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Line 1:
Line 1: − 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 == Line 21:
Line 14: − + Line 29:
Line 22: − + − + − + − + − + − + − + − + − + − + + + Line 73:
Line 68: − + − + + + Line 85:
Line 82: − + − + + + + + − + + + Line 101:
Line 104: − + − + − + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + − + − + + + Line 125:
Line 160: − + − + − + − + + + + + Line 145:
Line 184: − + + + + + − + − + − + + + + + − + + Line 166:
Line 214: − + − + − + + + + + − + − + − + + Line 195:
Line 248: − + Line 203:
Line 256: − + − + − + − + + + + + + + + + + + + + + + + + + + + + + + Line 230:
Line 305: − + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + − + − + − + − + − + + − + + Line 251:
Line 374: − + − + − + − + − + − + − + − + − + + + + + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + + Line 311:
Line 439: − + − + − |- − | 0x8 − | 0x4 − | Version − |- − | 0xC − | 0x1 − | [[NCM_services#Title_Types|Title Types]] − |- − | 0xD − | 0x1 − | Attributes − |- − | 0xE − | 0x2 − | Unused Line 336:
Line 448: − + − + − + + Line 353:
Line 466: − + − + − + − + − + − + − + + Line 386:
Line 500: − + − + − + − + − + − + − + − + − + + Line 427:
Line 542: − + − + − + − + − + − + − + − + − + + Line 468:
Line 584: − + − + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
no edit summary
This is the metadata file that ends in <code>".cnmt{.nca}"</code> or <code>"meta0.ncd"</code>. This seems to replace the TMD format.
This is the metadata file that ends in <code>".cnmt{.nca}"</code> or <code>"meta0.ncd"</code>. This seems to replace the TMD format.
The official name for CNMT is "PackagedContentMeta".
= PackagedContentMetaHeader =
This is "nn::ncm::PackagedContentMetaHeader".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0x0
| 0x0
| 0x8
| 0x8
| Title ID
| Id
|-
|-
| 0x8
| 0x8
| 0xC
| 0xC
| 0x1
| 0x1
| [[NCM_services#Title_Types|Meta Type]]
| [[NCM_services#ContentMetaType|ContentMetaType]]
|-
|-
| 0xD
| 0xD
| 0x1
| 0x1
| Unused
| [17.0.0+] [[NCM_services#ContentMetaPlatform|ContentMetaPlatform]] ([1.0.0-16.1.0] Reserved)
|-
|-
| 0xE
| 0xE
| 0x2
| 0x2
| Extended Header Size
| ExtendedHeaderSize
|-
|-
| 0x10
| 0x10
| 0x2
| 0x2
| Content Count
| ContentCount
|-
|-
| 0x12
| 0x12
| 0x2
| 0x2
| Content Meta Count
| ContentMetaCount
|-
|-
| 0x14
| 0x14
| 0x1
| 0x1
| Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless)
| ContentMetaAttributes (0=None, 1=IncludesExFatDriver, 2=Rebootless, 4=Compacted)
|-
|-
| 0x15
| 0x15
| 0x3
| 0x3
| Unused
| Reserved
|-
|-
| 0x18
| 0x18
| 0x4
| 0x4
| Required Download System Version
| RequiredDownloadSystemVersion
|-
|-
| 0x1C
| 0x1C
| 0x4
| 0x4
| Unused
| Reserved
|}
|}
== SystemUpdate Extended Header ==
= SystemUpdateMetaExtendedHeader =
This is "nn::ncm::SystemUpdateMetaExtendedHeader".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0x0
| 0x0
| 0x4
| 0x4
| Extended Data Size
| ExtendedDataSize
|}
|}
== Application Extended Header ==
= ApplicationMetaExtendedHeader =
This is "nn::ncm::ApplicationMetaExtendedHeader".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0x0
| 0x0
| 0x8
| 0x8
| Patch ID
| PatchId
|-
|-
| 0x8
| 0x8
| 0x4
| 0x4
| Required System Version
| RequiredSystemVersion
|-
| 0xC
| 0x4
| RequiredApplicationVersion
|}
|}
== Patch Extended Header ==
= PatchMetaExtendedHeader =
This is "nn::ncm::PatchMetaExtendedHeader".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0x0
| 0x0
| 0x8
| 0x8
| Application ID
| ApplicationId
|-
|-
| 0x8
| 0x8
| 0x4
| 0x4
| Required System Version
| RequiredSystemVersion
|-
|-
| 0xC
| 0xC
| 0x4
| 0x4
| Extended Data Size
| ExtendedDataSize
|-
| 0x10
| 0x8
| Reserved
|}
= AddOnContentMetaExtendedHeader =
This is "nn::ncm::AddOnContentMetaExtendedHeader".
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x8
| ApplicationId
|-
| 0x8
| 0x4
| RequiredApplicationVersion
|-
| 0xC
| 0x1
| [15.0.0+] ContentAccessibilities ([1.0.0-14.1.2] Reserved)
|-
| 0xD
| 0x3
| Reserved
|-
|-
| 0x10
| 0x10
| 0x8
| 0x8
| Unused
| [15.0.0+] DataPatchId
|}
|}
== AddOnContent Extended Header ==
= DeltaMetaExtendedHeader =
This is "nn::ncm::DeltaMetaExtendedHeader".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0x0
| 0x0
| 0x8
| 0x8
| Application ID
| ApplicationId
|-
|-
| 0x8
| 0x8
| 0x4
| 0x4
| Required Application Version
| ExtendedDataSize
|-
|-
| 0xC
| 0xC
| 0x4
| 0x4
| Unused
| Reserved
|}
|}
== Delta Extended Header ==
= DataPatchMetaExtendedHeader =
This is "nn::ncm::DataPatchMetaExtendedHeader".
This was added with [15.0.0+].
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0x0
| 0x0
| 0x8
| 0x8
| Application ID
| DataId
|-
|-
| 0x8
| 0x8
| 0x8
| ApplicationId
|-
| 0x10
| 0x4
| 0x4
| Extended Data Size
| RequiredApplicationVersion
|-
|-
| 0xC
| 0x14
| 0x4
| 0x4
| Unused
| ExtendedDataSize
|-
| 0x18
| 0x8
| Reserved
|}
|}
== Content Records ==
= PackagedContentInfo =
This is "nn::ncm::PackagedContentInfo".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
| 0x0
| 0x0
| 0x20
| 0x20
| Hash
| Hash (SHA256 of the referenced content)
|-
|-
| 0x20
| 0x20
| 0x10
| 0x10
| Content ID
| ContentId
|-
|-
| 0x30
| 0x30
| 0x6
| [15.0.0+] 0x5 ([1.0.0-14.1.2] 0x6)
| Size
| Size
|-
| 0x35
| 0x1
| [15.0.0+] ContentAttributes
|-
|-
| 0x36
| 0x36
| 0x1
| 0x1
| Title Type (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]])
| ContentType (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]])
|-
|-
| 0x37
| 0x37
| 0x1
| 0x1
| Id Offset
| IdOffset
|}
|}
== Content Meta Records ==
= ContentMetaInfo =
This is "nn::ncm::ContentMetaInfo".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
| 0x0
| 0x0
| 0x8
| 0x8
| Title ID
| Id
|-
|-
| 0x8
| 0x8
| 0xC
| 0xC
| 0x1
| 0x1
| [[NCM_services#Title_Types|Meta Type]]
| [[NCM_services#ContentMetaType|ContentMetaType]]
|-
|-
| 0xD
| 0xD
| 0x1
| 0x1
| Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless)
| ContentMetaAttributes (0=None, 1=IncludesExFatDriver, 2=Rebootless, 4=Compacted)
|-
|-
| 0xE
| 0xE
| 0x2
| 0x2
| Unused
| Reserved
|}
|}
This is used for SystemUpdate, see here: [[NCM_services#ReadEntryMetaRecords]].
This is used for SystemUpdate, see here: [[NCM_services#ReadEntryMetaRecords]].
== SystemUpdate Extended Data ==
= SystemUpdateMetaExtendedData =
This is "nn::ncm::SystemUpdateMetaExtendedData".
If the Version field is 1, the format is:
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x4
| Version
|-
| 0x4
| 0x4
| VariationCount
|-
| 0x8
| 0x20 * VariationCount
| [[#FirmwareVariationInfo|FirmwareVariationInfo]] (Version 1)
|}
If the Version field is 2, the format is:
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0x4
| 0x4
| 0x4
| 0x4
| Variation Count
| VariationCount
|-
|-
| 0x8
| 0x8
| 0x4 * VariationCount
| FirmwareVariationId
|-
| Variable
| 0x20 * VariationCount
| [[#FirmwareVariationInfo|FirmwareVariationInfo]] (Version 2)
|-
| Variable
| 0x10 * MetaCount (from [[#FirmwareVariationInfo|FirmwareVariationInfo]] (Version 2))
| [[#ContentMetaInfo|ContentMetaInfo]] (if ReferToBase is False)
|}
== FirmwareVariationInfo ==
This is "FirmwareVariationInfo ".
If the Version field is 1, the format is:
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x4
| FirmwareVariationId
|-
| 0x4
| 0x1C
| Reserved
|}
If the Version field is 2, the format is:
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x1
| ReferToBase (0=False, 1=True)
|-
| 0x1
| 0x3
| Reserved
|-
| 0x4
| 0x4
| Firmware Variation
| 0x4
|-
| MetaCount
| 0xC
|-
| 0x1C * Variation Count
| 0x8
| Unused
| 0x18
| Reserved
|}
|}
== Patch Extended Data ==
= PatchMetaExtendedData =
This is "nn::ncm::PatchMetaExtendedData".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
| 0x0
| 0x0
| 0x4
| 0x4
| History Count
| PatchHistoryHeaderCount
|-
|-
| 0x4
| 0x4
| 0x4
| 0x4
| Delta History Count
| PatchDeltaHistoryCount
|-
|-
| 0x8
| 0x8
| 0x4
| 0x4
| Delta Count
| PatchDeltaHeaderCount
|-
|-
| 0xC
| 0xC
| 0x4
| 0x4
| Fragment Set Count
| FragmentSetCount
|-
|-
| 0x10
| 0x10
| 0x4
| 0x4
| History Content Count
| PatchHistoryContentInfoCount
|-
|-
| 0x14
| 0x14
| 0x4
| 0x4
| Delta Content Count
| PatchDeltaPackagedContentInfoCount
|-
|-
| 0x18
| 0x18
| 0x4
| 0x4
| Unused
| Reserved
|-
|-
| 0x1C
| 0x1C
| 0x38 * History Count
| 0x38 * PatchHistoryHeaderCount
| History Headers
| [[#PatchHistoryHeader|PatchHistoryHeader]]
|-
| Variable
| 0x28 * PatchDeltaHistoryCount
| [[#PatchDeltaHistory|PatchDeltaHistory]]
|-
|-
|
| Variable
| 0x28 * Delta History Count
| 0x28 * PatchDeltaHeaderCount
| Delta Histories
| [[#PatchDeltaHeader|PatchDeltaHeader]]
|-
|-
|
| Variable
| 0x28 * Delta Count
| 0x34 * FragmentSetCount
| Delta Headers
| [[#FragmentSet|FragmentSet]]
|-
|-
|
| Variable
| 0x34 * Fragment Set Count
| 0x18 * PatchHistoryContentInfoCount
| Fragment Sets
| [[#PackagedContentInfo|PatchHistoryContentInfo]] ([[#PackagedContentInfo|PackagedContentInfo]] without the Hash entry)
|-
|-
|
| Variable
| 0x18 * History Content Count
| 0x38 * PatchDeltaPackagedContentInfoCount
| History Content Records (Content Records without the Hash entry)
| [[#PackagedContentInfo|PatchDeltaPackagedContentInfo]]
|-
|-
|
| Variable
| 0x38 * Delta Content Count
| 0x4 * FragmentIndicatorCount (from [[#FragmentSet|FragmentSet]])
| Delta Content Records
| [[#FragmentIndicator|FragmentIndicator]]
|}
|}
=== History Header ===
== PatchHistoryHeader ==
This is "nn::ncm::PatchHistoryHeader".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0x0
| 0x0
| 0x8
| 0x10
| Title ID
| ContentMetaKey
|-
|-
| 0x10
| 0x10
| 0x30
| 0x30
| 0x2
| 0x2
| Content Info Count
| ContentInfoCount
|-
|-
| 0x32
| 0x32
| 0x6
| 0x6
| Unused
| Reserved
|}
|}
=== Delta History ===
== PatchDeltaHistory ==
This is "nn::ncm::PatchDeltaHistory".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
| 0x0
| 0x0
| 0x8
| 0x8
| Source Title ID
| SourcePatchId
|-
|-
| 0x8
| 0x8
| 0x8
| 0x8
| Destination Title ID
| DestinationPatchId
|-
|-
| 0x10
| 0x10
| 0x4
| 0x4
| Source Version
| SourceVersion
|-
|-
| 0x14
| 0x14
| 0x4
| 0x4
| Destination Version
| DestinationVersion
|-
|-
| 0x18
| 0x18
| 0x8
| 0x8
| Download Size
| DownloadSize
|-
|-
| 0x20
| 0x20
| 0x8
| 0x8
| Unused
| Reserved
|}
|}
=== Delta Header ===
== PatchDeltaHeader ==
This is "nn::ncm::PatchDeltaHeader".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
| 0x0
| 0x0
| 0x8
| 0x8
| Source Title ID
| SourcePatchId
|-
|-
| 0x8
| 0x8
| 8
| 8
| Destination Title ID
| DestinationPatchId
|-
|-
| 0x10
| 0x10
| 0x4
| 0x4
| Source Version
| SourceVersion
|-
|-
| 0x14
| 0x14
| 0x4
| 0x4
| Destination Version
| DestinationVersion
|-
|-
| 0x18
| 0x18
| 0x2
| 0x2
| Fragment Set Count
| FragmentSetCount
|-
|-
| 0x1A
| 0x1A
| 0x6
| 0x6
| Unused
| Reserved
|-
|-
| 0x20
| 0x20
| 0x2
| 0x2
| Content Info Count
| ContentInfoCount
|-
|-
| 0x22
| 0x22
| 0x6
| 0x6
| Unused
| Reserved
|}
|}
=== Fragment Set ===
== FragmentSet ==
This is "nn::ncm::FragmentSet".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
| 0x0
| 0x0
| 0x10
| 0x10
| Source Content ID
| SourceContentId
|-
|-
| 0x10
| 0x10
| 0x10
| 0x10
| Destination Content ID
| DestinationContentId
|-
|-
| 0x20
| 0x20
| 0x6
| 0x6
| Source Size
| SourceSize
|-
|-
| 0x26
| 0x26
| 0x6
| 0x6
| Destination Size
| DestinationSize
|-
|-
| 0x2C
| 0x2C
| 0x2
| 0x2
| Fragment Indicator Count
| FragmentIndicatorCount
|-
|-
| 0x2E
| 0x2E
| 0x1
| 0x1
| [[NCM_services#Title_Types|Title Types]]
| FragmentTargetContentType (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]])
|-
|-
| 0x2F
| 0x2F
| 0x1
| 0x1
| Update Type (0=ApplyAsDelta, 1=Overwrite, 2=Create)
| UpdateType (0=ApplyAsDelta, 1=Overwrite, 2=Create)
|-
|-
| 0x30
| 0x30
| 0x4
| 0x4
| Unused
| Reserved
|}
|}
=== Fragment Indicator ===
== FragmentIndicator ==
This is "nn::ncm::FragmentIndicator".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
| 0x0
| 0x0
| 0x2
| 0x2
| Content Info Index
| ContentInfoIndex
|-
|-
| 0x2
| 0x2
| 0x2
| 0x2
| Fragment Index
| FragmentIndex
|}
= DeltaMetaExtendedData =
This is "nn::ncm::DeltaMetaExtendedData".
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x8
| SourcePatchId
|-
| 0x8
| 0x8
| DestinationPatchId
|-
| 0x10
| 0x4
| SourceVersion
|-
| 0x14
| 0x4
| DestinationVersion
|-
| 0x18
| 0x2
| FragmentSetCount
|-
| 0x1A
| 0x6
| Reserved
|-
| 0x20
| 0x34 * FragmentSetCount
| [[#FragmentSet|FragmentSet]]
|-
| Variable
| 0x4 * FragmentIndicatorCount (from [[#FragmentSet|FragmentSet]])
| [[#FragmentIndicator|FragmentIndicator]]
|}
|}
= Digest =
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x20
| Digest
|}
This is a SHA-256 hash always found at the end of the file. The hash is calculated over the CNMT file's contents, but this is only done for the development version of the file which results in its production version counterpart sharing the same hash value.