #ExtendSaveDataFileSystem
[5.0.0+] 0x23 0x8000000020000000
([1.0.0-5.1.0] 0x8000000000000000)
CanRegisterUpdatePartition #RegisterUpdatePartition
[5.0.0+] 0x24 0x8000000040000000
([1.0.0-5.1.0] 0x8000000000000000)
CanOpenSaveDataTransferManager #OpenSaveDataTransferManager
[5.0.0+] 0x25 0x8000000200000000
([1.0.0-5.1.0] 0x8000000080200000)
CanOpenSaveDataTransferManagerVersion2 #OpenSaveDataTransferManagerVersion2
[5.0.0+] 0x26 0x8000000200002000
([1.0.0-5.1.0] 0x8000000080000110)
CanOpenSaveDataTransferProhibiterForCloudBackUp #OpenSaveDataTransferProhibiterForCloudBackUp
[5.0.0+] 0x27 0x8000000200002000
([1.0.0-5.1.0] 0x8000000000100008)
CanListApplicationAccessibleSaveDataOwnerId ListApplicationAccessibleSaveDataOwnerId
[5.0.0+] 0x28 0x8000000000000000
([1.0.0-5.1.0] 0x8000000080010000)
CanControlMmcPatrol #SuspendMmcPatrol, #ResumeMmcPatrol
[5.0.0+] 0x29 0x8000000000000000
([1.0.0-5.1.0] 0x0000000080000001)
CanOverrideSaveDataTransferTokenSignVerificationKey #OverrideSaveDataTransferTokenSignVerificationKey
[5.0.0+] 0x2A 0x8000000080200000
([1.0.0-5.1.0] 0x0000000080000001)
CanOpenSdCardDetectionEventNotifier #OpenSdCardDetectionEventNotifier
[5.0.0+] 0x2B 0x8000000080000110
([1.0.0-5.1.0] 0x0000000080000001)
CanOpenGameCardDetectionEventNotifier #OpenGameCardDetectionEventNotifier
[5.0.0+] 0x2C 0x8000000000100008
([1.0.0-5.1.0] 0x0000000080000001)
CanOpenSystemDataUpdateEventNotifier #OpenSystemDataUpdateEventNotifier
[5.0.0+] 0x2D 0x8000000000010000
([1.0.0-5.1.0] 0x0000000080000001)
CanNotifySystemDataUpdateEvent #NotifySystemDataUpdateEvent
[5.0.0+] 0x2E 0x8000000100000000
([1.0.0-5.1.0] 0x8000000040000000)
CanOpenAccessFailureDetectionEventNotifier #OpenAccessFailureResolver
[5.0.0+] 0x2F 0x8000000100000000
([1.0.0-5.1.0] 0x8000000080200000)
CanGetAccessFailureDetectionEvent #GetAccessFailureDetectionEvent
[5.1.0+] 0x30 0x8000000100000000
([1.0.0-5.1.0] 0x8000000080080000)
CanIsAccessFailureDetected #IsAccessFailureDetected
[6.0.0+] 0x31 0x8000000100000000 CanResolveAccessFailure #ResolveAccessFailure
[6.0.0+] 0x32 0x8000000100000000 CanAbandonAccessFailure #AbandonAccessFailure
[6.0.0+] 0x33 0x8000000040000000 CanQuerySaveDataInternalStorageTotalSize #QuerySaveDataInternalStorageTotalSize
[6.0.0+] 0x34 0x8000000200000020 CanGetSaveDataCommitId #GetSaveDataCommitId
[6.0.0+] 0x35 0x8000000000200000 CanSetSdCardAccessibility #SetSdCardAccessibility
[6.0.0+] 0x36 0x4000000000000000 SimulateGameCardDetectionEvent, SetGameCardSimulationEvent, ClearGameCardSimulationEvent
[6.0.0+] 0x37 0x8000000000080000 CanSetDataStorageRedirectTarget SetDataStorageRedirectTarget
[6.0.0+] 0x38 0x8000000000000000 #CreateSaveDataFileSystem, CreateSaveDataFileSystemByHashSalt

OpenFileSystem

Takes a type-0x19 input buffer (ContentPath) and a #FileSystemType as parameters. Returns an #IFileSystem.

[2.0.0+] This function was removed.

SetCurrentProcess

Takes a pid-descriptor.

OpenFileSystemWithPatch

Takes an input #FileSystemType and an u64 title-id. Returns an #IFileSystem.

Web-applet loads the #FileSystemType (which must be ContentManual) from u32_table[inparam].

Note: web-applet strings refer to both this cmd and #OpenFileSystemWithId as "MountContent", but official nn_sf_sync symbols use "OpenXX" names.

OpenFileSystemWithId

Takes a type-0x19 input buffer, an #FileSystemType and an u64 title-id. Returns an #IFileSystem.

The #IFileSystem must be ContentMeta if the NCA type is 0 (control).

The input buffer is the output string path from GetApplicationContentPath.

May return errors when attempting to access NCA-paths for an update-title with a gamecard, when the gamecard isn't inserted. May return error 0x7D402 in some cases with update-titles. Non-val2 in32 values with NCA-type1 are unusable, even for normal titles.

The official "MountApplicationPackage" func uses this with in64=0 and #FileSystemType ApplicationPackage.

After the #FileSystemType specific permissions are checked, it then gets the func retval for permissions-type 0x25 and func0.

When #FileSystemType is ContentMeta, it uses in64=0xffffffffffffffff internally, otherwise it checks if in64 is set to 0xffffffffffffffff then throws an error if so. When the in64 used internally is not 0xffffffffffffffff, it's compared with the NCA titleID, then an error is thrown on mismatch.

OpenBisFileSystem

Takes a type-0x19 input buffer string and a u32 Bis partitionID. Official user-process code sets instr[0] = 0 normally. Returns an #IFileSystem.

Only partitionIDs for FAT partitions are usable with this, otherwise error 0x2EE202 is returned. Seems to be about the same as #OpenBisStorage except this mounts the partition filesystem instead of allowing direct access to the partition sectors.

OpenBisStorage

Takes a u32 partition ID, returns 0x2EE202 for partitions which do not exist, 0x320002 for partitions which cannot be opened and a valid #IStorage handle otherwise.

InvalidateBisCache

Seems to invalidate the Bis cache for MBR/GPT after overwriting that data via the OpenBisStorage IStorage. Used by SystemInitializer.

DeleteSaveDataFileSystem

Takes an input u64.

CreateSaveDataFileSystem

Takes a 0x40-byte Save-struct entry, a 0x40-byte SaveCreate-struct entry, and a 0x10-byte input struct.

Only the first 0x5-bytes in the 0x10-byte struct are initialized: all-zero when automatically creating savedata during savecommon mount by official user-processes. In the dedicated save-creation code in official user-processes: +0 u32 = 0x40060, +4 u8 = 1.

Creates regular savedata.

CreateSaveDataFileSystemBySystemSaveDataId

Takes a 0x40-byte Save-struct entry and a 0x40-byte SaveCreate-struct entry.

Creates savedata in the SYSTEM NAND partition.

OpenGameCardStorage

Takes two input u32s (gamecard handle, partition ID), and returns an #IStorage for the partition.

OpenGameCardFileSystem

Takes two input u32s, with the second u32 located at +4 in rawdata after the first u32. Returns an #IFileSystem.

Mounts a gamecard partition.

OpenSaveDataFileSystem

Takes an input u8 #SaveDataSpaceId and a 0x40-byte Save-struct entry. Official user-process code is only known to use value 1 for the u8.

Returns an #IFileSystem.

Permissions aren't checked until the specified save is successfully found.

Only one process (specifically only one #IFileSystem session) can mount a given savedata at any given time (this includes SystemSaveData).

OpenSaveDataFileSystemBySystemSaveDataId

Takes an input u8 #SaveDataSpaceId and a 0x40-byte Save-struct entry. Web-applet only uses value0 for the input u8.

Returns an #IFileSystem.

Mounts savedata in the SYSTEM NAND partition.

ReadSaveDataFileSystemExtraDataBySaveDataSpaceId

Takes an input u8 #SaveDataSpaceId, an input u64 saveID, and a type-0x6 output buffer containing the #SaveDataFileSystemExtraData.

ReadSaveDataFileSystemExtraData

Takes an input u64 saveID and a type-0x6 output buffer containing the #SaveDataFileSystemExtraData.

OpenSaveDataInfoReader

No input, returns an output #ISaveDataInfoReader.

OpenSaveDataInfoReaderBySaveDataSpaceId

Takes an input u8 #SaveDataSpaceId, returns an output #ISaveDataInfoReader.

OpenContentStorageFileSystem

Takes a #ContentStorageId. Invalid values return 0x2EE202.

Returns an #IFileSystem with NCA files. The read data from these files is identical to the data read by NCM_services#ReadContentIdFile.

OpenDataStorageByDataId

Takes a #StorageId and a TitleID.

Returns a domain object ID implementing the #IStorage interface for data archives.

OpenDeviceOperator

This command returns a session to a port implementing the #IDeviceOperator interface.

OpenSdCardDetectionEventNotifier

This command returns a session to a port implementing the #IEventNotifier interface.

OpenGameCardDetectionEventNotifier

This command returns a session to a port implementing the #IEventNotifier interface.

VerifySaveDataFileSystem

Takes an unknown input u64 and a type-0x6 output buffer.

The input u64 high-byte must be non-zero, otherwise an error is returned(0xE02).

GetSaveDataCommitId

Takes an input u8 and u64, returns an output u64.

SetSdCardEncryptionSeed

Takes in the 0x10 byte SD card encryption seed, and loads it into FS-module state.

NS-module reads the 0x10 bytes from SdCard:/Nintendo/Contents/private, and compares them to the first 0x10 bytes of the ns_appman:/private (in system savedata 0x8000000000000043). If they match, NS calls this command using bytes 0x10-0x20 from ns_appman:/private. The rest of this file (0x1F0 bytes total) is (usually/always?) all-zero.

SetGlobalAccessLogMode

Takes an input u32.

GetGlobalAccessLogMode

Returns an output u32.

GlobalAccessLogMode is normally 0.

OutputAccessLogToSdCard

Takes a type-0x5 input buffer.

The input buffer is the string to output to the log. User-processes normally include a newline at the end.

User-processes only use this when the value previously loaded from #GetGlobalAccessLogMode has bit1 set.

When bit1 in GlobalAccessLogMode is clear, FS-module will just return 0 for OutputAccessLogToSdCard. However even with that set the log doesn't show up SD, unknown why.

The input buffer is written to the "$FsAccessLog:/FsAccessLog.txt" file, where "$FsAccessLog" is the SD-card mount-name. It's written to the current end of the file(appended).

IStorage

This is "nn::fssrv::sf::IStorage".

This is the interface for a raw device, usually a block device.

Cmd Name Arguments
0 Read Takes a type-0x46 buffer, an offset and length
1 Write Takes a type-0x45 buffer, an offset and length
2 Flush None
3 SetSize Takes a size
4 GetSize None
5 [4.0.0+] OperateRange

IFileSystem

This is "nn::fssrv::sf::IFileSystem".

There are two main implementations of this interface:

  • RomFS: Filesystem implementation statically linked in the binary. Uses an #IStorage interface as underlying raw device.
  • IPC proxy: Used for all non-RomFS filesystems. In this case, actual filesystem implementation is in the FS process.
Cmd Name
0 CreateFile
1 DeleteFile
2 CreateDirectory
3 DeleteDirectory
4 DeleteDirectoryRecursively
5 RenameFile
6 RenameDirectory
7 #GetEntryType
8 #OpenFile
9 #OpenDirectory
10 #Commit
11 #GetFreeSpaceSize
12 #GetTotalSpaceSize
13 [3.0.0+] #CleanDirectoryRecursively
14 [3.0.0+] #GetFileTimeStampRaw
15 [4.0.0+] QueryEntry

GetEntryType

Takes a type-0x9 input buffer for the path and returns #DirectoryEntryType as an output u32.

OpenFile

Takes a type-0x19 input buffer for the path, and an u32 mode. mode controls how the file is opened, based on which bits are set:

  • When bit 0 is set, the file is Readable: you can use the Read operation.
  • When bit 1 is set, the file is Writable: you can use the Write operation.
  • When bit 2 is set, the file is Appendable: unless this bit is set, you will not be able to write beyond the end of a file (such writes will result in an error 0x307202)

OpenDirectory

Takes a type-0x9 input buffer for the path and an u64 filter_flags. filter_flags controls what type of entries are read by the #IDirectory: bitmask 0x1 = directories, bitmask 0x2 = files.

Commit

Like 3DS, this has to be used after writing to savedata for the changes to take affect.

GetFreeSpaceSize

Takes a type-0x9 input buffer for the path and returns an output byte-size u64 for the total free space with this FS.

GetTotalSpaceSize

Takes a type-0x9 input buffer for the path and returns an output byte-size u64 for the total space available with this FS(free+used).

CleanDirectoryRecursively

Takes a type-0x9 input buffer for the path and clears the contents of the directory specified in the path.

GetFileTimeStampRaw

Takes a type-0x19 input buffer for the path and returns a 0x20-byte struct. This contains 3 u64s and an u8.

IDirectory

This is "nn::fssrv::sf::IDirectory".

Cmd Name
0 #Read
1 #GetEntryCount

Read

Takes a type-0x6 output buffer. Returns an output u64(?) for the total number of read entries, this is 0 when no more entries are available.

The output buffer contains the read array of #DirectoryEntry. This doesn't include entries for "." and "..".

GetEntryCount

Returns an u64 for the total number of readable entries.

DirectoryEntry

Offset Size Description
0x0 0x301 Path
0x301 0x3 ?
0x304 0x1 #DirectoryEntryType
0x305 0x3 Padding?
0x308 0x8 Filesize, 0 for directories.

DirectoryEntryType

An s8 value indicating a directory entry type. The current values are:

Value Description
0 Directory
1 File

IFile

This is "nn::fssrv::sf::IFile".

Cmd Name
0 Read
1 Write
2 Flush
3 SetSize
4 GetSize
5 [4.0.0+] OperateRange

ISaveDataInfoReader

This is "nn::fssrv::sf::ISaveDataInfoReader".

Cmd Name
0 #ReadSaveDataInfo

ReadSaveDataInfo

Takes a type-0x6 output buffer. Returns an output u64 for total output entries. This buffer contains an array of #SaveDataInfo.

This is used to get #SaveDataInfo for all savedata on the system (or all savedata for the current #SaveDataSpaceId). When used multiple times, it will resume reading where it left off, until no more entries are available (in that case the out u64 is value 0).

IDeviceOperator

This is "nn::fssrv::sf::IDeviceOperator".

Cmd Name
0 IsSdCardInserted
1 GetSdCardSpeedMode
2 [2.0.0+] GetSdCardCid
3 [2.0.0+] GetSdCardUserAreaSize
4 [2.0.0+] GetSdCardProtectedAreaSize
5 [2.0.0+] GetAndClearSdCardErrorInfo
100 GetMmcCid
101 GetMmcSpeedMode
110 EraseMmc
111 GetMmcPartitionSize
112 [2.0.0+] GetMmcPatrolCount
113 [2.0.0+] GetAndClearMmcErrorInfo
114 [2.0.0+] GetMmcExtendedCsd
115 [4.0.0+] SuspendMmcPatrol
116 [4.0.0+] ResumeMmcPatrol
200 IsGameCardInserted
201 EraseGameCard
202 GetGameCardHandle
203 #GetGameCardUpdatePartitionInfo
204 FinalizeGameCardDriver
205 GetGameCardAttribute
206 GetGameCardDeviceCertificate
207 GetGameCardAsicInfo
208 GetGameCardIdSet
209 WriteToGameCard
210 SetVerifyWriteEnalbleFlag
211 GetGameCardImageHash
212 [2.0.0+] GetGameCardDeviceIdForProdCard
213 [2.0.0+] EraseAndWriteParamDirectly
214 [2.0.0+] ReadParamDirectly
215 [2.0.0+] ForceEraseGameCard
216 [2.0.0+] GetGameCardErrorInfo
217 [2.1.0+] GetGameCardErrorReportInfo
218 [3.0.0+] GetGameCardDeviceId
300 SetSpeedEmulationMode
301 GetSpeedEmulationMode
400 [5.0.0+] SuspendSdmmcControl
401 [5.0.0+] ResumeSdmmcControl
402 [6.0.0+] GetSdmmcConnectionStatus (Takes a total of 4-bytes of input, returns a total of 8-bytes of output)
500 [6.0.0+] SetGameCardSimulationEvent (Takes a total of 0x14-bytes of input, no output)
501 [6.0.0+] ClearGameCardSimulationEvent (Takes a total of 4-bytes of input, no output)

GetGameCardUpdatePartitionInfo

Returns a titleID and the title-version for it.

  • Output u32 with ARMS-gamecard: title-version v131162. This is the title-version for 2.1.0, which is the sysupdate included with this gamecard. Launch-day gamecards return title-version v450.
  • Output u64 with ARMS-gamecard: titleID 0100000000000816.

NS appears to only use this with Content_Manager_services#GetTitleIdInfo and Content_Manager_services#GetUpdateTitleList with storageid=nandsys, for checking whether a sysupdate is required.

IEventNotifier

This is "nn::fssrv::sf::IEventNotifier".

Cmd Name
0 GetEventHandle

ISaveDataTransferManager

Cmd Name
0 #GetChallenge
16 #SetToken
32 #OpenSaveDataExporter
64 #OpenSaveDataImporter

This was added with 4.0.0.

GetChallenge

No input/output, takes a type-0x6 output buffer.

SetToken

No input/output, takes a type-0x5 input buffer.

OpenSaveDataExporter

Takes an input u8 #SaveDataSpaceId and u64, returns an #ISaveDataExporter.

OpenSaveDataImporter

Takes an input u8 #SaveDataSpaceId and a 0x10-byte userID, and a type-0x5 input buffer. Returns an output u64 and an #ISaveDataImporter.

ISaveDataExporter

Cmd Name
0 #Initialize
1 #GetRestSize
16 #Pull
17 #PullInitialData

This was added with 4.0.0.

Initialize

No input/output, takes a type-0x1A #SaveDataInfo output buffer.

The actual name for this is the SaveDataExporter constructor. This is used automatically after #OpenSaveDataExporter by official sw.

GetRestSize

No input, returns an output u64.

Pull

Takes a type-0x6 output buffer, returns an output u64.

PullInitialData

No input/output, takes a type-0x6 output buffer.

ISaveDataImporter

Cmd Name
0 #Initialize
1 #GetRestSize
16 #Push
17 #Finalize

This was added with 4.0.0.

Initialize

No input/output, takes a type-0x1A #SaveDataInfo output buffer.

The actual name for this is the SaveDataImporter constructor. This is used automatically after #OpenSaveDataImporter by official sw.

GetRestSize

No input, returns an output u64.

Push

No input/output, takes a type-0x5 input buffer.

Finalize

No input/output.

ISaveDataTransferManagerWithDivision

Cmd Name
0 #GetChallenge
16 #SetKeySeedPackage
32 #OpenSaveDataFullExporter
33 #OpenSaveDataDiffExporter
34 [6.0.0+] #OpenSaveDataExporterByContext
64 #OpenSaveDataFullImporter
65 #OpenSaveDataDiffImporter
66 [6.0.0+] #OpenSaveDataDuplicateDiffImporter
67 [6.0.0+] #OpenSaveDataImporter
68 [6.0.0+] #OpenSaveDataImporterByContext
69 [6.0.0+] #CancelSuspendingImport

This was added with 5.0.0.

GetChallenge

No input/output, takes a type-0x6 output buffer containing the Challenge.

SetKeySeedPackage

No input/output, takes a type-0x5 input buffer containing the KeySeedPackage.

OpenSaveDataFullExporter

Takes an input u8 #SaveDataSpaceId and u64. Returns an #ISaveDataDivisionExporter.

OpenSaveDataDiffExporter

Takes an input u8 #SaveDataSpaceId, an u64, and a type-0x5 input buffer #InitialDataVersion2. Returns an #ISaveDataDivisionExporter.

OpenSaveDataExporterByContext

No input/output, takes a type-0x5 input buffer, returns an #ISaveDataDivisionExporter.

OpenSaveDataFullImporter

Takes an input u8 #SaveDataSpaceId, a 0x10-byte userID, and a type-0x5 input buffer #InitialDataVersion2. Returns an #ISaveDataDivisionImporter.

OpenSaveDataDiffImporter

Takes an input u8 #SaveDataSpaceId, an u64, and a type-0x5 input buffer #InitialDataVersion2, returns an #ISaveDataDivisionImporter.

OpenSaveDataDuplicateDiffImporter

Takes an input u8 and an u64, and a type-0x5 input buffer, returns an #ISaveDataDivisionImporter.

OpenSaveDataImporter

Takes an input u8, an u8(bool), a 0x10-byte struct, and a type-0x5 input buffer, returns an #ISaveDataDivisionImporter.

OpenSaveDataImporterByContext

No input/output, takes a type-0x5 input buffer, returns an #ISaveDataDivisionImporter.

CancelSuspendingImport

Takes an input u64 and a 0x10-byte struct, no output.

ISaveDataDivisionExporter

Cmd Name
0 SetDivisionCount (Takes an input u32, no output)
1 [6.0.0+] GetSaveDataInfo (No input/output, takes a type-0x6 output buffer)
16 OpenSaveDataDiffChunkIterator (No input, returns an #ISaveDataChunkIterator)
48 OpenSaveDataChunkExporter (Takes an input u32, returns an #ISaveDataChunkExporter)
64 [6.0.0+] FinalizeFullExport (No input, returns two 0x10-byte output structs)
65 [6.0.0+] FinalizeDiffExport (No input, returns an output 0x10-byte struct)
66 [6.0.0+] CancelExport (No input/output)
67 [6.0.0+] SuspendExport (No input/output, takes a type-0x6 output buffer)
70 [6.0.0+] GetKeySeed (No input, returns an output 0x10-byte struct)
71 [6.0.0+] GetInitialDataMac (No input, returns an output 0x10-byte struct)
72 [6.0.0+] FinalizeExport (No input/output)
80 [6.0.0+] GetImportInitialDataAad (No input, returns an output 0x20-byte struct)
81 [6.0.0+] SetExportInitialDataAad (Takes an input 0x20-byte struct, no output)
96 [6.0.0+] GetReportInfo (No input, returns an output 0x20-byte struct)

This was added with 5.0.0.

ISaveDataDivisionImporter

Cmd Name
0 [6.0.0+] GetSaveDataInfo (No input/output, takes a type-0x6 output buffer)
16 OpenSaveDataDiffChunkIterator (No input, returns an #ISaveDataChunkIterator)
32 InitializeImport (No input, returns an output u64)
33 FinalizeImport (No input/output)
34 [6.0.0+] CancelImport (No input/output)
35 [6.0.0+] GetImportContext (No input/output, takes a type-0x6 output buffer)
36 [6.0.0+] SuspendImport (No input/output)
48 OpenSaveDataChunkImporter (Takes an input u32, returns an #ISaveDataChunkImporter)
64 [6.0.0+] GetImportInitialDataAad (No input, returns an output 0x20-byte struct)
80 [6.0.0+] GetReportInfo (No input, returns an output 0x20-byte struct)

This was added with 5.0.0.

ISaveDataChunkIterator

Cmd Name
0 Next (No input/output)
1 IsEnd (No input, returns an output u8)
16 GetId (No input, returns an output u32)

This was added with 5.0.0.

ISaveDataChunkExporter

Cmd Name
0 Pull (Takes an input u64 and a type-0x6 output buffer, returns an output u64)
16 [6.0.0+] GetRestRawDataSize (No input, returns an output u64)

This was added with 5.0.0.

ISaveDataChunkImporter

Cmd Name
0 Push (Takes an input u64 and a type-0x5 input buffer, no output)

This was added with 5.0.0.

ISaveDataTransferProhibiter

This was added with 6.0.0.

This doesn't seem to handle any commands (?).

IMultiCommitManager

Cmd Name
1 ? (Takes an input #IFilesystem, no output)
2 ? (No input/output)

This was added with 6.0.0.

FileSystemType

Value Name
0 Invalid
1 Invalid
2 Logo
3 ContentControl
4 ContentManual
5 ContentMeta
6 ContentData
7 ApplicationPackage

StorageId

Value Name
0 None
1 Host
2 GameCard
3 NandSystem
4 NandUser
5 SdCard

ContentStorageId

Value Name
0 System
1 User
2 SdCard

SaveDataSpaceId

Value Name
0 System
1 User
2 SdSystem
100 [3.0.0+] ProperSystem

Determines the storage where the savedata is stored.

SaveDataType

Value Name
0 SystemSaveData
1 SaveData
2 BcatDeliveryCacheStorage
3 DeviceSaveData
4 [3.0.0+] TemporaryStorage
5 [3.0.0+] CacheStorage

ImageDirectoryId

Value Name
0 Nand
1 SdCard

CloudBackupWorkStorageId

Value Name
0 Nand
1 SdCard

ContentPath

These are the 0x300 paths to NCA files for the various filesystems FS can access, beginning with @. They're passed via X descriptors, and returned via various ncm/lr commands.

Path Notes
@SystemContent
@UserContent
@SdCardContent
@CalibFile
@Safe
@User
@System
@Sdcard
@Host
@GcApp Gamecard App partition (Partition 2)
@GcS00000001 Gamecard Contents.
@upp Gamecard update partition (Partition 0)
[4.0.0+] @RegUpdate Registered update partition

Save Struct

Offset Size Description
0x0 0x8 0 for SystemSaveData. SaveData: 0 can be used for accessing the savedata associated with the current FS session titleID, otherwise when set this is the titleID associated with the savedata to access.
0x8 0x10 userID for user-specific savedata(saveuser) when set, otherwise when zero this indicates the common savedata(savecommon). This is loaded from Account_services.
0x18 0x8 u64 saveID. 0 for SaveData.
0x20 0x1 #SaveDataType
0x21 0x1 Save data 'rank' or 'precedence'. 0 if this save data is considered the primary save data. 1 if it's considered the secondary save data.
0x22 0x2 Save data index
0x24 0x4 Padding
0x28 0x8 0 for SystemSaveData/SaveData.
0x30 0x8 0 for SystemSaveData/SaveData.
0x38 0x8 0 for SystemSaveData/SaveData.

Total size is 0x40-bytes.

For DeviceSaveData, this struct is all-zero except for the #SaveDataType field.

SaveCreate Struct

Offset Size Description
0x0 0x8 IVFC level4 size?
0x8 0x8 Same as offset 0x0 normally? Hard-coded to 0x80000 for BcatSaveData.
0x10 0x8 0x4000 for SystemSaveData/SaveData/DeviceSaveData/BcatSaveData. IVFC level4 block-size in bytes?
0x18 0x8 Official user-processes only uses 0 here for SystemSaveData/SaveData. For the dedicated save-creation code with SaveData/DeviceSaveData, this value comes from an input param with official user-processes. For BcatSaveData, this is the hard-coded titleID of the bcat-sysmodule.
0x20 0x4 Written using an input param for official user-processes. Hard-coded 0 for BcatSaveData.
0x24 0x1 Official user-processes only uses 0 here for SystemSaveData, 1 for SaveData/DeviceSaveData/BcatSaveData.
0x25 0x1 0 for SystemSaveData/SaveData.
0x26 0x1A Not initialized for SystemSaveData/SaveData.

Total size is 0x40-bytes.

DeviceSaveData

This is accessed using the same commands for SaveData with the same input u8, the only difference compared to SaveData is the Save-struct.

BcatSaveData

This is accessed using the same commands for SaveData with the same input u8. The Save-struct is the same as DeviceSaveData, except that the titleID field is set to <input titleID>. See above regarding SaveCreate-struct.

The 0x10-byte struct passed to #CreateSaveDataFileSystem has the first 0x5-bytes set to all-zero.

SaveDataInfo

Offset Size Description
0x0 0x8 Unknown saveID
0x8 0x1 #SaveDataSpaceId
0x9 0x1 #SaveDataType
0xA 0x6 Padding?
0x10 0x10 userID
0x20 0x8 saveID, 0 for regular SaveData.
0x28 0x8 Application titleID, for regular SaveData.
0x30 0x8 Raw saveimage size
0x38 0x2 Save data index
0x40 0x1 Save data 'rank' or 'precedence'. 0 if this save data is considered the primary save data. 1 if it's considered the secondary save data.
0x41 0x25 Unknown. Usually zeros?

This is a 0x60-byte struct.

SaveDataFileSystemExtraData

This is a 0x200-byte struct. Appears to match Savegames#Extra_data.

InitialDataVersion2

This is a 0x8210-byte struct used by #ISaveDataTransferManagerWithDivision.