Nintendo Switch Brew

Loader services: Difference between revisions

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= ldr:shel =
= ldr:shel =
This is "nn::ldr::detail::IShellInterface".
This is "nn::ldr::detail::IShellInterface".
This service has IPC max_sessions 3.


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== AddProcessToLaunchQueue ==
== SetProgramArgument ==
Takes a type-0x9 input buffer with launch arguments (as string), an u32 (size of arguments string), and an input title-id.
Takes a type-0x9 input buffer with launch arguments (as string), an u32 (size of arguments string), and an input [[NCM_services#ProgramId|ProgramId]]. No output.
 
[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.
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.
Loaded processes are kept in a queue waiting for PM to launch them. The maximum number of waiting processes in this list is 10.


== ClearLaunchQueue ==
== FlushArguments ==
No input/output.
 
Clears the loaded processes waiting queue.
Clears the loaded processes waiting queue.


= ldr:dmnt =
= ldr:dmnt =
This is "nn::ldr::detail::IDebugMonitorInterface".
This is "nn::ldr::detail::IDebugMonitorInterface".
This service has IPC max_sessions 2.


{| class="wikitable" border="1"
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! Cmd || Name
! Cmd || Name
|-
|-
| 0 || [[#SetProgramArgument]]
| 0 || [[#SetProgramArgument2]]
|-
|-
| 1 || [[#FlushArguments]]
| 1 || [[#FlushArguments2]]
|-
|-
| 2 || [[#GetProcessModuleInfo]]
| 2 || [[#GetProcessModuleInfo]]
|}
|}


== GetProcessModuleInfo==
== SetProgramArgument2 ==
Takes in a u64 Process ID, and a C descriptor out array of [[#ModuleInfos]]. Returns the number of ModuleInfos copied to output.
Same as [[#SetProgramArgument]].


ModuleInfo is the same here as for ro:dmnt.
== FlushArguments2 ==
Same as [[#FlushArguments]].


ModuleInfo has the following layout:
== GetProcessModuleInfo ==
Takes a type-0xA output buffer of [[#ModuleInfo]] and an input u64 ProcessId. Returns an output s32.
 
= ldr:pm =
This is "nn::ldr::detail::IProcessManagerInterface".
 
This service has IPC max_sessions 1.


=== ModuleInfo ===
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
! Offset
! Cmd || Name
! Size
|-
! Description
| 0 || [[#CreateProcess]]
|-
|-
| 0x0
| 1 || [[#GetProgramInfo]]
| 0x20
| Build ID
|-
|-
| 0x20
| 2 || [[#PinProgram]]
| 0x8
| Mapped Address
|-
|-
| 0x28
| 3 || [[#UnpinProgram]]
| 0x8
| Mapped Size
|-
|-
| 4 || [10.0.0+] [[#SetEnabledProgramVerification]]
|}
|}


== CreateProcess ==
Takes an input [[#PinId]], an input [[#CreateProcessFlag]] and an input ResourceLimit handle. Returns an output Process handle.
== GetProgramInfo ==
Takes a type-0x1A output buffer containing a [[#ProgramInfo]] and a [[NCM_services#ProgramLocation|ProgramLocation]]. No output.
[20.0.0+] Now takes an additional input u16.
== PinProgram ==
Takes a [[NCM_services#ProgramLocation|ProgramLocation]]. Returns an output [[#PinId]].
== UnpinProgram ==
Takes an input [[#PinId]]. No output.
== SetEnabledProgramVerification ==
Takes an input bool. No output.


= ldr:pm =
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|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.
This is "nn::ldr::detail::IProcessManagerInterface".


= CreateProcessFlag =
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
! Cmd || Name
! Value
!  Description
|-
|-
| 0 || CreateProcess
| 0 || EnableDebug
|-
|-
| 1 || [[#GetProgramInfo]]
| 1 || DisableAslr
|}
 
= PinId =
This is an u64.
 
= ModuleInfo =
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x20
| ModuleId
|-
|-
| 2 || [[#PinProgram]]
| 0x20
| 0x8
| Address
|-
|-
| 3 || [[#UnpinProgram]]
| 0x28
| 0x8
| Size
|}
|}


== GetProgramInfo ==
= ProgramInfo =
Takes an ncm::ProgramLocation, parses the NPDM, and writes a [[#ProgramInfo]] to a C descriptor buffer as follows:
 
=== ProgramInfo ===
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
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| 0x0
| 0x0
| 0x1
| 0x1
| MainThreadPrio. Arg1 to svcStartProcess
| MainThreadPriority
|-
|-
| 0x1
| 0x1
| 0x1
| 0x1
| DefaultCpuId. Arg2 to svcStartProcess
| DefaultCpuId
|-
|-
| 0x2
| 0x2
| 0x1
| 0x2
| ApplicationType, see [[Process Manager services|here]].
| Flags
|-
| 0x3
| 0x1
| Padding
|-
|-
| 0x4
| 0x4
| 0x4
| 0x4
| MainThreadStackSize. Arg3 to svcStartProcess
| MainThreadStackSize
|-
|-
| 0x8
| 0x8
| 0x8
| 0x8
| TitleIdRange_Min
| [[NCM_services#ProgramId|ProgramId]]
|-
|-
| 0x10
| 0x10
| 0x4
| 0x4
| ACID [[NPDM#Service Access Control|Service Access Control]] list size
| AcidSacSize
|-
|-
| 0x14
| 0x14
| 0x4
| 0x4
| ACI0 [[NPDM#Service Access Control|Service Access Control]] list size
| AciSacSize
|-
|-
| 0x18
| 0x18
| 0x4
| 0x4
| ACID [[NPDM#FS Access Control|FS Access Control]] buffer size
| AcidFacSize
|-
|-
| 0x1C
| 0x1C
| 0x4
| 0x4
| ACI0 [[NPDM#FS Access Control|FS Access Control]] buffer size
| AciFacSize
|-
|-
| 0x20
| 0x20
| <Varies>
| 0x10
| ACID [[NPDM#Service Access Control|Service Access Control]] list
| [19.0.0+] Reserved
|-
| [19.0.0+] 0x30 ([1.0.0-18.1.0] 0x20)
| Variable
| AcidSac
|-
|-
| <Varies>
| Variable
| <Varies>
| Variable
| ACI0 [[NPDM#Service Access Control|Service Access Control]] list
| AciSac
|-
|-
| <Varies>
| Variable
| <Varies>
| Variable
| ACID [[NPDM#FS Access Control|FS Access Control]] buffer
| AcidFac
|-
|-
| <Varies>
| Variable
| <Varies>
| Variable
| ACI0 [[NPDM#FS Access Control|FS Access Control]]
| AciFac
|}
|}
== PinProgram ==
Takes an ncm::ProgramLocation, returns a u64 "PinId".
== UnpinProgram ==
Takes a PinId from [[#PinProgram]].


[[Category:Services]]
[[Category:Services]]
Retrieved from "https://switchbrew.org/wiki/Loader_services"