Difference between revisions of "NCM services"
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== NcaID == | == NcaID == | ||
This is a 0x10-byte entry. This is originally from the hex portion of "<hex>.nca" directory-names from this storage FS(like [[SD_Filesystem|SD]]). | This is a 0x10-byte entry. This is originally from the hex portion of "<hex>.nca" directory-names from this storage FS(like [[SD_Filesystem|SD]]). | ||
+ | |||
+ | == Enums == | ||
+ | === Title Types === | ||
+ | |||
+ | {| class="wikitable" border="1" | ||
+ | |- | ||
+ | ! Value | ||
+ | ! Description | ||
+ | |- | ||
+ | | 0x80 | ||
+ | | Regular application | ||
+ | |- | ||
+ | | 0x81 | ||
+ | | Update title | ||
+ | |} |
Revision as of 23:02, 14 June 2017
ncm
Cmd | Name | Notes |
---|---|---|
0 | ||
1 | ||
2 | ||
3 | ||
4 | GetContentStorage | |
5 | GetContentMetaDatabase | |
8 | ||
9 | InitializeStorageForMediaId | |
10 | UninitializeStorageForMediaId | |
11 | InitializeDatabaseForMediaId | |
12 | UninitializeDatabaseForMediaId |
All of the above cmds takes a u8 as input.
IContentStorage
Cmd | Name | Notes |
---|---|---|
0 | #GetRootEntry | |
1 | Takes two 0x10-sized entries, and a u64. | |
2 | Takes a 0x10-sized entry. | |
3 | Takes a 0x10-sized entry, returns a bool/u8. | |
4 | Takes a 0x10-sized entry, a u64, and type-5 array. | |
5 | Takes two 0x10-sized entries. | |
6 | DeleteContent? | Takes a 0x10-sized entry. |
7 | Takes a 0x10-sized entry, returns a bool/u8. | |
8 | Takes a type-0x1A string and a 0x10-sized entry. | |
9 | Takes a type-0x1A string and a 0x10-sized entry. | |
10 | Void. | |
11 | Takes a type-6 buffer, each entry 0x10 bytes, and returns a u32. | |
12 | #GetNumberOfEntries | |
13 | #GetEntries | |
14 | #GetEntrySize | |
15 | Void. | |
16 | Takes three 0x10-sized entries. | |
17 | Takes a 0x10-sized entry and a u64. | |
18 | #ReadEntryRaw | |
19 | Takes a 0x10-sized entry and returns another 0x10-sized entry. | |
20 | #GetNcaTitleInfo | |
21 | Takes a 0x10-sized entry, a u64, and a type5 buffer. | |
22 | GetFreeSpace | |
23 | GetTotalSpace |
GetRootEntry
Returns an entry of 16 completely random-looking bytes. It is not possible to read this entry.
Changes on reboot?
GetNumberOfEntries
Writes the total number of entries which can be read by GetEntries, to cmdreply <SFCO_offset>+0x10.
GetEntries
Takes an output buffer, u32 offset and gets all entries starting at that offset. Returns number of entries read.
Each entry is a #NcaID.
The total read entries is exactly the same as the number of "<hex>.nca" directories in the storage FS(or at least under the "registered" directory?).
GetEntrySize
Takes a #NcaID as input.
Returns the total size readable by ReadEntryRaw. This is the same as the size field from offset 0x28 in the NAX0 header in the "<NcaID>.nca/00" file. This matches <filesize of that file>-0x4000.
ReadEntryRaw
Takes an output buffer, a #NcaID as input, and a u64 file offset.
Returns encrypted looking data. Doesn't match the encrypted raw data in the "<NcaID>.nca/00" file.
See GetEntrySize for the total size readable with this.
GetNcaTitleInfo
Takes a #NcaID and returns the following 0x10-sized entry.
With some NcaIDs this may return 0 with an all-zero output entry. This seems to be the case for most/all (?) NandSystem NcaIds?
Offset | Size | Description |
---|---|---|
0x0 | 0x8 | Big-endian titleID |
0x8 | 0x8 | Unknown. Usually zero? |
IContentMetaDatabase
Cmd | Name | Notes |
---|---|---|
0 | InsertContentEntry? | Takes a 0x10-sized entry, a type-5 buffer and a u64. |
1 | Takes a 0x10-sized entry, a type-6 buffer and a u64. Returns a u64. | |
2 | Takes a 0x10-sized entry. | |
3 | Takes a 0x10-sized entry and a bool/u8. Returns an 0x10-sized entry. | |
4 | Takes a type-6 buffer, each entry being 24 bytes, 0x10-sized entry and a u32. Returns a u32. | |
5 | Iterate | Takes a type-6 buffer, each entry being 16 bytes, a 0x10-sized entry, and a u32. Returns a u32. |
6 | #GetTitleIdInfo | |
7 | #GetTitleList | Takes a type-6 buffer, each entry being 24 bytes, and a u8/bool. Returns two u32's. |
8 | Takes a 0x10-sized entry. Returns a bool/u8. | |
9 | Takes a type-5 buffer, each entry being 16 bytes. Returns a bool/u8. | |
10 | Takes a 0x10-sized entry. Returns a u64. | |
11 | Takes a 0x10-sized entry. Returns a u32. | |
12 | Takes a 0x10-sized entry. Returns a u64. | |
13 | Void. | |
14 | Takes a type-6 byte buffer, and a type-5 buffer with each entry being 16 bytes. | |
15 | EndIteration | Void. |
16 | Takes two 0x10-sized entries. Returns a bool/u8. | |
17 | Takes a type-6 buffer, each entry being 16 bytes, a 0x10-sized entry and a u32. Returns a u32. | |
18 | Takes a 0x10-sized entry. Returns a bool/u8. | |
19 | Takes a 0x10-sized entry. Returns a u32. |
GetTitleIdInfo
Takes a u64 title-id as input, returns same title-id together with info struct.
struct title_info { u32 version; u8 type; u8 pad[3]; };
GetTitleList
Each 24-byte entries is as follows:
u64 title_id_update; struct title_info info; u64 title_id;
NcaID
This is a 0x10-byte entry. This is originally from the hex portion of "<hex>.nca" directory-names from this storage FS(like SD).
Enums
Title Types
Value | Description |
---|---|
0x80 | Regular application |
0x81 | Update title |