Difference between revisions of "CNMT"
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(→Meta records: broken link) |
(Update header and extended header - next is extended data) |
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Line 12: | Line 12: | ||
* "Delta_{lower-case hex titleID}.cnmt" | * "Delta_{lower-case hex titleID}.cnmt" | ||
− | + | == Header == | |
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
|- | |- | ||
Line 20: | Line 20: | ||
|- | |- | ||
| 0x0 | | 0x0 | ||
− | | | + | | 0x8 |
| Title ID | | Title ID | ||
|- | |- | ||
| 0x8 | | 0x8 | ||
− | | | + | | 0x4 |
− | | | + | | [[Title_list|Version]] |
|- | |- | ||
| 0xC | | 0xC | ||
− | | | + | | 0x1 |
− | | | + | | [[NCM_services#Title_Types|Meta Type]] |
|- | |- | ||
| 0xD | | 0xD | ||
− | | | + | | 0x1 |
− | | | + | | Unused |
|- | |- | ||
| 0xE | | 0xE | ||
− | | | + | | 0x2 |
− | | | + | | Extended Header Size |
|- | |- | ||
| 0x10 | | 0x10 | ||
− | | | + | | 0x2 |
− | | | + | | Content Count |
|- | |- | ||
| 0x12 | | 0x12 | ||
− | | | + | | 0x2 |
− | | | + | | Content Meta Count |
|- | |- | ||
| 0x14 | | 0x14 | ||
− | | | + | | 0x1 |
− | | | + | | Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless) |
+ | |- | ||
+ | | 0x15 | ||
+ | | 0x3 | ||
+ | | Unused | ||
+ | |- | ||
+ | | 0x18 | ||
+ | | 0x4 | ||
+ | | Required Download System Version | ||
+ | |- | ||
+ | | 0x1C | ||
+ | | 0x4 | ||
+ | | Unused | ||
|} | |} | ||
− | + | == SystemUpdate Extended Header == | |
+ | {| class="wikitable" border="1" | ||
+ | |- | ||
+ | ! Offset | ||
+ | ! Size | ||
+ | ! Description | ||
+ | |- | ||
+ | | 0x0 | ||
+ | | 0x4 | ||
+ | | Extended Header Size | ||
+ | |} | ||
− | + | == Application Extended Header == | |
− | + | {| class="wikitable" border="1" | |
− | + | |- | |
+ | ! Offset | ||
+ | ! Size | ||
+ | ! Description | ||
+ | |- | ||
+ | | 0x0 | ||
+ | | 0x8 | ||
+ | | Patch ID | ||
+ | |- | ||
+ | | 0x8 | ||
+ | | 0x4 | ||
+ | | Required System Version | ||
+ | |} | ||
− | + | == Patch Extended Header == | |
− | |||
− | == | ||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
|- | |- | ||
Line 67: | Line 99: | ||
! Description | ! Description | ||
|- | |- | ||
− | | | + | | 0x0 |
− | | | + | | 0x8 |
− | | | + | | Application ID |
+ | |- | ||
+ | | 0x8 | ||
+ | | 0x4 | ||
+ | | Required System Version | ||
+ | |- | ||
+ | | 0xC | ||
+ | | 0x4 | ||
+ | | Extended Data Size | ||
|- | |- | ||
− | | | + | | 0x10 |
− | | | + | | 0x8 |
− | | | + | | Unused |
|} | |} | ||
− | == | + | == AddOnContent Extended Header == |
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
|- | |- | ||
Line 83: | Line 123: | ||
! Description | ! Description | ||
|- | |- | ||
− | | | + | | 0x0 |
− | | | + | | 0x8 |
− | | | + | | Application ID |
+ | |- | ||
+ | | 0x8 | ||
+ | | 0x4 | ||
+ | | Required Application Version | ||
|- | |- | ||
− | | | + | | 0xC |
− | | | + | | 0x4 |
− | | | + | | Unused |
|} | |} | ||
− | == | + | == Delta Extended Header == |
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
|- | |- | ||
Line 99: | Line 143: | ||
! Description | ! Description | ||
|- | |- | ||
− | | | + | | 0x0 |
− | | | + | | 0x8 |
− | | Application | + | | Application ID |
+ | |- | ||
+ | | 0x8 | ||
+ | | 0x4 | ||
+ | | Extended Data Size | ||
|- | |- | ||
− | | | + | | 0xC |
− | | | + | | 0x4 |
− | | | + | | Unused |
|} | |} | ||
== Content records == | == Content records == | ||
− | |||
− | |||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
Line 119: | Line 165: | ||
|- | |- | ||
| 0x0 | | 0x0 | ||
− | | | + | | 0x20 |
| Hash | | Hash | ||
|- | |- | ||
| 0x20 | | 0x20 | ||
− | | | + | | 0x10 |
− | | | + | | Content ID |
|- | |- | ||
| 0x30 | | 0x30 | ||
− | | | + | | 0x6 |
− | | Size | + | | Size |
|- | |- | ||
| 0x36 | | 0x36 | ||
− | | | + | | 0x1 |
− | | Type (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]]) | + | | Title Type (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]]) |
|- | |- | ||
| 0x37 | | 0x37 | ||
− | | | + | | 0x1 |
− | | | + | | Id Offset |
|} | |} | ||
== Meta records == | == Meta records == | ||
− | |||
− | |||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
Line 150: | Line 194: | ||
|- | |- | ||
| 0x0 | | 0x0 | ||
− | | | + | | 0x8 |
| Title ID | | Title ID | ||
|- | |- | ||
| 0x8 | | 0x8 | ||
− | | | + | | 0x4 |
− | | | + | | Version |
|- | |- | ||
| 0xC | | 0xC | ||
− | | | + | | 0x1 |
− | | | + | | [[NCM_services#Title_Types|Meta Type]] |
|- | |- | ||
| 0xD | | 0xD | ||
− | | | + | | 0x1 |
− | | | + | | Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless) |
|- | |- | ||
| 0xE | | 0xE | ||
− | | | + | | 0x2 |
− | | Unused | + | | Unused |
|} | |} | ||
Revision as of 15:30, 22 May 2019
This is the metadata file that ends in ".cnmt{.nca}"
or "meta0.ncd"
. This seems to replace the TMD format.
There's at least 9 different filenames used for ".cnmt":
- "Application_{lower-case hex titleID}.cnmt"
- "Patch_{lower-case hex titleID}.cnmt"
- "AddOnContent_{lower-case hex titleID}.cnmt"
- "SystemUpdate_{hex titleID}.cnmt"
- "SystemData_{lower-case hex titleID}.cnmt"
- "SystemProgram_{lower-case hex titleID}.cnmt"
- "BootImagePackage_{lower-case hex titleID}.cnmt"
- "BootImagePackageSafe_{lower-case hex titleID}.cnmt"
- "Delta_{lower-case hex titleID}.cnmt"
Header
Offset | Size | Description |
---|---|---|
0x0 | 0x8 | Title ID |
0x8 | 0x4 | Version |
0xC | 0x1 | Meta Type |
0xD | 0x1 | Unused |
0xE | 0x2 | Extended Header Size |
0x10 | 0x2 | Content Count |
0x12 | 0x2 | Content Meta Count |
0x14 | 0x1 | Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless) |
0x15 | 0x3 | Unused |
0x18 | 0x4 | Required Download System Version |
0x1C | 0x4 | Unused |
SystemUpdate Extended Header
Offset | Size | Description |
---|---|---|
0x0 | 0x4 | Extended Header Size |
Application Extended Header
Offset | Size | Description |
---|---|---|
0x0 | 0x8 | Patch ID |
0x8 | 0x4 | Required System Version |
Patch Extended Header
Offset | Size | Description |
---|---|---|
0x0 | 0x8 | Application ID |
0x8 | 0x4 | Required System Version |
0xC | 0x4 | Extended Data Size |
0x10 | 0x8 | Unused |
AddOnContent Extended Header
Offset | Size | Description |
---|---|---|
0x0 | 0x8 | Application ID |
0x8 | 0x4 | Required Application Version |
0xC | 0x4 | Unused |
Delta Extended Header
Offset | Size | Description |
---|---|---|
0x0 | 0x8 | Application ID |
0x8 | 0x4 | Extended Data Size |
0xC | 0x4 | Unused |
Content records
Offset | Size | Description |
---|---|---|
0x0 | 0x20 | Hash |
0x20 | 0x10 | Content ID |
0x30 | 0x6 | Size |
0x36 | 0x1 | Title Type (0=Meta, 1=Program, 2=Data, 3=Control, 4=HtmlDocument, 5=LegalInformation, 6=DeltaFragment) |
0x37 | 0x1 | Id Offset |
Meta records
Offset | Size | Description |
---|---|---|
0x0 | 0x8 | Title ID |
0x8 | 0x4 | Version |
0xC | 0x1 | Meta Type |
0xD | 0x1 | Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless) |
0xE | 0x2 | Unused |
This is used for SystemUpdate, see here: NCM_services#ReadEntryMetaRecords.
Extended data
Patch-type cnmt files include an extended data section.
Offset | Size | Description |
---|---|---|
0x0 | 4 | Number of previous cnmt entries. |
0x4 | 4 | Number of previous delta entries. |
0x8 | 4 | Number of delta info entries. |
0xC | 4 | Number of delta application info entries. |
0x10 | 4 | Number of previous content entries. |
0x14 | 4 | Number of delta content entries. |
0x18 | 4 | Unused? |
0x1C | 0x38*X | Previous cnmt entries |
0x28*X | Previous delta entries | |
0x28*X | Delta info entries | |
0x34*X | Delta application info entries | |
0x18*X | Previous content entries | |
0x38*X | Delta content entries. (Standard content records) | |
4 | Unknown | |
4 | Unknown | |
4 | Unknown |
Previous cnmt records
Each entry is 0x38 bytes:
Offset | Size | Description |
---|---|---|
0x0 | 8 | Title ID |
0x8 | 4 | Title version |
0xC | 1 | Type (see Title Types) |
0xD | 3 | Unused? |
0x10 | 32 | Hash |
0x30 | 2 | Unknown |
0x32 | 2 | Unused? |
0x34 | 4 | Unused? |
This contains information on previous metadata files.
Previous delta records
Each entry is 0x28 bytes:
Offset | Size | Description |
---|---|---|
0x0 | 8 | Old title ID |
0x8 | 8 | New title ID |
0x10 | 4 | Old title version |
0x14 | 4 | New title version |
0x18 | 8 | Size |
0x20 | 8 | Unused? |
This contains information on previous delta patches.
Delta info records
Each entry is 0x28 bytes:
Offset | Size | Description |
---|---|---|
0x0 | 8 | Old title ID |
0x8 | 8 | New title ID |
0x10 | 4 | Old title version |
0x14 | 4 | New title version |
0x18 | 8 | Some sort of index? |
0x20 | 8 | Some sort of index? |
This contains information on the current delta patch.
Delta application info records
Each entry is 0x34 bytes:
Offset | Size | Description |
---|---|---|
0x0 | 16 | Old NcaId |
0x10 | 16 | New NcaId |
0x20 | 6 | Old size |
0x26 | 2 | Upper 2 bytes of the new size |
0x28 | 4 | Lower 4 bytes of the new size |
0x2C | 2 | Unknown |
0x2E | 1 | Type (see Title Types) |
0x2F | 1 | ? bit0 set = don't install? |
0x30 | 4 | Unused? |
This contains information on how to apply deltas to the previous patch.
Previous content records
Each entry is 0x18 bytes:
Offset | Size | Description |
---|---|---|
0x0 | 16 | NcaId |
0x10 | 6 | Size |
0x16 | 1 | Type (see Title Types) |
0x17 | 1 |
This contains information on previous title content from earlier patches.