Loader services

ldr:shel

This is "nn::ldr::detail::IShellInterface".

This service has IPC max_sessions 3.

Cmd	Name
0	#SetProgramArgument
1	#FlushArguments

SetProgramArgument

Takes a type-0x9 input buffer with launch arguments (as string), an u32 (size of arguments string), and an input title-id.

[11.0.0+] Now takes a type-0x5 buffer instead of type-0x9. Now takes a total of 8-bytes of input, instead of 0x10-bytes total.

Loads a process for the specified title-id and passes along the supplied arguments. Loaded processes are kept in a queue waiting for PM to launch them. The maximum number of waiting processes in this list is 10.

FlushArguments

Clears the loaded processes waiting queue.

ldr:dmnt

This is "nn::ldr::detail::IDebugMonitorInterface".

This service has IPC max_sessions 2.

Cmd	Name
0	#SetProgramArgument
1	#FlushArguments
2	#GetProcessModuleInfo

GetProcessModuleInfo

Takes in a u64 Process ID, and a C descriptor out array of #ModuleInfos. Returns the number of ModuleInfos copied to output.

ldr:pm

This is "nn::ldr::detail::IProcessManagerInterface".

This service has IPC max_sessions 1.

Cmd	Name
0	CreateProcess
1	#GetProgramInfo
2	#PinProgram
3	#UnpinProgram
4	[10.0.0+] #SetEnabledProgramVerification

GetProgramInfo

Takes an ncm::ProgramLocation, parses the NPDM, and writes a #ProgramInfo to a C descriptor buffer.

PinProgram

Takes an ncm::ProgramLocation, returns a u64 "PinId".

UnpinProgram

Takes a PinId from #PinProgram.

SetEnabledProgramVerification

Seems to sets a global flag to inputval & 1.

When the flag is zero, it will set ret=0 instead of ret={error} when verifying the fixed-key NPDM ACID signature fails. This also skips verifying the NCA Header signature using the ACID key. Note that if verifying the fixed-key ACID signature is successful, and verifying the ACID-key NCA header signature fails, it will throw an error and abort.

ModuleInfo

Offset	Size	Description
0x0	0x20	ModuleId
0x20	0x8	ImageAddress
0x28	0x8	ImageSize

ProgramInfo

Offset	Size	Description
0x0	0x1	MainThreadPrio. Arg1 to svcStartProcess
0x1	0x1	DefaultCpuId. Arg2 to svcStartProcess
0x2	0x1	ApplicationType, see here.
0x3	0x1	Padding
0x4	0x4	MainThreadStackSize. Arg3 to svcStartProcess
0x8	0x8	TitleIdRange_Min
0x10	0x4	ACID Service Access Control list size
0x14	0x4	ACI0 Service Access Control list size
0x18	0x4	ACID FS Access Control buffer size
0x1C	0x4	ACI0 FS Access Control buffer size
0x20	<Varies>	ACID Service Access Control list
<Varies>	<Varies>	ACI0 Service Access Control list
<Varies>	<Varies>	ACID FS Access Control buffer
<Varies>	<Varies>	ACI0 FS Access Control