Services API: Difference between revisions

No edit summary
No edit summary
Line 1: Line 1:
Just like the 3DS/N3DS, the Switch exposes an API which communicates with certain services. Services are system processes running in the background which wait for incoming requests. When a process wants to communicate with a service, it first needs to get a handle to the named service, and then it can communicate with the service via inter-process communication (each service has a name up to 8 characters).
Services are system processes running in the background which wait for incoming requests. When a process wants to communicate with a service, it first needs to get a handle to the named service, and then it can communicate with the service via inter-process communication (each service has a name up to 8 characters).


Handles for services are retrieved from the service manager port, "sm:". Services are an abstraction of ports, they operate the same way except regular ports can have their handles retrieved directly from a SVC.
Handles for services are retrieved from the service manager port, "sm:". Services are an abstraction of ports, they operate the same way except regular ports can have their handles retrieved directly from a SVC.


List of services (non-exhaustive):
= sm: =
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || [[#Initialize]]
|-
| 1 || [[#GetService]]
|-
| 2 || [[#RegisterService]]
|-
| 3 ||
|}
 
== Initialize ==
{| class="wikitable" border="1"
|-
! Word || Value
|-
| 0 || 0x00000004
|-
| 1 || 0x8000000A
|-
| 2 || 0x00000001
|- style="border-top: double"
| 0-1 || Pid
|- style="border-top: double"
| 0 || "SCFI"
|-
| 1 || 0x00000000
|-
| 2 || Always 0.
|}
 
== GetService ==
{| class="wikitable" border="1"
|-
! Word || Value
|-
| 0 || 0x00000004
|-
| 1 || 0x0000000A
|- style="border-top: double"
| 0 || "SCFI"
|-
| 1 || 0x00000001
|-
| 2 || Service name, zero padded and casted to u64.
|}
 
== RegisterService ==
{| class="wikitable" border="1"
|-
! Word || Value
|-
| 0 || 0x00000004
|-
| 1 || 0x0000000C
|- style="border-top: double"
| 0 || "SCFI"
|-
| 1 || 0x00000002
|-
| 2 || Service name, zero padded and casted to u64.
|-
| 3 || Max sessions? 32-bit integer.
|-
| 4 || Unknown bool
|}
 
= List =
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-