FS:OpenArchive

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	Accessible via FS	Accessible via FSPXI	Requires binary Lowpath
0x00000003	Application RomFS	Yes	No	No
0x00000004	SaveData (the saveID/mediatype for this is loaded from data originally from the user process' exheader)	Yes	No	No
0x00000006	ExtSaveData	Yes	No	Yes
0x00000007	Shared ExtSaveData	Yes	No	Yes
0x00000008	SystemSaveData	Yes	No	Yes
0x00000009	SDMC	Yes	Yes	No
0x0000000A	SDMC Write-Only	Yes	No	No
0x12345678	ExtSaveData for BOSS	Yes	No	Yes
0x12345679	CARD SPI FS	Yes	Yes	No
0x1234567B	ExtSaveData, and ExtSaveData for BOSS	No	Yes	Yes
0x1234567C	SystemSaveData	No	Yes	Yes
0x1234567D	NAND RW	Yes	Yes	No
0x1234567E	NAND RO	Yes	Yes	No
0x1234567F	NAND RO Write FS	No	Yes	No
0x2345678A	User/GameCard SaveData (for check), and other uses (FS can only mount the latter) (lo hi mediatype reserved)	Yes	Yes	Yes
0x2345678B	?	No	No	Yes
0x2345678C	?	No	No	Yes
0x2345678D	?	No	No	No
0x2345678E	SaveData, ExeFS, and RomFS (For fs:LDR, only ExeFS)	Yes	Yes	Yes
0x567890AB	NAND CTR FS	No	Yes	No
0x567890AC	TWL PHOTO	Yes	Yes	No
0x567890AD	?	No	Yes	No
0x567890AE	NAND TWL FS	Yes	Yes	No
0x567890AF	NAND W FS	Yes	Yes	No
0x567890B0	?	No	Yes	No
0x567890B1	Gamecard SaveData (for check). This is a wrapper for UserSaveDataForCheck: the OpenArchive code for that is called with archive-lowpath TID=0/mediatype=2(gamecard).	Yes	No	No
0x567890B2	UserSaveData (for check). This is the same as the regular SaveData archive, except with this the savedata ID and mediatype is loaded from the input archive lowpath.	Yes	No	Yes
0x567890B4	?	Yes	No	No

Archives listed as not requiring a binary lowpath, use lowpath type empty.

Archives CTR NAND, NAND RO Write FS, TWL NAND, NAND W FS, and CARD SPI FS require the corresponding process exheader access control mount flag to be set, in the exheader for any of the currently running ARM11 processes, for FSPXI. The access rights checked by FS module for archive mounting with fs:USER, are stored in the process' exheader accessinfo.

The CARDSPI archive allows access to the gamecard CARD1 raw savedata flash(aka "cardspi:/" in Process9), the file lowpath must be WCHAR "/". The "NAND W FS" archive allows access to the raw NAND image(aka "wnand:/" in Process9), the file lowpath must be WCHAR "/".