Environment Variables Behavior On Haiku

[axeld]

I agree that BRoster::Launch() should work properly. If you look at /system/data/launch/system, you see that it doesn’t setup any environment.
It just starts the system servers, and ‘autologin’, which will then start a new session via BLaunchRoster::StartSession().

Then the interesting stuff happens: the user session is created, and /system/data/user_launch/user is evaluated. The “desktop” target will initialize the environment via SetupEnvironment.

Therefore, if you let a system server launch a user application, it misses any environment.

[X512]

@leavengood

According to X512 the input_server is not currently part of the user session but is launched by app_server.

My SystemManager utility can be used to see process hierarchy and what process launched by what process.

[X512]

@PulkoMandy

I don’t understand why you insist on going through Tracker here. Why Tracker?

Tracker is responsible for handling file open requests and selecting compatible applications depending on MIME type. It can also launch applications if opened item it an application.

[X512]

@PulkoMandy

Or maybe, rather than forwarding launch requests to Tracker, we should forward them to launch_daemon? That makes a bit more sense to me than Tracker, at least.

I think that it is a good idea to handle BRoster::Launch requests by launch_daemon.

[PulkoMandy]

@X512

Tracker is responsible for handling file open requests and selecting compatible applications depending on MIME type.

That’s how it is done now, sure. But it doesn’t mean it is the correct way to do things.

For example here in the open command line tool: open.cpp « bin « src - haiku - Haiku's main repository

In the case of opening files I would have expected the requests to go through registrar, rather than Tracker, for example? But it would create the same problem, I guess, because registrar is in the “system” session?

[X512]

@PulkoMandy

That’s how it is done now, sure. But it doesn’t mean it is the correct way to do things.

It become de-facto API and it is used by 3rd-party applications including my SystemManager (to open directories). It can’t be easily changes without breaking a lot of things.