This is the Switch equivalent of 3DS exheader. This is the file with extension ".npdm" in {Switch ExeFS}. The size of this file varies.
| Offset
|
Size
|
Description
|
| 0x0
|
0x80
|
META
|
| 0x80
|
0x200
|
RSA-2048 signature, followed a RSA-2048 modulus for NCA header (like 3DS)
|
| 0x280
|
<Varies>
|
ACID
|
| <See META>
|
<See META>
|
ACI0
|
META
| Offset
|
Size
|
Description
|
| 0x0
|
0x4
|
Magicnum "META".
|
| 0x20
|
?
|
Name string
|
| 0x70
|
0x4
|
Absolute offset for ACI0.
|
| 0x74
|
0x4
|
Size of ACI0.
|
| 0x78
|
0x4
|
Absolute offset of the RSA signature.
|
| 0x7C
|
0x4
|
Size used with the above offset. Offset+size is normally ACI0_start-8.
|
Switch version of 3DS "System Control Info"?
ACID
| Offset
|
Size
|
Description
|
| 0x0
|
0x4
|
Magicnum "ACID".
|
| 0x4
|
0x28
|
?
|
| 0x2C
|
0x4
|
Size of the Service Access Control.
|
| 0x30
|
0x14
|
?
|
| 0x44
|
?
|
FS Permissions
|
| 0xF0
|
<See above>
|
Service Access Control
|
Switch version of AccessDesc?
ACI0
| Offset
|
Size
|
Description
|
| 0x0
|
0x4
|
Magicnum "ACI0".
|
| 0x4
|
0x28
|
?
|
| 0x2C
|
0x4
|
Size of the Service Access Control.
|
| 0x30
|
0x14
|
?
|
| 0x44
|
?
|
FS Permissions
|
| 0x60
|
<See above>
|
Service Access Control
|
Switch version of 3DS ACI(Access Control Info)?
Service Access Control
This is a list of service-name strings which the title has access to, with the following structure:
+0: control_byte
+1: {service-name without nul-terminator}
Bitmask 0x0F in control_byte is the {length of the service-name without nul-terminator} - 1.
Bitmask 0x80 in control_byte means service is allowed to be registered.
The service string can contain a wildcard * character.
FS Permissions
| Bit
|
Description
|
| 0
|
MountContent* is accessible when set.
|
| 3
|
This is only bit set for ShopN in the permissions-u32.
|