env.h File Reference

Homebrew environment definitions and utilities. More...

#include "../types.h"
#include "../services/acc.h"

Go to the source code of this file.

Data Structures
struct	ConfigEntry
	Structure representing an entry in the homebrew environment configuration. More...

Typedefs
typedef void(*	LoaderReturnFn) (int result_code)
	Loader return function.

Enumerations
enum	{ EntryFlag_IsMandatory = (1U<<( 0 )) }
	Entry flags. More...
enum	{   EntryType_EndOfList =0 ,   EntryType_MainThreadHandle =1 ,   EntryType_NextLoadPath =2 ,   EntryType_OverrideHeap =3 ,   EntryType_OverrideService =4 ,   EntryType_Argv =5 ,   EntryType_SyscallAvailableHint =6 ,   EntryType_AppletType =7 ,   EntryType_AppletWorkaround =8 ,   EntryType_Reserved9 =9 ,   EntryType_ProcessHandle =10 ,   EntryType_LastLoadResult =11 ,   EntryType_RandomSeed =14 ,   EntryType_UserIdStorage =15 ,   EntryType_HosVersion =16 ,   EntryType_SyscallAvailableHint2 =17 }
enum	{ EnvAppletFlags_ApplicationOverride = (1U<<( 0 )) }

Functions
void	envSetup (void *ctx, Handle main_thread, LoaderReturnFn saved_lr)
	Parses the homebrew loader environment block (internally called). More...
const char *	envGetLoaderInfo (void)
	Returns information text about the loader, if present.
u64	envGetLoaderInfoSize (void)
	Returns the size of the loader information text.
Handle	envGetMainThreadHandle (void)
	Retrieves the handle to the main thread.
bool	envIsNso (void)
	Returns true if the application is running as NSO, otherwise NRO.
bool	envHasHeapOverride (void)
	Returns true if the environment has a heap override.
void *	envGetHeapOverrideAddr (void)
	Returns the address of the overriden heap.
u64	envGetHeapOverrideSize (void)
	Returns the size of the overriden heap.
bool	envHasArgv (void)
	Returns true if the environment has an argv array.
void *	envGetArgv (void)
	Returns the pointer to the argv array.
bool	envIsSyscallHinted (unsigned svc)
	Returns whether a syscall is hinted to be available. More...
Handle	envGetOwnProcessHandle (void)
	Returns the handle to the running homebrew process.
LoaderReturnFn	envGetExitFuncPtr (void)
	Returns the loader's return function, to be called on program exit.
void	envSetExitFuncPtr (LoaderReturnFn addr)
	Sets the return function to be called on program exit.
Result	envSetNextLoad (const char *path, const char *argv)
	Configures the next homebrew application to load. More...
bool	envHasNextLoad (void)
	Returns true if the environment supports envSetNextLoad.
Result	envGetLastLoadResult (void)
	Returns the Result from the last NRO.
bool	envHasRandomSeed (void)
	Returns true if the environment provides a random seed.
void	envGetRandomSeed (u64 out[2])
	Retrieves the random seed provided by the environment. More...
AccountUid *	envGetUserIdStorage (void)
	Returns a pointer to the user id storage area (if present).

Detailed Description

Homebrew environment definitions and utilities.

Author

plutoo

Copyright

libnx Authors

Enumeration Type Documentation

anonymous enum

anonymous enum

Entry flags.

Enumerator
EntryFlag_IsMandatory	Specifies that the entry must be processed by the homebrew application.

anonymous enum

anonymous enum

Enumerator
EntryType_EndOfList	Entry list terminator.
EntryType_MainThreadHandle	Provides the handle to the main thread.
EntryType_NextLoadPath	Provides a buffer containing information about the next homebrew application to load.
EntryType_OverrideHeap	Provides heap override information.
EntryType_OverrideService	Provides service override information.
EntryType_Argv	Provides argv.
EntryType_SyscallAvailableHint	Provides syscall availability hints (SVCs 0x00..0x7F).
EntryType_AppletType	Provides APT applet type.
EntryType_AppletWorkaround	Indicates that APT is broken and should not be used.
EntryType_Reserved9	Unused/reserved entry type, formerly used by StdioSockets.
EntryType_ProcessHandle	Provides the process handle.
EntryType_LastLoadResult	Provides the last load result.
EntryType_RandomSeed	Provides random data used to seed the pseudo-random number generator.
EntryType_UserIdStorage	Provides persistent storage for the preselected user id.
EntryType_HosVersion	Provides the currently running Horizon OS version.
EntryType_SyscallAvailableHint2	Provides syscall availability hints (SVCs 0x80..0xBF).

anonymous enum

anonymous enum

Enumerator
EnvAppletFlags_ApplicationOverride	Use AppletType_Application instead of AppletType_SystemApplication.

Function Documentation

envGetRandomSeed()

void envGetRandomSeed

(

u64

out[2]

)

Retrieves the random seed provided by the environment.

Parameters

out	Pointer to a u64[2] buffer which will contain the random seed on return.

envIsSyscallHinted()

bool envIsSyscallHinted

(

unsigned

svc

)

Returns whether a syscall is hinted to be available.

Parameters

svc	Syscall number to test.

Returns

true if the syscall is available.

envSetNextLoad()

Result envSetNextLoad	(	const char *	path,
		const char *	argv
	)

Configures the next homebrew application to load.

Parameters

path	Path to the next homebrew application to load (.nro).
argv	Argument string to pass.

envSetup()

void envSetup	(	void *	ctx,
		Handle	main_thread,
		LoaderReturnFn	saved_lr
	)

Parses the homebrew loader environment block (internally called).

Parameters

ctx	Reserved.
main_thread	Reserved.
saved_lr	Reserved.